CN201787153U - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
- Publication number
- CN201787153U CN201787153U CN2010202139798U CN201020213979U CN201787153U CN 201787153 U CN201787153 U CN 201787153U CN 2010202139798 U CN2010202139798 U CN 2010202139798U CN 201020213979 U CN201020213979 U CN 201020213979U CN 201787153 U CN201787153 U CN 201787153U
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- spool
- valve core
- throttling element
- 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 - Fee Related
Links
Images
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
A pressure reducing valve comprises a valve body, a valve core, springs and sealing parts. The valve core is provided with a fluid channel; a fluid adjusting structure consists of a fluid inlet of the fluid channel, or a throttle opening on the end face of the valve core and on the valve body or a throttle opening on an intermediate throttle part; the sealing parts are arranged between the valve core and the valve body and between the valve body and the intermediate throttle part; the springs are arranged between the valve core and the valve body and between the intermediate throttle part and the valve body; and retaining rings for limiting the initial positions of the valve core and the intermediate throttle part are arranged on the valve body. The valve core and the valve body can slide relatively, the valve core and the intermediate throttle part can slide relatively, the intermediate throttle part and the valve body can slide relatively, and openness of a throttle structure is increased or decreased and even the throttle structure is closed, so that pressure reduction and stabilization are realized. Displacement of the valve core has less lever action on the overflowing area of the valve, the overflowing area of the valve only depends on secondary fluid pressure, spring force and internal resistance, and the pressure reducing valve has the advantages of stable adjusting process, fine stability of the secondary fluid pressure, simple structure, small volume, low cost and particular suitability for low-pressure small-flow occasions.
Description
Technical field the present invention relates to a kind of valve, is specifically related to a kind of reduction valve.
Hydraulic pressure that background technique is too high and hydraulic pressure frequent variations, not only cause the watering equipment water-outlet quantity suddenly big or suddenly small, cause the wasting of resources, influence normal water, but also have a strong impact on the working life and the proper functioning of solar water heater, intelligent instrument (as the sender water meter), IC-card water control machine, sensing sanitary appliance, water correction plant.With certain famous brand name solar energy heat collection pipe is example, and the specified bearing capacity of this heat collecting pipe is 0.7MPa, if though long-term work under this hydraulic pressure or hydraulic pressure be lower than specified hydraulic pressure, but frequent variations will have a strong impact on heat collecting pipe working life.According to the said firm's introduction, lack the development bottleneck that the decompression stable-pressure device that is fit to has become pressure-bearing type solar water heater.
Commercially available reduction valve adopts the throttle style of similar stop valve, the axial displacement of throttling valve core is big to the leverage of valve area of passage, be that bigger variation takes place the less area of passage that will cause valve that moves axially of spool, degree of regulation is not high, the outlet pressure fluctuation is big, generally is difficult to satisfy the use occasion of aforementioned little caliber, small flow, low-pressure.A few high-end product (as Honeywell, Kaleffi reduction valve), though can be used for aforementioned occasion, because of reasons such as links such as its design, manufacturing, material all have higher requirements, price has surpassed the ability to bear of most domestic consumers.
It is little to the leverage of valve area of passage that summary of the invention the purpose of this invention is to provide a kind of spool travel, the area of passage of valve only depends on a secondary fluid pressure, spring force and internal drag, adjustment process steadily, a secondary fluid pressure stability is good, simple in structure, volume is little, cost is low, can be widely used in the reduction valve of aforementioned use occasion.
Technological scheme of the present invention is: reduction valve comprises valve body, spool, spring, Sealing, spool has the fluid passage, the restriction or the restriction on the middle throttling element of going on head piece or spool end and the valve body of described fluid passage constitute the fluid regulation structure, between spool and the valve body, between valve body and the middle throttling element sealing is arranged, between spool and the valve body, spring is arranged, the back-up ring of restricted spool and middle throttling element initial position on the valve body between middle throttling element and the valve body.But slide relative between spool and the valve body, between spool and the middle throttling element, between middle throttling element and the valve body, when slide relative took place for it, the aperture of throttle structure increased or reduces even close, thereby realizes decompression, voltage stabilizing.
Restriction on described valve body or the middle throttling element is the opening on valve body or the middle throttling element wall.
Described spool is the hollow member of inner up/down perforation.
Described spool is a porose member on end sealing, an end opening and the wall.
The fluid passage that described spool has is the path of passing through of a secondary fluid.
Between described spool and the middle throttling element Sealing is arranged.
Described Sealing comprises circle, pad, the film with sealing function.
The invention has the beneficial effects as follows that a kind of spool travel is provided is little to the leverage of valve area of passage, decompression, voltage stabilizing process are steadily, a secondary fluid pressure stability is good, simple in structure, volume is little, cost is low, be particularly suitable for the reduction valve of low pressure small flow service condition.
Description of drawings Fig. 1 is the main sectional view of the embodiment of the invention one.
Fig. 2 is main sectional view of the embodiment two.
Fig. 3 is main sectional view of the embodiment three.
Fig. 4 is main sectional view of the embodiment four.
Among the figure, 1, valve body, 1-1, equalizing orifice, 1-2, restriction, 2, back-up ring down, 3, Sealing, 4, spool, is gone into head piece at 4-1, and 5, spring, 6, Sealing, 7, Sealing, 8, middle throttling element, 8-1, inflow port, 8-2, restriction, 9, go up back-up ring, 10, spring, 11, Sealing; P1, a hydrodynamic pressure, P2, a secondary fluid pressure (outlet pressure that the present invention sets).
Embodiment Figure 1 shows that embodiments of the invention one, and valve body 1 is the hollow structure of up-small and down-big, upper end closed, lower openings, and restriction 1-2 is arranged on the wall of top segment, on the big section wall equalizing orifice 1-1 is arranged, and the screw thread of connecting tube is arranged on the valve body.Spool 4 is hollow member that are inverse-T-shaped cross section, and big small end is set in the big segment of body cavity, and Sealing 3, Sealing 6 are arranged between the two, and Sealing 7 and following back-up ring 2 are separately fixed on the valve body, and spring 5 acts between valve body and the spool.
Under the working state, the present invention is connected with pipeline up and down by screw thread, and one time fluid flows into from the upper end, and a secondary fluid flows out from the lower end, fluid enters valve body by the throttle structure that forms between restriction 1-2 and the spool upper-end surface, and one time fluid does not produce axial force to spool.
When P1≤P2, spool is motionless, valve is in maximum opening, and promptly a fluid directly flows out (ignoring the valve resistance) by the present invention without decompression.
When P1＞P2, P2 rises thereupon in the short time, breaks the equilibrium of forces between P2 and the spring 5, promotes to move on the spool, reduces valve opening, produces decompression, makes P2 be returned to setting value, realizes reducing pressure, voltage stabilizing; If valve downstream or watering equipment are closed, spool will move on will continuing, forms sealing between upper-end surface and Sealing 7, is Shuttoff Valve that it is stable to keep P2.
Fig. 2 is embodiments of the invention two, between valve body and spool, set up middle throttling element 8, inflow port 8-1 is arranged on it, restriction 8-2, between itself and valve body, the spool Sealing 6 and Sealing 11 are arranged respectively, last back-up ring 9 and Sealing 7 are separately fixed on valve body and the middle throttling element, and spring 10 is arranged between middle throttling element and the valve body, but slide relative between middle throttling element and valve body, the spool.Raised head face on the valve body and spool upper-end surface form the I and II throttle structure with restriction 8-2 respectively, and when the boss on the middle throttling element external cylindrical surface combined with the boss on the valve body, the one-level throttle structure had minimum area of passage.
Downforce in the middle of fluid acts on the throttling element 8 is during less than the setting valve of spring 10, and middle throttling element 8 is failure to actuate, and the one-level throttle structure is not worked; Otherwise, central between down pressure on the throttling element 8 during greater than the setting valve of spring 10, middle throttling element 8 moves down, the work of one-level throttle structure produces throttling action.The working procedure of two-step throttle structure is with embodiment one.
The pressure range that present embodiment adapts to is wideer, also helps reducing the valve noise; Simultaneously, present embodiment also can be regulated flow and pressure with the I and II throttle structure respectively, realizes voltage stabilization and current stabilization.
Fig. 3 is embodiments of the invention three, in this embodiment, adopts scyewed joint between following ring washer 2 and the valve body 1, can adjust the setting value of P2 by the decrement of adjusting spring 5; Sealing 3 adopts diaphragm seal, and Sealing 11 acts between spool and the valve body.All the other are with embodiment two.
Fig. 4 is embodiments of the invention four, spool, valve body all slightly become down cup-like structure, restriction 1-2 is arranged respectively on the wall and go into head piece 4-1, and working procedure and embodiment one are similar, the main distinction is cut-off valve when between the two seals below restriction 1-2 is in, and spool stroke is bigger.Present embodiment setting-in in-line.
The present invention is suitable for but is not limited to water or other fluid.
Claims (7)
1. reduction valve, comprise valve body, spool, spring, it is characterized in that spool has the fluid passage, the restriction or the restriction on the middle throttling element of going on head piece or spool end and the valve body of described fluid passage constitute the fluid regulation structure, between spool and the valve body, between valve body and the middle throttling element sealing is arranged, between spool and the valve body, spring is arranged, the back-up ring of restricted spool and middle throttling element initial position on the valve body between middle throttling element and the valve body.
2. reduction valve according to claim 1 is characterized in that: the restriction on described valve body or the middle throttling element is the opening on valve body or the middle throttling element wall.
3. reduction valve according to claim 1 is characterized in that: the fluid passage that described spool has is the path of passing through of a secondary fluid.
4. reduction valve according to claim 1 is characterized in that: described spool is the hollow member of inner up/down perforation.
5. reduction valve according to claim 1 is characterized in that: described spool is a porose member on end sealing, an end opening and the wall.
6. reduction valve according to claim 1 is characterized in that: between described spool and the middle throttling element sealing is arranged.
7. reduction valve according to claim 1 is characterized in that: described Sealing comprises circle, pad, the film with sealing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202139798U CN201787153U (en) | 2010-05-25 | 2010-05-25 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202139798U CN201787153U (en) | 2010-05-25 | 2010-05-25 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787153U true CN201787153U (en) | 2011-04-06 |
Family
ID=43819116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202139798U Expired - Fee Related CN201787153U (en) | 2010-05-25 | 2010-05-25 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314141A (en) * | 2017-06-16 | 2017-11-03 | 深圳市红尚科技有限公司 | Straight-through valve and method for controlling water pressure by straight-through valve |
-
2010
- 2010-05-25 CN CN2010202139798U patent/CN201787153U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314141A (en) * | 2017-06-16 | 2017-11-03 | 深圳市红尚科技有限公司 | Straight-through valve and method for controlling water pressure by straight-through valve |
| CN107314141B (en) * | 2017-06-16 | 2023-09-05 | 深圳市红尚科技有限公司 | Straight-through valve and method for controlling water pressure by same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203384471U (en) | Embedded part for sanitation and assembly unit of faucet for sanitation | |
| CN201827476U (en) | Dynamic pressure differential balance valve | |
| CN102678994B (en) | Automatic decompression voltage and current stabilizer | |
| CN101929575B (en) | Dynamic differential pressure balancing valve | |
| CN2828497Y (en) | Automatic pressure regulating water-saving valve | |
| CN201795125U (en) | Dynamic flow balancing valve | |
| CN101294761B (en) | Thermal expansion valve | |
| CN201787153U (en) | Pressure reducing valve | |
| CN201363330Y (en) | Plate-type one-way speed-regulating valve | |
| CN102261502A (en) | Pressure reducing valve | |
| CN201251327Y (en) | Thermostatic expansion valve | |
| CN202209456U (en) | Differential type safety valve | |
| CN107558967B (en) | Steady flow regulator for water injection well | |
| CN2844599Y (en) | Constant-flow water-saving valve | |
| CN103075544B (en) | Anti-scald constant-temperature faucet | |
| CN203926808U (en) | A kind of New Type Flow Control Valve | |
| CN210566498U (en) | Pressure reducing valve for water | |
| CN210106733U (en) | Automatic thermostatic valve based on temperature control shape memory alloy | |
| CN204704184U (en) | Relief valve | |
| CN201462132U (en) | Self-adaptable constant flow control valve | |
| CN209638487U (en) | A kind of novel flow control valve | |
| CN202546056U (en) | Cutting ferrule joint with throttle function | |
| CN203585471U (en) | Direct flow piston type guide adjustable reducing valve | |
| CN202719225U (en) | Reducing valve | |
| JP2022541727A (en) | Throttle valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20130525 |