A dustproof device for automatic opening and closing of a photoelectric sensor

Abstract

This utility model discloses a dustproof device for automatic opening and closing of a photoelectric sensor, belonging to the field of photoelectric sensor dustproof technology. It solves the problem of untimely or abnormal sensor signal feedback caused by photoelectric sensors in harsh environments with high dust levels, affecting production efficiency. This utility model includes a bottom sealing surface, a sensor body, left and right fixed sealing surfaces, and left and right movable sealing surfaces. The bottom sealing surface is fixedly connected to a mounting base. The left and right fixed sealing surfaces and the bottom sealing surface form an integrated structure, which, together with the left and right movable sealing surfaces, constitutes a hollow hemispherical sealing cavity. A drive mechanism is provided at the upper end of each of the left and right movable sealing surfaces, and a rotating shaft mechanism is provided at the upper and lower ends of the left and right movable sealing surfaces. The hollow hemispherical sealing cavity prevents surface dust from falling in. The drive mechanism, in conjunction with the rotating shaft mechanism, realizes the opening and closing of the movable sealing surfaces during detection. The entire device provides dustproof protection for the photoelectric sensor.

Description

Technical Field

[0001] This utility model relates to the field of dustproof technology for photoelectric sensors, specifically to a dustproof device for automatic opening and closing of photoelectric sensors. Background Technology

[0002] Currently, photoelectric sensors are widely used in various working conditions such as machining, chemical industry, coal mining, and coal storage equipment in power plant tipplers. Since most sensors rely on the principle of infrared or laser diffuse reflection to operate, the cleanliness requirements for their signal transmitting and receiving surfaces are high. In some dusty environments, such as during coal unloading and storage operations in power plant tipplers, coal dust, dirt, and other debris can easily be adsorbed and accumulated on the signal transmitting and receiving surfaces, causing untimely or abnormal sensor signal feedback. This often requires manual cleaning to restore the sensor, which is time-consuming and ineffective, affecting production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a dustproof device for automatic opening and closing of photoelectric sensors, in order to solve the problem in the background art where, under harsh working conditions with high dust levels, coal dust, dust and other debris are easily adsorbed and accumulated on the signal transmitting and receiving surfaces of photoelectric sensors, causing untimely or abnormal sensor signal feedback, affecting the normal use of the sensors and production efficiency.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A dustproof device for automatic opening and closing of a photoelectric sensor includes a sensor body and a bottom sealing surface. The bottom sealing surface is fixedly connected to a mounting base. An arc-shaped left fixed sealing surface and a right fixed sealing surface are respectively provided on the left and right sides of the bottom sealing surface. A left movable sealing surface and a right movable sealing surface adapted to the arc of the left and right fixed sealing surfaces are respectively movably arranged inside the left and right fixed sealing surfaces. The left fixed sealing surface, the right fixed sealing surface and the bottom sealing surface form an integral structure, which together with the left movable sealing surface and the right movable sealing surface constitutes a hollow hemispherical sealing cavity. The sensor body is placed inside the left fixed sealing surface and the right fixed sealing surface.

[0006] Furthermore, a left sealing baffle is provided at the end of the left movable sealing surface, and a right sealing baffle is provided at the end of the right movable sealing surface. The left sealing baffle and the right movable sealing surface are in contact, and the ends of the left sealing baffle and the right sealing baffle are respectively higher than the ends of the left movable sealing surface and the right movable sealing surface.

[0007] Furthermore, a drive mechanism is provided at the upper end of both the left and right movable sealing surfaces, and a rotating shaft mechanism is provided at the upper and lower ends of both the left and right movable sealing surfaces.

[0008] Furthermore, the drive mechanism includes a left movable sealing surface drive half tooth and a right movable sealing surface drive half tooth respectively disposed on the left movable sealing surface and the right movable sealing surface. The left movable sealing surface drive half tooth is connected to a drive shaft, and the drive shaft is connected to a stepper drive motor. The stepper drive motor is rotatably connected through the meshing of the left movable sealing surface drive half tooth and the right movable sealing surface drive half tooth.

[0009] Furthermore, the rotating shaft mechanism includes an upper sealing center shaft and a lower sealing center shaft disposed at the upper and lower ends of the left movable sealing surface. The upper sealing center shaft is provided with an upper shaft mating hole, and the lower sealing center shaft is provided with a lower shaft mating hole. The rotating shaft mechanism also includes an upper movable center shaft and a lower movable center shaft disposed at the upper and lower ends of the right movable sealing surface.

[0010] Furthermore, the bottom sealing surface is made of flexible sealing material and has a fixing hole for connecting and fixing the bottom surface.

[0011] The beneficial effects of this invention are as follows: the fixed sealing surface and the movable sealing surface form a hollow hemispherical sealing cavity. The hemispherical curved surface allows dust to slide down along the direction of gravity, preventing dust accumulation. During detection, the sealing surface baffle controls the movement limit of the fixed sealing surface, ensuring reliable sealing of the hemispherical sealing cavity when not in operation. The drive mechanism, in conjunction with the rotating shaft mechanism, realizes the opening and closing of the movable sealing surface. The stepper drive motor has a forward and reverse drive system; after detection, the stepper drive motor reverses to achieve tight closure of the movable sealing surface. This invention effectively prevents dust from entering or accumulating on the sensor surface, thereby extending its service life, ensuring normal equipment operation, improving work efficiency, and reducing maintenance costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the device structure of this utility model;

[0013] Figure 2 This is a three-dimensional cross-sectional view of the present invention.

[0014] Figure 3 This is a left-side sectional view of the present invention.

[0015] In the diagram: 1. Bottom sealing surface; 2. Fixing hole; 3. Left fixed sealing surface; 4. Right fixed sealing surface; 5. Left movable sealing surface; 6. Left sealing baffle; 7. Right movable sealing surface; 8. Right sealing baffle; 9. Sensor body; 10. Stepper drive motor; 11. Drive shaft; 12. Left movable sealing surface drive half tooth; 13. Right movable sealing surface drive half tooth; 14. Upper shaft mating hole; 15. Upper sealing center shaft; 16. Upper movable center shaft; 17. Lower shaft mating hole; 18. Lower sealing center shaft; 19. Lower movable center shaft; 20. Fixed bottom surface. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] like Figure 1-3 As shown, a dustproof device for automatic opening and closing of a photoelectric sensor includes a sensor body 9 and a bottom sealing surface 1. The bottom sealing surface 1 is fixedly connected to a mounting and fixing bottom surface 20. An arc-shaped left fixed sealing surface 3 and a right fixed sealing surface 4 are respectively provided on the left and right sides of the bottom sealing surface 1. A left movable sealing surface 5 and a right movable sealing surface 7 adapted to the arc of the left fixed sealing surface 3 and the right fixed sealing surface 4 are respectively movably provided on the inner side of the left fixed sealing surface 3 and the right fixed sealing surface 4. The left fixed sealing surface 3, the right fixed sealing surface 4 and the bottom sealing surface 1 form an integral structure, which together with the left movable sealing surface 5 and the right movable sealing surface 7 constitutes a hollow hemispherical sealing cavity. The sensor body 9 is placed inside the left fixed sealing surface 3 and the right fixed sealing surface 4.

[0018] Specifically, a left sealing baffle 6 is provided at the end of the left movable sealing surface 5, and a right sealing baffle 8 is provided at the end of the right movable sealing surface 7. The left sealing baffle 6 and the right movable sealing surface 7 are in contact, and the ends of the left sealing baffle 6 and the right sealing baffle 8 are respectively higher than the ends of the left movable sealing surface 5 and the right movable sealing surface 7.

[0019] Specifically, a drive mechanism is provided at the upper end of both the left movable sealing surface 5 and the right movable sealing surface 7, and a rotating shaft mechanism is provided at the upper and lower ends of both the left movable sealing surface 5 and the right movable sealing surface 7.

[0020] Specifically, the drive mechanism includes a left movable sealing surface drive half tooth 12 and a right movable sealing surface drive half tooth 13 respectively disposed on the left movable sealing surface 5 and the right movable sealing surface 7. The left movable sealing surface drive half tooth 12 is connected to a drive shaft 11, and the drive shaft 11 is connected to a stepper drive motor 10. The stepper drive motor 10 is rotatably connected by the left movable sealing surface drive half tooth 12 and the right movable sealing surface drive half tooth 13 meshing.

[0021] Specifically, the rotating shaft mechanism includes an upper sealing center shaft 15 and a lower sealing center shaft 18 disposed at the upper and lower ends of the left movable sealing surface 5. The upper sealing center shaft 15 is provided with an upper shaft mating hole 14, and the lower sealing center shaft 18 is provided with a lower shaft mating hole 17. The rotating shaft mechanism also includes an upper movable center shaft 16 and a lower movable center shaft 19 disposed at the upper and lower ends of the right movable sealing surface 7.

[0022] Specifically, the bottom sealing surface 1 is made of a flexible sealing material, specifically rubber, and the bottom sealing surface 1 has a fixing hole 2 for connecting and fixing the bottom surface 20.

[0023] In practical applications, the device is initially in a fully closed state. The left sealing baffle 6 and the right sealing baffle 8 tightly press against the left movable sealing surface 5 and the right movable sealing surface 7. The sensor body 9 is placed between the left fixed sealing surface 3 and the right fixed sealing surface 4, and is completely enclosed in the hollow hemispherical sealing cavity to isolate dust. When a signal needs to be detected, the stepper drive motor 10 drives the left movable sealing surface drive half tooth 12 to rotate through the drive shaft 11. At the same time, the right movable sealing surface drive half tooth 13, which meshes with it, also begins to rotate. The left movable sealing surface 5 and the right movable sealing surface 7 simultaneously expand outward around the central axis until the left sealing baffle 6 and the right sealing baffle 8 respectively contact the left fixed sealing surface and the right fixed sealing surface 4 and stop at the limit. After the detection is completed, the stepper drive motor 10 reverses, and the left movable sealing surface 5 and the right movable sealing surface 7 tightly close, returning to the initial closed state.

Claims

1. A dustproof device for automatic opening and closing of a photoelectric sensor, comprising a sensor body (9), characterized in that, It also includes a bottom sealing surface (1), which is fixedly connected to a mounting and fixing bottom surface (20). The bottom sealing surface (1) is provided with an arc-shaped left fixed sealing surface (3) and a right fixed sealing surface (4) on its left and right sides respectively. The left fixed sealing surface (3) and the right fixed sealing surface (4) are respectively movably provided with a left movable sealing surface (5) and a right movable sealing surface (7) that are adapted to their curvature on their inner sides. The left fixed sealing surface (3), the right fixed sealing surface (4) and the bottom sealing surface (1) form an integrated structure, which together with the left movable sealing surface (5) and the right movable sealing surface (7) constitute a hollow hemispherical sealing cavity. The sensor body (9) is placed inside the left fixed sealing surface (3) and the right fixed sealing surface (4).

2. The dustproof device for automatic opening and closing of a photoelectric sensor according to claim 1, characterized in that, A left sealing baffle (6) is provided at the end of the left movable sealing surface (5), and a right sealing baffle (8) is provided at the end of the right movable sealing surface (7). The left sealing baffle (6) and the right movable sealing surface (7) are in contact with each other, and the ends of the left sealing baffle (6) and the right sealing baffle (8) are higher than the ends of the left movable sealing surface (5) and the right movable sealing surface (7), respectively.

3. A dustproof device for automatic opening and closing of a photoelectric sensor according to claim 1, characterized in that, The upper ends of the left movable sealing surface (5) and the right movable sealing surface (7) are both provided with driving mechanisms, and the upper and lower ends of the left movable sealing surface (5) and the right movable sealing surface (7) are provided with rotating shaft mechanisms.

4. A dustproof device for automatic opening and closing of a photoelectric sensor according to claim 3, characterized in that, The drive mechanism includes a left movable sealing surface drive half tooth (12) and a right movable sealing surface drive half tooth (13) respectively disposed on the left movable sealing surface (5) and the right movable sealing surface (7). The left movable sealing surface drive half tooth (12) is connected to a drive shaft (11), and the drive shaft (11) is connected to a stepper drive motor (10). The stepper drive motor (10) is rotatably connected to the left movable sealing surface drive half tooth (12) and the right movable sealing surface drive half tooth (13) through meshing.

5. A dustproof device for automatic opening and closing of a photoelectric sensor according to claim 3, characterized in that, The rotating shaft mechanism includes an upper sealing center shaft (15) and a lower sealing center shaft (18) provided at the upper and lower ends of the left movable sealing surface (5). The upper sealing center shaft (15) is provided with an upper shaft mating hole (14), and the lower sealing center shaft (18) is provided with a lower shaft mating hole (17). The rotating shaft mechanism also includes an upper movable center shaft (16) and a lower movable center shaft (19) provided at the upper and lower ends of the right movable sealing surface (7).

6. A dustproof device for automatic opening and closing of a photoelectric sensor according to claim 1, characterized in that, The bottom sealing surface (1) is made of flexible sealing material and has a fixing hole (2) for connecting and fixing the bottom surface (20).

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