Waste collecting device

Abstract

The utility model provides a waste collecting device which comprises a working table, a sealing plate and a driving mechanism, a waste opening is formed in the working table, the driving mechanism can drive the sealing plate to selectively seal the waste opening, the waste collecting device further comprises an extraction pipe, one end of the extraction pipe is communicated with the bottom end of the waste opening, and the other end of the extraction pipe is communicated with the sealing plate. And an air inlet penetrating in the thickness direction of the side wall is formed in the side wall of one end, close to the waste port, of the extraction pipe. According to the utility model, the bottom end of the waste material opening in the working table is connected with the extraction pipe, an operator can throw solid waste materials generated in the experiment process into the waste material opening at the first time, and the driving mechanism can drive the sealing plate to open or seal the waste material opening, so that the extraction pipe is communicated with the space above the working table only when the waste materials need to be treated; waste in the extraction pipe can be removed in a pneumatic mode, experimental waste discarded by operators is automatically collected, contact between the laboratory operators and the waste is reduced, and safety and health of the operators are guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of waste recycling equipment, specifically to a waste collection device. Background Technology

[0002] Solid waste generated in laboratories is usually corrosive and hazardous. Traditional treatment methods mainly rely on laboratory operators to manually collect, pack, and transfer the waste. This forces laboratory operators to frequently come into close contact with hazardous waste, which not only has an adverse effect on their health but also poses significant safety hazards during the process.

[0003] Therefore, how to provide a waste collection device that can automatically collect waste has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a waste collection device that can automatically collect waste generated on the workbench, reducing contact between operators and waste.

[0005] To achieve the above objectives, this utility model provides a waste collection device, including a workbench, a sealing plate, and a driving mechanism. The workbench has a waste inlet, and the driving mechanism can drive the sealing plate to selectively close the waste inlet. The waste collection device also includes an extraction tube, one end of which is connected to the bottom end of the waste inlet, and the side wall of the extraction tube near the waste inlet has an air inlet hole that extends along the thickness direction of the side wall.

[0006] Optionally, the waste collection device further includes a filter assembly, which includes a filter nozzle and a filter material. The air outlet of the filter nozzle is connected to the air inlet, and the filter material is filled between the air inlet and the air outlet of the filter nozzle.

[0007] Optionally, the filter material is activated carbon.

[0008] Optionally, the extraction tube includes a top tube and a bottom tube, and the filter assembly further includes a positioning sleeve. The inner wall of the positioning sleeve has an annular positioning platform extending around the axis of the positioning sleeve, and the side wall of the positioning sleeve has a connecting hole. The top end of the top tube communicates with the bottom end of the waste port, the bottom end of the top tube is inserted into one end of the positioning sleeve and abuts against the annular positioning platform, and the top end of the bottom tube is inserted into the other end of the positioning sleeve and abuts against the annular positioning platform. One of the top tube and the bottom tube forms the air inlet, and the air outlet of the filter nozzle communicates with the air inlet through the connecting hole.

[0009] Optionally, the filter assembly further includes a fastener and an inclined positioning member. The inclined positioning member includes a fastening sleeve and an inclined cylinder connected to each other. The fastening sleeve and the inclined cylinder have a preset included angle. The inner wall of the communicating hole has an internal thread. The fastener passes through the fastening sleeve and is screwed into the communicating hole to fix the inclined positioning member on the positioning sleeve.

[0010] The filter nozzle includes a connector and a flared portion connected sequentially along the axial direction of the filter nozzle. The end of the flared portion opposite to the connector is formed as the air inlet of the filter nozzle, and the end of the connector is formed as the air outlet of the filter nozzle. The end of the connector is fixedly disposed in the inclined cylinder.

[0011] Optionally, an internal thread is formed on the inner wall of the inclined cylinder, and an external thread is formed on the outer surface of the joint portion, with the end of the joint portion screwed into the inclined cylinder.

[0012] Optionally, the waste collection device further includes a guide box disposed at the bottom of the workbench. The guide box has a guide cavity, and the sealing plate is movably disposed in the guide cavity. The top of the guide box has a top opening communicating with the guide cavity, and the top opening is communicating with the bottom end of the waste inlet. The bottom of the guide box has a bottom opening communicating with the guide cavity, and the bottom opening is communicating with the extraction pipe. The driving mechanism can drive the sealing plate to move in the guide cavity and selectively separate the top opening from the bottom opening.

[0013] Optionally, the guide box includes a top shell and a bottom shell, at least one of the bottom of the top shell and the top of the bottom shell having a guide groove, and at least one of the guide grooves forming the guide cavity.

[0014] Optionally, the bottom of the guide box is further provided with a movable clearance opening communicating with the guide cavity. The driving mechanism includes a rotary drive unit, a gear and a rack. The rack is disposed in the movable clearance opening and is fixedly connected to the bottom of the sealing plate. The gear meshes with the rack. The rotary drive unit can drive the gear to rotate around its own axis, so as to drive the rack to move the sealing plate.

[0015] Optionally, the rotary drive unit is a rotary motor.

[0016] Optionally, the waste collection device further includes a drive housing, which is fixedly connected to the bottom of the guide box, and the rotary drive unit and the gear are both disposed inside the drive housing.

[0017] Optionally, the waste collection device further includes a connector, which is fixedly connected to the guide box. The connector has a connector hole, and the top end of the connector hole communicates with the bottom opening. The top end of the extraction tube is inserted into the bottom end of the connector hole.

[0018] Optionally, a first sealing ring is provided between the connector and the guide box, the first sealing ring sealing the gap between the top end of the connector hole and the bottom opening.

[0019] Optionally, the waste collection device further includes at least one area sensor, which is fixedly mounted on the workbench and located on one side of the waste inlet.

[0020] Optionally, the workbench includes a table plate and an opening seat. The table plate has an installation opening that extends through the table plate along its thickness direction. The opening seat is disposed in the installation opening and has the waste outlet. The area sensor is disposed on the opening seat.

[0021] Optionally, a second sealing ring is provided between the opening seat and the guide box, and the second sealing ring seals the gap between the bottom end of the waste port and the top opening.

[0022] Optionally, a control circuit board is provided in the opening seat, and the area sensor is electrically connected to the control circuit board.

[0023] Optionally, the drive mechanism can drive the sealing plate away from the waste outlet in response to the sensing signal of the area sensor.

[0024] Optionally, the waste collection device further includes an optical detection sensor, which is fixed to the outside of the extraction tube. The extraction tube has a detection through hole on its side wall, and the position of the light outlet of the optical detection sensor corresponds to the position of the detection through hole.

[0025] Optionally, the detection through hole is formed on the side wall of the bottom tube.

[0026] Optionally, the optical detection sensor is an infrared through-beam sensor arranged in pairs on both sides of the extraction tube, and the detection through holes are arranged in pairs on the opposite side walls of the bottom tube.

[0027] Optionally, the optical detection sensor is fixedly mounted on the positioning sleeve, and at least one detection clearance hole is formed on the side wall of the positioning sleeve, the position of the detection clearance hole corresponding to the position of the detection through hole.

[0028] Optionally, the waste collection device further includes a pneumatic power module connected to the end of the extraction tube away from the waste inlet, and the pneumatic power module is capable of extracting gas from the extraction tube.

[0029] In the waste collection device provided by this utility model, the workbench is used for operators to place experimental supplies and conduct experimental operations on the workbench. The bottom end of the waste inlet on the workbench is connected to the extraction tube, so that the operator can throw the solid waste generated during the experiment into the waste inlet as soon as possible. The driving mechanism can drive the sealing plate to open or close the waste inlet, so that the extraction tube is connected to the space above the workbench only when waste needs to be disposed of. During the rest of the experimental operation, the sealing plate prevents the waste in the extraction tube from splashing out or escaping to the top of the workbench in the form of steam, thereby reducing the impact of waste on the operator, ensuring the safety and health of laboratory operators, and ensuring the safety of experimental operations.

[0030] Furthermore, the extraction tube has an air inlet on the side wall near the waste outlet. By drawing air from the other end of the extraction tube, an airflow is generated in the extraction tube, flowing from the air inlet to the other end of the extraction tube. This pneumatically removes the waste from the extraction tube, automatically collecting experimental waste discarded by the operator, further reducing contact between laboratory operators and waste, and ensuring the safety and health of the operators. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] Figure 1 This is an external schematic diagram of the waste collection device provided in this embodiment of the utility model;

[0033] Figure 2 This is a cross-sectional schematic diagram of the waste collection device provided in this embodiment of the utility model;

[0034] Figure 3 This is a cross-sectional schematic diagram of the waste collection device provided in the embodiment of this utility model in the open state;

[0035] Figure 4 This is a cross-sectional schematic diagram of the waste collection device provided in the embodiment of this utility model in the closed state.

[0036] Explanation of reference numerals in the attached figures:

[0037] Workbench 100; Tabletop 110; Opening seat 120; Area sensor 121; Sealing plate 210; Drive mechanism 220; Rotary drive unit 221; Gear 222; Rack 223; Guide box 230; Top shell 231; Bottom shell 232; Drive housing 240; Connector 250; Extraction pipe 300; Top pipe 310; Bottom pipe 320; Filter nozzle 410; Filter material 420; Positioning sleeve 430; Fastener 440; Angled positioning component 450; Optical detection sensor 460; Waste port a; Air inlet b. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0039] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0040] To solve the above-mentioned technical problems, this utility model provides a waste collection device, such as... Figures 1 to 4 As shown, the waste collection device includes a workbench 100, a sealing plate 210, and a drive mechanism 220. The workbench 100 has a waste port a, and the drive mechanism 220 can drive the sealing plate 210 to selectively close the waste port a. The waste collection device also includes an extraction pipe 300, one end of which is connected to the bottom end of the waste port a, and the side wall of the extraction pipe 300 near the waste port a has an air inlet b that extends along the thickness direction of the side wall.

[0041] In the waste collection device provided by this utility model, the workbench 100 is used for operators to place experimental supplies and perform experimental operations on the workbench. The bottom end of the waste inlet a on the workbench 100 is connected to the extraction pipe 300, so that the operator can throw the solid waste generated during the experiment into the waste inlet a immediately. The drive mechanism 220 can drive the sealing plate 210 to open or seal the waste inlet a, so that the extraction pipe 300 is connected to the space above the workbench 100 only when waste needs to be processed (e.g., Figure 4 As shown), during the remaining experimental operations, the sealing plate 210 prevents waste material in the extraction tube 300 from splashing out or escaping to the surface above the work surface in the form of steam (e.g., as shown). Figure 2 , Figure 3(As shown), this reduces the impact of waste on operators, ensures the safety and health of laboratory operators, and guarantees the safety of experimental operations.

[0042] Furthermore, the extraction tube 300 has an air inlet b on the side wall near the waste outlet a. By drawing air from the other end of the extraction tube 300, an airflow is generated in the extraction tube 300, flowing from the air inlet b to the other end of the extraction tube 300. This pneumatically removes the waste from the extraction tube 300, automatically collecting experimental waste discarded by the operator, further reducing contact between laboratory operators and waste, and ensuring the safety and health of the operators.

[0043] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, the waste collection device also includes a filter assembly, which includes a filter nozzle 410 and a filter material 420. The air outlet of the filter nozzle 410 is connected to the air inlet b. The air inlet and outlet of the filter nozzle 410 are filled with filter material 420. The filter assembly can ensure smooth air intake through the air inlet b while preventing gas in the extraction pipe 300 from escaping through the air inlet b, thereby further ensuring the safety and health of the operators.

[0044] Optionally, the filter material 420 is activated carbon.

[0045] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, the extraction pipe 300 includes a top pipe 310 and a bottom pipe 320. The filter assembly also includes a positioning sleeve 430. The inner wall of the positioning sleeve 430 has an annular positioning platform extending around the axis of the positioning sleeve 430. The side wall of the positioning sleeve 430 has a connecting hole. The top end of the top pipe 310 is connected to the bottom end of the waste port a. The bottom end of the top pipe 310 is inserted into one end of the positioning sleeve 430 and abuts against the annular positioning platform. The top end of the bottom pipe 320 is inserted into the other end of the positioning sleeve 430 and abuts against the annular positioning platform. One of the top pipe 310 and the bottom pipe 320 forms an air inlet port b. The air outlet end of the filter nozzle 410 is connected to the air inlet port b through the connecting hole. That is, the extraction pipe 300 adopts a multi-section pipe splicing and achieves precise positioning with the pipe end face through the step inside the positioning sleeve 430, thereby ensuring the alignment accuracy of the filter nozzle 410 and the air inlet port b.

[0046] Optionally, such as Figures 2 to 4 As shown, an air inlet hole b is formed on the top tube 310.

[0047] To facilitate the replacement of the filter nozzle 410, as an optional embodiment of this utility model, the filter nozzle 410 can be fixed to the positioning sleeve 430 by a threaded fastening method. Specifically, as shown... Figures 1 to 4As shown, the filter assembly also includes a fastener 440 and an inclined positioning member 450. The inclined positioning member 450 includes a fastening sleeve and an inclined cylinder connected to each other. There is a preset included angle between the fastening sleeve and the inclined cylinder. The inner wall of the connecting hole has an internal thread. The fastener 440 passes through the fastening sleeve and is screwed into the connecting hole to fix the inclined positioning member 450 on the positioning sleeve 430.

[0048] The filter nozzle 410 includes a connector and a flared part connected sequentially along the axial direction of the filter nozzle 410. The end of the flared part opposite to the connector is formed as the air inlet end of the filter nozzle 410, and the end of the connector opposite to the flared part is formed as the air outlet end of the filter nozzle 410. The end of the connector is fixedly disposed in the inclined cylinder.

[0049] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, an internal thread is formed on the inner wall of the inclined cylinder, and an external thread is formed on the outer surface of the joint. The end of the joint is screwed into the inclined cylinder.

[0050] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, the waste collection device also includes a guide box 230, which is located at the bottom of the workbench 100. The guide box 230 has a guide cavity, and the sealing plate 210 is movably disposed in the guide cavity. The top of the guide box 230 has a top opening that communicates with the guide cavity and is connected to the bottom end of the waste port a. The bottom of the guide box 230 has a bottom opening that communicates with the guide cavity and is connected to the extraction pipe 300. The drive mechanism 220 can drive the sealing plate 210 to move in the guide cavity and selectively separate the top opening and the bottom opening.

[0051] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, the guide box 230 includes a top shell 231 and a bottom shell 232. At least one of the bottom of the top shell 231 and the top of the bottom shell 232 is formed with a guide groove, and at least one guide groove is formed as a guide cavity.

[0052] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, the bottom of the guide box 230 also has a movable clearance opening that communicates with the guide cavity. The drive mechanism 220 includes a rotary drive unit 221, a gear 222 and a rack 223. The rack 223 is disposed in the movable clearance opening and is fixedly connected to the bottom of the sealing plate 210. The gear 222 meshes with the rack 223. The rotary drive unit 221 can drive the gear 222 to rotate around its own axis, so as to drive the rack 223 to move the sealing plate 210.

[0053] Optionally, such as Figures 2 to 4 As shown, the rotary drive unit 221 is a rotary motor.

[0054] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, the waste collection device also includes a drive housing 240, which is fixedly connected to the bottom of the guide box 230. The rotary drive unit 221 and the gear 222 are both disposed inside the drive housing 240.

[0055] In other embodiments of this utility model, the drive mechanism 220 may also adopt other forms of linear motion pairs, such as threaded screw structure, linear motor structure, cylinder, hydraulic cylinder, electric cylinder, etc.

[0056] Alternatively, the sealing plate 210 can swing in the guide cavity, and close or leave the bottom end of the waste port a through the rotational swing action. Accordingly, the drive mechanism 220 can adopt a motor pulley structure, a motor reducer structure, etc.

[0057] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, the waste collection device also includes a connector 250, which is fixedly connected to the guide box 230. A connector hole is formed in the connector 250, and the top end of the connector hole is connected to the bottom opening. The top end of the extraction tube 300 is inserted into the bottom end of the connector hole.

[0058] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, a first sealing ring is provided between the connector 250 and the guide box 230, and the first sealing ring seals the gap between the top and bottom openings of the connector hole.

[0059] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, the waste collection device also includes at least one area sensor 121. The area sensor 121 is fixedly installed on the workbench 100 and located on one side of the waste inlet a. When the area sensor 121 detects waste to be discarded above it, it generates a corresponding sensing signal so that the control device can automatically control the drive mechanism 220 to drive the sealing plate 210 to open.

[0060] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, the workbench 100 includes a table plate 110 and an opening seat 120. The table plate 110 has a mounting opening that extends through the table plate 110 along the thickness direction. The opening seat 120 is disposed in the mounting opening and has a waste outlet a. The area sensor 121 is disposed on the opening seat 120.

[0061] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, a second sealing ring is provided between the opening seat 120 and the guide box 230, and the second sealing ring seals the gap between the bottom end of the waste port a and the top opening.

[0062] As an optional embodiment of this utility model, the opening seat 120 is also provided with a control circuit board, and the area sensor 121 is electrically connected to the control circuit board.

[0063] As an optional embodiment of this utility model, the drive mechanism 220 is electrically connected to the control circuit board. The drive mechanism 220 can respond to the sensing signal generated by the area sensor 121 and drive the sealing plate 210 away from the waste port a.

[0064] Optionally, the area sensor 121 is an infrared detection sensor.

[0065] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, the waste collection device also includes an optical detection sensor 460, which is fixed to the outside of the extraction tube 300. The extraction tube 300 has a detection through hole on its side wall. The position of the light outlet of the optical detection sensor 460 corresponds to the position of the detection through hole. The optical detection sensor 460 can detect whether there is waste at the corresponding position of the extraction tube 300, so that when the waste accumulates too much in the extraction tube 300, the control device can automatically control the corresponding pneumatic power module to extract the waste.

[0066] Optionally, the detection through hole is formed on the side wall of the bottom tube 320.

[0067] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, the optical detection sensor 460 is an infrared photoelectric sensor that is set in pairs on both sides of the extraction tube 300, and the detection through holes are set in pairs on the opposite side walls of the bottom tube 320.

[0068] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, the optical detection sensor 460 is fixedly mounted on the positioning sleeve 430. At least one detection clearance hole is also formed on the side wall of the positioning sleeve 430, and the position of the detection clearance hole corresponds to the position of the detection through hole.

[0069] As an optional embodiment of this utility model, the waste collection device also includes a pneumatic power module (not shown in the figure), which is connected to the end of the extraction pipe 300 away from the waste port a, and the pneumatic power module can extract the gas in the extraction pipe 300.

[0070] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A waste collection device, comprising a worktable (100), a sealing plate (210), and a drive mechanism (220), wherein the worktable (100) has a waste inlet (a), and the drive mechanism (220) is capable of driving the sealing plate (210) to selectively close the waste inlet (a), characterized in that, The waste collection device further includes an extraction pipe (300), one end of which is connected to the bottom end of the waste port (a), and the extraction pipe (300) has an air inlet (b) on the side wall near the waste port (a) that extends along the thickness direction of the side wall.

2. The waste collection device according to claim 1, characterized in that, The waste collection device further includes a filter assembly, which includes a filter nozzle (410) and a filter material (420). The air outlet of the filter nozzle (410) is connected to the air inlet (b), and the filter material (420) is filled between the air inlet and the air outlet of the filter nozzle (410).

3. The waste collection device according to claim 2, characterized in that, The extraction tube (300) includes a top tube (310) and a bottom tube (320). The filter assembly also includes a positioning sleeve (430). The inner wall of the positioning sleeve (430) has an annular positioning platform extending around the axis of the positioning sleeve (430). The side wall of the positioning sleeve (430) has a connecting hole. The top end of the top tube (310) is connected to the bottom end of the waste port (a). The bottom end of the top tube (310) is inserted into one end of the positioning sleeve (430) and abuts against the annular positioning platform. The top end of the bottom tube (320) is inserted into the other end of the positioning sleeve (430) and abuts against the annular positioning platform. One of the top tube (310) and the bottom tube (320) forms the air inlet (b). The air outlet end of the filter (410) is connected to the air inlet (b) through the connecting hole.

4. The waste collection device according to claim 3, characterized in that, The filter assembly further includes a fastener (440) and an inclined positioning member (450). The inclined positioning member (450) includes a fastening sleeve and an inclined cylinder connected to each other. The fastening sleeve and the inclined cylinder have a preset included angle. The inner wall of the connecting hole has an internal thread. The fastener (440) passes through the fastening sleeve and is screwed into the connecting hole to fix the inclined positioning member (450) on the positioning sleeve (430). The filter (410) includes a connector and a flared part connected sequentially along the axial direction of the filter (410). The end of the flared part opposite to the connector is formed as the air inlet of the filter (410), and the end of the connector opposite to the flared part is formed as the air outlet of the filter (410). The end of the connector is fixedly disposed in the inclined cylinder.

5. The waste collection device according to any one of claims 1 to 4, characterized in that, The waste collection device further includes a guide box (230), which is disposed at the bottom of the workbench (100). The guide box (230) has a guide cavity, and the sealing plate (210) is movably disposed in the guide cavity. The top of the guide box (230) has a top opening that communicates with the guide cavity, and the top opening communicates with the bottom end of the waste port (a). The bottom of the guide box (230) has a bottom opening that communicates with the guide cavity, and the bottom opening communicates with the extraction tube (300). The driving mechanism (220) can drive the sealing plate (210) to move in the guide cavity and selectively separate the top opening from the bottom opening.

6. The waste collection device according to claim 5, characterized in that, The guide box (230) includes a top shell (231) and a bottom shell (232), at least one of the bottom of the top shell (231) and the top of the bottom shell (232) having a guide groove, and at least one of the guide grooves being formed as the guide cavity.

7. The waste collection device according to claim 5, characterized in that, The bottom of the guide box (230) also forms a movable clearance opening that communicates with the guide cavity. The drive mechanism (220) includes a rotary drive unit (221), a gear (222), and a rack (223). The rack (223) is disposed in the movable clearance opening and is fixedly connected to the bottom of the sealing plate (210). The gear (222) meshes with the rack (223). The rotary drive unit (221) can drive the gear (222) to rotate around its own axis, so as to drive the rack (223) to move the sealing plate (210).

8. The waste collection device according to any one of claims 1 to 4, characterized in that, The waste collection device also includes at least one area sensor (121), which is fixedly mounted on the workbench (100) and located on one side of the waste inlet (a).

9. The waste collection device according to any one of claims 1 to 4, characterized in that, The waste collection device also includes an optical detection sensor (460), which is fixed to the outside of the extraction tube (300). The extraction tube (300) has a detection through hole on its side wall, and the position of the light outlet of the optical detection sensor (460) corresponds to the position of the detection through hole.

10. The waste collection device according to any one of claims 1 to 4, characterized in that, The waste collection device also includes a pneumatic power module connected to the end of the extraction tube (300) away from the waste port (a), and the pneumatic power module is capable of extracting gas from the extraction tube (300).

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