CN1189671C - Liquid controlled valve reversing method and reversing valve - Google Patents
Liquid controlled valve reversing method and reversing valve Download PDFInfo
- Publication number
- CN1189671C CN1189671C CNB021398488A CN02139848A CN1189671C CN 1189671 C CN1189671 C CN 1189671C CN B021398488 A CNB021398488 A CN B021398488A CN 02139848 A CN02139848 A CN 02139848A CN 1189671 C CN1189671 C CN 1189671C
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- China
- Prior art keywords
- valve
- piston
- diaphragm
- valve body
- fluid
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- Expired - Fee Related
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Abstract
The present invention relates to a liquid controlled reversing method for valves, which is characterized in that a piston of which one end is provided with a diaphragm is arranged in an inner cavity of a valve body, closed inner cavities with different sizes are formed on both ends of the valve body by the diaphragm, pressure difference is generated between the two cavities by controlling the pressure of liquid in the diaphragm cavity so that the piston communicated with an inlet and an outlet which are correspondingly arranged in the valve body is moved, and thus, a valve is reversed. A piston is arranged in an inner cavity of a valve body of a reversing valve designed according to the method, the inner wall of the piston is provided with a drainage hole communicated with a fluid inlet and a fluid outlet which are arranged in the valve body, one end of the piston is provided with a diaphragm, a closed diaphragm cavity is formed between the diaphragm and an upper valve cover, the other end of the piston is provided with an opening hollow body communicated with the drainage hole, a closed lower cavity of the valve body is formed between the opening hollow body and a lower valve cover, and the diaphragm cavities are respectively provided with a drainage inlet connected with a drainage tube and an outlet controlled by a control valve. The method has the advantages of full utilization of the fluid characteristic, artful use of the principle of the fluid pressure difference, reversion by utilizing the fluid of the reversing valve, good sealing performance and realization of remote control.
Description
Technical field:
The present invention relates to a kind of structure of valve, be specifically related to the pilot operated directional control valve of the working state of conversion main valve or main device by changing control valve fluid output direction.
Background technique:
Selector valve is a kind of by change self fluid outflow direction, and changes the control valve of the device working state of controlling.Existing selector valve mainly contains manually and electronic two big classes.Hand-operated direction valve needs manpower control, time-consuming, effort, and operation is also inconvenient, and can not realize distant control; And electronic selector valve is because aspects such as structures, machining accuracy, and sealing surface easily leaks, seeps water, and causes the damage of electrical apparatus element easily, and it is unreliable commutate, and lack working life.
Summary of the invention:
Technical problem to be solved by this invention is the defective that overcomes present prior art, proposes a kind of selector valve that can change control valve fluid output direction by the pressure reduction between the liquid.
The present invention solves the problems of the technologies described above by following technological scheme.It is to be provided with the piston that an end is equipped with diaphragm at body cavity, make it to form the airtight inner chamber differ in size at the valve body two ends, then by controlling the pressure of diaphragm intracavity liquid, make between two chambeies and produce pressure reduction, move thereby make to produce with the piston that the corresponding entrance and exit of offering on the valve body is communicated with, and then realize the commutation of valve.Its concrete structure comprises valve body, it is characterized in that the upper and lower end face of described valve body is connected with bottom flange with bonnet respectively, body cavity is equipped with the piston that can move up and down within it, this piston inner wall offers the conduction hole that can be interconnected with the fluid input offered on the valve body and outlet, piston one end is equipped with diaphragm, and form the airtight diaphragm chamber that can control its fluid pressure by control valve between the bonnet, the open hollow body of the other end for communicating with conduction hole, and form an airtight valve body cavity of resorption between the bottom flange; Offer drainage inlet that joins with drainage tube and the outlet of controlling by control valve on the described diaphragm chamber respectively.Control valve of the present invention can be manual, electronic or Electromagnetic Control, and the drainage tube pipeline that communicates with diaphragm chamber drainage inlet is provided with current limiting tube.
The present invention has made full use of the feature that fluid itself is had, use the principle of fluid pressure difference dexterously, realization utilizes the commutation of self fluid, thereby do not worry the interior leakage of valve inner fluid, can realize the sealing of valve very easily, simultaneously owing to the outlet at diaphragm chamber is provided with control valve, as long as adopt common electronic or solenoid valve just can realize distant control.Advantage of the present invention and effect are: (1) adopts a solenoid valve or gate valve control, and driven medium can directly adopt inlet pressure water, need not other power source; (2) area of passage is big, is difficult for stopping up; (3) adopt diaphragm type not have the motion wearing and tearing, breakout pressure is low, and is insensitive to the silt alluvial; (4) power consumption is little, noise is low; (5) easy to operate, sensitive reversing is reliable; (6) automaticity height can be realized far distance automatic controlling, manually control and centralized control; (7) long service life, the material of major part adopts stainless steel part, can be antirust, corrosion-resistant.
Description of drawings:
Fig. 1 is structure embodiment's schematic representation of the present invention.
Among the figure:
1. main valve cavity of resorption interface 2. main valve epicoele interfaces 3. valve bodies
4. piston 5.O shape seal ring 6. diaphragm pressing plates
7. bonnet 8. diaphragm chamber drainages export 9. control valves
10. diaphragm chamber 11. diaphragm chamber drainages 12. diaphragms that enter the mouth
13. drainage tube 14. current limiting tubes 15. fluid inputs
16. the upper and lower chamber drainage of piston conduction hole 17. main valves exports 18. valve body cavity of resorptions
19. bottom flange
Embodiment:
The present invention be directed to the improvement that defective of the prior art is carried out, the characteristic that is had according to fluid itself designs, its concrete grammar is to establish the piston that an end is equipped with diaphragm at body cavity, make it to form the airtight inner chamber differ in size at the valve body two ends, make between two chambeies by the pressure of controlling the diaphragm intracavity liquid then and produce pressure reduction, thereby piston produce to be moved,, and then realized the commutation of valve again by corresponding entrance and exit connection of offering on the intercommunicating pore offered on the piston and the valve body.
Accompanying drawing has provided one embodiment of the present of invention, as shown in the figure, the present invention includes valve body 3, it is characterized in that: valve body 3 is established inner chamber, offer fluid input 15 on it, on the main valve, cavity of resorption drainage outlet 17, main valve cavity of resorption interface 1 and main valve epicoele interface 2, interior cavity wall is equipped with O-ring seals 5, also offer annular groove on its inwall, on the valve body 3, the lower end surface is connected with bottom flange 19 with bonnet 7 respectively, valve body 3 inner chambers are equipped with piston 4, piston 4 outer surfaces can slide along valve body 3 internal chamber walls, and the one end is equipped with diaphragm 12, and this diaphragm can be dish-shaped shape or sheet, both ends of the surface all are equipped with diaphragm pressing plate 6 up and down, the edge is located between valve body 3 and the bonnet 7, both can be used as Sealing between the two, simultaneously again and form an airtight diaphragm chamber 10 between the bonnet 7, offer the diaphragm chamber drainage inlet 11 and the diaphragm chamber drainage outlet 8 that are communicated with drainage tube 13 on the bonnet 7, be communicated with diaphragm chamber 10 respectively, drainage tube 13 pipelines are provided with current limiting tube 14, are communicated with diaphragm chamber drainage inlet 11 simultaneously.Export in the diaphragm chamber drainage and to be provided with a control valve 9 on 8 pipelines, this valve can be manual or electronic control, can also be Electromagnetic Control, the outflow of may command diaphragm chamber 10 inner fluids, thereby the pressure of liquid in the control diaphragm chamber 10.Piston 4 the other ends are the hollow body of opening, and also form an airtight valve body cavity of resorption 18 between the bottom flange 19; Piston 4 exterior edge faces have piston conduction hole 16 according to the position that piston 4 slides, and fluid can be from fluid input 15 in piston conduction hole 16 enters valve body cavity of resorption 18.
The present invention commutates action by the press water control in diaphragm chamber 10 and the valve body cavity of resorption 18.Pressure medium enters diaphragm chamber 10 and valve body cavity of resorption 18 from fluid input 15, when control valve 9 is opened, the pressure of diaphragm chamber 10 is discharged (pressure release) from diaphragm chamber drainage outlet 8, the corresponding increase of the pressure of valve body cavity of resorption 18, make on the piston 4 and move, fluid input 15 is communicated with main valve cavity of resorption interface 1 by piston 4 core chambeies, and pressure medium enters main valve control room cavity of resorption, and main valve is opened.When control valve 9 was closed, because diaphragm chamber 10 is bigger than the pressure of valve body cavity of resorption 18, piston 4 moved down, fluid input 15 is communicated with main valve epicoele interface 2 by piston 4 core chambeies, pressure medium enters main valve control room epicoele, and main valve is closed, thereby has realized the purpose of liquid controlled reversing.
Claims (3)
1, a kind of pilot operated directional control valve, comprise valve body, it is characterized in that the upper and lower end face of described valve body is connected with bottom flange with bonnet respectively, body cavity is equipped with the piston that can move up and down within it, this piston inner wall offers the conduction hole that can be interconnected with the fluid input offered on the valve body and outlet, piston one end is equipped with diaphragm, and form the airtight diaphragm chamber that can control its fluid pressure by control valve between the bonnet, the open hollow body of the other end for communicating with conduction hole, and form an airtight valve body cavity of resorption between the bottom flange; Offer drainage inlet that joins with drainage tube and the outlet of controlling by control valve on the described diaphragm chamber respectively.
2, pilot operated directional control valve according to claim 1 is characterized in that control valve is manual, electronic or Electromagnetic Control.
3, pilot operated directional control valve according to claim 1 and 2 is characterized in that the drainage tube pipeline that communicates with diaphragm chamber drainage inlet is provided with current limiting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021398488A CN1189671C (en) | 2002-12-20 | 2002-12-20 | Liquid controlled valve reversing method and reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021398488A CN1189671C (en) | 2002-12-20 | 2002-12-20 | Liquid controlled valve reversing method and reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1421619A CN1421619A (en) | 2003-06-04 |
| CN1189671C true CN1189671C (en) | 2005-02-16 |
Family
ID=4750254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021398488A Expired - Fee Related CN1189671C (en) | 2002-12-20 | 2002-12-20 | Liquid controlled valve reversing method and reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1189671C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2179204B1 (en) * | 2007-07-18 | 2011-11-23 | Schaeffler Technologies AG & Co. KG | Valve part for a control valve for control of pressure medium flows |
-
2002
- 2002-12-20 CN CNB021398488A patent/CN1189671C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1421619A (en) | 2003-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHUZHOU SOUTHERN VALVE CO., LTD. Free format text: FORMER OWNER: NANFANG VALVE MFG. CO., LTD., ZHUZHOU Effective date: 20060210 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060210 Address after: 412007 Zhuzhou City Development Zone, Hunan Province Industrial District No. 518 mailbox Patentee after: Zhuzhou Southern Valve Co., Ltd. Address before: 412007 Zhuzhou City Development Zone, Hunan Province Industrial District No. 518 mailbox Patentee before: Zhuzhou Nanfang Valve Manufacture Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050216 Termination date: 20100120 |