CN212106929U - Pilot-operated type regulating valve - Google Patents
Pilot-operated type regulating valve Download PDFInfo
- Publication number
- CN212106929U CN212106929U CN202020286600.XU CN202020286600U CN212106929U CN 212106929 U CN212106929 U CN 212106929U CN 202020286600 U CN202020286600 U CN 202020286600U CN 212106929 U CN212106929 U CN 212106929U
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- valve
- plug body
- hole
- air
- pilot
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Abstract
The utility model relates to the technical field of regulating valves, in particular to a pilot-operated regulating valve, the lower end of a large plug body is provided with a main air hole which extends vertically, the outer side of the large plug body is provided with a plurality of small air holes which are communicated with the main air hole, the bottom of an air groove is provided with an auxiliary air hole, the outer side of a valve seat is provided with an air inlet hole which is communicated with the air groove, the air groove is internally and movably provided with an auxiliary plug body which is used for sealing the bottom of the air groove, the upper end of the auxiliary plug body is fixedly arranged at the lower side of a bulge part through a connecting rod, and the; the utility model can drive the valve rod to move upwards through the actuator to expose the small air hole part above the valve seat so as to open the large plug body, and can adjust the flow by adjusting the quantity of the small air hole exposed above the valve seat; the actuator continuously drives the valve rod to move upwards to enable the large plug body to be completely separated from the valve seat, so that the large plug body is completely opened, the flow is increased, the actuator continuously drives the valve rod to move upwards to enable the auxiliary air hole to be opened, and the flow is continuously increased.
Description
Technical Field
The utility model relates to a governing valve technical field, concretely relates to guide's formula governing valve.
Background
At present, the application range of the pilot-operated regulating valve is very wide, and the pilot-operated regulating valve is widely used in various fields such as petroleum, chemical industry, electric power, metallurgy, steel and the like. The pilot-operated regulating valve has the characteristics of small volume, compact structure, good sealing effect, high cutting-off capability, wide application range, long service life and the like. The existing pilot regulating valve is small in regulation, and when the pilot regulating valve is used in a place with a large regulation range, two or more pilot regulating valves are required to be connected in series to meet the operating requirements of working conditions.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a guide's formula governing valve is provided to current guide's formula governing valve adjusts less problem in solving the background art.
In order to solve the technical problem, the technical scheme of the utility model is that: a pilot-operated regulating valve comprises a valve body, wherein a valve cavity is arranged at the upper end of the valve body, a valve cover covering the valve cavity is fixedly installed on the valve body, an air inlet communicated with one side of the valve cavity is formed in the valve body, an air outlet communicated with one side of the valve cavity is also formed in the valve body, and one end, communicated with the valve cavity, of the air inlet is positioned above one end, communicated with the valve cavity, of the air outlet; a partition plate for separating the air inlet from the air outlet is arranged in the valve cavity, a mounting hole which vertically penetrates through the partition plate is formed in the partition plate, and an annular valve seat is fixedly mounted in the mounting hole; a vertically extending guide hole is formed in the center of the valve seat, a large plug body is movably mounted in the guide hole, and an annular protruding part used for being supported at the upper end of the valve seat is arranged on the outer side of the large plug body; the lower end of the large plug body is provided with a vertically extending main air hole, and the outer side of the large plug body and the position corresponding to the main air hole are provided with a plurality of small air holes communicated with the main air hole; the upper end of the valve seat is provided with a plurality of air grooves which are uniformly arranged around the guide hole at intervals, the bottom of each air groove is provided with an auxiliary air hole which extends downwards and penetrates through the valve seat, the outer side of the valve seat is provided with an air inlet hole communicated with the air grooves, and the air inlet hole is positioned on the upper side of the partition plate; an auxiliary plug body used for sealing the bottom of the air groove is movably arranged in the air groove, and the upper end of the auxiliary plug body is fixedly arranged on the lower side of the protruding part through a connecting rod; the large plug body is further provided with a pilot assembly, the valve cover is provided with a through hole extending vertically, a valve rod is movably mounted in the through hole, the lower end of the valve rod is connected with the pilot assembly, and the upper end of the valve rod is connected with an actuator located on the outer side of the valve body.
As a preferred technical scheme, the pilot assembly comprises a pilot hole which is positioned at the upper end of the large plug body and is vertically communicated with the main air hole, and a small plug body is movably arranged in the pilot hole; the lower end of the small plug body is provided with a vertically extending air guide hole, and the outer side of the upper end of the small plug body is provided with a communication hole communicated with the air guide hole; the upper end of the small plug body is fixedly provided with a stop dog positioned above the large plug body, and the outer side of the lower end of the small plug body is fixedly provided with an annular baffle positioned in the main air hole; when the stop block abuts against the upper end of the large plug body, the pilot hole seals the communication hole, and when the baffle abuts against the upper end of the main air hole, the communication hole is exposed to the outer side of the pilot hole; the lower end of the valve rod is fixedly arranged on the stop block.
As a further improvement, a support plate is fixedly arranged in the main air hole through a connecting column, a spring is fixedly connected to the upper side of the support plate, and the spring is supported on the lower side of the baffle.
As a further improvement, an annular limiting block is fixedly arranged in the air groove, and when the auxiliary plug body abuts against the lower side of the limiting block, the large plug body is completely separated from the valve seat and the auxiliary plug body is positioned above the air inlet.
As a further improvement, the lower side of the bulge is provided with a sealing rubber pad.
Due to the adoption of the technical scheme, the pilot-operated regulating valve is characterized in that the lower end of a large plug body is provided with a vertically extending main air hole, the position of the outer side of the large plug body corresponding to the position of the main air hole is provided with a plurality of small air holes communicated with the main air hole, the upper end of a valve seat is provided with a plurality of air grooves uniformly arranged at intervals around the guide hole, the bottom of each air groove is provided with an auxiliary air hole which extends downwards and penetrates through the valve seat, the outer side of the valve seat is provided with an air inlet hole communicated with the air grooves, the air inlet hole is positioned on the upper side of a partition plate, an auxiliary plug body used for sealing the bottom of the air groove is movably arranged in the air grooves, the upper end of the auxiliary plug body is fixedly arranged on the lower side of the protruding part through a connecting rod, and a; the utility model can drive the valve rod to move upwards through the actuator to expose the small air hole part above the valve seat so as to open the large plug body, and can adjust the flow by adjusting the quantity of the small air hole exposed above the valve seat; the utility model can continuously drive the valve rod to move upwards through the actuator to make the large plug body completely separate from the valve seat, thereby completely opening the large plug body and increasing the flow; the utility model discloses can continue to drive the valve rod rebound through the executor and make vice cock body move to the top of inlet port and make vice gas pocket open when big cock body is opened completely to continue to increase the flow.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a large plug body according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a small plug body according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of the communication hole of the embodiment of the present invention when opened;
FIG. 5 is a schematic view of the structure of the embodiment of the present invention with the small air holes partially exposed above the valve seat;
fig. 6 is a schematic structural view of the large plug body according to the embodiment of the present invention when fully opened;
fig. 7 is a schematic structural view of the auxiliary air hole according to the embodiment of the present invention when opened.
In the figure: 1-a valve body; 2-valve cavity; 3-valve cover; 4-an air inlet; 5-air outlet; 6-a separator; 7-mounting holes; 8-valve seat; 9-a guide hole; 10-big plug body; 11-a projection; 12-main gas hole; 13-small pores; 14-a gas tank; 15-secondary pores; 16-an air intake; 17-an auxiliary plug body; 18-a connecting rod; 19-a through hole; 20-a valve stem; 21-an actuator; 22-pilot hole; 23-a small plug body; 24-air vents; 25-a communicating hole; 26-a stopper; 27-a baffle; 28-connecting column; 29-a support plate; 30-a spring; 31-a limiting block; 32-sealing rubber pad.
Detailed Description
As shown in fig. 1 to 7, a pilot-operated type regulating valve comprises a valve body 1, wherein a valve cavity 2 is arranged at the upper end of the valve body 1, a valve cover 3 covering the valve cavity 2 is fixedly arranged on the valve body 1, an air inlet 4 communicated with one side of the valve cavity 2 is arranged on the valve body 1, an air outlet 5 communicated with one side of the valve cavity 2 is also arranged on the valve body 1, and one end of the air inlet 4 communicated with the valve cavity 2 is positioned above one end of the air outlet 5 communicated with the valve cavity 2; a partition plate 6 for separating the air inlet 4 from the air outlet 5 is arranged in the valve cavity 2, a mounting hole 7 vertically penetrating through the partition plate 6 is formed in the partition plate 6, and an annular valve seat 8 is fixedly mounted in the mounting hole 7; a vertically extending guide hole 9 is formed in the center of the valve seat 8, a large plug body 10 is movably mounted in the guide hole 9, and an annular protruding part 11 used for being supported at the upper end of the valve seat 8 is arranged on the outer side of the large plug body 10; the lower end of the large plug body 10 is provided with a main air hole 12 which extends vertically, and the outer side of the large plug body 10 and the position corresponding to the main air hole 12 are provided with a plurality of small air holes 13 which are communicated with the main air hole 12; the upper end of the valve seat 8 is provided with a plurality of air grooves 14 which are uniformly arranged around the guide hole 9 at intervals, the bottom of the air groove 14 is provided with an auxiliary air hole 15 which extends downwards and penetrates through the valve seat 8, the outer side of the valve seat 8 is provided with an air inlet hole 16 communicated with the air groove 14, and the air inlet hole 16 is positioned on the upper side of the clapboard 6; an auxiliary plug body 17 used for closing the bottom of the air groove 14 is movably arranged in the air groove 14, and the upper end of the auxiliary plug body 17 is fixedly arranged at the lower side of the convex part 11 through a connecting rod 18; the large plug body 10 is further provided with a pilot assembly, the valve cover 3 is provided with a through hole 19 extending vertically, a valve rod 20 is movably mounted in the through hole 19, the lower end of the valve rod 20 is connected with the pilot assembly, and the upper end of the valve rod 20 is connected with an actuator 21 located on the outer side of the valve body 1.
The pilot assembly comprises a pilot hole 22 which is positioned at the upper end of the large plug body 10 and is vertically communicated with the main air hole 12, and a small plug body 23 is movably arranged in the pilot hole 22; the lower end of the small plug body 23 is provided with a vertically extending air guide hole 24, and the outer side of the upper end of the small plug body 23 is provided with a communication hole 25 communicated with the air guide hole 24; a stopper 26 positioned above the large plug body 10 is fixedly arranged at the upper end of the small plug body, and an annular baffle 27 positioned in the main air hole 12 is fixedly arranged at the outer side of the lower end of the small plug body 23; the pilot hole 22 closes the communication hole 25 when the stopper 26 abuts against the upper end of the large plug body 10, and the communication hole 25 is exposed to the outside of the pilot hole 22 when the baffle plate 27 abuts against the upper end of the main gas hole 12; the lower end of the valve stem 20 is fixedly mounted on the stopper 26.
A support plate 29 is fixedly installed in the main air hole 12 through a connection column 28, and a spring 30 is fixedly connected to the upper side of the support plate 29 and supported on the lower side of the baffle 27.
An annular limiting block 31 is fixedly installed in the air groove 14, when the auxiliary plug body 17 abuts against the lower side of the limiting block 31, the large plug body 10 is completely separated from the valve seat 8, and the auxiliary plug body 17 is located above the air inlet 16.
The lower side of the projection 11 is provided with a sealing rubber pad 32.
The working principle is as follows: when the control valve is closed, the actuator 21 drives the valve rod 20 to move downwards, as shown in fig. 1 and fig. 2, the valve rod 20 drives the stop 26 to abut against the upper end of the large plug body 10, and the stop 26 drives the small plug body 23 to move downwards, so that the communication hole 25 is received in the pilot hole 22 and is closed by the pilot hole 22; meanwhile, the stop 26 pushes the large plug body 10 to move downwards so that the convex part 11 is abutted on the valve seat 8, and the small air hole 13 is retracted into the guide hole 9 and is closed by the guide hole 9; in addition, the convex part 11 drives the auxiliary plug body 17 to abut against the bottom of the air groove 14 through the connecting rod 18 to seal the auxiliary air hole 15, so that the air inlet 4 and the air outlet 5 are separated, and the sealing rubber gasket 32 can further enhance the sealing performance of the plug body 10; the fluid in the intake port 4 applies pressure to the large plug body 10 in a state where the control valve is closed, and compresses the large plug body 10.
When the control valve is opened, the actuator 21 drives the valve rod 20 to move upwards, the valve rod 2 drives the small plug body 23 to move upwards through the stop 26 so that the communication hole 25 is exposed to the upper side of the pilot hole 22 to open the communication hole 25, as shown in fig. 4, fluid in the air inlet 4 enters the air outlet 5 through the communication hole 25, the air guide hole 24 and the main air hole 12, the pressure difference between the air inlet 4 and the air outlet 5 is reduced, and therefore the pulling force when the large plug body 10 is opened is reduced; the spring 30 is arranged to reduce the lifting force when the communication hole 25 is opened; the actuator 21 continuously drives the valve rod 20 to move upwards, the valve rod 20 drives the small plug body 23 to move upwards, the small plug body 23 drives the large plug body 10 to move upwards through the baffle plate 27, so that the small air hole 13 is partially exposed above the valve seat 8, and the large plug body 10 is opened, as shown in fig. 5, fluid in the air inlet 4 enters the air outlet 5 through the small air hole 13 and the main air hole 12; the flow can be adjusted by adjusting the quantity of the small air holes 13 exposed above the valve seat 8; if a large flow state is needed, the actuator 21 continues to drive the valve rod 20 to move upwards, the valve rod 20 drives the small plug body 23 to move upwards, the small plug body 23 drives the large plug body 10 to move upwards through the baffle plate 27, so that the large plug body 10 is completely separated from the valve seat 8, and the large plug body 10 is completely opened, as shown in fig. 6, fluid in the air inlet 4 directly enters the air outlet 5 through the guide hole 9; if the flow needs to be increased continuously, the actuator 21 drives the valve rod 20 to move upwards continuously, the valve rod 20 drives the small plug body 23 to move upwards, the small plug body 23 drives the large plug body 10 to move upwards through the baffle plate 27, the large plug body 10 drives the auxiliary plug body 17 to move upwards through the protruding part 11 and the connecting rod 18, the auxiliary plug body 17 moves to the upper part of the air inlet hole 16 to open the auxiliary air hole 15, as shown in fig. 7, the limiting block 31 can prevent the auxiliary plug body 17 from completely separating from the air groove 14, at the moment, the fluid in the air inlet 4 enters the air outlet 5 through the guide hole 9, and at the same time, the fluid in the air inlet 4 enters the air outlet 5 through the air inlet hole 16, the air groove 14 and the auxiliary.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A pilot operated regulator valve characterized by: the valve comprises a valve body, wherein a valve cavity is arranged at the upper end of the valve body, a valve cover covering the valve cavity is fixedly arranged on the valve body, an air inlet communicated with one side of the valve cavity is formed in the valve body, an air outlet communicated with one side of the valve cavity is also formed in the valve body, and one end, communicated with the valve cavity, of the air inlet is positioned above one end, communicated with the valve cavity, of the air outlet; a partition plate for separating the air inlet from the air outlet is arranged in the valve cavity, a mounting hole which vertically penetrates through the partition plate is formed in the partition plate, and an annular valve seat is fixedly mounted in the mounting hole; a vertically extending guide hole is formed in the center of the valve seat, a large plug body is movably mounted in the guide hole, and an annular protruding part used for being supported at the upper end of the valve seat is arranged on the outer side of the large plug body; the lower end of the large plug body is provided with a vertically extending main air hole, and the outer side of the large plug body and the position corresponding to the main air hole are provided with a plurality of small air holes communicated with the main air hole; the upper end of the valve seat is provided with a plurality of air grooves which are uniformly arranged around the guide hole at intervals, the bottom of each air groove is provided with an auxiliary air hole which extends downwards and penetrates through the valve seat, the outer side of the valve seat is provided with an air inlet hole communicated with the air grooves, and the air inlet hole is positioned on the upper side of the partition plate; an auxiliary plug body used for sealing the bottom of the air groove is movably arranged in the air groove, and the upper end of the auxiliary plug body is fixedly arranged on the lower side of the protruding part through a connecting rod; the large plug body is further provided with a pilot assembly, the valve cover is provided with a through hole extending vertically, a valve rod is movably mounted in the through hole, the lower end of the valve rod is connected with the pilot assembly, and the upper end of the valve rod is connected with an actuator located on the outer side of the valve body.
2. A pilot operated regulator valve as defined in claim 1 wherein: the pilot assembly comprises a pilot hole which is positioned at the upper end of the large plug body and is vertically communicated with the main air hole, and a small plug body is movably arranged in the pilot hole; the lower end of the small plug body is provided with a vertically extending air guide hole, and the outer side of the upper end of the small plug body is provided with a communication hole communicated with the air guide hole; the upper end of the small plug body is fixedly provided with a stop dog positioned above the large plug body, and the outer side of the lower end of the small plug body is fixedly provided with an annular baffle positioned in the main air hole; when the stop block abuts against the upper end of the large plug body, the pilot hole seals the communication hole, and when the baffle abuts against the upper end of the main air hole, the communication hole is exposed to the outer side of the pilot hole; the lower end of the valve rod is fixedly arranged on the stop block.
3. A pilot operated regulator valve as defined in claim 2, wherein: a support plate is fixedly arranged in the main air hole through a connecting column, a spring is fixedly connected to the upper side of the support plate, and the spring is supported on the lower side of the baffle.
4. A pilot operated regulator valve as defined in claim 1 wherein: an annular limiting block is fixedly installed in the air groove, and when the auxiliary plug body abuts against the lower side of the limiting block, the large plug body is completely separated from the valve seat, and the auxiliary plug body is located above the air inlet.
5. A pilot operated regulator valve as defined in claim 1 wherein: and a sealing rubber pad is arranged on the lower side of the protruding part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020286600.XU CN212106929U (en) | 2020-03-10 | 2020-03-10 | Pilot-operated type regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020286600.XU CN212106929U (en) | 2020-03-10 | 2020-03-10 | Pilot-operated type regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212106929U true CN212106929U (en) | 2020-12-08 |
Family
ID=73635222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020286600.XU Expired - Fee Related CN212106929U (en) | 2020-03-10 | 2020-03-10 | Pilot-operated type regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212106929U (en) |
-
2020
- 2020-03-10 CN CN202020286600.XU patent/CN212106929U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201208 Termination date: 20210310 |