CN218152595U - Valve device and actuator of valve device - Google Patents

Abstract

The application relates to a valve device and an actuator of the valve device, wherein the valve device comprises a valve and the actuator, the actuator comprises a shell, a motor, an output shaft, a transmission assembly and a positioning shaft, the motor, the output shaft, the transmission assembly and the positioning shaft are arranged in the shell and are sequentially connected in a transmission manner, and the output shaft and a valve rod of the valve are coaxially transmitted; the executor is still including locating circuit board and the rotatory potentiometre in the shell, and rotatory potentiometre is connected with location axle transmission, and the circuit board is connected with rotatory potentiometre to can gather the resistance of rotatory potentiometre. In the process of adjusting the valve through the actuator, the adjusting error can be reduced, and the adjusting precision can be improved.

Description

Valve device and actuator of valve device

Technical Field

The application relates to the technical field of valves, in particular to a valve device and an actuator of the valve device.

Background

The valve device composed of the valve and the actuator is a pipeline element for industrial automation process control, is commonly used for the control and regulation of heating and ventilation charging for users, such as the remote opening and closing (medium connection and cutting) control of pipeline media, and is also suitable for the regulation and control of fluid.

The opening and closing of the valve and the adjustment of the valve position (flow rate through the valve) can be controlled by the actuator, but most of the existing valve devices have the problem of large valve position adjustment control error.

When the valve is adjusted by the actuator, how to reduce the adjustment error and improve the adjustment precision is a technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a valve gear and valve gear's executor can reduce the regulating error, improve the regulation precision at the in-process of adjusting the valve through the executor.

In order to solve the technical problem, the application provides an actuator of a valve device, the valve device comprises a valve and an actuator, the actuator comprises a shell, and a motor, an output shaft, a transmission assembly and a positioning shaft which are arranged in the shell and are sequentially connected in a transmission manner, and the output shaft and a valve rod of the valve are coaxially driven; the actuator further comprises a circuit board and a rotary potentiometer, the circuit board and the rotary potentiometer are arranged in the shell, the rotary potentiometer is in transmission connection with the positioning shaft, the circuit board is connected with the rotary potentiometer, and the resistance of the rotary potentiometer can be collected.

The executor is carrying out the in-process adjusted to the valve, and the output shaft still drives the location axle through drive assembly and rotates when driving valve rod pivoted, and the rotation of location axle can drive rotatory potentiometre and rotate, and the resistance of rotatory potentiometre can be gathered to the circuit board, and then learns the turned angle of location axle, because drive assembly's drive ratio is known, therefore can calculate the turned angle of output shaft, the turned angle of the valve rod of valve promptly. Because the transmission ratio of each transmission connecting part is known, therefore, after the circuit board acquires the resistance of the rotary potentiometer, the rotation angle of the valve rod of the valve can be accurately calculated, and then the valve is accurately adjusted.

Optionally, the transmission assembly includes a first transmission member and a second transmission member, the first transmission member includes a first gear, the second transmission member includes a second gear, the first gear and the second gear are in meshing transmission connection, the first gear is in coaxial transmission connection with the output shaft, and the second gear is in coaxial transmission connection with the positioning shaft.

Optionally, the transmission assembly further comprises at least one third gear meshingly connected between the first gear and the second gear.

Optionally, the first transmission member and the output shaft are connected by a fastener;

or the first transmission piece further comprises an inserting structure coaxial with the first gear, the inserting structure is matched with the output shaft in an inserting mode, and the first gear and the output shaft are circumferentially provided with mutually matched limiting planes;

or, the first transmission piece and the output shaft are of an integrated structure.

Optionally, the rotary potentiometer is provided with an insertion hole, the positioning shaft can be inserted into the insertion hole, and the outer wall of the positioning shaft and the inner wall of the insertion hole are respectively and correspondingly provided with mutually-matched limiting planes.

Optionally, the transmission assembly is further provided with a trigger, the circuit board is further provided with two microswitches, when the motor drives the output shaft to rotate to an angle, the trigger can trigger one of the microswitches, and when the motor drives the output shaft to rotate to an angle, the trigger can trigger the other one of the microswitches.

Optionally, the rotary potentiometer is soldered to the circuit board.

Optionally, the electric vehicle further comprises a battery arranged in the housing, the battery is used for supplying power to the circuit board, a first partition plate is arranged in the housing, the first partition plate divides an inner cavity of the housing into a first cavity and a second cavity, the first cavity is used for installing the battery, and the second cavity is used for installing the motor, the output shaft, the transmission assembly, the positioning shaft, the circuit board and the rotary potentiometer.

Optionally, the motor further comprises a second partition board arranged in the shell, the second partition board divides the second cavity into an upper cavity and a lower cavity, the motor is fixed on the second partition board, and the motor is fixedly arranged on the fourth gear transmission part arranged in the lower cavity and connected with the fourth gear of the output shaft in a transmission manner.

The application also provides a valve device, which comprises a valve and the actuator.

The technical effects of the valve device with the actuator are similar to those of the actuator, and are not described herein again for the sake of brevity.

Drawings

FIG. 1 is an exploded view of an actuator of a valve device provided in accordance with an embodiment of the present application;

FIG. 2 is a schematic structural view of the first transmission member of FIG. 1;

FIG. 3 is a schematic view of the second driving member and the positioning shaft of FIG. 1;

figures 4 and 5 are exploded views of actuators of valve devices provided in two other embodiments;

FIG. 6 is a schematic structural view of the first transmission member of FIG. 5;

FIG. 7 is an exploded view of a valve assembly provided by an embodiment of the present application;

figure 8 is an exploded view of the valve assembly when the transmission assembly includes a third gear.

In fig. 1-8, the reference numerals are illustrated as follows:

100-an actuator; 200-a valve;

1-shell, 11-first baffle, 12-second baffle, 13-first cavity, 14-second cavity;

2, a motor;

3-output shaft, 31-fourth gear;

4-transmission assembly, 41-first transmission piece, 411-first gear, 42-second transmission piece, 421-second gear, 43-third gear, 44-trigger piece, 45-plug hole;

5-positioning the shaft;

6-a circuit board;

7-a rotary potentiometer;

8-a fastener;

9-a gear transmission part;

10-limit plane.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present application, the following detailed description is made with reference to the accompanying drawings and specific embodiments.

The embodiment of the application provides a valve gear's executor 100 and valve gear, wherein, valve gear includes valve 200 and executor 100, valve 200 includes valve body and valve rod, executor 100 includes shell 1 and locates motor 2 and output shaft 3 in the shell 1, the valve body is in an organic whole with 1 snap-on in of the shell of executor 100, prevent that the whole stolen or malicious damage by of executor 100, the valve rod is located the valve body, motor 2 can drive output shaft 3 and rotate, and output shaft 3 can drive the valve rod and rotate, with the aperture of adjusting valve 200. Specifically, the valve rod rotates in a range of 0 ° to 90 °, and when 0 °, the valve 200 is in a closed state, and when 90 °, the valve 200 is in a completely open state, that is, the motor 2 can drive the output shaft 3 to rotate in a range of 0 ° to 90 °.

As shown in fig. 1, the actuator 100 further includes a transmission assembly 4, a positioning shaft 5, a circuit board 6 and a rotary potentiometer 7, specifically, the motor 2, the output shaft 3, the transmission assembly 4, the positioning shaft 5 and the rotary potentiometer 7 are sequentially connected in a transmission manner, the circuit board 6 can control the motor 2 to drive the output shaft 3 to rotate, the output shaft 3 drives the positioning shaft 5 to rotate through the transmission assembly 4, and the positioning shaft 5 and the rotary potentiometer 7 are coaxially driven.

That is to say, in the process of adjusting the valve 200, the output shaft 3 drives the valve rod to rotate and simultaneously drives the positioning shaft 5 to rotate through the transmission assembly 4, the rotation of the positioning shaft 5 can drive the rotary potentiometer 7 to rotate, the circuit board 6 can collect the resistance of the rotary potentiometer 7, and then know the rotation angle of the positioning shaft 5, and since the transmission ratio of the transmission assembly 4 is known, the rotation angle of the output shaft 3, that is, the rotation angle of the valve rod of the valve 200 can be calculated. Because the transmission ratio of each transmission connecting part is known, after the circuit board 6 acquires the resistance of the rotary potentiometer 7, the rotation angle of the valve rod of the valve 200 can be accurately calculated, and then the valve 200 is accurately adjusted, compared with a scheme of adjusting the valve 200 through the number of rotation turns of the motor 2, errors caused by the rotation of the motor 2 or the difference of the rotation speed of the motor 2 can be avoided, and the adjustment errors can be effectively reduced through the accurate calculation of the resistance of the rotary potentiometer 7.

The rotary potentiometer 7 is connected to the circuit board 6, and specifically, how the circuit board 6 collects the resistance of the rotary potentiometer 7 to further know the rotating angle of the positioning shaft 5 is well known in the art, and details are not described herein for saving space.

As shown in fig. 1 to fig. 3, the transmission assembly 4 includes a first transmission member 41 and a second transmission member 42, wherein the first transmission member 41 includes a first gear 411, the second transmission member 42 includes a second gear 421, the first gear 411 and the second gear 421 are engaged and connected in a transmission manner, the first gear 411 is coaxially connected in a transmission manner with the output shaft 3, and the second gear 421 is coaxially connected in a transmission manner with the positioning shaft 5, that is, the transmission assembly 4 realizes transmission via gears, or the transmission assembly 4 may be configured to realize transmission via a sprocket wheel, etc., and when the transmission is realized via gears, the transmission stability can be ensured, the spatial arrangement is facilitated, the adjustment of the valve 200 can be accurately calculated, and the adjustment accuracy is improved.

Further, as shown in fig. 8, the transmission assembly 4 further includes a third gear 43, the third gear 43 is simultaneously engaged with the first gear 411 and the second gear 421 to realize transmission between the first gear 411 and the second gear 42, the number of the third gears 43 may also be two or more, and each third gear 43 is in turn in transmission connection between the first gear 41 and the second gear 42. Specifically, the size, number, etc. of the third gears 43 may be set according to the requirement of the transmission ratio, the spatial arrangement, etc.

The motor 2 can drive the output shaft 3 to do rotary motion within the range of 0-90 degrees, and the output shaft 3 can drive the positioning shaft 5 to rotate within a preset range when rotating within the range of 0-90 degrees, and the preset range is not limited in the embodiment, for example, the preset range is set to be 0-300 degrees or other ranges, and the preset range does not exceed the range of the rotary potentiometer 7.

The first gear 411 is coaxially driven with the output shaft 3, and therefore, the rotation range of the first gear 411 is also 0 ° to 90 °, and therefore, as shown in fig. 2 and 6, the first gear 411 is a sector gear, and the angle of the sector gear is not less than 90 °. Of course, the first gear 411 may be provided with a complete-circle tooth structure arranged along the circumferential direction, and when the first gear 411 is provided with a sector gear, the structure of the first gear 411 can be simplified and the spatial arrangement of the first gear 411 can be facilitated.

In this embodiment, the transmission assembly 4 is further provided with a trigger 44, and the circuit board 6 is provided with two micro switches, which are respectively connected with the circuit board 6, so that it can be understood that when the micro switches are triggered, the circuit board 6 can send corresponding trigger signals. Specifically, when the motor 2 drives the output shaft 3 to rotate to 0 °, the trigger 44 can trigger one micro switch, and when the motor 2 drives the output shaft 3 to rotate to 90 °, the trigger 44 can trigger another micro switch.

Specifically, the triggering members 44 may be disposed on the first transmission member 41 or the second transmission member 42, and the specific structure of the triggering members 44 is not limited, as shown in the embodiment shown in fig. 2 and 4, the number of the triggering members 44 is two, and the two triggering members are disposed on the first transmission member 41 respectively, the first transmission member 41 rotates with the output shaft 3 within a range of 0 ° to 90 °, when the first transmission member 41 rotates to 0 °, one triggering member 44 can be driven to trigger one micro switch, and when the first transmission member 41 rotates to 90 °, the other triggering member 44 can be driven to trigger the other micro switch. That is, by two triggers 44 acting with two microswitches, respectively. Of course, as shown in fig. 6, only one triggering member 44 may be provided, and different micro switches may be triggered by one triggering member 44 at different rotation angles, and the provision of two triggering members 44 can reduce the overall volume of the triggering member 44, thereby simplifying the overall structure.

Through the effect of trigger 44 and micro-gap switch, conveniently carry out feedback with the extreme angle of valve 200 to the user, when valve device and external electrical component are connected, still can be used for the control logic of external electrical component according to the feedback of extreme position.

Coaxial transmission can be realized between the output shaft 3 and the first gear 411, the rotation conditions of the output shaft 3 and the first gear are the same, and particularly, the connection relationship between the output shaft 3 and the first transmission piece 41 is not limited. As shown in fig. 1, the output shaft 3 and the first transmission member 41 may be connected by a fastener 8. Alternatively, the first transmission member 41 may be provided with a plug-in structure, as shown in fig. 5 and 6, the plug-in structure is a plug-in hole 45 coaxial with the first gear 411, the output shaft 3 can be plugged into the plug-in hole 45, and the outer wall of the output shaft 3 and the inner wall of the plug-in hole 45 are further provided with mutually adapted limiting planes 10 along the circumferential direction, respectively, or the plug-in structure may also be a plug-in shaft coaxial with the first gear 41, the output shaft 3 is provided with a plug-in hole, the plug-in shaft is inserted into the plug-in hole, and the mutually adapted limiting planes 10 are provided between the plug-in shaft and the plug-in hole along the circumferential direction. The relative rotation between the first transmission member 41 and the output shaft 3 is limited by the limiting plane 10, so as to ensure the coaxial transmission connection between the first gear 411 and the output shaft 3. Of course, in this embodiment, the first transmission member 41 and the output shaft 3 may be directly integrated, and coaxial transmission may be achieved between the two members.

Similarly, reference may be made to the connection between the second transmission member 42 and the positioning shaft 5, including but not limited to connection via the fastening member 8, insertion connection and engagement via mutually adapted limiting planes, or direct connection to the first transmission member 41 as shown in fig. 3.

And to the connection between location axle 5 and the rotatory potentiometre 7, rotatory potentiometre 7 is equipped with the jack, and location axle 5 can peg graft to in the jack to the outer wall of this location axle 5 and the inner wall of jack correspond respectively and are equipped with the spacing plane of mutual adaptation, and it is spacing through the spacing plane of mutual adaptation after pegging graft, in order to realize coaxial transmission between the two and connect. As shown in fig. 3, the cross section of the positioning shaft 5 is a D-shaped structure, correspondingly, the cross section of the insertion hole of the rotary potentiometer 7 is also a D-shaped structure, and the outer wall of the positioning shaft 5 and the inner wall of the insertion hole are respectively provided with a limiting plane, or two or more limiting planes can be used for limiting.

In this embodiment, the rotary potentiometer 7 is fixed to the circuit board 6 by welding, so as to ensure structural stability between the rotary potentiometer and the circuit board.

The actuator 100 further includes a battery disposed in the housing 1, the battery is connected to the circuit board 6 through a connection line and can supply power to the circuit board 6, and specifically, the battery may be a disposable battery or a rechargeable battery, which is not limited herein. Through setting up the battery for circuit board 6 power supply, for supplying power for circuit board 6 through external cable, overall structure can be simplified, the quantity of reduction connecting wire, reduce cost.

Be equipped with first baffle 11 in the shell 1, this first baffle 11 can be separated the inner chamber of shell 1 and form first cavity 13 and second cavity 14, and wherein, first cavity 13 is used for installing the battery, and second cavity 14 is used for installing parts such as motor 2, output shaft 3, transmission assembly 4, location axle 5, circuit board 6 and rotary potentiometer 7. The arrangement of the first partition plate 11 can ensure that all parts are arranged more regularly in the shell 1, and is convenient for disassembly, assembly and maintenance operation.

Further, still be equipped with second baffle 12 in the shell 1, this second baffle 12 separates second cavity 14 and forms cavity and lower cavity, above-mentioned location axle 5, circuit board 6 and rotatory potentiometre 7 all are located the cavity, drive assembly 4 can locate the cavity and also can locate lower cavity on the cavity, motor 2 is located the cavity and is fixed with second baffle 12, output shaft 3 part passes second baffle 12, this output shaft 3 part is located the cavity down, part is located the cavity, and as shown in fig. 4, 7 and 8, still be equipped with gear drive 9 at the cavity down, the part that output shaft 3 is located the cavity down has set firmly fourth gear 31, motor 2 is connected with fourth gear 31 through gear drive 9 transmission, in order to realize that motor 2 drives output shaft 3 and rotates. The second partition plate 12 is arranged to facilitate installation of the output shaft 3, the motor 2 and other components, and to enable arrangement of the components in the housing 1 to be more regular, thereby facilitating installation and operation.

In the scheme shown in fig. 4, the transmission assembly 4 is located in the upper cavity, and the gear transmission part 9 is located in the lower cavity, in the scheme shown in fig. 7 and 8, the transmission assembly 4 and the gear transmission part 9 are both located in the lower cavity, so that the space of the upper cavity can be reduced, and at this time, the first gear 411, the fourth gear 31 and the output shaft 3 can be arranged into an integrated structure, so as to simplify the molding process.

The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims (10)

1. An actuator of a valve device, the valve device comprises a valve (200) and an actuator, and is characterized in that the actuator comprises a shell (1), and a motor (2), an output shaft (3), a transmission assembly (4) and a positioning shaft (5) which are arranged in the shell (1) and are sequentially connected in a transmission manner, wherein the output shaft (3) and a valve rod of the valve (200) are coaxially driven;

the actuator further comprises a circuit board (6) and a rotary potentiometer (7) which are arranged in the shell (1), the rotary potentiometer (7) is in transmission connection with the positioning shaft (5), the circuit board (6) is connected with the rotary potentiometer (7), and the resistance of the rotary potentiometer (7) can be acquired.

2. Actuator of a valve device according to claim 1, wherein the transmission assembly (4) comprises a first transmission member (41) and a second transmission member (42), the first transmission member (41) comprises a first gear (411), the second transmission member (42) comprises a second gear (421), the first gear (411) and the second gear (421) are in meshed transmission connection, the first gear (411) is in coaxial transmission connection with the output shaft (3), and the second gear (421) is in coaxial transmission connection with the positioning shaft (5).

3. Actuator of a valve device according to claim 2, wherein the transmission assembly (4) further comprises at least one third gear (43) in meshing connection between the first (411) and second (421) gears.

4. Actuator of a valve device according to claim 2, characterized in that the connection between the first transmission member (41) and the output shaft (3) is by means of a fastening member (8);

or the first transmission piece (41) further comprises an insertion structure coaxial with the first gear (411), the insertion structure and the output shaft (3) are matched in an insertion manner, and the first gear and the output shaft (3) are circumferentially provided with mutually-matched limiting planes;

or, the first transmission piece (41) and the output shaft (3) are of an integrated structure.

5. Actuator of a valve device according to claim 2, wherein the rotary potentiometer (7) is provided with a plug hole, the positioning shaft (5) can be inserted into the plug hole, and the outer wall of the positioning shaft (5) and the inner wall of the plug hole are respectively and correspondingly provided with mutually adaptive limiting planes.

6. Actuator of a valve device according to any of claims 2-5, wherein the transmission assembly (4) is further provided with a triggering member (44), the circuit board (6) is further provided with two micro switches, the triggering member (44) is capable of triggering one of the micro switches when the motor (2) drives the output shaft (3) to rotate to 0 °, and the triggering member (44) is capable of triggering the other micro switch when the motor (2) drives the output shaft (3) to rotate to 90 °.

7. Actuator of a valve device according to any of claims 1-5, wherein the rotary potentiometer (7) is welded to the circuit board (6).

8. The actuator of a valve device according to any one of claims 1 to 5, further comprising a battery disposed in the housing (1), wherein the battery is used for supplying power to the circuit board (6), a first partition plate (11) is disposed in the housing (1), the first partition plate (11) partitions an inner cavity of the housing (1) into a first cavity (13) and a second cavity (14), the first cavity (13) is used for installing the battery, and the second cavity (14) is used for installing the motor (2), the output shaft (3), the transmission assembly (4), the positioning shaft (5), the circuit board (6) and the rotary potentiometer (7).

9. The actuator of the valve device according to claim 8, further comprising a second partition plate (12) disposed in the housing, wherein the second partition plate (12) partitions the second cavity (14) into an upper cavity and a lower cavity, and the motor (2) is fixed to the second partition plate (12) and is in transmission connection with a fourth gear (31) fixed to the output shaft (3) through a gear transmission part (9) disposed in the lower cavity.

10. A valve arrangement comprising a valve (200) and an actuator according to any of claims 1-9.

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