A waste cover lifting device for protein digestion experiments

Abstract

The application provides a waste exhaust cover lifting device for protein digestion experiments, and belongs to the technical field of laboratory lifting devices, and comprises a support frame, a clamping structure and a driving mechanism; the bottom of the support frame is provided with a bottom disc which is installed on a laboratory bench; the support frame is provided with a first cantilever near the top; the clamping structure is slidably arranged on the first cantilever; the clamping structure comprises two groups of clamping jaws which can slide in the height direction, and the two groups of clamping jaws can clamp the handrails on the two sides of the waste exhaust cover respectively; the driving mechanism is arranged on the support frame; the driving end of the driving mechanism is connected with the clamping structure; wherein, the support frame is further provided with a lifting structure, and a tray is placed on the top of the lifting structure to receive the waste exhaust cover which is slid into position; through the above arrangement, acid mist in the waste exhaust pipeline can be prevented from splashing on the experimental personnel during the transportation of the waste exhaust cover, and the safety hazard is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of laboratory lifting devices, specifically relating to a waste hood lifting device for protein digestion experiments. Background Technology

[0002] The protein digestion process produces a large amount of acid gas, so an exhaust gas collection device is usually connected during the experiment to reduce the harm of exhaust gas to the human body.

[0003] During the experiment, the protein is digested in the test tube. The waste exhaust hood is equipped with a waste exhaust pipeline, which has a connector tube that connects to each test tube and is sealed to the test tube. The acid gas generated in the test tube enters the waste exhaust pipeline and is eventually discharged into the waste gas treatment equipment.

[0004] After the experiment, the experimenters wore gloves and used their hands to handle and transfer the waste discharge hood. However, acid mist remained in the waste discharge pipeline inside the hood, and the connector on the waste discharge pipeline was set downwards. After lifting the waste discharge hood, the connector separated from the test tube. During the handling process, the acid mist in the waste discharge pipeline was thrown onto the experimenters, posing a safety hazard. Utility Model Content

[0005] This application provides a waste hood lifting device for protein digestion experiments, aiming to solve the safety hazards of existing methods for removing waste hoods.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A waste hood lifting device for protein digestion experiments is provided, comprising:

[0008] A support frame has a base plate at the bottom, and the base plate is mounted on the experimental table; the support frame has a first cantilever near the top.

[0009] A clamping structure is slidably mounted on the first cantilever; the clamping structure includes two sets of grippers that can slide along the height direction, and the two sets of grippers can respectively grip the handrails on both sides of the waste discharge hood;

[0010] A drive mechanism is mounted on a support frame; the drive end of the drive mechanism is connected to the clamping structure.

[0011] The support frame is also equipped with a lifting structure, and a tray is placed on top of the lifting structure to support the waste hood that has slid into place.

[0012] In one possible implementation, the clamping structure further includes:

[0013] The sliding component has a sleeve fitted onto the first cantilever;

[0014] Two sets of electric actuators are respectively installed on both sides of the sliding component on the first cantilever; the electric actuators are located on the top of the sliding component, and the driving end of the electric actuators passes through the sliding component;

[0015] The support component is connected at the top to the drive end of the electric push rod;

[0016] A drive structure is provided on the support component; the drive structure is connected to the gripper to drive the gripper to clamp or loosen the handrail on the waste discharge cover.

[0017] In one possible implementation, each set of grippers includes a left gripper and a right gripper, and the drive structure includes:

[0018] The first connecting rod is connected at both ends to the left jaw in each of the two sets of grippers;

[0019] The second connecting rod is connected at both ends to the right jaw in the two sets of grippers;

[0020] The supporting component has a through groove extending through both sides, and the first connecting rod and the second connecting rod are slidably disposed in the through groove; a gear is rotatably disposed in the through groove, and the first connecting rod and the second connecting rod are respectively provided with connecting teeth that mesh with the gear.

[0021] In one possible implementation, the top of the support member has a protrusion, and the top of the protrusion has a slot; the drive end of the electric push rod is connected to a plug, which engages with the slot.

[0022] The protrusion has a first through hole communicating with the slot on its side, and the insert has a second through hole aligned with the first through hole; the protrusion has a support rod that engages with the first and second through holes.

[0023] In one possible implementation, a mounting plate is fixedly provided on the top of the sliding component, and the side of the electric push rod is connected to the mounting plate.

[0024] In one possible implementation, the drive mechanism includes:

[0025] A lead screw is rotatably mounted on the support frame and is positioned above the first cantilever; the first cantilever has a support seat that rotatably engages with the lead screw; the clamping structure has a connecting component that threadedly engages with the lead screw.

[0026] A speed reducer is connected to the side of the support frame away from the first cantilever; the output shaft of the speed reducer passes through the support frame and is connected to the lead screw via a coupling;

[0027] The drive motor's output shaft is connected to the reducer's input shaft via a coupling.

[0028] A support plate is connected to the support frame; the drive motor is mounted on the support plate.

[0029] In one possible implementation, the support plate is fixed to the support frame by bolts; the housing of the reducer is fixed to the support frame, and the side of the housing of the reducer facing away from the support frame has a sealing plate, which is connected to the housing by bolts.

[0030] In one possible implementation, a diagonal brace is provided between the support frame near the top and the free end of the first cantilever, with both ends of the diagonal brace being fixedly connected to the first cantilever and the support frame, respectively.

[0031] In one possible implementation, a second cantilever is provided on the side of the support frame opposite to the first cantilever, a U-shaped plate is connected to the second cantilever, a counterweight cavity is formed between the U-shaped plate and the second cantilever, and a plurality of counterweight blocks are connected in the counterweight cavity.

[0032] In one possible implementation, each set of grippers has a support surface that supports the bottom of the waste hood handrail.

[0033] This application provides a waste hood lifting device for protein digestion experiments. Compared with the prior art, after the experiment, the clamping structure slides to directly above the waste hood, or it can be slid to directly above the waste hood before the experiment begins. After the experiment ends, the grippers on the clamping mechanism slide downwards to the handrail of the waste hood and then clamp the handrail. By sliding the grippers upwards, the waste hood can be lifted upwards, facilitating lateral movement of the waste hood. The clamping structure is driven to slide on the first cantilever by a drive mechanism, causing the clamping structure to move laterally directly above the tray. Then, the grippers move the waste hood downwards onto the tray, at which point the grippers release the handrail and then slide upwards to reset, placing the waste hood on the tray. Through the above design, acid mist from the waste hood discharge pipeline can be prevented from splashing onto the experimenters during the handling of the waste hood, reducing safety hazards. Attached Figure Description

[0034] Figure 1 A schematic diagram of a waste hood lifting device for a protein digestion experiment provided in this application embodiment;

[0035] Figure 2 for Figure 1 Enlarged diagram of section A in the middle;

[0036] Figure 3 for Figure 1 Enlarged diagram of section B in the middle;

[0037] Figure 4 A side view of a waste hood lifting device for a protein digestion experiment provided in an embodiment of this application;

[0038] Figure 5 A schematic diagram of the support frame portion of a waste hood lifting device for a protein digestion experiment provided in an embodiment of this application;

[0039] Figure 6 for Figure 5 Enlarged diagram of section C;

[0040] Figure 7 A schematic diagram of the sliding component of a waste hood lifting device for a protein digestion experiment provided in an embodiment of this application;

[0041] Figure 8 A schematic diagram of the drive structure of a waste hood lifting device for a protein digestion experiment provided in an embodiment of this application;

[0042] Figure 9 A schematic diagram of the first and second connecting rod portions of a waste hood lifting device for a protein digestion experiment provided in an embodiment of this application;

[0043] Figure 10 A schematic diagram of the insert block portion of a waste hood lifting device for a protein digestion experiment provided in an embodiment of this application;

[0044] Figure 11 A schematic diagram showing the clamping structure of a waste hood lifting device for a protein digestion experiment sliding directly above the waste hood, as provided in an embodiment of this application.

[0045] Figure 12 A schematic diagram of the gripping structure of a waste hood lifting device for a protein digestion experiment provided in this application, showing the grippers clamping the handle downwards;

[0046] Figure 13 A schematic diagram of a waste hood lifting device for a protein digestion experiment, provided in an embodiment of this application, showing the waste hood being lifted upwards;

[0047] Figure 14 A schematic diagram illustrating the movement of a waste hood lifting device for a protein digestion experiment, provided in an embodiment of this application, to directly above a tray;

[0048] Figure 15 A schematic diagram of a waste hood lifting device for a protein digestion experiment, provided as an embodiment of this application, showing the waste hood being placed on a tray;

[0049] Figure 16This is a schematic diagram of the grippers resetting upwards in a waste hood lifting device for a protein digestion experiment, provided as an embodiment of this application.

[0050] Explanation of reference numerals in the attached drawings: 1. Support frame; 11. Chassis; 12. First cantilever; 121. Support base; 13. Support plate; 14. Diagonal brace; 15. Second cantilever; 16. U-shaped plate; 17. Counterweight; 2. Clamping structure; 21. Sliding component; 211. Mounting plate; 212. Connecting component; 22. Electric push rod; 221. Insert block; 222. Supporting rod; 23. Support component; 231. Through groove; 232. Protrusion; 24. Drive structure; 241. First connecting rod; 242. Second connecting rod; 25. Sleeve; 26. Gear; 27. Connecting tooth; 28. Servo motor; 29. ​​Cover plate; 3. Drive mechanism; 31. Lead screw; 32. Reducer; 321. Sealing plate; 33. Drive motor; 34. Support plate; 341. Clearance groove; 4. Gripper; 41. Left gripper; 42. Right gripper; 43. Support surface; 5. Waste discharge hood; 51. Handrail; 6. Pallet; 61. Positioning plate; 7. Rib plate. Detailed Implementation

[0051] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0052] Please refer to the following: Figures 1 to 16 This application describes a waste hood lifting device for protein digestion experiments. The waste hood lifting device includes a support frame 1, a clamping structure 2, and a driving mechanism 3. The support frame 1 has a base 11 at its bottom, which is mounted on an experimental platform. A first cantilever 12 is located near the top of the support frame 1. The clamping structure 2 is slidably mounted on the first cantilever 12. The clamping structure 2 includes two sets of grippers 4 that can slide along the height direction, each set of grippers 4 capable of gripping the handrails 51 on both sides of the waste hood 5. The driving mechanism 3 is mounted on the support frame 1. The driving end of the driving mechanism 3 is connected to the clamping structure 2. The support frame 1 also has a lifting structure, with a tray 6 placed on top of the lifting structure to support the waste hood 5 as it slides into place.

[0053] This application provides a lifting device for a waste discharge hood 5 used in protein digestion experiments. Compared with the prior art, after the experiment, the clamping structure 2 slides to directly above the waste discharge hood 5, or it can be slid to directly above the waste discharge hood 5 before the experiment begins. After the experiment ends, the gripper 4 on the clamping mechanism slides down to the position of the handle 51 of the waste discharge hood 5 and then clamps the handle 51. By sliding the gripper 4 upward, the waste discharge hood 5 can be lifted upward, which facilitates the lateral movement of the waste discharge hood 5. The driving mechanism 3 drives the clamping structure 2 to slide on the first cantilever 12, so that the clamping structure 2 moves laterally to directly above the tray 6. Then, the gripper 4 moves the waste discharge hood 5 downward onto the tray 6. At this time, the gripper 4 releases the handle 51, and then slides upward to reset, which can place the waste discharge hood 5 on the tray 6. With the above settings, acid mist in the waste discharge pipeline can be prevented from splashing onto the experimental personnel during the handling of the waste discharge hood 5, reducing safety hazards. The waste discharge pipes and connectors inside the waste discharge hood 5 are not shown in the figure.

[0054] During protein digestion experiments, the experimental platform is isolated by a transparent glass structure with a sliding glass panel that can slide up and down to facilitate the handling of experimental materials by the experimenters. During the experiment, the sliding glass panel is in a closed position. Therefore, the lifting device in this application is located inside the transparent glass structure. During the lifting and handling of the waste discharge hood 5, the sliding glass panel remains closed, thus preventing acid mist from the waste discharge pipeline from splashing onto the experimenters. After the waste discharge hood 5 is placed on the tray 6, the subsequent operators use the tray 6 to transport the waste discharge hood 5 to the cleaning area. Because the gap between the connector pipe on the waste discharge pipeline and the bottom wall of the tray 6 is small, safety hazards can be reduced.

[0055] The lifting structure includes two support plates 13, which are fixed on both sides of the support frame 1. The top of the support plates 13 supports the tray 6. In order to improve the placement accuracy of the tray 6, two positioning plates 61 are fixedly installed at the bottom of the tray 6. The two positioning plates 61 are located inside the two support plates 13. The positioning plates 61 are correspondingly arranged with the support plates 13 and are in contact with the corresponding support plates 13 to limit the placement position of the tray 6.

[0056] In some embodiments, such as Figures 1 to 16As shown, the clamping structure 2 also includes a sliding component 21, two sets of electric push rods 22, a support component 23, and a drive structure 24; the sliding component 21 has a sleeve 25 sleeved on the first cantilever 12; the two sets of electric push rods 22 are respectively arranged on both sides of the sliding component 21 on the first cantilever 12; the electric push rods 22 are located at the top of the sliding component 21, and the driving end of the electric push rods 22 passes through the sliding component 21; the top of the support component 23 is connected to the driving end of the electric push rods 22; the drive structure 24 is arranged on the support component 23; the drive structure 24 is connected to the gripper 4 to drive the gripper 4 to clamp or loosen the handrail 51 on the waste discharge cover 5; the two electric push rods 22 are driven synchronously.

[0057] The working principle of the electric push rod 22 is existing technology and will not be described in detail here; the sliding component 21 is sleeved on the first cantilever 12 through the sleeve 25. Under the drive of the drive mechanism 3, the sliding component 21 can slide along the first cantilever 12; the sleeve 25 on the sliding component 21 can play a circumferential limiting role to ensure the stability of the sliding component 21 during the sliding process; the cross-section of the sleeve 25 is a square structure.

[0058] When the sliding component 21 slides to the top of the waste discharge hood 5, the driving end of the electric push rod 22 drives the support component 23 to move downward, so that the two sets of grippers 4 are respectively located at the handrails 51 on both sides of the waste discharge hood 5; after the two sets of grippers 4 clamp the handrails 51, the driving end of the electric push rod 22 drives the support component 23 to move upward, thus lifting the waste discharge hood 5 upward.

[0059] After the waste hood 5 is lifted into position, the sliding component 21 is driven by the drive mechanism 3 to slide on the first cantilever 12 to move the waste hood 5 laterally. When the waste hood 5 moves directly above the tray 6, the sliding component 21 stops sliding. At this time, the drive end of the electric push rod 22 drives the support component 23 downward to place the waste hood 5 on the tray 6. Then the gripper 4 releases the handle 51, and under the drive of the electric push rod 22, the gripper 4 and the support component 23 return to their original positions upward, completing the transfer process of the waste hood 5.

[0060] In some embodiments, such as Figures 1 to 16 As shown, each set of grippers 4 includes a left gripper 41 and a right gripper 42. The drive structure 24 includes a first connecting rod 241 and a second connecting rod 242. The two ends of the first connecting rod 241 are respectively connected to the left gripper 41 in the two sets of grippers 4. The two ends of the second connecting rod 242 are respectively connected to the right gripper 42 in the two sets of grippers 4. The support component 23 has a through groove 231 that runs through both sides of it. The first connecting rod 241 and the second connecting rod 242 are slidably disposed in the through groove 231. A gear 26 is rotatably disposed in the through groove 231. The first connecting rod 241 and the second connecting rod 242 are respectively provided with connecting teeth 27 that mesh with the gear 26.

[0061] A servo motor 28 is connected to the top of the support component 23. The output shaft of the servo motor 28 passes through the top of the support component 23 and is connected to the gear 26 in the through slot 231. The output end of the servo motor 28 drives the gear 26 to rotate, which enables the gear 26 to simultaneously drive the first connecting rod 241 and the second connecting rod 242 to move, thereby adjusting the distance between the left claw 41 and the right claw 42 to achieve the gripping or releasing operation.

[0062] The first connecting rod 241 and the second connecting rod 242 are located opposite to the gear 26. Therefore, after the gear 26 rotates, the gear 26 meshes with the connecting teeth 27 on the first connecting rod 241 and the second connecting rod 242, so that the sliding directions of the first connecting rod 241 and the second connecting rod 242 are opposite.

[0063] The top of the support member 23 has an opening that communicates with the through groove 231; a cover plate 29 is provided on the top of the support member 23, and the cover plate 29 is fixed to the support member 23 by bolts; the above arrangement facilitates the installation of the gear 26 on the support member 23.

[0064] The first connecting rod 241, the second connecting rod 242, and the gear 26 have the same thickness. The top of the first connecting rod 241 contacts the cover plate 29, and the bottom of the first connecting rod 241 contacts the bottom wall of the through groove 231. With the above arrangement, the first connecting rod 241, the second connecting rod 242, and the gear 26 can be limited in the height direction without affecting their movement.

[0065] In some embodiments, such as Figures 1 to 16 As shown, the top of the support component 23 has a protrusion 232, and the top of the protrusion 232 has a slot; the drive end of the electric push rod 22 is connected to a plug 221, and the plug 221 is inserted into the slot; wherein, the side of the protrusion 232 has a first through hole communicating with the slot, and the plug 221 has a second through hole aligned with the first through hole; the protrusion 232 has a load-bearing rod 222 that is inserted into the first through hole and the second through hole.

[0066] The number of protrusions 232 is the same as that of the electric push rod 22, that is, there are two protrusions 232. Both the protrusions 232 and the servo motor 28 are connected to the cover plate 29. The top of the protrusion 232 is not lower than the top of the servo motor 28. Therefore, when the sliding member 21 and the supporting member 23 are at their minimum distance, the protrusion 232 contacts the bottom wall of the sliding member 21, which can reduce the situation where the sliding member 21 abuts against the servo motor 28.

[0067] The insert 221 has a prism-shaped structure, and a cuboid structure is used as an example in this application. The shape of the slot corresponds to that of the insert 221, and the outer peripheral wall of the insert 221 contacts the inner peripheral wall of the slot. After the insert 221 is inserted into the slot, the second through hole on the insert 221 is aligned with the first through hole on the protrusion 232. Then, by inserting the support rod 222 into the first through hole and the second through hole, the insert 221 can be limited in the slot.

[0068] One end of the support rod 222 has a chamfer, and the support rod 222 and the protrusion 232 are interference-fitted, thus reducing the possibility of the support rod 222 and the protrusion 232 separating.

[0069] In some embodiments, such as Figures 1 to 16 As shown, a mounting plate 211 is fixedly provided on the top of the sliding component 21, and the side of the electric push rod 22 is connected to the mounting plate 211; the connection between the electric push rod 22 and the mounting plate 211 can be a bolt connection.

[0070] The mounting plate 211 is vertically arranged at the top of the sliding component 21. A rib 7 is connected to the mounting plate 211. The rib 7 has a triangular structure and is welded to the mounting plate 211. Both the mounting plate 211 and the rib 7 are welded to the sliding component 21. Through the above arrangement, the connection strength between the mounting plate 211 and the sliding component 21 can be improved.

[0071] In some embodiments, such as Figures 1 to 16 As shown, the drive mechanism 3 includes a lead screw 31, a reducer 32, a drive motor 33, and a support plate 34. The lead screw 31 is rotatably mounted on the support frame 1 and is located above the first cantilever 12. The first cantilever 12 has a support seat 121 that rotatably engages with the lead screw 31. The clamping structure 2 has a connecting component 212 that is threadedly engaged with the lead screw 31. The reducer 32 is connected to the side of the support frame 1 away from the first cantilever 12. The output shaft of the reducer 32 passes through the support frame 1 and is connected to the lead screw 31 via a coupling. The output shaft of the drive motor 33 is connected to the input shaft of the reducer 32 via a coupling. The support plate 34 is connected to the support frame 1. The drive motor 33 is mounted on the support plate 34.

[0072] The output shaft of the drive motor 33 drives the input shaft of the reducer 32 to rotate, and the output shaft of the reducer 32 drives the lead screw 31 to rotate, thereby causing the connecting component 212 to slide on the first cantilever 12, so as to drive the clamping structure 2 to slide on the first cantilever 12.

[0073] By setting a support plate 34 on the support frame 1, the drive motor 33 can be mounted on the support plate 34, and the support plate 34 can support the drive motor 33.

[0074] In some embodiments, such as Figures 1 to 16 As shown, the support plate 34 is fixed to the support frame 1 by bolts; the housing of the reducer 32 is fixed to the support frame 1, and the side of the housing of the reducer 32 away from the support frame 1 has a sealing plate 321, which is connected to the housing by bolts.

[0075] The support plate 34 has a clearance groove 341 on the side facing the support frame 1 to avoid the housing of the reducer 32. The bottom of the support plate 34 is also provided with a rib 7, which is fixed to the support plate 34. The rib 7 has a bent part with a mounting hole. The support frame 1 has a through hole aligned with the mounting hole. After the sealing plate 321 is installed on the housing of the reducer 32, the support plate 34 is installed on the support frame 1 and fixed with bolts. Then the output shaft of the drive motor 33 is connected to the input shaft of the reducer 32 through a coupling, and the drive motor 33 is fixed on the support plate 34.

[0076] In some embodiments, such as Figures 1 to 16 As shown, a diagonal rod 14 is provided between the support frame 1 near the top and the free end of the first cantilever 12. The two ends of the diagonal rod 14 are fixedly connected to the first cantilever 12 and the support frame 1, respectively.

[0077] By setting a diagonal brace 14 on the support frame 1, and fixing the two ends of the diagonal brace 14 to the support frame 1 and the first cantilever 12 respectively, the first cantilever 12 can be reinforced.

[0078] In some embodiments, such as Figures 1 to 16 As shown, a second cantilever 15 is provided on the side of the support frame 1 opposite to the first cantilever 12. A U-shaped plate 16 is connected to the second cantilever 15, and a counterweight cavity is formed between the U-shaped plate 16 and the second cantilever 15. Several counterweight blocks 17 are connected inside the counterweight cavity.

[0079] By setting a second cantilever 15 on the support frame 1 and setting several counterweights 17 on the second cantilever 15, the stability of the clamping structure 2 during the sliding process can be improved, and the overturning situation can be reduced.

[0080] The base plate 11 at the bottom of the support frame 1 is fixed to the experimental table by bolts and nuts, which can fix the support frame 1; by setting a counterweight 17 on the support frame 1, the overall performance of the lifting device can be increased.

[0081] In some embodiments, such as Figures 1 to 16 As shown, each set of grippers 4 has a support surface 43 that supports the bottom of the waste discharge cover 5 handle 51.

[0082] By providing a support surface 43 at the bottom of the handrail 51, after the gripper 4 clamps the handrail 51, the support surface 43 on the gripper 4 contacts the bottom of the handrail 51. During the upward movement of the gripper 4, the support surface 43 can support the handrail 51.

[0083] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A waste discharge hood lifting device for protein digestion experiments, characterized in that, include: A support frame has a base plate at the bottom, and the base plate is mounted on the experimental table; the support frame has a first cantilever near the top. A clamping structure is slidably mounted on the first cantilever; the clamping structure includes two sets of grippers that can slide along the height direction, and the two sets of grippers can respectively grip the handrails on both sides of the waste discharge hood; A drive mechanism is mounted on a support frame; the drive end of the drive mechanism is connected to the clamping structure. The support frame is also equipped with a lifting structure, and a tray is placed on top of the lifting structure to support the waste hood that has slid into place.

2. The waste discharge hood lifting device for protein digestion experiments as described in claim 1, characterized in that, The clamping structure also includes: The sliding component has a sleeve fitted onto the first cantilever; Two sets of electric actuators are respectively installed on both sides of the sliding component on the first cantilever; the electric actuators are located on the top of the sliding component, and the driving end of the electric actuators passes through the sliding component; The support component is connected at the top to the drive end of the electric push rod; A drive structure is provided on the support component; the drive structure is connected to the gripper to drive the gripper to clamp or loosen the handrail on the waste discharge cover.

3. The waste hood lifting device for protein digestion experiments as described in claim 2, characterized in that, Each set of grippers includes a left gripper and a right gripper, and the drive structure includes: The first connecting rod is connected at both ends to the left jaw in each of the two sets of grippers; The second connecting rod is connected at both ends to the right jaw in the two sets of grippers; The supporting component has a through groove extending through both sides, and the first connecting rod and the second connecting rod are slidably disposed in the through groove; a gear is rotatably disposed in the through groove, and the first connecting rod and the second connecting rod are respectively provided with connecting teeth that mesh with the gear.

4. The waste discharge hood lifting device for protein digestion experiments as described in claim 2, characterized in that, The top of the support component has a protrusion, and the top of the protrusion has a slot; the drive end of the electric push rod is connected to a plug, and the plug engages with the slot. The protrusion has a first through hole communicating with the slot on its side, and the insert has a second through hole aligned with the first through hole; the protrusion has a support rod that engages with the first and second through holes.

5. The waste discharge hood lifting device for protein digestion experiments as described in claim 2, characterized in that, A mounting plate is fixedly provided on the top of the sliding component, and the side of the electric push rod is connected to the mounting plate.

6. The waste hood lifting device for protein digestion experiments as described in claim 1, characterized in that, The drive mechanism includes: A lead screw is rotatably mounted on the support frame and is positioned above the first cantilever; the first cantilever has a support seat that rotatably engages with the lead screw; the clamping structure has a connecting component that threadedly engages with the lead screw. A speed reducer is connected to the side of the support frame away from the first cantilever; the output shaft of the speed reducer passes through the support frame and is connected to the lead screw via a coupling; The drive motor's output shaft is connected to the reducer's input shaft via a coupling. A support plate is connected to the support frame; the drive motor is mounted on the support plate.

7. The waste discharge hood lifting device for protein digestion experiments as described in claim 6, characterized in that, The support plate is fixed to the support frame by bolts; the housing of the reducer is fixed to the support frame, and the side of the housing of the reducer away from the support frame has a sealing plate, which is connected to the housing by bolts.

8. The waste hood lifting device for protein digestion experiments as described in claim 1, characterized in that, A diagonal brace is provided between the support frame near the top and the free end of the first cantilever, with both ends of the diagonal brace being fixedly connected to the first cantilever and the support frame, respectively.

9. The waste discharge hood lifting device for protein digestion experiments as described in claim 1, characterized in that, A second cantilever is provided on the side of the support frame opposite to the first cantilever. A U-shaped plate is connected to the second cantilever, and a counterweight cavity is formed between the U-shaped plate and the second cantilever. Several counterweight blocks are connected in the counterweight cavity.

10. The waste discharge hood lifting device for protein digestion experiments as described in claim 1, characterized in that, Each set of grippers has a support surface that supports the bottom of the waste discharge hood handrail.

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