A wind screen

Abstract

The utility model relates to a kind of wind screen type shield, including shield body, by the cylindrical outer shield and inner shield of coaxial sleeve, annular interlayer air duct is formed between the outer shield and the inner shield, the air inlet that is communicated with the interlayer air duct is opened in the outer shield;Front seal piece, including the front seal end plate of fixed connection in one end of the shield body, the front cover plate of setting towards the one end outside of the shield body and the window pane of being clamped between the front seal end plate and the front cover plate;Vent hole is opened in the front seal end plate;By setting front seal end plate, front cover plate, gas collection groove and wind screen guide groove in front seal piece, compressed gas that interlayer air duct flows out is accumulated and pressurized in gas collection groove, and directional ejection is carried out via the wind screen guide groove of specific position and shape, form stable, high-pressure dust-removing wind screen to cover the surface of window pane, reach the effect of efficient, continuous removal of window pane surface dust.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal with protective covers, specifically a wind curtain type protective cover. Background Technology

[0002] In high-temperature production environments, various precision imaging devices (such as industrial cameras) are often deployed for process monitoring or quality inspection. However, these imaging components are temperature-sensitive precision electronic products with limited normal operating temperature ranges, making them difficult to withstand the high temperatures of the field. Therefore, they must be encapsulated and isolated using a protective shield structure, and an active cooling mechanism is usually required to dissipate heat inside the shield to maintain a suitable operating temperature for the imaging components.

[0003] In addition, such production sites are usually accompanied by a certain amount of dust pollution. Dust particles easily adhere to the viewing window at the front of the protective cover, severely obstructing the view and causing blurred or even malfunctioning images, which has a significant impact on vision-based monitoring and control.

[0004] Currently, there are two main traditional solutions for dust removal and protection of viewing windows:

[0005] 1. Mechanical Scraping Dust Removal: This method is similar to a car windshield wiper, using a drive mechanism to move a rubber strip across the window sill to remove dust periodically or continuously. Its significant disadvantage is:

[0006] Additional drive motors, transmission mechanisms, and control systems are required, increasing the complexity and cost of the equipment.

[0007] Long-term dry shaving can easily cause cumulative scratches on the surface of the viewing window (especially transparent materials), reducing light transmittance and ultimately affecting image quality.

[0008] Its application is limited, mainly applicable to protective structures with rigid transparent windows (such as glass).

[0009] 2. Annular Airflow Dust Prevention: This design features a ring of air vents around the viewing window, causing cooling / compressed gas to be blown forward in a cone shape (usually along the axis of the shield), aiming to cover the entire viewing window surface and utilize the airflow from the cooling system. However, this design has significant shortcomings:

[0010] Insufficient wind pressure and speed: The overall cross-sectional area of ​​the annular air outlet is relatively large, which leads to a significant reduction in air outlet speed and wind pressure, resulting in weak dust removal capacity.

[0011] Uneven airflow and turbulence: It is difficult to ensure a uniform distribution of airflow and a precise and consistent cone angle throughout the entire circle, which can easily lead to localized airflow deviation. More seriously, vortices or turbulent areas can easily form near the convergence point of airflows from different directions in front of the viewing window.

[0012] Secondary pollution risk: The aforementioned turbulence not only fails to effectively remove dust, but may also engulf, suck up and blow particulate matter or splashes in the environment toward the viewing window, or even "lock" them in the turbulence zone and prevent them from being discharged, causing dust to accumulate on the surface of the viewing window and ultimately causing more serious pollution problems.

[0013] Therefore, there is an urgent need for a highly efficient dust removal technology that can effectively utilize heat dissipation airflow while avoiding the shortcomings of traditional solutions, so as to ensure the continuous clarity of the imaging window in high-temperature and dusty environments. Utility Model Content

[0014] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a wind curtain type protective cover.

[0015] The technical solution adopted in this utility model includes:

[0016] The protective cover body is composed of a cylindrical outer protective cover and an inner protective cover that are coaxially fitted together. An annular sandwich air duct is formed between the outer protective cover and the inner protective cover. An air inlet communicating with the sandwich air duct is provided on the outer protective cover.

[0017] The front sealing element includes a front sealing end plate fixedly connected to one end of the protective cover body, a front cover plate disposed facing the outer side of one end of the protective cover body, and a viewing window plate sandwiched between the front sealing end plate and the front cover plate; the front sealing end plate has ventilation holes; an air collecting groove is formed on the inner surface of the front cover plate, the air collecting groove is in fluid communication with the interlayer air duct through the ventilation holes, and an air curtain guide groove is formed on the inner surface of the front cover plate, the air curtain guide groove is in communication with the air collecting groove, and is used to guide the airflow flowing out of the air collecting groove into a dust removal air curtain flowing from top to bottom along the outer surface of the viewing window plate; the viewing window plate is directly below the air curtain guide groove.

[0018] The rear cover is fixedly connected to the end of the protective cover body away from the front cover, and its inner wall is used to install the imaging element. The internal space of the inner cover accommodates the imaging element.

[0019] As a preferred embodiment of the present invention, the inner side of the front end plate is provided with an inner cover mounting groove for limiting the end of the inner cover, the outer side of the front end plate is provided with a window plate mounting groove for limiting the window plate, and the front end plate is provided with a first sealing groove at the end of the window plate mounting groove away from the front cover plate.

[0020] As a preferred embodiment of this invention, the air curtain guide groove covers a portion of the inner surface of the front cover plate.

[0021] As a preferred embodiment of the present invention, the center of the front cover plate forms a through groove for exposing the window panel, the through groove is connected to the air curtain guide groove, and the wall of the through groove forms an inclined surface that slopes outward toward the outer side of the cover.

[0022] As a preferred embodiment of this utility model, the front cover plate has a first mounting hole for connecting the front sealing end plate and clamping the window plate; an annular flange is formed at the outer edge of the inner side of the front cover plate, and the annular flange is engaged with the end of the outer cover; a second sealing groove is formed on the inner side of the front cover plate.

[0023] As a preferred embodiment of the present invention, the rear sealing member includes a rear sealing end plate and a rear cover plate, the rear sealing end plate is connected between the outer protective cover and the inner protective cover, the rear cover plate is connected to the outside of the rear sealing end plate, and the rear sealing end plate is provided with a third sealing groove.

[0024] As a preferred embodiment of this utility model, the outer ring of the rear end plate is fixedly connected to the inner wall of the outer protective cover, and the rear end plate is provided with an inner protective cover connecting groove for accommodating the end of the inner protective cover; the rear cover plate is provided with a second mounting hole, which is used for the fixed connection of the rear cover plate to the rear end plate.

[0025] As a preferred embodiment of this utility model, a bracket is fixedly provided on the inner side of the rear cover plate, and the bracket is used to fix the imaging element.

[0026] As a preferred embodiment of this utility model, the end face of the rear cover plate is provided with a wire harness connector.

[0027] The beneficial effects of this utility model are as follows:

[0028] This utility model is a type of air curtain protective cover.

[0029] 1. By setting the front sealing end plate, front cover plate, air collection groove and air curtain guide groove in the front sealing component, the compressed gas flowing out of the interlayer air duct accumulates and pressurizes in the air collection groove, and then is directionally sprayed out through the air curtain guide groove with specific position and shape, forming a stable and high pressure dust removal air curtain covering the surface of the window panel, so as to achieve the effect of efficiently and continuously removing dust from the surface of the window panel.

[0030] 2. By setting up a protective cover body consisting of an outer protective cover and an inner protective cover coaxially fitted together, and the sandwiched air duct formed between them, when the low-temperature compressed gas flows through the sandwiched air duct, it can carry away the heat of the inner protective cover and its internal imaging components through heat transfer, thereby achieving the effect of effectively dissipating heat from the imaging components.

[0031] 3. By setting the inclined wall of the front cover through groove, the dust removal airflow is guided so that it flows outward after cleaning the window, thereby avoiding the secondary adhesion of the dust carried on the window panel surface.

[0032] 4. By setting multiple sealing grooves on the front end plate, front cover plate, rear end plate, and rear cover plate, and installing sealing elements in them, the effect of effectively preventing external dust from entering the imaging component's internal space under the protective cover is achieved, thus protecting the precision imaging component. Attached Figure Description

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention;

[0036] Figure 3 This is a three-dimensional structural diagram of the front cover plate of this utility model;

[0037] Figure 4 This is a side view of the front cover of this utility model.

[0038] In the diagram: 1. Protective cover body, 11. Outer protective cover, 12. Inner protective cover, 13. Interlayer air duct, 14. Air inlet, 15. Support frame, 16. Imaging component;

[0039] 2 Front seal, 21 Front end plate, 211 Ventilation hole, 212 Inner cover mounting groove, 213 Window plate mounting groove, 214 First sealing groove, 22 Front cover plate, 221 Air collection groove, 222 Air curtain guide groove, 223 First mounting hole, 224 Flanged edge, 225 Second sealing groove, 226 Through groove, 227 Bevel, 23 Window plate;

[0040] 3 Rear seal, 31 Rear end plate, 311 Third sealing groove, 312 Inner cover connecting groove, 32 Rear cover plate, 321 Second mounting hole, 322 Wire harness connector. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] The following is combined Figure 1-4 This invention describes a specific embodiment of a curtain-type protective cover, comprising: a cover body 1, consisting of a coaxially sleeved cylindrical outer cover 11 and an inner cover 12, forming an annular interlayer air duct 13 between the outer cover 11 and the inner cover 12; an air inlet 14 communicating with the interlayer air duct 13 is provided on the outer cover 11, and compressed gas enters the interlayer air duct 13 through the air inlet 14. During the flow of gas within the interlayer air duct 13, the low-temperature compressed gas can carry heat from the interlayer air duct 13 and the inner cover 12 itself through heat transfer, thereby providing some heat dissipation for the imaging element 16 inside the inner cover 12; The front sealing element 2 includes a front sealing end plate 21 fixedly connected to one end of the protective cover body 1, a front cover plate 22 facing the outer side of one end of the protective cover body 1, and a viewing window plate 23 sandwiched between the front sealing end plate 21 and the front cover plate 22. The front sealing end plate 21 has ventilation holes 211. The inner surface of the front cover plate 22 forms an air collecting groove 221, which is in fluid communication with the interlayer air duct 13 through the ventilation holes 211. The inner surface of the front cover plate 22 has an air curtain guide groove 222, which communicates with the air collecting groove 221 and guides the airflow from the air collecting groove 221 into a dust removal air curtain flowing downwards along the outer surface of the viewing window plate 23. Compressed gas is introduced through the air inlet 14 and sequentially passes through the interlayer air duct 13 and the ventilation holes 211 before entering the air collecting groove 221. Because the gas collecting groove 221 is annular and its two ends are blocked by the front end plate 21 and the front cover plate 22 respectively, gas is blocked and accumulates inside the gas collecting groove 221. By opening an air curtain guide groove 222 on the front cover plate 22 used to block the gas collecting groove 221, and connecting the air curtain guide groove 222 to the gas collecting groove 221, the gas accumulated in the gas collecting groove 221 can be transported through the air curtain guide groove 222 and sprayed out directly above the outer side of the viewing window plate 23. The area of ​​the air curtain guide groove 222 is only a part of the inner side of the front cover plate 22. By reducing the flow area of ​​the air curtain guide groove 222, making it the main outlet of compressed gas and guiding the gas, the pressure of the gas output from the air curtain guide groove 222 is increased, the stable output of the air curtain is maintained, and the dust removal effect on the viewing window plate 23 is enhanced.

[0044] The rear cover 3 is fixedly connected to the end of the protective cover body 1 away from the front cover 2, and its inner wall is used to install the imaging element 16. The internal space of the inner protective cover 12 accommodates the imaging element 16.

[0045] Please refer to Figures 2-4 As shown, the inner side of the front end plate 21 has an inner cover mounting groove 212 for limiting the end of the inner cover 12. The outer cover 11 and the inner cover 12 are connected to the front end plate 21 through the inner cover mounting groove 212, so that the front end plate 21 can engage and position the cover body 1. On the one hand, a sandwich air duct 13 is formed between the outer cover 11 and the inner cover 12; on the other hand, a sealed space is formed inside the inner cover 12 for installing the imaging element 16. The outer side of the front end plate 21 has a window plate mounting groove 213 for limiting the window plate 23. The window plate mounting groove 213 is used to limit the installation of the window plate 23. After the window plate 23 is installed in the window plate mounting groove 213, the window plate 23 can be clamped between the front end plate 21 and the front cover plate 22 by the fixed installation of the front cover plate 22 on the front end plate 21. The front end plate 21 has a first sealing groove 214 at the end of the window plate mounting groove 213 away from the front cover plate 22. The first sealing groove 214 is used to install a sealing element to ensure a sealed connection between the window plate 23 and the front end plate 21, and to prevent external dust particles from entering the receiving space of the imaging element 16 through gaps.

[0046] Please refer to Figures 2-4 As shown, the air curtain guide groove 222 covers a portion of the inner surface of the front cover plate 22, reducing the outlet area of ​​the compressed gas to replace the traditional full-circumferential air outlet. In this embodiment, the air curtain guide groove 222 preferably occupies one-quarter of the area of ​​the front cover plate 22 and is located directly above the viewing window plate 23. One end of it communicates with the air collection groove 221, and the other end outputs compressed gas towards the viewing window plate 23.

[0047] Please refer to Figure 2 As shown, a through groove 226 is formed in the center of the front cover plate 22 to expose the viewing window plate 23. The through groove 226 connects to the air curtain guide groove 222. The wall of the through groove 226 forms an inclined surface 227 that slopes outward from the outer side of the cover. The inclined surface 227 can guide the gas output from the air curtain guide groove 222, so that the gas output from the air curtain guide groove 222 flows axially outward from the outer surface of the viewing window plate 23 after passing through it, thus preventing the dust carried by the gas from falling onto the outer surface of the viewing window plate 23 again.

[0048] Please refer to Figures 2-4As shown, the front cover plate 22 has a first mounting hole 223 for connecting the front end plate 21 and clamping the viewing window plate 23. The first mounting hole 223 is used for connecting the front cover plate 22 to the front end plate 21 and for clamping and fixing the viewing window plate 23. The front end plate 21 and the protective cover body 1 are interference-fitted. An annular flange 224 is formed at the outer edge of the inner side of the front cover plate 22, and the annular flange 224 engages with the end of the outer protective cover 11 to improve the stability of the connection between the front cover plate 22 and the protective cover body 1. A second sealing groove 225 is provided on the inner side of the front cover plate 22. The second sealing groove 225 is used to install a sealing element to improve the sealing effect inside the interlayer air duct 13 and prevent the compressed gas flowing through the ventilation hole 211 from communicating with the outside.

[0049] Please refer to Figure 1 As shown, the rear sealing element 3 includes a rear sealing end plate 31 and a rear cover plate 32. The rear sealing end plate 31 is connected between the outer protective cover 11 and the inner protective cover 12, and the rear cover plate 32 is connected to the outside of the rear sealing end plate 31. The rear sealing end plate 31 has a third sealing groove 311. The rear cover plate 32 is bolted to the rear sealing end plate 31, and the rear sealing end plate 31 is fixedly connected to the protective cover body 1 with an interference fit. The third sealing groove 311 is used to install a sealing element to prevent external gas from carrying dust into the imaging element 16 accommodating space.

[0050] Please refer to Figure 1 As shown, the outer ring of the rear end plate 31 is fixedly connected to the inner wall of the outer protective cover 11, and the rear end plate 31 is provided with an inner protective cover connecting groove 312 for accommodating the end of the inner protective cover 12; the rear cover plate 32 is provided with a second mounting hole 321, which is used for the fixed connection of the rear cover plate 32 on the rear end plate 31.

[0051] Please refer to Figure 1 As shown, a bracket 15 is fixedly provided on the inner side of the rear cover plate 32, and the bracket 15 is used to fix the imaging element 16.

[0052] Please refer to Figure 1 As shown, the rear cover plate 32 has a wire harness connector 322 on its end face for connecting the power supply and signal transmission wire harness of the imaging element 16.

[0053] Working principle of this utility model:

[0054] Low-temperature compressed gas flows into the interlayer air duct 13 through the air inlet 14. During the flow process in the interlayer air duct 13, the heat generated by the imaging element 16 can be transferred to the interlayer air duct 13 through the inner protective cover 12. By continuously supplying low-temperature compressed gas into the interlayer air duct 13, the heat in the interlayer air duct 13 can be carried away, and the heat dissipation effect of the imaging element 16 can be achieved under the action of the continuous low-temperature compressed gas.

[0055] Compressed gas in the interlayer air duct 13 flows through the ventilation holes 211 and into the air collection groove 221. Because the two ends of the air collection groove 221 are blocked by the front end plate 21 and the front cover plate 22 respectively, the compressed gas accumulates and becomes pressurized within the air collection groove 221. After the pressure increases within the air collection groove 221, the compressed gas is output through the air curtain guide groove 222, which connects to the outside at the top. The output end is located directly above the outer surface of the viewing window panel 23. Under the pressurization effect of the air collection groove 221, high-pressure compressed gas is stably output to the outer surface of the viewing window panel 23, forming a top-down air curtain that blows away dust from the outer surface of the viewing window panel 23, thereby improving the dust removal effect on the outer surface of the viewing window panel 23.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A wind curtain-type protective cover, characterized in that, include: The protective cover body (1) is composed of a cylindrical outer protective cover (11) and an inner protective cover (12) coaxially fitted together. An annular sandwich air duct (13) is formed between the outer protective cover (11) and the inner protective cover (12). An air inlet (14) communicating with the sandwich air duct (13) is provided on the outer protective cover (11). The front sealing element (2) includes a front sealing end plate (21) fixedly connected to one end of the protective cover body (1), a front cover plate (22) disposed on the outer side of one end of the protective cover body (1), and a viewing window plate (23) sandwiched between the front sealing end plate (21) and the front cover plate (22); the front sealing end plate (21) is provided with a ventilation hole (211); the inner surface of the front cover plate (22) is formed with an air collecting groove (221), the air collecting groove (221) The air curtain is in fluid communication with the interlayer air duct (13) through the ventilation hole (211). The inner surface of the front cover plate (22) is provided with an air curtain guide groove (222). The air curtain guide groove (222) is in communication with the air collection groove (221) and is used to guide the airflow from the air collection groove (221) into a dust removal air curtain from top to bottom along the outer surface of the window plate (23). The window plate (23) is directly below the air curtain guide groove (222). The rear cover (3) is fixedly connected to the end of the protective cover body (1) away from the front cover (2), and its inner wall is used to install the imaging element (16). The internal space of the inner cover (12) accommodates the imaging element (16).

2. The air curtain type protective cover according to claim 1, characterized in that: The inner side of the front end plate (21) is provided with an inner cover mounting groove (212) for limiting the end of the inner cover (12), and the outer side of the front end plate (21) is provided with a window plate mounting groove (213) for limiting the window plate (23). The front end plate (21) has a first sealing groove (214) at the end of the window plate mounting groove (213) away from the front cover plate (22).

3. The air curtain type protective cover according to claim 2, characterized in that: The air curtain guide groove (222) covers a portion of the inner surface of the front cover plate (22).

4. A curtain-type protective cover according to claim 3, characterized in that: The front cover (22) has a through groove (226) at its center for the window panel (23) to be exposed. The through groove (226) is connected to the air curtain guide groove (222). The wall of the through groove (226) forms an inclined surface (227) that slopes outward toward the outer side of the cover.

5. A curtain-type protective cover according to claim 1, characterized in that: The front cover plate (22) is provided with a first mounting hole (223) for connecting the front sealing end plate (21) and clamping the window plate (23); an annular flange (224) is formed at the outer edge of the inner side of the front cover plate (22), and the annular flange (224) is engaged with the end of the outer cover (11); a second sealing groove (225) is provided on the inner side of the front cover plate (22).

6. A curtain-type protective cover according to claim 5, characterized in that: The rear seal (3) includes a rear sealing end plate (31) and a rear cover plate (32). The rear sealing end plate (31) is connected between the outer protective cover (11) and the inner protective cover (12). The rear cover plate (32) is connected to the outside of the rear sealing end plate (31). The rear sealing end plate (31) has a third sealing groove (311).

7. A curtain-type protective cover according to claim 6, characterized in that: The outer ring of the rear end plate (31) is fixedly connected to the inner wall of the outer protective cover (11). The rear end plate (31) has an inner protective cover connecting groove (312) for accommodating the end of the inner protective cover (12). The rear cover plate (32) has a second mounting hole (321) for fixing the rear cover plate (32) to the rear end plate (31).

8. A curtain-type protective cover according to claim 6, characterized in that: A bracket (15) is fixedly provided on the inner side of the rear cover plate (32), and the bracket (15) is used to fix the imaging element (16).

9. A curtain-type protective cover according to claim 8, characterized in that: The rear cover plate (32) has a wire harness connector (322) on its end face.

Images