CN111173939A - Hydraulic control one-way valve - Google Patents
Hydraulic control one-way valve Download PDFInfo
- Publication number
- CN111173939A CN111173939A CN202010096965.0A CN202010096965A CN111173939A CN 111173939 A CN111173939 A CN 111173939A CN 202010096965 A CN202010096965 A CN 202010096965A CN 111173939 A CN111173939 A CN 111173939A
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- Prior art keywords
- oil
- hole
- spring
- plug
- piston
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to a hydraulic valve, in particular to a hydraulic control one-way valve, which comprises a first spring, a plug, a second spring and a valve body, wherein the valve body is provided with a second oil hole, a second oil cavity, a first oil cavity and a first oil hole which are sequentially communicated; the plug and the second spring are both arranged in the second oil cavity, and the second spring is used for tightly pressing the plug at the communication part of the second oil cavity and the first oil cavity; one end activity of case is inserted in first oil pocket, and corresponding with the end cap, and the other end of case is equipped with the piston ring, and the piston ring slides and inserts in the piston hole, and the case is used for pushing open the end cap, and first spring activity is inserted on the case, and the one end of first spring is located the case, and the other end is located first oil pocket, and first spring is used for reseing of case. The hydraulic control one-way valve has the advantages of small volume, simple structure, low cost, good pressure maintaining performance and no leakage.
Description
Technical Field
The invention relates to a hydraulic valve, in particular to a hydraulic control one-way valve.
Background
Hydraulic fixture usually needs the pressurize, need prevent simultaneously that the sudden failure from leading to the phenomenon that the work piece dropped, consequently produced the check valve, but under this kind of operating mode can't direct application to ordinary check valve, because the check valve can not realize the circulation, produced the pilot operated check valve to this kind of condition, but present pilot operated check valve structure is complicated, bulky, the spare part is many, with high costs.
Disclosure of Invention
In order to solve the problems, the invention provides a hydraulic control one-way valve which is small in size, few in parts, simple in structure and low in cost, and the specific technical scheme is as follows:
the hydraulic control one-way valve comprises a first spring, a plug and a second spring, and further comprises a valve body, wherein a second oil hole, a second oil cavity, a first oil cavity and a first oil hole which are sequentially communicated are formed in the valve body; the plug and the second spring are both arranged in the second oil cavity, and the second spring is used for tightly pressing the plug at the communication position of the second oil cavity and the first oil cavity; the valve core, the one end activity of case is inserted in the first oil pocket, and with the end cap is corresponding, the other end of case is equipped with the piston ring, the piston ring slides and inserts in the piston hole, the case is used for pushing open the end cap, first spring activity is inserted on the case, the one end of first spring is located on the case, the other end is located on the first oil pocket, first spring is used for the reseing of case.
By adopting the technical scheme, the hydraulic control check valve is realized by arranging the check valve and the single-action hydraulic cylinder, the structure is greatly simplified, the number of parts is small, the structure is simple, the installation and the maintenance are convenient, and the cost is low.
The hydraulic control one-way valve is installed between the hydraulic fixture and the electromagnetic valve, the first oil hole is connected with the electromagnetic valve, the second oil hole is communicated with the oil inlet hole of the hydraulic fixture, and the oil outlet hole of the hydraulic fixture is connected with the third oil hole and the electromagnetic valve respectively. When the electromagnetic valve is in a clamping state, hydraulic oil enters the first oil cavity from the first oil hole, then jacks the plug and enters the second oil cavity, then exits from the second oil hole and enters the hydraulic clamp, if power is off, no hydraulic oil enters the first oil hole, pressure is reduced, the plug seals the second oil cavity under the action of the second spring, the hydraulic oil in the second oil cavity does not flow back, pressure maintaining is achieved, and a workpiece is prevented from falling. When the electromagnetic valve is in a loosened state, hydraulic oil in the oil outlet of the hydraulic fixture enters the piston hole to push the piston to move towards the plug, and the plug is jacked open by the valve core to enable the first oil cavity and the second oil cavity to be communicated, so that the hydraulic fixture is reset.
Further, a communication hole is formed between the first oil chamber and the second oil chamber, and the diameter of the communication hole is smaller than the diameters of the first oil chamber and the second oil chamber.
By adopting the technical scheme, the diameter of the communication hole is small, the pressure difference between the second oil cavity and the first oil cavity can be increased, and the reliability of the one-way valve is improved.
Furthermore, the oil valve further comprises a guide ring, the guide ring is fixed in the first oil cavity, the valve core is inserted on the guide ring in a sliding mode, and the first spring is located inside the guide ring.
Through adopting above-mentioned technical scheme, the guide ring is convenient to process alone, because the guide ring is circular, and is more convenient for square valve body processing, can reduce the processing cost.
The piston ring is inserted into the piston hole in a sliding mode, the air outlet groove is communicated with the air hole, a fourth oil hole is formed in the side face of the valve sleeve, and the fourth oil hole is communicated with the third oil hole.
Through adopting above-mentioned technical scheme, the processing of piston hole is made things convenient for to the valve barrel, because circular during the valve body, processing is convenient, has simplified the processing of valve body, has reduced the processing cost.
The plug is further provided with a guide post, a second guide hole is formed in the guide post, the plug is inserted in the second guide hole in a sliding mode, and the second spring is movably inserted in the guide post.
By adopting the technical scheme, the plug screw facilitates the installation of the plug.
Furthermore, an end face sealing ring is arranged on the plug and used for sealing the second oil cavity.
Through adopting above-mentioned technical scheme, the sealing performance is improved to the end face sealing washer to the pressurize performance of hydraulically controlled check valve has been improved, the leakage is reduced.
Further, the first oil hole, the second oil hole, the air hole and the third oil hole are all located on the same side face of the valve body.
By adopting the technical scheme, the oil inlet hole and the hole are both positioned at the same side, so that the hydraulic control one-way valve is greatly convenient to install, the arrangement of pipelines is reduced, the installation efficiency is improved, and the maintenance is convenient.
Compared with the prior art, the invention has the following beneficial effects:
the hydraulic control one-way valve provided by the invention has the advantages of small volume, few parts, simple structure, low cost, good pressure maintaining performance, no leakage and convenience in installation.
Drawings
FIG. 1 is a front view of a pilot operated check valve;
FIG. 2 is a cross-sectional view of a pilot operated check valve;
FIG. 3 is a cross-sectional view of the valve body;
FIG. 4 is an exploded view of the valve spool, first spring, and guide ring;
fig. 5 is a schematic structural view of the valve sleeve;
fig. 6 is an exploded structure diagram of the plug, the end face seal ring, the second spring and the screw plug.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1 to 6, the pilot operated check valve comprises a first spring 32, a plug 4, a second spring 52, and a valve body 1, wherein the valve body 1 is provided with a second oil hole 12, a second oil chamber 15, a first oil chamber 13, and a first oil hole 11 which are sequentially communicated, the valve body 1 is further provided with a piston hole 71, a third oil hole 17, and an air hole 19, the piston hole 71 is communicated with the first oil chamber 13, the third oil hole 17 is communicated with one end of the piston hole 71 away from the first oil chamber 13, and the air hole 19 is communicated with the other end of the piston hole 71; the plug 4, the plug 4 and the second spring 52 are all arranged in the second oil cavity 15, and the second spring 52 is used for pressing the plug 4 at the communication position of the second oil cavity 15 and the first oil cavity 13; one end of the valve core 22 is movably inserted into the first oil cavity 13 and corresponds to the plug 4, the other end of the valve core 22 is provided with a piston ring 23, the piston ring 23 is slidably inserted into the piston hole 71, the valve core 22 is used for ejecting the plug 4, the first spring 32 is movably inserted onto the valve core 22, one end of the first spring 32 is located on the valve core 22, the other end of the first spring is located on the first oil cavity 13, and the first spring 32 is used for resetting the valve core 22.
The hydraulic control check valve has the advantages that the function of the hydraulic control check valve is realized by arranging the check valve and the single-acting hydraulic cylinder, the structure is greatly simplified, the number of parts is small, the structure is simple, the installation and the maintenance are convenient, and the cost is low.
Specifically, the piston ring 23 is provided with a seal ring. The air hole 71 is used for exhausting or intaking air when the piston ring 23 moves, and the condition that the piston ring 23 cannot move in place due to pressure is avoided.
A communication hole 14 is provided between the first oil chamber 13 and the second oil chamber 15, and the diameter of the communication hole 14 is smaller than the diameters of the first oil chamber 13 and the second oil chamber 15. One end of the valve core 22 is provided with a valve needle 21, the valve needle 21 is movably positioned in the communication hole 14, and the valve needle 21 is used for ejecting the plug 4. The first spring 32 is movably inserted on the valve needle 21, one end of the first spring 32 is pressed on the end part of the valve core 22, and the other end is pressed on the bottom of the second oil chamber 15.
The communication hole 14 has a small diameter, and the pressure difference between the second oil chamber 15 and the first oil chamber 13 can be increased, thereby improving the reliability of the check valve.
The oil pump further comprises a guide ring 31, the guide ring 31 is provided with a first guide hole and a spring hole which are coaxial and communicated with each other, the first guide hole and the spring hole are stepped holes, the guide ring 31 is fixed in the first oil chamber 13, the valve core 22 is inserted in the first guide hole of the guide ring 31 in a sliding mode, the first spring 32 is located in the spring hole of the guide ring 31, and the end portion of the first spring 32 is pressed at the bottom of the spring hole. The outer circular surface and the inner circular surface of the guide ring 31 are provided with sealing rings. The guide ring 31 is convenient to process independently, and because the guide ring 31 is circular, the processing is more convenient for the square valve body 1, and the processing cost can be reduced.
The oil-gas separating valve further comprises a valve sleeve 7, one end of the valve sleeve 7 is fixed in the first oil hole 11 in a sealing mode, one end of the valve sleeve 7 is provided with a piston hole 71 and an air outlet groove 72, the piston ring 23 is inserted in the piston hole 71 in a sliding mode, the air outlet groove 72 is communicated with the air hole 19, the side face of the valve sleeve 7 is provided with a fourth oil hole 73, and the fourth oil hole 73 is communicated with the third oil hole 17. The valve body 1 is mounted at the end of the first oil chamber 13 by means of a screw thread and sealed by means of a sealing ring. An annular oil inlet groove 18 is further formed in the first oil chamber 13, the oil inlet groove 18 is communicated with the third oil hole 17 and the fourth oil hole 73, the oil inlet groove 18 facilitates installation of the valve sleeve 7, and it is not necessary to ensure that the fourth oil hole 73 is aligned with the third oil hole 17.
And a limiting column is arranged on the piston ring 23, and the limiting column enables the piston ring 23 to be positioned above the third oil hole 17 to form an oil inlet cavity and reduce the starting pressure of the piston ring 23. The valve sleeve 7 facilitates the processing of the piston hole 71, and because the valve body 1 is circular, the processing is convenient, the processing of the valve body 1 is simplified, and the processing cost is reduced.
The plug device further comprises a plug screw 6, a guide post 61 is arranged on the plug screw 6, a second guide hole 62 is formed in the guide post 61, the plug 4 is inserted into the second guide hole 62 in a sliding mode, and the second spring 52 is movably inserted into the guide post 61. The screw plug 6 is provided with two mounting holes, the screw plug is mounted through the clamp spring clamp and does not protrude out of the surface of the valve body 1, the size of the hydraulic control one-way valve is reduced, and the screw plug 6 is mounted in the first oil cavity 13 through threads and sealed through a sealing ring. The plug screw 6 facilitates the installation of the plug 4.
The end cap 4 is provided with a sealing groove 41 on the surface opposite to the communication hole 14, an end face density ring 51 is arranged in the sealing groove 41, and the end face density ring 51 is used for sealing the second oil chamber 15. The end face density ring 51 improves the sealing performance, so that the pressure maintaining performance of the hydraulic control one-way valve is improved, and the leakage is reduced. The seal groove 41 is used to fix the end seal 51.
The first oil hole 11, the second oil hole 12, the air hole 19 and the third oil hole 17 are all located on the same side of the valve body 1. The oil inlet hole and the hole are located on the same side, so that the installation of the hydraulic control one-way valve is greatly facilitated, the arrangement of pipelines is reduced, the installation efficiency is improved, and the maintenance is convenient.
The hydraulic control one-way valve is installed between the hydraulic fixture and the electromagnetic valve, the first oil hole 11 is connected with the electromagnetic valve, the second oil hole 12 is communicated with the oil inlet hole of the hydraulic fixture, and the oil outlet hole of the hydraulic fixture is respectively connected with the third oil hole 17 and the electromagnetic valve. When the electromagnetic valve is in a clamping state, hydraulic oil enters the first oil cavity 13 from the first oil hole 11, then the plug 4 is pushed open to enter the second oil cavity 15, then the hydraulic oil exits from the second oil hole 12 and enters the hydraulic clamp, if the power is off, no hydraulic oil enters the first oil hole 11, the pressure is reduced, the plug 4 seals the second oil cavity 15 under the action of the second spring 52, the hydraulic oil in the second oil cavity 15 does not flow back, the pressure maintaining is realized, and the workpiece is prevented from falling. When the electromagnetic valve is in a released state, hydraulic oil in the oil outlet of the hydraulic clamp enters the piston hole 71 to push the piston ring 23 to move towards the plug 4, and the plug 4 is pushed open by the valve core 22 to enable the first oil chamber 13 and the second oil chamber 15 to be communicated, so that the hydraulic clamp is reset.
The hydraulic control one-way valve provided by the invention has the advantages of small volume, few parts, simple structure, low cost, good pressure maintaining performance, no leakage, convenience in installation, contribution to the separation of clamps of a double-acting loop, shortening of clamping time, energy conservation and safety.
Claims (7)
1. The hydraulic control one-way valve comprises a first spring, a plug and a second spring, and is characterized by also comprising
The oil cylinder comprises a valve body, wherein a second oil hole, a second oil cavity, a first oil cavity and a first oil hole which are sequentially communicated are formed in the valve body, a piston hole, a third oil hole and an air hole are further formed in the valve body, the piston hole is communicated with the first oil cavity, the third oil hole is communicated with one end, far away from the first oil cavity, of the piston hole, and the air hole is communicated with the other end of the piston hole;
the plug and the second spring are both arranged in the second oil cavity, and the second spring is used for tightly pressing the plug at the communication position of the second oil cavity and the first oil cavity;
the valve core, the one end activity of case is inserted in the first oil pocket, and with the end cap is corresponding, the other end of case is equipped with the piston ring, the piston ring slides and inserts in the piston hole, the case is used for pushing open the end cap, first spring activity is inserted on the case, the one end of first spring is located on the case, the other end is located on the first oil pocket, first spring is used for the reseing of case.
2. The pilot-operated check valve according to claim 1, wherein a communication hole having a diameter smaller than that of the first oil chamber and the second oil chamber is provided between the first oil chamber and the second oil chamber.
3. The pilot-controlled check valve as recited in claim 1, further comprising a pilot ring fixed in the first oil chamber, the spool being slidably inserted on the pilot ring, the first spring being located inside the pilot ring.
4. The pilot-controlled check valve as recited in claim 1 or 3, further comprising a valve sleeve, one end of which is sealingly fixed in the first oil hole, one end of which is provided with a piston hole in which the piston ring is slidably inserted and an air outlet groove communicating with the air hole, and a side surface of which is provided with a fourth oil hole communicating with the third oil hole.
5. The pilot-controlled check valve according to claim 1, further comprising a plug screw, wherein the plug screw is provided with a guide post, the guide post is provided with a second guide hole, the plug is slidably inserted into the second guide hole, and the second spring is movably inserted into the guide post.
6. A pilot-controlled check valve as claimed in claim 1 or 5, wherein the plug is provided with an end face seal ring for sealing the second oil chamber.
7. The pilot-operated check valve according to claim 1, wherein the first oil hole, the second oil hole, the air hole, and the third oil hole are located on the same side surface of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010096965.0A CN111173939A (en) | 2020-02-17 | 2020-02-17 | Hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010096965.0A CN111173939A (en) | 2020-02-17 | 2020-02-17 | Hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111173939A true CN111173939A (en) | 2020-05-19 |
Family
ID=70651370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010096965.0A Pending CN111173939A (en) | 2020-02-17 | 2020-02-17 | Hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111173939A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864268A (en) * | 2021-09-10 | 2021-12-31 | 日照海卓液压有限公司 | Integral plug-in type zero-leakage low-energy-level steady-state closing proportion pilot one-way throttle valve |
-
2020
- 2020-02-17 CN CN202010096965.0A patent/CN111173939A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864268A (en) * | 2021-09-10 | 2021-12-31 | 日照海卓液压有限公司 | Integral plug-in type zero-leakage low-energy-level steady-state closing proportion pilot one-way throttle valve |
| CN113864268B (en) * | 2021-09-10 | 2024-01-30 | 日照海卓液压有限公司 | Integral plug-in zero-leakage low-energy-level steady-state closing proportion pilot one-way throttle valve |
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