CN202733130U - Pneumatic valve capable of regulating opening and closing speeds - Google Patents
Pneumatic valve capable of regulating opening and closing speeds Download PDFInfo
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- CN202733130U CN202733130U CN 201220289187 CN201220289187U CN202733130U CN 202733130 U CN202733130 U CN 202733130U CN 201220289187 CN201220289187 CN 201220289187 CN 201220289187 U CN201220289187 U CN 201220289187U CN 202733130 U CN202733130 U CN 202733130U
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Abstract
The utility model provides a pneumatic valve capable of regulating opening and closing speeds. The pneumatic valve is characterized in that a hydraulic speed regulator and a pneumatic actuator are successively mounted on a valve seat from top to bottom; the pneumatic actuator is mounted to the valve seat through a bolt; the bottom of the hydraulic speed regulator is arranged inside the pneumatic actuator; the pneumatic actuator comprises a valve flap, a valve rod and an air cylinder piston; the hydraulic pressure speed regulator comprises an oil cylinder piston rod and an oil cylinder piston; and the top end of the valve rod runs through the interior of the air cylinder piston and is connected with the valve flap, and the bottom end of the valve rod is successively connected with the oil cylinder piston rod and the oil cylinder piston. According to the utility model, the opening and closing speeds of the pneumatic valve can be regulated, and the effects or slow opening and quick closing, quick opening and slow closing, and slow opening and slow closing can be achieved in relevant situations, and thus the shortcoming that the opening or closing speed of the existing pneumatic valve is difficult to regulate is overcome.
Description
Technical field
The utility model relates to a kind of pneumatic valve, the especially a kind of pneumatic valve that can regulate open and close speed.
Background technique
At present, the pneumatic valve of using on the industrial control is just opened or quick closedown under the control at switch when work fast, but, in some occasion, for security needs, pneumatic valve need to be opened with slow speed.For example, just require its slow opening fast shutting when being used in the fuel gas combustion system, the security incidents such as blast occur to prevent the point downstream fire; For another example, when being installed in the high-pressure service pump, just require it slowly to open in order to prevent high pressure, high-velocity fluid to the impact of upstream device; In addition, require again the pneumatic valve slowly closing in some occasion, for example, just need it to change down soon the pass when being installed on the compressor, to prevent compressor surge.
Yet, because existing pneumatic valve can't regulate the speed of its open and close, therefore, based on above-mentioned situation, is badly in need of a kind of can be to the pneumatic valve of opening and closing velocity is regulated.
Summary of the invention
For the deficiency of above-mentioned technology, the utility model provides a kind of pneumatic valve that can regulate open and close speed that closes effect of can realizing changing down slowly.
For achieving the above object, the utility model provides a kind of pneumatic valve that can regulate open and close speed, hydraulic speed regulator and pneumatic actuator from top to bottom are installed on valve seat successively, comprise flap, valve rod and cylinder piston in the described pneumatic actuator, comprise cylinder piston rod and oil cylinder piston in the described hydraulic speed regulator, the inside that described cylinder piston is run through on the top of described valve rod is connected with described flap, and the bottom of described valve rod is connected with described cylinder piston rod and described oil cylinder piston successively.
Described pneumatic actuator is installed on the described valve body by screw, and the bottom of described hydraulic speed regulator is arranged on the inside of described pneumatic actuator.
Also comprise cylinder block, cylinder Returnning spring and source of the gas control entrance in the described pneumatic actuator, one end of described source of the gas control entrance is connected with described cylinder, described cylinder Returnning spring is arranged on the upper end of described cylinder piston, and the top of described valve rod is through the inside of described cylinder Returnning spring.
Also comprise the sponge of saving up strength in the described hydraulic speed regulator, outer cylinder body, the inner cylinder body, the oil cylinder Returnning spring, ball check valve, throttle orifice and adjustable awl, described inner cylinder body and the described sponge of saving up strength all are arranged on the inside of described outer cylinder body, described inner cylinder body is arranged on the upper end of the described sponge of saving up strength, described cylinder piston rod is through the inside of the described sponge of saving up strength, the top of described oil cylinder piston is connected with described oil cylinder Returnning spring and is arranged in described inner cylinder body, described throttle orifice is arranged on the upper end of described inner cylinder body, and described adjustable awl and described ball check valve all are arranged in the described throttle orifice.
The top of described adjustable awl be installed in described hydraulic pressure and surely be connected with the speed adjusting knob at device top.
Compared with prior art, the utlity model has following advantage:
The utility model can be regulated the speed of pneumatic valve switch, can be at conditions associated lower realization slow opening fast shutting, soon change down the pass, change down the effect of pass slowly, be difficult to shortcoming that its unlatching or closing velocity are regulated thereby overcome existing pneumatic valve.
Description of drawings
Fig. 1 is structural drawing of the present utility model;
Fig. 2 is the cut-away view of Fig. 1.
Main symbol description is as follows:
1-valve body 2-source of the gas control entrance 3-pneumatic actuator
4-hydraulic speed regulator 5-speed adjusting knob 6-valve seat
7-flap 8-valve rod 9-cylinder piston
10-cylinder block 11-cylinder Returnning spring 12-cylinder piston rod
The 13-outer cylinder body 15-oil cylinder piston of sponge 14-that saves up strength
16-inner cylinder body 17-oil cylinder Returnning spring 18-oil pocket
19-ball check valve 20-throttle orifice 21-adjustable awl
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Such as Fig. 1 and shown in Figure 2, this pneumatic valve comprises valve body 1, pneumatic actuator 3 and hydraulic speed regulator 4, and hydraulic speed regulator 4 and pneumatic actuator 3 are installed on the valve seat 6 in the valve body 1 successively, at the top of hydraulic speed regulator 4 speed adjusting knob 5 are installed also.Wherein, pneumatic actuator 3 and valve seat 6 are fixed by screw, and the bottom of hydraulic speed regulator 4 is arranged on the inside of pneumatic actuator 3.
The utility model mainly is comprised of valve body, pneumatic actuator, hydraulic speed regulator three parts, the opening and closing of pneumatic valve are except being subject to pneumatic actuator control, also be subject to adjustable hydraulic speed regulator control, utilize the stable speed function of hydraulic speed regulator to control pneumatic valve opening and closing speed, the two ends of valve rod are connected with flap with cylinder piston rod respectively.Valve is when opening, and cylinder piston band ovable valve stem extracts flap and beats valve on the one hand, then is the extrusion oil cylinder piston rod on the other hand; Valve is when closing, and on the one hand cylinder piston promotes valve rod and pushes down flap with throttle down, spurs on the other hand cylinder piston rod, utilizes the stable speed function of hydraulic speed regulator to control the movement velocity of valve rod, thus the opening and closing speed of control valve.When valve rod was connected with forced hydraulic speed regulator, the damping function power of hydraulic speed regulator was opposite with opening force, to realize opening slowly purpose.When valve rod was connected with the drawer type hydraulic speed regulator, the damping function power of decompression speed stabilization machine was opposite with valve closing power, with the purpose that realizes closing slowly.When valve rod was connected with reversible adjustable hydraulic speed stabilization machine, the damping force of hydraulic speed regulator was all had an effect in opening and closing, thereby realized changing down slowly the purpose of pass.
Wherein, forced hydraulic speed regulator working principle is: when cylinder piston rod is subject to the thrust of pneumatic actuator, cylinder piston rod promotes the oil cylinder piston of inner cylinder body to epicoele squeezed air-damping oil, at this moment the ball check valve on the inner cylinder body is closed, damping oil flows through through the narrow and small path between throttle orifice and the adjustable awl from the epicoele of inner cylinder body, passage between the outer wall of the inwall of outer cylinder body and inner cylinder body flows in the sponge of saving up strength in the outer oil-hydraulic cylinder again, change the flow of damping oil by the adjustable awl, to change the movement velocity of cylinder piston rod, realize the purpose of control valve opening speed.
Drawer type hydraulic speed regulator working principle is: when cylinder piston rod is subject to the pulling force of pneumatic actuator, the oil cylinder piston of cylinder piston rod pulling inner cylinder body is to cavity of resorption squeezed air-damping oil, at this moment the ball check valve on the inner cylinder body is closed, damping oil flows through through the narrow and small path between throttle orifice and the adjustable awl from the cavity of resorption of inner cylinder body, passage between outer cylinder body inwall and the external wall of inner cylinder flows to the sponge of saving up strength in the outer cylinder body again, the adjustable awl can change the flow of damping oil, thereby change the movement velocity of cylinder piston rod, realize the purpose of control valve closing velocity.
Reversible hydraulic speed regulator working principle is to combine forced and drawer type speed stabilization machine formation bi-directional configuration, and the damping force of hydraulic speed regulator is all had an effect in opening and closing.
Under the state of not controlling the source of the gas input, flap 7 is being pressed on the valve seat 6 under the effect of cylinder Returnning spring 11, and valve is in closed condition.Under the state that the input of control source of the gas is arranged, source of the gas promotes cylinder piston 9 and moves upward, be with on the one hand ovable valve stem 8 to extract flap 7 and open valve, top oil pressuring cylinder piston bar 12 on the other hand makes progress, cylinder piston rod 12 promotes the oil cylinder piston 15 of inner cylinder body 16 to epicoele squeezed air-damping oil, at this moment the ball check valve 19 on the inner cylinder body is closed, damping oil flows through through the narrow and small path between throttle orifice 20 and the adjustable awl 21 from inner cylinder body 16 epicoeles, flow to again the sponge 13 of saving up strength of outer cylinder body 14 cavity of resorptions through passage between outer cylinder body 14 inwalls and inner cylinder body 16 outer walls, the governing speed adjusting knob can change the distance of throttling awl 21 and throttle orifice 20, thereby change the flow of damping oil, reach the movement velocity that changes cylinder piston rod 12, namely change the movement velocity of valve rod 8, realize the purpose that valve is slowly opened by the speed of appointment.Behind the closing control source of the gas, valve is closed rapidly under 11 effects of cylinder Returnning spring, and the extruding force on cylinder piston rod 15 disappears simultaneously, and ball check valve 19 is opened.Because the aperture of the aperture ratio throttle orifice 20 of ball check valve 19 is large, the damping oil of outer cylinder body cavity of resorption is under the effect of oil cylinder Returnning spring 17 and oil cylinder piston 15, be back to rapidly the epicoele of inner cylinder body 16 by ball check valve 19, hydraulic speed regulator 4 be reset to rapidly open slowly next time and prepare.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. the pneumatic valve that can regulate open and close speed, it is characterized in that, hydraulic speed regulator and pneumatic actuator from top to bottom are installed on valve seat successively, comprise flap, valve rod and cylinder piston in the described pneumatic actuator, comprise cylinder piston rod and oil cylinder piston in the described hydraulic speed regulator, the inside that described cylinder piston is run through on the top of described valve rod is connected with described flap, and the bottom of described valve rod is connected with described cylinder piston rod and described oil cylinder piston successively.
2. the pneumatic valve that can regulate open and close speed according to claim 1 is characterized in that described pneumatic actuator is installed on the described valve body by screw, and the bottom of described hydraulic speed regulator is arranged on the inside of described pneumatic actuator.
3. the pneumatic valve that can regulate open and close speed according to claim 2, it is characterized in that, also comprise cylinder block, cylinder Returnning spring and source of the gas control entrance in the described pneumatic actuator, one end of described source of the gas control entrance is connected with described cylinder, described cylinder Returnning spring is arranged on the upper end of described cylinder piston, and the top of described valve rod is through the inside of described cylinder Returnning spring.
4. according to claim 2 can splitting, the pneumatic valve that pass speed is regulated, it is characterized in that, also comprise the sponge of saving up strength in the described hydraulic speed regulator, outer cylinder body, the inner cylinder body, the oil cylinder Returnning spring, ball check valve, throttle orifice and adjustable awl, described inner cylinder body and the described sponge of saving up strength all are arranged on the inside of described outer cylinder body, described inner cylinder body is arranged on the upper end of the described sponge of saving up strength, described cylinder piston rod is through the inside of the described sponge of saving up strength, the top of described oil cylinder piston is connected with described oil cylinder Returnning spring and is arranged in described inner cylinder body, described throttle orifice is arranged on the upper end of described inner cylinder body, and described adjustable awl and described ball check valve all are arranged in the described throttle orifice.
5. the pneumatic valve that can regulate open and close speed according to claim 4 is characterized in that, the top of described adjustable awl be installed in described hydraulic pressure and surely be connected with the speed adjusting knob at device top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220289187 CN202733130U (en) | 2012-06-20 | 2012-06-20 | Pneumatic valve capable of regulating opening and closing speeds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220289187 CN202733130U (en) | 2012-06-20 | 2012-06-20 | Pneumatic valve capable of regulating opening and closing speeds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733130U true CN202733130U (en) | 2013-02-13 |
Family
ID=47658831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220289187 Expired - Fee Related CN202733130U (en) | 2012-06-20 | 2012-06-20 | Pneumatic valve capable of regulating opening and closing speeds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256398A (en) * | 2013-05-20 | 2013-08-21 | 江南大学 | Valve capable of being opened instantaneously and closed slowly |
| CN109356478A (en) * | 2018-11-26 | 2019-02-19 | 株洲海畅铁路机车配件有限公司 | A kind of locomotive preventing car door hurts sb.'s feelings method and locomotive preventing car door is hurted sb.'s feelings device |
-
2012
- 2012-06-20 CN CN 201220289187 patent/CN202733130U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256398A (en) * | 2013-05-20 | 2013-08-21 | 江南大学 | Valve capable of being opened instantaneously and closed slowly |
| CN103256398B (en) * | 2013-05-20 | 2015-05-06 | 江南大学 | Valve capable of being opened instantaneously and closed slowly |
| CN109356478A (en) * | 2018-11-26 | 2019-02-19 | 株洲海畅铁路机车配件有限公司 | A kind of locomotive preventing car door hurts sb.'s feelings method and locomotive preventing car door is hurted sb.'s feelings device |
| CN109356478B (en) * | 2018-11-26 | 2022-11-29 | 株洲海畅铁路机车配件有限公司 | Method and device for preventing locomotive door from hurting people |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20190620 |