Laboratory reagent shelf with exhaust system

Abstract

The invention discloses a laboratory reagent shelf with an exhaust system, and relates to the technical field of reagent shelves. The laboratory reagent shelf with the exhaust system comprises an experiment table, and the top of the experiment table is fixedly connected with a supporting seat. According to the laboratory reagent rack with the exhaust system, the height of the placement rack can be conveniently adjusted according to use requirements, the applicability is higher, and use is more convenient and faster; according to the reagent bottle limiting device, the reagent bottle can be well limited, meanwhile, under the air draft effect, the bottom of the reagent bottle can be adsorbed through a rubber ring, the reagent bottle is prevented from being collided and toppled over in the experiment process, and the reagent bottle limiting device is more stable and reliable; air exhaust operation can be conveniently performed on gaps among the reagent bottles, so that the air exhaust efficiency is higher, and the effect is better; and after air exhaust is completed, the cover plate can rotate downwards under the action of the first spring and block and seal the first air exhaust hole, dust, water stains and the like attached to the surface of the first air exhaust hole can be reduced, and the air exhaust efficiency and effect of the air exhaust device are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of reagent racks, in particular to a laboratory reagent rack with a self-exhaust system. Background Art

[0002] The laboratory reagent rack mainly includes a laboratory table and a reagent rack body, and the laboratory reagent rack is used to place reagent bottles, etc. In the existing reagent rack, due to the characteristics of the reagents themselves, when conducting experiments, the gas evaporates in the laboratory, making the laboratory environment poor, so it is necessary to set an exhaust system on the reagent rack to exhaust the volatile gas and treat it uniformly.

[0003] However, when the existing laboratory reagent rack with its own exhaust system is in use, the reagent bottles may collide and fall over during the experiment, which is not safe and reliable. The reagents are likely to remain on the surface of the reagent bottles and on the rack. The existing exhaust system is not convenient for exhausting the gaps between the reagent bottles on the reagent rack, which affects the efficiency and effect of the exhaust. At the same time, the surface of the exhaust holes of the exhaust system is exposed to the outside for a long time, which is easy to be attached with impurities such as dust and water stains, which will also affect the efficiency and effect of the exhaust. In addition, it is not convenient to adjust the height of the rack according to usage requirements, and the applicability is poor, which affects the use effect. Summary of the invention

[0004] The object of the present invention is to provide a laboratory reagent rack with a self-contained exhaust system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laboratory reagent rack with a built-in exhaust system, comprising a laboratory bench, a support base is fixedly connected to the top of the laboratory bench, and an exhaust hood is fixedly connected to the top of the support base, a plurality of first exhaust holes arranged in an array are opened on the side wall of the exhaust hood, and a cover plate is rotatably connected to the side wall of the exhaust hood through a rotating mechanism, two hollow movable hoods are connected to the top of the laboratory bench through a lifting mechanism, and a plurality of fixed pipes arranged in an array are fixedly connected to the top of the movable hood, a placement rack is fixedly connected to the upper end of the fixed pipe, and a movable pipe is slidably connected to the fixed pipe through a telescopic mechanism, the upper end of the movable pipe passes through the bottom of the placement rack and is fixedly connected to a rubber ring, and a plurality of second exhaust holes arranged in an array are opened on the side wall of the movable pipe, an exhaust mechanism is provided on the side wall of the exhaust hood, and an L-shaped hose is fixedly connected to the side wall of the exhaust hood, a connecting pipe is fixedly inserted into the side wall of the movable hood, and the other end of the connecting pipe is fixed to the side wall of the hose, and an on-off mechanism is provided on the side wall of the connecting pipe.

[0006] Preferably, the lifting mechanism includes a first U-shaped frame and a second U-shaped frame fixedly connected to the top of the laboratory bench, and a threaded rod is rotatably connected between the first U-shaped frame and the laboratory bench, a rocker is fixedly connected to the upper end of the threaded rod, and a fixed rod is fixedly connected between the second U-shaped frame and the laboratory bench, and the side walls of each of the movable covers are fixedly connected to two symmetrically arranged connecting blocks, one of the connecting blocks is sleeved on the side wall of the fixed rod, and the other connecting block is threadedly connected to the side wall of the threaded rod.

[0007] Preferably, the rotating mechanism includes two symmetrically arranged support blocks fixedly connected to the side walls of the exhaust hood, the cover plate is rotatably connected to the side walls of the support blocks via a rotating shaft, and the side walls of the support blocks are provided with a driving mechanism for driving the rotating shaft to rotate.

[0008] Preferably, the driving mechanism comprises a gear fixedly mounted on the side wall of the rotating shaft, and the side wall of the supporting block is connected with a rack via a first reset mechanism, the rack is meshed with the gear, and the movement of the rack is driven by a driving mechanism.

[0009] Preferably, the first reset mechanism includes two symmetrically arranged fixed blocks fixedly connected to the side walls of the support block, and the side walls of the fixed blocks are fixedly connected to two symmetrically arranged guide rods, the side walls of the guide rods are sleeved with sliders, the sliders are fixed to the side walls of the rack, and the side walls of the guide rods are sleeved with a first spring.

[0010] Preferably, the pushing mechanism comprises an iron block fixedly connected to the bottom of the rack, and an electromagnet is fixedly connected to the bottom of the fixed block.

[0011] Preferably, the telescopic mechanism comprises a fixed ring fixedly connected to the inner wall of the fixed tube, and a sliding ring is slidably connected inside the fixed tube, the lower end of the movable tube is fixed to the top of the sliding ring, and a second spring is inserted into the fixed tube.

[0012] Preferably, the on-off mechanism comprises a fixed cover fixedly inserted in the side wall of the connecting pipe, and a sealing plate is slidably connected in the fixed cover via a second reset mechanism, and a through hole is opened in the side wall of the sealing plate.

[0013] Preferably, the second reset mechanism includes two symmetrically arranged first mounting blocks fixedly connected to the side walls of the sealing plate, and the bottom of the first mounting block is fixedly connected to two symmetrically arranged T-shaped guide rods, the side walls of the T-shaped guide rods are sleeved with second mounting blocks, and the second mounting blocks are fixed to the side walls of the fixed cover, and the side walls of the T-shaped guide rods are sleeved with third springs.

[0014] Preferably, the exhaust mechanism comprises a fan fixedly connected to the side wall of the exhaust hood, and an exhaust pipe is fixedly connected to the air outlet end of the fan.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The laboratory reagent rack with its own exhaust system is provided with a driving mechanism, etc., and when exhaust is needed during use, the fan is started, and at the same time, the electromagnet is energized, and the electromagnet attracts the iron block after being turned on and off, so that the rack slides along the side wall of the guide rod, and at the same time, the first spring is compressed, and when the rack moves, it drives the gear and the rotating shaft to rotate clockwise, and then the cover plate is rotated upward to open, and the first exhaust hole is exposed to perform normal exhaust operation, and at the same time, the cover plate can play a windproof role after being rotated upward, so that the exhaust effect is better. After the exhaust is completed, the electromagnet is powered off. At this time, the cover plate can be rotated downward under the action of the first spring to block and seal the first exhaust hole, which can reduce the adhesion of dust and water stains on the surface of the first exhaust hole, thereby ensuring the efficiency and effect of the exhaust.

[0016] The laboratory reagent rack with its own exhaust system is provided with a lifting mechanism, etc., and when the height of the rack needs to be adjusted, the rocker is rotated, and the rotation of the rocker drives the rotation of the threaded rod, thereby driving the connection block and the movable cover to be lifted and lowered, and the lifting and lowering of the movable cover drives the rack to be lifted and lowered through the fixed pipe, so that the height of the rack can be adjusted according to the use requirements, and the applicability is stronger and the use is more convenient and quicker.

[0017] The laboratory reagent rack with a built-in exhaust system is provided with a telescopic mechanism, etc., so that when a reagent bottle is placed on the rack, its bottom abuts against the top of the rubber ring, thereby pushing the movable tube to move downward along the fixed tube, and the second exhaust hole moves into the fixed tube, and makes the top of the rubber ring flush with the bottom of the rack. At the same time, the second spring is compressed, and the movable tube that is not at the bottom of the reagent bottle is in an extended state under the action of the second spring, thereby having a good limiting effect on the reagent bottle, and preventing the reagent bottle from colliding and tipping over during the experiment. It is more stable and reliable. At the same time, when the exhaust hood is exhausting, the movable hood is evacuated through the hose and the connecting pipe, and the second exhaust hole and the rubber ring are evacuated through the fixed pipe and the movable pipe. When the rubber ring is against the bottom of the reagent bottle, the rubber ring can adsorb the bottom of the reagent bottle under the action of exhaust, so as to avoid collision and tipping of the reagent bottle during the experiment. It is more stable and reliable, and the exhaust operation is carried out through the second exhaust hole, which is convenient for exhausting the gaps between the reagent bottles, thereby making the exhaust efficiency higher and the effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the exhaust mechanism in the present invention; Figure 3 It is a structural schematic diagram of the lifting mechanism in the present invention; Figure 4 It is a structural schematic diagram of the movable cover and the placement rack in the present invention; Figure 5 It is a partial structural schematic diagram of the placement rack, the movable tube and the fixed tube in the present invention; Figure 6 for Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 7 for Figure 5 A schematic diagram of the enlarged structure at B in the middle; Figure 8 for Figure 6 Schematic diagram of the enlarged structure at C in the middle; Fig. 9 for Figure 8 Schematic diagram of the enlarged structure at D in the middle.

[0019] In the figure: 1. Experimental table; 2. Lifting mechanism; 201. First U-shaped frame; 202. Threaded rod; 203. Rocker; 204. Second U-shaped frame; 205. Fixed rod; 206. Connecting block; 3. Rotating mechanism; 301. Support block; 302. Rotating shaft; 4. Driving mechanism; 401. Gear; 402. Rack; 5. First reset mechanism; 501. Fixed block; 502. Guide rod; 503. Sliding block; 504. First spring; 6. Pushing mechanism; 601. Iron block; 602. Electromagnet; 7. Telescopic mechanism; 701. Fixed ring; 702. Sliding ring; 703, second spring; 8, on-off mechanism; 801, fixed cover; 802, sealing plate; 803, through hole; 9, second reset mechanism; 901, first mounting block; 902, T-shaped guide rod; 903, second mounting block; 904, third spring; 10, exhaust mechanism; 1001, fan; 1002, exhaust duct; 11, support seat; 12, exhaust cover; 13, first exhaust hole; 14, cover plate; 15, rubber ring; 16, hose; 17, movable cover; 18, fixed pipe; 19, placement rack; 20, movable pipe; 21, second exhaust hole; 22, connecting pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 9The present invention provides a technical solution: a laboratory reagent rack with a self-contained exhaust system, comprising a laboratory table 1, a support seat 11 is fixedly connected to the top of the laboratory table 1, and an exhaust hood 12 is fixedly connected to the top of the support seat 11, a side wall of the exhaust hood 12 is provided with a plurality of first exhaust holes 13 arranged in an array, and a cover plate 14 is rotatably connected to the side wall of the exhaust hood 12 through a rotating mechanism 3, two hollow movable covers 17 are connected to the top of the laboratory table 1 through a lifting mechanism 2, and a plurality of fixed pipes 18 arranged in an array are fixedly connected to the top of the movable cover 17, a placement rack 19 is fixedly connected to the upper end of the fixed pipe 18, and a mobile pipe 20 is slidably connected to the fixed pipe 18 through a telescopic mechanism 7, the upper end of the mobile pipe 20 passes through the bottom of the placement rack 19 and is fixedly connected to a rubber ring 15, and a plurality of second exhaust holes 21 arranged in an array are provided on the side wall of the mobile pipe 20, and an exhaust The side wall of the hood 12 is provided with an exhaust mechanism 10, and the side wall of the exhaust hood 12 is fixedly connected with an L-shaped hose 16, the side wall of the movable hood 17 is fixedly inserted with a connecting pipe 22, and the other end of the connecting pipe 22 is fixed to the side wall of the hose 16, and the side wall of the connecting pipe 22 is provided with an on-off mechanism 8, which is convenient for adjusting the height of the placement rack 19 according to the use requirements, and has stronger applicability and is more convenient and quick to use; it can have a good limiting effect on the reagent bottle, and at the same time, under the action of exhaust, the rubber ring 15 can adsorb the bottom of the reagent bottle to avoid collision and tipping over of the reagent bottle during the experiment, which is more stable and reliable; after the exhaust is completed, the cover plate 14 can rotate downward under the action of the first spring 504 and seal the first exhaust hole 13, which can reduce the adhesion of dust and water stains on the surface of the first exhaust hole 13, and ensure its exhaust efficiency and effect.

[0022] The lifting mechanism 2 includes a first U-shaped frame 201 and a second U-shaped frame 204 fixedly connected to the top of the experimental table 1, and a threaded rod 202 is rotatably connected between the first U-shaped frame 201 and the experimental table 1, a rocking wheel 203 is fixedly connected to the upper end of the threaded rod 202, and a fixed rod 205 is fixedly connected between the second U-shaped frame 204 and the experimental table 1, and the side wall of each mobile cover 17 is fixedly connected to two symmetrically arranged connecting blocks 206, one of which is sleeved on the side wall of the fixed rod 205, and the other connecting block 206 is threadedly connected to the side wall of the threaded rod 202. When it is necessary to adjust the height of the placement rack 19, the rocking wheel 203 is rotated, and the rotation of the rocking wheel 203 drives the rotation of the threaded rod 202, thereby driving the connecting block 206 and the mobile cover 17 to be lifted and lowered, and the lifting and lowering of the mobile cover 17 drives the placement rack 19 to be lifted and lowered through the fixed tube 18, so as to facilitate the adjustment of the height of the placement rack 19 according to the use requirements, and the applicability is stronger and the use is more convenient and quick.

[0023] The rotating mechanism 3 includes two symmetrically arranged support blocks 301 fixedly connected to the side walls of the exhaust hood 12. The cover 14 is rotatably connected to the side walls of the support blocks 301 through a rotating shaft 302, and the side walls of the support blocks 301 are provided with a driving mechanism 4 for driving the rotating shaft 302 to rotate, thereby ensuring the normal rotation of the cover 14, and driving the rotating shaft 302 to rotate through the driving mechanism 4, thereby driving the cover 14 to rotate open and close.

[0024] The driving mechanism 4 includes a gear 401 fixedly mounted on the side wall of the rotating shaft 302, and the side wall of the support block 301 is connected to a rack 402 through a first reset mechanism 5, the rack 402 is meshed with the gear 401, and the movement of the rack 402 is driven by a pushing mechanism 6, and the rack 402 is pushed by the pushing mechanism 6 to move, and when the rack 402 moves, it drives the gear 401 and the rotating shaft 302 to rotate.

[0025] The first reset mechanism 5 includes two symmetrically arranged fixed blocks 501 fixedly connected to the side walls of the support block 301, and the side walls of the fixed blocks 501 are fixedly connected to two symmetrically arranged guide rods 502, the side walls of the guide rods 502 are sleeved with sliders 503, the sliders 503 are fixed to the side walls of the rack 402, and the side walls of the guide rods 502 are sleeved with first springs 504, which guide and reset the movement of the rack 402.

[0026] The pushing mechanism 6 includes an iron block 601 fixedly connected to the bottom of the rack 402, and an electromagnet 602 is fixedly connected to the bottom of the fixed block 501. When the electromagnet 602 is energized, the electromagnet 602 attracts the iron block 601 after being turned on and off, so that the rack 402 slides along the side wall of the guide rod 502.

[0027] The telescopic mechanism 7 includes a fixed ring 701 fixedly connected to the inner wall of the fixed tube 18, and a sliding ring 702 is slidably connected in the fixed tube 18, the lower end of the movable tube 20 is fixed to the top of the sliding ring 702, and a second spring 703 is inserted in the fixed tube 18. When in use, when the reagent bottle is placed on the placement rack 19, its bottom is against the top of the rubber ring 15, thereby pushing the movable tube 20 to move downward along the fixed tube 18, and making the top of the rubber ring 15 flush with the bottom of the placement rack 19. At the same time, the second spring 703 is compressed, and the movable tube 20 that is not at the bottom of the reagent bottle is in an extended state under the action of the second spring 703, thereby being able to have a good limiting effect on the reagent bottle, avoiding collision and tipping over of the reagent bottle during the experiment, and being more stable and reliable.

[0028] The on-off mechanism 8 includes a fixed cover 801 fixedly inserted into the side wall of the connecting tube 22, and a sealing plate 802 is slidably connected to the fixed cover 801 through a second reset mechanism 9. A through hole 803 is provided on the side wall of the sealing plate 802. When the reagent bottle needs to be taken, the sealing plate 802 is pressed to stagger the through hole 803 and the connecting tube 22, and the connecting tube 22 is blocked and sealed by the sealing plate 802. At this time, the fixed tube 18 and the movable tube 20 stop exhausting air to prevent the rubber ring 15 from adsorbing the bottom of the reagent bottle, thereby facilitating the taking of the reagent bottle.

[0029] The second reset mechanism 9 includes two symmetrically arranged first mounting blocks 901 fixedly connected to the side walls of the sealing plate 802, and the bottom of the first mounting block 901 is fixedly connected to two symmetrically arranged T-shaped guide rods 902, the side walls of the T-shaped guide rods 902 are sleeved with second mounting blocks 903, and the second mounting blocks 903 are fixed to the side walls of the fixed cover 801, and the side walls of the T-shaped guide rods 902 are sleeved with third springs 904, which play a guiding and reset role for the movement of the sealing plate 802.

[0030] The exhaust mechanism 10 includes a fan 1001 fixedly connected to the side wall of the exhaust hood 12, and the air outlet end of the fan 1001 is fixedly connected to the exhaust pipe 1002. When exhausting, the fan 1001 is started to perform the exhaust operation, and the absorbed exhaust gas is uniformly processed through the exhaust pipe 1002.

[0031] Working principle: When in use, when it is necessary to adjust the height of the placement rack 19, the rocker 203 is rotated, and the rotation of the rocker 203 drives the rotation of the threaded rod 202, thereby driving the connection block 206 and the movable cover 17 to rise and fall, and the lifting and lowering of the movable cover 17 drives the placement rack 19 to rise and fall through the fixed pipe 18, so that it is convenient to adjust the height of the placement rack 19 according to the use requirements, which is more applicable and more convenient and quick to use; When exhaust is required, the fan 1001 is started, and at the same time, the electromagnet 602 is energized. After the electromagnet 602 is turned on and off, it attracts the iron block 601, so that the rack 402 slides along the side wall of the guide rod 502. At the same time, the first spring 504 is compressed. When the rack 402 moves, it drives the gear 401 and the shaft 302 to rotate clockwise, and then the cover plate 14 is rotated upward to open, and the first exhaust hole 13 is exposed to perform normal exhaust operation. At the same time, the cover plate 14 can play a windproof role after being rotated upward, so that the exhaust effect is better; When in use, when the reagent bottle is placed on the placement rack 19, its bottom abuts against the top of the rubber ring 15, thereby pushing the movable tube 20 to move downward along the fixed tube 18, and the second exhaust hole 21 moves into the fixed tube 18, and makes the top of the rubber ring 15 flush with the bottom of the placement rack 19. At the same time, the second spring 703 is compressed, and the movable tube 20 that is not at the bottom of the reagent bottle is in an extended state under the action of the second spring 703, so that the reagent bottle can be effectively limited, avoiding collision and tipping over during the experiment, and being more stable and reliable. At the same time, when the exhaust hood 12 is exhausting, the movable hood 17 is evacuated through the hose 16 and the connecting pipe 22, and the second exhaust hole 21 and the rubber ring 15 are evacuated through the fixed pipe 18 and the movable pipe 20. When the rubber ring 15 abuts against the bottom of the reagent bottle, the rubber ring 15 can adsorb the bottom of the reagent bottle under the action of exhaust, so as to avoid collision and tipping of the reagent bottle during the experiment, which is more stable and reliable. The exhaust operation is carried out through the second exhaust hole 21, which is convenient for exhausting the gaps between the reagent bottles, so that the exhaust efficiency is higher and the effect is better. When the reagent bottle needs to be taken, the sealing plate 802 is pressed to stagger the through hole 803 and the connecting tube 22, and the connecting tube 22 is sealed by the sealing plate 802. At this time, the fixed tube 18 and the movable tube 20 stop exhausting air to prevent the rubber ring 15 from adsorbing the bottom of the reagent bottle, thereby facilitating the taking of the reagent bottle; After the exhaust is completed, the electromagnet 602 is powered off. At this time, the cover plate 14 can rotate downward under the action of the first spring 504 and seal the first exhaust hole 13, which can reduce the adhesion of dust and water stains on the surface of the first exhaust hole 13 and ensure its exhaust efficiency and effect.

Claims

1. A laboratory reagent rack with a built-in exhaust system, comprising a laboratory table (1), characterized in that: The top of the experimental table (1) is fixedly connected to a support base (11), and the top of the support base (11) is fixedly connected to an exhaust hood (12), a side wall of the exhaust hood (12) is provided with a plurality of first exhaust holes (13) arranged in an array, and the side wall of the exhaust hood (12) is rotatably connected to a cover plate (14) via a rotating mechanism (3), the top of the experimental table (1) is connected to two hollow movable hoods (17) via a lifting mechanism (2), and the top of the movable hood (17) is fixedly connected to a plurality of fixed tubes (18) arranged in an array, the upper end of the fixed tube (18) is fixedly connected to a placement rack (19), and the inside of the fixed tube (18) is provided with a plurality of first exhaust holes (13) arranged in an array. A movable tube (20) is slidably connected via a telescopic mechanism (7); the upper end of the movable tube (20) penetrates the bottom of the placement frame (19) and is fixedly connected to a rubber ring (15); a plurality of second exhaust holes (21) arranged in an array are provided on the side wall of the movable tube (20); an exhaust mechanism (10) is provided on the side wall of the exhaust hood (12); an L-shaped hose (16) is fixedly connected to the side wall of the exhaust hood (12); a connecting tube (22) is fixedly inserted into the side wall of the movable hood (17); the other end of the connecting tube (22) is fixed to the side wall of the hose (16); and an on-off mechanism (8) is provided on the side wall of the connecting tube (22).

2. A laboratory reagent rack with a self-contained exhaust system according to claim 1, characterized in that: The lifting mechanism (2) comprises a first U-shaped frame (201) and a second U-shaped frame (204) fixedly connected to the top of the experimental table (1), and a threaded rod (202) is rotatably connected between the first U-shaped frame (201) and the experimental table (1), a rocker (203) is fixedly connected to the upper end of the threaded rod (202), and a fixed rod (205) is fixedly connected between the second U-shaped frame (204) and the experimental table (1), and the side walls of each of the movable covers (17) are fixedly connected to two symmetrically arranged connecting blocks (206), one of the connecting blocks (206) is sleeved on the side wall of the fixed rod (205), and the other connecting block (206) is threadedly connected to the side wall of the threaded rod (202).

3. A laboratory reagent rack with a self-contained exhaust system according to claim 1, characterized in that: The rotating mechanism (3) comprises two symmetrically arranged support blocks (301) fixedly connected to the side walls of the exhaust hood (12); the cover plate (14) is rotatably connected to the side walls of the support blocks (301) via a rotating shaft (302); and the side walls of the support blocks (301) are provided with a driving mechanism (4) for driving the rotating shaft (302) to rotate.

4. A laboratory reagent rack with a self-contained exhaust system according to claim 3, characterized in that: The driving mechanism (4) comprises a gear (401) fixedly sleeved on the side wall of the rotating shaft (302), and the side wall of the supporting block (301) is connected to a rack (402) via a first reset mechanism (5), the rack (402) is meshed with the gear (401), and the movement of the rack (402) is driven by a driving mechanism (6).

5. A laboratory reagent rack with a self-contained exhaust system according to claim 4, characterized in that: The first reset mechanism (5) comprises two symmetrically arranged fixed blocks (501) fixedly connected to the side walls of the support block (301), and the side walls of the fixed blocks (501) are fixedly connected to two symmetrically arranged guide rods (502), the side walls of the guide rods (502) are sleeved with sliders (503), the sliders (503) are fixed to the side walls of the rack (402), and the side walls of the guide rods (502) are sleeved with first springs (504).

6. A laboratory reagent rack with a self-contained exhaust system according to claim 4, characterized in that: The pushing mechanism (6) comprises an iron block (601) fixedly connected to the bottom of the rack (402), and an electromagnet (602) is fixedly connected to the bottom of the fixed block (501).

7. A laboratory reagent rack with a self-contained exhaust system according to claim 1, characterized in that: The telescopic mechanism (7) comprises a fixed ring (701) fixedly connected to the inner wall of the fixed tube (18), and a sliding ring (702) is slidably connected inside the fixed tube (18), the lower end of the movable tube (20) is fixed to the top of the sliding ring (702), and a second spring (703) is inserted into the fixed tube (18).

8. The laboratory reagent rack with a self-contained exhaust system according to claim 1, characterized in that: The on-off mechanism (8) comprises a fixed cover (801) fixedly inserted into the side wall of the connecting pipe (22), and a sealing plate (802) is slidably connected in the fixed cover (801) via a second reset mechanism (9), and a through hole (803) is provided in the side wall of the sealing plate (802).

9. A laboratory reagent rack with a self-contained exhaust system according to claim 8, characterized in that: The second reset mechanism (9) comprises two symmetrically arranged first mounting blocks (901) fixedly connected to the side wall of the sealing plate (802), and the bottom of the first mounting block (901) is fixedly connected to two symmetrically arranged T-shaped guide rods (902), the side wall of the T-shaped guide rod (902) is sleeved with a second mounting block (903), and the second mounting block (903) is fixed to the side wall of the fixed cover (801), and the side wall of the T-shaped guide rod (902) is sleeved with a third spring (904).

10. A laboratory reagent rack with a self-contained exhaust system according to claim 1, characterized in that: The exhaust mechanism (10) comprises a fan (1001) fixedly connected to the side wall of the exhaust hood (12), and an exhaust pipe (1002) is fixedly connected to the air outlet end of the fan (1001).

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