Clean room exhaust device

Abstract

This utility model discloses a cleanroom exhaust device, including a wall, a dustproof panel, and a protective mesh panel. An exhaust pipe is installed within the wall. The dustproof panel has slots on two opposite surfaces, and the exhaust pipe has movable grooves on two opposite surfaces of its inner front wall. A hollow tube is installed on one side of the inner wall of the movable groove, and a sleeve is fitted around the periphery of the hollow tube. A first spring is installed inside the hollow tube on one side of the inner wall of the movable groove. This utility model secures the dustproof panel by inserting it into the exhaust pipe, with a locking block engaging with the slot to fix the panel. The first spring pushes the locking block back to its original position, ensuring the dustproof panel is fixed. When dust accumulates on the surface of the dustproof panel after prolonged use, pulling the pull plates to both sides pushes the sleeve to compress the first spring. The sleeve slides around the periphery of the hollow tube, and the pull plates disengage the locking block from the slots, allowing the dustproof panel to be removed from the exhaust pipe for cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation technology, and in particular relates to a ventilation device for cleanrooms. 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. The development of cleanrooms is closely linked to modern industry and cutting-edge technology. Environmental requirements in industries such as precision machinery (e.g., gyroscope and micro-bearing manufacturing) and semiconductors (e.g., large-scale integrated circuit production) have spurred the development of cleanroom technology. Domestic statistics have shown that the yield rate of MOS circuit chips produced in environments without cleanliness requirements is only 10%–15%, and for 64-bit memory chips, it is only 2%. Currently, the application of cleanrooms is quite common in industries such as precision machinery, semiconductors, aerospace, and nuclear energy.

[0003] In existing technology, fans are used to exhaust dust and gas from inside the cleanroom. Generally, dustproof plates are installed on the front and back of the exhaust device. The dustproof plate on the front of the exhaust device can be easily cleaned indoors, but in some cleanrooms in high-rise buildings, the dustproof plate on the back of the exhaust device is inconvenient to clean. Therefore, an exhaust device for cleanrooms is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a ventilation device for cleanrooms to solve existing problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a cleanroom exhaust device, comprising a wall, a dustproof panel, and a protective mesh panel. An exhaust pipe is installed within the wall. The dustproof panel has slots on opposite surfaces. The exhaust pipe has a movable groove on opposite surfaces of its front inner wall. A hollow tube is installed on one side of the movable groove's inner wall, and a sleeve is fitted around the hollow tube. A first spring is installed inside the hollow tube on one side of the movable groove's inner wall. A pull plate is fixedly connected to the right side of the sleeve, and a locking block is installed on the right side of the pull plate. Limiting grooves are opened on opposite surfaces of the protective mesh panel. An adjusting groove is opened on opposite surfaces of the exhaust pipe's rear inner wall. A pull rod is inserted through one side of the adjusting groove's inner wall. A push plate is fixedly connected to the left end of the pull rod, and a limiting block is fixedly connected to the left side of the push plate. A second spring is fitted around the pull rod's periphery.

[0007] Furthermore, a groove is provided on one side of the inner wall of the discharge pipe, a servo motor is provided on the bottom surface of the discharge pipe, a reciprocating screw is rotatably connected in the groove, a slider is inserted through the periphery of the reciprocating screw, a brush plate is provided on one side of the slider, a first pulley is sleeved on the periphery of the bottom end of the reciprocating screw, a third pulley is rotatably connected in the discharge pipe, a second pulley is sleeved on the output end of the servo motor, a second bevel gear is provided at the top of the output end of the servo motor, a fixed frame is provided in the discharge pipe, a rotating rod is rotatably connected in the fixed frame, a first bevel gear is fixedly connected to the left end of the rotating rod, and a fan blade is fixedly connected to the right end of the rotating rod.

[0008] Furthermore, the first bevel gear meshes with the second bevel gear, the third pulley and the second pulley are fitted with belts on their peripheral sides and connected by belts, the third pulley and the first pulley are fitted with belts on their peripheral sides and connected by belts, the slider is threadedly engaged with the peripheral side of the reciprocating screw, the output end of the servo motor is fixedly connected to the second pulley, and the peripheral side of the bottom end of the reciprocating screw is fixedly connected to the first pulley.

[0009] Furthermore, the shape and size of the locking block are adapted to the locking slot, the free end of the first spring is fixedly connected to the left side of the pull plate, the locking block is engaged with the locking slot, the shape and size of the limiting block are adapted to the limiting groove, the right end of the second spring is fixedly connected to one side of the inner wall of the adjusting groove, the left end of the second spring is fixedly connected to the right side of the push plate, and the limiting block is engaged with the limiting groove.

[0010] This utility model has the following beneficial effects:

[0011] This invention involves inserting a dustproof plate into the discharge pipe. A locking block secures the dustproof plate by engaging with a locking groove. A first spring pushes the locking block back to its original position, ensuring the dustproof plate is fixed. Over time, dust accumulates on the surface of the dustproof plate. Pulling the pull plates to the sides causes them to push a sleeve that compresses the first spring. The sleeve slides along the circumference of the hollow pipe, and the pull plates disengage the locking block from the groove, allowing the dustproof plate to be removed from the discharge pipe for cleaning. Simultaneously, pulling the pull rod retracts the push plate into the adjusting groove, disengaging the limiting block from the limiting groove, thus allowing the protective net to be removed. The plate is removed from the rear of the discharge pipe. The second spring is used to automatically engage the limit block into the limit groove, achieving a quick replacement effect. When the servo motor is started, the output end of the servo motor rotates, driving the second pulley to rotate. The second pulley drives the third pulley to rotate via a belt. The third pulley drives the first pulley to rotate via a belt. The rotation of the first pulley drives the reciprocating screw to rotate. The reciprocating screw, through thread engagement with the slider, drives the brush plate to move up and down. One side of the brush plate brushes is in contact with one side of the protective mesh plate, thus cleaning one side of the protective mesh plate and preventing dust from accumulating on the protective mesh plate.

[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of an exhaust system for a cleanroom.

[0015] Figure 2 A front view of an exhaust system for a cleanroom;

[0016] Figure 3 for Figure 2 Cross-sectional view of section AA;

[0017] Figure 4 for Figure 2 Cross-sectional view of section BB in the middle;

[0018] Figure 5 for Figure 3 Enlarged view of section C;

[0019] Figure 6 for Figure 3 Enlarged view of section D.

[0020] The components represented by each number in the attached diagram are listed below: 1. Wall; 2. Drainage pipe; 201. Servo motor; 202. Slide groove; 203. Reciprocating lead screw; 204. Slider; 205. Brush plate; 206. First pulley; 207. Second pulley; 208. Third pulley; 21. Fixing frame; 210. Rotating rod; 211. Fan blade; 212. First bevel gear; 3. Dustproof plate; 301. Slot; 22. Movable slot; 220. First spring; 221. Pull plate; 222. Locking block; 223. Sleeve; 224. Hollow tube; 4. Protective mesh plate; 401. Limiting slot; 23. Adjusting slot; 230. Pull rod; 231. Push plate; 232. Limiting block; 233. Second spring. Detailed Implementation

[0021] Please see Figure 1 - Figure 6As shown, this utility model is a cleanroom exhaust device, including a wall 1, a dustproof plate 3, and a protective mesh plate 4. An exhaust pipe 2 is installed inside the wall 1. The dustproof plate 3 has slots 301 on opposite surfaces. A movable groove 22 is formed on opposite surfaces of the inner wall of the exhaust pipe 2. A hollow tube 224 is installed on one side of the inner wall of the movable groove 22. A sleeve 223 is fitted around the periphery of the hollow tube 224. A first spring 220 is installed on one side of the inner wall of the movable groove 22 inside the hollow tube 224. A pull plate 221 is fixedly connected to the right side of the sleeve 223. A locking block 222 is installed on the right side of the pull plate 221. Limit grooves 401 are formed on opposite surfaces of the protective mesh plate 4. An adjustment groove 23 is formed on opposite surfaces of the inner wall of the exhaust pipe 2. A limit groove 401 is formed on one side of the inner wall of the adjustment groove 23. A pull rod 230 is inserted through the surface of the discharge pipe 2. A push plate 231 is fixedly connected to the left end of the pull rod 230. A limit block 232 is fixedly connected to the left side of the push plate 231. A second spring 233 is sleeved on the circumference of the pull rod 230. A sliding groove 202 is opened on one side of the inner wall of the discharge pipe 2. A servo motor 201 is set on the bottom surface of the discharge pipe 2. A reciprocating screw 203 is rotatably connected in the sliding groove 202. A slider 204 is inserted through the circumference of the reciprocating screw 203. A brush plate 205 is set on one side of the slider 204. A first pulley 206 is sleeved on the circumference of the bottom end of the reciprocating screw 203. A third pulley 208 is rotatably connected in the discharge pipe 2. A second pulley 207 is sleeved on the output end of the servo motor 201. A second bevel gear is set at the top of the output end of the servo motor 201.

[0022] Furthermore, a fixed frame 21 is provided inside the discharge pipe 2, and a rotating rod 210 is rotatably connected inside the fixed frame 21. A first bevel gear 212 is fixedly connected to the left end of the rotating rod 210, and a fan blade 211 is fixedly connected to the right end of the rotating rod 210. The first bevel gear 212 meshes with a second bevel gear. A belt is fitted around the circumference of the third pulley 208 and the second pulley 207 and is connected by the belt. A belt is fitted around the circumference of the third pulley 208 and the first pulley 206 and is connected by the belt. The slider 204 is threadedly engaged with the circumference of the reciprocating screw 203. The output end of the servo motor 201 is fixedly connected to the second pulley 207, and the bottom circumference of the reciprocating screw 203 is fixedly connected to the first pulley 206.

[0023] Furthermore, the shape and size of the locking block 222 are adapted to the locking groove 301, the free end of the first spring 220 is fixedly connected to the left side of the pull plate 221, the locking block 222 is engaged with the locking groove 301, the shape and size of the limiting block 232 are adapted to the limiting groove 401, the right end of the second spring 233 is fixedly connected to one side of the inner wall of the adjusting groove 23, the left end of the second spring 233 is fixedly connected to the right side of the push plate 231, and the limiting block 232 is engaged with the limiting groove 401.

[0024] It should be noted that this utility model fixes the dustproof plate 3 by inserting it into the discharge pipe 2, with the locking block 222 engaging with the locking groove 301. The first spring 220 is used to push the locking block 222 back to its original position, ensuring the dustproof plate 3 is fixed. When dust accumulates on the surface of the dustproof plate 3 after prolonged use, pulling the pull plate 221 to both sides pushes the sleeve 223 to compress the first spring 220. The sleeve 223 slides around the hollow tube 224, and the pull plate 221 causes the locking block 222 to disengage from the locking groove 301, thus removing the dustproof plate 3 from the discharge pipe 2 for cleaning. Simultaneously, pulling the pull rod 230 causes the push plate 231 to retract into the adjusting groove 23, thereby disengaging the limiting block 232 from the limiting groove 401. This allows the protective mesh plate 4 to be removed from the rear of the discharge pipe 2. The second spring 233 is used to automatically engage the limit block 232 into the limit groove 401, achieving a quick replacement effect. When the servo motor 201 is started, the output end of the servo motor 201 rotates, driving the second pulley 207 to rotate. The second pulley 207 drives the third pulley 208 to rotate via a belt. The third pulley 208 drives the first pulley 206 to rotate via a belt. The rotation of the first pulley 206 drives the reciprocating screw 203 to rotate. The reciprocating screw 203, through its threaded engagement with the slider 204, drives the brush plate 205 to move up and down. The brush side of the brush plate 205 is in contact with one side of the protective mesh plate 4, thus cleaning one side of the protective mesh plate 4 and preventing dust from accumulating on the protective mesh plate 4.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. 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 this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cleanroom exhaust system, comprising a wall (1), a dustproof panel (3), and a protective mesh panel (4), characterized in that: The wall (1) is equipped with a discharge pipe (2). The dustproof plate (3) has slots (301) on its two opposite surfaces. The inner wall of the discharge pipe (2) has a movable groove (22) on its two opposite surfaces. A hollow tube (224) is provided on one side of the inner wall of the movable groove (22). A sleeve (223) is fitted around the periphery of the hollow tube (224). A first spring (220) is provided on one side of the inner wall of the movable groove (22) inside the hollow tube (224). A pull plate is fixedly connected to the right side of the sleeve (223). 221), a locking block (222) is provided on the right side of the pull plate (221), a limiting groove (401) is opened on the two opposite surfaces of the protective mesh plate (4), an adjustment groove (23) is opened on the two opposite surfaces of the rear inner wall of the discharge pipe (2), a pull rod (230) is inserted through one side of the inner wall of the adjustment groove (23), a push plate (231) is fixedly connected to the left end of the pull rod (230), a limiting block (232) is fixedly connected to the left side of the push plate (231), and a second spring (233) is sleeved on the periphery of the pull rod (230).

2. The exhaust system for a cleanroom according to claim 1, characterized in that, A groove (202) is provided on one side of the inner wall of the discharge pipe (2). A servo motor (201) is provided on the bottom surface of the discharge pipe (2). A reciprocating screw (203) is rotatably connected in the groove (202). A slider (204) is inserted through the periphery of the reciprocating screw (203). A brush plate (205) is provided on one side of the slider (204). A first pulley (206) is sleeved on the periphery of the bottom end of the reciprocating screw (203). A third pulley (208) is rotatably connected in the discharge pipe (2). A second pulley (207) is sleeved on the output end of the servo motor (201). A second bevel gear is provided at the top of the output end of the servo motor (201).

3. The exhaust system for a cleanroom according to claim 1, characterized in that, A fixed frame (21) is provided inside the discharge pipe (2). A rotating rod (210) is rotatably connected inside the fixed frame (21). A first bevel gear (212) is fixedly connected to the left end of the rotating rod (210), and a fan blade (211) is fixedly connected to the right end of the rotating rod (210).

4. The exhaust system for a cleanroom according to claim 3, characterized in that, The first bevel gear (212) meshes with the second bevel gear. The third pulley (208) and the second pulley (207) are fitted with belts on their peripheral sides and are connected by belts. The third pulley (208) and the first pulley (206) are fitted with belts on their peripheral sides and are connected by belts. The slider (204) is threadedly engaged with the peripheral side of the reciprocating screw (203). The output end of the servo motor (201) is fixedly connected to the second pulley (207). The bottom peripheral side of the reciprocating screw (203) is fixedly connected to the first pulley (206).

5. The exhaust system for a cleanroom according to claim 1, characterized in that, The shape and size of the card block (222) are adapted to the card slot (301), the free end of the first spring (220) is fixedly connected to the left side of the pull plate (221), and the card block (222) is engaged with the card slot (301).

6. The exhaust system for a cleanroom according to claim 1, characterized in that, The limiting block (232) is in shape and size adapted to the limiting groove (401), the right end of the second spring (233) is fixedly connected with one side of the inner wall of the adjusting groove (23), the left end of the second spring (233) is fixedly connected with the right side of the push plate (231), and the limiting block (232) is clamped and matched with the limiting groove (401).

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