Laboratory machine room ventilation and dust removal equipment and dust removal method thereof

Abstract

The invention discloses laboratory machine room ventilation and dust removal equipment and a dust removal method thereof.The laboratory machine room ventilation and dust removal equipment comprises a shell, the shell is mainly composed of an air inlet section and an air outlet section, the air inlet section is vertically arranged, the air outlet section is horizontally connected to the position, close to the front side of the top, of the air inlet section, and an L-shaped air channel is formed between the air inlet section and the air outlet section; a first planetary gear set is installed at the top of the air inlet section, and a sleeve shell is fixedly connected to the position, close to the air inlet section, of the top of the air outlet section. The invention relates to the technical field of laboratory room ventilation. According to the ventilation and dust removal equipment for the laboratory machine room and the dust removal method of the ventilation and dust removal equipment, through the arranged dust removal assembly, the annular filter screen can be synchronously cleaned when the ventilation and dust removal equipment for the laboratory machine room runs, and the situation that meshes are blocked due to the fact that the annular filter screen is used for a long time can be effectively prevented; therefore, the service life of the laboratory machine room ventilation and dust removal equipment is greatly prolonged, and the maintenance cost of the laboratory machine room ventilation and dust removal equipment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of laboratory machine room ventilation, and in particular to a laboratory machine room ventilation and dust removal equipment and a dust removal method thereof. Background Art

[0002] The laboratory computer room is a space specially set up for computer teaching and research. It is usually equipped with multiple computers and related equipment to support the learning and experimental needs of students and teachers. The ventilation design of the laboratory computer room is very important and directly affects the safety, comfort and normal operation of the laboratory equipment. A good ventilation system can effectively remove harmful gases, control temperature and humidity, and thus provide a healthy working environment for experimenters.

[0003] In the prior art, since dust is mixed in the air, dust from the outside will inevitably be blown into the laboratory room during ventilation. The equipment in the laboratory room is usually high-precision electronic equipment. The accumulation of dust and particulate matter may cause equipment overheating, electrostatic discharge and other problems, thereby damaging internal components.

[0004] Therefore, when ventilating the laboratory room, a filter element for dust removal is usually installed in the ventilation equipment. As the use time of the filter element increases, the filter element will gradually become clogged and affect subsequent ventilation. The clogged filter element will also affect the dust removal effect, resulting in the need for frequent replacement of the filter element when the ventilation equipment is in use.

[0005] Therefore, those skilled in the art provide a laboratory machine room ventilation and dust removal equipment and a dust removal method thereof to solve the problems raised in the above background technology. Summary of the invention

[0006] The object of the present invention is to provide a laboratory machine room ventilation and dust removal equipment and a dust removal method thereof to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

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

[0009] The laboratory machine room ventilation and dust removal equipment includes a shell, which is mainly composed of an air inlet section and an air outlet section, wherein 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 an L-shaped air duct is formed between the air inlet section and the air outlet section, a first planetary gear set is installed on 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;

[0010] A fan, which is installed at the outlet of the air outlet section;

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

[0012] The back-blowing 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 casing, the bottom end of the ball screw is connected to the ring gear 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 hole wall of the one-way bearing is connected to the ball groove of the ball screw through ball one, and a compression spring is fixedly connected between the top of the pressure plate and the casing.

[0013] Furthermore, an annular groove is formed inwardly 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 screen contacts the bottom of the annular groove.

[0014] Furthermore, the brush mesh member includes an inner ring and an outer ring, the inner ring is slidably connected to the connecting shaft, the outer wall of the inner ring is connected to the outer ring via a support rod, and the outer peripheral wall of the outer ring is evenly distributed with bristles that contact the annular filter.

[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 planet carrier of the first planetary gear set, a pressure chamber is opened in the pressure cylinder, a spacer is vertically connected in the pressure chamber, and 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 grooves for connecting the inner chamber and the outer chamber. The driven shaft is rotatably arranged in the inner chamber. The outer wall of the driven shaft is fixedly connected to the second turbine. Limit rods are connected to both sides of the driven shaft located on the second turbine. The limit rods pass through the through grooves and contact the inner wall of the pressure chamber.

[0017] Furthermore, a permanent magnet 1 is embedded in the outer wall of the piston, and a permanent magnet 2 adsorbed to the permanent magnet 1 is embedded in the interior of the inner ring.

[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, the bottom end of the driven shaft extends out of the pressure cylinder and is plugged into the sun gear of the second planetary gear set.

[0019] Furthermore, a round hole is formed on a side of the limiting rod away from the driven shaft, a second ball is slidably arranged in the round hole, and a supporting spring is fixedly connected between the second ball and the round 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 transmission.

[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 laboratory machine room ventilation and dust removal method is provided, which is used for the above-mentioned laboratory machine room ventilation and dust removal equipment.

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

[0024] S101, turning on the fan to generate negative pressure in the housing;

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

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

[0027] S104, while the connecting shaft rotates, it drives the blowback assembly to store energy through the first planetary gear set;

[0028] S105, after the ventilation is completed, the fan is turned off to eliminate the negative pressure in the housing;

[0029] S106, the backflush assembly is released, so that positive pressure is generated in the housing to backflush the annular filter;

[0030] S107, the blown-off dust falls out of the air inlet section due to gravity, completing the dust removal.

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

[0032] 1. The laboratory room ventilation and dust removal equipment can clean the annular filter screen synchronously when the laboratory room ventilation and dust removal equipment is running, through the dust removal component, which can effectively prevent the annular filter screen from being blocked due to long-term use, thereby greatly extending the service life of the laboratory room ventilation and dust removal equipment and reducing the maintenance cost of the laboratory room ventilation and dust removal equipment;

[0033] 2. This kind of laboratory machine room ventilation and dust removal equipment can backflush the annular filter after the ventilation of the laboratory machine room ventilation and dust removal equipment is completed through the backflush component, which is used to blow the dust in the annular filter and the dust brushed by the brush mesh out of the laboratory machine room ventilation and dust removal equipment, thereby ensuring the cleanliness of the shell and further extending the service life of the laboratory machine room ventilation and dust removal equipment.

[0034] 3. This laboratory machine room ventilation and dust removal method can effectively reduce the difficulty of using the laboratory machine room ventilation and dust removal equipment, and enable the laboratory machine room ventilation and dust removal equipment to actively clean the annular filter used for dust removal during operation, so as to effectively prevent the annular filter from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0037] Figure 2 It is a schematic diagram of the right internal stereoscopic structure of a laboratory room ventilation and dust removal device according to an embodiment of the present invention;

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

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

[0040] Figure 5 It is a structural schematic diagram of a backflush component in a laboratory room ventilation and dust removal device according to an embodiment of the present invention;

[0041] Figure 6 is a schematic diagram of the motion state of a backflush component in a laboratory room ventilation and dust removal device according to an embodiment of the present invention;

[0042] Figure 7 It is a cross-sectional structural schematic diagram of a connecting shaft in a laboratory machine room ventilation and dust removal device according to an embodiment of the present invention;

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

[0044] Fig. 9 It is a structural schematic diagram of a partition sleeve in a laboratory room ventilation and dust removal device according to an embodiment of the present invention;

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

[0046] Fig.11 The present invention is a flow chart of a laboratory room ventilation and dust removal method according to an embodiment of the present invention.

[0047] Reference numerals:

[0048] 1. Shell; 2. Fan; 3. Dust removal assembly; 31. Annular filter; 32. Brush mesh; 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. Belt groove; 5. Air inlet section; 6. Air outlet section; 7. First planetary gear set; 8. Housing; 9. Spline groove; 10. Circular groove; 11. Second planetary gear set; 12. First turbine; 13. Torque protector; 14. One-way bearing; 15. Ball one; 16. Annular groove; 17. Pressure chamber; 18. Through groove; 19. Limit rod; 20. Permanent magnet one; 21. Permanent magnet two; 22. Circular hole; 23. Ball two; 24. Support spring; 25. Inclined surface. DETAILED DESCRIPTION

[0049] The present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0050] Embodiment 1:

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

[0052] Reference Figure 1 - Fig.10 The present invention discloses a laboratory machine room ventilation and dust removal device, comprising a housing 1, the housing 1 mainly consisting of an air inlet section 5 and an air outlet section 6, wherein the air inlet section 5 is vertically arranged, and the air inlet section 5 is horizontally connected to the air outlet section 6 at the front position 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] A fan 2 is installed at the outlet of the air outlet section 6;

[0054] The dust removal assembly 3 includes an annular filter 31, a brush mesh member 32, a connecting shaft 33 and a linear unit 34. The annular filter 31 is rotatably arranged at the top of the air inlet section 5. The connecting shaft 33 is vertically arranged at the center axis position of the annular filter 31. The tops of the annular filter 31 and the connecting shaft 33 are respectively fixedly connected to the ring gear and the sun gear of the first planetary gear set 7. The connecting shaft 33 is processed with a spline groove 9 at a position inside the annular filter 31, and is slidably connected with the brush mesh member 32 in contact with the annular filter 31. The top of the connecting shaft 33 and the sun gear of the first planetary gear set 7 are jointly provided with a circular groove 10. A linear unit 34 for driving the brush mesh member 32 to move linearly is connected in the circular groove 10 through the second planetary gear set 11. The bottom of the connecting shaft 33 is fixedly connected to the first turbine 12.

[0055] The back-blowing 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 casing 8, and the bottom end of the ball screw 41 is connected to the ring gear of the first planetary gear set 7 through a transmission unit 44. The middle part of the pressure plate 42 is rotatably connected to the one-way bearing 14 through a torque protector 13. The inner hole 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 casing 8.

[0056] In this embodiment, observe Figure 1 and Figure 2 It can be found that by providing a shell 1 composed 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 shell 1, negative pressure can be generated in the shell 1 when the fan 2 is running, thereby sucking outside air into the shell 1 for ventilating the laboratory room.

[0057] Because there is dust in the air, dust from outside will inevitably be blown into the laboratory room during ventilation. The equipment in the laboratory room is usually high-precision electronic equipment. The accumulation of dust and particulate matter may cause equipment overheating, electrostatic discharge and other problems, thereby damaging internal components.

[0058] So combined Figure 2 and Figure 3 It can be found that by providing an annular filter 31 at the top of the air inlet section 5, a protective area can be formed at the connection point between the air inlet section 5 and the air outlet section 6, so that 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, and the dust in the air is intercepted, thereby achieving the effect of dust removal and providing protection for the laboratory machine room.

[0059] As the filter element is used for a longer time, it will gradually become clogged and affect subsequent ventilation. Clogged filters will also affect the dust removal effect, causing the ventilation equipment to need to be replaced frequently. Figure 3 , Figure 4 and Figure 7 It can be found that the first planetary gear set 7 is installed at the top of the air inlet section 5, and then a connecting shaft 33 is vertically arranged at the central axis position of the annular filter 31. The annular filter 31 and the top of the connecting shaft 33 are respectively fixedly connected to the ring gear and the sun gear of the first planetary gear set 7. The connecting shaft 33 is processed with a spline groove 9 at the position inside the annular filter 31, and is slidably connected with a brush mesh member 32 in contact with the annular filter 31. The top of the connecting shaft 33 and the sun gear of the first planetary gear set 7 are jointly provided with a circular groove 10, and the circular groove 10 passes through the second planetary gear set 11 is connected to a linear unit 34 for driving the brush mesh 32 to move linearly, the bottom of the connecting shaft 33 is fixedly connected to the first turbine 12, and the planetary carrier of the first planetary gear set 7 is fixedly connected to the inner top wall of the air inlet section 5. At this time, when air is sucked into the air inlet section 5 due to negative pressure, the high-speed flowing air will drive the first turbine 12 to rotate, thereby rotating the connecting shaft 33. At this time, under the restriction of the spline groove 9, the brush mesh 32 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 31.

[0060] When the connecting shaft 33 rotates, the linear unit 34 is driven to move under the transmission of the second planetary gear set 11, so that the brush mesh member 32 can rotate as shown in FIG. Figure 3 to Figure 4 The state slides up and down synchronously to fully clean the annular filter 31, effectively improving the cleaning effect.

[0061] Since the top of the annular filter 31 and the connecting shaft 33 are respectively fixedly connected to the ring gear and the sun gear of the first planetary gear set 7, 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 mesh 32 from the side, thereby improving the cleaning efficiency of the brush mesh 32 and further improving the cleaning effect.

[0062] Finally, combine Figure 2 , Figure 5 and Figure 6It can be found that the top of the air outlet section 6 of the shell 1 is fixedly connected to the position near the air inlet section 5, the inner top wall of the shell 8 is rotatably connected to the ball screw 41, the outer wall of the ball screw 41 is slidably connected to the pressure plate 42, the middle part of the pressure plate 42 is rotatably connected to the one-way bearing 14 through the torque protector 13, the inner hole wall of the one-way bearing 14 is connected to the ball groove of the ball screw 41 through the ball 15, and a compression spring 43 is fixedly connected between the top of the pressure plate 42 and the shell 8. The bottom end of the ball screw 41 is connected to the ring gear of the first planetary gear set 7 through the transmission unit 44. At this time, the rotation of the ring gear will drive the ball screw 41 to rotate through the transmission unit 44, and the ball groove of the ball screw 41 is used to push the ball 15 to move, so that the one-way bearing 14 is forced to move.

[0063] Since the one-way bearing 14 has a one-way locking effect, the one-way bearing 14 and the pressure plate 42 cannot rotate relative to each other, so that the one-way bearing 14 is restricted by the pressure plate 42 and cannot rotate with the ball screw 41. At this time, the pressure plate 42 will be pushed upward by the ball groove. In the process of the pressure plate 42 moving upward, the compression spring 43 will be squeezed and stored. At the same time, the space at the bottom of the pressure plate 42 will also increase, so that more air can be accommodated under the sleeve 8. Therefore, when the fan 2 is shut down, the negative pressure in the housing 1 disappears, and the first turbine 12 cannot continue to rotate with the connecting shaft 33, and the ball screw 41 will also stop rotating, so that the ball groove cannot continue to push the ball 15 to move, so that the pressure locking the pressure plate 42 and the one-way bearing 14 disappears. At this time, the compression spring 43 exerts downward pressure on the pressure plate 42, which will cause the one-way bearing 14 to have a downward movement trend.

[0064] At this time, the ball 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, so that the one-way bearing 14 and the pressure plate 42 are unlocked, and then the one-way bearing 14 rotates in the opposite direction under the push of the compression spring 43, and the pressure plate 42 is pressed down rapidly, thereby squeezing the space under the sleeve shell 8, compressing the air to generate positive pressure.

[0065] When positive pressure is generated in the shell 1, the air will release pressure through the two openings of the L-shaped air duct of the shell 1, so that the gas in the shell 1 can flow through the annular filter 31 in the opposite direction, achieving a backblowing effect, which is used to blow off the dust on the annular filter 31, and at the same time, the dust brushed off by the brush mesh 32 will be blown off, allowing the dust to fall out of the shell 1 through the vertical air inlet section 5, thereby achieving a dust removal effect, and allowing the ventilation and dust removal equipment to self-clean the shell 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 long process, the ball screw 41 will continue to push the pressure plate 42 upward under the drive of the transmission unit 44, resulting in excessive pressure between the ball 15 and the ball groove, causing damage. Therefore, in order to prevent the ball screw 41 from being damaged, the one-way bearing 14 and the pressure plate 42 are connected through the torque protector 13.

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

[0068] The brush mesh member 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 via a support rod 323 . The outer peripheral wall of the outer ring 322 is evenly distributed with bristles that contact the annular filter 31 .

[0069] In this embodiment, observe Figure 5 It can be found that by forming an annular groove 16 at the top of the inner wall of the air inlet section 5 near the inlet position of the air outlet section 6, and making the bottom of the annular filter 31 contact with 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, and the top of the annular filter 31 is fixedly connected to the ring gear of the first planetary gear set 7, so dust cannot pass through the top of the annular filter 31, which can effectively improve the dust filtering effect of the annular filter 31.

[0070] Then look at Figure 3 It can be found that the brush mesh 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 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 31. When the brush mesh 32 rotates, it can clean the surface of the annular filter 31 and effectively prevent the mesh of the annular filter 31 from being clogged.

[0071] In a further preferred embodiment of the present invention, Figure 7 - Fig. 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 in the pressure cylinder 341. A spacer 345 is vertically connected to the pressure chamber 17. A piston 342 is slidably provided 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 both provided with through grooves 18 for connecting the inner chamber and the outer chamber. The driven shaft 343 is rotatably arranged in the inner chamber. The outer wall of the driven shaft 343 is fixedly connected to the second turbine 344. The driven shaft 343 is located on both sides of the second turbine 344 and is connected to limit rods 19. The limit 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 1 20, and the inner ring 321 is embedded with a permanent magnet 21 adsorbed by the permanent magnet 1 20;

[0074] The ring gear 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 plugged into the sun gear of the second planetary gear set 11.

[0075] In this embodiment, observe Figure 7 - Fig. 9 It can be found that a pressure cylinder 341 is arranged in the circular groove 10, 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 opened in the pressure cylinder 341, a spacer 345 is vertically connected in 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 chamber and an outer chamber, the top and the bottom of the spacer 345 are provided with a through groove 18 for connecting the inner chamber and the outer chamber, a driven shaft 343 is rotatably arranged in the inner chamber, the outer wall of the driven shaft 343 is fixedly connected to the second turbine 344, the driven shaft 343 is located on both sides of the second turbine 344 and is connected to a limiting rod 19, the limiting rod 19 passes through the through groove 18 and contacts with the inner wall of the pressure chamber 17, the outer wall of the piston 342 is embedded with a permanent magnet 20, and the inner ring 321 is embedded with a The permanent magnet 21 adsorbed by the permanent magnet 1 20, the ring gear 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 plugged into the sun gear of the second planetary gear set 11. At this time, when the connecting shaft 33 rotates, the connecting shaft 33 will rotate with the ring gear of the second planetary gear set 11. When the planetary gears of the second planetary gear set 11 are restricted from orbiting by the pressure cylinder 341, the sun gear will rotate rapidly under the transmission of the planetary gears, thereby causing the driven shaft 343 plugged into the sun gear to rotate at a 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 downward rapidly, thereby increasing the liquid under the piston 342, thereby moving the piston 342 upward under the push of the liquid.

[0076] Since a permanent magnet 20 is provided in the piston 342, and a permanent magnet 21 adsorbed by the permanent magnet 20 is connected to the inner ring 321, when the piston 342 moves upward, the inner ring 321 will also move upward accordingly, so that the brush mesh 32 can rotate to clean the annular filter 31 and slide up and down synchronously to improve the cleaning range.

[0077] As the piston 342 gradually moves upward, the piston 342 will gradually approach the top of the driven shaft 343 until the piston 342 squeezes the limit rod 19 at the top of the driven shaft 343 under the push of the liquid. Under the pull of the limit rod 19, the driven shaft 343 will move upward, thereby separating the 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, the piston 342 will lose the support of the liquid.

[0078] When the piston 342 loses its support, the piston 342 will squeeze the liquid downward, causing the liquid to enter the inner cavity through the groove 18 at the bottom of the spacer 345, and then flow back to the top of the piston 342 through the groove 18 at the top of the inner cavity, so that the piston 342 moves slowly downward, achieving the effect of resetting the brush mesh 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 will pull the driven shaft 343 downward and reinsert it into the sun gear of the second planetary gear set 11, allowing the second turbine 344 to start running again and the piston 342 to move up again, thereby achieving the effect of the brush mesh 32 moving back and forth.

[0080] In a further preferred embodiment of the present invention, Fig.10 As shown, a circular hole 22 is formed on a side of the limiting rod 19 away from the driven shaft 343 , a second ball 23 is slidably disposed in the circular hole 22 , and a support spring 24 is fixedly connected between the second ball 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 will also move downward under the action of gravity, resulting in the piston 342 not being fully reset, and the driven shaft 343 is connected to the sun gear of the second planetary gear set 11 again, affecting the cleaning effect of the brush mesh 32 on the annular filter 31.

[0082] So observe Fig.10It can be found that a circular hole 22 is opened on the side of the limit rod 19 away from the driven shaft 343, and a ball 23 is slidably arranged in the circular hole 22. A support spring 24 is fixedly connected between the ball 23 and the circular hole 22, so that the ball 23 in the limit rod 19 is always squeezed against the inner wall of the pressure chamber 17 under the push of the support spring 24, thereby using pressure to provide support for the driven shaft 343 and prevent it from moving downward under the action of gravity, which can effectively ensure the operating stability of the linear unit 34.

[0083] In a further preferred embodiment of the present invention, 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 ring gear of the first planetary gear set 7 are both provided with a belt groove 442, and are connected by belt transmission.

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

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

[0086] In this embodiment, the bottom of the air outlet section 6 is located directly below the casing 8 and gradually tilted downward from the outside to the inside to form an inclined surface 25. When the pressure plate 42 is released to push the air flow, the air contacts the inclined surface 25 and is guided to move toward the annular filter 31 as much as possible, thereby improving the cleaning effect of the annular filter 31.

[0087] And observe Figure 5 It can also be found 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, so the air flow in the air inlet section 5 will be easier, so that when positive pressure is generated in the shell 1, the air will tend to flow to the space with a larger cross-section, so the air can be more inclined to release pressure through the opening of the air inlet section 5, thereby ensuring the cleaning effect of the annular filter 31.

[0088] Embodiment 2:

[0089] According to another aspect of the present invention, a laboratory machine room ventilation and dust removal method is provided, which is used for the above-mentioned laboratory machine room ventilation and dust removal equipment.

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

[0091] S101, turning on the fan 2 to generate negative pressure in the housing 1;

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

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

[0094] S104, the connecting shaft 33 rotates and drives the blowback assembly 4 to store energy through the first planetary gear set 7;

[0095] S105, after the ventilation is completed, the fan 2 is turned off to eliminate the negative pressure in the housing 1;

[0096] S106, the back-blowing assembly 4 is released, so that a positive pressure is generated in the housing 1, and the annular filter screen 31 is back-blown;

[0097] S107, the blown-off dust falls out of the air inlet section 5 due to gravity, and the dust discharge is completed.

[0098] Through the above-mentioned scheme of the present invention, the difficulty of using the laboratory machine room ventilation and dust removal equipment can be effectively reduced, and the laboratory machine room ventilation and dust removal equipment can actively clean the annular filter 31 used for dust removal during operation, so as to effectively prevent the annular filter 31 from being blocked, thereby greatly extending the service life of the laboratory machine room ventilation and dust removal equipment and reducing the maintenance cost of the laboratory machine room ventilation and dust removal equipment.

[0099] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laboratory room ventilation and dust removal equipment, characterized in that: The invention comprises a housing (1), wherein the housing (1) mainly comprises an air inlet section (5) and an air outlet section (6), wherein the air inlet section (5) is arranged vertically, and the air inlet section (5) is horizontally connected to the air outlet section (6) at the front position 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 at 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); A fan (2) installed at the outlet of the air outlet section (6); The dust removal assembly (3) comprises an annular filter (31), a brush mesh (32), a connecting shaft (33) and a linear unit (34); the annular filter (31) is rotatably arranged at the top of the air inlet section (5); a connecting shaft (33) is vertically arranged at the center axis position of the annular filter (31); the tops of the annular filter (31) and the connecting shaft (33) are respectively fixedly connected to the ring gear and the sun gear of the first planetary gear set (7); the connecting shaft (33) is located at the annular filter A spline groove (9) is machined at a position inside the connecting shaft (31), and a brush mesh member (32) in contact with the annular filter (31) is slidably connected thereto; a circular groove (10) is formed at 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 mesh member (32) to move linearly is connected to the circular groove (10) through the second planetary gear set (11); and a first turbine (12) is fixedly connected to the bottom of the connecting shaft (33); A backflush assembly (4) comprises 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 casing (8); the bottom end of the ball screw (41) is connected to the ring gear of the first planetary gear set (7) via a transmission unit (44); the middle part of the pressure plate (42) is rotatably connected to a one-way bearing (14) via a torque protector (13); the inner hole wall of the one-way bearing (14) is connected to the ball groove of the ball screw (41) via a ball 1 (15); and a compression spring (43) is fixedly connected between the top of the pressure plate (42) and the casing (8).

2. A laboratory machine room ventilation and dust removal equipment according to claim 1, characterized in that: An annular groove (16) is formed inwardly 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 (31) contacts the bottom of the annular groove (16).

3. A laboratory room ventilation and dust removal equipment according to claim 2, characterized in that: The brush mesh member (32) comprises 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) via a support rod (323); and the outer peripheral wall of the outer ring (322) is evenly distributed with brush bristles that are in contact with the annular filter mesh (31).

4. A laboratory machine room ventilation and dust removal equipment according to claim 3, characterized in that: The linear unit (34) comprises 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 in the pressure cylinder (341); a spacer (345) is vertically connected to the pressure chamber (17); a piston (342) is slidably provided 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 chamber and an outer chamber. The top and bottom of the spacer (345) are both provided with through grooves (18) for connecting the inner chamber and the outer chamber. The driven shaft (343) is rotatably arranged in the inner chamber. The outer wall of the driven shaft (343) is fixedly connected to the second turbine (344). The driven shaft (343) is located on both sides of the second turbine (344) and is connected to limit rods (19). The limit rods (19) pass through the through grooves (18) and contact the inner wall of the pressure chamber (17).

5. A laboratory machine room ventilation and dust removal equipment according to claim 4, characterized in that: A permanent magnet one (20) is embedded in the outer wall of the piston (342), and a permanent magnet two (21) adsorbed by the permanent magnet one (20) is embedded in the interior of the inner ring (321).

6. A laboratory machine room ventilation and dust removal equipment according to claim 5, characterized in that: The ring gear 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 plugged into the sun gear of the second planetary gear set (11).

7. A laboratory machine room ventilation and dust removal equipment according to claim 6, characterized in that: A circular hole (22) is provided on the side of the limiting rod (19) away from the driven shaft (343), a second ball (23) is slidably arranged in the circular hole (22), and a support spring (24) is fixedly connected between the second ball (23) and the circular hole (22).

8. A laboratory machine room ventilation and dust removal equipment according to claim 7, characterized in that: The transmission unit (44) comprises a pulley (441), the pulley (441) is fixedly connected to the bottom end of the ball screw (41), and 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 a belt groove (442) and are connected by belt transmission.

9. A laboratory machine room ventilation and dust removal equipment according to claim 8, characterized in that: The bottom of the air outlet section (6) is located directly below the casing (8) and gradually slopes downward from the outside to the inside to form an inclined surface (25).

10. A method for ventilation and dust removal in a laboratory machine room, characterized in that: The laboratory room ventilation and dust removal equipment according to claim 9 comprises the following steps: S101, turning on the fan (2) to generate negative pressure in the housing (1); S102, airflow enters through the air inlet section (5) of the housing (1) and simultaneously drives the first turbine (12) to rotate; S103, the first turbine (12) cleans the annular filter (31) with the brush mesh (32) through the connecting shaft (33); S104, the connecting shaft (33) rotates and drives the blowback assembly (4) to store energy through the first planetary gear set (7); S105, after the ventilation is completed, the fan (2) is turned off to eliminate the negative pressure in the housing (1); S106, the backflush assembly (4) is released, so that a positive pressure is generated in the housing (1) to backflush the annular filter screen (31); S107, the blown-off dust falls out of the air inlet section (5) due to gravity, thus completing the dust removal.

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