CN2886239Y - Automatic control valve for card type water/gas meter - Google Patents

Abstract

The utility model discloses a plug card type automatic control valve for a water/gas meter, relating to a valve. Design goal of the utility model is to compose a plug card type automatic control valve for a water/gas meter, which is characterized by great flux, less pressure loss, reliable sealing and long performance life. The plug card type automatic control valve for a water/gas meter, includes a motor gear down framework and an automatic control valve, a rotation shaft in the control valve's shell, outer end of which is connected with the worm wheel drive at the gear down framework, the other end connecting with the nut in the valve shell. The inner screw thread of the nut is matched with the screw post, axial slot in the surface of which is matched glided with the radial projecting piece at the inner round plane of the annulus guiding piece, the projecting piece at the outer round plane of which is arranged in the hole of the control valve cavity. One end of the sealing ring connecting with the screw post, the other end is facing to the end of the circulating hole in the water/gas meter. The utility model is designed to fit the plug card control valves for supplying water, fire gases or heat.

Description

Card inserted type water/gas meter autocontrol valve

Technical field:

The utility model relates to a kind of valve, particularly a kind of card inserted type water/gas meter autocontrol valve.

Background technique:

In order to save the human resources of the usefulness of checking meter, combustion gas and tap water and central heating industry are progressively carried out card inserted type water or gas self-acting valve, and after user's plug-in card expense used, water or air valve were promptly closed automatically, stop to supply water or gas.As use ball valve, and though it is big to have a flow, the advantage that crushing is little, for motor driving, because the friction torque of this valve is difficult for regulating, the life-span easy to wear is short.The patent No. provides a kind of card inserted type water/gas meter autocontrol valve for 03284311.9, pass through rotational valve core, make axial bore on the spool relative with the hole on the valve casing or stagger, avoided the deficiency of ball valve, for the motor driving valve provides technical specifications, this patent is by motor driving, by the second-stage worm gear worm gear box spool and valve casing are relatively moved, realize getting through or closing of gas/water route, the rotation of motor makes motor just change (fetching boiling water/gas circuit) or counter-rotating (closing water/gas circuit) by the water/tolerance of plug-in card by electric signal.It is little that yet the shortcoming of this patented technology scheme is a flow, and the pressure loss is big, and end face seal structure, the impurity in Sealing generation corrosion or water/gas cause shortcoming poorly sealed and that working life is short.

Summary of the invention:

The purpose of this utility model is design a kind of card inserted type water/gas meter autocontrol valve, and it has, and flow is big, the pressure loss is little and seal reliable long service life.The technical solution of the utility model is, a kind of card inserted type water/gas meter autocontrol valve, it comprises motor decelerating mechanism and autocontrol valve, it is characterized in that: the rotatingshaft in the control valve casing, its outer end is connected with the worm drive of reducing gear, nut in the other end and the valve casing is connected, the internal thread of double-screw bolt and this nut matches, radial lugs and the lip-deep axial groove of double-screw bolt on the inner headed face of annular guiding piece are slippery, lug on the periphery of annular guiding piece places the hole in the above-mentioned control valve housing, one end of sealing seat is connected with double-screw bolt, and the other end is relative with the end face of opening in water/gas meter shell; Be fixed with a cam on the rotatingshaft outside the control valve casing, the center hole and the decelerator body of arc pendulum plate are hinged, and the two ends of this arc pendulum plate are relative with two sensitive switches that are located at the decelerator body with cam respectively.The outer end of described sealing seat is provided with elastic plate.The utility model in valve rotation and nut in be provided with the double-screw bolt that matches, between valve casing and double-screw bolt, be provided with guide plate, inside and outside flange on it respectively with double-screw bolt on axial groove and the groove of valve casing match, thereby finish the seal face of double-screw bolt and opening or closing of the water/flow channel between water/gas meter shell, thereby this autocontrol valve to have flow compared with the prior art big, the pressure loss is little, the advantage of the reliable and long service life of sealability.

Description of drawings:

Fig. 1 is a plan view of the present utility model, and Fig. 2 is the left view of Fig. 1, and Fig. 3 is the sectional drawing of valve and water/gas meter shell position relation, and Fig. 4 is the A-A sectional drawing of Fig. 3.

Embodiment:

In conjunction with above-mentioned accompanying drawing the utility model is elaborated, the difference of the technological scheme of the utility model and the patent No. 03284311.9 is that the structure of control valve has a great difference, and reduction gearing mechanism also is the rotatingshaft rotation by motor 1, worm gear 2, worm screw 2 speed reducer drive control valves, also the control mechanism with above-mentioned patent is identical in the mechanism of rotation of control motor and stall, also is made up of cam 4, pendulum plate 5 and two sensitive switches 6.The structure of the utility model control valve is, the worm screw of rotatingshaft 10 outside valve casing 8 is coaxial with the worm gear of reducing gear, rotating nut 9 in the other end of this rotatingshaft and the valve casing is connected, the outside thread of double-screw bolt 11 and the internal thread of rotating nut match, the flange cunning of one annular guide plate 14 fits in the axial groove of above-mentioned double-screw bolt, its outer flange places the hole of valve casing, one end of sealing seat 12 is connected with above-mentioned double-screw bolt, its both ends of the surface gas flow road junction end face with control valve and water/gas meter shell 7 respectively are relative, and the exterior edge face of sealing seat is provided with elastic plate 13.The internal thread of the outside thread of valve casing and water/gas meter shell matches.

Control valve working principle of the present utility model is, after the card of paying water or combustion gas expense inserts in the deck, control chip sends the signal motor and rotates, the rotatingshaft of control valve drives rotating nut and rotates, this moment, double-screw bolt was because the interior flange restriction of guide plate, double-screw bolt is moved to the left, sealing seat is thrown off the gas flow road junction in water/gas meter shell, so water or gas control valve are opened, meanwhile cam and pendulum plate make sensitive switch cut off motor power, the motor stall, when the plug-in card expense used, chip sent the counter-rotating of signal motor, and reduction gearing mechanism moves right the double-screw bolt drive sealing seat in the valve valve cuts out, another sensitive switch cuts off motor power, motor stall simultaneously.

Claims (2)

1, a kind of card inserted type water/gas meter autocontrol valve, it comprises motor decelerating mechanism and autocontrol valve, it is characterized in that: the rotatingshaft in the control valve casing, its outer end is connected with the worm drive of reducing gear, nut in the other end and the valve casing is connected, the internal thread of double-screw bolt and this nut matches, radial lugs and the lip-deep axial groove of double-screw bolt on the inner headed face of annular guiding piece are slippery, lug on the periphery of annular guiding piece places the hole in the above-mentioned control valve housing, one end of sealing seat is connected with double-screw bolt, and the other end is relative with the end face of opening in water/gas meter shell; Be fixed with a cam on the rotatingshaft outside the control valve casing, the center hole and the decelerator body of arc pendulum plate are hinged, and the two ends of this arc pendulum plate are relative with two sensitive switches that are located at the decelerator body with cam respectively.

2, card inserted type water according to claim 1/gas meter autocontrol valve, it is characterized in that: the outer end of described sealing seat is provided with elastic plate.

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