CN201377474Y - Pneumatic control self-return change-over valve - Google Patents
Pneumatic control self-return change-over valve Download PDFInfo
- Publication number
- CN201377474Y CN201377474Y CN200920142251U CN200920142251U CN201377474Y CN 201377474 Y CN201377474 Y CN 201377474Y CN 200920142251 U CN200920142251 U CN 200920142251U CN 200920142251 U CN200920142251 U CN 200920142251U CN 201377474 Y CN201377474 Y CN 201377474Y
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- valve
- piston ring
- pilot valve
- cavity
- valve body
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- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a change-over valve product and overcomes the defect that the prior art may affect the performance of a change-over valve easily due to corrosion and aging of a return spring. The pneumatic control self-return change-over valve comprises a valve body which is provided with a working pressure port and a plurality of air inlets on the outer surface, wherein a valve core is arranged in an inner cavity of the valve body, the valve core is provided with a left piston ring, a middle piston ring and a right piston ring, the left side of the valve body is connected with a pilot valve, the pilot valve is provided with a magnetic valve, the left piston ring and the middle piston ring have the same area, the area of the right piston ring is smaller than the area of the left piston ring and the middle piston ring, a valve port inner cavity of the pilot valve is connected with the inner end of the working pressure port, and a valve cavity of the pilot valve is communicated with the valve body inner cavity of through an air pipeline on the lateral part of the valve port. A concave cavity is arranged on one side which corresponding to the left piston ring of the pilot valve, and a cushion pad is inserted in the concave cavity. The valve core of the product utilizes pressure difference to return automatically, the return is rapid and has good reliability, and the pneumatic control self-return change-over valve can be widely applied in matching application in the pneumatic control field.
Description
Technical field
The utility model relates to a kind of air operated reversing valve manufacturing technology, especially refers to the structure technology that automatically replies of spool.
Background technique
Air operated reversing valve is a kind of pneumatic control components that is widely used in fields such as machinery, chemical industry, vehicle, weaving, and it utilizes spool the moving in valve pocket of a plurality of piston rings of tool, realizes being located at the automatic reverse function between a plurality of interfaces of valve body surface; Wherein the action of spool mainly relies on the solenoid valve iron core to open the pilot valve valve port, makes operating air pressure act on the piston ring end face and produces pressure and promote it and move.At present, the spool of this type of air operated reversing valve product is replied and is mainly relied on the spring of piston ring end to finish; After work operation a period of time, spring members is easy to generate corrosion and aging, the spring decreased performance, and spool is replied low-response, causes the pneumatic system can't proper functioning.People expect to invent and a kind ofly substitute the selector valve product that conventional springs is replied by pneumatic answer for this reason, are easy to generate corrosion and aging, flexibility decrease and make slack-off defective and the deficiency of commutation response to overcome returning spring that prior art products exists.
The model utility content
The technical problems to be solved in the utility model is the defective and the deficiency that produce corrosion and wear out and make flexibility decrease, have a strong impact on the selector valve speed of response because of returning spring easily that overcomes existing like product, provide a kind of to society and utilize pneumatic answering technology to substitute the selector valve product that conventional springs is replied, required to satisfy the supporting application in pneumatic control field.
The technological scheme that its technical problem that solves the utility model adopts is: gas control comprises that from replying selector valve appearance is provided with working pressure mouth and a plurality of valve body that connects gas port; The inner chamber of described valve body is provided with spool, and described spool is provided with left piston ring, intermediate piston ring and right piston ring; Described valve body left side is connected with pilot valve, and described pilot valve is provided with solenoid valve; Described left piston ring is long-pending identical with described intermediate piston anchor ring, and described right piston ring area is long-pending less than described left piston ring and described intermediate piston anchor ring; The valve port inner chamber of described pilot valve is communicated with described working pressure mouth the inner; The valve pocket of described pilot valve is communicated with described body cavity through the air flue of described valve port sidepiece.
Described pilot valve is provided with cavity corresponding to a side of described left piston ring, and described cavity is embedded the cushion pad of the axial vent of tool.
The utility model gas control is established left piston ring, intermediate piston ring and right piston ring from replying selector valve at described spool, wherein said left piston ring is long-pending identical with described intermediate piston anchor ring, and described right piston ring area is less than described left piston ring or described intermediate piston ring; During work, the pressure difference of utilizing gas pressure to form in three piston ring end faces realizes the move left and right of spool, thereby finishes the automatic switching function of gas circuit.Behind closed electromagnetic valve, the thrust left that described spool is formed by intermediate piston ring its right end face and right piston ring left end face makes the fast automatic normality that returns back to of described spool.Compare than existing product, this product spool utilizes pressure difference to automatically reply, and replys rapidly, responds sensitive, good reliability, and it is required to be widely used in the supporting application in pneumatic control field.
Description of drawings
Fig. 1 is the utility model normality status architecture schematic representation.
Fig. 2 is the utility model "on" position structural representation.
Embodiment
As shown in Figure 1, the utility model gas control comprises interconnective valve body 14 and pilot valve 11 from replying selector valve, and described valve body 14 appearances one side is provided with working pressure P mouth and connects gas R mouth, connects gas S mouth, and relative opposite side is provided with and connects gas A mouth and B mouth; The inner chamber 1 of described valve body 14 is provided with spool 7, described spool 7 is provided with left piston ring 3, intermediate piston ring 4 and right piston ring 5, wherein said left piston ring 3 is identical with described intermediate piston ring 4 areas, and described right piston ring 5 areas are less than described left piston ring 3 and described intermediate piston ring 4.Described pilot valve 11 is located at described valve body 14 left sides, and described pilot valve 11 outsides are connected with solenoid valve 12, and described solenoid valve 12 is provided with moving iron core 13 and support spring 6; Be provided with valve port 15 in the described pilot valve 11, described moving iron core 13 is axially corresponding with valve port 15; Described valve port 15 inner chambers are communicated to described working pressure P mouth the inner through described pilot valve 11 inner flow passages 16, described valve body 14 inner flow passages 8; Described pilot valve 11 is provided with cavity 17 corresponding to a side of described left piston ring 3, and described cavity 17 is embedded the cushion pad 2 of the axial vent 10 of tool, and the valve pocket 18 of described pilot valve 11 is communicated with described cavity 17 through the air flue 9 of described valve port 15 sidepieces.
Continue in conjunction with the accompanying drawings summary the utility model working principle below.As shown in Figure 1, behind valve body P mouth cut-in operation air pressure, air pressure enters cavity between described intermediate piston ring 4 and the right piston ring 5, because described right piston ring 5 areas are less than described intermediate piston ring 4, therefore in described intermediate piston ring 4 its right end face formation thrust left, described spool 7 moves to left, this moment P mouth and the conducting of A mouth, B mouth and conducting of S mouth.As shown in Figure 2, when opening solenoid valve 12, described moving iron core 13 is opened described pilot valve 11 valve ports 15, the operating air pressure that valve body P mouth inserts is through described valve body 14 inner flow passages 8, described pilot valve 11 inner flow passages 16, described pilot valve 11 valve pockets 18, the air flue 9 of described valve port 15 sidepieces and the vent 10 of described cushion pad 2 act on described left piston ring 3 left end face, this thrust has been offset the pressure that operating air pressure acts on described intermediate piston ring 4 its right end face, therefore the pressure that acts on described right piston ring 5 left end face moves to right described spool 7, up to P mouth and the conducting of B mouth, A mouth and the conducting of R mouth, thus the switching function of gas circuit finished; After solenoid valve 12 cut out, described spool 7 automatically returned to normality again.
Claims (2)
1, a kind of gas control comprises that from replying selector valve appearance is provided with working pressure mouth and a plurality of valve body that connects gas port; The inner chamber of described valve body is provided with spool, and described spool is provided with left piston ring, intermediate piston ring and right piston ring; Described valve body left side is connected with pilot valve, and described pilot valve is provided with solenoid valve; It is characterized in that: described left piston ring is long-pending identical with described intermediate piston anchor ring, and described right piston ring area is long-pending less than described left piston ring and described intermediate piston anchor ring; The valve port inner chamber of described pilot valve is communicated with described working pressure mouth the inner; The valve pocket of described pilot valve is communicated with described body cavity through the air flue of described valve port sidepiece.
2, gas control is from replying selector valve according to claim 1, and it is characterized in that: described pilot valve is provided with cavity corresponding to a side of described left piston ring, and described cavity is embedded the cushion pad of the axial vent of tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920142251U CN201377474Y (en) | 2009-04-06 | 2009-04-06 | Pneumatic control self-return change-over valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920142251U CN201377474Y (en) | 2009-04-06 | 2009-04-06 | Pneumatic control self-return change-over valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201377474Y true CN201377474Y (en) | 2010-01-06 |
Family
ID=41517582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920142251U Expired - Fee Related CN201377474Y (en) | 2009-04-06 | 2009-04-06 | Pneumatic control self-return change-over valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201377474Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518377A (en) * | 2018-05-18 | 2018-09-11 | 宁波真格液压科技有限公司 | A kind of automatic diverter valve for garbage compression station |
| CN109611402A (en) * | 2019-01-09 | 2019-04-12 | 青岛雷沃工程机械有限公司 | A kind of electrically-controlled valve of belt spool position self feed back mechanism |
| CN114321439A (en) * | 2021-12-29 | 2022-04-12 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
-
2009
- 2009-04-06 CN CN200920142251U patent/CN201377474Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518377A (en) * | 2018-05-18 | 2018-09-11 | 宁波真格液压科技有限公司 | A kind of automatic diverter valve for garbage compression station |
| CN109611402A (en) * | 2019-01-09 | 2019-04-12 | 青岛雷沃工程机械有限公司 | A kind of electrically-controlled valve of belt spool position self feed back mechanism |
| CN114321439A (en) * | 2021-12-29 | 2022-04-12 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
| CN114321439B (en) * | 2021-12-29 | 2023-10-03 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Fenghua City Jin Feng Machinery Co., Ltd. Assignor: Du Kaiming Contract record no.: 2010330001051 Denomination of utility model: Pneumatic control self-return change-over valve Granted publication date: 20100106 License type: Exclusive License Record date: 20100528 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20120406 |