Actuator and air valve

Abstract

The utility model discloses an actuator and an air valve, and the actuator comprises a housing which defines an inner cavity; the driving device is arranged in the inner cavity, and the driving device is provided with an output shaft; the indicating device comprises a linkage piece arranged in the inner cavity, and an output shaft of the driving device is in transmission connection with the transmission mechanism through the linkage piece; the indicating piece is arranged on the shell, and an opening degree mark is arranged on the indicating piece; the adjusting part is connected with the linkage part and is in transmission connection with the transmission mechanism through the linkage part, and the adjusting part can drive the transmission mechanism to rotate under the action of external force so as to adjust the opening degree of the air valve and is used for indicating the numerical value of the opening degree of the air valve on the indicating part. According to the utility model, the current opening degree of the air valve can be displayed, and the opening degree of the air valve can be manually adjusted, so that the air valve can continuously work without stopping work and production to wait for maintenance, and the working efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of air valve technology, and in particular to an actuator and an air valve. Background Technology

[0002] Air volume regulating valves (or simply air valves) are simple in structure and widely used in various industries, such as pharmaceuticals, healthcare, electronics, chemicals, and machinery, as control devices for regulating or cutting off the flow of gas media. With the technological advancements in air valves, those with air volume measurement capabilities have further expanded their application range. By first measuring the air volume within the pipeline and then adjusting the valve opening accordingly, more precise flow control is achieved.

[0003] In existing technology, air valves typically consist of the following basic components: valve body, valve blades, and electric actuator. The valve body, the outer casing of the air valve, is usually made of metal or plastic. It helps guide gas in a designated direction. The valve blades, located within the valve body, determine the opening degree of the air valve. Rotating or moving the valve blades regulates the airflow through the valve body. In electric air valves, the motor is a common electric actuator. It rotates or moves the valve blades according to a control signal, thereby regulating the airflow. However, when the electric actuator malfunctions, the valve blades often fail to adjust automatically, usually requiring production stoppage for repairs, resulting in economic losses. Especially in special environments such as negative or positive pressure laboratories, the system must operate continuously to maintain cleanliness, and interruption is not permitted.

[0004] Therefore, existing technologies lack effective means to regulate airflow under fault conditions and urgently need improvement. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art of how to maintain the airflow regulation capability of an air valve by adjusting its opening degree through an actuator when the valve is in a faulty state. This invention provides an actuator and an air valve. The actuator can display the current air valve opening degree and allows manual adjustment of the valve opening degree, enabling the air valve to continue operating without requiring work stoppages or production shutdowns while waiting for valve repairs, thus effectively improving work efficiency.

[0006] To solve the above-mentioned technical problems, the present invention discloses an actuator, comprising: a housing defining an inner cavity; a drive device disposed in the inner cavity, the drive device having an output shaft; and an indicating device, comprising: a linkage member disposed in the inner cavity, the output shaft of the drive device being driven to the transmission mechanism via the linkage member; an indicating member disposed on the housing, the indicating member having an opening degree marking; and an adjusting member connected to the linkage member and driven to the transmission mechanism via the linkage member, the adjusting member being able to drive the transmission mechanism to rotate under the action of an external force to adjust the opening degree of the air valve, and being used to indicate the numerical value of the air valve opening degree on the indicating member.

[0007] Using the above technical solution, the actuator in this embodiment of the application is used to connect with the transmission mechanism and the regulating component of the air valve through the linkage component, so that the operator can manually control the regulating component to drive the transmission mechanism to rotate, thereby driving the regulating blade of the air valve to rotate, thereby adjusting the opening degree of the air valve, and so that the regulating component can point to the corresponding opening degree mark on the indicator to indicate the numerical value of the opening degree of the air valve.

[0008] Furthermore, through the adjusting and indicating components of the actuator in this embodiment, the operator can directly observe the opening degree of the air valve. In other words, when the air valve malfunctions, the operator can manually adjust the adjusting component to drive the transmission mechanism to rotate and adjust the air valve opening, ensuring that the air valve continues to operate even in the event of a malfunction. This solves the problems of unknown adjustment blade opening and unadjustable air valve opening during air valve malfunctions, demonstrating good practicality.

[0009] Furthermore, in this embodiment, the valve opening value can be read via the actuator's adjusting and indicating components, and the valve opening can be adjusted via the actuator's adjusting components without altering the valve's internal structure, such as by adding openings to the valve's cylinder. This makes the actuator of this embodiment applicable to various valve specifications, offering good practicality and wide applicability. Additionally, the actuator of this embodiment reduces the need for openings in the valve's cylinder and eliminates the need for additional adjusting mechanisms on the outside of the cylinder. This not only reduces production costs but also decreases the valve's air leakage rate.

[0010] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the linkage component includes: a first end portion, which passes through the housing and is rotatably connected to the housing; along a first direction, a first connecting member and a second connecting member are respectively provided on opposite sides of the first end portion; the first connecting member is connected to the transmission mechanism; the second connecting member is disposed in the inner cavity and is connected to the output shaft; and a second end portion, which is connected to the adjusting member.

[0011] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the first connecting member includes a first recess, the shape of which is adapted to the shape of the transmission mechanism, and the second connecting member includes a second recess, the shape of which is adapted to the shape of the output shaft.

[0012] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the housing has a first opening, and the indicator is disposed at the edge of the first opening; the adjusting member is an adjusting lever, the adjusting lever is connected to the second end and extends out of the first opening, so that the adjusting lever can rotate relative to the indicator in a second direction, and in the first direction, the adjusting lever is located on the side of the indicator away from the air valve, and the second direction surrounds the first direction.

[0013] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the linkage further includes a bending portion; the bending portion is disposed in the inner cavity, one end of the bending portion is connected to the outer wall of the first end, and the other end of the bending portion is connected to an adjusting lever, so that the adjusting lever is spaced apart from the driving device and can move around the driving device along the second direction.

[0014] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the housing further includes a transparent protective cover; the transparent protective cover defines a receiving cavity and covers the edge of the first opening, the indicator is received in the receiving cavity, the adjusting lever extends into the receiving cavity and is rotatable relative to the indicator in the receiving cavity along the second direction.

[0015] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the linkage further includes: a bent arm disposed in the inner cavity, the bent arm being connected to the first end and the second end respectively, and bent in a direction away from the driving device, so that the driving device and the bent arm are spaced apart; the adjusting member is a knob, the housing has a second opening, the indicating member is disposed at the edge of the second opening, and along the first direction, the second end passes through the second opening and is connected to the knob, so that the knob can rotate relative to the indicating member along the second direction.

[0016] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the housing includes: an upper cover, a second opening being disposed on the upper cover; and a lower shell, wherein the upper cover and the lower shell together define the inner cavity, and a first end is disposed through the lower shell.

[0017] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the opening degree indicator includes a closed scale line and a fully open scale line; when the air valve is in the closed state, the adjusting member points to the closed scale line of the opening degree indicator; when the air valve is in the fully open state, the adjusting member points to the fully open scale line of the opening degree indicator.

[0018] According to another specific embodiment of the present invention, an actuator is disclosed, wherein the angle range between the closed scale line and the fully open scale line is 90°.

[0019] This utility model also discloses a damper, comprising: the actuator described in any of the above embodiments; a valve body, including a cylinder and an adjusting blade disposed within the cylinder, the adjusting blade being rotatable within the cylinder to adjust the opening degree of the valve body; a transmission mechanism, one end of which is operatively connected to the adjusting blade, and the other end of which is operatively connected to the output shaft of the drive device via the linkage member; the adjusting member being operatively pointed at any angle between the closed and fully open scale lines of the opening degree indicator under the action of an external force, thereby driving the transmission mechanism to adjust the opening degree of the damper between the closed and fully open states.

[0020] To make the above-mentioned contents of this utility model more obvious and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 A perspective view of an actuator and a damper according to an embodiment of the present invention is shown. Figure 1 ;

[0022] Figure 2 A perspective view of an actuator and a damper according to an embodiment of the present invention is shown. Figure 2 ;

[0023] Figure 3 A cross-sectional schematic diagram of the actuator and air valve according to an embodiment of the present invention is shown;

[0024] Figure 4 A perspective view of an actuator according to an embodiment of the present invention is shown, wherein the transparent protective cover is not shown;

[0025] Figure 5 An exploded view of an actuator according to an embodiment of the present invention is shown, wherein the top cover is not shown;

[0026] Figure 6 A schematic cross-sectional view of an actuator according to an embodiment of the present invention is shown. Figure 1 ;

[0027] Figure 7 A schematic cross-sectional view of an actuator according to an embodiment of the present invention is shown. Figure 2 The air valve is in the closed state;

[0028] Figure 8 A schematic cross-sectional view of an actuator according to an embodiment of the present invention is shown. Figure 3 The air valve is fully open.

[0029] Figure 9A A perspective view of the actuator and air valve according to another embodiment of the present invention is shown;

[0030] Figure 9B A front view of the actuator and air valve according to another embodiment of the present invention is shown, wherein the air valve is in the fully open state;

[0031] Figure 10 An exploded view of an actuator according to another embodiment of the present invention is shown;

[0032] Figure 11 A perspective view of the linkage, drive device, and adjustment component according to another embodiment of the present invention is shown.

[0033] Figure 12 A cross-sectional schematic diagram of an actuator according to another embodiment of the present invention is shown. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0035] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0037] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0038] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0040] refer to Figure 1 and Figure 2 This application provides a wind valve 1, including: valve body 10, adjusting blade 12, actuator 20 and flow detection device 30.

[0041] Among them, such as Figure 1 As shown, the valve body 10 includes a cylinder 11, the cylinder 11 having a Z-shape along the axial direction of the valve 1 (e.g., ...). Figure 1 The air cavity 101 extends along the Z-axis. Along the Z-axis, both ends of the valve body 10 have openings communicating with the air cavity 101. Figure 1 The diagram shows an opening at one end of the valve body 10. Exemplarily, the valve body 10 is cylindrical.

[0042] It is understood that the number of adjusting blades 12 is not limited in this application embodiment, and can be selected according to the needs of the air valve 1. For example, the number of adjusting blades 12 can be one or more. This application embodiment is described using the example of multiple adjusting blades 12.

[0043] like Figure 2 As shown, the valve body 10 includes a plurality of adjusting blades 12, which are rotatable within the air chamber 101 to adjust the opening degree of the valve body 10 (i.e., the air valve opening degree). For example, refer to... Figure 2 and combined Figure 3 The air cavity 101 has a centerline O extending along the axial direction Z (e.g., Figure 3 As shown by the dashed line in the middle), multiple adjusting blades 12 are arranged circumferentially around the center line O (i.e., the circumferential R of the damper 1, as shown in the dashed line). Figure 2 As shown in the R direction, it is set and located within the air cavity 101. Each adjusting blade 12 has a rotating shaft 121, and the rotating shaft 121 of each adjusting blade 12 is along the radial X direction of the air valve 1 (as shown in the R direction). Figure 3 Extending in the X direction (as shown), the radial direction X is perpendicular to the axial direction Z. For example... Figure 3 As shown, one end 1211 of the rotating shaft is rotatably connected to the inner wall of the cylinder 11, so that the rotating shaft 121 of each adjusting blade 12 can rotate relative to the cylinder 11 in the air cavity 101 to adjust the opening of the air valve.

[0044] like Figure 1 As shown, the flow detection device 30 is located inside the valve body 10 and installed within the air cavity 101. It is used to detect the flow rate of the fluid within the valve body 10. The flow detection device 30 is electrically connected to the actuator 20. Exemplarily, the flow detection device 30 includes three impeller-type anemometers 31 and a detection unit (not shown). The three impeller-type anemometers 31 are located on the side of the air cavity 101 away from the plurality of adjusting blades 12. However, this is not a limitation; the number of impeller-type anemometers 31 in this embodiment may also include one, two, four, five, seven, or more.

[0045] It is understandable that when airflow passes through the impeller of the impeller-type anemometer 31, the airflow drives the impeller to rotate. During the rotation of the impeller, the detection unit (e.g., a Hall circuit board) detects the change in the magnetic field caused by the rotation of the magnetic ring installed on the impeller. The Hall circuit board converts this change in magnetic field into an electrical signal, and by counting this electrical signal, the rotational speed of the impeller can be obtained. Therefore, the airflow velocity, i.e., the wind speed of the damper 1, can be calculated based on the rotational speed of the impeller. This application embodiment does not impose specific limitations on the structure of the flow detection device 30, as long as it can meet the sealing performance requirements of the damper 1.

[0046] refer to Figure 1 and combined Figure 2 and Figure 3 In this embodiment, the actuator 20 is located on the outside of the valve body 10. The actuator 20 includes a housing 21, a drive device 22, and an indicating device 23. The air valve 1 in this embodiment also includes a transmission mechanism 40. Wherein, as... Figure 4 and Figure 5 As shown, the indicating device 23 includes: a linkage 231, an indicating element 232, and an adjusting element 233.

[0047] Specifically, such as Figures 3 to 5As shown, the housing 21 defines an inner cavity 21a, and a drive device 22 is disposed within the inner cavity 21a, having an output shaft 221. A linkage 231 is disposed within the inner cavity 21a, and the output shaft 221 of the drive device 22 is connected to the transmission mechanism 40 via the linkage 231. An indicator 232 is disposed on the housing 21, and an opening degree mark 2321 is provided on the indicator 232. An adjusting member 233 is connected to the linkage 231 and is connected to the transmission mechanism 40 via the linkage 231, and can point to the opening degree mark 2321 on the indicator 232 to indicate the numerical value of the valve opening.

[0048] For example, the housing 21 includes an upper cover 211 and a lower cover 212, which together define an inner cavity 21a.

[0049] For example, the transmission mechanism 40 has a transmission shaft 41 and is connected to the aforementioned plurality of adjusting blades 12 via the transmission shaft 41. The transmission shaft 41 is rotatable to drive each adjusting blade 12 to rotate about its respective axis 121 to adjust the opening of the damper. Figure 3 As shown, the drive shaft 41 extends radially X. One end 4101 of the drive shaft extends out of the valve body 10 to connect with the linkage 231 in the housing 21 of the actuator 20. The other end 4102 of the drive shaft is located in the air cavity 101 and is connected to the transmission unit 50 of the air valve 1 so that the drive shaft 41 can be connected to the aforementioned multiple adjusting blades 12.

[0050] For example, the driving device 22 in this application embodiment is a motor, used to drive the output shaft 221 to rotate. The output shaft 221 is connected to the transmission shaft 41 through the linkage 231.

[0051] Thus, on the one hand, when the air valve 1 of this application embodiment is working normally, that is, when the air valve 1 does not malfunction, the actuator 20 can electrically control the drive device 22 to drive the output shaft 221 to rotate, and drive the transmission shaft 41 to rotate through the transmission between the output shaft 221, the linkage 231 and the transmission shaft 41 of the transmission mechanism 40, thereby controlling the rotation angle of the adjusting blade 12 in the air cavity 101 to adjust the opening degree of the air valve.

[0052] On the other hand, when the damper 1 in this embodiment malfunctions, the actuator 20 cannot continue to electrically control the adjusting blade 12 to adjust the damper opening. At this time, since the adjusting member 233 in this embodiment is connected to the linkage member 231 and is connected to the transmission mechanism 40 through the linkage member 231, the damper 233 is in a driving connection with the transmission mechanism 40.

[0053] In other words, when the transmission shaft 41 of the transmission mechanism 40 in the air valve 1 rotates, the adjusting member 233 will also move accordingly through the transmission mechanism 40 and the linkage member 231. Therefore, by observing the opening indicator 2321 pointed to by the position of the adjusting member 233 at this time, the movement state of the transmission mechanism 40 can be observed, that is, the opening degree of the air valve can be determined. Furthermore, in this embodiment, the adjusting member 233 can also drive the linkage member 231 to move under the action of external force (e.g., manually by an operator), and through the transmission between the linkage member 231 and the transmission mechanism 40, drive the transmission mechanism 40 to rotate to adjust the opening degree of the air valve, ensuring that the air valve 1 can continue to operate in the event of a malfunction.

[0054] The structure and working principle of the indicator device of the actuator according to the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0055] Figure 4 According to one embodiment of this application, a schematic structure of an actuator is shown. Figure 5 An exploded view of an actuator 20 is shown according to one embodiment of this application. Figure 6 A cross-sectional schematic diagram of an actuator 20 is shown according to one embodiment of this application. Exemplarily, the adjusting member 233 of the indicating device 23 in this embodiment of the application is an adjusting lever 233a.

[0056] like Figure 4 and Figure 5 As shown, the linkage 231 of the indicating device 23 in this embodiment includes: a first end 2311 and a second end 2312. Specifically, in conjunction with Figure 6 As shown, the first end 2311 passes through the housing 21 and is rotatably connected to the housing 21, along the first direction (i.e., the radial direction of the air valve 1, such as...). Figure 4 and Figure 5 As shown in the X direction, a first connector 23111 and a second connector 23112 are respectively provided on opposite sides of the first end 2311. The first connector 23111 is connected to the transmission shaft (not shown in the figure) of the transmission mechanism, and the second connector 23112 is disposed in the inner cavity 21a and connected to the output shaft 221.

[0057] like Figure 6 As shown, the second end 2312 is connected to the adjusting member 233 (i.e., the adjusting lever 233a). Thus, the adjusting member 233 can drive the second end 2312 of the linkage member 231 to rotate in the second direction (i.e., the circumferential direction R1 of the output shaft 221) under the action of external force (e.g., manual operation by the operator or drive device 22). The second end 2312 drives the first end 2311 to rotate in the second direction R1, and drives the transmission shaft of the transmission mechanism to rotate through the first end 2311, thereby realizing the adjustment of the opening degree of the air valve. The second direction R1 surrounds the first direction X.

[0058] Continue to refer to Figure 5 and Figure 6 The first connecting member 23111 includes a first recess 23111a, the shape of which is adapted to the shape of the transmission mechanism 40. The second connecting member 23112 includes a second recess 23112a, the shape of which is adapted to the shape of the output shaft 221. Exemplarily, one end 4101 of the transmission shaft of the transmission mechanism 40 extends into the first recess 23111a and is connected to it in a convex-concave fit. The output shaft 221 extends into the second recess 23112a and is connected to it in a convex-concave fit, so as to realize the transmission of the transmission mechanism 40, the first end 2311 of the linkage member 231 and the output shaft 221, so that the transmission mechanism 40, the linkage member 231 and the output shaft 221 can move synchronously.

[0059] This application does not specifically limit the structure of the first connector 23111 and the second connector 23112. In other possible implementations, the first connector 23111 may be a protrusion, in which case the transmission mechanism 40 may have a recess that can engage with the first connector 23111; or, the second connector 23112 may be a protrusion, in which case the output shaft 221 may have a recess that can engage with the first connector 23111; or, the transmission mechanism 40 and the first connector 23111, as well as the output shaft 221 and the second connector 23112 may also adopt other connection methods, such as snap-fit ​​or welding.

[0060] For example, such as Figure 6 As shown, in this embodiment, the first end 2311 passes through the lower shell 212 of the housing 21. The lower shell 212 has a third opening 2121 extending along the first direction X, and the first end 2311 passes through the third opening 2121 and is rotatably connected to the lower shell 212.

[0061] Specifically, along the first direction X, the sidewall of the third opening 2121 protrudes from the opposite sides of the lower shell 212, and one end of the sidewall of the third opening 2121 protrudes into the inner cavity 21a and extends into the first groove 23113. The first groove is provided at the first end 2311 and surrounds the second connector 23112 to restrict the rotation direction of the first end 2311 along the extension direction of the sidewall of the third opening 2121 (i.e., the circumferential direction R1 of the output shaft 221), so that the first end 2311 can rotate around the sidewall of the third opening 2121 along the second direction R1.

[0062] For example, the lower shell 212 also has a protrusion 214, which is disposed on one side of the lower shell 212 located in the inner cavity 21a and is spaced around the side wall of the third opening 2121. The protrusion 214 and the side wall of the third opening 2121 together define the second groove 214a, so that the outer side wall of the first groove 23113 can extend into the second groove 214a, thereby ensuring that the first end 2311 can rotate around the side wall of the third opening 2121 in the second direction R1, improving the stability of the rotational connection between the first end 2311 and the shell 21, and further improving the sealing performance between the first end 2311 and the lower shell 212 of the shell 21.

[0063] Continue to refer to Figure 5 The housing 21 also has a first opening 2122, and an indicator 232 is disposed at the edge of the first opening 2122. Specifically, as Figure 6 As shown, the lower shell 212 has a first opening 2122, and the adjusting lever extends out of the first opening 2122 from the inner cavity 21a. Since the adjusting lever is connected to the second end 2312 of the linkage 231, and the first end 2311 of the linkage 231 can rotate relative to the lower shell 212 in the second direction R1, this allows the adjusting lever to rotate relative to the indicator 232 in the second direction R1.

[0064] The opening mark 2321 on the indicator 232 includes multiple scale lines 23211 along the first direction X. The multiple scale lines 23211 are spaced apart along the second direction R1 on the side of the indicator 232 away from the air valve (not shown). The adjustment lever 233a is set toward the opening mark 2321 and is used to rotate along the second direction R1 to point to the corresponding scale line 23211.

[0065] For example, such as Figure 7 and Figure 8 As shown, the opening indicator 2321 includes a closed scale line 23211a and a fully open scale line 23211b. Specifically, when the air valve 1 is in the closed state, the adjusting lever points to the closed scale line 23211a of the opening indicator 2321. When the air valve 1 is in the fully open state, the adjusting lever points to the fully open scale line 23211b of the opening indicator 2321.

[0066] Therefore, when the air valve 1 malfunctions, such as when the air volume does not reach the set value, the pressure does not reach the set value, or the fault light flashes to indicate that the air valve 1 has malfunctioned, the operator can directly judge the rotation status of the regulating blade 12 by the opening mark 2321 set on the indicator 232 on the housing 21 of the actuator 20, without the need to connect to an additional device such as a display screen, which can effectively reduce costs.

[0067] Meanwhile, the operator can also rotate the adjusting component 233 (e.g., the adjusting lever) according to the rotation of the adjusting blade 12 to drive the transmission mechanism 40 to rotate and adjust the opening of the air valve, so that the air valve 1 can continue to work and wait for maintenance without stopping production.

[0068] For example, when it is necessary to switch the malfunctioning air valve 1 to the closed or near-closed state, simply rotate the adjustment lever from the fully open scale line 23211b toward the closed scale line 23211a. This can prevent the operator from accidentally rotating the adjustment lever from the closed scale line 23211a toward the fully open scale line 23211b, which could cause the risk of dangerous gas leakage and improve the safety of air valve 1.

[0069] In other words, by setting the opening indicator 2321, the operator can accurately determine which direction the adjusting component 233 (e.g., the adjusting lever) should be operated in. The operator can also accurately determine the degree of rotation of the adjusting component 233, so as to precisely control the rotation angle of the transmission mechanism 40 and the adjusting blade 12. This can avoid misoperation that causes the adjusting component 233 to rotate in the opposite direction, and can also avoid over-rotation of the adjusting component 233, which could damage the adjusting component 233, the transmission mechanism 40, and the adjusting blade 12.

[0070] For example, such as Figure 7 and Figure 8 As shown, the angle range between the closed scale line 23211a and the fully open scale line 23211b in this embodiment of the application is 90°. The multiple scale lines 23211 also include 20° scale lines, 40° scale lines, 60° scale lines and 80° scale lines arranged at intervals in sequence. In the closed state, the adjusting member 233 points to the closed scale line 23211a (i.e., the 0° scale line). In the open state, the adjusting member 233 points to any one of the 20° scale line, 40° scale line, 60° scale line and 80° scale line. In the fully open state, the adjusting member 233 points to the fully open scale line 23211b (i.e., the 90° scale line).

[0071] It should be noted that the aforementioned adjustment element 233 is not limited to pointing to any one of the 20° scale line, 40° scale line, 60° scale line, or 80° scale line, but can also point to any angle between the 0° scale line (i.e., the closed scale line 23211a) and the 90° scale line (the fully open scale line 23211b).

[0072] This application does not limit the interval values ​​of the multiple scale lines 23211. For example, the multiple scale lines 23211 may include 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, etc., which are set at intervals. Furthermore, this application does not specifically limit the structure of the opening indicator 2321. In the above embodiment, the opening indicator 2321 is in the form of an angle scale line, but it is not limited to this. In other possible embodiments, the opening indicator 2321 may simply be the angle value of the valve opening indicated by Arabic numerals.

[0073] For example, the indicator 232 is a sheet-like structure, and its projection in the first direction X is fan-shaped, while the adjustment lever is a columnar structure, and its projection in the first direction X is triangular.

[0074] For example, continue to refer to Figure 5 The linkage 231 in this embodiment of the application also includes a bent portion 2313. For example... Figure 6 As shown, the bent portion 2313 is disposed in the inner cavity 21a. One end of the bent portion 2313 is connected to the outer wall of the first end 2311, and the other end of the bent portion 2313 (i.e. the second end 2312) is connected to the adjusting lever 233a, so that the adjusting lever 233a can extend out of the first opening 2122 and be spaced apart from the driving device 22, and can move around the driving device 22 in the second direction R1, making the internal structure of the actuator 20 compact, reducing the space occupied, and facilitating the installation and maintenance of the air valve 1.

[0075] For example, such as Figure 5 and Figure 6 As shown, the housing 21 in this embodiment further includes a transparent protective cover 213. The transparent protective cover 213 covers the edge of the first opening 2122 and defines a receiving cavity 213a. When the transparent protective cover 213 covers the edge of the first opening 2122, the indicator 232 is received in the receiving cavity 213a, and the adjusting lever 233a extends into the receiving cavity 213a and can rotate relative to the indicator 232 in the second direction R1 within the receiving cavity 213a. Thus, the operator can observe the corresponding scale line pointed to by the adjusting lever 233a without opening the transparent protective cover 213, and thus observe the rotation of the adjusting blade 12 in the air cavity 101, i.e., the opening degree of the air valve, solving the problem that the opening degree of the adjusting blade 12 is unknown when the air valve 1 malfunctions.

[0076] Figures 9A to 12 A schematic structure of an actuator is shown according to another embodiment of this application. The drive unit 22, lower housing 212, and first end 2311 of the linkage 231 of the actuator in this embodiment are all connected to… Figures 1 to 8The actuator shown is the same as that of the first embodiment. The difference lies in that the upper cover 211, the second end 2312 of the linkage 231, the indicator 232, and the adjusting member 233 of the actuator in this embodiment are different from those of the actuator in the first embodiment. For example, the adjusting member 233 in this embodiment is a knob 233b.

[0077] In this embodiment, the second end 2312 of the linkage 231 passes through the upper cover 211 of the housing 21. The upper cover 211 has a second opening 2123 extending along the first direction X, and the second end 2312 passes through the second opening 2123 and is rotatably connected to the upper cover 211.

[0078] Specifically, along the first direction X, the sidewall of the second opening 2123 protrudes from the side of the upper cover 211 facing the inner cavity 21a and surrounds the second end 2312. That is, after the second end 2312 of the linkage 231 passes through the sidewall of the second opening 2123, it is connected to the knob 233b and rotatably connected to the sidewall of the second opening 2123, so that both the second end 2312 and the knob 233b can rotate relative to the upper cover 211 along the second direction R1. Thus, the knob 233b of this embodiment can be rotated under the action of external force (e.g., manually by the operator) to drive the second end 2312 to drive the first end 2311 to rotate along the second direction R1, and drive the transmission shaft of the transmission mechanism to rotate through the first end 2311, thereby realizing the adjustment of the air valve opening.

[0079] For example, such as Figure 10 and Figure 11 As shown, the linkage 231 in this embodiment of the application also includes a bent arm 2314. The bent arm 2314 is disposed in the inner cavity 21a and is connected to the first end 2311 and the second end 2312 respectively. It is bent in a direction away from the driving device 22 so that the driving device 22 and the bent arm 2314 are spaced apart. This allows the second end 2312 to extend out of the inner cavity 21a through the second opening 2123 of the upper cover 211. It also allows the linkage 231 to move relative to the driving device 22 in the second direction R1. This makes the internal structure of the actuator 20 compact, reduces the space occupied, and facilitates the installation and maintenance of the air valve 1.

[0080] This application embodiment does not specifically limit the structure of the linkage 231, as long as it enables the transmission mechanism 40 of the air valve 1, the adjusting member 233, and the output shaft 221 of the drive device 22 to be connected, so that the operator can manually adjust the opening of the air valve through the adjusting member 233, or the operator can observe the opening of the air valve by pointing the adjusting member 233 to the opening mark 2321 on the indicator 232.

[0081] For example, such as Figure 9B and Figure 12As shown, in this embodiment of the application, the indicator 232 is disposed around the edge of the second opening 2123, and the knob 233b is disposed along the first direction X toward the opening mark 2321 of the indicator 232, so that when the knob 233b is rotated relative to the upper cover 211 along the second direction R1, it can point to the opening mark 2321 of the indicator 232, and the rotation angle of the adjustment blade, i.e. the opening of the air valve, can be observed through the corresponding scale line 23211 pointed to by the knob 233b.

[0082] This application does not limit the shape of the adjusting member 233, for example, it can be a cube, a cylinder, or other shapes. In addition, in order to facilitate the comfort of the adjusting member 233, in some embodiments, the edges of the adjusting member 233 and the connection between the adjusting member 233 and the second end 2312 are rounded. This application does not limit this either, and it can be set according to the actual situation.

[0083] For example, such as Figure 10 and Figure 12 As shown, the upper cover 211 also has an annular protrusion 2111, which surrounds the indicator 232 and the knob 233b and is located on the side of the upper cover 211 away from the inner cavity 21a, so as to avoid the operator accidentally touching the knob 233b and improve the safety of the actuator's indicator device.

[0084] In summary, the actuator 20 of this embodiment is connected to the transmission mechanism 40 and the adjusting member 233 of the air valve 1 via the linkage 231, allowing the operator to manually control the adjusting member 233 to drive the transmission mechanism 40 to rotate, thereby rotating the adjusting blade 12 of the air valve 1 and adjusting the air valve opening. The adjusting member 233 also points to the corresponding opening indicator on the indicator 232 to indicate the numerical value of the air valve opening of the air valve 1. Furthermore, through the adjusting member 233 and the indicator 232 of the actuator 20 of this embodiment, the operator can directly observe the air valve opening of the air valve 1. That is, when the air valve 1 malfunctions, the operator can manually adjust the adjusting member 233 to drive the transmission mechanism 40 to rotate and adjust the air valve opening, ensuring that the air valve 1 continues to operate even when malfunctioning. This solves the problems of the unknown opening of the adjusting blade 12 and the inability to adjust the air valve opening when the air valve 1 malfunctions, demonstrating good practicality.

[0085] Furthermore, in this embodiment, the valve opening value of the air valve 1 can be read through the adjusting member 233 and the indicating member 232 of the actuator 20, and the valve opening of the air valve 1 can be adjusted through the adjusting member 233 of the actuator 20, without changing the internal structure of the air valve 1, such as adding openings to the cylinder 11 of the air valve 1. This makes the actuator 20 of this embodiment applicable to various specifications of air valves, with good practicality and wide applicability. In addition, the actuator 20 of this embodiment can reduce the need for openings in the cylinder 11 of the air valve 1 and eliminates the need to add an adjusting mechanism to the outside of the cylinder 11. This not only reduces production costs but also reduces air leakage rate.

[0086] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An actuator applied to a damper, the damper comprising an adjusting vane and a transmission mechanism, the transmission mechanism being tractively connected to the adjusting vane to adjust the opening degree of the damper, characterized in that, The actuator includes: The shell defines the internal cavity; A driving device is disposed in the inner cavity, and the driving device has an output shaft; Indicating device, including: A linkage component is disposed in the inner cavity, and the output shaft of the drive device is connected to the transmission mechanism through the linkage component; An indicator is disposed on the housing, and the indicator is provided with an opening degree mark; An adjusting component is connected to the linkage component and is connected to the transmission mechanism via the linkage component. The adjusting component can drive the transmission mechanism to rotate under the action of external force to adjust the opening degree of the air valve, and is used to indicate the numerical value of the opening degree of the air valve on the indicator.

2. The actuator according to claim 1, characterized in that, The linkage component includes: The first end is inserted through the housing and rotatably connected to the housing. Along the first direction, a first connector and a second connector are respectively provided on opposite sides of the first end. The first connector is connected to the transmission mechanism, and the second connector is disposed in the inner cavity and connected to the output shaft. The second end is connected to the adjusting member.

3. The actuator according to claim 2, characterized in that, The first connector includes a first recess, the shape of which is adapted to the shape of the transmission mechanism; the second connector includes a second recess, the shape of which is adapted to the shape of the output shaft.

4. The actuator according to claim 2 or 3, characterized in that, The housing has a first opening, and the indicator is disposed at the edge of the first opening; The adjusting element is an adjusting lever, which is connected to the second end and extends out of the first opening so that the adjusting lever can rotate relative to the indicator in a second direction. In the first direction, the adjusting lever is located on the side of the indicator away from the air valve, and the second direction surrounds the first direction.

5. The actuator according to claim 4, characterized in that, The linkage also includes a bent portion; The bent portion is disposed in the inner cavity. One end of the bent portion is connected to the outer wall of the first end, and the other end of the bent portion is connected to the adjusting lever, so that the adjusting lever is spaced apart from the driving device and can move around the driving device in the second direction.

6. The actuator according to claim 4, characterized in that, The housing also includes a transparent protective cover; The transparent protective cover defines a receiving cavity and covers the edge of the first opening. The indicator is received in the receiving cavity, and the adjustment lever extends into the receiving cavity and is rotatable relative to the indicator in the second direction within the receiving cavity.

7. The actuator according to claim 2 or 3, characterized in that, The linkage also includes: A curved arm is disposed in the inner cavity. The curved arm is connected to the first end and the second end respectively, and bends away from the driving device so that the driving device is spaced apart from the curved arm. The adjusting element is a knob, the housing has a second opening, the indicator is disposed at the edge of the second opening, and along the first direction, the second end passes through the second opening and is connected to the knob, so that the knob can rotate relative to the indicator along the second direction.

8. The actuator according to claim 7, characterized in that, The housing includes: The upper cover, wherein the second opening is provided on the upper cover; The lower shell, the upper cover and the lower shell together define the inner cavity, and the first end extends through the lower shell.

9. The actuator according to claim 1, characterized in that, The opening indicator includes a closed scale line and a fully open scale line; When the air valve is in the closed state, the adjusting element points to the closed scale line of the opening indicator; When the air valve is fully open, the adjusting element points to the fully open scale line of the opening indicator.

10. The actuator according to claim 9, characterized in that, The angle between the closed scale line and the fully open scale line is 90°.

11. A type of air valve, characterized in that, include: The actuator according to any one of claims 1-10; The valve body includes a cylinder and an adjusting vane disposed within the cylinder. The adjusting vane is rotatable within the cylinder to adjust the valve opening. A transmission mechanism, one end of which is connected to the adjusting blade, and the other end of which is connected to the output shaft of the drive device via the linkage; The adjusting component can be directed to any angle between the closed and fully open scale lines of the opening indicator under the action of external force, so as to drive the transmission mechanism to adjust the opening degree of the air valve between the closed and fully open states.

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