A garbage collection device with negative pressure suction and compression and its control method

Abstract

The present invention discloses a garbage collection device with negative pressure suction and compression and its control method. Among them, the garbage collection device with negative pressure suction and compression includes a frame assembly, a bag-tying module, a large-opening door module, a positive pressure module, and a negative pressure module. During the medical waste collection process, the negative pressure module can be used to maintain a negative pressure environment inside the garbage bag to prevent gas from overflowing when throwing garbage. At the end of the collection, the negative pressure module is used to extract the gas inside the garbage bag, and at the same time, the positive pressure module is used to inflate the trash can, so that the gas squeezes the outside of the garbage bag, discharging the air inside the garbage bag, realizing the compression of the medical waste inside the garbage bag, and forming a constricting effect at the bag-tying part of the medical garbage bag. Moreover, the bag-tying module clamps the constricted part of the compressed garbage bag to block the air circulation inside the medical garbage bag, avoiding the risk of gas overflow caused by the swelling inside the garbage bag when tying the knot, and facilitating the subsequent tying and packing of the garbage bag.

Description

Technical Field

[0001] The present invention relates to the technical field of trash cans, and in particular to a garbage collection device with negative pressure suction and compression and its control method. Background Art

[0002] During the manual classification and treatment of medical waste, it is extremely easy to cause direct harm to the human body. When using a conventional foot-operated medical trash can and a special medical garbage bag to hold infectious waste, during the process of opening the trash can, infectious aerosols will overflow into the air with the flip cover, polluting the surrounding personnel or environment. More dangerously, when tying the knot of the medical garbage bag, the infectious germs compressed out when the bulging garbage bag is tied directly spray onto the collector's face and spill into the air.

[0003] In the existing inventions, the trash cans with a negative pressure environment can only achieve the negative pressure in the trash can environment and cannot ensure that there is no germ compression overflow during the garbage bag collection process; the existing trash cans with a compression device are very likely to pierce the garbage bag with sharp waste in the garbage bag through mechanical compression, causing danger or even accidents, and can only be used for the compression of ordinary domestic waste and cannot be used for the compression treatment of medical waste and waste; the existing trash cans with a closing mouth cannot achieve the exclusion of gas in the medical garbage bag through one-way or two-way closing; therefore, there is no existing technology that can simultaneously achieve the safe collection of waste under a negative pressure environment in a medical trash can and the safe compression of the air discharge in the medical garbage bag, and solve the infection risk during the collection and packing of medical waste, especially infectious waste.

[0004] Therefore, the existing technology needs to be improved and developed. Summary of the Invention

[0005] Aiming at the above-mentioned defects of the existing technology, the purpose of the present invention is to provide a garbage collection device with negative pressure suction and compression and its control method, so as to solve the technical problem that the infectious waste gas in the bag directly sprays onto the collector's face and spills into the air when tying the knot of the existing garbage bag.

[0006] The technical solutions adopted by the present invention to solve the above problems are as follows:

[0007] A garbage collection device with negative pressure suction and compression, including: a frame assembly;

[0008] A bag-tying module is provided on the frame assembly. The bag-tying module is provided with a bag-tying channel that penetrates up and down and bag-tying components provided on both sides of the bag-tying channel. The bag-tying components are movable to clamp the garbage bag and form a constricted mouth; the bag-tying module is used for sealing connection with a matching trash can, and the bag-tying channel is used for docking with the mouth of the trash can;

[0009] A large-opening door module is arranged on the top of the bag-tying module;

[0010] A positive pressure module is disposed on the frame assembly; two air outlets of the positive pressure module are respectively disposed at the bottom of the bag-tying channel and on the inner wall of the large-opening door module facing the bag-tying channel;

[0011] A negative pressure module is disposed on the large-opening door module; an air extraction port of the negative pressure module is disposed on the inner wall of the large-opening door module facing the bag-tying channel;

[0012] Wherein, a garbage bag can be sleeved between the bag-tying module and the large-opening door module, and the bottom of the garbage bag enters the trash can through the bag-tying channel.

[0013] Optionally, the large-opening door module includes:

[0014] A large-opening door support plate fixed to the side wall of the frame assembly;

[0015] A main workbench is disposed on the top of the bag-tying module. A garbage input channel communicating with the bag-tying channel is provided on the main workbench. An air outlet of the positive pressure module disposed on the large-opening door module is disposed on the side wall of the garbage input channel and communicates with the garbage input channel. An air extraction port of the negative pressure module is disposed on the side wall of the garbage input channel and communicates with the garbage input channel;

[0016] A connecting block is disposed on the outer wall of the main workbench, and the connecting block is hinged to the large-opening door support plate;

[0017] An induction cover is disposed on the top of the main workbench for opening or closing the garbage input channel.

[0018] Optionally, the positive pressure module includes:

[0019] A positive pressure fan is disposed on the frame assembly;

[0020] A compressed positive pressure main pipeline, one end of which is connected to the positive pressure fan and the other end is communicated with the bottom of the bag-tying channel;

[0021] A one-way valve is disposed on the compressed positive pressure main pipeline.

[0022] Optionally, the positive pressure module further includes:

[0023] A bag-supporting main pipeline;

[0024] A positive pressure branch control valve, an air inlet end of the positive pressure branch control valve is connected to the positive pressure fan, and two air outlet ends are provided. The two air outlet ends are respectively connected to the compressed positive pressure main pipeline and the bag-supporting main pipeline;

[0025] A positive pressure air inlet nozzle is provided on the side wall of the garbage inlet channel and is communicated with the garbage input channel. The positive pressure air inlet nozzle is connected to one end of the bag supporting main pipeline away from the positive pressure branch control valve.

[0026] Optionally, the negative pressure module includes:

[0027] An air extraction nozzle is provided on the inner wall of the garbage input channel and is communicated with the garbage input channel;

[0028] A negative pressure air inlet main pipeline, one end of which is connected to the air extraction nozzle;

[0029] A negative pressure fan is provided on the frame assembly. The air inlet of the negative pressure fan is connected to one end of the negative pressure air inlet main pipeline away from the air extraction nozzle;

[0030] A filtering device is provided on the frame assembly and is connected to the air outlet of the negative pressure fan.

[0031] Optionally, the bag tying module further includes a sealing frame; the bag tying assembly includes a first bag tie clip and a second bag tie clip. The bottom end of the sealing frame is connected to the trash can, and the top end is connected to the bag tying module. The bag tying channel is formed inside the sealing frame. The first bag tie clip and the second bag tie clip are arranged inside the sealing frame, and the first bag tie clip and the second bag tie clip are respectively located on both sides of the bag tying channel. The first bag tie clip and the second bag tie clip can move towards each other.

[0032] A control method for a garbage collection device with negative pressure suction and compression is applied to the garbage collection device with negative pressure suction and compression as described in any one of the above, and includes the steps:

[0033] Control the negative pressure module to quickly extract air, and control the positive pressure module to inflate the bottom of the bag tying channel;

[0034] When the pressure value in the bag tying channel reaches the first preset pressure value, control the negative pressure module to stop extracting air, and control the positive pressure module to stop inflating the bottom of the bag tying channel;

[0035] Control the bag tying assembly to contract.

[0036] Optionally, before controlling the negative pressure module to quickly extract air and controlling the positive pressure module to inflate the bottom of the bag tying channel, it further includes the steps:

[0037] When the large door module is closed, control the positive pressure module to inflate the top of the bag tying channel;

[0038] When the pressure value in the bag tying channel reaches the second preset pressure value, control the positive pressure module to stop inflating the top of the bag tying channel.

[0039] Optionally, the negative pressure module includes a filtering device;

[0040] When the pressure value in the tying channel reaches the second preset pressure value, the positive pressure module is controlled to stop inflating air into the top of the tying channel, and the method further includes the following steps:

[0041] When the positive pressure module stops inflating air into the top of the tied channel, the negative pressure module is controlled to slowly draw air and deliver the drawn gas to the filtering device.

[0042] Optionally, the frame assembly includes a trash can support platform;

[0043] When the large door opening module is closed, before the positive pressure module is controlled to inflate air to the top of the tying channel, the steps also include:

[0044] When the trash can is placed on the trash can support platform, the trash can support platform is controlled to rise until the trash can reaches a preset height;

[0045] When the trash can rises to a preset height, the large door module is controlled to open;

[0046] When the garbage bag is placed between the closing module and the large door module, the large door module is controlled to close.

[0047] In summary, the beneficial effects of the present invention are:

[0048] The garbage collection device with negative pressure suction and compression of the present invention is provided with a positive pressure module, a negative pressure module and a tying module. The negative pressure module is used to extract the gas in the garbage bag. At the same time, the positive pressure module is used to inflate the garbage can so that the gas squeezes the outside of the garbage. Through the combined action of positive and negative pressures, the air in the garbage bag is quickly discharged, and the medical waste gas in the garbage bag is quickly compressed. A binding effect is formed at the tying point of the medical waste bag, and the suction and compression process is completed. The problem of bulging in the garbage bag when the tying point is knotted is avoided, thereby reducing the risk of overflow of infectious waste gas in the garbage bag; and the tying module is used to clamp the tying point of the compressed garbage bag to block the air circulation in the medical waste bag, so that the tying of the garbage bag is achieved, which is convenient for the subsequent tying and packaging of the garbage bag.

[0049] In addition, the garbage collection device with negative pressure suction and compression of the present invention, after the garbage bag is put on, blows air into the garbage bag through the positive pressure module, the gas expands the garbage bag and presses it against the inner wall of the garbage can, avoiding the problem that light medical waste does not settle in the garbage bag and occupies the space in the garbage bag, and the capacity sensor is prone to false alarms; in the process of collecting medical waste, the negative pressure module is used to slowly pump air into the garbage bag to maintain a negative pressure environment in the garbage bag, preventing gas overflow when throwing garbage. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0051] Figure 1 Structural schematic diagram of the garbage collection device with negative pressure suction and compression of the present invention;

[0052] Figure 2 Schematic diagram of the gas flow direction of the combined positive and negative pressure compression of the present invention;

[0053] Figure 3 Structural schematic diagram of the large opening door module of the present invention;

[0054] Figure 4 Structural schematic diagram of the positive pressure module of the present invention;

[0055] Figure 5 Schematic diagram of the gas flow of the positive pressure bag support of the present invention;

[0056] Figure 6 Structural schematic diagram of the negative pressure module of the present invention;

[0057] Figure 7 Structural schematic diagram of the bag tying module of the present invention;

[0058] Figure 8 Flow chart of the control method of the garbage collection device with negative pressure suction and compression of the present invention.

[0059] Wherein: 100, frame assembly; 110, support frame; 120, trash can support platform; 200, trash can; 300, bag tying module; 310, bag tying channel; 320, sealing frame; 330, first bag tying clip; 340, second bag tying clip; 350, garbage bag upper support member; 400, large opening door module; 410, garbage input channel; 420, large opening door support plate; 430, main workbench; 440, connecting block; 450, induction cover; 500, positive pressure module; 510, positive pressure fan; 520, positive pressure shunt control valve; 530, compressed positive pressure main pipeline; 540, bag support main pipeline; 541, intake pipe; 542, outlet pipe; 550, positive pressure intake nozzle; 600, negative pressure module; 610, negative pressure fan; 620, filtering device; 630, air extraction nozzle; 640, negative pressure intake main pipeline; 641, intake summary pipeline; 642, negative pressure intake branch pipeline; 700, sealing ring. Detailed implementation manners

[0060] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0061] Please refer to Figure 1 and Figure 2 In an embodiment of the present invention, a garbage collection device with negative pressure suction and compression is disclosed, including: a frame assembly 100; a bag-tying module 300 provided on the frame assembly 100, the bag-tying module 300 is provided with a vertically penetrating bag-tying channel 310 and bag-tying components provided on both sides of the bag-tying channel 310, the bag-tying components are movable to clamp the garbage bag and form a constricted opening; the bag-tying module 300 is used for sealing connection with a trash can 200, and the bag-tying channel 310 is used for docking with the mouth of the trash can 200; a large-opening module 400 provided on the top of the bag-tying module 300; a positive pressure module 500 provided on the frame assembly 100; two air outlets of the positive pressure module 500 are respectively provided at the bottom of the bag-tying channel 310 and on the inner wall of the large-opening module 400 facing the bag-tying channel 310; a negative pressure module 600 provided on the large-opening module 400; the air suction port of the negative pressure module 600 is provided on one side of the large-opening module 400 facing the bag-tying channel 310; wherein, a garbage bag can be sleeved between the bag-tying module 300 and the large-opening module 400, and the bottom of the garbage bag enters the trash can 200 through the bag-tying channel 310.

[0062] Specifically, the trash can 200 is placed on the frame assembly 100, the large door module 400 is opened, the trash bag is placed into the trash can 200 through the tying channel 310, and the opening edge of the trash bag is fixed to the top of the tying module 300, and then the large door module 400 is closed, and the large door module 400 presses the opening edge of the trash bag to the top of the tying module 300 to fix the trash bag. At this time, the outer surface of the trash bag and the inner surface of the trash can 200 form a first sealed space, and the inner surface of the trash bag and the large door module 400 form a second sealed space. The positive pressure module 500 is controlled to blow air into the trash bag from the large door module 400 toward the inner wall of the tying channel 310, and the gas opens the trash bag and presses it against the inner wall of the trash can 200. When the pressure value in the garbage bin 200 reaches a preset state, the negative pressure module 600 is controlled to start, and the gas in the second sealed space is pumped into a negative pressure, and the second sealed space is always kept in a negative pressure state during the garbage collection process. When the garbage in the garbage bag reaches a predetermined capacity, the positive pressure module 500 is controlled to start, and the gas is filled into the first enclosed space. The air pressure in the first enclosed space squeezes the outer wall of the garbage bag, and the negative pressure module 600 is controlled to accelerate the extraction of other in the second enclosed space. Under the combined action of positive and negative pressure, the air in the garbage bag is quickly discharged, the medical waste is compressed, and the medical waste bag is tied at the mouth, and the suction compression process is completed. The tying component is started, and the tying component clamps the garbage bag at the mouth, blocking the air circulation in the medical waste bag, and completing the tying operation. An air valve is also provided on the bottom wall of the tying channel. After the compression and tying of the garbage bag are completed, the air valve on the bottom wall of the tying channel is controlled to open, so that the gas in the first sealed space is discharged, and the first sealed space is prevented from being in a high pressure state for a long time. When it is necessary to take out the garbage bag, the large door module 400 is opened, the garbage bag is manually tied with a gooseneck knot from the clamped tie mouth, and the packaged medical waste is taken out and loaded into a new medical waste bag to enter the next cycle.

[0063] The garbage collection device with negative pressure suction and compression in this embodiment avoids problems such as light medical waste not settling in the garbage bag, occupying the space inside the garbage bag, and the capacity sensor being prone to false alarms by setting a positive pressure module 500, a negative pressure module 600, and a bag-tying module 300. The positive pressure module 500 presses the garbage bag against the inner wall of the trash can 200. The fan of the negative pressure module 600 runs at a low speed to maintain a slightly negative pressure environment inside the garbage bag (the second sealed space) during the garbage collection process. When the collected medical waste reaches the specified capacity, the negative pressure fan of the negative pressure module 600 runs at a high speed to extract the air inside the garbage bag and at the same time inflate the bottom of the bag-tying channel 310 through the positive pressure module 500 to squeeze the outside of the garbage, realizing the compression of the medical waste inside the garbage bag under the combined action of positive and negative pressures, avoiding the problem of the garbage bag bulging when tying the knot, thereby reducing the risk of infectious waste gas overflowing inside the garbage bag; moreover, the bag-tying module 300 tightens the mouth of the compressed garbage bag, facilitating the subsequent tying and packing of the garbage bag.

[0064] Please refer to Figure 1 and Figure 3 , the large-opening door module 400 includes: a large-opening door support plate 420 fixed to the side wall of the frame assembly 100; a main workbench 430 arranged on the top of the bag-tying module 300, a garbage input channel 410 communicating with the bag-tying channel 310 is provided on the main workbench 430, the air outlet of the positive pressure module 500 arranged on the large-opening door module is arranged on the side wall of the garbage input channel 410 and communicates with the garbage input channel 410, the air extraction port of the negative pressure module 600 is arranged on the side wall of the garbage input channel 410 and communicates with the garbage input channel 410; a connecting block 440 arranged on the outer wall of the main workbench 430, the connecting block 440 is hinged to the large-opening door support plate 420; an induction cover 450 arranged on the top of the main workbench 430 for opening or closing the garbage input channel 410.

[0065] One end of the large-opening door support plate 420 facing the large-opening door module 400 is fixedly connected to one side of a hinge, the other side of the hinge is fixedly connected to the connecting block 440, and the two sides of the hinge can rotate relative to each other to realize the opening and closing of the large-opening door module 400. The opening and closing of the large-opening door module 400 are realized through the hinge, with a simple structure and convenient use.

[0066] Specifically, flip open the main workbench 430, put the garbage bag into the trash can 200 through the bag-tying channel 310, and then close the main workbench 430. A sealed space is formed between the garbage input channel 410 on the main workbench 430 and the inner wall of the garbage bag. Control the positive pressure module 500 to inflate the garbage input channel 410, and the gas presses the garbage bag against the inner wall of the trash can 200. When collecting garbage, open the induction cover 450, put the medical waste into the garbage bag through the garbage input channel, and close the induction cover 450. When the garbage is collected to the preset capacity, control the negative pressure module 600 to extract the gas in the garbage bag through the garbage input channel 410, and at the same time control the positive pressure module 500 to squeeze the outside of the garbage bag. After the medical waste is compressed, open the main workbench 430 again, tie the mouth of the garbage and take it out from the bag-tying channel 310.

[0067] For the garbage collection device with negative pressure suction and compression in this embodiment, an induction cover 450 is provided at the top of the main workbench 430 to facilitate the input of garbage. A garbage input channel 410 is provided on the large-opening door module 400, and the air outlet of the positive pressure module 500 and the air suction port of the negative pressure module 600 are provided on the side wall of the garbage input channel 410. While enabling the air outlet of the positive pressure module 500 and the air suction port of the negative pressure module 600 to communicate with the inside of the garbage bag, it avoids interference with the opening or closing of the induction cover 450, with a reasonable layout and convenient use.

[0068] Please refer to Figure 4 , the positive pressure module 500 includes: a positive pressure blower 510, which is arranged on the frame assembly 100; a compressed positive pressure main pipeline 530, one end of which is connected to the positive pressure blower 510, and the other end is communicated with the bottom of the bag-tying channel 310; a one-way valve, which is arranged on the compressed positive pressure main pipeline 530.

[0069] Specifically, the positive pressure blower 510 is arranged on the frame assembly 100. The air outlet of the positive pressure blower 510 is connected to one end of the compressed positive pressure main pipeline 530. The other end of the compressed positive pressure main pipeline 530 is communicated with the bag-tying channel 310. A one-way valve is arranged at the end of the compressed positive pressure main pipeline 530 far from the positive pressure blower 510. When the positive pressure blower 510 is controlled to start, the positive pressure blower 510 fills the compressed positive pressure main pipeline 530 with gas. The gas in the compressed positive pressure main pipeline 530 enters the bag-tying channel 310 through the one-way valve, enters the trash can 200 through the bag-tying channel 310, and squeezes the garbage bag.

[0070] In this embodiment, inflation inside the trash can 200 is achieved through the positive pressure blower 510 and the compressed positive pressure main pipeline 530. The structure is simple and easy to assemble. A one-way valve is provided at one end of the compressed positive pressure main pipeline 530 away from the positive pressure blower 510 to prevent the gas pressure inside the trash can 200 from gradually increasing and hindering the gas in the compressed positive pressure main pipeline 530 from entering the trash can 200, thereby affecting the inflation effect.

[0071] Please refer to Figure 4 and Figure 5 , the positive pressure module 500 further includes: a bag-supporting main pipeline 540; a positive pressure branch control valve 520, the intake end of the positive pressure branch control valve 520 is connected to the positive pressure blower 510, and there are two outlet ends, and the two outlet ends are respectively connected to the compressed positive pressure main pipeline 530 and the bag-supporting main pipeline 540; a positive pressure air inlet nozzle 550, which is arranged on the side wall of the garbage access channel and is communicated with the garbage input channel 410, and the positive pressure air inlet nozzle 550 is connected to one end of the bag-supporting main pipeline 540 away from the positive pressure branch control valve 520.

[0072] Specifically, place the garbage bag in the bag-tying channel 310 and close the large opening module 400. The edge of the medical garbage bag is pressed between the large opening module 400 and the bag-tying module 300 to form a seal. Control the positive pressure blower 510 to start and output gas. The gas enters the bag-supporting main pipeline 540 through the positive pressure branch control valve 520, and then is blown into the garbage bag through the positive pressure air inlet nozzle 550 to expand the garbage bag and press it tightly against the inner wall of the trash can 200. When the predetermined pressure is reached, the positive pressure blower 510 stops, and the bag-supporting function is completed.

[0073] In this embodiment, by blowing air into the garbage bag through the positive pressure air inlet nozzle 550, the garbage bag is expanded and pressed tightly against the inner wall of the trash can 200, avoiding problems such as light medical waste not settling in the garbage bag, occupying the space inside the garbage bag, and the capacity sensor being prone to false alarms.

[0074] In this embodiment, the bag-supporting main pipeline 540 includes an intake pipe 541 and a plurality of outlet pipes 542. One end of the intake pipe 541 is connected to the outlet end of the positive pressure branch control valve 520, and the other end is respectively connected to the plurality of outlet pipes 542. The end of the outlet pipe 542 away from the intake pipe 541 is connected to the positive pressure air inlet nozzle 550.

[0075] Specifically, the number of the positive pressure air inlets 550 can be set to two, and two air outlet pipes 542 are provided. One end of the air inlet pipe 541 is connected to the air outlet end of the positive pressure shunt control valve 520, and the other end of the air inlet pipe 541 is connected to the air inlet of the shunt valve. The two air outlet ports of the shunt valve are respectively connected to the two air outlet pipes 542. The ends of the two air outlet pipes 542 far away from the shunt valve are respectively connected to the two positive pressure air inlets 550. The two positive pressure air inlets 550 are oppositely arranged on both sides of the garbage input channel 410 for blowing air on both sides of the garbage bag. Of course, the number of the air outlet pipes 542 and the positive pressure air inlets 550 in this embodiment is not limited to two, and multiple ones can also be set according to requirements.

[0076] By arranging multiple positive pressure air inlets 550, the multiple positive pressure air inlets 550 are evenly distributed around the garbage input channel, so that the air blown by the positive pressure air inlets 550 on the garbage bag is more uniform, ensuring that all positions of the garbage bag are tightly attached to the inner wall of the trash can 200.

[0077] Please refer to Figure 6 , the negative pressure module 600 includes: an air extraction nozzle 630, which is arranged on the inner wall of the garbage input channel 410 and is communicated with the garbage input channel 410; a negative pressure air inlet main pipeline 640, one end of which is connected to the air extraction nozzle 630; a negative pressure fan 610, which is arranged on the frame assembly 100, and the air inlet of the negative pressure fan 610 is connected to the end of the negative pressure air inlet main pipeline 640 far away from the air extraction nozzle 630; a filtering device 620, which is arranged on the frame assembly 100 and is connected to the air outlet of the negative pressure fan 610.

[0078] Specifically, during the medical waste collection process, the negative pressure fan 610 is controlled to operate at a low speed to slowly extract the gas in the garbage bag, so that a slightly negative pressure environment is maintained in the garbage bag. The gas in the garbage bag enters the negative pressure air inlet main pipeline 640 through the air extraction nozzle 630, passes through the negative pressure air inlet main pipeline 640 and then enters the filtering device 620 through the negative pressure fan 610. The filtering device 620 is provided with a high-efficiency filter screen, and the filter screen adsorbs the toxic substances extracted, and after harmless treatment, it is discharged into the air. While extracting the gas in the garbage bag, the gas extracted from the garbage bag is harmlessly treated to avoid polluting the air with the gas in the garbage bag.

[0079] In this embodiment, the negative pressure air inlet main pipeline 640 includes an air inlet summary pipeline 641, a gas conversion valve and multiple negative pressure air inlet branch pipelines 642. One end of the air inlet summary pipeline 641 is connected to the air inlet of the negative pressure fan 610, and the other end of the air inlet summary pipeline 641 is respectively connected to the multiple negative pressure air inlet branch pipelines 642; the end of the negative pressure air inlet branch pipeline 642 far away from the air inlet summary pipeline 641 is connected to the air extraction nozzle 630.

[0080] In this embodiment, the air extraction nozzles 630 include a first air extraction nozzle, a second air extraction nozzle, a third air extraction nozzle, and a fourth air extraction nozzle; two negative pressure intake branch pipelines 642 are provided, and both of the two negative pressure intake branch pipelines 642 include a main pipe and two branch pipes. One end of the main pipe is connected to the gas conversion valve, and the other end is respectively connected to the two branch pipes; the two branch pipes of one of the negative pressure intake branch pipelines 642 are respectively connected to the first air extraction nozzle and the second air extraction nozzle, and the two branch pipes of the other negative pressure intake branch pipeline 642 are respectively connected to the third air extraction nozzle and the fourth air extraction nozzle.

[0081] When the trash can 200 normally collects medical waste, the negative pressure fan 610 is always started to maintain a negative pressure environment inside the trash can 200. Medical waste is put into the garbage bag through the garbage inlet channel. The air inside the trash can 200 enters the negative pressure intake branch pipelines 642 through the first air extraction nozzle, the second air extraction nozzle, the third air extraction nozzle, and the fourth air extraction nozzle respectively, and converges into the intake summary pipeline 641 through the two negative pressure intake branch pipelines 642, and then is pumped into the filtering device 620 through the negative pressure fan 610. The filtering device 620 is provided with a high-efficiency filter screen, which can adsorb the extracted toxic substances and discharge them into the air after harmless treatment, effectively preventing the gas of infectious waste from spilling into the air. Small ventilation holes are opened around the plurality of air extraction nozzles 630, and the inside of the small ventilation holes is communicated with the air extraction nozzles 630 surrounded by them. These ventilation holes form a negative pressure air curtain, effectively preventing the gas in the garbage bag from overflowing.

[0082] By providing a plurality of air extraction nozzles 630, the plurality of air extraction nozzles 630 are evenly distributed around the garbage inlet channel, so that the air extraction of the air extraction nozzles 630 from the garbage bag is more sufficient, preventing part of the gas of infectious waste from spilling into the air.

[0083] In this embodiment, the side wall of the garbage input channel 410 is provided with 4 negative pressure ventilation holes, 2 positive pressure ventilation holes, and 1 air pressure detection hole. The air pressure detection hole is connected to an air pressure detection pipeline, and the air pressure detection pipeline is used to detect the air pressure intensity inside the connected input channel. The 4 negative pressure ventilation holes are respectively installed with a first air extraction nozzle, a second air extraction nozzle, a third air extraction nozzle, and a fourth air extraction nozzle, and the 2 positive pressure ventilation holes are respectively installed with the positive pressure intake nozzles 550, and small ventilation holes are opened around each negative pressure ventilation hole, and the inside of the small ventilation holes is communicated with the surrounding negative pressure ventilation holes. In this embodiment, the main workbench 430, the bag support main pipeline 540, the positive pressure branch control valve 520, the negative pressure outlet main pipeline, and the negative pressure intake main pipeline 640 are integrated into the installation cavity, with a simple structure and convenient cleaning and maintenance.

[0084] Please refer to Figure 7, the bag-tying module 300 further includes a sealing frame 320. The bag-tying assembly includes a first bag-tying clip 330 and a second bag-tying clip 340. The bottom end of the sealing frame 320 is connected to the edge of the opening of the trash can 200, and the top end is connected to the bag-tying module 300. The sealing frame 320 is provided with the bag-tying channel 310. The first bag-tying clip 330 and the second bag-tying clip 340 are arranged inside the sealing frame 320, and the first bag-tying clip 330 and the second bag-tying clip 340 are respectively located on both sides of the bag-tying channel 310. The first bag-tying clip 330 and the second bag-tying clip 340 can move towards each other.

[0085] Specifically, the bag-tying module 300 includes a driving motor and a connecting member. One end of the connecting member is connected to the output shaft of the motor, and the other end of the connecting member is respectively connected to the first bag-tying clip 330 and the second bag-tying clip 340, and is used to drive the first bag-tying clip 330 and the second bag-tying clip 340 to approach each other or move away from each other. When the positive pressure module 500 and the negative pressure module 600 complete the suction and compression process, the motor is started. The motor drives the first bag-tying clip 330 and the second bag-tying clip 340 to move towards each other through the connecting member until the first bag-tying clip 330 and the second bag-tying clip 340 clamp the mouth of the garbage bag, blocking the air flow inside the medical garbage bag and completing the bag-tying operation. Open the large-opening door module 400, manually tie the garbage bag, the driving motor makes the first bag-tying clip 330 and the second bag-tying clip 340 move away from each other, manually take out the garbage bag from between the first bag-tying clip 330 and the second bag-tying clip 340, and finally load a new garbage bag to enter the next cycle.

[0086] In this embodiment, a garbage bag upper support member 350 is provided on the upper surface of the bag-tying module 300 around the bag-tying channel 310. Place the trash can 200 on the frame assembly 100, open the large-opening door module 400, put the garbage bag into the trash can 200 through the bag-tying channel 310, and put the opening edge of the garbage bag on the garbage bag upper support member 350, and then close the large-opening door module 400 to complete the placement of the garbage bag. The structure is simple and convenient for fixing the edge of the garbage bag.

[0087] Please refer to Figure 1 , the frame assembly 100 includes a support frame 110 and a trash can support platform 120. The trash can support platform 120 is liftably arranged at the bottom of the support frame 110, and the trash can 200 is arranged on the trash can support platform 120.

[0088] Specifically, three positioning blocks are oppositely provided on the trash can support platform 120. The three positionings are respectively arranged on the left and right sides and the rear side of the trash can support platform 120. The three positioning blocks enclose a limiting space for placing the trash can 200. When loading the trash can 200, first push the trash can 200 into the limiting space from the front side of the trash can support platform 120 to realize the position positioning of the trash can 200. Control the trash can support platform 120 to rise, and the trash can support platform 120 presses the upper end surface of the trash can 200 against the lower surface of the bag-tying module 300 to form a seal. The trash can support platform 120 can be realized by a motor and a lifting mechanism. The lifting mechanism belongs to a conventional technical means, and the specific structure and implementation process will not be elaborated here.

[0089] Please refer to Figure 3 , the garbage collection device with negative pressure suction and compression further includes a trash can sealing ring 700, and the trash can sealing ring 700 is arranged between the edge of the barrel mouth of the trash can 200 and the bag-tying module 300.

[0090] Specifically, the trash can sealing ring 700 can be a rubber sealing ring or a plastic sealing ring. The rubber sealing ring and the plastic sealing ring have the characteristics of high wear resistance and excellent sealing performance.

[0091] As another embodiment of the present application, please refer to Figure 8 , a control method for a garbage collection device with negative pressure suction and compression is disclosed, which is applied to the garbage collection device with negative pressure suction and compression as described above, and includes the following steps:

[0092] S100. Control the negative pressure module to quickly pump air and control the positive pressure module to inflate the bottom of the bag-tying channel.

[0093] S200. When the pressure value in the bag-tying channel reaches the first preset pressure value, control the negative pressure module to stop pumping air and control the positive pressure module to stop inflating the bottom of the bag-tying channel.

[0094] S300. Control the bag-tying assembly to contract.

[0095] Specifically, a preset capacity value for the garbage is set, and the actual capacity value of the garbage in the garbage bag is monitored in real time through a sensor. When it is detected that the actual capacity value of the garbage in the garbage bag reaches the preset capacity value, the negative pressure module is controlled to quickly pump air, and the positive pressure module is controlled to inflate the bottom of the bagging channel. Since the bottom of the bagging channel is connected to the inside of the trash can to form a sealed space, when the positive pressure module inflates, the pressure inside the trash can increases, squeezing the garbage bag and accelerating the discharge of medical waste gas inside the garbage bag. A first preset pressure value is set, and the actual pressure value inside the bagging channel is detected in real time through a pressure sensor. When the actual pressure value reaches the first preset pressure value, it indicates that there is no gas or less gas in the garbage bag, and the medical waste compression is completed. The negative pressure module is controlled to stop pumping air, and the positive pressure module is controlled to stop inflating the bottom of the bagging channel. After the positive pressure module and the negative pressure module stop, the bagging assembly is controlled to contract.

[0096] In this embodiment, before controlling the negative pressure module to quickly pump air and controlling the positive pressure module to inflate the bagging channel, the following steps are further included: when the large opening module is closed, controlling the positive pressure module to inflate the top of the bagging channel; when the pressure value in the bagging channel reaches a second preset pressure value, controlling the positive pressure module to stop inflating the top of the bagging channel.

[0097] Specifically, after the garbage bag is installed, the large opening module is closed. When it is detected that the large opening module has completed the closing action, the positive pressure module is controlled to inflate the top of the bagging channel, and the actual pressure value inside the bagging channel is detected in real time. Since a sealed space is formed between the inside of the garbage bag and the large opening module, when the positive pressure module inflates the top of the bagging channel, gas enters the garbage bag. When the pressure value in the bagging channel reaches the second preset pressure value, it indicates that the air pressure in the garbage bag is sufficient to press the garbage bag against the inner wall of the trash can. At this time, the positive pressure module is controlled to stop inflating the top of the bagging channel.

[0098] In this embodiment, the negative pressure module includes a filtering device; after controlling the positive pressure module to stop inflating the top of the bagging channel when the pressure value in the bagging channel reaches the second preset pressure value, the following steps are further included: when the positive pressure module stops inflating the top of the bagging channel, controlling the negative pressure module to slowly pump air and conveying the extracted gas to the filtering device.

[0099] Specifically, the filtering device refers to a device used to adsorb toxic substances extracted from the garbage bag and perform harmless treatment. When it is detected that the positive pressure module stops inflating the top of the bagging channel, the negative pressure module is controlled to slowly pump air and convey the extracted gas to the filtering device for harmless treatment to avoid polluting the air with the gas in the garbage bag.

[0100] In this embodiment, the frame assembly includes a trash can support platform; before controlling the positive pressure module to inflate the top of the bagging channel when the large opening module is closed, the following steps are further included:

[0101] When the trash can is placed on the trash can support platform, control the trash can support platform to rise until the trash can reaches a preset height;

[0102] When the trash can reaches the preset height, control the large opening module to open;

[0103] When the garbage bag is sleeved between the bag tying module and the large opening module, control the large opening module to close.

[0104] Specifically, set a preset height, which means that when the trash can reaches this height, the edge of the trash can mouth is just sealed and connected to the bottom wall of the bag tying module; place the trash can on the trash can support platform, when it is detected that the trash can has been placed on the trash can support platform, control the trash can support platform to rise, and when it is detected that the trash can reaches the preset height, control the large opening module to open, and manually sleeve the garbage bag between the bag tying module and the large opening module. When it is detected that the garbage bag has been sleeved between the bag tying module and the large opening module, control the large opening module to close.

[0105] When the large opening module completes the closing action, control the positive pressure module to inflate the bag tying channel, so that the garbage bag is pressed tightly in the trash can.

[0106] In summary, the garbage collection device with negative pressure suction and compression in this embodiment, by setting the positive pressure module 500, the negative pressure module 600 and the bag tying module 300, uses the negative pressure module 600 to extract the gas in the garbage bag, and at the same time inflates the trash can 200 through the positive pressure module 500 to squeeze the outside of the garbage, so that the air in the garbage bag is quickly discharged, realizing the rapid compression of the medical waste gas in the garbage bag, the medical waste is compressed, and a constriction effect is formed at the bag tying place of the medical garbage bag, completing the suction and compression process, avoiding the problem of the garbage bag bulging when tying the knot, thereby reducing the risk of spillage of infectious waste gas in the garbage bag; and, through the bag tying module 300 to clamp the constriction place of the compressed garbage bag, blocking the air flow in the medical garbage bag, realizing the bag tying of the garbage bag, which is convenient for subsequent tying and packing of the garbage bag.

[0107] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0108] It should be noted that the present invention takes the garbage collection device with negative pressure suction and compression and its control method as an example to introduce the specific structure and working principle of the present invention, but the application of this embodiment is not limited to the garbage collection device with negative pressure suction and compression and its control method, and can also be applied to the production and use of other similar workpieces.

[0109] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

[0110] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A garbage collection device with negative pressure suction and compression, characterized in that, Comprising: A frame component; A bag-tying module provided on the frame component. The bag-tying module is provided with a vertically penetrating bag-tying channel and bag-tying components provided on both sides of the bag-tying channel. The bag-tying components are movable to clamp the garbage bag and form a constricted opening. The bag-tying module is used for sealing connection with a trash can, and the bag-tying channel is used for docking with the mouth of the trash can; A large-opening module provided on the top of the bag-tying module; A positive-pressure module provided on the frame component. Two air outlets of the positive-pressure module are respectively provided at the bottom of the bag-tying channel and on the inner wall of the large-opening module facing the bag-tying channel; A negative-pressure module provided on the large-opening module. The air extraction port of the negative-pressure module is provided on the inner wall of the large-opening module facing the bag-tying channel; Wherein, a garbage bag can be sleeved between the bag-tying module and the large-opening module, and the bottom of the garbage bag enters the trash can through the bag-tying channel; The large-opening module includes: A large-opening support plate fixed to the side wall of the frame component; A main workbench provided on the top of the bag-tying module. The main workbench is provided with a garbage input channel communicating with the bag-tying channel. The air outlet of the positive-pressure module provided on the large-opening module is provided on the side wall of the garbage input channel and communicates with the garbage input channel. The air extraction port of the negative-pressure module is provided on the side wall of the garbage input channel and communicates with the garbage input channel; A connecting block provided on the outer wall of the main workbench. The connecting block is hinged to the large-opening support plate; An induction cover provided on the top of the main workbench for opening or closing the garbage input channel; The positive-pressure module includes: A positive-pressure fan provided on the frame component; A compressed positive-pressure main pipeline, one end of which is connected to the positive-pressure fan and the other end of which is communicated with the bottom of the bag-tying channel; A one-way valve provided on the compressed positive-pressure main pipeline; The bag-tying module further includes a sealing frame. The bag-tying components include a first bag-tying clip and a second bag-tying clip. The bottom end of the sealing frame is connected to the trash can, and the top end is connected to the bag-tying module. The bag-tying channel is formed within the sealing frame. The first bag-tying clip and the second bag-tying clip are provided within the sealing frame, and the first bag-tying clip and the second bag-tying clip are respectively located on both sides of the bag-tying channel. The first bag-tying clip and the second bag-tying clip can move towards each other.

2. The garbage collection device with negative pressure suction and compression according to claim 1, characterized in that, The positive-pressure module further includes: A bag-supporting main pipeline; A positive-pressure branch control valve. The air inlet end of the positive-pressure branch control valve is connected to the positive-pressure fan, and there are two air outlet ends. The two air outlet ends are respectively connected to the compressed positive-pressure main pipeline and the bag-supporting main pipeline; A positive-pressure air inlet nozzle connected to the air outlet of the large-opening module, provided on the side wall of the garbage input channel and communicating with the garbage input channel. The positive-pressure air inlet nozzle is connected to one end of the bag-supporting main pipeline far from the positive-pressure branch control valve.

3. The garbage collection device with negative pressure suction and compression according to claim 1, characterized in that, The negative-pressure module includes: An air extraction nozzle connected to the air extraction port of the negative-pressure module, provided on the inner wall of the garbage input channel and communicating with the garbage input channel; The negative pressure intake main pipeline is connected to the suction nozzle at one end; The negative pressure fan is arranged on the frame assembly, and the air inlet of the negative pressure fan is connected to the end of the negative pressure intake main pipeline away from the suction nozzle; The filtering device is arranged on the frame assembly and is connected to the air outlet of the negative pressure fan.

4. A control method for a garbage collection device with negative pressure suction and compression, characterized in that, Applied to the garbage collection device with negative pressure suction and compression according to any one of claims 1 to 3, the control method of the garbage collection device with negative pressure suction and compression includes the steps: Control the negative pressure module to quickly extract air, and control the air outlet located at the bottom of the tying channel on the positive pressure module to inflate the bottom of the tying channel to squeeze the outer wall of the garbage bag; When the pressure value in the tying channel reaches the first preset pressure value, control the negative pressure module to stop extracting air and control the positive pressure module to stop inflating the bottom of the tying channel; Control the tying assembly to contract.

5. The control method of the garbage collection device with negative pressure suction and compression according to claim 4, characterized in that, Before controlling the negative pressure module to quickly extract air and controlling the positive pressure module to inflate the bottom of the tying channel, it further includes the steps: When the large opening module is closed, control the air outlet located on the side wall of the garbage input channel on the positive pressure module to inflate the top of the tying channel, and the gas enters the garbage bag; When the pressure value in the tying channel reaches the second preset pressure value, control the positive pressure module to stop inflating the top of the tying channel.

6. The control method of the garbage collection device with negative pressure suction and compression according to claim 5, characterized in that, The negative pressure module includes a filtering device; After controlling the positive pressure module to stop inflating the top of the tying channel when the pressure value in the tying channel reaches the second preset pressure value, it further includes the steps: When the positive pressure module stops inflating the top of the tying channel, control the negative pressure module to slowly extract air and transport the extracted gas to the filtering device.

7. The control method of the garbage collection device with negative pressure suction and compression according to claim 5, characterized in that, The frame assembly includes a trash can support platform; Before controlling the positive pressure module to inflate the top of the tying channel when the large opening module is closed, it further includes the steps: When the trash can is placed on the trash can support platform, control the trash can support platform to rise until the trash can reaches the preset height; When the trash can reaches the preset height, control the large opening module to open; When the garbage bag is sleeved between the tying module and the large opening module, control the large opening module to close.

Images