CN2332857Y

CN2332857Y - Improved electric valve with detecting device

Info

Publication number: CN2332857Y
Application number: CN 98215360
Authority: CN
Inventors: 潘柯; 黄亮
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-12
Filing date: 1998-06-12
Publication date: 1999-08-11
Anticipated expiration: 2008-06-12

Abstract

The utility model relates to an improved electric valve with a detecting device, which is composed of a valve body 1, a spring 2, a valve plate 12, a control piston 3, a motor 6, a driving gear 7 arranged on a shaft of the motor, a driven gear 8 and a screw 11 which matches with the control piston 3. The utility model is characterized in that the driven gear 8 is provided with a sensing element 9, a relevant position on the circumference of a cover plate of the valve body 1 is provided with a sensor 10, or the side wall of the control piston 3 is provided with an induction element 4, and a relevant position of the side wall of a casing of the valve body is provided with a sensor 5. The utility model has the advantage of controlling a large valve by a small motor, which enables the utility model to be especially adapted to occasions of computer automatic control.

Description

Improve the electric valve with detection device of structure

The utility model relates to electric valve, particularly is applied to have in the automatic water supply system electric valve of detection device.

The electric valve that uses in the water system in the prior art does not generally possess detection device, and is to use solenoid valve to control.During energising, solenoid valve opens (or cutting out), during outage, and closed electromagnetic valve (or opening).If think to keep for a long time the open mode of solenoid valve, just must long-time energising.When situations such as accident power failure or sudden power took place, solenoid valve promptly interrupted original working state.And can't confirm that at ordinary times solenoid valve is in out state or off status.The inventor had once applied for " a kind of electric valve with detection device " application number 97245051.3 to Patent Office of the People's Republic of China for this reason.By the motor direct-drive valve plate, overcome the deficiency of solenoid valve substantially.But,, need more powerful motor driving for the valve of larger caliber.Particularly when situations such as power failure took place, it was just very difficult to keep long adhesive with battery.Therefore, the purpose of this utility model has been proposed.Change above situation.

The purpose of this utility model is a kind of electric valve with detection device that improves structure of design.

The purpose of this utility model realizes according to structure described below, this kind improves the electric valve with detection device of structure, mainly has valve body 1, spring 2, valve plate 12, control piston 3, driving gear 7 on motor 6 and the axle thereof, driven gear 8 and the screw rod 11 that cooperates with control piston 3, it is characterized in that on driven gear 8, being provided with a sense cell 9, the corresponding position of the cover plate circumference on valve body 1 is provided with sensor 10, and perhaps the sidewall at control piston 3 is provided with sense cell 4, in the corresponding position of the housing sidewall of valve body sensor 5 is set.

The utility model has the advantages that the motor or the bigger valve of DC MOTOR CONTROL that adopt smaller power, because the characteristics of gear matched itself, can keep original working state during power failure, sensor and sense cell cooperate the formation detection device, detection and Presentation Function with on off state, the occasion that is particularly suitable for computer controlled automatic is used.

The following drawings explanation, accompanying drawing 1 is a structural representation of the present utility model, accompanying drawing 2 is that the A of accompanying drawing 1 is to view.Each sequence number in the accompanying drawings is: 1, valve body, 2, spring, 3, control piston, 4, sense cell, 5, sensor, 6, motor, 7, driving gear, 8, driven gear, 9, sense cell, 10, sensor, 11, screw rod, 12, valve plate.

The embodiment who provides below in conjunction with accompanying drawing describes structure of the present utility model and use in detail.With reference to accompanying drawing, plant the electric valve that improves structure with detection device, in the valve body 1 of this valve, has a valve plate 12 that has little through hole on it, this is a pressing plate above valve plate, this pressing plate has hole seam in the position of the through hole of valve plate, a spring 2 is arranged on pressing plate, reset for valve plate 12.The opposite side of valve body is the control valve part, is that a through hole is communicated with the water chamber of valve body 1 below the control piston 3, and other has a hole to be communicated with the chamber with spring 2.Motor 6 is assemblied in the cavity that seals relatively, on its axle driving gear 7 is arranged, this driving gear and driven gear 8 engagements, and driven gear 8 drives the screw rod 11 that cooperates with control piston 3 and rotates.When screw rod 11 rotated, control piston 3 was reciprocating in its control valve pocket.Driven gear 8 is provided with a sense cell 9, cover plate circumference on valve body 1 be provided with sensor 10 with driven gear 8 corresponding positions, perhaps the sidewall at control piston 3 is provided with sense cell 4, and in the corresponding position of the housing sidewall of valve body sensor 5 is set.Reliable and convenient in order to use, driving gear 7 and driven gear 8 adopt worm gear and worm drive.When having a power failure, it is constant to utilize himself latching characteristics to keep the state of opening or closing of valve.The signal of sensor 10 or the induction of 5 places is realized control automatically by after the Computer Processing.Its working procedure is when control piston 3 during in the position of closing, the cavity sealing of spring will be had on the through hole of its underpart and the valve body, at this moment, aperture on the valve plate 12 only communicates with the chamber that spring is arranged of main valve body 1, under the acting in conjunction of hydraulic pressure and spring, valve plate 12 is pressed to the valve seat of main valve, and valve cuts out the most at last.When motor 6 energising, drive control pistons 3 by driving gear 7 driven gears 8 screw rods 11 and move up, at this moment, water through the aperture on the valve plate 12, enter in the control valve pocket, by the aperture release of control piston 3 bottoms.Therefore, valve plate 12 is upwards backed down main valve open under the effect of hydraulic pressure.In the moving up and down of the rotation of main driven gear and/or control piston 3, the actuating signal that sensor moves to it is sent Computer Processing.

Claims

1, a kind of electric valve that improves structure with detection device, this valve mainly has valve body (1), spring (2), valve plate (12), control piston (3), driving gear (7) on motor (6) and the axle thereof, driven gear (8) and the screw rod (11) that cooperates with control piston (3), it is characterized in that on driven gear (8), being provided with a sense cell (9), the corresponding position of the cover plate circumference on valve body (1) is provided with sensor (10), perhaps the sidewall at control piston (3) is provided with sense cell (4), and in the corresponding position of the housing sidewall of valve body sensor (5) is set.

2,, it is characterized in that said driving gear (7) is that the driven gear (8) that worm screw is matched with it is a worm gear according to the described electric valve of claim 1 with detection device.