Anti-pollution isolation cover for ray sensor and optical sensor

Abstract

The invention provides an anti-pollution isolation cover for a ray sensor and an optical sensor, and belongs to the technical field of sensor protection. The anti-pollution isolation hood for the ray sensor and the optical sensor comprises a hood body, an energy storage cavity and a backflow cavity are formed in the left side and the right side, corresponding to a ray outlet, of the hood body respectively, and an air spraying hole and a backflow air inlet hole are formed in the opposite sides of the energy storage cavity and the backflow cavity respectively. The bottom of a hole cavity of the backflow air inlet hole is provided with a spoiler, the outer side end of the spoiler extends into the backflow cavity in an upward inclined mode, the cover body is provided with a backflow channel enabling the energy storage cavity to communicate with the backflow cavity, and an air filtering assembly is arranged in the backflow channel. The air curtain is arranged at the ray outlet of the cover body to separate the sensor and the core part of the sensor from the external environment, so that the anti-pollution effect is achieved, the service life of the sensor is prolonged, and the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor protection, and in particular to an anti-pollution isolation cover for a ray sensor and an optical sensor. Background Art

[0002] Radiation sensors (such as X-ray and gamma-ray sensors) are widely used in various industrial and scientific fields, such as medical imaging, material testing, environmental monitoring, etc. However, in practical applications, such sensors often face pollution problems, such as dust, chemicals or other environmental factors, which can lead to sensor performance degradation, inaccurate data and even equipment damage. In industrial environments, radiation sensors are often exposed to pollutants such as dust, oil or corrosive gases, which will deposit on the sensor surface, affecting the sensor's detection accuracy and sensitivity. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an anti-pollution isolation cover for a radiation sensor and an optical sensor.

[0004] The technical solution of the present invention is achieved in this way: A pollution-proof isolation cover for a radiation sensor and an optical sensor comprises a cover body, wherein an energy storage chamber and a reflux chamber are respectively arranged on the left and right sides of the cover body corresponding to a radiation outlet, and an air injection hole and a return air inlet hole are respectively arranged on the opposite sides of the energy storage chamber and the return air inlet hole, a spoiler whose outer end extends upwardly and obliquely into the return air inlet hole is arranged at the bottom of the hole cavity of the return air inlet hole, a reflux channel connecting the energy storage chamber with the reflux chamber is arranged on the cover body, and an air filter assembly is arranged in the reflux channel.

[0005] Furthermore, the reflux channel is arranged on the front and rear sides of the cover body, and a buffer chamber is arranged at the bottom of the energy storage chamber. The front and rear sides of the buffer chamber facing one side of the reflux chamber are respectively connected with the two reflux channels, and the bottom of the energy storage chamber is connected with the buffer chamber through a ventilation hole on the side away from the air outlet.

[0006] Furthermore, the height of the bottom end of the cavity of the air jet hole is the same as the height of the bottom end of the upper surface of the spoiler.

[0007] Furthermore, an air inlet guide plate is provided inside the return air inlet hole, and the return air inlet hole is located between the air inlet guide plate and the spoiler. The air inlet guide plate includes a first part, a second part and a third part from the inside to the outside, the first part is parallel to the spoiler, the second part is in a horizontal state, and the outer end of the third part is inclined downward and extends into the return air chamber.

[0008] Furthermore, a supplementary air inlet hole is opened at the top of the outer side surface of the reflux chamber, the inner end of the first part is rotatably installed in the reflux air inlet hole, and when the second part is overlapped on the outer end of the spoiler, the supplementary air inlet hole is connected with the reflux chamber, and when the second part is in a horizontal state, the third part blocks the supplementary air inlet hole by fitting against the outer inner wall surface of the reflux chamber.

[0009] Furthermore, the air filter assembly includes a first filter structure and a second filter structure, the first filter structure includes a first frame and a plurality of first filter elements equidistantly arranged at the bottom of the first frame, the second filter structure includes a second frame and a plurality of second filter elements equidistantly arranged at the top of the second frame, the first filter elements and the second filter elements are staggered in the reflux channel, and the bottom end height of the first filter element is the same as the upper surface height of the second frame, the top end height of the second filter element is the same as the lower surface height of the first frame, and adjacent first filter elements and second filter elements are spaced apart.

[0010] Furthermore, the first frame is slidably installed in the cover body in the height direction, a spring is connected to the top of the first frame, the top of the spring is connected to the cover body, a pressure plate is fixedly installed on the inner end of the first part, and when the air inlet guide plate rotates outward, the inner end of the pressure plate presses down the first filtering structure, and the spring is stretched.

[0011] Furthermore, a fitting groove is provided on the inner wall surface of the outward side of the reflux chamber, and when the outer edge of the third part contacts the notch edge of the fitting groove, the pressure plate contacts the top of the first frame, and when the pressure plate presses down the first frame, the bottom end of the third part makes a circular motion outward in the fitting groove.

[0012] Furthermore, an air supply wheel is rotatably installed in the energy storage chamber, and the air supply wheel covers the energy storage chamber in the front-rear direction.

[0013] Furthermore, the outer end of the return channel cavity is located within the range of the return cavity in the left-right direction, and an air supply impeller is installed in the outer end of the return channel cavity.

[0014] The present invention has the following beneficial effects: 1. By forming an air curtain as an air barrier at the ray outlet of the cover, the sensor is effectively separated from the external environment, the surface of the sensor is protected, and pollutants are prevented from being deposited on the surface of the sensor and the key parts of the sensor, thereby ensuring the accuracy of the measurement and making the equipment run stably for a long time. At the same time, the air curtain can reduce or avoid the interference of pollutants on the sensor, thereby maintaining high-precision measurement results, especially avoiding corrosive substances that accelerate the aging or damage of sensor materials, resulting in a shortened equipment life, extending its service life, and reducing the frequency of replacement and maintenance. In addition, the frequent cleaning and maintenance required for sensors due to contamination problems can be reduced, reducing maintenance costs and time. At the same time, it also reduces the impact of downtime maintenance on production or research work.

[0015] 2. By filtering and purifying the airflow in the air curtain and recycling the filtered and purified airflow that forms the air curtain, not only can the pollutants carried by the air curtain itself be reduced, but also, during the operation of the sensor, the airflow in the air curtain will be filtered and purified repeatedly by the air filter component, which not only improves the cleanliness of the air curtain and better protects the sensor, but also, compared with conventional filtering methods, the air filter component needs to filter the air with a continuously decreasing pollutant content after repeated filtration, which can greatly reduce the workload of the air filter component, increase its service life, and reduce its replacement and maintenance costs.

[0016] 3. By setting the first filter structure in the air filter assembly close to or away from the second filter structure, the air flow of the air curtain can be automatically increased or decreased. At the same time, when the air flow circulating in the air curtain is insufficient, the air flow can be automatically supplemented from the external environment. On the premise of ensuring the circulation of the air flow in the air curtain and improving the cleanliness of the air flow, the stability of the air curtain is guaranteed, and the sensor has better anti-pollution protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 The present invention Figure 2 Enlarged view of part A in the middle; Figure 4 The present invention Figure 2 Enlarged view of middle part B; Figure 5 is a partial cross-sectional view of the present invention; Figure 6 The present invention Figure 5 A front view of Figure 7The figures are schematic diagrams of the states of the air inlet guide plate of the present invention before and after operation, wherein (a) is a schematic diagram of the initial state; (b) is a schematic diagram of the state in which the air inlet hole is supplementarily blocked, the pressure plate is in contact with the top of the first filter frame, and the auxiliary channel is opened to the maximum state; (c) is a schematic diagram of the state in which the first filter structure is pressed down and the auxiliary channel is closed.

[0018] In the figure: 1. cover body; 2. ray outlet; 3. energy storage chamber; 4. reflux chamber; 5. air jet hole; 6. reflux air inlet hole; 7. spoiler; 8. reflux channel; 9. buffer chamber; 10. ventilation hole; 11. air inlet guide plate; 11.1. first part; 11.2. second part; 11.3. third part; 12. supplementary air inlet hole; 13. first filter structure; 13.1. first frame; 13.2. first filter element; 14. second filter structure; 14.1. second frame; 14.2. second filter element; 15. spring; 16. pressure plate; 17. fitting groove; 18. air supply wheel; 19. air delivery wheel; 20. auxiliary channel. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, a typical embodiment of the present invention provides an anti-pollution isolation cover for a radiation sensor and an optical sensor, comprising a cover body 1, an energy storage chamber 3, a reflux chamber 4, an air jet hole 5, a reflux air inlet hole 6, a spoiler 7, a reflux channel 8 and an air filter assembly.

[0021] A ray outlet 2 is provided in the middle of the cover body 1, and an energy storage chamber 3 and a reflux chamber 4 are provided on the left and right sides of the cover body 1 corresponding to the ray outlet 2, respectively. An air jet hole 5 and a reflux air inlet hole 6 are provided on the opposite sides of the energy storage chamber 3 and the reflux chamber 4, respectively. The air jet hole 5 and the reflux air inlet hole 6 cover the ray outlet 2. After the air in the energy storage chamber 3 is ejected from the air jet hole 5, an air curtain is formed in front of the ray outlet 2 to prevent dust and oil stains from contaminating the ray outlet 2. After passing through the ray outlet 2, the air curtain enters the reflux chamber 4 from the reflux air inlet hole 6.

[0022] The bottom of the cavity of the return air inlet hole 6 is provided with a spoiler 7 whose outer end extends upward and tilts into the return air cavity 4. After the air curtain passes over the ray outlet 2, it is guided by the spoiler 7, and the spoiler 7 makes the airflow in the air curtain move away from the ray outlet 2 and enter the return air inlet hole 6, thereby making the airflow in the air curtain enter the return air cavity 4.

[0023] The housing 1 is provided with a reflux channel 8 for connecting the energy storage chamber 3 with the reflux chamber 4, and an air filter assembly is provided in the reflux channel 8. After the air in the air curtain that has passed the ray outlet 2 enters the reflux chamber 4, it returns to the energy storage chamber 3 through the reflux channel 8. At the same time, the air that returns to the energy storage chamber 3 is filtered in the process of passing through the air filter assembly, so that the air curtain finally ejected from the air ejection hole 5 is cleaner, so as to prevent the impurities or oil stains carried in the air curtain from contaminating the ray outlet 2.

[0024] In this embodiment, the air used as the air curtain can be recycled and reused by utilizing the backflow effect, and in each cycle, it will be purified by passing through the air filter assembly. On the one hand, the cleanliness of the air in the air curtain is improved, and the anti-pollution effect of the ray outlet 2 is improved. On the other hand, by recycling the air in the air curtain, the cleanliness of the filtered air will be continuously improved, thereby reducing the workload of the air filter assembly, increasing its service life, and reducing the maintenance and replacement frequency. In particular, in the prior art, air is directly drawn in from the external environment for filtration. Since the air drawn in each time is unfiltered air from the external environment, the workload of the air filter assembly will increase, and the dust, oil stains and impurities in the external air are relatively large, making the air filter assembly very easy to clog, thereby reducing its service life and increasing the maintenance and replacement frequency. For this, the effect of this embodiment is extremely prominent.

[0025] On this basis, in this embodiment, the reflux channel 8 is arranged on the front and rear sides of the cover body 1, and a buffer chamber 9 is arranged at the bottom of the energy storage chamber 3. The front and rear sides of the buffer chamber 9 facing one side of the reflux chamber 4 are respectively connected with the two reflux channels 8, and the bottom of the energy storage chamber 3 is connected to the buffer chamber 9 through the ventilation hole 10 on the side away from the air outlet 5.

[0026] The bottom height of the cavity of the air jet hole 5 is the same as the bottom height of the upper surface of the spoiler 7. After passing through the ray outlet 2, the air curtain can be more thoroughly guided by the spoiler 7 and away from the ray outlet 2 to prevent interference with the air curtain in front of the ray outlet 2.

[0027] An air inlet guide plate 11 is provided inside the return air inlet hole 6, and the return air inlet hole 6 is located between the air inlet guide plate 11 and the spoiler 7. Specifically, the air inlet guide plate 11 includes a first part 11.1, a second part 11.2 and a third part 11.3 from the inside to the outside. The first part 11.1 is parallel to the spoiler 7, the second part 11.2 is horizontal, and the outer end of the third part 11.3 is tilted downward and extends to the return chamber 4.

[0028] In this embodiment, the angle between the first part 11.1 and the second part 11.2 and the angle between the second part 11.2 and the third part 11.3 are both obtuse angles, and there are arc-shaped transition areas between the first part 11.1 and the second part 11.2 and between the second part 11.2 and the third part 11.3.

[0029] The air curtain entering the return air inlet hole 6 is guided by the first part 11.1 and the spoiler 7, and the air curtain is directly blown to the second part 11.2. Then, the airflow in the air curtain is guided by the second part 11.2 and enters the return chamber 4 along the second part 11.2 and the third part 11.3. In this way, the airflow in the air curtain leaving the ray outlet 2 can enter the return chamber 4 more efficiently and smoothly by utilizing the guiding effect of the air inlet guide plate 11 on the airflow.

[0030] On this basis, a supplementary air inlet hole 12 is opened at the top of the outer side of the reflux chamber 4. When the supplementary air inlet hole 12 is in an open state, the air in the external environment will enter the reflux chamber 4 through the supplementary air inlet hole 12 to make up for the air flow in the reflux chamber 4 and ensure sufficient airflow to form an air curtain.

[0031] The inner end of the first part 11.1 is rotatably mounted in the return air inlet hole, and when the second part 11.2 is overlapped on the outer end of the spoiler 7, the supplementary air inlet hole 12 is connected with the return chamber 4. This state is the state before the machine is turned on. After the machine is turned on, the outside air enters the return chamber 4 through the supplementary air inlet hole 12, then enters the energy storage chamber 3 through the return channel 8, and finally sprays out from the air spray hole 5 to form an air curtain.

[0032] When the second part 11.2 is in a horizontal state, the third part 11.3 blocks the supplementary air inlet 12 by fitting against the inner wall of the outward side of the return chamber 4. When the air curtain enters the return air inlet 6 after passing through the ray outlet 2, the airflow of the air curtain blows the air inlet guide plate 11 to rotate upward, so that the return air inlet 6 is connected with the return chamber 4, and then the airflow enters the return chamber 4. After the air inlet guide plate 11 rotates upward, the bottom end of the third part 11.3 blocks the supplementary air inlet 12, so that the circulating airflow is mainly the airflow in the air curtain.

[0033] The air filter assembly includes a first filter structure 13 and a second filter structure 14. The first filter structure 13 includes a first frame 13.1 and a plurality of first filter elements 13.2 equidistantly arranged at the bottom of the first frame 13.1. In this embodiment, four first filter elements 13.2 are provided. The second filter structure 14 includes a second frame 14.1 and a plurality of second filter elements 14.2 equidistantly arranged at the top of the second frame 14.1. In this embodiment, three second filter elements 14.2 are provided.

[0034] Specifically, four first filter elements 13.2 and three second filter elements 14.2 are staggeredly distributed in the reflux channel 8, and the airflow passing through the reflux channel 8 will alternately pass through the first filter elements 13.2 and the second filter elements 14.2 in sequence to be repeatedly filtered and purified.

[0035] The bottom end height of the first filter element 13.2 is the same as the upper surface height of the second frame 14.1, and the top end height of the second filter element 14.2 is the same as the lower surface height of the first frame 13.1, and the adjacent first filter elements 13.2 and second filter elements 14.2 are spaced apart. Specifically, the first frame 13.1 includes a first transverse portion and four first longitudinal portions, and the four first filter elements 13.2 are respectively inserted into the four first longitudinal portions. The second frame 14.1 includes a second transverse portion and three second longitudinal portions, and the three second filter elements 14.2 are respectively inserted into the three second longitudinal portions. The bottom end of the first filter element 13.2 contacts the upper surface of the second transverse portion, and the top end of the second filter element 14.2 contacts the lower surface of the first transverse portion. At this time, the airflow in the reflux channel 8 will pass through the first filter element 13.2 and the second filter element 14.2 in sequence, and will be forced to be fully filtered and purified.

[0036] The first frame 13.1 is slidably installed in the housing 1 in the height direction, and a spring 15 is connected to the top of the first frame 13.1, and the top of the spring 15 is connected to the housing 1. In the initial state, the spring 15 suspends the first filter structure 13 as a whole, so that the first filter structure 13 as a whole is located at the highest position in the reflux channel 8. At this time, the first filter element 13.2 and the second transverse portion are spaced apart, and the second filter element 14.2 and the first transverse portion are spaced apart, so that a serpentine auxiliary channel 20 for air circulation is formed in the reflux channel 8 between the first filter structure 13 and the second filter structure 14.

[0037] A pressing plate 16 is fixedly mounted on the inner end of the first portion 11.1. When the air inlet guide plate 11 rotates outward, the inner end of the pressing plate 16 presses down the first filtering structure 13, and the spring 15 is stretched.

[0038] In this embodiment, in the initial state, the inner end of the pressing plate 16 is separated from the first filtering structure 13, and the pressing plate 16 is located above the first transverse portion. At this time, the auxiliary channel 20 is open, and then, after the machine is turned on, the airflow from the reflux chamber 4 into the reflux channel 8 is controlled by the auxiliary channel 20, so that a sufficient amount of airflow enters the energy storage chamber 3 to form an air curtain.

[0039] When the air curtain pushes the air inlet guide plate 11 to rotate, the pressure plate 16 presses down the first filtering structure 13 as it rotates following the air inlet guide plate 11, so that the auxiliary channel 20 is reduced or closed. Furthermore, after the air curtain is stable, by reducing or closing the auxiliary channel 20, it is ensured that the airflow passing through the return channel 8 can be thoroughly and effectively filtered and purified, thereby improving the anti-pollution effect of the radiation outlet 2.

[0040] In addition, during the subsequent operation, when the air flow in the air curtain decreases, its thrust on the inlet guide plate is reduced, the elastic force of the spring 15 causes the inlet guide plate 11 to swing downward, and the first filter structure 13 moves upward, so that the auxiliary channel 20 is enlarged or opened, so as to improve the efficiency of the air flow through the return channel 8, and then adaptively supplement the air flow to the air curtain to ensure the stability of the air curtain and the anti-pollution effect of the radiation outlet 2.

[0041] On this basis, a fitting groove 17 is provided on the inner wall surface of the outward side of the reflux chamber 4. When the edge of the outer bottom of the third part 11.3 contacts the edge of the notch of the fitting groove 17, the supplementary air inlet 12 is in a closed state, and the pressure plate 16 contacts the top of the first frame 13.1, while the spring 15 is in a natural state.

[0042] When the pressing plate 16 presses down the first frame 13.1, the bottom end of the third part 11.3 moves outward in a circular motion in the fitting groove 17, and during this process, the supplementary air inlet hole 12 remains in a blocked state.

[0043] After making the above settings of this embodiment: When there is enough airflow in the air curtain, the air inlet guide plate 11 will rotate upward to the highest position when passing through the return air inlet hole 6. At this time, the third part 11.3 is located on the outside of the fitting groove 17, the supplementary air inlet hole 12 is blocked, and the auxiliary channel 20 is closed.

[0044] When the air flow in the air curtain decreases, the auxiliary channel 20 will be opened before the supplementary air inlet hole 12 during the downward rotation of the air inlet guide plate 11. At this time, the air flow velocity and flow rate through the return channel 8 will increase.

[0045] In case 1, if the air flow of the air curtain is restored, the supplementary air inlet 12 does not need to be opened, and the air curtain can be restored to a stable state by opening and adding the auxiliary channel 20 while keeping the supplementary air inlet 12 blocked. This setting does not require the supplementary air from the outside environment, thereby preventing dust, impurities or oil stains in the outside air from entering the air curtain.

[0046] Case 2: If the airflow of the air curtain is not restored, the air inlet guide plate 11 continues to swing downward, and the supplementary air inlet hole 12 is opened, so that the outside air enters the return chamber 4 to supplement the airflow, so that the air curtain is restored.

[0047] The outer end of the cavity of the return channel 8 is located within the range of the return chamber 4 in the left-right direction, and an air supply fan wheel 19 is installed in the outer end of the cavity of the return channel 8. When the air supply fan wheel 19 rotates, it can draw the airflow in the return chamber 4 into the return channel 8 and push it into the return channel 8, so that the airflow in the return channel 8 has greater kinetic energy to pass through the air filter assembly.

[0048] In one embodiment, an air supply wheel 18 is rotatably installed in the energy storage chamber 3, and the air supply wheel 18 covers the energy storage chamber 3 in the front-to-back direction. When the air supply wheel 18 rotates, the air in the energy storage chamber 3 is ejected from the air ejection hole 5 to form an air curtain. It should be noted that the air supply wheel 18 and the air supply wheel 19 are both externally connected to a motor, and the motor is used to drive the air supply wheel 18 and the air supply wheel 19 to rotate.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-pollution isolation cover for a radiation sensor and an optical sensor, characterized in that: The invention comprises a cover body (1), wherein an energy storage chamber (3) and a return chamber (4) are respectively arranged on the left and right sides of the cover body (1) corresponding to the ray outlet (2), and an air injection hole (5) and a return air inlet hole (6) are respectively arranged on the opposite sides of the energy storage chamber (3) and the return air inlet hole (4), and a spoiler (7) is arranged at the bottom of the hole of the return air inlet hole (6), the outer end of which extends upwardly and obliquely into the return air chamber (4), and a return channel (8) is arranged on the cover body (1) for connecting the energy storage chamber (3) with the return chamber (4), and an air filter assembly is arranged in the return channel (8).

2. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 1, characterized in that: The reflux channel (8) is arranged on the front and rear sides of the cover body (1); a buffer chamber (9) is arranged at the bottom of the energy storage chamber (3); the front and rear sides of the buffer chamber (9) facing one side of the reflux chamber (4) are respectively connected to the two reflux channels (8); and the bottom of the energy storage chamber (3) away from the air injection hole (5) is connected to the buffer chamber (9) through a ventilation hole (10).

3. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 1, characterized in that: The height of the bottom end of the cavity of the air jet hole (5) is the same as the height of the bottom end of the upper surface of the spoiler (7).

4. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 1, characterized in that: An air inlet guide plate (11) is arranged inside the return air inlet hole (6); the return air inlet hole (6) is located between the air inlet guide plate (11) and the spoiler plate (7); the air inlet guide plate (11) comprises, from the inside to the outside, a first part (11.1), a second part (11.2) and a third part (11.3); the first part (11.1) is parallel to the spoiler plate (7); the second part (11.2) is in a horizontal state; and the outer end of the third part (11.3) is tilted downward and extends into the return air chamber (4).

5. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 4, characterized in that: A supplementary air inlet hole (12) is provided at the top of the outer side surface of the reflux chamber (4); the inner side end of the first part (11.1) is rotatably mounted in the reflux air inlet hole, and when the second part (11.2) overlaps the outer side end of the spoiler (7), the supplementary air inlet hole (12) is connected to the reflux chamber (4); when the second part (11.2) is in a horizontal state, the third part (11.3) blocks the supplementary air inlet hole (12) by adhering to the outer inner wall surface of the reflux chamber (4).

6. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 5, characterized in that: The air filter assembly comprises a first filter structure (13) and a second filter structure (14); the first filter structure (13) comprises a first frame (13.1) and a plurality of first filter elements (13.2) equidistantly arranged at the bottom of the first frame (13.1); the second filter structure (14) comprises a second frame (14.1) and a plurality of second filter elements (14.2) equidistantly arranged at the top of the second frame (14.1); the first filter element (13.2) and the second filter element (14.2) are staggeredly distributed in the reflux channel (8); the bottom end height of the first filter element (13.2) is the same as the top surface height of the second frame (14.1); the top end height of the second filter element (14.2) is the same as the bottom surface height of the first frame (13.1); and adjacent first filter elements (13.2) and second filter elements (14.2) are spaced apart from each other.

7. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 6, characterized in that: The first frame (13.1) is slidably mounted in the cover body (1) in the height direction; a spring (15) is connected to the top of the first frame (13.1); the top end of the spring (15) is connected to the cover body (1); a pressure plate (16) is fixedly mounted on the inner end of the first part (11.1); when the air inlet guide plate (11) rotates outward, the inner end of the pressure plate (16) presses down the first filtering structure (13), and the spring (15) is stretched.

8. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 5, characterized in that: A fitting groove (17) is provided on the inner wall surface of the outward side of the reflux chamber (4); when the outer edge of the third part (11.3) contacts the notch edge of the fitting groove (17), the pressing plate (16) contacts the top of the first frame (13.1); and when the pressing plate (16) presses down the first frame (13.1), the bottom end of the third part (11.3) performs a circular motion outward in the fitting groove (17).

9. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 1, characterized in that: An air supply wheel (18) is rotatably mounted in the energy storage chamber (3), and the air supply wheel (18) covers the energy storage chamber (3) in the front-rear direction.

10. The anti-pollution isolation cover for a radiation sensor and an optical sensor according to claim 1, characterized in that: The outer end of the cavity of the return channel (8) is located within the range of the return chamber (4) in the left-right direction, and an air supply impeller (19) is installed in the outer end of the cavity of the return channel (8).

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