Optical filter production and processing technology

Abstract

The invention discloses an optical filter producing and processing technology, and particularly relates to the technical field of optical filter production.The technology comprises the steps that firstly, a belt conveyor conveys a feeding frame with an optical filter into a cleaning cavity on the rightmost side, secondly, an ultrasonic generator and an ultrasonic transducer are started to clean the optical filter, and thirdly, the optical filter is cleaned through a cleaning cavity on the rightmost side; the method comprises the following steps: step 1, feeding a feeding frame into a cleaning cavity distributed from right to left, step 2, moving the feeding frame into a drying cavity, and spraying cleaning liquid by a spraying head to wash the optical filter, and step 4, using a waterproof linear module II to drive the feeding frame to move to a position below an air outlet pipe for drying, so as to obtain the cleaned optical filter. According to the optical filter cleaning device, the optical filters on the feeding frames are automatically conveyed through the belt conveyor to be cleaned, the positions of the multiple feeding frames can be automatically switched, meanwhile, the optical filters move up and down in cleaning liquid, the optical filters are cleaned more cleanly after being cleaned for multiple times, manual operation is not needed, and then the cleaning efficiency of the optical filters can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical filter production, and more specifically to an optical filter production and processing technology. Background Art

[0002] A filter is an optical device whose main function is to selectively transmit or reflect light of a specific wavelength range, while absorbing or blocking light of other wavelengths. For example, in photography, a yellow filter can absorb blue light to make the photo warmer; in optical instruments, a UV filter can block ultraviolet light and protect the optical components and detectors inside the instrument from damage by ultraviolet light. Optical filters will produce dirt during the production process, and the dirt will affect the subsequent processing.

[0003] In the prior art, the optical filter is placed in a cleaning solution and rinsed with the cleaning solution. For example, the prior art publication number CN221908762U is a cleaning device for optical filter production and processing. The invention can realize the purpose of convenient automatic fixing and supporting of batch filters and real-time angle adjustment through the filter fixing angle adjustment mechanism, and can realize the purpose of convenient automatic displacement and strong washing of filters through the mobile washing mechanism.

[0004] At present, optical filters are usually cleaned with ultrasonic cleaning, and a multi-step cleaning method is set for cleaning. However, during the cleaning process, workers are required to frequently manually switch the position of the optical filters so that the optical filters are cleaned multiple times. Since a large number of optical filters are cleaned at one time, manual adjustment is time-consuming and labor-intensive, and also reduces the cleaning efficiency. Based on this, the present invention provides a filter production and processing technology with high cleaning effect and efficiency. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a filter production and processing technology, which not only automatically transports the filters on the feeding rack for cleaning through a belt conveyor, but also automatically switches the positions of multiple feeding racks, and at the same time makes the filters move up and down in the cleaning liquid. The filters are cleaner after multiple cleanings, and no manual operation is required, thereby improving the cleaning efficiency of the filters to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solution: a filter production and processing technology, the specific steps are as follows:

[0007] Step 1: First insert the feed rack with the filter between the two limit bars on the belt conveyor, and then use the belt conveyor to transport the feed rack to the rightmost cleaning chamber;

[0008] Step 2: Place a new feed rack, and turn on the ultrasonic generator and ultrasonic transducer for cleaning. At regular intervals, the belt conveyor moves the feed rack in the rightmost cleaning chamber to the cleaning chambers distributed from right to left for cleaning;

[0009] Step 3: Use a belt conveyor to move the feeding rack into the drying chamber, use a waterproof motor and a rotating rod to drive the spray rack to rotate, and use a high-pressure water pump and a spray head to spray the cleaning liquid onto the filter for washing;

[0010] Step 4: Use the waterproof electric push rod 2 to fix the feed rack and the waterproof linear module 2 together, and drive the feed rack to move left to the bottom of the air outlet pipe. Start the industrial hot air blower and the air outlet pipe to spray hot air for drying, and then open the door panel to obtain the cleaned filter.

[0011] In a preferred embodiment, the production and processing device comprises a housing, a drying chamber and a plurality of cleaning chambers are arranged in sequence inside the housing, and a feeding assembly is arranged on the top of the housing;

[0012] The present invention also includes a production and processing device, including a shell, wherein a drying chamber and a plurality of cleaning chambers are arranged in sequence inside the shell, and a feeding assembly is arranged on the top of the shell;

[0013] The feeding assembly includes a bracket, a belt conveyor is fixedly arranged inside the bracket, a feeding rack is sleeved on the belt conveyor, a plurality of clamps with filters placed thereon are clamped on the top of the feeding rack, a plurality of electric push rods are fixedly arranged on the top of the bracket, and the plurality of electric push rods are fixed to the top of the housing through the same mounting frame;

[0014] The drying chamber is provided with a spraying component and a drying component for cleaning and drying the filter.

[0015] In a preferred embodiment, an ultrasonic transducer is fixedly provided on the inner wall of one side of each cleaning chamber, and an ultrasonic generator is fixedly embedded at the front end of each cleaning chamber. The ultrasonic generator and the ultrasonic transducer cooperate to generate ultrasonic waves, which can improve the cleaning effect of the filter.

[0016] In a preferred embodiment, each clamp includes two symmetrically distributed limit bars, the feed rack is clamped between the two limit bars, and the front and rear side walls of the feed rack are in contact with the front and rear side walls of the bracket. The feed rack is fixed by the two limit bars, thereby improving the stability of the feed rack.

[0017] In a preferred embodiment, the spray assembly includes a spray rack, on which a plurality of spray heads are fixedly provided, and the spray heads are arranged to be inclined on one side close to the filter. A high-pressure water pump connected to the plurality of spray heads is fixedly provided at the rear end of the shell. In actual use, the high-pressure water pump is connected to a device for storing deionized cleaning fluid to achieve the function of spray cleaning.

[0018] In a preferred embodiment, a rotating rod is fixedly provided on one side of the spray rack close to the cleaning chamber, the rotating rod is movably provided on the inner wall of the drying chamber, and a waterproof motor for driving the rotating rod to rotate is fixedly provided at the rear end of the rotating rod. The rotating rod is driven by the waterproof motor to drive the spray rack to rotate, thereby storing the spray rack and preventing the spray rack from obstructing the placement of the feeding rack.

[0019] In a preferred embodiment, the drying component includes a top plate, a linear module 1 is fixedly provided on both the front and rear sides of the top plate, the bottom ends of the two linear modules 1 are fixed to the top of the shell, and the top plate and the two linear modules 1 are both located on one side of the bracket, a plurality of air outlet pipes are fixedly provided on the bottom of the top plate, an industrial hot air blower is fixedly provided on the side of the rear end of the shell away from the high-pressure water pump 1, the industrial hot air blower is connected to the plurality of air outlet pipes, and the industrial hot air blower and the air outlet pipe cooperate to blow out hot air to automatically dry the filter.

[0020] In a preferred embodiment, waterproof linear modules 2 are fixedly embedded on the inner walls on both sides of the front and rear of the drying chamber, and embedding grooves are provided on the sides close to each other of the two waterproof linear modules 2. The feeding rack is arranged in the embedding grooves, and waterproof electric push rods 2 are fixedly embedded on the inner walls on both sides of the two embedding grooves. Slots are provided on the inner walls on both sides of the feeding rack, and the piston rod of the waterproof electric push rod 2 is inserted in the slots. The feeding rack and the waterproof linear module 2 are connected by means of the waterproof motor push rod 2 being plugged into the slots, so that the feeding rack can be automatically moved for drying and unloading.

[0021] In a preferred embodiment, two wastewater collection tanks are fixedly provided at the bottom of the shell, and filters are fixedly provided inside the two wastewater collection tanks, one of the filters is connected to high-pressure water pump 1, and the other filter is connected to high-pressure water pump 2, and the high-pressure water pump 2 is connected to the interior of multiple cleaning chambers through multiple hoses, and the high-pressure water pump 2 is fixed at the rear end of the wastewater collection tank, and is used to re-deliver the cleaning liquid filtered by the filter to the spray head and the cleaning chamber.

[0022] In a preferred embodiment, a discharge port is provided on one side of the housing, a door panel is hinged inside the discharge port, and the dried optical filter can be taken out by opening the door panel.

[0023] Technical effects and advantages of the present invention:

[0024] 1. The present invention not only automatically transports the filter on the feeding rack for cleaning through the belt conveyor, but also automatically switches the positions of multiple feeding racks, and at the same time makes the filter move up and down in the cleaning liquid. The filter is cleaned more frequently without manual operation, thereby improving the cleaning efficiency of the filter;

[0025] 2. The spray rack is driven to rotate by the waterproof motor and the rotating rod, so that the position of the spray rack can be automatically adjusted, and the deionized spray liquid is sprayed onto the filter by the spray head, which can further improve the cleaning effect of the filter;

[0026] 3. By plugging the second electric push rod into the slot, the feed rack and the waterproof linear module are fixed together and the feed rack is driven to move left. With the help of the industrial hot air blower and the exhaust pipe, hot air is sprayed to dry the filter after spray cleaning, which is convenient for subsequent production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 3 It is a side view of the overall structure of the present invention;

[0030] Figure 4 A cross-sectional view of a housing and a wastewater collection box of the present invention;

[0031] Figure 5 for Figure 4 The main view of

[0032] Figure 6 A partial cross-sectional view of a housing of the present invention;

[0033] Figure 7 is a cross-sectional view of a housing of the present invention;

[0034] Figure 8 A bottom view of the drying assembly of the present invention;

[0035] Fig. 9 It is a cross-sectional view of the waterproof linear module 2 and the feeding rack of the present invention.

[0036] The reference numerals are: 1, housing; 2, drying chamber; 3, cleaning chamber; 4, feeding assembly; 5, spray assembly; 6, drying assembly; 7, ultrasonic transducer; 8, ultrasonic generator; 9, waterproof linear module 2; 10, embedded groove; 11, waterproof electric push rod 2; 12, slot; 13, wastewater collection box; 14, filter; 15, high-pressure water pump 2; 16, door panel;

[0037] 401, bracket; 402, belt conveyor; 403, feeding rack; 404, clamp; 4041, limit strip; 405, electric push rod 1; 406, mounting frame;

[0038] 501, spray rack; 502, spray head; 503, high pressure water pump 1; 504, rotating rod; 505, waterproof motor;

[0039] 601. top plate; 602. linear module 1; 603. air outlet pipe; 604. industrial hot air blower. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The present invention provides a filter production process, the specific steps are as follows:

[0042] Step 1: first insert the feeding rack 403 equipped with the optical filter between the two limit bars 4041 on the belt conveyor 402, and then use the belt conveyor 402 to convey the feeding rack 403 to the rightmost cleaning chamber 3;

[0043] Step 2: Place a new feed rack 403, and turn on the ultrasonic generator 8 and the ultrasonic transducer 7 for cleaning. At regular intervals, the belt conveyor 402 moves the feed rack 403 in the rightmost cleaning chamber 3 to the cleaning chambers 3 distributed from right to left for cleaning;

[0044] Step 3: Use the belt conveyor 402 to move the feeding rack 403 into the drying chamber 2, use the waterproof motor 505 and the rotating rod 504 to drive the spray rack 501 to rotate, and use the high-pressure water pump 503 and the spray head 502 to spray the cleaning liquid on the filter for washing;

[0045] Step 4: Use the waterproof electric push rod 11 to fix the feed rack 403 and the waterproof linear module 9 together, and drive the feed rack 403 to move left to below the air outlet pipe 603, start the industrial hot air blower 604 and the air outlet pipe 603 to spray hot air for drying, and then open the door panel 16 to obtain the cleaned filter.

[0046] Refer to the instruction manual Figure 1-9 The production and processing device for the above-mentioned filter production and processing technology comprises a housing 1, wherein a drying chamber 2 and a plurality of cleaning chambers 3 are sequentially arranged inside the housing 1;

[0047] A feeding assembly 4 is provided on the top of the shell 1, and the feeding assembly 4 includes a bracket 401. A belt conveyor 402 is fixedly provided inside the bracket 401. A feeding rack 403 is sleeved on the belt conveyor 402. A plurality of clamps 404 with filters placed thereon are clamped on the top of the feeding rack 403. Specifically, each clamp 404 includes two symmetrically distributed limiting bars 4041. The feeding rack 403 is clamped between the two limiting bars 4041, and the front and rear side walls of the feeding rack 403 are in contact with the front and rear side walls of the bracket 401. The feeding rack 403 is fixed by the two limiting bars 4041, so as to improve the stability of the feeding rack 403. A plurality of electric push rods 405 are fixedly provided on the top of the bracket 401, and the plurality of electric push rods 405 are fixed to the top of the shell 1 through the same mounting frame 406.

[0048] In addition, an ultrasonic transducer 7 is fixedly provided on the inner wall of one side of each cleaning cavity 3, and an ultrasonic generator 8 is fixedly embedded at the front end of each cleaning cavity 3. The ultrasonic generator 8 and the ultrasonic transducer 7 cooperate to generate ultrasonic waves, which can improve the cleaning effect of the filter.

[0049] When in use, the staff first places a feed rack 403 equipped with a filter on the belt conveyor 402, and uses the belt conveyor 402 to drive the feed rack 403 to move to the left, and then uses the electric push rod to extend so that the belt conveyor 402 and the filter on the feed rack 403 fall into the deionized cleaning liquid, and then uses the ultrasonic generator 8 and the ultrasonic transducer 7 to vibrate in the deionized cleaning liquid to generate cavitation. The tiny cavitation bubbles burst when they come into contact with the pollutants on the surface of the substrate, generating a strong impact force to remove the pollutants;

[0050] After cleaning for a period of time, the belt conveyor 402 is first used to drive the filter in the cleaning chamber 3 to move upward, and then the belt conveyor 402 drives the feeding rack 403 to move left to another cleaning chamber 3, and at the same time, the new filter is conveyed to the first cleaning chamber 3. This is repeated, and the filter is moved to the drying chamber 2 after multiple cleanings. This can greatly improve the cleaning effect of the filter, and there is no need to frequently manually adjust the position of the filter, which is more time-saving and labor-saving to use.

[0051] Refer to the instruction manual Figure 1-9 The drying chamber 2 is provided with a spray assembly 5 and a drying assembly 6 for cleaning and drying the optical filter. The spray assembly 5 includes a spray rack 501, on which a plurality of spray heads 502 are fixedly provided, and the spray heads 502 are arranged to be inclined near the optical filter. A high-pressure water pump 503 connected to the plurality of spray heads 502 is fixedly provided at the rear end of the housing 1. When in actual use, the high-pressure water pump 503 is connected to a device for storing deionized cleaning liquid to realize the function of spray cleaning.

[0052] In addition, a rotating rod 504 is fixedly provided on the side of the spray rack 501 close to the cleaning chamber 3. The rotating rod 504 is movably provided on the inner wall of the drying chamber 2, and a waterproof motor 505 is fixedly provided at the rear end of the rotating rod 504 for driving the rotating rod 504 to rotate. The rotating rod 504 is driven by the waterproof motor 505 to drive the spray rack 501 to rotate, so that the spray rack 501 can be stored, and the spray rack 501 is prevented from obstructing the placement of the feeding rack 403.

[0053] The drying assembly 6 includes a top plate 601, and linear modules 602 are fixedly provided on both the front and rear sides of the top plate 601, and the bottom ends of the two linear modules 602 are fixed on the top of the shell 1, and the top plate 601 and the two linear modules 602 are both located on one side of the bracket 401, and a plurality of air outlet pipes 603 are fixedly provided on the bottom of the top plate 601, and an industrial hot air blower 604 is fixedly provided on the rear end of the shell 1 away from the high-pressure water pump 503, and the industrial hot air blower 604 is connected to the plurality of air outlet pipes 603, and the industrial hot air blower 604 cooperates with the air outlet pipes 603 to blow out hot air to automatically dry the filter;

[0054] Moreover, a material discharge port is provided on one side of the housing 1, and a door panel 16 is hinged inside the material discharge port. The dried optical filter can be taken out by opening the door panel 16;

[0055] The inner walls on both sides of the drying chamber 2 are fixedly embedded with waterproof linear modules 29, and the two waterproof linear modules 29 are provided with embedding grooves 10 on the sides close to each other. The feeding rack 403 is arranged in the embedding grooves 10, and the inner walls on both sides of the two embedding grooves 10 are fixedly embedded with waterproof electric push rods 2 11. The inner walls on both sides of the feeding rack 403 are provided with slots 12, and the piston rods of the waterproof electric push rods 2 11 are inserted in the slots 12. The feeding rack 403 is connected to the waterproof linear module 2 9 by plugging the push rod 2 of the waterproof motor 505 into the slots 12, so that the feeding rack 403 can be automatically moved for drying and unloading.

[0056] When the filter is moved into the drying chamber 2, the waterproof motor 505 is used to drive the rotating rod 504 to drive the spray rack 501 to rotate, and the belt conveyor 402 is driven up and down by the electric push rod to make the spray head 502 fully spray the deionized spray liquid onto the cleaned filter, so as to further improve the cleaning effect of the filter. After the spraying is completed, the spray rack 501 is first controlled to flip and fit the inner wall of the drying chamber 2, and then the electric push rod 2 is inserted into the slot 12 to fix the feeding rack 403 and the waterproof linear module together. At the same time, the belt conveyor 402 is controlled to move downward and separate from the feeding rack 403, and then the waterproof linear module 2 9 is used to drive the feeding rack 403 to move to the left side of the drying chamber 2, and the industrial hot air blower 604 and the exhaust pipe 603 are used to spray hot air to dry the filter after spray cleaning, and finally the door panel 16 on the left side of the shell 1 is opened to take out the feeding rack 403.

[0057] Refer to the instruction manual Figure 1-5 Two wastewater collection boxes 13 are fixedly provided at the bottom of the shell 1, and filters 14 are fixedly provided inside the two wastewater collection boxes 13. One of the filters 14 is connected to the high-pressure water pump 1 503, and the other filter 14 is connected to the high-pressure water pump 2 15. The high-pressure water pump 2 15 is connected to the inside of multiple cleaning chambers 3 through multiple hoses, and the high-pressure water pump 2 15 is fixed at the rear end of the wastewater collection box 13.

[0058] The deionized cleaning liquid in the drying chamber 2 and the deionized cleaning liquid in the four cleaning chambers 3 are collected by two wastewater collection boxes 13, and the wastewater is filtered by a wall-mounted filter 14 and then transported back to the spray head 502 and the cleaning chamber 3, thereby realizing the recycling of the deionized cleaning liquid and reducing the cost of use.

[0059] In actual use, a control box can be installed on the shell 1 to control the belt conveyor 402, electric push rod 405, high-pressure water pump 503, waterproof motor 505, linear module 602, industrial hot air blower 604, ultrasonic transducer 7, ultrasonic generator 8, waterproof linear module 10, waterproof electric push rod 11, filter 14, high-pressure water pump 15 in the present invention, and a battery is arranged in the control box to increase the electric energy. The above technologies are all existing commonly used technologies and will not be further elaborated here.

[0060] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter production process, characterized in that: The specific steps are as follows: Step 1: first insert the feeding rack (403) equipped with the optical filter between the two limit bars (4041) on the belt conveyor (402), and then use the belt conveyor (402) to transport the feeding rack (403) to the rightmost cleaning chamber (3); Step 2: Place a new feeding rack (403) and turn on the ultrasonic generator (8) and the ultrasonic transducer (7) for cleaning. At regular intervals, the belt conveyor (402) moves the feeding rack (403) in the rightmost cleaning chamber (3) to the cleaning chambers (3) distributed from right to left for cleaning; Step 3: Use the belt conveyor (402) to move the feeding rack (403) into the drying chamber (2), use the waterproof motor (505) and the rotating rod (504) to drive the spray rack (501) to rotate, and use the high-pressure water pump (503) and the spray head (502) to spray the cleaning liquid onto the filter for washing; Step 4: Use the waterproof electric push rod 2 (11) to fix the feed rack (403) and the waterproof linear module 2 (9) together, and drive the feed rack (403) to move left to below the air outlet pipe (603), start the industrial hot air blower (604) and the air outlet pipe (603) to spray hot air for drying, and then open the door panel (16) to obtain the cleaned filter.

2. The optical filter production process according to claim 1, characterized in that: The production and processing device used in the optical filter production and processing technology comprises a housing (1), wherein a drying chamber (2) and a plurality of cleaning chambers (3) are arranged in sequence inside the housing (1), and a feeding assembly (4) is arranged on the top of the housing (1); The feeding assembly (4) comprises a bracket (401), a belt conveyor (402) is fixedly arranged inside the bracket (401), a feeding rack (403) is sleeved on the belt conveyor (402), a plurality of clamps (404) on which filters are placed are clamped on the top of the feeding rack (403), a plurality of electric push rods (405) are fixedly arranged on the top of the bracket (401), and the plurality of electric push rods (405) are fixed to the top of the housing (1) via a same mounting frame (406); The drying chamber (2) is provided with a spraying component (5) and a drying component (6) for cleaning and drying the optical filter.

3. The optical filter production process according to claim 2, characterized in that: An ultrasonic transducer (7) is fixedly provided on the inner wall of one side of each cleaning cavity (3), and an ultrasonic generator (8) is fixedly embedded at the front end of each cleaning cavity (3).

4. The optical filter production process according to claim 2, characterized in that: Each clamp (404) comprises two symmetrically distributed limiting bars (4041), the feeding rack (403) is clamped between the two limiting bars (4041), and the front and rear side walls of the feeding rack (403) are in contact with the front and rear side walls of the bracket (401).

5. The optical filter production process according to claim 2, characterized in that: The spray assembly (5) comprises a spray frame (501), on which a plurality of spray heads (502) are fixedly provided, and the spray heads (502) are arranged to be inclined on one side close to the filter, and a high-pressure water pump (503) connected to the plurality of spray heads (502) is fixedly provided at the rear end of the housing (1).

6. The optical filter production process according to claim 5, characterized in that: A rotating rod (504) is fixedly provided on one side of the spray rack (501) close to the cleaning chamber (3); the rotating rod (504) is movably arranged on the inner wall of the drying chamber (2); and a waterproof motor (505) is fixedly provided at the rear end of the rotating rod (504) for driving the rotating rod (504) to rotate.

7. The optical filter production process according to claim 5, characterized in that: The drying component (6) comprises a top plate (601), and linear modules (602) are fixedly provided on both the front and rear sides of the top plate (601), and the bottom ends of the two linear modules (602) are fixed on the top of the shell (1), and the top plate (601) and the two linear modules (602) are both located on one side of the bracket (401), and a plurality of air outlet pipes (603) are fixedly provided on the bottom of the top plate (601), and an industrial hot air blower (604) is fixedly provided on the side of the rear end of the shell (1) away from the high-pressure water pump (503), and the industrial hot air blower (604) is connected to the plurality of air outlet pipes (603).

8. The optical filter production process according to claim 2, characterized in that: The inner walls on both sides of the drying chamber (2) are fixedly embedded with waterproof linear modules (9), and the two waterproof linear modules (9) are provided with embedded grooves (10) on the sides close to each other. The feeding rack (403) is arranged in the embedded grooves (10), and the inner walls on both sides of the two embedded grooves (10) are fixedly embedded with waterproof electric push rods (11), and the inner walls on both sides of the feeding rack (403) are provided with slots (12), and the piston rods of the waterproof electric push rods (11) are inserted into the slots (12).

9. The optical filter production process according to claim 5, characterized in that: Two wastewater collection boxes (13) are fixedly provided at the bottom of the housing (1), and filters (14) are fixedly provided inside the two wastewater collection boxes (13), one of the filters (14) is connected to a high-pressure water pump (503), and the other filter (14) is connected to a high-pressure water pump (15), and the high-pressure water pump (15) is connected to the inside of a plurality of cleaning chambers (3) through a plurality of hoses, and the high-pressure water pump (15) is fixed at the rear end of the wastewater collection box (13).

10. The optical filter production process according to claim 1, characterized in that: A material discharge opening is provided on one side of the shell (1), and a door panel (16) is hingedly connected inside the material discharge opening.

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