CN202992277U - Differential pressure type reversing valve - Google Patents
Differential pressure type reversing valve Download PDFInfo
- Publication number
- CN202992277U CN202992277U CN 201220373993 CN201220373993U CN202992277U CN 202992277 U CN202992277 U CN 202992277U CN 201220373993 CN201220373993 CN 201220373993 CN 201220373993 U CN201220373993 U CN 201220373993U CN 202992277 U CN202992277 U CN 202992277U
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- China
- Prior art keywords
- valve
- air chamber
- reversing
- chamber
- valve body
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- Expired - Lifetime
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- Multiple-Way Valves (AREA)
Abstract
The utility model discloses a differential pressure type reversing valve which comprises a valve body and is characterized in that a reserving chamber, a gas chamber A, a gas exhausting chamber and a gas chamber B are sequentially arranged in the valve body and communicated with each other. The above gas chambers are respectively provided with a gas inlet, a valve port A, a gas outlet and a valve port B. A reversing sliding valve is arranged in the reversing chamber. The reversing sliding valve corresponds to the gas chamber A and the gas chamber B. Aerating sliding valves are respectively arranged in the gas chamber A and the gas chamber B. The aerating sliding valves are respectively connected with reversing air cylinders on the valve body. Aerating valve ports are arranged at bottoms of the gas chamber A and the gas chamber B. An aerating pipe is connected between the two aerating valve ports. The aim of reversing can be achieved through the manner that the reversing sliding valve is pushed by pressure difference so that actions of the reversing valve are flexible, the structure of the reversing valve is simplified and production cost is reduced. The differential pressure type reversing valve is simple in structure, convenient to install, good in sealing performance and reliable in performance.
Description
Technical field
The utility model relates to the mechanical commutation valve, especially a kind of differential selector valve.
Background technique
There is numerous species in the mechanism that is used at present the double tower switching, as bivalve group (being comprised of a four-way valve and a two-way valve), three valve groups (being comprised of a three-way shuttle valve and two film cut-off valves), four valve groups (being comprised of four film cut-off valves or four Pneumatic butterfly valves).These mechanisms can realize automaticallying switch, but all have various deficiency: as the bivalve group switch that moment is large, spool is easy to wear and produce in leak; Three valve groups and four valve block structures are complicated, pipeline is many, volume is large, installation is inconvenient, diaphragm cracky, high in cost of production.In addition, also has a kind of mechanism---combination brake switch and proporting for the double tower switching.Because the rocker in valve has amplification because the existence that rocking arm is arranged makes impact force when switching, and rocking arm is longer, and impact force is amplified more serious.Thereby make rocking arm and valve plate easy-rupturing, the rocker seat easily gets loose, sealing surface is easy to wear, and rate of fault is high.Simultaneously because upper valve body and external connecting position are many, as suction tude, silencing apparatus etc., during the maintain and replace rocker, workload is large, the mounting or dismounting inconvenience.
The model utility content
The purpose of this utility model be to provide a kind of simple in structure, be active in one's movements, differential selector valve that service behaviour is good.
For achieving the above object, the technological scheme that the utility model adopts is: a kind of differential selector valve, comprise valve body, it is characterized in that: be provided with successively commutate chamber, air chamber A, exhaust chamber and air chamber B in valve body, and connect successively, correspondence is provided with suction port, valve port A, relief opening and air chamber B respectively on above-mentioned air chamber; At the indoor reversing slide valve that is provided with of commutation, this reversing slide valve is corresponding with air chamber A, air chamber B; Be respectively equipped with the inflation guiding valve in air chamber A and air chamber B, this inflation guiding valve is connected with reversing cylinder on valve body respectively; Bottom at air chamber A, air chamber B also is provided with the inflation valve port, connects by gas tube between two inflation valve ports.
Preferably, described valve body is made of upper valve body and lower valve body, is fixedly connected with by screw between upper valve body and lower valve body.
Preferably, described relief opening is provided with silencing apparatus.
After the utility model adopts said structure, because the mode that has adopted draught head to promote reversing slide valve reaches the commutation purpose, make the selector valve action sensitiveer, and simplified the structure of selector valve, reduced cost of production.The utility model is simple in structure, easy for installation, good seal performance, reliable performance.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is fundamental diagram of the present utility model.
In figure: 1, valve body, 2, the commutation chamber, 21, suction port, 3, air chamber A, 31, valve port A, 4, exhaust chamber, 41, relief opening, 42, silencing apparatus, 5, air chamber B, 51, valve port B, 6, reversing slide valve, 7, the inflation guiding valve, 8, reversing cylinder, 9, the inflation valve port, 10, gas tube.
Embodiment
As shown in the figure, a kind of differential selector valve comprises valve body 1, it is characterized in that: be provided with successively commutate chamber 2, air chamber A3, exhaust chamber 4 and air chamber B5 in valve body 1, and connect successively, correspondence is provided with suction port 21, valve port A31, relief opening 41 and valve port B51 respectively on above-mentioned air chamber; Be provided with reversing slide valve 6 in the chamber 2 of commutating, this reversing slide valve 6 is corresponding with air chamber A3, air chamber B5; Be respectively equipped with inflation guiding valve 7 in air chamber A3 and air chamber B5, this inflation guiding valve 7 is connected with reversing cylinder 8 on valve body 1 respectively; Also be provided with between inflation valve port 9, two inflation valve ports 9 in the bottom of air chamber A3, air chamber B5 and connect by gas tube 10.
Preferably, described valve body 1 is made of upper valve body 1 and lower valve body 1, is fixedly connected with by screw between upper valve body 1 and lower valve body 1.
Preferably, described relief opening 41 is provided with silencing apparatus 42.
Working principle: by the timing break-make between air chamber, form different gas circuits and produce draught head, reversing slide valve 6 being moved left and right, thereby open or close corresponding valve, reaching the purpose of automatic switchover.
As shown in Figure 2, in selector valve work, gas enters in the chamber 2 of commutating from suction port 21, at this moment, reversing slide valve 6 is positioned at air chamber A3 one side, and air chamber A3 is closed, gas passes the connecting port of commutation chamber 2 and air chamber B5, enters air chamber B5, and exports tower drier A, B to from valve port B51.At this moment, the pressure balance between air chamber A3 and air chamber B5.
During commutation, inflation guiding valve 7 in air chamber B5 slides downwards under the promotion of reversing cylinder 8, the passage of air chamber B and exhaust chamber 4 is opened, inflation valve port 9 closures bottom air chamber B and air chamber A, gas in tower drier B is back in air chamber B5 from valve port B51, and is discharged to atmosphere by the relief opening 41 on exhaust chamber 4.At this moment, be in the low-pressure state of exhaust due to air chamber B5, the chamber internal air pressure of air chamber A3 is higher than the chamber internal air pressure of air chamber B5, so reversing slide valve 6 slides into air chamber B5 one end from air chamber A3 one end under the active force of draught head, reversing cylinder 8 resets, and inflation guiding valve 7 is up, inflation valve port 9 connections of air chamber B and air chamber A bottom, make the two ends air pressure balance, complete switch operation.
The above is preferred implementation of the present utility model; certainly can not limit with this interest field of the utility model; should be understood that; for those skilled in the art; the technical solution of the utility model is modified or is equal to replacement, do not break away from the protection domain of technical solutions of the utility model.
Claims (3)
1. differential selector valve, comprise valve body (1), it is characterized in that: be provided with successively commutation chamber (2), air chamber A(3 in valve body (1)), exhaust chamber (4) and air chamber B(5), and connect successively, correspondence is provided with suction port (21), valve port A(31 respectively on above-mentioned air chamber), relief opening (41) and air chamber B(5); Be provided with reversing slide valve (6), this reversing slide valve (6) and air chamber A(3 in commutation chamber (2)), air chamber B(5) corresponding; At air chamber A(3) with air chamber B(5) in be respectively equipped with inflation guiding valve (7), this inflation guiding valve (7) is connected with reversing cylinder (8) on valve body (1) respectively; At air chamber A(3), air chamber B(5) the bottom also be provided with inflation valve port (9), connect by gas tube (10) between two inflations valve ports (9).
2. differential selector valve according to claim 1 is characterized in that: described valve body (1) is made of upper valve body (1) and lower valve body (1), is fixedly connected with by screw between upper valve body (1) and lower valve body (1).
3. differential selector valve according to claim 1, it is characterized in that: described relief opening (41) is provided with silencing apparatus (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220373993 CN202992277U (en) | 2012-07-31 | 2012-07-31 | Differential pressure type reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220373993 CN202992277U (en) | 2012-07-31 | 2012-07-31 | Differential pressure type reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992277U true CN202992277U (en) | 2013-06-12 |
Family
ID=48563457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220373993 Expired - Lifetime CN202992277U (en) | 2012-07-31 | 2012-07-31 | Differential pressure type reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822792A (en) * | 2016-06-08 | 2016-08-03 | 肇庆市福昌净化科技有限公司 | Pneumatic control differential pressure type reversing assembly |
-
2012
- 2012-07-31 CN CN 201220373993 patent/CN202992277U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822792A (en) * | 2016-06-08 | 2016-08-03 | 肇庆市福昌净化科技有限公司 | Pneumatic control differential pressure type reversing assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |