Clean room air circulation device

Abstract

This invention relates to the field of air circulation technology, specifically to a cleanroom air circulation device. The device includes a cleanroom air circulation pipe with an installation groove at its bottom. An assembly frame is inserted into the installation groove, and handle plates are fixed to both sides of the assembly frame. The handle plates are secured to the outer wall of the cleanroom air circulation pipe by anti-loosening screws. Rollers are rotatably connected to both ends of the top of the assembly frame, and the rollers are I-shaped circular plates. The advantages are: the lifting plate and brush plate design effectively cleans debris from the surface of the metal mesh plate and facilitates brush plate replacement; the water collection pipe and heating pipe allow for disinfectant spraying when no one is present, and daily fresh air drying; the rollers at the top of the assembly frame facilitate disassembly and sliding, and also act as guide wheels when installing items, greatly improving the practicality, convenience, and functionality of the device.

Description

Technical Field

[0001] This invention relates to the field of air circulation technology, specifically to a cleanroom air circulation device. Background Technology

[0002] In cleanroom applications, air circulation systems play a crucial role in maintaining the environmental quality within the cleanroom. Cleanrooms require strict control of the levels of particulate matter, microorganisms, and other pollutants in the air to meet specific production processes or research requirements. However, traditional cleanroom air circulation devices face numerous problems that urgently need to be addressed in practical use.

[0003] Traditional devices perform poorly in filtering and removing floating debris in fresh air. During air circulation, fresh air carries various floating debris, which traditional filtration structures struggle to completely intercept, and debris easily accumulates on the filter components. The complex and inconvenient cleaning methods lead to easy clogging of the filter components, reducing airflow efficiency, increasing energy consumption, shortening the lifespan of the filter components, and increasing maintenance costs.

[0004] Furthermore, traditional equipment has significant shortcomings in the daily maintenance and handling of special needs in cleanrooms. For example, when the cleanroom is unoccupied and requires regular disinfection, traditional equipment cannot automatically spray disinfectant, necessitating manual entry. This not only increases labor costs but also risks introducing new contaminants, affecting disinfection effectiveness. Additionally, during routine fresh air intake, the varying climates of different regions may result in high humidity levels. Traditional equipment lacks effective methods for drying this fresh air, and the introduction of humid air into the cleanroom could adversely affect equipment and products.

[0005] Finally, traditional equipment also presents numerous inconveniences in terms of installation, maintenance, and relocation. For example, when a modular frame needs to be moved after dismantling, the lack of a suitable pushing structure often requires multiple people to carry it, resulting in wasted manpower and low efficiency. Furthermore, when hoisting items under the cleanroom air circulation pipes for installation, traditional equipment lacks auxiliary guide wheels, making the hoisting process difficult and increasing construction complexity and time costs. Summary of the Invention

[0006] The purpose of this invention is to provide a cleanroom air circulation device to solve the problems mentioned in the background art.

[0007] To achieve the above objective, the present invention provides the following technical solution: a clean room air circulation device, comprising a clean room air circulation pipe, wherein the bottom of the clean room air circulation pipe is provided with an installation slot, an assembling frame is inserted into the installation slot, handle plates are fixed on both sides of the assembling frame, the handle plates are fixed on the outer wall of the clean room air circulation pipe by looseness-proof screws, pulleys are rotatably connected to both ends of the top of the assembling frame, and each pulley is an I-shaped annular plate; a filter assembly is installed on the inner side of the assembling frame, a metal mesh plate is arranged on one side of the filter assembly, a lifting plate is slidably connected between two parallel side plates of the assembling frame, a brush plate is installed on one side of the lifting plate, a connecting block is fixed on the other side of the lifting plate, a screw rod is fittingly connected to the surface of the connecting block, and the screw rod is in transmission connection with the power output end of a two-way servo motor fixed on the bottom plate of the assembling frame; a water collecting pipe and a heating pipe are arranged on the other side of the filter assembly, a plurality of atomizing nozzles are inserted and fixed on the pipe body of the water collecting pipe, and a connecting pipe is inserted and fixed at the bottom of the water collecting pipe.

[0008] preferably, the assembling frame is in a C-shaped plate structure, sealing gaskets are fixed on both sides of the assembling frame, the sealing gaskets are in a C-shaped plate structure, the sealing gaskets are clamped between the assembling frame and the installation slot and undergo elastic deformation, the handle plates are in a square-frame-shaped plate structure, a rubber sleeve is sleeved and fixed at the bottom of the handle plates, a plurality of looseness-proof screws are screwed to the surface of the handle plates, the looseness-proof screws penetrate through the handle plates and are then screwed to the outer wall of the clean room air circulation pipe, and after the assembling frame is removed from the bottom of the clean room air circulation pipe and placed on the ground, the two handle plates support the assembling frame.

[0009] preferably, two limiting plates are fixed on each of the two parallel side plates of the assembling frame, the limiting plates are in an L-shaped plate structure, the filter assembly is inserted between the two limiting plates, a looseness-proof screw is screwed to the top of the limiting plate, the looseness-proof screw penetrates through the limiting plate and is then screwed to the surface of the filter assembly, and the height of the filter assembly is equal to the spacing between the top plate and the bottom plate of the clean room air circulation pipe.

[0010] preferably, a sinking groove is formed on the top surface of the bottom plate of the assembling frame, a discharge opening is formed on the bottom surface of the sinking groove, a through groove is formed on one side of the sinking groove, the top notch of the through groove is located between the filter assembly and the metal mesh plate, a collecting frame is inserted into the discharge opening, a backing plate is fixed on the bottom surface of the collecting frame, the backing plate covers the bottom notch of the discharge opening, connecting handles are fixed at both ends of the backing plate, a looseness-proof screw is screwed to the surface of the connecting handle, and the looseness-proof screw penetrates through the connecting handle and is then screwed to the bottom surface of the clean room air circulation pipe.

[0011] preferably, the length of the long side of the notch of the discharge opening is smaller than the width of the clean room air circulation pipe, the length of the long side of the through groove is smaller than the length of the long side of the discharge opening, and the length of the long sides of the discharge opening and the sinking groove are equal.

[0012] Preferably, the lifting plate has an "L" shaped plate structure, and the surface of the brush plate has multiple perforations. The height of the brush plate is less than the distance from the top surface of the lifting plate to the bottom plate of the lifting plate. A screw is inserted into the perforation, and the bottom end of the screw is fixed to the bottom plate of the lifting plate. The height of the screw is greater than the height of the brush plate. A washer and a nut are fitted on the top end of the screw. The brush bristles on the surface of the brush plate contact the metal mesh plate.

[0013] Preferably, the surface of the connecting block is provided with a threaded hole, the threaded rod passes through the threaded hole, and the threaded rod and the threaded hole are connected in a fitting manner. The top end of the threaded rod is fitted with a bearing, and the outer ring of the bearing is fixed to the top plate of the cleanroom air circulation pipe.

[0014] Preferably, both ends of the water collection pipe are blocked by the two side plates of the assembly frame, the atomizing nozzle and the water collection pipe are inclined, and a screw joint is fixed at the bottom end of the connecting pipe, and a sealing cap is screwed onto the bottom end of the screw joint.

[0015] Preferably, multiple suspension plates are fixed between two parallel side plates of the assembly frame, and the heating tube is fixed on the multiple suspension plates.

[0016] Preferably, a limiting shaft is inserted into the inner ring of the pulley. The limiting shaft is a "T"-shaped round rod. One end of the limiting shaft is fixed to the surface of the assembly frame, and the diameter of the other end of the limiting shaft is larger than the inner ring diameter of the pulley.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The cleanroom air circulation device proposed in this invention can effectively clean debris from the surface of the metal mesh plate through the design of the lifting plate and brush plate, and the brush plate is easy to replace. The setting of water collection pipe and heating pipe can realize disinfectant spraying when no one is around, and can dry fresh air daily. The pulleys on the top of the assembly frame can not only facilitate the sliding after disassembly, but also act as guide wheels when installing items, which greatly improves the practicality, convenience and functionality of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Sectional view of the structure at point AA; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point D; Figure 6 This is a schematic diagram of the connection structure between the assembly frame and the metal mesh plate of the present invention; Figure 7 is a schematic view of the connecting structure of the heating tube and the hanging plate of the present invention; Figure 8 is a schematic view of the inverted structure of the assembling frame of the present invention; Figure 9 is a schematic view of the structure of the air circulation pipe of the clean room of the present invention; Figure 10 is a schematic view of the structure of the assembling frame of the present invention; Figure 11 is a schematic view of the structure of the collecting frame of the present invention.

[0019] In the figure: 1 is a clean room air circulation pipe, 101 is an installation groove, 2 is an assembling frame, 201 is a limit plate, 202 is a sinking groove, 203 is a discharge port, 204 is a through groove, 205 is a sealing gasket, 206 is a metal mesh plate, 207 is a hanging plate, 3 is a filter assembly, 4 is a collecting frame, 401 is a backing plate, 402 is a connecting handle, 5 is a lifting plate, 501 is a connecting block, 502 is a brush plate, 503 is a perforation, 504 is a screw rod, 505 is a nut, 6 is a two-way servo motor, 601 is a screw shaft, 602 is a bearing, 7 is a water collecting pipe, 701 is an atomizing nozzle, 702 is a connecting pipe, 703 is a sealing cap, 8 is a heating tube, 9 is a handle plate, 901 is a rubber sleeve, 10 is a limit shaft, 1001 is a pulley. DETAILED DESCRIPTION

[0020] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

[0021] Please refer to Figures 1 to 11 , the present invention provides a technical solution: an air circulation device for a clean room, comprising a clean room air circulation pipe 1, the bottom of the clean room air circulation pipe 1 is provided with an installation groove 101, the assembling frame 2 is inserted into the installation groove 101, handle plates 9 are fixed on both sides of the assembling frame 2, the handle plates 9 are fixed on the outer wall of the clean room air circulation pipe 1 by anti-loosening screws, the assembling frame 2 is in a "匚"-shaped plate structure, sealing gaskets 205 are fixed on both sides of the assembling frame 2, the sealing gasket 205 is in a "匚"-shaped plate structure, the sealing gasket 205 is clamped between the assembling frame 2 and the installation groove 101 to undergo elastic deformation, the handle plate 9 is in a "return"-shaped plate structure, the bottom of the handle plate 9 is sleeved and fixed with a rubber sleeve 901, a plurality of anti-loosening screws are screwed on the surface of the handle plate 9, the anti-loosening screws penetrate through the handle plate 9 and then are screwed on the outer wall of the clean room air circulation pipe 1, after the assembling frame 2 is removed from the bottom of the clean room air circulation pipe 1 and placed on the ground, the two handle plates 9 support the assembling frame 2.

[0022] After the assembly frame 2 is inserted into the mounting slot 101, it seals the bottom of the cleanroom air circulation pipe 1. The cleanroom air circulation pipe 1 is used to install on the air outlet duct of the cleanroom air intake fan to introduce fresh air into the room. The sealing gasket 205 fills the gap between the assembly frame 2 and the mounting slot 101 to ensure the sealing of the assembly frame 2 after it is installed in the mounting slot 101. When installing the assembly frame 2, hold the handle plate 9 to lift the assembly frame 2 and use the anti-loosening screw to thread through the handle plate 9 and screw it onto the outer wall of the cleanroom air circulation pipe 1. This completes the connection between the cleanroom air circulation pipe 1 and the assembly frame 2. When the assembly frame 2 is removed from the cleanroom air circulation pipe 1 and placed on the ground, the handle plate 9 supports the assembly frame 2.

[0023] To achieve the goal of purifying the incoming air after installing filter assembly 3, the following is proposed: The inner side of the assembly frame 2 is equipped with a filter assembly 3, which consists of a three-stage filtration structure: pre-filter, medium-efficiency filter, and high-efficiency filter. The pre-filter uses a metal mesh or non-woven fabric to intercept large particles ≥5μm, acting as the first barrier to protect subsequent filter media. The medium-efficiency filter uses a dense structure of glass fiber or composite non-woven fabric to capture particles of 1-5μm through diffusion and interception effects, further reducing the burden on the high-efficiency filter. The high-efficiency filter (HEPA) uses ultra-fine glass fiber or polyester fiber filter elements, and through mechanisms such as sieving, inertial impaction, and electrostatic adsorption, it achieves a filtration efficiency of over 99.97% for particles ≥0.3μm, ensuring that the air meets cleanroom standards. The three-stage filter elements are installed in series through flanges or quick-opening blind flanges. Airflow passes through each layer of filter media sequentially, forming a gradient purification process from coarse filtration to fine filtration. At the same time, the filter frame adopts a sealed structure to prevent bypass leakage. Finally, the clean air that has passed through the high-efficiency filter is evenly diffused into the cleanroom through the air outlet, maintaining the dynamic cleanliness of the room. Two limiting plates 201 are fixed on each of the two parallel side plates of the assembly frame 2. The limiting plates 201 have an "L" shaped plate structure. The filter assembly 3 is inserted between the two limiting plates 201. The top of the limiting plate 201 is screwed with an anti-loosening screw. The anti-loosening screw passes through the limiting plate 201 and is screwed onto the surface of the filter assembly 3. The height of the filter assembly 3 is equal to the distance between the top plate and the bottom plate of the cleanroom air circulation pipe 1.

[0024] After the filter assembly 3 is pushed between the two parallel side plates of the assembly frame 2, the filter assembly 3 is connected to the limiting plate 201 using anti-loosening screws. After the assembly frame 2 is installed at the bottom of the cleanroom air circulation pipe 1, the filter assembly 3 forms a barrier to filter fresh air in the cleanroom air circulation pipe 1, purifying the fresh air introduced into the cleanroom air circulation pipe 1. Furthermore, the filter assembly 3 can be removed from the assembly frame 2, and the assembly frame 2 can be removed from the bottom of the cleanroom air circulation pipe 1, thus facilitating the replacement and cleaning of the filter assembly 3.

[0025] To achieve the filtration of floating debris in multiple fresh air systems and the cleaning of debris filtered from the surface of the metal mesh plate 206, the following proposed method is proposed: A metal mesh plate 206 is provided on one side of the filter assembly 3. A lifting plate 5 is slidably connected between two parallel side plates of the assembly frame 2. A brush plate 502 is installed on one side of the lifting plate 5, and a connecting block 501 is fixed on the other side of the lifting plate 5. A lead screw 601 is connected to the surface of the connecting block 501. The lead screw 601 is driven by the power output end of a bidirectional servo motor 6 fixed on the bottom plate of the assembly frame 2. A recessed groove 202 is opened on the top surface of the bottom plate of the assembly frame 2. A discharge port 203 is provided, and a through groove 204 is provided on one side of the settling tank 202. The top opening of the through groove 204 is located between the filter assembly 3 and the metal mesh plate 206. A collection rack 4 is inserted into the discharge port 203, and a pad 401 is fixed to the bottom surface of the collection rack 4. The pad 401 covers the bottom opening of the discharge port 203. Connecting handles 402 are fixed to both ends of the pad 401. Anti-loosening screws are screwed onto the surface of the connecting handles 402. The anti-loosening screws pass through the connecting handles 402 and are screwed onto the filter assembly 206. The bottom surface of the cleanroom air circulation pipe 1; the long side length of the groove of the discharge port 203 is less than the width of the cleanroom air circulation pipe 1, the long side length of the through groove 204 is less than the long side length of the discharge port 203, and the long side lengths of the discharge port 203 and the sinking groove 202 are equal; the lifting plate 5 has an "L" shaped plate structure, and multiple perforations 503 are opened on the surface of the brush plate 502. The height of the brush plate 502 is less than the distance from the top surface of the lifting plate 5 to the bottom plate of the lifting plate 5. A screw 50 is inserted into the inside of the perforation 503. 4. The bottom end of the screw 504 is fixed to the base plate of the lifting plate 5. The height of the screw 504 is greater than the height of the brush plate 502. The top end of the screw 504 is fitted with a washer and a nut 505. The bristles on the surface of the brush plate 502 contact the metal mesh plate 206. The surface of the connecting block 501 is provided with a threaded hole. The screw 601 passes through the threaded hole and the screw 601 and the threaded hole are connected. The top end of the screw 601 is fitted with a bearing 602. The outer ring of the bearing 602 is fixed to the top plate of the clean room air circulation pipe 1.

[0026] After the bidirectional servo motor 6 is periodically triggered, the lead screw 601 is driven to rotate forward, causing the lifting plate 5 to rise. When the lifting plate 5 reaches the bottom plate of the cleanroom air circulation pipe 1, the bidirectional servo motor 6 drives the lead screw 601 to rotate in reverse, causing the lifting plate 5 to fall. During this process, the lifting plate 5 drives the brush plate 502 to clean the metal mesh plate 206. The swept debris enters the collection rack 4 through the through groove 204 and the sinking groove 202. The collection rack 4 is periodically removed to clean the collected debris. The brush plate 502 is replaced periodically after long-term use. That is, after loosening the nut 505, the brush plate 502 is pulled out from the top of the lifting plate 5, and the new brush plate 502 is pushed into the lifting plate 5. The brush plate 502 is installed in the lifting plate 5 by using the screw 504 and the nut 505.

[0027] In order to spray disinfectant in the cleanroom when introducing fresh air and to ensure the drying of the introduced fresh air, the following measures were proposed: On the other side of the filter assembly 3, there is a water collection pipe 7 and a heating pipe 8. Multiple atomizing nozzles 701 are inserted and fixed on the body of the water collection pipe 7, and a connecting pipe 702 is inserted and fixed at the bottom of the water collection pipe 7. Both ends of the water collection pipe 7 are blocked by the two side plates of the assembly frame 2. The atomizing nozzles 701 and the water collection pipe 7 are tilted. A screw joint is fixed at the bottom of the connecting pipe 702, and a sealing cap 703 is screwed onto the bottom of the screw joint. Multiple hanging plates 207 are fixed between the two parallel side plates of the assembly frame 2, and the heating pipe 8 is fixed on the multiple hanging plates 207.

[0028] When the cleanroom is unoccupied and requires regular disinfection, the sealing cap 703 is removed from the bottom of the connecting pipe 702. Then, the pipe body for pumping disinfectant is fitted onto the bottom end of the connecting pipe 702 and secured with a clamp. The pumped disinfectant is injected into the water collection pipe 7 through the connecting pipe 702 and sprayed out through the atomizing nozzle 701. The cleanroom air circulation pipe 1, in conjunction with the fan, introduces fresh air, which in turn introduces the sprayed disinfectant into the cleanroom. When fresh air is introduced routinely and needs to be dried, the heating pipe 8 is turned on to heat up and dry the fresh air.

[0029] To enable the sliding of the disassembled assembly frame 2, the following was proposed: The assembly frame 2 has pulleys 1001 rotatably connected to both ends of the top. The pulleys 1001 are in the shape of an "I" ring plate. The inner ring of the pulley 1001 is inserted into a limiting shaft 10. The limiting shaft 10 is in the shape of a "T" round rod. One end of the limiting shaft 10 is fixed to the surface of the assembly frame 2, and the diameter of the other end of the limiting shaft 10 is larger than the inner ring diameter of the pulley 1001.

[0030] After the assembly frame 2 is removed from the bottom of the cleanroom air circulation pipe 1, hold the handle plate 9 and invert the assembly frame 2. At this time, the pulley 1001 contacts the ground and supports the assembly frame 2. The assembly frame 2 can be pushed to slide. After the assembly frame 2 is installed in the cleanroom air circulation pipe 1, when it is necessary to hoist items to the bottom of the cleanroom air circulation pipe 1 for installation, the rope can be wrapped around the pulley 1001, one end of the rope is tied to the item, and the other end is pulled by the staff. The pulley 1001 acts as a guide wheel during hoisting.

[0031] Instructions for using cleanroom air circulation devices: Push the filter assembly 3 between the two parallel side plates of the assembling frame 2, so that it is inserted between the two "L-shaped" limiting plates 201, and the height of the filter assembly 3 is equal to the spacing between the top plate and the bottom plate of the clean room air circulation duct 1. A locking screw penetrates the limiting plate 201 and is then screwed onto the surface of the filter assembly 3, completing the installation of the filter assembly 3 on the assembling frame 2. At this time, the filter assembly 3 forms a barrier for filtering fresh air in the clean room air circulation duct 1, and purifies the introduced fresh air. The filter assembly 3 is composed of three-stage filtration structures: primary, medium and high efficiency. The air flow passes through each layer of filter material in sequence, forming a gradient purification process from coarse filtration to fine filtration. Meanwhile, the filter frame adopts a sealing structure to prevent bypass leakage. Finally, the clean air passing through the high-efficiency filter uniformly diffuses into the clean room through the air supply outlet, maintaining the indoor dynamic cleanliness. When it is necessary to replace or clean the filter assembly 3, first remove the locking screws connecting the assembling frame 2 and the clean room air circulation duct 1, remove the assembling frame 2 from the bottom of the clean room air circulation duct 1, then remove the locking screws connecting the filter assembly 3 and the limiting plate 201, and the filter assembly 3 can be removed from the assembling frame 2 for replacement and cleaning. Hold the handle plate 9 by hand, lift and support the assembling frame 2, and insert it into the installation groove 101 opened at the bottom of the clean room air circulation duct 1. At this time, the "C-shaped" sealing gaskets 205 fixed on both sides of the assembling frame 2 undergo elastic deformation, filling the gap between the assembling frame 2 and the installation groove 101 to ensure sealing. A locking screw penetrates the handle plate 9 and is then screwed onto the outer wall of the clean room air circulation duct 1, completing the connection between the clean room air circulation duct 1 and the assembling frame 2.

[0032] The switch of the two-way servo motor 6 is triggered periodically. The two-way servo motor 6 is fixed on the bottom plate of the assembling frame 2, and its power output end is in transmission connection with a screw rod 601, which penetrates the screw hole on the surface of the connecting block 501. The two-way servo motor 6 drives the screw rod 601 to rotate forward to drive the lifting plate 5 to rise. When the lifting plate 5 reaches below the bottom plate of the clean room air circulation duct 1, the two-way servo motor 6 drives the screw rod 601 to rotate reversely to drive the lifting plate 5 to drop. During this process, the brush plate 502 installed on the other side of the lifting plate 5 sweeps the metal mesh plate 206, and the swept sundries enter the collection frame 4 through the through groove 204 and the sinking groove 202. The collection frame 4 is removed periodically to clean the sundries collected therein. The brush plate 502 is replaced periodically after long-term use. After loosening the nut 505, pull the brush plate 502 away from the top of the lifting plate 5, push a new brush plate 502 into the lifting plate 5, and install the brush plate 502 in the lifting plate 5 by the cooperation of the screw 504 and the nut 505.

[0033] When the cleanroom is unoccupied and requires regular disinfection, the sealing cap 703 is removed from the bottom of the connecting pipe 702, which is fixed to the bottom of the water collection pipe 7. Then, the pipe body for pumping disinfectant is fitted onto the bottom end of the connecting pipe 702 and secured with a clamp. The pumped disinfectant is injected into the water collection pipe 7 through the connecting pipe 702 and sprayed out through multiple inclined atomizing nozzles 701 fixed to the water collection pipe 7. Simultaneously, the cleanroom air circulation pipe 1, in conjunction with a fan, introduces fresh air, which in turn introduces the sprayed disinfectant into the cleanroom. During routine fresh air introduction, if drying of the fresh air is required, the heating pipes 8, fixed on multiple hanging plates 207 between two parallel side panels of the assembly frame 2, are activated. The heating pipes 8 heat up to dry the fresh air.

[0034] After the assembly frame 2 is removed from the bottom of the cleanroom air circulation pipe 1, hold the handle plate 9 and invert the assembly frame 2. At this time, the "I"-shaped pulleys 1001 connected to the top two ends of the assembly frame 2 will contact the ground, supporting the assembly frame 2. The assembly frame 2 can then be pushed to slide. After the assembly frame 2 is installed on the cleanroom air circulation pipe 1, if it is necessary to hoist items to the bottom of the cleanroom air circulation pipe 1 for installation, the rope can be wrapped around the pulley 1001, one end of the rope can be tied to the item, and the other end can be pulled by the staff. The pulley 1001 acts as a guide wheel during hoisting.

[0035] 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 cleanroom air circulation device, comprising a cleanroom air circulation pipe (1), wherein an installation groove (101) is provided at the bottom of the cleanroom air circulation pipe (1), characterized in that: An assembly frame (2) is inserted into the inside of the mounting slot (101). A handle plate (9) is fixed on both sides of the assembly frame (2). The handle plate (9) is fixed to the outer wall of the clean room air circulation pipe (1) by anti-loosening screws. A pulley (1001) is rotatably connected to both ends of the top of the assembly frame (2). The pulley (1001) is in the shape of an "I" ring plate. A filter assembly (3) is installed on the inner side of the assembly frame (2). A metal mesh plate (206) is provided on one side of the filter assembly (3). A lifting plate (5) is slidably connected between two parallel side plates of the assembly frame (2). A brush plate (502) is installed on one side of the lifting plate (5). A connecting block (501) is fixed on the other side of the lifting plate (5). A lead screw (601) is connected to the surface of the connecting block (501). The lead screw (601) is connected to the power output end of a bidirectional servo motor (6) fixed on the bottom plate of the assembly frame (2). The other side of the filter assembly (3) is provided with a water collection pipe (7) and a heating pipe (8). Multiple atomizing nozzles (701) are inserted and fixed on the body of the water collection pipe (7), and a connecting pipe (702) is inserted and fixed at the bottom of the water collection pipe (7). The assembling frame (2) is in a "匚"-shaped plate structure, gaskets (205) are fixed on both sides of the assembling frame (2), the gaskets (205) are in a "匚"-shaped plate structure, the gaskets (205) are clamped between the assembling frame (2) and the mounting groove (101) to generate elastic deformation; the handle plate (9) is in a "回"-shaped plate structure, a rubber sleeve (901) is sleeved and fixed at the bottom of the handle plate (9), a plurality of anti-loosening screws are screwed on the surface of the handle plate (9), the anti-loosening screws pass through the handle plate (9) and then are screwed on the outer wall of the clean room air circulation pipe (1). After the assembling frame (2) is removed from the bottom of the clean room air circulation pipe (1) and placed on the ground, the two handle plates (9) support the assembling frame (2); the inner ring opening of the pulley (1001) is inserted with a limit shaft (10), the limit shaft (10) is a "T"-shaped round rod, one end of the limit shaft (10) is fixed on the surface of the assembling frame (2), and the diameter of the other end of the limit shaft (10) is larger than the inner ring diameter of the pulley (1001); two limit plates (201) are fixed on each of two parallel distributed side plates of the assembling frame (2), the limit plates (201) are in an "L"-shaped plate structure, the filter assembly (3) is inserted between the two limit plates (201), an anti-loosening screw is screwed on the top of the limit plate (201), the anti-loosening screw passes through the limit plate (201) and then is screwed on the surface of the filter assembly (3), and the height of the filter assembly (3) is equal to the spacing between the top plate and the bottom plate of the clean room air circulation pipe (1); a sinking groove (202) is provided on the top surface of the bottom plate of the assembling frame (2), a discharge opening (203) is provided on the bottom surface of the sinking groove (202), a through groove (204) is provided on one side of the sinking groove (202), the top notch of the through groove (204) is located between the filter assembly (3) and the metal mesh plate (206), a collecting frame (4) is inserted into the discharge opening (203), a backing plate (401) is fixed on the bottom surface of the collecting frame (4), the backing plate (401) covers the bottom notch of the discharge opening (203), connecting handles (402) are fixed at both ends of the backing plate (401), anti-loosening screws are screwed on the surface of the connecting handles (402), and the anti-loosening screws pass through the connecting handles (402) and then are screwed on the bottom surface of the clean room air circulation pipe (1); the length of the long side of the notch of the discharge opening (203) is smaller than the width of the clean room air circulation pipe (1), the length of the long side of the through groove (204) is smaller than the length of the long side of the discharge opening (203), and the length of the long sides of the discharge opening (203) and the sinking groove (202) are equal.

2. The cleanroom air circulation device according to claim 1, characterized in that: The lifting plate (5) has an "L" shaped plate structure. Multiple perforations (503) are opened on the surface of the brush plate (502). The height of the brush plate (502) is less than the distance from the top surface of the lifting plate (5) to the bottom plate of the lifting plate (5). A screw (504) is inserted into the perforation (503). The bottom end of the screw (504) is fixed on the bottom plate of the lifting plate (5). The height of the screw (504) is greater than the height of the brush plate (502). A washer and a nut (505) are fitted on the top end of the screw (504). The brush bristles on the surface of the brush plate (502) contact the metal mesh plate (206).

3. A cleanroom air circulation device according to claim 2, characterized in that: The surface of the connecting block (501) is provided with a threaded hole, the threaded rod (601) passes through the threaded hole, and the threaded rod (601) and the threaded hole are connected in a fit. The top end of the threaded rod (601) is fitted with a bearing (602), and the outer ring of the bearing (602) is fixed on the top plate of the clean room air circulation pipe (1).

4. A cleanroom air circulation device according to claim 1, characterized in that: The two ends of the water collection pipe (7) are respectively blocked by the two side plates of the assembly frame (2). The atomizing nozzle (701) and the water collection pipe (7) are inclined. The bottom end of the connecting pipe (702) is fixed with a screw joint, and the bottom end of the screw joint is fitted with a sealing cap (703).

5. A cleanroom air circulation device according to claim 1, characterized in that: Multiple hanging plates (207) are fixed between the two parallel side plates of the assembly frame (2), and the heating tube (8) is fixed on the multiple hanging plates (207).

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