CN2579070Y - DC gear motor for intelligent water meter - Google Patents

Abstract

The utility model discloses a DC gear motor for an intelligent water meter. The utility model is composed of a motor, a gear transmission mechanism, etc., wherein, the motor and a gear box are engaged with a valve seat plane, and a gear set is engaged with a gear on an output shaft of the motor. The lower end of the output shaft of the gear box is provided with a groove and embedded with the flat part of the end part of a valve rod integrally connected with a spherical valve, and the upper end part of the output shaft of the gear box is fixed with a cam. Two sides of the cam are provided with micro switches, and the micro switches are fixed on a shell body of the gear box. The utility model is the motor with a limited rotation angle, accumulated error generated by infinite rotation can be avoided, and the correctness of opening and closing the valve is ensured. The utility model utilizes the precise micro motor and the multistage gear transmission mechanism with less power consumption, output torque is more than 30 kg cm, and the reliability of a water meter valve having a large caliber during larger water pressure can be ensured. The utility model is suitable for the intelligent water meters of industrial and mining enterprises, inhabitant residential areas, houses, etc.

Description

Intelligent water meter dc gear motor

Technical field

The utility model relates to a kind of dc gear motor, particularly relates to a kind of intelligent water meter dc gear motor.

Technical background

The drive motors and the gear drive thereof of existing intelligent water meter valve, all be to become an integral body with seat design, water meter factory purchases motor in the parts mode, behind gears at different levels and the annex thereof, with valve and other parts valve seat inside of packing into one by one, the energy index and the product quality of motor and gear drive can not correctly be measured and check to this assembling mode, simultaneously, so far the water meter valve still adopts straight-line valve film or valve core structure mostly, because the feather valve film is because of material aging, spirality rigidity spool is because of assembling bad or reason such as fret wear, can cause closing the problem that valve is not tight and useful life is short, can not satisfy the requirement of intelligent water meter of new generation.

The unlatching of intelligent water meter valve or close, by the prepayment intelligent card control, when the water meter card-reading system read during the effective water rate information of smart card savings, to the motor power supply, the motor rotation is through the transmission of multi-stage gear, drive valve rod and the valve rotation of one with it, make valve forward the enable possition to, water supply start, when read water rate information when being zero, provide opposite polarity voltage to motor, motor and valve reverse rotation make valve forward off-position to, stop to supply water.

Summary of the invention

The utility model is separated motor and gear drive from valve inner, constitute independently parts, dc gear motor is battery-powered, be used for driving the valve of intelligent water meter, be applicable to the rotation gate of spherical or fan-shaped sheet etc., two positions of rotation gate opening and closing are separated by 90 °, i.e. valve opening during 0 ° of position, valve closing during 90 ° of positions, the utility model is a kind of finite corner motor, be suitable for opening (0 °) and close forward and reverse rotation in (90 °) angular range, the accumulated error that can avoid continuously unlimited rotation to be produced like this, guarantee the correctness of valve opening and closing position, simultaneously, also overcome the multiple deficiency of existing rectilinear motion valve.

The utility model adopts accurate miniature DC motor and multilevel gear drive mechanism, power consumption is small, operating current is less than 0.2A, the maximum current of turn-off transient is below 0.3A, can simplify the water meter Circuit Design, use the electronic devices and components and the chip of common model, prolong battery useful life, and the output torque can guarantee the reliably working when large-diameter water meter valve and hydraulic pressure are big more than 30kgcm.

Description of drawings

Fig. 1 is an intelligent water meter of the present utility model dc gear motor overall structure schematic diagram.

Fig. 2 is the intelligent water meter of the utility model transmission mechanism schematic diagram in the dc gear motor.

Fig. 3 is the intelligent water meter of the utility model sensitive switch schematic diagram on the dc gear motor gear box casing.

Embodiment

Below the utility model is further described:

See figures.1.and.2, the housing of motor (1) and gear box (2) and valve seat (3) plane are harmonious, be connected and fixed with screw, make pancake with valve rod (10) end of spherical valve (9) one in the valve seat (3), this pancake partly stretches into rectangular groove (8) tabling of gear box (2) and output shaft (6) axle head, what output shaft (6) upper end was fixing is the cam (7) that is used for touching sensitive switch, the position of cam (7) far-end and the position relative fixed of gear box (2) output shaft (6) lower end groove (8), and the position relative fixed of the position of output shaft groove (8) and spherical valve (9).

With reference to Fig. 3, the size of cam (7) and two sensitive switches (11A) angle position (11B) reach with the distance of cam (7) decides through precise design.

When the water meter card-reading system read the water rate information that stores of smart card when effective, handle through the water meter control circuit, to motor (1) energising rotation, slow down through multi-stage gear (5) (4) (13) (12) (14) (15) transmission, valve rod (10) that gearbox output shaft (6) lower end groove (8) drive is chimeric and spherical valve (9) are gone up end cam (7) with gearbox output shaft (6) and are rotated simultaneously, when spherical valve (9) when forwarding the enable possition to, cam (7) far-end just in time touches sensitive switch (11A), sensitive switch (11A) conducting, send the signal of telecommunication, handle through the water meter control circuit, motor (1) stall, spherical valve (9) remains on the enable possition, and water flows to delivery port (17) from water inlet (16).

When the water meter card-reading system read the water rate information that stores of smart card when being zero, the water meter control circuit applies opposite polarity voltage to motor (1), motor (1) reverse rotation, still pass through multi-stage gear (5) (4) (13) (12) (14) (15)) the transmission deceleration, gearbox output shaft groove (8) drives cam (7) reverse rotation simultaneously of chimeric valve rod (10) and spherical valve (9) and gearbox output shaft (6) upper end, when spherical valve (9) when forwarding off-position to, cam (7) far-end just in time touches another sensitive switch (11B), sensitive switch (11B) conducting, send the signal of telecommunication, handle through the water meter control circuit, motor (1) stall once more, spherical valve (9) is closed, and current stop.

Claims (1)

1 one kinds of intelligent water meter dc gear motors, it comprises motor and gear drive, it is characterized in that the motor (1) and the gear box (2) that are harmonious with valve seat (3) plane, gear (5) engagement on described gear train (4) and motor (1) output shaft, output shaft (6) lower end of gear box (2) is provided with groove (8), and pancake part tabling with valve rod (10) end of spherical valve (9) one, the end, output shaft (6) upper end of gear box (2) is fixed with cam (7), two sides of described cam (7) are respectively equipped with sensitive switch (11A and 11B), on the housing of described sensitive switch (11A and 11B) stator gear box (2).

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