CN2597800Y

CN2597800Y - Gas valve starter

Info

Publication number: CN2597800Y
Application number: CNU022917403U
Authority: CN
Inventors: 宣国平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-16
Filing date: 2002-12-16
Publication date: 2004-01-07
Anticipated expiration: 2012-12-16

Abstract

The utility model relates to a gas valve lifting device which can avoid the valve opening or closing in the initial stage of valve operating with tiny power, which consists of a main rack (5) which is provided with a cover board (6), the main rack (5) is also provided with an exporting gear (7) and a driving gear (3) being drove by a motor (7), the driving gear (3) is away from the exporting gear (7), the cover board (6) is provided with a cam shaft (61) which is sleeved with a movable centering block (9), one end of the centering block (9) is fixed with a pushing shaft one (91) and another end is fixed with a pushing shaft two (92), the pushing shaft I is sleeved with a movable driven gear one (4) which is meshed with the driving gear (3), the pushing shaft two is sleeved with a movable driven gear two (10) which is meshed with the driving gear (3). The utility model is suitable for driving gear (3).

Description

The air valve start-stop device

Technical field

The utility model belongs to the start-stop device of the assembly of valve, particularly air valve.

Background technique

The start-stop device of known a kind of air valve, have this driving gear of motor-driven driving gear directly with the output gear engagement, output gear is fixedly connected with the output wheel shaft and is fixedly connected with screw mandrel, the positive and negative rotation of screw mandrel, the closure or openness of drive valve on it.Because this known air valve start-stop device driving gear is direct and the output gear engagement; the screw mandrel that driving has load rotates; the former big defective that exists: drive valve and close the very big starting force of valve initial stage needs; need very big starting static current of lcd thus; but usually electric current is limited, so occur that electric current can not satisfy the starting demand and the phenomenon that can't close after causing valve to open or to open through regular meeting.

Summary of the invention

The utility model will solve known air valve start-stop device and hold the problem that valve can cause valve to open or to cut out with closing the valve initial stage very big starting force of needs, a kind of air valve start-stop device of the present utility model is provided for this reason, start-stop device of the present utility model need not big starting force driving valve and close the valve initial stage, can avoid valve to open or to close.

For addressing the above problem, the technological scheme that the utility model air valve start-stop device adopts is to be provided with main frame and cover plate, main frame is provided with output gear and motor-driven driving gear, be fixedly connected with the output wheel shaft on this output gear and be fixedly connected with screw mandrel on it, its special way is that described driving gear and output gear leave a distance, on described cover plate, be provided with protruding axle, be with centering block pivotly on the protruding axle, centering block one end is fixedly connected with dial axis I, centering block the other end is fixedly connected with dial axis II, be with driven gear I on the dial axis I pivotly and be engaged in described driving gear, be with driven gear II on the dial axis II pivotly and be engaged in described driving gear.

Driven gear I in the utility model and driven gear II and driving gear engagement, driving gear and output gear leave a distance but not engagement, driven gear I is placed in the dial axis I of centering block one end, and driven gear II is placed in the dial axis II of the centering block the other end, and the trepanning at centering block middle part is placed in the protruding axle of cover plate.When the motor driving driving gear rotates counterclockwise, driven gear I is clockwise rotated, simultaneously driven gear I being overlapped dial axis I together with it counterclockwise stirs, this moment, centering block rotated counterclockwise an angle, driven gear I just relies on output gear and output gear engagement, and output gear is rotated counterclockwise.The opposite direction situation, when promptly driving gear clockwise rotated, centering block clockwise rotated an angle, and driven gear I leaves output gear, and driven gear II relies on output gear and output gear engagement, and output gear is clockwise rotated.Contrary (or suitable) hour hands of output gear or rotate along (or contrary) hour hands are realized the unlatching of valve or are closed.

The utility model is owing to be provided with driven gear I and the driven gear II that is engaged in driving gear, be provided with its two end part of centering block and respectively have dial axis, two driven gears are placed in a dial axis respectively, driving gear counterclockwise or clockwise rotate, make a wherein driven gear closing in output gear, drive output gear counterclockwise or clockwise rotate, realize valve opening or close, so the utility model does not need very big starting force driving valve or close the valve initial stage, reason is, the closing when rotating of one driven gear drives output gear in output gear and rotates, the rotation inertia force of driving gear and driven gear adds lasting rotatory force, can easily drive the output gear with load and rotate; And known air valve start-stop device, driving gear meshes with output gear all the time, and is initial in starting, just needs very big starting force.The utility model is being driven valve or is being closed the valve initial stage, need not very big starting force, can avoid occurring the situation that valve can't be opened or close.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is that the utility model is overlooked direction partial structurtes schematic representation.

Embodiment

The air valve start-stop device, be provided with motor 2 in the chamber of main frame 5 and bonnet 1 combination, be provided with cover plate 6 above the main frame 5, main frame 5 is provided with the driving gear 3 of output gear 7 and motor 2 drivings, driving gear 3 leaves a distance with output gear 7, be fixedly connected with output wheel shaft 8 on the output gear 7 and be fixedly connected with screw mandrel on it, cover plate 6 is provided with down the protruding axle of stretching 61, be with centering block 9 pivotly on the protruding axle 61, centering block 9 one ends are fixedly connected with down the dial axis I91 that stretches, centering block 9 the other end are fixedly connected with down the dial axis II92 that stretches, be with driven gear I4 on the dial axis I91 pivotly and be engaged in driving gear 3, be with driven gear II10 on the dial axis II92 pivotly and be engaged in driving gear 3.

Claims

1, the air valve start-stop device, have main frame (5) and cover plate (6), main frame (5) is provided with the driving gear of output gear and motor (2) driving, be fixedly connected with the output wheel shaft on this output gear and be fixedly connected with screw mandrel on it, it is characterized in that described driving gear (3) and output gear (7) leave a distance, on described cover plate (6), be provided with protruding axle (61), be with centering block (9) pivotly on the protruding axle (61), centering block (9) one ends are fixedly connected with dial axis I (91), centering block (9) the other end is fixedly connected with dial axis II (92), be with driven gear I (4) on the dial axis I (91) pivotly and be engaged in described driving gear (3), be with driven gear II (10) on the dial axis II (92) pivotly and be engaged in described driving gear (3).