CN114233642A - Water pump capable of discharging bubbles in fluid - Google Patents

Water pump capable of discharging bubbles in fluid Download PDF

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Publication number
CN114233642A
CN114233642A CN202111313847.1A CN202111313847A CN114233642A CN 114233642 A CN114233642 A CN 114233642A CN 202111313847 A CN202111313847 A CN 202111313847A CN 114233642 A CN114233642 A CN 114233642A
Authority
CN
China
Prior art keywords
arc
stator
water pump
shaped partition
exhaust
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.)
Granted
Application number
CN202111313847.1A
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Chinese (zh)
Other versions
CN114233642B (en
Inventor
颜成刚
林荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leo Group Zhejiang Pump Co Ltd
Original Assignee
Leo Group Zhejiang Pump Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Leo Group Zhejiang Pump Co Ltd filed Critical Leo Group Zhejiang Pump Co Ltd
Priority to CN202111313847.1A priority Critical patent/CN114233642B/en
Publication of CN114233642A publication Critical patent/CN114233642A/en
Application granted granted Critical
Publication of CN114233642B publication Critical patent/CN114233642B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor 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
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a water pump capable of discharging bubbles in fluid, which belongs to the field of intelligent water pumps and comprises a pump body, wherein an impeller is arranged in the pump body, a plurality of arc-shaped partition plates are arranged in the impeller, a spiral flow channel for passing fluid is formed between every two adjacent arc-shaped partition plates, an air groove is formed in each arc-shaped partition plate, and an exhaust structure comprises an exhaust channel communicated with the air groove; the exhaust passage can be used for discharging gas in the water pump, so that bubbles are prevented from entering the structure of the rotor and the stator, cavitation is reduced, and the problems that in the prior art, bubbles existing in the fluid of the water pump can generate cavitation to the inner structure of the water pump, the service life of the water pump is shortened, and larger noise is generated during operation are solved.

Description

Water pump capable of discharging bubbles in fluid
Technical Field
The invention relates to an intelligent water pump, in particular to a water pump capable of discharging bubbles in fluid.
Background
The inside of the fluid of the water pump often has air bubbles which flow along with the fluid, and when the air bubbles move to a fine structure of the water pump, cavitation is easy to generate, so that the service life of the water pump is reduced, or the water pump generates larger noise during operation.
For example, the publication of "a miniature water pump capable of exhausting" in the chinese patent literature has a publication number CN201920933407.8, which includes a pump head, a pump housing, an exhaust plug, an isolation chamber, a connecting shaft, a rotor, a stator motor and a PCBA control board; the pump head and the isolation cavity are covered on an opening of the pump shell; the isolation cavity is arranged in the pump shell and the pump head and divides the cavity in the pump shell and the pump head into a pump cavity and a pump waterproof cavity; the rotor is arranged in the pump cavity; the connecting shaft penetrates through the rotor, and two ends of the connecting shaft are respectively fixedly connected with the pump head and the isolation cavity; the stator motor is arranged in the pump waterproof cavity and used for driving the rotor in the pump cavity to rotate; the PCBA control panel is arranged in the pump waterproof cavity and electrically connected with the stator motor; the pump head is provided with an exhaust port, and an exhaust plug is matched with the exhaust port. In the utility model, the air outlet is arranged on the pump head, which is beneficial to discharging the air in the water pump and reduces the damage of the water pump in the water-free state; however, the pump has the disadvantages that the gas in the pump body cannot be collected at the air outlet, and if bubbles are contained in the introduced fluid, the bubbles cannot be discharged out of the pump body, and cavitation erosion is still generated on a fine structure in the pump body, so that the service life of the water pump is shortened, and loud noise is generated during use.
Disclosure of Invention
The invention provides a water pump capable of discharging bubbles in fluid, aiming at overcoming the problems that in the prior art, bubbles in the fluid of the water pump can generate cavitation erosion phenomenon on the internal structure of the water pump, so that the service life of the water pump is shortened, and larger noise is generated during operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses a water pump capable of discharging bubbles in fluid, which comprises a pump body, wherein the pump body comprises a pump body shell, the front end of the pump body shell is provided with a water inlet, the rear end of the pump body shell is provided with a water outlet, the front part of the pump body is provided with an exhaust structure, a stator and a rotor are arranged in the pump body shell, a stator front cover and a stator rear cover are respectively arranged at two ends of the stator, a flow guide shell is arranged at the front side of the stator front cover, an impeller mounting groove is arranged in the flow guide shell, an impeller is arranged in the impeller mounting groove, a plurality of arc-shaped partition plates are arranged in the impeller, a spiral flow passage for passing the fluid is formed between every two adjacent arc-shaped partition plates, an air groove is arranged in each arc-shaped partition plate, and the exhaust structure comprises an exhaust passage communicated with the air groove.
The exhaust channel can be used for exhausting gas in the water pump, so that bubbles are prevented from entering the structure of the rotor and the stator, and the cavitation phenomenon is reduced; because this scheme, the fluid that passes through all need pass through the impeller in the water pump, and the fluid can receive arc baffle's pressure when passing through the impeller, consequently, in the spiral runner, the fluid can be close to the arc baffle of one side wherein to make the bubble concentrate in the arc baffle department of opposite side, can be with concentrating in the leading-in exhaust passage of the bubble of arc baffle one side through the air duct in the arc baffle, thereby discharge water pump.
Preferably, one side of the arc-shaped partition board facing the center of the curvature circle of the arc-shaped partition board is the inner side, the other side of the arc-shaped partition board facing away from the center of the curvature circle of the arc-shaped partition board is the outer side, the air groove and the spiral flow channel are separated by a water-proof air-permeable film, and the water-proof air-permeable film is positioned on the inner side of the arc-shaped partition board; rotate at the impeller and provide the in-process of power for the fluid, the outside of arc baffle takes place the extrusion with the fluid, consequently the fluid can be close to the outside of arc baffle, and the inboard department of adjacent arc baffle is then concentrated to the bubble, through the water proof ventilated membrane that sets up intercommunication air duct in the inboard of arc baffle, can be so that concentrate on the bubble entering air duct of the inboard department of arc baffle.
Preferably, the pump body comprises a pump body front cover, an annular exhaust channel installation part is arranged on the pump body front cover, the exhaust channel comprises an exhaust channel outer section and an exhaust channel inner section, the impeller comprises a bottom plate and a cover plate, the arc-shaped partition plate is positioned on the bottom plate, the cover plate is provided with the exhaust channel inner section, the exhaust channel inner section is annular and is installed in the exhaust channel installation part in a matched mode, the exhaust channel outer section is installed on the exhaust channel installation part, the exhaust channel outer section is connected with an exhaust pipe, and an air suction pump is arranged in the exhaust pipe; because the inner section of the exhaust channel is positioned on the cover plate, the inner section of the exhaust channel can rotate while the impeller rotates, and the annular exhaust channel mounting part can ensure that the annular channel can still keep a sealing state while the impeller rotates; and the air suction pump can enable the interior of the exhaust passage to be in a negative pressure state, so that air bubbles in the impeller can enter the air groove and the exhaust passage.
Preferably, the rotating shaft of the rotor is matched with the impeller, and one end of the rotating shaft of the rotor, which is positioned at the water inlet, is provided with a rotating blade; the rotating blades can rotate synchronously with the impeller, and large bubbles in fluid are broken into small bubbles before the fluid enters the impeller, so that gas close to the arc-shaped partition plate can more easily enter the gas tank through the waterproof breathable film.
Preferably, an inner flow passage is arranged on the inner side of the stator, an outer flow passage is arranged on the outer side of the stator, a first outlet communicated with the outer flow passage is arranged on the outer side of the flow guide shell, and a second outlet communicated with the inner flow passage is arranged on one side of the flow guide shell, facing the front cover of the stator; the diversion shell divides the fluid into the outer flow passage and the inner flow passage, the outer flow passage dissipates heat generated by the stator through the outer side of the stator, the inner flow passage dissipates heat generated by the stator and the rotor through the space between the rotor and the stator, and overhigh temperature of the stator and the rotor in the running process of the water pump is avoided.
Preferably, an annular flow limiting block is arranged between the stator front cover and the water pump rotor, and a flow limiting groove communicated with the inner flow channel is formed in the flow limiting block; the flow limiting groove is used for reducing the flow of fluid in the inner flow passage, the inner flow passage is positioned in a gap between the rotor and the stator, the sectional area of the inner flow passage is small, the flow speed is high, the flow speed of the fluid in the inner flow passage can be reduced by limiting the flow through the flow limiting groove, and more friction heat between the fluid and the stator rotor is avoided.
Preferably, a deposition cavity is further arranged between the stator front cover and the flow guide shell, the deposition cavity is communicated with a second outlet, and the second outlet is a round hole coaxial with the rotor; due to the effect of the spiral flow channel in the impeller, fluid in the flow guide shell can rotate to form rotational flow, so that impurities in the fluid can converge towards the middle part of the flow guide shell, namely the second outlet, and enter the deposition cavity, the impurity filtering effect is achieved, the situation that the impurities enter the inner flow channel or the outer flow channel to cause friction with the stator or the rotor is avoided, and the impurities in the deposition cavity can be cleaned through periodic maintenance.
Therefore, the invention has the following beneficial effects: (1) air bubbles in the fluid can be discharged before the fluid passes through a fine structure in the water pump, so that the cavitation condition is reduced; (2) the stator and the rotor can be radiated, so that overhigh temperature is avoided; (3) impurities in the fluid can be gathered in the deposition cavity, so that the amount of the impurities entering the inner flow channel and the outer flow channel is reduced.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is a partially enlarged schematic view of the exhaust structure of the present invention.
Fig. 3 is a schematic view of an internal structure of the guide shell and impeller of the present invention.
Fig. 4 is a cross-sectional view of the impeller of the present invention at the location of the arcuate partition.
In the figure: 1. the device comprises an exhaust structure 2, a stator front cover 3, a guide shell 4, an impeller mounting groove 5, an impeller 6, an arc-shaped partition plate 7, a spiral flow channel 8, an air groove 9, an inner side 10, an outer side 11, a water-proof and air-permeable film 12, an exhaust channel mounting part 13, an exhaust channel outer section 14, an exhaust channel inner section 15, a bottom plate 16, a cover plate 17, a rotating blade 18, a first outlet 19, a second outlet 20, an impeller water inlet channel 21, a water inlet 22, a flow limiting block 23, a flow limiting groove 24 and a deposition cavity.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
In the embodiment shown in fig. 1-4, a water pump capable of discharging bubbles in fluid comprises a pump body, the pump body comprises a pump body housing, the front part of the pump body is provided with an exhaust structure 1, the pump body housing is internally provided with a stator and a rotor, the two ends of the stator are respectively provided with a stator front cover 2 and a stator rear cover, the front side of the stator front cover is provided with a diversion shell 3, the diversion shell is internally provided with an impeller mounting groove 4, an impeller 5 is mounted in the impeller mounting groove, the impeller is disc-shaped, the impeller is internally provided with a plurality of arc-shaped partition plates 6, a spiral flow passage 7 for passing fluid is formed between the two adjacent arc-shaped partition plates, the arc-shaped partition plates are internally provided with air grooves 8, the exhaust structure comprises an exhaust passage communicated with the air grooves, one side of the arc-shaped partition plate, facing the center of a curvature circle of the arc-shaped partition plate, is an inner side 9, and one side of the arc-shaped partition plate, which faces away from the center of the curvature circle of the arc-shaped partition plate, is an outer side 10, the air groove and the spiral flow channel are separated by a water-proof and breathable film 11, the water-proof and breathable film is positioned on the inner side of the arc-shaped partition plate, the pump body comprises a pump body front cover, an annular exhaust channel mounting part 12 is arranged on the pump body front cover, the exhaust channel comprises an exhaust channel outer section 13 and an exhaust channel inner section 14, the impeller comprises a bottom plate 15 and a cover plate 16, the arc-shaped partition plate is positioned on the bottom plate, the cover plate is provided with the exhaust channel inner section, the exhaust channel inner section is annular and is mounted in the exhaust channel mounting part in an adaptive mode, the exhaust channel outer section is mounted on the exhaust channel mounting part and is connected with an exhaust pipe, and an air pump is arranged in the exhaust pipe; the rotating shaft of the rotor is matched with the impeller, and one end of the rotating shaft of the rotor, which is positioned at the water inlet, is provided with a rotating blade 17; an outer flow passage is arranged on the outer side of the stator, an inner flow passage is arranged on the inner side of the stator, the inner flow passage is positioned between the rotor and the stator, a first outlet 18 communicated with the outer flow passage is arranged on the outer side of the flow guide shell, and a second outlet 19 communicated with the inner flow passage is arranged on one side of the flow guide shell facing the front cover of the stator; an impeller water inlet channel 20 is arranged on one side of the impeller and is communicated with the spiral flow channel and a water inlet 21 on the guide shell; an annular flow limiting block 22 is arranged between the stator front cover and the water pump rotor, and a flow limiting groove 23 communicated with the inner flow channel is formed in the flow limiting block; a deposition cavity 24 is further arranged between the stator front cover and the flow guide shell, the deposition cavity is communicated with a second outlet, and the second outlet is a round hole coaxial with the rotor; the stator front cover is provided with a front cover deposition groove on one side facing the guide shell, the guide shell is provided with a guide shell deposition groove on one side facing the stator front cover, and the front cover deposition groove and the guide shell deposition groove form the deposition cavity.
In the working process of the water pump, fluid enters the water pump from the water inlet and then enters the impeller of the guide shell, the impeller provides power for the fluid through the arc-shaped partition plate in the rotating process, the fluid is thrown out to the side face of the impeller along the spiral flow channel, the fluid leaving the impeller forms rotational flow in the guide shell, the fluid in the guide shell mainly flows to the outer flow channel through the first outlet, and a small part of the fluid flows to the inner flow channel through the second outlet, so that heat dissipation is carried out on the stator and the rotor; and a small amount of impurities in the water pump are converged at the middle part of the guide shell under the action of the rotational flow and flow to the second outlet along with the fluid, and because the fluid in the deposition cavity is in a non-flowing state, the impurities are finally deposited in the deposition cavity and cannot enter the inner flow channel or the outer flow channel.
If the entering fluid contains bubbles, the bubbles can enter the impeller together with the fluid, the fluid in the impeller can be extruded with the outer side of the arc-shaped partition plate when flowing in the spiral flow channel, the bubbles can be close to the inner side of the arc-shaped partition plate and enter the air groove through the waterproof and breathable film, and the air in the air groove enters the exhaust pipe through the exhaust passage so as to be discharged out of the water pump.

Claims (7)

1. The utility model provides a water pump of bubble in dischargeable fluid, characterized by, includes the pump body, the pump body includes pump body shell, and pump body shell's front end is equipped with the water inlet, and pump body shell's rear end is equipped with the delivery port, the front portion of the pump body is equipped with exhaust structure, be equipped with stator and rotor in the pump body shell, stator protecgulum and stator back cover are installed respectively to the both ends of stator, the blower inlet casing is installed to the front side of stator protecgulum, be equipped with the impeller mounting groove in the blower inlet casing, install the impeller in the impeller mounting groove, be equipped with a plurality of ARC, form between two adjacent ARC and be used for through fluidic spiral runner, be equipped with the gas tank in the ARC, exhaust structure include with the exhaust passage of gas tank intercommunication.
2. The water pump as claimed in claim 1, wherein the arc-shaped partition is located at an inner side of the arc-shaped partition facing the center of the circle of curvature of the arc-shaped partition and an outer side of the arc-shaped partition facing away from the center of the circle of curvature of the arc-shaped partition, the air groove is separated from the spiral flow passage by a water-proof and air-permeable membrane, and the water-proof and air-permeable membrane is located at the inner side of the arc-shaped partition.
3. The water pump as claimed in claim 1, wherein the pump body includes a front cover, the front cover has an annular exhaust channel mounting portion, the exhaust channel includes an outer exhaust channel section and an inner exhaust channel section, the impeller includes a bottom plate and a cover plate, the arc-shaped partition is located on the bottom plate, the cover plate has an inner exhaust channel section, the inner exhaust channel section is annular and is adapted to be mounted in the exhaust channel mounting portion, the outer exhaust channel section is mounted on the exhaust channel mounting portion, the outer exhaust channel section is connected to the exhaust pipe, and the exhaust pipe has a suction pump therein.
4. The water pump as claimed in claim 1, wherein the rotor has a shaft fitted to the impeller, and the end of the shaft at the water inlet is provided with a rotary blade.
5. The water pump as claimed in claim 1, wherein the stator has an inner flow passage on an inner side thereof, the stator has an outer flow passage on an outer side thereof, the guide shell has a first outlet communicating with the outer flow passage on an outer side thereof, and a second outlet communicating with the inner flow passage is provided on a side of the guide shell facing the front cover of the stator.
6. The water pump as claimed in claim 5, wherein an annular flow restriction block is installed between the front cover of the stator and the rotor of the water pump, and the flow restriction block is provided with a flow restriction groove communicating with the inner flow passage.
7. The water pump as claimed in claim 5 or 6, wherein a deposition chamber is further disposed between the front cover of the stator and the guide shell, the deposition chamber is communicated with a second outlet, and the second outlet is a circular hole coaxial with the rotor.
CN202111313847.1A 2021-11-08 2021-11-08 Water pump capable of discharging bubbles in fluid Active CN114233642B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111313847.1A CN114233642B (en) 2021-11-08 2021-11-08 Water pump capable of discharging bubbles in fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111313847.1A CN114233642B (en) 2021-11-08 2021-11-08 Water pump capable of discharging bubbles in fluid

Publications (2)

Publication Number Publication Date
CN114233642A true CN114233642A (en) 2022-03-25
CN114233642B CN114233642B (en) 2024-03-15

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Application Number Title Priority Date Filing Date
CN202111313847.1A Active CN114233642B (en) 2021-11-08 2021-11-08 Water pump capable of discharging bubbles in fluid

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921400A (en) * 1987-07-06 1990-05-01 A. Ahlstrom Corporation Pump and a method of separating gas by such from a fluid to be pumped
CN104533816A (en) * 2014-11-12 2015-04-22 中国科学院工程热物理研究所 Radial diffuser testing device and testing method of centrifugal compressor
CN105604956A (en) * 2016-01-27 2016-05-25 大连罗斯泵业有限公司 Combined type efficient self-sucking pump
CN205446147U (en) * 2016-02-25 2016-08-10 贵州鑫鑫曙光科技有限公司 Reposition of redundant personnel centrifugal pump
CN214247694U (en) * 2020-12-29 2021-09-21 河北祥迈泵业有限公司 Horizontal foam pump with continuous exhaust system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921400A (en) * 1987-07-06 1990-05-01 A. Ahlstrom Corporation Pump and a method of separating gas by such from a fluid to be pumped
CN104533816A (en) * 2014-11-12 2015-04-22 中国科学院工程热物理研究所 Radial diffuser testing device and testing method of centrifugal compressor
CN105604956A (en) * 2016-01-27 2016-05-25 大连罗斯泵业有限公司 Combined type efficient self-sucking pump
CN205446147U (en) * 2016-02-25 2016-08-10 贵州鑫鑫曙光科技有限公司 Reposition of redundant personnel centrifugal pump
CN214247694U (en) * 2020-12-29 2021-09-21 河北祥迈泵业有限公司 Horizontal foam pump with continuous exhaust system

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