CN216666069U - Gasket pressure regulating type overflow valve - Google Patents
Gasket pressure regulating type overflow valve Download PDFInfo
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- CN216666069U CN216666069U CN202123016610.5U CN202123016610U CN216666069U CN 216666069 U CN216666069 U CN 216666069U CN 202123016610 U CN202123016610 U CN 202123016610U CN 216666069 U CN216666069 U CN 216666069U
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Abstract
The utility model relates to the technical field of proportional control hydraulic elements, in particular to a gasket pressure regulating overflow valve which comprises a valve sleeve, a valve core, a valve rod and a poppet valve seat, wherein the valve core and the valve rod are arranged in an inner cavity of the valve sleeve; the elastic assembly comprises a spring and a gasket, the spring and the gasket are sleeved outside the valve rod, two ends of the spring are respectively abutted to the gasket and the inner end of the valve element, and the gasket is abutted to the protruding portion of the valve element. Compared with the prior art, the gasket pressure regulating overflow valve provided by the utility model has the advantages that the compression amount of the spring is changed by replacing the gasket in the valve shell, so that the set pressure of the overflow valve is regulated, the cavitation phenomenon is avoided, the response speed is high, and the performance is reliable and stable.
Description
Technical Field
The utility model relates to the technical field of proportional control hydraulic elements, in particular to a gasket pressure regulating overflow valve.
Background
The direct-acting overflow valve can be divided into a seat valve and a slide valve according to a valve core structure, the seat valve can be divided into a ball valve and a cone valve, the cone valve has good sealing performance, but the contact attraction between the valve core and the valve seat is large, and the direct-acting overflow valve is often used as a pressure regulating valve, a remote pressure regulating valve and a high-pressure valve in a pilot overflow valve. The working mode of the overflow valve is as follows: when the oil pressure of the oil inlet connected from the system is not high, the cone valve core is pressed on the valve seat by the spring, and the valve port is closed. When the oil pressure of the inlet rises to overcome the resistance of the spring, the cone valve is pushed open, the valve port is opened, oil flows in from the oil inlet and then flows back to the oil tank from the oil return port, and the oil inlet pressure cannot rise continuously. When the flow through the overflow valve changes, the valve port opening, namely the spring compression, also changes thereupon, through the precompression volume of pressure regulating screw regulation spring to the size of setting overflow valve overflow pressure value, nevertheless easily cause the leakage phenomenon, poor stability.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a gasket pressure regulating overflow valve.
The technical scheme adopted by the utility model is as follows: the utility model provides a gasket pressure regulating formula overflow valve, the key lies in: the valve comprises a valve sleeve, a valve core, a valve rod and a poppet valve seat, wherein the valve core and the valve rod are arranged in an inner cavity of the valve sleeve, the poppet valve seat is inserted into an opening of the valve sleeve, the inner end of the poppet valve seat is abutted against the outer end of the valve core, and the inner end of the valve core is connected with the valve rod through an elastic component; the elastic assembly comprises a spring and a gasket, the spring and the gasket are sleeved outside the valve rod, two ends of the spring are respectively abutted to the gasket and the inner end of the valve element, and the gasket is abutted to the protruding portion of the valve element. The effect of this scheme is through the precompression volume that the gasket of reloading different thickness just can adjust the spring to the size of setting overflow pressure value reaches the effect of pressure regulating.
Preferably, the valve core is a conical valve core, the inner end of the poppet valve seat abuts against a conical surface of the conical valve core, the head of the stem of the valve stem is inserted into the conical valve core and is in sliding contact with the conical valve core, and the conical valve core abuts against the spring. The effect of this scheme is under certain pressure, and the sealed face that forms between case and the poppet valve seat does not have the clearance, and the cone valve core realizes opening and close of valve port under the effect of spring.
Preferably, an oil outlet and a pressure relief opening are formed in the length direction of the valve sleeve, and the oil outlet is close to the opening of the valve sleeve.
Preferably, the valve rod is of a hollow structure. The effect of this scheme is to make liquid flow into the valve rod from the valve core mesopore, and then flow into the bottom from the valve rod mesopore, then produce the reaction force on the valve core by the valve rod.
Preferably, a circle of annular protrusion is arranged on the inner end face of the valve core, a circle of stop protrusion is correspondingly arranged on the inner wall of the valve sleeve, the annular protrusion is in floating contact with the stop protrusion, and the outer wall of the valve core is in sliding contact with the stop protrusion. The effect of this scheme is that prevents that the case from producing the extrusion force to the poppet valve seat under the spring action.
Preferably, the oil outlet and the pressure relief opening are both provided in plurality. The effect of this scheme is the flow and the pressure release flow that improve the output.
Has the advantages that: compared with the prior art, the gasket pressure regulating overflow valve provided by the utility model has the advantages that the compression amount of the spring is changed by replacing the gasket in the valve shell, so that the set pressure of the overflow valve is regulated, the cavitation is avoided, the response speed is high, and the performance is reliable and stable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view a-a of fig. 1.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, a gasket pressure-regulating overflow valve comprises a valve sleeve 1, a valve core 2, a valve rod 3 and a poppet valve seat 4, wherein an oil outlet 6 and a pressure relief port 7 are formed in the length direction of the valve sleeve 1, the oil outlet 6 and the pressure relief port 7 are both provided in plurality, the oil outlet 6 is arranged close to an opening of the valve sleeve 1, the valve core 2 and the valve rod 3 are arranged in an inner cavity of the valve sleeve 1, the poppet valve seat 4 is inserted into the opening of the valve sleeve 1, the inner end of the poppet valve seat 4 is abutted against the outer end of the valve core 2, and the inner end of the valve core 2 is connected with the valve rod 3 through an elastic component 5; the elastic component 5 comprises a spring 51 and a gasket 52 which are sleeved outside the valve rod 3, two ends of the spring 51 are respectively abutted with the gasket 52 and the inner end of the valve core 2, the gasket 52 is abutted with the protruding part of the valve core 2, and the valve rod 3 is of a hollow structure.
Example 2
As shown in fig. 1, a gasket pressure-regulating overflow valve comprises a valve sleeve 1, a valve core 2, a valve rod 3 and a poppet valve seat 4, wherein an oil outlet 6 and a pressure relief port 7 are formed in the length direction of the valve sleeve 1, the oil outlet 6 and the pressure relief port 7 are both multiple, the pressure relief ports 7 and the oil outlets are annularly arranged, the oil outlet 6 is arranged close to an opening of the valve sleeve 1, the valve core 2 and the valve rod 3 are arranged in an inner cavity of the valve sleeve 1, the poppet valve seat 4 is inserted into the opening of the valve sleeve 1, the inner end of the poppet valve seat 4 is abutted against the outer end of the valve core 2, and the inner end of the valve core 2 is connected with the valve rod 3 through an elastic component 5; the elastic component 5 comprises a spring 51 and a gasket 52 which are sleeved outside the valve rod 3, two ends of the spring 51 are respectively abutted with the gasket 52 and the inner end of the valve core 2, the gasket 52 is abutted with the convex part of the valve core 2, and the valve rod 3 is of a hollow structure;
the valve core 2 is a conical valve core, the inner end of the poppet valve seat 4 is abutted with the conical surface of the conical valve core, the head part of the valve rod 3 is inserted into the conical valve core and is in sliding contact with the conical valve core, and the conical valve core is abutted with the spring 51; the inner end face of the valve core 2 is provided with a circle of annular protrusion 8, the inner wall of the valve sleeve 1 is correspondingly provided with a circle of stop protrusion 9, the annular protrusion 8 is in floating contact with the stop protrusion 9, and the outer wall of the valve core 2 is in sliding contact with the stop protrusion 9.
The working principle is as follows: when hydraulic system starts, liquid flows into the valve rod by the spool mesopore earlier, the mesopore from the valve rod flows into the valve casing bottom again, the liquid that flows into the valve casing bottom can produce the reaction force on the spool through the valve rod, pressure rise to the settlement pressure when the valve port, on the one hand the cone valve core moves to the pressure release mouth, gradually open the pressure release, on the other hand because valve rod bottom area is big than valve port area, the power that leads to the valve rod to receive is greater than the spring force, and then the valve rod moves to cone valve core direction, lead to the spring further compression, pressure rise once more when the valve port, when being greater than the compression capacity of spring, promote the whole backward movement of valve core valve rod, the pressure release mouth is opened completely, quick pressure release makes valve port pressure reduce, thereby the effect of quick steady voltage is played in spring promotion cone valve core closure.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and that those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a gasket pressure regulating formula overflow valve which characterized in that: the valve comprises a valve sleeve (1), a valve core (2), a valve rod (3) and a poppet valve seat (4), wherein the valve core (2) and the valve rod (3) are arranged in an inner cavity of the valve sleeve (1), the poppet valve seat (4) is inserted into an opening of the valve sleeve (1), the inner end of the poppet valve seat (4) is abutted against the outer end of the valve core (2), and the inner end of the valve core (2) is connected with the valve rod (3) through an elastic component (5); the elastic assembly (5) comprises a spring (51) and a gasket (52) which are sleeved outside the valve rod (3), two ends of the spring (51) are respectively abutted to the gasket (52) and the inner end of the valve core (2), and the gasket (52) is abutted to the protruding part of the valve core (2).
2. The gasket pressure regulating overflow valve of claim 1, wherein: the valve core (2) is a conical valve core, the inner end of the poppet valve seat (4) is abutted against the conical surface of the conical valve core, the head part of the valve rod (3) is inserted into the conical valve core and is in sliding contact with the conical valve core, and the conical valve core is abutted against the spring (51).
3. The gasket pressure regulating overflow valve of claim 2, wherein: an oil outlet (6) and a pressure relief opening (7) are formed in the length direction of the valve sleeve (1), and the oil outlet (6) is close to the opening of the valve sleeve (1).
4. The gasket pressure regulating overflow valve of claim 2, wherein: the valve rod (3) is of a hollow structure.
5. The gasket pressure regulating overflow valve of claim 2, wherein: the inner end face of the valve core (2) is provided with a circle of annular protrusion (8), the inner wall of the valve sleeve (1) is correspondingly provided with a circle of stop protrusion (9), the annular protrusion (8) is in floating contact with the stop protrusion (9), and the outer wall of the valve core (2) is in sliding contact with the stop protrusion (9).
6. The gasket pressure regulating overflow valve of claim 3, wherein: the oil outlets (6) and the pressure relief ports (7) are multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123016610.5U CN216666069U (en) | 2021-12-03 | 2021-12-03 | Gasket pressure regulating type overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123016610.5U CN216666069U (en) | 2021-12-03 | 2021-12-03 | Gasket pressure regulating type overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216666069U true CN216666069U (en) | 2022-06-03 |
Family
ID=81788476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123016610.5U Active CN216666069U (en) | 2021-12-03 | 2021-12-03 | Gasket pressure regulating type overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216666069U (en) |
-
2021
- 2021-12-03 CN CN202123016610.5U patent/CN216666069U/en active Active
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