CN208535194U

CN208535194U - A kind of back-water valve (BWV)

Info

Publication number: CN208535194U
Application number: CN201820954714.XU
Authority: CN
Inventors: 陈家渝
Original assignee: Zhejiang Xin Lu Xiongjian Cheerful Agriculture Machinery Corp
Current assignee: Zhejiang Xin Lu Xiongjian Cheerful Agriculture Machinery Corp
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2019-02-22
Anticipated expiration: 2028-06-21

Abstract

The utility model relates to spraying machine fields, more particularly to a kind of back-water valve (BWV), including valve seat, equipped with valve chamber and the return water valve chamber being connected with valve chamber in valve seat, spool is equipped in valve chamber, spool includes return water needle-valve, return water cup and backwater base, is equipped with return water needle in backwater base, the mounting groove that return water needle-valve is equipped with and return water needle matches is equipped with buffer gasket between return water cup and backwater base；Backwater base is equipped with the first lock chamber and the second lock chamber being connected, and the first lock chamber and return water needle match, and spacing collar and sealing ring are equipped in the second lock chamber.The utility model has the characteristics that be hardly damaged.

Description

A kind of back-water valve (BWV)

Technical field

The utility model relates to spraying machine fields, and in particular to a kind of back-water valve (BWV).

Background technique

Spraying machine, which usually requires certain pressure, will run, when spraying machine stops working, it usually needs let out Pressure, when carrying out pressure release, part water flow is back to water tank, but since pressure is larger, water flow impact pressure is larger, is easy to lead It causes that frictional impact occurs between each component of spool, to cause the damage of spool, reduces the service life of back-water valve (BWV), while So that sealing effect declines, therefore spraying machine needs biggish power to be just able to maintain normal operating pressure in working condition.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of non-damageable back-water valve (BWV)s.

To achieve the above object, the utility model provides following technical solution: be equipped with including valve seat, in valve seat valve chamber and The return water valve chamber being connected with valve chamber, valve chamber is interior to be equipped with spool, and spool includes return water needle-valve, return water cup and backwater base, backwater base Interior to be equipped with return water needle, the mounting groove that return water needle-valve is equipped with and return water needle matches is equipped with buffering between return water cup and backwater base Washer；

Backwater base is equipped with the first lock chamber and the second lock chamber being connected, and the first lock chamber and return water needle match, Spacing collar and sealing ring are equipped in second lock chamber.

Further, it is additionally provided with the fixing seat for fixed spool in valve chamber, fixing seat is equipped with limit base, limit base and solid Limiting slot is formed between reservation, is equipped with rubber washer in limiting slot.

Further, it is additionally provided with shoe cream room in spacing collar, through-hole is additionally provided on spacing collar, through-hole is connected with shoe cream room.

Further, it is additionally provided with the dashpot for fixing buffer gasket on backwater base, is additionally provided with several on backwater base and disappears Sound chamber.

The deficiencies in the prior art are compared, the utility model has the advantages that at work brought by technical solution provided by the utility model, Water impact return water needle-valve simultaneously enters in valve chamber, because pressure is larger, when entering in valve chamber, water flow can impact back water flow Cup, therefore the presence of buffer gasket reduces friction and collision between return water cup and backwater base, while spacing collar and sealing The presence of circle makes return water needle when moving back and forth, and can effectively be fixed, be avoided due to water flow impact pressure size and side To it is irregular and caused by return water needle in the process of reciprocating generate inclination caused by ground between return water needle and backwater base The problem of damage is aggravated, while the presence of sealing ring fixes cavity but also water flow will not enter second, avoids in water Impurity causes the problem of wearing spacing collar and return water needle, therefore the service life is longer for back-water valve (BWV), is hardly damaged.

Detailed description of the invention

Fig. 1 is the configuration schematic diagram of the utility model.

Fig. 2 is the fixed seat structure schematic diagram of the utility model.

Fig. 3 is the backwater base structural schematic diagram of the utility model.

Fig. 4 is the spacing collar cross-sectional view of the utility model.

Specific embodiment

It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent It selects embodiment to be merely to illustrate and explain the present invention, is not used to limit the utility model.

- Fig. 4 is described further the utility model referring to Fig.1.

A kind of back-water valve (BWV), including valve seat 1, the interior return water valve chamber 12 for being equipped with valve chamber 11 and being connected with valve chamber 11 of valve seat 1, Spool is equipped in valve chamber 11, spool includes return water needle-valve 32, return water cup 3 and backwater base 2, is equipped with return water needle 13 in backwater base 2, returns The mounting groove 321 that water needle valve 32 is equipped with and return water needle 13 matches is equipped with buffer gasket 31 between return water cup 3 and backwater base 2；

Backwater base 2 is equipped with the first lock chamber 21 and the second lock chamber 22 being connected, the first lock chamber 21 and return water needle 13 match, and are equipped with spacing collar 24 and sealing ring 25 in the second lock chamber 22；Therefore at work, water impact return water needle-valve 32 And enter in valve chamber 11, because pressure is larger, for water flow when entering in valve chamber 11, water flow can impact return water cup 3, therefore slow The presence for rushing washer 31 reduces friction and collision between return water cup 3 and backwater base 2, while spacing collar 24 and sealing ring 25 In the presence of so that return water needle 13 can be fixed effectively, be avoided due to water flow impact pressure size and Orientation when moving back and forth It is irregular and caused by return water needle 13 generate in the process of reciprocating inclination caused by between return water needle 13 and backwater base 2 The problem of abrasion aggravates, while the presence of sealing ring 25 fixes cavity 22 but also water flow will not enter second, avoids Impurity in water causes the problem of wearing spacing collar 24 and return water needle 13, therefore the service life is longer for back-water valve (BWV), no It is easy to damage.

Further, the fixing seat 4 for fixed spool is additionally provided in valve chamber 11, fixing seat 4 is equipped with limit base 42, limit Limiting slot 43 is formed between seat 42 and fixing seat 4, is equipped with rubber washer 41 in limiting slot 43, the presence of rubber washer 41 makes back When water valve is connect with other component, sealing effect is more preferable, avoids the problem that water flow leaks generation from junction, limit base 42 is deposited But also rubber washer 41 will not be subjected to displacement, avoid because rubber washer 41 is subjected to displacement and caused by sealing effect become The problem of difference occurs, so that service life is more long.

Further, it is additionally provided with shoe cream room 241 in spacing collar 24, through-hole 242, through-hole 242 and storage are additionally provided on spacing collar 24 Oil pocket 241 is connected, and spacing collar 24 is rubber material, and through-hole 242 and return water needle 13 are in contact, and spacing collar 24 plays return water needle 13 To the effect of cross spacing, therefore when return water needle 13 moves back and forth in the vertical direction, since the presence of frictional force can squeeze limit Position circle 24, so that the lubricating oil being stored in shoe cream room 241 is applied on return water needle 13 along through-hole 242, so that return water needle 13 It is more smooth when pumping, reduce abrasion, while water flow can preferably open return water needle-valve 32, so that pressure release is more Fastly.

Further, the dashpot 24 for fixing buffer gasket 31 is additionally provided on backwater base 2, if being additionally provided on backwater base 2 Dry silencing cavity 23, therefore buffer gasket 31 will not be subjected to displacement, and avoided buffering effect caused by buffer gasket 31 is displaced and subtracted Weak problem occurs, while the presence of silencing cavity 23 enables the sound generated when water impact return water cup 3 and 1 inner wall of valve seat It is effectively reduced, so that at work, noise is smaller, so that the working environment of worker is more comfortable.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, the skill of this field Art personnel carry out common variations and alternatives within the scope of technical solutions of the utility model should be included in the guarantor of the utility model It protects in range.

Claims

1. a kind of back-water valve (BWV), it is characterised in that: including valve seat, equipped with valve chamber and the return water being connected with valve chamber in the valve seat Valve chamber, the valve chamber is interior to be equipped with spool, and the spool includes return water needle-valve, return water cup and backwater base, the backwater base It is interior to be equipped with return water needle, the mounting groove that the return water needle-valve is equipped with and return water needle matches, the return water cup and backwater base Between be equipped with buffer gasket；

The backwater base is equipped with the first lock chamber and the second lock chamber being connected, first lock chamber and return water needle Match, spacing collar and sealing ring are equipped in second lock chamber.

2. a kind of back-water valve (BWV) according to claim 1, it is characterised in that: be additionally provided in the valve chamber for fixed spool Fixing seat, the fixing seat be equipped with limit base, limiting slot, the limit are formed between the limit base and fixing seat Rubber washer is equipped in the slot of position.

3. a kind of back-water valve (BWV) according to claim 1, it is characterised in that: be additionally provided with shoe cream room, institute in the spacing collar Through-hole is additionally provided on the spacing collar stated, the through-hole is connected with shoe cream room.

4. a kind of back-water valve (BWV) according to claim 1, it is characterised in that: be additionally provided on the backwater base for fixed slow The dashpot of washer is rushed, several silencing cavities are additionally provided on the backwater base.