Anti-pollution isolation hood for sensor

Abstract

The utility model provides an anti-pollution isolation cover for a sensor. The anti-pollution isolation cover comprises a housing used for accommodating the sensor, and the housing is provided with a signal input opening; the air curtain system is arranged at the signal input opening, the air curtain system comprises an energy storage cavity and a spoiler, the energy storage cavity and the spoiler are located on the two sides of the signal input opening respectively, the energy storage cavity is provided with an air inlet and an air outlet, the air inlet is connected with a compressed air source, the air outlet is connected with an air outlet, and the air outlet is connected with an air outlet. The exhaust port exhausts airflow to the spoiler, and the airflow forms an air curtain used for protecting the sensor at the signal input opening. Interference of pollutants on the sensor can be avoided or reduced, the service life of the sensor is prolonged, and the precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-pollution; in particular, the utility model relates to an anti-pollution isolation cover for a sensor. Background Art

[0002] Optical sensors are electronic components that use the properties of light to detect objects or measure parameters such as distance, color, and brightness. They have a wide range of applications in various industrial and scientific fields, such as medical imaging, material testing, and environmental monitoring.

[0003] However, in practical applications, optical sensors often face contamination challenges. Dust, chemicals, and other environmental factors can deposit on the sensor surface, scattering, absorbing, or deflecting light, reducing sensor measurement accuracy. In industrial environments, contaminants, particularly corrosive substances, can accelerate aging or damage sensor materials, affecting sensor sensitivity and reliability, leading to decreased sensor performance and shortened device lifespan. Utility Model Content

[0004] In view of this, the present invention provides an anti-pollution isolation cover for a sensor, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides an anti-pollution isolation cover for a sensor, wherein the anti-pollution isolation cover comprises:

[0006] a housing for accommodating the sensor, the housing having a signal input opening; and

[0007] An air curtain system is provided at the signal input opening. The air curtain system includes an energy storage cavity and a spoiler. The energy storage cavity and the spoiler are respectively located on both sides of the signal input opening. The energy storage cavity has an air inlet and an exhaust port. The air inlet is connected to a compressed air source, and the exhaust port discharges airflow toward the spoiler. The airflow forms a wind curtain at the signal input opening for protecting the sensor.

[0008] In the anti-pollution isolation cover as described above, optionally, the energy storage cavity is cylindrical, the exhaust port is an air slit or an exhaust hole extending along the first side surface of the energy storage cavity and facing the spoiler, and the spoiler is provided with an air flow guiding surface on the side facing the exhaust port for guiding the airflow away from the wind curtain, and the length of the air slit or the width of the exhaust hole is greater than the width or diameter of the signal input opening.

[0009] In the aforementioned anti-pollution isolation cover, optionally, the energy storage cavity is in the shape of a square cylinder or a cylinder.

[0010] In the aforementioned anti-pollution isolation cover, optionally, the air inlet is an air slit extending along the second side surface of the energy storage cavity, and the area of the air inlet is larger than the area of the air outlet.

[0011] In the aforementioned anti-pollution isolation cover, optionally, the housing includes a cylindrical portion and a conical portion, the cylindrical portion provides an accommodating space for the sensor, and the conical portion provides a signal channel between the cylindrical portion and the signal input opening.

[0012] In the anti-pollution isolation cover as described above, optionally, the cylindrical part is cylindrical, the signal input opening is square, the conical part has a circular end connected to the cylindrical part and a square end connected to the signal input opening, and the conical part gradually shrinks from the circular end to the square end.

[0013] In the aforementioned anti-pollution isolation cover, optionally, the shell is made of corrosion-resistant material.

[0014] In the aforementioned anti-pollution isolation cover, optionally, the air curtain system has a square mounting seat, the square mounting seat provides the signal input opening, and the energy storage cavity and the spoiler are arranged on the square mounting seat.

[0015] In the aforementioned anti-pollution isolation cover, optionally, the compressed air source is a compressed air tank or a blower, and a valve is installed at the exhaust port to control the flow rate and / or direction of the air flow.

[0016] In the anti-pollution isolation cover as described above, optionally, the sensor is an optical sensor.

[0017] It can be seen from the above technical solutions of the present invention that the present invention proposes an anti-pollution isolation cover for a sensor, which can avoid or reduce the interference of pollutants on the optical sensor by forming an air curtain, thereby maintaining high-precision measurement results and expanding the application range of the optical sensor.

[0018] It can be seen from the optional technical solutions of the present invention that the anti-pollution isolation cover can protect the optical sensor from being corroded by harmful substances and extend its service life.

[0019] It can be seen from the further optional technical solutions of the present invention that the anti-pollution isolation cover can reduce the frequent cleaning and maintenance of the optical sensor due to pollution problems, thereby reducing maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present invention will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of an anti-pollution isolation cover for a sensor of the present invention is shown;

[0022] Figure 2 Shown Figure 1 Another schematic diagram of the three-dimensional structure of the anti-pollution isolation cover for the sensor, which shows the lower structure of the anti-pollution isolation cover;

[0023] Figure 3 Shown Figure 1 A schematic cross-sectional view of an anti-pollution isolation cover for a sensor;

[0024] Figure 4 Shown Figure 3 A schematic diagram of the cross-sectional structure of the energy storage cavity in the anti-pollution isolation cover for the sensor;

[0025] Figure 5 A simulation schematic diagram of forming an air curtain according to an embodiment of the anti-pollution isolation cover for a sensor of the present invention is shown.

[0026] Figure numerals: 1 - housing; 2 - air curtain system; 3 - cylindrical portion; 4 - conical portion; 5 - square mounting seat; 6 - energy storage cavity; 7 - air inlet; 8 - exhaust port; 9 - spoiler; 10 - signal input opening. DETAILED DESCRIPTION

[0027] With reference to the accompanying drawings and specific embodiments, the structure, composition, characteristics and advantages of the anti-pollution isolation cover for sensors of the present invention will be described below in an exemplary manner. However, all descriptions should not be used to form any limitation on the present invention.

[0028] In addition, for any single technical feature described or implied in the embodiments mentioned in this document, or any single technical feature shown or implied in the drawings, the present invention still allows for continued arbitrary combination or deletion between these technical features (or their equivalents) without any technical obstacles, and thus it should be considered that these more embodiments according to the present invention are also within the scope of the description in this document.

[0029] It should also be noted that the terms "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships of the anti-pollution isolation cover shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include at least one of these features.

[0031] Figure 1 The figure shows a three-dimensional structural diagram of an embodiment of the anti-pollution isolation cover for a sensor of the present invention.

[0032] Depend on Figure 1 It can be seen that the anti-pollution isolation cover can include a shell 1 and an air curtain system 2. The shell 1 is used to accommodate a sensor (not shown). The shell 1 provides a signal input opening 10. The air curtain system 2 is used to form an air curtain at the signal input opening 10 to protect the sensor from contamination.

[0033] Specifically, as shown in the figure, the air curtain system 2 has a square mounting seat 5, which provides a signal input opening 10. An energy storage cavity 6 and a spoiler 9 are provided at the square mounting seat 5. The airflow discharged from the energy storage cavity 6 to the spoiler 9 forms the air curtain.

[0034] During use, the sensor can be placed within the housing 1. The housing 1 as a whole provides physical protection for the optical sensor, directly isolating it from a wide range of contaminants. As shown in the figure, in this example, the housing 1 includes a cylindrical portion 3 and a tapered portion 4. More specifically, the cylindrical portion 3 is designed to accommodate the optical sensor, ensuring that the sensor operates in a relatively protected environment. The tapered portion 4 is a square cone and serves as a signal channel.

[0035] exist Figure 1 In the embodiment shown, the housing 1 is designed to be a combination of a cylindrical portion 3 and a conical portion 4. The cylindrical portion 3 can accommodate internal components, and the conical portion 4 can serve as a transition area toward the air curtain system 2, providing a signal channel where an air curtain is formed to ensure the exhaust port 8 (see FIG. Figure 3 ) The exhaust gas can efficiently form the required wind curtain, thereby better achieving the purpose of preventing the sensor from being contaminated. Figure 3 , an exhaust port 8 located on a first side of the energy storage cavity 6 and an air inlet 7 located on a second side of the energy storage cavity 6 are shown.

[0036] As shown in the figure, the conical portion 4 gradually shrinks from the circular end connected to the cylindrical portion 3 to the square end. The square end of the conical portion 4 is seamlessly connected to the square mounting base 5, forming a structure with a top opening. This opening is the signal input opening 10. The conical portion 4 is located between the cylindrical portion 3 and the signal input opening 10 and serves as a signal channel. This design allows the anti-pollution isolation cover to completely cover the optical sensor without affecting the sensor's normal reception of light signals. The opening of the square mounting base 5 adopts a square design that can fit a standardized interface, facilitating quick docking of the signal input opening 10. In actual applications, the shape design of the signal input opening 10 should be based on the device interface to which it is docked.

[0037] Since optical sensors can operate in harsh environments such as mining, chemical industry, and nuclear power plants, the shell 1 of the anti-pollution isolation cover is directly exposed to extreme pollution conditions, so the shell 1 can adopt a corrosion-resistant structure, such as but not limited to organic plastics. Organic plastics have excellent corrosion resistance and can maintain a stable state in harsh conditions such as acid, alkali, and smoke. Compared with traditional inorganic materials, organic plastics are lighter, which simplifies the installation process and reduces the burden of transportation and maintenance. In addition, the surface of organic plastics is smooth and flat, and it is not easy to accumulate dust and impurities, which can further enhance the adaptability of optical sensors in polluted environments. In addition, the good electrical insulation properties of organic plastics enable them to remain stable in industrial sites with dense electronic equipment, which can ensure the reliable operation of optical sensors. Based on the above, it can be seen that choosing organic plastic as the material of the shell 1 of the anti-pollution isolation cover can not only cope with various chemical corrosion threats and ensure the normal operation of the optical sensor, but also expand the application scenarios of the sensor, greatly improving the practical value and economic benefits of the optical sensor.

[0038] exist Figure 1 In the embodiment, the air curtain system 2 has a square mounting base 5. The air curtain system 2 includes an energy storage cavity 6 and a spoiler 9. The middle of the square mounting base 5 is designed to be a signal input opening 10, and the energy storage cavity 6 and the spoiler 9 are respectively located on the left and right sides of the signal input opening 10. The energy storage cavity 6 can store compressed air or other types of gas, and accumulate energy to release it at a certain pressure and speed. When these gases are discharged to the spoiler 9, an air curtain is formed at the signal input opening 10 of the square mounting base 5. This air curtain can just cover the signal input opening 10, establishing a continuous air barrier at the signal input opening 10. Through the continuous flow of air, external pollutants such as dust and smoke are effectively blocked outside and cannot contact the surface of the optical sensor. In this way, even in harsh environments, the anti-pollution isolation cover can ensure that the optical sensor is free from interference from pollutants, thereby maintaining the high accuracy of its measurement results and greatly improving the reliability of the optical sensor.

[0039] In alternative embodiments, the anti-pollution shield may be designed to better suit the actual environment, rather than being limited to the illustrated component shapes. For example, the housing 1 may be cylindrical, such as square or polygonal, or other non-cylindrical shapes; the tapered portion may be circular or multi-faceted; and the mounting base, energy storage cavity, and other shapes may also differ from those illustrated.

[0040] Figure 2 Shown Figure 1 Another three-dimensional structural schematic diagram of the anti-pollution isolation cover for the sensor, which shows the lower structure of the anti-pollution isolation cover.

[0041] from Figure 2 It can be seen more clearly that a long and narrow air slit is provided on the second side surface of the energy storage cavity 6, and this air slit serves as the air inlet 7. The air inlet 7 is used to connect the energy storage cavity 6 and an external compressed air source (not shown). The air inlet 7 can be connected to one side of the energy storage cavity 6 and tangent to its inner wall, so that the airflow can flow along the inner wall of the energy storage cavity, making the airflow direction in the energy storage cavity 6 stable and conducive to forming a uniform wind curtain. In different embodiments, the compressed air source can be a compressed air tank or a high-efficiency fan. The long slit design of the air inlet 7 in this embodiment can evenly intake air along the entire length of the energy storage cavity 6, thereby improving the reliability of the energy storage cavity 6.

[0042] from Figure 2 It can also be seen that the spoiler 9 provides an airflow guiding surface on the side facing the exhaust port 8 of the energy storage cavity 6. This airflow guiding surface is flat and guides the airflow from the edge of the signal input opening at an angle to the outside of the anti-pollution isolation cover away from the air curtain, preventing the airflow from returning to the air curtain and affecting its formation.

[0043] After the gas source is started, gas can be continuously injected into the energy storage cavity 6 through the air inlet 7 to fill the entire energy storage cavity 6, so that the interior of the energy storage cavity 6 is filled with compressed gas, and a pressure difference is generated between the internal air pressure and the atmospheric pressure, thereby completing the energy storage process. The high-pressure gas inside the energy storage cavity 6 is released to the exhaust port 8, forming a wind curtain blowing towards the spoiler 9, thereby forming an effective barrier, which can not only protect the optical sensor from external pollutants, but also quickly blow away the pollutants at the optical sensor signal input opening 10, ensuring that the optical sensor is in a pure working environment, greatly improving its working accuracy and stability.

[0044] Figure 3 Shown Figure 1 Schematic diagram of the cross-sectional structure of the anti-pollution isolation cover for the sensor, Figure 3 The overall structure of the anti-pollution isolation cover of this embodiment is shown in more detail.

[0045] As shown in the figure, the cylindrical portion 3 of the housing 1 connects to the tapered portion 4, creating a smooth transition and ample internal space to accommodate optical sensors of various sizes and shapes. The square end of the tapered portion 4 is hollowed out at the interface with the square mounting base 5, forming a signal input opening 10. This opening 10 is the window through which the optical sensor receives external optical signals. However, due to its design, it is also a structure where external contaminants may accumulate. An air curtain system 2 is installed at this opening.

[0046] from Figure 3 It can be seen that the first side of the energy storage cavity 6 of the wind curtain system 2 is provided with an exhaust port 8. According to actual needs, the exhaust port 8 can be designed as a narrow strip of air slits or neatly arranged exhaust holes. In an optional embodiment, it can be a single air slit / single exhaust hole or multiple air slits / multiple exhaust holes arranged in parallel. The design of the air slits or exhaust holes allows the gas to be dispersed in a more uniform manner to form a wide and dense wind curtain. In addition, the design of the air slits or exhaust hole groups also facilitates the regulation of airflow. If the direction or intensity of the wind curtain needs to be adjusted, it can be achieved by changing the degree of opening and closing of a single air slit or air hole without having to significantly change the layout of the entire exhaust port 8.

[0047] In a specific embodiment, no matter what form the exhaust port 8 is designed to be in, the overall length of the air gap of the exhaust port 8 or the overall width of the row of small air holes can be greater than the width (when the signal input opening 10 is non-circular) or diameter (when the signal input opening 10 is circular) of the signal input opening 10, so that the wind curtain formed by the gas ejected from the exhaust port 8 can completely cover the signal input opening 10 and effectively isolate pollutants.

[0048] Figure 3 The complete air curtain system structure is shown, with an air inlet 7 optionally positioned in the middle of the side of the energy storage cavity. This inlet 7 can be connected to an external compressed air source, which delivers gas into the energy storage cavity 6 through the inlet 7. When the anti-pollution shield is in operation, exhaust holes 8 discharge gas toward spoiler 9, forming an air curtain.

[0049] Combine Figure 3 and Figure 4 , the specific structure of the energy storage cavity 6 can be shown in more detail.

[0050] Figure 4 Shown Figure 3 An enlarged schematic diagram of the cross-sectional structure of the energy storage cavity in the anti-pollution isolation cover used for the sensor.

[0051] like Figure 3 and Figure 4As shown in , the exhaust port 8 is located on the first side of the energy storage space 6 opposite to the spoiler 9 and close to the signal input opening 10, while the air inlet 7 is located in the middle of the second side of the energy storage space 6, and the width of the air inlet 7 is greater than that of the exhaust port 8. Figure 4 The exhaust port 8 shown in the figure can be provided with a valve, and the flow rate and / or direction of the exhaust air flow can be controlled by adjusting the valve to adapt to different usage environments and needs, thereby ensuring that the strength and coverage of the air curtain can reach the optimal state.

[0052] When the anti-pollution isolation cover is working, the air inlet 7 serves as the entrance of the air flow and is connected to an external compressed air source. After the air source is started, gas is continuously transported to the energy storage cavity 6. As the gas is continuously compressed in the energy storage cavity 6, the pressure inside the energy storage cavity 6 begins to gradually rise. Under the action of the pressure difference between the inside and the outside, the gas inside the energy storage cavity 6 is ejected outward from the exhaust hole 8.

[0053] The cross-sectional area of the air inlet 7 is larger than that of the exhaust port 8, so that the air intake speed is greater than the exhaust speed. The airflow ejected from the exhaust port 8 can generate a higher speed and a stronger impact force, so that the airflow can form a tighter and more evenly distributed wind curtain, which can effectively isolate pollutants such as dust and powder outside the signal input opening 10, and prevent pollutants from approaching the optical sensor and affecting the optical signal reception.

[0054] Depend on Figure 4 It can be seen that the energy storage cavity 6 of this embodiment is designed as a square cylinder. The square cylinder energy storage cavity 6 can make more efficient use of space and is easy to transport and install. In practical applications, the energy storage cavity 6 can also be designed as a cylindrical shape. At the same volume, the surface area of a cylinder is less than that of a cube, which means that the cylindrical energy storage cavity requires less material and is less expensive. At the same time, the square cylinder and cylindrical energy storage cavities can effectively guide the airflow to the exhaust port 8, reducing the consumption of airflow kinetic energy.

[0055] Figure 5 A schematic diagram of a simulation of an air curtain formed by an embodiment of an anti-contamination isolation cover for a sensor according to the present invention is shown. This example uses computational fluid dynamics (CFD) software to simulate and analyze the air curtain effect generated by the anti-contamination isolation cover of this embodiment.

[0056] from Figure 5As can be seen in the simulation diagram, the gray portion represents the structure of the anti-pollution shield of this embodiment, and the blue streamlines represent the gas flow path. Different colors indicate flow velocity, with lighter and darker blue areas indicating higher flow velocity, while darker areas indicate lower flow velocity. The blue areas in the diagram clearly show that the gas ejected from the exhaust port exhibits a distinctly high flow velocity. Furthermore, this high-speed gas does not dissipate immediately after leaving the exhaust port, but instead maintains a steady flow trend. The resulting air curtain effectively covers the signal input opening and bypasses the spoiler to be directed to the outside world.

[0057] This simulation result verifies the feasibility and effectiveness of the anti-pollution isolation cover of this embodiment, and proves that the anti-pollution isolation cover can form a stable wind curtain barrier, which can effectively intercept possible invading pollutants and maximize the protection of the optical sensor from interference from external adverse factors. The optical sensor will not suffer performance degradation, data corruption, or even equipment damage due to pollutant deposition.

[0058] This utility model's anti-contamination isolation cover for sensors is designed to protect the sensitive components of optical sensors from environmental contamination. Optical sensors in this context are not limited to traditional visible light sensors; rather, they are capable of receiving and responding to wavelengths across the electromagnetic spectrum, including but not limited to gamma rays, X-rays, ultraviolet light, visible light, infrared, terahertz waves, microwaves, and radio waves. Contaminants deposited on the sensor surface can scatter, absorb, or deflect electromagnetic waves, reducing the sensor's measurement accuracy.

[0059] In some embodiments, by installing an anti-pollution isolation cover, interference of pollutants on the sensor can be reduced or avoided, thereby maintaining high-precision measurement results.

[0060] Pollutants, especially corrosive substances, can accelerate the aging or damage of sensor materials, shortening the life of the device. In some embodiments, an anti-pollution shield can protect the sensor from these harmful substances, extending its service life and reducing the frequency of replacement and maintenance.

[0061] In some embodiments, the anti-contamination isolation cover can reduce the frequent cleaning and maintenance required for the sensor due to contamination problems, reduce maintenance costs and time, and also reduce the impact of downtime maintenance on production or research work.

[0062] In harsh environments such as mining, chemical industry, and nuclear power plants, sensors are often exposed to extreme pollution conditions. In some embodiments, the anti-pollution isolation cover enables the sensor to continue to operate normally in these environments, expanding its application range.

[0063] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above implementation without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the scope of the present invention.

Claims

1. An anti-pollution isolation cover for a sensor, characterized in that: The anti-pollution isolation cover comprises: A housing (1), the housing being used to accommodate the sensor, the housing (1) having a signal input opening (10); and An air curtain system (2) is provided at the signal input opening (10), the air curtain system (2) comprises an energy storage cavity (6) and a spoiler (9), the energy storage cavity (6) and the spoiler (9) are respectively located on both sides of the signal input opening (10), the energy storage cavity (6) has an air inlet (7) and an air outlet (8), the air inlet (7) is connected to a compressed air source, and the air outlet (8) discharges airflow toward the spoiler (9), and the airflow forms an air curtain at the signal input opening (10) for protecting the sensor.

2. The anti-pollution isolation cover according to claim 1, characterized in that: The energy storage cavity (6) is cylindrical, the exhaust port (8) is an air slit or exhaust hole extending along a first side surface of the energy storage cavity (6) and facing the spoiler (9), the spoiler (9) is provided with an air flow guiding surface for guiding the air flow away from the wind curtain on a side facing the exhaust port (8), and the length of the air slit or the width of the exhaust hole is greater than the width or diameter of the signal input opening (10).

3. The anti-pollution isolation cover according to claim 2, characterized in that: The energy storage cavity (6) is in the shape of a square cylinder or a cylinder.

4. The anti-pollution isolation cover according to claim 2, characterized in that: The air inlet (7) is an air gap extending along the second side surface of the energy storage cavity (6), and the area of the air inlet (7) is larger than the area of the air outlet (8).

5. The anti-pollution isolation cover according to claim 1, characterized in that: The housing (1) comprises a cylindrical portion (3) and a conical portion (4), wherein the cylindrical portion (3) provides an accommodating space for the sensor, and the conical portion (4) provides a signal channel between the cylindrical portion (3) and the signal input opening (10).

6. The anti-pollution isolation cover according to claim 5, characterized in that: The cylindrical portion (3) is cylindrical, the signal input opening (10) is square, the tapered portion (4) has a circular end connected to the cylindrical portion (3) and a square end connected to the signal input opening (10), and the tapered portion (4) gradually shrinks from the circular end to the square end.

7. The anti-pollution isolation cover according to claim 1, characterized in that: The housing (1) is made of corrosion-resistant material.

8. The anti-pollution isolation cover according to claim 1, characterized in that: The air curtain system (2) has a square mounting seat (5), the square mounting seat (5) provides the signal input opening (10), and the energy storage cavity (6) and the spoiler (9) are arranged on the square mounting seat (5).

9. The anti-pollution isolation cover according to claim 1, characterized in that: The compressed air source is a compressed air tank or a blower, and a valve is installed at the exhaust port (8) for controlling the flow rate and / or direction of the air flow.

10. The anti-pollution isolation cover according to any one of claims 1 to 9, characterized in that: The sensor is an optical sensor.

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