CN214466490U - Pneumatic diaphragm valve with steel ball connection structure - Google Patents
Pneumatic diaphragm valve with steel ball connection structure Download PDFInfo
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- CN214466490U CN214466490U CN202120467696.4U CN202120467696U CN214466490U CN 214466490 U CN214466490 U CN 214466490U CN 202120467696 U CN202120467696 U CN 202120467696U CN 214466490 U CN214466490 U CN 214466490U
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Abstract
The utility model discloses a pneumatic diaphragm valve with steel ball connection structure, including driving actuating cylinder, it includes the cylinder block to drive actuating cylinder, 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 one end of valve rod runs through the cylinder block and is connected to the case, the other end of valve rod is connected to the pilot lever, pilot lever sliding connection is to the cylinder head, be connected through the steel ball embedding and lock through the screw between valve gap and cylinder block and cylinder head and the cylinder block. The utility model has the advantages that the steel ball is used for connecting the cylinder cover and the cylinder body and connecting the cylinder body and the valve cover, the connecting force is large, the size of the cylinder and the whole volume of the valve are reduced, the mounting space required by the valve is reduced, and meanwhile, the embedded connection of the steel ball improves the finish degree of the outer surfaces of the cylinder cover, the cylinder body and the valve cover, so that dust is not easy to accumulate; the device has the characteristics of simple structure, small installation space and small energy loss.
Description
Technical Field
The utility model relates to a diaphragm valve especially relates to a pneumatic diaphragm valve with steel ball connection structure.
Background
The diaphragm valve is the biggest difference from other valves: a non-stuffing box structure is adopted; the membrane makes the corrosive medium in the flow passage and all the driving parts in a completely isolated state, thereby avoiding the defects of 'running, overflowing, dripping, leaking' and the like of the common valve. The diaphragm valve has smooth flow passage and small flow resistance, so that larger flow can be obtained. Because the sealing element is a rubber diaphragm with rich elasticity. Thus also having a better tightness and a minimum closing force. The diaphragm valve consists of a valve body, a valve cover, a valve core, a valve rod, a diaphragm and a driving part. The opening and closing of the pneumatic diaphragm valve are realized by supplying or cutting off air to the air cylinder by an air source. When air is supplied, the valve clack drives the diaphragm to ascend to open the passage; when the air is lost, the valve is closed.
However, the conventional pneumatic diaphragm valve has a disadvantage: because the cylinder, the cylinder cover and the valve cover of the common pneumatic diaphragm valve are usually connected by bolts, studs or threads, the appearance of the cylinder is larger and the overall size of the valve is larger, so that the installation space required by the valve is larger, and the field installation is not facilitated.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a pneumatic diaphragm valve with steel ball connection structure connects cylinder head and cylinder block and is connected cylinder block and valve gap through the steel ball, reduces the whole volume of cylinder size and valve, has reduced the required installation space of valve.
The technical scheme adopted by the utility model to solve the technical problems is to provide a pneumatic diaphragm valve with a steel ball connecting structure, which comprises a valve body, a valve rod and a valve cover, wherein the valve rod capable of moving up and down is arranged in the valve body; the upper end of the valve rod is connected with a driving cylinder, the lower end of the valve rod penetrates through a valve cover to be connected with a valve core, a diaphragm which hermetically separates the valve core from a conveying cavity is arranged between the valve core and the medium conveying cavity of the valve, and the valve core is fixedly connected with the center of the diaphragm; the driving cylinder comprises a cylinder body, 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, one end of the valve rod penetrates through the cylinder body and is connected to a valve core, the other end of the valve rod is connected to an indicating rod, the indicating rod is connected to the cylinder cover in a sliding mode, a spring is arranged between the piston and the cylinder cover, and the valve cover and the cylinder body and the cylinder cover and the cylinder body are connected through steel balls in an embedded mode and locked through screws.
Further, the valve cover and the cylinder body are embedded into the side wall, in contact with the cylinder body, of the valve cover through a first steel ball and are connected, and the first steel ball is locked through a first screw; the cylinder cover and the cylinder body are embedded into the side wall of the cylinder cover, which is in contact with the cylinder body, through a second steel ball for connection, and the second steel ball is locked through a second screw.
Furthermore, a plurality of first positioning grooves are formed in the contact surface of the cylinder body and the valve cover at equal intervals along the circumferential direction, the cross section of each first positioning groove is semicircular and matched with a first steel ball, an annular first connecting groove is formed in the contact surface of the valve cover and the cylinder body along the circumferential direction, the cross section of each first connecting groove is semicircular and matched with the first steel ball, the first connecting groove and the first positioning groove are correspondingly arranged, a first through locking groove is formed in the side wall of the valve cover, the first locking groove and the first connecting groove correspond to each other and are communicated with each other, the inner diameter of the first locking groove is matched with the diameter of the first steel ball, and when the cylinder body is rotated to enable the first locking groove and the first positioning groove to be correspondingly arranged, the first steel ball is clamped into the first positioning groove and the first connecting groove through the first locking groove to connect the cylinder body and the cylinder cover; the first locking groove is provided with internal threads, and the first screw is screwed into the first locking groove to lock the first steel ball.
Furthermore, a plurality of second 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 second positioning groove is semicircular and matched with a second steel ball, an annular second 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 second connecting groove is semicircular and matched with the second steel ball, the second connecting grooves and the second positioning grooves are correspondingly arranged, a through second locking groove is formed in the side wall of the cylinder cover, the second locking groove corresponds to and is communicated with the second connecting groove, the inner diameter of each second locking groove is matched with the diameter of the second steel ball, and when the cylinder cover is rotated to enable the second locking grooves and the second positioning grooves to be correspondingly arranged, the second steel balls are clamped into the second positioning grooves and the second connecting grooves through the second locking grooves to be connected with the cylinder body and the valve cover; the second locking groove is provided with internal threads, and the second screw is screwed into the second locking groove to lock the second steel ball.
Further, a first sealing ring is arranged on the contact surface of the cylinder body and the valve rod, and guide rings are arranged on two sides of the first sealing 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 valve rod, of the cylinder body, and the first sealing ring is arranged in the first sealing groove; the both sides of first seal groove are provided with the guide way that matches with the guide ring along circumference, the guide ring sets up in the guide way.
Further, a second sealing groove is formed in the circumferential direction of the side wall, in contact with the cylinder block, of the piston, and a second sealing ring is arranged in the second sealing groove.
Further, the piston is provided with a third seal groove in the lateral wall of being connected with the valve rod, be provided with the third sealing washer in the third seal groove.
The utility model discloses contrast prior art has following beneficial effect: the pneumatic diaphragm valve with the steel ball connecting structure, provided by the utility model, has the advantages that the cylinder cover and the cylinder body are connected through the steel balls, the cylinder body and the valve cover are connected through the steel balls, the connecting force is large, the size of the cylinder and the overall size of the valve are effectively reduced, the mounting space required by the valve is reduced, and meanwhile, the embedded connection of the steel balls improves the finish degree of the outer surfaces of the cylinder cover, the cylinder body and the valve cover, so that dust is not easy to accumulate; the device has the characteristics of simple structure, small installation space and small energy loss; the volume of the cylinder is reduced, the weight is reduced, and the cost is reduced.
Drawings
Fig. 1 is a schematic view of the connection between the cylinder head and the cylinder block and the connection between the cylinder block and the valve cover of the pneumatic diaphragm valve having the steel ball connection structure in the embodiment of the present invention.
In the figure:
1. a valve cover; 2. a first screw; 3. a first steel ball; 4. a valve stem; 5. a first seal ring; 6. a second seal ring; 7. a piston; 8. a third seal ring; 9. a cylinder block; 10. a second screw; 11. a second steel ball; 12. a cylinder head; 13. a spring; 14. and a guide ring.
Detailed Description
The invention is further described with reference to the following figures and examples.
Fig. 1 is a schematic view of the connection between the cylinder head and the cylinder block and the connection between the cylinder block and the valve cover of the pneumatic diaphragm valve having the steel ball connection structure in the embodiment of the present invention.
Referring to fig. 1, the pneumatic diaphragm valve with a steel ball connecting structure according to an embodiment of the present invention includes a valve body, a valve rod, and a valve cover 1, wherein the valve rod capable of moving up and down is disposed in the valve body; the upper end of the valve rod is connected with a driving cylinder, the lower end of the valve rod penetrates through a valve cover 1 to be connected with a valve core, a diaphragm which hermetically separates the valve core from a conveying chamber is arranged between the valve core and the medium conveying chamber of the valve, and the valve core is fixedly connected with the center of the diaphragm; the driving cylinder comprises a cylinder block 9, the cylinder block 9 is closed through a cylinder cover 12, a piston 7 is arranged in the cylinder block 9, a valve rod 4 is fixedly arranged in the center of the piston 7, one end of the valve rod 4 penetrates through the cylinder block 9 to be connected to a valve core, the other end of the valve rod 4 is connected to an indicating rod, the indicating rod is connected to the cylinder cover 12 in a sliding mode, a spring 13 is arranged between the piston 7 and the cylinder cover 12, and the valve cover 1 and the cylinder block 9 and the cylinder cover 12 and the cylinder block 9 are connected in an embedded mode through steel balls and locked through screws.
Specifically, the valve cover 1 and the cylinder block 9 are embedded into the side wall of the valve cover 1, which is in contact with the cylinder block 9, through a first steel ball 3 for connection, and the first steel ball 3 is locked through a first screw 2; the cylinder head 12 and the cylinder block 9 are connected by embedding a second steel ball 11 into the side wall of the cylinder head 12, which is in contact with the cylinder block 9, and the second steel ball 11 is locked by a second screw 10.
Specifically, the contact surface of the cylinder block 9 and the valve cover 1 is provided with a plurality of first positioning grooves at equal intervals along the circumferential direction, the section of the first positioning groove is semicircular and matched with the first steel ball 3, the contact surface of the valve cover 1 and the cylinder body 9 is provided with an annular first connecting groove along the circumferential direction, the section of the first connecting groove is semicircular and matched with the first steel ball 3, the first connecting groove is arranged corresponding to the first positioning groove, the side wall of the valve cover 1 is provided with a first through locking groove which is corresponding to and communicated with the first connecting groove, the inner diameter of the first locking groove is matched with the diameter of the first steel ball 3, when the cylinder body 9 is rotated to enable the first locking groove and the first positioning groove to be correspondingly arranged, the first steel ball 3 is clamped into the first positioning groove and the first connecting groove through the first locking groove to be connected with the cylinder body 9 and the valve cover 1; the first locking groove is provided with internal threads, and the first screw 2 is screwed into the first locking groove to lock the first steel ball 3.
Specifically, the contact surface of the cylinder block 9 and the cylinder head 12 is provided with a plurality of second positioning grooves at equal intervals in the circumferential direction, the section of the second positioning groove is semicircular and matched with the second steel ball 11, the contact surface of the cylinder cover 12 and the cylinder body 9 is provided with an annular second connecting groove along the circumferential direction, the section of the second connecting groove is semicircular and matched with the second steel ball 11, the second connecting groove is arranged corresponding to the second positioning groove, the side wall of the cylinder cover 12 is provided with a through second locking groove which is corresponding to and communicated with the second connecting groove, the inner diameter of the second locking groove is matched with the diameter of the second steel ball 11, when the cylinder cover 12 is rotated to enable the second locking groove and the second positioning groove to be correspondingly arranged, the second steel ball 11 is clamped into the second positioning groove and the second connecting groove through the second locking groove to be connected with the cylinder body 9 and the cylinder cover 12; the second locking groove is provided with internal threads, and the second screw 10 is screwed into the second locking groove to lock the second steel ball 11.
Specifically, a first sealing ring 5 is arranged on the contact surface of the cylinder block 9 and the valve rod 4, and guide rings 14 are arranged on two sides of the first sealing ring 5; a first sealing groove matched with the first sealing ring 5 is formed in the circumferential direction of the side wall, in contact with the valve rod 4, of the cylinder block 9, and the first sealing ring 5 is arranged in the first sealing groove; guide grooves matched with the guide rings 14 are formed in the two sides of the first sealing groove in the circumferential direction, and the guide rings 14 are arranged in the guide grooves. The side wall of piston 7 and cylinder block 9 contact is provided with the second seal groove along circumference, be provided with second sealing washer 6 in the second seal groove.
Preferably, the piston 7 is provided with a third sealing groove on the side wall connected with the valve rod 4, and a third sealing ring 8 is arranged in the third sealing groove.
The pneumatic diaphragm valve with the steel ball connecting structure provided by the embodiment of the utility model aligns the first positioning groove of the cylinder body 9 with the first connecting groove of the valve cover 1 during actual installation; the cylinder body 9 is rotated to enable the first positioning grooves and the first locking grooves to be correspondingly arranged, the first steel balls 3 are sequentially placed into the first positioning grooves and the first connecting grooves, the cylinder body 9 is connected with the valve cover 1, then the first screws 2 are screwed into the first locking grooves, and the first steel balls 3 are locked; aligning the second positioning groove of the cylinder block 9 with the second connecting groove of the cylinder head 12; rotating the cylinder cover 12 to enable the second positioning grooves and the second locking grooves to be correspondingly arranged, sequentially placing the second steel balls 11 into the plurality of second positioning grooves and the second connecting grooves, connecting the cylinder body 9 with the cylinder cover 12, screwing the second screws 10 into the second locking grooves, and locking the second steel balls 11; the valve cover 1 and the cylinder body 9 are tightly connected, the cylinder body 9 and the cylinder cover 12 are tightly connected, bolt or thread connection is effectively avoided, and the overall size and weight of the equipment are reduced; meanwhile, the embedded connection of the steel balls improves the finish degree of the outer surfaces of the valve cover 1, the cylinder body 9 and the cylinder cover 12.
To sum up, the pneumatic diaphragm valve with the steel ball connection structure provided by the embodiment of the utility model connects the cylinder cover 12 and the cylinder body 9 and connects the cylinder body 9 and the valve cover 1 through the steel ball, the connection force is large, the size of the cylinder and the overall volume of the valve are effectively reduced, the installation space required by the valve is reduced, and meanwhile, the embedded connection of the steel ball improves the surface finish of the cylinder cover 12, the cylinder body 9 and the valve cover 1, and dust is not easy to accumulate; the device has the characteristics of simple structure, small installation space and small energy loss; the volume of the cylinder is reduced, the weight is reduced, and the cost is reduced.
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 (8)
1. A pneumatic diaphragm valve with a steel ball connecting structure is characterized by comprising a valve body, a valve rod and a valve cover, wherein the valve rod capable of moving up and down is arranged in the valve body; the upper end of the valve rod is connected with a driving cylinder, the lower end of the valve rod penetrates through a valve cover to be connected with a valve core, a diaphragm which hermetically separates the valve core from a conveying cavity is arranged between the valve core and the medium conveying cavity of the valve, and the valve core is fixedly connected with the center of the diaphragm; the driving cylinder comprises a cylinder body, 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, one end of the valve rod penetrates through the cylinder body and is connected to a valve core, the other end of the valve rod is connected to an indicating rod, the indicating rod is connected to the cylinder cover in a sliding mode, a spring is arranged between the piston and the cylinder cover, and the valve cover and the cylinder body and the cylinder cover and the cylinder body are connected through steel balls in an embedded mode and locked through screws.
2. The pneumatic diaphragm valve with the steel ball connection structure of claim 1, wherein the valve cover is connected with the cylinder block by embedding a first steel ball into a side wall of the valve cover, which is in contact with the cylinder block, and the first steel ball is locked by a first screw; the cylinder cover and the cylinder body are embedded into the side wall of the cylinder cover, which is in contact with the cylinder body, through a second steel ball for connection, and the second steel ball is locked through a second screw.
3. The pneumatic diaphragm valve having a steel ball attachment structure of claim 2, a plurality of first positioning grooves are arranged on the contact surface of the cylinder body and the valve cover at equal intervals along the circumferential direction, the cross section of each first positioning groove is in a semicircular shape matched with the first steel ball, the contact surface of the valve cover and the cylinder body is circumferentially provided with an annular first connecting groove, the section of the first connecting groove is in a semicircular shape matched with the first steel ball, the first connecting groove is arranged corresponding to the first positioning groove, the side wall of the valve cover is provided with a first through locking groove, the first locking groove is corresponding to and communicated with the first connecting groove, the inner diameter of the first locking groove is matched with the diameter of the first steel ball, when the cylinder body is rotated to enable the first locking groove to be corresponding to the first positioning groove, the first steel ball is clamped into the first positioning groove and the first connecting groove through the first locking groove to be connected with the cylinder body and the valve cover; the first locking groove is provided with internal threads, and the first screw is screwed into the first locking groove to lock the first steel ball.
4. The pneumatic diaphragm valve having a steel ball attachment structure of claim 2, a plurality of second positioning grooves are arranged on the contact surface of the cylinder body and the cylinder cover at equal intervals along the circumferential direction, the cross section of each second positioning groove is in a semicircular shape matched with the second steel ball, the contact surface of the cylinder cover and the cylinder body is provided with an annular second connecting groove along the circumferential direction, the section of the second connecting groove is in a semicircular shape matched with the second steel ball, the second connecting groove is arranged corresponding to the second positioning groove, the side wall of the cylinder cover is provided with a second through locking groove, the second locking groove is communicated with the second connecting groove, the inner diameter of the second locking groove is matched with the diameter of the second steel ball, when the cylinder cover is rotated to enable the second locking groove to be correspondingly arranged with the second positioning groove, the second steel ball is clamped into the second positioning groove and the second connecting groove through the second locking groove to connect the cylinder body and the cylinder cover; the second locking groove is provided with internal threads, and the second screw is screwed into the second locking groove to lock the second steel ball.
5. The pneumatic diaphragm valve having a steel ball coupling structure as claimed in claim 1, wherein a first sealing ring is provided on a contact surface of the cylinder block and the valve stem, and a guide ring is provided on both sides of the first sealing ring.
6. The pneumatic diaphragm valve with the steel ball connection structure according to claim 5, wherein a first sealing groove matched with a first sealing ring is circumferentially provided in a side wall of the cylinder block, which is in contact with the valve rod, and the first sealing ring is disposed in the first sealing groove; the both sides of first seal groove are provided with the guide way that matches with the guide ring along circumference, the guide ring sets up in the guide way.
7. The pneumatic diaphragm valve having a steel ball connection structure of claim 1, wherein a second sealing groove is circumferentially provided in a side wall of the piston contacting the cylinder block, and a second sealing ring is provided in the second sealing groove.
8. The pneumatic diaphragm valve having a steel ball coupling structure of claim 1, wherein the piston is provided with a third seal groove in a side wall connected to the valve stem, and a third seal ring is provided in the third seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467696.4U CN214466490U (en) | 2021-03-04 | 2021-03-04 | Pneumatic diaphragm valve with steel ball connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467696.4U CN214466490U (en) | 2021-03-04 | 2021-03-04 | Pneumatic diaphragm valve with steel ball connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214466490U true CN214466490U (en) | 2021-10-22 |
Family
ID=78152713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120467696.4U Active CN214466490U (en) | 2021-03-04 | 2021-03-04 | Pneumatic diaphragm valve with steel ball connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214466490U (en) |
-
2021
- 2021-03-04 CN CN202120467696.4U patent/CN214466490U/en active Active
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