CN108661917B - High-efficiency energy-saving self-priming centrifugal pump - Google Patents
High-efficiency energy-saving self-priming centrifugal pump Download PDFInfo
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- CN108661917B CN108661917B CN201810775505.3A CN201810775505A CN108661917B CN 108661917 B CN108661917 B CN 108661917B CN 201810775505 A CN201810775505 A CN 201810775505A CN 108661917 B CN108661917 B CN 108661917B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 230000007704 transition Effects 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 230000037452 priming Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 description 27
- 230000008859 change Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a high-efficiency energy-saving self-priming centrifugal pump, which comprises a water inlet pipe, a water storage chamber and an impeller, wherein the water storage chamber is internally provided with a water suction chamber, and the water suction chamber is formed by enclosing an upper bottom plate, a lower bottom plate and side plates which are mutually perpendicular to the upper bottom plate and the lower bottom plate; the hole h of the upper bottom plate extends upwards along the hole wall to form a water outlet pipe, the water outlet pipe is connected with the impeller inlet, the edge line of the cross section of the side plate is formed by sequentially connecting a curve a, a spiral line b, a curve c and a line d, the line a, the line c and the line b are in smooth transition, a hole k is formed in the side plate where the line d is positioned, and the hole k is connected with the water inlet pipe; the intersection points m and n of the line b and the line a and the line c, m and n and the circle center o of the hole h are positioned on the same straight line, the length of a line segment between a point on the spiral line b and o is taken as R, the included angle between the line segment between the point on the spiral line b and o and the line segment between m and o is taken as theta, and R=D 0 (A+Bθ/C). The self-priming centrifugal pump provided by the invention has the advantages of efficiency, self-priming performance, hydraulic performance and operation reliability, and can be popularized and used.
Description
Technical Field
The invention belongs to the field of centrifugal pumps, and relates to a high-efficiency energy-saving self-priming centrifugal pump.
Background
The self-priming pump is a centrifugal pump with a special structure, and can be started directly after the priming is started for the first time, so that the self-priming pump has the advantages of convenience in use, reliability in work and convenience in remote centralized control, is particularly suitable for occasions where the priming is frequently installed and started, and has the defect of low efficiency. The existing self-priming pump is divided into an internal mixing type and an external mixing type, wherein the internal mixing type is a self-priming pump with liquid flow flowing back to an impeller inlet, the self-priming pump with the structure has relatively high efficiency, the external mixing type is a self-priming pump with liquid flow flowing back to an impeller outlet, the efficiency is relatively low, but the self-priming time is relatively short, and the efficiency of the self-priming pump is relatively low compared with that of a general centrifugal pump regardless of the external mixing type or the internal mixing type.
In the existing self-priming pump, for the occasion that the installation height is higher than the water absorption liquid level, the following structures are generally adopted:
(1) The self-priming pump has the advantages of reliable operation, less maintenance times and low efficiency, because the structure and the reflux quantity of the gas-water separation chamber determine the product performance no matter in an internal mixing mode or an external mixing mode, the larger reflux quantity is generally designed and taken for ensuring the self-priming performance and the self-priming time of the product, so that the pump volume rate is low, the internal speed of the impeller cannot be effectively converted into pressure energy due to the structure of the gas-water separation chamber, the impact, abrupt diffusion or shrinkage loss is caused, the pump efficiency is lower, the actual operation efficiency of the self-priming pump on site is not more than 50 percent, great energy consumption waste is caused, the national energy-saving and environment-friendly requirements are not met, the self-priming pump impeller cannot be cut, the flow pressure is constant after each pump is designed, the gap between the impeller and a pump body cut is increased, and the gas-water mixture cannot be rapidly discharged, so that the pump performance is influenced;
(2) The long-shaft deep-well pump adopts a space guide vane structure, so that the efficiency is relatively high, but the failure rate is also high, and the pump structure is difficult to hoist and is complex to maintain;
(3) The centrifugal pump is provided with a vacuum pump, a bottom valve or a vacuum water diversion device, and the vacuum pump is provided with the vacuum pump, so that the problem of low efficiency is solved, but the vacuum pump needs to be vacuumized every time the centrifugal pump is started, the operation is more complicated, the failure rate of the two pumps is higher, particularly in the liquid flow with impurities, the sealing of the common centrifugal pump is highly required, and the normal water absorption can not be realized if the air leakage is slightly caused; the bottom valve and the vacuum water diversion device have larger hydraulic loss, so that the operation efficiency of the pump is reduced, and the pump cannot be used in occasions with larger suction heights and cannot be applied to mediums containing impurities.
Although the device with the structure has certain advantages, the efficiency, the self-priming performance, the hydraulic performance and the operation reliability cannot be realized.
Therefore, the development of the self-priming centrifugal pump which has the advantages of efficiency, self-priming performance, hydraulic performance and operation reliability has great practical significance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a self-priming centrifugal pump which has the advantages of efficiency, self-priming performance, hydraulic performance and operation reliability. The full-runner hydraulic design is carried out aiming at the conditions so as to obtain the efficient energy-saving self-priming centrifugal pump.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the high-efficiency energy-saving self-priming centrifugal pump comprises a water inlet pipe, a water storage chamber and an impeller, wherein the water storage chamber is internally provided with a water suction chamber which is of a hollow structure and is surrounded by an upper bottom plate, a lower bottom plate and side plates mutually perpendicular to the upper bottom plate and the lower bottom plate, the bottom of the water suction chamber is provided with a through hole, and liquid in the water storage chamber enters the water suction chamber through the through hole;
the upper bottom plate is provided with a hole h and extends upwards along the hole wall to form a water outlet pipe, the water outlet pipe is connected with an impeller inlet, the edge line of the cross section of the side plate is comma-shaped and is formed by sequentially connecting a curve a, a spiral line b, a curve c and a line d, the curve a and the curve c are smooth curves and are in smooth transition with the spiral line b, the side plate where the line d is positioned is provided with a hole k, and the hole k is connected with the water inlet pipe; the shape of the water absorbing chamber is mainly related to the shape of the side plate, and the edge lines of the upper bottom plate and the lower bottom plate can be the same as or different from the edge line of the cross section of the side plate;
the intersection point of the spiral line b and the curves a and c is m and n respectively, the centers o of the m, n and the hole h are positioned on the same straight line, the distance between m and o is smaller than the distance between n and o, the length of a line segment between a point on the spiral line b and o is R, the included angle between the line segment between the point on the spiral line b and o and the line segment between m and o is theta, and R=D 0 (A+Bθ/C)，D 0 For the impeller inlet diameter, a=0.6-0.7, b=0.06-0.1, c=1, the curve has no fixed equation, the flow cross-section area is determined according to each pump flow, lift and rotation speed, the width and radial height can be randomly selected, the radial height is generally taken firstly, then the width is determined according to the flow cross-section area, and the relation between the flow cross-section area and the pump flow and the cross-section flow velocity is as follows:
S＝Q/v s ；
wherein S is the area of the flow cross section, and the unit is m 2 Q is pump flow, unit is m 3 /s，v s The flow velocity of the flow cross section is m/s, and (v 0 +v 1 )/2，v 0 For pump inlet flow velocity, v 1 Is the impeller inlet flow rate.
The existing self-priming pump structure has no water suction chamber, only the water storage chamber, the structure is a circular cylinder, liquid flow is suddenly diffused into the cylinder from the water suction tank through the inlet elbow, the liquid flow speed is suddenly reduced, the flow speed is suddenly increased at the impeller suction inlet, the flow speed of the liquid storage chamber is basically zero, the whole hydraulic water flow section is suddenly amplified and then suddenly contracted, the flow speed vector magnitude realizes the mutation process, and the flow direction is irregularly arranged, so that the loss of the inlet section of the pump is increased, the integral operation efficiency of the pump is influenced, the weakening effect on the cavitation resistance is also realized, and the maximum self-priming height of the pump is reduced. According to the self-priming pump water suction chamber, the water suction chamber is added in the water storage chamber, and after the self-priming pump water suction chamber is designed into a semi-spiral structure, the uniform change of the whole flow cross section area is ensured, so that the uniform change of the flow speed from small to large is ensured, the uniform change of the flow direction is realized, the local diffusion and impact loss of the liquid flow are effectively reduced, the pump operation efficiency is improved, the cavitation resistance allowance of the pump is increased, and the maximum suction height of the pump is further improved, and the maximum suction height of the high-efficiency energy-saving self-priming centrifugal pump can reach 0.5-1.0 m.
The invention has the advantages that the overall efficiency of the high-efficiency energy-saving self-priming centrifugal pump is 72-83%, and the overall efficiency of a common self-priming centrifugal pump is 50-65%, and the overall efficiency of the self-priming centrifugal pump is remarkably improved by arranging the water absorbing chamber with a specific structure in the water storage chamber.
As a preferable technical scheme:
the efficient energy-saving self-priming centrifugal pump is characterized in that the water absorption chamber is internally provided with the water diversion plate with the V-shaped cross section, the height of the water diversion plate is the same as that of the water absorption chamber, and the water diversion plate is in smooth transition connection with the side plate where the spiral line b is located and the side plate where the curve a is located. The liquid flow is roughly divided into two after entering the water suction chamber, one flow flows along the side plate where the curve c and the spiral line b are located, the other flow flows along the side plate where the curve a is located, and the boundary of the side plate where the spiral line b is located and the side plate where the curve a is located is impacted to form a vortex, so that the efficiency of the self-priming centrifugal pump is influenced, the liquid flow impact can be effectively prevented after the water diversion plate is arranged, and the efficiency is improved.
The wall thickness of the water diversion plate is the same as that of the side plate, the same wall thickness is adopted, the cooling speed of castings is the same, casting defects are not easy to occur, welding deformation of welding parts can be reduced, and meanwhile, the strength requirement can be guaranteed.
The efficient energy-saving self-priming centrifugal pump is characterized in that the water storage chamber is of a cylindrical structure and is welded with the water suction chamber and the water inlet pipe. The size of the water storage chamber is designed according to the working condition of the pump.
The line d is an arc line, and the side plate where the line d is positioned is the side wall of the water storage chamber.
As described above, the radius of curvature of the curve a is smaller than the curve c, the side plate where the curve a is located is equal to the selected inner ring, the side plate where the curve c is located is equal to the rotating outer ring, and the radius of curvature of the curve a is smaller than the curve c, which is more beneficial to meeting the requirement of constant-speed movement.
The water inlet pipe of the efficient energy-saving self-priming centrifugal pump is an elbow pipe, and the cross sectional area of each position of the water inlet pipe is the same and is equal to the cross sectional area of the hole k.
As the inner diameter of the water outlet pipe is larger than or equal to the diameter of the inlet of the impeller, the flow rate from the water outlet pipe to the inlet of the impeller is slowly changed and cannot be suddenly changed, so that hydraulic loss is reduced, the flow rate of the water outlet pipe is slightly larger than the diameter of the inlet of the impeller, the flow rate of the water outlet pipe can be smaller than the flow rate of the inlet of the impeller, the flow rate is small and the corresponding pressure energy is large, so that liquid flow vaporization can be reduced, and the cavitation resistance of the pump is improved.
The hole h and the hole k are round holes or square holes. The shapes of the holes h and k are not limited thereto, and may be adjusted according to actual use conditions.
The through holes are positioned on the lower bottom plate and can be arranged on the side plate close to the lower bottom plate, so long as water in the water storage chamber is facilitated to enter the water absorption chamber.
The mechanism of the invention is as follows:
the invention relates to a self-priming pump, in particular to a self-priming pump, which mainly plays a role in guiding the liquid flow at the inlet of the impeller to ensure that the liquid flow does not impact the impeller, so that the liquid flow entering the impeller is led and drained, the flow speed of the liquid flow cannot be suddenly changed on each flow-through section, and the flow direction cannot be suddenly changed, because the process of shrinking after suddenly enlarging is accompanied by energy loss, also called hydraulic local loss, the hydraulic local loss is large, the pressure of the liquid flow entering the impeller is low, when the pressure of the liquid flow is lower than the vaporization pressure, the impeller can cavitation, the pressure of the pump outlet is reduced, and the pump efficiency is reduced.
The hydraulic loss calculation formula is as follows:
h＝ζv s ^2/(2g)；
wherein h represents the loss pressure in m; ζ is the loss coefficient, is a constant, and is related to the change of the cross-sectional area and the velocity direction, the larger the change, the larger the loss coefficient, v s The flow section flow velocity is expressed as m/s, g is the gravity acceleration, and the unit is m/s 2 "≡" indicates square. From the above equation, it is seen that the total hydraulic loss is directly related to the loss coefficient and flow rate, and that to increase pump efficiency, the values of both must be reduced.
The outdoor profile bus of the water absorption chamber is divided into 2 sections in the 360 DEG direction, only 180 DEG adopts a spiral line structure, and the inlet flow velocity of the impeller is assumed to be v 0 That is on a 180 DEG section, the flow rate is (1/2) v 0 The height of the water absorbing chamber is fixed, the radial size of the cross section of 180 degrees can be determined, meanwhile, for the 0-degree cross section area being 0, no liquid flow flows through, and the flow velocity of each cross section of 0-180 degrees is the same as (1/2) v 0 Through the uniform change of the angle, the area of the cross section of the overcurrent is uniformly changed according to the different angles, the height of the water absorbing chamber is unchanged, and the uniform change of the radial dimension is realized. The inlet of the impeller is divided into 360 degrees in the circumferential direction, the water inflow at each angle is uniform, the liquid flow moves along the wall surface spiral line in the water absorbing chamber, wherein 180 degrees adopts a spiral line structure, the flow rate of the liquid flow flowing through the 180 degrees cross section is uniformly distributed on the 0-180 degrees cross section, and the 180 degrees cross section area is defined as s 8 The angle is equally divided into 8 parts, each part is 22.5 degrees, and the cross section area is s 1 、s 2 ……s 8 ；s 1 ＝1/8s 8 ；s 2 ＝2/8s 8 … …, and so on; the flow of each section is also analogized, so that the flow velocity of each section is ensured to be equal, and the flow of liquid is guided due to the small curvature radius in the spiral line structure, so that a flow vortex is not easy to form, the uniform change of the flow direction of the liquid in the section is ensured, and meanwhile, the flow of the liquid has no hydraulic impact, so that the hydraulic efficiency is high, and the overall efficiency of the pump is improved.
The beneficial effects are that:
(1) The high-efficiency energy-saving self-priming centrifugal pump adopts a full-runner hydraulic design, has high operation efficiency, saves energy and reduces consumption;
(2) The high-efficiency energy-saving self-priming centrifugal pump has the advantages of good self-priming performance, short self-priming time and high self-priming height;
(3) The high-efficiency energy-saving self-priming centrifugal pump disclosed by the invention has the advantages of efficiency, self-priming performance, hydraulic performance and operation reliability, and has a great application prospect;
(4) The high-efficiency energy-saving self-priming centrifugal pump is arranged on the ground, has a wide application range and is convenient to overhaul and maintain;
(5) The efficient energy-saving self-priming centrifugal pump provided by the invention only needs to start the water filling for the first time, and then does not need the water filling, so that the operation is simple.
Drawings
Fig. 1 is a schematic diagram of the liquid storage chamber and the water absorbing chamber of the high-efficiency energy-saving self-priming centrifugal pump.
FIG. 2 is a front view of the liquid storage chamber and the water intake chamber of the high efficiency energy saving self priming centrifugal pump of the present invention;
FIG. 3 is a cross-sectional view of a liquid storage chamber and a water suction chamber of the high efficiency energy saving self priming centrifugal pump of the present invention;
wherein 1 is the inlet tube, 2 is the reservoir chamber, 3 is the water sucking chamber, 4 is the outlet pipe, 5 is the water dividing plate.
Detailed Description
The invention is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
The efficient energy-saving self-priming centrifugal pump comprises a water inlet pipe 1, a water storage chamber 2 and an impeller, wherein the water storage chamber 2 is internally provided with a water suction chamber 3 as shown in figures 1 and 2, the water suction chamber 3 is of a hollow structure and is formed by an upper bottom plate, a lower bottom plate and side plates mutually perpendicular to the upper bottom plate and the lower bottom plate, and a through hole is formed in the bottom of the lower bottom plate of the water suction chamber. The upper bottom plate is provided with a hole h and extends upwards along the hole wall to form a water outlet pipe 4, the water outlet pipe 4 is connected with the impeller inlet, and the inner diameter of the water outlet pipe 4 is larger than or equal to the diameter of the impeller inlet. The edge line of the cross section of the side plate is comma-shaped, as shown in fig. 3, and is formed by sequentially connecting a curve a, a spiral line b, a curve c and a line d, wherein the curve a and the curve c are smooth curves and are in smooth transition with the spiral line b, the curvature radius of the curve a is smaller than that of the curve c, a hole k is formed in the side plate where the line d is located, the hole k is connected with a water inlet pipe, the water inlet pipe is an elbow, and the cross section areas of all positions of the water inlet pipe are the same and are equal to the cross section area of the hole k. The holes h and k are round holes or square holes, the line d is an arc line, and the side plate where the line d is positioned is the side wall of the water storage chamber 2.
The intersection point of the spiral line b and the curves a and c is m and n respectively, the centers o of the m, n and the hole h are positioned on the same straight line, the distance between m and o is smaller than the distance between n and o, the length of a line segment between a point on the spiral line b and o is R, the included angle between the line segment between the point on the spiral line b and o and the line segment between m and o is theta, and R=D 0 (A+Bθ/C)，D 0 For impeller inlet diameter, a=0.6 to 0.7, b=0.06 to 0.1, c=1 °.
The water absorption chamber 3 is internally provided with a water diversion plate 5 with a V-shaped cross section, the height of the water diversion plate 5 is the same as that of the water absorption chamber, the wall thickness of the water diversion plate is the same as that of the side plate, and the water diversion plate 5 is in smooth transition connection with the side plate where the spiral line b is positioned and the side plate where the curve a is positioned respectively.
The water storage chamber 2 is of a cylindrical structure, and is welded with the water absorption chamber 3 and the water inlet pipe 1.
The efficiency of the high-efficiency energy-saving self-priming centrifugal pump is 72-83%.
Claims (8)
1. The utility model provides a high-efficient energy-conserving self-priming centrifugal pump, includes inlet tube, water storage room and impeller, characterized by: the water storage chamber is internally provided with a water suction chamber which is of a hollow structure and is surrounded by an upper bottom plate, a lower bottom plate and side plates mutually perpendicular to the upper bottom plate and the lower bottom plate, and the bottom of the water suction chamber is provided with a through hole;
the upper bottom plate is provided with a hole h and extends upwards along the hole wall to form a water outlet pipe, the water outlet pipe is connected with an impeller inlet, the edge line of the cross section of the side plate is comma-shaped and is formed by sequentially connecting a curve a, a spiral line b, a curve c and a line d, the curve a and the curve c are smooth curves and are in smooth transition with the spiral line b, the side plate where the line d is positioned is provided with a hole k, and the hole k is connected with the water inlet pipe; the radius of curvature of the curve a is smaller than that of the curve c; the inner diameter of the water outlet pipe is larger than or equal to the diameter of the inlet of the impeller;
the intersection point of the spiral line b and the curves a and c is m and n respectively, the centers o of the m, n and the hole h are positioned on the same straight line, the distance between m and o is smaller than the distance between n and o, the length of a line segment between a point on the spiral line b and o is R, the included angle between the line segment between the point on the spiral line b and o and the line segment between m and o is theta, and R=D 0 (A+Bθ/C)，D 0 For the impeller inlet diameter, a=0.6 to 0.7, b=0.06 to 0.1, c=1°;
the efficiency of the efficient energy-saving self-priming centrifugal pump is 72-83%.
2. The efficient energy-saving self-priming centrifugal pump according to claim 1, wherein a water diversion plate with a V-shaped cross section is arranged in the water absorption chamber, the height of the water diversion plate is the same as that of the water absorption chamber, and the water diversion plate is in smooth transition connection with a side plate where the spiral line b is located and a side plate where the curve a is located respectively.
3. A high efficiency energy saving self priming centrifugal pump according to claim 2, wherein the wall thickness of the water dividing plate is the same as the side plates.
4. The energy efficient self-priming centrifugal pump according to claim 1, wherein said water storage chamber is a cylindrical structure welded to the water intake chamber and the water inlet tube.
5. The efficient and energy-saving self-priming centrifugal pump according to claim 4, wherein said line d is an arc, and the side plate where the line d is located is a water storage chamber side wall.
6. The energy efficient self-priming centrifugal pump according to claim 1, wherein said inlet tube is an elbow tube having the same cross-sectional area at each location and equal to the cross-sectional area of the hole k.
7. A high efficiency energy saving self priming centrifugal pump according to claim 1, wherein said holes h and k are round or square holes.
8. A high efficiency, energy efficient self priming centrifugal pump according to claim 1, wherein said through holes are located on a lower base plate.
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|---|---|---|---|
| CN201810775505.3A CN108661917B (en) | 2018-07-16 | 2018-07-16 | High-efficiency energy-saving self-priming centrifugal pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810775505.3A CN108661917B (en) | 2018-07-16 | 2018-07-16 | High-efficiency energy-saving self-priming centrifugal pump |
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| CN108661917B true CN108661917B (en) | 2024-03-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010374A1 (en) * | 2003-07-30 | 2005-02-03 | Varisco Spa | Self-priming centrifugal pump |
| CN102966601A (en) * | 2012-12-11 | 2013-03-13 | 江苏大学 | Hydraulic design method of half-spiral water-sucking chamber for pump |
| CN107503948A (en) * | 2017-09-30 | 2017-12-22 | 江苏武新泵业有限公司 | A kind of inlet type double helix spiral case self priming pump with one heart |
| CN107965470A (en) * | 2017-05-08 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of centrifugal blower volute for range hood |
| CN208416964U (en) * | 2018-07-16 | 2019-01-22 | 上海瑞晨环保科技股份有限公司 | Energy-efficient self priming centrifugal pump |
-
2018
- 2018-07-16 CN CN201810775505.3A patent/CN108661917B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010374A1 (en) * | 2003-07-30 | 2005-02-03 | Varisco Spa | Self-priming centrifugal pump |
| CN102966601A (en) * | 2012-12-11 | 2013-03-13 | 江苏大学 | Hydraulic design method of half-spiral water-sucking chamber for pump |
| CN107965470A (en) * | 2017-05-08 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of centrifugal blower volute for range hood |
| CN107503948A (en) * | 2017-09-30 | 2017-12-22 | 江苏武新泵业有限公司 | A kind of inlet type double helix spiral case self priming pump with one heart |
| CN208416964U (en) * | 2018-07-16 | 2019-01-22 | 上海瑞晨环保科技股份有限公司 | Energy-efficient self priming centrifugal pump |
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Address after: 201800 2, 1501, 1519, 1533, Chengliu Middle Road, Jiading District, Shanghai. Applicant after: SHANGHAI RICHEN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 201800 2, 1501, 1519, 1533, Chengliu Middle Road, Jiading District, Shanghai. Applicant before: SHANGHAI RICHEN CO.,LTD. |
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