CN201116606Y

CN201116606Y - Solenoid valve

Info

Publication number: CN201116606Y
Application number: CNU2007200762424U
Authority: CN
Inventors: 罗福军
Original assignee: SHANGHAI OK SOLENOID VALVE MANUFACTURER CO Ltd
Current assignee: SHANGHAI OK SOLENOID VALVE MANUFACTURER CO Ltd
Priority date: 2007-11-15
Filing date: 2007-11-15
Publication date: 2008-09-17
Anticipated expiration: 2017-11-15

Abstract

The utility model relates to an electromagnetic valve, which comprises an electromagnetic coil, a valve body and a valve core, wherein the electromagnetic coil comprises a lacquering coil and a coil case, the valve body comprises a magnetic insulation tube and a valve cover, the valve core comprises a dynamic magnetic core, a spring, a piston and a guiding rod, the electromagnetic coil is connected with the magnetic insulation tube at the top of the valve body, the valve core is arranged in the valve body, the utility model further comprises a hand-operated controller which comprises a mounting axle sleeve, a rotary shaft, a handle and a fixing pin, and the hand-operated controller is connected with the valve cover. Compared with the prior art, the utility model can process on-site switch control of electromagnetic valve, with on-site emergence operation function, improved safety and practicality, saved cost, improved application range and easy maintenance.

Description

A kind of solenoid valve

Technical field

The utility model relates to control valve, especially relates to a kind of solenoid valve.

Background technique

At present, the solenoid valve of domestic most producers all is simple automatically controlled, does not have manual overvide, in a single day not a kind of solenoid valve breaks down, the automatic control system of pipeline must be stopped running or part is stopped running, and carries out rush repair then, influences system's operation; Not a kind of solenoid valve can't carry out the shortcoming of field adjustable operation in addition; Bypass all will be designed in the internally piloted valve installation place during general circuit design, but in that the space is limited in some cases, and in the time of can't considering bypass, not a kind of solenoid valve is will hidden danger bigger at all.

At present only a kind of with manual be often to open with manual solenoid valve (also being emergency cut-off magnetic valve), but this often open with manual solenoid valve be used in specially the occasion that safe emergency cuts off (such as: the gas emergency cut-off device), it is in opening state always under normal situation, move after only just sending the energising shutdown signal by the safe early warning sniffer when potential safety hazard takes place, application area is very narrow.

Summary of the invention

The purpose of this utility model is exactly the solenoid valve that a kind of applied range, high safety are provided for the defective that overcomes above-mentioned prior art existence.

The purpose of this utility model can be achieved through the following technical solutions: a kind of solenoid valve, comprise electromagnetic coil, valve body, spool, it is characterized in that, described electromagnetic coil comprises enameled wire loop, coil case, described valve body comprises plunger tube, valve gap, described spool comprises moving magnetic core, spring, piston, guide rod, and described electromagnetic coil is connected with the plunger tube at valve body top, and described spool is located in the valve body; Also comprise manual overvide, this manual overvide comprises installs axle sleeve, running shaft, handle, fixing pin, and described manual overvide is connected with valve gap.

The front end of described running shaft is semi-cylindrical.

The radial height of described running shaft is greater than the distance in moving magnetic core lower sealing surface and pilot valve hole.

Compared with prior art, solenoid valve of the present utility model has the following advantages:

1. using scope is wide: solenoid valve of the present utility model is used very extensive, and it almost can apply to all being fit to and select for use on the industrial control pipeline of solenoid valve;

2. safe and reliable, practical: as, when need take emergency measures in the scene, can to carry out artificial open and close operation to solenoid valve at the scene when control system or solenoid valve itself break down;

Conserve space, save cost: in the limited occasion of installing space, the design pipeline can not installed bypass and also can be effective when adopting this solenoid valve, also can save bypass under normal situation, save the cost of several manually operated valves and one section bypass duct;

4. it is convenient to install, debug, overhaul: the scene can manually be controlled, and is convenient, flexible.

Description of drawings

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

Fig. 2 is the structural representation of manual overvide among Fig. 1.

Embodiment

The utility model is described in further detail for the contrast drawings and the specific embodiments below.

As Fig. 1～shown in Figure 2, a kind of solenoid valve, comprise valve body 1, spool, packing ring 9, electromagnetic coil 10, packing ring 11, screw 12, manual overvide 13, described valve body 1 comprises valve gap 6, plunger tube 8, described spool comprises guide rod 2, spool lower seal 3, valve core spring 4, spool side sealing circle 5, moving magnetic core 7, piston 14, described electromagnetic coil 10 comprises enameled wire loop, coil case, described manual overvide 13 comprises running shaft 131, seal ring 132, axle sleeve 133 is installed, Fixed latches 134, handle 135, described electromagnetic coil 10 is connected with the top plunger tube 8 of valve body 1, described spool is located in the valve body 1, described manual overvide 13 is connected with valve gap 6 parts, and running shaft 131 front ends of manual overvide 13 parts are semi-cylindrical.

The horizontal ends of the semicolumn of running shaft 131 faces down when needing closed electromagnetic valve, circular arc upwards, the plane of structure height of rotating shaft head is for minimizing, and moving magnetic core 7 lower sealing surface are blocked the pilot valve hole, and the fluid that piston 14 epicoeles can obtain and the filling of pressure are in closed condition to guarantee valve; Operating grip 135 rotates running shaft 131, reach the maximum radius state of running shaft 131, and the radial height of running shaft 131 is higher than the distance in moving magnetic core 7 lower sealing surface and pilot valve hole, the pilot valve hole is communicated with the outlet of solenoid valve, the pressure of piston 14 epicoeles is drained, 14 times cavity pressures of piston are greater than epicoele, and the pressure that piston of electromagnetic valve 14 is entered the mouth is upwards pushed open.

Claims

1. solenoid valve, comprise electromagnetic coil, valve body, spool, it is characterized in that, described electromagnetic coil comprises enameled wire loop, coil case, described valve body comprises plunger tube, valve gap, described spool comprises moving magnetic core, spring, piston, guide rod, and described electromagnetic coil is connected with the plunger tube at valve body top, and described spool is located in the valve body; Also comprise manual overvide, this manual overvide comprises installs axle sleeve, running shaft, handle, fixing pin, and described manual overvide is connected with valve gap.

2. a kind of solenoid valve according to claim 1 is characterized in that the front end of described running shaft is semi-cylindrical.

3. a kind of solenoid valve according to claim 1 is characterized in that, the radial height of described running shaft is greater than the distance in moving magnetic core lower sealing surface and pilot valve hole.