CN211398682U - Suction pressure control pilot valve - Google Patents
Suction pressure control pilot valve Download PDFInfo
- Publication number
- CN211398682U CN211398682U CN201922196040.9U CN201922196040U CN211398682U CN 211398682 U CN211398682 U CN 211398682U CN 201922196040 U CN201922196040 U CN 201922196040U CN 211398682 U CN211398682 U CN 211398682U
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- valve
- valve body
- spring
- pressure control
- control pilot
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Abstract
The utility model relates to an inspiratory pressure control pilot valve, including the valve body of taking the inner chamber and the disk seat of connection in the valve body below, the inner chamber lower part of valve body is equipped with the piston, the piston bottom is equipped with elastic diaphragm, be equipped with spring assembly in the inner chamber of piston top, spring assembly includes the spring, be located the last cushion of spring upper end and the lower cushion that is located its lower extreme, the centre of going up cushion and lower cushion is provided with the steel ball, the import that has the horizontal direction is seted up in the bottom outside of disk seat, be equipped with external air inlet on the disk seat lateral wall, be equipped with horizontal cavity and the vertical cavity of mutual intercommunication in the disk seat, the one end of horizontal cavity is external air inlet, be equipped with the axostylus axostyle in the vertical cavity, the upper end. The steel balls are arranged between the upper cushion block and the lower cushion block, and the torsion of the spring is flattened through the steel balls, so that the service life of the spring is ensured; the utility model discloses simple structure, the installation is maintained conveniently.
Description
Technical Field
The utility model belongs to the technical field of the pilot valve technique and specifically relates to a suction pressure control pilot valve.
Background
The suction pressure control pilot valve is used for downstream pressure regulation and can be directly mounted on the main valve or mounted with a valve seat in an external pipe for controlling one or several main valves. The prior inspiratory pressure control pilot valve has the following defects: 1) the lower extreme of spring is direct to be connected with the piston, penetrates the regulation pole in the middle of the upper end cushion of spring, and when fluid pressure was great, pressure direct action can make the spring take place certain torsion on the piston, influences the life of spring, finally leads to the unable normal start-stop of valve. 2) The structure is complicated, and the installation and maintenance are difficult.
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 pilot valve for controlling the suction pressure.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a suction pressure control pilot valve, includes the valve body of taking the inner chamber and connects the disk seat in valve body below, the inner chamber lower part of valve body is equipped with the piston, the piston bottom is equipped with 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, the import that has the horizontal direction is seted up in the bottom outside of disk seat, is equipped with external air inlet on the disk seat lateral wall, is equipped with horizontal cavity and the vertical cavity of mutual intercommunication in the disk seat, and the one end of horizontal cavity is external air inlet, is equipped with the axostylus axostyle in the vertical cavity, and the upper end and the elastic.
It is further defined that the location on the shaft corresponding to the inlet is a reduced diameter section.
Further, the elastic diaphragm is specifically arranged at the joint of the valve body and the valve seat, and the upper side and the lower side of the edge of the elastic diaphragm are respectively provided with a sealing gasket.
It is further defined that the valve body is screwed with the valve seat and clamps the elastic diaphragm and the upper and lower sealing gaskets.
Further limiting, the top of the valve body is provided with an adjusting rod which extends into the valve body and props against the upper cushion block.
Further, the adjusting rod is connected to the top of the valve body through an adjusting rod seat, and the adjusting rod seat is arranged on the top of the valve body in a protruding mode and is of an integrated structure with the valve body.
Still further defined, a bonnet is threadedly coupled to an outer periphery of the adjuster rod holder to cover the adjuster rod.
The utility model has the advantages that: the steel balls are arranged between the upper cushion block and the adjusting rod and between the lower cushion block and the piston of the spring assembly, the fluid is applied to the pressure of the elastic diaphragm and then applied to the lower cushion block after passing through the piston, the spring cannot receive sudden force, and the torsion of the spring is spread out through the steel balls, so that the service life of the spring is ensured; the utility model discloses simple structure, the installation is maintained conveniently.
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 an elastic diaphragm, 5 parts of a spring assembly, 6 parts of an external air inlet, 7 parts of a shaft lever, 8 parts of a return spring, 9 parts of a sealing gasket, 10 parts of an adjusting rod, 11 parts of an adjusting rod seat, 12 parts of a valve cap, 21 parts of an inlet, 22 parts of a horizontal chamber, 23 parts of a vertical chamber, 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, a suction pressure control 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, an 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, a horizontal inlet 21 is arranged at the outer side of the bottom of the valve seat 2, an external air inlet 6 is arranged on the side wall of the valve seat 2, a horizontal chamber 22 and a vertical chamber 23 which are communicated with each other are arranged in the valve seat 2, an external air inlet 6 is arranged at one end of the horizontal, the lower end of the shaft 7 is provided with a stop for opening or closing the vertical chamber 23. The position of the shaft 7 corresponding to the inlet is a reduced diameter section.
In this embodiment, the elastic diaphragm 4 is specifically disposed at the joint of the valve body 1 and the valve seat 2, and a gasket 9 is disposed above and below the edge of the elastic diaphragm 4. The valve body 1 is in threaded connection with the valve seat 2 and clamps the elastic diaphragm 4 and the upper and lower sealing gaskets 9.
In this embodiment, the top of the valve body 1 is provided with an adjusting rod 10 extending into the top to abut against the upper cushion block 52, the adjusting rod 10 is connected to the top of the valve body 1 through an adjusting rod seat 11, the adjusting rod seat 11 protrudes from the top of the valve body 1 and is integrated with the valve body 1, and the adjusting rod seat 11 is connected to the periphery of a valve cap 12 covering the adjusting rod 10 through threads.
The suction pressure control pilot valve of the present embodiment always controls the pressure below the set pressure value, and as shown in fig. 1, when the sum of the pressure of the fluid entering the external air inlet 6 (corresponding to C in the figure) and the force of the return spring 8 is greater than the force of the spring 51, the pilot valve is in a closed state; as shown in fig. 2, only when the pressure of the fluid entering the external inlet port 6 (corresponding to C in the figure) is reduced, when the sum of the pressure reduced to the external inlet port 6 (corresponding to C in the figure) and the force of the return spring 8 is lower than the set pressure, the spring 51 pushes the shaft 7 to make the fluid flow out of the vertical chamber 23 (corresponding to B in the figure) from the inlet 21 (corresponding to C in the figure), and the pressure acts on the main valve piston to regulate the opening of the main valve.
In addition, when the adjusting rod 10 is rotated clockwise, the opening pressure of the pilot valve can be increased; when the adjusting lever 10 is rotated counterclockwise, the opening pressure of the pilot valve can be reduced. The pilot valve pressure regulation range of the embodiment is 0.5 Bars-7 Bars.
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 (7)
1. The utility model provides a suction pressure control 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 valve is characterized in that a piston (3) is arranged at the lower part of an inner cavity of the valve body (1), an elastic diaphragm (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 inlet (21) in the horizontal direction is formed in the outer side of the bottom of the valve seat (2), an external air inlet (6) is formed in the side wall of the valve seat (2), a horizontal cavity (22) and a vertical cavity (23) which are communicated with each other are arranged in the valve seat (2), an external air inlet (6) is formed in one end of the horizontal cavity (22), a return spring (8) is sleeved on the middle section of the shaft lever (7), and a stop block for opening or closing the vertical cavity (23) is arranged at the lower end of the shaft lever (7).
2. A suction pressure control pilot valve as set forth in claim 1, wherein: the position of the shaft lever (7) corresponding to the inlet (21) is a diameter reduction section.
3. A suction pressure control pilot valve as set forth in claim 1, wherein: the 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 elastic diaphragm (4).
4. A suction pressure control pilot valve as set forth in claim 3, wherein: the valve body (1) is in threaded connection with the valve seat (2) and clamps the elastic diaphragm (4) and the upper and lower sealing gaskets (9) of the elastic diaphragm.
5. A suction pressure control pilot valve as set forth in claim 1, wherein: the top of the valve body (1) is provided with an adjusting rod (10) which extends into the valve body to abut against the upper cushion block (52).
6. The suction pressure control pilot valve as set forth in claim 5, wherein: the adjusting rod (10) is connected to the top of the valve body (1) through an adjusting rod seat (11), and the adjusting rod seat (11) is arranged on the top of the valve body (1) in a protruding mode and is integrated with the valve body (1).
7. The suction pressure control pilot valve as set forth in claim 6, wherein: the outer periphery of the adjusting rod seat (11) is connected with a valve cap (12) which covers the adjusting rod (10) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922196040.9U CN211398682U (en) | 2019-12-10 | 2019-12-10 | Suction pressure control pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922196040.9U CN211398682U (en) | 2019-12-10 | 2019-12-10 | Suction pressure control pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398682U true CN211398682U (en) | 2020-09-01 |
Family
ID=72210545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922196040.9U Active CN211398682U (en) | 2019-12-10 | 2019-12-10 | Suction pressure control pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398682U (en) |
-
2019
- 2019-12-10 CN CN201922196040.9U patent/CN211398682U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |