CN203627987U

CN203627987U - Electromagnetic valve

Info

Publication number: CN203627987U
Application number: CN201320785626.9U
Authority: CN
Inventors: 金红明; 周衍靖; 钟艺
Original assignee: NINGBO LONGTENG HYDRAULIC COMPONENTS Co Ltd
Current assignee: NINGBO LONGTENG HYDRAULIC COMPONENTS Co Ltd
Priority date: 2013-12-04
Filing date: 2013-12-04
Publication date: 2014-06-04
Anticipated expiration: 2023-12-04

Abstract

The utility model discloses an electromagnetic valve and belongs to the technical fields of valves. The electromagnetic valve comprises a valve core; the valve core is glidingly arranged in the inner cavity of a valve bush, and fixedly connected with moving iron through a push rod; the front end of the valve core is provided with a containing part for containing a steel ball; the steel ball is arranged in the containing part, and a valve port is closed by the steel ball; the valve core comprises a first part and a second part; a chute is formed in the second part; the first part is glidingly arranged in the chute; an elastic part is arranged in the chute; one end of the elastic part is fixedly arranged on the second part; the other end of the elastic part is fixedly arranged on the first part. According to the electromagnetic valve disclosed by the utility model, the elastic part is pulled through the first part, with certain initial momentum, of the valve core, and the second part of the valve core is pulled by the elastic part, and therefore the steel ball in the second part of the valve core can be effectively separated from the valve port, and the problem that the valve cannot be opened cannot be generated.

Description

A kind of solenoid valve

Technical field

The utility model relates to valve field, more specifically, relates to a kind of solenoid valve.

Background technique

Tradition electromagnetic valve structure, as Fig. 1, comprises concentrating flux sleeve 1, slides moving iron 3 is set in described concentrating flux sleeve 1 hollow cavity, and in the cavity of concentrating flux sleeve 1, described in interval, moving iron 3 positions are fixedly installed and determine iron 4; Valve pocket 2, described valve pocket 2 is fixed on the front end of described concentrating flux sleeve 1, offers respectively at end and the sidewall of described valve pocket 2 filler opening 20 and the oil outlet 21 that are communicated with valve pocket internal cavity; Coil (accompanying drawing is not shown), described coil is coated on concentrating flux sleeve 1 outside, provides and make described moving iron 3 determine to described the magnetic field that iron 4 moves under coil "on" position; Spool 5, described spool 5 slides and is arranged at the inner chamber of described valve pocket 2, and described spool 5 is affixed with described moving iron 3 by a push rod 6, and described spool 5 front ends have the accommodating part that holds steel ball, and steel ball 50 is set in accommodating part, seal valve port 51 by steel ball 50; Return unit 8, described return unit 8 is arranged at described spool 5 one sides, in order to make described spool 5 have the trend of side shifting backward.

Above-mentioned electromagnetic valve structure due at solenoid valve in when work, filler opening 20 and oil outlet 21 can have larger pressure difference, in the time that solenoid valve is opened, easily generating coil energising electromagnetic force is not enough and cannot make to move iron 3 and pulls steel ball 50 to depart from the problem of valve port 51.The method that increases moving iron 3 pulling force by increasing electromagnetic force is not again fool proof.Therefore being necessary provides a kind of electromagnetic valve structure, the unlatching that realizes solenoid valve that makes it possible to be more prone under the prerequisite that does not increase electromagnetic force.

Summary of the invention

For the deficiencies in the prior art, the utility model provides a kind of solenoid valve, the unlatching that realizes solenoid valve that makes it possible to be more prone under the prerequisite that does not increase electromagnetic force.

The utility model is achieved by the following technical solution: a kind of solenoid valve, comprise concentrating flux sleeve, and in described concentrating flux sleeve hollow cavity, slide moving iron is set, in the cavity of concentrating flux sleeve, described in interval, moving iron position is fixedly installed and determines iron; Valve pocket, described valve pocket is fixed on the front end of described concentrating flux sleeve, offers respectively at end and the sidewall of described valve pocket the filler opening and the oil outlet that are communicated with valve pocket internal cavity; Coil, described coil is coated on concentrating flux sleeve outside, provides and make described moving iron determine to described the magnetic field that iron moves under coil "on" position; Spool, described spool slides and is arranged at the inner chamber of described valve pocket, and described spool is affixed by a push rod and described moving iron, and described spool front end has the accommodating part that holds steel ball, and steel ball is set in accommodating part, seals valve port by steel ball; Return unit, described return unit is arranged at described spool one side, in order to make described spool there is the trend of side shifting backward, described spool comprises First and second, in described second, chute is set, described First slides and is arranged in described chute, in described chute, elastic component is set, described elastic component one end is fixed on described second, and the other end is fixed on described First.

In technique scheme, described elastic component and described return unit are spring.

The utlity model has following beneficial effect: the utility model pulls elastic component by the spool First with certain initial momentum, elastic component pulls second of spool, thereby make the steel ball in second of spool can effectively depart from valve port, the problem that there will not be valve to open.

Accompanying drawing explanation

Fig. 1 is the electromagnetic valve structure schematic diagram in background technique.

Fig. 2 is structural representation of the present utility model.

Fig. 3 is the partial enlarged drawing at A place in Fig. 2.

Embodiment

Below the utility model is described in further detail, preferred in the present embodiment, described elastic component 9 and described return unit 8 are spring.Referring to Fig. 1 to Fig. 3, a kind of solenoid valve, comprises concentrating flux sleeve 1, slides moving iron 3 is set in described concentrating flux sleeve 1 hollow cavity, and in the cavity of concentrating flux sleeve 1, described in interval, slide to arrange and determine iron 4 in moving iron 3 positions; Valve pocket 2, described valve pocket 2 is fixed on the front end of described concentrating flux sleeve 1, offers respectively at end and the sidewall of described valve pocket 2 filler opening 20 and the oil outlet 21 that are communicated with valve pocket internal cavity; Coil (not shown in the accompanying drawings), described coil is coated on concentrating flux sleeve 1 outside, provides and make described moving iron 3 determine to described the magnetic field that iron 4 moves under coil "on" position; Spool 5, described spool 5 slides and is arranged at the inner chamber of described valve pocket 2, and described spool 5 is affixed with described moving iron 3 by a push rod 6, described spool 5 front ends have the accommodating part that holds steel ball, steel ball 50 is set in accommodating part, seal valve port 51 by steel ball 50, described valve port 51 is communicated with described filler opening 20 and oil outlet 21; Return unit 8, described return unit 8 is arranged at described spool 5 one sides, in order to make described spool 5 there is the trend of side shifting backward, described spool 5 comprises and is positioned at the First 53 of the full end of spool and coordinates second 52 with described First, in described second 52, chute 54 is set, described First 53 slides and is arranged in described chute 54, in described chute 54, elastic component 9 is set, described elastic component 9 one end are fixed on described second 52, and the other end is fixed on described First 53.

When the utility model valve is during in closed condition, elastic component 9 is in compressive state, in the time that needs are opened described valve, electromagnetic force drives described moving iron 3, moving iron 3 pulls second 52 of described spool 5, while pulling stroke to reach L1, elastic component 9 is to free state (state that does not stretch and also do not compress), now second 52 has certain initial velocity, continue to pull described elastic component, the stressed stretching of elastic component, and described elastic component pulls First 53, thereby make steel ball 50 depart from valve port 51, due to the drop-down dynamic elasticity part of the situation thering is certain initial momentum, therefore can in the situation that not needing to increase electromagnetic force, realize the unlatching to valve, and the initial compression amount that can control elastic component regulates the size of L1, thereby control the size of initial velocity, assurance can thoroughly make steel ball can depart from valve port 51 reliably.

Claims

1. a solenoid valve, comprises concentrating flux sleeve (1), in described concentrating flux sleeve (1) hollow cavity, slides moving iron (3) is set, and in the cavity of concentrating flux sleeve (1), described in interval, moving iron (3) position is fixedly installed and determines iron (4); Valve pocket (2), described valve pocket (2) is fixed on the front end of described concentrating flux sleeve (1), offers respectively at end and the sidewall of described valve pocket (2) filler opening (20) and the oil outlet (21) that are communicated with valve pocket internal cavity; Coil, described coil is coated on concentrating flux sleeve (1) outside, provides and make described moving iron (3) to described magnetic field of determining iron (4) movement under coil "on" position; Spool (5), described spool (5) slides and is arranged at the inner chamber of described valve pocket (2), and described spool (5) is affixed by a push rod (6) and described moving iron (3), described spool (5) front end has the accommodating part that holds steel ball, steel ball (50) is set in accommodating part, by described steel ball (50) sealing valve port (51); Return unit (8), described return unit (8) is arranged at described spool (5) one sides, in order to make described spool (5) there is the trend of side shifting backward, it is characterized in that: described spool (5) comprises First (53) and second (52), in described second (52), chute (54) is set, described First (53) slides and is arranged in described chute (54), elastic component (9) is set in described chute (54), described second (52) are fixed in described elastic component (9) one end, and the other end is fixed on described First (53).

2. a kind of solenoid valve as claimed in claim 1, is characterized in that: described elastic component (9) and described return unit (8) are spring.