CN201396505Y

CN201396505Y - Pneumatic actuator for motor type multi-turn valve

Info

Publication number: CN201396505Y
Application number: CN2009201060822U
Authority: CN
Inventors: 黄登平; 林年泽
Original assignee: 黄登平
Current assignee: Shanghai Petrochemical Mechanical & Electrical Equipment Co., Ltd. Hong Falter
Priority date: 2009-03-11
Filing date: 2009-03-11
Publication date: 2010-02-03
Anticipated expiration: 2019-03-11

Abstract

The utility model relates to opening adjustment of gate valves, disconnecting valves, ball valves, butterfly valves and other valves, can be used for changing a hand-operated valve to a pneumatically-operated valve, and is suitable for the field of explosion protection and the field with shape requirement. The utility model provides a pneumatic actuator for a motor type multi-turn valve particularly and comprises a bracket. A lower cover is connected with the upper part the bracket, an upper cover is connected with the upper part of the lower cover, a hand wheel is arranged at the upper part of the upper cover and is connected with a valve-stem nut arranged inside the lower cover through a connecting rod, the valve-stem nut is connected with a motor arranged inside the upper cover throughan inner gear arranged on one side of the interior of the lower cover, and a control case device is connected with the motor through a pneumatic joint. Compared with the prior art, the pneumatic actuator has the characteristics of simple structure, stable performance, wide application, convenient inspection and repair, etc.

Description

Many turning valves of motor type pneumatic actuator

Technical field

The utility model relates to the aperture of handling gate valve, stop valve, ball valve and butterfly valve valves such as (configuration turbine boxes) to be regulated, also can be used for repacking the manually-operable valve into pneumatic operation, be applicable to explosion-proof and the field of body requirement is arranged, a kind of many turning valves of motor type pneumatic actuator specifically is provided.

Background technique

At present, the cylinder type final controlling element is the straight journey operation, valve wide open, complete shut-down two valve position can only be set, and can not any valve position stop, keeping in the centre; The cylinder type final controlling element is when source of the gas interrupts, and valve position is returned the Default Value state, is unfavorable for satisfying continuously producing; For large bore valves, cylinder type final controlling element volume is big, quality heavy, and difficulty is installed in transportation.

Summary of the invention

The utility model is at above deficiency, a kind of simple in structure, stable performance is provided, is widely used, overhauls many turning valves of motor type pneumatic actuator easily.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of many turning valves of motor type pneumatic actuator, comprise support, described support top is connected with down cover, described cover down top connects goes up cover, the described cover top of going up is provided with handwheel, described handwheel is connected in down the interior Stem Mut of cover by connecting rod, and described Stem Mut is gone up the interior motor that is provided with of cover by the internal gear connection of a side in covering down, and described motor passes through the gas joint and connects the control box device.

Described control box device comprises control box, and described control box top is provided with suction port and air outlet, and described suction port place is provided with the hand rotary valve, and it is handled the bigeminy part by source of the gas and connects described air outlet.

Be provided with limited valve in the last cover, described limited valve below is respectively arranged with indicating arm and handle.Pneumatic motor adopts leaf structure, and have simple in structure, stable performance, be widely used, overhaul characteristics such as convenient, owing to be high rotating speed structure, thereby the cranking performance rating height, zero rotating speed starting torque is big.

Limited valve makes valve during the position, in time cut off the source of the gas of pneumatic motor when standard-sized sheet, complete shut-down, makes the valve plate position suitable, the protection valve sealing face, and save consumption of air source.

Be equipped with independently control box, realize artificial isolated operation.

Be equipped with handwheel and switch handle, in source of the gas breaks down, can rotate handwheel at any time, reach the switch purpose.

Adopt the rise-fall type indicating arm, synchronous with valve switch, the operator can read the valve opening degree at the scene very easily on graduated scale, very directly perceived.

Many turning valves of motor type pneumatic actuator of the present utility model, it is rotated by pneumatic motor actuate valve stem nut, and novel driving Pneumatic actuator that circle round with straight line switch valve function more, overcome the limitation of standard-sized sheet, complete shut-down two formula strokes, realize many revolutions, total travel, the open and close of valve position arbitrarily, and when source of the gas interrupts, still can keep instant valve position state constant, for large bore valves, volume, quality are far smaller than the cylinder type final controlling element.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a kind of structural representation of many turning valves of motor type pneumatic actuator;

Fig. 2 is a kind of control box apparatus structure schematic representation of many turning valves of motor type pneumatic actuator.

1, support, 2, following cover, 3, Stem Mut, 4, internal gear, 5, motor, 6, go up cover, 7, handwheel, 8, limited valve, 9, indicating arm, 10, handle, 11, the gas joint, 12, the hand rotary valve, 13, source of the gas is handled the bigeminy part, and 14, control box, 15, connecting rod, 16, suction port, 17, the air outlet.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.

Provide a most preferred embodiment below:

A kind of many turning valves of motor type pneumatic actuator, comprise support 1, described support 1 top is connected with down cover 2, described cover down 2 tops connect goes up cover 6, described cover 6 tops of going up are provided with handwheel 7, described handwheel 7 is connected in down the Stem Mut 3 that covers in 2 by connecting rod 15, and described Stem Mut 3 connects the motors 5 of going up cover 6 interior settings by the internal gear 4 that covers 2 interior sides down, and described motor 5 connects the control box devices by gas joint 11.

Described control box device comprises control box 14, and described control box 14 tops are provided with suction port 16 and air outlet 17, and described suction port 16 places are provided with hand rotary valve 12, and it is handled bigeminy part 13 by source of the gas and connects described air outlet 17.

Be provided with limited valve 8 in the last cover 6, described limited valve 8 belows are respectively arranged with indicating arm 9 and handle 10.

Control box 14 is installed in the place that valve accessories makes things convenient for the workman to operate, and suction port 16 is connected with source of the gas, and air outlet 17 is connected with gas joint 11.During operation, manually rotate hand rotary valve 12, handle bigeminy part 13 cleaned air passes through source of the gas and be transported to motor 5, it is started working, drive internal gear 4 by the small gear on it and rotate,, make the valve rod on the valve make the lifting straight line motion by 3 rotations of internal gear 4 actuate valve stem nuts, or drive Worm gear case input shaft (ball valve, dish valve), thereby realize the unlatching of valve or close.

Accurate position when limited valve 8 limits valve wide open, complete shut-down, the reliability of guarantee valve seal, debugging puts in place in the time of need installing first with valve.

Handle 10 can be realized pneumatic-manual switchover.When using pneumatic operation, handle 10 must be moved to pneumatic position, operator rotary valve 12 is controlled the final controlling element action then, observe handwheel 7 sense of rotation and indicating arm 9, when handwheel 7 clockwise rotates for closing, otherwise for driving valve, indicating arm 9 is valve opening on graduated scale, and end of operation moves to intermediate stop position with the handle of hand rotary valve; When using manually-operable, handle 10 must be moved to manual position, directly rotate handwheel 7 then, just can drive valve opening and closing, handwheel 7 sense of rotation are with to operate the common manual valve in full accord, when clockwise rotating for closing, otherwise for driving valve.

Many turning valves of motor type pneumatic actuator of the present utility model is a kind ofly to be rotated by pneumatic motor actuate valve stem nut, and novel driving Pneumatic actuator that circle round with straight line switch valve function more, overcome the limitation of standard-sized sheet, complete shut-down two formula strokes, many revolutions, total travel, the open and close of valve position have arbitrarily been realized, and when source of the gas interrupts, still can keep instant valve position state constant.

Pneumatic motor 5 adopts leaf structures, and have simple in structure, stable performance, be widely used, overhaul characteristics such as convenient, owing to be high rotating speed structure, thereby the cranking performance rating height, zero rotating speed starting torque is big.

Limited valve 8 makes valve during the position, in time cut off the source of the gas of pneumatic motor when standard-sized sheet, complete shut-down, makes the valve plate position suitable, the protection valve sealing face, and save consumption of air source.

Be equipped with independently control box 14, realize artificial isolated operation.

Be equipped with handwheel 7 and switch handle 10, in source of the gas breaks down, can rotate handwheel 7 at any time, reach the switch purpose.

Adopt rise-fall type indicating arm 9, synchronous with valve switch, the operator can read the valve opening degree at the scene very easily on graduated scale, very directly perceived.

Adopt air as power source, have the characteristics of essential safety, be applicable to various explosion-proof occasions.

Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.

Claims

1, a kind of many turning valves of motor type pneumatic actuator, comprise support, described support top is connected with down cover, described cover down top connects goes up cover, it is characterized in that the described cover top of going up is provided with handwheel, described handwheel is connected in down the interior Stem Mut of cover by connecting rod, described Stem Mut is gone up the interior motor that is provided with of cover by the internal gear connection of a side in covering down, and described motor passes through the gas joint and connects the control box device.

2, many turning valves of motor type pneumatic actuator according to claim 1, it is characterized in that, described control box device comprises control box, described control box top is provided with suction port and air outlet, described suction port place is provided with the hand rotary valve, and it is handled the bigeminy part by source of the gas and connects described air outlet.

3, many turning valves of motor type pneumatic actuator according to claim 1 is characterized in that, described going up in the cover is provided with limited valve, and described limited valve below is respectively arranged with indicating arm and handle.