CN107429701B - The inhalation mask that horizontal axis immersible pump and horizontal axis immersible pump use - Google Patents
The inhalation mask that horizontal axis immersible pump and horizontal axis immersible pump use Download PDFInfo
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- CN107429701B CN107429701B CN201680021343.3A CN201680021343A CN107429701B CN 107429701 B CN107429701 B CN 107429701B CN 201680021343 A CN201680021343 A CN 201680021343A CN 107429701 B CN107429701 B CN 107429701B
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- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 323
- 239000002351 wastewater Substances 0.000 description 66
- 238000007599 discharging Methods 0.000 description 52
- 230000000694 effects Effects 0.000 description 12
- 238000005086 pumping Methods 0.000 description 11
- 230000002829 reductive effect Effects 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 230000004941 influx Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000029777 axis specification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/16—Pumping installations or systems with storage reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
Horizontal axis immersible pump includes shell, with suction inlet and outlet；Impeller is supported in shell；Inhalation mask is connected to suction inlet；First suction opening is set to inhalation mask, and is opened on the position lower than the upper end of impeller；And second suction opening, at least one party in inhalation mask and shell is set on the upstream side than impeller, and is opened on the position higher than the upper end of the first suction opening.
Description
Technical field
This disclosure relates to as the internal water remover apparatus to draw water for waiting in closed conduit and being used for rainwater, being lauched etc. is set to
The inhalation mask that horizontal axis immersible pump and horizontal axis immersible pump use.
Background technique
Currently, increasing the construction of pumping plant, pumping unit is modified to mounting and detaching structure by pumping plant, using the horizontal axis of low water level type
Draining pump of the immersible pump (immersible pump of horizontal axis axial flow type) as rainwater etc..
In addition, shutter door is set in tributary side in the place that such as mainstream and tributary are converged, when the water such as heavy rain increase,
Shutter door is closed, to prevent the water adverse current of mainstream side to tributary.At this point, in order to be carried out to the past water of upstream flow from tributary
Forced drainage uses more and is equipped with the pump door of horizontal axis immersible pump in shutter door.Moreover, being pumped to carry out the draining of large capacity
Door uses horizontal axis immersible pump more.Patent document 1, which is disclosed, is arranged suction cone (inhalation mask) in horizontal axis immersible pump, so as to
It drains to the pump door of low water level.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2003-003450 bulletin
Summary of the invention
Problems to be solved by the invention
Impeller of the horizontal axis immersible pump disclosed in patent document 1 when becoming like full dose draining operating submerges in water completely
In the state of operating when water level below when, become idle running, it is interim to stop, then influx increase and water level rise when,
Restarting.When the ON/OFF of pump is continually repeated according to water level in this wise, running management becomes complicated, initiation culture
Become frequently, to become larger to the burden of fittings motor.
Therefore, the object of the present invention is to provide a kind of horizontal axis immersible pumps, even if the water level in suction side is full dose draining
Water level when operating is hereinafter, being also able to maintain that the operating of rated speed, inhibiting to pump stopping repeatedly and starting.
Solution for solving the problem
The horizontal axis immersible pump of a scheme of the invention includes shell, with suction inlet and outlet；Impeller, quilt
It is supported in shell；Inhalation mask is connected to suction inlet；First suction opening is set to inhalation mask, and is opened on than impeller
The low position in upper end；And second suction opening, at least one party in inhalation mask and shell are set on the upstream side than impeller,
And it is opened on the position higher than the upper end of the first suction opening.
Even if not submerged in the operation mode in water completely in impeller as a result, horizontal axis immersible pump also absorbs air on one side, one
Side operating, therefore suction side can be inhibited in the state of maintaining the operating of the rated speed of fittings motor of driving impeller
Water level reduction speed or the rate of climb.Therefore, it can reduce the repetition rate of the ON/OFF of fittings motor.
Upper wall is included alternatively, it is also possible to inhalation mask；And the side wall extended downward from upper wall, the leading edge of upper wall
With the position higher than the up-front both ends, the second suction opening is by the straight line packet at leading edge and the connection up-front both ends
The opening enclosed.
Inhalation mask inhibits the generation of the air suction vortex from the water surface as a result, so as to inhibit vibration, noise.Separately
Outside, for example, the water level when suction side reduces, the water level of the operation mode drained from full dose becomes the operational mode that mixing wastewater with air drains
When the water level of formula, the air-breathing area of the second suction opening expands, therefore can suitably increase the soakage of air, in each operating
It is smoothly converted between mode.
Upper wall is included alternatively, it is also possible to inhalation mask；The side wall extended downward from upper wall；And it is downward from upper wall
Just extended antetheca, the second suction opening are the holes for penetrating through antetheca.
Inhalation mask inhibits the generation of the air suction vortex from the water surface as a result, so as to inhibit vibration, noise.Separately
Outside, for example, the water level when suction side reduces, the water level of the operation mode drained from full dose becomes the operational mode that mixing wastewater with air drains
When the water level of formula, the air-breathing area of the second suction opening expands, therefore can suitably increase the soakage of air, in each operating
It is smoothly converted between mode.Moreover, inhalation mask can be such that the fluid (water or air) for flowing through to come from upstream side flows into inhalation mask,
On the other hand, the foreign matter that fluid contains is able to suppress to flow into inhalation mask.
Upper wall is included alternatively, it is also possible to inhalation mask；The side wall extended downward from upper wall；And it is downward from upper wall
Just extended antetheca, the first suction opening are the openings surrounded by the lower end of antetheca and the lower end of side wall, and the second sucking is opened
Mouth is the straight of the lower end for being connected to and being formed in the notch of at least more than one of antetheca with the first suction opening and link antetheca
The opening that line surrounds.
Inhalation mask inhibits the generation of the air suction vortex from the water surface as a result, so as to inhibit vibration, noise.Separately
Outside, for example, the water level when suction side reduces, the water level of the operation mode drained from full dose becomes the operational mode that mixing wastewater with air drains
When the water level of formula, the air-breathing area of the second suction opening expands, therefore can suitably increase the soakage of air, in each operating
It is smoothly converted between mode.Moreover, inhalation mask can be such that the fluid (water or air) for flowing through to come from upstream side flows into inhalation mask,
On the other hand, the foreign matter that fluid contains is able to suppress to flow into inhalation mask.
Upper wall is included alternatively, it is also possible to inhalation mask；And the side wall extended downward from upper wall, the first sucking are opened
It mouthful is the opening surrounded by the lower end of the leading edge of upper wall and side wall, the second suction opening is to be connected to the first suction opening and shape
It at the opening surrounded in the notch of at least more than one of upper wall and the up-front straight line of connection upper wall or is inhaled with first
Enter open communication and is formed in the opening of the straight line encirclement of the notch of at least more than one of side wall and the lower end of connection side wall.
Inhalation mask inhibits the generation of the air suction vortex from the water surface as a result, so as to inhibit vibration, noise.Separately
Outside, for example, the water level when suction side reduces, the water level of the operation mode drained from full dose becomes the operational mode that mixing wastewater with air drains
When the water level of formula, the air-breathing area of the second suction opening expands, therefore can suitably increase the soakage of air, in each operating
It is smoothly converted between mode.Moreover, inhalation mask can be such that the fluid (water or air) for flowing through to come from upstream side flows into inhalation mask,
On the other hand, the foreign matter that fluid contains is able to suppress to flow into inhalation mask.
Upper wall is included alternatively, it is also possible to inhalation mask；And the side wall extended downward from upper wall, the second sucking are opened
Mouth is formed at the opening of upper wall or side wall.
Inhalation mask inhibits the generation of the air suction vortex from the water surface as a result, so as to inhibit vibration, noise.Separately
Outside, for example, the water level when suction side reduces, the water level of the operation mode drained from full dose becomes the operational mode that mixing wastewater with air drains
When the water level of formula, the air-breathing area of the second suction opening expands, therefore can suitably increase the soakage of air, in each operating
It is smoothly converted between mode.
In addition, horizontal axis immersible pump, which can also have one end, is connected to the open air entry of inhalation mask or shell and the other end i.e.
Air intake duct, inhalation mask include upper wall；And the side wall extended downward from upper wall, the second suction opening are air entries.
Even if air also can be made suitably in the water level operation mode below of the operation mode of full dose draining as a result,
It flows into inhalation mask.
The antetheca that leading edge alternatively, it is also possible to the upper wall of inhalation mask or the upper wall from inhalation mask extend downward
Lower end, positioned at the top position from the lower end of impeller according to the diameter of impeller than 10~25%.
Thereby, it is possible to carry out the operating of the operation mode of full dose draining, until particularly, being drained in full dose when low water level
Operation mode in, can suitably inhibit the generation of air suction vortex.
In addition, horizontal axis immersible pump can also have baffle door, which is set to the side of the outlet of shell, and can
It is opened and closed using the pressure for the fluid being discharged from the outlet.
As a result, in each operation mode of full dose draining and mixing wastewater with air draining, baffle door opens always, discharge and each fortune
The corresponding water of rotary-die type in the operation mode of the idle running in this water level below, blocks baffle door, therefore fluid is in shell
It is easy to circulate.In addition, baffle door is opened and closed using discharge pressure, there is no need to the driving for being opened and closed baffle door is in addition arranged
Device, control device can simplify structure.
In addition, horizontal axis immersible pump can also have air-release mechanism, when the internal pressure of shell has reached defined pressure, this is put
The intracorporal air of shell is emitted into outside by mechanism of qi structure.
As a result, for example, the operation mode in operation mode or mixing wastewater with air draining from idle running is turned by water level rising
When changing to other operation modes, it can suitably be discharged and be stranded in the intracorporal air of shell and be therefore able to suppress to fittings motor
The load of application.
In addition, one scheme of the present invention is that a kind of inhalation mask that horizontal axis immersible pump uses, comprising: outlet opening；Upper wall；
Side wall is extended downward from upper wall；Antetheca is extended downward from upper wall；First suction opening, by antetheca
Lower end and side wall lower end surround；And second suction opening, it is to be connected to the first suction opening and be formed in antetheca
The notch of at least more than one and connection antetheca lower end straight line surround opening.
Inhalation mask inhibits the generation of the air suction vortex from the water surface as a result, so as to inhibit vibration, noise.Separately
Outside, for example, the water level when suction side reduces, the water level of the operation mode drained from full dose becomes the operational mode that mixing wastewater with air drains
When the water level of formula, the air-breathing area of the second suction opening expands, therefore can suitably increase the soakage of air, in each operating
It is smoothly converted between mode.Moreover, inhalation mask can be such that the fluid (water or air) for flowing through to come from upstream side flows into inhalation mask,
On the other hand, the foreign matter that fluid contains is able to suppress to flow into inhalation mask.
Further, other schemes of the invention are a kind of inhalation masks that horizontal axis immersible pump uses, comprising: outlet opening；
Upper wall；Side wall is extended downward from upper wall；First suction opening is surrounded by the lower end of the leading edge of upper wall and side wall；
And second suction opening, it is the notch of at least more than one and the company for being connected to and being formed in upper wall with the first suction opening
Tie wall up-front straight line surround opening or be to be connected to the first suction opening and be formed at least one of side wall
The opening that the straight line of the lower end of above notch and connection side wall surrounds.
Inhalation mask inhibits the generation of the air suction vortex from the water surface as a result, so as to inhibit vibration, noise.Separately
Outside, for example, the water level when suction side reduces, the water level of the operation mode drained from full dose becomes the operational mode that mixing wastewater with air drains
When the water level of formula, the air-breathing area of the second suction opening expands, therefore can suitably increase the soakage of air, in each operating
It is smoothly converted between mode.Moreover, inhalation mask can be such that the fluid (water or air) for flowing through to come from upstream side flows into inhalation mask,
On the other hand, the foreign matter that fluid contains is able to suppress to flow into inhalation mask.
The effect of invention
In accordance with the invention it is possible to a kind of horizontal axis immersible pump be provided, even if the water level in suction side is full dose draining operating
Water level hereinafter, be also able to maintain that the operating of rated speed, inhibit pump to stop and start repeatedly.
Detailed description of the invention
Fig. 1 is the figure for indicating the structure of horizontal axis immersible pump of embodiments of the present invention.
Fig. 2 is the figure for indicating the shape of inhalation mask of first embodiment.
Fig. 3 is the other shapes of figure for indicating the inhalation mask of first embodiment.
Fig. 4 is the other shapes of figure for indicating the inhalation mask of first embodiment.
Fig. 5 is the figure for indicating to have used the structure of pump door system of horizontal axis immersible pump.
Fig. 6 is the figure for illustrating the operation mode of horizontal axis immersible pump of first embodiment.
Fig. 7 is the figure of pump movement when indicating the full dose discharging mode under first embodiment.
Fig. 8 is the figure of pump movement when indicating the mixing wastewater with air discharge mode under first embodiment.
Fig. 9 is the figure of pump movement when indicating the idle mode under first embodiment.
Figure 10 is the figure for indicating to be set to the structure of the air-release mechanism of horizontal axis immersible pump.
Figure 11 is the figure for indicating the shape of inhalation mask of second embodiment.
Figure 12 is the figure for indicating the shape of suction unit of second embodiment.
Figure 13 is the other shapes of figure for indicating the suction unit of second embodiment.
Figure 14 A is the other shapes of figure for indicating the suction unit of second embodiment.
Figure 14 B is the other shapes of figure for indicating the suction unit of second embodiment.
Figure 15 is the other shapes of figure for indicating the suction unit of second embodiment.
Figure 16 is the figure for illustrating the operation mode of horizontal axis immersible pump of second embodiment.
Figure 17 is the figure of pump movement when indicating the full dose discharging mode under second embodiment.
Figure 18 is the figure of pump movement when indicating the mixing wastewater with air discharge mode under second embodiment.
Figure 19 is the figure of pump movement when indicating the idle mode under second embodiment.
Figure 20 is the figure for indicating the shape of horizontal axis immersible pump of third embodiment.
Figure 21 is the figure for indicating other shapes of horizontal axis immersible pump of third embodiment.
Figure 22 is the figure for illustrating the operation mode of horizontal axis immersible pump of third embodiment.
Figure 23 is the figure of pump movement when indicating the full dose discharging mode under third embodiment.
Figure 24 is the figure of pump movement when indicating the mixing wastewater with air discharge mode under third embodiment.
Figure 25 is the figure of pump movement when indicating the idle mode under third embodiment.
Figure 26 is the figure for indicating the shape of horizontal axis immersible pump of the 4th embodiment.
Figure 27 is the figure for indicating other shapes of horizontal axis immersible pump of the 4th embodiment.
Figure 28 is the figure for indicating other shapes of horizontal axis immersible pump of the 4th embodiment.
Figure 29 is the figure for illustrating the operation mode of horizontal axis immersible pump of the 4th embodiment.
Figure 30 is the figure of pump movement when indicating the full dose discharging mode under the 4th embodiment.
Figure 31 is the figure of pump movement when indicating the mixing wastewater with air discharge mode under the 4th embodiment.
Figure 32 is the figure of pump movement when indicating the idle mode under the 4th embodiment.
Figure 33 is the figure for indicating the shape of horizontal axis immersible pump of the 5th embodiment.
Figure 34 A is the figure for indicating the structure of air conditioning mechanism of the 5th embodiment.
Figure 34 B is the figure for indicating the other structures of air conditioning mechanism of the 5th embodiment.
Figure 35 is the figure for illustrating the operation mode of horizontal axis immersible pump of the 5th embodiment.
Figure 36 is the figure of pump movement when indicating the full dose discharging mode under the 5th embodiment.
Figure 37 is the figure of pump movement when indicating the mixing wastewater with air discharge mode under the 5th embodiment.
Figure 38 is the figure of pump movement when indicating the idle mode under the 5th embodiment.
Figure 39 is the figure for indicating the structure of horizontal axis immersible pump of sixth embodiment.
Figure 40 A is the major part main view of impeller.
Figure 40 B is the expanded view of the impeller of the up-front height and position of inhalation mask.
Figure 41 is the figure for indicating the shape of inhalation mask of sixth embodiment.
Figure 42 is the chart for indicating the performance curve of horizontal axis immersible pump.
Figure 43 is the figure for illustrating the operation mode of horizontal axis immersible pump of sixth embodiment.
Figure 44 is the figure of pump movement when indicating the full dose discharging mode under sixth embodiment.
Figure 45 is the figure of pump movement when indicating the idle mode under sixth embodiment.
Figure 46 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 47 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 48 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 49 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 50 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 51 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 52 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 53 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 54 is the figure for indicating the shape of the inhalation mask as other embodiment.
Figure 55 is the figure for indicating the shape of the inhalation mask as other embodiment.
Specific embodiment
(first embodiment)
Fig. 1 is the sectional view for indicating the structure of horizontal axis immersible pump 1 of first embodiment of the invention.Horizontal axis immersible pump
1 is the immersible pump of the horizontal axis axial flow type for the draining for being able to carry out large capacity, have shell 2, impeller 3, main shaft 4, guide blades 5,
And fittings motor 6.
Shell 2 is the cylinder with suction inlet and outlet, passes through fluid (water and air) inside it.In shell 2
Inside, since suction side, configuration impeller 3, guide blades 5 and fittings motor 6.Impeller 3 is selected according to the specification of pumping plant
It selects, for example, being axial blade or oblique flow blade.The rotary force generated by fittings motor 6 is transferred to impeller 3 by main shaft 4, and
One end is connected to lower motor 6, and the other end is connected to impeller 3.That is, using the fittings motor 6 for being held in shell 2, via master
Axis 4 supports impeller 3.Guide blades 5 are limited to the flow direction of the fluid to circulate in shell 2.
Moreover, can have can be to the baffle door 9 that the discharge side of shell 2 openly and closely supports for horizontal axis immersible pump 1.In addition,
Baffle door 9 can directly or indirectly be set to the outlet of shell 2.For example, shell 2 and baffle door 9 can be via as horizontal axis
The sluice wall of the mounted object of immersible pump 1 and interconnect.Here, an example as sluice wall, can enumerate after being similar to
The door leaf body for the pump door system stated.Baffle door 9 is closed when the discharge pressure of horizontal axis immersible pump 1 is low using self weight, is being discharged
It when pressure is high, is opened using the fulcrum on top as axis, thus allows for draining.In addition, depending on the application, it also can be in shell 2
Discharge side connection discharge piping to drain.
In addition, horizontal axis immersible pump 1 has the inhalation mask 7 by opening portion 8 downward in the suction side of shell 2.Inhalation mask 7
It is such as moulding system, the fluid sucked from opening portion 8 is guided to the suction inlet of shell 2.
Fig. 2 is three direction views for indicating the shape of inhalation mask 7 of present embodiment.Inhalation mask 7 includes upper wall 10；From upper
The two side walls 11 that the both ends of wall 10 are just extended separately down；And it is connected to shell 2, and the flange with outlet opening
12.Upper wall 10 tilts downwards towards suction side (left direction of side view).The lower end of side wall 11 is respectively from the leading edge of upper wall 10
13 both ends tilt to 2 close beneath of shell of horizontal axis immersible pump 1.
The opening portion 8 of inhalation mask 7 is set as inclined state in the suction side mode higher than the other side, is present embodiment
The first suction opening.The leading edge 13 of upper wall 10 forms the center portion protrusion higher than both ends.Moreover, the air-breathing of inhalation mask 7
Portion 14 is to link the space surrounded by the leading edge 13 of the straight line (two chain-dotted lines) at the both ends of leading edge 13 and convex, is this embodiment party
Second suction opening of formula.In addition, leading edge 13 is not limited to a straight line, the center portion of leading edge 13 can also be prominent to suction side.
In addition, the beginning 14a positioned at the highest position of suction unit 14 and the terminal 14b positioned at minimum position are according to pumping plant, horizontal axis
The specification of immersible pump 1 is set in the position that can be operated under aftermentioned mixing wastewater with air discharge mode.
Fig. 3 is other shapes of two direction view for indicating the inhalation mask 7 of present embodiment.In the present embodiment, it sucks
The shape of cover 7 is not limited to shape shown in Fig. 2, is also possible to shape shown in Fig. 3.Inhalation mask 7 shown in Fig. 3 has from upper
The antetheca 15 that the leading edge 13 of wall 10 extends downward.In this case, before the second suction opening of present embodiment is perforation
Multiple suction holes 16 of wall 15.The lower end (end) of side wall 11 has defined inclination angle from the lower end of antetheca 15 towards flange 12
Degree.The extended length of antetheca 15 is suitably set according to aftermentioned mixing wastewater with air discharge mode, the operational situation of idle mode.
In addition, the shape of suction hole 16 is that can suitably select such as round shape, long hole shape, slit-shaped.It is the aperture of suction hole 16, narrow
The width of seam is also suitably determined according to operating condition.
Fig. 4 is other shapes of two direction view for indicating the inhalation mask 7 of present embodiment.Inhalation mask 7 shown in Fig. 4 will be upper
The leading edge 13 of wall 10 is made into level, and has the antetheca 15 being extended downward from leading edge 13.Antetheca 15 has and opening
The notch of at least more than one that portion 8 is connected to, if these notch are regarded as entirety, shape is zigzag or corrugated.It should
In the case of, the second suction opening of present embodiment is the straight line (two chain-dotted lines) of the lower end as incision and connection antetheca 15
The suction unit 14 of the opening of encirclement.Shape, the extended length of antetheca 15 for side wall 11, with inhalation mask 7 shown in Fig. 3
It is identical.
Fig. 5 is the synoptic diagram for indicating to have used the structure of pump door system 17 of horizontal axis immersible pump 1.Pump door system 17 has:
Pump door 19；It hangs down from roof 20, and slings the rack bar 21 of door leaf body 18；And by making rack bar 21 make to pump and moving up and down
The opening/closing machine 22 of 19 lifting of door.
It pumps door 19 and is detachably packed into horizontal axis immersible pump 1 in door leaf body 18, the water routes such as rivers and creeks are opened and closed, from upstream
Side (figure left) downstream (figure right) drains.Specifically, usually, in the state of increase door leaf body 18, pump is inhaled
Enter the water natural drainage in the water route of side (upstream side) to the water route for pumping discharge side (downstream side).On the other hand, due tos heavy rain etc.
When the outer water level in downstream side rises, using the driving of opening/closing machine 22, decline door leaf body 18, interdict water route, horizontal axis immersible pump 1 will
The water of upstream side is forcibly expelled to downstream side.In addition, the pump door system 17 of present embodiment makes pump door 19, vertically decline comes
Water route is interdicted, also can use the well-known techniques such as swing or rotation blocking water route.
Next, being illustrated to the operation mode for the horizontal axis immersible pump 1 that pump door system 17 uses.Fig. 6 is to illustrate horizontal axis
The figure of the operation mode of immersible pump 1.In addition, inhalation mask 7 is shaped to shape shown in Fig. 3 and is illustrated in Fig. 6,
But Fig. 2 or inhalation mask shown in Fig. 47 are also the same.
Horizontal axis immersible pump 1 has three kinds of operatings on the basis of two water levels H, M (H > M) of preset suction side
Mode.Specifically, being full dose discharging mode M1, mixing wastewater with air discharge mode M2 and idle mode M3.Water in suction side
When position is more than water level H, implement full dose discharging mode M1.It is real when water level in suction side is water level H or less and is more than water level M
Apply mixing wastewater with air discharge mode M2.When water level in suction side is water level M or less, implement idle mode M3.Though in addition, not scheming
Show, but the water level of suction side be specific water level L (L < M) below when, horizontal axis immersible pump 1 shuts down.
In the case where inhalation mask 7 is shape shown in Fig. 3, water level H is set as the upper end of the suction hole 16 of inhalation mask 7
The position of 16a.Water level M is set as the upper end of the opening portion 8 of inhalation mask 7.In addition, water level L is set as, even if impeller 3 rotates,
No normal direction fittings motor 6 supplies the upper limit of the water level of sufficient water.In addition, the case where inhalation mask 7 is shape shown in Fig. 2
Under, water level H is set as the position of the beginning 14a of the suction unit 14 of inhalation mask 7, and water level M is set as the terminal 14b's of suction unit 14
Position.
< full dose discharging mode >
Fig. 7 is the horizontal axis immersible pump 1 illustrated when operation mode is full dose discharging mode M1 (suction side water level > water level H)
The figure of movement.Full dose discharging mode M1 is the operation mode for making the water full dose sucked in upstream side be expelled to downstream side.When because big
When rain etc. and the water level of passage downstream side (discharge side) rise, in order to inhibit adverse current, door leaf body 18 is fallen, interdicts water route.Then, when
When the water level of door upstream side (suction side) is more than water level H, start horizontal axis immersible pump 1, horizontal axis immersible pump 1 is with full dose discharging mode M1
It is operated with rated speed, is downstream drained.At this point, the opening (suction hole 16 and the opening that are connected to the inside of horizontal axis immersible pump 1
Portion 8) it submerges in water completely, the baffle door 9 of discharge side becomes open state using the discharge pressure of horizontal axis immersible pump 1.Here,
It can be detected in control device (not shown) using well known water-level gauge etc. at the time of the operation start of horizontal axis immersible pump 1 and be more than
After water level H, then judged, in fact, can not also detecting water level H, and based at the beginning of presetting etc., automatically
Judged.
< mixing wastewater with air discharge mode >
Fig. 8 is the cross illustrated when operation mode is mixing wastewater with air discharge mode M2 (water level H >=suction side water level > water level M)
The figure of the movement of axis immersible pump 1.When with full dose discharging mode M1, upstream side stores what water was drained to horizontal axis immersible pump 1 on the door
As a result, the water level of i.e. door upstream side is gradually reduced, become water level H with when, operation mode is converted into mixing wastewater with air discharge mode M2.
Mixing wastewater with air discharge mode M2 is to absorb a small amount of air, and the fortune drained with the operating of rated speed with water suction
Rotary-die type.
Specific water level is some or all atmosphere openings of the suction hole 16 of inhalation mask 7, and opening portion 8 is that do not have
Enter the water level in water.By the way that the upper end 16a of the suction hole 16 of inhalation mask 7 is set as water level H, so as to one side from opening portion
8 sucking water, suck air from suction hole 16 on one side.Displacement is determined by the relationship of water level and inspiratory capacity.By the way that the air water is arranged
Discharge mode M2 is mixed, the bumpy running of low water level can be alleviated.
In addition, at mixing wastewater with air discharge mode M2, when discharge pressure ratio full dose discharging mode M1 of horizontal axis immersible pump 1, drops
It is low.But baffle door 9 keeps opening.
< idle mode >
Fig. 9 is the horizontal axis immersible pump illustrated when operation mode is idle mode M3 (water level M >=suction side water level > water level L)
The figure of 1 movement.Horizontal axis immersible pump 1 persistently drains, so that water level further decreases, when becoming water level M or less, operation mode
Idle mode M3 is converted into from mixing wastewater with air discharge mode M2.Idle mode M3 is the mode of so-called standby operating, be with
Water suction, absorbs a large amount of air, and maintain the operation mode of the operating of rated speed.
It is as specific water level, although a part of atmosphere opening of the opening portion 8 of inhalation mask 7, one of impeller 3
Divide the water level submerged in water.By the way that the upper end of the opening portion 8 of inhalation mask 7 is set as water level M, so as to become water in water level
When the M or less of position, a large amount of air is sucked to suction hole 16 and opening portion 8 from inhalation mask 7.As a result, the discharge of horizontal axis immersible pump 1
Pressure reduction, but remained in operation with the state that water and air mixes in shell 2.Water in shell 2 is according to suction side water
Position changes.At idle mode M3, using the cooling fittings motor 6 of the water stirred in shell 2, therefore it is able to suppress excessively
Fever.
In addition, water and air is reduced in 2 internal circulation flow of shell, discharge pressure at idle mode M3, and therefore, baffle
Door 9 lies substantially in closed state.But there is also the situations that when the reduction of the water level in downstream side, baffle door 9 is opened.Separately
Outside, even if the operating of rated speed, because being mixed into a large amount of air, institute will be carried out under the closed sealed condition of baffle door 9
It is low with hydrodynamic force, it is able to suppress the raising of pump power.
Here, water is not discharged substantially, therefore the water level of suction side will not reduce at idle mode M3.But work as horizontal axis
The discharge pressure of immersible pump 1 is when the water level in downstream side, which reduces, to be become the open pressure of baffle door 9, due to draining, sucking
The water level of side reduces.When the water level of suction side reduces, when becoming water level L or less, although stream of the horizontal axis immersible pump 1 based on suction side
Enter premeasuring, but be judged as that a possibility that draining again is low, to shut down.At the time of the operating of horizontal axis immersible pump 1 stops
The shape of continuation set time water level L water level below can be detected using well known water-level gauge etc. in control device (not shown)
After state, then judged, in fact, can not also detecting water level L, it is automatic to carry out and based at the beginning of presetting etc.
Judgement.
On the other hand, in any operation mode, the influx of upstream side increases, and when water level rises, is all converted into other
Operation mode.For example, setting, in the state of below water level L, water level rises, and the water level of suction side is more than water level L.The situation
Under, operation mode is converted into sucking water and air from opening portion 8, sucks air from suction hole 16, and closing baffle door 9
In the state of water in stirring shell 2 idle mode M3.In addition, water level rises, the water of suction side in idle mode M3
When position is more than water level M, operation mode is converted into absorbing water from opening portion 8, absorbs air from suction hole 16, and carry out draining pair
Mixing wastewater with air discharge mode M2.Further, in mixing wastewater with air discharge mode M2, water level rises, and the water level of suction side is super
When crossing water level H, operation mode is converted into sucking the full dose discharging mode M1 of water from opening portion 8 and suction hole 16.
In addition, horizontal axis immersible pump 1 operating stop after, according to the inflow premeasuring of suction side, pumping plant or horizontal axis immersible pump 1
Specification, appropriate judgement operating restarts.Operating may be what water level the water level of suction side is at the time of restarting.
Horizontal axis immersible pump 1 is also equipped with air-release mechanism.Figure 10 is the knot for indicating to be set to the air-release mechanism 23 of horizontal axis immersible pump 1
The synoptic diagram of structure.For example, rising in water level, operation mode is converted into full dose discharging mode M1 from mixing wastewater with air discharge mode M2
When, the air being stranded in shell 2 such as air-release mechanism 23 and be expelled to outside.Air-release mechanism 23 be, for example, can be set in
The door of the baffle-type with small opening of the top of the baffle door 9 of the discharge side installation of horizontal axis immersible pump 1.With in shell 2
Moisture increase, when pressure as defined in internal pressure reaches, the door of baffle-type is open, and the air in shell 2 is expelled to outside.This
Outside, as long as air-release mechanism 23 has the increase with the moisture in shell 2, when internal pressure reaches defined pressure, auto-action
Mechanism, thus, for example, being also possible to be set to the vent valve etc. on the top of shell 2.
Next, being illustrated to the functions and effects of horizontal axis immersible pump 1.As described above, horizontal axis immersible pump 1 has opening
The second suction opening (suction unit 14 etc.) in the position higher than the upper end of the first suction opening (opening portion 8), therefore being capable of root
According to the variation of the water level of suction side, automatically switch operation mode.Specifically, water table ratio of the horizontal axis immersible pump 1 in suction side
When the upper end of two suction openings is high, submerge first and second suction opening in water, with the operating of full dose discharging mode.In addition, horizontal
Axis immersible pump 1 when the upper end of the second suction opening of water table ratio of suction side is low and higher than the upper end of the first suction opening, with from
First suction opening sucks water, and is operated from the mixing wastewater with air discharging mode of the second suction opening sucking air.Moreover,
Horizontal axis immersible pump 1 is when upper end of the suction side to the first suction opening of water table ratio is low, to suck from first and second suction opening
Air and the idle mode for circulating water in shell is operated.
For example, in the case where the water level of suction side rapidly reduces, from full dose discharging mode to mixing wastewater with air discharging mode
Conversion, or converted from mixing wastewater with air discharging mode to idle mode.Horizontal axis immersible pump 1, which is able to maintain that, as a result, carries out impeller 3
The operating of the rated speed of the fittings motor 6 of driving, and inhibit the reduction speed of the water level of suction side.In addition, for example,
In the case that the water level of suction side rapidly rises, converted from idle mode to mixing wastewater with air discharging mode, or from mixing wastewater with air
Discharging mode is converted to full dose discharging mode.Horizontal axis immersible pump 1 is able to maintain that the fortune of the rated speed of fittings motor 6 as a result,
Turn, and inhibits the rate of climb of the water level of suction side.Therefore, it can reduce ON/OFF that fittings motor 6 pumps repeatedly
Frequency.
In addition, do not submerge completely in water in impeller 3 under each operation mode of mixing wastewater with air discharging mode and idle mode,
Air is sucked on one side, is operated on one side, therefore will not apply big negative pressure to impeller 3, in addition, being able to suppress the air from the water surface
Suction vortex.
Moreover, horizontal axis immersible pump 1 can be not provided with complicated control device etc. and realize each operational mode corresponding with water level
Conversion between formula.
In addition, inhalation mask 7 according to Fig.2, is able to suppress the generation of the air suction vortex from the water surface, inhibit vibration
Dynamic, noise.In addition, under mixing wastewater with air discharging mode, for example, the water level with suction side reduces, the suction of the second suction opening
Gas area increases, and therefore, suitably increases the soakage of air, in addition, can swimmingly convert between each operation mode.
Moreover, being equipped with suction hole 16 or suction unit 14 in antetheca 15, therefore empty according to Fig. 3 or inhalation mask shown in Fig. 47
Gas is uniformly flowed into along leading edge 13.Therefore, it is able to suppress the inflow of violent air, inhibits vibration, noise.In addition, in antetheca
15 setting suction holes 16 etc. flow into air capacity to be easy to adjust, and are able to suppress the inflow of foreign matter.
As described above, according to the present embodiment, a kind of horizontal axis immersible pump is capable of providing, even if the water level of suction side is full dose
Water level when draining operating is hereinafter, being also able to maintain that the operating of rated speed, inhibiting stopping repeatedly and starting pump.
(second embodiment)
Next, being illustrated to horizontal axis immersible pump of the present invention to second embodiment.The horizontal axis of present embodiment is latent
In water pump, the shape of inhalation mask 7 and the horizontal axis immersible pump 1 of first embodiment are different.Hereinafter, to the cross with first embodiment
The identical part of axis immersible pump 1 marks identical symbol to illustrate.
Figure 11 is three direction views for indicating the shape of inhalation mask 7 of present embodiment.With first embodiment shown in Fig. 2
Inhalation mask 7 compare, the global shape of inhalation mask 7 is substantially just as but the shape of suction unit 14 and forming position are different.
Figure 12 is an example of the second suction opening as present embodiment, indicates the suction unit 14 for being set to upper wall 10
The top view of shape.Suction unit 14 is that it is attached to be located at leading edge 13 from the beginning 14a direction being located near flange 12 with defined width
Close terminal 14b and formed, and penetrate through upper wall 10 surface and the back side opening, water and air flow freely into.In addition, in order to subtract
The stress that gently generates by the opening of suction unit 14 is concentrated, can will be each angular as arc-shaped.It is submerged in water in suction unit 14
When, it also absorbs water from suction unit 14, when water level reduces, air gradually flows into inhalation mask 7 from the beginning side 14a of suction unit 14.
Particularly, in the present embodiment, when being reduced with water level, opening area makes width from beginning 14a towards the mode that terminal 14b increases
It spends cumulative in 13 side of leading edge (side terminal 14b of suction unit 14) of upper wall 10.Thereby, it is possible to make operation mode with the drop of water level
It is low and smoothly convert.In addition, suitably determining the beginning of suction unit 14 according to conditions such as the tilt angle of upper wall 10, pumping hole diameters
14a, terminal 14b and width.
Figure 13 is other an examples of the second suction opening as present embodiment, indicates the multiple air-breathings for being set to upper wall 10
The top view of the shape in hole 30.The formation condition of multiple suction holes 30 meets condition identical with suction unit 14 shown in Figure 12.
In addition, aperture of suction hole 30 etc. is also suitably determined according to the operating condition of pump.
Figure 14 A is other an examples of the second suction opening as present embodiment, indicates to be set to the multiple narrow of upper wall 10
The top view of the shape of seam 32 indicates that the shape of a slit 32 is triangle, and arranges on the direction parallel with main shaft 4
The example of multiple this slits 32.On the other hand, Figure 14 B indicates that the shape of a slit 32 is rectangle, and relative to main shaft 4
The example of multiple such slits 32 is arranged on vertical direction.The formation condition of multiple slits 32 also meet with Figure 12 shown in
The identical condition of suction unit 14.In addition, width of slit 32 etc. is also suitably determined according to the operating condition of pump.Such as Figure 13 and figure
Shown in 14, be equivalent to the part of suction unit 14 by being formed by multiple openings, so as to keep inhalation mask 7 upper wall 10 it is strong
Degree can constitute inhalation mask 7 with thin plate.
Figure 15 is other an examples of the second suction opening as present embodiment, indicates the suction unit 14 for being set to side wall 11
Shape side view.Suction unit 14 is created as under being located at from the beginning 14a direction for being located at top (direction that water level rises)
The terminal 14b in portion (direction of water level decreasing), is gradually widened towards the width of suction side, and penetrates through the surface and the back side of side wall 11
Opening, water and air flow freely into.In addition, being concentrated to mitigate the stress generated by the opening of suction unit 14, can incite somebody to action
It is each angular as arc-shaped.It when suction unit 14 is submerged in water, also absorbs water from suction unit 14, when water level reduces, air is from suction
The beginning side 14a in gas portion 14 gradually flows into inhalation mask 7.In this case, when being reduced with water level, opening area is from beginning 14a court
The mode increased to terminal 14b keeps width cumulative in the lower side side of side wall 11, so as to make operation mode with water level
It reduces and smoothly converts.In addition, the suction unit 14 for being formed in side wall 11 is same as the case where being formed in upper wall 10, or
Multiple suction holes 30, multiple slits 32 etc..
Figure 16 is the figure for illustrating the operation mode of horizontal axis immersible pump 1 of present embodiment.In addition, in Figure 16, inhalation mask 7
It is shaped to shape shown in Figure 12 and is illustrated, but Figure 13~inhalation mask shown in figure 15 7 is also the same.Horizontal axis diving
It pumps 1 point same as the first embodiment to be, have on the basis of two water levels H, M (H > M) of preset suction side
Three kinds of operation modes, i.e. full dose discharging mode M1, mixing wastewater with air discharge mode M2 and idle mode M3.In this case, water
Position H is set as the beginning 14a of the suction unit 14 of inhalation mask 7.Water level M is set as the position at the top of leading edge 13.In addition, water level L
It is set as, even if impeller 3 rotates, the upper limit of the water level of sufficient water is also supplied without normal direction fittings motor 6.
Figure 17 is the present embodiment illustrated when operation mode is full dose discharging mode M1 (suction side water level > water level H)
The figure of the movement of horizontal axis immersible pump 1.At full dose discharging mode M1, horizontal axis immersible pump 1 and first embodiment shown in Fig. 7
Full dose discharging mode M1 similarly act.
When Figure 18 illustrates that operation mode is mixing wastewater with air discharge mode M2 (water level H >=suction side water level > water level M)
The figure of the movement of the horizontal axis immersible pump 1 of present embodiment.At mixing wastewater with air discharge mode M2, horizontal axis immersible pump 1 and Fig. 8 institute
The mixing wastewater with air discharge mode M2 for the first embodiment shown similarly is acted.
Figure 19 is this embodiment party illustrated when operation mode is idle mode M3 (water level M >=suction side water level > water level L)
The figure of the movement of the horizontal axis immersible pump 1 of formula.At idle mode M3, horizontal axis immersible pump 1 and first embodiment shown in Fig. 9
Idle mode M3 similarly act.
Therefore, according to the present embodiment, effect same as first embodiment can be played.
(third embodiment)
Next, being illustrated to third embodiment of the present invention to horizontal axis immersible pump.With first and second embodiment party
The difference of the horizontal axis immersible pump 1 of formula is, the suction unit in the horizontal axis immersible pump of present embodiment, as the second suction opening
14 are not formed at inhalation mask 7, and are formed in shell 2.Hereinafter, to part identical with the horizontal axis immersible pump 1 of first embodiment
Identical symbol is marked to illustrate.
Figure 20 is the sectional view for indicating the shape of horizontal axis immersible pump 1 of present embodiment.In this case, inhalation mask 7
Global shape is roughly the same with the inhalation mask 7 of first embodiment shown in Fig. 2, still, present embodiment inhalation mask 7 not
There are suction units 14.On the other hand, the top half in the side of shell 2 and on the upstream side than the setting position of impeller 3, shape
At the suction unit 14 for thering are multiple suction holes outwardly and inwardly by perforation shell 2 to constitute.Shell 2 of multiple suction holes from tubular
The beginning 14a of near top be circumferentially formed thereon to the terminal 14b near the cylinder widthwise central of shell 2.In this case
Beginning 14a becomes the suction hole positioned at peak level, and terminal 14b becomes the suction hole positioned at lowest water level.Shown in Figure 20
In example, multiple suction holes arrange identical quantity (identical opening area) from beginning 14a to terminal 14b.Here, in suction unit
14 when submerging in water, also absorbs water from suction unit 14, and when water level reduces, air gradually flows into the beginning side 14a from suction unit 14
In inhalation mask 7.
Figure 21 is the top view for indicating other shapes of horizontal axis immersible pump 1 of present embodiment.As shown in figure 21, for structure
At multiple suction holes of suction unit 14 as shown in figure 20, when low with water level, opening area is from beginning 14a towards terminal 14b
The mode of increase increases the quantity of suction hole, so as to convert operation mode smoothly with the reduction of water level.
In addition, the shape for constituting multiple suction holes of suction unit 14 is not limited to round shape, for example, it may be slit-shaped, it can
Appropriate selection.In addition, the aperture of suction hole, width of slit etc. are suitably determined according to the operating condition of horizontal axis immersible pump 1.And
And beginning 14a, terminal 14b and the width of suction unit 14 according to pumping plant, horizontal axis immersible pump 1 operating condition and suitably determine.
Figure 22 is the figure for illustrating the operation mode of horizontal axis immersible pump 1 of present embodiment.Horizontal axis immersible pump 1 and first and
The identical point of two embodiments is there is three kinds on the basis of two water levels H, M (H > M) of preset suction side
Operation mode, i.e. full dose discharging mode M1, mixing wastewater with air discharge mode M2 and idle mode M3.In this case, water level H is set
It is set to the position of the beginning 14a of the suction unit 14 of shell 2.Water level M is set as the position at the top of leading edge 13.In addition, water level L is set
It is set to, even if impeller 3 rotates, the upper limit of the water level of sufficient water is also supplied without normal direction fittings motor 6.
Figure 23 is the present embodiment illustrated when operation mode is full dose discharging mode M1 (suction side water level > water level H)
The figure of the movement of horizontal axis immersible pump 1.At full dose discharging mode M1, horizontal axis immersible pump 1 and first embodiment shown in Fig. 7
Full dose discharging mode M1 similarly act.
When Figure 24 illustrates that operation mode is mixing wastewater with air discharge mode M2 (water level H >=suction side water level > water level M)
The figure of the movement of the horizontal axis immersible pump 1 of present embodiment.At mixing wastewater with air discharge mode M2, horizontal axis immersible pump 1 and Fig. 8 institute
The mixing wastewater with air discharge mode M2 for the first embodiment shown similarly is acted.
Figure 25 is this embodiment party illustrated when operation mode is idle mode M3 (water level M >=suction side water level > water level L)
The figure of the movement of the horizontal axis immersible pump 1 of formula.At idle mode M3, horizontal axis immersible pump 1 and first embodiment shown in Fig. 9
Idle mode M3 similarly act.
Therefore, according to the present embodiment, effect same as first embodiment can be played.
(the 4th embodiment)
Next, being illustrated to the horizontal axis immersible pump of the 4th embodiment of the invention.With first~third embodiment party
The horizontal axis immersible pump 1 of formula the difference lies in that the horizontal axis immersible pump of present embodiment, which has one end, is connected to inhalation mask 7 or shell
2, the open air entry, that is, air intake duct of the other end, and using the air entry of the other end as the second suction opening.Hereinafter, to first
The identical part of horizontal axis immersible pump 1 of embodiment marks identical symbol to illustrate.
Figure 26 is the side view for indicating the shape of horizontal axis immersible pump 1 of present embodiment.In this case, inhalation mask 7 is whole
Shape is roughly the same with the inhalation mask 7 of first embodiment shown in Fig. 2, but connects in the inhalation mask of present embodiment 7
There is air intake duct 14.Specifically, for example, one end of air intake duct 14 is connected to the side wall 11 of inhalation mask 7, the inside with inhalation mask 7
Connection.Air intake duct 14 is extended fixed length upwards, bends to inverted U-shaped.Moreover, the other end direction of air intake duct 14
Lower section evolution as air entry 14a.According to this structure, temporarily attract upwards from air entry 14a, therefore inhibit air entry
It is blocked in 14a and pipe by the floating material of the water surface.In addition it is also possible to which the other end is blocked, air-breathing is set in the side of air intake duct 14
Mouth 14a.
In addition, the bending direction of air intake duct 14 is not specially limited, still, in order to inhibit because of floating material with the water surface etc.
Damaged caused by collision, it is expected that the upper opening of the upper wall 10 in inhalation mask 7, make protection walls 31 from the leading edge 13 of upper wall 10 to
Top is prominent.In addition, the position of the short transverse of the air entry 14a of air intake duct 14 and caliber are according to pumping plant, horizontal axis immersible pump 1
The operating conditions such as specification and suitably determine.
Figure 27 is the side view for indicating other shapes of horizontal axis immersible pump 1 of present embodiment.As shown in figure 27, air intake duct
14 one end also can connect the upper wall 10 in inhalation mask 7.
Figure 28 is the side view for indicating other shapes of horizontal axis immersible pump 1 of present embodiment.As shown in figure 28, air intake duct
14 one end also can connect in the side wall of shell 2.As shown in these, dive under water as long as one end of air intake duct 14 is connected in horizontal axis
The position of the upstream side sucking air of the impeller 3 of pump 1, the position of air intake duct 14 and shape etc. are just not limited.
Figure 29 is the figure for illustrating the operation mode of horizontal axis immersible pump 1 of present embodiment.Horizontal axis immersible pump 1 and the first~the
The identical point of three embodiments is there is three kinds on the basis of two water levels H, M (H > M) of preset suction side
Operation mode, i.e. full dose discharging mode M1, mixing wastewater with air discharge mode M2 and idle mode M3.In this case, water level H is set
It is set to the position of the air entry 14a of the air intake duct 14 of air intake duct 14.Water level M is set as the position at the top of leading edge 13.In addition, water
Position L is set as, even if impeller 3 rotates, the upper limit of the water level of sufficient water is also supplied without normal direction fittings motor 6.
Figure 30 is the present embodiment illustrated when operation mode is full dose discharging mode M1 (suction side water level > water level H)
The figure of the movement of horizontal axis immersible pump 1.At full dose discharging mode M1, horizontal axis immersible pump 1 and first embodiment shown in Fig. 7
Full dose discharging mode M1 similarly act.
When Figure 31 illustrates that operation mode is mixing wastewater with air discharge mode M2 (water level H >=suction side water level > water level M)
The figure of the movement of the horizontal axis immersible pump 1 of present embodiment.At mixing wastewater with air discharge mode M2, horizontal axis immersible pump 1 and Fig. 8 institute
The mixing wastewater with air discharge mode M2 for the first embodiment shown similarly is acted.
Figure 32 is this embodiment party illustrated when operation mode is idle mode M3 (water level M >=suction side water level > water level L)
The figure of the movement of the horizontal axis immersible pump 1 of formula.At idle mode M3, horizontal axis immersible pump 1 and first embodiment shown in Fig. 9
Idle mode M3 similarly act.
Therefore, according to the present embodiment, effect same as first embodiment can be played.
(the 5th embodiment)
Next, being illustrated to the horizontal axis immersible pump of the 5th embodiment of the invention.With the phase of the 4th embodiment
It is in the horizontal axis immersible pump of present embodiment, have one end and be connected to inhalation mask 7 or shell 2 with point, what the other end opened
Air entry, that is, air intake duct.On this basis, the horizontal axis immersible pump of present embodiment is characterized in that, for determining operation mode
Water level judgement does not use the second aspiration openings.Hereinafter, marking phase to the identical part of horizontal axis immersible pump 1 of first embodiment
With symbol illustrate.
Figure 33 is the side view for indicating the shape of horizontal axis immersible pump 1 of present embodiment.In this case, inhalation mask 7 is whole
Shape is roughly the same with the inhalation mask 7 of first embodiment shown in Fig. 2, still, connects in the inhalation mask 7 of present embodiment
There is air intake duct 14.Specifically, for example, one end of air intake duct 14 is connected to the side wall 11 of inhalation mask 7, the inside with inhalation mask 7
Connection.Air intake duct 14 is extended defined length upwards.Moreover, the other end of air intake duct 14 bends to level, as suction
Port 14a and open.In addition it is also possible to which the other end is blocked, air entry 14a is set in the side of air intake duct 14.
In the present embodiment, by can in mixing wastewater with air discharge mode M2 from air entry 14a air-breathing in a manner of, make to inhale
Water level when port 14a is located at than mixing wastewater with air discharge mode M2 is against the top.In addition, the floating material etc. in order to inhibit the water surface blocks
Air entry 14a, it is expected that air entry 14a is open in the maximum stage for closing catch basin position against the top.In addition, in order to inhibit because inhaling
It is damaged caused by the collision of the floating material of tracheae 14 and the water surface etc., also can according to need setting protection walls 31 etc..
In addition, if one end of air intake duct 14 is connected to the position of the upstream side sucking for the impeller 3 for making air from horizontal axis immersible pump 1
It sets, then also can connect the upper wall 10 in inhalation mask 7, shell 2 etc..In addition, caliber of air intake duct 14 etc. is latent according to pumping plant, horizontal axis
The operating conditions such as the specification of water pump 1 suitably determine.
In addition, air intake duct 14 has air capacity regulating mechanism inside it.Figure 34 A and Figure 34 B are to indicate that air capacity is adjusted
The synoptic diagram of the structure of mechanism 33.Internal pressure is pumped to the pushing variation of the impeller 3 of horizontal axis immersible pump 1 according to the water level of upstream side
It changes.Air capacity regulating mechanism 33 supplies defined air capacity according to the pump internal pressure, to horizontal axis immersible pump 1.As air capacity tune
Mechanism 33 is saved, can be as shown in fig. 34 a using resistance bodies 33a such as restricting orifices, or can also use as illustrated in figure 34b
The pressure valve 33b being opened and closed using defined pressure as threshold value.In the present embodiment, when the water level in suction side reduces, make
Defined air capacity flows into, so that the operation mode of horizontal axis immersible pump 1 switches to mixing wastewater with air discharge mode M2.Specifically,
When the water level of suction side reduces, the pushing force generated by head is reduced, with the upstream side of the impeller 3 of rated speed operating
(suction side) becomes negative pressure.Become the negative pressure bigger than the Resistance Value of air capacity regulating mechanism 33 (or based on setting in the negative pressure
The detection of pressure and the pressure valve that carries out is open) in the case where, from sky is flowed into shell 2 to the air entry 14a of atmosphere opening
Gas is discharged with mixing wastewater with air state.In addition, the Resistance Value of air capacity regulating mechanism 33, setting pressure etc. are latent according to horizontal axis
Specification, operating condition of water pump 1 etc. and suitably set.
Figure 35 is the figure for illustrating the operation mode of horizontal axis immersible pump 1 of present embodiment.Horizontal axis immersible pump 1 and the first~the
The identical point of four embodiments is there is three kinds on the basis of two water levels H, M (H > M) of preset suction side
Operation mode, i.e. full dose discharging mode M1, mixing wastewater with air discharge mode M2 and idle mode M3.In this case, water level H is pre-
First it is limited to the upper end of mixing wastewater with air discharge mode M2.Moreover, air capacity regulating mechanism 33 is redefined for, in suction side water level
When as water level H, become mixing wastewater with air discharge mode M2.Water level M is set as the position at the top of leading edge 13.In addition, water level L is set
It is set to, even if impeller 3 rotates, the upper limit of the water level of sufficient water is also supplied without normal direction fittings motor 6.
Figure 36 is the present embodiment illustrated when operation mode is full dose discharging mode M1 (suction side water level > water level H)
The figure of the movement of horizontal axis immersible pump 1.At full dose discharging mode M1, horizontal axis immersible pump 1 and first embodiment shown in Fig. 7
Full dose discharging mode M1 similarly act.But in the present embodiment, according to the structure of air capacity regulating mechanism 33, no
It only include that the opening (air capacity regulating mechanism 33 and opening portion 8) being connected to the inside of horizontal axis immersible pump 1 is all submerged in water,
Include the case where all closing.
When Figure 37 illustrates that operation mode is mixing wastewater with air discharge mode M2 (water level H >=suction side water level > water level M)
The figure of the movement of the horizontal axis immersible pump 1 of present embodiment.At mixing wastewater with air discharge mode M2, horizontal axis immersible pump 1 and Fig. 8 institute
The mixing wastewater with air discharge mode M2 for the first embodiment shown similarly is acted.But in the present embodiment, as described above,
It is redefined for starting the Resistance Value of air-breathing in the upper end mixing wastewater with air discharge mode M2 water level by air capacity regulating mechanism 33, from
And operation mode switches to mixing wastewater with air discharge mode M2.
Figure 38 is this embodiment party illustrated when operation mode is idle mode M3 (water level M >=suction side water level > water level L)
The figure of the movement of the horizontal axis immersible pump 1 of formula.At idle mode M3, horizontal axis immersible pump 1 and first embodiment shown in Fig. 9
Idle mode M3 similarly act.
Therefore, according to the present embodiment, effect same as first embodiment can be played.
(sixth embodiment)
Next, the horizontal axis immersible pump to sixth embodiment of the invention is illustrated.In existing horizontal axis immersible pump
In, when water level reduces, in the operating for the idle mode for stirring water and air in shell, it is difficult to carry out fittings motor
It is cooling.In contrast, in the present embodiment, the leaf by making to become defined discharge angle, θ or more at a distance of the lower end of impeller
The position of wheel is consistent with water level, though in the operating of idle mode, also make hydropexis in shell, make fittings motor maintenance do not have
Enter the state in water, thus cooling fittings motor.Hereinafter, to part identical with the horizontal axis immersible pump 1 of first embodiment
Identical symbol is marked to illustrate.
In addition, the leading edge 13 of inhalation mask 7 is provided on the basis of the position of impeller 3 in order to facilitate understanding in the following description
Deng height and position point, for convenience, setting horizontal axis immersible pump 1 only have full dose discharging mode and two kinds of idle mode operating
Mode.But even if the situation, when conversion between full dose discharging mode and idle mode, there is also mixing wastewater with air states.
But so-called mixing wastewater with air state and the mixing wastewater with air discharge mode illustrated by the respective embodiments described above in present embodiment
Each effect of the invention in order to obtain of M2 and the operation mode that is energetically arranged is different.Therefore, mixed containing air water for having
The horizontal axis immersible pump 1 of the respective embodiments described above of three kinds of operation modes of discharge mode is closed, it also can be using present embodiment
Content.
Figure 39 is the sectional view for indicating the structure of horizontal axis immersible pump 1 of present embodiment.In the horizontal axis of present embodiment
In immersible pump 1, compare first embodiment the case where, the difference lies in that carrying out regulation inhalation mask 7 on the basis of the position of impeller 3
Leading edge 13 height and position A.
Figure 40 A is the main view of the major part of the impeller 3 for the blade that impeller 3 has from rotary axis direction.
In figure, the symbol of the position and the height and position of leading edge 13 that will be equivalent to the height and position of the leading edge 13 of inhalation mask 7 is consistently set
For A, the position of the lug boss of impeller 3 is set as Ai, the position of the outer terminal of impeller 3 is set as Ao.In addition, Figure 40 B is and figure
The opening figure of the corresponding impeller 3 of each position shown in 40A.The discharge angle of position A is θ, and the discharge angle of position Ai is θ i, position
The discharge angle for setting Ao is θ o.Closer to center, discharge angle is bigger, and further away from center (closer to periphery), θ is smaller, therefore θ
I > θ > θ o.Generally, the pressure height assigned to the fluid in θ big position discharge assigns the fluid in θ small position discharge
Pressure it is low.
In the plummet direction lower side of main shaft 4, when water level reduces, in the small position of discharge angle, θ, water and impeller 3 are contacted,
Therefore the pressure that impeller 3 assigns water becomes smaller.Particularly, it is being intended to that water and air is discharged from the inflow air of the opening portion of inhalation mask 78
Fluid-mixing when, operation mode changes according to the inflow ratio of water and air.
The inflow of water than it is big in the case where, using discharge pressure, the baffle door 9 for being supported in the discharge side of shell 2 is opened,
Drained, the inflow of air than it is big in the case where, discharge pressure reduce, baffle door 9 cannot be opened, stirred in shell 2
Water and air.
Here, water level is when the plummet direction lower side of main shaft 4 is in the position of defined discharge angle, θ of impeller 3, energy
Enough states with rated speed and the maintenance of the closed state of baffle door 9 to be made to hydropexis, until fittings motor 6 is in shell
The water level in water is submerged in 2.Moreover, the water level as defined in becoming this when discharge angle, θ is the impeller diameter from 3 lower end of impeller
10~25% top of ratio, preferably 10~20% tops.
In addition, when the big position of the ratio discharge angle, θ of impeller 3 contacts, baffle door 9 is opened, discharge when water level rises
Water.On the other hand, work as water level decreasing, when the small position of the ratio discharge angle, θ of impeller 3 contacts, motor 6 submerges water under water
In height before, the water in shell 2 cannot be maintained.
Figure 41 is three direction views for indicating the shape of inhalation mask 7 of present embodiment.Inhalation mask 7 includes upper wall 10；From upper
The two side walls 11 that the two side ends of wall 10 are just extended separately down；And it is connected to the flange 12 of shell 2.10 direction of upper wall
Suction side (left direction of side view) tilts downwards.It dives under water from the both ends of the leading edge 13 of upper wall 10 to horizontal axis the lower end of side wall 11
2 close beneath of shell of pump 1 tilts respectively.Until leading edge 13 is located at the water level of 3 lower end of impeller.More specifically, preferably
Positioned at from impeller lower end, positioned at 10~25% top of impeller diameter ratio.
The opening portion 8 of inhalation mask 7 is arranged to this embodiment party of the suction side mode inclined state higher than the other side
First suction opening of formula.When water level reduces, air gradually flows into suction below the leading edge 13 of upper for being located at opening portion 8
Enter in cover 7.Leading edge 13 is located at the height of 3 lower end of impeller, thus can in low water level before carry out full dose discharging mode
Operating be able to suppress noise in the operating of idle mode, inhibit the powder-refining with water in shell 2 to splash.
In addition, until the water level that the position of leading edge 13 is set as to 3 lower end of impeller, specifically, being set as under impeller 3
It holds, 10~25% top of impeller diameter ratio can also apply to as described above, being not limited to present embodiment above-mentioned
Each embodiment use various inhalation masks 7.But in the case where inhalation mask 7 has antetheca 15 shown in Fig. 3, herein
The position of so-called leading edge 13 is equivalent to the position of the lower end of antetheca 15.It is special in the shape of the inhalation mask 7 of each embodiment as a result,
On the basis of some effects, as described above, the operating for being able to carry out full dose discharging mode is also acted as when low water level etc.
Effect.
Figure 42 is the chart for indicating the performance curve of horizontal axis immersible pump 1, and horizontal axis is flow, and the longitudinal axis is lift and power.It is logical
The specification point flow of full dose draining operating when often is Q1, lift H1.In addition, P1 when power is flow Q1.Work as discharge side
Water level increase and back pressure when getting higher, flow is reduced, gradually mobile to the left side of Q1.At this point, horizontal axis immersible pump 1 is arranged as full dose
The operating of aqueous mode.
When the water level of suction side reduces, when flowing into air from the opening portion of inhalation mask 78, as mixing wastewater with air shape in shell 2
State, head curve and dynamic curve become the curve of ratio reduction as shown in the wave in chart.It reduces than according to air
Influx and change, the influx of air is more, and curve is more reduced.
When water level further decreases, and discharge pressure reduces, horizontal axis immersible pump 1 becomes in the state for enclosing baffle door 9
Under operating, i.e. idle mode operating.Flow at this time becomes zero, and power becomes P2.Generally, axial blade is zero in flow
Near, power rises, it is therefore desirable for being set as being converted into idle mode when sucking the low water level of air as much as possible.By
This, horizontal axis immersible pump 1 can carry out energy-saving operation with the power P2 (P2 < P1) lower than specification point power P1.
Determine that air is begun to flow by the height of the leading edge 13 (or lower end of antetheca 15) of inhalation mask 7.When leading edge 13
When position is high, air is flowed into from opening portion 8 earlier, becomes mixing wastewater with air state, lift reduces, cannot be with the water level of discharge side
Increase and correspond to, not can be carried out discharge when low water level.In addition, water level reduce when idle mode in, the water in shell 2 is easy to
Suction side is splashed to from opening portion 8, and generates the noise generated by the stirring in shell 2.Therefore, by by inhalation mask 7
The position of leading edge 13 be set in defined height, can be before the height that water level is reduced to leading edge 13, there was only the full dose of water
Discharging mode is operated, and the water of suction side is discharged as early as possible.In addition, being begun to flow into consistently when water level is reduced with air
As idle mode, so that the state that water maintains in shell 2 remains in operation, therefore fittings motor 6 can be cooled down.
In addition, when air is begun to flow into, the water in shell 2 is insufficient when the height of leading edge 13 is too low, accordingly, it is difficult to
Cooling fittings motor 6.Therefore, the leading edge 13 of inhalation mask 7 is set in following position: gear cannot be opened under mixing wastewater with air state
The position of plate door 9 hereinafter, and be able to carry out air and begin to flow into, and underwater electric cooling as much as possible is maintained in shell 2
The height and position more than position of the water of machine 6.Specifically, the height and position of the leading edge 13 of inhalation mask 7 as described above, for from
3 lower end of impeller is risen, 10~25% top of impeller diameter ratio, preferably 10~20% top.
Figure 43 is the figure for illustrating the operation mode of horizontal axis immersible pump 1 of present embodiment.In the present embodiment, with it is above-mentioned
Each embodiment it is different, horizontal axis immersible pump 1 only has two kinds of fortune on the basis of a water level L of preset suction side
Rotary-die type, that is, full dose discharging mode M1 and idle mode M3.In this case, water level L is set as the height and position of leading edge 13.
Figure 44 is the present embodiment illustrated when operation mode is full dose discharging mode M1 (suction side water level > water level L)
The figure of the movement of horizontal axis immersible pump 1.At full dose discharging mode M1, horizontal axis immersible pump 1 and first embodiment shown in Fig. 7
Full dose discharging mode M1 similarly act.
Figure 45 is the horizontal axis for illustrating present embodiment when operation mode is idle mode M3 (water level L >=suction side water level)
The figure of the movement of immersible pump 1.At idle mode M3, the idle running mould of horizontal axis immersible pump 1 and first embodiment shown in Fig. 9
Formula M3 is similarly acted.
According to the present embodiment, effect same as first embodiment is played.Specifically, in the present embodiment,
The height and position that the leading edge 13 of inhalation mask 7 waits is provided as described above, thus also being capable of cooling water in the operating of idle mode
Lower motor 6.Therefore, fittings motor 6 is able to maintain that the operating of rated speed in idle mode, reduces underwater electricity
Motivation 6 is the toggle frequency of the ON/OFF pumped.Moreover, the horizontal axis immersible pump 1 of present embodiment by with the respective embodiments described above
It is any be combined, so as to use three kinds of operation modes containing mixing wastewater with air discharging mode M2.This implementation as a result,
The horizontal axis immersible pump 1 of mode can also play the distinctive effect of the respective embodiments described above simultaneously.
(other embodiment)
In the respective embodiments described above, the shape about inhalation mask 7, illustrates multiple, but the present invention is not limited thereto.Example
Such as, also it is able to carry out deformation below.
Firstly, upper wall 10 tilts downwards from discharge side towards suction side in the respective embodiments described above, but can also be with
For level.On the other hand, the lower end (ora terminalis) of side wall 11 is in the respective embodiments described above also from leading edge or antetheca side direction row
Lateral inclined downward out, but may be level.
Figure 46 is two direction views of the shape of the horizontal inhalation mask 7 of example upper wall 10.On the other hand, Figure 47 is example side wall
Two direction views of the shape of the inhalation mask 7 of 11 lower end 11a level.In addition, inhalation mask 7 shown in Figure 46 and Figure 47 is assumed respectively
For the shape distortion of inhalation mask 7 shown in Fig. 3 is formed.Particularly, even if the upper wall shown in inhalation mask 7 as shown in figure 46
It, also can be by forming the suction unit as the second suction opening in arbitrary position come with the first~the in the case where 10 levels
Five embodiments similarly set operation mode.For example, as shown in figure 46, in the antetheca 15 extended downward from upper wall 10
It is formed with the suction hole 16 as the second suction opening, in this case, can be with inhalation mask 7 shown in Fig. 3 are used the case where
Similarly apply.
In addition, can be formed in upper wall 10 and be opened as the second sucking in the case where upper wall 10 is horizontal and antetheca is not present
The suction unit of mouth.For example, by the height and position of upper wall 10, that is, the water level for being formed with the position of the second suction opening is set as
H.In this case, the operation mode as horizontal axis immersible pump 1, can set full dose draining mould in suction side water level > water level H
Formula M1 sets mixing wastewater with air discharge mode M2 in suction side when water level=water level H, can also be in water level H > suction side water level
Set idle mode M3.
In addition, side wall 11 is in the respective embodiments described above from the sagging setting in the both ends of upper wall 10, as long as but downwards
It is extended, then can be tilted to the outside of inhalation mask 7 or inside, can also be, for example, that there is circular shape on the outside.Separately
Outside, the both ends of upper wall 10 herein not only indicate stringent end, are also possible to be biased to the position of inside from both ends.
In addition, the shape for constituting the leading edge 13 of the upper wall 10 of protrusion is arch, but can also in inhalation mask 7 shown in Fig. 2
Think such as chevron.In addition, be not limited to must be since the shape the both ends of leading edge 13 for protrusion herein, it can also be with leading edge
13 a part constitutes protrusion.Moreover, the setting quantity of protrusion be also possible to it is multiple.
Figure 48 is the perspective view for the shape that a part of example leading edge 13 constitutes the inhalation mask 7 of protrusion 40.In this embodiment, convex
Portion 40 is formed in the central part of leading edge 13, and shape is arch.Figure 49 is that a part of example leading edge 13 constitutes the suction of protrusion 40
Enter the other shapes of perspective view of cover 7.In the example, protrusion 40 is formed in the central part of leading edge 13, but its shape is chevron.Figure
50 be the perspective view for the shape that a part of example leading edge 13 constitutes the inhalation mask 7 of protrusion 40.In the example, two are formed in leading edge 13
A protrusion 40, shape are respectively arch.In addition, Figure 51 is the other shapes of perspective view of example inhalation mask 7.In addition to above-mentioned
Other than the shape of inhalation mask 7, additionally it is possible to be considered as the combination of the leading edge 13 of upper wall 10 and the edge of the leading edge 11b of side wall 11 convex
Portion.That is, the both ends of leading edge 13 in this case are equivalent to the lower end of leading edge 11b.
In addition, antetheca 15 extends downward from the leading edge 13 of upper wall 10 to be set in Fig. 3 and inhalation mask shown in Fig. 47
It sets, but antetheca 15 may not necessarily be also extended from leading edge 13.
Figure 52 is the other shapes of sectional view of example inhalation mask 7.Antetheca 15 can also be from downstream deviateing leading edge
The inside of 13 upper wall 10 is extended downward.Here, the position that antetheca 15 is connect with the inside of upper wall 10 is preferably energy
Enough ignore because antetheca 15 there are due to issuable suction resistance position.Here, by connecting with shell 2 from inhalation mask 7
The interval of end to antetheca 15 of side be set as X, the diameter of impeller 3 is set as D, being then spaced X is preferably D~1.5D or more.
In addition, inhalation mask 7 shown in Figure 52 can be considered as, Fig. 3 and inhalation mask shown in Fig. 47 with upper wall 10 and side wall 11 together in the past
Side mode outstanding deforms forward for the position of wall 15.In this case, as long as the overhang of upper wall 10 and side wall 11 plays
Effect illustrated by the respective embodiments described above, is not just defined especially.
In addition, second suction opening, that is, suction unit 14 is made of multiple notch in inhalation mask 7 shown in Fig. 4, integrally see
It is up zigzag or corrugated, still, such as there may also be made of single notch.But it is inhaled from inhibition
From the perspective of noise when gas, there are multiple notch are more advantageous.In addition, the shape of a notch can also apply arch, mountain
The various shapes such as shape or convex.
In addition, illustrating the suction unit 14 being made of multiple notch in inhalation mask 7 shown in Fig. 4 and being formed in antetheca 15
The case where, but it can also be formed in upper wall 10, the lower end (ora terminalis) of side wall 11 can also be formed in.
Figure 53 is to indicate that multiple notch 41 as suction unit 14 are set to the perspective view of the shape of the inhalation mask 7 of upper wall 10.
On the other hand, Figure 54 is to indicate that multiple notch 41 as suction unit 14 are set to the shape of the inhalation mask 7 of the lower end of side wall 11
Perspective view.
In addition, in Fig. 3 and inhalation mask shown in Fig. 47, antetheca 15 is from the sagging setting of leading edge 13 of upper wall 10, but only
It to be extended downward, sagging may not necessarily also be arranged.Antetheca 15 for example can be with inclined towards the inside of inhalation mask 7
Mode is extended, and can also be connect via curved surface with upper wall 10.
Figure 55 is to indicate antetheca 15 towards the inhalation mask 7 inside of inhalation mask 7 inclination and connect via curved surface with upper wall 10
Shape perspective view.The shape distortion of inhalation mask 7 shown in Fig. 4 is formed in addition, inhalation mask 7 shown in Figure 55 is assumed to be.
By tilting antetheca 15 towards the inside of inhalation mask 7, compared to the antetheca that the sagging setting of leading edge 13 from upper wall 10 has notch
15 the case where, opening portion 8 narrow relative to the amount of opening of the inner space of inhalation mask 7, therefore are not easy noise passing to outside.Cause
This can further suppress noise especially when operation mode is idle mode.On the other hand, by making the front end of inhalation mask 7
With circle, it is not easy to be attached to the front end of inhalation mask 7 to flow through the rubbish come from upstream side.
In addition, foregoing describe the shapes of various inhalation masks 7 used without certain independent, can also be made into each feature
The shape being composed.For example, inhalation mask 7 can have two kinds of 14 both sides of suction unit exemplified by Figure 53 and Figure 54.
Secondly, in the respective embodiments described above, pump main body is flat relative to the water surface for the overall structure of horizontal axis immersible pump 1
Row is horizontally arranged.In addition, so-called pump main body and shell 2, more specifically herein, with the main shaft being configured in shell 2
4 is synonymous.But the present invention is not limited to the pump of this horizontally disposed pump main body, it can also apply to pump main body towards under suction side
The pump that side is obliquely arranged.
In addition, in the respective embodiments described above, shell 2 and inhalation mask 7 are made into fission.Such advantage point is, is inhaling
In the case where entering 7 breakage of cover, being altered to other shapes of cover according to purpose and by inhalation mask 7, can easily it be replaced with other
Inhalation mask 7.But this structure not necessarily, shell 2 and inhalation mask 7 can be integrated.
In addition, in the respective embodiments described above, as shown in Figure 1, impeller 3 is supported in the mode being accommodated in shell 2, but
It is that there may also be make main shaft 4 towards the extension of inhalation mask 7, so that impeller 3 reaches the situation in inhalation mask 7.
It is understood, therefore, that the present invention includes the embodiment etc. that do not record herein.Therefore, of the invention technical
Range is only determined by the invention specific item of claims appropriate according to above-mentioned explanation.
Japanese Patent Application 2015-093983 (applying date: on May 1st, 2015), Japanese Patent Application 2015- is cited herein
No. 093984 (applying date: on May 1st, 2015), Japanese Patent Application 2015-093985 (applying date: on May 1st, 2015), day
This Patent 2015-093986 (applying date: on May 1st, 2015), No. 2015-093987 (applying date: 2015 of Japanese Patent Application
On May 1) and Japanese Patent Application 2015-146260 (applying date: on July 24th, 2015) full content.
Symbol description
1-horizontal axis immersible pump, 2-shells, 3-impellers, 7-inhalation masks, 8-opening portions, 14-suction units.
Claims (11)
1. a kind of horizontal axis immersible pump comprising:
Shell, with suction inlet and outlet；
Impeller is supported in above-mentioned shell；
Inhalation mask is connected to above-mentioned suction inlet；
First suction opening is set to above-mentioned inhalation mask, and is opened on the position lower than the upper end of above-mentioned impeller；And
Second suction opening, at least one party in above-mentioned inhalation mask and above-mentioned shell are set on the upstream side than above-mentioned impeller,
And it is opened on the position higher than the upper end of above-mentioned first suction opening,
Above-mentioned inhalation mask includes
Upper wall；And
The side wall extended downward from above-mentioned upper wall,
The leading edge of above-mentioned upper wall has the position higher than the up-front both ends,
Above-mentioned second suction opening is the opening by above-mentioned leading edge and the straight line encirclement for linking the up-front both ends.
2. a kind of horizontal axis immersible pump comprising:
Shell, with suction inlet and outlet；
Impeller is supported in above-mentioned shell；
Inhalation mask is connected to above-mentioned suction inlet；
First suction opening is set to above-mentioned inhalation mask, and is opened on the position lower than the upper end of above-mentioned impeller；And
Second suction opening, at least one party in above-mentioned inhalation mask and above-mentioned shell are set on the upstream side than above-mentioned impeller,
And it is opened on the position higher than the upper end of above-mentioned first suction opening,
Above-mentioned inhalation mask includes
Upper wall；
The side wall extended downward from above-mentioned upper wall；And
The antetheca extended downward from above-mentioned upper wall,
Above-mentioned second suction opening is the hole for penetrating through above-mentioned antetheca.
3. a kind of horizontal axis immersible pump comprising:
Shell, with suction inlet and outlet；
Impeller is supported in above-mentioned shell；
Inhalation mask is connected to above-mentioned suction inlet；
First suction opening is set to above-mentioned inhalation mask, and is opened on the position lower than the upper end of above-mentioned impeller；And
Second suction opening, at least one party in above-mentioned inhalation mask and above-mentioned shell are set on the upstream side than above-mentioned impeller,
And it is opened on the position higher than the upper end of above-mentioned first suction opening,
Above-mentioned inhalation mask includes
Upper wall；
The side wall extended downward from above-mentioned upper wall；And
The antetheca extended downward from above-mentioned upper wall,
Above-mentioned first suction opening is the opening surrounded by the lower end of above-mentioned antetheca and the lower end of above-mentioned side wall,
Above-mentioned second suction opening is at least one notch that above-mentioned antetheca is connected to and be formed in above-mentioned first suction opening
The opening surrounded with the straight line for the lower end for linking above-mentioned antetheca.
4. a kind of horizontal axis immersible pump comprising:
Shell, with suction inlet and outlet；
Impeller is supported in above-mentioned shell；
Inhalation mask is connected to above-mentioned suction inlet；
First suction opening is set to above-mentioned inhalation mask, and is opened on the position lower than the upper end of above-mentioned impeller；And
Second suction opening, at least one party in above-mentioned inhalation mask and above-mentioned shell are set on the upstream side than above-mentioned impeller,
And it is opened on the position higher than the upper end of above-mentioned first suction opening,
Above-mentioned inhalation mask includes
Upper wall；And
The side wall extended downward from above-mentioned upper wall,
Above-mentioned first suction opening is the opening surrounded by the lower end of the leading edge of above-mentioned upper wall and above-mentioned side wall,
Above-mentioned second suction opening is at least one notch that above-mentioned upper wall is connected to and be formed in above-mentioned first suction opening
The opening surrounded with the up-front straight line for linking above-mentioned upper wall or be on being connected to and be formed in above-mentioned first suction opening
It states at least one notch of side wall and links the opening that the straight line of the lower end of above-mentioned side wall surrounds.
5. a kind of horizontal axis immersible pump comprising:
Shell, with suction inlet and outlet；
Impeller is supported in above-mentioned shell；
Inhalation mask is connected to above-mentioned suction inlet；
First suction opening is set to above-mentioned inhalation mask, and is opened on the position lower than the upper end of above-mentioned impeller；And
Second suction opening, at least one party in above-mentioned inhalation mask and above-mentioned shell are set on the upstream side than above-mentioned impeller,
And it is opened on the position higher than the upper end of above-mentioned first suction opening,
Above-mentioned inhalation mask includes
Upper wall；And
The side wall extended downward from above-mentioned upper wall,
Above-mentioned second suction opening is formed at the opening of above-mentioned upper wall or above-mentioned side wall.
6. a kind of horizontal axis immersible pump comprising:
Shell, with suction inlet and outlet；
Impeller is supported in above-mentioned shell；
Inhalation mask is connected to above-mentioned suction inlet；
First suction opening is set to above-mentioned inhalation mask, and is opened on the position lower than the upper end of above-mentioned impeller；
Second suction opening, at least one party in above-mentioned inhalation mask and above-mentioned shell are set on the upstream side than above-mentioned impeller,
And it is opened on the position higher than the upper end of above-mentioned first suction opening；And
One end is connected to above-mentioned inhalation mask or above-mentioned shell and the open air intake duct for air entry of the other end,
Above-mentioned inhalation mask includes
Upper wall；And
The side wall extended downward from above-mentioned upper wall,
Above-mentioned second suction opening is above-mentioned air entry.
7. horizontal axis immersible pump described according to claim 1~any one of 6, which is characterized in that
The leading edge of the above-mentioned upper wall of above-mentioned inhalation mask or the antetheca extended downward from the above-mentioned upper wall of above-mentioned inhalation mask
Lower end, positioned at the top position from the lower end of above-mentioned impeller according to the diameter of above-mentioned impeller than 10~25%.
8. horizontal axis immersible pump described according to claim 1~any one of 6, which is characterized in that
It is also equipped with baffle door, which is set to the side of the above-mentioned outlet of above-mentioned shell, and can utilize from the outlet
The pressure of the fluid of discharge is opened and closed.
9. horizontal axis immersible pump described according to claim 1~any one of 6, which is characterized in that
It is also equipped with air-release mechanism, when the internal pressure of above-mentioned shell has reached defined pressure, which will be in above-mentioned shell
Air be emitted into outside.
10. a kind of inhalation mask is used for horizontal axis immersible pump,
The inhalation mask is characterized in that, comprising:
Outlet opening；
Upper wall；
Side wall is extended downward from above-mentioned upper wall；
Antetheca is extended downward from above-mentioned upper wall；
First suction opening is surrounded by the lower end of above-mentioned antetheca and the lower end of above-mentioned side wall；And
Second suction opening, be connected to and be formed in above-mentioned first suction opening above-mentioned antetheca at least one notch and
Link the opening that the straight line of the lower end of above-mentioned antetheca surrounds.
11. a kind of inhalation mask is used for horizontal axis immersible pump,
The inhalation mask is characterized in that, comprising:
Outlet opening；
Upper wall；
Side wall is extended downward from above-mentioned upper wall；
First suction opening is surrounded by the lower end of the leading edge of above-mentioned upper wall and above-mentioned side wall；And
Second suction opening, be connected to and be formed in above-mentioned first suction opening above-mentioned upper wall at least one notch and
Link above-mentioned upper wall up-front straight line surround opening or be to be connected to and be formed in above-mentioned with above-mentioned first suction opening
The opening that the straight line of the lower end of at least one notch and above-mentioned side wall of connection of side wall surrounds.
Applications Claiming Priority (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-093986 | 2015-05-01 | ||
| JP2015093986 | 2015-05-01 | ||
| JP2015-093983 | 2015-05-01 | ||
| JP2015093987 | 2015-05-01 | ||
| JP2015-093987 | 2015-05-01 | ||
| JP2015-093985 | 2015-05-01 | ||
| JP2015093983 | 2015-05-01 | ||
| JP2015093985 | 2015-05-01 | ||
| JP2015093984 | 2015-05-01 | ||
| JP2015-093984 | 2015-05-01 | ||
| JP2015-146260 | 2015-07-24 | ||
| JP2015146260 | 2015-07-24 | ||
| PCT/JP2016/062987 WO2016178387A1 (en) | 2015-05-01 | 2016-04-26 | Horizontal shaft submersible pump and suction cover used for horizontal shaft submersible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107429701A CN107429701A (en) | 2017-12-01 |
| CN107429701B true CN107429701B (en) | 2019-02-01 |
Family
ID=57217657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680021343.3A Active CN107429701B (en) | 2015-05-01 | 2016-04-26 | The inhalation mask that horizontal axis immersible pump and horizontal axis immersible pump use |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6504247B2 (en) |
| KR (1) | KR102004207B1 (en) |
| CN (1) | CN107429701B (en) |
| TW (1) | TWI704287B (en) |
| WO (1) | WO2016178387A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7178194B2 (en) * | 2018-07-13 | 2022-11-25 | 株式会社クボタ | Suction cover, horizontal shaft pump and pump gate |
| JP7186119B2 (en) * | 2019-03-27 | 2022-12-08 | 株式会社クボタ | Operation method of suction cover, horizontal shaft pump, pump gate and pump gate |
| JP2021014815A (en) * | 2019-07-12 | 2021-02-12 | 株式会社石垣 | Pump gate using vertical shaft submerged pump |
| JP7480934B2 (en) | 2019-08-05 | 2024-05-10 | 株式会社ミゾタ | Submersible pumps and their equipment |
| JP7306971B2 (en) | 2019-11-18 | 2023-07-11 | 株式会社酉島製作所 | pump |
| JP7217410B2 (en) * | 2020-03-04 | 2023-02-03 | 株式会社石垣 | Horizontal shaft submersible pump and suction cover used for horizontal submersible pump |
| JP2022179126A (en) | 2021-05-21 | 2022-12-02 | 株式会社ミゾタ | Submersible pump with air tube, and its equipment |
| JP2022181398A (en) | 2021-05-26 | 2022-12-08 | 株式会社ミゾタ | Submersible pump with air tube, and its equipment |
| KR102539808B1 (en) * | 2021-07-08 | 2023-06-07 | 한국과학기술연구원 | Hydrophilic toothed impeller type oil transportation device |
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| JP2002275870A (en) * | 2001-03-15 | 2002-09-25 | Ishikawajima Harima Heavy Ind Co Ltd | Horizontal shaft pump gate |
| JP2004143885A (en) * | 2002-10-28 | 2004-05-20 | Ishikawajima Harima Heavy Ind Co Ltd | Pump gate |
| JP2005290972A (en) * | 2004-03-12 | 2005-10-20 | Ishikawajima Harima Heavy Ind Co Ltd | Pump gate and method for operating the same |
| JP2006022611A (en) * | 2004-07-09 | 2006-01-26 | Torishima Pump Mfg Co Ltd | Pump gate |
| CN101235824A (en) * | 2007-01-31 | 2008-08-06 | 株式会社日立工业设备技术 | Tubular pump |
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| JP2001304197A (en) * | 2000-04-28 | 2001-10-31 | Kubota Corp | Submerged pump |
| JP2002021050A (en) * | 2000-07-11 | 2002-01-23 | Mizota Corp | Gate pump |
| JP3749456B2 (en) | 2001-06-20 | 2006-03-01 | 株式会社荏原製作所 | Pump gate |
| JP2004044138A (en) * | 2002-07-09 | 2004-02-12 | Ishikawajima Harima Heavy Ind Co Ltd | Pump gate |
| JP2004156255A (en) * | 2002-11-05 | 2004-06-03 | Kubota Corp | Pump gate |
| JP2006152978A (en) * | 2004-12-01 | 2006-06-15 | Nishida Marine Boiler Co Ltd | Pump structure mounted on gate facility |
| JP4729960B2 (en) * | 2005-04-08 | 2011-07-20 | トヨタ自動車株式会社 | Friction braking device for vehicle |
| JP2006316646A (en) * | 2005-05-10 | 2006-11-24 | Nishida Marine Boiler Co Ltd | Attachment and detachment mechanism of pump in gate with pump |
| JP4566852B2 (en) * | 2005-07-25 | 2010-10-20 | 株式会社荏原製作所 | Horizontal axis pump, pump gate equipment, drainage station |
| JP4868886B2 (en) * | 2006-02-28 | 2012-02-01 | 株式会社クボタ | Pump device and pump gate device |
| JP4889334B2 (en) * | 2006-03-24 | 2012-03-07 | 株式会社クボタ | Pump device and pump gate device |
| CN203500043U (en) * | 2013-09-03 | 2014-03-26 | 上海人民企业集团水泵有限公司 | Automatic mixing submersible sewage pump |
| JP2015078679A (en) * | 2013-10-18 | 2015-04-23 | 株式会社酉島製作所 | Pump |
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2016
- 2016-04-26 WO PCT/JP2016/062987 patent/WO2016178387A1/en active Application Filing
- 2016-04-26 CN CN201680021343.3A patent/CN107429701B/en active Active
- 2016-04-26 KR KR1020177028665A patent/KR102004207B1/en active IP Right Grant
- 2016-04-26 JP JP2017516596A patent/JP6504247B2/en active Active
- 2016-04-29 TW TW105113544A patent/TWI704287B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002275870A (en) * | 2001-03-15 | 2002-09-25 | Ishikawajima Harima Heavy Ind Co Ltd | Horizontal shaft pump gate |
| JP2004143885A (en) * | 2002-10-28 | 2004-05-20 | Ishikawajima Harima Heavy Ind Co Ltd | Pump gate |
| JP2005290972A (en) * | 2004-03-12 | 2005-10-20 | Ishikawajima Harima Heavy Ind Co Ltd | Pump gate and method for operating the same |
| JP2006022611A (en) * | 2004-07-09 | 2006-01-26 | Torishima Pump Mfg Co Ltd | Pump gate |
| CN101235824A (en) * | 2007-01-31 | 2008-08-06 | 株式会社日立工业设备技术 | Tubular pump |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102004207B1 (en) | 2019-07-26 |
| JP6504247B2 (en) | 2019-04-24 |
| CN107429701A (en) | 2017-12-01 |
| JPWO2016178387A1 (en) | 2018-02-08 |
| TW201708708A (en) | 2017-03-01 |
| KR20170127007A (en) | 2017-11-20 |
| WO2016178387A1 (en) | 2016-11-10 |
| TWI704287B (en) | 2020-09-11 |
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