CN203614807U - Double-blocking valve base - Google Patents
Double-blocking valve base Download PDFInfo
- Publication number
- CN203614807U CN203614807U CN201320780520.XU CN201320780520U CN203614807U CN 203614807 U CN203614807 U CN 203614807U CN 201320780520 U CN201320780520 U CN 201320780520U CN 203614807 U CN203614807 U CN 203614807U
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- air chamber
- adjusting screw
- piston
- valve
- cylinder
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- Withdrawn - After Issue
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Abstract
The utility model provides a double-blocking valve base. The double-blocking valve base comprises a pneumatic actuator; the pneumatic actuator is formed by a group of closed air cylinders which are formed by upper covers and lower covers in a combination mode; a piston separates the air cylinders into an upper air chamber and a lower air chamber; the two air chambers are inflated air or discharged air through an upper air nozzle and a lower air nozzle; the piston vertically moves under the inflation pressure of the air nozzles. The double-blocking valve base is characterized in that moving shafts at two ends of the piston, first sealing rings (04u and 04d) and second sealing rings are formed into a moving shaft air chamber; gases inside the air cylinders are discharged through the moving shaft air chamber. The double-blocking valve base has the advantages of enabling the piston of the pneumatic actuator to be blocked during the moving process in a bidirectional mode, namely enabling the valve base and a valve element to be blocked during the moving process, reducing the impact force to the valve base from the valve element, having a buffering function at the moment when the valve element and the valve base are in contact, protecting the valve element, the sealing rings and the valve base from being damaged due to the impact force, meanwhile reducing noise and prolonging the product service life.
Description
Technical field
The utility model relates to a kind of fluidic device for beverage, food, medicine or biological technology products, particularly the two final controlling element that stop in fluidic device.
Background technique
Seat valve in the market, its final controlling element cylinder major part is all made up of upper and lower covers, Integral sealing, the piston of the inside is divided into two air chambers cylinder, double-acting cylinder air chamber is by two valve inflations and exhaust, single-acting is by a valve inflation and exhaust, another valve is substituted by baffler, by the spring reset in cylinder, if when a valve inflation, piston is bullied to press off and is begun to move, gas is directly discharged by another valve, in gas purging path, any resistance that adds in advance is not set, gas is discharged rapidly, be not subject to any resistance, the spool impact force that causes thus piston to connect is large, impact force causes spool, seal spool packing ring, valve body all may injure, affect working life, powerful impact force also can be brought mechanicalness noise simultaneously, cause ambient noise to pollute, equally, single cylinder spring reset, the elastic force of spring also makes piston move rapidly, produce too very strong impact force, cause above-mentioned same result.
Model utility content
For the deficiencies in the prior art, the utility model provide a kind of noise little, operate steadily, two valve seats that stop of long service life, its valve seat spool is moving up and down while reaching respectively two mobile terminals in process, spool speed is stoped immediately, reduce valve core seal ring and valve seat impact force, spool operates steadily, increases seal ring working life; And can be with low cost manufacture, be easy to install, the safe and reliable seat valve that is applied to, and can be general or the conventional final controlling element of alternative seat valve.
In order to solve the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of two-way prevention valve, comprise pneumatic actuator, pneumatic actuator is synthesized the one group of cylinder that forms together sealing by upper and lower covers, cylinder is divided into upper and lower two air chambers by piston, by two chamber inflateds of upper and lower two valves difference and exhaust, piston moves up and down under valve inflation pressure, piston two ends shifting axle and the first seal ring and the second seal ring form a shifting axle air chamber, gas in cylinder discharges by this air chamber all the time, in addition, final controlling element cylinder is provided with upper and lower two adjusting screw, at least one O type circle of adjusting screw band, when displacement, remain sealing, adjusting screw is fixed in cylinder upper and lower covers, but directional movable, adjusting screw and upper and lower covers connecting thread gap form an adjusting screw air chamber, adjusting screw head is conical surface, coordinate with cylinder block upper and lower covers cone shape hole face respectively, form a taper air chamber, moving taper air chamber space size with the position of adjusting screw also changes, air displacement size also changes, in adjusting screw, be with O type circle, make adjusting screw position change time all the time in sealing, piston two ends shifting axle respectively with the second seal ring and the first seal ring composition shifting axle air chamber, gas can be by therebetween, meanwhile, adjusting screw air chamber communicates with an aperture of the upper and lower chamber of cylinder, and adjusting screw air chamber and shifting axle air chamber are also provided with an aperture, and the each conical surface aperture of cylinder block upper and lower covers, is provided with an aperture between shifting axle air chamber and valve air chamber, cylinder air chamber like this, adjusting screw air chamber communicates with valve air chamber all the time with piston two ends shifting axle air chamber.
Pneumatic actuator is connected with at least one valve seat, and is controlling the folding of valve seat.
The beneficial effects of the utility model: realized two-way being obstructed in pneumatic actuator piston moving process; that is to say two-way being obstructed in valve seat spool moving process; reduce spool to valve seat impact force; play buffer function at spool and valve seat by Contact; the injury of having protected spool, seal ring and valve seat to bring because of impact force; simultaneously also reduce noise, extended product working life.
Accompanying drawing explanation
Fig. 1 is the configuration state figure of valve seat while closing;
Fig. 2 is the configuration state figure of valve seat while opening.
Embodiment
As two valve seat final controlling element parts that stop in Fig. 1, the pneumatic actuator of two prevention valve seats forms cylinder by airtight upper and lower covers, piston 05 is divided into two two airtight air chambers cylinder, wherein piston packing 07 and cylinder head remain sealing, the upper and lower covers of cylinder is respectively with a valve 03u, 03d, function is to two chamber inflateds of cylinder and exhaust, piston 05 is at valve 03u, the rotation inflation of 03d, under exhaust air pressure, move back and forth up and down, the valve seat spool 16 being connected with piston 05 moves as synchronous reciprocating thereupon, thereby realize spool 16 and valve seat 17u, switching function between 17d, realize the control to valve.
The final controlling element of seat valve is the body of the sealing of being synthesized by upper and lower covers, and body is separated into upper and lower two air chambers by piston, and two- piston seal ring 06,07 function is seal action.
When piston moves, have two paths exhausts, Article 1 is to shifting axle air chamber 12u, 12d to valve air chamber 14u, 14d to valve 03u, 03d by the first seal ring 04u, 04d endoporus; Article 2 is to adjusting screw air chamber 13u, 13d to taper air chamber 02u, 02d to shifting axle air chamber 12u, 12d to valve air chamber 14u, 14d to valve 3u, 3d by aperture 09u, 09d.
In the time that piston starts to move down, the first seal ring 04d is not airtight, the gas of piston can arrive valve by two paths discharges, and in the time that piston moves to bottom, piston shaft end 06d contacts beginning with the first seal ring 04u airtight, under piston, gas can not enter shifting axle air chamber 12d by the first seal ring 04d endoporus, and can only arrive valve by the discharge of Article 2 path; Otherwise piston moves up, its process with order with to move down process identical.
Cylinder top and the end, have at least one aperture 09u, 09d, allow piston gas communicate with adjusting screw air chamber 13u, 13d, air chamber 13u simultaneously, between 13d and shifting axle air chamber 12u, 12d, also communicate by least one aperture, shifting axle air chamber 12u, 12d and valve air chamber 14u, also communicate by least one aperture between 14d.
On adjusting screw 01u, 01d, be with at least one O type circle 08u, 08d, make adjusting screw 01u, 01d all the time with cylinder block in sealing, adjusting screw 01u, 01d and cylinder block are threaded connection, make adjusting screw energy displacement, but keep relatively fixing, and can not depart from cylinder block, the thread pitch simultaneously connecting forms again adjusting screw air chamber 13u, the 13d of one, gas can be from passing through therebetween, has at least one aperture 09u, 09d to communicate with piston cavity on adjusting screw air chamber 13u, 13d.
Between piston two ends shifting axle and cylinder block, form shifting axle air chamber 12u, a 12d, this air chamber is respectively equipped with the first seal ring 04u, 04d and the second seal ring 05u, 05d up and down, wherein the second seal ring 05u, 05d remain sealing, and shifting axle air chamber 12u, 12d gas are not leaked.
Between adjusting screw air chamber 13u, 13d and shifting axle air chamber 12u, 12d, there is an aperture to communicate, between shifting axle air chamber 12u, 12d and valve air chamber 14u, 14d, also have an aperture to communicate.
In the time that valve 03u inflates, piston pressurized is forced to start to move down, and as Fig. 2, gas purging path is in cylinder: Article 1 be through the first seal ring 04d endoporus to air chamber 12d again to valve air chamber 14d to valve 03d; Article 2 is to adjusting screw air chamber 13u, 13d to taper air chamber 02u, 02d to air chamber 12u, 12d to valve air chamber 14u, 14d to valve 3u, 3d by aperture 09u, 09d, Article 1, path clearance is large, and path is broad, and gas discharging is smooth and easy, gas discharging is fast, and piston traveling speed is fast.When continuation inflation piston moves to cylinder bottom (Fig. 1), piston bottom shifting axle inclined-plane 06d contacts with the first seal ring 04d, bottom shifting axle air chamber 12d is formed to sealing, gas gas in the jar can not pass through from the first seal ring 04d endoporus, Article 1, emission path is closed, so, the remaining Article 2 of exhaust pathway of gas gas in the jar, pass through bottom aperture 09d to adjusting screw air chamber 13d to adjusting screw conical surface air chamber 02d to shifting axle air chamber 12d to valve air chamber 14d to valve 03d, but when cylinder gas is passed through adjusting screw air chamber 02d, be subject to the gap control of this air chamber, adjusting screw 01u, 01d head design is taper 02u, 02d, coordinate with the upper and lower cone shape hole face of cylinder block respectively, its gap is very little, air displacement is limited, piston is obstructed immediately, its speed is immediately by reducing soon, taper air chamber 02u, the gap length of 02d has determined the discharge amount of cylinder gas, adjusting screw 01u, the 01d large air displacement in gap that moves to left is large, piston moves faster, adjusting screw 01u, the 01d little exhaust in gap that moves to right is little, piston moves slower.Piston traveling speed can be subject to the control of discharge amount, and in the whole folding process of piston, speed can be from fast to slow even for leveling off to zero, until piston end surface shifting axle contacts with the bottom surface of cylinder block.Otherwise in the time that valve 03d inflates, its control procedure is identical with valve 03u ventilating control process, just opposite direction (Fig. 2).
Described two prevention seat valves have two adjusting screw 01u at least, 01d conical surface and cylinder upper and lower covers form taper air chamber 02u, 02d, taper air chamber 02u, the spatial volume of 02d changes with the change of adjusting screw position, two adjusting screw 01u, energy displacement between 01d and cylinder upper and lower covers, and and cylinder upper and lower covers keeps being relatively fixed, the utility model two screws uses are threaded fixing, two adjusting screw 01u, between 01d and cylinder upper and lower covers, must remain certain interval, form an adjusting screw air chamber 13u, 13d, air chamber of the present utility model is the gap between connecting thread, at least one O type circle of adjusting screw band, when displacement, remain sealing, allow adjusting screw air chamber 13u, gas in 13d is not revealed.
Final controlling element piston two ends shifting axle respectively with the second seal ring 05u, 05d and the first seal ring 04u, 04d composition shifting axle air chamber 12u, 12d, this air chamber forms one of gas discharge approach in cylinder
The spatial volume of taper air chamber 02u, 02d changes with the change of adjusting screw position;
Can displacement between adjusting screw 01u, 01d and cylinder upper and lower covers, and and cylinder upper and lower covers between keep being relatively fixed.Between adjusting screw 01u, 01d and cylinder upper and lower covers, must remain certain interval, form adjusting screw air chamber 13u, a 13d, gas is by therebetween.
In shifting axle air chamber 12u, 12d; while being that piston starts to move down, the first seal ring 04d is not airtight; the gas of piston can enter shifting axle air chamber 12d by this first seal ring 04d endoporus; and in the time that piston moves to bottom; pistons end shifting axle 06d contacts beginning with the first seal ring 04u airtight, and the gas of piston can not enter shifting axle air chamber 12d by the first seal ring 04d endoporus; Otherwise piston moves up, its process is identical with above-mentioned principle.
Cylinder top and the end, have at least one aperture 09u, 09d, allow piston gas communicate with adjusting screw air chamber 13u, 13d, between adjusting screw air chamber 13u, 13d and shifting axle air chamber 12u, 12d, also communicate by least one aperture simultaneously, between shifting axle air chamber 12u, 12d and valve air chamber 14u, 14d, also communicate by least one aperture.
Claims (2)
1. a two-way prevention valve, comprise pneumatic actuator, pneumatic actuator is synthesized the one group of cylinder that forms together sealing by upper and lower covers, cylinder is divided into upper and lower two air chambers by piston (05), by upper and lower two valve (03u, 03d) two chamber inflateds of difference and exhaust, piston (05) is at valve (03u, 03d) under inflation pressure, move up and down, it is characterized in that, piston two ends shifting axle and the first seal ring (04u, 04d) He the second seal ring (05u, 05d) form a shifting axle air chamber (12u, 12d), gas in cylinder discharges by this air chamber all the time, in addition, final controlling element cylinder is provided with upper and lower two adjusting screw (01u, 01d), at least one O type circle of adjusting screw band, when displacement, remain sealing, adjusting screw is fixed in cylinder upper and lower covers, but directional movable, adjusting screw and upper and lower covers connecting thread gap form an adjusting screw air chamber (13u, 13d), adjusting screw (01u, 01d) head is conical surface, coordinate with cylinder block upper and lower covers cone shape hole face respectively, form a taper air chamber (02u, 02d), with adjusting screw (01u, taper air chamber (02u is moved in position 01d), 02d) space size also changes, air displacement size also changes, adjusting screw (01u, 01d) upper band O type circle (08u, 08d), make adjusting screw (01u, 01d) position change time all the time in sealing, piston two ends shifting axle respectively with the second seal ring (05u, 05d) and the first seal ring (04u, 04d) composition shifting axle air chamber (12u, 12d), gas can be by therebetween, simultaneously, adjusting screw air chamber (13u, 13d) communicate with an aperture (09u, 09d) of the upper and lower chamber of cylinder, adjusting screw air chamber (13u, 13d) with shifting axle air chamber (12u, 12d) be also provided with an aperture, i.e. the each conical surface aperture of cylinder block upper and lower covers, shifting axle air chamber (12u, 12d) and between valve air chamber (14u, 14d), be provided with an aperture, cylinder air chamber like this, adjusting screw air chamber (13u, 13d) communicates all the time with piston two ends shifting axle air chambers (12u, 12d) and valve air chamber (14u, 14d).
2. according to claim 1 pair of prevention valve, is characterized in that, pneumatic actuator is connected with at least one valve seat, and is controlling the folding of valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320780520.XU CN203614807U (en) | 2013-12-02 | 2013-12-02 | Double-blocking valve base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320780520.XU CN203614807U (en) | 2013-12-02 | 2013-12-02 | Double-blocking valve base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614807U true CN203614807U (en) | 2014-05-28 |
Family
ID=50767455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320780520.XU Withdrawn - After Issue CN203614807U (en) | 2013-12-02 | 2013-12-02 | Double-blocking valve base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672022A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Bidirectional blocking valve seat |
| CN108351041A (en) * | 2015-11-09 | 2018-07-31 | 克马蒂克公司 | Multifunctional sanitary valve and its operating method |
-
2013
- 2013-12-02 CN CN201320780520.XU patent/CN203614807U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672022A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Bidirectional blocking valve seat |
| CN108351041A (en) * | 2015-11-09 | 2018-07-31 | 克马蒂克公司 | Multifunctional sanitary valve and its operating method |
| CN108351041B (en) * | 2015-11-09 | 2019-11-12 | 海爵有限公司 | Multifunctional sanitary valve and its operating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |