Electric actuator capable of detecting valve separation

Abstract

The utility model relates to the technical field of valve control, in particular to an electric actuator capable of detecting valve separation, which comprises an actuator shell, a rotating shaft sleeve is communicated with the center of the side wall of the actuator shell, a limiting ring is fixedly connected with the inner wall of the rotating shaft sleeve, and an annular inner gear ring is slidably mounted between the annular inner walls of the actuator shell; when the device is powered off, the external handle is inserted into one end of the output rotating shaft in a penetrating mode, extrusion force is input, then the clamping sleeve is clamped with the clamping jaw at the valve rod end of the valve, at the moment, the valve rod of the valve can be controlled to rotate by rotating the handle, the clamping sleeve is installed on one side of the sun gear, and the sun gear is meshed with the planetary gear. And a planetary gear structure is formed, so that the sun gear and the clamping sleeve can be driven to synchronously and rapidly rotate in the rotating process of the output rotating shaft, the opening and closing efficiency of the device to the valve can be improved while the rotating efficiency of the handle is not changed, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve control technical field, specifically is a kind of electric actuator that can detect valve separation. BACKGROUND

[0002] Valve electric actuator is with electric energy as main energy source, to drive the machinery of valve. It is divided into multiple rotation, partial rotation, straight-through type, angle pass type and multiple types, it is suitable for gate valve, stop valve and other need multiple rotation handle to open, close operation's valve, or through worm drive device drive butterfly valve, ball valve, plug valve and other partial rotation valve.

[0003] Such as existing patent publication number CN208734979U provides a kind of electric actuator that can detect valve separation, including shell, motor, single-chip microcontroller and remote module, the motor and single-chip microcontroller are connected, the single-chip microcontroller is connected with remote module, it is characterized by, still include valve separation detection device, the valve separation detection device is installed in shell and is connected with single-chip microcontroller. With the rotating rod of existing valve as magnetic core, utilize simple RLC resonant circuit and signal processing circuit to detect, when electric actuator and valve are separated, circuit voltage change makes single-chip microcontroller send alarm signal to host computer and prompt anomaly.

[0004] In the above-mentioned technology, when the actuator is powered off, the valve rotating rod needs to be rotated by manual rotation, wherein the number of turns of the screw of the valve is usually high, and the valve rotating rod is directly connected with the valve stem, so that the manual rotation of the valve rotating rod needs a long time, thus resulting in low efficiency of manual opening and closing.

[0005] Therefore, an electric actuator that can detect valve separation is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0006] In order to make up for the deficiencies of the prior art, solve the problem that the number of turns of the screw of the valve is usually high, and the valve rotating rod is directly connected with the valve stem, so that the manual rotation of the valve rotating rod needs a long time, thus resulting in low efficiency of manual opening and closing, an electric actuator that can detect valve separation is proposed.

[0007] The utility model solves the technical scheme that it adopts: a kind of electric actuator that can detect valve separation according to the utility model, including actuator shell, the side wall center of the actuator shell is connected with the sleeve of rotating shaft, the inner wall of the sleeve of rotating shaft is fixedly connected with the limit ring, the annular inner wall between the actuator shell is slidably installed with annular inner gear, the inside of the annular inner gear is provided with rotating shaft assembly, the rotating shaft assembly includes output rotating shaft, the outer wall of the output rotating shaft is provided with annular groove, the inner wall of the annular groove and the inner wall of the limit ring are mutually slid.

[0008] Preferably, one end of the output rotating shaft is fixedly connected with a circular plate support, a circular clamping groove is formed in the center of the side wall of the circular plate support, the circular plate support is slidingly installed in the inside of the annular inner gear ring, and a plurality of planetary gears are installed on the circular plate support through a shaft rod away from the side wall where the annular groove is located.

[0009] Preferably, the plurality of planetary gears are installed at equal angles along the circumferential direction of the circular support, and the plurality of planetary gears are all in meshing engagement with the inner teeth of the annular inner gear ring.

[0010] Preferably, a sun gear is installed in meshing engagement between the plurality of planetary gears, and a clamping sleeve is fixedly connected to the sun gear away from the side wall where the annular groove is located.

[0011] Preferably, a limiting rotating shaft is slidingly installed in the through holes of the clamping sleeve and the sun gear, and a circular plate at one end of the limiting rotating shaft is in clamping engagement with the circular clamping groove.

[0012] Preferably, a circular ring top plate is slidingly installed between the circular inner walls of the actuator shell, and a limiting guide rod is slidingly penetrated through the through holes in the side walls of the circular ring top plate.

[0013] Preferably, the limiting guide rod is penetrated through the through holes in the side walls of the annular inner gear ring and is in clamping engagement with the circular grooves in the inner walls of the actuator shell.

[0014] Preferably, an extrusion spring is installed at the center of the side wall of the circular ring top plate.

[0015] The utility model discloses a beneficial effect:

[0016] In the utility model, through the mutual cooperation linkage between the annular inner gear ring in the actuator shell and the components of the rotating shaft assembly, when the device is powered off, the external handle is inserted into one end of the output rotating shaft and input extrusion force to make the clamping sleeve and the clamping claw of the valve stem end clamping engagement, at this moment, the handle can be rotated to control the rotation of the valve stem, wherein the clamping sleeve is installed on one side of the sun gear, and the sun gear and the planetary gear are in meshing engagement, forming a planetary gear structure, which makes the output rotating shaft rotate to drive the sun gear and the clamping sleeve to rotate synchronously, thereby increasing the opening and closing efficiency of the device on the valve while the rotation efficiency of the handle is unchanged, and increasing the practicability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The schematic embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0018] Figure 1 It is the perspective view of the utility model;

[0019] Figure 2 is a partial sectional view of the actuator shell in the utility model;

[0020] Figure 3 is a perspective view of the rotating shaft assembly in the utility model;

[0021] Figure 4 is a perspective view of the circular top plate, the limiting guide rod and the extrusion spring in the utility model;

[0022] Legend:

[0023] 1, actuator shell; 11, rotating shaft sleeve; 12, limiting ring; 2, annular inner gear ring; 3, rotating shaft assembly; 31, output rotating shaft; 32, annular groove; 33, circular plate support; 34, circular clamping groove; 35, planetary gear; 36, sun gear; 37, clamping sleeve; 38, limiting rotating shaft; 4, circular top plate; 5, limiting guide rod; 6, extrusion spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Specific embodiments are given below.

[0026] Please refer to Figure 1 - Figure 4 The utility model provides a kind of electric actuator of valve separation detection, including actuator shell 1, rotating shaft sleeve 11 is connected in the center of the sidewall of actuator shell 1, the inner wall of rotating shaft sleeve 11 is fixedly connected with limiting ring 12, annular inner gear ring 2 is slidably installed between the annular inner wall of actuator shell 1, rotating shaft assembly 3 is arranged inside annular inner gear ring 2, rotating shaft assembly 3 includes output rotating shaft 31, annular groove 32 is formed in the outer wall of output rotating shaft 31, the inner wall of annular groove 32 and the inner wall of limiting ring 12 are mutually slid, actuator shell 1 is fixedly connected outside valve stem socket under the cooperation of bolt, annular inner gear ring 2 is installed in actuator shell 1, it is linked with rotating shaft assembly 3 by the cooperation between the parts of inner ring gear and rotating shaft assembly 3, output rotating shaft 31 is linked with actuator shell 1 by the mutual engagement between annular groove 32 formed in the sidewall thereof and limiting ring 12 in rotating shaft sleeve 11, so that one end can rotate with the rotation of handle while being mutually clamped with handle output shaft, and the relative position of one end in actuator shell 1 can be controlled by applying pressure to handle and annular inner gear ring 2 to realize the clamping control between rotating shaft assembly 3 and valve stem.

[0027] As Figure 2 and Figure 3 shown, the output shaft 31 one end of the fixed connection has a circular plate bracket 33, the circular plate bracket 33 side wall center is provided with a circular clamping groove 34, the circular plate bracket 33 is slidably installed in the inside of the annular inner gear ring 2, the circular plate bracket 33 away from the side wall of the annular groove 32 through the shaft rod is installed with a plurality of planetary gears 35, a plurality of planetary gears 35 along the outer circumferential direction of the circular support is installed at equal angle, a plurality of planetary gears 35 all with the inner tooth of annular inner gear ring 2 is engaged with each other, a plurality of planetary gears 35 between the engagement installation has a sun gear 36, the sun gear 36 away from the side of the annular groove 32 is fixedly connected with the clamping sleeve 37, the clamping sleeve 37 and the through hole of the sun gear 36 is slidably installed with a limit shaft 38, the limit shaft 38 one end of the circular plate and the circular clamping groove 34 is mutually clamped, the circular plate bracket 33 fixed at one end of the output shaft 31 through the shaft to install planetary gear 35, at the same time, the planetary gear 35 is engaged with the annular inner gear ring 2 through the tooth, and the sun gear 36 is engaged between a plurality of planetary gears 35, and the sun gear 36 is engaged between the limit shaft 38 and the circular clamping groove 34 and the circular plate bracket 33 linkage, which makes the annular inner gear ring 2, the circular plate bracket 33 and the sun gear 36 constitute planetary gear structure, when the annular inner gear ring 2 is rotated fixed, the rotation of the circular plate bracket 33 can drive the sun gear 36 to rotate synchronously, thereby in the device power off, while the handle rotation efficiency does not change, can speed up the device to open and close the valve efficiency, realize the device to the valve plate valve rod efficiency rotation control.

[0028] As Figure 2 and Figure 4 shown, the circular inner wall of the actuator shell 1 is slidably installed with a circular top plate 4, the circular top plate 4 is slidably penetrated with a limiting guide rod 5 between the side wall through hole, the limiting guide rod 5 penetrates the side wall through hole of the annular inner gear ring 2 at the same time and is clamped with the inner wall circular groove of the actuator shell 1, the circular top plate 4 is installed with an extrusion spring 6 at the center of the side wall, when the limiting guide rod 5 penetrates the side wall through hole of the circular top plate 4 and the annular inner gear ring 2 and is clamped with the inner circular groove of the annular inner gear ring 2, the one end of the limiting guide rod 5 is clamped with the mounting seat side hole of the actuator shell 1 after the limiting guide rod 5 is clamped with the inner circular groove of the annular inner gear ring 2, the annular inner gear ring 2 is installed at this time, the relative position of the annular inner gear ring 2 in the longitudinal direction is fixed, and it cannot rotate relatively with the inner wall of the annular inner gear ring 2, realizing the speed limiting condition of the planetary gear, and the circular top plate 4 can limit the position of the circular top plate 4 in the transverse direction under the elastic extrusion force of the extrusion spring 6, and increase the rationality of the device structure, and the process of clamping the handle control clamping sleeve 37 and the one end of the valve plate valve rod through the pressing and the one end of the shaft assembly 3 will not affect the circular top plate 4 and the extrusion spring 6, and the limiting guide rod 5 and the annular inner gear ring 2 are equipped with springs at the end, which can make the planetary gear 35 slidably in the annular inner gear ring 2 have elastic force away from the valve stem.

[0029] Working principle: the actuator shell 1 is fixed on the valve stem socket outside the bolt, the annular inner ring gear 2 is installed in the actuator shell 1, which is linked with the rotating shaft assembly 3 through the mutual cooperation between the inner ring gear and the parts of the rotating shaft assembly 3, the output rotating shaft 31 is linked with the actuator shell 1 through the mutual cooperation between the annular groove 32 on the side wall of the output rotating shaft 31 and the limiting ring 12 in the rotating shaft sleeve 11, so that one end of the output rotating shaft 31 can rotate with the handle after being clamped with the handle output shaft, and the relative position of one end of the handle and the annular inner ring gear 2 in the actuator shell 1 can be controlled by applying pressure to the handle and the annular inner ring gear 2, so as to realize the clamping control between the rotating shaft assembly 3 and the valve stem, the circular plate support 33 fixed on one end of the output rotating shaft 31 is installed through the rotating shaft planetary gear 35, the planetary gear 35 is meshed with the annular inner ring gear 2 through the teeth, the sun gear 36 is meshed and installed between the planetary gears 35, and the sun gear 36 is linked with the circular plate support 33 through the mutual clamping between the limiting rotating shaft 38 and the circular clamping groove 34, which makes the annular inner ring gear 2, the circular plate support 33 and the sun gear 36 form a planetary gear structure, when the annular inner ring gear 2 is rotated and fixed, the rotation of the circular plate support 33 can drive the sun gear 36 to rotate synchronously and quickly, thereby the opening and closing efficiency of the device to the valve can be increased while the rotation efficiency of the handle remains unchanged after the device is powered off, and the efficiency rotation control of the device to the valve plate stem is realized, when the limiting guide rod 5 penetrates the through hole of the annular top plate 4 and the annular inner ring gear 2 and is clamped with the inner circular groove of the annular inner ring gear 2, the limiting guide rod 5 is clamped with the side opening of the mounting seat of the actuator shell 1, and the annular inner ring gear 2 is installed, at this time, the relative position of the annular inner ring gear 2 in the longitudinal direction is fixed, and the annular inner ring gear 2 cannot rotate relative to the inner wall of the annular inner ring gear 2, the speed limiting condition of the planetary gear is realized, the annular top plate 4 can limit the position of the annular top plate 4 in the transverse direction under the elastic extrusion force of the extrusion spring 6, and the structural rationality of the device is increased, and the process of clamping the handle control clamping sleeve 37 with one end of the rotating shaft assembly 3 and the other end of the valve plate stem will not affect the annular top plate 4 and the extrusion spring 6.

[0030] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An electric actuator with detectable valve disconnection comprising an actuator housing (1), characterized in that: The side wall center of the executor shell (1) is connected with a rotating shaft sleeve (11), the inner wall of the rotating shaft sleeve (11) is fixedly connected with a limiting ring (12), the annular inner wall of the executor shell (1) is slidingly installed with an annular inner gear ring (2), the inside of the annular inner gear ring (2) is provided with a rotating shaft assembly (3), the rotating shaft assembly (3) comprises an output rotating shaft (31), the outer wall of the output rotating shaft (31) is provided with an annular groove (32), and the inner wall of the annular groove (32) and the inner wall of the limiting ring (12) are slidingly connected with each other.

2. An electric actuator with detectable valve separation according to claim 1, characterized in that: One end of the output rotating shaft (31) is fixedly connected with a circular plate support (33), the side wall center of the circular plate support (33) is provided with a circular clamping groove (34), the circular plate support (33) is slidingly installed in the inside of the annular inner gear ring (2), and a plurality of planetary gears (35) are installed on the circular plate support (33) through shaft rods away from the side wall where the annular groove (32) is located.

3. An electric actuator with detectable valve separation according to claim 2, characterized in that: A plurality of the planetary gears (35) are installed along the equidistant angle of the outer circumferential direction of the circular support, and a plurality of the planetary gears (35) are in meshing engagement with the inner teeth of the annular inner gear ring (2).

4. An electric actuator with detectable valve separation according to claim 3, characterized in that: A sun gear (36) is in meshing engagement between a plurality of the planetary gears (35), the sun gear (36) is fixedly connected with a clamping sleeve (37) away from the side wall where the annular groove (32) is located.

5. An electric actuator with detectable valve separation according to claim 4, characterized in that: The limiting rotating shaft (38) is slidingly installed in the through hole of the clamping sleeve (37) and the sun gear (36), and the one end circular plate of the limiting rotating shaft (38) is clamped with the circular clamping groove (34).

6. The electric actuator with detectable valve separation of claim 1, wherein: The circular ring top plate (4) is slidingly installed between the circular inner wall of the executor shell (1), and the limiting guide rod (5) is slidingly penetrated between the side wall through holes of the circular ring top plate (4).

7. An electric actuator with detectable valve separation according to claim 6, characterized in that: The limiting guide rod (5) penetrates through the side wall through holes of the annular inner gear ring (2) and is clamped with the inner wall circular groove of the executor shell (1).

8. An electric actuator with detectable valve separation according to claim 7, characterized in that: The side wall center of the circular ring top plate (4) is installed with an extrusion spring (6).

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