CN210265949U - Regulating valve for balancing medium pressure - Google Patents
Regulating valve for balancing medium pressure Download PDFInfo
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- CN210265949U CN210265949U CN201920926075.0U CN201920926075U CN210265949U CN 210265949 U CN210265949 U CN 210265949U CN 201920926075 U CN201920926075 U CN 201920926075U CN 210265949 U CN210265949 U CN 210265949U
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- valve
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- cavity drainage
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Abstract
A regulating valve for balancing medium pressure is composed of valve body, valve seat, valve cage, valve core, valve cover, valve shaft and pressure-leading tube. An upper cavity drainage channel is arranged on the valve cover. One end channel opening of the upper cavity drainage channel is arranged on the outer wall of the valve cover, and the other end channel opening is arranged on the lower end face of the valve cover and is positioned right above the valve core. The valve body is provided with a lower cavity drainage channel. One end passage opening of the lower cavity drainage passage is arranged on the inner wall of the valve body below the valve seat, and the other end passage opening is arranged on the outer wall of the valve body. The pipe joints at two ends of the pressure guiding pipe are respectively provided with a pipe joint. The two pipe joints are screwed into the outer wall passage port of the upper cavity drainage passage and the outer wall passage port of the lower cavity drainage passage respectively. When the medium flows into the lower cavity of the valve body, a part of the medium can flow into the upper cavity through the pressure guiding pipe, and the pressure brought by the medium can help the driving device to provide a part of thrust, so that the valve core is pressed on the valve seat, and the sealing effect is enhanced.
Description
Technical Field
The utility model belongs to the governing valve field, in particular to balanced medium pressure's governing valve.
Background
In a high-temperature and high-pressure working condition, when the thrust provided by the driving part is insufficient, a traditional medium pressure balancing mode is that a balancing hole is added on the valve core, and a sealing ring made of rubber or polytetrafluoroethylene is used for assisting sealing, so that the situation that the high temperature resistance is not high or the thrust is still insufficient exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a balanced medium pressure's governing valve. The problem of the governing valve when high temperature high pressure, traditional structure can not resist high temperature, thrust is not enough is solved.
In order to solve the problems, the technical scheme is as follows:
a regulating valve for balancing medium pressure comprises a valve body, a valve seat, a valve cage, a valve core, a valve cover, a valve shaft and a pressure guiding pipe.
The valve cover is fixed on the upper end face of the valve body through a stud bolt. The valve seat is arranged at the lower end of the upper cavity of the valve body and is in clearance fit with the upper cavity. The valve cage is arranged at the upper end of the upper cavity of the valve body and is in clearance fit with the upper cavity. The upper end of the valve cage is propped against the lower end face of the valve cover and is compressed through the valve cover. The lower end of the valve cage is sleeved at the upper end of the valve seat and is in clearance fit with the valve seat. And a medium channel is arranged on the outer wall of the lower end of the valve cage. The valve core is arranged in the valve cage and is in clearance fit with the valve cage, can move up and down, and is matched with the valve seat to play a sealing role when closed. The lower end of the valve shaft penetrates through the through hole in the valve cover, the valve shaft is in threaded connection with the upper end of the valve core, and the driving device provides thrust for the upper end of the valve shaft to drive the valve core to move up and down. A guide sleeve is arranged between the valve shaft and the through hole in the valve cover, and the guide sleeve is in interference fit with the through hole in the valve cover.
The technical key points are as follows:
an upper cavity drainage channel is arranged on the valve cover. One end channel opening of the upper cavity drainage channel is arranged on the outer wall of the valve cover, and the other end channel opening is arranged on the lower end face of the valve cover and is positioned right above the valve core. The valve body is provided with a lower cavity drainage channel. One end passage opening of the lower cavity drainage passage is arranged on the inner wall of the valve body below the valve seat, and the other end passage opening is arranged on the outer wall of the valve body. The pipe joints at two ends of the pressure guiding pipe are respectively provided with a pipe joint. The two pipe joints are screwed into the outer wall passage port of the upper cavity drainage passage and the outer wall passage port of the lower cavity drainage passage respectively in a threaded manner to fix the pressure guiding pipe. When the medium flows into the lower cavity of the valve body, the medium sequentially flows into the upper cavity of the valve body through the lower cavity drainage channel, the pressure guiding pipe and the upper cavity drainage channel to provide a part of thrust.
The advantages are that: when the medium flows into the lower cavity of the valve body, a part of the medium can flow into the upper cavity through the pressure guiding pipe, and the pressure brought by the medium can help the driving device to provide a part of thrust, so that the valve core is pressed on the valve seat, and the sealing effect is enhanced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
A regulating valve for balancing medium pressure comprises a valve body 1, a valve seat 2, a valve cage 3, a valve core 4, a valve cover 6, a valve shaft 7 and a pressure guiding pipe 9.
The valve cover 6 is fixed on the upper end face of the valve body 1 through a stud bolt. The valve seat 2 is arranged at the lower end of the upper cavity of the valve body 1 and is in clearance fit with the upper cavity. The valve cage 3 is arranged at the upper end of the upper cavity of the valve body 1 and is in clearance fit with the upper cavity. The upper end of the valve cage 3 is propped against the lower end face of the valve cover 6 and is pressed tightly through the valve cover 6. The lower end of the valve cage 3 is sleeved at the upper end of the valve seat 2 and is in clearance fit with the valve seat. And a medium channel is arranged on the outer wall of the lower end of the valve cage 3. The valve core 4 is arranged in the valve cage 3 and is in clearance fit with the valve seat, can move up and down, and is matched with the valve seat to play a sealing role when being closed. The lower end of the valve shaft 7 penetrates through a through hole in the valve cover 6 and is in threaded connection with the upper end of the valve core 4, and the driving device provides thrust for the upper end of the valve shaft to drive the valve core to move up and down. And a guide sleeve 5 is arranged between the valve shaft 7 and the through hole on the valve cover 6, and the guide sleeve 5 is in interference fit with the through hole on the valve cover 6.
An upper cavity drainage channel is arranged on the valve cover 6. One end channel port of the upper cavity drainage channel is arranged on the outer wall of the valve cover 6, and the other end channel port is arranged on the lower end face of the valve cover 6 and is positioned right above the valve core 4. The valve body 1 is provided with a lower cavity drainage channel. One end passage opening of the lower cavity drainage passage is arranged on the inner wall of the valve body 1 below the valve seat 2, and the other end passage opening is arranged on the outer wall of the valve body 1. And pipe joints 8 are respectively arranged on pipe orifices at two ends of the pressure guiding pipe 9. The two pipe joints 8 are screwed into the outer wall passage port of the upper cavity drainage passage and the outer wall passage port of the lower cavity drainage passage respectively in a threaded manner to fix the pressure guiding pipe. When the medium flows into the lower cavity of the valve body, the medium sequentially flows into the upper cavity of the valve body through the lower cavity drainage channel, the pressure guiding pipe and the upper cavity drainage channel to provide a part of thrust.
Claims (1)
1. A regulating valve for balancing medium pressure comprises a valve body (1), a valve seat (2), a valve cage (3), a valve core (4), a valve cover (6), a valve shaft (7) and a pressure guiding pipe (9);
the valve cover (6) is fixed on the upper end surface of the valve body (1) through a stud; the valve seat (2) is arranged at the lower end of the upper cavity of the valve body (1) and is in clearance fit with the upper cavity; the valve cage (3) is arranged at the upper end of the upper cavity of the valve body (1) and is in clearance fit with the upper cavity; the upper end of the valve cage (3) is propped against the lower end face of the valve cover (6); the lower end of the valve cage (3) is sleeved at the upper end of the valve seat (2) and is in clearance fit with the upper end of the valve seat; a medium channel is arranged on the outer wall of the lower end of the valve cage (3); the valve core (4) is arranged inside the valve cage (3) and is in clearance fit with the valve cage; the lower end of the valve shaft (7) penetrates through a through hole in the valve cover (6) and is in threaded connection with the upper end of the valve core (4); a guide sleeve (5) is arranged between the valve shaft (7) and the through hole on the valve cover (6), and the guide sleeve (5) is in interference fit with the through hole on the valve cover (6);
the method is characterized in that:
an upper cavity drainage channel is arranged on the valve cover (6); a channel port at one end of the upper cavity drainage channel is arranged on the outer wall of the valve cover (6), and a channel port at the other end of the upper cavity drainage channel is arranged on the lower end face of the valve cover (6) and is positioned right above the valve core (4); a lower cavity drainage channel is arranged on the valve body (1); a passage opening at one end of the lower cavity drainage passage is arranged on the inner wall of the valve body (1) below the valve seat (2), and a passage opening at the other end of the lower cavity drainage passage is arranged on the outer wall of the valve body (1); pipe joints (8) are respectively arranged on pipe orifices at two ends of the pressure guiding pipe (9); two pipe joints (8) are screwed into the outer wall passage port of the upper cavity drainage passage and the outer wall passage port of the lower cavity drainage passage respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920926075.0U CN210265949U (en) | 2019-06-19 | 2019-06-19 | Regulating valve for balancing medium pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920926075.0U CN210265949U (en) | 2019-06-19 | 2019-06-19 | Regulating valve for balancing medium pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210265949U true CN210265949U (en) | 2020-04-07 |
Family
ID=70043468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920926075.0U Active CN210265949U (en) | 2019-06-19 | 2019-06-19 | Regulating valve for balancing medium pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210265949U (en) |
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2019
- 2019-06-19 CN CN201920926075.0U patent/CN210265949U/en active Active
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