Waterproof electric actuator

Abstract

The utility model relates to a waterproof electric actuator, and belongs to the field of electric actuators. According to the technical scheme, the device comprises an upper shell and a lower shell, the upper shell and the lower shell are connected through bolts, the device further comprises a driving mechanism, the driving mechanism is arranged on the lower shell and comprises an opening degree displayer, an opening degree display window is formed in the upper shell, and the opening degree display window is used for externally observing the opening degree displayer. And a humidity-sensitive color-changing coating is sprayed on the opening degree display. Through the opening degree displayer arranged in the actuator and the humidity-sensitive color-changing coating arranged on the opening degree displayer, after waterproof measures of the electric actuator lose efficacy, the humidity in the electric actuator is increased, the color of the humidity-sensitive color-changing coating changes accordingly, and the humidity-sensitive color-changing coating is used for warning workers that the waterproof measures of the electric actuator lose efficacy. Therefore, workers can find and replace the damaged waterproof electric actuator in time, and the risk of accidents is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuators, in particular to a waterproof electric actuator. Background Art

[0002] The actuator is an essential and important part of the automatic control system. Its function is to receive the control signal sent by the controller, change the size of the controlled medium, and thus maintain the controlled variable at the required value or within a certain range. Electric actuators are widely used in power plants, water plants, cement plants, sewage treatment plants, etc.

[0003] Existing electric actuators are generally provided with a handle component, which is used when the electric actuator loses power or needs manual adjustment. However, there is a gap between the handle and the outer cover in the prior art, and the waterproof performance is poor, which affects the normal operation of the equipment. For this reason, the patent application document with application number CN201820864922.0 proposes a waterproof electric actuator, which completes the sealing at the handle by setting an O-ring.

[0004] However, the electric actuator sealed with an O-ring still has certain problems: when the O-ring or other waterproof measures fail, the staff cannot technically observe that the waterproof function of the electric actuator has failed. Only after the electric actuator with the failed waterproof function is damaged after being exposed to a high humidity environment for a long time, the staff may discover the damage of the electric actuator due to the waterproof failure. Failure to promptly discover and replace the damaged waterproof electric actuator may result in the inability to open and close the valve in a short period of time in an emergency, thereby increasing the risk of accidents. Utility Model Content

[0005] The utility model aims at the problems in the prior art and provides a waterproof electric actuator which can provide real-time feedback on the waterproof function, thereby solving the problem in the prior art that the staff cannot technically observe that the waterproof function of the electric actuator has failed, resulting in the inability to complete the opening and closing of the valve in a short time in an emergency.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A waterproof electric actuator includes an upper shell and a lower shell, the upper shell and the lower shell are bolted together, and also includes a driving mechanism, the driving mechanism is arranged on the lower shell, the driving mechanism includes an opening display, an opening display window is provided on the upper shell, the opening display window is used to observe the opening display from the outside, and the opening display is sprayed with a moisture-sensitive color-changing paint. Through the opening display provided in the actuator and the moisture-sensitive color-changing paint on the opening display, after the waterproof measures of the electric actuator fail, the humidity in the electric actuator increases, and the color of the moisture-sensitive color-changing paint changes accordingly, which is used to warn the staff that the waterproof measures of the electric actuator here have failed, so that the staff can promptly find and replace the damaged waterproof electric actuator, thereby reducing the risk of accidents.

[0008] Preferably, a waterproof gasket is provided between the upper shell and the lower shell, and the waterproof gasket is made of elastic material. The elastic gasket can increase the sealing between the upper shell and the lower shell, thereby improving the sealing performance of the waterproof electric actuator.

[0009] Preferably, an adjustment hole is provided on the upper shell, and the drive mechanism further comprises a manual adjustment rod, one end of which is sleeved in the adjustment hole. Through the provided adjustment hole and the manual adjustment rod, temporary manual adjustment can be performed when power is off or the drive mechanism is damaged.

[0010] Preferably, a first waterproof ring is sleeved on the manual adjustment rod, and the first waterproof ring is used to fill the gap between the manual adjustment rod and the adjustment hole. The first waterproof ring can increase the sealing between the upper shell and the manual adjustment rod, thereby improving the sealing of the waterproof electric actuator.

[0011] Preferably, the lower housing is also provided with a driving hole, and the driving mechanism further includes a coupling, and the coupling can be connected to an external actuated mechanism through the driving hole. The coupling and the driving hole can facilitate the installation of the electric actuator on the actuated device.

[0012] Preferably, the lower housing is further provided with a mounting hole and a waterproof groove, and a second waterproof ring is provided in the waterproof groove. The second waterproof ring can increase the sealing between the lower housing and the executed device, thereby improving the sealing performance of the waterproof electric actuator.

[0013] Preferably, the driving mechanism includes a driving motor and a reduction gear set, the two ends of the reduction gear set are respectively a high speed end and a low speed end, the output shaft of the driving motor is connected to the high speed end of the reduction gear set, and the low speed end of the reduction gear set is connected to the opening display. By setting the driving motor and the reduction gear set, it can be ensured that the driving motor with limited power set in the limited actuator space can provide a large torque, thereby completing the normal operation of the actuator.

[0014] Preferably, the manual adjustment rod is connected to the high-speed end of the reduction gear set. When the electric part of the actuator fails, the valve can be opened and closed without much effort through the manual adjustment rod.

[0015] Preferably, the low-speed end of the reduction gear set is further provided with a feedback rod, which is fixedly arranged at the non-rotating shaft of the gear at the low-speed end of the reduction gear set, and the electric actuator further comprises two micro switches, and the feedback rod can trigger the micro switches. By setting the feedback rod and the micro switch, when the feedback rod triggers the micro switch, the micro switch provides a fully open or closed signal to the drive motor, so that the drive motor stops running.

[0016] It can be seen from the above technical solutions that the advantages of the utility model are as follows: through the opening display and the humidity-sensitive color-changing paint on the opening display provided in the actuator, after the waterproof measures of the electric actuator fail, the humidity in the electric actuator increases, and the color of the humidity-sensitive color-changing paint changes accordingly, which is used to warn the staff that the waterproof measures of the electric actuator here fail, so that the staff can timely find and replace the damaged waterproof electric actuator, thereby reducing the risk of accidents. Through the provided elastic gasket, the sealing between the upper shell and the lower shell can be increased, and the sealing of the waterproof electric actuator can be improved. Through the provided adjustment hole and the manual adjustment rod, temporary manual adjustment can be performed when the power is off or the drive mechanism is damaged. Through the provided first waterproof ring, the sealing between the upper shell and the manual adjustment rod can be increased, and the sealing of the waterproof electric actuator can be improved. Through the provided coupling and the driving hole, the installation of the electric actuator on the executed device can be facilitated. Through the provided second waterproof ring, the sealing between the lower shell and the executed device can be increased, and the sealing of the waterproof electric actuator can be improved. Through the provided drive motor and the reduction gear set, it can be ensured that the limited power drive motor provided in the limited actuator space can provide a large torque, thereby completing the normal operation of the actuator. When the electric part of the actuator fails, the valve can be opened and closed without much effort through the manual adjustment lever. Through the feedback lever and micro switch, when the feedback lever triggers the micro switch, the micro switch provides a fully open or closed signal to the drive motor, causing the drive motor to stop running. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a specific implementation example of the utility model.

[0019] Figure 2 It is a structural explosion diagram of an embodiment of a specific implementation method of the utility model.

[0020] Figure 3 This is a partial structural diagram of a specific implementation example of the utility model. Figure 1 .

[0021] Figure 4 This is a partial structural diagram of a specific implementation example of the utility model. Figure 2 .

[0022] Figure 5 This is a partial structural diagram of a specific implementation example of the utility model. Figure 3 .

[0023] Description of main reference numerals

[0024] In the figure: 1. upper shell; 2. lower shell; 3. driving mechanism; 4. opening display; 5. opening display window; 6. waterproof gasket; 7. adjustment hole; 8. manual adjustment rod; 9. first waterproof ring; 10. driving hole; 11. coupling; 12. mounting hole; 13. waterproof groove; 14. driving motor; 15. reduction gear set; 16. feedback rod; 17. micro switch. DETAILED DESCRIPTION

[0025] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0026] Example:

[0027] like Figure 1-Figure 3As shown, a waterproof electric actuator comprises an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 are bolted together, and also comprises a driving mechanism 3, the driving mechanism 3 is arranged on the lower shell 2, the driving mechanism 3 comprises an opening display 4, an opening display window 5 is provided on the upper shell 1, the opening display window 5 is used to observe the opening display 4 for the outside, the opening display 4 is sprayed with a moisture-sensitive color-changing paint, an adjustment hole 7 is provided on the upper shell 1, the driving mechanism 3 also comprises a manual adjustment rod 8, one end of the manual adjustment rod 8 is sleeved in the adjustment hole 7, the lower shell 2 is also provided with a driving hole 10, the driving mechanism 3 also comprises a coupling 11, the coupling 11 can be connected to the external actuator through the driving hole 10 The actuator is connected to the driving mechanism, and is thus arranged, through the opening display 4 arranged in the actuator and the moisture-sensitive color-changing paint on the opening display 4, after the waterproof measure of the electric actuator fails, the humidity in the electric actuator increases, and the color of the moisture-sensitive color-changing paint changes accordingly, which is used to warn the staff that the waterproof measure of the electric actuator here has failed, so that the staff can promptly find and replace the damaged waterproof electric actuator, thereby reducing the risk of accidents. Through the arranged adjustment hole 7 and the manual adjustment rod 8, temporary manual adjustment can be performed when power is off or the driving mechanism 3 is damaged. Through the arranged coupling 11 and the drive hole 10, the installation of the electric actuator on the executed equipment can be facilitated.

[0028] In this embodiment, a waterproof gasket 6 is arranged between the upper shell 1 and the lower shell 2. The waterproof gasket 6 is made of an elastic material and is a rubber gasket in this embodiment. By so arranging, the elastic gasket can increase the sealing between the upper shell 1 and the lower shell 2, thereby improving the sealing of the waterproof electric actuator.

[0029] In this embodiment, a first waterproof ring 9 is sleeved on the manual adjusting rod 8, and the first waterproof ring 9 is used to fill the gap between the manual adjusting rod 8 and the adjusting hole 7. By setting up the first waterproof ring 9, the sealing between the upper shell 1 and the manual adjusting rod 8 can be increased, thereby improving the sealing of the waterproof electric actuator.

[0030] In this embodiment, the lower shell 2 is also provided with an installation hole 12 and a waterproof groove 13, and a second waterproof ring is arranged in the waterproof groove 13. In this way, the second waterproof ring can increase the sealing between the lower shell 2 and the executed device, thereby improving the sealing of the waterproof electric actuator.

[0031] In this embodiment Figure 4 , Figure 5As shown, the driving mechanism includes a driving motor 14 and a reduction gear set 15, the two ends of the reduction gear set 15 are respectively a high-speed end and a low-speed end, the output shaft of the driving motor 14 is connected to the high-speed end of the reduction gear set 15, and the low-speed end of the reduction gear set 15 is connected to the opening display 4. In this way, through the setting of the driving motor 14 and the reduction gear set 15, it can be ensured that the driving motor 15 with limited power set in the limited actuator space can provide a larger torque, thereby completing the normal operation of the actuator.

[0032] In this embodiment, the manual adjustment rod 8 is connected to the high-speed end of the reduction gear set 15. In this way, when the electric part of the actuator fails, the valve can be opened and closed without any effort through the manual adjustment rod 8.

[0033] In this embodiment, a feedback rod 16 is also provided at the low-speed end of the reduction gear set 15. The feedback rod 16 is fixed at the non-rotating shaft of the gear at the low-speed end of the reduction gear set 15. The electric actuator also includes two micro switches 17. The feedback rod 16 can trigger the micro switch 17. In this way, through the feedback rod 16 and the micro switch 17, when the feedback rod 16 triggers the micro switch 17, the micro switch 17 provides a fully open or closed signal to the drive motor 14, so that the drive motor 14 stops running.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waterproof electric actuator, comprising an upper housing (1) and a lower housing (2), characterized in that: The upper shell (1) and the lower shell (2) are connected by bolts, and further include a driving mechanism (3), the driving mechanism (3) is arranged on the lower shell (2), the driving mechanism (3) includes an opening display (4), an opening display window (5) is provided on the upper shell (1), the opening display window (5) is used for observing the opening display (4) from the outside, and the opening display (4) is sprayed with a moisture-sensitive color-changing paint.

2. The waterproof electric actuator according to claim 1, characterized in that: A waterproof gasket (6) is arranged between the upper shell (1) and the lower shell (2), and the waterproof gasket (6) is made of elastic material.

3. The waterproof electric actuator according to claim 1, characterized in that: An adjustment hole (7) is provided on the upper shell (1), and the driving mechanism (3) further comprises a manual adjustment rod (8), one end of which is sleeved in the adjustment hole (7).

4. The waterproof electric actuator according to claim 3, characterized in that: A first waterproof ring (9) is sleeved on the manual adjustment rod (8), and the first waterproof ring (9) is used to fill the gap between the manual adjustment rod (8) and the adjustment hole (7).

5. The waterproof electric actuator according to claim 1, characterized in that: The lower shell (2) is also provided with a driving hole (10), and the driving mechanism (3) further comprises a coupling (11), and the coupling (11) can be connected to an external actuated mechanism through the driving hole (10).

6. The waterproof electric actuator according to claim 5, characterized in that: The lower shell (2) is also provided with a mounting hole (12) and a waterproof groove (13), and a second waterproof ring is provided in the waterproof groove (13).

7. The waterproof electric actuator according to claim 3, characterized in that: The driving mechanism (3) comprises a driving motor (14) and a reduction gear set (15), the two ends of the reduction gear set (15) are respectively a high-speed end and a low-speed end, the output shaft of the driving motor (14) is connected to the high-speed end of the reduction gear set (15), and the low-speed end of the reduction gear set (15) is connected to the opening display (4).

8. The waterproof electric actuator according to claim 7, characterized in that: The manual adjustment rod (8) is connected to the high-speed end of the reduction gear set (15).

9. The waterproof electric actuator according to claim 7, characterized in that: The low-speed end of the reduction gear set (15) is also provided with a feedback rod (16), which is fixedly arranged at the non-rotating shaft of the gear at the low-speed end of the reduction gear set (15). The electric actuator also includes two micro switches (17), and the feedback rod (16) can trigger the micro switches (17).

Images