CN201606503U

CN201606503U - Pilot electromagnetic valve

Info

Publication number: CN201606503U
Application number: CN2010201273145U
Authority: CN
Inventors: 连超燕; 王朝阳; 祝云霞
Original assignee: NINGBO HUACHENG VALVE CO Ltd
Current assignee: NINGBO HUACHENG VALVE CO Ltd
Priority date: 2010-03-09
Filing date: 2010-03-09
Publication date: 2010-10-13
Anticipated expiration: 2020-03-09

Abstract

The utility model discloses a pilot electromagnetic valve. The pilot electromagnetic valve comprises a valve body; a valve rod is arranged in the valve body; a main valve core is arranged under the valve rod and matched with a valve port; a diaphragm is fixed on the valve rod to divide the valve body into an upper cavity and a lower cavity, the upper cavity is connected with the outlet of the electromagnetic valve, the inlet of electromagnetic valve is connected with a division port at the lower part of the valve body through a channel, channels above and under the diaphragm are communicated with the outlet of the electromagnetic valve through the electromagnetic valve core. A manual switch is arranged on the valve body and is characterized in that the manual switch is independently arranged at the top right corner of the valve body and is connected in the upper cavity of the valve body in a threaded way, thereby the valve body is prevented from secondary pollution; the manual switch is simple in structure, without any influence on the service lives and the performances of the electromagnetic valve and the valve body.

Description

Guide electromagnetic valve

Technical field

The utility model relates to a kind of guide electromagnetic valve.

Background technique

In the large-scale farm abroad,, water, apply fertilizer because area is big, scope is wide, spraying insecticide needs great amount of manpower, even flourishing country, though waterway pipe all has distribution, the switch of control valve still needs manually to finish; Also in order to keep the conformity of crops growth, a kind of guide electromagnetic valve that can the telecontrol valve switch is arranged, can carry out remote operation by timing, relay, probe or any device of solenoid valve that can excite, thereby reach the purpose of the valve of opening and closing simultaneously, make the crops obtain same growth conditions, this valve also can be widely used in fire-fighting, spray water system, also is applicable to pneumatic, hydraulic pressure and food processing machinery automatic controller system.

As the patent No. is 200820170269.4 1 kinds of guide electromagnetic valves, it includes valve body, spool, valve rod, solenoid valve, wherein valve body has import and outlet respectively, the valve seat cooperation is equipped with main valve plug in valve body, the valve body inner cavity is divided into epicoele and cavity of resorption by the valve assemblies on the valve rod, be supported with spring between above in valve assemblies and the valve body, equalizing orifice in the valve rod is provided with the guiding thimble, the lower end of valve rod is equipped with flow control member, cooperate with the guiding thimble, realize the connection of epicoele and cavity of resorption, and epicoele also is communicated with guide's cavity of solenoid valve by pilot hole, guide's cavity is communicated with outlet on the valve body by the cascading water hole, and, the spool of electromagnetic valve is closed or is opened with the cascading water hole and cooperates, the valve body side seal is provided with rotary switch, the rotary switch inner end is to conflict or break away to cooperate with the spool bottom surface, it is characterized in that the valve rod on the main valve plug is connected with valve body operation piece outward directly or indirectly, it can control the main valve switch by operation piece, can control the main valve switch by emergency cock again, rational in infrastructure, the defective of its existence is that rotary switch is opened spool by force, if outlet pressure arm upper cavity pressure is big, may cause that aqueous reflux gets back to epicoele, and then get back to into Shui Chu, cause secondary pollution, and to utilize eccentric wheel be to conflict or break away to cooperate with the spool bottom surface repeatedly in this rotary switch inner end, and friction may damage spool and then influence the effect of spool electromagnetism and the normal use and the life-span of solenoid valve for a long time, further improvement.

The model utility content

Technical problem to be solved in the utility model is the present situation at prior art, and a kind of secondary pollution, simple in structure and can not influence the guide electromagnetic valve of solenoid valve and valve body working life and performance as far as possible of avoiding is provided.

The utility model solves the problems of the technologies described above and the technological scheme that adopts is: a kind of guide electromagnetic valve, include valve body, wherein in the valve body valve rod is arranged, valve rod is arranged with the main valve plug that cooperates with valve rod, be fixed with valve on the valve rod, this valve is divided into upper chamber and lower chambers with valve body, upper chamber links to each other with the outlet of solenoid valve, the import of solenoid valve links to each other by passage with the split-flow opening of valve body lower end, valve has individual path up and down, and this path is communicated with electromagnetic valve outlet by electromagnetic valve core, also is provided with hand switch on the valve body, it is characterized in that: this hand switch is arranged on the upper right corner of valve body separately, and is threaded in the upper chamber of valve body.

As improvement, be provided with seal ring between described hand switch and the valve body.

As improvement, the passage that the import of described solenoid valve links to each other with the split-flow opening of valve body lower end is a pipe passage.

As improvement, the middle below of described valve rod is provided with a spring, and an end of this spring withstands on the upper-end surface of main valve plug, main valve plug is remained seal up valve port trend.

As improvement, described valve is clipped between punch holder and the die holder, and is fixed on the upper end portion of valve rod by nut.

As improvement, described valve rod is divided into two chambers with lower chambers, a sealed chamber and an open chamber.

As improvement, described open chamber communicates with the outlet on valve body right side.

As improvement, be provided with weep hole under the described solenoid valve, this weep hole is communicated with upper chamber by the applying of electromagnetic valve core.

Compared with prior art, advantage of the present utility model is: hand switch is arranged on the upper right corner of valve body separately, and be threaded in the epicoele of valve body, make its rotation hand switch when outage, open main valve plug fast, use also need not influence the working life and the performance of solenoid valve and valve body for a long time, effectively prevented secondary pollution, and it is simple in structure, easily manufactured, the passage that the import of solenoid valve links to each other with the split-flow opening of valve body lower end is a pipe passage, the through hole of pipe passage is bigger, can prevent to cause valve invalidation because pesticide powder or other pollutants are blocked pipeline, be provided with seal ring between hand switch and the valve body, the liquid when having prevented from not use hand switch or the leakage of gas, and build-up of pressure is poor, be provided with drain opening under the solenoid valve, being provided with separately of this drain opening further prevented secondary pollution.

Description of drawings

Fig. 1 is the utility model structure sectional view;

Fig. 2 is the structure sectional view after the utility model energising.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As a kind of guide electromagnetic valve as described in Fig. 1～2, include valve body 1, wherein in the valve body 1 valve rod 2 is arranged, valve rod 2 is arranged with the main valve plug 3 that cooperates with valve port, valve rod 2 tops are provided with valve 4, this valve 4 is clipped between punch holder 5 and the die holder 6, and be fixed on the upper end portion of valve rod 2 by nut 7, all extend to the left and right sides in being embedded into valve body 1 at the two ends of described valve 4, and valve body 1 is divided into upper chamber 8 and lower chambers, described lower chambers is divided into two chambers by valve rod 2 again, i.e. a sealed chamber 9 and an open chamber 10, sealed chamber 9 is adjacent with upper chamber 8, open chamber 10 communicates with the outlet 11 on valve body 1 right side, the middle part of valve rod 2 is provided with seal ring 12, described main valve plug 3 comprises pressure cap 13 and sealing gasket 14, the middle and lower part of pressure cap 13 is fixed and be embedded in to sealing gasket 14, there are a spring 15 1 ends to withstand on the upper-end surface of pressure cap 13, the other end of this spring 15 is conflicted at the top of open chamber 10, directly over valve rod 2, be provided with connecting rod 16, this connecting rod 16 is to be threaded with valve body 1, connecting rod 16 is provided with handwheel 17, rotation by handwheel 17, driving connecting rod 16 rises or descends and then promotion valve rod 2, main valve plug 3 is closed, be provided with O type circle 18 at the middle part of connecting rod 16, prevent the leakage of liquid or gas, the upper left corner at valve body 1 is provided with solenoid valve, the outlet 19 of this solenoid valve links to each other with upper chamber 8, the import 23 of solenoid valve is connected by pipeline 22 passages with the split-flow opening 21 of valve body 1 lower end, because the through hole of pipeline 22 passages is bigger, can prevent that pesticide powder or other dirts from blocking pipeline and causing valve invalidation, this product is specially adapted to plumbing drain, described valve 4 has individual path up and down, this path is communicated with electromagnetic valve outlet 19 by electromagnetic valve core 26, under solenoid valve, be provided with weep hole 24, this weep hole 24 is realized being communicated with upper chamber 8 by the applying of electromagnetic valve core 26, place, the upper right corner at valve body 1 also is provided with a hand switch 27 separately, this hand switch 27 is threaded in the upper chamber 8 of valve body 1, between hand switch 27 and valve body 1, also be provided with seal ring 28, sealing circle 28 closely cooperates hand switch 27 and valve body 1, prevents to leak.

Working principle of the present utility model:

Under electromagnetic coil 25 cold situations (as shown in Figure 1), because valve 4 has pipeline to link to each other up and down, pressure balance on the valve 4, under the effect of spring force, sealing gasket 14 contacts with valve seat, valve closing.When electromagnetic coil 25 energisings (as shown in Figure 2), under the effect of electromagnetic force, move on the electromagnetic valve core 26 with the valve seat of solenoid valve import 23 and fit, the pipeline that valve 4 is communicated with up and down is cut off, the water of upper chamber 8 is discharged by weep hole 24, and upper chamber's 8 pressure descend rapidly, is forming low high pressure reduction around the valve 4, promote valve 4 and move up valve open; Solenoid valve can be accomplished above-mentioned requirements when electricity is arranged, but just can't be under situation about having a power failure valve open, in order to address this problem, on valve body 1, added a hand switch 27, when outage, unscrew hand switch 27, come draining to make upper chamber's 8 pressure descend, valve 4 moves up, valve open.

Claims

1. guide electromagnetic valve, include valve body, wherein in the valve body valve rod is arranged, valve rod is arranged with the main valve plug that cooperates with valve port, be fixed with valve on the valve rod, this valve is divided into upper chamber and lower chambers with valve body, upper chamber links to each other with the outlet of solenoid valve, the import of solenoid valve links to each other by passage with the split-flow opening of valve body lower end, valve has individual path up and down, and this path is communicated with electromagnetic valve outlet by electromagnetic valve core, also is provided with hand switch on the valve body, it is characterized in that: this hand switch is arranged on the upper right corner of valve body separately, and is threaded in the upper chamber of valve body.

2. guide electromagnetic valve according to claim 1 is characterized in that: be provided with seal ring between described hand switch and the valve body.

3. guide electromagnetic valve according to claim 1 is characterized in that: the passage that the import of described solenoid valve links to each other with the split-flow opening of valve body lower end is a pipe passage.

4. guide electromagnetic valve according to claim 1 is characterized in that: the middle below of described valve rod is provided with a spring, and an end of this spring withstands on the upper-end surface of main valve plug, main valve plug is remained seal up valve port trend.

5. guide electromagnetic valve according to claim 1 is characterized in that: described valve is clipped between punch holder and the die holder, and is fixed on the upper end portion of valve rod by nut.

6. guide electromagnetic valve according to claim 1 is characterized in that: described valve rod is divided into two chambers with lower chambers, a sealed chamber and an open chamber.

7. guide electromagnetic valve according to claim 6 is characterized in that: described open chamber communicates with the outlet on valve body right side.

8. guide electromagnetic valve according to claim 1 is characterized in that: be provided with weep hole under the described solenoid valve, this weep hole is communicated with upper chamber by the applying of electromagnetic valve core.