Safe crushing device for laboratory solid waste

Abstract

The utility model discloses a safe crushing device for laboratory solid waste. The safe crushing device comprises a supporting assembly, the crushing container is erected on the supporting assembly, the crushing container is provided with a crushing cavity with openings in the two ends, a bottom cover plate capable of being opened and closed is arranged at the bottom of the crushing cavity, and a top cover plate capable of being opened and closed is arranged at the top of the crushing cavity; the driving device is mounted on the side wall of the crushing container; the crushing cutter group is arranged in the crushing cavity, is in transmission connection with the driving device and is used for crushing the materials; a gas inlet connector and a gas outlet connector are formed in the side wall of the crushing container, the gas inlet connector is configured to fill inert gas into the crushing cavity, and the gas outlet connector is configured to discharge gas in the crushing cavity; a filter unit is arranged at the exhaust port and is configured to purify gas exhausted from the exhaust port; the device has the advantages that atmosphere replacement and filtering exhaust of a crushing environment can be realized, and spontaneous combustion oxidation and poison gas leakage are prevented.

Description

Technical Field

[0001] This utility model relates to a crushing device, and more particularly to a safe crushing device for laboratory solid waste. Background Technology

[0002] With the rapid development of materials science and new energy technologies, laboratories generate a large amount of complex solid waste in their daily research activities, such as spent lithium-ion battery electrodes, degraded precious metal catalysts, electronic waste containing heavy metals, and various chemically active residues. To conduct subsequent component analysis, leaching toxicity identification, or resource recovery studies on these solid wastes, they must typically undergo crushing and grinding pretreatment to disrupt their physical structure, reduce particle size, and increase specific surface area. The safety and effectiveness of this pretreatment process directly affect the accurate acquisition of experimental data and the biochemical safety of the laboratory environment, making it an indispensable and crucial step in the research workflow.

[0003] Currently, commonly used sample pretreatment equipment in laboratories mainly includes miniature jaw crushers, planetary ball mills, and various high-speed shear pulverizers. These devices largely rely on an electric motor to drive metal blades or grinding media to rotate at high speed, pulverizing materials through mechanical impact, shearing, or friction. In practice, researchers typically place the sample directly into the grinding chamber, seal the chamber with a screw cap or mechanical latch, and then start the equipment for crushing. This type of equipment has a relatively mature structure and low operating threshold, and can meet basic particle size control requirements when processing conventional soil, rock, or non-toxic, harmless, dry, ordinary samples.

[0004] However, when dealing with special solid wastes that are heat-sensitive, flammable, explosive, or highly toxic, the limitations of existing technologies translate into serious safety hazards. The main problem is that conventional crushing equipment generally lacks active atmosphere control and isolation mechanisms. The grinding chamber is usually filled with air. When the high-speed rotating blades violently rub against high-energy solid waste (such as lithium battery materials), generating high heat, it can easily induce thermal runaway, spontaneous combustion, or even explosion of the sample. Furthermore, the oxygen-containing environment can cause oxidation and denaturation of sensitive samples, interfering with subsequent analytical results. In addition, toxic dust and volatile gases generated during the crushing process accumulate in the sealed chamber, creating positive pressure. When the cover is opened at the end of the experiment, the accumulated harmful substances often escape or erupt outwards, directly exposing experimental personnel to a hazardous environment and posing a significant occupational health risk.

[0005] Therefore, it is particularly necessary to develop a laboratory solid waste crushing device that can isolate oxygen and safely release internal pressure. Utility Model Content

[0006] The purpose of this invention is to provide a laboratory solid waste safety crushing device that can achieve atmosphere replacement and filtration exhaust in the crushing environment, preventing spontaneous combustion oxidation and toxic gas leakage.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a laboratory solid waste safety crushing device, comprising,

[0008] Support components;

[0009] A crushing container is mounted on the support assembly. The crushing container has a crushing chamber with openings at both ends, and the bottom of the crushing chamber is provided with an openable bottom cover plate, and the top of the crushing chamber is provided with an openable top cover plate.

[0010] A drive unit, which is mounted on the side wall of the crushing container;

[0011] The crushing blade assembly is disposed inside the crushing chamber and is connected to the drive device for crushing materials;

[0012] The side wall of the crushing container is provided with an air inlet and an air outlet. The air inlet is configured to fill the crushing chamber with inert gas, and the air outlet is configured to discharge the gas in the crushing chamber.

[0013] A filter unit is provided at the exhaust port, and the filter unit is configured to purify the gas discharged from the exhaust port.

[0014] Preferably, the device further includes a first telescopic drive member, one side of the bottom cover plate is hinged to the bottom edge of the crushing container, one end of the first telescopic drive member is hinged to the outer wall of the crushing container, and the other end is hinged to the bottom cover plate. The first telescopic drive member is configured to drive the bottom cover plate to flip over to open or close the bottom opening of the crushing chamber.

[0015] Preferably, the device further includes a second telescopic drive member, one side of the top cover plate is hinged to the top edge of the crushing container, one end of the second telescopic drive member is hinged to the outer wall of the crushing container, and the other end is hinged to the top cover plate. The second telescopic drive member is configured to drive the top cover plate to flip over to open or close the top opening of the crushing chamber.

[0016] Preferably, the filtration unit includes a filter housing connected to the exhaust port and an adsorption filter element disposed within the filter housing. The material of the adsorption filter element is selected from at least one of activated carbon, molecular sieve, photocatalyst, HEPA filter, or chemical adsorption filler.

[0017] Preferably, the air inlet is provided with an air inlet control valve, the air outlet is provided with an air outlet control valve, the air outlet is connected to a negative pressure generating device through a pipeline, and the filter unit is arranged on the pipeline between the air outlet and the negative pressure generating device. The negative pressure generating device is configured to perform vacuum treatment on the crushing chamber when the air inlet control valve is closed and the air outlet control valve is open.

[0018] Preferably, the air intake port is connected to an inert gas source via a pipeline, and the inert gas source is configured to supply inert gas into the crushing chamber when the exhaust control valve is closed and the air intake control valve is open.

[0019] Preferably, the crushing blade assembly includes a first blade shaft and a second blade shaft arranged horizontally side by side in the crushing chamber. The first blade shaft and the second blade shaft are respectively provided with a plurality of crushing moving blades spaced apart along the axial direction. The crushing moving blades on the first blade shaft and the crushing moving blades on the second blade shaft are interleaved and meshed with each other. The power output end of the driving device passes through the side wall of the crushing container and is connected to the first blade shaft and the second blade shaft respectively.

[0020] Preferably, the side wall of the crushing container is provided with a first support and a second support, and the driving device includes a first drive motor and a second drive motor. The first drive motor is mounted on the first support and is drivenly connected to the first cutter shaft, and the second drive motor is mounted on the second support and is drivenly connected to the second cutter shaft.

[0021] Compared with existing technologies, the advantages of this invention are as follows: This device utilizes a side-wall-mounted drive unit combined with a design of bidirectional openable and closable top and bottom covers. This not only avoids the interference of traditional top-drive systems on material feeding, enabling convenient top feeding of materials and residue-free gravity unloading after crushing, but also significantly lowers the equipment's center of gravity to improve stability. The most crucial advantage lies in its controlled atmosphere crushing environment. Inert gas is introduced into the sealed crushing chamber through the side-wall air inlet, effectively replacing the oxygen within the chamber. This physically cuts off the path for spontaneous combustion, explosion, or oxidative degradation of heat-sensitive or flammable solid wastes such as waste lithium batteries and catalysts during high-speed crushing and heat generation. Simultaneously, overpressure gases or volatile harmful substances generated during crushing must pass through a filter unit at the exhaust port for purification, effectively intercepting toxic dust and malodorous gases and preventing their escape into the open laboratory environment. Thus, while achieving solid waste reduction, it constructs a dual safety barrier against fire and explosion risks and toxic gas leakage risks, greatly improving the occupational health protection level of laboratory researchers. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram showing the state of the bottom cover and top cover of this utility model when they are open;

[0025] Figure 3 This is a three-dimensional structural diagram of the crushing blade assembly in this utility model;

[0026] In the diagram, 1. Support assembly; 2. Crushing container; 3. Crushing chamber; 4. Bottom cover plate; 5. Top cover plate; 6. Drive device; 7. Crushing blade assembly; 8. Air inlet; 9. Exhaust port; 10. Filter unit; 11. First telescopic drive component; 12. Second telescopic drive component; 13. Filter housing; 14. Adsorption filter element; 15. Air inlet control valve; 16. Exhaust control valve; 17. Negative pressure generating device; 18. Pipeline; 19. Inert gas source; 20. First cutter shaft; 21. Second cutter shaft; 22. Crushing moving blade; 23. First support; 24. Second support; 25. First drive motor; 26. Second drive motor. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the content of the embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] Example 1: As Figures 1-3 As shown, a laboratory solid waste safety crushing device includes,

[0029] Support component 1;

[0030] The crushing container 2 is mounted on the support assembly 1. The crushing container 2 has a crushing chamber 3 with openings at both ends. The bottom of the crushing chamber 3 is provided with an openable bottom cover plate 4, and the top of the crushing chamber 3 is provided with an openable top cover plate 5.

[0031] Drive unit 6, which is installed on the side wall of crushing container 2;

[0032] The crushing blade assembly 7 is installed inside the crushing chamber 3 and is connected to the drive device 6 for crushing materials.

[0033] The side wall of the crushing container 2 is provided with an air inlet 8 and an exhaust port 9. The air inlet 8 is configured to fill the crushing chamber 3 with inert gas, and the exhaust port 9 is configured to discharge the gas in the crushing chamber 3.

[0034] A filter unit 10 is provided at the exhaust port 9, and the filter unit 10 is configured to purify the gas discharged from the exhaust port 9.

[0035] Example 2: Figures 1-3 As shown, unlike Embodiment 1, it also includes a first telescopic drive member 11. One side of the bottom cover plate 4 is hinged to the bottom edge of the crushing container 2. One end of the first telescopic drive member 11 is hinged to the outer wall of the crushing container 2, and the other end is hinged to the bottom cover plate 4. The first telescopic drive member 11 is configured to drive the bottom cover plate 4 to flip to open or close the bottom opening of the crushing chamber 3.

[0036] This device constructs an automated bottom opening and closing discharge mechanism by setting a first telescopic drive member 11 and cooperating with the hinged installation structure of the bottom cover plate 4. Since one side of the bottom cover plate 4 is hinged to the bottom edge of the crushing container 2, its movement trajectory is limited to rotating around the axis. When the first telescopic drive member 11, which is connected between the outer wall of the container and the cover plate, performs the telescopic action, it can convert the linear driving force into the torque that controls the opening and closing of the cover plate.

[0037] During the unloading stage, the first telescopic drive 11 pushes the cover plate downward to fully open the bottom opening, and uses gravity to automatically and completely discharge the crushed solid waste. This process effectively avoids direct contact between the experimental personnel and toxic and harmful residues, significantly improving operational safety. During the closing stage, the first telescopic drive 11 retracts in the opposite direction and maintains tension, pressing the bottom cover plate 4 tightly against the edge of the discharge port. This mechanical locking action provides a reliable hard seal for the crushing chamber 3, which can withstand the pressure changes generated by subsequent vacuuming or gas replacement operations, preventing dangerous gases from leaking from the bottom gaps.

[0038] In this embodiment, a second telescopic drive member 12 is also included. One side of the top cover plate 5 is hinged to the top edge of the crushing container 2. One end of the second telescopic drive member 12 is hinged to the outer wall of the crushing container 2, and the other end is hinged to the top cover plate 5. The second telescopic drive member 12 is configured to drive the top cover plate 5 to flip to open or close the top opening of the crushing chamber 3.

[0039] This device is further equipped with a second telescopic drive component 12 to achieve automated control of the top feed inlet. Since one side of the top cover plate 5 is hinged to the top edge of the crushing container 2, when the second telescopic drive component 12, which is connected between the crushing container 2 and the top cover plate 5, performs a telescopic action, it can drive the top cover plate 5 to rotate around the axis, thereby automatically and completely opening the top opening during the feeding stage. This not only facilitates the disposal of large-sized solid waste by experimental personnel, but also avoids the physical exertion and potential injury risk of frequently moving heavy sealing covers manually. In addition, during the sealing stage before crushing operations, the second telescopic drive component 12 can provide a continuous and stable downward locking force to tightly press the top cover plate 5 against the container opening. This actively applied mechanical pressure can effectively counteract the pressure fluctuations in the crushing chamber 3 caused by filling with inert gas or evacuating, ensuring the integrity of the top sealing structure. This, together with the sealing design of the side walls and bottom, maintains a strict atmosphere protection environment in the crushing chamber 3, preventing external oxygen from seeping in or internal toxic gases from escaping.

[0040] In this embodiment, the first telescopic drive member 11 and the second telescopic drive member 12 are preferably electric push rods. These electric push rods integrate a motor, a reduction mechanism, and a lead screw transmission assembly, and have a power-off self-locking function. They maintain a stable thrust after extending to the correct position, thereby ensuring that the top cover plate 5 and the bottom cover plate 4 are always tightly pressed against the container opening during the crushing operation, maintaining the airtightness of the crushing chamber 3. In other embodiments, hydraulic cylinders or pneumatic cylinders can also be used depending on the required locking force.

[0041] In this embodiment, the filter unit 10 includes a filter housing 13 connected to the exhaust port 9 and an adsorption filter element 14 disposed in the filter housing 13. The material of the adsorption filter element 14 is selected from at least one of activated carbon, molecular sieve, photocatalyst, HEPA filter or chemical adsorption filler.

[0042] This device constructs an end-point purification barrier for exhaust gases by installing a filter housing 13 containing an adsorption filter element 14 at the exhaust port 9. Since the filter housing 13 is directly connected to the exhaust port 9, all airflow from the crushing chamber 3 is forcibly guided through the internal adsorption filter element 14. At this time, the physical interception media such as the HEPA filter selected in the filter element can efficiently capture the micron-sized toxic dust generated during the crushing process, preventing it from spreading with the airflow. At the same time, it can also work with the pore adsorption characteristics and chemical reaction capabilities of activated carbon, molecular sieves, or chemical adsorption fillers to deeply adsorb and solidify volatile organic compounds and malodorous gases released from the crushing of waste lithium batteries or hazardous chemicals, thereby ensuring that the gas finally discharged into the laboratory environment or vacuum pump meets the harmless standard, effectively eliminating the safety hazards of aerosol transmission and toxic gas leakage.

[0043] In this embodiment, an intake control valve 15 is provided at the intake port 8, and an exhaust control valve 16 is provided at the exhaust port 9. The exhaust port 9 is connected to a negative pressure generating device 17 through a pipeline 18, and a filter unit 10 is provided on the pipeline 18 between the exhaust port 9 and the negative pressure generating device 17. The negative pressure generating device 17 is configured to perform vacuum treatment on the crushing chamber 3 when the intake control valve 15 is closed and the exhaust control valve 16 is open.

[0044] This device constructs an adjustable vacuum replacement gas path system by setting control valves at the inlet and outlet ports 9 and cooperating with a negative pressure generating device 17 connected to the outlet side. The negative pressure generating device 17 is a vacuum pump. Since the filter unit 10 is arranged on the pipeline 18 between the outlet port 9 and the negative pressure generating device 17, when the system performs gas replacement operation, the inlet control valve 15 is closed and the outlet control valve 16 is opened to start the negative pressure generating device 17. The air or residual toxic gas in the crushing chamber 3 will be forcibly extracted under the action of pressure difference.

[0045] During this process, the pre-filter unit 10 preferentially intercepts solid particles and corrosive media in the airflow. This not only effectively prevents pollutants from directly entering the negative pressure generating device 17 and causing damage to the pump body, but also significantly extends the maintenance cycle and service life of the power equipment. In addition, this active vacuum treatment can rapidly reduce the oxygen content in the cavity to an extremely low level. Compared with passive positive pressure purging, the negative pressure replacement method eliminates dead zones in the airflow, ensuring that the inert gas subsequently introduced can completely occupy the crushing space, providing a highly pure inert protective environment for the crushing of hazardous solid waste.

[0046] In this embodiment, the air intake port 8 is connected to an inert gas source 19 via a pipe 18. The inert gas source 19 is configured to supply inert gas into the crushing chamber 3 when the exhaust control valve 16 is closed and the air intake control valve 15 is open.

[0047] When the exhaust control valve 16 closes, causing the crushing chamber 3 to form a closed cavity, the system opens the intake control valve 15, and nitrogen or argon from the inert gas source 19 quickly fills the cavity through the pipeline 18. Especially in the case of a negative pressure state after vacuuming, the inert gas instantly occupies all the free space within the crushing chamber 3, fundamentally changing the gas composition within the crushing environment. The oxygen that might have supported combustion is completely replaced by the inactive inert medium. Even if electrical sparks or localized high heat are generated during the high-speed crushing of waste lithium batteries or flammable chemicals, the lack of necessary oxidizer prevents combustion or explosion reactions from being triggered, thus ensuring the inherent safety of the equipment when handling extremely hazardous solid waste.

[0048] Example 3: Figures 1-3As shown, unlike Embodiment 2, the crushing blade assembly 7 includes a first blade shaft 20 and a second blade shaft 21 arranged horizontally side by side in the crushing chamber 3. The first blade shaft 20 and the second blade shaft 21 are respectively provided with a plurality of crushing moving blades 22 spaced apart along the axial direction. The crushing moving blades 22 on the first blade shaft 20 and the crushing moving blades 22 on the second blade shaft 21 are interleaved and meshed with each other. The power output end of the drive device 6 passes through the side wall of the crushing container 2 and is connected to the first blade shaft 20 and the second blade shaft 21 respectively.

[0049] This device constructs a dual-shaft shearing and crushing structure by horizontally arranging the first cutter shaft 20 and the second cutter shaft 21 within the crushing chamber 3, along with the staggered meshing structure of the moving blades. Because the crushing blades 22 on the two cutter shafts interlock during rotation, when solid waste falls between the two shafts, the material is not crushed by a single impact force, but rather subjected to enormous shearing, tearing, and compressive forces generated by the relatively rotating blades. This complex force pattern effectively overcomes the hardness of the metal casing of waste lithium batteries and the toughness of plastic separators or wires, significantly reducing the risk of material entanglement or jamming that easily occurs when traditional single-shaft crushers process mixed soft and hard solid waste. Simultaneously, the direct drive layout of the drive unit 6 through the side walls ensures that the dual shafts can obtain continuous and stable high torque output, thereby guaranteeing efficient, continuous, and thorough crushing treatment of various complex laboratory solid wastes.

[0050] In this embodiment, the side wall of the crushing container 2 is provided with a first support 23 and a second support 24. The driving device 6 includes a first drive motor 25 and a second drive motor 26. The first drive motor 25 is mounted on the first support 23 and is connected to the first cutter shaft 20 in a driving connection. The second drive motor 26 is mounted on the second support 24 and is connected to the second cutter shaft 21 in a driving connection.

[0051] Because each drive motor is securely mounted on the side wall via its own bracket and directly outputs power to a single cutter shaft, this design eliminates the need for complex intermediate transmission distribution mechanisms and removes power losses caused by mechanical backlash. In actual crushing operations, the two electric drive motors can independently provide torque according to the load. When encountering extremely difficult-to-crush hard solid waste, the double power source ensures that the cutter shaft will not stop due to insufficient torque. The side wall mounting method moves the heavy drive units to the sides of the container, which not only effectively lowers the overall center of gravity to reduce vibration but also completely avoids the operating areas at the top and bottom of the container, ensuring that the opening and closing of the top feed cover and the bottom discharge cover are not subject to any mechanical interference, resulting in more stable operation.

[0052] The entire process begins with the material preparation stage. The operator first activates the second telescopic drive component 12 connected to the top cover plate 5, causing it to rotate and open the top cover plate 5 around its axis. High-risk solid waste such as waste lithium batteries or chemical reagent bottles is then fed into the crushing chamber 3. Subsequently, the drive component reverses its movement to press and lock the cover plate tightly, forming an initial sealed space. Next, the core atmosphere replacement stage begins. The system first closes the inlet control valve 15 and opens the exhaust control valve 16. The negative pressure generating device 17 is activated to forcefully evacuate the chamber through the side wall exhaust port 9. During this process, the original air and potential volatile gases in the chamber are forced to be purified by the filter unit 10 and then discharged. Once the chamber reaches the predetermined negative pressure value, the system closes the exhaust side and opens the inlet control valve 15. The inert gas source 19 then injects nitrogen or argon into the chamber from the bottom through the extension pipe, quickly filling the vacuum space and establishing an inert protective environment to inhibit combustion. After ensuring a safe environment, the two independent drive motors on the side wall start simultaneously, driving the two internal cutter shafts to rotate inwards in opposite directions. The interlocking moving blades powerfully shear and shred the solid waste. After the crushing operation is completed, the system stops the motors and opens the first telescopic drive component 11 at the bottom, driving the bottom cover plate 4 to flip downwards and open. The crushed material is automatically discharged under gravity. The entire process does not require direct manual contact with the material, realizing a safe closed-loop operation from feeding, replacement, crushing to unloading.

[0053] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A laboratory solid waste safe crushing device, characterized in that: The utility model relates to a kind of inert gas crushing device, including, Support assembly; Crushing container, which is erected on the support assembly, the crushing container has a two-end opening crushing cavity, and the bottom of the crushing cavity is provided with a openable bottom cover plate, and the top of the crushing cavity is provided with an openable top cover plate; Driving device, which is installed on the side wall of the crushing container; Crushing cutter group, which is arranged in the crushing cavity and is in transmission connection with the driving device, for crushing materials; The side wall of the crushing container is provided with an air inlet interface and an air outlet interface, the air inlet interface is configured to fill inert gas into the crushing cavity, and the air outlet interface is configured to discharge gas in the crushing cavity; The air outlet interface is provided with a filter unit, and the filter unit is configured to purify the gas discharged from the air outlet interface.

2. The laboratory solid waste safe crushing device according to claim 1, characterized in that: It also includes a first telescopic drive, one side of the bottom cover plate is hinged to the bottom edge of the crushing container, one end of the first telescopic drive is hinged to the outer wall of the crushing container, the other end is hinged to the bottom cover plate, and the first telescopic drive is configured to drive the bottom cover plate to flip to open or close the bottom opening of the crushing cavity.

3. The laboratory solid waste safe crushing device according to claim 1, characterized in that: It also includes a second telescopic drive, one side of the top cover plate is hinged to the top edge of the crushing container, one end of the second telescopic drive is hinged to the outer wall of the crushing container, the other end is hinged to the top cover plate, and the second telescopic drive is configured to drive the top cover plate to flip to open or close the top opening of the crushing cavity.

4. The laboratory solid waste safe crushing device of claim 1, wherein: The filter unit includes a filter housing connected to the air outlet interface and an adsorption filter core arranged in the filter housing, and the material of the adsorption filter core is selected from at least one of activated carbon, molecular sieve, photocatalyst, HEPA filter screen or chemical adsorption filler.

5. The laboratory solid waste safe crushing device of claim 1, wherein: The air inlet interface is provided with an air inlet control valve, the air outlet interface is provided with an air outlet control valve, the air outlet interface is connected with a negative pressure generating device through a pipeline, and the filter unit is arranged on the pipeline between the air outlet interface and the negative pressure generating device, and the negative pressure generating device is configured to perform vacuumizing treatment on the crushing cavity when the air inlet control valve is closed and the air outlet control valve is opened.

6. A laboratory solid waste safe crushing device as claimed in claim 5, wherein: The air inlet interface is connected with an inert gas source through a pipeline, and the inert gas source is configured to deliver inert gas into the crushing cavity when the air outlet control valve is closed and the air inlet control valve is opened.

7. The laboratory solid waste safe crushing device of claim 1, wherein: The crushing cutter group includes a first cutter shaft and a second cutter shaft arranged horizontally and side by side in the crushing cavity, a plurality of crushing moving knives are arranged on the first cutter shaft and the second cutter shaft respectively along the axial direction, the crushing moving knives on the first cutter shaft and the crushing moving knives on the second cutter shaft are interlaced with each other, and the power output end of the driving device penetrates through the side wall of the crushing container and is in transmission connection with the first cutter shaft and the second cutter shaft respectively.

8. The laboratory solid waste safe crushing device of claim 7, wherein: The side wall of the crushing container is provided with a first support and a second support, the driving device includes a first driving motor and a second driving motor, the first driving motor is installed on the first support and is in transmission connection with the first cutter shaft, and the second driving motor is installed on the second support and is in transmission connection with the second cutter shaft.

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