CN219045592U

CN219045592U - Ball valve actuator

Info

Publication number: CN219045592U
Application number: CN202223528043.6U
Authority: CN
Inventors: 朱翼虎
Original assignee: Tiger Controls Equipment Co ltd
Current assignee: Tiger Controls Equipment Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-19
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a ball valve actuator, comprising: an actuator housing; the actuator output shaft is arranged in the actuator shell, and one end of the actuator output shaft extends out of the actuator shell and is used for connecting a manual mechanism; the driving motor is arranged in the actuator shell and is in transmission connection with the output shaft of the actuator through a gear transmission chain, at least one gear in the gear transmission chain is a sliding gear, and the sliding gear is sleeved on the gear shaft in a sliding manner; the first reset elastic piece is used for driving the sliding gear to be in a meshed state in the gear transmission chain; the manual switching rod is slidably arranged in the actuator shell and used for driving the sliding gear to be separated from the meshing state in the gear transmission chain, and one end of the manual switching rod is exposed out of the actuator shell. The utility model can lead the manual mechanism to be separated from the connection of the driving motor when in use, so as to reduce the rotation resistance and the rotation inertia and avoid the impact on the gear caused by improper operation.

Description

Ball valve actuator

Technical Field

The utility model relates to the technical field of ball valves, in particular to a ball valve actuator.

Background

Actuators are an essential component of an automatic control system. The function of the device is to receive the control signal from the controller and change the size of the controlled medium, so as to maintain the controlled variable at the required value or within a certain range. The actuator can be divided into three categories of pneumatic, hydraulic and electric according to the energy form. The electric actuator for the valve refers to a machine which uses electric energy as a main energy source and is used for driving the valve.

In the ball valve actuator in the prior art, power is output through a driving motor, a gear transmission chain is driven to transmit power to an output shaft, and a valve core of a ball valve is driven to act through the output shaft, so that the switching of the switching action of the ball valve is realized. A gear of a general output shaft is provided with a limiting part to limit the rotation range of the output shaft, so that the ball valve acts between the switches. The existing ball valve actuator is provided with a manual mechanism besides an electric control mechanism, so that the ball valve can be controlled through the manual mechanism after power failure.

The manual handle of the manual mechanism is connected with one gear of the gear transmission chain, and when the manual handle is rotated, the motor needs to synchronously rotate, so that the rotation resistance is larger. And because the whole gear transmission chain and the driving motor need to be driven to rotate, the rotation inertia is large, under the condition of improper operation, the limiting part on the output shaft gear is large in force of impacting mechanical limitation, the impact on the gear is easy to cause, and the gear is damaged to a certain extent.

Therefore, how to make the manual mechanism break away from the connection of the driving motor when in use, so as to reduce the rotation resistance and the rotation inertia, and avoid the impact on the gear caused by improper operation, which is a technical problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a ball valve actuator, so that a manual mechanism can be disconnected from a driving motor during use, thereby reducing rotational resistance and rotational inertia, and avoiding impact on gears caused by improper operation.

In order to achieve the above object, the present utility model provides the following technical solutions:

a ball valve actuator, comprising:

an actuator housing;

the actuator output shaft is arranged in the actuator shell, and one end of the actuator output shaft extends out of the actuator shell and is used for connecting a manual mechanism;

the driving motor is arranged in the actuator shell and is in transmission connection with the actuator output shaft through a gear transmission chain, at least one gear in the gear transmission chain is a sliding gear, and the sliding gear is sleeved on the gear shaft in a sliding manner;

the first reset elastic piece is used for driving the sliding gear to be in a meshed state in the gear transmission chain;

the manual switching rod is slidably arranged in the actuator shell and used for driving the sliding gear to be separated from the meshing state in the gear transmission chain, and one end of the manual switching rod is exposed out of the actuator shell.

Optionally, in the ball valve actuator, a pressing chute is arranged at the top of the actuator shell;

the manual switching rod is exposed out of one end of the actuator shell and is a pressing part, the pressing part is in sliding fit with the pressing sliding groove, and a sliding hole for the manual switching rod to extend into the actuator shell is formed in the bottom wall of the pressing sliding groove.

Optionally, in the above ball valve actuator, a limiting buckle for being clamped with the sliding hole is disposed at the lower end of the pressing portion, when the sliding gear is in a meshed state in the gear transmission chain, the limiting buckle is clamped with the sliding hole, and the upper surface of the pressing portion is flush with the upper surface of the pressing sliding groove.

Optionally, in the ball valve actuator, the limit buckle is an elastic buckle.

Optionally, in the above ball valve actuator, the pressing portion includes a rod portion and a button portion located at a tip end of the rod portion, an outer diameter of the button portion being larger than an outer diameter of the rod portion;

the second reset elastic piece is sleeved on the rod part, one end of the second reset elastic piece is propped against the button part, and the other end of the second reset elastic piece is propped against the bottom wall of the pressing sliding groove so as to drive the limiting buckle to be clamped with the sliding hole.

Optionally, in the above ball valve actuator, the first return elastic member is a tower-shaped spring, and an end of the tower-shaped spring with a smaller diameter abuts against the sliding gear.

Optionally, in the ball valve actuator, an adjusting hole is formed in the position of the dial switch on the upper housing of the actuator housing, and the adjusting hole is sealed and buckled through a dial cover.

Optionally, in the above ball valve actuator, the dial cover is fastened to the adjusting hole by a dial cover fastener, and the dial cover and the inner wall of the adjusting hole are sealed by a V-shaped sealing ring.

Optionally, in the above ball valve actuator, an indicator light is disposed on a circuit board on which the dial switch is mounted, the dial cover is a transparent dial cover, and a side of the dial cover facing the indicator light is disposed with a light guide column corresponding to the indicator light and pointing to the indicator light.

Optionally, in the above ball valve actuator, the ball valve actuator further includes a detection device for detecting a position of the sector gear on the output shaft of the actuator, and the detection device includes:

the potentiometer is arranged on a circuit board of the ball valve actuator;

and one end of the potentiometer feedback shaft penetrates through the circuit board to be connected with the potentiometer, the other end of the potentiometer feedback shaft is in transmission connection with a gear to be detected in the gear transmission chain, and the potentiometer obtains the position of the sector gear through the transmission ratio of the gear to be detected to the sector gear.

Optionally, in the ball valve actuator, the potentiometer feedback shaft is in spline transmission connection with the gear to be tested; and/or the number of the groups of groups,

the potentiometer feedback shaft is connected with the potentiometer through a D-shaped connecting sleeve.

Optionally, in the above ball valve actuator, the potentiometer feedback shaft has a mating hole, a gear shaft of the gear to be tested stretches into the mating hole, the potentiometer feedback shaft is in running fit with an upper box plate in the actuator housing through a bearing seat, and the potentiometer feedback shaft is made of POM material.

According to the ball valve actuator provided by the utility model, the manual switching rod is additionally arranged, and the manual switching rod is in sliding fit with the actuator shell. At least one gear in the gear transmission chain is designed to be a sliding gear, one end of the manual switching rod is exposed out of the actuator shell, and the exposed end of the manual switching rod can be pressed down to enable the manual switching rod to push the sliding gear to be separated from the meshing state of the transmission chain, so that the transmission chain from the driving motor to the output shaft of the actuator is cut off, and at the moment, the output shaft of the actuator is not rigidly connected with the driving motor. In this case, the manual function of the ball valve actuator is achieved by manually rotating a manual mechanism that is fixed relative to the actuator output shaft. Because the actuator output shaft and the driving motor are disconnected in transmission, the driving motor is not required to be driven to rotate in a following way when the actuator output shaft is rotated, and the rotation resistance is small. And because the whole gear transmission chain and the driving motor do not need to be driven to rotate, the rotation inertia is small, the control is easier, the risk of improper operation is reduced, and the problem that the impact and damage to the gear are caused because the limiting part on the output shaft gear impacts the mechanical limiting force too much is avoided.

After the manual adjustment of the ball valve actuator is completed, the sliding gear is pushed to be in an engaged state in the gear transmission chain by the first reset elastic piece only by loosening the manual switching rod, so that the transmission chain from the driving motor to the output shaft of the actuator is reconnected, and the electric adjustment function is restored.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the internal structure of a ball valve actuator according to an embodiment of the present utility model;

FIG. 2 is a partial cross-sectional view of a manual switch lever of a ball valve actuator provided in an embodiment of the present utility model;

FIG. 3 is a schematic view of the external structure of a ball valve actuator according to an embodiment of the present utility model;

FIG. 4 is a partial cross-sectional view of a dial cap of a ball valve actuator provided in an embodiment of the present utility model;

fig. 5 is a partial cross-sectional view of a potentiometer feedback shaft of a ball valve actuator provided by an embodiment of the present utility model.

The meaning of the individual reference numerals in the figures is as follows:

101 is a manual switching lever, 1011 is a pressing part, 102 is a sliding gear, 103 is a driving motor, 104 is an actuator output shaft, 1041 is a sector gear, 105 is a connecting manual mechanism, 106 is a first reset elastic member, 107 is a second reset elastic member, 108 is a gear shaft, 109 is an actuator housing, 1091 is a pressing chute, 110 is a dial cover, 1101 is a light guide column, 111 is a V-shaped sealing ring, 112 is a circuit board, 1121 is a dial switch, 1122 is an indicator light, 1123 is a potentiometer, 113 is a lower housing, 114 is a self-lubricating bearing, 115 is a gear shaft, 116 is a gear to be tested, 117 is an upper box plate, 118 is a bearing seat, 119 is a potentiometer feedback shaft.

Detailed Description

The utility model aims at providing a ball valve actuator, so that a manual mechanism can be disconnected from a driving motor when in use, thereby reducing rotation resistance and rotation inertia and avoiding impact on gears under the condition of improper operation.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, an embodiment of the present utility model discloses a ball valve actuator including an actuator housing 109, an actuator output shaft 104, a driving motor 103, a first return elastic member 106, and a manual switching lever 101.

The actuator output shaft 104 is disposed in the actuator housing 109, and one end of the actuator output shaft extends out of the actuator housing 109 to be used for connecting with the manual mechanism 105, and the manual mechanism 105 is generally a wrench handle, which may be fixed on the actuator output shaft 104 all the time, or may be mounted on the actuator output shaft 104 during use. The end of the actuator output shaft 104 exposed to the actuator housing 109 has a profile configuration and the trigger handle has a mating profile hole.

The driving motor 103 is disposed in the actuator housing 109 and is in transmission connection with the actuator output shaft 104 through a gear transmission chain, and the specific gear number and transmission ratio in the gear transmission chain can be set according to actual requirements, which is not limited herein. At least one gear in the gear transmission chain is a sliding gear 102, and the sliding gear 102 is slidably sleeved on the gear shaft 108. Specifically, a gear having a proper spatial position should be selected as the sliding gear 102 to facilitate the installation of the manual switching lever 101. In addition to the spatial position, a gear with a smaller meshing force should be selected as the sliding gear 102.

One end of the first return elastic member 106 abuts against the sliding gear 102, and the other end abuts against the inner wall of the actuator housing 109, so as to drive the sliding gear 102 to be in an engaged state in the gear train. The manual switch lever 101 is slidably disposed in the actuator housing 109, and is used for driving the sliding gear 102 to be out of engagement in the gear train, and one end of the manual switch lever 101 is exposed to the actuator housing 109. The operator can disengage the gear train by pressing one end of the manual switch lever 101 exposed to the actuator housing 109, such that the manual switch lever 101 pushes the sliding gear 102 to compress the first return elastic member 106.

The ball valve actuator provided by the utility model is added with the manual switching rod 101, and the manual switching rod 101 is in sliding fit with the actuator housing 109. And at least one gear in the gear transmission chain is designed as a sliding gear 102, one end of the manual switching rod 101 is exposed out of the actuator housing 109, and the exposed end of the manual switching rod 101 can be pressed down, so that the manual switching rod 101 pushes the sliding gear 102 to be separated from the engagement state with the transmission chain, the transmission chain from the driving motor 103 to the actuator output shaft 104 is cut off, and at the moment, the actuator output shaft 104 and the driving motor 103 are not rigidly connected. The manual function of the ball valve actuator is in this case achieved by manual rotation of a manual mechanism 105 which is fixed relative to the actuator output shaft 104. Since the actuator output shaft 104 is disconnected from the driving motor 103, the driving motor 103 is not required to be driven to rotate when the actuator output shaft 104 is rotated, and the rotation resistance is small. And because the whole gear transmission chain and the driving motor 103 do not need to be driven to rotate, the rotation inertia is smaller, the control is easier, the risk of improper operation is reduced, and the impact and damage to the gear caused by overlarge force of the impact of the limiting part on the output shaft gear (namely the sector gear 1041) to the mechanical limit are avoided.

After the manual adjustment of the ball valve actuator is completed, only the manual switching lever 101 is required to be released, the sliding gear 102 is pushed to be reset to be in an engaged state in the gear transmission chain by the first reset elastic member, so that the transmission chain from the driving motor 103 to the actuator output shaft 104 is reconnected, and the electric adjustment function is restored.

In an embodiment of the present utility model, a pressing chute 1091 is disposed at the top of the actuator housing 109, and a pressing portion 1011 is disposed at an end of the manual switch lever 101 exposed to the actuator housing 109, the pressing portion 1011 is slidably engaged in the pressing chute 1091, and a sliding hole for the manual switch lever 101 to extend into the actuator housing 109 is formed in the bottom wall of the pressing chute 1091.

One end of the manual switch lever 101 extending into the actuator housing 109 passes through a sliding hole in the bottom wall of the pressing chute 1091 and abuts against the sliding gear 102, and the pressing portion 1011 is located in the pressing chute 1091. The pressing sliding groove 1091 is provided at the top of the actuator housing 109, so that the pressing portion 1011 at the end of the manual switch lever 101 is immersed into the pressing sliding groove 1091, so as to avoid the manual switch lever 101 protruding from the actuator housing 109 and causing erroneous touch.

Further, a limiting buckle for being clamped with the sliding hole is arranged at the lower end of the pressing portion 1011, and when the sliding gear 102 is in a meshed state in the gear transmission chain, the limiting buckle is clamped with the sliding hole, and the upper surface of the pressing portion 1011 is flush with the upper surface of the pressing sliding groove 1091. In this embodiment, the pressing portion 1011 and the entire manual switch lever 101 can be prevented from being separated from the actuator housing 109 by the engagement of the limit buckle and the slide hole.

The limiting buckle is an elastic buckle, a compression gap is formed between the elastic wall of the elastic buckle and the main body of the manual switching rod 101, the manual switching rod 101 extends into one end of the inside of the actuator shell 109, penetrates through a sliding hole in the bottom wall of the pressing sliding groove 1091 and is abutted to the sliding gear 102, the elastic buckle on the pressing part 1011 is compressed to be tightly attached to the main body of the manual switching rod 101, so that the elastic buckle can penetrate through the sliding hole, and then the elastic wall of the elastic buckle is reset, so that the elastic buckle is clamped on the end face below the sliding hole.

In one embodiment of the present utility model, the pressing portion 1011 includes a lever portion and a button portion located at a top end of the lever portion, and an outer diameter of the button portion is larger than an outer diameter of the lever portion, so that an operator can press the button portion conveniently, and a pressing area is increased.

The rod part is sleeved with a second reset elastic piece 107, one end of the second reset elastic piece 107 abuts against the button part, and the other end abuts against the bottom wall of the pressing sliding groove 1091 so as to drive the limiting buckle to be clamped with the sliding hole. The reset action of the manual switch lever 101, through the combined action of the first reset elastic piece 106 and the second reset elastic piece 107, can ensure that the sliding gear 102 is in a meshed state in the gear transmission chain rapidly when the manual switch lever 101 is released, and the actuator output shaft 104 and the driving motor 103 are restored to be transmitted.

Specifically, the first restoring elastic member 106 is a tower-shaped spring, where one end of the tower-shaped spring with a smaller diameter is abutted against the sliding gear 102, and one end of the tower-shaped spring with a larger diameter is abutted against the inner wall of the actuator housing 109, so that one end abutted against the actuator housing 109 has a larger size, stability of the first restoring elastic member 106 is improved, and smooth restoration of the sliding gear 102 is ensured.

The ball valve actuator with the external cable is generally provided, the upper housing of the actuator housing 109 is generally of an integrated design, after the ball valve actuator leaves the factory, a user is not allowed to perform an operation on internal control, and when the ball valve actuator encounters an update program, the integral upper housing needs to be opened, but the connection of the upper housing is relatively firm due to protection, and the operation is difficult in practical use.

Based on this, as shown in fig. 3 and 4, in the present embodiment, an adjustment hole is provided in the upper case of the actuator housing 109 at the position of the dial switch 1121, and the adjustment hole is sealed and engaged by the dial cover 110. When the user needs to adjust the dial switch 1121 inside, the user only needs to open the dial cover 110, and the upper cover shell does not need to be completely removed.

Further, in order to ensure the tightness of the dial cover 110, the dial cover 110 is clamped on the adjusting hole through the dial cover buckle, and the dial cover 110 and the inner wall of the adjusting hole are sealed through the V-shaped sealing ring 111, so as to prevent dust from entering the cavity of the actuator housing 109 through the adjusting hole. The dial cover 110 is elastically clamped at the adjusting hole by the dial cover buckle, and a corresponding clamping part can be arranged in the adjusting hole so as to clamp the dial cover buckle at the clamping part.

Because the dial cover 110 is clamped on the adjusting hole through the dial cover buckle, the disassembly is difficult, so that the condition that the inside of the dial cover 110 can be observed due to the disassembly is avoided. In this embodiment, an indicator lamp 1122 is disposed on the circuit board 112 with the dial switch 1121, the dial cover 110 is a transparent dial cover, and a light guide column 1101 corresponding to the indicator lamp 1122 and pointing to the indicator lamp 1122 is disposed on a side of the dial cover 110 facing the indicator lamp 1122. Because the dial cover 110 is made of transparent material, the inside of the dial cover 110 can be clearly seen under the light guiding effect of the light guiding column 1101. The change of the indicator lamp 1122 can be observed on the outside without opening the dial cover 110.

In an embodiment of the present utility model, as shown in fig. 5, the present utility model may further include a detecting device for detecting the position of the sector gear 1041 on the output shaft 104 of the actuator, where the detecting device includes a potentiometer 1123 and a potentiometer feedback shaft 119.

The potentiometer 1123 is disposed on the circuit board 112 of the ball valve actuator, so that the current position of the gear 116 to be measured can be determined by reading the resistance value of the potentiometer 1123, and the position of the sector gear 1041 can be obtained by the potentiometer 1123 through the transmission ratio of the gear 116 to be measured and the sector gear 1041 because the transmission ratio of the gear 116 to be measured and the sector gear 1041 in the gear transmission chain is known.

One end of a potentiometer feedback shaft 119 penetrates through the circuit board 112 to be connected with the potentiometer 1123, and the other end of the potentiometer feedback shaft is in transmission connection with a gear 116 to be measured in a gear transmission chain so as to transmit the rotation angle of the gear 116 to be measured to the potentiometer 1123. It should be noted that, detecting the rotation angle through the potentiometer 1123 is a conventional function of the potentiometer 1123, and the principle thereof will not be described herein.

In this embodiment, the potentiometer feedback shaft 119 is in spline transmission connection with the gear 116 to be measured, and the potentiometer feedback shaft 119 can be connected with the potentiometer 1123 through a D-shaped connecting sleeve.

In addition, the potentiometer feedback shaft 119 has a matching hole, the gear shaft 115 of the gear 116 to be measured extends into the matching hole, the gear shaft 115 is rotatably arranged on the lower housing 113, the potentiometer feedback shaft 119 is in running fit with the upper box plate 117 in the actuator housing 109 through the bearing seat 118, the potentiometer feedback shaft 119 is made of POM material, and due to the self-lubricating characteristic of the POM material, the potentiometer feedback shaft 119 can play a lubricating role between the gear shaft 115 and the bearing seat 118.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. A ball valve actuator, comprising:

an actuator housing (109);

an actuator output shaft (104) disposed within the actuator housing (109) and having one end extending out of the actuator housing (109) for connection to a manual mechanism (105);

the driving motor (103) is arranged in the actuator shell (109) and is in transmission connection with the actuator output shaft (104) through a gear transmission chain, at least one gear in the gear transmission chain is a sliding gear (102), and the sliding gear (102) is slidably sleeved on the gear shaft (108);

a first return spring (106) for driving the sliding gear (102) in engagement in the gear train;

the manual switching rod (101) is slidably arranged in the actuator shell (109) and used for driving the sliding gear (102) to be separated from the meshing state in the gear transmission chain, and one end of the manual switching rod (101) is exposed out of the actuator shell (109).

2. The ball valve actuator according to claim 1, wherein the top of the actuator housing (109) is provided with a pressing chute (1091);

one end of the manual switching rod (101) exposed out of the actuator shell (109) is a pressing part (1011), the pressing part (1011) is in sliding fit in the pressing sliding groove (1091), and a sliding hole for the manual switching rod (101) to extend into the actuator shell (109) is formed in the bottom wall of the pressing sliding groove (1091).

3. The ball valve actuator according to claim 2, wherein a lower end of the pressing portion (1011) is provided with a limit catch for engagement with the slide hole, the limit catch being engaged with the slide hole when the slide gear (102) is in an engaged state in the gear train, and an upper surface of the pressing portion (1011) is flush with an upper surface of the pressing chute (1091).

4. A ball valve actuator of claim 3, wherein the limit catch is an elastic catch.

5. A ball valve actuator according to claim 3, wherein the pressing portion (1011) comprises a stem portion and a button portion located at a tip of the stem portion, an outer diameter of the button portion being larger than an outer diameter of the stem portion;

the second reset elastic piece (107) is sleeved on the rod part, one end of the second reset elastic piece (107) is propped against the button part, and the other end of the second reset elastic piece is propped against the bottom wall of the pressing sliding groove (1091) so as to drive the limiting buckle to be clamped with the sliding hole.

6. The ball valve actuator of claim 1, wherein the first return spring (106) is a tower spring having a smaller diameter end abutting the sliding gear (102).

7. The ball valve actuator of any one of claims 1-6, wherein the upper casing of the actuator housing (109) is provided with an adjustment aperture at the position of the dial switch (1121), the adjustment aperture being sealingly engaged by a dial cover (110).

8. The ball valve actuator of claim 7, wherein the dial cap (110) is snap-fit over the adjustment aperture by a dial cap snap-fit, and the dial cap (110) is sealed to the inner wall of the adjustment aperture by a V-shaped seal ring (111).

9. The ball valve actuator of claim 7, wherein an indicator lamp (1122) is provided on a circuit board (112) on which the dial switch (1121) is mounted, the dial cover (110) is a transparent dial cover, and a light guide column (1101) corresponding to the indicator lamp (1122) and pointing toward the indicator lamp (1122) is provided on a side of the dial cover (110) facing the indicator lamp (1122).

10. The ball valve actuator of any one of claims 1-6, further comprising a detection device for detecting the position of a sector gear (1041) on the actuator output shaft (104), the detection device comprising:

a potentiometer (1123) arranged on a circuit board (112) of the ball valve actuator;

and one end of a potentiometer feedback shaft (119) penetrates through the circuit board (112) and is connected with the potentiometer (1123), the other end of the potentiometer feedback shaft is in transmission connection with a gear (116) to be detected in the gear transmission chain, and the potentiometer (1123) obtains the position of the sector gear (1041) through the transmission ratio of the gear (116) to be detected to the sector gear (1041).

11. The ball valve actuator of claim 10, wherein the potentiometer feedback shaft (119) is in splined drive connection with the gear (116) under test; and/or the number of the groups of groups,

the potentiometer feedback shaft (119) is connected with the potentiometer (1123) through a D-shaped connecting sleeve.

12. The ball valve actuator according to claim 10, wherein the potentiometer feedback shaft (119) is provided with a matching hole, a gear shaft (115) of the gear to be tested (116) stretches into the matching hole, the potentiometer feedback shaft (119) is in rotary fit with an upper box plate (117) in the actuator housing (109) through a bearing seat (118), and the potentiometer feedback shaft (119) is made of POM material.