CN2339820Y

CN2339820Y - Secondary-open type electromagnetic valve

Info

Publication number: CN2339820Y
Application number: CN 98209749
Authority: CN
Inventors: 吕增海; 金荣昌; 黄松炎; 曾建军
Original assignee: Sanhua Group Co Zhejiang Prov
Current assignee: Zhejiang Sanhua Group Corp., Ltd.
Priority date: 1998-04-22
Filing date: 1998-04-22
Publication date: 1999-09-22
Anticipated expiration: 2008-04-22

Abstract

The utility model relates to a secondary-open type electromagnetic valve, composed of a valve body component and a coil component. A valve core and a core iron are positioned on a valve port in a valve body. The lower part of the valve core is provided with a lower seal plug. Moreover, the lower part of the core iron is provided with an upper sealing plug. Thus, a soft seal structure of the valve port is formed. The utility model has the advantages of simple structure, convenient operation, reliable sealing performance long service life, convenient processing and assembling, reliable low pressure open, etc.

Description

Secondary opening formula solenoid valve

The utility model relates to a kind of switch gear that is used for air bells conditioner fluid line break-make, the valve of break-make control is carried out in especially a kind of electricity consumption.

Existing secondary opening formula solenoid valve all is imported product basically, and what its valve body adopted is monolithic construction, is mounted with spool and core iron in the valve body successively, then adopts between them and has plenty of the hard sealing structure pattern.The solenoid valve of this structural type exists manufacturing to require characteristics such as height, poor sealing performance; And this solenoid valve need overcome the spring force and the core iron deadweight of returning spring when opening, and so just needs the proper functioning that bigger pressure reduction could guarantee solenoid valve.Therefore the power of its consumption is bigger, moves reliable inadequately.

The purpose of this utility model is in order to overcome the deficiency of above-mentioned existence, and a kind of good sealing effect is provided, and the internal leakage amount is low, and low-pressure opening is reliable, and difficulty of processing reduces, small-sized secondary opening formula solenoid valve easy to assembly.

The purpose of this utility model is finished by following technical solution, it mainly is made up of valve body parts and coil component, valve body parts includes core iron, return spring and the spool in valve body, the valve body, and coil component includes magnet case, enameled cable winding, spool is positioned at the top of valve body valve port, be provided with the lower seal plug in the bottom of this spool, and the core iron bottom that is positioned at spool top is provided with sealing plug.

The utility model has one to make the spring that moves on the spool in the positioned beneath of described valve body inner spool.

Valve body described in the utility model is in addition cooperated up and down by upper valve body and following valve body and forms.

Accompanying drawing is a structural representation of the present utility model.

To be described in detail the utility model by accompanying drawing below: the utility model mainly is made up of valve body parts and coil component.Valve body parts includes valve body 1, is placed in spool 2, return spring 3 and core iron 4 in the valve body; Coil component includes magnet case 5 and enameled cable winding 6.Be mounted with spool 2 and core iron 4 successively on the valve port 7 in the valve body 1, and valve body 1 is combined up and down by upper valve body 8 and following valve body 9, it not only can make the difficulty of processing of valve body reduce, and easy to assembly, realizes easily producing in enormous quantities.Described valve port is being communicated with discharge connection 10 7 times, on be communicated in the entrance sleeve 11 that is positioned at a side.Be mounted with the spool 2 that is pressed with spring 12 on the valve port 7, utilize this spring 12 can realize solenoid valve proper functioning under the situation of zero pressure difference.In the middle of spool 2, offer through hole 13, and offer the equalizing orifice 14 that is communicated with import and spool epicoele at avris, and lower seal plug 15 is arranged at its underpart device, and when spool 2 tightly suppresses valve port 7, its lower seal plug 15 is pushed down on the protruding circle of valve port 7, realizes the periphery sealing of valve port.Be socketed with a sleeve pipe 16 above the upper valve body 8, be placed with core iron 4 moving up and down in the sleeve pipe, be equipped with a return spring 3 above this core iron 4, it can make core iron 4 move down and tightly suppress spool 2.Be provided with sealing plug 17 in the bottom of core iron 4, sealing plug 17 seals up the intermediate throughholes 13 of spool 2 when core iron 4 is pushed down spool 2 on this.Describedly go up sealing plug 17 and lower seal plug 15 is all made with rubber material, thereby constituted the soft sealing structure of valve port, it can solve big and the problem that can't long-term stable operation of internal leakage well.The utility model is provided with end socket 18 at the top of sleeve pipe 16, is fixed with the coil rack 20 of being with enameled cable winding 6 with screw 19, also is fixed with magnet case 5 simultaneously, and carries out solid envelope with epoxide resin encapsulation material 21.

Working procedure is: when coil electricity, the solenoid valve of its generation is made every effort to overcome the power of clothes return spring 3, core iron 4 deadweight and act on the fluid pressure difference power of sealing plug 17 and spool 2 through holes 13 sealing surfaces, core iron 4 is sucted, through hole 18 is opened, the interior air-flow of spool 2 epicoeles this moment flows to discharge connection 10 by through hole 13 rapidly, entrance sleeve 11 air-flows replenish by the equalizing orifice on the spool 2 14 rapidly, but because through hole 13 cross-section areas are more much bigger than the cross-section area of equalizing orifice 14, spool 2 upper cavity pressures reduce rapidly, spool 2 is subjected to, cavity of resorption difference force and spring 12 restoring forces and be brought to, valve port 7 is opened.

When coil losing electricity, core iron 4 falls because of the restoring force effect of deadweight and return spring 3, closes through hole 13, and the power that the effect of the deadweight of spool 2 and return spring 3 restoring forces at this moment overcomes spring 12 falls spool 2, and valve port 7 is closed.

The utility model compared with prior art has simple in structurely, easy to use, and difficulty of processing reduces greatly, Easy to assembly, easily realize producing in enormous quantities, long service life, the internal leakage amount is low, and switch is flexible, and can be real The characteristics such as work in the situation of existing zero pressure difference.

Claims

1, a kind of secondary opening formula solenoid valve of being made up of valve body parts and coil component, valve body parts include spool, return spring and the core iron in valve body, the valve body; Coil component includes magnet case, enameled cable winding, it is characterized in that described spool (2) bottom that is positioned at valve port (7) top is provided with lower seal plug (15), and core iron (4) bottom that is positioned at spool (2) top is provided with sealing plug (17).

2, secondary opening formula solenoid valve as claimed in claim 1, the bottom that it is characterized in that described spool (2) is mounted with one makes the spring (12) that moves on the spool (2).

3, secondary opening formula solenoid valve as claimed in claim 1 or 2 is characterized in that described valve body (1) is cooperated up and down by upper valve body (8) and following valve body (9) to form.