Air purification device for dissection room

Abstract

The present invention relates to the technical field of air conditioning equipment, and in particular to an air purification device for an autopsy room. The technical problem is that when the current purification device purifies the air in the autopsy room, it is difficult to brush off and clean the impurities attached to the biological filter plate, which makes it difficult for the biological filter plate to fully decompose and filter the impurities in the air, and it is not convenient to disperse the bubbles in multiple directions, which leads to insufficient dispersion of the bubbles, resulting in poor purification effect of the air in the autopsy room. An air purification device for an autopsy room includes an outer frame, a support plate fixedly connected to the inner wall of the outer frame, and an air suction frame fixedly connected to the bottom of the inner wall of the outer frame. When filtering the air for the second time, the motor drives the transmission assembly to rotate the bent rod, and the rotation of the bent rod causes the two biological filter plates to reciprocate through the slotted frame, so that the two biological filter plates are continuously switched in the air suction frame, so that the air can be fully filtered for the second time.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning equipment, and in particular to an air purification device for an autopsy room. Background Art

[0002] Chemical solvents such as formalin are usually used to preserve specimens. The chemical solvents on these specimens may evaporate and diffuse in the air. These volatile substances may also be mixed with some harmful substances. In order to ensure the health of the staff, the staff usually use purification devices to purify the air in the dissection room. The existing purification devices will first filter the air through the filter for the first time, then filter it for the second time through two biological filter plates that are constantly switched, and then filter it for the third time through the filtrate. When filtering the filtrate, a stirring plate will be used to stir the filtrate and bubbles, and the bubbles will be broken up horizontally, so that the filtrate is fully in contact with the bubbles for filtration, and finally the air after the three filtrations will be discharged to complete the purification.

[0003] Since there may be impurities in the air that are difficult for the biological filter plate to decompose, these impurities are easily attached to the biological filter plate. When the current purification device purifies the air in the dissection room, it is difficult to brush off the impurities attached to the biological filter plate, which makes it difficult for the biological filter plate to fully decompose and filter the impurities in the air. In addition, the dispersion of bubbles in a single direction may cause the bubbles to be difficult to be dispersed due to inertia. The existing purification device is not convenient for vertically dispersing the bubbles while dispersing them horizontally, which results in incomplete dispersion of the bubbles, resulting in poor purification effect of the air in the dissection room. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides an air purification device for an autopsy room, which can brush off residual impurities so that the biological filter plate can fully decompose and filter the impurities in the air, and can disperse the bubbles formed by the air in the filtrate in multiple directions, making the bubbles more dispersed, thereby enhancing the purification effect of the air in the autopsy room.

[0005] The technical solution is as follows: An air purification device for an autopsy room includes an outer frame, an exhaust port, a cleaning port and an air intake port are provided on the outer frame, the exhaust port and the air intake port of the outer frame are provided with filter screens, a support plate and an air intake frame are fixedly connected to the outer frame, a filter cartridge is fixedly connected to the air intake frame, two one-way valves are installed on the filter cartridge, an air pump is installed on the support plate, the air inlet of the air pump is connected to the filter cartridge, an exhaust frame is fixedly connected to the outer frame, the air outlet of the air pump is connected to the exhaust frame, a stirring mechanism is provided on the filter cartridge, and a switching mechanism is provided on the support plate.

[0006] Furthermore, the stirring mechanism includes a motor, which is mounted on a support plate. The output shaft of the motor is rotatably connected to the support plate. A bidirectional threaded shaft is rotatably connected to the filter cartridge. A transmission gear is fixedly connected to the bidirectional threaded shaft and the motor output shaft. The two transmission gears are meshed. A rotating shaft is fixedly connected to the bidirectional threaded shaft. The rotating shaft is rotatably connected to the filter cartridge, and three stirring plates are fixedly connected to the rotating shaft.

[0007] Furthermore, a plurality of rotating strip holes are formed on the stirring plate.

[0008] Furthermore, the switching mechanism includes a transmission shaft, which is rotatably connected to the support plate, a transmission assembly is provided between the transmission shaft and the output shaft of the motor, a curved rod is fixedly connected to the transmission shaft, a biological filter plate is slidably connected to the air suction frame, another biological filter plate is installed on one side of the biological filter plate, a slotted frame is installed on one of the biological filter plates, and the curved rod is slidably connected to the slotted frame.

[0009] Furthermore, the transmission assembly consists of a small pulley, a large pulley and a flat belt. The small pulley of the transmission assembly is installed on the output shaft of the motor, the large pulley of the transmission assembly is installed on the transmission shaft, and the flat belt of the transmission assembly is wound between the large pulley and the small pulley of the transmission assembly.

[0010] Furthermore, it also includes a brushing mechanism, which is arranged on the suction frame and is used to brush off impurities attached to the biological filter plate. The brushing mechanism includes a limiting rod, four limiting rods are fixedly connected to the suction frame, and sliding blocks are slidably connected to the four limiting rods. The four sliding blocks are in contact with both sides of the upper part of the suction frame, and compression springs are connected between the four sliding blocks and the four limiting rods respectively. Wedge blocks are slidably connected to the four sliding blocks, and two reset springs are connected between the four wedge blocks and the four sliding blocks respectively. Brush strips are installed on the four sliding blocks, and extrusion rods are installed on the two biological filter plates. A downward pressing slope is provided on the sides of the two extrusion rods away from each other.

[0011] Furthermore, it also includes an extrusion bar, and the two extrusion rods are fixedly connected with an extrusion bar, and the extrusion bar is provided with a lifting inclined surface.

[0012] Furthermore, it also includes a breaking up mechanism, which is arranged on the filter cartridge and is used for secondary breaking up of bubbles generated in the filtered liquid. The breaking up mechanism includes a limiting sleeve, which is fixedly connected to the filter cartridge, and vertical grooves are provided on both sides of the limiting sleeve. A threaded block is threadedly connected to the bidirectional threaded shaft, and sliding rods are fixedly connected to both sides of the threaded block. The two sliding rods are respectively slidably connected to the two vertical grooves of the limiting sleeve, and an annular slide rail is fixedly connected between the bottoms of the two sliding rods. Three breaking up plates are slidably connected to the annular slide rail, and the three breaking up plates are respectively slidably connected to the three stirring plates.

[0013] Furthermore, a plurality of vertical strip holes are formed on the scattered plate.

[0014] Beneficial effects: 1. When filtering the air for the second time, the output shaft of the motor rotates to drive the transmission shaft and the crankshaft to rotate through the transmission assembly. The rotation of the crankshaft will first pull the slot frame and the two biological filter plates to one side, and then the crankshaft continues to rotate to squeeze the slot frame and the two biological filter plates to reset together, and repeat this process. The rotation of the crankshaft will pull and squeeze the slot frame to make the two biological filter plates move back and forth horizontally. The reciprocating horizontal movement of the two biological filter plates will continuously switch in the air suction frame, thereby fully filtering the air for the second time.

[0015] 2. While the two biological filter plates are constantly switching, the movement of the biological filter plates drives the squeezing rod to move. The downward pressing slope of the squeezing rod squeezes the wedge block to make the brush bar move downward. The squeezing rod continues to move and no longer squeezes the wedge block. The brush bar resets and contacts the biological filter plate. The brush bar will brush off the smaller impurities attached to the biological filter plate that cannot be decomposed. In this way, the biological filter plate can more fully adsorb and decompose the smaller impurities in the air after the first filtration, thereby enhancing the purification effect of the air in the dissection room.

[0016] 3. When filtering the air for the third time, the rotation of the stirring plate will drive the breaking plate to rotate. The rotation of the two-way threaded shaft will first drive the threaded block and the sliding rod to move downward along the vertical groove of the limit sleeve. Then the two-way threaded shaft continues to rotate to drive the threaded block and the sliding rod to reset upward. Repeat this process. The rotation of the two-way threaded shaft will drive the threaded block and the sliding rod to move back and forth, and then drive the annular slide rail and the rotating breaking plate to move back and forth up and down. The vertical bars of the breaking plate will continuously break up the bubbles vertically, making the breaking of the bubbles more comprehensive, and making it easier for the filtered liquid to contact with the bubbles, thereby further enhancing the purification effect of the air in the dissection room. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the outer frame of the present invention.

[0019] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0020] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0021] Figure 5 It is a partial cross-sectional three-dimensional structural schematic diagram of the air suction frame, filter cartridge and exhaust frame of the present invention.

[0022] Figure 6 It is a schematic cross-sectional three-dimensional structure diagram of the stirring mechanism and the breaking mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the stirring mechanism of the present invention.

[0024] Figure 8 It is a partial cross-sectional three-dimensional structural schematic diagram of the switching mechanism of the present invention.

[0025] Fig. 9 It is a partial cross-sectional three-dimensional structural schematic diagram of the switching mechanism and the brushing mechanism of the present invention.

[0026] Fig.10 It is a three-dimensional structural schematic diagram of the brushing mechanism, biological filter plate and extrusion strip of the present invention.

[0027] Fig.11 It is a schematic diagram of the three-dimensional structure of the brushing mechanism and the extrusion strip of the present invention.

[0028] Fig.12 It is a partially cutaway three-dimensional structural schematic diagram of the brushing mechanism of the present invention.

[0029] Fig.13 It is a schematic diagram of a partially disassembled three-dimensional structure of the brushing mechanism of the present invention.

[0030] Fig.14 It is a schematic diagram of the split three-dimensional structure of the wedge block, the extrusion rod and the extrusion strip of the present invention.

[0031] Fig.15 It is a partially cutaway three-dimensional structural schematic diagram of the stirring mechanism and the breaking mechanism of the present invention.

[0032] Fig.16 It is a schematic diagram of the split three-dimensional structure of the annular slide rail and the breaking plate of the present invention.

[0033] Marked in the figure: 1-outer frame, 1001-cleaning port, 2-support plate, 3-suction frame, 4-filter cartridge, 41-check valve, 5-air pump, 6-exhaust frame, 71-motor, 72-bidirectional threaded shaft, 73-transmission gear, 74-rotating shaft, 75-stirring plate, 81-transmission shaft, 82-transmission assembly, 83-bend rod, 84-biological filter plate, 85-slot frame, 91-limit rod, 92-sliding block, 93-compression spring, 94-wedge block, 95-reset spring, 96-brush strip, 97-extrusion rod, 101-limit sleeve, 102-threaded block, 103-sliding rod, 104-annular slide rail, 105-breaking plate, 11-extrusion strip. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0035] Embodiment 1: An air purification device for an autopsy room, such as Figure 1-Figure 15 As shown, it includes an outer frame 1, an exhaust port is opened on the top of the outer frame 1, a cleaning port 1001 is opened on one side of the bottom of the outer frame 1, and an air suction port is opened on the other side of the bottom of the outer frame 1. The cleaning port 1001 of the outer frame 1 can facilitate subsequent staff to clean up the impurities brushed off inside the outer frame 1, and filters are provided on the exhaust port and the air suction port of the outer frame 1. A support plate 2 is welded on the inner wall of the outer frame 1. A suction frame 3 is connected to the bottom of the inner wall of the outer frame 1 by bolts, and the suction frame 3 is connected to the air suction port of the outer frame 1. The suction frame 3 is used to suck the air in the dissection room into the outer frame 1, and a filter cartridge 4 is connected to the suction frame 3 by bolts, and the filter cartridge 4 is connected to the suction frame 3. Two one-way valves 41 are installed at the connection point. The filter cartridge 4 is filled with part of the filtered liquid, and the filtered liquid is used to remove harmful substances in the air. An air pump 5 is connected to one side of the top of the support plate 2 by bolts, and the air inlet of the air pump 5 is connected to the top of the filter cartridge 4 by a pipeline. An exhaust frame 6 is connected to the top of the inner wall of the outer frame 1 by bolts, and the exhaust frame 6 is connected to the exhaust port of the outer frame 1. The air outlet of the air pump 5 is connected to the bottom of the exhaust frame 6 by a pipeline. The air pump 5 is used to control the air flow, and the exhaust frame 6 is used to discharge the filtered air out of the outer frame 1. The filter cartridge 4 is provided with a stirring mechanism for stirring the filtered liquid and air, and the support plate 2 is provided with a switching mechanism for adsorbing and decomposing impurities.

[0036] The stirring mechanism includes a motor 71, which is connected to the upper part of the support plate 2 by bolts. The output shaft of the motor 71 is rotatably connected to the support plate 2. A bidirectional threaded shaft 72 is rotatably connected to the top of the filter cartridge 4. The top of the bidirectional threaded shaft 72 and the bottom of the output shaft of the motor 71 are both connected to a transmission gear 73 through a flat key. The two transmission gears 73 are meshed. The bottom of the bidirectional threaded shaft 72 is connected to a rotating shaft 74 through a coupling. The bottom of the rotating shaft 74 is rotatably connected to the bottom of the filter cartridge 4. Three stirring plates 75 are evenly welded on the outside of the rotating shaft 74. The stirring plates 75 are located inside the filter cartridge 4 and are used to stir the filtered liquid and air.

[0037] The stirring plate 75 is provided with a plurality of rotating strip holes, and the rotating strip holes of the stirring plate 75 are used to disperse the bubbles generated in the filtrate laterally.

[0038] The switching mechanism includes a transmission shaft 81, which is rotatably connected to one side of the support plate 2. A transmission assembly 82 is provided between the transmission shaft 81 and the output shaft of the motor 71. The bottom of the transmission shaft 81 is connected to a curved rod 83 through a flat key. A biological filter plate 84 is laterally slidably connected to the air suction frame 3. The side of the biological filter plate 84 away from the curved rod 83 is connected to another biological filter plate 84 by bolts. The two biological filter plates 84 are symmetrically arranged. The biological filter plates 84 are used to adsorb and decompose impurities contained in the inhaled air. One side of the biological filter plate 84 close to the curved rod 83 is connected to a slotted frame 85 by bolts, and the end of the curved rod 83 away from the transmission shaft 81 is slidably connected to the slotted frame 85.

[0039] The transmission assembly 82 is composed of a small pulley, a large pulley and a flat belt. The small pulley of the transmission assembly 82 is connected to the output shaft of the motor 71 through a flat key, and the large pulley of the transmission assembly 82 is connected to the transmission shaft 81 through a flat key. The flat belt of the transmission assembly 82 is wound between the large pulley and the small pulley of the transmission assembly 82.

[0040] Initially, the filter cartridge 4 is filled with some filtered liquid. Under the action of the one-way valve 41, the filtered liquid will not flow out of the filter cartridge 4, thereby keeping the horizontal surface of the filtered liquid at the top position of the stirring plate 75. When it is necessary to purify the air in the dissection room, the staff will first place the device in the dissection room, and then start the air pump 5 and the motor 71. The air pump 5 will suck the air to be purified from the air intake of the outer frame 1, the air intake frame 3, the biological filter plate 84, the one-way valve 41, the filter cartridge 4 and the filtered liquid in turn, and discharge the sucked air from the exhaust frame 6 and the exhaust port of the outer frame 1 in turn; in this process, the filter on the air intake of the outer frame 1 will filter the larger impurities in the air for the first time, and the first The filtered air will pass through the air suction frame 3 and the biological filter plate 84. The biological filter plate 84 will adsorb and decompose the smaller impurities in the air after the first filtration. The impurities that cannot be decomposed will always be adsorbed on the biological filter plate 84, thereby completing the second filtration. The air after the second filtration will enter the filter cartridge 4 through the one-way valve 41 to contact with the filtrate. The filtrate will filter the harmful substances contained in the air after the second filtration, thereby completing the third filtration. The air after the three filtrations will be discharged through the air pump 5, the exhaust frame 6 and the exhaust port of the outer frame 1, thereby completing the purification of the air in the dissection room. The filter on the exhaust port of the outer frame 1 can prevent impurities contained in the external air from entering the outer frame 1.

[0041] When filtering the air for the second time, the output shaft of the motor 71 rotates to drive the transmission shaft 81 and the bent rod 83 to rotate together through the transmission assembly 82. The rotation of the bent rod 83 first pulls the slotted frame 85 and the two biological filter plates 84 to move to one side, and then the bent rod 83 continues to rotate to squeeze the slotted frame 85 and the two biological filter plates 84 to reset together. Repeating this, the rotation of the bent rod 83 pulls and squeezes the slotted frame 85 to make the two biological filter plates 84 move back and forth horizontally. The reciprocating movement of the two biological filter plates 84 will continuously switch in the air suction frame 3, so that the air can be fully filtered for the second time.

[0042] When filtering the air for the third time, the air after the second filtration will generate bubbles in the filtrate and move upwards. The rotation of the output shaft of the motor 71 will drive the two-way threaded shaft 72, the rotating shaft 74 and the stirring plate 75 to rotate together through the two transmission gears 73. The rotation of the stirring plate 75 will stir the air and the filtrate after the second filtration. At the same time, the rotating bar holes of the stirring plate 75 will break up the bubbles laterally, making the bubbles smaller and denser, so that the air in the third filtration can fully contact the filtrate, and then the filtrate can more fully filter out harmful substances in the air, thereby further enhancing the purification effect of the air in the dissection room;

[0043] After the purification is completed, the staff turns off the motor 71 and the air pump 5, and cleans the impurities filtered on the filter screens at the air intake and exhaust ports of the outer frame 1. The staff can then replace the biological filter plate 84 according to the situation.

[0044] Embodiment 2: Based on embodiment 1, Figure 9-14As shown, it also includes a brushing mechanism, which is arranged on the suction frame 3. The brushing mechanism is used to brush away impurities attached to the biological filter plate 84. The brushing mechanism includes a limit rod 91. Four limit rods 91 are respectively welded to the upper sides of the suction frame 3. Sliding blocks 92 are vertically slidably connected to the four limit rods 91. The four sliding blocks 92 are in contact with the upper sides of the suction frame 3. Compression springs 93 are connected between the four sliding blocks 92 and the four limit rods 91 respectively. The two sliding blocks 92 on the same side are a group. The sides of the two sliding blocks 92 in the same group that are close to each other are slidably connected to wedge blocks 94. The two wedge blocks 94 on the sliding blocks 92 in the same group are a group. The two wedge blocks 94 of the same group are symmetrically arranged, and the two groups of wedge blocks 94 are also symmetrically arranged. Two return springs 95 are connected between the four wedge blocks 94 and the four sliding blocks 92 respectively. Brush strips 96 are installed on the sides of the two groups of sliding blocks 92 away from each other. The brush strips 96 are used to brush off the impurities adsorbed on the biological filter plate 84. The bottoms of the two biological filter plates 84 are connected with extrusion rods 97 by bolts. The sides of the two extrusion rods 97 away from each other are provided with downward pressing inclined surfaces. The downward pressing inclined surfaces of the extrusion rods 97 are used to squeeze the wedge blocks 94 to move downward, and the other side of the extrusion rods 97 can squeeze the two wedge blocks 94 on the same side to move in a direction away from each other.

[0045] It also includes an extrusion strip 11, and the two extrusion rods 97 are welded with an extrusion strip 11 on both sides. The two extrusion strips 11 on the same extrusion rod 97 form a group, and the two groups of extrusion strips 11 are provided with a lifting slope on the side close to each other. The lifting slope of the extrusion strip 11 is used to extrude the wedge block 94 to move upward.

[0046] When the two biological filter plates 84 are continuously switched, the movement of the biological filter plates 84 will drive the squeezing rod 97 and the squeezing strip 11 to move. The downward pressing inclined surface of the squeezing rod 97 will squeeze the two wedge blocks 94 on one side to move downward, thereby driving the two sliding blocks 92 and the two brush strips 96 on the same side to move downward together. The two compression springs 93 on the same side are compressed, and the brush strip 96 moves downward without contacting the biological filter plate 84. The squeezing rod 97 continues to move and no longer squeezes the wedge block 94. The compression spring 93 resets and drives the sliding block 92, the brush strip 96 and the wedge block 94 to reset together. The brush strip 96 resets and contacts the biological filter plate 84. Subsequently, while the two biological filter plates 84 are reset, the squeezing rod 97 resets and squeezes the two wedge blocks 94 to move away from each other. The reset spring 95 is compressed. Subsequently, after the squeezing rod 97 is reset, it no longer squeezes the wedge block 94. The reset spring 95 resets and drives the two wedge blocks 94 to return to the original position. During this process, the brush strip 96 will brush off the smaller impurities attached to the biological filter plate 84 and cannot be decomposed, and the brushed off smaller devices will accumulate on the upper part of the air suction frame 3, so that the biological filter plate 84 can more fully adsorb and decompose the smaller impurities in the air after the first filtration, thereby enhancing the purification effect of the air in the dissection room; while the extrusion strip 11 is reset, the lifting inclined surface of the extrusion strip 11 will squeeze the wedge block 94 that has moved to both sides to move further upward, and the further upward movement of the wedge block 94 will cause the brush strip 96 to move further upward through the sliding block 92 to fully contact the biological filter plate 84, thereby preventing the brush strip 96 from being difficult to contact the biological filter plate 84 after being worn, thereby increasing the service life of the second air filtration; after the purification is completed, the staff can clean the impurities accumulated on the upper part of the air suction frame 3 through the cleaning port 1001.

[0047] Embodiment 3: Based on embodiment 2, Figure 4-Figure 16 As shown, it also includes a breaking mechanism, which is arranged on the filter cartridge 4. The breaking mechanism is used to break up the bubbles generated in the filtered liquid for a second time. The breaking mechanism includes a limiting sleeve 101, which is connected to the top of the inner wall of the filter cartridge 4 by bolts. Vertical grooves are provided on both sides of the limiting sleeve 101. A threaded block 102 is threadedly connected to the bidirectional threaded shaft 72. Sliding rods 103 are bolted to both sides of the threaded block 102. The two sliding rods 103 are symmetrically arranged. The two sliding rods 103 are respectively slidably connected to the two vertical grooves of the limiting sleeve 101. An annular slide rail 104 is bolted between the bottoms of the two sliding rods 103. Three breaking plates 105 are evenly spaced and slidably connected to the annular slide rail 104. The three breaking plates 105 are respectively slidably connected to the three stirring plates 75. The breaking plates 105 are used to break up the bubbles in the filtered liquid.

[0048] The scattering plate 105 is provided with a plurality of vertical strip holes, and the vertical strip holes of the scattering plate 105 are used to vertically scatter the bubbles generated in the filtrate.

[0049] When filtering the air for the third time, the rotation of the stirring plate 75 will drive the breaking plate 105 to rotate, and the rotation of the two-way threaded shaft 72 will first drive the threaded block 102 and the sliding rod 103 to move downward along the vertical groove of the limit sleeve 101, and then the two-way threaded shaft 72 continues to rotate to drive the threaded block 102 and the sliding rod 103 to reset upward together, and repeat this process. The rotation of the two-way threaded shaft 72 will drive the threaded block 102 and the sliding rod 103 to move back and forth upward together, and then drive the annular slide rail 104 and the rotating breaking plate 105 to move back and forth up and down together, and the vertical bars of the breaking plate 105 will continuously break up the bubbles vertically, making the breaking of the bubbles more comprehensive, and then making it easy for the filtered liquid to contact with the bubbles, thereby further enhancing the purification effect of the air in the dissection room.

[0050] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An air purification device for an autopsy room, characterized in that: The invention comprises an outer frame (1), the outer frame (1) is provided with an exhaust port, a cleaning port (1001) and an air suction port, the exhaust port and the air suction port of the outer frame (1) are both provided with filter screens, the outer frame (1) is fixedly connected with a support plate (2) and an air suction frame (3), the air suction frame (3) is fixedly connected with a filter cartridge (4), the filter cartridge (4) is provided with two one-way valves (41), the support plate (2) is provided with an air pump (5), the air inlet of the air pump (5) is connected to the filter cartridge (4), the outer frame (1) is fixedly connected with an exhaust frame (6), the air outlet of the air pump (5) is connected to the exhaust frame (6), the filter cartridge (4) is provided with a stirring mechanism, and the support plate (2) is provided with a switching mechanism; The stirring mechanism comprises a motor (71), the motor (71) being mounted on a support plate (2), the output shaft of the motor (71) being rotatably connected to the support plate (2), a bidirectional threaded shaft (72) being rotatably connected to the filter cartridge (4), a transmission gear (73) being fixedly connected to the bidirectional threaded shaft (72) and the output shaft of the motor (71), the two transmission gears (73) being meshed, a rotating shaft (74) being fixedly connected to the bidirectional threaded shaft (72), the rotating shaft (74) being rotatably connected to the filter cartridge (4), and three stirring plates (75) being fixedly connected to the rotating shaft (74); The filter further comprises a dispersing mechanism, which is arranged on the filter cartridge (4) and is used for performing secondary dispersing of bubbles generated in the filtered liquid. The dispersing mechanism comprises a limiting sleeve (101), which is fixedly connected to the filter cartridge (4), and vertical grooves are formed on both sides of the limiting sleeve (101). A threaded block (102) is threadedly connected to the bidirectional threaded shaft (72), and sliding rods (103) are fixedly connected to both sides of the threaded block (102). The two sliding rods (103) are respectively slidably connected to the two vertical grooves of the limiting sleeve (101), and an annular slide rail (104) is fixedly connected between the bottoms of the two sliding rods (103). Three dispersing plates (105) are slidably connected to the annular slide rail (104), and the three dispersing plates (105) are respectively slidably connected to the three stirring plates (75).

2. The air purification device for an autopsy room according to claim 1, characterized in that: The stirring plate (75) is provided with a plurality of rotating strip holes.

3. The air purification device for an autopsy room according to claim 2, characterized in that: The switching mechanism comprises a transmission shaft (81), the transmission shaft (81) being rotatably connected to the support plate (2), a transmission assembly (82) being provided between the transmission shaft (81) and the output shaft of the motor (71), a curved rod (83) being fixedly connected to the transmission shaft (81), a biological filter plate (84) being slidably connected to the air suction frame (3), another biological filter plate (84) being mounted on one side of the biological filter plate (84), a slotted frame (85) being mounted on one of the biological filter plates (84), and the curved rod (83) being slidably connected to the slotted frame (85).

4. The air purification device for an autopsy room according to claim 3, characterized in that: The transmission assembly (82) is composed of a small pulley, a large pulley and a flat belt. The small pulley of the transmission assembly (82) is mounted on the output shaft of the motor (71), the large pulley of the transmission assembly (82) is mounted on the transmission shaft (81), and the flat belt of the transmission assembly (82) is wound between the large pulley and the small pulley of the transmission assembly (82).

5. The air purification device for an autopsy room according to claim 4, characterized in that: The invention also comprises a brushing mechanism, which is arranged on the air suction frame (3) and is used to brush away impurities attached to the biological filter plate (84). The brushing mechanism comprises a limit rod (91), four limit rods (91) are fixedly connected to the air suction frame (3), and sliding blocks (92) are slidably connected to the four limit rods (91). The four sliding blocks (92) are in contact with both sides of the upper part of the air suction frame (3). Compression springs (93) are connected between the four sliding blocks (92) and the four limit rods (91), respectively. Wedge blocks (94) are slidably connected to the four sliding blocks (92), and two return springs (95) are connected between the four wedge blocks (94) and the four sliding blocks (92), respectively. Brush strips (96) are installed on the four sliding blocks (92), and extrusion rods (97) are installed on the two biological filter plates (84). The two extrusion rods (97) are provided with downward pressing inclined surfaces on the sides away from each other.

6. The air purification device for an autopsy room according to claim 5, characterized in that: It also includes an extrusion strip (11), to which the two extrusion rods (97) are fixedly connected, and a lifting inclined surface is provided on the extrusion strip (11).

7. An air purification device for an autopsy room according to claim 6, characterized in that: The breaking up plate (105) is provided with a plurality of vertical strip holes.

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