CN215831276U - High-adjustment-precision valve actuating mechanism convenient for dismounting push rod - Google Patents
High-adjustment-precision valve actuating mechanism convenient for dismounting push rod Download PDFInfo
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- CN215831276U CN215831276U CN202122478941.4U CN202122478941U CN215831276U CN 215831276 U CN215831276 U CN 215831276U CN 202122478941 U CN202122478941 U CN 202122478941U CN 215831276 U CN215831276 U CN 215831276U
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- push rod
- guide sleeve
- actuating mechanism
- diaphragm
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Abstract
The utility model provides a high-precision valve actuating mechanism convenient for dismounting a push rod, which comprises an actuating mechanism, a bracket arranged on the actuating mechanism through a bolt, and is characterized by also comprising a guide sleeve which is arranged on the bracket and is provided with a step structure in a detachable manner, a push rod which is slidably arranged in the guide sleeve and is fixedly connected with the actuating mechanism, and a high-precision adjusting mechanism arranged on the guide sleeve. The utility model solves the problems that the sealing performance of an upper cavity and a lower cavity is reduced due to the clearance generated at the sealing position of a push rod and a diaphragm after a guide sleeve in the conventional pneumatic actuating mechanism is inconvenient to disassemble and assemble and the diaphragm is frequently vibrated, and the adjusting precision of the actuating mechanism is low due to the large friction force of a tetrafluoride ring.
Description
Technical Field
The utility model relates to the field of valves, in particular to a high-adjustment-precision valve actuating mechanism convenient for dismounting a push rod.
Background
The pneumatic actuating mechanism is an actuating device for opening and closing or regulating a valve by air pressure drive, at present, more and more occasions are adopted for a pneumatic control valve, an O-shaped sealing ring and a tetrafluoro guide ring are adopted at the sealing guide position of a push rod of the conventional pneumatic actuating mechanism, a guide sleeve for installing the O-shaped sealing ring and the tetrafluoro ring is welded and fixed on a support, and meanwhile, the push rod only isolates an upper cavity from a lower cavity by sealing with a central hole of a diaphragm.
A series of structures at the push rod of a conventional pneumatic actuating mechanism have certain defects, firstly, a tetrafluoro guide ring adopted at the sealing guide position of the push rod influences the adjusting precision of the actuating mechanism due to large friction force, and the tetrafluoro ring is not suitable for a plurality of severe working conditions due to the influence of fluorine content of the material of the tetrafluoro ring. Secondly, the guide sleeve for installing the O-shaped sealing ring and the tetrafluoride ring is directly welded on the membrane cover of the actuating mechanism, so that although a part of sealing effect is met, the O-shaped sealing ring is inconvenient to disassemble, assemble and maintain and replace on line, and if the O-shaped sealing ring groove needs to be maintained, the whole actuating mechanism needs to be disassembled. Finally, the sealing at the push rod of the upper cavity and the lower cavity of the actuating mechanism can affect the sealing of the push rod and the diaphragm after the diaphragm frequently acts, so that the sealing performance of the upper cavity and the lower cavity is reduced, the pressure of an air source adjusted by the actuating mechanism changes, and the adjusting performance is finally affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that after a guide sleeve in the existing pneumatic actuating mechanism is inconvenient to disassemble and assemble, the guide sleeve is replaced on line and frequently vibrates with a diaphragm, a gap is generated at the sealing position of a push rod and the diaphragm to cause the reduction of the sealing property of an upper cavity and a lower cavity, and the friction force of a tetrafluoride ring is large to cause the reduction of the adjusting precision of the actuating mechanism.
In order to achieve the purpose, the utility model provides a high-adjustment-precision valve actuating mechanism convenient for dismounting a push rod, which comprises an actuating mechanism, a support arranged on the actuating mechanism through a bolt, and is characterized by also comprising a guide sleeve arranged on the support and provided with a detachable step structure, a push rod arranged in the guide sleeve in a sliding manner and fixedly connected with the actuating mechanism, and a high-precision adjusting mechanism arranged on the guide sleeve.
Preferably, the support is provided with an installation groove, and a hole steel wire check ring in contact with the top of the guide sleeve is installed in the installation groove.
Preferably, the high-precision adjusting mechanism comprises an oilless bearing arranged on the guide sleeve and connected with the push rod, and a diaphragm positioning table arranged on the push rod.
Further, a diaphragm sealing groove is formed in the diaphragm positioning table; and a diaphragm O-shaped sealing ring sealed between the push rod and the diaphragm positioning table is arranged on the diaphragm sealing groove.
Preferably, a plurality of sealing grooves are formed in the guide sleeve, and an O-shaped sealing ring sealed between the push rod and the guide sleeve is arranged on the sealing groove of the guide sleeve.
The utility model has the beneficial effects that: the problems that the sealing performance of an upper cavity and a lower cavity is reduced due to the fact that a gap is formed between a push rod and a diaphragm sealing position after a guide sleeve is inconvenient to disassemble and assemble, the diaphragm is replaced on line and the diaphragm vibrates frequently and the adjusting precision of an executing mechanism is low due to the fact that the friction force of a tetrafluoride ring is large in the existing pneumatic executing mechanism are solved;
the guide sleeve is limited by matching the step structure additionally arranged on the guide sleeve with the hole steel wire check ring, and the guide sleeve can be disassembled, assembled and maintained only by taking the hole steel wire check ring out of a common tool when the guide sleeve is taken out, so that the problem that the guide sleeve of a conventional actuating mechanism is difficult to disassemble and assemble is solved;
a diaphragm O-shaped sealing ring sealed between the push rod and the diaphragm positioning table is additionally arranged on the diaphragm positioning table and used as a second sealing barrier to improve the sealing effect;
through changing the tetrafluoride ring into oilless bearing, reduce frictional force and install the O type sealing washer sealed between push rod and uide bushing on the uide bushing, guarantee the leakproofness of actuating mechanism upper and lower cavity, improved the precision that actuating mechanism adjusted.
Drawings
The utility model is further illustrated by the following figures and examples:
FIG. 1 is a schematic diagram of an optimized actuator structure of the present invention;
fig. 2 is an enlarged view of fig. 1.
The figures are numbered: the device comprises an actuating mechanism 1, a support 2, a guide sleeve 3, a push rod 4, a high-precision adjusting mechanism 5, a mounting groove 21, a limiting step 22, a hole steel wire retainer ring 31, an oilless bearing 51, a diaphragm positioning table 52, a diaphragm sealing groove 53, a diaphragm O-shaped sealing ring 54, a sealing groove 55 and an O-shaped sealing ring 56.
Detailed Description
The valve actuating mechanism of the present invention with high adjusting precision is further described by the following embodiments and the accompanying drawings.
Referring to the attached drawings 1 to 2, the high-adjustment-precision valve actuating mechanism convenient for dismounting the push rod comprises an actuating mechanism 1, a support 2 arranged on the actuating mechanism 1 through a bolt, and is characterized by further comprising a guide sleeve 3 which is arranged on the support 2 and is provided with a detachable step structure, a push rod 4 which is slidably arranged in the guide sleeve 3 and is fixedly connected with the actuating mechanism 1, and a high-precision adjusting mechanism 5 arranged on the guide sleeve 3; the bracket 2 is provided with a mounting groove 21 which is provided with a hole steel wire retainer ring 31 contacted with the top of the guide sleeve 3; when the guide sleeve 3 is fixedly installed, the steps on the guide sleeve 3 are matched with the steps on the support 2, the hole steel wire retainer ring 31 is installed in the installation groove 21 on the support 2 and is contacted with the top of the guide sleeve 3, and finally one end of the push rod 4 penetrates through the guide sleeve 3, and the other end of the push rod is fixedly installed on the executing mechanism 1; according to the utility model, the position of the guide sleeve 3 is fixed by the steel wire retainer ring 31 through the step of the guide sleeve 3 and the step matching hole of the bracket 2, so that the guide sleeve 3 cannot move up and down along with the push rod 4, and when the guide sleeve 3 needs to be disassembled, assembled and maintained, the steel wire retainer ring 31 for the hole only needs to be taken out by a common tool.
The high-precision adjusting mechanism 5 comprises an oilless bearing 51 which is arranged on the guide sleeve 3 and contacted with the push rod 4, and a diaphragm positioning table 52 which is arranged on the push rod 4; a diaphragm sealing groove 53 is arranged on the diaphragm positioning table 52; a diaphragm O-shaped sealing ring 54 sealed between the push rod 4 and the diaphragm positioning table 52 is arranged on the diaphragm sealing groove 53; a plurality of sealing grooves 55 are arranged in the guide sleeve 3, and O-shaped sealing rings 56 sealed between the push rod 4 and the guide sleeve 3 are arranged on the sealing grooves 55 of the guide sleeve 3; when the high-precision adjusting mechanism 5 is installed and fixed, the oilless bearing 51 is installed on the guide sleeve 3 through interference fit, the diaphragm O-shaped sealing ring 54 is installed on the diaphragm sealing groove 53, the O-shaped sealing ring 56 is installed on the sealing groove 55, and then the push rod 4 penetrates through the diaphragm positioning table 52 and the guide sleeve 3; by installing the membrane O-ring 54 on the membrane positioning table 52, which is sealed between the push rod 4 and the membrane positioning table 52, the sealing performance between the membrane and the push rod 4 is deteriorated after the membrane moves frequently, but the sealing effect of the membrane O-ring 54 at the membrane positioning table 52 is too high to serve as a second sealing barrier; by installing the O-ring 56 between the push rod 4 and the guide sleeve 3 on the guide sleeve 3, gas or liquid is prevented from leaking into the actuator through a gap between the guide sleeve 3 and the push rod 4 due to friction, and affecting the adjustment accuracy of the actuator 1.
The installation process of the utility model is that the O-shaped sealing ring 56 is firstly installed in the sealing groove 55, then the membrane O-shaped sealing ring 54 is installed in the membrane sealing groove 53, then the oilless bearing 51 is installed in the guide sleeve 3 through tight fit, then the guide sleeve 3 is installed on the bracket 2 through the limiting step 22, then the hole steel wire retainer ring 31 is installed in the installation groove 21, and then the push rod 4 passes through the guide sleeve 3 and the membrane positioning table 52 and is installed on the actuating mechanism 1, thus completing the installation.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (5)
1. The utility model provides a valve actuating mechanism of high adjustment accuracy convenient to dismouting push rod, includes actuating mechanism (1), installs support (2) on actuating mechanism (1) through the bolt, its characterized in that still including installing and be equipped with step structure detachable uide bushing (3) on support (2), slidable mounting in uide bushing (3) and with actuating mechanism (1) fixed connection's push rod (4) and install high accuracy adjustment mechanism (5) in uide bushing (3).
2. The valve actuator with high adjusting precision and convenient for assembling and disassembling the push rod according to claim 1 is characterized in that the bracket (2) is provided with a mounting groove (21), and a hole steel wire retaining ring (31) contacted with the top of the guide sleeve (3) is arranged in the mounting groove (21).
3. The high-precision valve actuator mechanism convenient for assembling and disassembling the push rod according to claim 1 is characterized in that the high-precision adjusting mechanism (5) comprises an oilless bearing (51) which is arranged on the guide sleeve (3) and connected with the push rod (4) and a diaphragm positioning table (52) which is arranged on the push rod (4).
4. The valve actuator with high adjusting precision convenient for assembling and disassembling the push rod according to claim 3, characterized in that the diaphragm positioning table (52) is provided with a diaphragm sealing groove (53); and a diaphragm O-shaped sealing ring (54) sealed between the push rod (4) and the diaphragm positioning table (52) is arranged on the diaphragm sealing groove (53).
5. The valve actuator with high adjusting precision convenient for dismounting the push rod according to claim 1, characterized in that a plurality of sealing grooves (55) are arranged in the guide sleeve (3), and an O-ring (56) sealed between the push rod (4) and the guide sleeve (3) is arranged on the sealing groove (55) of the guide sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122478941.4U CN215831276U (en) | 2021-10-15 | 2021-10-15 | High-adjustment-precision valve actuating mechanism convenient for dismounting push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122478941.4U CN215831276U (en) | 2021-10-15 | 2021-10-15 | High-adjustment-precision valve actuating mechanism convenient for dismounting push rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215831276U true CN215831276U (en) | 2022-02-15 |
Family
ID=80202723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122478941.4U Active CN215831276U (en) | 2021-10-15 | 2021-10-15 | High-adjustment-precision valve actuating mechanism convenient for dismounting push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215831276U (en) |
-
2021
- 2021-10-15 CN CN202122478941.4U patent/CN215831276U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311400 No.41 Jinqiu Avenue, Fuchun street, Fuyang District, Hangzhou City, Zhejiang Province Patentee after: ZHEJIANG SANFANG CONTROL VALVE Co.,Ltd. Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: 311400 No.41 Jinqiu Avenue, Fuchun street, Fuyang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG SANFANG CONTROL VALVE Co.,Ltd. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |