CN202708184U

CN202708184U - Floating diaphragm type electromagnetic valve

Info

Publication number: CN202708184U
Application number: CN 201220276710
Authority: CN
Inventors: 吴培生
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-13
Filing date: 2012-06-13
Publication date: 2013-01-30
Anticipated expiration: 2022-06-13

Abstract

Disclosed is a floating diaphragm type electromagnetic valve. The floating diaphragm type electromagnetic valve mainly comprises a valve body, a valve cap, a diaphragm component and a pilot-operated head, the valve cap is located on the valve body and fixed by a hexagon socket cap screw, the diaphragm component is placed between the valve cap and the valve body, the upper end of the valve cap is connected with the pilot-operated head in a spiral mode, a groove is mounted on the valve cap, a large O-shaped ring which is in contact with the end face of the valve body is placed in the groove, a groove is arranged on the valve body, a small O-shaped ring which is in contact with the end face of the valve cap is placed in the groove of the valve body, and the two O-shaped rings are staggered. The floating diaphragm type electromagnetic valve has the advantages that a diaphragm is arranged between the valve body and the valve cap along the edge, a gap of about 0.5mm between the diaphragm and the valve body is reserved, a gap of about 0.5mm between the diaphragm and the valve cap is reserved, so that the diaphragm can not be tightly pressed by the valve body and the valve cap, when a valve is opened or closed, floating stretching can be achieved, and advantages of high action reliability of a rubber diaphragm and good fluid medium resistance of a piston valve are combined.

Description

Floating diaphragm formula solenoid valve

Technical field

The utility model relates to a kind of solenoid valve, relates in particular to a kind of floating diaphragm formula solenoid valve.

Background technique

At present, common diaphragm electromagnetic valve shortcoming: 1, common diaphragm electromagnetic valve adopts rubber seal, by compressing elastomer diaphragm along the limit, elastomer diaphragm is fixed and is reached sealing effect between valve body and the valve gap.In electromagnetic valve work, elastomer diaphragm is subjected to the working pressure effect, pulls up and down, the bending campaign, and the action position of diaphragm is damaged, cracking easily, thereby electromagnetic valve work was lost efficacy; 2, the elastomer diaphragm of common diaphragm electromagnetic valve, because rubber material fluid-resistant working medium scope is little, often can be because of the medium reason phenomenons such as expanding, shrink, break that causes elastomer diaphragm, thus make the electromagnetic valve work inefficacy; 3, the elastomer diaphragm of common diaphragm electromagnetic valve, because rubber is of a great variety, every kind of rubber contractibility is different, needs correspondence to open how secondary mould production, and is difficult to accomplish that the size that the elastomer diaphragm of every kind of material works it out is all relatively uniform; Also have, every kind of material all will be got ready the goods, and stock's volume of the circular flow is very big, takies a large amount of circulating funds; 4, the General Purpose Rubber diaphragm easily is subjected to the factors such as environment, time and wears out, and can not preserve for a long time.

Summary of the invention

The purpose of this utility model is to overcome the deficiency that prior art exists, and provides a kind of diaphragm to be in quick condition, reliability is high, the fluid-resistant medium is good floating diaphragm formula solenoid valve.

The purpose of this utility model is finished by following technical solution, it mainly is made of valve body, valve gap, diaphragm unit, pilot head, described valve gap is positioned on the valve body, and fixed by hexagon socket cap head screw, and be placed with diaphragm unit between valve gap and valve body, the upper end of valve gap is connected with pilot head by spiral way; Offer groove at this valve gap, in be placed with and the contacted large O type circle of valve body end face, offer groove on the valve body, in be placed with and the contacted little O type circle of valve gap end face, and this two O type circle is in staggered distribution.

As preferably, described diaphragm unit is combined pallet, diaphragm, sealing gasket by rivet by tray, and accompanies seal washer between rivet and pallet; This pallet is positioned at the shoulder hole of valve gap, and shoulder hole and pallet connect and accompany a spring, and an end of this spring contacts with described pallet, and its other end contacts with the shoulder hole inwall.

As preferably, described diaphragm is made by the polytetrafluoroethylene material; This diaphragm places between valve body and the valve gap along the limit, and the gap about 0.5mm is arranged up and down, is the float extension state.

The beneficial effects of the utility model are: diaphragm places between valve body and the valve gap along the limit, gap about 0.5mm is arranged up and down, do not compressed by valve body, valve gap, energy float extension when valve switch moves combines elastomer diaphragm Reliability of Microprocessor height and the good advantage of piston valve fluid-resistant medium.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Label in the accompanying drawing is respectively: 1, pilot head; 2, spring; 3, rivet; 4, seal washer; 5, valve gap; 6, large O type circle; 7, little O type circle; 8, pallet; 9, diaphragm; 10, sealing gasket; 11, tray; 12, valve body; 51, shoulder hole.

Embodiment

Below in conjunction with accompanying drawing the utility model is done detailed introduction: as shown in Figure 1, the utility model mainly is made of valve body 12, valve gap 5, diaphragm unit, pilot head 1, described valve gap 5 is positioned on the valve body 12, and fixed by hexagon socket cap head screw, and 12 of valve gap 5 and valve bodies are placed with diaphragm unit, and the upper end of valve gap 5 is connected with pilot head 1 by spiral way; Offer groove at this valve gap 5, in be placed with and the contacted large O type circle 6 of valve body 12 end faces, offer groove on the valve body 12, in be placed with and the contacted little O type circle 7 of valve gap 5 end faces, and this two O type circle is in staggered distribution.

Described diaphragm unit is combined pallet 8, diaphragm 9, sealing gasket 10 by rivet 3 by tray 11, and

rivet

3 and 8 on pallet accompany seal washer 4; This pallet 8 is positioned at the shoulder hole 51 of valve gap 5, and shoulder hole 51 connects with pallet 8 and accompanies a spring 2, and an end of this spring 2 contacts with described pallet 8, and its other end contacts with shoulder hole 51 inwalls.

Described diaphragm 9 is made by the polytetrafluoroethylene material; This diaphragm 9 places between valve body 12 and the valve gap 5 along the limit, and the gap about 0.5mm is arranged up and down, is the float extension state.

The advantage of this diaphragm 9 is:

Diaphragm 9 is by the PTFE(polytetrafluoroethylene, being commonly called as King) material is made, the most flowing mediums of this material ability, the medium PTFE material of nearly all rubber material ability can both use, and be not subject to medium influence and produce expansion, contraction or aging, PTFE material high-and low-temperature resistance performance is all fabulous simultaneously, and Applicable scope is extensive.

Diaphragm 9 is not owing to being to be in press seal but to be in quick condition, and pullling with bending when therefore not being subjected to the valve switch action damages, and reaches working life more than 10 times thereby significantly improve.

The primary valve sealing material can be selected as required, the optional various rubber materials of good airproof performance, the good optional PTFE material of gasproof body or liquid medium corrosivity and high and low temperature.

The utility model is not limited to above-mentioned mode of execution; no matter do any variation in its shape or material formation; every employing structural design provided by the utility model all is a kind of distortion of the present utility model, all should think within the utility model protection domain.

Claims

1. floating diaphragm formula solenoid valve, mainly consisted of by valve body (12), valve gap (5), diaphragm unit, pilot head (1), it is characterized in that: described valve gap (5) is positioned on the valve body (12), and fixed by hexagon socket cap head screw, and be placed with diaphragm unit between valve gap (5) and valve body (12), the upper end of valve gap (5) is connected with pilot head (1) by spiral way; Offer groove at this valve gap (5), in be placed with and valve body (12) the contacted large O type circle of end face (6), valve body offers groove on (12), in be placed with and valve gap (5) the contacted little O type circle of end face (7), and this two O type circle is in staggered distribution.

2. floating diaphragm formula solenoid valve according to claim 1, it is characterized in that: described diaphragm unit is combined pallet (8), diaphragm (9), sealing gasket (10) by rivet (3) by tray (11), and accompanies seal washer (4) between rivet (3) and pallet (8); This pallet (8) is positioned at the shoulder hole (51) of valve gap (5), and shoulder hole (51) connects with pallet (8) and accompanies a spring (2), and an end of this spring (2) contacts with described pallet (8), and its other end contacts with shoulder hole (51) inwall.

3. floating diaphragm formula solenoid valve according to claim 1 and 2, it is characterized in that: described diaphragm (9) is made by the polytetrafluoroethylene material; This diaphragm (9) places between valve body (12) and the valve gap (5) along the limit, and the gap about 0.5mm is arranged up and down, is the float extension state.