CN105972265A

CN105972265A - Automatic venting type universal water shut-off valve

Info

Publication number: CN105972265A
Application number: CN201610508401.7A
Authority: CN
Inventors: 王上胜; 杨鹏
Original assignee: Zhejiang Shenghuabo Electrical Applicance Co Ltd
Current assignee: Zhejiang Shenghuabo Electrical Applicance Co Ltd
Priority date: 2016-06-22
Filing date: 2016-06-22
Publication date: 2016-09-28
Anticipated expiration: 2036-06-22
Also published as: CN105972265B

Abstract

The invention discloses an automatic venting type universal water shut-off valve, which comprises a valve seat (2), a valve body, a valve spool (10) and a valve bonnet (7); an inner notch (20) is formed on the inner wall of the valve bonnet at the end of an inlet; the valve body comprises an external valve body (5) and an internal valve body (6); one end of the external valve body is connected with the valve bonnet, the other end is connected with the valve seat; a valve plate (8) and a valve plate spring (9) are mounted on the valve body at the position near the inner notch of the valve bonnet; a venting hole (15) is formed on the valve body; a gap (14) communicating with the venting hole is disposed between the internal valve body and the valve plate. The valve disclosed by the invention not only can prevent washing liquid from flowing back, but also can completely discharge the air in the pipe communicating the washing pump chamber and the universal water shut-off valve, thereby completely solving the problem that the washing apparatus filled with washing liquid cannot deliver the washing liquid, and the problem that the valve spool cannot be pushed open because of the counterforce applied on the valve spool by liquid, and achieves excellent universality.

Description

The general water check valve of automatic vent type

Technical field

The present invention relates to a kind of valve, be specifically related to a kind of water check valve being applied to scrubber.

Background technology

At present, being applied to the water check valve of scrubber is a kind of to be provided with washing of pressure by washing pump Washing liquid and push the spool pushed down with valve core spring open, make spraying cleaning solution go out, washing pump stops work After work, spool is rebounded by the valve core spring within water check valve, is closed by pipeline, in whole pipeline Cleaning mixture will not reflux, when be again turned on scrubber work time, can immediately by cleaning mixture spray It is incident upon on forward and backward windshield.Water check valve is that the elastic force of the valve core spring internal by it is pushed down Spool, when not working (no pressure) be close, when in scrubber without cleaning mixture or user By cleaning mixture with when only needing again to add cleaning mixture, then from the pump chamber of washing pump to only connecting The air of this section of channel interior of water valve cannot be discharged, if inside pump chamber because of the normally closed of water check valve There is air, washing pump can be caused to dally, it is impossible to the ability of conveying cleaning mixture is provided, need artificial After pump chamber inner air emptying, overall washing system can normally work, and reduces work effect Rate.Generally, after the spool of water check valve is by there being pressure fluid to push open, pressure fluid is had only to flow through The spool of water valve simultaneously, also can bring reverse thrust to spool, when pressure continues to rise, instead Effect also may proceed to increase, and when the fluid pressure of spool both ends of the surface is equal, then liquid is because of spool The elastic force of spring cannot push spool open, causes overall washing system do not spray water or spray water the most smooth.Cause This, this water check valve all can only work under the restriction nominal pressure scope of design, thus significantly drops The low versatility of water check valve.

Summary of the invention

It is an object of the invention to overcome above-mentioned deficiency, and provide a kind of automatic vent type and lead to With water check valve, it is intended to be automatically drained out circuit air, it can in addition contain improve its versatility.

The present invention is to realize by following technical solution: the general water check valve of automatic vent type, bag Include valve seat, valve body, spool, valve gap, on the inwall of described valve gap and at the end of its import Place is provided with interior breach, and described valve body includes outer valve and the inner valve body being connected, the one of this outer valve End connects with valve gap, its other end connects with valve seat, on described inner valve body and near valve The interior indentation, there of lid is equipped with valve block and valve block spring；Described inner valve body is provided with air-vent, There is between described inner valve body and valve block the gap communicated with this air-vent.

Equipped with spool bracing frame between described valve seat, outer valve and spool, described spool supports The outer wall of frame be provided with brace rod and and form fluid passage between described valve seat, outer valve.

After using present configuration, after scrubber's work stops, it is possible not only to prevent cleaning mixture Backflow, simultaneously can also be by the pump chamber of washing pump to connecting this this section of channel interior of general water check valve Air pass sequentially through valve gap import, valve gap, valve body valve pocket, gap, air-vent discharge emptying, The problem that scrubber but cannot carry cleaning mixture is opened after stopping completely to fill it up with cleaning mixture.Solve simultaneously Determine because the counteracting force of spool can not be pushed open the problem of spool by liquid, regardless of washing The pressure size issue of device, can be suitably used for the scrubber in any vehicle, and versatility is widely.

Accompanying drawing explanation

The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.

Fig. 1 is the mounting structure schematic diagram of the general water check valve of automatic vent type of the present invention.

Fig. 2 is the axonometric chart of the spool bracing frame in Fig. 1.

Detailed description of the invention

Understanding with reference to Fig. 1, Fig. 2, the general water check valve of automatic vent type of the present invention, including valve seat 2, valve body, spool 10 (and valve core spring 3), valve gap 7, on the inwall of described valve gap 7, And interior breach 20 it is provided with in the end of its import, described valve body includes the outer valve 5 being connected (in outside) and inner valve body 6 (in inside), one end of this outer valve 5 connects with valve gap 7, Its other end connects with valve seat 2, on described inner valve body 6 and scarce in valve gap 7 Equipped with valve block 8 and valve block spring 9 at Kou；Being provided with air-vent 15 on described inner valve body 6 (should Air-vent 15 is communicated with ambient atmosphere by outer valve 5), at described inner valve body 6 and valve block 8 Between there is the gap 14 communicated with this air-vent 15.Described valve seat 2, outer valve 5 with Equipped with spool bracing frame 4 between spool 10, the outer wall of described spool bracing frame 4 is provided with and props up Support muscle 13 and and between described valve seat 2, outer valve 5 formed fluid passage 16 (see Fig. 2).

Wherein, the inside (i.e. the outside of inner valve body 6) of outer valve 5 has valve body valve pocket 17 And the cavity entered as degassing function, liquid；The inside of valve seat 2 has valve seat valve pocket 18 The cavity flowed out as liquid, and communicate with the fluid passage 16 on spool bracing frame 4 outer wall； The outlet of valve seat 2 can be connected with the nozzle on forward and backward windshield even by dead ring and pipeline Logical, the pump chamber that the import of valve gap 7 is connected with the washing pump providing pressure by pipeline connects.

Operation principle of the present invention is as shown in drawings: this general check-valves is in the non-operational state (liquid no pressure), spool 10 is owing to being moved right by the elastic force of valve core spring 3, by valve The channel enclosed being connected with valve body valve pocket and valve seat valve pocket on body, valve seat, the liquid of valve seat valve pocket Cannot be back in valve body valve pocket.Promote to the right valve block 8 by the elastic force of valve block spring 9 simultaneously To the interior breach defined position of valve gap 7, make the gap 14 on valve body valve pocket 17, inner valve body, The atmosphere that the import of air-vent 15 and valve gap 7 is extraneous with outer valve.When washing pump works Time, if having air in the pump chamber of washing pump and pipeline, washing pump dallies and cannot be provided with pressure The liquid of power, is equivalent to non-operational state, then the air in washing pump pump chamber and pipeline can lead to Cross valve gap import, valve gap, valve body valve pocket, gap, air-vent discharge, a denier air emptying, Liquid makes liquid form pressure in initially entering washing pump pump chamber.Liquid is entered by valve gap import again Enter valve gap 7 and promote valve block 8 to the left, making the passage that valve body valve pocket, gap connect with air-vent Closing (valve block spring is compressed simultaneously), the liquid in valve body valve pocket continues push spool open and press Retractor spool spring 3, liquid flows in valve seat valve pocket 18, then flows out from the outlet of valve seat 2. Described spool bracing frame 4 is one to be had in the middle of it on cylindrical container of opening, its outer wall and has Having a plurality of brace rod cincture, the two ends of this brace rod are mated with valve seat, outer valve respectively, spool One end of spring and spool is fixed in the cylindrical container being placed in spool bracing frame opening.

When liquid enters the fluid passage on valve seat valve pocket, spool bracing frame outer wall, its pressure Only the outer wall of spool bracing frame can be worked, without the spool in spool bracing frame is acted as With, it is to avoid the counteracting force of spool is caused water check valve to close by liquid cannot carry liquid Problem.

Claims

1. the general water check valve of automatic vent type, including valve seat (2), valve body, spool (10), Valve gap (7), it is characterised in that: on the inwall of described valve gap (7) and at the end of its import Being provided with interior breach (20) at end, described valve body includes outer valve (5) and the inner valve body (6) being connected, One end of this outer valve (5) connects with valve gap (7), its other end connects with valve seat (2), At described inner valve body (6) above and in the interior indentation, there near valve gap (7) equipped with valve block (8) And valve block spring (9)；Described inner valve body (6) is provided with air-vent (15), in described There is between valve body (6) with valve block (8) gap (14) communicated with this air-vent (15).

2. the general water check valve of automatic vent type as claimed in claim 1, it is characterised in that: Equipped with spool bracing frame (4) between described valve seat (2), outer valve (5) and spool (10), The outer wall of described spool bracing frame (4) be provided with brace rod (13) and with described valve seat (2), Fluid passage (16) is formed between outer valve (5).