CN201344265Y

CN201344265Y - Normally closed solenoid valve

Info

Publication number: CN201344265Y
Application number: CNU2009201420391U
Authority: CN
Inventors: 王高翔; 蒋可贞
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-15
Filing date: 2009-03-15
Publication date: 2009-11-11
Anticipated expiration: 2019-03-15

Abstract

The utility model discloses the manufacturing technology of normally closed solenoid valves, which aims to overcome the defect in the prior like products such as inconvenient disassembly and assembly. The normally closed solenoid valve comprises a valve body, a valve cover, an electromagnetic coil and an iron core. An air inlet and an air outlet are formed at two ends of the valve body; and the inner cavity of the valve body is provided with a valve port; a guide sleeve is arranged outside the iron core, and a sealing gasket is arranged at the lower end of the iron core and corresponds to the axial direction of the valve port; a circular step is arranged at the lower end of the guide sleeve and is embedded in a platform sediment cavity corresponding to the valve body; the valve cover connected with the valve body is fixed on the upper end surface of the circular step of the guide sleeve; and a groove passes through the axial surface of the iron core. A flange is formed at the lower end port of the iron core; and a spring is arranged between the flange of the iron core and the circular step of the guide sleeve. The normally closed solenoid valve plays a better positioning role after the circular step at the lower end of the guide sleeve is embedded in the platform sediment cavity corresponding to the valve body, so as to ensure the sealing performance after the assembly and facilitate the improvement of the sensitivity and the stability of the solenoid valve during the working process.

Description

A kind of normally closed solenoid valve

Technical field

The utility model relates to a kind of solenoid valve product manufacturing technology, especially refers to the connection structure of solenoid valve iron core guide pin bushing and valve body.

Background technique

Solenoid valve is a kind of very common electronic control unit, its structure and of a great variety, but its operating principle is all the same substantially, promptly at electrical signal of control circuit input, solenoid valve is interior with regard to magnetic signal of corresponding generation, this magnetic signal DM core produces an action, utilizes electromagnetic force to open or throttle down.This type of comparatively typical product such as State Intellectual Property Office on May 3rd, 2006 notice of authorization, the patent No. is called " solenoid valve with split type valve seat " utility model patent for the ZL200520100112.0 name, it " comprises that the coil that is positioned at the sleeve pipe upper/lower terminal and valve seat, shutoff are at the end socket of sleeve pipe upper end be positioned at the core iron parts of sleeve pipe; described valve seat adopts inner inlaying with the outside to form ... when the processing valve base cavity; tool wear is little; burr easily removes, the bigger work efficiency that improved." in actual applications; reasons such as the solenoid valve product is numerous in the body cavity pipeline, latus rectum is not of uniform size are gathered foreign material easily and are needed regular cleaning; the rubber seal that replacing simultaneously is easily aging; but the valve seat of above-mentioned ZL200520100112.0 product inside and outside are adopted riveted joint or are welded; and it is inconvenient to dismantle and assemble, and long-time use makes the sensitivity and the reliability decrease of solenoid valve product easily.

The model utility content

The technical problems to be solved in the utility model is to overcome dismounting and inconvenient defective and the deficiency of assembling that existing like product exists, provide a kind of valve gap, iron core member dismounting and easy to assembly to society, the easy cleaned normal close type solenoid valve of body cavity product is to ensure the sensitivity and the reliability of the work of solenoid valve product.

The technological scheme that its technical problem that solves the utility model adopts is: normally closed solenoid valve comprises valve body, valve gap, electromagnetic coil and iron core, and described valve body two ends are provided with suction port and air outlet, and inner chamber is provided with valve port; Described iron core is provided with guide thimble outward, and the lower end is provided with sealing gasket, and described sealing gasket is axially corresponding with described valve port; Described guide thimble lower end is established annular steps and is embedded in the corresponding heavy stand of the described valve body chamber, and the annular steps upper-end surface of described guide thimble is fixed with the valve gap that is connected with described valve body; The axial surface of described iron core is penetrated with groove.

Described iron core lower end mouth is provided with flange, establishes spring between described mandrel flange and the described guide thimble annular steps.

The utility model normally closed solenoid valve unloads electromagnetic coil earlier when using a period of time to clean, turn on fixing valve gap screw, mention valve gap, can take out guide thimble and iron core successively, body cavity is cleaned.During assembling, this product orientation sleeve pipe lower end annular steps has played positioning action after being embedded in the corresponding heavy stand of valve body chamber, can guarantee that the axial position of guide thimble inner chamber iron core axis and valve port is corresponding to the same, sealability after guaranteeing to assemble improves the sensitivity and the stability of solenoid valve work.Compare than existing product, have be skillfully constructed, simple in structure, convenient and practical advantage.

Description of drawings

Fig. 1 is the utility model off-position structural representation.

Embodiment

As shown in Figure 1, the utility model normally closed solenoid valve comprises valve body 1, valve gap 2, electromagnetic coil 3 and iron core 4, and described valve body 1 two ends are provided with suction port 5 and air outlet 4, and inner chamber is provided with valve port 11; Be provided with guide thimble 10 outside the described iron core 4, described guide thimble 10 lower ends are established annular steps 9 and are embedded in the valve body 1 corresponding heavy stand chamber, and annular steps 9 upper-end surfaces of described guide thimble 10 are fixed with the valve gap 2 that is connected with valve body 1; Described iron core 4 lower ends are provided with sealing gasket 6, and described sealing gasket 6 is axially corresponding with described valve port 11; The axial surface of described iron core 4 is penetrated with groove 12, and lower end mouth is provided with flange 7, establishes spring 8 between described iron core 4 flanges 7 and described guide thimble 10 annular steps 9.

Continue in conjunction with the accompanying drawings the working principle of summary the utility model product below.During off-position, described iron core 4 is done spring 8 effects, by the sealing gasket 6 that its lower end links to each other described valve port 11 is closed as shown in Figure 1.After electromagnetic coil 3 energisings, move on the described iron core 4 and open valve port 11, conducting between suction port 5 and the air outlet 4.This product uses when needing to clean after a period of time, unloads electromagnetic coil 3 earlier, turns on fixedly the screw 13 of valve gap 2 and mentions valve gap 2, can take out guide thimble 10 and iron core 4 successively, and valve body 1 inner chamber is cleaned.During assembling, after the described guide thimble 10 lower end annular steps 9 of this product are embedded in valve body 1 corresponding heavy stand chamber, the axial position that can guarantee described guide thimble 10 inner chamber iron cores, 4 axis and valve port 11 is corresponding to the same, sealability after guaranteeing to assemble improves the sensitivity and the stability of solenoid valve work.

Claims

1, a kind of normally closed solenoid valve comprises valve body (1), valve gap (2), electromagnetic coil (3) and iron core (4), and described valve body (1) two ends are provided with suction port (5) and air outlet (4), and inner chamber is provided with valve port (11); Described iron core (4) is outer to be provided with guide thimble (10), and the lower end is provided with sealing gasket (6), and described sealing gasket (6) is axially corresponding with described valve port (11); It is characterized in that: described guide thimble (10) lower end is established annular steps (9) and is embedded in the corresponding heavy stand of described valve body (1) chamber, and annular steps (9) upper-end surface of described guide thimble (10) is fixed with the valve gap (2) that is connected with described valve body (1); The axial surface of described iron core (4) is penetrated with groove (12).

2, normally closed solenoid valve according to claim 1, it is characterized in that: described iron core (4) lower end mouth is provided with flange (7), establishes spring (8) between described iron core (4) flange (7) and described guide thimble (10) annular steps (9).