CN214466491U - Pneumatic diaphragm valve drives actuating cylinder with guide structure - Google Patents
Pneumatic diaphragm valve drives actuating cylinder with guide structure Download PDFInfo
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- CN214466491U CN214466491U CN202120467697.9U CN202120467697U CN214466491U CN 214466491 U CN214466491 U CN 214466491U CN 202120467697 U CN202120467697 U CN 202120467697U CN 214466491 U CN214466491 U CN 214466491U
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Abstract
The utility model discloses a pneumatic diaphragm valve drives actuating cylinder with guide structure, including the cylinder block, the cylinder block passes through the cylinder head and seals, be provided with the piston in the cylinder block, the fixed valve rod that is provided with in piston center, the tip sliding connection of valve rod is to the cylinder head, the piston is provided with first sealing washer with the contact surface of cylinder block, the both sides of first sealing washer are provided with first direction circle. The utility model arranges the sealing ring and the guide ring on the contact surface of the piston and the cylinder body, thereby ensuring the sealing performance of the piston and the cylinder body, ensuring the reliability of the piston movement, and avoiding the jamming of the piston movement to abrade the inner wall of the cylinder body; the sealing rings and the guide rings are arranged on the contact surfaces of the cylinder body and the valve rod and the contact between the cylinder cover and the valve rod, so that the sealing performance between the valve rod and the cylinder body and between the valve rod and the cylinder cover is ensured, and the reliability of the movement of the valve rod driven by the piston is ensured.
Description
Technical Field
The utility model relates to a cylinder especially relates to a pneumatic diaphragm valve drives actuating cylinder with guide structure.
Background
The flow channel of the valve body of the pneumatic diaphragm valve is in a weir type, and the valve is opened and closed by driving the valve rod to move up and down through the piston under the action of an air source by the cylinder, so that the valve clack and the diaphragm are driven to lift. The cylinder is connected with the valve body through a bolt.
When no air source pressure is input, the valve clack and the diaphragm are lowered by the spring force, the passage is cut off, and the valve is closed; otherwise, the valve is opened when the air source is input. The key of valve opening is that the piston provides enough thrust, and in order to ensure enough thrust, good sealing performance and action reliability must be provided between the piston and the cylinder body.
The problems that the piston is jammed in movement and the inner wall of the cylinder block is abraded in operation are caused by the influence of the tolerance existing in the machining and matching of parts. Therefore, it is necessary to design a pneumatic diaphragm valve driving cylinder with a guide structure.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a pneumatic diaphragm valve drives actuating cylinder with guide structure, sets up the guide ring in the sliding connection department of piston and cylinder block, reduces the jam that the piston drove the valve rod and removes the in-process.
The utility model discloses a solve above-mentioned technical problem and the technical scheme who adopts provides a pneumatic diaphragm valve drives actuating cylinder with guide structure, including the cylinder block, the cylinder block passes through the cylinder head and seals, be provided with the piston in the cylinder block, the fixed valve rod that is provided with in piston center, the tip sliding connection of valve rod is to the cylinder head, be provided with the spring between piston and the cylinder head, the piston is provided with first sealing washer with the contact surface of cylinder block, the both sides of first sealing washer are provided with first guide ring.
Further, a first sealing groove matched with a first sealing ring is formed in the circumferential direction of the side wall, in contact with the cylinder block, of the piston, and the first sealing ring is arranged in the first sealing groove; the two sides of the first sealing groove are circumferentially provided with first guide grooves matched with the first guide rings, and the first guide rings are arranged in the first guide grooves.
Further, a second sealing ring is arranged on the contact surface of the cylinder body and the valve rod, and second guide rings are arranged on two sides of the second sealing ring; and a third sealing ring is arranged on the contact surface of the cylinder cover and the valve rod, and third guide rings are arranged on two sides of the third sealing ring.
Further, a second sealing groove matched with a second sealing ring is formed in the circumferential direction of the side wall, in contact with the valve rod, of the cylinder body, and the second sealing ring is arranged in the second sealing groove; second guide grooves matched with second guide rings are formed in the two sides of the second seal groove along the circumferential direction, and the second guide rings are arranged in the second guide grooves; a third sealing groove matched with a third sealing ring is formed in the circumferential direction of the side wall, in contact with the valve rod, of the cylinder cover, and the third sealing ring is arranged in the third sealing groove; and third guide grooves matched with third guide rings are formed in the two sides of the third seal groove along the circumferential direction, and the third guide rings are arranged in the third guide grooves.
Further, the piston is provided with a fourth seal groove in the lateral wall of being connected with the valve rod, be provided with the fourth sealing washer in the fourth seal groove.
Further, the valve rod is fixedly connected with the piston through a fixing nut arranged on the valve rod.
Further, the end of the valve rod is provided with a limit nut, and the limit nut limits the moving distance of the valve rod.
Further, the cylinder block and the cylinder head are connected by steel balls in an embedded manner and are locked by screws.
Furthermore, a plurality of positioning grooves are formed in the contact surface of the cylinder body and the cylinder cover at equal intervals along the circumferential direction, the cross section of each positioning groove is semicircular and matched with the steel ball, an annular connecting groove is formed in the contact surface of the cylinder cover and the cylinder body along the circumferential direction, the cross section of each connecting groove is semicircular and matched with the steel ball, the connecting groove and the positioning groove are correspondingly arranged, a through locking groove is formed in the side wall of the cylinder cover, the locking groove and the connecting groove are correspondingly and communicatively arranged, when the cylinder cover is rotated to enable the locking groove to be opposite to the positioning grooves, the steel ball is clamped into the positioning groove and the connecting groove to connect the cylinder body and the cylinder cover; the locking groove is provided with internal threads, and the screw is screwed into the locking groove to lock the steel ball.
Furthermore, the piston is made of metal, and the first sealing ring is made of rubber.
The utility model discloses contrast prior art has following beneficial effect: the utility model provides a pneumatic diaphragm valve actuating cylinder with guide structure sets up sealing washer and guide ring at the contact surface of piston and cylinder block, guarantees piston and cylinder block sealing performance, leads through the guide ring and guarantees the reliability of piston motion, avoids piston motion bite and wearing and tearing cylinder block inner wall simultaneously; the sealing ring and the guide ring are arranged on the contact surface of the cylinder body and the valve rod and the contact between the cylinder cover and the valve rod, so that the sealing performance between the valve rod and the cylinder body and between the valve rod and the cylinder cover is guaranteed, the guide ring guides to guarantee the reliability that the piston drives the valve rod to move, and meanwhile, the valve rod is prevented from moving and jamming.
Drawings
Fig. 1 is a schematic structural diagram of a pneumatic diaphragm valve driving cylinder with a guide structure in an embodiment of the present invention;
fig. 2 is an enlarged view of the contact surface of the piston and the cylinder body in the embodiment of the present invention.
In the figure:
1. a valve stem; 2. a second guide ring; 3. a second seal ring; 4. a fourth seal ring; 5. a first guide ring; 6. a first seal ring; 7. a piston; 8. a cylinder block; 9. a steel ball; 10. a screw; 11. fixing a nut; 12. a cylinder head; 13. a third guide ring; 14. a third seal ring; 15. a limit nut; 16. a spring.
Detailed Description
The invention is further described with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of a pneumatic diaphragm valve driving cylinder with a guide structure in an embodiment of the present invention.
Referring to fig. 1, the pneumatic diaphragm valve driving cylinder with a guide structure according to an embodiment of the present invention includes a cylinder block 8, the cylinder block 8 is sealed by a cylinder head 12, a piston 7 is disposed in the cylinder block 8, a valve rod 1 is fixedly disposed at the center of the piston 7, an end of the valve rod 1 is slidably connected to the cylinder head 12, a spring 16 is disposed between the piston 7 and the cylinder head 12, a first sealing ring 6 is disposed on a contact surface between the piston 7 and the cylinder block 8, and first guide rings 5 are disposed on two sides of the first sealing ring 6.
Referring to fig. 2, in the pneumatic diaphragm valve driving cylinder with a guide structure according to the embodiment of the present invention, a first sealing groove matched with the first sealing ring 6 is circumferentially disposed on a side wall of the piston 7 contacting the cylinder block 8, and the first sealing ring 6 is disposed in the first sealing groove; the both sides of first seal groove are provided with the first guide way that matches with first guide ring 5 along circumference, first guide ring 5 sets up in first guide way. Guarantee the sealed effect between piston 7 and the cylinder block 8, lead the reliability of guaranteeing piston 7 motion simultaneously through first guide ring 5, avoid piston 7 motion bite, wearing and tearing 8 inner walls of cylinder block simultaneously.
Specifically, a second sealing ring 3 is arranged on the contact surface of the cylinder block 8 and the valve rod 1, and second guide rings 2 are arranged on two sides of the second sealing ring 3; and a third sealing ring 14 is arranged on the contact surface of the cylinder cover 12 and the valve rod 1, and third guide rings 13 are arranged on two sides of the third sealing ring 14. A second sealing groove matched with the second sealing ring 3 is formed in the circumferential direction of the side wall, in contact with the valve rod 1, of the cylinder body 8, and the second sealing ring 3 is arranged in the second sealing groove; second guide grooves matched with the second guide rings 2 are formed in the two sides of the second seal groove along the circumferential direction, and the second guide rings 2 are arranged in the second guide grooves; a third sealing groove matched with a third sealing ring 14 is formed in the circumferential direction of the side wall, in contact with the valve rod 1, of the cylinder head 12, and the third sealing ring 14 is arranged in the third sealing groove; and third guide grooves matched with the third guide rings 13 are formed in the two sides of the third seal groove along the circumferential direction, and the third guide rings 13 are arranged in the third guide grooves. The sealing between the valve rod 1 and the cylinder block 8 and the cylinder cover 12 is ensured, and the reliability of the movement of the valve rod 1 is ensured.
Preferably, the piston 7 is provided with a fourth sealing groove at a side wall connected with the valve rod 1, and a fourth sealing ring 4 is arranged in the fourth sealing groove. Further ensuring the sealing effect at the piston 7.
Specifically, the valve rod 1 is fixedly connected with the piston 7 through a fixing nut 11 arranged on the valve rod 1; the end of the valve stem 1 is provided with a limit nut 15, said limit nut 15 defining the displacement distance of the valve stem 1.
Specifically, the cylinder block 8 and the cylinder head 12 are connected by embedding a steel ball 9 and locked by a screw 10; a plurality of positioning grooves are circumferentially and equidistantly arranged on the contact surface of the cylinder block 8 and the cylinder head 12, the cross section of each positioning groove is in a semicircular shape matched with the steel ball 9, an annular connecting groove is circumferentially arranged on the contact surface of the cylinder head 12 and the cylinder block 8, the cross section of each connecting groove is in a semicircular shape matched with the steel ball 9, the connecting grooves and the positioning grooves are correspondingly arranged, a through locking groove is arranged on the side wall of the cylinder head 12, the locking groove and the connecting grooves are correspondingly and communicatively arranged, and when the cylinder head 12 is rotated to enable the locking groove to be opposite to the positioning grooves, the steel balls 9 are clamped into the positioning grooves and the connecting grooves through the locking grooves to connect the cylinder block 8 and the cylinder head 12; the locking groove is provided with internal threads, and the screw 10 is screwed into the locking groove to lock the steel ball 9. Simple structure, installation easy operation.
Preferably, the piston 7 is made of metal, and the first seal ring 6 is made of rubber.
To sum up, the pneumatic diaphragm valve driving cylinder with the guiding structure provided by the embodiment of the present invention is provided with the sealing ring and the guiding ring on the contact surface between the piston 7 and the cylinder block 8, so as to ensure the sealing performance between the piston 7 and the cylinder block 8, ensure the reliability of the movement of the piston 7 by guiding through the guiding ring, and simultaneously avoid the piston 7 from moving and being jammed and wearing the inner wall of the cylinder block 8; set up sealing washer and guide ring at the contact surface of cylinder block 8 and valve rod 1 and the contact of cylinder head 12 and valve rod 1, guarantee the sealing performance between valve rod 1 and cylinder block 8, the cylinder head 12, the guide ring leads and guarantees the reliability that piston 7 drove the motion of valve rod 1, avoids valve rod 1 motion bite simultaneously.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The pneumatic diaphragm valve driving cylinder with the guide structure is characterized by comprising a cylinder body, wherein the cylinder body is sealed through a cylinder cover, a piston is arranged in the cylinder body, a valve rod is fixedly arranged in the center of the piston, the end part of the valve rod is connected to the cylinder cover in a sliding mode, a spring is arranged between the piston and the cylinder cover, a first sealing ring is arranged on the contact surface of the piston and the cylinder body, and first guide rings are arranged on two sides of the first sealing ring.
2. The pneumatic diaphragm valve driving cylinder with the guide structure according to claim 1, wherein a side wall of the piston contacting the cylinder block is circumferentially provided with a first sealing groove matching with a first sealing ring, and the first sealing ring is disposed in the first sealing groove; the two sides of the first sealing groove are circumferentially provided with first guide grooves matched with the first guide rings, and the first guide rings are arranged in the first guide grooves.
3. The pneumatic diaphragm valve driving cylinder with the guide structure according to claim 1, wherein a second sealing ring is arranged on a contact surface of the cylinder body and the valve rod, and second guide rings are arranged on two sides of the second sealing ring; and a third sealing ring is arranged on the contact surface of the cylinder cover and the valve rod, and third guide rings are arranged on two sides of the third sealing ring.
4. The pneumatic diaphragm valve driving cylinder with guide structure of claim 3, wherein the side wall of the cylinder body contacting the valve rod is circumferentially provided with a second sealing groove matching with a second sealing ring, and the second sealing ring is arranged in the second sealing groove; second guide grooves matched with second guide rings are formed in the two sides of the second seal groove along the circumferential direction, and the second guide rings are arranged in the second guide grooves; a third sealing groove matched with a third sealing ring is formed in the circumferential direction of the side wall, in contact with the valve rod, of the cylinder cover, and the third sealing ring is arranged in the third sealing groove; and third guide grooves matched with third guide rings are formed in the two sides of the third seal groove along the circumferential direction, and the third guide rings are arranged in the third guide grooves.
5. The pneumatic diaphragm valve driving cylinder with guide structure of claim 1, wherein said piston is provided with a fourth sealing groove at a side wall connected with the valve stem, and a fourth sealing ring is provided in said fourth sealing groove.
6. The pneumatic diaphragm valve drive cylinder with guide structure of claim 1, wherein said valve stem is fixedly connected to the piston by a fixing nut provided on the valve stem.
7. The pneumatic diaphragm valve driving cylinder with guide structure of claim 1, wherein the end of said valve stem is provided with a limit nut, said limit nut limiting the moving distance of the valve stem.
8. The pneumatic diaphragm valve driving cylinder with guide structure of claim 1, wherein said cylinder block and cylinder head are engaged by steel balls and locked by screws.
9. The pneumatic diaphragm valve driving cylinder with guide structure of claim 8, wherein the cylinder block has a contact surface with the cylinder head having a plurality of positioning grooves arranged at equal intervals in the circumferential direction, the positioning grooves have a semicircular cross section matching the steel balls, the contact surface of the cylinder head with the cylinder block has an annular connecting groove arranged in the circumferential direction, the connecting groove has a semicircular cross section matching the steel balls, the connecting groove is arranged corresponding to the positioning grooves, the side wall of the cylinder head has a through locking groove, the locking groove is arranged corresponding to and communicating with the connecting groove, and when the cylinder head is rotated so that the locking groove faces the positioning grooves, the steel balls are engaged into the positioning groove and the connecting groove to connect the cylinder block and the cylinder head; the locking groove is provided with internal threads, and the screw is screwed into the locking groove to lock the steel ball.
10. The pneumatic diaphragm valve actuating cylinder with guide structure of claim 1, wherein said piston is made of metal and said first seal ring is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467697.9U CN214466491U (en) | 2021-03-04 | 2021-03-04 | Pneumatic diaphragm valve drives actuating cylinder with guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467697.9U CN214466491U (en) | 2021-03-04 | 2021-03-04 | Pneumatic diaphragm valve drives actuating cylinder with guide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214466491U true CN214466491U (en) | 2021-10-22 |
Family
ID=78152721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120467697.9U Active CN214466491U (en) | 2021-03-04 | 2021-03-04 | Pneumatic diaphragm valve drives actuating cylinder with guide structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214466491U (en) |
-
2021
- 2021-03-04 CN CN202120467697.9U patent/CN214466491U/en active Active
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