A laboratory ventilation and purification device

Abstract

The present invention relates to the technical field of ventilation and purification devices, and specifically discloses a laboratory ventilation and purification device, comprising a box body, a filtering mechanism and a material changing mechanism, the filtering mechanism is provided with multiple groups, and the multiple groups of filtering mechanisms are arranged in the box body along the horizontal direction and the vertical direction, each group of filtering mechanisms comprises filter plate one and filter plate two, the filter plate one and the filter plate two are both V-shaped structures, and a material accommodating cavity is provided in the filter plate one and the filter plate two, the material changing mechanism comprises a feeding piece and a material changing assembly, the discharge end of the feeding piece is communicated with the material accommodating cavity in the filter plate one, the material changing assembly comprises a feeding piece and two groups of unloading pieces, the two groups of unloading pieces are respectively arranged in the filter plate one and the filter plate two, and the feeding piece is arranged between the filter plate one and the filter plate two; the present invention is provided with a double-layer independent activated carbon filter layer to ensure the purification effect, and the activated carbon can be replaced during the operation of the device without stopping the device for disassembly, thereby solving the problem of inconvenience in replacing activated carbon and affecting efficiency in the existing device.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation and purification devices, and in particular to a laboratory ventilation and purification device. Background Art

[0002] Laboratory ventilation is an integral component of laboratory design. To prevent laboratory personnel from inhaling or ingesting toxic, pathogenic, or unidentified chemicals, laboratories must be well ventilated. Therefore, a ventilation system is required to exhaust toxic gases from the laboratory during use to ensure the safety of researchers. Currently, when exhausting laboratory air, most processes involve purifying it with activated carbon to remove pollutants, ensuring that the air within the laboratory meets environmental standards while also meeting environmental standards.

[0003] The patent document with announcement number CN221526789U discloses a ventilation and purification device for a clean laboratory, including a frame and a cleaning device. Two activated carbon filter plates are symmetrically installed on one side of the frame. The cleaning device includes a motor, a threaded rod is connected to the output end of the motor, a slider is connected to the threaded rod, and a cleaning wiper is connected to one side of the slider. When in use, the threaded rod is driven to rotate by the motor in the cleaning device, and the rotation of the threaded rod drives the slider to reciprocate, and the slider drives the cleaning wiper to reciprocate and cleans the side of the activated carbon filter plate that filters the air to ensure the air purification effect.

[0004] When using a ventilation purification device to purify the air, if the activated carbon filter plate is an integral design, that is, the activated carbon is tightly combined with the filter plate, then when the activated carbon fails, the entire filter plate needs to be replaced, which is costly and easily generates more waste. Therefore, most of the activated carbon filter plates in the related art are detachable designs, that is, the activated carbon can be removed and replaced separately. However, this design still has some problems. That is, after the activated carbon fails, the device needs to be shut down, and then the relevant personnel will disassemble the device and remove and replace the activated carbon inside. This is inconvenient to operate, reduces work efficiency, and is prone to secondary pollution, affecting the normal operation of the laboratory. Summary of the Invention

[0005] The present invention provides a laboratory ventilation and purification device, which aims to solve the problem that when the activated carbon filter plate in the ventilation and purification device in the related art is designed to be detachable, the device needs to be shut down for later replacement, and the activated carbon in the device needs to be manually disassembled and replaced, which is inconvenient to operate, reduces work efficiency, and is likely to cause secondary pollution, affecting the normal operation of the laboratory.

[0006] A laboratory ventilation and purification device of the present invention comprises a box body, which is provided with an air inlet and an air outlet, a filtering mechanism and a material changing mechanism;

[0007] The filter mechanism is provided in multiple groups, and the multiple groups of filter mechanisms are arranged in the box body in the horizontal direction and the vertical direction. Each group of filter mechanisms includes filter plate 1 and filter plate 2. Filter plate 1 and filter plate 2 are both V-shaped structures, and filter plate 2 is nested and installed inside the opening of filter plate 1. Filter plate 1 and filter plate 2 are both provided with a material cavity for accommodating activated carbon. After the gas enters the box body from the air inlet, it will be filtered in turn by filter plate 2 and filter plate 1, and then discharged from the air outlet;

[0008] The material changing mechanism includes a feeding piece and a material changing assembly. The discharge end of the feeding piece is communicated with the material holding cavity in the filter plate one, and is used to convey new activated carbon into the filter plate one. The material changing assembly includes a feeding piece and two groups of unloading pieces. The two groups of unloading pieces are respectively arranged in the filter plate one and the filter plate two, and are used to discharge the activated carbon in the corresponding material holding cavity to the outside. The feeding piece is arranged between the filter plate one and the filter plate two, and is used to convey the activated carbon discharged from the filter plate one to the filter plate two.

[0009] During use, the gas to be filtered enters the interior of the box from the air inlet, and is then filtered twice through the activated carbon in filter plate two and filter plate one, and finally discharged outward from the air outlet, thereby improving the purification effect; and the use of a double-layer independent activated carbon filter layer can ensure that at least one layer is always in working condition, thereby ensuring the continuity and stability of the filtering effect; when the activated carbon in filter plate two is about to fail, the activated carbon in filter plate one and filter plate two is discharged outward through the unloading piece, and the activated carbon discharged from filter plate one is transported to filter plate one through the feeding piece, so that it continues to perform preliminary filtration on the air in the box, and at the same time, new activated carbon is added to filter plate one through the feeding piece to ensure the secondary filtration effect; the material changing operation is adopted, so that the replacement of activated carbon can be carried out during the operation of the device without stopping the device for disassembly, thereby solving the problem of inconvenient replacement of activated carbon and affecting efficiency in the existing device.

[0010] Preferably, the feeding parts are provided in multiple groups and are respectively arranged corresponding to multiple columns of filtering mechanisms. Each group of feeding parts includes a hopper, a feeding pipe and multiple branch pipes. The hopper is connected to the feeding pipe. The multiple branch pipes are all connected to the feeding pipe and respectively correspond to multiple filter plates located in the same column. There are two material containing cavities in the filter plate one. The two material containing cavities are respectively located in two branches of the filter plate one. A feeding cavity is provided at the tip of the filter plate one, and the feeding cavity is connected to the corresponding branch pipe. An inclined surface one is provided between the feed cavity and the two material containing cavities, and each inclined surface one is inclined from top to bottom toward the direction close to the material containing cavity.

[0011] Preferably, the unloading parts are provided in multiple groups and are correspondingly arranged in multiple material holding chambers. Each group of unloading parts includes a rotating shaft and multiple baffle plates. The lower ends of filter plate one and filter plate two are provided with a discharge chamber communicated with the material holding chamber. The rotating shaft rotates horizontally and is arranged between the material holding chamber and the discharge chamber. Multiple baffle plates are installed on the rotating shaft at intervals along the circumference of the rotating shaft. The baffle plates can block the activated carbon in the material holding chamber and, when the rotating shaft rotates, move the activated carbon in the material holding chamber to the discharge chamber below.

[0012] Preferably, each baffle plate is an elastic telescopic structure.

[0013] Preferably, the feeding member includes a feeding barrel, an auger shaft and an auger blade. The feeding barrel is longitudinally installed at the tip of the filter plate 2. The lower end of the feeding barrel is communicated with the discharge cavity provided at the lower end of the filter plate. The upper end of the feeding barrel is communicated with the two material containing cavities provided in the filter plate 2. The auger shaft is longitudinally rotatably installed in the feeding barrel, and the auger blade is installed on the auger shaft. When the auger shaft rotates, the activated carbon in the feeding barrel can be transported from bottom to top.

[0014] Preferably, there is a second slope in the discharge cavity at the lower end of the filter plate, which is inclined from top to bottom toward the lower end of the feed cylinder. The upper end of the feed cylinder is provided with a discharge port, and the upper end of the filter plate 2 is provided with two feed cavities. The two material storage cavities in the filter plate 2 are respectively connected to the discharge port through the corresponding material storage cavities. Each feed cavity is provided with a third slope, which is inclined from top to bottom toward the direction close to the material storage cavity.

[0015] Preferably, an ultraviolet lamp is installed in the feeding tube.

[0016] The effect is that the activated carbon can be irradiated during transportation, which can restore the adsorption capacity of the activated carbon to a certain extent and increase its service life.

[0017] Preferably, a cloth piece is provided at the upper end of each material holding cavity, and the cloth piece includes a second auger shaft and a second auger blade. The second auger shaft is horizontally rotatable and arranged in the material holding cavity, and the second auger blade is installed on the second auger shaft.

[0018] The effect is that when the auger shaft 2 rotates, the spiral structure of the auger blade 2 can be used to push the activated carbon entering the material chamber to be evenly distributed in the material chamber, thereby reducing the situation of poor local filtration effect caused by uneven distribution of activated carbon.

[0019] Preferably, each rotating shaft and auger shaft are provided with a driving structure, the driving structure including a driving rod, a rack and a gear. The driving rod slides radially along the feed cylinder and penetrates the side wall of the feed cylinder, and an elastic member for driving the driving rod to reset is provided between the driving rod and the filter plate 2. The driving rod is provided with an inclined surface four at one end facing the feed cylinder, and the inclined surface four is inclined from top to bottom in the direction away from the axis of the feed cylinder. When the auger shaft 1 rotates, the outer peripheral side of the auger blade 1 can contact the inclined surface four provided on the driving rod, and the rack is provided at the end of the driving rod away from the feed cylinder. The gear is connected to the end of the rotating shaft or the auger shaft 2, and the rack and the gear are meshed for transmission.

[0020] The effect is that it can utilize the rotation of the existing auger shaft one, and through the design of the inclined plane four, the rotational motion of the auger shaft one can be converted into the reciprocating motion of the drive rod, and through the design of the gear and rack, it can be converted into the rotational motion of the rotating shaft and the auger shaft two, thereby realizing the operation of the unloading parts and the fabric parts, without the need for an additional drive source, simplifying the device structure and reducing costs.

[0021] Preferably, a collection piece is also provided in the box body, and the collection piece includes a collection box and a collection pipe. There are multiple collection boxes, and they are respectively arranged corresponding to multiple rows of filtering mechanisms. The adjacent collection boxes are connected through multiple collection pipes. The collection box located at the bottom layer is provided with a material taking port for taking materials. The discharge cavity provided at the lower end of the second filter plate is connected to the corresponding collection box, and a slope five is provided in the discharge cavity, and the slope five is inclined from top to bottom toward the direction close to the collection box.

[0022] The effect is that the activated carbon discharged from the second filter plate can be automatically collected without stopping the machine or disassembling the equipment, thereby improving work efficiency. In addition, manual operation is reduced during the entire aggregation process, effectively reducing the risk of operators being exposed to harmful substances.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention is provided with a filtering mechanism. The air entering the box will first be filtered by the activated carbon in the second filter plate, and then filtered again by the activated carbon in the first filter plate, which can more effectively remove pollutants in the air and improve the purification effect. The double-layer independent activated carbon filter layer design can ensure that at least one layer is always in working condition. Even if the outer layer of activated carbon fails due to adsorption saturation, the inner layer of activated carbon can continue to play a role, thereby ensuring the continuity and stability of the filtering effect.

[0025] 2. The present invention is provided with a material changing mechanism. When the activated carbon in the filter plate 2 is about to become ineffective, the activated carbon in the filter plates 1 and 2 is discharged through the discharge member, and the activated carbon discharged from the filter plate 1 is transported to the filter plate 2 through the feeding member. At the same time, new activated carbon is added to the filter plate 1 through the feeding member. Therefore, the replacement of the activated carbon can be carried out during the operation of the device without stopping the device for disassembly, which solves the problem of inconvenient replacement of activated carbon and affecting work efficiency in traditional devices. In addition, during the material changing process, it can avoid the pollution of the environment due to leakage of activated carbon or the influence of the filtration effect due to lack of activated carbon, thereby ensuring the purification effect.

[0026] 3. The present invention is provided with a collecting piece, which can automatically collect the activated carbon discharged from the second filter plate without stopping the machine or disassembling the equipment, reducing manual operation, improving work efficiency, and reducing the risk of operators being exposed to harmful substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the assembly structure of multiple groups of filtering mechanisms of the present invention.

[0029] Figure 3 It is a structural schematic diagram of the filtering mechanism of the present invention.

[0030] Figure 4 It is a schematic structural diagram of the filtering mechanism of the present invention cut along the horizontal direction.

[0031] Figure 5 It is a schematic diagram of the assembly structure of the feeding member and the filter plate of the present invention.

[0032] Figure 6 It is a structural schematic diagram of the blanking piece and the fabric piece of the present invention.

[0033] Figure 7 It is a structural schematic diagram of the blanking part of the present invention.

[0034] Figure 8 It is a structural schematic diagram of the material feeding member of the present invention.

[0035] Figure 9 It is a structural schematic diagram of the driving structure of the present invention.

[0036] Figure 10 The present invention Figure 9 Schematic diagram of the enlarged structure at point A in the middle.

[0037] Reference numerals:

[0038] 1. Box body; 11. Air inlet; 12. Air outlet; 2. Filter mechanism; 201. Material holding chamber; 202. Material discharging chamber; 21. Filter plate 1; 211. Material feeding chamber; 22. Filter plate 2; 221. Material delivery chamber; 3. Material feeding member; 31. Material hopper; 32. Material feeding pipe; 33. Material branch pipe; 4. Material discharge member; 41. Rotating shaft; 42. Material baffle; 5. Material delivery member; 51. Material delivery barrel; 511. Material discharge port; 52. Auger shaft 1; 53. Auger blade 1; 6. Material distribution member; 61. Auger shaft 2; 62. Auger blade 2; 7. Driving structure; 71. Driving rod; 72. Rack; 73. Gear; 74. Elastic member; 8. Material collection member; 81. Material collection box; 82. Material collection pipe. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] like Figures 1 to 10 As shown, a laboratory ventilation and purification device of the present invention includes a box body 1, a filtering mechanism 2, a material changing mechanism, a cloth member 6 and a collection member 8.

[0041] The housing 1 is provided with an air inlet 11 and an air outlet 12, and a filter mechanism 2 is provided within the housing 1. After the gas enters the housing 1 through the air inlet 11, it is purified by the filter mechanism 2 to remove pollutants in the air, and then discharged out of the air outlet 12, providing clean air for the laboratory, ensuring that the air quality in the laboratory meets safety and health standards, protecting the health of the laboratory personnel, and ensuring that the gas discharged from the laboratory meets environmental protection standards, reducing pollution to the environment. In the prior art, the filter mechanism 2 mostly uses activated carbon to adsorb certain substances in the air, and the material replacement mechanism is used to replace the activated carbon after it becomes ineffective.

[0042] Among them, a primary filtering device is provided at the air inlet 11 for preliminary filtering of the air entering the box 1. The primary filtering device can adopt a primary filter to intercept large particle pollutants in the air, effectively reducing the burden of the subsequent filtering mechanism 2, extending its service life, and improving purification efficiency.

[0043] like Figures 2 to 5As shown, the filter mechanism 2 is provided in multiple groups, and the multiple groups of filter mechanisms 2 are arranged in the horizontal and vertical directions in the housing 1 to form a grid-like layout. Each group of filter mechanisms 2 includes filter plate 1 21 and filter plate 2 22. Filter plate 1 21 and filter plate 2 22 are both V-shaped structures, and filter plate 2 22 is nested and installed inside the opening of filter plate 1 21, so that the V-shaped structure of filter plate 2 22 is completely located within the V-shaped opening of filter plate 1 21. The two branches of filter plate 1 21 are both provided with a material cavity 201 for accommodating activated carbon, and the two branches of filter plate 2 22 are both provided with a material cavity 201 for accommodating activated carbon. The design of the V-shaped structure can effectively increase the filtration area and improve the filtration efficiency. In addition, a primary filter can be provided at the open end of filter plate 2 22 to intercept pollutants in the air again and improve the filtration effect.

[0044] The working process of the filter mechanism 2 of the present invention is as follows: After entering the interior of the housing 1 through the air inlet 11, the air first flows into the opening of the second filter plate 22, is then filtered by the activated carbon in the second filter plate 22, and then is filtered again by the activated carbon in the first filter plate 21, before being discharged out of the air outlet 12. During use, the activated carbon in the second filter plate 22 first comes into contact with pollutants in the incoming air. At this time, the activated carbon in the second filter plate 22 preferentially absorbs the majority of pollutants, reducing the adsorption burden of the activated carbon in the first filter plate 21. With increasing use, the adsorption capacity of the activated carbon in the second filter plate 22 saturates more quickly, while the activated carbon in the first filter plate 21 is less exposed to pollutants and therefore decreases more slowly. By providing two independent activated carbon filter layers, at least one layer is always in working condition. Even if the outer activated carbon layer fails due to adsorption saturation, the inner activated carbon layer can continue to function, thus ensuring the continuity and stability of the filtration effect. In addition, the design of the double-layer activated carbon filter layer can more effectively remove pollutants from the air, improving the purification effect.

[0045] like Figures 2 to 6 As shown, the material exchange mechanism includes a feeder 3 and a material exchange assembly. The feed end of the feeder 3 is connected to an external feeder, and the discharge end of the feeder 3 communicates with the material holding cavity 201 provided in the first filter plate 21, for delivering new activated carbon into the first filter plate 21. The material exchange assembly includes a feeder 5 and two sets of dischargers 4. The two sets of dischargers 4 are respectively provided in the first filter plate 21 and the second filter plate 22, for discharging the activated carbon in the corresponding material holding cavity 201. The feeder 5 is provided between the first filter plate 21 and the second filter plate 22, for delivering the activated carbon discharged from the first filter plate 21 to the second filter plate 22.

[0046] like Figures 2 to 6As shown, the feed components 3 are provided in multiple groups, corresponding to the multiple columns of filter mechanisms 2. Each group of feed components 3 includes a hopper 31, a feed pipe 32, and multiple branch pipes 33. The hopper 31 is capable of receiving activated carbon provided by an external feeding device. The lower end of the hopper 31 is connected to the feed pipe 32, and the multiple branch pipes 33 are all connected to the feed pipe 32. The multiple branch pipes 33 correspond to the multiple filter plates 21 located in the same column. A feed cavity 211 is provided at the tip of the filter plate 21. The feed cavity 211 is connected to the corresponding branch pipe 33. A feed channel is provided between the feed cavity 211 and the two material holding chambers 201. Each feed channel is provided with an inclined surface 1, which slopes from top to bottom toward the corresponding material holding chamber 201. During use, new activated carbon is transported to the hopper 31 through an external feeding device, then transported to multiple branch pipes 33 through the feeding pipe 32, and enters the corresponding feed chamber 211, and then slides along the inclined surface in the feed channel to the material chamber 201, thereby feeding the filter plate 21.

[0047] like Figure 6 and Figure 7 As shown, the unloading parts 4 are provided in multiple groups and are correspondingly arranged in multiple material holding chambers 201. Each group of unloading parts 4 includes a rotating shaft 41 and multiple baffle plates 42. The lower ends of filter plate 1 21 and filter plate 2 22 are provided with a discharge chamber 202 communicated with the material holding chamber 201. The rotating shaft 41 rotates horizontally and is arranged between the material holding chamber 201 and the discharge chamber 202. Multiple baffle plates 42 are installed on the rotating shaft 41 at intervals along the circumference of the rotating shaft 41. The baffle plates 42 can block the activated carbon in the material holding chamber 201, and when the rotating shaft 41 rotates, the activated carbon in the material holding chamber 201 is moved to the discharge chamber 202 below, and prevent the activated carbon from being discharged all at once, thereby ensuring the orderly replacement of the activated carbon.

[0048] Among them, the number of baffle plates 42 in each group of unloading parts 4 is preferably set to four, and each baffle plate 42 is an elastic telescopic structure, which can not only effectively block and move the activated carbon, but also avoid stagnation and blockage caused by the rigid structure, thereby ensuring the continuity and stability of unloading.

[0049] like Figures 4 to 9As shown, the feed member 5 includes a feed barrel 51, an auger shaft 1 52, and an auger blade 1 53. The feed barrel 51 is longitudinally mounted at the tip of the second filter plate 22. The lower end of the feed barrel 51 communicates with the discharge cavity 202 provided at the lower end of the first filter plate 21, and can receive the activated carbon discharged from the interior of the first filter plate 21. The upper end of the feed barrel 51 communicates with the two material receiving cavities 201 provided in the second filter plate 22, and can transport the activated carbon into the second filter plate 22. The auger shaft 1 52 is longitudinally rotatably mounted within the feed barrel 51, and the auger blade 1 53 is mounted on the auger shaft 1 52. When the auger shaft 1 52 rotates, the auger blade 1 53 can transport the activated carbon in the feed barrel 51 from bottom to top. By transporting the activated carbon through the feeding member 5, the activated carbon discharged from the filter plate 1 21 can be automatically transported to the filter plate 2 22, reducing the need for manual operation, improving the material replacement efficiency, and preventing the activated carbon from leaking or polluting the environment during transportation.

[0050] like Figures 4 to 8 As shown, to ensure the smooth progress of the material replacement process, the discharge cavity 202 at the lower end of the filter plate 1 21 is provided with a second inclined surface. The second inclined surface is inclined from top to bottom toward the lower end of the feed barrel 51, so that the activated carbon can flow smoothly from the discharge cavity 202 at the lower end of the filter plate 1 21 to the lower end of the feed barrel 51, thereby preventing the activated carbon from accumulating in the discharge cavity 202. The upper end of the feed barrel 51 is provided with a discharge port 511, and the upper end of the filter plate 22 is provided with two feed cavities 221. The two material cavities 201 provided in the filter plate 22 are respectively connected to the discharge port 511 through the corresponding feed cavities 221, ensuring that the activated carbon in the feed barrel 51 can respectively enter the two material cavities 201 of the filter plate 22. Each feed cavity 221 is provided with a slope three, which is inclined from top to bottom toward the direction of the material receiving cavity 201, and can guide the activated carbon from the feed cavity 221 to flow smoothly into the corresponding material receiving cavity 201, thereby avoiding the accumulation of activated carbon in the feed cavity 221.

[0051] Among them, an ultraviolet lamp can be installed in the feeding barrel 51 to irradiate the activated carbon during the transportation process, so as to decompose the organic matter adsorbed on the surface of the activated carbon through photocatalysis, thereby restoring the adsorption capacity of the activated carbon to a certain extent and improving its service life. Specifically, the ultraviolet lamp can adopt a ring design and be evenly installed on the inner wall of the feeding barrel 51, which can ensure that the activated carbon is exposed to all-round ultraviolet rays during the transportation process, thereby improving the disinfection effect.

[0052] The working process of the material replacement mechanism of the present invention is as follows: as the use time increases, when it is detected that the activated carbon in the second filter plate 22 is about to expire, the unloading member 4 at the lower end of the first filter plate 21 is activated, and through the rotation of the rotating shaft 41 and the material blocking plate 42, the activated carbon in the first filter plate 21 is moved into the discharge chamber 202 provided at the lower end of the first filter plate 21, preparing for subsequent material replacement. At the same time, the unloading member 4 at the lower end of the second filter plate 22 is activated, and through the rotation of the rotating shaft 41 and the material blocking plate 42, the activated carbon in the second filter plate 22 is moved into the discharge chamber 202 provided at the lower end of the second filter plate 22 for subsequent removal or collection.

[0053] During the process of unloading the activated carbon in the filter plate 21, the feeding part 3 is started, so that the new activated carbon in the hopper 31 is transported along the feeding pipe 32 to the multiple branch pipes 33, and enters the corresponding feed cavity 211 provided on the filter plate 21, and then slides along the inclined surface 1 in the feed channel to the containing cavity 201 provided on the filter plate 21, thereby replenishing the activated carbon in the filter plate 21.

[0054] During the unloading process of the activated carbon in the filter plate 22, the feeding part 5 is started to rotate the auger shaft 52. At this time, the activated carbon discharged from the filter plate 1 21 will slide along the inclined surface 2 in the discharge cavity 202 into the feeding barrel 51, and after entering the inside of the feeding barrel 51, it will be transported upward by the spiral structure of the auger blade 1 53. When this part of the activated carbon is transported to the upper end of the feeding barrel 51, it will be discharged outward through the discharge port 511, and then enter the feeding cavity 221 provided at the upper end of the filter plate 22, and slide along the inclined surface 3 in the feeding cavity 221 to the containing cavity 201 provided on the filter plate 22, thereby replenishing the activated carbon in the filter plate 22.

[0055] Through the above-mentioned material replacement operation, the replacement of activated carbon can be carried out during the operation of the device without stopping the device for disassembly, which solves the problem of inconvenience in replacing activated carbon and affecting work efficiency in traditional devices. In addition, during the replacement process, the activated carbon in filter plate 1 21 and filter plate 2 22 can always be kept full, avoiding the situation where the filtration effect is affected by the lack of activated carbon during the material replacement process. In addition, since the activated carbon in filter plate 1 21 is less exposed to pollutants, its adsorption capacity is relatively strong. After transferring it to filter plate 2 22, it can continue to exert its high adsorption efficiency. After replacing the activated carbon in filter plate 1 21 with a new part, filter plate 1 21 can better process the air filtered by filter plate 2 22 again, thereby improving the purification effect.

[0056] like Figures 4 to 6As shown, in order to solve the problem of uneven distribution of activated carbon in the material holding chamber 201, a distribution member 6 is provided at the upper end of each material holding chamber 201. The distribution member 6 includes a second auger shaft 61 and a second auger blade 62. The second auger shaft 61 is horizontally rotatable and disposed in the material holding chamber 201, and the second auger blade 62 is mounted on the second auger shaft 61. When the second auger shaft 61 rotates, the spiral structure of the second auger blade 62 can push the activated carbon to be evenly distributed within the lateral range of the material holding chamber 201, preventing the activated carbon from accumulating on the side of the material holding chamber 201 near the feed chamber 211 or the delivery chamber 221, thereby achieving uniform distribution of the activated carbon and reducing the situation of poor local filtration effect caused by uneven distribution of the activated carbon.

[0057] like Figure 2 and Figure 8 As shown, to enable the operation of the feed member 5, a drive source for rotating the auger shaft 1 52 is mounted on the filter plate 1 21. To simplify the device, the feed members 5 in the same row of filter mechanisms 2 can use the same auger shaft 1 52. That is, multiple feed members 5 in the same row only require a single drive source to drive. In this case, the feed cylinder 51 in each filter plate 1 21 can still be independent of each other, ensuring the effective material replacement of the filter mechanism 2.

[0058] like Figures 6 to 10 As shown, in order to realize the operation of the blanking member 4 and the material distributing member 6, each rotating shaft 41 and the second auger shaft 61 are provided with a driving structure 7 for driving them to rotate. The driving structure 7 includes a driving rod 71, a rack 72 and a gear 73. The driving rod 71 is arranged in the second filter plate 22 and can slide along the radial direction of the feeding cylinder 51 to pass through the side wall of the feeding cylinder 51. An elastic member 74 is provided between the driving rod 71 and the second filter plate 22 for driving the driving rod 71 to reset. The elastic force direction of the elastic member 74 is the same as the sliding direction of the driving rod 71. The elastic member 74 can be a spring. The end of the drive rod 71 facing the feed barrel 51 is provided with a bevel four, which is inclined from top to bottom in a direction away from the axis of the feed barrel 51. When the auger shaft 1 52 rotates, the outer peripheral side of the auger blade 1 53 can contact the bevel four provided on the drive rod 71 and push the drive rod 71 to move in a direction away from the axis of the feed barrel 51, thereby converting the rotational motion of the auger shaft 1 52 into the reciprocating motion of the drive rod 71. The rack 72 is provided at the end of the drive rod 71 away from the feed barrel 51, and the gear 73 is connected to the end of the rotating shaft 41 or the auger shaft 2 61. The rack 72 and the gear 73 are meshed and driven to convert the reciprocating motion of the drive rod 71 into the rotational motion of the rotating shaft 41 or the auger shaft 2 61, thereby realizing the automated driving of the blanking member 4 and the fabric member 6 without the need for an additional power source, thereby simplifying the device structure and reducing costs.

[0059] like Figure 2 and Figure 8As shown, to process the activated carbon discharged from the second filter plate 22, a collection member 8 is further provided within the housing 1. This collection member 8 includes a collection box 81 and a collection pipe 82. Multiple collection boxes 81 are provided, each corresponding to the multiple rows of filter mechanisms 2. A discharge cavity 202 provided at the lower end of the second filter plate 22 communicates with the corresponding collection box 81 and is used to collect the activated carbon discharged from the second filter plate 22. Adjacent collection boxes 81 are connected by multiple collection pipes 82. The collection box 81 located at the bottom layer is provided with a material removal port to collect the activated carbon from the collection box 81 at the bottom layer for removal. A slope 5 is provided within the discharge cavity 202 provided at the lower end of the second filter plate 22. This slope 5 slopes downward from top to bottom toward the collection box 81, facilitating the smooth entry of the activated carbon into the collection box 81 and reducing clogging. Through the design of the collecting member 8, the activated carbon in the filter plate 22 is automatically collected without stopping or disassembling the equipment, thereby improving efficiency. The entire process reduces manual operation and effectively reduces the risk of operators being exposed to harmful substances.

[0060] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A laboratory ventilation and purification device, comprising a box (1), the box (1) being provided with an air inlet (11) and an air outlet (12), characterized in that: It also includes a filtering mechanism (2) and a material changing mechanism; The filter mechanism (2) is provided in a plurality of groups, and the plurality of groups of filter mechanisms (2) are arranged in the box body (1) along the horizontal direction and the vertical direction, and each group of filter mechanisms (2) includes a filter plate 1 (21) and a filter plate 2 (22), and the filter plate 1 (21) and the filter plate 2 (22) are both V-shaped structures, and the filter plate 2 (22) is nested and installed inside the opening of the filter plate 1 (21), and the filter plate 1 (21) and the filter plate 2 (22) are both provided with a material cavity (201) for accommodating activated carbon, and after the gas enters the box body (1) from the air inlet (11), it will be filtered by the filter plate 2 (22) and the filter plate 1 (21) in turn, and then discharged from the air outlet (12); The material changing mechanism includes a feeding member (3) and a material changing assembly. The discharge end of the feeding member (3) is communicated with the material holding cavity (201) in the filter plate 1 (21) and is used to convey new activated carbon into the filter plate 1 (21). The material changing assembly includes a feeding member (5) and two groups of discharge members (4). The two groups of discharge members (4) are respectively arranged in the filter plate 1 (21) and the filter plate 2 (22) and are used to discharge the activated carbon in the corresponding material holding cavity (201) to the outside. The feeding member (5) is arranged between the filter plate 1 (21) and the filter plate 2 (22) and is used to convey the activated carbon discharged from the filter plate 1 (21) to the filter plate 2 (22).

2. A laboratory ventilation and purification device according to claim 1, characterized in that: The feeding members (3) are provided in a plurality of groups and are respectively arranged corresponding to the plurality of columns of filtering mechanisms (2). Each group of feeding members (3) includes a hopper (31), a feeding pipe (32) and a plurality of branch pipes (33). The hopper (31) is connected to the feeding pipe (32). The plurality of branch pipes (33) are all connected to the feeding pipe (32) and respectively correspond to the plurality of filter plates (21) located in the same column. The number of material containing cavities (201) in the filter plate (21) is provided in two. The two material containing cavities (201) are respectively located in the two branches of the filter plate (21). A feeding cavity (211) is provided at the tip of the filter plate (21). The feeding cavity (211) is connected to the corresponding branch pipe (33). An inclined surface (1) is provided between the feeding cavity (211) and the two material containing cavities (201), and each inclined surface (1) is inclined from top to bottom toward the direction of the material containing cavity (201).

3. A laboratory ventilation and purification device according to claim 1, characterized in that: The material discharge members (4) are provided in a plurality of groups and are correspondingly provided in a plurality of material holding chambers (201). Each group of material discharge members (4) includes a rotating shaft (41) and a plurality of material blocking plates (42). The lower ends of the filter plate 1 (21) and the filter plate 2 (22) are provided with a discharge chamber (202) communicating with the material holding chamber (201). The rotating shaft (41) is horizontally rotated and provided between the material holding chamber (201) and the discharge chamber (202). The plurality of material blocking plates (42) are installed on the rotating shaft (41) at intervals along the circumference of the rotating shaft (41). The material blocking plates (42) can block the activated carbon in the material holding chamber (201) and move the activated carbon in the material holding chamber (201) to the discharge chamber (202) below when the rotating shaft (41) rotates.

4. A laboratory ventilation and purification device according to claim 3, characterized in that: Each material blocking plate (42) is an elastic telescopic structure.

5. A laboratory ventilation and purification device according to claim 3, characterized in that: The feeding member (5) includes a feeding barrel (51), an auger shaft (52) and an auger blade (53). The feeding barrel (51) is longitudinally mounted at the tip of the filter plate (22). The lower end of the feeding barrel (51) is communicated with the discharge cavity (202) provided at the lower end of the filter plate (21). The upper end of the feeding barrel (51) is communicated with the two material containing cavities (201) provided in the filter plate (22). The auger shaft (52) is longitudinally rotatably mounted in the feeding barrel (51). The auger blade (53) is mounted on the auger shaft (52). When the auger shaft (52) rotates, the activated carbon in the feeding barrel (51) can be transported from bottom to top.

6. A laboratory ventilation and purification device according to claim 5, characterized in that: The discharge cavity (202) at the lower end of the filter plate 1 (21) has a second inclined surface, which is inclined from top to bottom toward the lower end of the feed cylinder (51). The upper end of the feed cylinder (51) is provided with a discharge port (511). The upper end of the filter plate 2 (22) is provided with two feed cavities (221). The two material containing cavities (201) provided in the filter plate 2 (22) are respectively communicated with the discharge port (511) through the corresponding feed cavities (221). Each feed cavity (221) is provided with a third inclined surface, which is inclined from top to bottom toward the material containing cavity (201).

7. A laboratory ventilation and purification device according to claim 5, characterized in that: An ultraviolet lamp is installed in the feeding barrel (51).

8. A laboratory ventilation and purification device according to claim 5, characterized in that: A material distributing member (6) is provided at the upper end of each material containing cavity (201), and the material distributing member (6) comprises a second auger shaft (61) and a second auger blade (62). The second auger shaft (61) is horizontally rotatable and arranged in the material containing cavity (201), and the second auger blade (62) is mounted on the second auger shaft (61).

9. A laboratory ventilation and purification device according to claim 8, characterized in that: Each rotating shaft (41) and the second auger shaft (61) are provided with a driving structure (7), the driving structure (7) including a driving rod (71), a rack (72) and a gear (73), the driving rod (71) slides along the radial direction of the feeding barrel (51) and penetrates the side wall of the feeding barrel (51), and an elastic member (74) for driving the driving rod (71) to reset is provided between the driving rod (71) and the second filter plate (22), and the driving rod (71) is directed toward the feeding barrel (51). One end of the auger shaft (52) is provided with a bevel four, which is inclined from top to bottom in a direction away from the axis of the feed barrel (51). When the auger shaft (52) rotates, the outer peripheral side of the auger blade (53) can contact the bevel four provided on the drive rod (71). The rack (72) is provided at the end of the drive rod (71) away from the feed barrel (51). The gear (73) is connected to the end of the rotating shaft (41) or the auger shaft (61), and the rack (72) and the gear (73) are meshed for transmission.

10. A laboratory ventilation and purification device according to claim 3, characterized in that: A material collecting member (8) is further provided in the box body (1), and the material collecting member (8) includes a material collecting box (81) and a material collecting pipe (82). The material collecting boxes (81) are provided in plurality and are respectively provided corresponding to the multi-row filter mechanism (2). Two adjacent material collecting boxes (81) are connected through a plurality of material collecting pipes (82). The material collecting box (81) located at the bottom layer is provided with a material taking port for taking materials. The material discharging cavity (202) provided at the lower end of the filter plate 2 (22) is communicated with the corresponding material collecting box (81), and a slope five is provided in the material discharging cavity (202), and the slope five is inclined from top to bottom toward the direction close to the material collecting box (81).

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