CN87213893U

CN87213893U - Auto controlled switch against fire

Info

Publication number: CN87213893U
Application number: CN 87213893
Authority: CN
Inventors: 牛国忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-09-30
Filing date: 1987-09-30
Publication date: 1988-05-25

Abstract

The utility model relates to an auto-controlled switch against fire. In order to prevent the explosions of oil and air tanks caused by a small fire around a ball valve for oil and air pipelines or to make alarm switches and fire-fighting water valves automatically opened, and the automatic control problems of the switches must be solved. The utility model is characterized in that a hard metal supporting frame, an extension spring and an inflammable rope are arranged to form an attachment of a ball valve or a pulling type switch; when the fire exists around the utility model, the inflammable rope is burnt out, the oil and the air valves are automatically cut off by the contraction of the spring, the water valve is fully opened, and a circuit is switched on. The utility model has the advantages of simple structure, easy manufacture, fire prevention, fire extinction, safety warning, etc.

Description

Auto controlled switch against fire

The utility model belongs to the auxiliary equipment of ball valve or the fire prevention of pull type electric switch, fire extinguishing or warning.

The unlatching of ball valve or close in prior art must be removed the gauge tap handle with hand; In like manner the pull type electric switch has only with hand operating switch handle circuit is connected or disconnected.But, around the ball valve that is installed on easy fuel oil, the air pipe, played fire, cause oil, gas tank blast for preventing that the intensity of a fire from enlarging, be badly in need of the valve closing of opening (for the ball valve of the fire extinguishing tap that is arranged on easy place on fire, then need valve open), because of on fire around the valve, can't extend through hand and go, valve just can not close or open immediately, in like manner also can't remove electric switch by fire alarm equipment with hand.

In order to solve this technical barrier, basic design of the present utility model is: fix a spring in a side of switch handle, an end of spring connects the end of switch handle; Inflammable rope of opposite side knot.Pull this rope and make valve wide open or full cut-off, drive spring simultaneously and be in extended state.The fag end that pulls is fixed, the convergent force balance of the tension force of rope and spring, valve is Chang Kai or normally closed just.When valve was on fire on every side, inflammable rope was blown immediately, and the convergent force of spring drives the switch handle and rotates, and valve is just closed automatically or opened.In like manner if be used for electric switch, then can automatic processing circuit, send alarm signal.The utility model is made of following parts:

1, hard metallic support that is fixedly mounted on valve body or the electric switch shell, it has three arms: one is to become vertical fixed installation arm with the switch handle of valve full cut-off or fully open position; Another is the spring fixed arm that parallels with above-mentioned switch handle; Another is and the corresponding inflammable rope fixed arm of spring fixed arm.

2, metal matter extension spring, its a spring fixed arm end that is fixed in above-mentioned support, the other end connects switch handle end.

3, one has sufficient intensity, inflammable cotton, fiber crops or the chemical fiber rope of chance fire, and its one ties up to switch handle end; The other end binds a little hook of metal, is hung in the aperture of the inflammable rope fixed arm of above-mentioned support end.

The utility model has the advantages that: simple in structure, be convenient to processing and fabricating, simple and easy to do, cost is very low, and automatic fire prevention, fire extinguishing, warning are safe and reliable, as long as just there is the fire of a match to blow inflammable rope, rope one is disconnected, convergent force by means of spring just can make oil, the air valve held close automatically, and the tap that is closing is opened automatically, and dead circuit is connected automatically.

Accompanying drawing 1 is the schematic diagram of the auxiliary equipment that is used for ball valve after installing.(1) is valve body among the figure, and (2) are the switch handle, and (3) are metal matter extension spring, (4) be inflammable rope, (5) are hard metallic support fixed installation arm, and (6) are support fixing spring arm, (7) be the fixing inflammable rope arm of support, (8) are bolt nut, and (9) are the little hook of metal.

Accompanying drawing 2 is the schematic diagram of the auxiliary equipment that is used for the pull type electric switch after installing.(1) is the electric switch shell among the figure, and the represented meaning in (2)～(9) is entirely with Fig. 1 respective symbol.

In the present embodiment, hard metallic support (5), (6), (7) adopt sheet metal to be stamped to form, be used for being processed into of ball valve "

" fixed installation arm (5) broad of shape; all the other (6), (7) two arms are narrower; be full cut-off when switch handle (2) is parallel with valve body (1), fixed installation arm (5) should be bent to an annulus, are fastened in to use bolt, nut (8) fixing on the valve body (1) again.The length of spring fixed arm (6) equals 1.5 times of switch handle (2) length at least, and this arm and handle are positioned at same plane after the installation, and both are located along the same line by end.

Be used for the pull type electric switch, then be processed into "

" shape, the fixed installation arm is the same with the electric switch shell wide, and the middle hole of making a call to is fixed with the nut that the switch handle is installed, and all the other two arms are all isometric with the switch handle.

The metal stretching spring adopts the above steel wire coiled of 0.4mm, the length after it shrinks, the distance when equaling valve full cut-off or standard-sized sheet between switch handle and the stand spring fixed arm.

Inflammable rope adopts the less thicker cotton cord of the twist, the fiery back of chance rope and fiery easier greatly the blowing of contact area, and its length is advisable valve wide open or full cut-off after fixing with hook.

This device is simple and be suitable for multiple switch, valve, and simultaneously owing to various controlled valve shape differences, therefore can install some parts to this does a little transformations of the way.For example the fixing inflammable rope arm (7) of the metallic support of this device fixed installation arm (5), support fixing spring arm (6) and support can change system into and above indicate "

" or " " variform other shapes, because how not too important the shape of these three supports is, just for fixing metal extension spring (3) and inflammable rope (4).This device can also be without support, and directly the metal stretching spring (3) and the inflammable rope (4) that should be connected among Fig. 1, Fig. 2 on the support, be separately fixed at that valve body (1) is gone up or valve body around pipeline, support or other fixed objects on.Also be applicable on single-phase, two-phase or the three-phase combined floodgate formula electric switch with the sample device.Its structure as the pull type electric switch substantially, just the bolt nut (8) of support (5), (6), (7) and clamp bracket is done the corresponding transformation of the way according to the shape of combined floodgate formula electric switch and is got final product.In order to enlarge the fire area of inflammable rope (4), can place similar inflammable articles such as cotton balls thing simultaneously at inflammable rope (4) middle part.More than these transformations of the way all must not to influence extension spring (3) capable of expansion and contraction, influence switch handle (2) self-return, must guarantee that all switch handle (2) is in this switch and should opens or closed condition when the no condition of a fire, and have the condition of a fire blow behind the inflammable rope (4) this switch immediately self-return in closing or opening, the fire extinguishing so that this device is prevented fires effectively.

Claims

1, the affiliated facility of fire prevention, fire extinguishing or the warning of a kind of ball valve or pull type electric switch is met the device (hereinafter to be referred as automaton) of fiery automatic control switch, it is characterized in that this device is made of following parts:

(1) hard metallic support [5], [6], [7] that are fixed on valve body or the electric switch shell;

(2) one one connects above-mentioned hard metallic support spring fixed arm [6], and the other end connects the metal matter extension spring [3] of switch handle [2];

Article (3) one, sufficient intensity is arranged, meet fire inflammable cotton, fiber crops or chemical fiber rope [4], its end that is bound in switch handle [2], the other end binds a little hook of metal [9], hangs in the terminal aperture of inflammable rope fixed arm [7] of above-mentioned hard metallic support.

2, automaton according to claim 1 is characterized in that described hard metallic support (5), (6), (7), when being used for ball valve, be processed to "

" shape, the length of its spring fixed arm (6) equals 1.5 times of valve switch handle (2) length at least; When being used for the pull type electric switch, be processed to "

" shape, it is isometric, wide with the electric switch housing that it installs and fixes arm (5), and all the other two arms and switch handle are isometric.

3, automaton according to claim 1, switch handle (2) and the distance between the metallic support spring fixed arm (6) firmly when it is characterized in that its length after shrinking of described metal matter extension spring (3) equals valve full cut-off or standard-sized sheet.