CN220227980U - Adjustable regulating valve limiting structure - Google Patents
Adjustable regulating valve limiting structure Download PDFInfo
- Publication number
- CN220227980U CN220227980U CN202321781387.XU CN202321781387U CN220227980U CN 220227980 U CN220227980 U CN 220227980U CN 202321781387 U CN202321781387 U CN 202321781387U CN 220227980 U CN220227980 U CN 220227980U
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- valve
- push rod
- spring
- adjustable
- pneumatic actuator
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- 230000001105 regulatory effect Effects 0.000 title abstract description 14
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 8
- 239000012528 membrane Substances 0.000 abstract description 12
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000012856 packing Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
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Abstract
The utility model discloses an adjustable regulating valve limiting structure, which relates to the technical field of diaphragm regulating valves and adopts the following scheme: the valve comprises a valve body, install the case in the valve body, and be connected with the valve rod on the case, the top of valve rod is connected with the screw thread push rod, and installs stop nut on the screw thread push rod, install the valve gap on the valve body, install the support on the valve gap, this adjustable governing valve limit structure increases adjustable stop nut on the screw thread push rod that is located membrane head lower cover bottom, can properly adjust according to the operating mode like this, help the spring to share a part air source pressure, the spring in the membrane head is also not excessively compressed when guaranteeing that the valve is in place, the work of membrane head internal spring under normal pretightning force under this kind of valve full open state has been solved, avoid excessive compression problem, thereby prolonged the life of spring, the trouble of this kind of valve in production system has been reduced, and the rate of utilization has been improved.
Description
Technical Field
The utility model relates to the technical field of diaphragm regulating valves, in particular to an adjustable regulating valve limiting structure.
Background
The pneumatic film regulating valve is simply called regulating valve, and is a control system in the software of liquid conveying system, and has the functions of stopping, regulating, drainage, preventing backflow, stabilizing pipe, separating or overflow pressure relief, etc. and is formed from actuating mechanism and regulating mechanism.
Therefore, if the air source input pressure control device has pressure faults, the springs in the membrane heads can be compressed without limit, and most valves are limited by the compression amount of the springs at present, so that the requirement on the springs is higher, the service life of the springs can be greatly reduced after long-term compression, and the springs and the membrane heads can be irrecoverably damaged for a long time.
Disclosure of Invention
The utility model provides an adjustable regulating valve limiting structure, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an adjustable governing valve limit structure, includes the valve body, install the case in the valve body, and be connected with the valve rod on the case, the top of valve rod is connected with the screw thread push rod, and installs stop nut on the screw thread push rod, install the valve gap on the valve body, install the support on the valve gap, install pneumatic actuator on the support, and pneumatic actuator is connected with the screw thread push rod; the pneumatic actuator comprises a shell, a diaphragm, a thrust disc and a spring, wherein the diaphragm, the thrust disc and the spring are sequentially installed in the shell from bottom to top, and the thrust disc is connected with a threaded push rod.
Furthermore, the two sides of the valve body are provided with an inlet and an outlet, and the inlet and the outlet are provided with flange plates.
Further, the valve cover is filled with sealing filler, and the sealing filler is arranged between the valve cover and the valve rod.
Further, a gland is arranged on the valve cover, and the gland is positioned above the sealing filler.
Further, a bushing is mounted on the threaded push rod, and the bushing is arranged between the pneumatic actuator and the threaded push rod.
Further, an air inlet is arranged at the bottom of the pneumatic actuator, and an exhaust valve is arranged at the top of the pneumatic actuator.
Compared with the prior art, the utility model provides an adjustable regulating valve limiting structure, which has the following beneficial effects:
this governing valve limit structure with adjustable, increase adjustable stop nut on the push rod that is located membrane head lower cover bottom, can suitably adjust according to the operating mode like this, help the spring to share a part air supply pressure, the spring in the membrane head also is not excessively compressed when guaranteeing that the valve is in place, the work under normal pretightning force of the interior spring of membrane head under having solved this kind of valve full-open state, avoid excessive compression problem, thereby prolonged the life of spring, reduced the trouble of this kind of valve in production system, improved the rate of utilization.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
fig. 3 is a side view of the present utility model.
In the figure: 1. a valve body; 2. a valve core; 3. a valve stem; 4. a threaded push rod; 5. a limit nut; 6. a valve cover; 7. a bracket; 8. a pneumatic actuator; 81. a housing; 82. a membrane; 83. a thrust plate; 84. a spring; 85. an air inlet; 86. an exhaust valve; 9. an inlet and an outlet; 10. a flange plate; 11. sealing filler; 12. a gland; 13. a bushing.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the utility model discloses an adjustable regulating valve limiting structure, which comprises a valve body 1, wherein a valve core 2 is installed in the valve body 1, a valve rod 3 is connected to the valve core 2, a threaded push rod 4 is connected to the top end of the valve rod 3, a limiting nut 5 is installed on the threaded push rod 4, a valve cover 6 is installed on the valve body 1, a bracket 7 is installed on the valve cover 6, a pneumatic actuator 8 is installed on the bracket 7, the pneumatic actuator 8 is connected with the threaded push rod 4, and an adjustable limiting nut 5 is added on the threaded push rod 4 positioned at the bottom of the lower cover of the valve head, so that the valve can be properly regulated according to working conditions, the spring 84 in the valve head is helped to share a part of air source pressure, the spring 84 in the valve head is not excessively compressed at the same time when the valve acts in place, the problem that the spring 84 in the valve head works under normal pretightening force under the full open state of the valve is solved, the service life of the spring 84 is avoided, the faults of the valve in the production system are reduced, and the use ratio of the valve is improved;
the pneumatic actuator 8 comprises a shell 81, a diaphragm 82, a thrust disc 83 and a spring 84, wherein the diaphragm 82, the thrust disc 83 and the spring 84 are sequentially installed in the shell 81 from bottom to top, and the thrust disc 83 is connected with the threaded push rod 4.
Specifically, the two sides of the valve body 1 are provided with an inlet and an outlet 9, and the inlet and the outlet 9 are provided with a flange plate 10.
In this embodiment, the pipes are connected by a flange 10, and the transport medium flows in and out through an inlet and an outlet 9.
Specifically, the valve cover 6 is filled with a sealing filler 11, and the sealing filler 11 is interposed between the valve cover 6 and the valve rod 3.
In the present embodiment, the seal packing 11 is a dynamic seal device that generates a pressing force between the packing and the rotor member by a pretension or a self-tightening action of a medium pressure, and mainly plays a role of sealing.
Specifically, the valve cover 6 is provided with a gland 12, and the gland 12 is positioned above the sealing filler 11.
In this embodiment, the gland 12 is mainly used to compress the packing to ensure tightness between the packing and the valve stem 3.
Specifically, the threaded push rod 4 is provided with a bushing 13, and the bushing 13 is interposed between the pneumatic actuator 8 and the threaded push rod 4.
In this embodiment, the bushing 13 is installed in the housing 81 of the pneumatic actuator 8 to encase the threaded push rod 4, thereby reducing leakage of the air chamber of the pneumatic actuator 8 and achieving a sealing effect.
Specifically, the bottom of the pneumatic actuator 8 is provided with an air inlet 85, and the top of the pneumatic actuator is provided with an air outlet valve 86.
In this embodiment, the pneumatic actuator 8 is connected to a gas source through a gas inlet 85, and after the operation is completed, the gas is discharged through a gas outlet valve 86.
When the valve is used, the adjustable limit nut 5 is added on the threaded push rod 4 positioned at the bottom of the lower cover of the valve, so that the valve can be properly adjusted according to working conditions, the spring 84 is helped to share a part of air source pressure, the spring 84 in the valve is not excessively compressed while the valve is ensured to act in place, the problem that the spring 84 in the valve works under normal pretightening force in the full-open state of the valve is solved, the problem of excessive compression is avoided, the service life of the spring 84 is prolonged, the faults of the valve in a production system are reduced, and the utilization rate is improved.
In summary, according to the adjustable limiting structure of the adjusting valve, the adjustable limiting nut 5 is added on the threaded push rod 4 positioned at the bottom of the lower cover of the membrane head, so that the adjusting nut can be properly adjusted according to working conditions, the spring 84 is helped to share a part of air source pressure, the spring 84 in the membrane head is not excessively compressed while the valve is guaranteed to act in place, the problem that the spring 84 in the membrane head works under normal pretightening force in the full-open state of the valve is solved, the problem of excessive compression is avoided, the service life of the spring 84 is prolonged, the faults of the valve in a production system are reduced, and the utilization rate is improved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an adjustable governing valve limit structure, includes valve body (1), its characterized in that: a valve core (2) is arranged in the valve body (1), the valve core (2) is connected with a valve rod (3), the top end of the valve rod (3) is connected with a threaded push rod (4), a limit nut (5) is arranged on the threaded push rod (4), a valve cover (6) is arranged on the valve body (1), a support (7) is arranged on the valve cover (6), a pneumatic actuator (8) is arranged on the support (7), and the pneumatic actuator (8) is connected with the threaded push rod (4);
the pneumatic actuator (8) comprises a shell (81), a diaphragm (82), a thrust disc (83) and a spring (84), wherein the diaphragm (82), the thrust disc (83) and the spring (84) are sequentially installed in the shell (81) from bottom to top, and the thrust disc (83) is connected with a threaded push rod (4).
2. The adjustable throttle valve limit structure according to claim 1, wherein: the two sides of the valve body (1) are provided with an inlet and an outlet (9), and the inlet and the outlet (9) are provided with a flange plate (10).
3. The adjustable throttle valve limit structure according to claim 1, wherein: the valve cover (6) is filled with sealing filler (11), and the sealing filler (11) is arranged between the valve cover (6) and the valve rod (3).
4. An adjustable throttle valve limit structure according to claim 3, wherein: a gland (12) is arranged on the valve cover (6), and the gland (12) is positioned above the sealing filler (11).
5. The adjustable throttle valve limit structure according to claim 1, wherein: a bushing (13) is arranged on the threaded push rod (4), and the bushing (13) is arranged between the pneumatic actuator (8) and the threaded push rod (4).
6. The adjustable throttle valve limit structure according to claim 1, wherein: the bottom of the pneumatic actuator (8) is provided with an air inlet (85), and the top of the pneumatic actuator is provided with an exhaust valve (86).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321781387.XU CN220227980U (en) | 2023-07-07 | 2023-07-07 | Adjustable regulating valve limiting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321781387.XU CN220227980U (en) | 2023-07-07 | 2023-07-07 | Adjustable regulating valve limiting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227980U true CN220227980U (en) | 2023-12-22 |
Family
ID=89177659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321781387.XU Active CN220227980U (en) | 2023-07-07 | 2023-07-07 | Adjustable regulating valve limiting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227980U (en) |
-
2023
- 2023-07-07 CN CN202321781387.XU patent/CN220227980U/en active Active
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| GR01 | Patent grant |