CN2399571Y

CN2399571Y - Ball valve electric actuator

Info

Publication number: CN2399571Y
Application number: CN 99249695
Authority: CN
Inventors: 汤福良; 颜奇光; 舒斌
Original assignee: YIYANG PATENT TECHNOLOGY DEVELOPMENT RESEARCH CENTRE HUNAN PROV
Current assignee: YIYANG PATENT TECHNOLOGY DEVELOPMENT RESEARCH CENTRE HUNAN PROV
Priority date: 1999-11-10
Filing date: 1999-11-10
Publication date: 2000-10-04
Anticipated expiration: 2009-11-10

Abstract

The utility model discloses a ball valve actuating device with non-contact magnetic-control position limiting, which integrates self control electric operation and manual operation, and comprises a valve body, a valve core, a rotating shaft of a ball valve, a drive device, a position limiting device, a speed-reducing box, and a transmission shaft, wherein, the speed-reducing box is fixed on the valve body by a support frame of the speed-reducing box; the drive device adopts a direct current low-voltage motor; the position limiting device is a non-contact magnetic-control position limiting device; namely, two static hall elements which mutually form an angle of 90 DEG are arranged on the speed-reducing box by support frames of the hall elements; an arc narrow groove is also arranged on the speed-reducing box; a magnetic conductive convex piece is correspondingly arranged on a manual hand wheel; the speed-reducing box is a worm wheel speed-reducing system; a key groove of a transmission pin is arranged on the worm wheel of the speed-reducing box; a transmission pin key groove is correspondingly fixed on the transmission shaft; the manual hand wheel is fixed on the upper end of the transmission shaft.

Description

A kind of ball valve electric performance device

The utility model relates to a kind of actuator of ball valve, and specifically a kind of contactless magnetic control is spacing, and it is the ball valve actuating device of one that auto-controlled electric reaches manually.

Existing ball valve actuating device, be generally pneumatic, electronic and manual three kinds, when realizing automatic control, the first two plants equal rate of fault height, cost height, must there be cushion gas, power supply could after power failure, " open " or " pass " valve, wherein pneumatic actuating device, because of needs pressurized air start source, again because the humidity of the air problem makes the pressurized air water content big, cause the accurate changeover valve core in the pneumatic actuating device owing to amass accumulated water, frequently break down, the alluvial of greasy dirt is arranged in addition, it is not enough opening travel often to occur, close not tight, even tripping; And electric performance device has servo adjustment system because of domestic present product, and electronic device and printed circuit board (PCB) are arranged, and to having made the environmental requirement height, and costs an arm and a leg, and is difficult for being received by the user.

The purpose of this utility model provides and a kind ofly can realize automatic control and manual, contactless spacing ball valve electric performance device.

The utility model is to realize its goal of the invention by the following technical solutions, a kind of ball valve electric performance device, it comprises valve body, spool, ball valve rotatingshaft, drive unit, limit stoper, speed reducer, transmission shaft, speed reducer is fixed on the valve body by gearbox mount, and drive unit adopts the dc low-voltage motor; Limit stoper is contactless magnetic control limit stoper; Speed reducer is the worm gear reducer system; Have the driving pin keyway on the worm gear in speed reducer, be fixed with the transmission pin key on the corresponding transmission shaft, be fixed with manual handwheel in the transmission shaft upper end.

Described contactless magnetic control limit stoper adopts Hall element, promptly by the Hall element support two mutual static at an angle of 90 Hall elements is housed on speed reducer, and is provided with the narrow groove of an arc, is provided with a magnetic conduction lug corresponding to manual handwheel.

Because adopt above technological scheme, the utility model has ideally been realized goal of the invention, when having reached automatic control, can also satisfy under the situation of not having the no source of the gas of electricity with operating manually, it is low to have rate of fault, and volume is little, in light weight, easy to maintenance, characteristics such as cost is low, and is easy to use.

Accompanying drawing is a structural representation of the present utility model.

Below in conjunction with accompanying drawing the utility model is described in further detail: a kind of ball valve electric performance device, it comprises valve body 19, spool 18, ball valve rotatingshaft 17, drive unit, limit stoper, speed reducer 15, transmission shaft 16, speed reducer 15 is fixed on the valve body 19 by gearbox mount 11, and drive unit adopts dc low-voltage motor 4; Limit stoper is contactless magnetic control limit stoper, promptly by Hall element support 3 two mutual static at an angle of 90 Hall elements 2 is housed on speed reducer 15, and is provided with the narrow groove of an arc, is provided with a magnetic conduction lug 20 corresponding to manual handwheel 1; Speed reducer 15 is the worm gear reducer system, has the driving pin keyway on the worm gear B9 in speed reducer 15, is fixed with transmission pin key 12 on the corresponding transmission shaft 16, is fixed with manual handwheel 1 in transmission shaft 16 upper ends; Be with return spring 14 in transmission shaft 16 lower ends.

When realizing automatic control, dc low-voltage motor 4 gets electric rotation and drives worm screw B8, worm gear B9 by worm screw A5, worm gear A7 and rotates, because the effect of return spring 14, transmission pin key 12 on the transmission shaft 16 falls in the driving pin keyway of worm gear B9, driving transmission shaft 16 rotates, drive spool 18 rotations through ball valve rotatingshaft 17 again, realize the valve "on" and "off"; When transmission shaft 16 rotates, drive manual handwheel 1 rotation simultaneously, when the magnetic conduction lug 20 on the manual handwheel 1 enters the narrow groove of Hall element 2 arcs, because of the magnetic circuit short circuit, make Hall element 2 be output as zero, the 4 dead electricity stalls of dc low-voltage motor, spool 18 rests on "open" state; When dc low-voltage motor 4 once more when electric, this moment, dc low-voltage motor 4 was by speed reducer 15, transmission shaft 16, after drive spool 18 is done to turn round 90 °, because of the magnetic conduction lug 20 on the manual handwheel 1 enters the narrow groove of another Hall element 2 arcs, make dc low-voltage motor 4 dead electricity stall once more, spool 18 rests on "off" state.

When the needs that have a power failure are manual, upwards mention manual handwheel 1, transmission pin key 12 is along with transmission shaft 16 is mentioned disengaging driving pin keyway, can indicate this moment according to magnetic conduction lug 20, change in the contrary conrotatory of two Hall element 2 intercropping, drive spool 18 rotations, realize manual "on" and "off".After manually-operable is finished, unclamp manual handwheel 1, effect because of return spring 14, transmission pin key 12 is pressed on the worm gear B9, work as power up, dc low-voltage motor 4 rotates, after worm gear B9 and then turns an angle, transmission pin key 12 falls in the driving pin keyway on the worm gear B9 automatically, drives transmission shaft 12, spool 18 and manual handwheel 1 and forwards valve to and " open " or the off-position.

Claims

1, a kind of ball valve electric performance device, it comprises valve body [19], spool [18], ball valve rotatingshaft, [17] drive unit, limit stoper, speed reducer [15], transmission shaft [16], speed reducer [15] is fixed on the valve body [19] by gearbox mount [11], it is characterized in that:

(1), described drive unit adopts dc low-voltage motor [4];

(2), described limit stoper is contactless magnetic control limit stoper;

(3), described speed reducer [15] is the worm gear reducer system;

(4), the worm gear B[9 in speed reducer [15]] on have the driving pin keyway, be fixed with transmission pin key [12] on the corresponding transmission shaft [16], be fixed with manual handwheel [1] in transmission shaft [16] upper end.

2, according to the described a kind of ball valve electric performance device of claim 1, it is characterized in that described contactless magnetic control limit stoper adopts Hall element [2], promptly go up and two mutual static at an angle of 90 Hall elements [2] are housed by Hall element support [3] at speed reducer [15], and be provided with the narrow groove of an arc, be provided with a magnetic conduction lug [20] corresponding to manual handwheel [1].

3,, it is characterized in that being with return spring [14] in transmission shaft [16] lower end according to the described a kind of ball valve electric performance device of claim 1.