CN205715869U - A kind of pressure maintaining valve - Google Patents
A kind of pressure maintaining valve Download PDFInfo
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- CN205715869U CN205715869U CN201620398383.7U CN201620398383U CN205715869U CN 205715869 U CN205715869 U CN 205715869U CN 201620398383 U CN201620398383 U CN 201620398383U CN 205715869 U CN205715869 U CN 205715869U
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- valve
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- pressure maintaining
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Abstract
The utility model discloses a kind of pressure maintaining valve, belong to valve technology field, solve in prior art that pressure maintaining valve volume is big and the technical problem of poor sensitivity, pressure maintaining valve of the present utility model, including the valve body being provided with intake tunnel and exhalant canal, it is provided with valve seat in described valve body, flexible member and piston, described piston bush is contained on described valve seat and limits the annular seal space for installing described flexible member, described piston-top surface is resisted against on described valve body, described valve seat is provided with the flow channels for connecting intake tunnel and exhalant canal, described piston moves axially to regulate the aperture of described flow channels upper water-out mouth on described valve seat.
Description
[technical field]
This utility model relates to valve technology field, particularly relates to a kind of pressure maintaining valve.
[background technology]
Pressure maintaining valve plays pressure and the effect of flow in stable water route, prevents water flow pressure change in water route excessive,
Cause equipment frequently to change because of pressure or hypertonia and cause damage consequence, when in water route pressure moment become
When height or step-down, pressure maintaining valve can ensure stablizing of pressure by changing the stroke of valve body inner carrier.
Pressure maintaining valve of the prior art includes that valve body, valve body are provided with intake tunnel and exhalant canal, in valve body
Being provided with piston and spring, owing to spring housing is contained in outside piston, the external diameter thus resulting in spring is relatively large,
In addition, in order to improve the voltage regulation result of pressure maintaining valve, spring needs possess bigger coefficient of elasticity, thus
Needing to increase the line footpath of spring, the external diameter of spring and the increase of line footpath not only can make the volume of whole pressure maintaining valve increase,
Also reduce the sensitivity of spring simultaneously, cause the pressure that pressure maintaining valve can not regulate in water route in time.
[utility model content]
Problem to be solved in the utility model is just to provide a kind of pressure maintaining valve, has volume little, highly sensitive
Feature.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of pressure maintaining valve, including being provided with the valve body of intake tunnel and exhalant canal, be provided with in described valve body valve seat,
Flexible member and piston, described piston bush is contained on described valve seat and limits for installing described flexible member
Annular seal space, described piston-top surface is resisted against on described valve body, and described valve seat is provided with for connecting water inlet logical
Road and the flow channels of exhalant canal, described piston moves axially to regulate described mistake on described valve seat and circulates
The aperture of road upper water-out mouth.
Further, the first sealing ring it is provided with between described piston inner wall and described valve seat.
Further, described flexible member is spring.
Further, described valve seat end face is provided with locating slot, and described piston diapire is provided with and is downwardly extending
Lead, the upper end of described spring is sleeved on described lead, and the lower end of described spring is positioned at described fixed
In the groove of position.
Further, described valve body also includes the pressing plate being connected on valve interior wall, and described pressing plate bottom surface is spaced
Being provided with several protruding, described piston-top surface offsets with described projection, described piston and described valve interior wall it
Between be provided with gap, described pressing plate is provided with the through hole connected with described gap and described exhalant canal.
Further, the inwall of described valve body is interval with multiple boss extended inwardly to form, described work
Plug end face offsets with described boss bottom surface, is provided with gap between described piston and described valve interior wall.
Further, the second sealing ring it is provided with between described valve seat and described valve interior wall.
The beneficial effects of the utility model:
1, the pressure maintaining valve in this utility model includes the valve body being provided with intake tunnel and exhalant canal, sets in valve body
Having valve seat, flexible member and piston, it is close that piston bush is contained on valve seat and limits for elastic elements
Envelope chamber, piston-top surface is resisted against on valve body, and valve seat is provided with the mistake for connecting intake tunnel and exhalant canal
Circulation road, piston moves axially to regulate the aperture of flow channels upper water-out mouth on valve seat.Time initial, bullet
Property compression element sealing in space and set value of elastic, when the pressure in intake tunnel is too small, and piston
The value of elastic that pressure difference between end face pressure experienced and its bottom surface pressure experienced sets more than flexible member
Time, piston moves towards the direction of intake tunnel under pressure, to reduce flow channels upper water-out mouth
Aperture, makes the discharge flowing in exhalant canal reduce, thus reduces the pressure in exhalant canal and piston top
Face pressure experienced；In the process, flexible member is further compressed, and the volume of annular seal space subtracts further
Little, owing to being full of air in annular seal space, therefore the air pressure in annular seal space can be gradually increased, now piston
Elastic force, air pressure, upper and lower two ends pressure common effect under keep stable, to ensure exhalant canal
Interior pressure is in the range of setting.The pressure being subject at spring force, upper and lower two ends with piston in prior art
The lower holding of common effect of power is stably compared, the pressure maintaining valve in this utility model has the benefit that 1, due to
Piston is also acted on by air pressure, and therefore air pressure can share the elastic force of a part, thus can subtract
The elastic force of small element, and then reduce volume and the volume of whole pressure maintaining valve of flexible member；2, due to bullet
Property element is arranged in annular seal space, and therefore flexible member is not easily susceptible to the interference of current, thus improves elasticity
The sensitivity of element and service life；3, multiple parts are simplified, so that the structure of pressure maintaining valve is more
Simply, production cost is reduced.
2, valve seat end face is provided with locating slot, and piston diapire is provided with the lead being downwardly extending, spring
Upper end is sleeved on lead, and the lower end of spring is positioned at locating slot.It is so designed that, spring can be prevented in pressure
Contracting or drawing process offset.
These features of the present utility model and advantage will be detailed in following detailed description of the invention, accompanying drawing
Disclose.
[accompanying drawing explanation]
Below in conjunction with the accompanying drawings this utility model is described further:
Fig. 1 is the structural representation of pressure maintaining valve in this utility model preferred embodiment.
[detailed description of the invention]
The technical scheme of this utility model embodiment is solved by the accompanying drawing below in conjunction with this utility model embodiment
Release and illustrate, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on enforcement
Embodiment in mode, those skilled in the art are obtained other on the premise of not making creative work
Embodiment, broadly falls into protection domain of the present utility model.
In description of the present utility model, it is to be understood that the indicating positions such as term "up" and "down"
Or position relationship is based on orientation shown in the drawings or position relationship, and this practicality of description merely for convenience is new
Type and simplifying describes rather than instruction or the hint device of indication or element must have specific orientation, with
Specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
As it is shown in figure 1, the pressure maintaining valve in this utility model preferred embodiment is mainly used in what pressure frequently changed
Water pipe and gas pipeline.To apply as a example by water pipe, pressure maintaining valve includes valve body 1, peace in valve body 1
Equipped with valve seat 2, piston 3 and flexible member 4, flexible member 4 is spring, shell fragment etc., this preferred embodiment
In the preferred spring of flexible member 4, valve body 1 is provided with intake tunnel 11 and exhalant canal 12, valve body 1
Inwall is provided with positioning boss 13, and valve seat 2 is provided with positioning step 23, and valve seat 2 spins and is fixed on valve body 1
In, now positioning step 23 offsets with positioning boss 13, and valve seat 2 is additionally provided with for connecting intake tunnel
11 and the flow channels of exhalant canal 12, flow channels includes the axial blind hole 20 that is interconnected and the most logical
Hole 21, axial blind hole 20 connects with intake tunnel 11, and radial direction through hole 20 connects with exhalant canal 12.
Piston 3 is sleeved on valve seat 2 and limits annular seal space 5, and spring is arranged in annular seal space 5, concrete,
Being provided with locating slot 22 in valve seat 2 upper surface, the diapire of piston 3 is provided with the lead 31 being downwardly extending,
Lead 31 keeps coaxial with locating slot 22, and the upper end of spring is sleeved on lead 31, and lower end is positioned at fixed
In the groove 22 of position, to prevent spring from offseting in compression or drawing process.
The sealing good in order to ensure annular seal space 5, also sets between the inwall of the outside of valve seat 2 and piston 3
Having the first sealing ring 6, concrete, valve seat 2 is provided with the groove of annular, and the first sealing ring 6 is arranged on groove
In, the inner side of the first sealing ring 6 offsets with the diapire of groove, and the outside of the first sealing ring 6 is interior with piston 3
Wall offsets.
Being additionally provided with the gap for making current pass through between the inwall of piston 3 and valve body 1, valve body 1 also includes even
Being connected on the pressing plate 8 on valve body 1 inwall, pressing plate 8 is one-body molded with valve body 1 or releasable connection, for the ease of work
Plug 3 is arranged in valve body 1, and the pressing plate 8 in this preferred embodiment is screwed on the inwall of valve body 1, at pressing plate
The bottom surface of 8 is interval with several projections 81, and the end face of piston 3 offsets with protruding 81, pressing plate 8 also sets
Having through hole 82, water flows in exhalant canal 12 after flowing through the space between adjacent protrusion 81 and through hole 82, pressure
After plate 8 installation, spring keeps certain decrement under the extruding of piston 3, namely sets certain
The value of elastic of size.
In other embodiments of the present utility model, those skilled in the art also can be spaced on the inwall of valve body
Being provided with multiple boss extended inwardly to form, piston-top surface offsets with boss bottom surface, current from adjacent lands it
Between space flow in exhalant canal, so design and can also arrive the effect similar to this preferred embodiment,
It is not described in detail in this.
In order to avoid current generation backflow phenomenon, the inwall of the valve seat 2 in this preferred embodiment and valve body 1 it
Between be additionally provided with the second sealing ring 7.
When pressure maintaining valve in this preferred embodiment is in running order, current sequentially pass through intake tunnel 11, axle
Water outlet is flowed into behind the gap between blind hole 20, radial direction through hole 21, piston 3 and valve body 1 inwall and through hole 82
In passage 12, when the pressure in intake tunnel 11 is too small, and piston 3 end face pressure experienced and its bottom surface
Pressure difference between pressure experienced more than spring set value of elastic time, piston 3 under pressure towards
The direction of intake tunnel 11 is moved, to reduce the aperture of flow channels upper water-out mouth, i.e. and the opening of radial direction through hole 21
Degree, makes the discharge flowing in exhalant canal 12 reduce, thus reduces the pressure in exhalant canal 12 and piston
3 end face pressure experienced；In the process, spring is further compressed, and the volume of annular seal space 5 subtracts further
Little, owing to being full of air in annular seal space 5, therefore the air pressure in annular seal space 5 can be gradually increased, now
Piston 3 the elastic force of spring, air pressure, upper and lower two ends pressure common effect under keep stable, with
Ensure that the pressure in exhalant canal 12 is in the range of setting.With piston in prior art spring force, on
The lower holding of common effect of lower two ends pressure experienced is stably compared, the pressure maintaining valve in this utility model have with
Lower benefit: 1, also acted on by air pressure due to piston 3, therefore air pressure can share a part
Elastic force, thus can reduce the elastic force of flexible member, and then reduce the volume of flexible member and whole pressure maintaining valve
Volume；2, being arranged in annular seal space 5 due to spring, therefore spring is not easily susceptible to the interference of current, thus
Improve sensitivity and the service life of spring；3, in spring is arranged on piston 3, spring can be reduced further
External diameter and line footpath, thus further increase the reaction sensitivity of spring, the pressure in intake tunnel 11
In the case of being continually changing, it is ensured that pressure maintaining valve is timely and effective carries out voltage stabilizing process, prevents exhalant canal 12 from pressing
The excessive damage causing end product of power；4, multiple parts are simplified, so that the structure of pressure maintaining valve is more
Add simple, reduce production cost.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model is also
It is not limited to this, is familiar with this those skilled in the art and should be understood that this utility model includes but not limited to accompanying drawing
Content described in detailed description of the invention above.Any without departing from function of the present utility model and structural principle
Amendment be intended to be included in the scope of claims.
Claims (7)
1. a pressure maintaining valve, it is characterised in that: include the valve body being provided with intake tunnel and exhalant canal, described
Be provided with valve seat, flexible member and piston in valve body, described piston bush be contained on described valve seat and limit for
Installing the annular seal space of described flexible member, described piston-top surface is resisted against on described valve body, and described valve seat sets
Having the flow channels for connecting intake tunnel and exhalant canal, described piston moves axially on described valve seat
To regulate the aperture of described flow channels upper water-out mouth.
Pressure maintaining valve the most according to claim 1, it is characterised in that: described piston inner wall and described valve seat
Between be provided with the first sealing ring.
Pressure maintaining valve the most according to claim 1, it is characterised in that: described flexible member is spring.
Pressure maintaining valve the most according to claim 3, it is characterised in that: described valve seat end face is provided with locating slot,
Described piston diapire is provided with the lead being downwardly extending, and the upper end of described spring is sleeved on described guiding
On post, the lower end of described spring is positioned at described locating slot.
5. according to the pressure maintaining valve one of Claims 1-4 Suo Shu, it is characterised in that: described valve body also includes
The pressing plate being connected on valve interior wall, described pressing plate bottom surface is interval with several projections, described piston-top surface
Offset with described projection, between described piston and described valve interior wall, be provided with gap, described pressing plate be provided with
The through hole that described gap connects with described exhalant canal.
6. according to the pressure maintaining valve one of Claims 1-4 Suo Shu, it is characterised in that: the inwall of described valve body
On be interval with multiple boss extended inwardly to form, described piston-top surface offsets with described boss bottom surface, institute
State and be provided with gap between piston and described valve interior wall.
7. according to the pressure maintaining valve one of Claims 1-4 Suo Shu, it is characterised in that: described valve seat is with described
The second sealing ring it is provided with between valve interior wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620398383.7U CN205715869U (en) | 2016-05-03 | 2016-05-03 | A kind of pressure maintaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620398383.7U CN205715869U (en) | 2016-05-03 | 2016-05-03 | A kind of pressure maintaining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715869U true CN205715869U (en) | 2016-11-23 |
Family
ID=57303028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620398383.7U Active CN205715869U (en) | 2016-05-03 | 2016-05-03 | A kind of pressure maintaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715869U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589832A (en) * | 2018-06-27 | 2018-09-28 | 日丰企业（佛山）有限公司 | Pressure limiting valve applied to water supply pipe |
| CN108612904A (en) * | 2018-07-18 | 2018-10-02 | 天津市国威给排水设备制造有限公司 | Combined type air inlet and exhaust valve |
| EP3845993A1 (en) | 2019-12-31 | 2021-07-07 | Xiamen Solex High-Tech Industries Co., Ltd. | Pressure reducing valve and pull-out faucet |
-
2016
- 2016-05-03 CN CN201620398383.7U patent/CN205715869U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589832A (en) * | 2018-06-27 | 2018-09-28 | 日丰企业（佛山）有限公司 | Pressure limiting valve applied to water supply pipe |
| CN108612904A (en) * | 2018-07-18 | 2018-10-02 | 天津市国威给排水设备制造有限公司 | Combined type air inlet and exhaust valve |
| CN108612904B (en) * | 2018-07-18 | 2024-01-26 | 天津市国威给排水设备制造有限公司 | Combined air inlet and outlet valve |
| EP3845993A1 (en) | 2019-12-31 | 2021-07-07 | Xiamen Solex High-Tech Industries Co., Ltd. | Pressure reducing valve and pull-out faucet |
| US11680653B2 (en) | 2019-12-31 | 2023-06-20 | Xiamen Solex High-Tech Industries Co., Ltd. | Pressure reducing valve and pull-out faucet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Huayi Precision Machinery Co.,Ltd. Address before: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG HUAYI PRECISION MACHINERY Co.,Ltd. |