CN111059330A - Hydraulic pressure control overflow valve - Google Patents
Hydraulic pressure control overflow valve Download PDFInfo
- Publication number
- CN111059330A CN111059330A CN201911424563.2A CN201911424563A CN111059330A CN 111059330 A CN111059330 A CN 111059330A CN 201911424563 A CN201911424563 A CN 201911424563A CN 111059330 A CN111059330 A CN 111059330A
- Authority
- CN
- China
- Prior art keywords
- pilot valve
- main valve
- valve seat
- pilot
- pressure
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 31
- 239000003921 oil Substances 0.000 claims description 19
- 230000009471 action Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 5
- 238000011089 mechanical engineering Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention belongs to the technical field of mechanical engineering, and particularly relates to a hydraulic pressure control overflow valve which comprises a main valve body device, wherein a main valve seat is arranged above the main valve body, a main valve core is arranged above the main valve seat, a main valve spring is arranged inside the main valve core, a sealing ring is arranged on one side of the main valve core, a pilot valve body is arranged above the main valve core, a pressure regulating nut is arranged inside the pilot valve body, a locking nut is arranged inside the pilot valve body, a pilot valve seat is arranged inside the pilot valve body, a pilot valve core is arranged inside the pilot valve seat, a pilot valve spring is arranged inside the pilot valve seat, a sealing ring is arranged inside the pilot valve seat, an adjusting rod is arranged inside the pilot valve seat, when the system pressure is reduced to the closing pressure of the overflow valve, the overflow valve is closed, a pump loads the system, the main valve body has small pressure regulating deviation and sensitive movement.
Description
Technical Field
The invention belongs to the technical field of mechanical engineering, and particularly relates to a hydraulic pressure control overflow valve.
Background
When the overflow valve works, the pressure of the spring is utilized to adjust and control the pressure of hydraulic oil, when the pressure of the hydraulic oil is smaller than the pressure required by work, the valve core is pressed at an inflow port of the hydraulic oil by the spring, when the pressure of the hydraulic oil exceeds the pressure allowed by the work, namely the pressure of the hydraulic oil is larger than the pressure of the spring, the valve core is jacked up by the hydraulic oil, the hydraulic oil flows back to the oil tank through the overflow valve, the higher the flow of the hydraulic oil is, if the pressure of the hydraulic oil is smaller than or equal to the pressure of the spring, the valve core falls down to seal a hydraulic oil inlet, and because the pressure of the hydraulic oil output by the oil pump is fixed, and the pressure of the hydraulic oil for the working oil cylinder is always smaller than the pressure of the hydraulic oil output by the oil pump, some hydraulic oil always flows back to the oil tank from the overflow valve during normal, The overflow valve normally works, but the overflow valve has small pressure regulating range, large pressure regulating deviation, large pressure oscillation, insensitive motion, small overload capacity and large noise.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention belongs to the technical field of mechanical engineering, and particularly relates to a hydraulic pressure control overflow valve which has the characteristics of large pressure regulating range, small pressure regulating deviation and sensitive movement.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a hydraulic pressure control overflow valve, includes the main valve body device, main valve seat is installed to main valve body top, main valve core is installed to main valve seat top, main valve core internally mounted has the main valve spring, the sealing washer is installed to main valve core both sides, the pilot valve body is installed to main valve core top, pilot valve body internally mounted has the pressure regulating nut, pilot valve body internally mounted has lock nut, pilot valve body internally mounted has the pilot valve seat, pilot valve seat internally mounted has the pilot valve core, pilot valve seat internally mounted has the pilot valve spring, pilot valve seat internally mounted has the sealing washer, pilot valve seat internally mounted has the regulation pole, the piston is used to oil is installed to one side of pilot valve seat, the sealing washer is installed to oil piston one side.
Preferably, the nut adjusts and controls the pressure of the overflow valve through pressure adjustment; simple and convenient, convenient to operate, and the pressure regulating range is big.
Preferably, the adjusting rod moves under the action of pressure and moves towards the direction of the pilot valve core; the adjusting rod and the pilot valve core are both arranged in the pilot valve body, and the movement is sensitive.
Preferably, the pilot valve spring is arranged at one end of the adjusting rod and moves together with the adjusting rod under the action of pressure; the pilot valve spring has a buffering effect on the adjusting rod.
Preferably, the oil piston is arranged at the tail end of one side of the pilot valve seat and is used for normally discharging hydraulic oil; the oil piston is simple to use and convenient to replace.
Preferably, the main valve core moves in the main valve seat under the action of pressure; because of the protection of the main valve seat, the pressure regulating deviation is small and the movement is sensitive.
Preferably, the sealing ring and the sealing ring are all O-shaped sealing rings; the O-shaped structure is rich in elasticity and rebound resilience, does not corrode a contact surface and does not pollute a medium.
Compared with the prior art, the invention has the beneficial effects that: when the pressure of the hydraulic oil exceeds the allowable working pressure, namely the pressure of the hydraulic oil is greater than the pressure of the pilot valve spring, the pilot valve core is jacked up by the hydraulic oil, the hydraulic oil flows in, flows out from one side port and flows back to the oil tank.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the cross-sectional structure of the relief valve assembly of the present invention;
FIG. 2 is a schematic cross-sectional view of a pilot valve body according to the present invention;
FIG. 3 is a schematic cross-sectional view of a pilot valve seat according to the present invention;
in the figure: 1. a pressure regulating nut; 2. adjusting a rod; 3. locking the nut; 4. a seal ring; 5. a pilot valve spring; 6. a pilot valve body; 7. a pilot valve spool; 8. a pilot valve seat; 9. a seal ring; 10. a piston for oil; 13 a main valve body; 14. a main valve seat; 15. A main valve element; 16. a main valve spring; 17. and (5) sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a hydraulic pressure control overflow valve, including the main valve body 13 device, main valve seat 14 is installed to main valve body 13 top, main valve core 15 is installed to main valve seat 14 top, main valve core 15 internally mounted has main valve spring 16, main valve core 15 both sides are installed sealing washer 17, main valve body 6 is installed to main valve core 15 top, pilot valve body 6 internally mounted has pressure regulating nut 1, pilot valve body 6 internally mounted has lock nut 3, pilot valve body 6 internally mounted has pilot valve seat 8, pilot valve seat 8 internally mounted has pilot valve case 7, pilot valve seat 8 internally mounted has pilot valve spring 5 pilot valve seat 8 internally mounted has sealing washer 4 pilot valve seat 8 internally mounted has regulation pole 2, oil piston 10 is installed to one side of pilot valve seat 8, sealing washer 9 is installed to oil piston 10 one side.
Specifically, the pressure is regulated through the nut 1, and the pressure regulation control is carried out on an overflow valve of the nut 1; is simple and convenient and is convenient to operate.
Specifically, the adjusting rod 2 moves towards the pilot valve element 7 under the action of pressure.
Specifically, the pilot valve spring 5 is arranged at one end of the adjusting rod 2 and moves together with the adjusting rod 2 under the action of pressure; the pilot valve spring 5 has a damping effect on the adjusting lever 2.
Specifically, an oil piston 10 is installed at the end of one side of the pilot valve seat 8 and used for normally discharging hydraulic oil; the oil piston 10 is simple to use and convenient to replace.
In particular, main spool 15 moves under pressure inside main valve seat 14.
Specifically, the sealing ring 17, the sealing ring 9 and the sealing ring 4 are all O-shaped sealing rings; the O-shaped structure is rich in elasticity and rebound resilience, does not corrode a contact surface and does not pollute a medium.
The working principle and the using process of the invention are as follows: the overflow valve during operation, carry out the pressure regulation through pressure regulating nut 1, drive the 5 shape changes of pilot valve spring, adjust from this, the pressure size of control hydraulic oil, when the pressure of hydraulic oil is less than work needs pressure, pilot valve core 7 is pressed at the inflow entrance of hydraulic oil by pilot valve spring 5, when the pressure of hydraulic oil exceeds its work admission pressure and is greater than pilot valve spring 5 promptly, pilot valve core 7 is by hydraulic oil jack-up, hydraulic oil flows in, flow out from one side port, flow back to the oil tank, the pressure of hydraulic oil is big more, pilot valve core 7 is got high more by hydraulic oil jack-up, if the pressure of hydraulic oil is less than or equal to pilot valve spring pressure, then pilot valve core 7 falls, seal the hydraulic oil import.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a hydraulic pressure control overflow valve which characterized in that: including the main valve body (13) device, main valve seat (14) are installed to main valve body (13) top, main valve core (15) are installed to main valve seat (14) top, main valve core (15) internally mounted has main valve spring (16), sealing washer (17) are installed to main valve core (15) one side, pilot valve body (6) are installed to main valve core (15) top, pilot valve body (6) internally mounted has pressure regulating nut (1), pilot valve body (6) internally mounted has lock nut (3), pilot valve body (6) internally mounted has pilot valve seat (8), pilot valve seat (8) internally mounted has pilot valve core (7), the internally mounted of pilot valve seat (8) has pilot valve spring (5), pilot valve seat (8) internally mounted has sealing washer (4), pilot valve seat (8) internally mounted has regulation pole (2), and one side of the pilot valve seat (8) is provided with an oil piston (10), and one side of the oil piston (10) is provided with a sealing ring (9).
2. The hydraulic pressure control relief valve according to claim 1, characterized in that: the nut (1) adjusts and controls the pressure of an overflow valve of the nut through pressure adjustment.
3. The hydraulic pressure control relief valve according to claim 1, characterized in that: the adjusting rod (2) moves under the action of pressure and moves towards the direction of the pilot valve core (7).
4. The hydraulic pressure control relief valve according to claim 1, characterized in that: the pilot valve spring (5) is arranged at one end of the adjusting rod (2) and moves together with the adjusting rod (2) under the action of pressure.
5. The hydraulic pressure control relief valve according to claim 1, characterized in that: and the oil piston (10) is arranged at the tail end of one side of the pilot valve seat (8) and is used for normally discharging hydraulic oil.
6. The hydraulic pressure control relief valve according to claim 1, characterized in that: the main valve element (15) moves in the main valve seat (14) under the action of pressure.
7. The hydraulic pressure control relief valve according to claim 1, characterized in that: and the sealing ring (17), the sealing ring (9) and the sealing ring (4) are all O-shaped sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424563.2A CN111059330A (en) | 2019-12-31 | 2019-12-31 | Hydraulic pressure control overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424563.2A CN111059330A (en) | 2019-12-31 | 2019-12-31 | Hydraulic pressure control overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059330A true CN111059330A (en) | 2020-04-24 |
Family
ID=70306232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911424563.2A Withdrawn CN111059330A (en) | 2019-12-31 | 2019-12-31 | Hydraulic pressure control overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111059330A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498278A (en) * | 2023-06-27 | 2023-07-28 | 大庆信辰油田技术服务有限公司 | Carbon dioxide huff and puff injection pump sled |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3217285A1 (en) * | 1981-06-22 | 1983-01-05 | Kabushiki Kaisha Komatsu Seisakusho, Tokyo | Back-pressure valve |
| WO2014203369A1 (en) * | 2013-06-20 | 2014-12-24 | 株式会社 島津製作所 | Pressure control valve and control valve |
| CN105443483A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Overflow valve |
| CN207526791U (en) * | 2017-09-30 | 2018-06-22 | 华晨汽车集团控股有限公司 | Controllable pilot operated compound relief valve |
| CN208595108U (en) * | 2018-08-13 | 2019-03-12 | 徐州徐工液压件有限公司 | A kind of pilot operated compound relief valve structure |
-
2019
- 2019-12-31 CN CN201911424563.2A patent/CN111059330A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3217285A1 (en) * | 1981-06-22 | 1983-01-05 | Kabushiki Kaisha Komatsu Seisakusho, Tokyo | Back-pressure valve |
| WO2014203369A1 (en) * | 2013-06-20 | 2014-12-24 | 株式会社 島津製作所 | Pressure control valve and control valve |
| CN105443483A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Overflow valve |
| CN207526791U (en) * | 2017-09-30 | 2018-06-22 | 华晨汽车集团控股有限公司 | Controllable pilot operated compound relief valve |
| CN208595108U (en) * | 2018-08-13 | 2019-03-12 | 徐州徐工液压件有限公司 | A kind of pilot operated compound relief valve structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498278A (en) * | 2023-06-27 | 2023-07-28 | 大庆信辰油田技术服务有限公司 | Carbon dioxide huff and puff injection pump sled |
| CN116498278B (en) * | 2023-06-27 | 2023-09-05 | 大庆信辰油田技术服务有限公司 | Carbon dioxide huff and puff injection pump sled |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200424 |