CN205841829U

CN205841829U - Pressure valve

Info

Publication number: CN205841829U
Application number: CN201620716636.0U
Authority: CN
Inventors: 康乐; 康彤
Original assignee: Beijing Pml Precision Mechanism Ltd
Current assignee: Beijing Pml Precision Mechanism Ltd
Priority date: 2016-07-08
Filing date: 2016-07-08
Publication date: 2016-12-28
Anticipated expiration: 2026-07-08

Abstract

nullThe utility model discloses a kind of pressure valve,Including valve body、Valve pocket、The spool being arranged in valve pocket，The medial wall of described valve pocket is provided with effluent trough，Described spool axially arranged has blind hole along it，Described spool is provided through the through hole communicated with blind hole，The first sealing ring it is circumferentially provided with between described spool and valve pocket medial wall，Described spool is positioned at through hole and is provided with the second seal groove，The second sealing ring abutted for sealing through hole it is provided with valve pocket medial wall in described second seal groove，Its drip irrigation device is to be contacted with the medial wall entirety of valve pocket the lateral wall of spool，It is converted into spool by the first sealing ring、Second sealing ring offsets with the medial wall of valve pocket，Due to the first sealing ring、Second sealing ring is the least with the contact area of valve pocket，So greatly reducing the contact area with valve pocket，Reduce frictional force when spool moves relative to valve pocket，Reach to reduce the effect of frictional force between valve pocket and valve body.

Description

Pressure valve

Technical field

This utility model relates to a kind of valve field, more specifically, it relates to a kind of pressure valve.

Background technology

Pressure valve is also known as flow control valve, flow controller, flow balance valve, is the Flow-rate adjustment control of a kind of simplicity directly perceived Device processed, is used for controlling the direction of fluid, pressure, the device of flow are to make liquid in pipe arrangement and equipment, gas, flow of powder Or stop and controlling the device of its flow.

The Chinese patent of existing Publication No. CN203322401U, improves two by the way of using spool to stretch in valve seat Sealing between person, spool has the special construction of axial blind hole and radial direction through hole, reaches good sealing property, when there being current During to spool, owing to radial direction through hole is now in the state of sealing, water can promote spool relatively to slide on valve seat, when the most logical Hole departs from the contact of valve seat, and now water flows to outlet pipe through radial direction through hole.

But, spool in use, needs to slide on the medial wall of valve seat, for small-sized spool, and spool The connected mode of laminating valve body, makes spool contact area between valve seat excessive, can increase rubbing between spool and valve seat Wiping power, the elastic force of the Packing spring of small pressure valve is less, and the hydraulic pressure of small pressure valve is the lowest, causes between spool and valve seat Frictional force more than the elastic force of Packing spring or hydraulic pressure time, spool is difficult to slide axially along it in valve body.

Utility model content

The deficiency existed for prior art, the purpose of this utility model is that providing a kind of reduces between spool and valve body The pressure valve of frictional force.

For achieving the above object, this utility model provides following technical scheme:

A kind of pressure valve, including valve body, the valve that is arranged in valve body the valve pocket for circulation of supplying water, is arranged in valve pocket Core, the medial wall of described valve pocket is provided with effluent trough, and described spool axially arranged has blind hole along it, and described spool is provided through The through hole communicated with blind hole, is provided with elastic reaction in described valve pocket so that spool is positioned at the compressive resilience part of valve pocket, Being circumferentially provided with the first sealing ring between described spool and valve pocket medial wall, described spool is positioned at through hole and is provided with the second sealing Groove, is provided with the second sealing ring abutted for sealing through hole with valve pocket medial wall in described second seal groove.

By using technique scheme, valve body has the valve pocket of flowing of supplying water, and is provided with spool, spool and valve in valve pocket Being circumferentially provided with the first sealing ring between chamber, the first sealing ring is for preventing water from the gap between spool and the medial wall of valve pocket Place flows into effluent trough, and spool is used for making valve pocket connection or disconnecting, and is provided with blind hole, blind hole axially setting along spool on spool Putting, be provided through through hole on spool, through hole communicates with blind hole, and spool is provided with the second seal groove, the second seal groove position In through hole, being provided with the second sealing ring in the second seal groove, the second sealing ring offsets so that through hole is close with valve pocket medial wall Envelope, by using above-mentioned setting, contacts the lateral wall of spool with the medial wall entirety of valve pocket, is converted into spool close by first Seal, the second sealing ring offset with the medial wall of valve pocket, due to the first sealing ring, the second sealing ring and valve pocket contact area very Little, so greatly reducing the contact area with valve pocket, reduce frictional force when spool move relative to valve pocket, reach to reduce valve pocket and The effect of frictional force between valve body, when the water of certain pressure flows through spool, spool can accurately along valve pocket to compression elastic piece Sliding in direction, presses compression elastic piece, accurately controls the elastic deformation amount of compression elastic piece, and then reach accurately to control water and pass through The effect of the flow of spool.

Preferably, described second seal groove is axially extending along through hole, described second sealing ring and the second seal groove medial wall Laminating, connects between described second sealing ring and has leaf spring, and described leaf spring is vertical and blind hole is arranged, and can draw during described plate-shaped spring bends Dynamic second sealing ring departs from valve pocket.

By using technique scheme, fit in the medial wall of the second sealing ring and the second seal groove, the second seal groove to Blind hole direction extend, the second seal groove can sliding axially at the second seal groove, enable the second seal groove to depart from valve pocket, in phase To two the second sealing rings between be provided with leaf spring, leaf spring is vertically the most axially arranged with blind hole, has the current direction of certain pressure During spool, spool slides along valve pocket to water (flow) direction, and water can impact the middle part of leaf spring when entering in blind hole, make the middle part of leaf spring to The direction bending of current, the two ends of leaf spring can pull the second sealing ring to depart from valve pocket, reduces spool and slides to valve to water (flow) direction The friction area in chamber, owing to the size of friction area is directly proportional to frictional force, reduces frictional force when spool moves relative to valve pocket, Reach to reduce the effect of frictional force between valve pocket and valve body.

Preferably, described second sealing ring and leaf spring pass through bonding connection.

By using technique scheme, leaf spring passes through glue bonding connection the second sealing ring, it is possible to ensure the second sealing The elasticity of circle, thus reach the second good fixed effect of sealing ring.

Preferably, described second sealing ring is embedded is provided with and the cyclic reinforcing rib of the second sealing ring concentric.

By using technique scheme, in the second sealing ring, it is provided with cyclic reinforcing rib, cyclic reinforcing rib and second Sealing ring is coaxially disposed, and cyclic reinforcing rib can increase the intensity of the second sealing ring, it is to avoid the second sealing ring is connected in valve pocket During sidewall, the second sealing ring departs from valve pocket except the position of leaf spring, is prevented effectively between the second sealing ring and valve pocket product Raw gap, reaches the good sealing effectiveness of spool.

Preferably, the lateral wall of described spool is circumferentially provided with for preventing the first sealing ring from departing from the first sealing of spool Groove.

By using technique scheme, being circumferentially provided with the first seal groove on spool, the first seal groove is used for fixing First sealing ring is in the axial position of spool, and when spool moves axially along valve pocket, the first seal groove drives the first sealing ring one Rise and move with spool, prevent the first sealing ring from departing from spool, it is to avoid water enters effluent trough from the gap between spool and valve pocket, makes Uncontrollable by the water yield of spool, and then reach the effect that can control water through spool flow.

Preferably, the lateral wall circumference of described spool is evenly arranged with spherical groove, is provided with rolling in described spherical groove Pearl, described spool is offseted with valve seat by ball.

By using technique scheme, owing to the first sealing ring is made up of elastomeric material, when spool is in the footpath of valve pocket When unbalance stress, spool is easily to the side deflection of valve pocket, and the side of the first sealing ring is squeezed, and causes the first sealing ring Be squeezed place's Fast Wearing, is provided with spherical groove on the lateral wall of spool, is provided with ball, ball edge in spherical groove The lateral wall circumference of spool is uniformly arranged, and spool is offseted with spool by ball, when spool is at unbalance stress, and the rolling on spool Pearl offsets with valve pocket, is prevented effectively from spool deflection, causes the situation of extruding the first sealing ring, thus avoids the damage of the first sealing ring Bad, it is effectively improved the service life of the first sealing ring.

Preferably, the medial wall of described effluent trough is provided with taper seat near through hole, and the diameter of described taper seat is along water Flow path direction becomes larger.

By using technique scheme, the water with certain pressure intensity flow to spool, and spool is positioned at one end of blind hole by the One sealing ring, the second sealing ring seal, and when the active force of water pressure pushing spool is more than the elastic force of compressive resilience part, spool is to pressure Sliding in power elastic component direction, until through hole enters effluent trough, the second sealing ring departs from valve pocket, and the water-jet in spool is to effluent trough Diapire, water at a high speed strikes the diapire of effluent trough, is then recoiled to through hole by the diapire of effluent trough, to flow out from through hole Water has the biggest drag effect, affects the water yield flowed out from through hole, is provided with taper seat, circular cone on the medial wall of effluent trough The diameter in face becomes larger along the direction of current, and in through hole, the water of injection can strike taper seat, and the taper seat of inclination is to water Guide, make water along valve pocket axially continue flowing, it is to avoid water springs back to through hole after striking taper seat, causes from through hole Flow out the water yield impact of water, make water flow out from through hole uniformly, thus reach the effect of spool control accurate to discharge.

Preferably, described spool is provided with near the side of compressive resilience part for positioning spool at valve pocket axial location Projection, described projection is provided through, along spool, the tapping hole that some water supply is passed through.

By using technique scheme, being typically provided with projection on spool, projection can limit compressive resilience part will Spool is along the distance axially promoted of valve pocket, and the water flowed out in through hole moves to compressive resilience part direction, but projection can hinder Hindering the flowing of water, be provided through tapping hole on projection, water flows uniformly through tap hole, and water flows to valve pocket through tapping hole, reaches Well guide water flows to effect.

Preferably, described tapping hole is all arranged in an axially parallel mode along spool.

By using technique scheme, axially arranged along spool that tapping hole is concrete, the water guided through taper seat is straight Footpath enters tap hole, makes water enter valve pocket, and reach well to guide water flows to effect.

Preferably, described tapping hole is all obliquely installed near one end of compressive resilience part at compressive resilience part axle center.

By using technique scheme, tapping hole is obliquely installed, and one end of tapping hole is positioned at taper seat, other end position At the axle center of compressive resilience part, tapping hole has a good drainage effect to water, and on the other hand, the water guided through tapping hole is not Can be directly impinging on compressive resilience part, it is to avoid cause the elastic force on compressive resilience part to affect, it is to avoid to make compressive resilience part pull Or promote spool to slide in valve pocket, cause being turned on and off of passage, it is to avoid make that water can not be stable through spool, thus reach Effect to good stationary flow.

In sum, this utility model has the advantages that

1, reach to reduce the effect of frictional force between valve pocket and valve body；

2, reach accurately to control the effect of the water flow by spool；

3, reach to improve the effect in the service life of the first sealing ring.

Accompanying drawing explanation

Fig. 1 is embodiment one structural representation；

Fig. 2 is the enlarged drawing of part A in Fig. 1；

Fig. 3 is embodiment two structural representation；

Fig. 4 is the enlarged drawing of part B in Fig. 3.

In figure: 1, valve body；11, valve pocket；12, water inlet pipe；13, effluent trough；131, taper seat；14, osculum；141, ladder Hole；142, compressive resilience part；2, spool；21, projection；211, tapping hole；22, blind hole；23, through hole；231, the second seal groove； 232, the second sealing ring；2321, cyclic reinforcing rib；24, the first seal groove；241, the first sealing ring；25, spherical groove；251、 Ball；3, leaf spring.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, this utility model is described in detail.

Embodiment one:

A kind of pressure valve, with reference to Fig. 1, it includes the valve body 1 of cylinder, has the valve pocket 11 of flowing of supplying water, valve in valve body 1 Water inlet pipe 12, spool 2, effluent trough 13, compressive resilience part 142, osculum 14 it is disposed with in chamber 11.

Seeing figures.1.and.2, spool 2 is cylindrical structural, and spool 2 axially arranged has blind hole 22, blind hole 22 and spool along it 2 concentrics, spool 2 is provided through through hole 23, and through hole 23 communicates with blind hole 22, circumferentially disposed on the circumferential side wall of spool 2 Having the first seal groove 24, the cross section of the first seal groove 24 is rectangle, and the first seal groove 24 is positioned at the left side of through hole 23, and first seals Being provided with the first sealing ring 241, the material preferred rubber of the first sealing ring 241 in groove 24, the cross section of the first sealing ring 241 is square Shape structure, the gap between the first sealing ring 241 sealed valve core 2 and valve pocket 11 medial wall, the lateral wall of spool 2 is provided with Spherical groove 25, spherical groove 25 is uniformly arranged along its circumference on the circumferential side wall of spool 2, is provided with in spherical groove 25 Ball 251, spool 2 is offseted with valve pocket 11 by ball 251.

See figures.1.and.2, spool 2 is provided with the second ring-type seal groove 231, the second seal groove 231 and through hole 23 Concentric is arranged, and the second seal groove 231 is positioned at the through hole 23 port near valve pocket 11, and the second seal groove 231 is with through hole 23 altogether With the shape of formation shoulder hole 141, the medial wall of the second seal groove 231 is provided with the second sealing ring 232, the second sealing ring The material preferred rubber of 232, the second sealing ring 232 is rectangular configuration, is provided with cyclic reinforcing rib in the second sealing ring 232 2321, cyclic reinforcing rib 2321 uses elastic metallic material to make, the lateral wall of the second sealing ring 232 and the second sealing ring 232 Medial wall offset, the degree of depth of the second seal groove 231 is higher than the height of the second sealing ring 232, and the second sealing ring 232 can be along through hole The axially-movable of 23, connects between two the second sealing rings 232 and has the leaf spring 3 of rectangle, and leaf spring 3 is along the axle being perpendicular to blind hole 22 To setting, the diapire of the protruding and close blind hole 22 in the middle part of leaf spring 3, the end of leaf spring 3 is glued by viscose and the second sealing ring 232 Knot, it is achieved fixing of the second sealing ring 232.

Seeing figures.1.and.2, be provided with projection 21 on the right side of spool 2, projection 21 is and the cylinder of spool 2 concentric Structure, the diameter of projection 21, more than the diameter of spool 2, the medial wall of effluent trough 13 is provided with taper seat 131, taper seat 131 Diameter from left to right becomes larger, and the sidewall that projection 21 is relative with taper seat 131 is also configured to pyramid type inclined-plane, projection 21 Conical inclined surface is coincide with taper seat 131, when the conical inclined surface of projection 21 offsets with taper seat 131, it is possible to play valve Core 2 spacing, prevent spool 2 excessive pushed to left side by compressive resilience part 142, compressive resilience part 142 is arranged on osculum 14 In, compressive resilience part 142 preferred compressed spring, it is provided with shoulder hole 141, compressive resilience part 142 one end and rank in osculum 14 The diapire in ladder hole 141 offsets, and the other end offsets with projection 21, and the edge of projection 21 is provided through equally distributed some points of water Hole 211, tapping hole 211 is parallel to the axially arranged of spool 2.

Work process: see figures.1.and.2, when have in valve pocket 11 certain pressure intensity water flow time, water first can flow to into Water pipe 12, water continues to flow to the right, and the pressure, push spool 2 of water moves right, and during spool 2 moves right, extruding is compressed Spring；In water flows into blind hole 22, first the water in blind hole 22 can impact leaf spring 3 and bend to the diapire direction of blind hole 22, bending The distance at leaf spring 3 two ends diminish, leaf spring 3 pulls second sealing ring 232 at its two ends, makes the second sealing ring 232 to blind hole 22 Direction is moved, and the second sealing ring 232 departs from valve pocket 11, thus reduce during spool 2 slides to the right with the rubbing of valve pocket 11 Wiping, when the through hole 23 of spool 2 slides into effluent trough 13, the port of through hole 23 departs from the blocking of valve pocket 11, the water in through hole 23 Can shoot on taper seat 131, water is guided by taper seat 131, and the water through taper seat 131 can be along the axis side of projection 21 To flowing, water enters tapping hole 211 and flows in osculum 14, and water sequentially enters to the right osculum 14 and shoulder hole 141, and continues Continue and flow to the right valve pocket 11.

Seeing figures.1.and.2, when the pressure deficiency of water in valve pocket 11, the hydraulic pressure in valve pocket 11 is less than the bullet of compression spring Power, compression spring promotes spool 2 to the left, until the taper seat 131 of the conical inclined surface of projection 21 and effluent trough 13 offsets, this Time, owing to leaf spring 3 does not has the impact of water, leaf spring 3 to recover elastic deformation, the two ends elongation of leaf spring 3, leaf spring 3 promotes the second sealing Through hole 23, at the slide over side walls of the second seal groove 231, until offseting with valve pocket 11, is fully sealed by circle 232, and water cannot pass through Spool 2 continues to flow to the right, it is achieved valve pocket 11 is closed by spool 2.

Embodiment two:

A kind of pressure valve, the difference with embodiment one is as follows:

With reference to Fig. 3 and Fig. 4, the setting direction of the tapping hole 211 that the difference from embodiment one is in the present embodiment is different, The tapping hole 211 of the present embodiment runs through projection 21 and is obliquely installed, and tapping hole 211 one end is at taper seat 131, and the other end leans on The axle center of nearly compression spring, it is to avoid the water slug compression spring of tapping hole 211 injection, it is to avoid affect the elastic force of compression spring.

Work process: with reference to Fig. 3 and Fig. 4, when water flows in effluent trough 13 through tapping hole 211, due in embodiment one Water always can wash away compression spring, the change of the elastic force of compression spring can be caused, the promotion of spool 2 is produced by mistake by compression spring Difference, spool 2 can not accurately control the flow of water, so tapping hole 211 is obliquely installed by the present embodiment, imports from taper seat 131 The water of tapping hole 211 can strike the sidewall of tapping hole 211, and the flow velocity of water reduces, and water flows to effluent trough through tapping hole 211 13, make the shaft core position of current direction compression spring, thus greatly reduce the water impulsive force to compression spring, reduce compression spring and be subject to To the impulsive force of water, thus the deformation that compression spring is produced by the impact reducing water, enable compression spring correct balance water Pressure, it is achieved the spool 2 accurate control to the water yield through spool 2.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.Should refer to Go out, for those skilled in the art, without departing from the some improvement under this utility model principle premise and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims

1. a pressure valve, including valve body (1), is arranged in valve body (1) valve pocket (11) for circulation of supplying water, is arranged on valve pocket (11) spool (2) in, the medial wall of described valve pocket (11) is provided with effluent trough (13), and described spool (2) is axially arranged along it Having blind hole (22), described spool (2) to be provided through the through hole (23) communicated with blind hole (22), described valve pocket is provided with in (11) By elastic reaction so that spool (2) is positioned at the compressive resilience part (142) of valve pocket (11), it is characterized in that: described spool (2) with Being circumferentially provided with the first sealing ring (241) between valve pocket (11) medial wall, described spool (2) is positioned at through hole (23) place and is provided with Two seal grooves (231), are provided with in described second seal groove (231) and abut with valve pocket (11) medial wall for sealing through hole (23) the second sealing ring (232).

Pressure valve the most according to claim 1, is characterized in that: described second seal groove (231) is axially prolonged along through hole (23) Stretching, described second sealing ring (232) is fitted with the second seal groove (231) medial wall, connects between described second sealing ring (232) Having leaf spring (3), described leaf spring (3) is vertical and blind hole (22) is arranged, and can pull the second sealing ring during described leaf spring (3) bending (232) valve pocket (11) is departed from.

Pressure valve the most according to claim 2, is characterized in that: described second sealing ring (232) and leaf spring (3) are by bonding Connect.

Pressure valve the most according to claim 2, is characterized in that: described second sealing ring (232) is embedded to be provided with and second The cyclic reinforcing rib (2321) of sealing ring (232) concentric.

Pressure valve the most according to claim 1, is characterized in that: the lateral wall of described spool (2) is circumferentially provided with for preventing Only the first sealing ring (241) departs from first seal groove (24) of spool (2).

Pressure valve the most according to claim 1, is characterized in that: the lateral wall circumference of described spool (2) is evenly arranged with ball Face groove (25), is provided with ball (251) in described spherical groove (25), described spool (2) passes through ball (251) and valve pocket (11) offset.

Pressure valve the most according to claim 1, is characterized in that: the medial wall of described effluent trough (13) is near through hole (23) place Being provided with taper seat (131), the diameter of described taper seat (131) becomes larger along water (flow) direction.

Pressure valve the most according to claim 1, is characterized in that: described spool (2) is near the side of compressive resilience part (142) Being provided with for positioning the spool (2) projection (21) at valve pocket (11) axial location, described projection (21) runs through along spool (2) and sets It is equipped with the tapping hole (211) that some water supply is passed through.

Pressure valve the most according to claim 8, is characterized in that: described tapping hole (211) all sets along spool (2) is axially in parallel Put.

Pressure valve the most according to claim 8, is characterized in that: described tapping hole (211) is near compressive resilience part (142) One end be all obliquely installed at compressive resilience part (142) axle center.