Clean room return air inlet structure capable of filtering

Abstract

The invention discloses a clean room return air inlet structure capable of filtering, and relates to the technical field of clean rooms. According to the clean room return air inlet structure capable of conducting filtering, through cooperation of the sealing frame and the annular limiting frame, air filtering treatment can be achieved through a filtering plate in the sealing frame during use, and after the filtering plate reaches the service cycle, the base frame and the filtering plate can be driven to rotate in the annular limiting frame through operation of a driving shaft; and compared with traditional filtering equipment, the filtering equipment has the advantages that the filtering effect can be ensured, and the maintenance convenience of the equipment is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of clean rooms, and specifically to a clean room return air outlet structure that can perform filtration. Background Art

[0002] A clean room refers to a relatively airtight space in which parameters such as air cleanliness, temperature, humidity, pressure, and noise are controlled as required; referring to Chinese Patent, the "Clean Room Structure and Clean Room Purification System" with the publication number: "CN113654156B", this patent points out that the dust in the clean room is basically concentrated at the return air position, resulting in the dust in some local areas of the clean room exceeding the standard value, which is not conducive to the cleanliness of the clean room; however, this device still has the problem that it is not convenient to maintain dust removal in the form of a filter. For this reason, we propose a clean room return air outlet structure that can perform filtration to solve the above problems. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a clean room return air outlet structure that can perform filtration, solving the problems raised in the above background art.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A clean room return air outlet structure that can perform filtration, including a return air outlet body, with exhaust slots opened on the side of the return air outlet body for discharging the filtered air into the clean room;

[0005] A sealing frame is fixedly installed on the top of the return air outlet body, and a filter plate is slidably connected inside the sealing frame. Voice coil motors are fixedly installed around the bottom of the sealing frame, and the output ends of the voice coil motors are all connected to bottom support plates for supporting the filter plate;

[0006] A drive shaft is rotatably connected inside the return air outlet body. A plurality of limiting rods are fixed on the outer side of the drive shaft. An outer sleeve rod is slidably sleeved on the outer side of the limiting rod. A support spring is fixed between the end of the drive shaft and the corresponding outer sleeve rod. The ends of the corresponding two outer sleeve rods are fixedly connected to a base frame, and the filter plate is fixedly installed on the outer side of the base frame for driving the base frame and the filter plate to rotate inside the return air outlet body through the rotation of the drive shaft to complete the replacement operation of the filter plate inside the sealing frame;

[0007] An annular limiting frame is fixedly installed inside the return air outlet body, which is coaxial with the drive shaft. A plurality of arc-shaped slots are opened inside the annular limiting frame, and the arc-shaped slots are adapted to the straight line of the filter plate. An arc-shaped limiting piece is fixedly installed on the outer side of the annular limiting frame for allowing the filter plate to enter the inside of the annular limiting frame through the arc-shaped slot along the arc-shaped limiting piece when the filter plate rotates. Arc-shaped blocking rods are fixedly installed inside the corresponding arc-shaped slots for blocking the filter plate.

[0008] Preferably, a plurality of limiting flappers are rotatably connected inside the annular limiting frame, and the limiting flappers are used to separate the corresponding filter plates.

[0009] Preferably, a driving motor is fixedly installed on the outer side of the air return port body, the end of the driving shaft passes through the air return port body, and a coupling is provided between the output end of the driving motor and the end of the driving shaft to drive the driving shaft to operate inside the air return port body.

[0010] Preferably, pressure monitors are fixedly installed at the ends of a plurality of bottom support plates, and the pressure monitors are in contact with the base frame to monitor the filtering effect of the filter plates.

[0011] Preferably, sealing sheets are fixedly installed between both ends of the annular limiting frame and the inside of the air return port body.

[0012] Preferably, a cleaning assembly is provided inside the air return port body for cleaning the used filter plates. The cleaning assembly includes a cleaning frame rotatably connected inside the air return port body. A plurality of cleaning pipes are rotatably connected inside the cleaning frame. Cleaning heads are fixedly installed at the ends of the plurality of cleaning pipes, and a plurality of flushing nozzles are fixedly installed inside the cleaning heads. The flushing nozzles are used to direct the cleaning water towards the filter plates to achieve the cleaning process.

[0013] Preferably, a transmission belt is rotatably connected between the plurality of cleaning pipes to drive the plurality of cleaning pipes to rotate and achieve the flushing process of the filter plates.

[0014] Preferably, a limiting shaft is rotatably connected to the outside of the cleaning frame, the limiting shaft is rotatably connected to the air return port body, and an adjusting cylinder body is fixedly installed inside the air return port body. The piston end of the adjusting cylinder body is rotatably connected to the cleaning frame to adjust the inclination angle of the cleaning frame.

[0015] Preferably, a collecting plate frame is fixedly installed at the inner bottom of the air return port body, and the collecting plate frame is used to collect the flushing impurities.

[0016] Preferably, a drying module is fixedly installed inside the air return port body, and the drying module is used to dry the rinsed filter plates. A one-way exhaust valve is fixedly installed inside the air return port body.

[0017] The present invention provides a clean room air return port structure that can perform filtration. Compared with the prior art, it has the following beneficial effects:

[0018] (1) The filterable clean room air return opening structure can, through the cooperation of the sealing frame and the annular limiting frame, filter the air through the filter plate inside the sealing frame during use. When the filter plate reaches the service life, by running the drive shaft, it can drive the base frame and the filter plate to rotate inside the annular limiting frame to complete the automatic replacement of the filter plate. Compared with traditional filtering equipment, it can ensure the filtering effect and further improve the maintenance convenience of the equipment.

[0019] (2) The filterable clean room air return opening structure, through the setting of the cleaning component, when the used filter plate rotates with the base frame to the inside of the annular limiting frame, at this time, the filter plate can be blocked through the cooperation of the arc-shaped stop rod, and by spraying the cleaning water through multiple cleaning ends and flushing nozzles, the automatic flushing of the filter plate can be completed, and then the drying module is used to dry the filter plate, further improving the use convenience of the equipment. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the sectional structure of the air return opening body of the present invention;

[0022] Figure 3 For the present invention Figure 2 Schematic side view structure;

[0023] Figure 4 For the present invention Figure 3 Enlarged structure schematic diagram at A in the present invention;

[0024] Figure 5 It is a schematic diagram of the sectional structure of the sealing frame of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged structure schematic diagram at B in the present invention;

[0026] Figure 7 It is a schematic diagram of the annular limiting frame structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the sectional structure of the filter plate of the present invention;

[0028] Figure 9 It is a schematic diagram of the cleaning frame structure of the present invention;

[0029] Figure 10 For the present invention Figure 9 Enlarged structure schematic diagram at C in the present invention.

[0030] In the figure: 1. Return air outlet body; 101. Exhaust slot; 102. Driving motor; 2. Sealing frame; 3. Filter plate; 4. Annular limiting frame; 401. Arc-shaped slot; 4011. Arc-shaped baffle; 402. Limiting flap; 403. Arc-shaped limiting piece; 5. Driving shaft; 501. Limiting rod; 6. Outer sleeve rod; 601. Support spring; 7. Base frame; 8. Cleaning frame; 801. Limiting shaft; 802. Adjusting cylinder block; 9. Cleaning pipe; 901. Cleaning end; 9011. Flushing nozzle; 902. Transmission belt; 10. Collection plate frame; 11. Drying module; 12. One-way exhaust valve; 13. Voice coil motor; 1301. Bottom support plate. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 - 10 , the present invention provides two technical solutions, specifically including the following embodiments:

[0033] Embodiment 1:

[0034] In the embodiment of the present invention, a filterable clean room return air outlet structure includes a return air outlet body 1. An exhaust slot 101 is provided on the side of the return air outlet body 1 for discharging the filtered air into the clean room.

[0035] Specifically, first, the return air outlet body 1 is assembled into the clean room. As the negative pressure equipment in the clean room operates, it can make the external air enter the interior of the return air outlet body 1, and then enter the interior of the clean room through the exhaust slot 101.

[0036] A sealing frame 2 is fixedly installed on the top of the return air outlet body 1, and a filter plate 3 is slidably connected inside the sealing frame 2. Voice coil motors 13 are fixedly installed on the four peripheries of the bottom of the sealing frame 2, and the output ends of the voice coil motors 13 are all connected with bottom support plates 1301, and the bottom support plates 1301 are used to support the filter plate 3.

[0037] A drive shaft 5 is rotatably connected inside the air return opening body 1. A plurality of limiting rods 501 are fixed on the outer side of the drive shaft 5. An outer sleeve rod 6 is slidably sleeved on the outer side of the limiting rod 501. A support spring 601 is fixed between the end of the drive shaft 5 and the corresponding outer sleeve rod 6. The ends of the corresponding two outer sleeve rods 6 are fixedly connected to a base frame 7. A filter plate 3 is fixedly installed on the outer side of the base frame 7, and is used to drive the base frame 7 and the filter plate 3 to rotate inside the air return opening body 1 through the rotation of the drive shaft 5, so as to complete the replacement operation of the filter plate 3 inside the sealing frame 2;

[0038] Specifically, there are a plurality of filter plates 3. The filter plate 3 located inside the sealing frame 2 is in use, so that the external air can pass through the filter plate 3 inside the sealing frame 2 for filtration, and then enter the air return opening body 1 and be discharged to the clean room through the exhaust slot 101;

[0039] Through the bottom support plates 1301 at the ends of the plurality of voice coil motors 13, the support for the filter plate 3 can be completed. Specifically, the bottom support plates 1301 are inclinedly installed. The initial positions of the filter plate 3 and the base frame 7 are located below the sealing frame 2, and the bottom of the filter plate 3 is flush with the bottom of the sealing frame 2. At this time, by driving the bottom support plate 1301 to extend through the voice coil motor 13, the filter plate 3 and the base frame 7 can be pressed into the sealing frame 2. When replacing the filter plate 3, as the voice coil motor 13 drives the bottom support plate 1301 to reset, the filter plate 3 and the base frame 7 can be separated from the sealing frame 2, and then by rotating the drive shaft 5, the base frame 7 and the filter plate 3 can be driven to rotate through the cooperation of the limiting rod 501 and the outer sleeve rod 6, realizing the automatic replacement of the filter plate 3;

[0040] Specifically, when the voice coil motor 13 drives the bottom support plate 1301 to extend and press the filter plate 3 and the base frame 7 into the sealing frame 2, at this time, the limiting rod 501 and the corresponding outer sleeve rod 6 extend, and the support spring 601 is stretched. Until the voice coil motor 13 drives the bottom support plate 1301 to reset, the filter plate 3 and the base frame 7 can be separated from the sealing frame 2 by the restoring force of the support spring 601;

[0041] An annular limiting frame 4 is fixedly installed inside the air return opening body 1. The annular limiting frame 4 is coaxial with the drive shaft 5, and a plurality of arc-shaped notches 401 are opened inside the annular limiting frame 4. The arc-shaped notches 401 are adapted to the straight line of the filter plate 3, and an arc-shaped limiting piece 403 is fixedly installed on the outer side of the annular limiting frame 4, which is used to enable the filter plate 3 to enter the annular limiting frame 4 through the arc-shaped notch 401 along the arc-shaped limiting piece 403 when the filter plate 3 rotates. An arc-shaped stop rod 4011 is fixedly installed inside the corresponding arc-shaped notch 401, which is used to block the filter plate 3;

[0042] Specifically, when the drive shaft 5 drives the base frame 7 and the filter plate 3 to rotate, the filter plate 3 separated from the sealing frame 2 can contact the arc-shaped limiting piece 403 and enter the inside of the annular limiting frame 4 through the cooperation of the arc-shaped limiting piece 403. The filter plate 3 entering the inside of the annular limiting frame 4 can be blocked by the arc-shaped stop rod 4011 until the filter plate 3 rotates to the lower part of the sealing frame 2 again and can be ejected through the arc-shaped notch 401;

[0043] A plurality of limiting flanges 402 are rotatably connected inside the annular limiting frame 4, and the limiting flanges 402 are used to separate the corresponding filter plates 3;

[0044] A drive motor 102 is fixedly installed on the outer side of the air return port body 1. The end of the drive shaft 5 passes through the air return port body 1, and a coupling is provided between the output end of the drive motor 102 and the end of the drive shaft 5 to drive the drive shaft 5 to operate inside the air return port body 1;

[0045] Pressure monitors are fixedly installed at the ends of a plurality of bottom support plates 1301. The pressure monitors are in close contact with the base frame 7 and are used to monitor the filtering effect of the filter plate 3;

[0046] The pressure monitor is a conventional device and will not be elaborated here;

[0047] Through the setting of the pressure monitor, as the use time of the filter plate 3 increases, the impurities adhered to its outer surface increase, so that the pressure value monitored by the pressure monitor increases. Maintenance personnel can judge the use condition of the filter plate 3 through the pressure value, and then complete the timely replacement of the filter plate 3;

[0048] Sealing sheets are fixedly installed between both ends of the annular limiting frame 4 and the inside of the air return port body 1.

[0049] Embodiment 2: Based on Embodiment 1, a clean room air return port structure capable of filtering includes an air return port body 1. An exhaust slot 101 is provided on the side of the air return port body 1 for discharging the filtered air into the clean room;

[0050] Specifically, first, the air return port body 1 is assembled into the clean room. As the negative pressure equipment in the clean room operates, the external air can enter the inside of the air return port body 1 and then enter the clean room through the exhaust slot 101;

[0051] A sealing frame 2 is fixedly installed on the top of the air return port body 1, and a filter plate 3 is slidably connected inside the sealing frame 2. Voice coil motors 13 are fixedly installed around the bottom of the sealing frame 2, and the output ends of the voice coil motors 13 are all connected with bottom support plates 1301, and the bottom support plates 1301 are used to support the filter plate 3;

[0052] A drive shaft 5 is rotatably connected inside the air return opening body 1. A plurality of limiting rods 501 are fixed on the outer side of the drive shaft 5. An outer sleeve rod 6 is slidably sleeved on the outer side of the limiting rod 501. A support spring 601 is fixed between the end of the drive shaft 5 and the corresponding outer sleeve rod 6. The ends of the corresponding two outer sleeve rods 6 are fixedly connected to a base frame 7. A filter plate 3 is fixedly installed on the outer side of the base frame 7, and is used to drive the base frame 7 and the filter plate 3 to rotate inside the air return opening body 1 through the rotation of the drive shaft 5, so as to complete the replacement operation of the filter plate 3 inside the sealing frame 2;

[0053] Specifically, there are a plurality of filter plates 3. The filter plate 3 located inside the sealing frame 2 is in use, so that the external air can be filtered through the filter plate 3 inside the sealing frame 2, and then enter the air return opening body 1 and be discharged to the clean room through the exhaust slot 101;

[0054] Through the bottom support plates 1301 at the ends of the plurality of voice coil motors 13, the support for the filter plate 3 can be completed. Specifically, the bottom support plates 1301 are obliquely installed. The initial positions of the filter plate 3 and the base frame 7 are located below the sealing frame 2, and the bottom of the filter plate 3 is flush with the bottom of the sealing frame 2. At this time, by driving the bottom support plate 1301 to extend through the voice coil motor 13, the filter plate 3 and the base frame 7 can be pressed into the sealing frame 2. When replacing the filter plate 3, as the voice coil motor 13 drives the bottom support plate 1301 to reset, the filter plate 3 and the base frame 7 can be separated from the sealing frame 2, and then by rotating the drive shaft 5, the base frame 7 and the filter plate 3 can be driven to rotate through the cooperation of the limiting rod 501 and the outer sleeve rod 6, realizing the automatic replacement of the filter plate 3;

[0055] Specifically, when the voice coil motor 13 drives the bottom support plate 1301 to extend and press the filter plate 3 and the base frame 7 into the sealing frame 2, at this time, the limiting rod 501 and the corresponding outer sleeve rod 6 extend, and the support spring 601 is stretched until the voice coil motor 13 drives the bottom support plate 1301 to reset, and the filter plate 3 and the base frame 7 can be separated from the sealing frame 2 by the restoring force of the support spring 601;

[0056] An annular limiting frame 4 is fixedly installed inside the air return opening body 1. The annular limiting frame 4 is coaxial with the drive shaft 5, and a plurality of arc-shaped notches 401 are opened inside the annular limiting frame 4. The arc-shaped notches 401 are adapted to the straight line of the filter plate 3, and an arc-shaped limiting piece 403 is fixedly installed on the outer side of the annular limiting frame 4, which is used to enable the filter plate 3 to enter the annular limiting frame 4 through the arc-shaped notch 401 along the arc-shaped limiting piece 403 when the filter plate 3 rotates. An arc-shaped blocking rod 4011 is fixedly installed inside the corresponding arc-shaped notch 401, which is used to block the filter plate 3;

[0057] Specifically, when the drive shaft 5 drives the base frame 7 and the filter plate 3 to rotate, the filter plate 3 separated from the sealing frame 2 can contact the arc-shaped limiting piece 403 and enter the inside of the annular limiting frame 4 through the cooperation of the arc-shaped limiting piece 403. The filter plate 3 entering the inside of the annular limiting frame 4 can be blocked by the arc-shaped baffle 4011 until the filter plate 3 rotates to the lower part of the sealing frame 2 again and can be ejected through the arc-shaped notch 401.

[0058] A plurality of limiting flanges 402 are rotatably connected inside the annular limiting frame 4, and the limiting flanges 402 are used to separate the corresponding filter plates 3.

[0059] A driving motor 102 is fixedly installed on the outer side of the air return port body 1. The end of the drive shaft 5 passes through the air return port body 1, and a coupling is provided between the output end of the driving motor 102 and the end of the drive shaft 5 to drive the drive shaft 5 to operate inside the air return port body 1.

[0060] Pressure monitors are fixedly installed at the ends of a plurality of bottom support plates 1301. The pressure monitors are in close contact with the base frame 7 and are used to monitor the filtering effect of the filter plate 3.

[0061] The pressure monitor is an existing device and will not be elaborated here.

[0062] Through the setting of the pressure monitor, as the use time of the filter plate 3 increases, the impurities adhering to its outer surface increase, resulting in an increase in the pressure value monitored by the pressure monitor. Maintenance personnel can judge the use condition of the filter plate 3 through the pressure value and then complete the timely replacement of the filter plate 3.

[0063] Sealing sheets are fixedly installed between both ends of the annular limiting frame 4 and the inside of the air return port body 1.

[0064] A cleaning assembly is provided inside the air return port body 1 for cleaning the used filter plate 3. The cleaning assembly includes a cleaning frame 8. The cleaning frame 8 is rotatably connected inside the air return port body 1. A plurality of cleaning pipes 9 are rotatably connected inside the cleaning frame 8. Cleaning heads 901 are fixedly installed at the ends of the plurality of cleaning pipes 9. A plurality of flushing nozzles 9011 are fixedly installed inside the cleaning heads 901. The flushing nozzles 9011 are used to spray cleaning water towards the filter plate 3 to achieve cleaning.

[0065] When the used filter plate 3 rotates to the inside of the annular limiting frame 4 along with the base frame 7, at this time, the filter plate 3 can be blocked through the cooperation of the arc-shaped baffle 4011, and by spraying the cleaning water through the plurality of cleaning heads 901 and the flushing nozzles 9011, the automatic flushing of the filter plate 3 can be completed.

[0066] Specifically, during the flushing process, through the cooperation of the arc-shaped limiting piece 403, the blocking of the cleaning water can be completed.

[0067] Specifically, the flushing nozzle 9011 is an existing device and will not be elaborated here;

[0068] The cleaning frame 8 is hollow and is used to connect to an external negative pressure device to achieve the conveyance of cleaning water;

[0069] A transmission belt 902 is rotatably connected between multiple cleaning pipes 9 and is used to drive the multiple cleaning pipes 9 to rotate, so as to achieve the flushing treatment of the filter plate 3;

[0070] Specifically, the transmission belt 902 is an existing chain and sprocket structure. The sprocket is sleeved on the outside of the cleaning pipe 9, and the chain meshes with the sprocket to drive the multiple cleaning pipes 9 to rotate simultaneously, so as to achieve the comprehensive flushing operation of the filter plate 3. The chain and sprocket structure is an existing structure and is not shown in the figure;

[0071] The operation of the cleaning pipe 9 is driven by a separate motor, which is not shown in the figure;

[0072] A limiting shaft 801 is rotatably connected to the outside of the cleaning frame 8. The limiting shaft 801 is rotatably connected to the air return port body 1. An adjusting cylinder body 802 is fixedly installed inside the air return port body 1. The piston end of the adjusting cylinder body 802 is rotatably connected to the cleaning frame 8 and is used to adjust the inclination angle of the cleaning frame 8;

[0073] The adjusting cylinder body 802 is used to drive the cleaning frame 8 to rotate to achieve the adjustment of the flushing angle;

[0074] The adjusting cylinder body 802 is an existing hydraulic cylinder and will not be elaborated here;

[0075] A collecting plate rack 10 is fixedly installed at the inner bottom of the air return port body 1. The collecting plate rack 10 is used to collect the impurities flushed;

[0076] A drying module 11 is fixedly installed inside the air return port body 1. The drying module 11 is used to dry the flushed filter plate 3. A one-way exhaust valve 12 is fixedly installed inside the air return port body 1;

[0077] The drying module 11 is an existing hot air drying device and is used to dry the filter plate 3. The one-way exhaust valve 12 is an existing device and will not be elaborated here.

[0078] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0079] The above has described a specific embodiment of the present invention in detail, but the described content is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the present invention.

Claims

1. A clean room return air vent structure capable of filtering, comprising a return air vent body (1), characterized in that: An exhaust notch (101) is provided on the side of the return air vent body (1) for discharging filtered air into the clean room; A sealing frame (2) is fixedly mounted on the top of the return air outlet body (1), and a filter plate (3) is slidably connected inside the sealing frame (2), and voice coil motors (13) are fixedly mounted around the bottom of the sealing frame (2), and the output ends of the voice coil motors (13) are connected to bottom support plates (1301), and the bottom support plates (1301) are used to support the filter plate (3); The return air outlet body (1) is rotatably connected to a driving shaft (5), a plurality of limit rods (501) are fixed on the outside of the driving shaft (5), an outer sleeve rod (6) is slidably sleeved on the outside of the limit rod (501), a support spring (601) is fixed between the end of the driving shaft (5) and the corresponding outer sleeve rod (6), the ends of the two corresponding outer sleeve rods (6) are fixedly connected to a base frame (7), and the filter plate (3) is fixedly mounted on the outside of the base frame (7) to drive the base frame (7) and the filter plate (3) to rotate inside the return air outlet body (1) through the rotation of the driving shaft (5), thereby completing the replacement operation of the filter plate (3) inside the sealing frame (2); An annular limiting frame (4) is fixedly installed inside the return air outlet body (1), the annular limiting frame (4) is coaxial with the drive shaft (5), and a plurality of arc-shaped slots (401) are opened inside the annular limiting frame (4), the arc-shaped slots (401) and the filter plate (3) are linearly adapted to each other, and an arc-shaped limiting piece (403) is fixedly installed on the outer side of the annular limiting frame (4), so that when the filter plate (3) rotates, it can enter the annular limiting frame (4) through the arc-shaped slot (401) along the arc-shaped limiting piece (403), and the corresponding arc-shaped slots (401) are fixedly installed inside to block the filter plate (3).

2. A clean room return air outlet structure capable of filtering according to claim 1, characterized in that: The annular limiting frame (4) is rotatably connected internally with a plurality of limiting blocking pieces (402), and the limiting blocking pieces (402) are used to separate corresponding filter plates (3).

3. A clean room return air outlet structure capable of filtering according to claim 1, characterized in that: A drive motor (102) is fixedly mounted on the outer side of the return air vent body (1), the end of the drive shaft (5) passes through the return air vent body (1), and a coupling is provided between the output end of the drive motor (102) and the end of the drive shaft (5) for driving the drive shaft (5) to operate inside the return air vent body (1).

4. The clean room return air outlet structure capable of filtering according to claim 1, characterized in that: Pressure monitors are fixedly mounted on the ends of the plurality of bottom support plates (1301); the pressure monitors are fitted to the base frame (7) and are used to monitor the filtering effect of the filter plate (3).

5. The clean room return air outlet structure capable of filtering according to claim 1, characterized in that: Sealing sheets are fixedly installed between the two ends of the annular limiting frame (4) and the interior of the return air port body (1).

6. The clean room return air outlet structure capable of filtering according to claim 1, characterized in that: A cleaning assembly is provided inside the return air outlet body (1) for cleaning the filter plate (3) after use. The cleaning assembly comprises a cleaning frame (8), the cleaning frame (8) is rotatably connected to the inside of the return air outlet body (1), a plurality of cleaning pipes (9) are rotatably connected inside the cleaning frame (8), a cleaning end head (901) is fixedly installed at the end of each of the plurality of cleaning pipes (9), a plurality of flushing nozzles (9011) are fixedly installed inside the cleaning end head (901), and the flushing nozzles (9011) are used to flush cleaning water toward the filter plate (3) to achieve cleaning treatment.

7. A clean room return air outlet structure capable of filtering according to claim 6, characterized in that: A transmission belt (902) is rotatably connected between the plurality of cleaning tubes (9) for driving the plurality of cleaning tubes (9) to rotate, thereby achieving flushing of the filter plate (3).

8. The clean room return air outlet structure capable of filtering according to claim 6, characterized in that: The outer side of the cleaning rack (8) is rotatably connected to a limit shaft (801), and the limit shaft (801) is rotatably connected to the return air outlet body (1). An adjusting cylinder (802) is fixedly installed inside the return air outlet body (1), and the piston end of the adjusting cylinder (802) is rotatably connected to the cleaning rack (8) for adjusting the inclination angle of the cleaning rack (8).

9. A clean room return air outlet structure capable of filtering according to claim 6, characterized in that: A collecting plate frame (10) is fixedly mounted on the inner bottom of the return air outlet body (1), and the collecting plate frame (10) is used to collect flushed impurities.

10. The clean room return air outlet structure capable of filtering according to claim 1, characterized in that: A drying module (11) is fixedly installed inside the return air outlet body (1), and the drying module (11) is used to dry the filter plate (3) after washing. A one-way exhaust valve (12) is fixedly installed inside the return air outlet body (1).

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