CN207514241U - A kind of axial-flow type water control relief valve - Google Patents
A kind of axial-flow type water control relief valve Download PDFInfo
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- CN207514241U CN207514241U CN201721420700.1U CN201721420700U CN207514241U CN 207514241 U CN207514241 U CN 207514241U CN 201721420700 U CN201721420700 U CN 201721420700U CN 207514241 U CN207514241 U CN 207514241U
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Abstract
The utility model provides a kind of axial-flow type water control relief valve, including valve body, it is arranged on the inlet and outlet at valve body both ends, mounted on the first valve seat of water outlet, it is arranged on the pilot valve body of valve inner, it is arranged on the pilot valve for leading valve inner, piston ring on pilot valve body and in piston ring and with the piston of the first valve base sealing cooperation, the piston and rings form piston cavity, connecting pipe and water inlet needle-valve are installed on the piston ring, pilot valve body is divided into pressure release epicoele and pressure release cavity of resorption by the pilot valve, the water inlet is connected with piston cavity by needle-valve of intaking, the water outlet is connected with pressure release epicoele by connecting pipe, when pilot valve is closed, pressure release cavity of resorption is connected with piston cavity；When pilot valve is opened, pressure release epicoele is connected with piston cavity, and the utility model can promote the control accuracy of piston keying and weaken cavitation erosion and vibration that the parts in valve body are subject to.
Description
Technical field
The utility model is related to valve field more particularly to a kind of axial-flow type water control relief valves.
Background technology
Hydraulic control valve is the valve that opened and closed, adjusts using pipe medium pressure as power.Current hydraulic control valve
It is made of a main valve and the pilot valve set up etc..Pilot valve is acted with the variation of the liquid level and pressure of medium, due to pilot valve type
Very much, can be used alone or several be applied in combination, so that it may so that main valve obtain it is independent to the carry out such as water level and hydraulic pressure and flow
With the function of compound adjusting.
Hydraulic control valve is divided into two class of diaphragm type and piston-type, and operation principle is identical, is all that more than downstream pressure difference is
Power is controlled by pilot valve, makes diaphragm（Piston）Fluid pressure type differential operation, is adjusted completely by hydraulic automatism, so as to make main valve flap complete
Full open completely closes or in adjustment state.
Existing hydraulic control valve is complicated, volume is big, can cause to increase using space in this way, be unfavorable for minimizing.
Since the combination for setting up pilot valve controls, the control stroke that can lead to main valve is elongated, and then controls not direct, not sensitive enough.At present
The greatest problem of hydraulic control valve is that cavitation can occur for the long term device use in valve.So-called cavitation erosion refers to that fluid is throttling
Under effect, throttling device rear end causes liquid to vaporize because pressure drastically declines, and annihilation process then occurs in steam bubble again
In, the phenomenon that intense impact is caused to device microcosmic surface, and then generates noise, vibration, corrosion.Therefore current hydraulic control valve
Service life it is short, it is of high cost.
In consideration of it, it is necessary to design a kind of axial-flow type water control relief valve to solve the above problems.
Utility model content
The technical problems to be solved in the utility model is：Control accuracy can be promoted and control cavitation erosion and shake by providing one kind
Dynamic axial-flow type water control relief valve.
In order to achieve the above objectives, the utility model provides following technical solution：A kind of axial-flow type water control relief valve, including
Valve body, the inlet and outlet for being arranged on valve body both ends, the first valve seat mounted on water outlet, the work mounted on valve inner
Plug ring and the piston coordinated in piston ring and with the first valve base sealing, the piston and rings are formed in piston
Chamber, the axial-flow type water control relief valve, which further includes the pilot valve body for being arranged on valve inner and is arranged on, leads leading for valve inner
Valve, the piston ring are mounted on pilot valve body, and connecting pipe and water inlet needle-valve, the pilot valve will be equipped on the piston ring to lead
Valve body is divided into pressure release epicoele and pressure release cavity of resorption, and the water inlet is connected with piston cavity by needle-valve of intaking, the water outlet with
Pressure release epicoele is connected by connecting pipe, and when pilot valve is closed, pressure release cavity of resorption is connected with piston cavity；When pilot valve is opened, pressure release
Epicoele is connected with piston cavity.
Further, the pilot valve body is equipped with the installation passage of installation pilot valve, and the pilot valve includes being sequentially arranged at installation
The second valve seat, seal receptacle and the connecting tube of connection valve body and pilot valve body in channel, the pilot valve further include and the second valve seat
It the guide valve core that cooperation is sealed with seal receptacle, the elastomeric element being pressed on above guide valve core and is pressed on above elastomeric element
Adjusting rod.
Further, the installation passage close to the side of piston ring be equipped with the first intercommunicating pore for being connected with connecting pipe and
The second intercommunicating pore connected with piston cavity, second valve seat are mounted between the first intercommunicating pore and the second intercommunicating pore；When leading
When spool and the second valve base sealing coordinate, the first intercommunicating pore connection pressure release epicoele and connecting pipe, second intercommunicating pore connect
It removes heat by catharsis pressure chamber and piston cavity；When guide valve core is detached with the second valve seat, first intercommunicating pore is formed with the second intercommunicating pore
One circuit.
Further, the guide valve core is located at the top of the second valve seat, and the guide valve core lower end is equipped with and the second valve seat
It seals the first sealing ring of cooperation and fixes the fixation kit of the first sealing ring, first sealing ring is including fixed part and certainly
The contact site that fixed part extends to form, the cross section triangle at a right angle or obtuse triangle of the contact site.
Further, the pilot valve body is integrally formed with valve body and into hemispherical, if the piston ring is close by bolt stem
Sealing is scheduled on pilot valve body.
Further, described piston ring one end is equipped with the installation opening for piston installation, and the installation opening is resisted against the first valve
On seat；The other end of the piston ring is equipped with mounting hole, and the connecting pipe is inserted into piston ring from mounting hole and prolongs across piston
Reach water outlet；The side wall of the piston ring is equipped with several keying mouths, and the keying mouth is close to the installation opening.
Further, the piston be equipped with the annular surface coordinated with the first valve base sealing, the groove opposite with annular surface with
And the perforation through piston, the groove form the piston cavity with piston ring, the connecting pipe passes through the perforation.
Further, gland is installed on first valve seat and is set on the outside of gland and limits the movement of the first valve seat
Retainer ring, first valve seat and gland form seal groove, is equipped in the seal groove and the second sealing of piston seal cooperation
Circle, there are gaps between the seal groove and the second sealing ring.
Further, the tapered portion that the water inlet needle-valve includes adjustment portion and self-regulation portion extends to form, the adjustment portion
On valve body and valve body is pierced by, the tapered portion installation is on the piston ring and in insertion piston ring.
Further, it is arranged with the spring in piston cavity on the connecting pipe.
Compared with prior art, the utility model has at least the following advantages：
1. the piston structure of axial-flow type, medium fluidised form is good, and medium active force will not be acted directly on piston, therefore is letting out
The generation for the problems such as cavitation, vibrations are avoided during pressure；
2. Differential Control structure in the form of piston so that the keying stroke of piston is more accurate, will not again pressure oscillation when
Jumping phenomena is generated, and the aperture for the needle-valve that can intake by adjusting, control the pressure regulation time of relief valve；
3. built in control system whole, no piping is without external pilot valve, and trouble point is less, compact-sized, and installation space is small, system
It causes that this is lower, is built in the problems such as control system in valve body center does not have to worry icing, bursting by freezing forever.
Description of the drawings
Fig. 1 is the structure diagram of the axial-flow type water control relief valve of the utility model.
Fig. 2 is the partial enlarged view of part A in axial-flow type water control relief valve shown in FIG. 1.
Fig. 3 is the partial enlarged view of part B in axial-flow type water control relief valve shown in FIG. 1.
Specific embodiment
The structure and utility model content of the axial-flow type water control relief valve of the utility model are described with reference to Fig. 1 to 3.
A kind of axial-flow type water control relief valve including valve body 1, is arranged on the water inlet 2 at 1 both ends of valve body and water outlet 3, installation
The first valve seat 4 in water outlet 3 is arranged on 1 inside of valve body and the pilot valve body 5 close to water inlet, leading in pilot valve body 5
Valve 50, the piston ring 6 on pilot valve body 5 and the piston 7 coordinated in piston ring 6 and with the sealing of the first valve seat 4.
First valve seat 4 is sealingly mounted on the water outlet 3 of valve body 1.Be equipped on first valve seat 4 gland 41 with
And it is set in 41 outside of gland and limits the retainer ring 42 of the first valve seat 4 movement.If the gland 41 is fixed on by bolt stem
On one valve seat 4.The inside of the water outlet 3 is recessed with the card slot of annular.42 part of retainer ring is located in the card slot.It is described
The part of 42 protruding card slot of retainer ring limits the movement of 4 side of the first valve seat.The opposite side of first valve seat 4 is by piston ring 6
Limitation movement.First valve seat 4 combines to form seal groove 43 with gland 41.It is equipped in the seal groove 43 close with piston 7
Envelope the second sealing ring 44 of cooperation.There are gaps between 43 and second sealing ring 44 of seal groove to form self sealing structure, improves
Sealing performance.
The pilot valve body 5 is integrally formed with valve body 1, between the two equipped with several supporting ribs（It is not shown）.It is described to lead
Valve body 5 is into hemispherical and is positioned close at water inlet 2.The pilot valve body includes vertical plane and arc surface.The pilot valve body 5
For arc surface against water inlet 2, such pilot valve body 5 is not only small, but also can also reduce water damage.Inside the pilot valve body 5
Installation passage equipped with installation pilot valve 50.Pilot valve body 5 is divided into pressure release epicoele 51 and pressure release cavity of resorption 52 by the pilot valve 50.The peace
Channel is filled close to the side of piston ring（I.e. on vertical plane）If there are two the first intercommunicating pore 53 being arranged in parallel and the second connections
Hole 54.
The pilot valve 50 includes the second valve seat 500 being sealingly mounted at successively in installation passage, seal receptacle 501 and connection
The connecting tube 502 of valve body 1 and pilot valve body 5.Second valve seat 500, seal receptacle 501 and connecting tube 502 are abutted and are connected into
One.The pilot valve 50, which is further included, to be sealed the guide valve core 503 of cooperation with the second valve seat 500 and seal receptacle 501, is pressed on pilot valve
The elastomeric element 504 of 503 top of core and the adjusting rod 505 for being pressed on 504 top of elastomeric element.
Second valve seat 500 is circlewise and equipped with the pressure relief opening being pierced by for guide valve core 503.Second valve seat 500 is pacified
Between the first intercommunicating pore 53 and the second intercommunicating pore 54.The step close to the second intercommunicating pore 54 is convexly equipped with inside installation passage
Portion.Second valve seat 500 is mounted in the stage portion.The seal receptacle 501 divides for upper seal support 5010 and bottom sealing socket
5011.The upper seal support 5010 is into cylindric；The cross section of the bottom sealing socket 5011 is into inverted L-shaped.The connecting tube
502 one end are inserted into installation passage；The other end passes through to be connected outside valve body 1 and valve body 1.Valve deck is installed in the connecting tube 502
506.The valve deck 506 is bolted on valve body 1.
The guide valve core 503 is located at the top of the second valve seat 500.The guide valve core 503 includes close with upper seal support 5010
Second for sealing the first sealing 5030 of cooperation and extending from the first sealing 5030 and coordinating with the sealing of bottom sealing socket 5011
Sealing 5031.First sealing, 5030 and second sealing 5031 successively decreases successively for cylinder and diameter.Described second
The lower end of sealing 5031 is additionally provided with the first sealing ring 5032 coordinated with the sealing of the second valve seat 500 and fixes the first sealing ring
5032 fixation kit.The fixation kit includes the top cover labyrinth 5033 and lower sealing cover of the first sealing ring 5032 of clamping
5034.The top cover labyrinth 5033, the first sealing ring 5032 and lower sealing cover 5034 pass sequentially through screw and are fixed on the second sealing
5031 lower section of portion.It can change fixation kit to the extruding force of the first sealing ring 5032 by adjusting screw and then increase by first close
The ductility of seal 5032 can overcome the problems, such as the first sealing ring 5032 because abrasion causes sealing performance to reduce in this way.It is described
The contact site 5036 that first sealing ring 5032 includes fixed part 5035 and self-fixed department 5035 extends to form.The contact site 5036
Cross section triangle at a right angle or obtuse triangle, the sealing performance of the first sealing ring 5032 can be increased in this way.Described
Two sealings 5031, the first sealing ring 5032 and fixation kit are located in pressure release epicoele 51.The pressure release epicoele 51 is close under
Second sealing 5031 of envelope seat 5011, the second valve seat 500 and guide valve core 503 surrounds.Second sealing 5031 and pressure release
Epicoele 51 forms an annular chamber.The pressure release cavity of resorption 52 is for remaining sky of the lower section of boundary in pilot valve body 5 with the second valve seat 500
Between.
The elastomeric element 504 uses spring, and one end is pressed on 5030 top of the first sealing of guide valve core 503.It is described
It is equipped between the other end of elastomeric element 504 and the adjusting rod 505 and compresses plate 507.
Described 505 one end of adjusting rod, which is pressed on, to be compressed on plate 507；The other end is pierced by valve deck 506 and is equipped with adjusting nut.
The adjusting nut can adjust the length that adjusting rod 505 is stretched into connecting tube 502, and then change the compression of elastomeric element 504
Amount.
The piston ring 6 is fixed on by several bolt seals on the vertical plane of pilot valve body 5.The piston ring 6 is into cylinder
Shape.One end of the piston ring 6 is equipped with the installation opening 60 installed for piston 7.The installation opening 60 is resisted against on the first valve seat 4.
The other end of the piston ring 6 be equipped with the mounting hole 61 that is connected with the first intercommunicating pore 53 of pilot valve body 5 and with the second intercommunicating pore
The connecting hole 62 of 54 connections.The side wall of the piston ring 6 is equipped with several keying mouths 63.The keying mouth 63 is close to the assembling
Mouth 60.Connecting pipe 64 and water inlet needle-valve 65 are installed on the piston ring 6.The connecting pipe 64 is inserted into piston from mounting hole 61
It is extended at water outlet 3 in ring 6 and across piston 7.First intercommunicating pore 53 connects pressure release epicoele 51 and connecting pipe 64, that is, goes out
The mouth of a river 3 is connected with pressure release epicoele 51 by connecting pipe 64.The water inlet needle-valve 65 includes adjustment portion 651 and self-regulation portion 651 prolongs
Stretch the tapered portion 652 to be formed.The adjustment portion 651 is mounted on valve body 1 and is pierced by valve body 1.It is also installed in the adjustment portion 651
There is adjusting nut.It is also the inflow that water inlet needle-valve 65 is adjusted by adjusting nut.The tapered portion 652 is mounted on piston ring 6
In upper and insertion piston ring 6.
For the piston 7 into cylinder, one end is equipped with the annular surface 70 with the sealing cooperation of the first valve seat 4.The annular surface
70 can be formed by one end rounded corner or chamfering in piston 7.The utility model is by setting one in one end of piston 7
What the step of annular was formed.The other end of the piston 7 is equipped with groove 71.The other end of the piston 7 is lived with the composition of piston ring 6
Fill in inner cavity 72.I.e. described groove 71 forms the piston cavity 72 with piston ring 6.The water inlet 2 passes through with piston cavity 72
Water inlet needle-valve 65 connects.The pressure release cavity of resorption 52 is connected with piston cavity 72 by the second intercommunicating pore 54 with connecting hole 62.It is described
Piston 7 is additionally provided with the perforation 73 axially penetrated through along piston 7.The connecting pipe 64 passes through the perforation 73.The connecting pipe 64
On be arranged with the spring 74 in piston cavity 72.The mounting hole 61 of the piston ring 6 inwardly protrudes out to form the first spring base
66.Described 74 one end of spring is located in first spring base 66.The groove 71 of the piston 7 continues to be recessed with second spring seat
75.The other end of the spring 74 is located in second spring seat 75.The spring 74 can ensure 3 nothing of water inlet 2 and water outlet
During pressure, 7 and first valve seat 4 of piston sealing cooperation, valve is closed.
When pilot valve is closed, pressure release cavity of resorption 52 connects the utility model with piston cavity 72；When pilot valve is opened, in pressure release
Chamber 51 is connected with piston cavity 72.
The operation principle of the utility model is as follows：
Medium flow direction as shown in Figure 1, the region of upstream pressure P1 and downstream pressure P2 between 7 and first valve seat 4 of piston
Place is as boundary, and upstream pressure P1 slowly enters piston cavity 72 by needle-valve 65 of intaking, and downstream pressure P2 then passes through pilot
Pipe 64 enters the first intercommunicating pore 53 and pressure release epicoele 51.Whether guide valve core 503 is opened, and condition is the upstream pressure of guide valve core lower end
Whether power P1 open-top can be conditioned the guide valve core 503 that spring is pushed down.If upstream pressure P1 is reduced, the thrust of generation is less than spring
Power, then 503 downlink of guide valve core, pressure relief opening are closed, and piston cavity 72 is only by needle-valve 65 and the upstream communication of intaking at this time, then piston
72 pressure rise of inner cavity, piston 7 perform closing motion；When system upstream superpressure, P1 raisings, the upwards thrust that P1 is generated is more than
Spring force, then guide valve core 503 open, at this time piston cavity 72 connect downstream pressure P2, due to pressure relief opening much larger than water inlet needle-valve
65 bore, therefore 72 pressure of piston cavity starts to reduce, piston performs breakdown action（Because of the effect of the annular surface 70 of piston 7
Pressure is P1, and when 72 pressure of piston cavity is P2, piston stress is to the right, i.e., piston 7 performs valve opening action at this time）, because
Pressure release open area is larger, therefore valve opening speed is quickly, and when upstream pressure value back to normal, when P1 is reduced, pressure relief opening is closed,
Upstream pressure P1 slowly enters piston cavity 72 from water inlet needle-valve 65, then 7 slowly closing of piston, avoids quick closedown piston 7 from producing
Raw secondary water hammer.
In conclusion the above is only the preferred embodiments of the present utility model only, should not the utility model be limited with this
Range.I.e. every simple equivalent changes and modifications made according to the utility model claims book and description all should
Still belong in the range of the utility model patent covers.
Claims (10)
1. a kind of axial-flow type water control relief valve, including valve body, the inlet and outlet that are arranged on valve body both ends, mounted on water outlet
First valve seat of mouth, the work coordinated mounted on the piston ring of valve inner and in piston ring and with the first valve base sealing
Plug, the piston and rings form piston cavity, it is characterised in that：The axial-flow type water control relief valve, which further includes, is arranged on valve
The pilot valve body in internal portion and the pilot valve for leading valve inner is arranged on, the piston ring is mounted on pilot valve body, the piston ring
On connecting pipe and water inlet needle-valve are installed, pilot valve body is divided into pressure release epicoele and pressure release cavity of resorption, the water inlet by the pilot valve
It is connected with piston cavity by needle-valve of intaking, the water outlet is connected with pressure release epicoele by connecting pipe, when pilot valve is closed, is let out
Pressure chamber is connected with piston cavity；When pilot valve is opened, pressure release epicoele is connected with piston cavity.
2. axial-flow type water control relief valve as described in claim 1, it is characterised in that：The pilot valve body is equipped with the peace of installation pilot valve
Channel is filled, the pilot valve includes the second valve seat being sequentially arranged in installation passage, seal receptacle and connection valve body and pilot valve body
Connecting tube, the pilot valve, which is further included, to be sealed the guide valve core of cooperation with the second valve seat and seal receptacle, is pressed on above guide valve core
Elastomeric element and the adjusting rod that is pressed on above elastomeric element.
3. axial-flow type water control relief valve as claimed in claim 2, it is characterised in that：The installation passage is close to the one of piston ring
Side is equipped with the first intercommunicating pore connected with connecting pipe and the second intercommunicating pore connected with piston cavity, the second valve seat installation
Between the first intercommunicating pore and the second intercommunicating pore；When guide valve core and the second valve base sealing coordinate, the first intercommunicating pore connection
Pressure release epicoele and connecting pipe, the second intercommunicating pore connection pressure release cavity of resorption and piston cavity；When guide valve core is detached with the second valve seat
When, first intercommunicating pore and the second intercommunicating pore form a circuit.
4. axial-flow type water control relief valve as claimed in claim 2, it is characterised in that：The guide valve core is located at the upper of the second valve seat
Side, the guide valve core lower end is equipped with the first sealing ring coordinated with the second valve base sealing and the fixation for fixing the first sealing ring
Component, first sealing ring include the contact site that fixed part and self-fixed department extend to form, the cross section of the contact site into
Right angled triangle or obtuse triangle.
5. axial-flow type water control relief valve as described in claim 1, it is characterised in that：The pilot valve body is integrally formed simultaneously with valve body
Into hemispherical, the piston ring is fixed on by several bolt seals on pilot valve body.
6. axial-flow type water control relief valve as described in claim 1, it is characterised in that：Described piston ring one end is equipped with pacifies for piston
The installation opening of dress, the installation opening are resisted against on the first valve seat；The other end of the piston ring is equipped with mounting hole, the connecting pipe
It is inserted into piston ring from mounting hole and extends to water outlet across piston；The side wall of the piston ring is equipped with several keyings
Mouthful, the keying mouth is close to the installation opening.
7. axial-flow type water control relief valve as described in claim 1, it is characterised in that：The piston is equipped with and the first valve base sealing
The annular surface of cooperation, the groove opposite with annular surface and the perforation through piston, the groove form the work with piston ring
Inner cavity is filled in, the connecting pipe passes through the perforation.
8. axial-flow type water control relief valve as described in claim 1, it is characterised in that：Be equipped on first valve seat gland with
And the retainer ring of the first valve seat movement is set on the outside of gland and limits, first valve seat forms seal groove with gland, described close
It is equipped in sealing groove and coordinates the second sealing ring with piston seal, there are gaps between the seal groove and the second sealing ring.
9. axial-flow type water control relief valve as described in claim 1, it is characterised in that：The water inlet needle-valve is including adjustment portion and certainly
The tapered portion that adjustment portion extends to form, the adjustment portion are mounted on valve body and are pierced by valve body, and the tapered portion is mounted on piston
On ring and it is inserted into piston ring.
10. axial-flow type water control relief valve as described in claim 1, it is characterised in that：It is arranged on the connecting pipe positioned at work
The spring of intracavitary in plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420700.1U CN207514241U (en) | 2017-10-31 | 2017-10-31 | A kind of axial-flow type water control relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420700.1U CN207514241U (en) | 2017-10-31 | 2017-10-31 | A kind of axial-flow type water control relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207514241U true CN207514241U (en) | 2018-06-19 |
Family
ID=62535524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721420700.1U Active CN207514241U (en) | 2017-10-31 | 2017-10-31 | A kind of axial-flow type water control relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207514241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806524A (en) * | 2017-10-31 | 2018-03-16 | 安徽红星阀门有限公司 | A kind of axial-flow type water control pressure-reducing valve |
-
2017
- 2017-10-31 CN CN201721420700.1U patent/CN207514241U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806524A (en) * | 2017-10-31 | 2018-03-16 | 安徽红星阀门有限公司 | A kind of axial-flow type water control pressure-reducing valve |
| CN107806524B (en) * | 2017-10-31 | 2023-12-26 | 安徽红星阀门有限公司 | Axial-flow type water control pressure reducing valve |
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