CN2592936Y - Double-diaphragm type hydraulic control reversing valve - Google Patents
Double-diaphragm type hydraulic control reversing valve Download PDFInfo
- Publication number
- CN2592936Y CN2592936Y CN 02277923 CN02277923U CN2592936Y CN 2592936 Y CN2592936 Y CN 2592936Y CN 02277923 CN02277923 CN 02277923 CN 02277923 U CN02277923 U CN 02277923U CN 2592936 Y CN2592936 Y CN 2592936Y
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- Prior art keywords
- diaphragm
- valve
- piston
- cavity
- chamber
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- Expired - Lifetime
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- 239000012530 fluid Substances 0.000 claims abstract description 24
- 210000003660 reticulum Anatomy 0.000 description 7
- 238000007789 sealing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Fluid-Driven Valves (AREA)
Abstract
A double-diaphragm type hydraulic control reversing valve comprises a valve body, and is characterized in that the upper end surface and the lower end surface of the valve body are respectively connected with an upper valve cover and a lower valve cover, a piston capable of moving up and down is arranged in an inner cavity of the valve body, a drainage hole capable of being communicated with a fluid inlet arranged on the valve body and an upper main valve cavity interface or a lower main valve cavity interface is arranged on the inner wall of the piston, a large diaphragm and a small diaphragm are respectively arranged at two ends of the piston, a closed large diaphragm cavity is formed between the large diaphragm and the upper valve cover, and a small diaphragm cavity is also formed between the small diaphragm and the lower valve cover; the large diaphragm cavity is respectively provided with a large diaphragm cavity drainage inlet and a drainage outlet which are connected with the drainage tube, and the inner cavity of the piston is communicated with the small diaphragm cavity. The utility model discloses the characteristic that make full use of fluid itself has utilizes the fluid pressure difference principle ingeniously, utilizes self fluid to commutate, therefore does not worry the interior hourglass of fluid in the valve, and the realization valve that can be very convenient is sealed, simultaneously owing to set up the control valve in the export in big diaphragm chamber, can realize remote control.
Description
Technical field:
The utility model relates to a kind of structure of control valve, is 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 in the utility model is the deficiency that overcomes existing selector valve, proposes a kind of two diaphragm type pilot operated directional control valves that can change control valve fluid output direction by the pressure reduction between the liquid.
The utility model is to solve the problems of the technologies described above by following technological scheme.It 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, offer the conduction hole that can be communicated with on this piston inner wall with the fluid input offered on the valve body and main valve epicoele interface or main valve cavity of resorption interface, the piston two ends are equipped with big diaphragm and Small diaphragm-piece respectively, form an airtight big diaphragm chamber between big diaphragm and the bonnet, also form an airtight Small diaphragm-piece chamber between Small diaphragm-piece and the bottom flange; Offer big diaphragm chamber drainage inlet that joins with drainage tube and the big diaphragm chamber drainage outlet of controlling by control valve on the described big diaphragm chamber respectively, piston cavity is communicated with the Small diaphragm-piece chamber, control hydrodynamic pressure in the big diaphragm chamber by control valve, pressure reduction by large and small diaphragm chamber moves up and down piston again, thereby realizes the commutation of valve.
The utility model 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 big 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 utility model 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 the utility model structure embodiment schematic representation.
Among the figure:
1. bottom flange 2. Small diaphragm-piece chambeies 3. Small diaphragm-piece chamber conduction holes
4. piston core plug 5. Small diaphragm-pieces 6. main valve cavity of resorption interfaces
7. main valve epicoele interface 8. valve bodies 9. pistons
10. O-ring seals 11. big diaphragm 12. diaphragm pressing plates
13. big diaphragm chamber drainage exports 14. control valves, 15. bonnets
16. big diaphragm chamber drainage inlet 17. big diaphragm chamber 18. drainage tubes
19. current limiting tube 20. fluid inputs 21. piston conduction holes
22. the upper and lower chamber of main valve drainage outlet
Embodiment:
The utility model is the improvement of carrying out at defective of the prior art, the characteristic that is had according to fluid itself designs, it is to establish piston in change valve inside, the piston two ends are equipped with big diaphragm and Small diaphragm-piece respectively, with last, form airtight big diaphragm chamber and the Small diaphragm-piece chamber that differs in size between the bottom flange, make by the pressure between the control valve control inflow two inner chamber liquid then and form pressure reduction between the two, the piston that is arranged on body cavity can produce under the effect of its pressure and move, along with constantly moving of piston, the intercommunicating pore of offering on the piston as required with valve body on the corresponding entrance and exit offered be communicated with, thereby realized the commutation of valve.
Accompanying drawing has provided an embodiment of the present utility model, as shown in the figure, the utility model comprises valve body 8, it is characterized in that: valve body 8 is established inner chamber, offer fluid input 20 on it, on the main valve, cavity of resorption draining hole 22, main valve cavity of resorption interface 6 and main valve epicoele interface 7, on the valve body 8, the lower end surface is connected with bottom flange 1 with bonnet 15 respectively, valve body 8 inner chambers are equipped with piston 9, can slide along valve body 8 internal chamber walls, the one end is equipped with big diaphragm 11, and big diaphragm 11 can be dish or sheet shape shape, on, lower surface all is equipped with diaphragm pressing plate 12, diaphragm edge between valve body 8 and bonnet 15, both not can be used as Sealing between the two, simultaneously again and form an airtight big diaphragm chamber 17 between the bonnet 15, offer the big diaphragm chamber drainage inlet 16 and the big diaphragm chamber drainage outlet 13 that are communicated with drainage tube 18 on the bonnet 15, be communicated with big diaphragm chamber 17 respectively, drainage tube 18 pipelines are provided with current limiting tube 19, are communicated with fluid input 20 simultaneously.Export in big diaphragm chamber drainage and to be provided with a control valve 14 on 13 pipelines, this valve can be manual, also can be electronic or Electromagnetic Control.The outflow of big diaphragm chamber 17 inner fluids of control valve 14 may command.The other end of piston 9 is equipped with Small diaphragm-piece 5, this Small diaphragm-piece 5 also is dish or sheet shape shape, its upper and lower surface also is equipped with the diaphragm pressing plate, diaphragm edge is located between valve body 8 and the bottom flange 1, equally, both can be used as Sealing between the two, simultaneously again and also form an airtight Small diaphragm-piece chamber 2 between the bottom flange 1.Piston 9 is the hollow body of an end opening, its exterior edge face has piston conduction hole 21 according to the position that piston 9 slides, opening end is with piston core plug 4, have the Small diaphragm-piece chamber conduction hole 3 that is communicated with piston 9 core chambeies and Small diaphragm-piece chamber 2 on the piston core plug 4 again, fluid can enter in the Small diaphragm-piece chamber through Small diaphragm-piece chamber conduction hole 3 from fluid input 20 in piston conduction hole 21 enters piston 9 core chambeies again.
The utility model commutation action is by the press water control in big diaphragm chamber 17 and Small diaphragm-piece chamber 2.Pressure medium enters big diaphragm chamber 17 and Small diaphragm-piece chamber 2 from fluid input 20, when control valve 14 is opened, the pressure of big diaphragm chamber 17 is discharged (pressure release) from drainage outlet 13, the pressure in Small diaphragm-piece chamber 2 increases relatively, make on the piston 9 and move, fluid input 20 is communicated with main valve cavity of resorption interface 6 by piston 9 core chambeies, and pressure medium enters main valve control room cavity of resorption, and main valve is opened.When control valve 14 was closed, because big diaphragm chamber 17 is bigger than the pressure in Small diaphragm-piece chamber 2, piston 9 moved down, fluid input 7 is communicated with main valve epicoele interface 7 by piston 9 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 pair of diaphragm type pilot operated directional control valve, it comprises valve body (8), it is characterized in that on the described valve body (8), the lower end surface is connected with bottom flange (1) with bonnet (15) respectively, valve body (8) inner chamber is equipped with the piston (9) that can move up and down within it, offer the conduction hole (21) that can be communicated with on this piston (9) inwall with the fluid input (20) offered on the valve body (8) and main valve epicoele interface (7) or main valve cavity of resorption interface (6), piston (9) two ends are equipped with big diaphragm (11) and Small diaphragm-piece (5) respectively, form an airtight big diaphragm chamber (17) between big diaphragm (11) and the bonnet (15), also form an airtight Small diaphragm-piece chamber (2) between Small diaphragm-piece (5) and the bottom flange (1); Offer big diaphragm chamber drainage inlet (16) that joins with drainage tube (18) and the big diaphragm chamber drainage outlet of being controlled by control valve (14) (13) on the described big diaphragm chamber (17) respectively, piston (9) inner chamber is communicated with Small diaphragm-piece chamber (2).
2, according to claim 1 pair of diaphragm type pilot operated directional control valve is characterized in that drainage tube (18) pipeline that communicates with big diaphragm chamber drainage inlet (16) is provided with current limiting tube (19).
3, according to claim 1 and 2 pair of diaphragm type pilot operated directional control valve is characterized in that control valve (14) is manual, electronic or Electromagnetic Control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277923 CN2592936Y (en) | 2002-12-20 | 2002-12-20 | Double-diaphragm type hydraulic control reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277923 CN2592936Y (en) | 2002-12-20 | 2002-12-20 | Double-diaphragm type hydraulic control reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2592936Y true CN2592936Y (en) | 2003-12-17 |
Family
ID=33741393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02277923 Expired - Lifetime CN2592936Y (en) | 2002-12-20 | 2002-12-20 | Double-diaphragm type hydraulic control reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2592936Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949396A (en) * | 2010-09-30 | 2011-01-19 | 无锡英特帕普威孚液压有限责任公司 | Hydraulic reversing valve with return oil stepless speed control function |
-
2002
- 2002-12-20 CN CN 02277923 patent/CN2592936Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949396A (en) * | 2010-09-30 | 2011-01-19 | 无锡英特帕普威孚液压有限责任公司 | Hydraulic reversing valve with return oil stepless speed control function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050330 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |