Variable air volume laminar flow clean room and variable air volume method thereof

Abstract

The present application relates to the technical field of clean room, and discloses a variable air volume laminar flow clean room and a variable air volume method thereof, which comprises a main body and a connecting mechanism arranged on the front face and rear wall of the main body, and further comprises a cleaning mechanism arranged on the outer wall of the main body, wherein the cleaning mechanism comprises a blower fixedly connected to the left side of the main body. Dust is driven by gas to disperse along the surface of the circular arc plate to both sides and enter the flow guide frame, and the dust is made to enter the bottom of the circular arc plate along the trajectory of the flow guide frame. When backflow occurs, the dust flowing back along the flow guide frame is limited by the limiting strip and falls into the bottom of the circular arc plate again. When negative pressure is generated below the main body, the dust entering the bottom of the main body is prevented from being sucked into the main body by the negative pressure, so that the dust removal effect of the clean room is avoided from being affected, the cost is reduced, the volume of the clean room is reduced, and the device is convenient to install.

Description

Technical Field

[0001] This invention relates to the field of cleanroom technology, specifically to a laminar flow cleanroom with variable air volume and a method for varying the air volume. Background Technology

[0002] A cleanroom is a well-sealed space where parameters such as air cleanliness, temperature, humidity, pressure, and noise are controlled as needed. A cleanroom is a specially designed and constructed dust-free room that removes pollutants such as microparticles and bacteria from the air within a defined space and controls indoor temperature, cleanliness, indoor pressure, airflow speed and distribution, noise and vibration, lighting, and static electricity within a specific range. Cleanrooms utilize HEPA air purification equipment, which has a dust collection rate of 99.97% to 99.99995%, making the air filtered through these filters extremely clean. However, in addition to people, cleanrooms also contain dust-generating sources such as machinery. Once this dust spreads, the clean space cannot be maintained; therefore, airflow must be used to quickly expel the generated dust outdoors.

[0003] Before entering a cleanroom, it's generally necessary to go inside to remove dust from the body. This is usually done by blowing air onto the body using a blower inside the cleanroom. However, when dust settles to the bottom, the air pressure from the blower can be too high, creating a negative pressure at the bottom of the device. This can draw dust from the bottom of the cleanroom into the cleanroom, affecting the dust removal efficiency. Installing a vacuum cleaner at the bottom of the cleanroom would not only increase the cost but also increase its size, making the installation of the device inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a laminar flow cleanroom with variable air volume and a method for varying the air volume, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a laminar flow cleanroom with variable air volume and a method for varying the air volume, comprising a main body and a connecting mechanism, wherein the connecting mechanism is disposed on the front and rear walls of the main body, and further comprising: The cleanroom mechanism is located on the outer wall of the main body. The cleanroom mechanism includes a blower, which is fixedly connected to the left side of the main body. A diffuser is fixedly connected to the output end of the blower. The diffuser is located inside the main body. An electric push rod is fixedly connected to the side of the blower away from the diffuser. A sealing frame is fixedly connected to the output end of the electric push rod. A sloped block is fixedly connected to the inner wall of the sealing frame on the side away from the blower. The dust collection mechanism is located at the bottom of the main body. The dust collection mechanism includes a fixed rod, which is fixedly connected to the bottom of the main body. An arc plate is fixedly connected to the bottom of the fixed rod. Extension frames are fixedly connected to both the front and back of the arc plate. A flow guide frame is fixedly connected to the back of the extension frame. A limiting strip is fixedly connected to the inner wall of the flow guide frame.

[0006] Furthermore, the main body includes a closed door, which is hinged to the front and back of the main body. Connection ports are provided on the left and right sides of the main body. Sealing grooves are provided on the inner walls of the four corners of the main body. Mounting holes are provided through the inner walls of the sealing grooves. Fitting grooves are provided on the inner walls of the left and right sides of the main body. Mounting grooves are provided on the inner walls of the top of the main body. Dust collection holes are provided through the bottom of the main body.

[0007] Furthermore, the installation mechanism includes a support plate, which is inserted into the mounting hole. A sealing plate is fixedly connected to the right side of the support plate. The outer wall of the sealing plate fits into the inner wall of the sealing groove. A groove is opened on the right side of the sealing plate. A soft pad is inserted into the groove on the right side of the sealing plate. Several insertion holes are opened through the inside of the support plate. Fixing bolts are inserted into the several insertion holes opened inside the support plate.

[0008] Furthermore, there are two cleanroom units, which are symmetrically distributed around the main body. The outer wall of the diffuser frame is fitted with the fitting groove. There are four electric push rods, which are distributed at equal intervals. The inner wall of the closed frame is connected to the outer wall of the blower. There are several sloping blocks, which are set corresponding to the air inlet of the blower. The sloping blocks are in the shape of a slope.

[0009] Furthermore, there are several fixed rods, which are distributed at equal intervals. The arc plate is distributed in correspondence with the dust collection hole. There are two flow guides, which are symmetrically distributed with the arc plate as the center. The flow guides are arc-shaped.

[0010] Furthermore, a blower mechanism is provided on the top of the main body. The blower mechanism includes a blower, which is fixedly connected to the top of the main body. The blower's air outlet frame is set inside the mounting slot. Four electric actuators are fixedly connected to the top of the blower. The four electric actuators are evenly distributed. A sealing cover is fixedly connected to the output end of the four electric actuators. A variable blocking plate is fixedly connected to the bottom inner wall of the sealing cover. The variable blocking plate has the same shape as the sloped blocking block.

[0011] Furthermore, a cleaning mechanism is provided on the inner wall of the arc plate. A pull rod is slidably connected to the inner wall of the cleaning mechanism. A scraper is fixedly connected to the front of the pull rod. There are two scrapers, which are symmetrically distributed around the pull rod. The end of the scraper away from the scraper receives a shrinkage device.

[0012] Furthermore, the connecting mechanism includes a connecting plate, which is fixedly connected to the front of the main body. A support frame is fixedly connected to the bottom of the connecting plate. There are two support frames, which are symmetrically distributed around the connecting plate. There are also two connecting mechanisms, which are symmetrically distributed around the main body.

[0013] A laminar flow cleanroom with variable air volume and its variable air volume method, the steps of which are as follows: S1: After transporting the main body to the fixed position, place the main body on the ground using the support frame and connecting plate. Adjust the position of the main body and insert the support plate into the mounting hole. Connect the end of the support plate away from the main body to the wall or fixed frame. Fix the sealing plate in the sealing groove with bolts. Pre-tighten the support plate. Then insert the fixing bolt into the support plate and thread it to the wall or fixed frame to fix the main body. Install the four mounting mechanisms at the four corners of the main body so that the main body is suspended after installation. Install the dust collection mechanism at the bottom of the device. The mounting mechanism facilitates the installation of the cleanroom mechanism. S2: After the cleanroom is installed, enter the main body and close the closed door to seal the interior. Start the blower to draw in air and filter it. The air is then transmitted into the main body through the diffuser. At the same time, the fan on the top of the main body starts in sync with the blower to blow the air vertically downwards inside the main body, dispersing the dust downwards so that it enters the bottom of the main body through the dust collection holes. S3: The electric actuator drives the sealing frame to retract, causing the sloped block to enter the air inlet of the blower and block the air inlet. The sloped shape of the block gradually blocks the air inlet, making the amount of gas entering the blower gradually decrease. S4: When the dust inside the main body enters the bottom of the main body through the dust collection hole, the gas carries the dust to disperse to both sides along the surface of the arc plate and enters the inside of the guide frame. The dust enters the bottom of the arc plate along the trajectory of the guide frame. When backflow occurs, it is restricted by the limiting strip, so that the dust flowing back along the guide frame falls back into the bottom of the arc plate. A groove is opened in front of the device, and the scraper is pulled to drive the pull rod to scrape the bottom of the arc plate.

[0014] The present invention has the following beneficial effects: When dust inside the main body enters the bottom of the main body through the dust collection hole, the gas carries the dust to disperse it to both sides along the surface of the arc plate and into the guide frame. Following the trajectory of the guide frame, the dust enters the bottom of the arc plate. When backflow occurs, it is restricted by the limiting strip, causing the dust flowing back along the guide frame to fall back into the bottom of the arc plate. When a negative pressure is generated inside the main body, it prevents the negative pressure from sucking the dust that has entered the bottom of the main body into the main body, thus avoiding affecting the dust removal effect of the cleanroom, reducing costs, and reducing the volume of the cleanroom to facilitate the installation of the device. By slotting the front of the device, pulling the scraper drives the pull rod to scrape the bottom of the arc plate, thus facilitating the cleaning of dust.

[0015] In this invention, when installing the cleanroom, the main body is transported to a fixed location and then placed on the ground via a support frame and connecting plate. The position of the main body is adjusted, and the support plate is inserted into the mounting hole. The end of the support plate furthest from the main body is connected to the wall or a fixed frame. A sealing plate is then fixed inside the sealing groove with bolts, and the support plate is pre-tightened to facilitate subsequent installation. Fixing bolts are then inserted into the support plate and threaded onto the wall or fixed frame, thus securing the main body to the support plate. Four mounting mechanisms are installed at the four corners of the main body, preventing the outer wall of the main body from directly contacting the wall or other fixed structures. This allows the main body to be suspended after installation, facilitating the expansion and installation of other auxiliary devices within the cleanroom. It also facilitates the installation of a dust collection mechanism at the bottom of the device. The mounting mechanisms also facilitate the installation of cleanroom mechanisms, thereby improving the practicality of the device.

[0016] After the cleanroom is installed, once inside the main body, the sealed door is closed, creating a sealed environment. The blower is activated to draw in air while simultaneously filtering it. The air is then transported into the main body via a diffuser. Two cleanroom mechanisms blow air onto personnel inside the main body to remove dust. Simultaneously, a fan at the top of the main body starts in sync with the blower, blowing air vertically downwards to disperse dust. This dust then enters the bottom of the main body through dust collection holes. Additionally, adhesive flooring can be attached to the inner bottom wall of the main body to remove dust from shoe soles. An electric actuator retracts the sealing frame, allowing a sloping block to enter the blower's air inlet and seal it. The sloping shape of the block gradually reduces the amount of air entering the blower, thus enabling variable airflow.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the entire invention; Figure 3 This is a schematic diagram of the main structure of the present invention; Figure 4 This is a schematic diagram of the installation mechanism of the present invention; Figure 5 This is a schematic diagram of the blower mechanism of the present invention; Figure 6 This is a schematic diagram of the dust collection mechanism of the present invention; Figure 7 for Figure 2 Enlarged view of point A in the middle; Figure 8 for Figure 6 Enlarged view of section B in the middle.

[0020] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 101. Enclosed door; 102. Connection port; 103. Enclosed groove; 104. Fitting groove; 105. Mounting groove; 106. Mounting hole; 107. Dust collection hole; 2. Mounting mechanism; 201. Support plate; 202. Enclosed plate; 203. Soft pad; 204. Fixing bolt; 3. Cleanroom mechanism; 301. Air blower; 302. Diffusion rack; 303. Electric actuator one; 304. Enclosed rack 305. Sloping block; 4. Dust collection mechanism; 401. Fixing rod; 402. Arc plate; 403. Extension frame; 404. Flow guide frame; 405. Restriction strip; 5. Blowering mechanism; 501. Fan; 502. Electric push rod II; 503. Sealing cover; 504. Variable block plate; 6. Cleaning mechanism; 601. Pull rod; 602. Scraper; 7. Connecting mechanism; 701. Connecting plate; 702. Support frame. Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0022] Please see Figures 1-8 As shown, the present invention relates to a laminar flow cleanroom with variable air volume and a method for varying the air volume, comprising a main body 1 and a connecting mechanism 7, wherein the connecting mechanism 7 is disposed on the front and rear walls of the main body 1, and further comprising: Cleanroom 3 is located on the outer wall of the main body 1. Cleanroom 3 includes a blower 301, which is fixedly connected to the left side of the main body 1. A diffuser 302 is fixedly connected to the output end of the blower 301. The diffuser 302 is located inside the main body 1. An electric push rod 303 is fixedly connected to the side of the blower 301 away from the diffuser 302. A sealing frame 304 is fixedly connected to the output end of the electric push rod 303. A sloped block 305 is fixedly connected to the inner wall of the sealing frame 304 away from the blower 301. When the blower 301 is activated, air is drawn in and filtered. The air is then transmitted into the main body 1 through the diffuser 302. The two cleanrooms 3 blow air into the personnel inside the main body 1 to remove dust. The main body 1 includes a closed door 101, which is hinged to the front and back of the main body 1. Connection ports 102 are provided on the left and right sides of the main body 1. Sealing grooves 103 are provided on the inner walls of the four corners of the main body 1. Mounting holes 106 are provided through the inner walls of the sealing grooves 103. Fitting grooves 104 are provided on the inner walls of the left and right sides of the main body 1. Mounting grooves 105 are provided on the inner wall of the top of the main body 1. Dust collection holes 107 are provided through the bottom of the main body 1. The cleanroom mechanism 3 can be easily installed through the connection ports 102. After entering the interior of the main body 1, the closed door 101 is closed to make the interior of the main body 1 sealed. The mounting mechanism 2 includes a support plate 201, which is inserted into the mounting hole 106. A sealing plate 202 is fixedly connected to the right side of the support plate 201. The outer wall of the sealing plate 202 fits into the inner wall of the sealing groove 103. A groove is opened on the right side of the sealing plate 202, and a soft pad 203 is inserted into the groove on the right side of the sealing plate 202. Several insertion holes are opened through the inside of the support plate 201, and fixing bolts 204 are inserted into the several insertion holes opened inside the support plate 201. The position of the main body 1 is adjusted so that the support plate 201 is inserted into the mounting hole 106, so that the end of the support plate 201 away from the main body 1 is connected to the wall or the fixing frame. The sealing plate 202 is fixed in the sealing groove 103 by bolts. The support plate 201 is pre-tightened to facilitate subsequent installation. Then, the fixing bolts 204 are inserted into the support plate 201 and threadedly installed with the wall or the fixing frame, so that the main body 1 is fixed by the support plate 201. There are two cleanroom units 3, which are symmetrically distributed around the main body 1. The outer wall of the diffuser frame 302 is fitted into the fitting groove 104. There are four electric push rods 303, which are evenly distributed. The inner wall of the sealing frame 304 is sleeved with the outer wall of the blower 301. There are several sloped blocks 305, which are set corresponding to the air inlet of the blower 301. The sloped blocks 305 are sloping in shape. The electric push rods 303 drive the sealing frame 304 to retract, so that the sloped blocks 305 enter the air inlet of the blower 301 and block the air inlet of the blower 301. The sloped shape of the blocks 305 gradually blocks the air inlet, so that the gas entering the blower 301 gradually decreases, thereby making the device variable in air volume. A blower mechanism 5 is provided on the top of the main body 1. The blower mechanism 5 includes a blower 501, which is fixedly connected to the top of the main body 1. The air outlet frame of the blower 501 is set inside the mounting slot 105. Four electric push rods 502 are fixedly connected to the top of the blower 501. The four electric push rods 502 are evenly distributed. A sealing cover 503 is fixedly connected to the output end of the four electric push rods 502. A variable blocking plate 504 is fixedly connected to the bottom inner wall of the sealing cover 503. The variable blocking plate 504 has the same shape as the slope block 305. The blower 501 on the top of the main body 1 starts synchronously with the blower 301, and blows the gas vertically downward inside the main body 1, so that the dust is dispersed downward and enters the bottom of the main body 1 through the dust collection hole 107. The connecting mechanism 7 includes a connecting plate 701, which is fixedly connected to the front of the main body 1. A support frame 702 is fixedly connected to the bottom of the connecting plate 701. There are two support frames 702, which are symmetrically distributed around the connecting plate 701. There are two connecting mechanisms 7, which are symmetrically distributed around the main body 1. After the main body 1 is transported to a fixed position, the main body 1 is placed on the ground through the support frame 702 and the connecting plate 701.

[0023] In use, after transporting the main body 1 to a fixed position, place the main body 1 on the ground via the support frame 702 and connecting plate 701. Adjust the position of the main body 1 and insert the support plate 201 into the mounting hole 106, so that the end of the support plate 201 away from the main body 1 is connected to the wall or fixed frame. Then, fix the sealing plate 202 in the sealing groove 103 with bolts and pre-tighten the support plate 201 to facilitate subsequent installation. Then, insert the fixing bolt 204 into the support plate 201 and thread it to the wall or fixed frame, thereby fixing the main body 1 through the support plate 201. Install the four mounting mechanisms 2 at the four corners of the main body 1 to prevent the outer wall of the main body 1 from directly contacting the wall or other fixed objects, so that the main body 1 is suspended after installation, which facilitates the expansion of the cleanroom to install other auxiliary devices. At the same time, it is convenient to install the dust collection mechanism 4 at the bottom of the device. The cleanroom mechanism 3 can be easily installed through the connection port 102. After entering the main body 1, the sealing door 101 is closed to seal the interior of the main body 1. The blower 301 is started to draw in air and filter it. The air is then transmitted into the main body 1 through the diffuser 302. Two cleaning mechanisms 3 blow air into the personnel inside the main body 1 to remove dust. At the same time, the fan 501 on the top of the main body 1 starts synchronously with the blower 301, blowing air vertically downwards inside the main body 1 to disperse the dust downwards. The dust then enters the bottom of the main body 1 through the dust collection hole 107. The electric push rod 303 drives the sealing frame 304 to retract, causing the sloped block 305 to enter the air inlet of the blower 301 and block the air inlet. The sloped shape of the block 305 gradually blocks the air inlet, reducing the amount of air entering the blower 301. This allows the device to achieve variable airflow. Example

[0024] Please see Figures 1-8 As shown, it also includes a dust collection mechanism 4, which is located at the bottom of the main body 1. The dust collection mechanism 4 includes a fixing rod 401, which is fixedly connected to the bottom of the main body 1. An arc plate 402 is fixedly connected to the bottom of the fixing rod 401. An extension frame 403 is fixedly connected to both the front and back of the arc plate 402. A guide frame 404 is fixedly connected to the back of the extension frame 403. A limiting strip 405 is fixedly connected to the inner wall of the guide frame 404. Dust enters the bottom of the arc plate 402 along the trajectory of the guide frame 404. When backflow occurs, it is restricted by the limiting strip 405, so that the dust that flows back along the guide frame 404 falls back into the bottom of the arc plate 402. When a negative pressure is generated inside the lower part of the main body 1, it prevents the dust that has entered the bottom of the main body 1 from being sucked into the interior of the main body 1. There are several fixed rods 401, which are distributed at equal intervals. The arc plate 402 is distributed correspondingly to the dust collection hole 107. There are two flow guides 404, which are symmetrically distributed with the arc plate 402 as the center. The flow guides 404 are arc-shaped. When the dust inside the main body 1 enters the bottom of the main body 1 through the dust collection hole 107, the gas carries the dust to disperse to both sides along the surface of the arc plate 402 and enters the interior of the flow guide 404. A cleaning mechanism 6 is provided on the inner wall of the arc plate 402. A pull rod 601 is slidably connected to the inner wall of the cleaning mechanism 6. A scraper 602 is fixedly connected to the front of the pull rod 601. There are two scrapers 602, which are symmetrically distributed around the pull rod 601. The end of the scraper 602 away from the scraper 602 receives a shrink tube. A groove is opened in front of the device. Pulling the scraper 602 will drive the pull rod 601 to scrape at the bottom of the arc plate 402, thereby facilitating the cleaning of dust.

[0025] In use, when dust inside the main body 1 enters the bottom of the main body 1 through the dust collection hole 107, the gas carries the dust to disperse to both sides along the surface of the arc plate 402 and enters the interior of the guide frame 404. Following the trajectory of the guide frame 404, the dust enters the bottom of the arc plate 402. When backflow occurs, it is restricted by the limiting strip 405, so that the dust that flows back along the guide frame 404 falls back into the bottom of the arc plate 402. When a negative pressure is generated inside the main body 1, it prevents the negative pressure from sucking the dust that has entered the bottom of the main body 1 into the main body 1. A groove is opened at the front of the device, and the scraper 602 is pulled to drive the pull rod 601 to scrape at the bottom of the arc plate 402, thereby facilitating the cleaning of dust.

[0026] A laminar flow cleanroom with variable air volume and its variable air volume method, the steps of which are as follows: S1: After transporting the main body 1 to a fixed position, place the main body 1 on the ground via the support frame 702 and the connecting plate 701. Adjust the position of the main body 1 and insert the support plate 201 into the mounting hole 106. Connect the end of the support plate 201 away from the main body 1 to the wall or the fixed frame. Fix the sealing plate 202 in the sealing groove 103 with bolts. Pre-tighten the support plate 201. Then insert the fixing bolt 204 into the support plate 201 and thread it to the wall or the fixed frame. Fix the main body 1 via the support plate 201. Install the four mounting mechanisms 2 at the four corners of the main body 1 so that the main body 1 is suspended after installation. Install the dust collection mechanism 4 at the bottom of the device. The installation mechanism 2 facilitates the installation of the cleanroom mechanism 3. S2: After the cleanroom is installed, enter the main body 1 and close the sealing door 101 to make the interior of the main body 1 sealed. Start the blower 301 to draw in air and filter the air at the same time. The air is then transmitted into the main body 1 through the diffuser 302. At the same time, the fan 501 on the top of the main body 1 starts synchronously with the blower 301 and blows the air vertically downward inside the main body 1 to disperse the dust downwards. The dust then enters the bottom of the main body 1 through the dust collection hole 107. S3: The electric actuator 303 drives the closed frame 304 to retract, so that the slope block 305 enters the air inlet of the blower 301 and blocks the air inlet of the blower 301. The slope shape of the slope block 305 gradually blocks the air inlet, so that the gas entering the blower 301 gradually decreases. S4: When the dust inside the main body 1 enters the bottom of the main body 1 through the dust collection hole 107, the gas carries the dust to disperse to both sides along the surface of the arc plate 402 and enters the interior of the guide frame 404. The dust enters the bottom of the arc plate 402 along the trajectory of the guide frame 404. When backflow occurs, it is restricted by the limiting strip 405, so that the dust that flows back along the guide frame 404 falls back into the bottom of the arc plate 402. A groove is opened in front of the device, and the scraper 602 is pulled to drive the pull rod 601 to scrape the bottom of the arc plate 402.

[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A laminar flow cleanroom with variable air volume, comprising a main body (1) and a connecting mechanism (7), said connecting mechanism (7) being disposed on the front and rear walls of the main body (1), characterized in that, Also includes: Cleanroom mechanism (3), the cleanroom mechanism (3) is set on the outer wall of the main body (1), the cleanroom mechanism (3) includes a blower (301), the blower (301) is fixedly connected to the left side of the main body (1), the output end of the blower (301) is fixedly connected to a diffuser frame (302), the diffuser frame (302) is set inside the main body (1), the side of the blower (301) away from the diffuser frame (302) is fixedly connected to an electric push rod (303), the output end of the electric push rod (303) is fixedly connected to a sealing frame (304), the inner wall of the sealing frame (304) away from the blower (301) is fixedly connected to a sloped block (305). A dust collection mechanism (4) is provided at the bottom of the main body (1). The dust collection mechanism (4) includes a fixing rod (401), which is fixedly connected to the bottom of the main body (1). An arc plate (402) is fixedly connected to the bottom of the fixing rod (401). An extension frame (403) is fixedly connected to both the front and back of the arc plate (402). A flow guide frame (404) is fixedly connected to the back of the extension frame (403). A limiting strip (405) is fixedly connected to the inner wall of the flow guide frame (404). The main body (1) It includes a closed door (101), which is hinged to the front and back of the main body (1). The main body (1) has connection ports (102) on the left and right sides. The main body (1) has a closed groove (103) on the inner wall of each of the four corners. The inner wall of the closed groove (103) has a through mounting hole (106). The inner wall of the main body (1) has a fitting groove (104) on the left and right sides. The inner wall of the top of the main body (1) has a mounting groove (105). The bottom of the main body (1) has a through dust collection hole (107). The mounting mechanism (2) includes a support plate (201), which is inserted into the mounting hole (106). A sealing plate (202) is fixedly connected to the right side of the support plate (201). The outer wall of the sealing plate (202) fits into the inner wall of the sealing groove (103). A groove is provided on the right side of the sealing plate (202). A soft pad (203) is inserted into the groove on the right side of the sealing plate (202). Several insertion holes are provided through the inside of the support plate (201). Fixing bolts (204) are inserted into the several insertion holes provided inside the support plate (201). The main body (1) is provided with a blower mechanism (5) at the top. The blower mechanism (5) includes a blower (501). The blower (501) is fixedly connected to the top of the main body (1). The air outlet frame of the blower (501) is set inside the mounting groove (105). Four electric push rods (502) are fixedly connected to the top of the blower (501). The four electric push rods (502) are evenly distributed. The output ends of the four electric push rods (502) are fixedly connected to a sealing cover (503). A variable blocking plate (504) is fixedly connected to the bottom inner wall of the sealing cover (503). The variable blocking plate (504) has the same shape as the slope block (305). There are two cleanroom mechanisms (3), and the two cleanroom mechanisms (3) are symmetrically distributed around the main body (1). The outer wall of the diffuser frame (302) is fitted with the fitting groove (104). There are four electric push rods (303), and the four electric push rods (303) are distributed at equal distances. The inner wall of the sealing frame (304) is sleeved with the outer wall of the blower (301). There are several slope-shaped blocks (305), and the several slope-shaped blocks (305) are set corresponding to the air inlet of the blower (301). The slope-shaped blocks (305) are sloping. The connecting mechanism (7) includes a connecting plate (701), which is fixedly connected to the front of the main body (1). A support frame (702) is fixedly connected to the bottom of the connecting plate (701). There are two support frames (702), which are symmetrically distributed around the connecting plate (701). There are two connecting mechanisms (7), which are symmetrically distributed around the main body (1).

2. The laminar flow cleanroom with variable air volume according to claim 1, characterized in that: There are several fixed rods (401), which are distributed at equal intervals. The arc plate (402) is distributed in correspondence with the dust collection hole (107). There are two flow guides (404), which are symmetrically distributed with the arc plate (402) as the center. The flow guides (404) are arc-shaped.

3. A laminar flow cleanroom with variable air volume according to claim 2, characterized in that: The inner wall of the arc plate (402) is provided with a cleaning mechanism. A pull rod (601) is slidably connected to the inner wall of the cleaning mechanism. A scraper (602) is fixedly connected to the front of the pull rod (601). There are two scrapers (602), which are symmetrically distributed with the pull rod (601) as the center. The end of the scraper (602) away from the scraper (602) receives a shrinkage device.

4. A method for variable air volume in a laminar flow cleanroom as described in claim 3, comprising the following steps: S1: After transporting the main body (1) to a fixed position, place the main body (1) on the ground through the support frame (702) and the connecting plate (701). Adjust the position of the main body (1) and insert the support plate (201) into the mounting hole (106). Connect the end of the support plate (201) away from the main body (1) to the wall or the fixed frame. Fix the sealing plate (202) in the sealing groove (103) with bolts. Pre-tighten the support plate (201). Then insert the fixing bolt (204) into the support plate (201) and thread it to the wall or the fixed frame. Fix the main body (1) through the support plate (201). Install the four mounting mechanisms (2) at the four corners of the main body (1) so that the main body (1) is suspended after installation. Install the dust collection mechanism (4) at the bottom of the main body (1). The installation mechanism (2) facilitates the installation of the cleanroom mechanism (3). S2: After the clean room is installed, enter the main body (1), close the closed door (101) to make the inside of the main body (1) sealed, start the blower (301) to draw in air and filter the air through the blower (301), so that the gas is transmitted into the main body (1) through the diffuser (302). At the same time, the fan (501) on the top of the main body (1) starts synchronously with the blower (301) to blow the gas vertically downward inside the main body (1), so that the dust is dispersed downward and the dust enters the bottom of the main body (1) through the dust collection hole (107). S3: The electric actuator (303) drives the closed frame (304) to retract, so that the slope block (305) enters the air inlet of the blower (301) to block the air inlet of the blower (301). The slope shape of the slope block (305) gradually blocks the air inlet, so that the gas entering the blower (301) gradually decreases. S4: When the dust inside the main body (1) enters the bottom of the main body (1) through the dust collection hole (107), the gas drives the dust to disperse to both sides along the surface of the arc plate (402) and enters the interior of the guide frame (404). The dust enters the bottom of the arc plate (402) along the trajectory of the guide frame (404). When backflow occurs, it is restricted by the limiting strip (405) so that the dust that flows back along the guide frame (404) falls back into the bottom of the arc plate (402). The scraper (602) is pulled to drive the pull rod (601) to scrape the bottom of the arc plate (402).

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