CN2544157Y - Quick pneumatic two-position cutting off valve - Google Patents
Quick pneumatic two-position cutting off valve Download PDFInfo
- Publication number
- CN2544157Y CN2544157Y CN 02241977 CN02241977U CN2544157Y CN 2544157 Y CN2544157 Y CN 2544157Y CN 02241977 CN02241977 CN 02241977 CN 02241977 U CN02241977 U CN 02241977U CN 2544157 Y CN2544157 Y CN 2544157Y
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- cylinder
- seal ring
- piston
- exhaust
- pneumatic
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Abstract
The utility model relates to the technical field of pneumatic control device when in industrial production, in particular to a rapid pneumatic two-way block valve. Aiming at the deficiencies existing pneumatic two-way block valve has, that is, short service life of a seal ring, hard detachment of the joint between a cylinder and a cylinder seat, between the cylinder seat and the valve body, the utility model provides a rapid pneumatic two-way block valve which has longer service life of the seal ring and quick detachment of the joint between a cylinder and a cylinder seat. The block valve consists of a pneumatic actuator and a valve body, wherein, the pneumatic actuator comprises a seal ring, a piston, a seal ring pressure plate, a cylinder, a sealing-plug, an exhausting piston, a compression spring, a valve stem and a cylinder seat. The utility model is characterized in that the seal ring is made of polytetrafluoroethylene, and the seal ring is provided with a spring groove which is internally provided with a compensating spring; the cylinder is installed on the cylinder seat as well as the cylinder and the cylinder seat are connected with each other in a latch-locked way; and the cylinder seat and the valve body are connected with each other in a hoop-joint way.
Description
Technical field
The utility model relates to air control unit technical field in the industrial processes, two cut-off valves of particularly a kind of fast pneumatic.
Background technique
The Pneumatic two-position cut-off valve is one of Automation Elements in the industrial processes, it is the actuator in the pneumatic unit combination instrument, the flowing medium in the pipeline is opened or cut off to the signal that it is supplied with according to control instrument, as steam, water, oil, gas body etc., to satisfy the requirement of system to process parameters such as temperature, pressure, flows.In use, owing to structural reason, existing Pneumatic two-position cut-off valve exists following deficiency:
1, the pneumatic actuator in the Pneumatic two-position cut-off valve, its air chamber seal ring is easy to wear, just needs to change in general about 6 months.
2, air chamber seal ring in the pneumatic actuator and the friction between the cylinder wall are bigger, influence the opening speed of valve, cause valve opening to lag behind.
3, connecting between cylinder and cylinder block, cylinder block and the valve body all adopted screw thread, Bolt Connection, during maintenance, is difficult for removing and installing.
4, long-range solenoid directional control valve need be installed in addition and carry out exhaust on the Pneumatic two-position cut-off valve, this has increased the workload of pipe leakage point and installation and maintenance on the one hand, slow because of exhaust pathway exhaust velocity far away on the other hand, the lag time that valve closing resets is long, has influence on the accuracy of process parameter.
Summary of the invention
The utility model provides a kind of seal ring long service life at the existing above-mentioned deficiency of existing Pneumatic two-position cut-off valve, and friction is little between seal ring and the cylinder wall; During maintenance, connecting and can remove and install fast between cylinder and cylinder block, cylinder block and the valve body; Can make two cut-off valves of fast pneumatic of the shortening lag time that exhaust velocity is accelerated, valve closing resets of pneumatic cut-off valve.
The technical solution adopted in the utility model is finished in the following way: two cut-off valves of fast pneumatic comprise pneumatic actuator and valve body, and wherein pneumatic actuator comprises seal ring, piston, seal ring pressing plate, cylinder, sealing plug, exhaust piston, pressure spring, valve rod, cylinder block.On cylinder, be provided with gas control signal inlet opening and exhaust cavity, sealing plug and exhaust piston are contained in the exhaust cavity successively, on exhaust cavity, have intake duct and intake and exhaust port, the gas control signal inlet opening of two cut-off valves of intake duct on the exhaust cavity and fast pneumatic communicates, intake duct is positioned at sealing plug one side of exhaust cavity horizontal axis, and the intake and exhaust port on the exhaust cavity communicates with the inner chamber of the cylinder of pneumatic actuator; Cylinder is contained on the cylinder block, and connecting between cylinder and the cylinder block adopts seizing type to connect; Connecting between cylinder block and the valve body adopts locking hood type to connect; Seal ring is fixed on piston crown by the seal ring pressing plate, and seal ring adopts polytetrafluoroethylmaterial material to make, and wherein has an annular spring groove on seal ring, is provided with counterbalance spring in spring groove; Piston is contained in the valve rod top, and pressure spring is enclosed within on the valve rod, and wherein the top of pressure spring withstands on the piston, and the bottom of pressure spring withstands on the inwall of cylinder block.During work, when input gas control signal, sealing plug moves to the exhaust piston direction rapidly under the effect of gas control signal air-flow, block the air outlet flue inlet on the exhaust piston, under gas pressure, make simultaneously the afterbody of sealing plug have generation contraction formation space, V-shaped groove place, then gas control signal air-flow just enters the inner chamber of pneumatic actuator rapidly by intake and exhaust port, and piston promotes valve rod and moves downward Open valve medium entry port under gas pressure.When medium has satisfied each process parameter requirement of system, then cut off input gas control signal, under the effect of the elastic force of pressure spring, piston drives valve rod and moves upward, the gas of pneumatic actuator inner chamber enters exhaust cavity by intake and exhaust port, make sealing plug move and block intake duct to the intake duct direction rapidly, the gas in the pneumatic actuator inner chamber is discharged rapidly by the air outlet flue on the exhaust piston.Action so again and again.Owing in the annular spring groove of seal ring, be provided with counterbalance spring, when wearing and tearing take place for it, have automatic compensation function, seal ring is closely contacted with the cylinder block inwall, continue to seal; In addition, the friction ractor of polytetrafluoroethylmaterial material is less, so seal ring is more wear-resisting, and long service life.Because connecting between cylinder and the cylinder block adopts seizing type to connect, as long as unclamp holding down bolt, cylinder rotated slightly, just can unload lower cylinder, keeps in repair quick and convenient.Because connecting between cylinder block and the valve body adopts locking hood type to connect, as long as after unclamping holding down bolt and clamping bolt, just can apace cylinder block and valve body be taken apart.
Two cut-off valves of the utility model fast pneumatic are compared with existing Pneumatic two-position cut-off valve, and it is little to have between seal ring long service life, seal ring and the cylinder wall friction; Connecting and to remove and install fast between cylinder and cylinder block, cylinder block and the valve body; Shortened the lag time that exhaust velocity is accelerated, valve closing resets of pneumatic cut-off valve, the channelling phenomenon of medium can not take place, can satisfy the characteristics of system quickly and accurately process parameter requirements such as pressure, temperature, flows.
Description of drawings
Fig. 1 is the structural representation of two cut-off valves of fast pneumatic.
Fig. 2 is the structural representation of seal ring.
Embodiment
Contrast accompanying drawing below, the utility model is described in further detail by embodiment.
With reference to accompanying drawing 1 and accompanying drawing 2, two cut-off valves of fast pneumatic comprise pneumatic actuator and valve body (1), wherein pneumatic actuator comprises seal ring (3), piston (4), seal ring pressing plate (5), cylinder (7), sealing plug (9), exhaust piston (12), pressure spring (14), valve rod (15), cylinder block (16), on cylinder (7), be provided with gas control signal inlet opening (8) and exhaust cavity (10), wherein, sealing plug (9) and exhaust piston (12) are contained in the exhaust cavity (10) successively, on exhaust piston (12), be provided with air outlet flue (11), the afterbody of sealing plug (9) has V-shaped groove, on exhaust cavity (10), have intake duct (6) and intake and exhaust port (13), the gas control signal inlet opening (8) of two cut-off valves of intake duct (6) and fast pneumatic on the exhaust cavity (10) communicates, intake duct (6) is positioned at sealing plug (9) one sides of exhaust cavity (10) horizontal axis, intake and exhaust port (13) on the exhaust cavity (10) communicates with the inner chamber of the cylinder (7) of pneumatic actuator, and intake and exhaust port (13) is positioned between the exhaust piston (12) and sealing plug (9) of exhaust cavity (10); Cylinder (7) is contained on the cylinder block (16), and connecting between cylinder (7) and the cylinder block (16) adopts seizing type to connect, and is provided with holding down bolt A (2) in the seizing type connection place; Connecting between cylinder block (16) and the valve body (1) adopts locking hood type to connect, and is provided with holding down bolt B (17) and clamping bolt (18) on anchor ear; Seal ring (3) is fixed on piston (4) head by seal ring pressing plate (5), and seal ring (3) adopts polytetrafluoroethylmaterial material to make, and wherein has an annular spring groove (20) on seal ring (3), is provided with counterbalance spring (19) in spring groove (20); Piston (4) is contained in valve rod (15) top, and pressure spring (14) is enclosed within on the valve rod (15), and wherein the top of pressure spring (14) withstands on the piston (4), and the bottom of pressure spring (14) withstands on the inwall of cylinder block (16).
Claims (4)
1, two cut-off valves of a kind of fast pneumatic, two cut-off valves of this fast pneumatic comprise pneumatic actuator and valve body (1), pneumatic actuator comprises seal ring (3), piston (4), seal ring pressing plate (5), cylinder (7), sealing plug (9), exhaust piston (12), pressure spring (14), valve rod (15), cylinder block (16), piston (4) is contained in valve rod (15) top, pressure spring (14) is enclosed within on the valve rod (15), wherein the top of pressure spring (14) withstands on the piston (4), the bottom of pressure spring (14) withstands on the inwall of cylinder block (16), it is characterized in that on cylinder (7), being provided with gas control signal inlet opening (8) and exhaust cavity (10), sealing plug (9) and exhaust piston (12) are contained in the exhaust cavity (10) successively, on exhaust piston (12), be provided with air outlet flue (11), the afterbody of sealing plug (9) has V-shaped groove, on exhaust cavity (10), have intake duct (6) and intake and exhaust port (13), the gas control signal inlet opening (8) of two cut-off valves of intake duct (6) and fast pneumatic on the exhaust cavity (10) communicates, intake duct (6) is positioned at sealing plug (9) one sides of exhaust cavity (10) horizontal axis, intake and exhaust port (13) on the exhaust cavity (10) communicates with the inner chamber of the cylinder (7) of pneumatic actuator, and intake and exhaust port (13) is positioned between the exhaust piston (12) and sealing plug (9) of exhaust cavity (10).
2, two cut-off valves of fast pneumatic according to claim 1, it is characterized in that seal ring (3) is fixed on piston (4) head by seal ring pressing plate (5), seal ring (3) adopts polytetrafluoroethylmaterial material to make, wherein on seal ring (3), have an annular spring groove (20), in spring groove (20), be provided with counterbalance spring (19).
3, two cut-off valves of fast pneumatic according to claim 1 and 2 is characterized in that cylinder (7) is contained on the cylinder block (16), and connecting between cylinder (7) and the cylinder block (16) adopts seizing type to connect, and is provided with holding down bolt A (2) in the seizing type connection place.
4, two cut-off valves of fast pneumatic according to claim 1 and 2 is characterized in that connecting between cylinder block (16) and the valve body (1) adopting locking hood type to connect, and are provided with holding down bolt B (17) and clamping bolt (18) on anchor ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02241977 CN2544157Y (en) | 2002-07-18 | 2002-07-18 | Quick pneumatic two-position cutting off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02241977 CN2544157Y (en) | 2002-07-18 | 2002-07-18 | Quick pneumatic two-position cutting off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2544157Y true CN2544157Y (en) | 2003-04-09 |
Family
ID=33714672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02241977 Expired - Lifetime CN2544157Y (en) | 2002-07-18 | 2002-07-18 | Quick pneumatic two-position cutting off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2544157Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943277A (en) * | 2010-08-13 | 2011-01-12 | 陆桂义 | Pneumatic two-position four-way slide valve |
| CN101952629B (en) * | 2007-11-08 | 2013-03-20 | 意大利R.P.E.有限公司 | On-off flow valve |
| CN108326759A (en) * | 2018-02-09 | 2018-07-27 | 无锡大明阀门自控设备有限公司 | A kind of pneumatic sand blasting valve |
-
2002
- 2002-07-18 CN CN 02241977 patent/CN2544157Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101952629B (en) * | 2007-11-08 | 2013-03-20 | 意大利R.P.E.有限公司 | On-off flow valve |
| CN101943277A (en) * | 2010-08-13 | 2011-01-12 | 陆桂义 | Pneumatic two-position four-way slide valve |
| CN108326759A (en) * | 2018-02-09 | 2018-07-27 | 无锡大明阀门自控设备有限公司 | A kind of pneumatic sand blasting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120718 Granted publication date: 20030409 |