CN2424453Y

CN2424453Y - Diaphragm gas meter gas route controller

Info

Publication number: CN2424453Y
Application number: CN 00209436
Authority: CN
Inventors: 邢伟华
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-19
Filing date: 2000-04-19
Publication date: 2001-03-21
Anticipated expiration: 2010-04-19

Abstract

The utility model relates to a diaphragm gas meter gas route controller composed of a brake mechanism, a self-hold release mechanism for keeping internal force balanceable, and a magnetic hold mechanism for driving the self-hold release mechanism; a release lever of the self-hold relieving mechanism is mutually pressed and contacted with a motion end of the magnetic hold mechanism; the self-hold release mechanism is mutually pressed and contacted with the brake mechanism; a brake rod of the brake mechanism is controlled to plug downward or to pull out from the rocker arm of the diaphragm gas meter so that the rocker arm is operated or is stopped to open or to close air passages. The utility model uses the self device of the gas meter to cut off or to control air passages, and thus, the utility model has the advantages of high safety and reliability, low cost, etc.

Description

Diaphragm gas meter gas circuit control device

The utility model relates to a kind of diaphragm gas meter gas circuit control device.

In prepayment diaphragm gas meter, use valve to control, but at present in the prepayment diaphragm gas meter employed valve have shortcomings such as cost height, reliability are low.

The purpose of this utility model be to provide a kind of safe, reliable, cost is low, utilizes gas meter, flow meter self device to realize the diaphragm gas meter gas circuit control device of air circuit breaker control.

The purpose of this utility model is achieved in that a kind of diaphragm gas meter gas circuit control device, its characteristics are: keep the self-sustaining releasing mechanism of balance and the magnetic maintenance mechanism of driving self-sustaining releasing mechanism action to form by arrestment mechanism, internal forces, the release lever of self-sustaining releasing mechanism compresses mutually with the magnetic maintenance mechanism motion end and contacts, the self-sustaining releasing mechanism compresses mutually with arrestment mechanism and contacts, and make that brake rod in the arrestment mechanism is controlled to be inserted down or transfer between the rocking arm of diaphragm gas meter, make the rocking arm action or stop action, reach the purpose of switch gas circuit.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the utility model structural front view;

Fig. 2 is a left view of the present utility model;

Fig. 3 is an arrestment mechanism structure cut-open view of the present utility model.

Referring to accompanying drawing 1,2,3, the self-sustaining releasing mechanism comprises 1-1 shell, 1-2 installing plate, 1-3 main shaft, 1-4 knob, 1-5 retracing spring, 1-6 main spring, 1-7 release lever, 1-8 lever, 1-9 support, 1-11 fixed screw; 10 is magnetic maintenance mechanism, and it adopts retaining coil magnetic or motor; Arrestment mechanism is by 2-1 axle sleeve, 2-2 brake rod, 2-3 O-ring seal, 2-4 retracing spring, 2-5 register pin, 2-6 screw, 2-7 nut, 2-8 packing ring, 2-9 spring washer, 2-10 spacer pin, 2-11 sealing O shape circle, 2-12 gas meter upper casing etc.

Principle of work of the present utility model is: be subjected to main spring 1-6 effect, the state of lever 1-8 is at downside, be pressed in the upper end of brake rod 2-2, the strength of spring 1-6 is greater than the strength of the retracing spring 2-4 of brake rod 2-2, brake rod 2-2 is depressed, the lower end of brake rod 2-2 is inserted between the rocking arm of diaphragm gas meter, makes the rocking arm akinesia, reaches the purpose of closing gas circuit.

When at machine inner rotary knob 1-4, overcome the elastic force of main spring 1-6, lever 1-8 left side moves upward, be subjected to the interaction of spring 1-6 and release lever 1-7, lever 1-8 keeps steady state (SS), at this moment, brake rod 2-2 is returned by the effect of retracing spring 2-4, removes control, and gas circuit is open-minded.

When needs turn-off gas circuit, control circuit provides drive current for retaining coil magnetic 10 (or motor), and release lever 1-7 is stirred in the motion end action of retaining coil magnetic 10, destroyed the balance that release lever 1-7 and spring 1-6 keep, the steady state (SS) of lever 1-8 is broken, and the left side is downward, is pressed on the brake rod 2-2, the elastic force that makes brake rod 2-2 overcome soft spring 2-4 moves down, be inserted between the rocking arm of diaphragm gas meter, make rocking arm stop to shake, reach the purpose of cutting off gas circuit.

Be subjected to the magnetic maintenance effect of retaining coil magnetic 10, release lever 1-7 keeps steady state (SS), and this moment, owing to can not set up equilibrium of forces, lever 1-8 left side can not make progress, and therefore is not enough to reach the purpose of opening gas circuit at machine inner rotary knob 1-4.If retaining coil magnetic 10 is passed into inverse current, its motion end counteragent is removed the control to release lever 1-7, release lever 1-7 is returned by the retracing spring effect, this moment rotary knob 1-4, the mechanical balance that can set up lever 1-8 reaches the purpose of opening gas circuit.

1-14 is a trip bolt among Fig. 2, and 12,15,16 are respectively screw, packing ring and spring washer.

Therefore the utility model has peace owing to utilize self device realization gas circuit cutting-off controlling Entirely, reliably, the advantage such as low cost.

Claims

1, a kind of diaphragm gas meter gas circuit control device, it is characterized in that: keep the self-sustaining releasing mechanism of balance and the magnetic maintenance mechanism of driving self-sustaining releasing mechanism action to form by the arrestment mechanism internal forces, the release lever of self-sustaining releasing mechanism compresses mutually with the magnetic maintenance mechanism motion end and contacts, the self-sustaining releasing mechanism compresses mutually with arrestment mechanism and contacts, and makes that brake rod in the arrestment mechanism is controlled to be inserted down or transfer between the rocking arm of diaphragm gas meter.

2, gas circuit control device according to claim 1, it is characterized in that: arrestment mechanism comprises the brake rod that is enclosed within the axle sleeve, the retracing spring that is positioned at the brake rod outer end, the register pin that is used for fixing, screw, nut, packing ring, spring washer, spacer pin, O-ring seals, gas meter upper casing, and brake rod seals by the rolling O-ring seals in axle sleeve.

3, gas circuit control device according to claim 2, it is characterized in that: the lower end of brake rod is in the shape of the letter V;

4, gas circuit control device according to claim 1 is characterized in that: the magnetic protection mechanism adopts retaining coil magnetic.

5, gas circuit control device according to claim 4 is characterized in that: magnetic protection coil is a motor.