CN116181644A - Energy-saving vane pump capable of maintaining pressure at low speed - Google Patents
Energy-saving vane pump capable of maintaining pressure at low speed Download PDFInfo
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- CN116181644A CN116181644A CN202310152764.1A CN202310152764A CN116181644A CN 116181644 A CN116181644 A CN 116181644A CN 202310152764 A CN202310152764 A CN 202310152764A CN 116181644 A CN116181644 A CN 116181644A
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- Prior art keywords
- pressure
- cavity
- rotor
- pin
- side plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3446—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
- F04C2/3447—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface the vanes having the form of rollers, slippers or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
- F04C15/0049—Equalization of pressure pulses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/10—Stators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
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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)
- Rotary Pumps (AREA)
Abstract
The invention discloses an energy-saving vane pump capable of maintaining pressure at a low speed, which comprises a pump body, wherein a rotor, a stator, vanes and a side plate are arranged in the pump body, a high-pressure cavity and an oil outlet cavity are arranged on the side plate, a pin is arranged in the rotor, one end of the pin faces the root end of the vanes, a pin cavity is arranged at the other end of the pin, a pressure stabilizing cavity and a communication hole are also arranged on the side plate, the pressure stabilizing cavity is communicated with the oil outlet cavity through the communication hole, a guide hole is arranged on the rotor, and the pin cavity can be communicated with the pressure stabilizing cavity through the guide hole. According to the technical scheme, the pressure stabilizing cavity is separated from the high-pressure cavity on the side plate and is not communicated with the pressure stabilizing cavity, and the pressure stabilizing cavity is communicated with the oil outlet cavity with high stability of oil pressure through the communication hole, so that the oil pressure fluctuation in the root pressure cavity is blocked in the high-pressure cavity, the top ends of the blades are reliably abutted against the inner surface of the stator, and the reliable and stable pressure maintaining performance of the blade pump in a low-speed stage with the output flow close to the internal leakage flow is ensured.
Description
Technical Field
The invention relates to a vane pump, in particular to an energy-saving vane pump capable of being applied to low-speed pressure maintaining.
Background
The vane pump is widely applied to the fields of machine tools, plastic machines, leather machines, forging machines, engineering machines and the like due to the characteristics of large flow, high pressure, high efficiency and low noise during working, and the injection molding machine industry, heavy machinery industry and military industry are greatly improved along with the development and progress of the technology in China in recent decades, so that the application of the vane pump is also expanded to the industries.
The injection molding machine has a relatively long shaping and pressure maintaining stage in working, and heavy equipment in heavy machinery industry and military industry often has a long load pressure maintaining stage and a load low-speed stage, and the pressure maintaining stage and the load low-speed stage are characterized by high pressure and low flow. In order to save energy, the applicant submits a patent application of the invention named energy-saving vane pump to the national intellectual property agency (patent number: 2019105789613) on the 29 th month 2019, and the invention is characterized in that a partition structure is arranged on an oil distribution disc to block a communication channel for connecting a high-pressure cavity and an oil outlet cavity, so that the time for releasing pressure to the outside when a root pressure cavity on the lower side of a vane is extruded by the vane can be prolonged, the vane can still be reliably abutted against the inner surface of a stator when the centrifugal force is insufficient, and the low-speed pressure maintaining is realized, thereby realizing the purpose of saving energy by 97%.
Although the patent well solves the energy-saving problem of low-speed pressure maintaining of the vane pump in the implementation process, the phenomenon of pressure loss sometimes occurs when the output flow is close to the internal leakage flow of the vane pump.
Disclosure of Invention
In order to overcome the defects, the technical problems to be solved by the invention are as follows: the energy-saving vane pump can maintain pressure at a low speed, and the phenomenon of pressure loss does not occur when the output flow is close to the internal leakage flow.
The technical scheme for solving the problems in the prior art is as follows: the utility model provides an energy-conserving impeller pump that can pressurize at a low speed, it includes the pump body, be equipped with the transmission shaft in the pump body, cup jointed the rotor on the transmission shaft, the rotor is equipped with the stator outward, set up the blade groove on the rotor, the rotor with the equipartition has the blade between the stator, the root end of blade is located in the blade groove, the top orientation of blade the stator, the both sides of rotor are equipped with the curb plate respectively, be equipped with high-pressure chamber, play oil cavity on the curb plate respectively, be equipped with the pin that can follow rotor radial movement in the rotor, the one end orientation of pin the root end of blade, the rotor is in the other end position department of pin is equipped with the pin chamber, still be equipped with steady voltage chamber, intercommunicating pore on the curb plate, steady voltage chamber pass through the intercommunicating pore with play oil cavity is linked together, be equipped with the water conservancy diversion hole on the rotor, the pin chamber can with steady voltage chamber is linked together through the water conservancy diversion hole.
The basic structure of the prior art vane pump is as follows: the pump body is internally provided with a transmission shaft, a rotor is fixedly sleeved on the transmission shaft, a stator is arranged outside the rotor, the inner surface of the stator is formed into a near-elliptic shape by a large arc surface, a variable curvature arc surface and a small arc surface, a plurality of blade grooves are formed in the rotor, the blades are uniformly distributed between the rotor and the stator, the root ends of the blades are positioned in the blade grooves, the top ends of the blades face the stator, two sides of the rotor are respectively provided with side plates, a high-pressure cavity and an oil outlet cavity are respectively arranged on the two side plates, the root ends of the blades, the blade grooves and the two side plates enclose a root pressure cavity, the root pressure cavity is communicated with the high-pressure cavity, an annular pin cavity is arranged between the transmission shaft and the root pressure cavity, a penetrating pin hole is formed between the annular pin cavity and the root pressure cavity, pins which are movable relative to the pin holes are arranged in the pin holes, one ends of the pins are abutted to the root ends of the blades, the other ends of the pins are positioned in the annular pin cavity, and the annular pin cavity is also communicated with the high-pressure cavity through the guide holes. According to basic structural analysis of a vane pump, as a transmission shaft rotates, a vane moves in and out relative to a vane groove, the change of the volume of a root pressure cavity tends to cause the pressure fluctuation of the root pressure cavity, the pressure fluctuation in the root pressure cavity is inevitably conducted to the high pressure cavity due to the fact that the root pressure cavity is communicated with the high pressure cavity, the pressure fluctuation of the high pressure cavity is conducted to an annular pin cavity through a flow guide hole, the pressure fluctuation of the annular pin cavity is the result of the fact that the abutting force of a pin pushing the vane to the inner surface of a stator is unstable, and when the output flow of the vane pump is close to the internal leakage flow, that is, when the vane pump maintains the lowest rotating speed of stable high-pressure output, the top end of the vane is separated from the inner surface of the stator at intervals, so that the pressure loss phenomenon occurs. Therefore, the inventor proposes the technical scheme of the invention, the width of the high-pressure cavity on the side plate is narrowed, the high-pressure cavity can be communicated with the root pressure cavity only, and the pressure stabilizing cavity is arranged at the position where the original high-pressure cavity is communicated with the flow guide hole, the high-pressure cavity and the pressure stabilizing cavity are in an isolated state, so that the pressure fluctuation of the root pressure cavity can be blocked in the high-pressure cavity, the pressure stabilizing cavity is communicated with the oil outlet cavity through the communication hole, the oil pressure of the oil outlet cavity is stable, the vane can be reliably abutted against the inner surface of the stator, the disconnection phenomenon can not occur, and the occurrence of the pressure loss phenomenon is avoided. After experimental verification, the technical scheme of the invention is adopted, so that the phenomenon of pressure loss does not occur any more, and the technical analysis of the inventor is proved to be correct.
As a further technical scheme, one end of the communication hole is communicated with the pressure stabilizing cavity positioned at one side of the side plate, and the other end of the communication hole is communicated with the oil outlet cavity positioned at the other side of the side plate. The position of the oil outlet cavity on the other side of the side plate is basically close to the oil outlet of the vane pump, and the oil outlet of the vane pump is communicated with the oil supply pipeline of the whole oil supply system, so that the oil pressure of the oil outlet cavity on the other side of the side plate is relatively stable, and the other end of the communication hole is arranged on the position of the oil outlet cavity on the other side of the side plate, thereby being beneficial to the oil pressure stability of the pressure stabilizing cavity.
As a further technical scheme, the pressure stabilizing cavity is positioned at one side of the high-pressure cavity close to the transmission shaft. Therefore, the modification of the rotor can be avoided, and the comprehensive implementation cost of the technical scheme is reduced.
As a further technical scheme, the pressure stabilizing cavity extends in an arc shape with the axial center of the side plate as the center of a circle.
As a further technical scheme, the centroids of the oil outlet cavity, the high-pressure cavity and the pressure stabilizing cavity are positioned on the same radial direction of the side plate.
As a further technical solution, the diameter of the communication hole is 1 to 12mm. The diameter of the communication hole may be selected to be a suitable aperture between 1 and 12mm depending on the specifications of the vane pump.
As a further technical scheme, the diameter of the communication hole is 4.5mm. The pore diameter of the communication hole of this embodiment was selected to be 4.5mm.
The beneficial effects are that: according to the technical scheme, the pressure stabilizing cavity is separated from the high-pressure cavity on the side plate and is not communicated with the pressure stabilizing cavity, and the pressure stabilizing cavity is communicated with the oil outlet cavity with high stability of oil pressure through the communication hole, so that the oil pressure fluctuation in the root pressure cavity is blocked in the high-pressure cavity, the top ends of the blades are reliably abutted against the inner surface of the stator, and the reliable and stable pressure maintaining performance of the blade pump in a low-speed stage with the output flow close to the internal leakage flow is ensured.
Drawings
FIG. 1 is a schematic view of a construction of the present invention;
FIG. 2 is a schematic structural view of a prior art side panel;
FIG. 3 is a schematic view of the side plate of the present invention;
fig. 4 is a schematic view in rotational cross-section of a portion of the structure of the present invention.
In the figure: pump body 1, transmission shaft 2, rotor 3, stator 4, blade 5, blade groove 6, curb plate 7, go out oil pocket 8, high-pressure chamber 9, oil absorption chamber 10, steady voltage chamber 11, intercommunicating pore 12, guiding hole 13, pin chamber 14, pin 15.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings.
Examples: the utility model provides an energy-conserving impeller pump that can pressurize at a low speed, as shown in the drawing, it includes pump body 1, be equipped with transmission shaft 2 in the pump body 1, rotor 3 has been cup jointed on the transmission shaft 2, rotor 3 is equipped with stator 4 outward, the last blade groove 6 of seting up of rotor 3, rotor 3 with the equipartition has blade 5 between the stator 4, the root end of blade 5 is located in blade groove 6, the top orientation of blade 5 stator 4, the both sides of rotor 3 are equipped with curb plate 7 respectively, be equipped with high-pressure chamber 9, play oil chamber 8, oil absorption chamber 10 on the curb plate 7 respectively, be equipped with in the rotor 3 can follow rotor 3 radial movement's pin 15, the one end orientation of pin 15 the root end of blade 5, rotor 3 is in the other end position department of pin 15 is equipped with pin chamber 14, still be equipped with steady voltage chamber 11, intercommunicating pore 12 on the curb plate 7, steady voltage chamber 11 is located high-pressure chamber 9 is close to one side of transmission shaft 2, steady voltage chamber 11 uses curb plate 7 axial center to be the centre, the both sides of rotor 3 are equipped with curb plate 8, steady voltage chamber 12 is located by the same pressure chamber 12, end that is located in the arc-shaped cavity 11 is located by the same intercommunicating pore 8, the diameter of 11 is located by the arc-shaped cavity 11, and is linked together with end 13.
The above-described embodiment is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.
What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (7)
1. The utility model provides an energy-conserving impeller pump that can pressurize at a low speed, it includes the pump body, be equipped with the transmission shaft in the pump body, cup jointed the rotor on the transmission shaft, the rotor is equipped with the stator outward, set up the blade groove on the rotor, the rotor with the equipartition has the blade between the stator, the root end of blade is located in the blade groove, the top orientation of blade the stator, the both sides of rotor are equipped with the curb plate respectively, be equipped with high-pressure chamber, play oil cavity on the curb plate respectively, be equipped with the pin that can follow rotor radial movement in the rotor, the one end orientation of pin the root end of blade, the rotor is in the other end position department of pin is equipped with the pin chamber, its characterized in that: the side plate is also provided with a pressure stabilizing cavity and a communication hole, the pressure stabilizing cavity is communicated with the oil outlet cavity through the communication hole, the rotor is provided with a guide hole, and the pin cavity can be communicated with the pressure stabilizing cavity through the guide hole.
2. The energy-saving vane pump capable of maintaining pressure at a low speed according to claim 1, wherein: one end of the communication hole is communicated with the pressure stabilizing cavity positioned at one side of the side plate, and the other end of the communication hole is communicated with the oil outlet cavity positioned at the other side of the side plate.
3. The energy-saving vane pump capable of maintaining pressure at a low speed according to claim 2, wherein: the pressure stabilizing cavity is positioned at one side of the high-pressure cavity, which is close to the transmission shaft.
4. A low-speed pressure maintaining energy-saving vane pump according to any one of claims 1 to 3, characterized in that: the pressure stabilizing cavity extends in an arc shape with the axial center of the side plate as the center of a circle.
5. A low-speed pressure maintaining energy-saving vane pump according to any one of claims 1 to 3, characterized in that: the centroids of the oil outlet cavity, the high-pressure cavity and the pressure stabilizing cavity are positioned on the same radial direction of the side plate.
6. A low-speed pressure maintaining energy-saving vane pump according to any one of claims 1 to 3, characterized in that: the diameter of the communication hole is 1 to 12mm.
7. A low-speed pressure maintaining energy-saving vane pump according to any one of claims 1 to 3, characterized in that: the diameter of the communication hole is 4.5mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310152764.1A CN116181644A (en) | 2023-02-23 | 2023-02-23 | Energy-saving vane pump capable of maintaining pressure at low speed |
| PCT/CN2023/117160 WO2024174491A1 (en) | 2023-02-23 | 2023-09-06 | Energy-saving vane pump capable of maintaining pressure at low speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310152764.1A CN116181644A (en) | 2023-02-23 | 2023-02-23 | Energy-saving vane pump capable of maintaining pressure at low speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116181644A true CN116181644A (en) | 2023-05-30 |
Family
ID=86434191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310152764.1A Pending CN116181644A (en) | 2023-02-23 | 2023-02-23 | Energy-saving vane pump capable of maintaining pressure at low speed |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116181644A (en) |
| WO (1) | WO2024174491A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024174491A1 (en) * | 2023-02-23 | 2024-08-29 | 台州弘一液压伺服科技有限公司 | Energy-saving vane pump capable of maintaining pressure at low speed |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1026086A (en) * | 1996-07-05 | 1998-01-27 | Kayaba Ind Co Ltd | Seizure preventing structure for vane pump |
| CN203201787U (en) * | 2013-02-04 | 2013-09-18 | 宁波威克斯液压有限公司 | Leak type high pressure vane pump |
| CN103089615B (en) * | 2013-02-04 | 2015-08-12 | 宁波威克斯液压有限公司 | The formula that leaks high pressure vane pump and using method thereof |
| CN110131162B (en) * | 2019-06-29 | 2024-04-09 | 台州弘一液压伺服科技有限公司 | Energy-saving vane pump |
| CN116181644A (en) * | 2023-02-23 | 2023-05-30 | 台州弘一液压伺服科技有限公司 | Energy-saving vane pump capable of maintaining pressure at low speed |
| CN219529296U (en) * | 2023-02-23 | 2023-08-15 | 台州弘一液压伺服科技有限公司 | Energy-saving vane pump capable of maintaining pressure at low speed |
-
2023
- 2023-02-23 CN CN202310152764.1A patent/CN116181644A/en active Pending
- 2023-09-06 WO PCT/CN2023/117160 patent/WO2024174491A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024174491A1 (en) * | 2023-02-23 | 2024-08-29 | 台州弘一液压伺服科技有限公司 | Energy-saving vane pump capable of maintaining pressure at low speed |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024174491A1 (en) | 2024-08-29 |
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