CN2554428Y

CN2554428Y - Built-in control switch valve of gas meter

Info

Publication number: CN2554428Y
Application number: CN 02268232
Authority: CN
Inventors: 吕文孝
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-06
Filing date: 2002-07-06
Publication date: 2003-06-04
Anticipated expiration: 2012-07-06

Abstract

The utility model discloses a gas meter interior-type controlling switch valve used for a gas pipeline. An inner cavity comprising an end cover is connected with the end part of a motor in the inner hole of a casing body, a gear and a worm are connected on a core axle fixed and connected with the inner cavity in a rotating way, and are respectively meshed with a motor gear and a worm wheel connected in the inner cavity thereof in a rotating way; and the gear connected with the worm is also connected with a gear rack shiningly connected on a guide rod in the inner cavity; a returning spring is connected with one of the guide rods; one end of a pressing rod is connected with the end cover threading an end cover through hole; another returning spring is connected on the pressing rod positioned between the end surface of the inner cavity of the end cover; and the other end of the pressing rod is connected with a sealing cushion corresponding to an air outlet hole on the casing body. Through operating an electrical control device, the reliability and the stability of the automatic open or close of the gas pipeline valve are realized, and the operation is accurate and flexible, thereby effectively safeguarding the economic interests of gas usage and the management of the both sides of residential users and the gas management department.

Description

The built-in control switch valve of gas meter

Technical field: the utility model relates to the control gear that gas pipeline is opened or closed; The built-in control switch valve of the gas meter that is specifically related to use on the gas pipeline.

Background technique: combustion gas (as the coal gas) metering and the toll administration that use in the urban and rural households life, normally by being connected in the pattern gas meter control gear in user's indoor fuel gas pipeline, automatically realize the unlatching of user's gas pipeline or close, to realize that civil gas management department buys gas consumption in advance to the resident, in use quantitatively periodically gives monitoring management.Said control gear generally is by being connected in the straight line motion of the bistable electromagnetic switch valve on the fuel gas pipeline, realizes the unlatching of fuel gas pipeline or closes.Because electromagnetic switch valve reliable in action poor stability, switch valve is inaccurate nimble, the user in use, it exists deficiency to be: the one, because of fuel gas pipeline is subjected to vibrations (maintenance is collided as fuel gas pipeline), easily make control gear out of control, often cause the user to purchase gas consumption in advance and do not use up and close the gas valve phenomenon too early, had a strong impact on the economic benefits of resident (buying gas side); The 2nd, electromagnetic switch valve uses for a long time, its valve body connected element action cooperation is prone to adhesion phenomenon, when purchasing gas consumption in advance, the resident uses up, when needing to close gas valve by control gear immediately, but can not move timely and accurately and close, cause the resident still can gratis use combustion gas, grievous injury the economic benefits of civil gas management department (selling gas side).

Summary of the invention: technical problem to be solved in the utility model: because electromagnetic switch valve reliable in action poor stability, switch valve is inaccurate nimble, once being to cause the user to purchase gas consumption in advance not use up and close gas valve too early, the economic benefits of resident (buying gas side) have been influenced; The 2nd, the user purchases gas consumption in advance when using up, and can not cause the user still can gratis use combustion gas by control gear throttle down immediately, grievous injury the economic benefits of civil gas management department (selling gas side).

The utility model is to solve the problems of the technologies described above the technological scheme that is proposed: the built-in control switch valve of this gas meter comprises housing and motor; Its improvement is that the structure that the housing endoporus is provided with electric controller is: be connected with in the inner chamber that end cap constitutes in the motor end, the gear and the worm screw that are rotatably connected with on its mandrel that is connected are respectively with motor gear with rotate the worm gear that is connected in its inner chamber and be meshed; The gear that links to each other with described worm gear is meshed with the tooth bar that slip is connected on its inner chamber guide rod again; On one of them guide rod between motor side portion and the tooth bar, be connected with Returnning spring; Depression bar one end joins through end cap through hole and tooth bar; On the depression bar between resonator end surface in end cap and the tooth bar, be connected with Returnning spring; The sealing gasket that depression bar the other end is connected with is corresponding with the air outlet hole position on the housing.

The utility model is taked said structure, do the rotation of different positive and negative rotation directions by driven by motor company gear thereon, drive the gear, worm and worm gear, the rack pinion transmission that are connected with its gear matched respectively and do gearing down, thereby the depression bar of having realized being connected in tooth bar drives sealing gasket and does toward complex line and move, reached the unlatching of control gas valve respectively or closed, reliable in action is stable, switch is accurately nimble, has safeguarded that effectively resident's (buying gas side) uses combustion gas and the management combustion gas both sides' of civil gas management department (selling gas side) economic benefits.

Description of drawings:, embodiment of the present utility model is described in further details below in conjunction with accompanying drawing.

Fig. 1 looks cutaway view Amplified image for the master of first kind of mode of execution of the utility model;

Fig. 2 is the vertical view cutaway drawing of Fig. 1;

Fig. 3 is the left pseudosection of Fig. 1;

Fig. 4 is second kind of mode of execution plan view of the utility model;

Fig. 5 is the plan view of Fig. 4;

Fig. 6 is the third mode of execution plan view of the utility model;

Fig. 7 is the plan view of Fig. 6.

Embodiment: Fig. 1-shown in Figure 7.This built-in control switch valve of gas meter that comprises housing 2 and micromachine 14, be to be: be connected with in the inner chamber that end cap 6 constitutes in motor 14 ends in the structure that housing 2 endoporus are provided with electric controller, combination gear 12 that is rotatably connected with on its mandrel that is connected 18 and worm screw 11 are meshed with motor gear 13 and the worm gear 20 that rotation is connected in its inner chamber respectively; Gear 19 with described worm gear 20 parallel connections is meshed with the tooth bar 9 that slip is connected on its inner chamber guide rod 8 and 16 again; On the guide rod 8 between motor 14 ends and the tooth bar 9, be connected with Returnning spring 10; Depression bar 5-end joins through end cap 6 through holes and tooth bar 9; On the depression bar 5 between resonator end surface in end cap 6 and the tooth bar 9, be connected with Returnning spring 7; The rubber gasket 4 that is connected with in described depression bar 5 the other end is corresponding with air outlet hole 1 position of housing 2 one ends.According to different gas meter installation requirements, the outside of housing 2 can not be provided with fitting seat 21 (shown in Figure 3).Also can be provided with fitting seat 21 (Fig. 4-shown in Figure 7) in a side (left side or right side) of housing 2.The other end of housing 2 is provided with sealing cover 15.During use, the utility model is installed in the pattern gas meter on the fuel gas pipeline usually, and the inlet hole 3 on its housing 2 links to each other with the gas meter suction port is airtight; 1 airtight the joining of air outlet hole of its rubber gasket 4 and housing 2, be throttle down state (Fig. 1-shown in Figure 2).At this moment, motor 14 counterrotatings quit work, and tooth bar 9 pressure springs 7 move to left, and guarantee that tooth bar 9 teeth are in the initial engagement state that is about to separate with gear 19 gear teeth.When civil gas management department buys combustion gas needs Open valve according to the resident, intelligence controlling device sends starting-up signal, motor 14 is rotated in the forward respectively and rotates by gear 13 driven gears 12 and worm screw 11, worm gear 20, and rotate by the gear in parallel 19 with worm gear 20, thereby control tooth bar 9 is done straight line and is moved to right under the effect of Returnning spring 7, and the rubber gasket 4 of depression bar 5 ends and the air outlet hole 1 of housing are opened.Tooth bar 9 slide along guide rod 8 and 16 move to right in, also compression reseting spring 10 shrinks, when tooth bar 9 moves to right when making its tooth be in the initial engagement state that is about to separate with gear 19 gear teeth, motor 14 quits work.Need be as civil gas management department by intelligence controlling device stop supplies resident's combustion gas, close the air outlet hole 1 on the housing 2, when reverting to Fig. 1-shown in Figure 2 state, 14 counterrotatings of may command motor, driven gear, worm and worm gear, gear rack transmission repeat next work cycle respectively.

Claims

1, the built-in control switch valve of a kind of gas meter comprises housing (2) and motor (14); It is characterized in that the structure that housing (2) endoporus is provided with electric controller is: be connected with in the inner chamber that end cap (6) constitutes in motor (14) end, gear (12) that is rotatably connected with on its mandrel that is connected (18) and worm screw (11) are respectively with motor gear (13) with rotate the worm gear (20) be connected in its inner chamber and be meshed; The gear (19) that links to each other with described worm gear (20) is meshed with the tooth bar (9) that slip is connected on its inner chamber guide rod (8) and (16) again; On one of them guide rod (8) and (16) of being positioned between motor (14) end and the tooth bar (9), be connected with Returnning spring (10); Depression bar (5) one ends join through end cap (6) through hole and tooth bar (9); On the depression bar (5) that is positioned between end cap (6) resonator end surface and the tooth bar (9), be connected with Returnning spring (7); The sealing gasket (4) that depression bar (5) the other end is connected with is corresponding with air outlet hole (1) position on the housing (2).

2, the built-in control switch valve of gas meter according to claim 1; It is characterized in that: a described side at housing (2) is provided with fitting seat (21).