CN101526152A

CN101526152A - Overdrive motor valve with automatic meshing and de-meshing functions

Info

Publication number: CN101526152A
Application number: CN200910097934A
Authority: CN
Inventors: 张恩满; 张华�
Original assignee: ZHEJIANG GOLDCARD HIGH-TECH ENGINEERING Co Ltd
Current assignee: Zhejiang Goldcard High-tech Co., Ltd.
Priority date: 2009-04-20
Filing date: 2009-04-20
Publication date: 2009-09-09

Abstract

An overdrive motor valve with automatic meshing and de-meshing functions comprises a motor and a motor valve body; a projecting shaft of the motor is equipped with a driving gear, the motor valve body is internally equipped with a decelerating mechanism and an overdrive clutch mechanism, the rotation of the motor is transmitted to a rack-shaped valve rod to realize the opening operation of the valve, the decelerating mechanism is a four grade speed varying mechanism, and the transmission manner is: driving gear->driving a first grade duplicate gear->a second duplicate gear->a third duplicate gear->a fourth duplicate gear->a gear and an overdrive ratchet gear, a plane cam and an intermediate gear to rotate, when the intermediate gear rotates to mesh with the duplicate gears, the intermediate gear drives the duplicate gears to rotate to ensure the rack-shaped valve rod to carry out displacement to integrate with a valve core which is internally sheathed with a tower-shaped spring and a rubber sealing jacket, the head of the valve core is embedded into valve petals and the closing operation of the valve can be realized by the elasticity of the tower-shaped spring. The invention can ensure the reliability and service life of the motor valve in use.

Description

The overdrive motor valve that has automatic engagement and disengaging function

Technical field

The present invention relates to a kind of motor valve, refer in particular to a kind of overdrive motor valve that is mainly used on IC-card family expenses diaphragm gas meter or the wireless diaphragm gas meter as the gas safety cut-off control valve.

Background technique

As the motor valve that uses on the IC-card family expenses diaphragm gas meter, the fitness for purpose valve switch opens and closes fast, sensitive reliable, durable power saving.And be used for motor valve on IC-card family expenses diaphragm gas meter or the wireless diaphragm gas meter at present, its internal structure is more complicated mostly, the manufacture cost height, exist electric quantity consumption big, often lost efficacy, disadvantage such as working life is short, influence the normal use of combustion gas.

Summary of the invention

The objective of the invention is to overcome the above-mentioned defective that prior art exists, a kind of overdrive motor valve that has automatic engagement and break away from function is provided, it guarantees motor valve reliability and working life in use.

For achieving the above object, the solution that the present invention takes is: a kind of overdrive motor valve that has automatic engagement and break away from function, it comprises motor and motor valve body, on the projecting shaft of motor driving gear is housed, reducing gear and overrunning type clutch mechanism are housed in the motor valve body, meshed transmission gear is passed through in the rotation of motor, deceleration through reducing gear, transmit motion to tooth bar shape valve rod, realize the breakdown action of motor valve valve, reducing gear is the level Four speed changing structure, its transfer mode is: driving gear drives first order duplicate gear, first order duplicate gear drives second level duplicate gear, second level duplicate gear drives third level duplicate gear, third level duplicate gear drives fourth stage reduction gear, fourth stage reduction gear is by in-house gear of coaxial drive overrunning type clutch and override type ratchet, face cam and carrier gear rotation, when carrier gear forwards to when meshing with duplicate gear, drive the duplicate gear rotation and make tooth bar shape displacement of valve rod, tooth bar shape valve rod and spool fuse, valve core upper sleeve is gone into turriform spring and rubber seal sheath, the spool head embeds flap, relies on the closing motion of the elastic force realization motor valve valve of turriform spring.

These characteristics that have the overdrive motor valve of automatic engagement and disengaging function are: (1) overrunning type clutch mechanism has a direction driving, surmounts the characteristics of motion in another direction; And have and guarantee that moment drives and surmount the performance of property at once of speed, and compact structure, non-return reliably, oppositely free light; Stable and reliable operation guarantees the open and close of valve.(2) valve can have self-holding ability in any enable possition, need not the power supply support, and the required power consumption of electric motor starting is extremely low during unlatching, has prolonged power using time, has guaranteed the working life of motor valve.(3) the required electric weight of valve closing is lower, and anti-aggressive strong, and valve can realize that in enable possition arbitrarily moment closes, and closing of valve mainly is the elastic force that relies on the turriform spring.(4) spool travel distance, valve opening degree is big, can reduce the loss of total pressure of gas meter integral body.

This overdrive motor valve that has automatic engagement and disengaging function has thoroughly overcome unfavorable and other disadvantages in IC-card family expenses diaphragm gas meter or the use of wireless diaphragm gas meter, guaranteed the normal use of combustion gas, prolong the working life of motor valve and battery supply simultaneously, alleviated maintenance pressure.

Description of drawings

Fig. 1 is the general assembly drawing of present embodiment.

Fig. 2 is the reducing gear planimetric map.

Fig. 3 is an overrunning type clutch mechanism planimetric map.

Among the figure: 1, motor box, 2, motor, 3, the motor lid, 4, the motor valve body, 5, seal ring, 6, cover plate, 7, driving gear, 8, fourth stage reduction gear, 9, third level duplicate gear, 10, second level duplicate gear, 11, first order duplicate gear, 12, gear, 13, override type ratchet, 14, face cam, 15, carrier gear, 16, duplicate gear, 17, tooth bar shape valve rod, 18, spool, 19, turriform spring, 20, flap, 21, the rubber seal sheath.

Embodiment

Referring to Fig. 1-Fig. 3, a kind of overdrive motor valve that has automatic engagement and break away from function, it comprises motor 2 and motor valve body 4, driving gear 7 is housed on the projecting shaft of motor 2, reducing gear and overrunning type clutch mechanism are housed in the motor valve body 4, meshed transmission gear is passed through in the rotation of motor 2, deceleration through reducing gear, transmit motion to tooth bar shape valve rod 17, realize the breakdown action of motor valve valve, reducing gear is the level Four speed changing structure, its transfer mode is: driving gear 7 drives first order duplicate gear 11, first order duplicate gear 11 drives second level duplicate gear 10, second level duplicate gear 10 drives third level duplicate gear 9, third level duplicate gear 9 drives fourth stage reduction gear 8, fourth stage reduction gear 8 is by in-house gear 12 of coaxial drive overrunning type clutch and override type ratchet 13, face cam 14 and carrier gear 15 rotations, when carrier gear 15 forwards to duplicate gear 16 engagements, drive duplicate gear 16 rotations and make 17 displacements of tooth bar shape valve rod, tooth bar shape valve rod 17 fuses with spool 18, be inserted in turriform spring 19 and rubber seal sheath 21 on the spool 18, spool 18 heads embed flap 20, rely on the closing motion of the elastic force realization motor valve valve of turriform spring 19.

Referring to Fig. 1, described motor 2 is contained in the motor box 1, and with motor lid 3 that motor 2 is fixing, motor box 1 is fixed on the motor valve body 4.

Referring to Fig. 1, described motor valve body 4 usefulness seal rings 5, cover plate 6 are sealed.

Referring to Fig. 1, described motor 2 is drag cup DC servo intrinsic safety type anti-explosion motors.

This overdrive motor valve utilization overrunning type clutch mechanism driving principle control motor valve that has automatic engagement and disengaging function is finished fast and is opened and closed action, also the stablizing with reliability of open and close of valve has also been made improvement simultaneously.

Its working principle is summarized as follows: when intelligence control circuit sends out the valve instruction, motor 2 turns clockwise, reducing gear work, the overrunning type clutch mechanism of motor valve does to surmount motion, drives face cam 14 and carrier gear 15 rotations, and with duplicate gear 16 engagement, make duplicate gear 16 rotations, thereby drive profile of tooth valve rod 17, spool 18 and flap 20 displacements, realize the unlatching of valve, after circuit was received the signal that puts in place, valve events was finished out in motor 2 stalls; In opening process, turriform spring 19 is compressed, and the savings energy is ready for use on the pass valve; Behind the valve opening, because the non-return effect of the in-house ratchet 13 of overrunning type clutch and face cam 14, need not the power supply support and make valve be in to control oneself reliably to open the valve state; When intelligence control circuit sends pass valve instruction, promptly stop after one counter-rotating of motor 2 moments do, overrunning type clutch mechanism easily frees non-return effect, the face cam 14, the carrier gear 15 that drive in the other direction in the overrunning type clutch mechanism are thrown off with duplicate gear 16, because the energy storage power of turriform spring 19 discharges, make tooth bar shape valve rod 17, spool 18, rubber flap 20 upstream shifts, moment is finished the pass valve events.

Overdrive motor valve employing drag cup DC servo intrinsic safety type anti-explosion motor that this has automatic engagement and breaks away from function, service voltage is low and wide, and endure is reliable when low voltage, and can be used in the explosion-proof place of needs.Highly versatile just can be opened bore under less than the power of 1W

Valve, its maximum working (operation) pressure (MWP) can reach 0.8MPa.

Claims

1, a kind of overdrive motor valve that has automatic engagement and break away from function, it comprises motor (2) and motor valve body (4), it is characterized in that: driving gear (7) is housed on the projecting shaft of motor (2), reducing gear and overrunning type clutch mechanism are housed in the motor valve body (4), meshed transmission gear is passed through in the rotation of motor (2), deceleration through reducing gear, transmit motion to tooth bar shape valve rod (17), realize the breakdown action of motor valve valve, reducing gear is the level Four speed changing structure, its transfer mode is: driving gear (7) drives first order duplicate gear (11), first order duplicate gear (11) drives second level duplicate gear (10), second level duplicate gear (10) drives third level duplicate gear (9), third level duplicate gear (9) drives fourth stage reduction gear (8), fourth stage reduction gear (8) is by in-house gear of coaxial drive overrunning type clutch (12) and override type ratchet (13), face cam (14) and carrier gear (15) rotation, when carrier gear (15) forwards to duplicate gear (16) engagement, drive duplicate gear (16) rotation and make tooth bar shape valve rod (17) displacement, tooth bar shape valve rod (17) fuses with spool (18), be inserted in turriform spring (19) and rubber seal sheath (21) on the spool (18), spool (18) head embeds flap (20), relies on the closing motion of the elastic force realization motor valve valve of turriform spring (19).

2, the overdrive motor valve that has automatic engagement and break away from function according to claim 1, it is characterized in that: described motor (2) is contained in the motor box (1), with motor lid (3) that motor (2) is fixing, motor box (1) is fixed on the motor valve body (4).

3, the overdrive motor valve that has automatic engagement and break away from function according to claim 1, it is characterized in that: described motor valve body (4) is sealed with seal ring (5), cover plate (6).

4, the overdrive motor valve that has automatic engagement and break away from function according to claim 1, it is characterized in that: described motor (2) is a drag cup DC servo intrinsic safety type anti-explosion motor.