CN208595270U - A kind of pressure reducing valve - Google Patents
A kind of pressure reducing valve Download PDFInfo
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- CN208595270U CN208595270U CN201821344402.3U CN201821344402U CN208595270U CN 208595270 U CN208595270 U CN 208595270U CN 201821344402 U CN201821344402 U CN 201821344402U CN 208595270 U CN208595270 U CN 208595270U
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- relief hole
- valve
- valve rod
- pressure reducing
- valve body
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Abstract
The utility model provides a kind of pressure reducing valve, belongs to valve technology field.It solves the problems, such as that existing pressure reducing valve maintenance is inconvenient.This pressure reducing valve, be provided on valve rod horizontal relief hole one, with one vertical distribution of relief hole and the relief hole two that is connected with the relief hole one, one end of relief hole one is connected with the exhalant canal, the other end of relief hole two is connected with the intake tunnel, the plug that relief hole one and relief hole two can be blocked is provided in relief hole one, the bottom of plug has can make plug move axially the resilient abutment structure for causing relief hole one to be connected to relief hole two in relief hole one under the promotion that medium is pressurized.The structure design of the utility model is reasonable, not will cause pressure reducing valve and scraps, and makes maintenance timely.
Description
Technical field
The utility model belongs to valve technology field, is related to a kind of pressure reducing valve.
Background technique
Pressure reducing valve is a kind of automatic special arrangement for reducing working pressure of pipeline, effect be after given pressure relief ranges, can
The medium of elevated pressures is reduced to given pressure.After it can be reduced the higher fluid pressure of preceding pipeline to valve needed for pipeline
It is horizontal.Here transmission medium is mainly water.Pressure reducing valve is widely used in the excessively high area of skyscraper, city water-supply pipe network hydraulic pressure
Domain, mine and other occasions, to guarantee respectively to obtain service hydraulic pressure and flow appropriate with water spot in water supply system.In view of the leakage of water
Mistake rate and waste degree it is almost directly proportional with the water pressure of water supply system, therefore pressure reducing valve have improve system conditions and
Potential water saving effect, its water-saving result is about 30% according to statistics.
Such as Chinese patent Patent No.: a kind of structure improved pressure reducing valve as described in " 200820084515.4 ", it is specific
Structure includes the valve body with inlet and outlet, and valve core case is equipped in valve body, is provided with core assembly, valve in valve core case
The water passage that flux can be changed when core assembly moves in valve core case is equipped between core assembly and valve core case, on valve body
It is provided with the pressure modulating opening being located above valve core case, the regulation component acted on core assembly, core assembly are provided in pressure modulating opening
Equipped with resistance spring, it is equipped between core assembly and pressure modulating opening and covers the sealing ring one on core assembly.But due to the decompression
Only sealing ring is arranged in valve between core assembly and pressure modulating opening, and sealing ring is arranged not between core assembly and valve core case, from
And water flow is caused such as to enter into pressure modulating opening, influence the normal work of pressure reducing valve.When additionally mounted, if by inlet and outlet
After reversed installation, the hypertonia in pressure reducing valve, it may appear that pressure can not be surveyed, even if the medium after disassembly in pressure reducing valve still can not be very
It empties well, spool and valve body can not survey pressure again and use, this pressure reducing valve is caused to scrap substantially all in locking states.
Summary of the invention
The purpose of this utility model is that it is simple, close to provide a kind of structure for the above-mentioned problems in the prior art
Sealing property is good, convenient to install and maintain, effect of easing stress is good, encounter upstream line leakage, fracture when or accidentally fill after can by medium from
The pressure reducing valve being discharged in valve rod.
The purpose of this utility model can be realized by the following technical scheme: a kind of pressure reducing valve, including with intake tunnel,
The valve body of exhalant canal, valve rod, spool are provided in the valve body, and the spool is in the intake tunnel, water outlet
Both between channel and to make the intake tunnel, exhalant canal through-flow or shuts off, the lower end of the valve rod and described
Spool is fixedly connected with, and the adjustment structure and the valve rod for being adjustable valve rod axial compressive force are equipped between the upper end and valve body of the valve rod
It can be moved up and down along spool under the action of above-mentioned adjustment structure, the bottom of the spool, which is additionally provided with, has spool upwards
The buffer spring of movement tendency also has sealing device, which is characterized in that on the valve rod between the valve rod and valve body
Be provided with horizontal relief hole one, with one vertical distribution of relief hole and the relief hole that is connected with the relief hole one
Two, one end of the relief hole one is connected with the exhalant canal, the other end of the relief hole two and described
Intake tunnel is connected, and the plug that can block relief hole one and relief hole two is provided in the relief hole one, described
The bottom of plug has and under the promotion that medium be pressurized plug can move axially cause relief hole one and to let out in relief hole one
The resilient abutment structure for pressing hole two to be connected to.
When work, water is to be flowed into valve body to flow out from exhalant canal again by intake tunnel.Pressure reducing valve passes through adjustment structure
Incude the pressure of exhalant canal, and control the up and down motion of valve rod, changes water flux density, to maintain exhalant canal pressure constant.
When exhalant canal pressure is larger, water flow will press spool upwards, along with spool bottom has buffer spring, so that spool
It moves upwards, water flow reduces, and exhalant canal pressure becomes smaller；Conversely, spool is by downward when exhalant canal pressure is smaller
Pressure is greater than water flow to the sum of the pressure of spool and the elastic force of buffer spring, moves down spool, and water flow increases, and water outlet is logical
Road pressure increases；When encountering upstream line leakage, fracture or after missing dress, exhalant canal pressure arrives greatly certain value, the water flow meeting
Plug is opened, flow to water flow can from valve rod in intake tunnel, pressure reducing valve is not will cause and scraps, and after water flow discharge, out
Aquaporin pressure change, the problem of facilitating staff to find upstream line in time, are convenient for on-call maintenance.
In above-mentioned pressure reducing valve, the resilient abutment structure includes four elasticity being distributed in relief hole one
It encloses, is provided with partition between two adjacent elastic rings.The purpose being arranged in this way is the deformation quantity for guaranteeing elastic ring, the elastic ring
It is the production of solid rubber material.
In above-mentioned pressure reducing valve, the plug is cylindrical, and one end of the plug is resisted against the elasticity
On circle, the other end of the plug has the reserve tank of indent, and the cross section of the reserve tank is arc shape.The mesh being arranged in this way
Be to influence pressurization of the plug in exhalant canal by water flow, water flow converges in reserve tank, plug can be made to elastic ring
Direction presses closer.
In above-mentioned pressure reducing valve, the sealing device, which includes that the medium position of valve rod is horizontally disposed, separator disc, institute
The separator disc stated is in the valve body and valve body is divided into upper chamber, lower chambers, sets in the annular wall of the separator disc
It is equipped with seal groove, sealing ring one and one resilient abutment of sealing ring are embedded in the seal groove on the valve interior wall
And it is formed and is sealed with valve interior wall.The purpose being arranged in this way is to seal upper chamber and lower chambers to separate.
In above-mentioned pressure reducing valve, also it is vertically arranged in the valve body and is connected to respectively with exhalant canal, intake tunnel
Flow-guiding channel, the valve rod is threaded through in the flow-guiding channel and is also cased on the valve rod strainer, the valve rod and
The sealing ring two that valve rod valve rod during sliding up and down can be made to keep sealing with flow-guiding channel always is equipped between flow-guiding channel.
The flow-guiding channel is in bottom chamber, and setting sealing ring two guarantees the validity of valve rod and flow-guiding channel sealing, causes upper chamber
It is more preferable with lower chambers sealing effect, water flow will not be made to leak outside.
In above-mentioned pressure reducing valve, the adjustment structure includes that valve deck is fixed on valve body, screw thread on the valve deck
It is connected with screw press, the screw press and the valve rod are axially spaced apart and are provided with pressure regulation bullet between the rwo
Spring, one end of the pressure spring are resisted against on the screw press by upper spring seat, the pressure spring it is another
One end is resisted against on the separator disc.The upper end of screw press is stretched out outside valve deck, and the purpose being arranged in this way is to facilitate adjusting pair
The adjusting of adjusting screw rod, it is easy to use.
In above-mentioned pressure reducing valve, it is additionally provided with detection mouth on the valve body, nut, institute are fixed in the detection mouth
Gasket is provided between the nut stated and detection mouth.It can connect pressure gauge in detection mouth, which is used to show valve
The pressure value of the exhalant canal of body.
Compared with prior art, sealing ring one, sealing ring two is arranged in this pressure reducing valve, effectively can prevent water from entering epicoele
Interior influences the normal work of pressure reducing valve；The utility model structure is simple, sealing effect is good, long service life, and structure design is closed
Reason, not will cause pressure reducing valve and scraps, and make maintenance timely, and in addition spring is easy to adjust, increases the applicable model of pressure reducing valve
It encloses.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of this pressure reducing valve.
Fig. 2 is the enlarged structure schematic diagram in Fig. 1 at circle A.
In figure, 1, intake tunnel；2, exhalant canal；3, valve body；4, valve rod；5, spool；6, buffer spring；7, relief hole
Two；8, plug；9, elastic ring；10, partition；11, separator disc；12, sealing ring one；13, strainer；14, sealing ring two；15, valve deck；
16, screw press；17, pressure spring；18, upper spring seat；19, nut；20, gasket.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As depicted in figs. 1 and 2, this pressure reducing valve is mainly made of the valve body 3 with intake tunnel 1, exhalant canal 2, valve body 3
It is inside provided with valve rod 4, spool 5, spool 5 is between intake tunnel 1, exhalant canal 2 and can make intake tunnel 1, exhalant canal 2
The two is through-flow or shuts off, in actually manufacture, the specific structure of the valve rod 4 are as follows: the medium position of valve rod 4 is horizontally disposed separation
Disk 11, separator disc 11 are in valve body 3 and divide valve body 3 for upper chamber, lower chambers；Be vertically arranged in valve body 3 respectively and go out
The flow-guiding channel that aquaporin 2, intake tunnel 1 are connected to, valve rod 4 are threaded through in flow-guiding channel and are also cased with strainer 13 on the valve rod 4.
The lower end of valve rod 4 is fixedly connected with spool 5, is equipped between the upper end and valve body 3 of valve rod 4 and is adjustable the axial pressure of valve rod 4
The adjustment structure of the power and valve rod 4 can move up and down under the action of adjustment structure along spool 5；Between valve rod 4 and flow-guiding channel
Equipped with the sealing ring 2 14 that the valve rod 4 during sliding up and down of valve rod 4 can be made to keep sealing with flow-guiding channel always.
In actually manufacture, the specific embodiment of the adjustment structure are as follows: including being fixed with valve deck 15, valve deck on valve body 3
Screw press 16 is threaded on 15, screw press 16 and 4 axially spaced-apart of valve rod are distributed and are provided with pressure regulation between the rwo
Spring 17, one end of pressure spring 17 are resisted against on the screw press 16 by upper spring seat 18, pressure spring 17 it is another
One end is resisted against on the separator disc 11.
The bottom of spool 5 is additionally provided with the buffer spring 6 for making spool 5 have the trend that moves upwards, the valve rod 4 and valve body
Also there is sealing device between 3, in actually manufacture, the specific embodiment of the sealing device are as follows: mainly by 11 groups of separator disc
At being provided with seal groove in the annular wall of demarcation plate 10, sealing ring 1 and one 12 elasticity of the sealing ring be embedded in seal groove
It is resisted against on 3 inner wall of valve body and is formed with 3 inner wall of valve body and sealed.
Be provided on valve rod 4 horizontal relief hole one, with one vertical distribution of relief hole and with the relief hole one
The relief hole 27 being connected, one end of relief hole one are connected with the exhalant canal 2, the other end of relief hole 27 and institute
The intake tunnel 1 stated is connected, and the plug 8 that can block relief hole one and relief hole 27, plug 8 are provided in relief hole one
Bottom have and under the promotion that medium is pressurized plug 8 can move axially cause relief hole one and relief hole in relief hole one
The resilient abutment structure of 27 connections.
In actually manufacture, the specific embodiment of the resilient abutment structure are as follows: be mainly distributed in pressure release by four
The elastic ring 9 of Kong Yizhong forms, and is provided with partition 10 between two adjacent elastic rings 9.
In order to influence pressurization of the plug 8 in exhalant canal 2 by water flow, plug 8 moves axially sensitive；Actually setting
Timing, the plug 8 is cylindrical, and one end of plug 8 is resisted against on the elastic ring 9, and the other end of plug 8 has indent
Reserve tank, the cross section of the reserve tank are arc shape.
In order to detect the pressure value of the water in exhalant canal 2；It is additionally provided with detection mouth on valve body 3, is fixed with spiral shell in detection mouth
Cap 19 is provided with gasket 20 between nut 19 and detection mouth.It can connect pressure gauge in detection mouth, which is used to show
Show the pressure value of the exhalant canal 2 of valve body 3；
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.Herein
Described in specific embodiment be only the spirit of the present invention is given an example.The utility model technical field
Technical staff can make various modifications or additions to the described embodiments or be substituted in a similar manner, but
Without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (7)
1. a kind of pressure reducing valve is arranged in the valve body (3) including the valve body (3) with intake tunnel (1), exhalant canal (2)
There are valve rod (4), spool (5), the spool (5) is between the intake tunnel (1), exhalant canal (2) and can make institute
Both the intake tunnel (1) stated, exhalant canal (2) are through-flow or shut off, the lower end of the valve rod (4) and the spool (5)
Be fixedly connected with, between the upper end and valve body (3) of the valve rod (4) be equipped be adjustable valve rod (4) axial compressive force adjustment structure and
The valve rod (4) can move up and down under the action of above-mentioned adjustment structure along spool (5), and the bottom of the spool (5) is also set
There is the buffer spring (6) for making spool (5) that there is the trend that moves upwards, also there is sealing between the valve rod (4) and valve body (3)
Device, which is characterized in that horizontal relief hole one and one vertical distribution of relief hole are provided on the valve rod (4) simultaneously
The relief hole two (7) being connected with the relief hole one, one end of the relief hole one and described exhalant canal (2) phase
Connection, the other end of the relief hole two (7) are connected with the intake tunnel (1), are arranged in the relief hole one
There is a plug (8) that relief hole one and relief hole two (7) can be blocked, the bottom of the plug (8) has to be pressurized in medium
Plug (8) can be made to move axially the resilient abutment for causing relief hole one to be connected to relief hole two (7) in relief hole one under pushing
Structure.
2. a kind of pressure reducing valve according to claim 1, which is characterized in that the resilient abutment structure includes four intervals
The elastic ring (9) being distributed in relief hole one is provided with partition (10) between two adjacent elastic rings (9).
3. a kind of pressure reducing valve according to claim 2, which is characterized in that the plug (8) is cylindrical, and described is stifled
One end of head (8) is resisted against on the elastic ring (9), and the other end of the plug (8) has the reserve tank of indent, the storage
The cross section for depositing slot is arc shape.
4. a kind of pressure reducing valve according to claim 3, which is characterized in that the sealing device includes in valve rod (4)
Portion position is horizontally disposed to be had separator disc (11), and the separator disc (11) is in the valve body (3) and is divided into valve body (3)
Upper chamber, lower chambers are provided with seal groove in the annular wall of the separator disc (11), sealing are embedded in the seal groove
It encloses one (12) and sealing ring one (12) resilient abutment forms sealing on described valve body (3) inner wall and with valve body (3) inner wall.
5. a kind of pressure reducing valve according to claim 4, which is characterized in that be also vertically arranged in the valve body (3) point
The flow-guiding channel not being connected to exhalant canal (2), intake tunnel (1), the valve rod (4) are threaded through in the flow-guiding channel
And be also cased with strainer (13) on the valve rod (4), being equipped between the valve rod (4) and flow-guiding channel can make valve rod (4) upper and lower
Valve rod (4) keeps the sealing ring two (14) of sealing with flow-guiding channel always in sliding process.
6. a kind of pressure reducing valve according to claim 5, which is characterized in that the adjustment structure includes solid on valve body (3)
It is connected with valve deck (15), is threaded on the valve deck (15) screw press (16), the screw press (16) and described
Valve rod (4) axially spaced-apart distribution and the rwo between be provided with pressure spring (17), one end of the pressure spring (17)
It is resisted against by upper spring seat (18) on the screw press (16), the other end of the pressure spring (17) is resisted against institute
On the separator disc (11) stated.
7. a kind of pressure reducing valve according to claim 1 or 5, which is characterized in that be additionally provided with detection on the valve body (3)
Mouthful, it is fixed with nut (19) in the detection mouth, gasket (20) is provided between the nut (19) and detection mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821344402.3U CN208595270U (en) | 2018-08-21 | 2018-08-21 | A kind of pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821344402.3U CN208595270U (en) | 2018-08-21 | 2018-08-21 | A kind of pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208595270U true CN208595270U (en) | 2019-03-12 |
Family
ID=65605141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821344402.3U Active CN208595270U (en) | 2018-08-21 | 2018-08-21 | A kind of pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208595270U (en) |
-
2018
- 2018-08-21 CN CN201821344402.3U patent/CN208595270U/en active Active
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