Biological experiment protection device for biological teaching

Abstract

The invention relates to the technical field of biological experiment equipment, in particular to a biological experiment protection device for biological teaching, which comprises a base, a workbench is fixedly mounted on the base, a mounting assembly is fixedly mounted on the base, and the mounting assembly is used for mounting to-be-disinfected equipment; according to the alcohol lamp placing device, the placing plate and the special-shaped clamping piece are arranged, bearing of an alcohol lamp is relieved through contraction movement of an electric push rod, the special-shaped clamping piece can continuously apply clamping force to an alcohol lamp bottle body under the action of a first spring, and therefore the alcohol lamp can be prevented from moving along with the placing plate; and after the electric push rod pushes the placing plate to return to the original position, a shielding area is formed above the alcohol lamp which burns in a spraying mode, so that the alcohol lamp which burns in the spraying mode can be intercepted, and the alcohol lamp is effectively prevented from damaging other objects around the alcohol lamp when splashing.

Description

Technical Field

[0001] The invention relates to the technical field of biological experiment equipment, in particular to a biological experiment protection device for biological teaching. Background Art

[0002] The alcohol lamp is one of the commonly used experimental equipment in biology teaching. It is mainly used for heating, disinfecting or igniting other items. Since it does not produce smoke during the combustion process, it can also achieve the purpose of sterilization by burning the instruments. The heat generated during the combustion of the alcohol lamp can also heat other experimental materials.

[0003] Alcohol lamps are commonly used disinfection tools on the workbench of biological laboratories, but there is a high risk of fire during their use. First, alcohol lamps are prone to wick splashing when in use, especially when the wick is too short or incompletely burned. There are usually a large number of flammable experimental equipment and reagents on the workbench, and splashing alcohol or flames can easily cause fires. Secondly, too much or too little alcohol in the alcohol lamp can be dangerous. When there is too much alcohol, the alcohol vapor may expand and overflow rapidly after ignition, and even cause combustion and explosion; when there is too little alcohol, a mixture of alcohol vapor and air may accumulate in the lamp, which may also cause explosion when ignited. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a biological experiment protection device for biological teaching.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a biological experiment protection device for biological teaching, comprising a base, a workbench is fixedly installed on the base, a mounting assembly is fixedly installed on the base, the mounting assembly is used to install equipment to be disinfected, a plurality of push rods are fixedly installed on the base, and the ends of all the push rods are commonly fixedly connected to a baffle box, a shielding placement assembly and a clamping assembly are arranged inside the baffle box, the shielding placement assembly is used to provide a support point for the alcohol lamp, the clamping assembly is used to limit the alcohol lamp, and a receiving assembly is arranged at the bottom of the baffle box, and when the shielding placement assembly releases the support for the alcohol lamp, the clamping assembly will be linked to release the limit on the alcohol lamp, so that the alcohol lamp falls into the interior of the receiving assembly when it sprays and burns.

[0006] Preferably, the shielding placement assembly includes an electric push rod, a fixed portion of which is fixedly mounted on the outer wall of the baffle box, a telescopic end of the electric push rod passes through the baffle box and is fixedly connected to a placement plate, and the placement plate is slidably connected to the inside of the baffle box.

[0007] Preferably, the clamping assembly includes a pushing column and a sliding rod, the pushing column is fixedly connected to the placing plate, the sliding rod is slidably connected to the side wall of the baffle box, the end of the sliding rod is fixedly connected to a special-shaped clamping piece, a first spring is fixedly connected between the special-shaped clamping piece and the baffle box, the first spring is sleeved on the outer wall of the sliding rod, and a hanging column is fixedly connected to the side wall of the special-shaped clamping piece.

[0008] Preferably, the receiving assembly includes an L-shaped frame and a receiving box, the L-shaped frame is fixedly connected to the outer wall of the sliding rod, a baffle is fixedly connected to the side wall of the receiving box, the receiving box is located below the baffle box, a telescopic rod is fixedly connected to the bottom of the baffle box, the telescopic rod is fixedly connected to the baffle, and the L-shaped frame cooperates with the baffle.

[0009] Preferably, a storage groove is provided on the base, a deceleration assembly is provided inside the receiving box, a circular plate is provided above the deceleration assembly, a side of the circular plate away from the deceleration assembly is fixedly connected with a through rod, one end of the through rod passes through the receiving box and is fixedly connected with a receiving seat, the receiving seat is fixedly connected to the inner wall of the receiving box, a receiving groove is provided on the top of the receiving seat, and a protective pad is fixedly connected to the inside of the receiving groove.

[0010] Preferably, the deceleration assembly comprises an elastic telescopic rod, the telescopic end of the elastic telescopic rod is fixedly connected to a deceleration disk, and the circular plate is located on the deceleration disk.

[0011] Preferably, a dry powder bag is fixedly mounted on the bottom of the placement plate, and a trigger switch is fixedly mounted on the deceleration disk.

[0012] Preferably, a support rod is fixedly connected to the inside of the storage groove, and the end of the support rod is fixedly connected to a round box after passing through the circular plate. The round box is slidably connected to the through rod, and the bottom of the round box is fixedly connected to a fan. A slide groove is provided at the bottom of the receiving box, and the round box is located at the bottom of the slide groove. The top of the round box is fixedly connected to a plurality of suction pipes, and the receiving seat and the protective pad are provided with through holes equal to the number of suction pipes.

[0013] Preferably, a sliding rod is fixedly connected to the protection pad, and a baffle is fixedly connected to one end of the sliding rod away from the protection pad. The baffle is located directly above the through hole, and a suction groove is provided on the outer wall of the suction pipe.

[0014] Preferably, a cutter is slidably connected to the receiving box, a slot is provided on the cutter, a connecting plate is fixedly connected to the cutter, a second spring is fixedly connected between the connecting plate and the receiving box, a shield is fixedly connected to the baffle box, and the shield cooperates with the connecting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, through the arrangement of the placement plate and the special-shaped clamping piece, drives the alcohol lamp to be released through the contraction movement of the electric push rod, and in the process of the placement plates moving away from each other, the special-shaped clamping piece will continue to apply a clamping force to the alcohol lamp bottle under the action of the first spring, thereby facilitating the alcohol lamp to move with the placement plate, and after the alcohol lamp falls into the interior of the receiving box and continues to move downward with the alcohol lamp, the electric push rod is controlled to start working again, and the placement plate is quickly pushed back to its original position by the electric push rod. After the two placement plates return to their original positions, a shielding area will be formed above the burning alcohol lamp. At this time, the returned placement plate can intercept the burning alcohol lamp, thereby effectively preventing the alcohol lamp from causing damage to other items around it when splashing.

[0016] Second, the present invention provides a dry powder bag. After the alcohol lamp enters the receiving box, a trigger switch will cause the dry powder bag to be automatically scattered. The trigger switch can use a pressure sensor to cause the dry powder bag to be scattered when the pressure reaches a specified range. The burning alcohol lamp can be extinguished by scattering the dry powder bag.

[0017] 3. The present invention constructs a negative pressure space by setting up a suction pipe to suck air at the bottom of the receiving seat, so that the dry powder after being scattered can flow through the through hole, and the dry powder can be evenly distributed by utilizing the flow through the hole, which is helpful to prevent the occurrence of dead corners in the treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the protective device of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the present invention along the section of the baffle box.

[0020] Figure 3 It is a schematic structural diagram of the connection between the retaining box and the receiving box of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the present invention along the cross section of the base and the baffle box.

[0022] Figure 5 For the present invention Figure 4 A in the figure is an enlarged structural diagram.

[0023] Figure 6 It is a structural schematic diagram of the base of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the connection between the retaining box and the receiving box of the present invention.

[0025] Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in FIG.

[0026] Fig. 9 It is a schematic structural diagram of the present invention along the cross section of the retaining box and the receiving box.

[0027] In the figure: 1. base; 2. workbench; 3. push rod; 4. baffle box; 5. electric push rod; 6. placement plate; 7. push column; 8. slide rod; 9. special-shaped clamping piece; 10. first spring; 11. hanging column; 12. L-shaped frame; 13. receiving box; 14. baffle plate; 15. telescopic rod; 16. storage slot; 17. round plate; 18. through rod; 19. receiving seat; 20. receiving slot; 21. protective pad; 22. elastic telescopic rod; 23. deceleration plate; 24. dry powder bag; 25. installation assembly; 26. support rod; 27. round box; 28. fan; 29. ​​slide groove; 30. suction pipe; 31. through hole; 32. slide rod; 33. baffle plate; 34. suction slot; 35. cutter; 36. notch; 37. connecting plate; 38. second spring; 39. cover plate. DETAILED DESCRIPTION

[0028] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0029] Application scenarios: Alcohol lamps are commonly used disinfection tools on the workbench of biological laboratories, but there is a high risk of fire during their use. First, alcohol lamps are prone to wick splashing when in use, especially when the wick is too short or incompletely burned. There are usually a large number of flammable experimental equipment and reagents on the workbench, and splashing alcohol or flames can easily cause fires. Secondly, too much or too little alcohol in the alcohol lamp can be dangerous. When there is too much alcohol, the alcohol vapor may expand and overflow rapidly after ignition, and even cause combustion and explosion; when there is too little alcohol, a mixture of alcohol vapor and air may accumulate in the lamp, which may also cause explosion when ignited.

[0030] like Figures 1 to 9A biological experiment protection device for biological teaching shown in the figure includes a base 1, a workbench 2 is fixedly installed on the base 1, a mounting assembly 25 is fixedly installed on the base 1, the mounting assembly 25 is used to install equipment to be disinfected, a plurality of top rods 3 are fixedly installed on the base 1, the ends of all the top rods 3 are commonly fixedly connected to a baffle box 4, a shielding placement assembly and a clamping assembly are arranged inside the baffle box 4, the shielding placement assembly is used to provide a support point for the alcohol lamp, the clamping assembly is used to limit the alcohol lamp, and a receiving assembly is arranged at the bottom of the baffle box 4, when the shielding placement assembly releases the support for the alcohol lamp, the clamping assembly will be linked to release the limit on the alcohol lamp, so that the alcohol lamp falls into the interior of the receiving assembly when it sprays and burns.

[0031] As a further implementation scheme of the present invention, the shielding placement assembly includes an electric push rod 5, the fixed part of the electric push rod 5 is fixedly installed on the outer wall of the baffle box 4, the telescopic end of the electric push rod 5 passes through the baffle box 4 and is fixedly connected to a placement plate 6, and the placement plate 6 is slidably connected to the inside of the baffle box 4.

[0032] As a further embodiment of the present invention, the clamping assembly includes a pushing column 7 and a sliding rod 8. The pushing column 7 is fixedly connected to the placing plate 6, and the sliding rod 8 is slidably connected to the side wall of the baffle box 4. The end of the sliding rod 8 is fixedly connected to a special-shaped clamping piece 9. A first spring 10 is fixedly connected between the special-shaped clamping piece 9 and the baffle box 4. The first spring 10 is sleeved on the outer wall of the sliding rod 8, and a hanging column 11 is fixedly connected to the side wall of the special-shaped clamping piece 9.

[0033] As a further implementation scheme of the present invention, the receiving assembly includes an L-shaped frame 12 and a receiving box 13. The L-shaped frame 12 is fixedly connected to the outer wall of the sliding rod 8. The receiving box 13 is located below the baffle box 4. A baffle 14 is fixedly connected to the side wall of the receiving box 13. A telescopic rod 15 is fixedly connected to the bottom of the baffle box 4. The telescopic rod 15 is fixedly connected to the baffle 14, and the L-shaped frame 12 cooperates with the baffle 14.

[0034] Embodiment 1: It should be understood that the target part that needs to be heated or sterilized is placed on the mounting assembly 25 and adjusted to a suitable position. Then, the alcohol lamp is placed on the two shielding placement plates 6 inside the baffle box 4. After the placement is completed, the alcohol lamp is clamped by applying a clamping force to the alcohol lamp through two special-shaped clamping members 9 to maintain the stability of the alcohol lamp. After the alcohol lamp is clamped, the target part is heated by igniting the alcohol lamp wick; if the alcohol lamp ignites during the heating process, the electric push rod 5 is first controlled to start working, and the alcohol lamp is released through the contraction movement of the electric push rod 5, and in the process of the placement plates 6 moving away from each other, the special-shaped clamping member 9 will continue to apply a clamping force to the alcohol lamp bottle under the action of the first spring 10, so as to prevent the alcohol lamp from moving with the placement plate 6. In the process of the placement plate 6 moving, the push column 7 will be synchronously driven to move, and the push column 7 will contact the hanging column 11 during the movement, and will push the hanging column 11 to move, and the hanging column 11 will drive the special-shaped clamping member 9 to move, and the special-shaped clamping member 9 will release the clamping of the alcohol lamp bottle. After the clamping is released, the alcohol lamp will fall into the interior of the receiving box 13; Furthermore, in the process of the special-shaped clamping parts 9 moving away from each other, the sliding rod 8 will be driven to move, and the movement of the sliding rod 8 will drive the L-shaped frame 12 to move, and the L-shaped frame 12 will gradually separate from the baffle 14. At this time, the baffle 14 that has lost its support moves downward under the action of gravity, and at the same time, the separation time of the L-shaped frame 12 and the baffle 14 is extended to ensure that the alcohol lamp has fallen into the receiving box 13 before the L-shaped frame 12 and the baffle 14 are completely separated. After the alcohol lamp falls into the receiving box 13, the receiving box 13 loses its limit and continues to move downward under the action of gravity, and finally causes the alcohol lamp to move in the direction away from the placement plate 6; Furthermore, after the alcohol lamp falls into the receiving box 13 and continues to move downward with the alcohol lamp, the electric push rod 5 is controlled to start working again, and the placement plate 6 is quickly pushed back to its original position by the electric push rod 5. After the two placement plates 6 return to their original positions, a shielding area will be formed above the burning alcohol lamp. At this time, the returned placement plate 6 can intercept the burning alcohol lamp, thereby effectively preventing the alcohol lamp from causing damage to other objects around it when splashing.

[0035] The mounting assembly 25 includes two adjustable rods, a connecting rod is provided between the two adjustable rods, two movable seats are slidably connected to the connecting rod, an adjustment plate is fixedly connected between the two sliding seats, and two adjustable clamps are symmetrically fixedly connected to the bottom of the adjustment plate for clamping the sterilized equipment. The above is the prior art and will not be disclosed in detail here.

[0036] As a further implementation scheme of the present invention, a storage groove 16 is provided on the base 1, a mitigation component is arranged inside the receiving box 13, a circular plate 17 is provided above the mitigation component, a through rod 18 is fixedly connected to the side of the circular plate 17 away from the mitigation component, one end of the through rod 18 passes through the receiving box 13 and is fixedly connected to a receiving seat 19, the receiving seat 19 is fixedly connected to the inner wall of the receiving box 13, a receiving groove 20 is provided on the top of the receiving seat 19, and a protective pad 21 is fixedly connected to the inside of the receiving groove 20.

[0037] As a further embodiment of the present invention, the deceleration assembly includes an elastic telescopic rod 22 , a telescopic end of the elastic telescopic rod 22 is fixedly connected to a deceleration disk 23 , and the circular plate 17 is located on the deceleration disk 23 .

[0038] Embodiment 2: After the receiving box 13 is released from the limit, it falls under the action of gravity, because at this time the alcohol lamp has fallen into the interior of the receiving box 13, and the receiving box 13 will move synchronously with the protection pad 21. On the one hand, in order to prevent the alcohol lamp itself from being damaged due to collision and further increasing the risk of fire, a protection pad 21 is provided inside the receiving box 13 for protection, so that the alcohol lamp falls on the protection pad 21. The protection pad 21 is made of soft material to protect the alcohol lamp and reduce the impact of impact. After the alcohol lamp falls on the protection pad 21, the protection pad 21 will apply a downward pressure to the through rod 18, and the through rod 18 will apply a downward pressure to the receiving seat 19, and the receiving seat 19 will apply a downward pressure to the deceleration plate 23, thereby absorbing part of the force under the action of the elastic telescopic rod 22, which is beneficial to protect the alcohol lamp and prevent the alcohol lamp from being damaged by a large impact force. On the second hand, during the process of applying pressure to the deceleration plate 23, the relative position between the receiving box 13 and the alcohol lamp remains stable. Therefore, this design can help to avoid the situation where the liquid in the burning alcohol lamp breaks through the receiving box 13 and splashes to other parts due to relative displacement between the two.

[0039] As a further embodiment of the present invention, a dry powder bag 24 is fixedly installed on the bottom of the placement plate 6, and a trigger switch is fixedly installed on the deceleration plate 23.

[0040] Embodiment three: after the alcohol lamp enters the receiving box 13, the trigger switch will cause the dry powder bag 24 to be automatically scattered. The trigger switch can use a pressure sensor to cause the dry powder bag 24 to be scattered when the pressure reaches a specified range. By scattering the dry powder bag 24, the burning alcohol lamp can be extinguished.

[0041] As a further implementation scheme of the present invention, the interior of the storage groove 16 is fixedly connected to a support rod 26, the end of the support rod 26 passes through the circular plate 17 and is fixedly connected to a round box 27, the round box 27 is slidably connected to the through rod 18, the bottom of the round box 27 is fixedly connected to a fan 28, a slide groove 29 is provided at the bottom of the receiving box 13, the round box 27 is located at the bottom of the slide groove 29, the top of the round box 27 is fixedly connected to a plurality of suction pipes 30, and the receiving seat 19 and the protective pad 21 are provided with through holes 31 equal to the number of the suction pipes 30.

[0042] As a further implementation scheme of the present invention, a sliding rod 32 is fixedly connected to the protective pad 21, and a baffle 33 is fixedly connected to one end of the sliding rod 32 away from the protective pad 21. The baffle 33 is located directly above the through hole 31, and a suction groove 34 is opened on the outer wall of the suction pipe 30.

[0043] Embodiment 4: After the dry powder is scattered, in order to allow the dry powder to fully act on the inside of the receiving box 13 and process the splashed alcohol, the fan 28 is controlled to start while the dry powder is scattered. The fan 28 sucks air at the bottom of the receiving seat 19 through the suction pipe 30, thereby constructing a negative pressure space, so that the scattered dry powder can flow through the through hole 31, so that the dry powder can be evenly distributed by using the flow through the through hole 31, which is conducive to preventing the occurrence of treatment dead corners; Combined with the second embodiment, as the receiving seat 19 moves downward, a relative displacement will occur between the round box 27 and the slide groove 29 on the receiving box 13, so that the suction pipe 30 is inserted into the interior of the through hole 31 and contacts the baffle 33, so that the baffle 33 will block the end of the suction pipe 30, so that the suction will be concentrated on the suction groove 34. By setting the suction direction of the suction groove 34 to be uneven, the flow of gas will not be regular, which is beneficial for the dry powder to be evenly dispersed to different parts, and then it is beneficial to deal with the splashed liquid.

[0044] As a further implementation scheme of the present invention, a cutter 35 is slidably connected to the receiving box 13, a slot 36 is opened on the cutter 35, a connecting plate 37 is fixedly connected to the cutter 35, a second spring 38 is fixedly connected between the connecting plate 37 and the receiving box 13, and a shielding plate 39 is fixedly connected to the baffle box 4, and the shielding plate 39 cooperates with the connecting plate 37.

[0045] Embodiment 5: When the receiving box 13 moves downward under the action of gravity, a relative displacement will occur between the shielding piece 39 and the connecting plate 37, and the shielding piece 39 will release the restriction on the connecting plate 37. The connecting plate 37 will push the cutter 35 to move under the action of the second spring 38. The two cutters 35 will cut off the wick of the alcohol lamp in the process of approaching each other, which is conducive to extinguishing the combustion source, and a notch 36 is provided on the cutter 35, which will not affect the dispersion of the dry powder.

[0046] Working principle of the present invention: Place the target part that needs to be heated or disinfected on the mounting assembly 25 and adjust it to a suitable position. Then, place the alcohol lamp on the two shielding placement plates 6 inside the baffle box 4. After the placement is completed, apply a clamping force to the alcohol lamp through two special-shaped clamping members 9 to clamp it to maintain the stability of the alcohol lamp. After the alcohol lamp is clamped, the target part is heated by igniting the alcohol lamp wick; if the alcohol lamp ignites during the heating process, the electric push rod 5 is first controlled to start working, and the alcohol lamp is released through the contraction movement of the electric push rod 5, and in the process of the placement plates 6 moving away from each other, the special-shaped clamping member 9 will continue to apply a clamping force to the alcohol lamp bottle under the action of the first spring 10, so as to prevent the alcohol lamp from moving with the placement plate 6. In the process of the placement plate 6 moving, the push column 7 will be synchronously driven to move, and the push column 7 will contact the hanging column 11 during the movement, and will push the hanging column 11 to move, and the hanging column 11 will drive the special-shaped clamping member 9 to move, and the special-shaped clamping member 9 will release the clamping of the alcohol lamp bottle. After the clamping is released, the alcohol lamp will fall into the interior of the receiving box 13; Furthermore, in the process of the special-shaped clamping parts 9 moving away from each other, the sliding rod 8 will be driven to move, and the movement of the sliding rod 8 will drive the L-shaped frame 12 to move, and the L-shaped frame 12 will gradually separate from the baffle 14. At this time, the baffle 14 that has lost its support moves downward under the action of gravity, and at the same time, the separation time of the L-shaped frame 12 and the baffle 14 is extended to ensure that the alcohol lamp has fallen into the receiving box 13 before the L-shaped frame 12 and the baffle 14 are completely separated. After the alcohol lamp falls into the receiving box 13, the receiving box 13 loses its limit and continues to move downward under the action of gravity, and finally causes the alcohol lamp to move in the direction away from the placement plate 6; Furthermore, after the alcohol lamp falls into the receiving box 13 and continues to move downward with the alcohol lamp, the electric push rod 5 is controlled to start working again, and the placement plate 6 is quickly pushed back to its original position by the electric push rod 5. After the two placement plates 6 return to their original positions, a shielding area will be formed above the burning alcohol lamp. At this time, the returned placement plate 6 can intercept the burning alcohol lamp, thereby effectively preventing the alcohol lamp from causing damage to other objects around it when splashing.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A biological experiment protection device for biological teaching, comprising a base (1), a workbench (2) fixedly mounted on the base (1), a mounting assembly (25) fixedly mounted on the base (1), the mounting assembly (25) being used to mount equipment to be sterilized, characterized in that: A plurality of push rods (3) are fixedly mounted on the base (1), and the ends of all the push rods (3) are fixedly connected to a baffle box (4). A shielding placement component and a clamping component are arranged inside the baffle box (4). The shielding placement component is used to provide a support point for the alcohol lamp, and the clamping component is used to limit the position of the alcohol lamp. A receiving component is arranged at the bottom of the baffle box (4). When the shielding placement component releases the support for the alcohol lamp, the clamping component is linked to release the limit on the alcohol lamp, so that the alcohol lamp falls into the interior of the receiving component when it is sprayed.

2. A biological experiment protection device for biological teaching according to claim 1, characterized in that: The shielding placement assembly comprises an electric push rod (5), a fixed portion of the electric push rod (5) is fixedly mounted on the outer wall of the shielding box (4), a telescopic end of the electric push rod (5) passes through the shielding box (4) and is fixedly connected to a placement plate (6), and the placement plate (6) is slidably connected to the interior of the shielding box (4).

3. A biological experiment protection device for biological teaching according to claim 2, characterized in that: The clamping assembly comprises a pushing column (7) and a sliding rod (8), wherein the pushing column (7) is fixedly connected to the placing plate (6), and the sliding rod (8) is slidably connected to the side wall of the baffle box (4). The end of the sliding rod (8) is fixedly connected to a special-shaped clamping piece (9), and a first spring (10) is fixedly connected between the special-shaped clamping piece (9) and the baffle box (4). The first spring (10) is sleeved on the outer wall of the sliding rod (8), and a hanging column (11) is fixedly connected to the side wall of the special-shaped clamping piece (9).

4. A biological experiment protection device for biological teaching according to claim 3, characterized in that: The receiving assembly comprises an L-shaped frame (12) and a receiving box (13); the L-shaped frame (12) is fixedly connected to the outer wall of the sliding rod (8); the receiving box (13) is located below the baffle box (4); a baffle plate (14) is fixedly connected to the side wall of the receiving box (13); a telescopic rod (15) is fixedly connected to the bottom of the baffle box (4); the telescopic rod (15) is fixedly connected to the baffle plate (14); and the L-shaped frame (12) cooperates with the baffle plate (14).

5. A biological experiment protection device for biological teaching according to claim 4, characterized in that: The base (1) is provided with a storage groove (16), a mitigation component is arranged inside the receiving box (13), a circular plate (17) is arranged above the mitigation component, a through rod (18) is fixedly connected to the side of the circular plate (17) away from the mitigation component, one end of the through rod (18) passes through the receiving box (13) and is fixedly connected to a receiving seat (19), the receiving seat (19) is fixedly connected to the inner wall of the receiving box (13), a receiving groove (20) is provided on the top of the receiving seat (19), and a protective pad (21) is fixedly connected to the inside of the receiving groove (20).

6. A biological experiment protection device for biological teaching according to claim 5, characterized in that: The deceleration assembly comprises an elastic telescopic rod (22), the telescopic end of the elastic telescopic rod (22) being fixedly connected to a deceleration disk (23), and the circular plate (17) is located on the deceleration disk (23).

7. A biological experiment protection device for biological teaching according to claim 6, characterized in that: A dry powder bag (24) is fixedly mounted on the bottom of the placement plate (6), and a trigger switch is fixedly mounted on the deceleration disk (23).

8. A biological experiment protection device for biological teaching according to claim 7, characterized in that: The interior of the storage groove (16) is fixedly connected to a support rod (26); the end of the support rod (26) passes through the circular plate (17) and is fixedly connected to a round box (27); the round box (27) is slidably connected to the through rod (18); the bottom of the round box (27) is fixedly connected to a fan (28); a slide groove (29) is provided at the bottom of the receiving box (13); the round box (27) is located at the bottom of the slide groove (29); the top of the round box (27) is fixedly connected to a plurality of suction pipes (30); and the receiving seat (19) and the protective pad (21) are provided with through holes (31) equal in number to the suction pipes (30).

9. A biological experiment protection device for biological teaching according to claim 8, characterized in that: The protection pad (21) is fixedly connected to a sliding rod (32), one end of the sliding rod (32) away from the protection pad (21) is fixedly connected to a blocking piece (33), the blocking piece (33) is located directly above the through hole (31), and an air suction groove (34) is provided on the outer wall of the air suction pipe (30).

10. A biological experiment protection device for biological teaching according to claim 4, characterized in that: A cutter (35) is slidably connected to the receiving box (13), a notch (36) is formed on the cutter (35), a connecting plate (37) is fixedly connected to the cutter (35), a second spring (38) is fixedly connected between the connecting plate (37) and the receiving box (13), and a shielding plate (39) is fixedly connected to the blocking box (4), the shielding plate (39) cooperates with the connecting plate (37).

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