CN2191323Y

CN2191323Y - Electromagnetic valve for fire control

Info

Publication number: CN2191323Y
Application number: CN 94212481
Authority: CN
Inventors: 陈征; 刘畅
Original assignee: 王玉兰
Priority date: 1994-05-21
Filing date: 1994-05-21
Publication date: 1995-03-08
Anticipated expiration: 2004-05-21

Abstract

The utility model relates to an electromagnetic valve with a large caliber for fire-fighting, belonging to the fire engineering. The purposes of the utility model are to realize long-term sealing, reliable operating performance, small operating power and the ability of being controlled manually, and the utility model is suitable for modernized fire-fighting equipment working. The main structure is that a valve body 1 is input into an A cavity and is communicated with an output C cavity through a valve core 5; a B cavity is communicated with the output C cavity through a b flow passage and a pilot valve 4; the d flow passage of the C cavity is communicated with a signal feedback device 13; the upper compression area of the valve core is greater than the lower compression area. The utility model has the advantages of strong sealability, reliable work for decades and small operating power; the electromagnetic valve for fire-fighting can always work either the power is switched on or off, and is suitable for automated management.

Description

Electromagnetic valve for fire control

The utility model relates to the special valve of fire protection engineering, refers in particular to heavy caliber fire-fighting solenoid valve.

In background technique, the fire-fighting special valve does not also have, and substitute with industrial solenoid valve, mainly by valve body, spool, seal ring and form with the valve rod of electric control, 1. its deficiency is because this fire-fighting valve always is in war footing for a long time, band is pressed operation, its sealing configuration often is the plane, the sealing material chemical property is not good enough again, so sealing configuration is easily stopped up by foul, seal ring is aging to cause leaking extinguishing agent, for example: foamite extinguisher, in case breaking out of fire, the variation or the no-output of matter taken place in extinguishing agent, will bungle the chance of winning a battle, and causes heavy losses, this in addition leakage makes luxurious hotel, equipment such as megastore and storehouse property causes serious harm too.2. because this solenoid valve leaves manual overvide, in case under the abnormal power-down situation, be difficult to deal with urgent fire fighting.Normally whether 3. this solenoid valve output services, have only at the scene and just know, do not pass to Fire Services Communication Centre because there is feedback signal, so this valve is difficult to adapt to the control apparatus of modern fire-fighting.4. because DC electrical source 24V is used in the fire-protection equipment unification, control simultaneously starts several solenoid valves, and every solenoid valve adopts primary seal to control, so the solenoid valve power that uses is bigger at present, is difficult to satisfy the requirement of large-engineering fire extinguishing fire-fighting.5. this solenoid valve is owing to be not that special valve is difficult to long term seal, so it is zero can not satisfy that some fire-protection equipments is required solenoid valve minimum operationg pressure differential, when for example the foam firefighting equipment of large-scale oil depot requires no fire, it in the pipe network blank pipe, working pressure is zero, when taking place, fire just starts fire-protection equipment, the input extinguishing agent, and pipe network just has working pressure.

The purpose of this utility model is to overcome the deficiency in the above-mentioned background technology, and a kind of fire-fighting solenoid valve is provided, and solves following problem: 1. adopt barrier film and twin-stage sealing configuration, solve and leak a difficult problem, reach the purpose of long term seal reliable working performance.2. adopt the direct-acting pilot valve, it is big to solve work surface friction drag, and energy consumption is big, and the low and difficult problem of not having manual control valve of sensitivity reaches with less power and can control a plurality of solenoid valve proper functioning reliably, and the manual purpose of control.3. adopt feedback signal device, solve Fire Services Communication Centre and can not in time understand the difficult problem of valve opening work and fire-fighting work state, can both be timely fire-protection equipment working state and alarm signal be passed to the purpose of Fire Services Communication Centre no matter reach the electric and manual manipulation control valve.4. make the utility model can adapt to the requirement of modernized fire-protection equipment, satisfy the requirement of various especially heavy caliber fire-fighting special electromagnetic valve technical performance.

Technical solution of the present utility model is as follows:

The seal ring and the spool 5 of open and close are up and down arranged in the valve body 1, the input A chamber of valve body 1 below links to each other with output C chamber through spool 5, the coil 12 that assembling control spool 5 moves up and down in the valve body 1, main feature is: the compression area of contact fire-fighting work media is greater than the compression area below the spool 5 above the spool 5, the input A chamber of valve body 1 below communicates through the B chamber of a runner with spool 5 tops, the b runner in B chamber communicates with output C chamber through pilot valve 4 and c runner, and the d runner top D chamber assembling signal in the output C chamber returns feedback device 13.

Technical solution of the present utility model also comprises:

In pilot valve 4, the rubber valve seat 6 of valve body 1c runner upper end B and up and down armature 8 cooperate do open and close, the fixing valve rod 20 in armature 8 upper ends is with Returnning spring 9, manually opened cam lever 10 is assembled with pin in valve rod 20 upper ends, the coil 12 that moves up and down of control armature 8 is fixed in guide's valve seat 17, and the valve seat lid 21 of guide's valve seat 17 tops assembling and manually opened cam lever 10 cooperate as fulcrum.

In signal feed back device 13, the d runner in output C chamber communicates with the D chamber, top, the D chamber assembling elastomer diaphragm 14 and the startup pole socket 15 of valve body 1, start starting bar 16 lower ends that are installed with Returnning spring 9 in the pole socket 15, make contact matching with movable up and down elastomer diaphragm 14, starting bar 16 upper ends are done to touch control with the sensitive switch 19 of signal output and are cooperated.

In the twin-stage sealing configuration, the conical surface of spool 5 lower ends cuts out with the rubber valve seat 6 in the valve body 1A chamber and cooperates, and the conical surface of armature 8 lower ends cuts out with the rubber valve seat 6 on the valve body 1c runner and cooperates.

In pilot valve 4, there is operation instruction sign board 11 manually opened eccentric shaft 10 rear ends.

In valve body 1 output C chamber, there is the E runner to link to each other with the mechanical type warning water system.

Be 1.5～3.5 times of compression areas below it to the compression areas of fire-fighting medium above the spool 5.

Description of drawings of the present utility model is as follows:

Fig. 1 is a solenoid valve main valve cut-away view, also is G-G sectional view among Fig. 2.

Fig. 2 is the sectional view that pilot valve 4 and main valve link, and also is the half sectional view that F-F cuts open among Fig. 1.

Fig. 3 is a m place amplification view among Fig. 1, also is signal feed back device 13 sectional views.

Above-mentioned number in the figure is described as follows:

The 1-valve body, 2-rubber seal barrier film, 3-valve gap, 4-pilot valve, the 5-spool, 6-rubber valve seat, 7-seal dissepiment pressing plate, 8-armature, the 9-Returnning spring, the manually opened core shift handle of 10-, 11-sign board, 12-coil, 13-signal feed back device, the 14-elastomer diaphragm, 15-starts pole socket, the 16-starting bar, 17-guide's valve seat, 18-loam cake, the 19-sensitive switch, 20-valve rod, 21-valve seat lid.

Embodiment of the present utility model is described as follows:

Referring to Fig. 1, valve body 1 right-hand member A chamber is the fire-fighting work flowing medium, has certain pressure in the A chamber, and often be in war footing, in the A chamber, locate rubber valve seat 6 to be arranged and closely cooperate in last aperture with 5 times conical surfaces of spool, stop the fire-fighting work medium to flow out, the A chamber also has an a runner in addition, the fire-fighting work medium is communicated through the B chamber of a runner with spool 5 tops, rubber seal barrier film 2 lower ends by seal dissepiment pressing plate 7 be assemblied in spool 5 above, seal dissepiment 2 upper ends are assemblied in above the valve body 1 with valve gap 3, because the A chamber, the B chamber is full of the fire-fighting work medium, so its pressure equates, but because of the compression area above the spool 5 greater than 1.5～3.5 times of the compression areas below it, so spool 5 is in downward closed state.A b runner is arranged in the B chamber, lead to pilot valve 4.Input A chamber communicates with output C chamber through spool 5, and the fire-fighting work medium is exported the fire-fighting of putting out a fire through the C chamber, in the C chamber, have the d runner to communicate with signal feed back device 13, has E runner and mechanical type warning water system to report to the police.Referring to Fig. 2, the b runner in B chamber communicates with c runner, C chamber through pilot valve 4, above the c runner in valve body 1 rubber valve seat 6 is arranged, the armature 8 lower end conical surfaces and valve seat 6 cooperate as hermetically closing, armature 8 upper ends fixedly valve rod 20 are installed with Returnning spring 9, rotating manually opened cam lever 10 is assembled with pin in valve rod 20 upper ends, coil 12 is assemblied in guide's valve seat 17, above the valve seat that links to each other with valve seat 17 lid 21 and manually opened cam lever 10 cooperate as pressure point, sign board 11 hangs over manually opened cam lever 10 the other ends.Armature 8 is second level sealing, and piston 5 is first order sealing.Referring to Fig. 3, d runner in the valve body 1 output C chamber communicates with top D chamber, the elastomer diaphragm 14 of top, D chamber and startup pole socket 15 usefulness screws are assemblied on the valve body 1, the up and down starting bar 16 of assembling is installed with spring 9 in the loam cake 18 that starts pole socket 15 and assembling, 16 times end in contact elastomer diaphragms 14 of starting bar, last end in contact sensitive switch 19.

Working principle of the present utility model is like this, work as breaking out of fire, need solenoid valve to open valve, make the output of fire-fighting work medium go to put out a fire, at first energising makes coil 12 excitatory, armature 8 is attracted to and moves, and the working medium in the B chamber enters the C chamber rapidly, and the pressure in B chamber descends, the pressure of working medium is upwards pushed spool 5 open, main valve is opened, and working medium flows out from the A chamber through the C chamber, and the C chamber becomes open state all the time during because of fire extinguishing, A, B two chambeies always have pressure reduction to exist, main valve is in opening state, in case coil 12 outages reset rapidly under the work of armature 8 springs on the throne, pilot valve is closed, after working medium was full of the B chamber, spool 5 fell, and main valve is closed.In like manner under the situation that does not have electricity,, produce above-mentioned working condition too with manually opened cam lever 10.The working principle of signal feed back device 13 is: when the C chamber working medium of flowing through, the working medium in D chamber is used on the diaphragm 14 with certain masterpiece, diaphragm 14 resiliently deformables promote starting bar 16 and trigger compression sensitive switch 19 contacts, make the working medium output signal be delivered to Fire Services Communication Centre, thereby document have extinguishing agent output.Working medium also can flow to the E runner and removes to promote the mechanical type warning water system and send the tinkle of bells and report to the police in addition, and this mainly is to carry out under the outage abnormal conditions.

Advantage of the present utility model and effect are as follows:

1, owing to adopt the diaphragm type sealing, make sealed insulation reliable, all potted components all adopt the neoprene anti-aging, that ozone resistance is good to make, and guarantee the reliability of electromagnetic valve for fire control many decades long-term work with this.

2, owing to adopt the secondary seal structure, its spool adopts the conical surface seal form, to contact with valve seat be a toroid to the spool conical surface like this, it is little that it not only has required sealing force, sealing can be outer, also can exempt the foul that working media brings into and be deposited on the sealing surface of valve seat, cause poorly sealed leakage, the armature in the pilot valve and valve seat construction also are like this.

3, owing to have additional manual eccentric opening device, so under the abnormal conditions of outage, energy is effortless to be opened valve with hand, also be provided with the insurance pin simultaneously and use the demonstration version, prevent from opening by mistake, anyone can be with main valve open under the guidance of display board.

4, because the armature work of pilot valve does not have frictional resistance, only have the active force of back-moving spring, so the required electrical power of open valve is very little, reaches energy-conservation purpose. Through evidence, even if strengthen b, c flow passage aperture, the increase of its power is very little, and this point is that the industrial electro magnet valve has no way of accomplishing.

5, signal feedback device has used the diaphragm trigger element, has namely guaranteed sealing, guaranteed again sensitivity, as long as evidence has the working medium pressure of 0.01MPa, microswitch gets final product conducting, and therefore device is not strengthened reliability and the automatic management degree of electromagnetic valve for fire control.

Claims

1, the fire-fighting solenoid valve, comprise: the seal ring and the spool (5) of open and close are up and down arranged in the valve body (1), the input A chamber of valve body (1) below links to each other with output C chamber through spool (5), the coil (12) that assembling control spool (5) moves up and down in the valve body (1), it is characterized in that: the compression area of contact fire-fighting work medium is greater than the following compression area of spool (5) above the spool (5), the input A chamber of valve body (1) below communicates through the B chamber of a runner with spool (5) top, the b runner in B chamber communicates with output C chamber through pilot valve (4) and c runner, and the d runner top D chamber assembling signal in the output C chamber returns feedback device (13).

2, fire-fighting solenoid valve according to claim 1, it is characterized in that: in pilot valve (4), the rubber valve seat (6) of valve body (1) c runner upper end B cooperates do open and close with up and down armature (8), the fixing valve rod (20) in armature (8) upper end is with Returnning spring (9), manually opened cam lever (10) is assembled with pin in valve rod (20) upper end, the coil (12) that control armature (8) moves up and down is fixed in guide's valve seat (17), and the valve seat lid (21) of guide's valve seat (17) top assembling cooperates as fulcrum with manually opened cam lever (10).

3, fire-fighting solenoid valve according to claim 1, it is characterized in that: in signal feed back device (13), the d runner in output C chamber communicates with the D chamber, top, the D chamber assembling elastomer diaphragm (14) of valve body (1) and startup pole socket (15), start starting bar (16) lower end that is installed with Returnning spring (9) in the pole socket (15), make contact matching with movable up and down elastomer diaphragm (14), starting bar (16) upper end is done to touch control with the sensitive switch (19) of signal output and is cooperated.

4, fire-fighting solenoid valve according to claim 1 and 2, it is characterized in that: the conical surface of spool (5) lower end cuts out with the rubber valve seat (6) in valve body (1) the A chamber and cooperates, and the conical surface of armature (8) lower end cuts out with the rubber valve seat (6) on valve body (1) the c runner and cooperates.

5, fire-fighting solenoid valve according to claim 2 is characterized in that: in pilot valve (4), there is operation instruction sign board (11) manually opened eccentric shaft (10) rear end.

6, fire-fighting solenoid valve according to claim 1 is characterized in that: in valve body (1) output C chamber, have the E runner to link to each other with the mechanical type warning water system.

7, fire-fighting solenoid valve according to claim 1 is characterized in that: be 1.5～3.5 times of compression areas below it to the compression area of fire-fighting medium above the spool (5).