CN217736380U - Automatic exhaust device for valve electric device - Google Patents
Automatic exhaust device for valve electric device Download PDFInfo
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- CN217736380U CN217736380U CN202221354125.0U CN202221354125U CN217736380U CN 217736380 U CN217736380 U CN 217736380U CN 202221354125 U CN202221354125 U CN 202221354125U CN 217736380 U CN217736380 U CN 217736380U
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- fixed sleeve
- automatic exhaust
- piston column
- valve
- exhaust device
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Abstract
The utility model discloses an automatic exhaust device for a valve electric device, which comprises a box body, a fixed sleeve, an O-shaped sealing ring, a piston column and a compression spring; the advantages are as follows: the utility model discloses there is the ability of control valve electric actuator mechanical transmission intracavity internal pressure, and the scale on the accessible piston post reads valve electric actuator mechanical transmission intracavity internal pressure value in real time. In addition, when the internal pressure of the valve electric device is overlarge, the automatic exhaust device can automatically release pressure so as to prevent the oil leakage phenomenon caused by the failure of the internal seal of the electric device.
Description
Technical Field
The utility model relates to a valve electric actuator technical field, especially an automatic exhaust apparatus for valve electric actuator.
Background
The valve electric device is an electromechanical device for driving a valve to open and close by electric power, and the mechanical transmission part mainly comprises a gear pair and a worm gear pair. The mechanical transmission pairs need enough lubricating oil for lubrication in the meshing process, so that the service life, the transmission performance and the transmission efficiency of the mechanical transmission pairs can be ensured. Therefore, mechanical lubrication of the valve electric actuator is critical. The utility model discloses just ensure the balanced and automatic exhaust apparatus who prevents the lubricating oil seepage of valve electric actuator mechanical transmission intracavity portion atmospheric pressure.
In the prior art, a structure of a deflation valve of a valve electric device is shown in figure 1. It can be seen from this figure that the plug 2 is screwed into the tapped hole of the tank 1, and the plug 2 is screwed down and sealed to the tank 1 by means of a rubber gasket 3. When air needs to be discharged, the plug 2 is screwed off; and (5) after the air is released, screwing the plug 2.
The electric device of the valve with the structure has the following technical defects:
1. when the air pressure in the mechanical transmission cavity of the valve electric device is overlarge, the sealing element fails, and the lubricating oil flows out of the valve electric device. This configuration, however, does not have the capability of monitoring the pressure inside the mechanical transmission chamber of the valve electric actuator, and there is a risk that the lubricating oil level will be too low, which may result in the failure of the valve electric actuator to operate properly and a reduced life span.
2. The structural seal is exposed to the external environment and has a problem of aging failure. The plug needs to be screwed off during air release, and the sealing failure can be caused in the disassembly process.
3. This structure has a disadvantage that automatic exhaust is not possible. That is, in a high-temperature environment, the pressure inside the mechanical cavity of the valve electric device rises, and when a certain pressure is reached, the sealing inside the mechanical cavity fails, so that the valve electric device leaks oil.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automatic exhaust apparatus for valve electric actuator, it has solved the technical difficulty that exists among the well-known art, adopts one-way exhaust structure, and when electric actuator internal pressure was too big, the automatic pressure release of the one-way exhaust apparatus of accessible to can read out the intracavity pressure value through piston post scale mark, to intracavity pressure real time monitoring.
The technical scheme of the utility model: an automatic exhaust device for a valve electric device comprises a box body, and is characterized by further comprising a fixed sleeve, an O-shaped sealing ring, a piston column and a compression spring; the main body of the fixed sleeve is fixedly connected with the box body, a shaft shoulder of the fixed sleeve is tightly attached to the outer end face of the box body, and the inner end of the fixed sleeve is provided with a limiting structure; the O-shaped sealing ring is assembled in the O-shaped ring groove on the fixing sleeve and is tightly attached to the box body; the piston column is matched with the shaft hole of the fixed sleeve, the piston column and the fixed sleeve are provided with air guide holes which can be communicated, and the piston column is provided with scales; the compression spring is sleeved on the piston column and is positioned between the piston column and the fixed sleeve.
The main body of the fixing sleeve is in threaded connection or shaft hole fit with the box body.
The limiting structure at the inner end of the fixing sleeve is a limiting plug, and the limiting plug is in threaded connection with the fixing sleeve.
The limiting structure at the inner end of the fixing sleeve is an integrally formed limiting structure with a through hole.
The shaft shoulder of the fixed sleeve is fixedly connected with the box body through a screw.
The O-shaped ring groove is positioned on the shaft shoulder of the fixed sleeve, and an O-shaped sealing ring A is assembled in the O-shaped ring groove.
The O-shaped ring groove is positioned on the main body of the fixing sleeve, and an O-shaped sealing ring B is assembled in the O-shaped ring groove.
The shaft shoulder of the fixed sleeve is assembled with the limiting sealing plate, and the limiting sealing plate is in clearance fit with the shaft hole of the piston column.
The shaft shoulder of the fixed sleeve is connected with a limiting seal plate A through threads.
The shaft shoulder of the fixed sleeve is fixedly connected with a limiting seal plate B through a screw.
The utility model discloses a theory of operation: the fixing sleeve is fastened on the box body and sealed with the box body. The piston column is matched with the shaft hole of the fixed sleeve and realizes air tightness. When the internal pressure of the mechanical transmission cavity of the valve electric device is greater than the external environment pressure, the piston column compresses the compression spring, and displacement is generated along the axial direction, so that the real-time pressure value can be read through the scales of the piston column. When the pressure difference between the interior of the mechanical transmission cavity of the valve electric device and the external environment reaches a critical value, the air guide hole on the piston column is communicated with the air guide hole on the fixed sleeve, so that pressure is relieved. When the pressure difference between the interior of the mechanical transmission cavity of the valve electric device and the external environment is large but the pressure difference does not reach the critical value, the piston column can be pulled, so that the air guide hole in the piston column is communicated with the air guide hole in the fixed sleeve to perform manual pressure relief.
The utility model has the advantages that: the utility model discloses there is the ability of control valve electric actuator mechanical transmission intracavity internal pressure, and the scale on the accessible piston post reads valve electric actuator mechanical transmission intracavity internal pressure value in real time. In addition, when the internal pressure of the valve electric device is overlarge, the automatic exhaust device can automatically release the pressure so as to prevent the oil leakage phenomenon caused by the failure of the internal seal of the electric device.
Drawings
Fig. 1 is a schematic structural diagram of a bleed valve structure of a valve electric device in the prior art.
Fig. 2 is a schematic structural view of embodiment 1 of the automatic exhaust device for a valve electric actuator according to the present invention, which is a state where there is no pressure difference between the inner cavity and the external environment.
Fig. 3 is the schematic structural diagram of embodiment 1 of the automatic exhaust device for a valve electric device, which is a state in which the inner cavity and the external environment reach the maximum pressure difference and the pressure is automatically released.
Fig. 4 is a schematic structural view of embodiment 2 of an automatic exhaust device for a valve electric actuator according to the present invention.
Fig. 5 is a schematic structural view of embodiment 3 of an automatic exhaust device for a valve electric actuator according to the present invention.
Fig. 6 is a schematic structural view of embodiment 4 of an automatic exhaust device for a valve electric actuator according to the present invention.
Wherein: the sealing device comprises a box body 1, a plug 2, a rubber pad 3, a fixing sleeve 4, an O-shaped sealing ring A5, a piston column 6, a compression spring 7, a limiting plug 8, an O-shaped sealing ring B9, a limiting sealing plate A10, a limiting sealing plate B11 and an air guide hole 12.
Detailed Description
Example 1: an automatic exhaust device for a valve electric device (see figures 2 and 3) comprises a box body 1, and is characterized by further comprising a fixed sleeve 4, an O-shaped sealing ring, a piston column 6 and a compression spring 7; the main body of the fixed sleeve 4 is fixedly connected with the box body 1, the shaft shoulder of the fixed sleeve 4 is tightly attached to the outer end face of the box body 1, and the inner end of the fixed sleeve 4 is provided with a limiting structure; the O-shaped sealing ring is assembled in an O-shaped ring groove on the fixing sleeve 4 and is tightly attached to the box body 1; the piston column 6 is matched with the shaft hole of the fixed sleeve 4, the piston column 6 and the fixed sleeve 4 are provided with air guide holes 12 which can be communicated, and the piston column 6 is provided with scales; the compression spring 7 is sleeved on the piston column 6 and is positioned between the piston column 6 and the fixed sleeve 4.
The main body of the fixing sleeve 4 is in threaded connection with the box body 1.
The limiting structure at the inner end of the fixing sleeve 4 is a limiting plug 8, and the limiting plug 8 is in threaded connection with the fixing sleeve 4.
The O-shaped ring groove is positioned on the shaft shoulder of the fixed sleeve 4, and an O-shaped sealing ring A5 is assembled in the O-shaped ring groove.
The working principle of the embodiment is as follows: the fixing sleeve 4 is fastened to the tank 1 and sealed with the tank 1. The piston column 6 is matched with the shaft hole of the fixed sleeve 4 and realizes air tightness. When the internal pressure of the mechanical transmission cavity of the valve electric device is greater than the external environment pressure, the piston column 6 compresses the compression spring 7 to generate displacement along the axial direction, and the real-time pressure value can be read through the scales of the piston column 6. When the pressure difference between the interior of the mechanical transmission cavity of the valve electric device and the external environment reaches a critical value, the air guide hole on the piston column 6 is communicated with the air guide hole on the fixed sleeve 4, so that pressure is relieved. When the pressure difference between the interior of the mechanical transmission cavity of the valve electric device and the external environment is large but the pressure difference does not reach the critical value, the piston column 6 can be pulled, so that the air guide hole in the piston column 6 is communicated with the air guide hole in the fixed sleeve 4 for manual pressure relief.
Example 2: an automatic exhaust device for a valve electric device (see figure 4) comprises a box body 1, and is characterized by also comprising a fixed sleeve 4, an O-shaped sealing ring, a piston column 6 and a compression spring 7; the main body of the fixed sleeve 4 is fixedly connected with the box body 1, the shaft shoulder of the fixed sleeve 4 is tightly attached to the outer end face of the box body 1, and the inner end of the fixed sleeve 4 is provided with a limiting structure; the O-shaped sealing ring is assembled in an O-shaped ring groove on the fixing sleeve 4 and is tightly attached to the box body 1; the piston column 6 is matched with the shaft hole of the fixed sleeve 4, the piston column 6 and the fixed sleeve 4 are provided with air guide holes 12 which can be communicated, and the piston column 6 is provided with scales; the compression spring 7 is sleeved on the piston column 6 and is positioned between the piston column 6 and the fixed sleeve 4.
The main body of the fixing sleeve 4 is matched with the shaft hole of the box body 1.
The limiting structure at the inner end of the fixed sleeve 4 is a limiting plug 8, and the limiting plug 8 is in threaded connection with the fixed sleeve 4.
The shaft shoulder of the fixed sleeve 4 is fixedly connected with the box body 1 through a screw.
The O-shaped ring groove is positioned on the main body of the fixed sleeve 4, and an O-shaped sealing ring B9 is assembled in the O-shaped ring groove.
The working principle of this embodiment is the same as that of embodiment 1.
Example 3: an automatic exhaust device for a valve electric device (see figure 5) comprises a box body 1, and is characterized by also comprising a fixed sleeve 4, an O-shaped sealing ring, a piston column 6 and a compression spring 7; the main body of the fixed sleeve 4 is fixedly connected with the box body 1, the shaft shoulder of the fixed sleeve 4 is tightly attached to the outer end face of the box body 1, and the inner end of the fixed sleeve 4 is provided with a limiting structure; the O-shaped sealing ring is assembled in an O-shaped ring groove on the fixing sleeve 4 and is tightly attached to the box body 1; the piston column 6 is matched with the shaft hole of the fixed sleeve 4, the piston column 6 and the fixed sleeve 4 are provided with air guide holes 12 which can be communicated, and the piston column 6 is provided with scales; the compression spring 7 is sleeved on the piston column 6 and is positioned between the piston column 6 and the fixed sleeve 4.
The main body of the fixing sleeve 4 is in threaded connection with the box body 1.
The limiting structure at the inner end of the fixed sleeve 4 is an integrally formed limiting structure with a through hole.
The O-shaped ring groove is positioned on the shaft shoulder of the fixed sleeve 4, and an O-shaped sealing ring A5 is assembled in the O-shaped ring groove.
The shaft shoulder of the fixed sleeve 4 is assembled with a limiting sealing plate, and the limiting sealing plate is in clearance fit with the 6 shaft holes of the piston column.
The shaft shoulder of the fixed sleeve 4 is connected with a limiting seal plate A10 through threads.
The working principle of this embodiment is the same as embodiment 1.
Example 4: an automatic exhaust device for a valve electric device (see figure 6) comprises a box body 1, and is characterized by also comprising a fixed sleeve 4, an O-shaped sealing ring, a piston column 6 and a compression spring 7; the main body of the fixed sleeve 4 is fixedly connected with the box body 1, the shaft shoulder of the fixed sleeve 4 is tightly attached to the outer end face of the box body 1, and the inner end of the fixed sleeve 4 is provided with a limiting structure; the O-shaped sealing ring is assembled in an O-shaped ring groove on the fixing sleeve 4 and is tightly attached to the box body 1; the piston column 6 is matched with the shaft hole of the fixed sleeve 4, the piston column 6 and the fixed sleeve 4 are provided with air guide holes 12 which can be communicated, and the piston column 6 is provided with scales; the compression spring 7 is sleeved on the piston column 6 and is positioned between the piston column 6 and the fixed sleeve 4.
The main body of the fixing sleeve 4 is matched with the shaft hole of the box body 1.
The limiting structure at the inner end of the fixed sleeve 4 is an integrally formed limiting structure with a through hole.
The shaft shoulder of the fixed sleeve 4 is fixedly connected with the box body 1 through a screw.
The O-shaped ring groove is positioned on the main body of the fixed sleeve 4, and an O-shaped sealing ring B9 is assembled in the O-shaped ring groove.
The shaft shoulder of the fixed sleeve 4 is assembled with a limiting sealing plate, and the limiting sealing plate is in clearance fit with the 6 shaft holes of the piston column.
The shaft shoulder of the fixed sleeve 4 is fixedly connected with a limiting seal plate B11 through a screw.
The working principle of this embodiment is the same as that of embodiment 1.
Claims (10)
1. An automatic exhaust device for a valve electric device comprises a box body, and is characterized by further comprising a fixed sleeve, an O-shaped sealing ring, a piston column and a compression spring; the main body of the fixed sleeve is fixedly connected with the box body, a shaft shoulder of the fixed sleeve is tightly attached to the outer end face of the box body, and the inner end of the fixed sleeve is provided with a limiting structure; the O-shaped sealing ring is assembled in an O-shaped ring groove on the fixing sleeve and is tightly attached to the box body; the piston column is matched with the shaft hole of the fixed sleeve, the piston column and the fixed sleeve are provided with air guide holes which can be communicated, and the piston column is provided with scales; the compression spring is sleeved on the piston column and is positioned between the piston column and the fixed sleeve.
2. The automatic exhaust device for the electric actuator of a valve as claimed in claim 1, wherein the main body of the fixing sleeve is engaged with the screw or the shaft hole of the housing.
3. The automatic exhaust device for the electric device of a valve as claimed in claim 1, wherein the limiting structure at the inner end of the fixing sleeve is a limiting plug, and the limiting plug is in threaded connection with the fixing sleeve.
4. The automatic exhaust device for an electric valve actuator as claimed in claim 1, wherein the limiting structure at the inner end of the fixing sleeve is an integrally formed limiting structure with a through hole.
5. The automatic exhaust device for an electric valve actuator as claimed in claim 1, wherein the shoulder of the fixing sleeve is fixedly connected to the housing by screws.
6. The automatic exhaust device for the electric actuator of the valve as claimed in claim 1, wherein said O-ring groove is formed in the shoulder of the fixing sleeve, and said O-ring groove is fitted with an O-ring a.
7. The automatic exhaust device for the electric actuator of a valve as claimed in claim 1, wherein said O-ring groove is formed in the body of the fixing cover, and said O-ring groove is fitted with an O-ring B.
8. The automatic exhaust device for the electric actuator of a valve as claimed in claim 1, wherein the shaft shoulder of the fixing sleeve is assembled with a position-limiting sealing plate, and the position-limiting sealing plate is in clearance fit with the shaft hole of the piston column.
9. The automatic exhaust device for the electric actuator of a valve as claimed in claim 8, wherein the shoulder of the fixing sleeve is connected with a position-limiting sealing plate a by screw threads.
10. The automatic exhaust device for the electric actuator of a valve as claimed in claim 8, wherein the shoulder of the fixing sleeve is fixedly connected to the position-limiting closing plate B by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221354125.0U CN217736380U (en) | 2022-06-01 | 2022-06-01 | Automatic exhaust device for valve electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221354125.0U CN217736380U (en) | 2022-06-01 | 2022-06-01 | Automatic exhaust device for valve electric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217736380U true CN217736380U (en) | 2022-11-04 |
Family
ID=83838741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221354125.0U Active CN217736380U (en) | 2022-06-01 | 2022-06-01 | Automatic exhaust device for valve electric device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217736380U (en) |
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2022
- 2022-06-01 CN CN202221354125.0U patent/CN217736380U/en active Active
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