CN201344279Y

CN201344279Y - Diaphragm type solenoid valve with large flow capacity

Info

Publication number: CN201344279Y
Application number: CNU2009201419939U
Authority: CN
Inventors: 王高翔; 蒋可贞; 盛志明
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-10
Filing date: 2009-03-10
Publication date: 2009-11-11
Anticipated expiration: 2019-03-10

Abstract

The utility model discloses a diaphragm type solenoid valve with large flow capacity, which aims to overcome the defects in the prior like products such as large withstand voltage fluctuation range and bad product stability. The diaphragm type solenoid valve with large flow capacity comprises a valve body, a valve cover, an electromagnetic coil and an iron core. A sealing rubber gasket is arranged at the lower end of the iron core, and an inner cavity at the upper end of the iron core is provided with a spring; an elastic diaphragm is arranged between the valve body and the valve cover; a bushing and a sealing ring are respectively fixed on the upper end surface and the lower end surface of the elastic diaphragm; a reset spring is arranged between the center of the bushing and the inner wall of the valve cover; a pilot valve port is fixedly formed in the valve cover in the position corresponding to the lower part of the sealing rubber gasket; and the inner cavity of the pilot valve port is communicated with an exhaust port formed at the lateral part of the valve cover. A throttle air duct is connected between the valve body and the inner cavity of the valve cover. The diaphragm type solenoid valve with large flow capacity has the advantages of skilful concept, stable performance and high sensitivity, and effectively ensures consistent sealing degree of the pilot valve; and after the electromagnetic coil is electrified, the valve port of the valve body can quickly be closed.

Description

The big flow solenoid valve of diaphragm type

Technical field

The utility model relates to a kind of gas control component manufacturing technology, refers to that especially the valve port of diaphragm electromagnetic valve opens and closes sealing configuration.

Background technique

Solenoid valve is a kind of very common control unit, and it utilizes electromagnetic force to open or throttle down, has pneumatic and two types of hydraulic pressure.Its structure and kind are very many, but operating principle is all the same substantially, and promptly at electrical signal of control circuit input, with regard to magnetic signal of corresponding generation, this magnetic signal DM produces an action in the solenoid valve, and the switching of valve just produces a correspondence.This series products comparatively typical as State Intellectual Property Office in notice of authorization on February 21st, 2007, the patent No. is called " diaphragm electromagnetic valve " utility model patent for the ZL200620100262.6 name, it " have the cavity that forms by the assembling of valve gap and valve seat; in this cavity, be provided with the valve port between medium inlet and media outlet; a diaphragm that can produce deformation over against described valve port is divided into epicoele and cavity of resorption with described cavity; ... because the edge of the diaphragm of this structure is in free state, thereby can be issued to the technical requirements of big flow in the simple prerequisite of assurance diaphragm structure ".But applicant is by application in practice and research and analyse discovery, and this product is followed diaphragm and moved up and down owing to the core component that will play guide's effect directly is arranged on the diaphragm; Again because the sealing gasket of electromagnetism core iron lower end also is along with core iron moves up and down, so the coaxality of difficult sealing to be consistent when mandrel and sealing gasket offset, the pressure resistance wave range that causes this product thus greatly, product stability is poor.

The model utility content

The technical problems to be solved in the utility model is to overcome that the pressure resistance wave range that existing like product exists is big, the defective and the deficiency of product stability difference, provide a kind of pressure resistance wave range little to society, the big flow solenoid valve product of the diaphragm type that product stability is good effectively improves the quality and the class of air-operated solenoid valve product.

The technological scheme that its technical problem that solves the utility model adopts is: the big flow solenoid valve of diaphragm type comprises valve body, valve gap, electromagnetic coil and iron core, and described iron core lower end is provided with seal rubber pad, and the upper end inner chamber is provided with spring; Be embedded with flexible sheet between described valve body and the described valve gap; The upper and lower end face of described flexible sheet is fixed with lining and seal ring respectively, is provided with Returnning spring between described lining center and the described valve gap inwall; Position corresponding to described seal rubber pad below in the described valve gap is fixed with poppet port, and described poppet port inner chamber is communicated in the relief opening of described valve gap sidepiece.Be connected with the throttling air flue between described valve body and the valve gap inner chamber.

The big flow solenoid valve of the utility model diaphragm type, poppet port is fixedly set in the valve gap inner chamber; Iron core is subjected to the electromagnetic force effect and when moving up and down, closes or open poppet port under the guiding of overlapping exactly in electromagnetic coil, has guaranteed the conformity of poppet port seal degree; In electromagnetic coil when outage,, seal rubber pad is closed poppet port, and flexible sheet is by the Returnning spring bowing downwards fast on self elasticity and the lining, and the valve body valve port reacts very sensitive rapidly.Compare than existing product, this product have be skillfully constructed, stable performance and sensitive high advantage.

Description of drawings

Fig. 1 is embodiment's one "on" position structural representation.

Fig. 2 is embodiment's two "on" position structural representations.

Embodiment

As shown in Figure 1, the big flow solenoid valve of the utility model diaphragm type comprises valve body 1, valve gap 2, electromagnetic coil 3 and iron core 15, and described iron core 15 lower ends are provided with seal rubber pad 14, and upper end inner chamber 18 is provided with spring 16, and axially side is penetrated with groove 17.Be embedded with flexible sheet 8 between described valve body 1 and the described valve gap 2 and isolate, the described valve body 1 of described flexible sheet 8 belows is provided with suction port 5 and air outlet 4; The upper and lower end face of described flexible sheet 8 is fixed with lining 19 and seal ring 7 respectively by bolt 6, is provided with Returnning spring 10 between described lining 19 centers and described valve gap 2 inwalls.Be connected with throttling air flue 11 between described valve body 1 and the valve gap 2.Position corresponding to described seal rubber pad 14 belows in the described valve gap 2 is fixed with poppet port 13, and described poppet port 13 inner chambers are communicated in the relief opening 9 of described valve gap 2 sidepieces through transverse air channel.

Figure 2 shows that the utility model embodiment two "on" position structural representations, be that with embodiment one the main distinction power of described electromagnetic coil 3 is different, formed the series product of different parameters index thus.Other structure characteristic is with shown in Figure 1, at this section repeated description no longer.

Continue in conjunction with the accompanying drawings the working principle of summary the utility model product below.When electromagnetic coil 3 energisings, described iron core 15 overcomes spring 16 elastic force and moves up, and seal rubber pad 14 is opened poppet port 13.The air pressure that is entered valve body 1 inner chamber by suction port 5 enters flexible sheet 8 tops through throttling air flue 11, again by the uptake ventilator 12 in the valve gap 2 via poppet port 13, from relief opening 9 releases.At this moment, between flexible sheet 8 upper and lower end faces, form pressure reduction, flexible sheet 8 upwards bowings, seal ring 7 is opened the valve port 20 of described valve body 1, forms big flow air flue between suction port 5 and the air outlet 4.When electromagnetic coil 3 outages, 16 resiliences of described iron core 15 end springs, iron core 15 moves down, seal rubber pad 14 is closed poppet port 13, pressure reduction disappears between flexible sheet 8 upper and lower end faces, and the Returnning spring 10 between lining 19 and valve gap 2 inwalls is unfolded, and makes flexible sheet 8 bowing downwards fast, seal ring 7 is closed described valve body 1 valve port 20 rapidly, reacts very sensitive.

Claims

1, the big flow solenoid valve of a kind of diaphragm type comprises valve body (1), valve gap (2), electromagnetic coil (3) and iron core (15), and described iron core (15) lower end is provided with seal rubber pad (14), and upper end inner chamber (18) is provided with spring (16); Be embedded with flexible sheet (8) between described valve body (1) and the described valve gap (2); It is characterized in that: the upper and lower end face of described flexible sheet (8) is fixed with lining (19) and seal ring (7) respectively, is provided with Returnning spring (10) between described lining (19) center and described valve gap (2) inwall; Position corresponding to described seal rubber pad (14) below in the described valve gap (2) is fixed with poppet port (13), and described poppet port (13) inner chamber is communicated in the relief opening (9) of described valve gap (2) sidepiece.

2, the big flow solenoid valve of diaphragm type according to claim 1 is characterized in that: be connected with throttling air flue (11) between described valve body (1) and valve gap (2) inner chamber.