Electric actuator with long service life

Abstract

The utility model belongs to the technical field of electric actuators, and particularly relates to a long-service-life electric actuator which comprises an actuator body. An electrical box is arranged on the actuator body, a base is integrally formed at an opening in the bottom of the electrical box, a component mainboard is fixedly mounted on the base, and heat dissipation holes are formed in a left side plate and a right side plate of the electrical box; a drying box is arranged at the upper part of the electrical box; a plurality of drying cylinders are arranged in a left inner cavity and a right inner cavity of the electrical box, a ventilation channel is formed between every two adjacent drying cylinders, and air entering the electrical box through the heat dissipation holes penetrates through the ventilation channels to enter the electrical box; a barrel body of the drying barrel is of a net-shaped structure, so that air penetrating through the ventilation channel can make contact with a drying agent in the drying barrel, and the air is dried.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric actuators, and in particular relates to an electric actuator with a long service life. Background Art

[0002] Electric actuators are a common industrial automatic control device that can be used to control the opening and closing of valves and the size of the valve opening. As one of the important components of electric actuators, the service life of electric actuators is closely related to the use of the electrical box.

[0003] At present, the components inside the electrical box of the electric actuator tend to generate a lot of heat when used for a long time. Therefore, in the structural design of the electric actuator, it is first necessary to ensure the heat dissipation of the components inside the electrical box. However, in the traditional technical solution, holes are directly opened on the electrical box for heat dissipation. In this way, the components in the electrical box are also easily damaged due to moisture. Utility Model Content

[0004] The purpose of the embodiments of the present utility model is to provide an electric actuator with a long service life, aiming to solve the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model provides the following technical solutions.

[0006] A long-life electric actuator comprises an actuator body; an electrical box is arranged on the actuator body, a base is integrally formed at the bottom opening of the electrical box, a component mainboard is fixedly mounted on the base, and heat dissipation holes are opened on both left and right side plates of the electrical box;

[0007] A drying box is provided on the upper part of the electrical box;

[0008] A plurality of drying cylinders are arranged in the left and right inner cavities of the electrical box, and a ventilation duct is arranged between two adjacent drying cylinders, that is, the air entering the electrical box through the heat dissipation holes passes through the ventilation duct and enters the electrical box; the cylinder body of the drying cylinder adopts a mesh structure, so that the air passing through the ventilation duct can contact the desiccant in the drying cylinder, so as to dry the air;

[0009] The top of the drying cylinder is connected to the drying box, and the desiccant in the drying box enters the drying cylinder;

[0010] A propeller is rotatably arranged in each drying cylinder. When the propeller rotates, the desiccant in the drying cylinder can be stirred to improve the contact effect between the desiccant and the air passing through the ventilation duct.

[0011] Furthermore, the base is fixedly mounted on the actuator body by mounting screws, so as to facilitate removal of the electrical box from the actuator body.

[0012] Furthermore, a second sealing cover is provided at the top opening of the drying box, and after the second sealing cover is opened, desiccant can be added into the drying box.

[0013] Furthermore, a first sealing cover is provided at the bottom of the left and right side panels of the electrical box. The first sealing cover is used to seal the bottom end of the drying cylinder. When the desiccant needs to be replaced, the first sealing cover is opened first to drain the desiccant in the drying cylinder, and then the first sealing cover is closed, and then desiccant is added to the drying box.

[0014] Furthermore, a transmission box is provided on the top of the electrical box, and a driving assembly for rotating the propeller is provided in the transmission box, wherein the driving assembly includes a driving motor, and a second bevel gear is drivingly connected to the output shaft of the driving motor, and a first bevel gear meshing with the second bevel gear is coaxially installed on the top of the propeller. Therefore, the propeller can be driven to rotate by utilizing the started driving motor.

[0015] Furthermore, the driving motor adopts a forward and reverse servo motor, which can make the propeller rotate in both directions, thereby improving the stirring effect of the desiccant in the drying cylinder.

[0016] Furthermore, a humidity sensor is provided in the electrical box, and the humidity sensor is electrically connected to the drive motor. The humidity sensor is used to monitor the air humidity in the electrical box. When the air humidity in the electrical box is greater than a threshold value, the humidity sensor triggers the drive motor to operate.

[0017] Compared with the prior art, the beneficial effects of the long-life electric actuator of the utility model are:

[0018] First, the components and motherboard will generate heat after long-term use. Therefore, the left and right side panels of the electrical box of the utility model are provided with heat dissipation holes to improve the air circulation effect inside and outside the electrical box to ensure the heat dissipation effect of the components and motherboard;

[0019] Second, multiple drying cylinders are arranged in the left and right inner cavities of the electrical box, and there is a ventilation duct between two adjacent drying cylinders, that is, the air entering the electrical box through the heat dissipation holes passes through the ventilation duct and enters the electrical box; the cylinder body of the drying cylinder adopts a mesh structure, so that the air passing through the ventilation duct can contact the desiccant in the drying cylinder to dry the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0021] Figure 1 This is a three-dimensional structural diagram of a long-life electric actuator of the utility model;

[0022] Figure 2 This is a front view of a long-life electric actuator of the utility model;

[0023] Figure 3 for Figure 1 The enlarged schematic diagram of point a in the middle;

[0024] Figure 4 This is a diagram of the internal structure of an electrical box in a long-life electric actuator of the utility model;

[0025] Figure 5 It is a schematic diagram of the meshing of gears in the long-life electric actuator of the utility model;

[0026] Figure 6 The figure is a schematic diagram of the layout of the transmission chain in the long-life electric actuator of the utility model.

[0027] The reference numerals are as follows:

[0028] 100, actuator body; 200, electrical box; 201, base; 202, transmission box; 203, heat dissipation hole; 204, first sealing cover; 205, mounting screws; 206, drying box; 207, second sealing cover; 300, component main board; 400, drying cylinder; 401, propeller; 402, first bevel gear; 500, drive motor; 501, second bevel gear; 502, transmission chain; 600, humidity sensor. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0031] like Figure 1-Figure 4 As shown, in one embodiment of the utility model, a long-life electric actuator includes an actuator body 100; an electrical box 200 is arranged on the actuator body 100, and a base 201 is integrally formed at the bottom open portion of the electrical box 200, and a component mainboard 300 is fixedly mounted on the base 201. The component mainboard 300 will generate heat after long-term use. Therefore, heat dissipation holes 203 are opened on the left and right side panels of the electrical box 200 of the utility model to improve the circulation effect of air inside and outside the electrical box 200 to ensure the heat dissipation effect of the component mainboard 300.

[0032] Furthermore, in the embodiment of the present utility model, the base 201 is fixedly mounted on the actuator body 100 by means of mounting screws 205 , so as to facilitate the removal of the electrical box 200 from the actuator body 100 .

[0033] Furthermore, in order to prevent moisture contained in the air entering the electrical box 200 from affecting the component mainboard 300, it is necessary to remove moisture from the air entering the electrical box 200; wherein, a drying box 206 is provided at the upper portion of the electrical box 200, and a second sealing cover 207 is provided at the top opening of the drying box 206. After opening the second sealing cover 207, desiccant can be added into the drying box 206.

[0034] Furthermore, a plurality of drying cylinders 400 are provided in the left and right inner cavities of the electrical box 200, and a ventilation duct is provided between two adjacent drying cylinders 400, that is, the air entering the electrical box 200 through the heat dissipation holes 203 passes through the ventilation duct and enters the electrical box 200; the cylinder body of the drying cylinder 400 adopts a mesh structure, so that the air passing through the ventilation duct can come into contact with the desiccant in the drying cylinder 400 to dry the air.

[0035] Furthermore, the top of the drying cylinder 400 is connected to the drying box 206, and the desiccant in the drying box 206 enters the drying cylinder 400;

[0036] The bottom of the left and right side panels of the electrical box 200 are both provided with a first sealing cover 204, which is used to seal the bottom end of the drying cylinder 400. When the desiccant needs to be replaced, the first sealing cover 204 is first opened to drain the desiccant in the drying cylinder 400, and then the first sealing cover 204 is closed, and then desiccant is added to the drying box 206.

[0037] Please continue reading Figure 4 In the embodiment of the utility model, a propeller 401 is rotatably provided in each drying cylinder 400. When the propeller 401 rotates, the desiccant in the drying cylinder 400 can be stirred to improve the contact effect between the desiccant and the air passing through the ventilation duct.

[0038] like Figure 4 and Figure 5 As shown, a transmission box 202 is arranged on the top of the electrical box 200, and a driving component for rotating the propeller 401 is arranged in the transmission box 202, wherein the driving component includes a driving motor 500, and a second bevel gear 501 is drivingly connected to the output shaft of the driving motor 500, and a first bevel gear 402 meshing with the second bevel gear 501 is coaxially mounted on the top of the propeller 401, so that the started driving motor 500 can be used to drive the propeller 401 to rotate.

[0039] Preferably, the driving motor 500 is a forward and reverse servo motor, which can make the propeller 401 rotate in both directions, thereby improving the stirring effect of the desiccant in the drying cylinder 400.

[0040] There may be multiple drive motors 500 , and there is a one-to-one correspondence between the multiple drive motors 500 and the multiple propellers 401 .

[0041] In addition, if Figure 6 As shown, in another embodiment of the present invention, the number of the driving motor 500 can be one, and the driving motor 500 drives the plurality of second bevel gears 501 to rotate synchronously, wherein two adjacent second bevel gears 501 are connected through a transmission chain 502 .

[0042] Further, such as Figure 4 As shown, a humidity sensor 600 is also provided in the electrical box 200. The humidity sensor 600 is electrically connected to the drive motor 500. The humidity sensor 600 is used to monitor the air humidity in the electrical box 200. When the air humidity in the electrical box 200 is greater than a threshold value, the humidity sensor 600 triggers the drive motor 500 to operate.

[0043] The above solutions are only an illustration of a preferred example, but are not limited thereto. When implementing the present utility model, appropriate replacement and / or modification can be performed according to user needs.

[0044] The number of devices and processing scales described here are used to simplify the description of the utility model. Applications, modifications and variations of the utility model are obvious to those skilled in the art.

[0045] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A long-life electric actuator, comprising an actuator body (100); characterized in that: An electrical box (200) is provided on the actuator body (100); a base (201) is integrally formed at the bottom opening of the electrical box (200); a component mainboard (300) is fixedly mounted on the base (201); and heat dissipation holes (203) are provided on both left and right side panels of the electrical box (200); A drying box (206) is provided on the upper portion of the electrical box (200); A plurality of drying cylinders (400) are disposed in the left and right inner cavities of the electrical box (200), and a ventilation passage is provided between two adjacent drying cylinders (400); the cylinder body of the drying cylinder (400) adopts a mesh structure; The top end of the drying cylinder (400) is in communication with the drying box (206); A propeller (401) is rotatably arranged in each drying cylinder (400).

2. A long-life electric actuator according to claim 1, characterized in that: The base (201) is fixedly mounted on the actuator body (100) via mounting screws (205).

3. A long-life electric actuator according to claim 2, characterized in that: A second sealing cover (207) is provided at the top opening of the drying box (206).

4. A long-life electric actuator according to claim 3, characterized in that: The bottoms of the left and right side panels of the electrical box (200) are both provided with first sealing covers (204).

5. A long-life electric actuator according to any one of claims 2 to 4, characterized in that: A transmission box (202) is arranged on the top of the electrical box (200), and a driving assembly for rotating the propeller (401) is arranged inside the transmission box (202), wherein the driving assembly includes a driving motor (500), a second bevel gear (501) is drivingly connected to the output shaft of the driving motor (500), and a first bevel gear (402) meshing with the second bevel gear (501) is coaxially mounted on the top of the propeller (401).

6. A long-life electric actuator according to claim 5, characterized in that: The driving motor (500) is a forward and reverse servo motor.

7. A long-life electric actuator according to claim 6, characterized in that: A humidity sensor (600) is also provided in the electrical box (200), and the humidity sensor (600) is electrically connected to the drive motor (500).

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