CN101832416A - Pressure-limiting stop valve - Google Patents
Pressure-limiting stop valve Download PDFInfo
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- CN101832416A CN101832416A CN201010171841A CN201010171841A CN101832416A CN 101832416 A CN101832416 A CN 101832416A CN 201010171841 A CN201010171841 A CN 201010171841A CN 201010171841 A CN201010171841 A CN 201010171841A CN 101832416 A CN101832416 A CN 101832416A
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- cavity
- limiting
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Abstract
The invention relates to a pressure-limiting stop valve. The pressure-limiting stop valve comprises a valve seat, wherein a source water inlet, a source water outlet and a filtered water outlet, which are communicated with one another, are formed in the valve seat; and a pressure-limiting component is arranged in a channel by which the filtered water outlet is communicated with the source water inlet and the source water outlet. The pressure-limiting stop valve is additionally provided with the pressure-limiting component in the channel by which the filtered water outlet is communicated with the source water inlet and the source water outlet; the pressure-limiting component can adopt a pressure-limiting structure similar to the pressure-limiting structure in the conventional water path pressure-limiting valve or pressure-reducing valve; and due to the adoption of the pressure-limiting component, the pressure of water flowing from the filtered water outlet through the pressure-limiting structure can be ensured to be in the set water pressure range so as not to cause potential safety hazard to a water purifier system. Compared with the conventional pressure-limiting valve or pressure-reducing valve arranged in front of a boosting water pump to serve as the pressure-limiting or pressure-reducing component independently, the pressure-limiting component of the scheme has the advantages of saving the valve seat of the pressure-limiting valve and cost, and conveniently installing and applying.
Description
Technical field
The present invention relates to a kind of pressure-limiting stop valve.
Background technique
At present; the three-way valve of pure water machine system or tee union all only have the function of common threeway; the function and the filtering function that do not have pressure limiting; on the one hand; when source water hydraulic pressure is bigger; usually can cause potential safety hazard to pure water machine system, common way is to set up a pressure-limit valve to solve the bigger problem of source water hydraulic pressure in the water route.But, in pure water machine system, not only use reduction valve but also use three-way valve, increase the cost of required accessory of pure water machine system and installation.On the other hand, existing valve does not have filtering function, supercharging with the function of cutting off the water supply is cut off the water supply first order filter element that pump can only be installed on pure water machine system is after the PP face lauter tub, that is to say, the cotton lauter tub of PP directly docks with the main water supply tube net, when source water hydraulic pressure was higher, there was bigger pressure-bearing potential safety hazard in this lauter tub; Therefore in order to promote the Safety performance of domestic water purifying machine, to have the pressure-limiting stop valve of pressure limiting function and filtering function and the supercharging pump stack mounting water purification machine first order filter element of cutting off the water supply is before the cotton lauter tub of PP, promptly becomes the necessary and feasible scheme that improves the domestic water purifying machine Safety performance.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pressure-limiting stop valve with pressure limiting function, and this pressure-limiting stop valve can solve the potential safety hazard of bringing when water hydraulic pressure in source is big in the pure water machine system.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: pressure-limiting stop valve, comprise pedestal, the source water inlet, source water water outlet, the water purifier interface that have mutual connection in the pedestal, be provided with the filter screen with hollow duct in the passage that described source water inlet, source water water outlet are connected, the filter screen two ends are respectively by ring seal circle and base internal wall sealing and fixing before ring seal circle, the filter screen behind the filter screen; Described filter screen is cylindrical, hollow duct in it constitutes the source water channel, the outer basin of filter screen constitutes filter back water cavity, be provided with the pressure limiting assembly in the passage that described water purifier interface and source water inlet and source water water outlet are connected, pressure limiting assembly feed-water end communicates with filter opisthogenesis water channel, and pressure limiting assembly waterexit end communicates with the water purifier interface; Described pressure limiting assembly comprises water shutoff mouth, reaction diaphragm and the center controlling rod that is formed by base body, described reaction diaphragm periphery is sealingly fastened between pedestal and the gland, the reaction diaphragm central position is sealingly fastened in controlling rod upper-end surface, center by pad and tightening nut, cavity between described reaction diaphragm and the pedestal constitutes the negative pressure water cavity, the negative pressure water cavity is connected by water flowing runner and water purifier interface, cavity between described reaction diaphragm and the gland constitutes atmospheric pressure cavity, gland is provided with vent, and atmospheric pressure cavity is connected by vent and ambient atmosphere; The end that described center controlling rod passes the water shutoff mouth is provided with the sealed bolster that seals this water shutoff mouth, and sealed bolster and water shutoff mouth mate and be fixed on center controlling rod end by sealing fixture; Be provided with in the described negative pressure water cavity and help the envelope spring, help envelope spring one end to act on the base body internal surface that constitutes the negative pressure water cavity, the other end acts on the internal surface of controlling rod upper end, center; Drive center controlling rod to-and-fro motion under the acting in conjunction of described center controlling rod hydraulic pressure in helping envelope spring, negative pressure water cavity and filter back water cavity and constitute the control unit of control water shutoff saliva stream in the conversion of switching two states.
The pressure-limiting stop valve of this programme water out and source water inlet and filter in the passage that preceding source water out connects and set up the pressure limiting assembly after filter, this pressure limiting assembly can adopt the pressure limiting structure that is similar in existing water route pressure-limit valve or the reduction valve, after adopting the pressure limiting assembly, can guarantee that the hydraulic pressure that filter back water out flows out behind pressure limiting structure is limited in the range hydraulic pressure of setting, can not cause potential safety hazard to pure water machine system.Compare as the limited (less) pressure assembly separately before pressure-limit valve or reduction valve are located at booster water pump with existing, the pressure limiting assembly of this programme has been saved the pressure-limit valve valve seat, saves cost and is convenient to install and use.This structure can be filtered source water owing to be provided with filter screen in the passage that source water inlet, source water out are connected, and filtered water source is by filtering the position that the back water out can be delivered to needs to use filter back water; Filter screen in this pressure-limiting stop valve can be made cylindric, the hollow duct of cylindric filter screen is the source water channel, when the source of unlatching water out uses source water, source water in the water channel of source can wash the filter screen inwall, play the effect of cleaning filter screen, therefore the filter screen of this pressure-limiting stop valve is difficult for stopping up, and can use for a long time also and need not clean.
The end that described filter screen closes on the source water inlet is fixed on the preceding ring of filter screen, and the ring seal circle is located between preceding ring of filter screen and the valve base inner wall before the filter screen; The end that filter screen closes on source water water outlet is fixed in behind the filter screen on the ring, and the ring seal circle is located at behind the filter screen between the ring and valve base inner wall behind the filter screen.
To sum up, the invention has the beneficial effects as follows:
1, pressure-limiting stop valve of the present invention water out and source water inlet and filter in the passage that preceding source water out connects and set up the pressure limiting assembly after filter, can guarantee that the hydraulic pressure that filter back water out flows out behind pressure limiting structure is limited in the range hydraulic pressure of setting, can not cause potential safety hazard to pure water machine system.Compare as the limited (less) pressure assembly separately before pressure-limit valve or reduction valve are located at booster water pump with existing, the pressure limiting assembly of this programme has been saved the pressure-limit valve valve seat, saves cost and is convenient to install and use.
2, owing to be provided with filter screen in the passage that source water inlet, source water out are connected, can filter source water, filtered water source is by filtering the position that the back water out can be delivered to needs to use filter back water; Filter screen in this pressure-limiting stop valve can be made cylindric, the hollow duct of cylindric filter screen is the source water channel, when the source of unlatching water out uses source water, source water in the water channel of source can wash the filter screen inwall, play the effect of cleaning filter screen, therefore the filter screen of this pressure-limiting stop valve is difficult for stopping up, and can use for a long time also and need not clean.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Mark and corresponding component title among the figure: 201-source water out, 202-pedestal, 203-positioning baffle, encircle ring seal circle behind the 205-filter screen, 207-water purifier interface behind the 204-filter screen, 210-center controlling rod, 211-reaction diaphragm, 212-pad, the 213-vent, 214-gland, 215-tightening nut, 216-negative pressure water cavity, 217-water shutoff mouth, 218-sealed bolster, the 219-sealing fixture, 220-helps the envelope spring, ring seal circle before the 221-filter screen, 222-filter back water cavity, ring before the 223-filter screen, 224-source water channel, 225-source water inlet, the 226-filter screen, 227-seal ring, 228-sealing cover, 229-water flowing runner, the 230-air cavity.
Embodiment
Extremely shown in Figure 2 referring to Fig. 1, pressure-limiting stop valve of the present invention comprises pedestal 202, the source water inlet 225, source water out 201, the water purifier interface 207 that have mutual connection in the pedestal 202 are provided with the pressure limiting assembly in the passage that described water purifier interface 207 and source water inlet 225 and source water out 201 are connected; Be provided with the filter screen 226 with hollow duct in the passage that described source water inlet 225, source water out 201 are connected, filter screen 226 two ends are fixed by ring seal circle before ring seal circle 205, the filter screen behind the filter screen 221 and pedestal 202 inner wall sealings respectively; Described filter screen 226 is cylindrical, and the hollow duct in it constitutes source water channel 224, and filter screen 226 outer basins constitute filter back water cavity 222, and described pressure limiting assembly feed-water end communicates with water cavity 222 after the filter, and pressure limiting assembly waterexit end communicates with water purifier interface 207; The end that described filter screen 226 closes on source water inlet 225 is fixed on the preceding ring seal circle 221 of filter screen, and ring seal circle 221 is located between preceding ring 223 of filter screen and pedestal 202 inwalls before the filter screen; The end that filter screen 226 closes on source water out 201 is fixed in behind the filter screen on the ring 204, and ring seal circle 205 is located at behind the filter screen between the ring 204 and pedestal 202 inwalls behind the filter screen; Described pressure limiting assembly comprises the water shutoff mouth 217 that is formed by pedestal 202 bodies, reaction diaphragm 211 and center controlling rod 210, described reaction diaphragm 211 peripheries are sealingly fastened between pedestal 202 and the gland 214, reaction diaphragm 211 central positions are sealingly fastened in center controlling rod 210 upper-end surfaces by pad 212 and tightening nut 215, cavity between described reaction diaphragm 211 and the pedestal 202 constitutes negative pressure water cavity 216, negative pressure water cavity 216 is connected by water flowing runner 229 and water purifier interface 207, cavity between described reaction diaphragm 211 and the gland 214 constitutes air cavity 230, gland 214 is provided with vent 213, and air cavity 230 is connected by vent 213 and ambient atmosphere; The end that described center controlling rod 210 passes water shutoff mouth 217 is provided with the sealed bolster 218 of this water shutoff mouth 217 of sealing, and sealed bolster 218 is fixed on center controlling rod 210 ends with water shutoff mouth 217 couplings and by sealing fixture 219; Be provided with in the described negative pressure water cavity 216 and help envelope spring 220, help envelope spring 220 1 ends to act on pedestal 202 body internal surface that constitute negative pressure water cavity 216, the other end acts on the internal surface of center controlling rod 210 upper ends; Drive center controlling rod 210 to-and-fro motion under the acting in conjunction of described center controlling rod 210 hydraulic pressure in helping envelope spring 220, negative pressure water cavity 216 and filter back water cavity 222 and constitute the control unit of control water shutoff mouth 217 current in the conversion of switching two states.
Claims (2)
1. pressure-limiting stop valve, comprise pedestal (202), the source water inlet (225), source water water outlet (201), the water purifier interface (207) that have mutual connection in the pedestal (202), it is characterized in that, be provided with the filter screen (226) with hollow duct in the passage that described source water inlet (225), source water water outlet (201) are connected, filter screen (226) two ends are fixed with pedestal (202) inner wall sealing by ring seal circle (221) before ring seal circle (205), the filter screen behind the filter screen respectively; Described filter screen (226) is cylindrical, hollow duct in it constitutes source water channel (224), the outer basin of filter screen (226) constitutes filter back water cavity (222), be provided with the pressure limiting assembly in the passage that described water purifier interface (207) and source water inlet (225) and source water water outlet (201) are connected, pressure limiting assembly feed-water end communicates with filter back water cavity (222), and pressure limiting assembly waterexit end communicates with water purifier interface (207); Described pressure limiting assembly comprises the water shutoff mouth (217) that is formed by pedestal (202) body, reaction diaphragm (211) and center controlling rod (210), described reaction diaphragm (211) periphery is sealingly fastened between pedestal (202) and the gland (214), reaction diaphragm (211) central position is sealingly fastened in center controlling rod (210) upper-end surface by pad (212) and tightening nut (215), cavity between described reaction diaphragm (211) and the pedestal (202) constitutes negative pressure water cavity (216), negative pressure water cavity (216) is connected by water flowing runner (229) and water purifier interface (207), cavity between described reaction diaphragm (211) and the gland (214) constitutes air cavity (230), gland (214) is provided with vent (213), and air cavity (230) is connected by vent (213) and ambient atmosphere; The end that described center controlling rod (210) passes water shutoff mouth (217) is provided with the sealed bolster (218) that seals this water shutoff mouth (217), and sealed bolster (218) is fixed on center controlling rod (210) end with water shutoff mouth (217) coupling and by sealing fixture (219); Be provided with in the described negative pressure water cavity (216) and help envelope spring (220), help envelope spring (220) one ends to act on pedestal (202) body internal surface that constitutes negative pressure water cavity (216), the other end acts on the internal surface of center controlling rod (210) upper end; Drive center controlling rod (210) to-and-fro motion constitutes the control unit of control water shutoff mouth (217) current in the conversion of switching two states under the acting in conjunction of described center controlling rod (210) hydraulic pressure in helping envelope spring (220), negative pressure water cavity (216) and filter back water cavity (222).
2. pressure-limiting stop valve according to claim 1, it is characterized in that, the end that described filter screen (226) closes on source water inlet (225) is fixed on the preceding ring of filter screen (223), and ring seal circle (221) encircles between (223) and pedestal (202) inwall before being located at filter screen before the filter screen; The end that filter screen (226) closes on source water water outlet (201) is fixed in behind the filter screen on the ring (204), and ring seal circle (205) is located at behind the filter screen between the ring (204) and pedestal (202) inwall behind the filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171841A CN101832416A (en) | 2010-05-12 | 2010-05-12 | Pressure-limiting stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171841A CN101832416A (en) | 2010-05-12 | 2010-05-12 | Pressure-limiting stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101832416A true CN101832416A (en) | 2010-09-15 |
Family
ID=42716584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010171841A Pending CN101832416A (en) | 2010-05-12 | 2010-05-12 | Pressure-limiting stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101832416A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135193A (en) * | 2011-03-29 | 2011-07-27 | 吴瑞昌 | Three-way valve |
| CN110397757A (en) * | 2019-08-05 | 2019-11-01 | 宁波川渡流体科技有限公司 | A kind of triple valve and its pure water machine system for being constituted of cutting off the water supply |
| CN112066236A (en) * | 2020-09-24 | 2020-12-11 | 宁波华成阀门有限公司 | Novel from steady voltage type valve |
| WO2020248292A1 (en) * | 2019-06-12 | 2020-12-17 | 广东吉宝电器科技有限公司 | Negative pressure valve and water supply system comprising same |
-
2010
- 2010-05-12 CN CN201010171841A patent/CN101832416A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135193A (en) * | 2011-03-29 | 2011-07-27 | 吴瑞昌 | Three-way valve |
| WO2020248292A1 (en) * | 2019-06-12 | 2020-12-17 | 广东吉宝电器科技有限公司 | Negative pressure valve and water supply system comprising same |
| CN110397757A (en) * | 2019-08-05 | 2019-11-01 | 宁波川渡流体科技有限公司 | A kind of triple valve and its pure water machine system for being constituted of cutting off the water supply |
| CN112066236A (en) * | 2020-09-24 | 2020-12-11 | 宁波华成阀门有限公司 | Novel from steady voltage type valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100915 |