A laboratory computer room ventilation and dust removal device and its dust removal method

Abstract

This invention discloses a laboratory computer room ventilation and dust removal device and its dust removal method. The device includes a housing, primarily composed of an air inlet section and an air outlet section. The air inlet section is vertically arranged, and the air outlet section is horizontally connected to its front side near the top, forming an L-shaped air duct between the two sections. A first planetary gear set is installed at the top of the air inlet section, and a sleeve is fixedly connected to the top of the air outlet section near the air inlet section. This invention relates to the field of laboratory computer room ventilation technology. This laboratory computer room ventilation and dust removal device and its dust removal method, through its designed dust removal components, can simultaneously clean the annular filter screen during the operation of the device. This effectively prevents the annular filter screen from clogging due to prolonged use, thereby significantly extending the service life of the laboratory computer room ventilation and dust removal device and reducing its maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of laboratory computer room ventilation technology, and more specifically, to a laboratory computer room ventilation and dust removal device and a dust removal method thereof. Background Technology

[0002] Laboratory computer rooms are spaces specifically designed for computer teaching and research. They are typically equipped with multiple computers and related equipment to support the learning and experimental needs of students and teachers. The ventilation design of a laboratory computer room is crucial, directly impacting the safety, comfort, and proper operation of the equipment. A good ventilation system effectively removes harmful gases and controls temperature and humidity, thus providing a healthy working environment for laboratory personnel.

[0003] In the existing technology, because dust is mixed in with the air, it is inevitable that dust from the outside will be blown into the laboratory computer room when it is ventilated. The equipment in the laboratory computer room is usually high-precision electronic equipment, and the accumulation of dust and particulate matter may cause problems such as overheating and electrostatic discharge, thereby damaging the internal components.

[0004] Therefore, when ventilating a laboratory computer room, dust removal filters are usually installed in the ventilation equipment. As the filter is used for a longer period of time, it will gradually become clogged, affecting subsequent ventilation. Clogged filters will also affect the dust removal effect, resulting in the need to replace the filter frequently when using the ventilation equipment.

[0005] Therefore, those skilled in the art have provided a laboratory computer room ventilation and dust removal device and a dust removal method thereof to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a ventilation and dust removal device and a dust removal method for a laboratory computer room, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] According to one aspect of the invention, a ventilation and dust removal device for a laboratory computer room is provided.

[0009] The laboratory room ventilation and dust removal equipment includes a shell, which is mainly composed of an air inlet section and an air outlet section. The air inlet section is set vertically, and the air outlet section is horizontally connected to the front side of the air inlet section near the top, so that the air inlet section and the air outlet section form an L-shaped air duct. The top of the air inlet section is equipped with a first planetary gear set, and the top of the air outlet section is fixedly connected to the shell near the air inlet section.

[0010] The fan is installed at the outlet of the air outlet section;

[0011] The dust removal assembly includes an annular filter, a brush, a connecting shaft, and a linear unit. The annular filter is rotatably mounted on the top of the air inlet section. The connecting shaft is vertically mounted on the central axis of the annular filter. The tops of the annular filter and the connecting shaft are fixedly connected to the ring gear and the sun gear of the first planetary gear set, respectively. A spline groove is machined on the connecting shaft inside the annular filter, and the brush is slidably connected to it. A circular groove is formed on the top of the connecting shaft and the sun gear of the first planetary gear set. A linear unit for driving the brush to move linearly is connected to the groove through the second planetary gear set. A first turbine is fixedly connected to the bottom of the connecting shaft.

[0012] The backflush assembly includes a ball screw, a pressure plate, and a compression spring. The top end of the ball screw is rotatably connected to the inner top wall of the housing, and the bottom end of the ball screw is connected to the gear ring of the first planetary gear set through a transmission unit. A one-way bearing is rotatably connected to the middle of the pressure plate through a torque protector. The inner wall of the one-way bearing is connected to the ball groove of the ball screw through a ball. A compression spring is fixedly connected between the top of the pressure plate and the housing.

[0013] Furthermore, an annular groove is formed at the top of the inner wall of the air inlet section near the inlet of the air outlet section, and the bottom of the annular filter is in contact with the bottom of the annular groove.

[0014] Furthermore, the brush screen component includes an inner ring and an outer ring. The inner ring is slidably connected to the connecting shaft. The outer ring is connected to the outer wall of the inner ring through a support rod. The outer ring has bristles evenly distributed on its outer peripheral wall that are in contact with the annular filter screen.

[0015] Furthermore, the linear unit includes a pressure cylinder, a piston, a driven shaft, and a second turbine. The top of the pressure cylinder is fixedly connected to the planetary carrier of the first planetary gear set. A pressure chamber is opened inside the pressure cylinder, and a spacer is vertically connected inside the pressure chamber. A piston is slidably arranged between the outer wall of the spacer and the inner wall of the pressure chamber.

[0016] The spacer divides the pressure chamber into an inner chamber and an outer chamber. The top and bottom of the spacer are provided with through slots to connect the inner and outer chambers. The driven shaft is rotatably disposed in the inner chamber. A second turbine is fixedly connected to the outer wall of the driven shaft. Limiting rods are connected to both sides of the driven shaft on the second turbine. The limiting rods pass through the through slots and contact the inner wall of the pressure chamber.

[0017] Furthermore, a permanent magnet is embedded in the outer wall of the piston, and a permanent magnet is embedded in the inner ring, which is attracted to the permanent magnet.

[0018] Furthermore, the ring gear of the second planetary gear set is fixedly connected to the inner wall of the circular groove, the planet carrier of the second planetary gear set is fixedly connected to the bottom of the pressure cylinder, and the bottom end of the driven shaft extends out of the pressure cylinder and is inserted into the sun gear of the second planetary gear set.

[0019] Furthermore, a circular hole is provided on the side of the limiting rod away from the driven shaft, and a second ball is slidably disposed in the circular hole. A support spring is fixedly connected between the second ball and the circular hole.

[0020] Furthermore, the transmission unit includes a pulley, which is fixedly connected to the bottom end of the ball screw. The outer peripheral wall of the pulley and the outer peripheral wall of the gear ring of the first planetary gear set are both provided with belt grooves and are connected by belt drive.

[0021] Furthermore, the bottom of the air outlet section is located directly below the casing and gradually slopes downward from the outside to the inside to form an inclined surface.

[0022] According to another aspect of the present invention, a method for ventilation and dust removal in a laboratory computer room is provided for use with the aforementioned laboratory computer room ventilation and dust removal equipment.

[0023] The ventilation and dust removal method for the laboratory computer room includes the following steps:

[0024] S101, turn on the fan to create negative pressure inside the casing;

[0025] S102, airflow enters through the air inlet section of the casing and simultaneously drives the first turbine to rotate;

[0026] S103, the first turbine cleans the annular filter screen by carrying the brush screen component through the connecting shaft;

[0027] S104, while the connecting shaft rotates, it will drive the backflush component to store energy through the first planetary gear set;

[0028] S105, After ventilation is completed, turn off the fan to eliminate the negative pressure inside the casing;

[0029] S106, the backflush assembly is released, creating positive pressure inside the housing to backflush the annular filter screen;

[0030] S107, the dust blown off falls out of the air inlet section under the action of gravity, completing the dust discharge.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. This laboratory computer room ventilation and dust removal equipment, through the set dust removal components, can clean the annular filter screen simultaneously when the laboratory computer room ventilation and dust removal equipment is running, which can effectively prevent the annular filter screen from clogging the mesh after prolonged use, thereby significantly extending the service life of the laboratory computer room ventilation and dust removal equipment and reducing the maintenance cost of the laboratory computer room ventilation and dust removal equipment;

[0033] 2. This laboratory computer room ventilation and dust removal equipment, through the set back-blowing component, can back-blow the annular filter screen after the ventilation of the laboratory computer room ventilation and dust removal equipment is finished, so as to blow out the dust in the annular filter screen and the dust brushed off by the brushing component from the laboratory computer room ventilation and dust removal equipment, thereby ensuring the cleanliness of the shell and further extending the service life of the laboratory computer room ventilation and dust removal equipment.

[0034] 3. This laboratory computer room ventilation and dust removal method can effectively reduce the difficulty of using laboratory computer room ventilation and dust removal equipment, and enable the laboratory computer room ventilation and dust removal equipment to actively clean the annular filter screen used for dust removal during operation, so as to effectively prevent the annular filter screen from clogging. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in 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.

[0036] Figure 1 This is a schematic diagram of the structure of a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the structure of a dust removal component in a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the movement state of the brush screen component in a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the back-flushing component in a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the movement state of the back-blowing component in a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0042] Figure 7 This is a schematic cross-sectional view of a connecting shaft in a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention.

[0043] Figure 8 This is a schematic diagram of the structure of a linear unit in a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of the structure of a partition sleeve in a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0045] Figure 10 This is a schematic diagram of the internal structure of a limit rod in a laboratory computer room ventilation and dust removal device according to an embodiment of the present invention;

[0046] Figure 11 This is a flowchart of a laboratory computer room ventilation and dust removal method according to an embodiment of the present invention.

[0047] Figure label:

[0048] 1. Housing; 2. Fan; 3. Dust removal assembly; 31. Ring filter; 32. Brush; 321. Inner ring; 322. Outer ring; 323. Support rod; 33. Connecting shaft; 34. Linear unit; 341. Pressure cylinder; 342. Piston; 343. Driven shaft; 344. Second turbine; 345. Spacer; 4. Backflush assembly; 41. Ball screw; 42. Pressure plate; 43. Compression spring; 44. Transmission unit; 441. Pulley; 442. 5. Belt groove; 6. Air inlet section; 7. Air outlet section; 8. First planetary gear set; 9. Housing; 10. Spline groove; 11. Circular groove; 12. Second planetary gear set; 13. First turbine; 14. Torque protector; 15. One-way bearing; 16. Ball bearing 1; 17. Annular groove; 18. Pressure chamber; 19. Through groove; 20. Limiting rod; 21. Permanent magnet 1; 22. Permanent magnet 2; 23. Circular hole; 24. Ball bearing 2; 25. Support spring; 26. Inclined surface. Detailed Implementation

[0049] The present invention will now be further described with reference to the accompanying drawings and specific embodiments:

[0050] Example 1:

[0051] According to one aspect of the invention, a ventilation and dust removal device for a laboratory computer room is provided.

[0052] Reference Figure 1 - Figure 10 The present invention discloses a laboratory computer room ventilation and dust removal device, including a housing 1, which is mainly composed of an air inlet section 5 and an air outlet section 6. The air inlet section 5 is vertically arranged, and the air outlet section 6 is horizontally connected to the front side of the air inlet section 5 near the top, so that an L-shaped air duct is formed between the air inlet section 5 and the air outlet section 6. A first planetary gear set 7 is installed on the top of the air inlet section 5, and a sleeve 8 is fixedly connected to the top of the air outlet section 6 near the air inlet section 5.

[0053] Fan 2 is installed at the outlet of air outlet section 6;

[0054] The dust removal assembly 3 includes an annular filter 31, a brush 32, a connecting shaft 33, and a linear unit 34. The annular filter 31 is rotatably mounted on the top of the air inlet section 5. The connecting shaft 33 is vertically mounted on the central axis of the annular filter 31. The tops of the annular filter 31 and the connecting shaft 33 are fixedly connected to the ring gear and the sun gear of the first planetary gear set 7, respectively. A spline groove 9 is machined on the connecting shaft 33 inside the annular filter 31, and the brush 32, which contacts the annular filter 31, is slidably connected to it. A circular groove 10 is opened on the top of the connecting shaft 33 and the sun gear of the first planetary gear set 7. A linear unit 34 for driving the brush 32 to move linearly is connected to the circular groove 10 through the second planetary gear set 11. A first turbine 12 is fixedly connected to the bottom of the connecting shaft 33.

[0055] The backflush assembly 4 includes a ball screw 41, a pressure plate 42, and a compression spring 43. The top end of the ball screw 41 is rotatably connected to the inner top wall of the housing 8, and the bottom end of the ball screw 41 is connected to the gear ring of the first planetary gear set 7 through a transmission unit 44. The middle part of the pressure plate 42 is rotatably connected to a one-way bearing 14 through a torque protector 13. The inner wall of the one-way bearing 14 is connected to the ball groove of the ball screw 41 through a ball 15. The top of the pressure plate 42 is fixedly connected to the housing 8 with a compression spring 43.

[0056] In this embodiment, observation Figure 1 and Figure 2 It can be seen that by setting up a housing 1 consisting of a vertical air inlet section 5 and a horizontal air outlet section 6, and installing a fan 2 at the outlet position of the air outlet section 6 of the housing 1, negative pressure can be generated inside the housing 1 when the fan 2 is running, thereby drawing outside air into the housing 1 for ventilation of the laboratory machine room.

[0057] Because the air contains dust, the ventilation of the laboratory computer room inevitably blows outside dust into the room. The equipment in the laboratory computer room is usually high-precision electronic equipment, and the accumulation of dust and particulate matter may cause problems such as overheating and electrostatic discharge, thereby damaging the internal components.

[0058] Therefore, combining Figure 2 and Figure 3 It can be seen that by setting an annular filter 31 at the top of the air inlet section 5, a protective area can be formed at the connection between the air inlet section 5 and the air outlet section 6. When the air passes through the air inlet section 5 and enters the air outlet section 6, it is filtered by the annular filter 31, which intercepts the dust in the air and achieves the effect of dust removal, thus providing protection for the laboratory computer room.

[0059] As filter cartridges age, they gradually become clogged, affecting subsequent ventilation. Clogged filters also reduce dust removal efficiency, leading to frequent filter replacements required for ventilation equipment. Therefore, in combination with... Figure 3 , Figure 4 and Figure 7 It can be observed that a first planetary gear set 7 is installed at the top of the air inlet section 5, and a connecting shaft 33 is vertically arranged at the central axis of the annular filter 31. The tops of the annular filter 31 and the connecting shaft 33 are fixedly connected to the gear ring and sun gear of the first planetary gear set 7, respectively. A spline groove 9 is machined on the connecting shaft 33 within the annular filter 31, and a brush part 32 that contacts the annular filter 31 is slidably connected thereto. A circular groove 10 is formed on the top of the connecting shaft 33 and the sun gear of the first planetary gear set 7, and a second planetary gear set passes through the circular groove 10. 11 is connected to a linear unit 34 for driving the brush 32 to move linearly. The bottom of the connecting shaft 33 is fixedly connected to a first turbine 12. The planetary carrier of the first planetary gear set 7 is fixedly connected to the inner top wall of the air inlet section 5. When air is drawn in into the air inlet section 5 due to negative pressure, the high-speed airflow will drive the first turbine 12 to rotate, thereby causing the connecting shaft 33 to rotate. At this time, under the restriction of the spline groove 9, the brush 32, which is slidably set on the outer wall of the connecting shaft 33, will rotate with the connecting shaft 33 to clean the surface of the annular filter screen 31.

[0060] When the connecting shaft 33 rotates, it drives the linear unit 34 to move under the transmission of the second planetary gear set 11, thereby making the brush screen component 32 rotate as if... Figures 3 to 4 The status indicator slides up and down synchronously to thoroughly clean the annular filter 31, effectively improving the cleaning effect.

[0061] Since the tops of the annular filter 31 and the connecting shaft 33 are fixedly connected to the ring gear and the sun gear of the first planetary gear set 7, respectively, and the planet carrier of the first planetary gear set 7 is fixedly connected to the inner top wall of the air inlet section 5, when the connecting shaft 33 rotates, the annular filter 31 will slowly rotate in the opposite direction, thereby increasing the relative rotational linear speed of the brush 32 from the side, thus improving the cleaning efficiency of the brush 32 and further improving the cleaning effect.

[0062] Finally, combining Figure 2 , Figure 5 and Figure 6It can be observed that a sleeve 8 is fixedly connected to the top of the air outlet section 6 of the housing 1 near the air inlet section 5. A ball screw 41 is rotatably connected to the inner top wall of the sleeve 8. A pressure plate 42 is slidably connected to the outer wall of the ball screw 41. A one-way bearing 14 is rotatably connected to the middle of the pressure plate 42 through a torque protector 13. The inner wall of the one-way bearing 14 is connected to the ball groove of the ball screw 41 through a ball 15. A compression spring 43 is fixedly connected between the top of the pressure plate 42 and the sleeve 8. The bottom end of the ball screw 41 is connected to the gear ring of the first planetary gear set 7 through a transmission unit 44. When the gear ring rotates, it will drive the ball screw 41 to rotate through the transmission unit 44. The ball groove of the ball screw 41 pushes the ball 15 to move, thereby causing the one-way bearing 14 to move under force.

[0063] Because the one-way bearing 14 has a one-way locking effect, it cannot rotate relative to the pressure plate 42. The one-way bearing 14 is restricted by the pressure plate 42 and cannot rotate with the ball screw 41. At this time, the ball groove pushes the pressure plate 42 upwards. During the upward movement of the pressure plate 42, the compression spring 43 is compressed and stores energy. Simultaneously, the space at the bottom of the pressure plate 42 increases, allowing more air to be accommodated below the housing 8. Therefore, when the fan 2 is turned off, the negative pressure inside the housing 1 disappears, and the first turbine 12 can no longer rotate with the connecting shaft 33. The ball screw 41 also stops rotating, causing the ball groove to stop pushing the ball 15. This causes the pressure plate 42 and the one-way bearing 14 to lose their locking pressure. At this point, the compression spring 43 applies downward pressure to the pressure plate 42, causing the one-way bearing 14 to tend to move downwards.

[0064] At this time, the ball bearing 15 will move in the opposite direction in the ball groove, changing the relative rotation direction between the one-way bearing 14 and the pressure plate 42, thus unlocking the one-way bearing 14 from the pressure plate 42. Then, under the push of the compression spring 43, the one-way bearing 14 rotates in the opposite direction, causing the pressure plate 42 to press down quickly, thereby squeezing the space below the housing 8 and compressing the air to generate positive pressure.

[0065] When positive pressure is generated inside the housing 1, air will be depressurized through the two openings of the L-shaped air duct of the housing 1, so that the gas inside the housing 1 flows in the opposite direction through the annular filter 31, achieving a back-blowing effect, which blows the dust off the annular filter 31, and also blows off the dust brushed off by the brush 32, allowing the dust to fall out of the housing 1 through the vertical air inlet section 5, achieving the dust removal effect. This allows the ventilation and dust removal equipment to self-clean the inside of the housing 1 after being shut down, which can further prevent the annular filter 31 from being blocked due to dust accumulation.

[0066] Since ventilation is a continuous and lengthy process, the ball screw 41, driven by the transmission unit 44, will continuously push the pressure plate 42 upwards, causing excessive pressure between the ball 15 and the ball groove, resulting in damage. Therefore, to prevent damage to the ball screw 41, the one-way bearing 14 and the pressure plate 42 are connected by a torque protector 13.

[0067] In a further preferred embodiment of the invention, such as Figure 3 and Figure 5 As shown, an annular groove 16 is formed inward at the top of the inner wall of the air inlet section 5 near the inlet of the air outlet section 6, and the bottom of the annular filter screen 31 is in contact with the bottom of the annular groove 16.

[0068] The brush screen component 32 includes an inner ring 321 and an outer ring 322. The inner ring 321 is slidably connected to the connecting shaft 33. The outer wall of the inner ring 321 is connected to the outer ring 322 through a support rod 323. The outer peripheral wall of the outer ring 322 is evenly distributed with bristles that contact the annular filter screen 31.

[0069] In this embodiment, observation Figure 5 It can be observed that by forming an annular groove 16 in the top of the inner wall of the air inlet section 5 near the inlet position of the air outlet section 6, and by making the bottom of the annular filter 31 contact the bottom of the annular groove 16, dust can be prevented from entering the air outlet section 6 through the bottom gap of the annular filter 31. Furthermore, the top of the annular filter 31 is fixedly connected to the gear ring of the first planetary gear set 7, so dust cannot pass through the top of the annular filter 31 either, which can effectively improve the dust filtration effect of the annular filter 31.

[0070] Then looked at Figure 3 It can be seen that the brush screen component 32 is composed of an inner ring 321 and an outer ring 322. The inner ring 321 is slidably connected to the connecting shaft 33. The outer ring 322 is connected to the outer wall of the inner ring 321 through the support rod 323. The outer circumferential wall of the outer ring 322 is evenly distributed with bristles that contact the annular filter screen 31. This allows the brush screen component 32 to clean the surface of the annular filter screen 31 when it rotates, effectively preventing the mesh of the annular filter screen 31 from becoming clogged.

[0071] In a further preferred embodiment of the invention, such as Figure 7 - Figure 9 As shown, the linear unit 34 includes a pressure cylinder 341, a piston 342, a driven shaft 343, and a second turbine 344. The top of the pressure cylinder 341 is fixedly connected to the planet carrier of the first planetary gear set 7. A pressure chamber 17 is provided inside the pressure cylinder 341. A spacer 345 is vertically connected inside the pressure chamber 17. The piston 342 is slidably disposed between the outer wall of the spacer 345 and the inner wall of the pressure chamber 17.

[0072] The spacer 345 divides the pressure chamber 17 into an inner chamber and an outer chamber. The top and bottom of the spacer 345 are provided with through grooves 18 for communicating between the inner and outer chambers. The driven shaft 343 is rotatably disposed in the inner chamber. The outer wall of the driven shaft 343 is fixedly connected to a second turbine 344. Limiting rods 19 are connected to both sides of the driven shaft 343 and the second turbine 344. The limiting rods 19 pass through the through grooves 18 and contact the inner wall of the pressure chamber 17.

[0073] The outer wall of the piston 342 is embedded with a permanent magnet 20, and the inner ring 321 is embedded with a permanent magnet 21 that is attracted to the permanent magnet 20.

[0074] The gear ring of the second planetary gear set 11 is fixedly connected to the inner wall of the circular groove 10, the planet carrier of the second planetary gear set 11 is fixedly connected to the bottom of the pressure cylinder 341, and the bottom end of the driven shaft 343 extends out of the pressure cylinder 341 and is inserted into the sun gear of the second planetary gear set 11.

[0075] In this embodiment, observation Figure 7 - Figure 9 It can be observed that a pressure cylinder 341 is provided in the circular groove 10. The top of the pressure cylinder 341 is fixedly connected to the planetary carrier of the first planetary gear set 7. A pressure chamber 17 is provided inside the pressure cylinder 341. A spacer 345 is vertically connected inside the pressure chamber 17. A piston 342 is slidably arranged between the outer wall of the spacer 345 and the inner wall of the pressure chamber 17. The spacer 345 divides the pressure chamber 17 into an inner cavity and an outer cavity. The top and bottom of the spacer 345 are provided with through grooves 18 for communicating between the inner cavity and the outer cavity. A driven shaft 343 is rotatably arranged in the inner cavity. A second turbine 344 is fixedly connected to the outer wall of the driven shaft 343. Limiting rods 19 are connected to both sides of the driven shaft 343 located on the second turbine 344. The limiting rods 19 pass through the through grooves 18 and contact the inner wall of the pressure chamber 17. A permanent magnet 20 is embedded in the outer wall of the piston 342. A piston 342 is embedded in the inner ring 321. The second permanent magnet 21 is attracted to the first permanent magnet 20. The gear ring of the second planetary gear set 11 is fixedly connected to the inner wall of the circular groove 10. The planet carrier of the second planetary gear set 11 is fixedly connected to the bottom of the pressure cylinder 341. The bottom end of the driven shaft 343 extends out of the pressure cylinder 341 and is inserted into the sun gear of the second planetary gear set 11. When the connecting shaft 33 rotates, the connecting shaft 33 will rotate the gear ring of the second planetary gear set 11. When the planet gears of the second planetary gear set 11 are restricted from revolving by the pressure cylinder 341, the sun gear will rotate rapidly under the transmission of the planet gears, so that the driven shaft 343 inserted with the sun gear will rotate at high speed. At this time, the second turbine 344 installed on the driven shaft 343 will push the fluid in the inner cavity to flow rapidly downward, increasing the liquid below the piston 342, and thus pushing the piston 342 upward under the push of the liquid.

[0076] Since a permanent magnet 20 is installed inside the piston 342, and a permanent magnet 21 that is attracted to the permanent magnet 20 is connected inside the inner ring 321, when the piston 342 moves upward, the inner ring 321 will also move upward, thereby achieving the effect of synchronously sliding up and down to improve the cleaning range when the brush part 32 rotates to clean the annular filter screen 31.

[0077] As piston 342 gradually moves upward, it will gradually approach the top of driven shaft 343. When piston 342 is pushed by the liquid and squeezes the limit rod 19 at the top of driven shaft 343, the limit rod 19 will pull the driven shaft 343 upward, thereby separating driven shaft 343 from the sun gear of the second planetary gear set 11 and stopping the second turbine 344 from rotating. At this time, piston 342 will lose the support of the liquid.

[0078] When piston 342 loses support, piston 342 will squeeze the liquid downward, causing the liquid to enter the inner cavity through the through groove 18 at the bottom of the spacer 345, and then flow back to the top of piston 342 through the through groove 18 at the top of the inner cavity, so that piston 342 moves down slowly, achieving the effect of resetting brush screen component 32.

[0079] Finally, when the piston 342 moves to the bottom of the pressure chamber 17, the piston 342 will squeeze the limit rod 19 at the bottom of the driven shaft 343, so that the limit rod 19 pulls the driven shaft 343 down and re-inserts it into the sun gear of the second planetary gear set 11, so that the second turbine 344 runs again, causing the piston 342 to move up again, thus achieving the effect of the brush screen component 32 reciprocating up and down.

[0080] In a further preferred embodiment of the invention, such as Figure 10 As shown, the limiting rod 19 has a circular hole 22 on the side away from the driven shaft 343. A ball bearing 23 is slidably disposed in the circular hole 22, and a support spring 24 is fixedly connected between the ball bearing 23 and the circular hole 22.

[0081] In this embodiment, when the piston 342 moves downward under the action of gravity, the driven shaft 343 and the second turbine 344 also move downward under the action of gravity. As a result, before the piston 342 has fully reset, the driven shaft 343 is connected to the sun gear of the second planetary gear set 11 again, which affects the cleaning effect of the brush 32 on the annular filter 31.

[0082] Therefore, observe Figure 10It can be observed that a circular hole 22 is provided on the side of the limiting rod 19 away from the driven shaft 343. A ball bearing 23 is slidably disposed in the circular hole 22. A support spring 24 is fixedly connected between the ball bearing 23 and the circular hole 22. Under the push of the support spring 24, the ball bearing 23 in the limiting rod 19 always presses against the inner wall of the pressure chamber 17, thereby using pressure to provide support for the driven shaft 343 and preventing it from moving downward under the action of gravity, which can effectively ensure the operational stability of the linear unit 34.

[0083] In a further preferred embodiment of the invention, such as Figure 5 As shown, the transmission unit 44 includes a pulley 441, which is fixedly connected to the bottom end of the ball screw 41. The outer peripheral wall of the pulley 441 and the outer peripheral wall of the gear ring of the first planetary gear set 7 are both provided with belt grooves 442 and are connected by belt drive.

[0084] In this embodiment, by fixing a pulley 441 to the bottom end of the ball screw 41, belt grooves 442 are provided on the outer peripheral wall of the pulley 441 and the outer peripheral wall of the gear ring of the first planetary gear set 7, and the pulley 441 is connected by belt drive, so that the first planetary gear set 7 can rotate the ball screw 41 when it is running, thereby ensuring that the back-blowing component 4 can store energy synchronously when the ventilation and dust removal equipment is running, so as to ensure the operational stability of the back-blowing component 4.

[0085] In a further preferred embodiment of the invention, such as Figure 5 As shown, the bottom of the air outlet section 6 is located directly below the housing 8 and gradually slopes downward from the outside to the inside to form an inclined surface 25.

[0086] In this embodiment, by making the bottom of the air outlet section 6 located directly below the housing 8 and gradually tilting downwards from the outside to the inside to form an inclined surface 25, when the pressure plate 42 is released and pushes the air flow, the air is guided to contact the inclined surface 25 and move as far as possible toward the annular filter 31, thereby improving the cleaning effect on the annular filter 31.

[0087] And observation Figure 5 It can also be observed that, due to the setting of the inclined surface 25, the outlet cross section of the air outlet section 6 is smaller, while the cross section of the air inlet section 5 is larger. Therefore, the air flow in the air inlet section 5 is easier. When positive pressure is generated in the housing 1, the air will tend to flow into the space with a larger cross section. Thus, the air will tend to release pressure through the opening of the air inlet section 5, thereby ensuring the cleaning effect on the annular filter 31.

[0088] Example 2:

[0089] According to another aspect of the present invention, a method for ventilation and dust removal in a laboratory computer room is provided for use with the aforementioned laboratory computer room ventilation and dust removal equipment.

[0090] The ventilation and dust removal method for the laboratory computer room includes the following steps:

[0091] S101, turn on the fan 2 to create negative pressure inside the casing 1;

[0092] S102, the airflow enters through the air inlet section 5 of the casing 1 and simultaneously drives the first turbine 12 to rotate;

[0093] S103, the first turbine 12 cleans the annular filter 31 by carrying the brush 32 through the connecting shaft 33;

[0094] S104, while the connecting shaft 33 rotates, it will drive the backflush component 4 to store energy through the first planetary gear set 7;

[0095] S105, After ventilation is completed, turn off fan 2 to eliminate the negative pressure inside casing 1;

[0096] S106, the backflush assembly 4 is released, creating positive pressure inside the housing 1 to backflush the annular filter 31;

[0097] S107, the blown-off dust falls out of the air inlet section 5 under the action of gravity, completing the dust discharge.

[0098] The above-described solution of the present invention can effectively reduce the difficulty of using laboratory computer room ventilation and dust removal equipment, and enable the laboratory computer room ventilation and dust removal equipment to actively clean the annular filter 31 used for dust removal during operation, so as to effectively prevent the annular filter 31 from clogging, thereby significantly extending the service life of the laboratory computer room ventilation and dust removal equipment and reducing the maintenance cost of the laboratory computer room ventilation and dust removal equipment.

[0099] 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 variations 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 ventilation and dust removal device for a laboratory computer room, characterized in that, It includes a housing, which is mainly composed of an air inlet section and an air outlet section. The air inlet section is vertically arranged, and the air outlet section is horizontally connected to the front side of the air inlet section near the top, so that the air inlet section and the air outlet section form an L-shaped air duct. The top of the air inlet section is equipped with a first planetary gear set, and the top of the air outlet section is fixedly connected to the housing near the air inlet section. The fan is installed at the outlet of the air outlet section; The dust removal assembly includes an annular filter, a brush, a connecting shaft, and a linear unit. The annular filter is rotatably mounted on the top of the air inlet section. The connecting shaft is vertically mounted on the central axis of the annular filter. The tops of the annular filter and the connecting shaft are fixedly connected to the ring gear and the sun gear of the first planetary gear set, respectively. A spline groove is machined on the connecting shaft inside the annular filter, and the brush is slidably connected to it. A circular groove is formed on the top of the connecting shaft and the sun gear of the first planetary gear set. A linear unit for driving the brush to move linearly is connected to the groove through the second planetary gear set. A first turbine is fixedly connected to the bottom of the connecting shaft. The backflush assembly includes a ball screw, a pressure plate, and a compression spring. The top end of the ball screw is rotatably connected to the inner top wall of the housing, and the bottom end of the ball screw is connected to the gear ring of the first planetary gear set through a transmission unit. The middle part of the pressure plate is rotatably connected to a one-way bearing through a torque protector. The inner wall of the one-way bearing is connected to the ball groove of the ball screw through a ball. A compression spring is fixedly connected between the top of the pressure plate and the housing. The brush screen component includes an inner ring and an outer ring. The inner ring is slidably connected to the connecting shaft. The outer ring is connected to the outer wall of the inner ring through a support rod. The outer ring has bristles evenly distributed on its outer peripheral wall that are in contact with the annular filter screen. The linear unit includes a pressure cylinder, a piston, a driven shaft, and a second turbine. The top of the pressure cylinder is fixedly connected to the planetary carrier of the first planetary gear set. A pressure chamber is opened inside the pressure cylinder, and a spacer is vertically connected inside the pressure chamber. A piston is slidably arranged between the outer wall of the spacer and the inner wall of the pressure chamber. The spacer divides the pressure chamber into an inner chamber and an outer chamber. The top and bottom of the spacer are provided with through slots to connect the inner and outer chambers. The driven shaft is rotatably mounted in the inner chamber. A second turbine is fixedly connected to the outer wall of the driven shaft. Limiting rods are connected to both sides of the driven shaft on the second turbine. The limiting rods pass through the through slots and contact the inner wall of the pressure chamber. The outer wall of the piston is embedded with a permanent magnet one, and the inner ring is embedded with a permanent magnet two that is attracted to the permanent magnet one; The ring gear of the second planetary gear set is fixedly connected to the inner wall of the circular groove, the planet carrier of the second planetary gear set is fixedly connected to the bottom of the pressure cylinder, and the bottom end of the driven shaft extends out of the pressure cylinder and is inserted into the sun gear of the second planetary gear set.

2. The laboratory computer room ventilation and dust removal equipment according to claim 1, characterized in that, The top of the inner wall of the air inlet section is recessed near the inlet of the air outlet section to form an annular groove, and the bottom of the annular filter screen contacts the bottom of the annular groove.

3. The laboratory computer room ventilation and dust removal equipment according to claim 2, characterized in that, The limiting rod has a circular hole on the side away from the driven shaft, and a second ball is slidably disposed in the circular hole. A support spring is fixedly connected between the second ball and the circular hole.

4. The laboratory computer room ventilation and dust removal equipment according to claim 3, characterized in that, The transmission unit includes a pulley, which is fixedly connected to the bottom end of the ball screw. The outer peripheral wall of the pulley and the outer peripheral wall of the gear ring of the first planetary gear set are both provided with belt grooves and are connected by belt drive.

5. A laboratory computer room ventilation and dust removal device according to claim 4, characterized in that, The bottom of the air outlet section is located directly below the casing and gradually slopes downward from the outside to the inside to form an inclined surface.

6. A method for ventilation and dust removal in a laboratory computer room, characterized in that, The laboratory computer room ventilation and dust removal equipment according to claim 5 includes the following steps: S101, turn on the fan to create negative pressure inside the casing; S102, airflow enters through the air inlet section of the casing and simultaneously drives the first turbine to rotate; S103, the first turbine cleans the annular filter screen by carrying the brush screen component through the connecting shaft; S104, while the connecting shaft rotates, it will drive the backflush component to store energy through the first planetary gear set; S105, After ventilation is completed, turn off the fan to eliminate the negative pressure inside the casing; S106, the backflush assembly is released, creating positive pressure inside the housing to backflush the annular filter screen; S107, the dust blown off falls out of the air inlet section under the action of gravity, completing the dust discharge.

Images