CN211398683U - Constant pressure guide valve - Google Patents
Constant pressure guide valve Download PDFInfo
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- CN211398683U CN211398683U CN201922202551.7U CN201922202551U CN211398683U CN 211398683 U CN211398683 U CN 211398683U CN 201922202551 U CN201922202551 U CN 201922202551U CN 211398683 U CN211398683 U CN 211398683U
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Abstract
The utility model relates to a constant voltage pilot valve, including the valve body of taking the inner chamber and connecting the disk seat in the valve body below, the inner chamber lower part of valve body is equipped with the piston, and the piston bottom is equipped with stainless steel elastic diaphragm, is equipped with spring assembly in the inner chamber of piston top, and spring assembly includes the spring, is located the last cushion of spring upper end and is located the lower cushion of its lower extreme, and the centre of going up cushion and lower cushion is provided with the steel ball, has seted up in the middle of the disk seat and has run through its export from top to bottom, has evenly seted up a plurality. The stainless steel elastic diaphragm is arranged at the bottom of the piston, so that the effect of accurately controlling the fluid pressure and opening the stainless steel diaphragm can be achieved; the steel balls are arranged between the upper cushion block and the adjusting rod of the spring assembly and between the lower cushion block and the piston, the pressure of the fluid on the stainless steel diaphragm is applied to the lower cushion block after passing through the piston, the spring cannot be stressed suddenly, torsion of the spring is flattened through the steel balls, and the service life of the spring is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of the pilot valve technique and specifically relates to a constant voltage pilot valve.
Background
The constant pressure valve is used as a pressure pilot valve of a main valve in an automatic control system, can be independently installed on a pressure guide pipe, and can also be directly installed on a main valve top cover and connected with the main valve into a whole, so that the constant pressure valve is called a constant pressure main valve (also called an evaporation pressure regulating valve or a back pressure valve). The existing constant pressure valve has the defects of several points in structure: 1) when the valve is closed, the bulge in the middle of the piston stretches into the inlet, so that the fluid pressure is difficult to accurately control and the valve body is opened, 2) the lower end of the spring is directly connected with the piston, the adjusting rod penetrates into the middle of the cushion block at the upper end of the spring, when the fluid pressure is large, the pressure directly acts on the piston to enable the spring to be twisted to a certain degree, the service life of the spring is influenced, and finally the valve cannot be opened or closed normally.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides a constant pressure pilot valve.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a constant voltage pilot valve, includes the valve body of taking the inner chamber and connects the disk seat in the valve body below, the inner chamber lower part of valve body is equipped with the piston, the piston bottom is equipped with stainless steel elastic diaphragm, is equipped with spring assembly in the inner chamber of piston top, spring assembly includes the spring, is located the last cushion of spring upper end and is located its lower cushion of lower extreme, the centre of going up cushion and lower cushion is provided with the steel ball, set up in the middle of the disk seat and run through its export from top to bottom, evenly seted up a plurality of imports on the disk seat of export.
In order to facilitate manual adjustment, the top of the valve body is further limited to be provided with an adjusting rod which extends into the valve body and props against the upper cushion block.
In order to conveniently install the adjusting rod, the adjusting rod is further limited to be connected to the top of the valve body through an adjusting rod seat, and a valve cap covering the adjusting rod is connected to the periphery of the adjusting rod seat in a threaded mode.
In order to ensure the connection sealing performance of the valve body and the valve seat, the stainless steel elastic membrane is further limited to be arranged at the connection position of the valve body and the valve seat, and the upper part and the lower part of the edge of the stainless steel elastic membrane are respectively provided with a sealing gasket.
Further defined, the valve body is in threaded connection with the valve seat and clamps the stainless steel elastic diaphragm and the upper and lower sealing gaskets.
The utility model has the advantages that: the stainless steel elastic diaphragm is arranged at the bottom of the piston, so that the effect of accurately controlling the fluid pressure and opening the stainless steel diaphragm can be achieved; the steel balls are arranged between the upper cushion block and the adjusting rod of the spring assembly and between the lower cushion block and the piston, the pressure of the fluid on the stainless steel diaphragm is applied to the lower cushion block after passing through the piston, the spring cannot be stressed suddenly, torsion of the spring is flattened through the steel balls, and the service life of the spring is guaranteed.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural view of the present invention when closed.
Fig. 2 is a schematic structural view when the present invention is opened.
In the figure: 1. the valve comprises a valve body, 2 parts of a valve seat, 3 parts of a piston, 4 parts of a stainless steel elastic membrane, 5 parts of a spring assembly, 6 parts of an adjusting rod, 7 parts of an adjusting rod seat, 8 parts of a valve cap, 9 parts of a sealing gasket, 21 parts of an outlet, 22 parts of an inlet, 51 parts of a spring, 52 parts of an upper cushion block, 53 parts of a lower cushion block and 54 parts of a steel ball.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1 or fig. 2, the constant pressure pilot valve comprises a valve body 1 with an inner cavity and a valve seat 2 connected below the valve body 1, wherein a piston 3 is arranged at the lower part of the inner cavity of the valve body 1, a stainless steel elastic membrane 4 is arranged at the bottom of the piston 3, a spring assembly 5 is arranged in the inner cavity above the piston 3, the spring assembly 5 comprises a spring 51, an upper cushion block 52 positioned at the upper end of the spring 51 and a lower cushion block 53 positioned at the lower end of the spring, a steel ball 54 is arranged between the upper cushion block 52 and the lower cushion block 53, an outlet 21 penetrating through the upper part and the lower part is formed in the middle of the valve seat 2.
In this embodiment, the top of the valve body 1 is provided with an adjustment rod 6 that extends into it against the upper pad 52. The adjusting rod 6 is connected to the top of the valve body 1 through an adjusting rod seat 7, and a valve cap 8 covering the adjusting rod 6 is connected to the periphery of the adjusting rod seat 7 through threads.
In this embodiment, the stainless steel elastic diaphragm 4 is specifically disposed at the joint of the valve body 1 and the valve seat 2, and a sealing gasket 9 is disposed above and below the edge of the stainless steel elastic diaphragm 4. The valve body 1 is in threaded connection with the valve seat 2 and clamps the stainless steel elastic membrane 4 and the upper and lower sealing gaskets 9.
As shown in fig. 1, the pressure of the control fluid entering the inlet 22 (corresponding to a in the figure) acts on the stainless steel elastic diaphragm 4, and when this force is smaller than the force of the spring 51, the pilot valve is in a closed state; as shown in fig. 2, the pressure of the control fluid enters the inlet 22 (corresponding to a in the figure), acts on the stainless steel elastic diaphragm 4, when the force is larger than the force of the spring 51, the stainless steel elastic diaphragm 4 moves upwards, the pilot valve opens, and then through the outlet 21 (corresponding to B in the figure), the pressure acts on the lower connected main valve piston, which regulates the opening of the main valve.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (5)
1. The utility model provides a constant pressure pilot valve, includes valve body (1) of taking the inner chamber and connects disk seat (2) in valve body (1) below, its characterized in that: the inner chamber lower part of valve body (1) is equipped with piston (3), piston (3) bottom is equipped with stainless steel elastic diaphragm (4), is equipped with spring unit (5) in the inner chamber of piston (3) top, spring unit (5) include spring (51), be located last cushion (52) of spring (51) upper end and be located lower cushion (53) of its lower extreme, the centre of going up cushion (52) and lower cushion (53) is provided with steel ball (54), seted up in the middle of disk seat (2) and run through export (21) from top to bottom, evenly seted up a plurality of imports (22) on disk seat (2) of export (21) periphery.
2. The constant pressure pilot valve as defined in claim 1, wherein: the top of the valve body (1) is provided with an adjusting rod (6) which extends into the valve body to abut against the upper cushion block (52).
3. The constant pressure pilot valve as defined in claim 2, wherein: the adjusting rod (6) is connected to the top of the valve body (1) through an adjusting rod seat (7), and a valve cap (8) covering the adjusting rod (6) is connected to the periphery of the adjusting rod seat (7) through threads.
4. The constant pressure pilot valve as defined in claim 1, wherein: the stainless steel elastic diaphragm (4) is specifically arranged at the joint of the valve body (1) and the valve seat (2), and a sealing gasket (9) is respectively arranged on the upper side and the lower side of the edge of the stainless steel elastic diaphragm (4).
5. The constant pressure pilot valve as defined in claim 4, wherein: the valve body (1) is in threaded connection with the valve seat (2), and the stainless steel elastic membrane (4) and the upper and lower sealing gaskets (9) are clamped tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922202551.7U CN211398683U (en) | 2019-12-10 | 2019-12-10 | Constant pressure guide valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922202551.7U CN211398683U (en) | 2019-12-10 | 2019-12-10 | Constant pressure guide valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398683U true CN211398683U (en) | 2020-09-01 |
Family
ID=72222303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922202551.7U Active CN211398683U (en) | 2019-12-10 | 2019-12-10 | Constant pressure guide valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398683U (en) |
-
2019
- 2019-12-10 CN CN201922202551.7U patent/CN211398683U/en active Active
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| GR01 | Patent grant | ||
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