Water curtain dust and odor removal device capable of preventing water splashing

Abstract

The present application relates to the technical field of water curtain cabinet, and discloses a water curtain dust and odor removal device capable of preventing water splashing, which comprises a water curtain machine and an arc-shaped water flow plate, the arc-shaped water flow plate is arranged in the water curtain machine, and the water curtain machine is internally provided with a kinetic energy collecting assembly for converting water flow potential energy, the setting of the sewage collecting block achieves the purpose of avoiding the water source containing harmful gas and particulate matter from splashing around the operator, avoids the operator from slipping or being splashed by water due to the splashing of the water source, thereby reducing the accident risk, and improving the overall safety of the laboratory or working environment, the water curtain cabinet usually needs to consume a large amount of water to maintain normal working state, the setting of the first filter screen and the second filter screen achieves the purpose of reducing the work of sewage filtration of the water curtain cabinet, completes the effective filtration of pollutants in the water curtain machine, reduces the pollution of sewage to the environment, and achieves the purpose of automatically removing particulate matter, harmful gas and the like accumulated in the water curtain machine.

Description

Technical Field

[0001] This invention relates to the field of water curtain cabinet technology, specifically to a water curtain dust removal and odor removal device that can prevent water splashing. Background Technology

[0002] A water curtain cabinet is a safety device used in laboratories, industrial production, or other places to control, reduce, or eliminate the diffusion and spread of harmful substances in the air. It typically consists of a series of nozzles that spray water mist downwards to form a water curtain, thereby effectively blocking the diffusion of harmful gases, particles, or pollutants.

[0003] When water curtain cabinets are in operation, improper nozzle adjustment can lead to uneven water mist spraying or excessive spray force. Clogged or worn nozzles can also cause water mist to splash out. Furthermore, excessive water pressure increases the spray force, causing some water droplets to detach from the water curtain and splash into the surrounding environment. High water pressure in the water curtain cabinet can also cause water mist to splash out. Airflow around the water curtain cabinet can also affect the diffusion and splashing of the water mist. If there is a strong airflow or ventilation system nearby, it can blow the water mist out of the water curtain cabinet. If harmful gases and particulate matter splash around the operators, it can affect their health and increase the risk of slipping or being splashed, thus increasing the risk of accidents. In addition, frequent splashing during operation leads to water waste and additional water consumption. Avoiding splashing can effectively save water resources and reduce operating costs. In the environment where water curtain cabinets are used, there are electrical appliances such as power boards, fans, and spray guns. If water splashes in the environment, these electrical appliances can be damaged by water ingress.

[0004] Furthermore, during the operation of the water curtain cabinet, the water curtain intercepts and adsorbs pollutants such as particulate matter and harmful gases in the air. Over time, these pollutants gradually accumulate in the water curtain, water tank, and sediment at the bottom. Prolonged operation will cause these pollutants to accumulate even more, thereby reducing the purification effect of the water curtain cabinet. At the same time, as the water curtain cabinet operates for longer periods, the water becomes increasingly dirty. The accumulation of pollutants leads to increased turbidity and a decline in water quality. When the water quality deteriorates, the purification effect of the water curtain cabinet will be affected, and it will be unable to effectively remove pollutants from the air. Moreover, if the water curtain cabinet is not regularly maintained and cleaned, such as removing accumulated pollutants and replacing the water curtain, the purification effect will decrease. Additionally, pollutants in the water curtain cabinet can affect its normal operation due to long-term blockage. Since there is no equipment specifically designed for cleaning water curtain cabinets on the market, and most water curtain cabinets on the market are cleaned manually, the wastewater requires a long time and a lot of labor. Manual cleaning leads to low cleaning efficiency. In addition, incomplete cleaning and untimely cleaning will also affect the normal operation and purification effect of the water curtain cabinet.

[0005] Therefore, a water curtain dust removal and odor removal device that can prevent water splashing is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a water curtain dust removal and odor removal device that can prevent water splashing, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a water curtain dust removal and odor removal device that prevents water splashing, comprising a water curtain machine and an arc-shaped water flow plate, wherein the arc-shaped water flow plate is disposed inside the water curtain machine, and the water curtain machine is provided with a kinetic energy collection component for converting the potential energy of the water flow, wherein:

[0008] The kinetic energy harvesting assembly includes a fixed frame, which is fixedly connected to the bottom of the inner cavity of the water curtain machine. A rotating wheel is rotatably connected to the top of the fixed frame. A water collection box assembly is fixedly connected to the outer wall of the rotating wheel 22. A first rotating rod is rotatably connected to the bottom of the fixed frame. A transmission belt is drivingly connected between the first rotating rod and the rotating wheel. A Z-shaped connecting rotating block is rotatably connected to the end of the first rotating rod away from the transmission belt. A second transmission rod is rotatably connected to the end of the Z-shaped connecting rotating block away from the first rotating rod.

[0009] The water curtain machine is equipped with a double-layer filtration system, wherein:

[0010] The dual-layer filtration assembly includes a wastewater collection block fixedly connected to the bottom of the inner cavity of the water curtain machine. A square hollow block is fixedly connected to the bottom of the wastewater collection block. A first elastic strip assembly is fixedly connected to the bottom of the wastewater collection block. A first filter screen is fixedly connected to the end of the first elastic strip assembly away from the wastewater collection block. A second elastic strip assembly is fixedly connected to the outer wall of the first filter screen. A second filter screen is fixedly connected to the end of the second elastic strip assembly away from the first filter screen. An L-shaped fixing plate is fixedly connected to the end of the second transmission rod away from the Z-shaped connecting rotating block. The side of the L-shaped fixing plate away from the second transmission rod rotates. A drive rod is connected, with the end of the drive rod away from the L-shaped fixing piece rotatably connected to the outer wall of the second filter screen. An arc groove plate is fixedly connected to the inner wall of the square hollow block. A cylindrical slider is fixedly connected to the end of the L-shaped fixing piece away from the second drive rod. An L-shaped fixing rod is fixedly connected to the inner wall of the square hollow block. A grooved rod is rotatably connected to the end of the L-shaped fixing rod away from the square hollow block. A connecting rod is rotatably connected to the top of the grooved rod. A cylindrical slide rod is rotatably connected to the end of the connecting rod away from the grooved rod. The cylindrical slide rod is slidably connected to the top of the first filter screen. A cleaning strip is provided inside the first filter screen.

[0011] Preferably, the transmission belt is made of polyvinyl chloride.

[0012] Preferably, the second transmission rod is rotatably connected inside the square hollow block.

[0013] Preferably, the cylindrical slider is slidably connected inside the grooved rod.

[0014] Preferably, the cylindrical slider is slidably connected to the outer wall of the arc groove disk on the side away from the square hollow block.

[0015] Preferably, the cylindrical slide bar is fixedly connected to the cleaning strip on the side closest to the first filter screen.

[0016] Preferably, the inner wall of the sewage collection block is inclined.

[0017] Preferably, the cleaning strip is made of rubber.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By setting up wastewater collection blocks, the purpose of preventing water containing harmful gases and particulate matter from splashing around the operators is achieved, avoiding the risk of operators slipping or being splashed by water due to water spray, thereby reducing the risk of accidents and improving the overall safety of the laboratory or work environment. Water curtain cabinets usually require a lot of water to maintain normal operation. Avoiding water waste and consumption caused by water splashing effectively saves water resources and reduces operating costs. It also prevents water splashing during the use of the water curtain cabinet from causing water damage to surrounding electrical appliances.

[0020] 2. By setting up the first and second filters, the workload of wastewater filtration in the water curtain cabinet is reduced, effectively filtering pollutants in the water curtain machine, reducing the pollution of the environment by wastewater, and automatically removing particulate matter and harmful gases accumulated in the water curtain machine, maintaining the cleanliness and stability of the water quality, thereby improving the purification efficiency of the water curtain cabinet. At the same time, it avoids the situation of not cleaning the filters in time, effectively preventing pollutants from entering the water curtain and water tank, reducing the risk of blockage and damage, thus extending the service life of the water curtain and equipment, improving the cleaning efficiency of the water curtain machine, reducing the need for manual cleaning, achieving centralized filtration and separation of pollutants, simplifying the maintenance and cleaning work inside the water curtain cabinet, and improving the working efficiency of the water curtain machine. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the overall structural positional relationship of the present invention;

[0022] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 This is a schematic diagram showing the positional relationship between the rotating wheel, the water collection box assembly, and the first rotating rod of the present invention;

[0024] Figure 4 This is a schematic diagram showing the positional relationship of the dual-layer filter assembly of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 This is a schematic diagram showing the positional relationship between the first rotating rod, the second transmission rod, and the Z-shaped connecting rotating block of the present invention;

[0027] Figure 7 This is a schematic diagram showing the positional relationship between the first elastic strip group, the first filter screen, the second elastic strip group, and the second filter screen of the present invention.

[0028] Figure 8 For the present invention Figure 7 Enlarged view at point B in the middle;

[0029] Figure 9 This is a schematic diagram showing the positional relationship between the arc groove disk, cylindrical slider, and L-shaped fixing rod of the present invention.

[0030] In the picture:

[0031] 11. Water curtain machine; 12. Curved water flow plate;

[0032] The kinetic energy harvesting assembly includes: 21, a fixed frame; 22, a rotating wheel; 23, a water collection box assembly; 24, a first rotating rod; 25, a transmission belt; 26, a second transmission rod; and 27, a Z-shaped connecting rotating block.

[0033] The dual-layer filter assembly includes: 31, wastewater collection block; 32, square hollow block; 33, first elastic strip assembly; 34, first filter screen; 35, second elastic strip assembly; 36, second filter screen; 37, L-shaped fixing plate; 38, drive rod; 39, arc groove plate; 310, cylindrical slider; 311, L-shaped fixing rod; 312, grooved rod; 313, connecting rod; 314, cylindrical slide bar; 315, cleaning strip. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0035] Please see Figures 1 to 9 As shown, the present invention provides an embodiment:

[0036] A water curtain dust removal and odor removal device that prevents water splashing includes a water curtain machine 11 and an arc-shaped water flow plate 12. The arc-shaped water flow plate 12 is disposed inside the water curtain machine 11. The water curtain machine 11 is equipped with a kinetic energy collection component for converting the potential energy of the water flow.

[0037] The kinetic energy harvesting assembly includes a fixed frame 21, which is fixedly connected to the bottom of the inner cavity of the water curtain machine 11. A rotating wheel 22 is rotatably connected to the top of the fixed frame 21. A water collection box assembly 23 is fixedly connected to the outer wall of the rotating wheel 22. A first rotating rod 24 is rotatably connected to the bottom of the fixed frame 21. A transmission belt 25 is connected between the first rotating rod 24 and the rotating wheel 22. A Z-shaped connecting rotating block 27 is rotatably connected to the end of the first rotating rod 24 away from the transmission belt 25. A second transmission rod 26 is rotatably connected to the end of the Z-shaped connecting rotating block 27 away from the first rotating rod 24.

[0038] The transmission belt 25 is made of polyvinyl chloride, which makes it waterproof and wear-resistant. The second transmission rod 26 is rotatably connected inside the square hollow block 32 and is used to connect the kinetic energy harvesting component to drive the double-layer filter component.

[0039] The water curtain machine 11 is equipped with a double-layer filtration system, in which:

[0040] The dual-layer filtration assembly includes a wastewater collection block 31, which is fixedly connected to the bottom of the inner cavity of the water curtain machine 11. A square hollow block 32 is fixedly connected to the bottom of the wastewater collection block 31. A first elastic strip group 33 is fixedly connected to the bottom of the wastewater collection block 31. A first filter screen 34 is fixedly connected to the end of the first elastic strip group 33 away from the wastewater collection block 31. A second elastic strip group 35 is fixedly connected to the outer wall of the first filter screen 34. A second filter screen 36 is fixedly connected to the end of the second elastic strip group 35 away from the first filter screen 34. An L-shaped fixing plate 37 is fixedly connected to the end of the second transmission rod 26 away from the Z-shaped connecting rotating block 27. A drive rod 38 is rotatably connected to the side of the L-shaped fixing plate 37 away from the second transmission rod 26. The drive rod 38 is rotatably connected to the outer wall of the second filter screen 36 at one end away from the L-shaped fixing piece 37. An arc groove plate 39 is fixedly connected to the inner wall of the square hollow block 32. A cylindrical slider 310 is fixedly connected to the end of the L-shaped fixing piece 37 away from the second transmission rod 26. An L-shaped fixing rod 311 is fixedly connected to the inner wall of the square hollow block 32. A grooved rod 312 is rotatably connected to the end of the L-shaped fixing rod 311 away from the square hollow block 32. A connecting rod 313 is rotatably connected to the top of the grooved rod 312. A cylindrical slide rod 314 is rotatably connected to the end of the connecting rod 313 away from the grooved rod 312. The cylindrical slide rod 314 is slidably connected to the top of the first filter screen 34. A cleaning strip 315 is provided inside the first filter screen 34.

[0041] The cylindrical slider 310 is slidably connected to the inside of the grooved rod 312, allowing it to slide inside the grooved rod 312. The cylindrical slider 310 is also slidably connected to the outer wall of the arc grooved disk 39 away from the square hollow block 32, allowing it to slide on the outer wall of the arc grooved disk 39. The cylindrical slide rod 314 is fixedly connected to the cleaning strip 315 on the side near the first filter screen 34, allowing it to move the cleaning strip 315. The inner wall of the sewage collection block 31 is inclined, allowing the water flowing through the arc-shaped water flow plate 12 to collect inside the sewage collection block 31. The cleaning strip 315 is made of rubber, allowing it to better clean the impurities on the top of the first filter screen 34.

[0042] More preferably, when the second transmission rod 26 rotates, it can drive the L-shaped fixing plate 37 to rotate. When the L-shaped fixing plate 37 rotates, it can drive the drive rod 38 to move. The drive rod 38 can make the second filter screen 36 shake, so that the water source falls into the second filter screen 36 and can better filter the sewage. When the second filter screen 36 shakes, it drives the second elastic strip group 35 to shake. The second elastic strip group 35 makes the first filter screen 34 shake as well. When the L-shaped fixing plate 37 rotates, it synchronously drives the cylindrical slider 310 to slide on the outer wall of the arc groove plate 39. When the cylindrical slider 310 moves, it drives the grooved rod 312 to rotate. The grooved rod 312 drives the connecting rod 313 to move back and forth. The connecting rod 313 will drive the cylindrical slide rod 314 to slide on the top of the first filter screen 34. The cylindrical slide rod 314 will drive the cleaning strip 315 to clean the top of the first filter screen 34.

[0043] The working principle of the above embodiments is as follows:

[0044] Initial state:

[0045] The rotating wheel 22 and the water collection box assembly 23 are in a stationary state, and the first elastic strip assembly 33, the first filter screen 34, the second elastic strip assembly 35, and the second filter screen 36 are in a stationary state and have not started to shake.

[0046] The operation steps are as follows:

[0047] The staff first activates the water curtain machine 11, which then drives the water flow over the surface of the arc-shaped water flow plate 12. Because the inner wall of the sewage collection block 31 is inclined, the water flows down through the sewage collection block 31 to the top of the first filter screen 34. After the first filtration by the first filter screen 34, the water falls to the top of the second filter screen 36, undergoing a second filtration. Finally, the water flows into the bottom of the inner cavity of the water curtain machine 11. As the water flows over the surface of the arc-shaped water flow plate 12, it creates a water wall, preventing odors and dust from spreading. Simultaneously, water molecules in the flow carry odors and dust into the water. Inside the water curtain machine 11, the wastewater collection block 31 is installed to prevent water containing harmful gases and particulate matter from splashing around the operator, thus avoiding the operator from slipping or being splashed by water, thereby reducing the risk of accidents and improving the overall safety of the laboratory or working environment. Water curtain cabinets usually consume a lot of water to maintain normal operation. Avoiding water waste and consumption caused by water splashing effectively saves water resources and reduces operating costs. It also prevents water splashing during the use of the water curtain cabinet from causing water damage to surrounding electrical appliances.

[0048] When water flows over the surface of the arc-shaped water flow plate 12, it flows into the interior of the water collection box assembly 23. Due to the downward impact of the water flow, the water collection box assembly 23 drives the rotating wheel 22 to rotate around the fixed frame 21. Since the transmission belt 25 is made of polyvinyl chloride, it has good waterproof and wear-resistant properties. When the rotating wheel 22 rotates, it drives the first rotating rod 24 to rotate through the transmission belt 25. When the first rotating rod 24 rotates, it drives one end of the Z-shaped connecting rotating block 27 to rotate. Since the Z-shaped connecting rotating block 27 is Z-shaped and its two ends are respectively rotatably connected to the first rotating rod 24 and the second transmission rod 26, the Z-shaped connecting rotating block 27 drives the second transmission rod 26 to rotate. The second transmission rod 26 is rotatably connected inside the square hollow block 32. At this time, the square hollow block 32 connects to the kinetic energy collection component to drive the double-layer filter component to operate.

[0049] At this time, the rotation of the second transmission rod 26 will drive the L-shaped fixed plate 37 to rotate. When the L-shaped fixed plate 37 rotates, it can drive the drive rod 38 to move. The drive rod 38 then drives the second filter screen 36 to move closer to the second transmission rod 26. Subsequently, the drive rod 38 drives the second filter screen 36 to move away from the second transmission rod 26, thereby achieving the effect of the drive rod 38 driving the second filter screen 36 to move back and forth, thus causing the second filter screen 36 to shake. At this time, the second elastic strip group 35 is elastic, and the second elastic strip group 35 will make the shaking effect of the second filter screen 36 more obvious. Thus, the water falling into the second filter screen 36 can better filter the sewage. When the second filter screen 36 shakes, it drives the second elastic strip group 35 to shake. At the same time, the first elastic strip group 33 is also elastic, and when the second filter screen 36 shakes, it drives the first filter screen 34 to shake as well.

[0050] Because the cylindrical slider 310 is slidably connected inside the grooved rod 312, when the L-shaped fixing plate 37 rotates, it synchronously drives the cylindrical slider 310 to slide on the outer wall of the arc groove plate 39. During the movement of the cylindrical slider 310, it drives the grooved rod 312 to rotate around the L-shaped fixing rod 311. The grooved rod 312 then drives the connecting rod 313 to move towards the first filter screen 34 and then in the opposite direction. The connecting rod 313 then drives the cylindrical slide rod 314 to slide on the top of the first filter screen 34. Since the side of the cylindrical slide rod 314 closest to the first filter screen 34 is fixedly connected to the cleaning strip 315, and the cleaning strip 315 is made of rubber, the cylindrical slide rod 314 then drives the cleaning strip 315 to clean the top of the first filter screen 34. The arrangement of the first filter screen 34 and the second filter screen 36 reduces the workload of wastewater filtration in the water curtain cabinet, effectively filters pollutants in the water curtain machine, reduces wastewater pollution to the environment, and automatically removes particulate matter and harmful gases accumulated in the water curtain machine, maintaining the cleanliness and stability of water quality. This improves the purification efficiency of the water curtain cabinet and avoids the situation of not cleaning the filter screens in time, effectively preventing pollutants from entering the water curtain and water tank, reducing the risk of blockage and damage, thereby extending the service life of the water curtain and equipment, improving the cleaning efficiency of the water curtain machine, reducing the need for manual cleaning, achieving centralized filtration and separation of pollutants, simplifying the maintenance and cleaning work inside the water curtain cabinet, and improving the working efficiency of the water curtain machine.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water curtain dust removal and odor removal device that prevents splashing water, comprising a water curtain machine (11) and an arc-shaped water flow plate (12), wherein the arc-shaped water flow plate (12) is disposed inside the water curtain machine (11), characterized in that: The water curtain machine (11) is internally equipped with a kinetic energy harvesting component for converting the potential energy of water flow, wherein: The kinetic energy harvesting assembly includes a fixed frame (21), which is fixedly connected to the bottom of the inner cavity of the water curtain machine (11). A rotating wheel (22) is rotatably connected to the top of the fixed frame (21). A water collection box assembly (23) is fixedly connected to the outer wall of the rotating wheel (22). A first rotating rod (24) is rotatably connected to the bottom of the fixed frame (21). A transmission belt (25) is drivingly connected between the first rotating rod (24) and the rotating wheel (22). A Z-shaped connecting rotating block (27) is rotatably connected to the end of the first rotating rod (24) away from the transmission belt (25). A second transmission rod (26) is rotatably connected to the end of the Z-shaped connecting rotating block (27) away from the first rotating rod (24). The water curtain machine (11) is equipped with a double-layer filtration assembly, wherein: The dual-layer filtration assembly includes a wastewater collection block (31), which is fixedly connected to the bottom of the inner cavity of the water curtain machine (11). A square hollow block (32) is fixedly connected to the bottom of the wastewater collection block (31). A first elastic strip group (33) is fixedly connected to the bottom of the wastewater collection block (31). A first filter screen (34) is fixedly connected to the end of the first elastic strip group (33) away from the wastewater collection block (31). A second elastic strip group (35) is fixedly connected to the outer wall of the first filter screen (34). A second filter screen (36) is fixedly connected to the end of the second elastic strip group (35) away from the first filter screen (34). An L-shaped fixing plate (37) is fixedly connected to the end of the second transmission rod (26) away from the Z-shaped connecting rotating block (27). A drive rod (38) is rotatably connected to the side of the L-shaped fixing plate (37) away from the second transmission rod (26). The end of the drive rod (38) away from the L-shaped fixing piece (37) is rotatably connected to the outer wall of the second filter screen (36). The inner wall of the square hollow block (32) is fixedly connected to an arc groove plate (39). The end of the L-shaped fixing piece (37) away from the second transmission rod (26) is fixedly connected to a cylindrical slider (310). The inner wall of the square hollow block (32) is fixedly connected to an L-shaped fixing rod (311). The end of the L-shaped fixing rod (311) away from the square hollow block (32) is rotatably connected to a grooved rod (312). The top of the grooved rod (312) is rotatably connected to a connecting rod (313). The end of the connecting rod (313) away from the grooved rod (312) is rotatably connected to a cylindrical slide rod (314). The cylindrical slide rod (314) is slidably connected to the top of the first filter screen (34). A cleaning strip (315) is provided inside the first filter screen (34).

2. The water curtain dust removal and odor removal device that prevents water splashing according to claim 1, characterized in that: The transmission belt (25) is made of polyvinyl chloride.

3. The water curtain dust removal and odor removal device that prevents water splashing according to claim 1, characterized in that: The second transmission rod (26) is rotatably connected inside the square hollow block (32).

4. The water curtain dust removal and odor removal device that prevents water splashing according to claim 1, characterized in that: The cylindrical slider (310) is slidably connected inside the grooved rod (312).

5. The water curtain dust removal and odor removal device according to claim 1, characterized in that: The cylindrical slider (310) is slidably connected to the outer wall of the arc groove disk (39) on the side away from the square hollow block (32).

6. The water curtain dust removal and odor removal device according to claim 1, characterized in that: The cylindrical slide bar (314) is fixedly connected to the cleaning strip (315) on the side near the first filter screen (34).

7. The water curtain dust removal and odor removal device that prevents water splashing according to claim 1, characterized in that: The inner wall of the sewage collection block (31) is inclined.

8. The water curtain dust removal and odor removal device according to claim 1, characterized in that: The cleaning strip (315) is made of rubber.

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