CN215445107U - Pneumatic film straight-through double-seat regulating valve - Google Patents
Pneumatic film straight-through double-seat regulating valve Download PDFInfo
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- CN215445107U CN215445107U CN202122017850.0U CN202122017850U CN215445107U CN 215445107 U CN215445107 U CN 215445107U CN 202122017850 U CN202122017850 U CN 202122017850U CN 215445107 U CN215445107 U CN 215445107U
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 31
- 210000004907 gland Anatomy 0.000 claims abstract description 14
- 239000012528 membrane Substances 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 2
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The utility model discloses a pneumatic film straight-through double-seat regulating valve in the field of pneumatic regulating valves, which comprises a valve body, wherein a valve core is arranged in the valve body, a valve seat is arranged on the valve core, the valve core is divided into an upper valve core and a lower valve core, one side of the upper valve core and one side of the lower valve core are provided with connecting rods, one end of each connecting rod is provided with a leakage-proof valve sleeve clamped in the inner wall of the valve body, and a gland, a second spring and a guide rod are arranged in each leakage-proof valve sleeve; according to the utility model, the leakage-proof valve sleeves which work synchronously are arranged at the upper valve core and the lower valve core in the traditional pneumatic film double-seat regulating valve, and along with the opening and closing synchronous work of the upper valve core and the lower valve core, a secondary sealing structure is added to the tail end of the valve core on the premise of not influencing the normal circulation of the valve body, so that the phenomenon of medium overflow caused by poor sealing when the upper valve core and the lower valve core are closed is prevented, and the problem of serious leakage accidents of the pneumatic film double-seat regulating valve is effectively solved.
Description
Technical Field
The utility model relates to the field of pneumatic regulating valves, in particular to a pneumatic film straight-through double-seat regulating valve.
Background
The pneumatic film regulating valve is a regulating valve for short and comprises an actuating mechanism and a regulating mechanism, the development of the pneumatic film regulating valve has been in the history of eighty years from the beginning of the 20 th century to the present, ten major regulating valve products, such as a self-operated valve, a positioner and the like are successively generated, and the regulating valve comprises an electric actuating mechanism or a pneumatic actuating mechanism and a regulating valve. The regulating valve is generally divided into a straight-through single-seat regulating valve and a straight-through double-seat regulating valve, and the straight-through double-seat regulating valve has the characteristics of large flow capacity, small unbalance and stable operation, so that the straight-through double-seat regulating valve is particularly suitable for occasions with large flow and high pressure drop.
When the conventional pneumatic film straight-through double-seat regulating valve is used, the natural leakage phenomenon can be caused due to the poor contact ratio of an upper valve core and a lower valve core, so that medium overflow is caused to cause accidents. Accordingly, one skilled in the art provides a pneumatic diaphragm straight-through double seat regulator valve to solve the problems set forth in the background above.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pneumatic film straight-through double-seat regulating valve to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
the pneumatic film straight-through double-seat regulating valve comprises a valve body, wherein a valve core is arranged in the valve body, a valve seat is arranged on the valve core, the valve core is divided into an upper valve core and a lower valve core, a connecting rod is arranged on one side of the upper valve core and one side of the lower valve core, a leakage-proof valve sleeve clamped and pressed in the inner wall of the valve body is arranged at one end of the connecting rod, and a gland, a second spring and a guide rod are arranged in the leakage-proof valve sleeve.
As a still further scheme of the utility model: the valve core is embedded in the valve seats, the valve core is connected with the inner wall of the valve body in a sliding mode through the valve seats, and the connecting rods are welded with the outer wall of the valve core.
As a still further scheme of the utility model: the guide rod is fixed between the inner walls of the valve body, the gland is connected with the guide rod in a sliding mode, one end, far away from the valve core, of the connecting rod is fixedly welded with the outer wall of the gland, and the second spring is embedded in the leakage-proof valve sleeve.
As a still further scheme of the utility model: the bottom of the leakproof valve sleeve is in sealing joint with the inner wall of the valve body, the outer top of the valve body is fixedly provided with an upper valve cover through a bolt, a first spring is clamped and pressed in the upper valve cover, and the top of the valve core is welded with the bottom of the first spring.
As a still further scheme of the utility model: the first spring top be provided with upper valve cover sliding connection's valve rod, the valve rod top is connected with the executive rod through the couple, the shaping of executive rod top has pneumatic control assembly.
As a still further scheme of the utility model: the pneumatic control valve is characterized in that a pneumatic chamber is formed in the pneumatic control assembly, a rubber diaphragm is elastically connected to the inner wall of the pneumatic chamber, a pneumatic source pipe is inserted into the top of the pneumatic chamber, and a lower valve cover is fixed to the bottom of the valve body through bolts.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the leakage-proof valve sleeves which work synchronously are arranged at the upper valve core and the lower valve core in the traditional pneumatic film double-seat regulating valve, and along with the opening and closing synchronous work of the upper valve core and the lower valve core, a secondary sealing structure is added to the tail end of the valve core on the premise of not influencing the normal circulation of the valve body, so that the phenomenon of medium overflow caused by poor sealing when the upper valve core and the lower valve core are closed is prevented, and the problem of serious leakage accidents of the pneumatic film double-seat regulating valve is effectively solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front cross-sectional view of the valve body of the present invention;
FIG. 3 is a schematic view of the internal structure of the pneumatic control assembly of the present invention;
FIG. 4 is a front cross-sectional view of a leak-proof valve sleeve of the present invention;
fig. 5 is a right side view of the leak-proof valve sleeve and valve body connection of the present invention.
In the figure: 1-a valve body; 2-upper valve cover; 3-lower valve cover; 4-a valve stem; 5-a pneumatic control assembly; 6-valve seat; 7-a valve core; 8-a first spring; 9-a gas source pipe; 10-an actuating lever; 11-a rubber diaphragm; 12-a pneumatic chamber; 13-leak-proof valve sleeve; 14-a gland; 15-a connecting rod; 16-a second spring; 17-guide bar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, in the embodiment of the present invention, the pneumatic film straight-through double-seat regulating valve includes a valve body 1, a valve core 7 is disposed inside the valve body 1, a valve seat 6 is disposed on the valve core 7, the valve core 7 is divided into an upper valve core and a lower valve core, a connecting rod 15 is disposed on one side of the upper valve core and one side of the lower valve core, a leakage-proof valve sleeve 13 clamped and pressed in an inner wall of the valve body 1 is disposed at one end of the connecting rod 15, and a gland 14, a second spring 16 and a guide rod 17 are disposed in the leakage-proof valve sleeve 13.
Two groups of valve seats 6 are arranged, the valve core 7 is embedded in the valve seats 6, the valve core 7 is connected with the inner wall of the valve body 1 in a sliding way through the valve seats 6, the connecting rod 15 is welded with the outer wall of the valve core 7, and the valve core 7 is made of stainless steel materials, so that the valve core 7 can be prevented from being eroded and damaged by media; the guide rod 17 is fixed between the inner walls of the valve body 1, the gland 14 is in sliding connection with the guide rod 17, one end, away from the valve core 7, of the connecting rod 15 is fixedly welded with the outer wall of the gland 14, the second spring 16 is embedded in the leakage-proof valve sleeve 13, the guide rod 17 is used for providing a guide effect for the movement of the leakage-proof valve sleeve 13 and avoiding bending, after the leakage-proof valve sleeve 13 is supported by the second spring 16, the flow port is tightly sealed, the medium is prevented from leaking outwards, and the gland 14 is matched with the connecting rod 15 to compress the second spring 16; the bottom of the leakage-proof valve sleeve 13 is in sealing adhesive joint with the inner wall of the valve body 1, the outer top of the valve body 1 is fixedly provided with the upper valve cover 2 through a bolt, the first spring 8 is clamped and pressed in the upper valve cover 2, the top of the valve core 7 is welded with the bottom of the first spring 8, the first spring 8 has larger recovery deformation force than the second spring 16, and when the valve body 1 is closed, the valve core 7 can be effectively supported at the circulation port to prevent medium circulation; the top of the first spring 8 is provided with a valve rod 4 which is connected with the upper valve cover 2 in a sliding way, the top of the valve rod 4 is connected with an actuating rod 10 through a hook, and the top end of the actuating rod 10 is formed with a pneumatic control assembly 5; pneumatic chamber 12 has been formed in the pneumatic control subassembly 5, and elastic connection has rubber diaphragm 11 on the 12 inner walls of pneumatic chamber, and rubber diaphragm 11 has stronger deformability, and pneumatic chamber 12 tops are pegged graft and are had air supply pipe 9, and air supply pipe 9 is used for leading-in gas, and gaseous pressure receives external device's control, and valve body 1 bottom is fixed with lower valve gap 3 through the bolt.
The working principle of the utility model is as follows: when the device is used specifically, the air source pipe 9 is connected into an external air source control system and used for inflating or exhausting the pneumatic control assembly 5, after inflation, the pressure in the pneumatic chamber 12 is increased, the rubber diaphragm 11 expands to extrude the actuating rod 10, the actuating rod 10 presses the valve rod 4 downwards, the valve rod 4 extrudes the valve core 7 in the valve body 1 through the first spring 8, the upper valve core and the lower valve core in the valve core 7 move vertically, the valve seat 6 moves to enable medium to circulate from the opening, meanwhile, the valve core 7 drives the gland 14 to press downwards through the connecting rod 15 when moving, the gland 14 compresses the leakage-proof valve sleeve 13 downwards along the guide rod 17, the second circulation port is opened, the medium is finally discharged out of the valve body 1, when the valve body 1 is closed, the pneumatic chamber 12 releases pressure, the first spring 8 recovers deformation, the valve core 7 moves upwards to the initial position to close the circulation port, and meanwhile, the leakage-proof valve sleeve 13 is supported by the second spring 16 to close the circulation port, the medium that reveals when can block case 7 closure not tight has improved pneumatic membrane double-seat governing valve seal greatly, has solved the problem that pneumatic membrane double-seat governing valve reveals the accident serious.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. Pneumatic direct double seat governing valve of membrane, including valve body (1), its characterized in that: the anti-leakage valve is characterized in that a valve core (7) is arranged in the valve body (1), a valve seat (6) is arranged on the valve core (7), the valve core (7) is divided into an upper valve core and a lower valve core, a connecting rod (15) is arranged on one side of the upper valve core and one side of the lower valve core, one end of the connecting rod (15) is provided with a leakage-proof valve sleeve (13) clamped in the inner wall of the valve body (1), and a gland (14), a second spring (16) and a guide rod (17) are arranged in the leakage-proof valve sleeve (13).
2. The pneumatic membrane straight-through double-seat regulating valve according to claim 1, characterized in that: the valve seat (6) is provided with two groups, the valve core (7) is embedded in the valve seat (6), the valve core (7) is connected with the inner wall of the valve body (1) in a sliding mode through the valve seat (6), and the connecting rod (15) is welded with the outer wall of the valve core (7).
3. The pneumatic membrane straight-through double-seat regulating valve according to claim 2, characterized in that: the valve is characterized in that the guide rod (17) is fixed between the inner walls of the valve body (1), the gland (14) is in sliding connection with the guide rod (17), one end of the valve core (7) is far away from the connecting rod (15), the outer wall of the gland (14) is fixed in a welding mode, and the second spring (16) is embedded in the leakage-proof valve sleeve (13).
4. The pneumatic membrane straight-through double-seat regulating valve according to claim 3, characterized in that: leak protection valve barrel (13) bottom with valve body (1) inner wall is for sealed cementing, valve body (1) outer top is fixed with upper valve cover (2) through the bolt, upper valve cover (2) inside callipers have first spring (8), case (7) top with first spring (8) bottom welding.
5. The pneumatic membrane straight-through double-seat regulating valve according to claim 4, wherein: first spring (8) top be provided with go up valve gap (2) sliding connection's valve rod (4), valve rod (4) top is connected with executive rod (10) through the couple, the shaping of executive rod (10) top has pneumatic control assembly (5).
6. The pneumatic membrane straight-through double-seat regulating valve according to claim 5, wherein: the pneumatic control valve is characterized in that a pneumatic chamber (12) is formed in the pneumatic control assembly (5), a rubber diaphragm (11) is elastically connected to the inner wall of the pneumatic chamber (12), a pneumatic source pipe (9) is inserted into the top of the pneumatic chamber (12), and a lower valve cover (3) is fixed to the bottom of the valve body (1) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122017850.0U CN215445107U (en) | 2021-08-25 | 2021-08-25 | Pneumatic film straight-through double-seat regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122017850.0U CN215445107U (en) | 2021-08-25 | 2021-08-25 | Pneumatic film straight-through double-seat regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215445107U true CN215445107U (en) | 2022-01-07 |
Family
ID=79696426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122017850.0U Active CN215445107U (en) | 2021-08-25 | 2021-08-25 | Pneumatic film straight-through double-seat regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215445107U (en) |
-
2021
- 2021-08-25 CN CN202122017850.0U patent/CN215445107U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231018 Address after: 710065 Room 2008, 4th Floor, Building 8, Shangye Road Headquarters Economic Park, Fengxi New City, Xixian New District, Xi'an City, Shaanxi Province Patentee after: Maxco Industrial Technology (Xi'an) Co.,Ltd. Address before: 311402 Yin Hu Jie Dao Gao Qiao Cun, Fuyang District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Shengbao valve industry Co.,Ltd. |
|
| TR01 | Transfer of patent right |