CN114718879B - Non-sealing self-priming pump with structure for improving self-priming performance - Google Patents
Non-sealing self-priming pump with structure for improving self-priming performance Download PDFInfo
- Publication number
- CN114718879B CN114718879B CN202210515611.4A CN202210515611A CN114718879B CN 114718879 B CN114718879 B CN 114718879B CN 202210515611 A CN202210515611 A CN 202210515611A CN 114718879 B CN114718879 B CN 114718879B
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- China
- Prior art keywords
- pump
- impeller
- shaft body
- pump body
- auxiliary impeller
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- 238000007789 sealing Methods 0.000 title claims description 28
- 238000000926 separation method Methods 0.000 claims abstract description 57
- 125000006850 spacer group Chemical group 0.000 claims abstract description 14
- 230000037452 priming Effects 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 40
- 239000000203 mixture Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000009467 reduction 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
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming pumps
-
- 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
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- 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
- F04D29/18—Rotors
- F04D29/185—Rotors consisting of a plurality of wheels
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of sealless self-priming pumps, and provides a sealless self-priming pump with a structure for improving self-priming performance, which comprises a pump body, a shaft body rotationally arranged on the pump body, a main impeller and an auxiliary impeller which are arranged on the shaft body, wherein a separation space is formed between the main impeller and the auxiliary impeller, the pump body is also provided with an exhaust port, the exhaust port is positioned at the top of the separation space, the exhaust port is circumferentially distributed along the auxiliary impeller, the exhaust port is communicated with the auxiliary impeller, the sealless self-priming pump further comprises a spacer, the spacer is fixedly arranged on the pump body, the spacer is distributed around the shaft body, the spacer separates the separation space from the auxiliary impeller, and the spacer, the shaft body and the auxiliary impeller form a separation space. Through above-mentioned technical scheme, solved among the prior art impeller back shroud and rotated and formed the low pressure district, lead to gas unable follow auxiliary impeller exhaust's problem.
Description
Technical Field
The invention relates to the technical field of sealless self-priming pumps, in particular to a sealless self-priming pump with a structure for improving self-priming performance.
Background
The self-priming function of the sealless self-priming pump is that heavy liquid flows back downwards and is mixed again with new gas after the medium mixed with gas and liquid enters the separating chamber, the light gas is discharged, then the process is circulated continuously, the self-priming process is completed after the gas is discharged, and normal operation is carried out.
The axial dimension and the radial dimension of the pump seat are designed to be smaller in consideration of the reduction of production cost of the general sealless self-priming pump, so that the self-priming performance of the pump can be influenced in a similar way. The self-priming pump has higher self-priming performance, and a certain water level is arranged above the impeller, as shown in figure 1. Because the axial and radial dimensions of the pump seat are designed to be smaller, the impeller rotates during the self-priming process of the pump, the impeller back cover plate drives the liquid in the pump cavity to rotate, the liquid moves to the periphery, and the gas moves to the middle area (low pressure area) as shown in fig. 1. The gas-liquid mixture in the self-priming process is discharged from the impeller, the gas-liquid mixture is separated in the upward movement process, the gas enters the middle low-pressure area (the pressure at the auxiliary impeller is higher than that in the middle area), the gas cannot be discharged from the auxiliary impeller, and the middle water level gradually drops along with the increase of the gas. In the self-priming process, the liquid continuously returns to the pump body from the periphery of the impeller, namely self-priming backwater. When the middle water level continues to drop, the gas in the middle low-pressure area enters the pump body along the periphery of the impeller, the self-priming height is not increased, the gas in the middle area circulates in the pump body, and the gas cannot be discharged from the auxiliary impeller, so that the requirement of the self-priming height cannot be met.
There is therefore a need for a solution to the above problems.
Disclosure of Invention
The invention provides a sealless self-priming pump with a structure for improving self-priming performance, which solves the problem that in the prior art, a rear cover plate of an impeller rotates to form a low-pressure area, so that gas cannot be discharged from an auxiliary impeller.
The technical scheme of the invention is as follows:
The utility model provides a no-seal self priming pump with improve self priming performance structure, includes the pump body and rotates the axis body that sets up on the pump body, still includes setting up main impeller and the auxiliary impeller on the axis body, main impeller with form the separation space between the auxiliary impeller, the pump body still has the gas vent, the gas vent is located the top of separation space, the gas vent is followed auxiliary impeller circumference distributes, the gas vent with auxiliary impeller intercommunication still includes,
The isolating piece is fixedly arranged on the pump body, the isolating piece is distributed around the shaft body, the isolating piece separates the separation space from the auxiliary impeller, and the isolating piece, the shaft body and the auxiliary impeller form a separation space.
As a further technical solution, the spacer comprises,
One end of the sleeve is arranged on the pump body, the sleeve is distributed around the shaft body,
The baffle, the baffle sets up the sleeve is kept away from the one end of impeller, the axis body passes the baffle, the baffle with have the clearance between the axis body.
As a further technical scheme, the sleeve is connected with the pump body through a fastener.
As a further technical scheme, the diameter of the baffle is larger than that of the main impeller.
As a further technical scheme, the shaft body is provided with a first annular key groove; also included is a method of manufacturing a semiconductor device,
The sealing piece is arranged on the shaft body, the sealing piece is positioned in the gap, the sealing piece is provided with an elastic part, the elastic part is used for shielding the gap, and the elastic part enters the first annular key groove to open the gap.
As a further technical scheme, the shaft body is further provided with a second annular key groove, the second annular key groove is located at two sides of the first annular key groove along the axial direction of the shaft body, the sealing piece is further provided with a fixing portion, the fixing portion is located at two ends of the elastic portion, and the fixing portion stretches into the second annular key groove.
As a further technical scheme, the pump body is provided with an air inlet; the novel air pump further comprises an annular air bag, the annular air bag is arranged on the pump body and located in the separation space, the annular air bag is provided with an air inlet space, and the air inlet hole is communicated with the air inlet space and the outside of the pump body.
The working principle and the beneficial effects of the invention are as follows:
The invention relates to a sealless self-priming pump with a structure for improving self-priming performance, which comprises a pump body, a shaft body rotationally arranged on the pump body, a main impeller and an auxiliary impeller which are arranged on the shaft body, wherein a separation space is formed between the main impeller and the auxiliary impeller, the pump body is also provided with an exhaust port which is positioned at the top of the separation space, the exhaust port is circumferentially distributed along the auxiliary impeller, the exhaust port is communicated with the auxiliary impeller, the sealless self-priming pump also comprises a spacer which is fixedly arranged on the pump body and is distributed around the shaft body, the spacer separates the separation space from the auxiliary impeller, and the spacer, the shaft body and the auxiliary impeller form a separation space,
When the pump works, after the isolating piece is additionally arranged, the shaft body rotates to drive the main impeller and the auxiliary impeller to rotate, the main impeller sends the gas-liquid mixture into the separating space, the auxiliary impeller rotates to drive the impeller back cover plate to rotate, so that the liquid in the separating space rotates to form an intermediate low-pressure area, the liquid in the separating space can not rotate along with the impeller back cover plate, the gas-liquid mixture in the separating space can be separated, the gas is upwards discharged from the gas outlet through the auxiliary impeller, the liquid is discharged from the liquid outlet, the separating space is communicated with the separating space, the liquid can realize the conversion between the separating space and the separating space, the low-pressure area is formed in the separating space, the sealing of the pump body is realized,
The beneficial effect has avoided low pressure district and separation space intercommunication through setting up the barrier, thereby make gas rush to middle low pressure district, make gas can follow the gas vent of week side and pass through the auxiliary vane and discharge, and can ensure return water liquid level height unchangeable, make the self priming pump can realize effective exhaust and sufficient self priming return water liquid level height, thereby improve self priming pump body self priming performance.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2A in accordance with the present invention;
In the figure: 1. the pump body, 2, the shaft body, 3, the main impeller, 4, the auxiliary impeller, 31, the separation space, 11, the exhaust port, 5, the isolation piece, 32, the separation space, 51, the sleeve, 52, the baffle, 53, the clearance, 21, the first annular key groove, 6, the sealing piece, 61, the elastic part, 22, the second annular key groove, 62, the fixed part, 23, the air inlet hole, 7, the annular air bag, 71 and the air inlet space.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, this embodiment proposes a sealless self-priming pump with a structure for improving self-priming performance, which comprises a pump body 1, a shaft body 2 rotatably disposed on the pump body 1, a main impeller 3 and an auxiliary impeller 4 disposed on the shaft body 2, a separation space 31 is formed between the main impeller 3 and the auxiliary impeller 4, the pump body 1 further comprises an air outlet 11, the air outlet 11 is disposed at the top of the separation space 31, the air outlet 11 is circumferentially distributed along the auxiliary impeller 4, the air outlet 11 is communicated with the auxiliary impeller 4,
The isolating piece 5, the isolating piece 5 is fixedly arranged on the pump body 1, the isolating piece 5 is distributed around the shaft body 2, the isolating piece 5 separates the separating space 31 from the auxiliary impeller 4, and the isolating piece 5, the shaft body 2 and the auxiliary impeller 4 form a separating space 32.
In the embodiment, the sealless self-priming pump with the structure for improving self-priming performance comprises a pump body 1, a shaft body 2 rotatably arranged on the pump body 1, a main impeller 3 and an auxiliary impeller 4 arranged on the shaft body 2, a separation space 31 formed between the main impeller 3 and the auxiliary impeller 4, an exhaust port 11 arranged on the top of the separation space 31, the exhaust port 11 circumferentially distributed along the auxiliary impeller 4, and a separator 5 fixedly arranged on the pump body 1, wherein the separator 5 surrounds the shaft body 2, the separator 5 separates the separation space 31 from the auxiliary impeller 4, the separator 5, the shaft body 2 and the auxiliary impeller 4 form a separation space 32,
When the pump works, after the separator 5 is additionally arranged, the shaft body 2 rotates to drive the main impeller 3 and the auxiliary impeller 4 to rotate, the main impeller 3 sends the gas-liquid mixture into the separation space 31, the auxiliary impeller 4 rotates to drive the impeller back cover plate to rotate, so that the liquid in the separation space 32 rotates to form an intermediate low-pressure area, the liquid in the separation space 31 can not rotate along with the impeller back cover plate, the gas-liquid mixture in the separation space 31 can be separated, the gas is upwards discharged from the exhaust port 11 through the auxiliary impeller 4, the liquid is discharged from the liquid outlet, the separation space 32 is communicated with the separation space 31, the liquid can realize the conversion between the separation space 32 and the separation space 31, and the low-pressure area is formed in the separation space 32, so that the sealing of the pump body 1 is realized,
The low-pressure area and the separation space 31 are avoided from being communicated by the partition 5, so that gas runs to the middle low-pressure area, gas can be discharged from the exhaust port 11 on the periphery side through the auxiliary impeller 4, the return water liquid level height can be kept unchanged, the self-priming pump can realize effective exhaust and enough self-priming return water liquid level height, and the self-priming performance of the self-priming pump body 1 is improved.
Further, the spacer 5 includes a plurality of spacers,
A sleeve 51, one end of the sleeve 51 is arranged on the pump body 1, the sleeve 51 is distributed around the shaft body 2,
A baffle plate 52, the baffle plate 52 is arranged at one end of the sleeve 51 away from the auxiliary impeller 4, the shaft body 2 passes through the baffle plate 52, and a gap 53 is arranged between the baffle plate 52 and the shaft body 2.
In this embodiment, the spacer 5 includes a sleeve 51 and a baffle plate 52, one end of the sleeve 51 is disposed on the pump body 1, the sleeve 51 is distributed around the shaft body 2, the baffle plate 52 is disposed at one end of the sleeve 51 far away from the secondary impeller 4, the shaft body 2 passes through the baffle plate 52, a gap 53 is provided between the baffle plate 52 and the shaft body 2, in operation, the sleeve 51 is disposed on the pump body 1, the sleeve 51 is sleeved outside the shaft body 2, the sleeve 51 and the baffle plate 52 form a separation space 32, the sleeve 51 separates a low pressure area caused by an impeller back plate from the separation space 31 when the sleeve 51 rotates the shaft body 2, the sleeve 51 cannot rotate along with the shaft body 2, the baffle plate 52 shields the bottom of the sleeve 51, the shaft body 2 passes through the sleeve 51, a gap 53 is provided between the shaft body 2 and the sleeve 51, so that the separation space 31 and liquid in the separation space 32 can exchange, thereby adjusting the size of the low pressure area in the separation space 32, preventing the height of backwater liquid level from being affected by the volume in the low pressure area, the baffle plate 52 is located at the outlet end of the main impeller 3, the gas-liquid mixture sent from the main impeller 3 can be separated from the circumferential direction of the pump body 1, the gas can be prevented from being sent from the main impeller 3 to the middle, the gas can be prevented from being pumped from the circumferential direction of the pump body 1, the self-sucking efficiency can be increased, and the efficiency can be prevented from the exhaust efficiency can be increased, and the exhaust efficiency can be increased.
Further, the sleeve 51 is connected to the pump body 1 by a fastener.
In this embodiment, sleeve 51 passes through the fastener with pump body 1 to be connected, the fastener can be the bolt, set up the gasket between fastener and the pump body 1 to guarantee the seal between sleeve 51 and the pump body 1, prevent that the gas in the separation space 31 from flowing to separating space 32, sleeve 51 and baffle 52 can be split type setting, after having installed axis body 2, separately cover sleeve 51 and baffle 52 establish on axis body 2, thereby form separating space 32, make sleeve 51 and baffle 52 better install, connect through the fastener, still can make pump body 1 more convenient maintenance and change, can increase the stability of device.
Further, the diameter of the baffle plate 52 is larger than the diameter of the main impeller 3.
In this embodiment, the diameter of the baffle plate 52 is larger than that of the main impeller 3, the baffle plate 52 can guide the gas-liquid mixture flowing out from the main impeller 3 to the circumferential side of the pump body 1, so that the gas can be discharged from the exhaust port 11 more quickly, and the liquid can flow to the liquid outlet more quickly, but the baffle plate 52 can not completely shield the liquid outlet of the main impeller 3, and only plays a role in guiding flow, and the baffle plate 52 can play a certain role in guiding flow for self-priming backwater, so that the self-priming efficiency of the self-priming pump is increased.
Further, the shaft body 2 has a first annular key groove 21; also included is a method of manufacturing a semiconductor device,
The sealing element 6 is sleeved on the shaft body 2, the sealing element 6 is positioned in the gap 53, the sealing element 6 is provided with an elastic part 61, the elastic part 61 shields the gap 53, and the elastic part 61 enters the first annular key groove 21 to open the gap 53.
In this embodiment, the shaft body 2 has a first annular key groove 21; the self-priming pump is characterized by further comprising a sealing element 6, the sealing element 6 is sleeved on the shaft body 2, the sealing element 6 is positioned in the gap 53, the sealing element 6 is provided with an elastic part 61, the elastic part 61 shields the gap 53, the elastic part 61 enters the first annular key groove 21 to open the gap 53, when the self-priming pump is operated, the shaft body 2 drives the impeller back plate to rotate, a certain small low-pressure area is formed in the separation space 32, a certain water pressure difference is formed between the separation space 32 and the separation space 31 at the gap 53, when the low-pressure area in the separation space 32 is enlarged, the pressure at the separation space 32 is increased, so that the sealing element 6 is extruded, the sealing element 6 moves into the first annular key groove 21, so that the gap 53 is opened, liquid in the separation space 32 can also be extruded into the first annular key groove 21 when the liquid pressure in the separation space 31 is enlarged, so that the gap 53 is opened, the separation space 32 and the separation space 31 can be communicated with the separation space 31, and the separation space 32 can not be influenced by the pressure of the separation space 31 under the condition.
Further, the shaft body 2 further has a second annular key groove 22, the second annular key groove 22 is located at two sides of the first annular key groove 21 along the axial direction of the shaft body 2, the sealing member 6 further has fixing portions 62, the fixing portions 62 are located at two ends of the elastic portion 61, and the fixing portions 62 extend into the second annular key groove 22.
In this embodiment, the shaft body 2 further has a second annular key groove 22, the second annular key groove 22 is located at two sides of the first annular key groove 21 along the axial direction of the shaft body 2, the sealing element 6 further has a fixing portion 62, the fixing portion 62 is connected with the second annular key groove 22 of the shaft body 2, the second annular key groove 22 is in interference connection with the fixing portion 62, the fixing portion 62 is fixed with the second annular key groove 22, so that when the sealing element 6 is extruded by liquid in the separation space 31 or the separation space 32, the sealing element 6 is fixed and fastened, the sealing element 6 cannot deviate along the axial direction of the shaft body 2, and stability when the sealing element 6 is extruded is increased.
Further, the pump body 1 has an air intake hole 23; the novel air pump further comprises an annular air bag 7, the annular air bag 7 is arranged on the pump body 1, the annular air bag 7 is located in the separation space 31, the annular air bag 7 is provided with an air inlet space 71, and the air inlet hole 23 is communicated with the air inlet space 71 and the outside of the pump body 1.
In this embodiment, the pump body 1 has an air intake hole 23; still include annular gasbag 7, annular gasbag 7 sets up on pump body 1, annular gasbag 7 is located separation space 31, annular gasbag 7 has air inlet space 71, air inlet hole 23 connects air inlet space 71 and the outside of pump body 1, during operation, annular gasbag 7 sets up in pump body 1, the outside of pump body 1 is provided with air inlet unit or feed liquor device, through making annular gasbag 7 expand, thereby adjust the liquid level in pump body 1, air inlet unit and feed liquor device pass through the liquid flow rate of self priming pump liquid outlet, thereby the volume of annular gasbag 7, thereby adjust the liquid level in the self priming pump, increase gaseous self priming efficiency, annular gasbag 7 sets up around pump body 1 gas vent 11, can effectively adjust the liquid level, annular gasbag 7 is hard tube connection with the junction of pump body 1, annular gasbag 7 can change, the stability of pump body 1 is increased.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. The utility model provides a no-seal self priming pump with improve self priming performance structure, includes pump body (1) and rotates setting up axis body (2) on pump body (1), still includes setting up main impeller (3) and auxiliary impeller (4) on axis body (2), main impeller (3) with form separation space (31) between auxiliary impeller (4), pump body (1) still has gas vent (11), gas vent (11) are located the top of separation space (31), gas vent (11) are followed auxiliary impeller (4) circumference distributes, gas vent (11) with auxiliary impeller (4) intercommunication, its characterized in that still includes,
The isolating piece (5), the isolating piece (5) is fixedly arranged on the pump body (1), the isolating piece (5) surrounds the shaft body (2) and is distributed, the isolating piece (5) separates the separating space (31) from the auxiliary impeller (4), the isolating piece (5), the shaft body (2) and the auxiliary impeller (4) form a separating space (32),
The spacer (5) comprises a plurality of spacers,
A sleeve (51), wherein one end of the sleeve (51) is arranged on the pump body (1), the sleeve (51) is distributed around the shaft body (2),
A baffle plate (52), wherein the baffle plate (52) is arranged at one end of the sleeve (51) far away from the auxiliary impeller (4), the shaft body (2) passes through the baffle plate (52), a gap (53) is arranged between the baffle plate (52) and the shaft body (2), the diameter of the baffle plate (52) is larger than that of the main impeller (3), and the shaft body (2) is provided with a first annular key groove (21); also included is a method of manufacturing a semiconductor device,
The sealing element (6), sealing element (6) cover is established on the axis body (2), sealing element (6) are located in clearance (53), sealing element (6) have elastic part (61), elastic part (61) ring shelter from clearance (53), elastic part (61) get into in first annular keyway (21) open clearance (53).
2. A sealless self priming pump with improved self priming feature as claimed in claim 1, wherein the sleeve (51) is connected to the pump body (1) by fasteners.
3. A sealless self priming pump with improved self priming feature as claimed in claim 2, wherein said shaft body (2) further has a second annular keyway (22), said second annular keyway (22) being located on either side of said first annular keyway (21) in the axial direction of said shaft body (2), said seal (6) further having a securing portion (62), said securing portion (62) being located on either end of said resilient portion (61), said securing portion (62) extending into said second annular keyway (22).
4. A sealless self priming pump with improved self priming feature as claimed in claim 3, wherein the pump body (1) has an inlet orifice (23); still include annular gasbag (7), annular gasbag (7) set up on the pump body (1), annular gasbag (7) are located in separation space (31), annular gasbag (7) have air inlet space (71), inlet port (23) intercommunication air inlet space (71) with pump body (1) are outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210515611.4A CN114718879B (en) | 2022-05-12 | 2022-05-12 | Non-sealing self-priming pump with structure for improving self-priming performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210515611.4A CN114718879B (en) | 2022-05-12 | 2022-05-12 | Non-sealing self-priming pump with structure for improving self-priming performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114718879A CN114718879A (en) | 2022-07-08 |
| CN114718879B true CN114718879B (en) | 2024-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210515611.4A Active CN114718879B (en) | 2022-05-12 | 2022-05-12 | Non-sealing self-priming pump with structure for improving self-priming performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114718879B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202040088U (en) * | 2011-05-09 | 2011-11-16 | 长沙天鹅工业泵股份有限公司 | High-efficiency, energy-saving and leakage-free vertical self-sucking pump |
| CN205423177U (en) * | 2016-02-27 | 2016-08-03 | 镇江万林泵业有限公司 | There is not sealed vertical self priming pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100491738C (en) * | 2006-04-28 | 2009-05-27 | 上海凯泉泵业（集团）有限公司 | Non leakage fully power closed type vertical self priming pump |
-
2022
- 2022-05-12 CN CN202210515611.4A patent/CN114718879B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202040088U (en) * | 2011-05-09 | 2011-11-16 | 长沙天鹅工业泵股份有限公司 | High-efficiency, energy-saving and leakage-free vertical self-sucking pump |
| CN205423177U (en) * | 2016-02-27 | 2016-08-03 | 镇江万林泵业有限公司 | There is not sealed vertical self priming pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114718879A (en) | 2022-07-08 |
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