Ventilation device for dissecting room

Abstract

The present invention relates to the technical field of ventilation equipment for dissecting rooms, and in particular to a ventilation device for dissecting rooms. The technical problem is that when the current ventilation device ventilates the dissecting room, it is difficult to carry out targeted ventilation for the specimen, resulting in insufficient comprehensive suppression of the diffusion of the odor of the chemical solvent on the specimen, and it is not convenient to prevent the air from directly contacting the specimen from multiple directions, resulting in the chemical solvent on the specimen easily evaporating too quickly and polluting the air, thereby resulting in poor ventilation effect for the dissecting room. A ventilation device for dissecting rooms includes a base, one end of which is fixedly connected to an arc-shaped arm, and a dissecting table is placed on the base. When no dissecting operation is performed, the suction bin is aligned with the specimen to absorb air, and when it is necessary to perform a dissecting operation on the specimen, the suction bin can be withdrawn, so that the specimen can be ventilated in a targeted manner, thereby more comprehensively suppressing the diffusion of the odor of the chemical solvent on the specimen, thereby enhancing the ventilation effect for the dissecting room.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation equipment for dissecting rooms, and in particular to a ventilation device for dissecting rooms. Background Art

[0002] Specimens in the dissection room are usually preserved using chemical solvents such as formalin. When the specimens are dissected, the evaporation of the solvent on the specimens will release a strong pungent odor. This odor permeates the dissection room, affecting the sensory experience of people inside and even threatening their health. Therefore, the dissection room needs to be ventilated. When ventilating the dissection room, two blowers are usually used to deliver fresh air into the dissection room and exhaust polluted air, thereby achieving a ventilation effect for the dissection room.

[0003] Since the main source of odor in the dissection room is the chemical solvents on the specimens, and the current ventilation devices are difficult to perform targeted ventilation on the specimens when ventilating the dissection room, resulting in insufficient suppression of the diffusion of the odor of the chemical solvents on the specimens, and when ventilating the specimens, the air will blow toward the specimens from multiple directions, and the current ventilation devices are not convenient for preventing the air from directly contacting the specimens from multiple directions when ventilating the specimens, resulting in the chemical solvents on the specimens easily evaporating too quickly and polluting the air, resulting in poor ventilation effect of the ventilation devices on the dissection room. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides a ventilation device for an autopsy room, which can perform targeted ventilation on specimens, thereby more comprehensively suppressing the diffusion of the odor of chemical solvents on the specimens and preventing air from directly contacting the specimens from multiple directions so that the chemical solvents on the specimens will not evaporate too quickly and pollute the air, thereby enhancing the ventilation effect of the ventilation device on the autopsy room.

[0005] The technical solution is: a ventilation device for an autopsy room, including a base, two air ducts are provided in the base, four ventilation slots are provided on the base, the four ventilation slots of the base are respectively connected to the two air ducts of the base, an arc-shaped arm is fixedly connected to one end of the base, a dissecting table is placed on the base, a ventilation component for ventilation is provided on the arc-shaped arm, a lifting mechanism for absorbing odors on the surface of the dissecting table is provided on the base, and a centralizing mechanism for blocking the air ducts of the base is provided on the lifting mechanism.

[0006] Furthermore, it also includes an anti-skid pad, wherein two anti-skid pads are respectively fixedly connected to both sides of the top of the base, and the two anti-skid pads are symmetrically arranged.

[0007] Furthermore, the ventilation assembly includes a first blower, which is fixedly connected to the lower part of the arc-shaped arm, and the air inlet of the first blower is fixedly connected to a three-way pipe, and the three-way pipe is communicated with the air inlet of the first blower, and the three-way pipe is fixedly connected to the base, and the three-way pipe is communicated with two air ducts of the base, and the upper part of the arc-shaped arm is fixedly connected to a second blower, and the top end of the arc-shaped arm close to the dissecting table is fixedly connected to an air outlet bin, and the air outlet bin is fixedly connected to the air outlet of the second blower, and the air outlet of the second blower is communicated with the air outlet bin.

[0008] Furthermore, it also includes filter plates, four of which are fixedly connected to the four ventilation slots of the base respectively, two of the filter plates on the same side form a group, and there are two groups of filter plates in total, and the two filter plates in each group are symmetrically arranged, and the two groups of filter plates are symmetrically arranged.

[0009] Furthermore, the lifting mechanism includes a support frame, the two support frames are fixedly connected to both sides of the top of the base, the two support frames are symmetrically arranged, the middle parts of the two support frames are fixedly connected with electric push rods, the two support frames are slidably connected with suction bins, the bottoms of the two suction bins are respectively fixedly connected to the telescopic rods of the two electric push rods, the bottoms of the two suction bins are respectively fixedly connected to the telescopic rods of the two electric push rods, the bottoms of the two suction bins are respectively fixedly connected with connecting pipes, the two connecting pipes are respectively connected to the inside of the two suction bins, and the two connecting pipes are respectively connected to the two air ducts of the base.

[0010] Furthermore, the centralizing mechanism includes a synchronization rod, and the two synchronization rods are respectively fixedly connected to the sides of the two suction bins away from each other. The two support frames are rotatably connected to two rotating rods, and the rotating rods are provided with spiral grooves. The two rotating rods on the same support frame form a group, and there are two groups of rotating rods in total. The two rotating rods in each group are symmetrically arranged, and the two groups of rotating rods are symmetrically arranged. The spiral grooves of the four rotating rods are respectively slidably connected to the two ends of the two synchronization rods, and a sealing plate is fixedly connected to the bottom of each rotating rod, and the two sealing plates on the same group of rotating rods form a group, and there are two groups of sealing plates in total. The two sealing plates in each group are symmetrically arranged, and the two groups of sealing plates are symmetrically arranged, and the four sealing plates are respectively fitted with the four ventilation slots of the base and the two air ducts connecting the base.

[0011] Furthermore, it also includes a shielding mechanism, which is arranged on the air suction bin, and is used to shield the specimen on the dissecting table. The shielding mechanism includes a connecting block, and the two connecting blocks are respectively fixedly connected to the bottom of one end of the two air suction bins close to the arc-shaped arms, and the two connecting blocks are symmetrically arranged. A T-shaped frame is fixedly connected to the arc-shaped arm, and both ends of the T-shaped frame are slidably connected to sliding frames. The two sliding frames are symmetrically arranged, and the ends of the two sliding frames close to the dissecting table are respectively rotatably connected to the two connecting blocks. The two connecting rods are symmetrically arranged, and the two sides of the arc-shaped arm are respectively rotatably connected to rotating arms, and a sliding groove is opened at one end of the bottom of the rotating arm. The sliding grooves of the two rotating arms are respectively slidably connected to one end of the two sliding frames close to the arc-shaped arms, and a lifting cover is slidably connected to the air outlet bin.

[0012] Furthermore, it also includes rollers, two of which are fixedly connected to the two ends of the top of the lifting cover, and the two rollers are symmetrically arranged, and the two rollers are in contact with the tops of the two rotating arms respectively.

[0013] Furthermore, it also includes an extension mechanism, which is arranged on the lifting cover, and is used to guide the flow direction of air. The extension mechanism includes rotating blades, and two of the rotating blades are rotatably connected to the inside of the lifting cover. The two rotating blades are symmetrically arranged, and one end of the two rotating blades close to the arc arm is fixedly connected to a crankshaft, and a guide groove is opened on the crankshaft. A limiting plate is fixedly connected in the air outlet bin, and a lifting frame is slidably connected to the limiting plate, and the two ends of the bottom of the lifting frame are respectively slidably connected to the guide grooves of the two crankshafts, and the lifting frame is slidably connected to the air outlet bin.

[0014] Furthermore, it also includes a protective cover, wherein two protective covers are respectively fixedly connected to two sides of the base, and the two protective covers are symmetrically arranged.

[0015] Beneficial effects: 1. When no anatomical operation is performed, the suction chamber is aimed at the specimen to absorb air, and when the specimen needs to be anatomized, the suction chamber can be withdrawn, so that the specimen can be ventilated in a targeted manner, thereby more comprehensively suppressing the diffusion of the odor of chemical solvents on the specimen, thereby enhancing the ventilation effect of the ventilation device on the dissection room.

[0016] 2. The suction chamber performs targeted ventilation on the specimen while closing the ventilation slots of the base through the sealing sheet, so that the suction force is not dispersed by the ventilation slots of the base when the specimen is ventilated in a targeted manner, so that the suction force of the ventilation device is more concentrated when the specimen is ventilated in a targeted manner, thereby further enhancing the ventilation effect of the ventilation device on the dissection room.

[0017] 3. When the air is blown downward, it is blocked by the shielding hood and the air flow is guided by the rotating blades, thereby preventing the air from directly contacting the specimen from multiple directions, so that the chemical solvents on the specimen will not evaporate too quickly and pollute the air, thereby further enhancing the ventilation effect of the ventilation device on the dissection room. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the ventilation mechanism of the present invention.

[0020] Figure 3 It is a partial three-dimensional structural schematic diagram of the ventilation mechanism of the present invention.

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the lifting mechanism of the present invention.

[0022] Figure 5 It is a partial three-dimensional structural schematic diagram of the lifting mechanism of the present invention.

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the lifting mechanism and the centralizing mechanism of the present invention.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the centralizing mechanism of the present invention.

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the lifting mechanism and the shielding mechanism of the present invention.

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the shielding mechanism of the present invention.

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the shielding mechanism and the extending mechanism of the present invention.

[0028] Fig.11 It is a schematic diagram of the three-dimensional structure of the extension mechanism of the present invention.

[0029] Markings in the figure are: 1-base, 2-arc arm, 3-anti-slip mat, 4-dissection table, 51-first blower, 52-three-way pipe, 53-filter plate, 54-second blower, 55-air outlet bin, 61-support frame, 62-electric push rod, 63-air suction bin, 64-connecting pipe, 71-synchronizing rod, 72-rotating rod, 73-sealing plate, 81-connecting block, 82-connecting rod, 83-T-shaped frame, 84-sliding frame, 85-rotating arm, 86-lifting cover, 87-roller, 91-rotating blade, 92-crankshaft, 93-limiting plate, 94-lifting frame, 10-protective cover. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0031] Embodiment 1: A ventilation device for an autopsy room, such as Figure 1-Figure 7 As shown, it includes a base 1, two air ducts are opened in the base 1, four ventilation slots are opened on the base 1, the four ventilation slots of the base 1 are respectively connected with the two air ducts of the base 1, the four ventilation slots of the base 1 are used to inhale polluted air, one end of the base 1 is connected with an arc arm 2 by bolts, a dissecting table 4 is placed on the base 1, the dissecting table 4 is used for dissecting specimens, a ventilation component for ventilation is provided on the arc arm 2, a lifting mechanism for absorbing odors on the surface of the dissecting table 4 is provided on the base 1, and a centralizing mechanism for blocking the air duct of the base 1 is provided on the lifting mechanism.

[0032] It also includes an anti-skid pad 3. Two anti-skid pads 3 are respectively connected to the two sides of the top of the base 1 by bolts. The two anti-skid pads 3 are symmetrically arranged. The anti-skid pads 3 are used to increase the safety of the operator when performing anatomical operations.

[0033] The ventilation assembly includes a first blower 51, which is connected to the lower part of the arc arm 2 by bolts, and the air inlet of the first blower 51 is connected to a three-way pipe 52 by bolts, and the three-way pipe 52 is communicated with the air inlet of the first blower 51, and the three-way pipe 52 is connected to the base 1 by bolts, and the three-way pipe 52 is communicated with the two air ducts of the base 1, and the upper part of the arc arm 2 is connected to a second blower 54 by bolts, and the top end of the arc arm 2 close to the dissecting table 4 is connected to an air outlet bin 55 by bolts, and the air outlet bin 55 is used to output fresh air, and the air outlet bin 55 is connected to the air outlet of the second blower 54 by bolts, and the air outlet of the second blower 54 is communicated with the air outlet bin 55.

[0034] It also includes filter plates 53, and four of the filter plates 53 are respectively connected to the four ventilation slots of the base 1 by bolts. The two filter plates 53 on the same side form a group. There are two groups of filter plates 53 in total, and the two filter plates 53 in each group are symmetrically arranged. The two groups of filter plates 53 are symmetrically arranged, and the filter plates 53 are used to intercept fallen debris and debris.

[0035] The lifting mechanism includes a support frame 61, and the two support frames 61 are connected to both sides of the top of the base 1 by bolts. The two support frames 61 are symmetrically arranged, and the middle parts of the two support frames 61 are connected with electric push rods 62 by bolts. The two support frames 61 are slidably connected with suction bins 63, and the suction bins 63 are used to inhale polluted air. The bottoms of the two suction bins 63 are respectively connected to the telescopic rods of the two electric push rods 62 by bolts, and the bottoms of the two suction bins 63 are respectively connected to connecting pipes 64 by bolts. The two connecting pipes 64 are respectively connected to the inside of the two suction bins 63, and the two connecting pipes 64 are respectively connected to the two air ducts of the base 1.

[0036] The centralizing mechanism includes a synchronous rod 71, and the two synchronous rods 71 ​​are respectively connected to the sides of the two suction bins 63 away from each other by bolts. Two rotating rods 72 are rotatably connected to the two support frames 61, and the rotating rods 72 are provided with spiral grooves. The two rotating rods 72 on the same support frame 61 form a group, and there are two groups of rotating rods 72 in total. The two rotating rods 72 in each group are symmetrically arranged. The two groups of rotating rods 72 are symmetrically arranged, and the spiral grooves of the four rotating rods 72 are respectively connected to the two synchronous rods. The two ends of the rod 71 are slidably connected, and a sealing sheet 73 is connected to the bottom of each rotating rod 72 by bolts. The two sealing sheets 73 on the same group of rotating rods 72 form a group. There are two groups of sealing sheets 73 in total. The two sealing sheets 73 in each group are symmetrically arranged. The two groups of sealing sheets 73 are symmetrically arranged. The synchronization rod 71 is used to squeeze the spiral groove of the rotating rod 72 to drive the sealing sheet 73 to rotate. The four sealing sheets 73 are respectively fitted with the four ventilation grooves of the base 1 and the two air duct connecting parts of the base 1.

[0037] It also includes a protective cover 10. Two protective covers 10 are respectively connected to the two sides of the base 1 by bolts. The two protective covers 10 are symmetrically arranged. The protective covers 10 are used to protect the operator.

[0038] First, the operator connects the air outlet of the first blower 51 and the air inlet of the second blower 54 to the outside through pipes respectively. After placing the specimen on the dissecting table 4, the operator starts the first blower 51 and the second blower 54. The first blower 51 sucks out the air in the two air ducts of the base 1 through the three-way pipe 52, so that the air duct of the base 1 inhales air through the four ventilation slots of the base 1. The second blower 54 inputs fresh air from the top to the dissecting table 4 through the air outlet bin 55, thereby ventilating the dissecting room. At the same time, the air duct of the base 1 sucks out the air in the air suction bin 63 through the two connecting pipes 64, so that the two air suction bins 63 inhale the air into the dissecting table 4. When the operator needs to dissect the specimen on one side of the dissecting table 4, the operator controls the telescopic rod of the electric push rod 62 on one side of the dissecting table 4 to retract and drive the suction bin 63 to move downward. After the suction bin 63 moves downward for a certain distance, it no longer blocks the dissecting table 4. Then the operator stands on the anti-slip mat 3 to operate, and the anti-slip mat 3 can increase the safety of the operator when performing the dissecting operation. In this way, when the dissecting operation is not performed, the suction bin 63 is aimed at the specimen to absorb air, and when the dissecting operation is required, the suction bin 63 can be withdrawn, so that the specimen can be ventilated in a targeted manner, thereby more comprehensively suppressing the diffusion of the odor of the chemical solvent on the specimen. The ventilation effect of the ventilation device on the dissecting room is enhanced; the suction bin 63 will press against the spiral groove of the rotating rod 72 through the synchronous rod 71 on the upper part of the dissecting table 4, so that the rotating rod 72 blocks the connection between the ventilation slots of the base 1 and the air duct of the base 1 through the sealing sheet 73, so that the four ventilation slots of the base 1 cannot inhale air; when the suction bin 63 moves downward and no longer ventilates the specimen in a targeted manner, the suction bin 63 will drive the rotating rod 72 to rotate through the synchronous rod 71, and the rotation of the rotating rod 72 will no longer block the connection between the ventilation slots of the base 1 and the air duct of the base 1 through the sealing sheet 73, so that the ventilation slots of the base 1 start to inhale air, so that the suction bin 63 ventilates the specimen While performing targeted ventilation, the ventilation slots of the base 1 are closed through the sealing sheet 73, so that the suction force is not dispersed by the ventilation slots of the base 1 when the specimen is ventilated in a targeted manner, so that the suction force of the ventilation device is more concentrated when the specimen is ventilated in a targeted manner, thereby further enhancing the ventilation effect of the ventilation device on the dissection room; when the ventilation slots of the base 1 inhale air, the air will first pass through the filter plate 53 and then enter the ventilation slots of the base 1, thereby intercepting the fallen debris and debris, so that the debris and debris will not be inhaled into the air duct of the base 1 to cause blockage; at the same time, the two protective covers 10 are used to block the air, thereby protecting the operator, thereby making the operation process safer;After the dissection operation of the specimen is completed, the operator controls the telescopic rod of the electric push rod 62 to extend and drive the suction chamber 63 to reset. The reset of the suction chamber 63 will drive the rotating rod 72 to reset through the synchronous rod 71. The reset of the rotating rod 72 makes the sealing sheet 73 return to the initial state. Then the operator can turn off the first blower 51 and the second blower 54. ;

[0039] Embodiment 2: Based on embodiment 1, Figure 1-Figure 11 As shown, a shielding mechanism is also included, the shielding mechanism is arranged on the suction bin 63, the shielding mechanism is used to shield the specimen on the dissecting table 4, the shielding mechanism includes a connecting block 81, the two connecting blocks 81 are respectively connected to the bottom of one end of the two suction bins 63 close to the arc-shaped arm 2 by bolts, the two connecting blocks 81 are symmetrically arranged, a T-shaped frame 83 is connected to the arc-shaped arm 2 by bolts, both ends of the T-shaped frame 83 are slidably connected to a sliding frame 84, the two sliding frames 84 are symmetrically arranged, and the two sliding frames 84 are close to the dissecting table 4. One end is rotatably connected with a connecting rod 82 between the two connecting blocks 81, and the two connecting rods 82 are symmetrically arranged. The connecting rod 82 is used to push and pull the sliding frame 84 to move. The two sides of the arc arm 2 are rotatably connected with rotating arms 85, and a sliding groove is opened at one end of the bottom of the rotating arm 85. The sliding grooves of the two rotating arms 85 are respectively slidably connected to one end of the two sliding frames 84 close to the arc arm 2. The sliding frame 84 is used to drive the rotating arm 85 to rotate by squeezing the sliding groove of the rotating arm 85. A lifting cover 86 is slidably connected to the air outlet bin 55.

[0040] It also includes rollers 87, and two of the rollers 87 are connected to the two ends of the top of the lifting cover 86 through keyways, and the two rollers 87 are symmetrically arranged. The two rollers 87 are in contact with the tops of the two rotating arms 85 respectively, and the rollers 87 are used to reduce the friction between the rotating arms 85 and the lifting cover 86.

[0041] It also includes an extension mechanism, which is arranged on the lifting cover 86, and is used to guide the flow direction of air. The extension mechanism includes a rotating blade 91, and the two rotating blades 91 are rotatably connected to the inside of the lifting cover 86. The two rotating blades 91 are symmetrically arranged, and the two rotating blades 91 are fixedly connected to a crankshaft 92 at one end close to the arc arm 2, and a guide groove is opened on the crankshaft 92. A limiting plate 93 is fixedly connected in the air outlet bin 55, and a lifting frame 94 is slidably connected to the limiting plate 93. The two ends of the bottom of the lifting frame 94 are respectively slidably connected to the guide grooves of the two crankshafts 92, and the lifting frame 94 is slidably connected to the air outlet bin 55.

[0042] Initially, the air outlet bin 55 abuts against the lifting frame 94, so that the lifting frame 94 pulls the two crankshafts 92 through the guide grooves of the two crankshafts 92, so that the two rotating blades 91 are in an outwardly expanded state. When the air outlet bin 55 blows out fresh air downward, the air will be blocked by the lifting cover 86 and diffused to both sides through the guidance of the rotating blades 91. In this way, when the air is blown downward, it is blocked by the shielding cover and the air flow is guided by the rotating blades 91, thereby preventing the air from directly contacting the specimen from multiple directions, so that the chemical solvent on the specimen will not evaporate too quickly to pollute the air, thereby further enhancing the ventilation effect of the ventilation device on the dissection room. When any one of the suction bins 63 moves downward, the suction bin 63 will drive the connecting block 81 to move downward. The downward movement of the connecting block 81 will squeeze the sliding frame 84 through the connecting rod 82 to move in the direction away from the dissecting table 4. The movement of the sliding frame 84 will squeeze the sliding groove of the rotating arm 85 to drive the rotating arm 85 to rotate upward. The upward rotation of the rotating arm 85 will squeeze the lifting cover 86 to move upward through the roller 87, and then the friction between the lifting cover 86 and the rotating arm 85 can be reduced through the roller 87. The upward movement of the lifting cover 86 will drive the two rotating leaves 91 to move upward, so that the two rotating leaves 91 drive the lifting frame 9 through the two crankshafts 92 4 moves upward, so that the air outlet bin 55 no longer presses against the lifting frame 94. After the lifting frame 94 moves upward for a certain distance, it will contact the limit plate 93, and the lifting cover 86 will continue to drive the two rotating blades 91 to move upward. At this time, the lifting frame 94 will press against the two crankshafts 92 through the guide grooves of the two crankshafts 92, so that the rotating blades 91 rotate in the direction of approaching each other, so that the two rotating blades 91 are no longer in an outwardly expanded state. In this way, when it is necessary to perform an anatomical operation on the specimen, the lifting cover 86 is raised upward and the rotating blades 91 are retracted, so that the operating space on the upper part of the dissecting table 4 is not affected by the lifting cover 86 and the rotating blades 91; After the dissection operation is completed, the reset of the suction bin 63 will drive the reset of the connecting block 81, and the reset of the connecting block 81 will pull the sliding frame 84 to reset through the connecting rod 82. The reset of the sliding frame 84 will reset the rotating arm 85, so that the rotating arm 85 is no longer reset by the roller 87 against the lifting cover 86. The reset of the lifting cover 86 will drive the two rotating leaves 91 to move downward, and the two rotating leaves 91 drive the lifting frame 94 to move downward through the two crankshafts 92. After the lifting frame 94 moves downward for a certain distance, it is resisted by the air outlet bin 55, and the lifting cover 86 continues to move downward, so that the lifting frame 94 pulls the two rotating leaves 91 back to the initial state through the two crankshafts 92.

[0043] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A ventilation device for an autopsy room, characterized in that: The invention comprises a base (1), wherein two air ducts are provided in the base (1), and four ventilation slots are provided on the base (1), wherein the four ventilation slots of the base (1) are respectively connected to the two air ducts of the base (1), and an arc-shaped arm (2) is fixedly connected to one end of the base (1), and a dissecting table (4) is placed on the base (1), and a ventilation assembly for ventilation is provided on the arc-shaped arm (2), and a lifting mechanism for absorbing odors on the surface of the dissecting table (4) is provided on the base (1), and a centralizing mechanism for blocking the air duct of the base (1) is provided on the lifting mechanism; The ventilation assembly comprises a first blower (51), the first blower (51) being fixedly connected to the lower part of the arc-shaped arm (2), the air inlet of the first blower (51) being fixedly connected to a three-way pipe (52), the three-way pipe (52) being in communication with the air inlet of the first blower (51), the three-way pipe (52) being fixedly connected to the base (1), the three-way pipe (52) being in communication with two air ducts of the base (1), the upper part of the arc-shaped arm (2) being fixedly connected to a second blower (54), the top end of the arc-shaped arm (2) close to the dissecting table (4) being fixedly connected to an air outlet bin (55), the air outlet bin (55) being fixedly connected to the air outlet of the second blower (54), the air outlet of the second blower (54) being in communication with the air outlet bin (55); The lifting mechanism comprises a support frame (61), the two support frames (61) are fixedly connected to both sides of the top of the base (1), the two support frames (61) are symmetrically arranged, the middle parts of the two support frames (61) are fixedly connected to an electric push rod (62), the two support frames (61) are slidably connected to an air suction bin (63), the bottoms of the two air suction bins (63) are respectively fixedly connected to the telescopic rods of the two electric push rods (62), the bottoms of the two air suction bins (63) are respectively fixedly connected to connecting pipes (64), the two connecting pipes (64) are respectively connected to the inside of the two air suction bins (63), and the two connecting pipes (64) are respectively connected to two air ducts of the base (1); The centralizing mechanism comprises a synchronization rod (71), the two synchronization rods (71) being respectively fixedly connected to the sides of the two suction bins (63) which are away from each other, the two support frames (61) being rotatably connected to two rotating rods (72), the rotating rods (72) being provided with spiral grooves, the two rotating rods (72) on the same support frame (61) forming a group, the rotating rods (72) being two groups in total, the two rotating rods (72) in each group being symmetrically arranged, the two groups of rotating rods (72) being symmetrically arranged, and the four rotating rods (72) being symmetrically arranged. The spiral groove of the rod (72) is respectively slidably connected to the two ends of the two synchronous rods (71); a sealing sheet (73) is fixedly connected to the bottom of each rotating rod (72); the two sealing sheets (73) on the same group of rotating rods (72) form a group; there are two groups of sealing sheets (73); the two sealing sheets (73) in each group are symmetrically arranged; the two groups of sealing sheets (73) are symmetrically arranged; the four sealing sheets (73) are respectively fitted with the four ventilation grooves of the base (1) and the two air ducts of the base (1) at the connection points.

2. A ventilation device for an autopsy room according to claim 1, characterized in that: It also comprises an anti-skid pad (3), wherein two anti-skid pads (3) are respectively fixedly connected to two sides of the top of the base (1), and the two anti-skid pads (3) are symmetrically arranged.

3. A ventilation device for an autopsy room according to claim 2, characterized in that: It also includes filter plates (53), four of the filter plates (53) being fixedly connected to the four ventilation slots of the base (1), respectively, two of the filter plates (53) on the same side forming a group, and there are two groups of filter plates (53) in total, the two filter plates (53) in each group being symmetrically arranged, and the two groups of filter plates (53) being symmetrically arranged.

4. A ventilation device for an autopsy room according to claim 3, characterized in that: Also includes A shielding mechanism is provided on the air suction bin (63), and is used to shield the specimen on the dissecting table (4). The shielding mechanism comprises a connecting block (81), and two connecting blocks (81) are respectively fixedly connected to the bottom of one end of the two air suction bins (63) close to the arc-shaped arm (2), and the two connecting blocks (81) are symmetrically arranged. A T-shaped frame (83) is fixedly connected to the arc-shaped arm (2), and both ends of the T-shaped frame (83) are slidably connected to sliding frames (84), and the two sliding frames (84) are opposite to each other. The two sliding frames (84) are rotatably connected to the two connecting blocks (81) at one end close to the dissecting table (4), and the two connecting rods (82) are symmetrically arranged. Rotating arms (85) are rotatably connected to the two sides of the arc-shaped arm (2), and a sliding groove is provided at one end of the bottom of the rotating arm (85). The sliding grooves of the two rotating arms (85) are slidably connected to the ends of the two sliding frames (84) close to the arc-shaped arm (2), and a lifting cover (86) is slidably connected to the air outlet bin (55).

5. A ventilation device for an autopsy room according to claim 4, characterized in that: It also includes rollers (87), wherein two rollers (87) are respectively fixedly connected to the two ends of the top of the lifting cover (86), the two rollers (87) are symmetrically arranged, and the two rollers (87) are respectively in contact with the tops of the two rotating arms (85).

6. A ventilation device for an autopsy room according to claim 5, characterized in that: The invention also comprises an extension mechanism, the extension mechanism being arranged on the lifting cover (86), the extension mechanism being used to guide the flow direction of air, the extension mechanism comprising a rotating blade (91), the two rotating blades (91) being rotatably connected to the inside of the lifting cover (86), the two rotating blades (91) being symmetrically arranged, the two rotating blades (91) being fixedly connected to a crankshaft (92) at one end close to the arc-shaped arm (2), the crankshaft (92) being provided with a guide groove, a limit plate (93) being fixedly connected to the inside of the air outlet bin (55), a lifting frame (94) being slidably connected to the limit plate (93), the bottom ends of the lifting frame (94) being respectively slidably connected to the guide grooves of the two crankshafts (92), and the lifting frame (94) being slidably connected to the air outlet bin (55).

7. A ventilation device for an autopsy room according to claim 6, characterized in that: It also comprises a protective cover (10), wherein two protective covers (10) are respectively fixedly connected to two sides of the base (1), and the two protective covers (10) are symmetrically arranged.

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