Gas purification device for experiment table

Abstract

The invention discloses a gas purification device for an experiment table, which comprises a shell, a plurality of air inlet holes are formed in the side wall of the shell along the circumferential direction, a coarse filter cartridge is arranged in the shell, an activated carbon filter cartridge is arranged in the coarse filter cartridge, a guide cylinder is arranged in the activated carbon filter cartridge, an exhaust passage communicated with an exhaust hole is formed in the guide cylinder, and a plurality of air inlet holes are formed in the side wall of the shell along the circumferential direction. An exhaust channel is formed in the shell, an air inlet is formed in the bottom of the exhaust channel, a flow guide column is fixedly arranged in the exhaust channel, a spiral flow guide piece is arranged on the outer wall of the flow guide column in the axis direction, and a plurality of ultraviolet germicidal lamps are arranged on the side wall of the flow guide column at intervals. Large-particle impurities are preliminarily filtered by the coarse filter cylinder, harmful gas is adsorbed by the activated carbon filter cylinder, and the gas is further purified by the spiral flow deflector and the ultraviolet germicidal lamp in the flow guide cylinder, so that the discharged gas is ensured to reach the environment-friendly standard.

Description

Technical Field

[0001] The invention relates to the technical field of gas purification, in particular to a gas purification device for a laboratory bench. Background Art

[0002] On the laboratory bench, gas purification devices are important equipment to ensure experimental safety and environmental cleanliness. These devices are mainly used to remove harmful gases, dust and other pollutants generated during the experiment to protect the health of the experimenters and the normal operation of the experimental equipment. However, the existing gas purification devices have some shortcomings in practical applications:

[0003] Traditional gas purification devices usually use a single filtering method, such as activated carbon adsorption or HEPA filtration. These methods have limited effects when dealing with complex gas components and it is difficult to achieve the desired purification effect. After a period of use, the filter material of the existing purification device is easily clogged and needs to be replaced or cleaned regularly. However, the traditional device design makes the maintenance process complicated and requires the disassembly of multiple parts, which increases the difficulty of operation and maintenance costs.

[0004] In order to solve the above problems, the present invention proposes a gas purification device for a laboratory bench. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a gas purification device for a laboratory bench, which solves the problems of poor filtering effect and inconvenient cleaning of the prior art devices.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a gas purification device for a laboratory bench, comprising a shell, a side wall of the shell is provided with a plurality of air inlet holes along a circumferential direction, and an exhaust hole is provided on the top, an exhaust fan connected to the exhaust hole is provided on the top of the shell, a coarse filter cartridge is provided in the shell, an activated carbon filter cartridge is provided in the coarse filter cartridge, a guide cartridge is provided inside the activated carbon filter cartridge, an exhaust channel connected to the exhaust hole is formed in the guide cartridge, and an air inlet is provided at the bottom, a guide column is fixed in the exhaust channel, a spiral guide vane is provided on the outer wall of the guide column along the axial direction, a plurality of ultraviolet sterilization lamps are provided on the side wall of the guide column at intervals, a cleaning component is provided in the shell, and an ash collection component is provided at the bottom of the shell.

[0007] Preferably, the cleaning assembly includes a swivel mounted rotatably on the inner upper wall of the shell, a pair of swivel rods rotatably mounted on the lower wall of the swivel, a pair of cleaning brushes are respectively fitted with the outer wall of the coarse filter cartridge and the air inlet hole, a transmission gear is provided at the upper end of the swivel rod, an inner gear ring meshing with the transmission gear is fixedly provided on the inner wall of the shell, and a driving structure connected to the swivel is provided on the shell.

[0008] Preferably, the driving structure includes a transmission box arranged on the outer wall of the shell, a main shaft is rotatably installed in the transmission box, a driving gear is provided on the main shaft, an outer gear ring meshing with the driving gear is provided on the outer wall of the rotating ring, a motor connected to the main shaft is provided on the upper wall of the transmission box, the side wall of the shell is connected to the transmission box through an opening, and the driving gear is meshed with the outer gear ring in the opening.

[0009] Preferably, the ash collecting assembly includes an ash collecting box arranged at the bottom of the shell, the bottom of the shell is provided with a plurality of ash dropping openings connected to the ash collecting box, the lower end of the shell is provided with a connecting cover, and the ash collecting box and the connecting cover are connected by a snap-fit ​​structure.

[0010] Preferably, the snap-fit ​​structure includes sliding grooves arranged on both sides of the ash box, a wedge block is slidably provided in the sliding groove, the wedge block can slide horizontally along the sliding groove, the side wall of the wedge block is connected to the sliding groove by a first spring, a pair of positioning grooves for inserting the wedge block are provided on both sides of the connecting cover, and an unlocking mechanism is provided on the outside of the shell.

[0011] Preferably, the unlocking mechanism includes a bracket arranged on the outside of the positioning groove, the bracket is fixedly connected to the connecting cover, a pressure rod is slidably inserted on the bracket, one end of the pressure rod extends into the positioning groove, and a pressure plate is fixedly installed on the other end, and the pressure plate and the bracket are connected by a second spring.

[0012] Preferably, the outer wall of the guide tube is an inverted frustum-shaped structure.

[0013] Preferably, an annular track is provided on the upper wall of the rotating ring, and an annular groove matching the annular track is provided on the inner upper wall of the shell.

[0014] Beneficial Effects

[0015] The present invention provides a gas purification device for a laboratory bench, which has the following beneficial effects:

[0016] The multi-level design of the coarse filter cartridge, activated carbon filter cartridge and guide cartridge in the shell achieves efficient gas purification. The coarse filter cartridge initially filters large particles of impurities, the activated carbon filter cartridge absorbs harmful gases, and the spiral guide vane and ultraviolet sterilization lamp in the guide cartridge further purify the gas to ensure that the discharged gas meets environmental protection standards.

[0017] The design of the cleaning component uses a rotating ring, a rotating rod, a cleaning brush, a transmission gear, and an inner gear ring to automatically clean the outer wall of the coarse filter cartridge and the air inlet. This design not only improves the self-cleaning ability of the equipment, but also extends the service life of the equipment and reduces the frequency of manual maintenance.

[0018] The design of the drive structure enables the swivel to rotate smoothly through the coordinated use of the transmission box, main shaft, drive gear, outer gear ring and motor. This design not only improves the stability of the drive system, but also simplifies the operation process and improves the operating efficiency of the equipment;

[0019] The design of the dust collection component uses the dust collection box, dust outlet, connection cover and buckle structure to make the collected dust easy to discharge. The buckle structure design makes the dust collection box easy to disassemble and install, simplifies the cleaning process and improves the user's convenience of operation.

[0020] The design of the unlocking mechanism uses the bracket, the pressure rod, the pressure plate, and the second spring in coordination, so that the user can manually operate the pressure plate to unlock the dust box, simplifying the cleaning process and improving the user experience;

[0021] In summary, the gas purification device for a laboratory bench provided by the present invention has the advantages of efficient purification and multiple filtration, automatic cleaning, and convenient ash collection. It is suitable for the purification treatment of laboratory gases, can effectively improve the gas purification efficiency, reduce environmental pollution, and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of a top view and a cross-sectional structure of the present invention.

[0024] Figure 3 It is a schematic diagram of a partially enlarged structure of the present invention.

[0025] In the figure: 1. shell; 2. air inlet; 3. exhaust hole; 4. exhaust fan; 5. coarse filter cartridge; 6. activated carbon filter cartridge; 7. guide tube; 8. air inlet; 9. guide column; 10. spiral guide vane; 11. ultraviolet germicidal lamp; 12. swivel; 13. rotating rod; 14. cleaning brush; 15. transmission gear; 16. inner ring gear; 17. transmission box; 18. main shaft; 19. driving gear; 20. outer ring gear; 21. motor; 22. ash box; 23. ash drop port; 24. connecting cover; 25. slide groove; 26. wedge block; 27. first spring; 28. positioning groove; 29. ​​bracket; 30. pressure rod; 31. pressure plate; 32. second spring; 33. ring rail. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-2 The present invention provides a technical solution: a gas purification device for a laboratory bench, comprising a shell 1, a plurality of air inlet holes 2 are arranged on the side wall of the shell 1 along the circumferential direction, and an exhaust hole 3 is arranged on the top, an exhaust fan 4 connected to the exhaust hole 3 is arranged on the top of the shell 1, a coarse filter cartridge 5 is arranged in the shell 1, an activated carbon filter cartridge 6 is arranged in the coarse filter cartridge 5, a guide cylinder 7 is arranged inside the activated carbon filter cartridge 6, an exhaust channel connected to the exhaust hole 3 is formed in the guide cylinder 7, and an air inlet 8 is arranged at the bottom, a guide column 9 is fixed in the exhaust channel, a spiral guide plate 10 is arranged on the outer wall of the guide column 9 along the axial direction, a plurality of ultraviolet sterilization lamps 11 are arranged on the side wall of the guide column 9 at intervals, a cleaning component is arranged in the shell 1, and a dust collecting component is arranged at the bottom of the shell 1.

[0028] By adopting the above technical scheme, a coarse filter cartridge 5 is provided in the shell 1, and an activated carbon filter cartridge 6 is provided in the coarse filter cartridge 5, which is used for preliminary filtering and adsorption of particulate matter and harmful substances in the gas. The setting of the activated carbon filter cartridge 6 can further finely filter the gas after the coarse filtration and adsorb harmful substances in the gas. The gas after the secondary filtration enters the exhaust channel from the air inlet 8 at the bottom under the action of the guide cylinder 7. Under the action of the spiral guide plate 10, the gas moves upward in a spiral shape, thereby greatly increasing the flow time of the gas in the exhaust channel. In conjunction with the multiple ultraviolet sterilization lamps 11 arranged at intervals on the side walls of the guide column 9, the sterilization effect is effectively improved to ensure thorough purification of the gas. The design of the cleaning component can automatically clean the coarse filter cartridge 5 and the air inlet 2, reducing manual maintenance. The design of the ash collection component allows dust and particulate matter to be collected in a centralized manner for easy cleaning.

[0029] The present embodiment is further configured such that the cleaning assembly includes a swivel 12 rotatably mounted on the inner upper wall of the shell 1, a pair of rotatable rods 13 are rotatably mounted on the lower wall of the swivel 12, a pair of cleaning brushes 14 are provided on the side walls of the swivel rods 13, the pair of cleaning brushes 14 are respectively fitted with the outer wall surface of the coarse filter cartridge 5 and the air inlet 2, a transmission gear 15 is provided at the upper end of the swivel rod 13, an inner gear ring 16 meshing with the transmission gear 15 is fixedly provided on the inner wall of the shell 1, and a driving structure connected to the swivel 12 is provided on the shell 1.

[0030] By adopting the above technical solution, through the rotation of the swivel 12 and the rotating rod 13, the cleaning brush 14 can automatically clean the coarse filter cartridge 5 and the air inlet 2, reduce blockage, and extend the service life of the equipment. Through the cooperation of the transmission gear 15 and the inner ring 16, the rotating rod 13 will rotate with the swivel 12, and will also rotate on its own, further improving the cleaning effect.

[0031] This embodiment is further configured as follows: the driving structure includes a transmission box 17 arranged on the outer wall of the shell 1, a main shaft 18 is rotatably installed in the transmission box 17, a driving gear 19 is provided on the main shaft 18, the outer wall of the rotating ring 12 is provided with an outer gear ring 20 meshing with the driving gear 19, the upper wall of the transmission box 17 is provided with a motor 21 connected to the main shaft 18, the side wall of the shell 1 is connected to the transmission box 17 through an opening, and the driving gear 19 is meshed with the outer gear ring 20 in the opening.

[0032] By adopting the above technical solution, the motor 21 realizes the automatic rotation of the rotating ring 12 through the transmission of the driving gear 19 and the outer gear ring 20, thereby improving the automation level of the equipment.

[0033] The present embodiment is further configured such that the ash collecting assembly includes an ash box 22 arranged at the bottom of the shell 1, a plurality of ash outlets 23 connected to the ash box 22 are provided at the bottom of the shell 1, a connecting cover 24 is provided at the lower end of the shell 1, and the ash box 22 and the connecting cover 24 are connected by a snap-fit ​​structure.

[0034] By adopting the above technical solution, the design of the dust collecting box 22 allows dust and particles to be collected in a centralized manner for easy cleaning, and the design of the buckle structure allows the dust collecting box 22 to be quickly disassembled and assembled for easy maintenance.

[0035] The present embodiment is further configured such that the snap-fit ​​structure includes a slide groove 25 provided on both sides of the ash box 22, a wedge block 26 is slidably provided in the slide groove 25, the wedge block 26 can slide horizontally along the slide groove 25, the side wall of the wedge block 26 is connected to the slide groove 25 by a first spring 27, a pair of positioning grooves 28 for inserting the wedge block 26 are provided on both sides of the connecting cover 24, and an unlocking mechanism is provided on the outer side of the shell 1.

[0036] By adopting the above technical solution, the wedge block 26 has an inclined structure on the top and a flat structure on the bottom. Therefore, when the ash box 22 is installed, the ash box 22 can be pushed upward. At this time, under the action of the inclined structure, the wedge block 26 will automatically shrink into the slide groove 25, so that the ash box 22 can be smoothly extended into the connecting cover 24. When the slide groove 25 is aligned with the positioning groove 28, the first spring 27 will push the wedge block 26 to reset. At this time, due to the flat structure below, the ash box 22 can be stably placed in the connecting cover 24 and will not fall off automatically, which effectively improves the convenience of installation.

[0037] This embodiment is further configured such that the unlocking mechanism includes a bracket 29 arranged on the outside of the positioning groove 28, the bracket 29 is fixedly connected to the connecting cover 24, a pressure rod 30 is slidably inserted on the bracket 29, one end of the pressure rod 30 extends into the positioning groove 28, and the other end is fixedly installed with a pressure plate 31, and the pressure plate 31 is connected to the bracket 29 via a second spring 32.

[0038] By adopting the above technical solution, through the cooperation of the pressing plate 31 and the pressing rod 30, the wedge block 26 can be quickly pushed to retract into the sliding groove 25, so as to facilitate the removal of the dust collecting box 22.

[0039] This embodiment is further configured such that the outer wall of the guide tube 7 is an inverted frustum-shaped structure.

[0040] By adopting the above technical solution, the inverted frustum-cone structure can reduce the resistance of gas flow, so that the gas can flow smoothly toward the air inlet 8 below, thereby improving the smoothness of the air flow.

[0041] This embodiment is further configured such that an annular track 33 is provided on the upper wall of the rotating ring 12 , and an annular groove matching the annular track 33 is provided on the inner upper wall of the housing 1 .

[0042] By adopting the above technical solution, the cooperation between the annular rail 33 and the annular groove ensures the stable rotation of the rotating ring 12 and prevents the rotating ring 12 from deviating during the rotation process.

[0043] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.

[0044] Embodiment: When in use, the exhaust fan 4 is started, and the gas enters the purification device through the air inlet 2 on the side wall of the shell 1, first passes through the coarse filter cartridge 5 to initially filter out large particles, and then enters the activated carbon filter cartridge 6, where harmful substances are adsorbed by the activated carbon. Then the gas enters the exhaust channel inside the guide cylinder 7 from the air inlet 8 at the bottom, and the gas moves upward along the guide column 9 and the spiral guide plate 10 to increase the contact time between the gas and the activated carbon, while increasing the disinfecting time of the ultraviolet germicidal lamp 11 to kill bacteria and viruses, effectively improving the purification effect, and the purified gas passes through the exhaust channel and the exhaust hole 3 and is discharged by the exhaust fan 4;

[0045] In order to ensure the purification effect, the device needs to be cleaned regularly. The main shaft 18 is driven by the motor 21. The driving gear 19 on the main shaft 18 meshes with the outer gear ring 20 on the outer wall of the rotating ring 12, driving the rotating ring 12 to rotate. Through the cooperation of the transmission gear 15 and the inner gear ring 16, the rotating rod 13 rotates with the rotating ring 12 and also rotates on its own. The cleaning brush 14 on the rotating rod 13 fits with the outer wall of the coarse filter cartridge 5 and the air inlet 2 to clean up the attached dust and particulate matter. The dust collecting box 22 collects the filtered dust and particulate matter through the dust dropping port 23. When the dust collecting box needs to be disassembled When cleaning the impurities inside 22, press the pressure plate 31, the pressure rod 30 pushes the wedge block 26 to exit the positioning groove 28 and retract into the slide groove 25, pull the ash box 22 downward, remove it from the bottom of the shell 1, pour out the dust and particles in the ash box 22, clean it and reinstall it. When installing, just push the ash box 22 upward, the wedge block 26 can automatically retract into the slide groove 25, and when the slide groove 25 is aligned with the positioning groove 28, the first spring 27 pushes the wedge block 26 to pop out, so that it extends into the positioning groove 28, and the ash box 22 is locked.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0047] 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 gas purification device for a laboratory bench, comprising a shell (1), a side wall of the shell (1) being provided with a plurality of air inlet holes (2) along a circumferential direction, and a top being provided with an exhaust hole (3), and a top of the shell (1) being provided with an exhaust fan (4) connected to the exhaust hole (3), characterized in that: The shell (1) is provided with a coarse filter cartridge (5), the coarse filter cartridge (5) is provided with an activated carbon filter cartridge (6), the activated carbon filter cartridge (6) is provided with a guide cartridge (7), an exhaust passage connected to the exhaust hole (3) is formed in the guide cartridge (7), and an air inlet (8) is provided at the bottom, a guide column (9) is fixedly provided in the exhaust passage, a spiral guide plate (10) is provided on the outer wall of the guide column (9) along the axial direction, and a plurality of ultraviolet sterilization lamps (11) are provided at intervals on the side wall of the guide column (9), a cleaning component is provided in the shell (1), and an ash collection component is provided at the bottom of the shell (1).

2. A gas purification device for a laboratory bench according to claim 1, characterized in that: The cleaning assembly comprises a rotating ring (12) rotatably mounted on the inner upper wall of the housing (1); a pair of rotating rods (13) rotatably mounted on the lower wall of the rotating ring (12); a pair of cleaning brushes (14) are provided on the side walls of the rotating rods (13); the pair of cleaning brushes (14) are respectively in contact with the outer wall surface of the coarse filter cartridge (5) and the air inlet hole (2); a transmission gear (15) is provided at the upper end of the rotating rod (13); an inner gear ring (16) meshing with the transmission gear (15) is fixedly provided on the inner wall of the housing (1); and a driving structure connected to the rotating ring (12) is provided on the housing (1).

3. A gas purification device for a laboratory bench according to claim 2, characterized in that: The driving structure comprises a transmission box (17) arranged on the outer wall of the housing (1), a main shaft (18) is rotatably mounted in the transmission box (17), a driving gear (19) is arranged on the main shaft (18), an outer gear ring (20) meshing with the driving gear (19) is arranged on the outer wall of the rotating ring (12), a motor (21) connected to the main shaft (18) is arranged on the upper wall of the transmission box (17), the side wall of the housing (1) and the transmission box (17) are connected through an opening, and the driving gear (19) and the outer gear ring (20) are meshed in the opening.

4. A gas purification device for a laboratory bench according to claim 1, characterized in that: The ash collection assembly comprises an ash collection box (22) arranged at the bottom of the shell (1); the bottom of the shell (1) is provided with a plurality of ash drop openings (23) connected to the ash collection box (22); a connecting cover (24) is provided at the lower end of the shell (1); the ash collection box (22) and the connecting cover (24) are connected via a snap-fit ​​structure.

5. A gas purification device for a laboratory bench according to claim 4, characterized in that: The buckle structure comprises a slide groove (25) arranged on both sides of the ash collecting box (22), a wedge block (26) is slidably arranged in the slide groove (25), and the wedge block (26) can slide horizontally along the slide groove (25), and the side wall of the wedge block (26) is connected to the slide groove (25) through a first spring (27), a pair of positioning grooves (28) for inserting the wedge block (26) are arranged on both sides of the connection cover (24), and an unlocking mechanism is arranged on the outer side of the shell (1).

6. A gas purification device for a laboratory bench according to claim 5, characterized in that: The unlocking mechanism comprises a bracket (29) arranged outside the positioning groove (28), the bracket (29) is fixedly connected to the connecting cover (24), a pressure rod (30) is slidably inserted on the bracket (29), one end of the pressure rod (30) extends into the positioning groove (28), and the other end is fixedly installed with a pressure plate (31), and the pressure plate (31) and the bracket (29) are connected via a second spring (32).

7. A gas purification device for a laboratory bench according to claim 1, characterized in that: The outer wall of the guide tube (7) is an inverted frustum-shaped structure.

8. A gas purification device for a laboratory bench according to claim 3, characterized in that: The upper wall of the rotating ring (12) is provided with an annular track (33), and the inner upper wall of the housing (1) is provided with an annular groove matching the annular track (33).

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