CN219388717U

CN219388717U - Pressure reducing valve

Info

Publication number: CN219388717U
Application number: CN202320225967.4U
Authority: CN
Inventors: 周碧英; 舒静达; 杨桂梁; 周磊挺; 江明君; 董琪
Original assignee: Ningbo Saifu Technology Co ltd
Current assignee: Ningbo Saifu Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-07-21
Anticipated expiration: 2033-02-16

Abstract

The application relates to the field of valve technology, especially, relate to a relief pressure valve, it includes valve body and valve gap, the valve gap set up in the one end of valve body, the valve body is kept away from the valve port has been seted up to the one end of valve gap, the liquid outlet hole has been seted up to the valve body periphery, be provided with elastic component and case in the valve body, the one end of elastic component with the valve gap looks butt, the other end of elastic component with the case looks butt, the case with the valve port looks butt. The application has the effect of promoting the stability of relief pressure valve.

Description

Pressure reducing valve

Technical Field

The application relates to the field of valve technology, in particular to a pressure reducing valve.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure by adjusting and automatically keeps the outlet pressure stable by depending on the energy of the medium. From the viewpoint of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, namely, by changing the throttling area, the flow speed and the kinetic energy of fluid are changed, and different pressure losses are caused, so that the aim of reducing pressure is achieved. And then, by means of the adjustment of the control and adjustment system, the fluctuation of the valve back pressure is balanced with the spring force, so that the valve back pressure is kept constant within a certain error range.

Existing pressure reducing valves generally comprise a valve body, a valve cover, a valve core and other parts. The valve body has offered a plurality of drain holes along the week side, and the valve port has been seted up to the one end of valve body, and the valve gap is installed in the one end of valve body, and the valve port is the toper, and opening part diameter reduces gradually, and the case is located the one end that the valve gap was kept away from to the valve body. When the pressure is too high, the valve core moves towards the valve cover under the action of hydraulic pressure, and when the pressure is stable, the valve core is clamped at the taper valve port.

With respect to the related art, the inventor considers that the valve core is clamped by the conical valve port, so that liquid cannot flow from the liquid outlet hole to the valve port, when the hydraulic pressure is small, a direction of moving the valve core away from the valve port may exist, and thus the liquid flows from the liquid outlet hole to the oil inlet hole, and the pressure reducing valve is unstable.

Disclosure of Invention

In order to improve stability of the pressure reducing valve, the present application provides a pressure reducing valve.

The application provides a relief pressure valve adopts following technical scheme:

the utility model provides a relief pressure valve, includes valve body and valve gap, the valve gap set up in the one end of valve body, the valve port has been seted up to the one end that the valve body kept away from the valve gap, the liquid outlet has been seted up to the valve body periphery, be provided with elastic component and case in the valve body, the one end of elastic component with the valve gap butt, the other end of elastic component with the case butt, the case with the valve port butt.

Through adopting above-mentioned technical scheme, current relief pressure valve is usually only set up the one end of valve body into the toper, through the spacing case of conical valve body, however when hydraulic pressure is abnormal, can exist the case and be located one side that the valve body is close to the valve gap for the unusual condition of relief pressure valve is provided with the elastic component in the valve body of this relief pressure valve, the one end and the valve gap butt of elastic component, the other end and the valve body butt of elastic component, when hydraulic pressure is too big, the elastic component is compressed, liquid flows out from the play liquid hole through the valve body, makes hydraulic pressure reduce. Under normal hydraulic pressure, the elastic piece rebounds to block the valve core to the valve port, so that the passage from the valve port to the liquid outlet hole is blocked, and the stability of the pressure reducing valve is improved.

Optionally, a stepped groove is formed in the inner wall of the valve body, and the valve core is abutted to the bottom wall of the stepped groove.

Through adopting above-mentioned technical scheme, offer the ladder groove at the valve body inner wall, one side and the ladder tank bottom wall butt of case, compare with the toper valve port, play spacing function to the case through ladder tank diapire for the installation of case is more stable.

Optionally, the step groove is provided as a sharp corner.

Through adopting above-mentioned technical scheme, compare in the circular arc chamfer setting of ladder groove, set up the ladder groove into the closed angle, can provide more stable support for the case to make the case more stable in the installation of valve body.

Optionally, the valve cover is in threaded engagement with the valve body.

Through adopting above-mentioned technical scheme, when valve gap and valve body pass through screw-thread fit, installation valve gap, rotate the valve gap for form screw-thread fit between valve gap and the valve body, the connected mode between valve gap and the case is simple, can also improve the sealing performance between valve gap and the case to a certain extent simultaneously.

Optionally, a sealing ring is arranged at the periphery of one end of the valve body away from the valve cover.

Through adopting above-mentioned technical scheme, through at the valve body overcoat sealing washer, improved the sealing performance when the relief pressure valve is installed, reduced the liquid and flowed out in the installation gap between valve body and other articles, caused the relief pressure valve inefficacy.

Optionally, a mounting groove is formed in the periphery of one end, far away from the valve cover, of the valve body, and the mounting groove is used for mounting the sealing ring.

Through adopting above-mentioned technical scheme, through seting up the seal groove that is used for installing the sealing washer on the valve body, provide the installation site for the sealing washer, compare in direct at the valve body periphery cover and establish the sealing washer, the mode of installing the sealing washer through seting up the seal groove is more stable.

Optionally, the valve body is located one side of going out the liquid hole is provided with the connecting block, the connecting block surface is provided with the connecting thread, the connecting block is around the periphery setting of valve body.

Through adopting above-mentioned technical scheme, set up the connecting block in the valve body periphery, the connecting block surface is provided with connecting thread, when installing this relief pressure valve, only need with the valve body with corresponding mounting point through screw-thread fit can for the installation of this relief pressure valve is more convenient simple.

Optionally, a hexagonal connecting column is disposed at one end of the valve body, which is close to the valve cover, and the hexagonal connecting column is disposed around the periphery of the valve body.

Through adopting above-mentioned technical scheme, set up the hexagonal spliced pole in the valve body periphery for when installing this relief pressure valve, can screw up the relief pressure valve through instrument such as spanner, make the installation of this relief pressure valve more simple and convenient.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the valve body of the pressure reducing valve is internally provided with the elastic piece, one end of the elastic piece is abutted with the valve cover, the other end of the elastic piece is abutted with the valve body, when the hydraulic pressure is overlarge, the elastic piece is compressed, and liquid flows out from the liquid outlet hole through the valve body, so that the hydraulic pressure is reduced. Under normal hydraulic pressure, the elastic piece rebounds to block the valve core to block the valve port, so that a passage from the valve port to the liquid outlet hole is blocked, and the stability of the pressure reducing valve is improved;

2. the inner wall of the valve body is provided with a stepped groove, one side of the valve core is abutted against the bottom wall of the stepped groove, compared with a conical valve port, the valve core is limited through the bottom wall of the stepped groove, so that the valve core is more stably installed;

3. the hexagonal connecting column is arranged on the periphery of the valve body, so that when the pressure reducing valve is installed, the pressure reducing valve can be screwed down through tools such as a spanner, and the installation of the pressure reducing valve is simpler and more convenient.

Drawings

Fig. 1 is a schematic overall structure of the present embodiment.

Fig. 2 is an exploded schematic view of the present embodiment.

Fig. 3 is a cross-sectional view of section A-A of fig. 1.

Fig. 4 is an exploded view of another view of the present embodiment.

Fig. 5 is an exploded view of the present embodiment at another view angle.

Reference numerals illustrate: 1. a valve body; 11. a valve port; 12. a liquid outlet hole; 13. a stepped groove; 14. a mounting groove; 2. a valve cover; 21. a connection part; 22. an abutting portion; 23. a thread; 24. an inner hexagonal hole; 3. an elastic member; 4. a valve core; 5. a seal ring; 6. a connecting block; 7. a connecting thread; 8. hexagonal connecting columns.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a pressure reducing valve. Referring to fig. 1 and 2, the pressure reducing valve comprises a valve body 1 and a valve cover 2 arranged at one end of the valve body 1, wherein a valve port 11 is formed in one side, far away from the valve cover 2, of the valve body 1, a plurality of liquid outlet holes 12 are formed in the peripheral side, close to one end of the valve port 11, of the valve body 1, a valve core 4 for switching the valve port 11 and an elastic piece 3 for enabling the valve core 4 to always keep a state of closing the valve port 11 are arranged in the valve body 1, one end of the elastic piece 3 is abutted against the valve cover 2, and the other end of the elastic piece 3 is abutted against the valve core 4. By arranging the elastic piece 3 in the pressure reducing valve, the valve core 4 can always keep a state of closing the valve port 11, when the hydraulic pressure is abnormal, the pressure of the valve core 4 close to the valve port 11 is continuously increased, the pressure towards one side of the valve cover 2 is caused to the valve core 4, the elastic piece 3 is compressed, the valve core 4 moves relative to the valve cover 2, so that the valve port 11 is opened, and liquid can flow out from the liquid outlet 12. When the hydraulic pressure is recovered to be normal, the pressure of the valve core 4 close to the valve port 11 is reduced, the valve core 4 moves towards the valve port 11 under the action of the resilience force of the elastic piece 3, and the valve core 4 is kept in a tight abutting state with the valve port 11 under the action of the resilience force of the elastic piece 3, so that the valve port 11 is closed.

Referring to fig. 2 and 3, in the present embodiment, the valve core 4 is in the shape of a sphere, and when the elastic member 3 is not compressed, the outer periphery of the valve core 4 is in tight contact with the wall of the liquid outlet hole 12 and the valve port 11, so that the liquid outlet hole 12 and the valve port 11 are both closed.

The inner wall of the valve body 1 is provided with a stepped groove 13, and the stepped groove 13 is positioned between the liquid outlet 12 and the valve port 11 and is communicated with the valve port 11. The stepped groove 13 is provided with a sharp corner, and the periphery of the valve core 4 is abutted against the sharp corner. Through seting up step groove 13 at valve body 1 inner wall to set up step groove 13 into the closed angle, make case 4 tightly support with the closed angle, provide spacingly for case 4, compare in circular arc chamfer setting, the setting of closed angle makes case 4 and valve port 11 can be closed better, thereby has increased the sealing performance of this relief pressure valve.

In another embodiment, the valve body 1 tapers in diameter toward the valve port 11, and the opening at the valve port 11 is smaller in diameter than the valve spool 4 so that the valve spool 4 does not fall out of the valve port 11. The latter valve element 4 has an outer periphery directly abutting against the inner wall of the valve body 1, and has a sealing performance inferior to that of the former, and thus the former is shown as an example in the present embodiment.

Referring to fig. 4, the valve cover 2 is engaged with the valve body 1 by a screw 23, and one side of the valve cover 2 is flush with the valve body 1. The valve cover 2 includes a connecting portion 21 and an abutting portion 22, and the abutting portion 22 is provided at one end of the connecting portion 21. The connecting portion 21 is provided with a thread 23 on the outer periphery, and the inner wall of the valve body 1 is provided with a thread 23 groove for connecting the thread 23. The inner hexagonal hole 24 is formed in one side, far away from the connecting portion 21, of the abutting portion 22, and when the valve cover 2 is mounted on the valve body 1 through the hexagonal tool by forming the inner hexagonal hole 24, the valve cover 2 is mounted more conveniently and more conveniently in a labor-saving mode. In the present embodiment, the abutting portion 22 is integrally formed with the connecting portion 21, and in other embodiments, the abutting portion 22 may be welded to the connecting portion 21.

Referring to fig. 5, the valve body 1 is provided with a sealing ring 5 at an end remote from the valve cover 2. The valve body 1 is arranged between the valve port 11 and the liquid outlet 12, a mounting groove 14 is formed, the mounting groove 14 is formed in the periphery of the valve body 1, and the sealing ring 5 is embedded in the mounting groove 14. Through setting up sealing washer 5 for when cooperating this relief pressure valve with other articles, the leakproofness of valve body 1 with other articles is stronger, reduces liquid and flows from valve body 1 periphery. The sealing ring 5 is installed by arranging the installation groove 14, the sealing ring 5 is limited, and the sliding of the sealing ring 5 on the periphery of the valve body 1 is reduced, so that the installation of the sealing ring 5 on the valve body 1 is more stable.

The valve body 1 is provided with connecting block 6 between liquid outlet 12 and valve gap 2, and connecting block 6 sets up around valve body 1 periphery. In the present embodiment, the connection block 6 is integrally formed with the valve body 1, and in other embodiments, the connection block 6 may be welded to the valve body 1. The connecting block 6 outer peripheral face is provided with connecting screw thread 7, through setting up connecting block 6 and connecting screw thread 7, when this relief pressure valve body 1 is installed, only need screw in the cooperation article with valve body 1 for this relief pressure valve's installation is more convenient, simple.

One end of the valve body 1, which is close to the valve cover 2, is provided with a hexagonal connecting column 8. Specifically, the hexagonal connection post 8 is disposed around the outer periphery of the valve body 1, and in this embodiment, the hexagonal connection post 8 is integrally formed with the valve body 1, and in other embodiments, the hexagonal connection post 8 may be welded to the valve body 1. Through setting up hexagonal spliced pole 8 for when installing this relief pressure valve, can exert force to hexagonal spliced pole 8 through instrument such as spanner, make the installation of this relief pressure valve more laborsaving.

The implementation principle of the pressure reducing valve in the embodiment of the application is as follows: when the hydraulic pressure is too high, the pressure of the valve core 4 close to the valve port 11 is continuously increased, the pressure towards one side of the valve cover 2 is caused to the valve core 4, the elastic piece 3 is compressed, the valve core 4 moves towards the direction close to the valve cover 2, the valve port 11 and the liquid outlet are opened, and at the moment, the liquid can flow out from the liquid outlet 12. When the hydraulic pressure is recovered to be normal, the pressure of the valve core 4 close to the valve port 11 is reduced, the valve core 4 moves towards the valve port 11 under the action of the resilience force of the elastic piece 3, and the valve core 4 is kept in a tight abutting state with the valve port 11 under the action of the resilience force of the elastic piece 3, so that the valve port 11 is closed.

In addition, set up hexagonal spliced pole 8 and connecting block 6 in valve body 1 periphery, all can make this relief pressure valve and the installation of cooperation article more convenient, simple.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A pressure relief valve, characterized in that: including valve body (1) and valve gap (2), valve gap (2) set up in the one end of valve body (1), valve body (1) are kept away from valve port (11) have been seted up to the one end of valve gap (2), liquid outlet hole (12) have been seted up to valve body (1) periphery, be provided with elastic component (3) and case (4) in valve body (1), the one end of elastic component (3) with valve gap (2) looks butt, the other end of elastic component (3) with case (4) looks butt, case (4) with valve port (11) looks butt.

2. The pressure relief valve of claim 1, wherein: the inner wall of the valve body (1) is provided with a stepped groove (13), and the valve core (4) is abutted with the bottom wall of the stepped groove (13).

3. The pressure relief valve of claim 2, wherein: the stepped groove (13) is arranged as a sharp corner.

4. The pressure relief valve of claim 1, wherein: the valve cover (2) is matched with the threads (23) of the valve body (1).

5. The pressure relief valve of claim 1, wherein: and a sealing ring (5) is arranged on the periphery of one end, far away from the valve cover (2), of the valve body (1).

6. The pressure relief valve of claim 5, wherein: the valve body (1) is far away from the periphery of one end of the valve cover (2) is provided with a mounting groove (14), and the mounting groove (14) is used for mounting the sealing ring (5).

7. The pressure relief valve of claim 1, wherein: the valve body (1) is located one side of the liquid outlet hole (12) is provided with a connecting block (6), the surface of the connecting block (6) is provided with connecting threads (7), and the connecting block (6) surrounds the periphery of the valve body (1).

8. The pressure relief valve of claim 1, wherein: and a hexagonal connecting column is arranged at one end of the valve body, which is close to the valve cover, and the hexagonal connecting column is arranged around the periphery of the valve body.