CN201475422U - Pneumatic control valve with novel respiratory hole - Google Patents
Pneumatic control valve with novel respiratory hole Download PDFInfo
- Publication number
- CN201475422U CN201475422U CN200920209100XU CN200920209100U CN201475422U CN 201475422 U CN201475422 U CN 201475422U CN 200920209100X U CN200920209100X U CN 200920209100XU CN 200920209100 U CN200920209100 U CN 200920209100U CN 201475422 U CN201475422 U CN 201475422U
- Authority
- CN
- China
- Prior art keywords
- cavity
- end cap
- valve body
- pneumatic control
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a pneumatic control valve with a novel respiratory hole. The pneumatic control valve comprises a valve body (7) and a valve core (6), wherein the valve core (6) is arranged in the valve body (7), five cavities are formed between the valve core (6) and the valve body (7), a third cavity (3) and a fifth cavity (5) are communicated with outside, the two ends of the valve core (6) are respectively provided with a driving piston (8) and a reset piston (9), the two ends of the valve body (7) are respectively provided with a left end cap (10) and a right end cap (11), a driving cavity (12) is formed between the driving piston (8) and the left end cap (10), a reset cavity (13) is formed between the reset piston (9) and the right end cap (11), the driving cavity (12) is communicated with the fifth cavity (5), and the reset cavity (13) is communicated with the third cavity (3). After adopting the structure, a filter screen is omitted, the number of elements is reduced, and the production cost is reduced. Simultaneously, the pneumatic control valve is used on occasions for isolating and closing breathable air and environment. In the application occasions for isolating and closing breathable air and environment, working gas and exhausted gas are led out through the third cavity and the fifth cavity to connect with a pipeline, thereby a joint and a pipeline do not need to add for breathable air.
Description
Technical field
The utility model relates to a kind of pneumatic control valve, particularly a kind of pneumatic control valve with novel pneumostome.
Background technique
The structure of existing pneumatic control valve as shown in Figure 1, comprise valve body and spool, spool is arranged in the described valve body, form first cavity between spool and the valve body, second cavity, the 3rd cavity, the 4th cavity and the 5th cavity, the 3rd cavity is identical with the external world respectively with the 5th cavity, the two ends of spool respectively are provided with a driven plunger and a return piston, two ends of valve body respectively is provided with a left end cap and a right end cap, driven plunger is arranged in the left end cap, return piston is arranged in the right end cap, form one between driven plunger and the left end cap and drive cavity, form the cavity that resets between return piston and the right end cap.
Because the area of the driven plunger at spool two ends and the cross section of return piston differs bigger, the cross sectional area of driven plunger is greater than the area of return piston, so, when driven plunger was moved right by the air pressure driving, gas volume diminished in the driving cavity that driven plunger and valve body are surrounded, and it is big that pressure becomes, gas volume becomes big in the cavity that resets that return piston and valve body surrounded, pressure diminishes, and moving right of two pistons caused inhibition, produces the phenomenon of feeling suffocated.So, need one pneumostome be set respectively at left end cap and right end cap place usually, pneumostome is connected with the external world, thereby guarantees the tidal air invariablenes pressure of liquid in driving cavity, the cavity that resets, as shown in Figure 1.In order to prevent that extraneous impurity such as dust from entering in the cavity, also is provided with a filter screen in pneumostome.
Existing pneumatic control valve is provided with pneumostome separately, and the tidal air in the driving cavity and the cavity that resets is by little filter screen and environmental communication.When needs are isolated tidal air and environment, joint is set on pneumostome again, draw by pipeline.External pipeline and these two kinds of application states of external pipeline can not be compatible, number of spare parts is many, and cost is higher.
The model utility content
The technical problems to be solved in the utility model provides a kind of pneumatic control valve with novel pneumostome of designs simplification.
For solving the problems of the technologies described above, the pneumatic control valve that the utlity model has novel pneumostome comprises valve body and spool, described spool is arranged in the described valve body, form first cavity between described spool and the described valve body, second cavity, the 3rd cavity, the 4th cavity and the 5th cavity, described the 3rd cavity is identical with the external world respectively with described the 5th cavity, the two ends of described spool respectively are provided with a driven plunger and a return piston, described two ends of valve body respectively is provided with a left end cap and a right end cap, described driven plunger is arranged in the left end cap, described return piston is arranged in the right end cap, form one between described driven plunger and the left end cap and drive cavity, form the cavity that resets between described return piston and the described right end cap, it is characterized in that: described driving cavity is connected with described the 5th cavity, and the described cavity that resets is connected with described the 3rd cavity.
Preferably, described left end cap is provided with a pilot valve.
After adopting such structure, do not need to be provided with filter screen, reduced the quantity of part, reduced cost of production.Can be applicable to simultaneously and tidal air and environment need be isolated the occasion of sealing.Tidal air and environment need isolated the application of sealing, can draw with the exhaust of work gas by the 3rd cavity and the 5th cavity connecting pipeline, not needing increases joint and pipeline again for tidal air.
Description of drawings
Fig. 1 is the structural drawing of existing pneumatic control valve.
Fig. 2 is a structural drawing of the present utility model.
1, first cavity 12, driving cavity
2, second cavity 13, cavity resets
3, the 3rd cavity 14, pilot valve
4, the 4th cavity 15, pneumostome
5, the 5th cavity 16, filter screen
6, spool 17, cross passage
7, valve body 18, yi word pattern passage
8, driven plunger 19, steel ball
9, return piston 20, seal ring
10, left end cap 21, Sealing
11, right end cap
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 2, the pneumatic control valve that the utlity model has novel pneumostome comprises valve body 7 and spool 6, spool 6 is arranged in the valve body 7, form first cavity 1 between spool 6 and the valve body 7, second cavity 2, the 3rd cavity 3, the 4th cavity 4 and the 5th cavity 5, the 3rd cavity 3 and the 5th cavity 5 communicate with the external world respectively, the two ends of spool 6 respectively are provided with a driven plunger 8 and a return piston 9, the two ends of valve body 7 respectively are provided with a left end cap 10 and a right end cap 11, driven plunger 8 is arranged in the left end cap 10, return piston 9 is arranged in the right end cap 11, form one between driven plunger 8 and the left end cap 10 and drive cavity 12, form the cavity 13 that resets between return piston 9 and the right end cap 11, drive cavity 12 and be connected with the 5th cavity 5, the cavity 13 that resets is connected with the 3rd cavity 3.Some seal rings 20 are set between valve body 7 and the spool 6.The position of seal ring 20 as shown in Figure 2.The effect that seal ring 20 plays sealing and supports.When spool 6 is positioned at high order end, position as depicted in figs. 1 and 2, the 4th cavity 4 is connected with the 5th cavity 5, and second cavity 2 is connected with first cavity 1; When spool 6 was positioned at low order end, the 4th cavity 4 was connected with first cavity 1, and second cavity 2 is connected with the 3rd cavity 3.
Between driven plunger 8 and the left end cap 10 Sealing 21 is set, a Sealing 21 also is set between return piston 9 and the right end cap 11.Left end cap 10 is provided with a pilot valve 14.Spring also can be set between described return piston and the described right end cap constitute the spring reset form.
On the valve body 7 in the 5th cavity 5 left sides criss-cross passage is set, cross passage 17 is made up of two passes.The end of two passes respectively is provided with a steel ball 19 sealings, prevents that passage from directly communicating with the external world.Cross passage 17 is convenient to processing.The setting of steel ball 19 prevents in the extraneous dust and the direct inlet passage of impurity.Cross passage 17 has guaranteed that the 5th cavity 5 is connected with driving cavity 12, and the 5th cavity 5 communicates with silencing apparatus, and silencing apparatus communicates with the external world.Like this, both guaranteed that driving cavity 12 communicated with the external world, and can not produce " feeling suffocated " phenomenon, because the existence of silencing apparatus has prevented entering of extraneous dust and impurity.
" one " font passage 18 of level is set on the valve body 7 on the right side of the 3rd cavity 3, and in-line passage 18 has been communicated with the 3rd cavity 3 and the cavity 13 that resets.The 3rd cavity 3 is communicated with silencing apparatus, and silencing apparatus communicates with the external world.Not needing increases joint or pipeline again for pneumostome.The utility model has saved filter screen, has reduced part, has reduced cost.The mode of communicating of the driving cavity 12 and the mode of communicating of the 5th cavity 5, reset cavity 13 and the 3rd cavity 3 has multiple, and communication passage is all in the inside of valve body 7, and communication passage does not directly communicate with the external world.
Above-mentioned design example only is used for the utility model is described, and does not constitute the restriction to the claim scope, and other substantial equivalence means that it may occur to persons skilled in the art that are all in the utility model claim scope.
Claims (3)
1. pneumatic control valve with novel pneumostome, comprise valve body (7) and spool (6), described spool (6) is arranged in the described valve body (7), form first cavity (1) between described spool (6) and the described valve body (7), second cavity (2), the 3rd cavity (3), the 4th cavity (4) and the 5th cavity (5), described the 3rd cavity (3) and described the 5th cavity (5) communicate with the external world respectively, the two ends of described spool (6) respectively are provided with a driven plunger (8) and a return piston (9), the two ends of described valve body (7) respectively are provided with a left end cap (10) and a right end cap (11), described driven plunger (8) is arranged in the described left end cap (10), described return piston (9) is arranged in the described right end cap (11), form one between described driven plunger (8) and the described left end cap (10) and drive cavity (12), form the cavity (13) that resets between described return piston (9) and the described right end cap (11), it is characterized in that: described driving cavity (12) is connected with described the 5th cavity (5), and the described cavity that resets (13) is connected with described the 3rd cavity (3).
2. the pneumatic control valve with novel pneumostome according to claim 1, it is characterized in that: between described driven plunger (8) and the described left end cap (10) Sealing (21) is set, between described return piston (9) and the described right end cap (11) Sealing (21) is set also.
3. the pneumatic control valve with novel pneumostome according to claim 1 is characterized in that: described left end cap (10) is provided with a pilot valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920209100XU CN201475422U (en) | 2009-09-03 | 2009-09-03 | Pneumatic control valve with novel respiratory hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920209100XU CN201475422U (en) | 2009-09-03 | 2009-09-03 | Pneumatic control valve with novel respiratory hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475422U true CN201475422U (en) | 2010-05-19 |
Family
ID=42411671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920209100XU Expired - Lifetime CN201475422U (en) | 2009-09-03 | 2009-09-03 | Pneumatic control valve with novel respiratory hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687727A (en) * | 2014-09-04 | 2017-05-17 | Smc株式会社 | Dual 4-port electromagnetic valve |
-
2009
- 2009-09-03 CN CN200920209100XU patent/CN201475422U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687727A (en) * | 2014-09-04 | 2017-05-17 | Smc株式会社 | Dual 4-port electromagnetic valve |
| CN106687727B (en) * | 2014-09-04 | 2019-02-01 | Smc株式会社 | Double 4 ports solenoid valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102330834B (en) | Electromagnetic valve | |
| CN203441509U (en) | Novel large-flow hydraulic control one-way valve | |
| CN105545858B (en) | A kind of special Pneumatic valve of pneumohydraulic pressure-cylinder and pneumohydraulic pressure-cylinder | |
| CN108138973A (en) | Guiding valve | |
| CN106939910A (en) | A kind of Electrical hydrostatic actuator single rod symmetrical hydraulic cylinder at a high speed | |
| CN201206654Y (en) | Balancing valve | |
| CN201475081U (en) | Oil-gas split type rapid pressurized cylinder | |
| CN201475422U (en) | Pneumatic control valve with novel respiratory hole | |
| CN202023786U (en) | Butterfly valve switch cylinder | |
| CN201372980Y (en) | Pneumatic reversing valve | |
| CN202852070U (en) | Crank two-position five-way valve | |
| CN201007295Y (en) | Wet-type electromagnetic direction changing valve | |
| CN202790490U (en) | Internal respiration type three-position cylinder assembly | |
| CN201318475Y (en) | Shutter valve | |
| CN2934850Y (en) | High-pressure connector | |
| CN202852069U (en) | Pressure suction two -position five- way valve | |
| CN202852066U (en) | Single electric control two-position five-way solenoid valve | |
| CN205895721U (en) | Reciprocal booster of much more single accuse conversion | |
| CN101672382B (en) | Strut type shuttle valve | |
| CN202274101U (en) | Sealing structure for piston rod of booster | |
| CN205969850U (en) | Penetrate injection device who glues two boards with built -in oil pipe | |
| CN202580085U (en) | Manual sealing air valve | |
| CN201125702Y (en) | Anti-discharge, pressure reducing oil well head tee joint T | |
| CN203322100U (en) | Clutch booster | |
| CN220204071U (en) | Main machine structure with self-adaptive piston |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FESTO (CHINA) AUTOMATION MANUFACTURING LTD. Free format text: FORMER OWNER: FESTO (CHINA) LTD. Effective date: 20121129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121129 Address after: 201206 Shanghai City Jingqiao export processing zone of Pudong New Area (South) Long Hu Road No. 143 Patentee after: FESTO (China) automation manufacturing Co. Ltd. Address before: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1156 Patentee before: FESTO (China) Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |