CN210266049U - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
- Publication number
- CN210266049U CN210266049U CN201920912605.6U CN201920912605U CN210266049U CN 210266049 U CN210266049 U CN 210266049U CN 201920912605 U CN201920912605 U CN 201920912605U CN 210266049 U CN210266049 U CN 210266049U
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- valve
- valve rod
- pressure reducing
- valve body
- pressure
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Abstract
The utility model provides a pressure reducing valve, including valve body, valve gap, valve rod, the valve body has entrance point and exit end, and the valve rod is radially located to the valve body entrance point, and entrance point rivers impact force radially acts on the valve rod. The utility model has the advantages that: the utility model discloses a valve body import and the ingenious design of valve rod production side impact force for valve rod import end pressure can reach balance, effectively reduces because the influence of the thrust that the pressure increase of import department produced the valve rod to control accuracy. Make the utility model discloses pressure control is even, the precision is high.
Description
Technical Field
The utility model belongs to the technical field of the valve, especially, relate to a relief pressure valve.
Background
The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range. The inlet end of the traditional pressure reducing valve directly generates positive impact force on the valve rod, so that the control precision of the valve rod is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a relief pressure valve that valve entrance point pressure keeps balance is provided.
The utility model discloses a realize through following technical scheme:
a pressure reducing valve comprises a valve body, a valve cover and a valve rod, wherein the valve body is provided with an inlet end and an outlet end, the inlet end of the valve body is arranged in the radial direction of the valve rod, and the water flow impact force of the inlet end acts on the valve rod in the radial direction.
The valve rod is provided with a valve rod sealing sleeve, and the valve rod is provided with a supporting part for supporting the valve rod sealing sleeve.
And a valve rod bushing is sleeved on the upper part of the valve rod sealing sleeve, which is positioned on the valve rod.
The outer diameter of one end of the valve rod bushing close to the valve rod sealing sleeve is gradually increased from top to bottom to form an inclined plane for buffering water flow.
The valve cover is connected with a cover cap, the valve rod penetrates through the cover cap, a spring is arranged in the cover cap, and the spring is sleeved outside the valve rod.
The valve body is internally provided with a piston which reciprocates in the valve body, the piston is in linkage fit with the valve rod, the piston penetrates through the valve cover, and the upper end of the piston acts on the spring.
The lower end part of the valve rod is provided with a pressure bearing part which is in sealing fit with the valve body and reciprocates up and down in the valve body.
An L-shaped flow passage or a T-shaped flow passage is arranged in the valve body.
The cap is connected with an adjusting screw which acts on the spring.
The utility model has the advantages that: the utility model discloses a valve body import and the ingenious design of valve rod production side impact force for valve rod import end pressure can reach balance, effectively reduces because the influence of the thrust that the pressure increase of import department produced the valve rod to control accuracy. Make the utility model discloses pressure control is even, the precision is high.
Drawings
Fig. 1 is a sectional view of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
Examples
The pressure reducing valve shown in fig. 1 comprises a valve body 1, a valve cover 7 and a valve rod 3, wherein the valve body 1 is provided with an inlet end and an outlet end, the inlet end of the valve body 1 is arranged in the radial direction of the valve rod 3, and the impact force of water flow at the inlet end acts on the valve rod 3 in the radial direction. The ingenious design that valve body import and valve rod produced the side impact force for valve rod import end pressure can reach balance, effectively reduces because the influence of the thrust that the pressure increase of import department produced the valve rod to the control accuracy. Make the utility model discloses pressure control is even, the precision is high. A piston 4 which reciprocates in the valve body 1 is arranged in the valve body 1, and the piston 4 is in linkage fit with the valve rod 3. The piston is in sealing fit with the valve body through a piston sealing ring 5, and an O-shaped sealing ring 6 is connected between the piston and the valve body.
The valve rod 3 is provided with a valve rod sealing sleeve 18, and the valve rod is provided with a supporting part 17 for supporting the valve rod sealing sleeve. The supporting part 17 is an annular protrusion extending along the radial direction of the valve rod 3, a clamping groove for embedding a valve rod sealing sleeve is processed on the upper end face of the annular protrusion, and the valve rod sealing sleeve is clamped in the clamping groove.
The valve rod 3 is positioned on the upper portion of the valve rod sealing sleeve 18 and sleeved with a valve rod bushing 19, an O-shaped sealing ring 6 is connected between the valve rod bushing and the valve rod, the valve rod bushing 19 is arranged to mainly achieve the purpose of driving a piston, the piston is enabled to be linked with the valve rod, the valve rod bushing is driven to move through the movement of the valve rod to drive the piston to move, then the piston drives power to a spring, the spring is used for buffering and decompressing, and the purpose of decompressing the valve is achieved.
The outer diameter of one end, close to the valve rod sealing sleeve 18, of the valve rod bushing 19 is gradually increased from top to bottom, the valve rod bushing is commonly called as a bell mouth, the lower end part of the valve rod 3 is provided with a pressure bearing part 16, the pressure bearing part 16 is in sealing fit with the valve body 1, and the pressure bearing part 16 reciprocates up and down in the valve body 1. The lower surface of the valve rod sealing sleeve supporting part is also designed into a tapered inclined plane, and the bell mouth of the valve rod bushing 19 is designed into an inclined plane for buffering water flow and corresponds to the tapered inclined plane of the valve rod sealing sleeve supporting part, so that the purpose of buffering water pressure is achieved, and the balance degree of the valve rod is further ensured. When fluid enters the valve, the valve rod is impacted in the radial direction at first, a part of impact pistons are designed through the valve rod and a flow channel in the valve body, a part of impact pressure bearing parts are impacted, the impact force between the piston end and the pressure bearing parts is balanced, the fluid cannot pass through one end of the pressure bearing parts, then the pressure is applied to the pistons, the springs are jacked by the pistons, the impact force of the fluid is overcome through the thrust of the springs, meanwhile, the flow channel opening is gradually reduced due to the design of the supporting parts when the pistons move towards one ends of the springs, and therefore the impact force of the fluid is also reduced.
Be connected with block 13 on the valve gap 7, valve rod 3 runs through block 13 and sets up, is equipped with spring 10 in block 13, and spring 10 cup joints in the valve rod 3 outside, and piston 4 runs through the valve gap setting, and the upper end acts on spring 10. The upper and lower ends of the spring are respectively provided with an upper spring seat 11 and a lower spring seat 8. The lower spring seat is tightly pressed on the valve rod bushing 19 through the locking nut 9, the one-way thrust ball bearing 12 is arranged above the upper spring seat 11, the cap 13 is connected with the adjusting screw 15, the adjusting screw 15 acts on the spring 10, the adjusting screw is of a hollow structure, the valve rod penetrates through the adjusting screw, and the adjusting screw is in threaded connection with the cap 13. The pressure of the spring is adjusted by adjusting the adjusting screw 15. In order to prevent rapid friction between the adjusting screw and the valve stem, a bushing 14 is provided between the adjusting screw and the valve stem.
The valve body 1 is internally provided with an L-shaped flow passage or a T-shaped flow passage, the bottom of the valve body is provided with a bottom cover 2, and the cross section of the bottom cover is of an L-shaped or T-shaped structure. The bottom cap is connected to the valve body by a clamp 20. The upper cover and the valve body are connected by a clamp 20.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.
Claims (9)
1. A pressure reducing valve comprises a valve body, a valve cover and a valve rod, wherein the valve body is provided with an inlet end and an outlet end, and is characterized in that: the inlet end of the valve body is arranged in the radial direction of the valve rod, and the impact force of water flow at the inlet end acts on the valve rod in the radial direction.
2. A pressure reducing valve according to claim 1, wherein: the valve rod is provided with a valve rod sealing sleeve, and the valve rod is provided with a supporting part for supporting the valve rod sealing sleeve.
3. A pressure reducing valve according to claim 2, wherein: and a valve rod bushing is sleeved on the upper part of the valve rod sealing sleeve, which is positioned on the valve rod.
4. A pressure reducing valve according to claim 3, wherein: the outer diameter of one end of the valve rod bushing close to the valve rod sealing sleeve is gradually increased from top to bottom to form an inclined plane for buffering water flow.
5. The pressure reducing valve according to claim 4, wherein: the valve cover is connected with a cover cap, the valve rod penetrates through the cover cap, a spring is arranged in the cover cap, and the spring is sleeved outside the valve rod.
6. A pressure reducing valve according to claim 1, wherein: the valve body is internally provided with a piston which reciprocates in the valve body, the piston is in linkage fit with the valve rod, the piston penetrates through the valve cover, and the upper end of the piston acts on the spring.
7. The pressure reducing valve according to claim 6, wherein: the lower end part of the valve rod is provided with a pressure bearing part which is in sealing fit with the valve body and reciprocates up and down in the valve body.
8. The pressure reducing valve according to claim 7, wherein: an L-shaped flow passage or a T-shaped flow passage is arranged in the valve body.
9. The pressure reducing valve according to claim 5, wherein: the cap is connected with an adjusting screw which acts on the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920912605.6U CN210266049U (en) | 2019-06-18 | 2019-06-18 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920912605.6U CN210266049U (en) | 2019-06-18 | 2019-06-18 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210266049U true CN210266049U (en) | 2020-04-07 |
Family
ID=70043112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920912605.6U Active CN210266049U (en) | 2019-06-18 | 2019-06-18 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210266049U (en) |
-
2019
- 2019-06-18 CN CN201920912605.6U patent/CN210266049U/en active Active
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