CN205530649U - Drain pump device - Google Patents
Drain pump device Download PDFInfo
- Publication number
- CN205530649U CN205530649U CN201620176283.XU CN201620176283U CN205530649U CN 205530649 U CN205530649 U CN 205530649U CN 201620176283 U CN201620176283 U CN 201620176283U CN 205530649 U CN205530649 U CN 205530649U
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- China
- Prior art keywords
- pump
- swirling
- pump device
- gullet
- immersible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000009189 diving Effects 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 68
- 238000009434 installation Methods 0.000 description 8
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 7
- 238000007599 discharging Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Sewage (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a drain pump device to fairly simple structure is followed the sunction inlet and is inhaleed sewage etc. Along with the operation of immersible pump, thereby makes the stable vortex -like 's of bottom of gullet production rotatory inlet flow, and the foreign matter is also discharged to the basin is outer along with this rotation inlet flow high -efficiently, and the foreign matter that the messenger becomes malodorous reason is not detained and piles up in the bottom of basin. The discharge piping (6a) that is provided with immersible pump (2) and is connected with the discharge port of this pump in the inside of basin (1) among this drain pump device, sunction inlet (2a) position on every side in encirclement immersible pump (2) of the bottom of basin (1), with vortex -like suddenly the distance of strip portion (5) and the sunction inlet (2a) of immersible pump (2) dispose vortex -like suddenly strip (5) from the mode that the sunction inlet (2a) of periphery side towards immersible pump (2) of the bottom of basin (1) reduces gradually.
Description
Technical field
This utility model relate to being configured to being provided with in the tanks such as sewage drainage groove immersible pump and
The draining pump device discharging pipe arrangement being connected with the outlet of this immersible pump, particularly relates to pile up
Foreign body in the bottom of sewage drainage groove is discharged efficiently outside tank, is suitable to prevent foreign body from causing
The draining pump device of stench.
Background technology
Such as flow down the suitable of piping system in the source that produced by sewage with the sewage of lower Large Water Treatment Field link
In the sewage drainage grooves such as the inspection shaft when position configuration, it is provided with for by the dirt in sewage drainage groove
The draining pump device that water is discharged to outside.In this draining pump device, it is desirable to become stench
The foreign body of reason is not detained and is piled up in the bottom of sewage drainage groove, and in making sewage drainage groove
Sewage is discharged to outside.
In the past, in response to such requirement and following draining pump device is proposed, it may be assumed that at sewage
The bottom of rhone such as arranges the circinate recess producing rotating flow, and so that extends downwards
The suction inlet of prominent sucting is positioned at the mode of this recess and arranges immersible pump, along with this immersible pump
Operating, make sewage in sewage drainage groove produce and suck rotating flow by sewage drainage
Sewage in groove is discharged, and along with this rotating flow, the foreign body in sewage drainage groove is also discharged (example
As, with reference to patent documentation 1 and patent documentation 2).
Patent documentation 1: Japanese Unexamined Patent Publication 2004-52396 publication
Patent documentation 2: Japanese Unexamined Patent Publication 9-209992 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2009-281348 publication
In above-mentioned existing draining pump device, in order to along with the operating of immersible pump, make sewage drainage
The bottom of groove produces rotating flow, needs to form circinate recess bottom this.Here, will be formed
Circinate recess in the bottom of sewage drainage groove is formed as the rotating flow being suitable to produce sewage etc.
Special shape, along with the operating of immersible pump, sewage etc. is equal from the complete cycle of diving pump intake
Flow into evenly, thus reduce the generation of the rotating flow caused by the suction of sewage etc., thus need to prevent
Only cannot be effectively discharged out being detained and being piled up in the situation of the foreign body of the periphery, bottom of tank.
The structure that accordingly, there exist not only draining pump device becomes complicated, manufactures also difficulty, and makes
Expensive problem is become as expense.If it addition, forming the whirlpool for producing rotating flow at bottom of gullet
Vortex-like recess, then there is also tank bottom surface and be formed as concavo-convex, the bad stability when construction,
The problem that construction becomes difficulty.
Utility model content
This utility model is made in view of the above problems, it is therefore intended that provide following draining pump
Device, it may be assumed that with fairly simple structure, suck sewage along with the operating of immersible pump from suction inlet
Deng, making bottom of gullet produce stable circinate rotation and suck stream, foreign body is inhaled also with this rotation
Become a mandarin and effectively outside tank discharge so that the foreign body becoming the reason of stench is not detained and
It is piled up in the bottom of tank.
In order to solve above-mentioned problem, draining pump device of the present utility model is configured to inside tank set
Put immersible pump and the discharge pipe arrangement being connected with the outlet of this immersible pump, the spy of this draining pump device
Levying and be, described immersible pump is arranged in from sink center's eccentric position.
As it has been described above, by immersible pump is arranged in from sink center's eccentric position, thus become
Structure that rotating flow carry out suck is positively utilized, therefore, it is possible to obtain sewage dirt efficiently.
The preferred mode of this utility model is characterised by, described draining pump device is configured to bag
Including two immersible pumps, an immersible pump is made up of light thing discharge pump, and another immersible pump is by weight
Discharge pump is constituted, and described light thing discharge pump is arranged in the position leaning on central side than weight discharge pump
Put.
A preferred mode of the present utility model is characterised by, described in the encirclement of bottom of gullet
The position of the surrounding of diving pump intake, is configured that swirling projecting strip part and makes this swirling dash forward
The distance of bar portion and described diving pump intake from the outer circumferential side of described bottom of gullet towards described
Diving pump intake is gradually reduced.
As it has been described above, in the position surrounded around diving pump intake of bottom of gullet, by whirlpool
Shape projecting strip part is configured that and makes this swirling projecting strip part distance with diving pump intake from the bottom of tank
The outer circumferential side in portion is gradually reduced, if thus making immersible pump operate, from suction towards diving pump intake
Entrance sucks the sewage etc. in tank, then produce stable circinate suction along swirling projecting strip part
Entering rotating flow, the foreign body of the reason becoming stench is discharged outside tank along with this suction rotating flow.
A preferred mode of the present utility model is characterised by, in above-mentioned draining pump device,
Described bottom of gullet is formed as a part at least outer circumferential side and raises towards outer circumference end, and is configured to
This outer circumference end position becomes the height identical with the top of described swirling projecting strip part.
A preferred mode of the present utility model is characterised by, in above-mentioned draining pump device,
The described swirling projecting strip part height away from described bottom of gullet is set to: make the suction of described immersible pump
Entrance is higher than the outer circumferential side of this bottom of gullet.
A preferred mode of the present utility model is characterised by, in above-mentioned draining pump device,
Described swirling projecting strip part is shaped to the swirling of regulation in advance and is installed on described bottom of gullet, or
Person is molded as one with described bottom of gullet.
A preferred mode of the present utility model is characterised by, in above-mentioned draining pump device,
Described bottom of gullet is divided into via border: the Pump Suction Nozzle side bottom of Pump Suction Nozzle side and
It is set as entering the discharge pipe arrangement side bottom discharging pipe arrangement side that side bottom is high, described discharge than this pumping
Pipe arrangement side bottom is set to along with gradually rising from boundary separation.
According to this utility model, in the position surrounded around diving pump intake of bottom of gullet,
Swirling projecting strip part is configured that make this swirling projecting strip part with diving pump intake distance from
The outer circumferential side of bottom of gullet is gradually reduced, if thus making immersible pump transport towards diving pump intake
Turn, then produce stable circinate suction rotating flow along swirling projecting strip part, along with this suction
Rotating flow, foreign body is inhaled into diving pump intake and discharges outside tank.Therefore stench is become
The foreign body of reason be not detained, be piled up in bottom of gullet.And, the whirlpool of regulation will be shaped in advance
Vortex-like swirling projecting strip part is installed on bottom of gullet, or at bottom of gullet by swirling projecting strip part
It is molded as one with this bottom of gullet such that it is able to configure swirling projecting strip part at bottom of gullet, by
This, relatively simple for structure, and low cost, construction also becomes easy.Particularly at bottom of gullet
Workability is improved further in the indoor drainage of flat pattern.
Accompanying drawing explanation
Fig. 1 (a), Fig. 1 (b) are the draining pump devices representing embodiment of the present utility model
The sectional elevation of structure.
Fig. 2 is that the vertical profile of the structure of the draining pump device representing embodiment of the present utility model regards
Figure.
Fig. 3 is the sectional elevation of the structure of the draining pump device representing existing embodiment.
Fig. 4 be the sewage drainage groove representing the draining pump device shown in Fig. 2 and Fig. 3 bottom with
The top view of the planar arrangement feature of swirling projecting strip part.
Fig. 5 is the A-A direction view of Fig. 4.
Fig. 6 is the sectional elevation of the draining pump device of other embodiments of the present utility model.
Fig. 7 is the longitudinal section of the draining pump device of other embodiments of the present utility model.
Description of reference numerals: 1 ... sewage drainage groove；2 ... immersible pump；2a ... Pump Suction Nozzle；3 ... pump
Installation base；4 ... pump installation attaching/detaching apparatus；5 ... swirling projecting strip part；6a, 6b ... discharge and join
Pipe；7 ... check-valves；8 ... guiding tube；9 ... suspention chain；10 ... discharge pipe arrangement side bottom；11…
Pump Suction Nozzle side bottom；12 ... border；13 ... inflow entrance.
Detailed description of the invention
Hereinafter, based on accompanying drawing, embodiment of the present utility model is illustrated.It addition, following
Embodiment in, parts identically or comparably are marked identical reference, and omit weight
Multiple explanation.
Fig. 1 (a), Fig. 1 (b) and Fig. 2 are the drainings representing embodiment of the present utility model
The figure of the structure of pump installation, Fig. 1 (a), Fig. 1 (b) are sectional elevations, and Fig. 2 is longitudinal section.
As shown in Fig. 1 (a), Fig. 1 (b) and Fig. 2, the draining pump device of this example is such as applied to
The sewage that sewage produces source and the link of lower Large Water Treatment Field flows down the appropriate location setting of piping system
Sewage drainage groove 1.It is provided with for arranging immersible pump 2 in the bottom of this sewage drainage groove 1
Pump is installed with base 3, in this pump installation with base 3 via pump installation attaching/detaching apparatus 4, and will be latent
Water pump 2 by its suction inlet 2a downward in the way of arrange.It is provided with two divings in this embodiment
Pump 2, they can alternately operate.
The lower end discharging pipe arrangement 6a is connected to extend along the horizontal direction of above-mentioned each immersible pump 2
Outlet, this discharge pipe arrangement 6a extends above to vertical direction.And this discharge pipe arrangement 6a with
Arrive the shared discharge pipe arrangement 6b connection of the top perisporium of sewage drainage groove 1.According to such knot
Structure, the sewage in the sewage drainage groove 1 that suction inlet 2a sucks by the operating of immersible pump 2,
By discharging pipe arrangement 6a, 6b outside discharge to sewage drainage groove 1.
It is respectively arranged with check-valves 7 at each discharge pipe arrangement 6a, is prevented from when immersible pump 2 stops
Sewage is from outer discharge tube side adverse current.Although it addition, omit diagram, but setting discharging pipe arrangement 6a
Be equipped with air bleeding valve, for make to lodge in when immersible pump 2 starts running be positioned at more top than check-valves 7
The air waited in the discharge pipe arrangement 6a of the position of trip side (immersible pump 2 side), to this discharge pipe arrangement
The outside of 6a sheds.
At the top of immersible pump 2, suspention chain 9 is installed, sets at pump installation attaching/detaching apparatus 4
It is equipped with vertically extending guiding tube 8.Thus by immersible pump 2 via suspention chain 9
And under the state suspended in midair, make guiding tube 8 move up and down as guiding piece such that it is able to by immersible pump
The position of 2 regulations being arranged at sewage drainage groove 1.
As shown in Fig. 1 (a), Fig. 1 (b), in the bottom of sewage drainage groove 1, each immersible pump 2
It is configured at rhone 1.Fig. 1 (a) configures relative to the center deviation heart of rhone 1.And,
Fig. 1 (b) in addition to bias, relative to center will configuration place specifically for " inner side configuration ",
" outside configuration ".Though it is specific to carry out this, but come by the combination of the pump for each immersible pump 2
Determine.Swept-back wing impeller or unshrouded impeller (band cutter) it are shown with possessing in the present embodiment
Pump and the example of swirl type pump.In the combination of both pumps, possess swept-back wing impeller or open type leaf
The pump of wheel (band cutter) is suitable to light thing and discharges, and swirl type pump is suitable to weight and discharges.If it may thus be appreciated that producing
Raw rotating flow, then the light thing that the density of fiber etc is little to center flow, the weight such as dirt, sand to
Outside flowing, therefore enters according to each liquid, the dirt of mixing, the size of rotation, direction
The configuration of row pump.
It addition, as shown in Fig. 3 of prior art, in the bottom of sewage drainage groove 1, additionally it is possible to
The structural grouping of swirling projecting strip part 5 it is each configured with in the position surrounded around each immersible pump 2.
Fig. 4 is bowing of the bottom representing sewage drainage groove 1 planar arrangement feature with swirling projecting strip part 5
View, Fig. 5 is the A-A direction view of Fig. 4.As shown in Figure 4, by two immersible pumps 2,2
The center O of suction inlet 2a, 2a1、O2Respectively as whirlpool center, extend with hyperbola swirling
Two swirling projecting strip parts 5,5 be configured at the bottom of sewage drainage groove 1.That is, from a side's
The center O of the suction inlet 2a of immersible pump 21Swirling to the side surrounded around this immersible pump 2
Distance L of projecting strip part 5 is set to: from the bottom outer circumferential side of the bottom of sewage drainage groove 1 towards
The suction inlet 2a of this immersible pump 2 is gradually reduced.Equally, from the suction of the immersible pump 2 of the opposing party
The center O of mouth 2a2The distance of swirling projecting strip part 5 to the opposing party is set to: from sewage
The bottom outer circumferential side of the bottom of rhone 1 is gradually reduced towards the suction inlet 2a of this immersible pump 2.
As it is shown in figure 5, the central part region 1a of the bottom surface of sewage drainage groove 1 is formed as flat condition
(level), its peripheral part region 1b is formed as the inclined plane that outside is high, inner side is low.And, whirlpool
The top whole height of vortex-like projecting strip part 5 is identical, and is formed as outside the bottom surface of sewage drainage groove 1
The height of the outer circumference end position of perimeter regions 1b is identical with the top of swirling projecting strip part 5.Whirlpool
The height H of the shape projecting strip part 5 bottom surface away from sewage drainage groove 1 is set to: in above-mentioned peripheral part district
Territory 1b is gradually lowered towards outside, in the central part region residing for the suction inlet 2a of immersible pump 2
1a is higher.
Fig. 6 and Fig. 7 represents the draining pump device of other embodiments of the present utility model.This figure
Draining pump device shown in 6 and Fig. 7 and the draining pump device shown in aforesaid Fig. 2 and Fig. 3
Difference as follows.
That is, the bottom of sewage drainage groove 1 is diametrically prolonged by by the approximate centre bottom this
The border 12 stretched is divided into: is positioned at and discharges the discharge pipe arrangement side bottom 10 of pipe arrangement 6a side and be positioned at
Bottom the Pump Suction Nozzle of Pump Suction Nozzle 2a side 11, and it is set to discharge pipe arrangement side bottom 10 and is higher than
Suction inlet side bottom 11.And, the suction inlet 2a of each immersible pump 2 is positioned at the pumping of low single order and enters
Bottom Kou 11, and towards horizontal direction opening, surrounding bottom Pump Suction Nozzle with Double curve screw shape
Position around the suction inlet 2a of each immersible pump 2 of 11, is configured with swirling projecting strip part 5.Separately
Outward, this Pump Suction Nozzle 2a can also be formed as nozzle-like, and stretches downwards.
Additionally, as it is shown in fig. 7, discharge what pipe arrangement side bottom 10 was set to contact with border 12
Part is minimum, separates the par of Rack, gradually rises along with separating from border 12.
In Fig. 5 and Fig. 6, illustrate sewage of sening as an envoy to flow into the inflow entrance 13 in sewage drainage groove 1.
Swirling projecting strip part 5 in the draining pump device of the respective embodiments described above, is arranged as long as utilizing
The installation units such as the anchor bolt in the bottom surface of sewage drainage groove 1 whirlpool to being shaped to regulation in advance
The swirling projecting strip part 5 of shape is installed, it becomes possible to install simply.Can also utilize viscous
Connect agent etc. and swirling projecting strip part 5 is adhered to the bottom surface of sewage drainage groove 1.It addition, such as in dirt
In the case of the bottom of water rhone 1 is fiber-reinforced plastic system, will can become in advance with bonding agent
Type is the bottom surface that the circinate swirling projecting strip part 5 specified is adhered to sewage drainage groove 1, or will
Swirling projecting strip part 5 forms as one with the bottom of sewage drainage groove 1.Even if additionally, at sewage
In the case of rhone 1 is concrete system, it is also possible to by swirling projecting strip part 5 and sewage drainage groove
1 is molded as one.
It addition, in the bottom making sewage drainage groove 1 of fiber-reinforced plastic, by this fibre strengthening
In the case of plastic bottom adds the cylindrical portion of the sewage drainage groove 1 being arranged at concrete,
The bottom of swirling projecting strip part 5 with this fiber-reinforced plastic can also be made as one.
The draining pump device of each embodiment described above is such, in the bottom of sewage drainage groove 1
Centered by the suction inlet 2a of each immersible pump 2, surround the position around this suction inlet 2a, configure with
The swirling projecting strip part 5 that hyperbola swirling extends, if thus making immersible pump 2 operate, from its suction
Entrance 2a sucks the sewage in sewage drainage groove 1, then the bottom of sewage drainage groove 1 produce along
Swirling projecting strip part 5 swirling ground and be inhaled into the suction inlet 2a of immersible pump 2 at whirlpool central part
Suction eddy-currents.The whirlpool that this suction eddy-currents is formed owing to being guided by swirling projecting strip part 5
Eddy current, so becoming stable eddy-currents.Therefore, foreign body etc. also take advantage of this eddy-currents and from diving
The suction inlet 2a of pump 2 is inhaled in immersible pump 2 successively, and to the outside of sewage drainage groove 1
Discharge.Therefore the foreign body etc. becoming the reason producing stench will not be detained, be piled up in sewage drainage groove
The bottom of 1.
As it has been described above, according to draining pump device of the present utility model, only swirling projecting strip part 5 is set
Be placed in the bottom of sewage drainage groove 1, therefore with as existing draining pump device, in dirt
The bottom of water rhone 1 arranges the situation of the circinate recess producing rotating flow and compares, it is possible to
Simple structure produces stable eddy-currents.Therefore, it is possible to offer becomes the reason of stench at a low price
Foreign body will not be detained, be piled up in the sewage drainage pump installation of the bottom of sewage drainage groove.
Above, embodiment of the present utility model is illustrated, but this utility model does not limit
Due to above-mentioned embodiment, think with the technology described in accompanying drawing at claims and description
Various deformation can be carried out in the range of thinking.Even if it addition, be the most directly recorded in description and
Some shape in accompanying drawing, structure, material, if playing the effect of the application utility model, effect
Really, then it is also in the range of technological thought of the present utility model.
Such as, in the above-described embodiment, it is shown that two immersible pumps are set in sewage drainage groove 1
And constitute the example of draining pump device, but the number of units of immersible pump can be one, it is also possible to is three
Above.The most in the above-described embodiments, to sewage being produced the dirt that source links with lower Large Water Treatment Field
The example of the sewage drainage groove application draining pump device that the appropriate location of water piping system is arranged is carried out
Explanation but it also may at the arbitrarily tank application draining pump device such as indoor drainage groove.Indoor row
In the case of tank, owing to bottom of gullet is close to flat shape, improve construction the most further
Performance.
Claims (7)
1. a draining pump device, be configured to inside tank to arrange immersible pump and with this diving
The discharge pipe arrangement that the outlet of pump connects, this draining pump device is characterised by,
Described immersible pump is arranged in from sink center's eccentric position.
Draining pump device the most according to claim 1, it is characterised in that
Described draining pump device is configured to include two immersible pumps,
One immersible pump is made up of light thing discharge pump, and another immersible pump is by weight discharge pump structure
Become,
Described light thing discharge pump is arranged in the position leaning on central side than weight discharge pump.
Draining pump device the most according to claim 1, it is characterised in that
In the position surrounded around described diving pump intake of bottom of gullet, swirling is dashed forward
Bar portion is configured that and makes this swirling projecting strip part distance with described diving pump intake from described water
The outer circumferential side of trench bottom is gradually reduced towards described diving pump intake.
Draining pump device the most according to claim 3, it is characterised in that
Described bottom of gullet is formed as a part at least outer circumferential side and raises towards outer circumference end, and constitutes
For becoming the height identical with the top of described swirling projecting strip part in this outer circumference end position.
Draining pump device the most according to claim 3, it is characterised in that
Described swirling projecting strip part is set to apart from the height of described bottom of gullet: make described diving
Higher than the outer circumferential side of this bottom of gullet near pump intake.
6. according to the draining pump device described in any one in claim 3～5, it is characterised in that
Described swirling projecting strip part is shaped to the swirling of regulation in advance and is installed at the bottom of described tank
Portion, or be molded as one with described bottom of gullet.
7. according to the draining pump device described in any one in claim 3～5, it is characterised in that
Described bottom of gullet is divided into via border: at the bottom of the Pump Suction Nozzle side of Pump Suction Nozzle side
Portion and be set as than this pumping enter side bottom high discharge pipe arrangement side discharge pipe arrangement side bottom,
Described discharge pipe arrangement side bottom is set to along with gradually rising from boundary separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620176283.XU CN205530649U (en) | 2016-03-08 | 2016-03-08 | Drain pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620176283.XU CN205530649U (en) | 2016-03-08 | 2016-03-08 | Drain pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205530649U true CN205530649U (en) | 2016-08-31 |
Family
ID=56781192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620176283.XU Expired - Fee Related CN205530649U (en) | 2016-03-08 | 2016-03-08 | Drain pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205530649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160407A (en) * | 2020-10-23 | 2021-01-01 | 同济大学 | Novel urban waterlogging prevention and drainage mechanical power device |
-
2016
- 2016-03-08 CN CN201620176283.XU patent/CN205530649U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160407A (en) * | 2020-10-23 | 2021-01-01 | 同济大学 | Novel urban waterlogging prevention and drainage mechanical power device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20190308 |