560results about "Refuse cleaning" patented technology

Systems and methods for sanitizing, cleaning, and deodorizing the interior of a garbage can are provided. A device is provided that includes a housing and an adjustable nozzle configured to dispense a cleaning solution into the interior of the garbage can. Additionally, the device includes a power source such as a battery, as well as an electronic board that can enable and disable the nozzle. The device can be mounted to an underside of a lid of the garbage can, which allows solution to be sprayed downwardly into the interior of the garbage can and bags contained therein. The adjustable nozzle can be adjusted to a number of different spray patterns. When the solution of the device is depleted, it can be replaced for further use of the device.

The present invention relates to a medical waste sterilization packaging paper comprising: a partially open collection area; a side area surrounding the collection area; and a bottom area, wherein the sterilization packaging paper is made of a material that blocks the penetration of pathogens contained in the medical waste and selectively allows only a sterilant used in the sterilization process to pass therethrough, and the sterilization packaging paper includes a sterilization identification unit that serves as at least one of a chemical indicator or a biological indicator for confirming the sterilization of the medical waste.

The invention discloses a control system and method for a garbage compression station, and belongs to the technical field of garbage compression stations, the control system comprises a PLC (Programmable Logic Controller), an image acquisition module, a server image processing unit GPU (Graphic Processing Unit), sensors and a data processing unit, and the sensors and the image acquisition module-server image processing unit GPU arranged at each station realize dual detection. The operation of each device is controlled under the combined action of the PLC and the data processing unit; a hook arm transfer trolley is moved in place, a feeding door of a compatible garbage can is opened, a double-folding chute is overturned in place, a discharging trolley is moved in place, a rapid roller shutter door is automatically opened, the discharging trolley discharges materials, a deodorization system exhausts air for deodorization, a compression head assembly compresses garbage, the feeding door of the compatible garbage can is closed, and the hook arm transfer trolley transfers the materials. A high-pressure nozzle on the mechanical arm automatically cleans the first-layer working platform, and the intelligent sweeping robot automatically cleans the second-layer working platform.

The invention discloses an intelligent sterilizing and spraying system for a garbage transfer station, relates to the technical field of intelligent sterilizing and spraying, and aims to solve the problem that the sterilizing effect of the garbage transfer station is not obvious. By accurately controlling starting, stopping and adjusting of the spraying device, unnecessary waste can be avoided, so that energy and disinfectant are saved, early warning responses of different intensities are conducted according to the recognized abnormal degree, an operator can be more effectively reminded to pay attention to the abnormal condition, measures are taken in time for treatment, further deterioration of the problem is avoided, and the working efficiency is improved. According to the requirements of different disinfection schemes, the type and dosage of the disinfectant are flexibly adjusted, the device is suitable for garbage transfer stations of different scales and types, the opportunity of manual contact with the disinfectant is reduced through automatic and intelligent operation, and through real-time monitoring and intelligent disinfection spraying, the disinfection efficiency is improved. The concentration of harmful gas, the concentration of particulate matter and the like in the waste transfer station can be remarkably reduced, and the safety and the sanitary level are improved.

The invention belongs to the technical field of garbage treatment, and particularly relates to an intelligent household garbage classification and recovery device which comprises an intelligent garbage classification and collection box body. The side wall of the intelligent garbage classified collection box body is fixedly connected with a box body; the side wall of the box body is fixedly connected with an air pump; one end of the air pump is fixedly connected with a conveying pipe; an electric push rod pushes a sealing plate to open a branch pipe, the branch pipe is used for exhausting air, peculiar smells in the air are adsorbed through an activated carbon cover, and finally the air is exhausted to the outside through an exhaust pipe, so that the peculiar smells can be removed when the intelligent garbage classification and collection box body is used, and the freshness of air around the intelligent garbage classification and collection box body is improved; the situation that peculiar smell generated by garbage placed for a long time floats in the air is reduced, meanwhile, the sealing effect of the branch pipe can be achieved through the sealing plate when the branch pipe is not used, the situation that the garbage enters the branch pipe to cause blockage is reduced, and then the air suction effect of the branch pipe is improved.

The utility model relates to the technical field of syringe needle production, in particular to a waste syringe needle recovery device for syringe needle production, which comprises a recovery box, a protection bin arranged in the recovery box, a protection plate arranged in the protection bin, a spraying structure arranged in the protection bin, and a driving structure arranged on the recovery box. A fixing structure used for limiting and fixing the protection bin is arranged on the recycling box, the spraying structure comprises a liquid storage box fixedly connected to the vertical inner wall of the protection bin, a plurality of spraying heads fixedly penetrate through the liquid storage box, a liquid inlet pipe fixedly penetrates through the top of the liquid storage box, and a pair of connecting lugs are fixedly connected to the liquid storage box; the connecting lugs and the protective bin are in threaded connection with the same dismounting bolt. Compared with needle recovery in the prior art, the needle recovery device has the advantages that due to the arrangement of the driving structure and other components, other articles are prevented from accidentally falling into the recovery box and being difficult to take out, and the risk that irrelevant personnel are injured due to touching waste needles is effectively avoided.

The invention relates to the technical field of medical waste liquid treatment, in particular to a medical waste liquid classified collection device which comprises a collection vehicle, an annular partition plate is fixedly connected to the interior of a liquid collection cylinder, a separation rotating cylinder is rotatably connected to the inner top wall of the liquid collection cylinder, and an automatic suction part is arranged in a first liquid outlet pipe. A liquid pump is fixedly installed on the left side of the ring frame base, and a rotating rod frame is rotationally connected to the inner side of the ring frame base. According to the medical waste liquid classified collection device, solid-liquid separation is conducted through a filter screen structure in a filter screen groove in a separation rotary drum, at the moment, a slag discharging groove opening of an annular partition plate is opened through a discharging groove of a material blocking plate, filtered slag is discharged into a slag discharging pipe in cooperation with a rotating scraper plate and collected through a dirt collection box, the separation rotary drum rotates to give centrifugal force to a piston column, and the piston column is separated from the material blocking plate; and small-molecule liquid is discharged into the liquid collecting cylinder through the filter membrane layer with the small-molecule permeable membrane structure, so that the separation effect of liquid with large and small molecular structures in the separation drum is realized.

The utility model discloses an inspection and quarantine waste containing barrel, and relates to the technical field of quarantine supplies, the inspection and quarantine waste containing barrel comprises a barrel body, a separation assembly is arranged in the barrel body, a disinfection machine is arranged on one side of the barrel body, the separation assembly comprises a separation plate, the separation plate is fixedly installed on the inner wall of the middle of the barrel body, and a push plate is slidably inserted in one side of the barrel body; according to the quarantine waste storage bin, the partition assembly is arranged, and the bin body can be divided into two layers through the partition plate, so that quarantine waste of different types can be contained respectively, mutual pollution of the quarantine waste and the quarantine waste can be prevented, and follow-up arrangement of the quarantine waste is more convenient; the disinfection mechanism is arranged, waste which is located on the lower layer and emits harmful gas can be disinfected through the spray head, and therefore volatilization of the harmful gas caused by long-time placement can be reduced, and harm of the waste to medical staff is reduced.

The utility model relates to the field of water body garbage cleaning, concretely to a kind of spraying and killing device for cleaning boat, and killing device is arranged on the ship body, the rear cabin device is arranged on the top of the ship body, and the front cabin device is arranged in front end;The killing device includes spraying component and injection component, the spraying component is arranged at rear cabin device and front cabin device, and the injection component is arranged in the front end of ship body.Killing is carried out in front cabin device and rear cabin device by spraying component, and pathogen can be inactivated quickly when garbage is collected, prevent operating personnel from contacting infection, and avoid pollution water area to cause disease transmission;Killing is carried out when temporarily storing in rear cabin, can delay the corruption process, control the smell diffusion, reduce the influence to surrounding environment and air quality;Killing is carried out by injection component when garbage is unloaded and transported, can avoid the risk of breeding of disease vector in disposal environment, avoid that garbage temporary storage point becomes pollution source, and provide sanitary basis for garbage resource utilization simultaneously.

The invention relates to the field of medical auxiliary instruments, in particular to an automatic debridement waste collecting and nursing device in operating room nursing, which comprises a collecting pipe, the collecting pipe is communicated with a collecting head, and a pressure cavity is embedded in the edge of the collecting head; the pressure cavity communicates with a transmission mechanism used for transmitting power, the transmission mechanism is connected with a high-pressure power source, and the transmission mechanism is provided with a power output end and a trigger end. The separating mechanism is used for carrying out solid-liquid separation on waste; the cleaning mechanism is used for conveying cleaning liquid to the collecting head; the power output end is in transmission connection with the collecting head, and the power output end is used for extruding the collecting head to achieve sealing when the pressure cavity is pressed. When the pressure cavity is pressed to a preset stroke, the trigger end triggers the high-pressure power source to release power so as to drive the separation mechanism and the cleaning mechanism to operate, and solid-liquid separation and collection and runner cleaning are achieved. The debridement device is used for achieving debridement integrated operation; operation interruption is reduced, and labor intensity of nursing staff is reduced.

The unattended garbage room comprises a garbage room body, and a bag breaking unit, a sorting unit, a throwing unit, an identification unit and a control unit which are arranged in the garbage room body, the bag breaking unit is used for breaking the thrown garbage bags; the sorting unit is used for being matched with the bag breaking unit to break the bags and sorting the broken garbage bags; the throwing unit is used for throwing the garbage after bag breaking; the recognition unit is used for recognizing thrown garbage and sending recognized information to the control unit; and the control unit is used for controlling the bag breaking unit, the sorting unit and the putting unit. According to the garbage can, bags can be broken automatically, garbage can be thrown in a classified mode, meanwhile, the overflow degree of the garbage can can be monitored, the time for people to conduct manual bag breaking and classification on perishable garbage is shortened, the garbage is correctly thrown into the designated garbage can in a classified mode, and the manpower and time cost for rear-end reclassification is reduced.

The utility model discloses a medical waste garbage disposal barrel. Comprising a disposal barrel body, a disposal cavity formed in the disposal barrel body, a discharging opening formed in the lower end of the disposal barrel body and communicating with the disposal cavity, a crushing assembly rotationally arranged at the bottom of the disposal cavity and used for crushing medical waste garbage, and a wear-resisting block arranged in the disposal cavity and surrounding the crushing assembly. The sealing block is arranged on the periphery of the disposal barrel body and is used for opening or sealing the discharge hole; the cooling nozzle is arranged at the upper end of the disposal cavity and is used for cooling the disposal cavity; the treatment barrel disclosed by the utility model integrates crushing and disinfecting functions, so that the medical waste garbage can be harmlessly treated in the equipment, the handover and transfer of the medical waste garbage are reduced, and the automation degree is high.

The utility model discloses a garbage recycling bin for municipal environmental protection engineering, and relates to the technical field of garbage recycling bins, the garbage recycling bin comprises a shell, and a disinfection mechanism is arranged in the shell; the disinfection mechanism comprises a disinfectant storage box arranged on the inner wall of the shell through a fixing rod, and a plurality of atomizing nozzles are arranged on the bottom surface of the disinfectant storage box and used for spraying out disinfectant; the disinfection mechanism further comprises a spraying and pressing assembly. According to the garbage recycling device, when garbage is thrown into the recycling box, opening of the inlet door can be in linkage with the transmission assembly, the pressing plate is pushed to be pressed downwards, then disinfectant in the disinfectant storage box is sprayed out through the atomization spray head under the action of the push rod and the piston head, the garbage which is just thrown into the recycling box is disinfected in time, manual intervention is not needed, and the environment is protected. And viruses and bacteria are effectively prevented from diffusing into the air due to runaway in the garbage treatment process, so that the public health safety level is improved.

The invention relates to the technical field of garbage collection and transportation trucks, in particular to a full-sealed intelligent unmanned household garbage collection and transportation truck which comprises a truck hopper and a rear cover, two symmetrically-distributed infrared sensors are arranged outside the truck hopper, a feeding device is installed on the truck hopper, and the feeding device comprises a first rotating rod, a turnover arm, an electric telescopic rod and a clamping jaw. And the side surface of the first rotating rod is fixedly connected with two symmetrically-distributed gears, the side surfaces of the gears are connected with first racks in an engaged mode, and the lower surfaces of the first racks are fixedly connected with inclined supporting plates. Through collaborative design of the feeding device, a gear and rack transmission structure and a sealing strip, breakthrough of sealing overflow prevention and automatic efficient operation in the whole garbage collection and transportation process is achieved, the problems of garbage scattering and odor overflow caused by untight sealing of a traditional collection and transportation vehicle are solved, secondary environmental pollution is effectively avoided, and the environment pollution is reduced. Flying dust and odor diffusion in the unloading process are avoided, and the environmental protection performance is further enhanced.

The utility model discloses a movable garbage can cleaning device, relates to the technical field of garbage can cleaning, and aims to solve the problems that the interiors of most existing garbage cans are cleaned regularly, the garbage cans cannot be cleaned in time after being dumped every time, and the garbage cans are extremely easy to stink and breed bacteria in high-temperature weather. According to the technical scheme, the device is characterized by comprising a mounting frame, a water tank is fixedly mounted on the upper surface of the mounting frame, an inner partition plate is fixedly connected to the middle of the interior of the water tank, cavities in the upper side and the lower side of the inner partition plate are provided with a clean water bin and a sewage bin respectively, and an air guide pipe is fixedly connected to the upper surface of the inner partition plate; the air inlet end of the air guide pipe is communicated with the upper end in the sewage bin, and the air outlet end of the air guide pipe is communicated with the upper end in the clear water bin. And the effects that the interior of the garbage can can be timely and conveniently cleaned after the garbage can is dumped every time, and stinking and bacterium breeding of the garbage can are avoided are achieved.

The utility model discloses an automatic disinfection garbage bin, which relates to the technical field of garbage bins, and comprises a bin body, the top of the bin body is rotatably connected with a cover plate, the cover plate is internally provided with a liquid storage tank, the interior of the liquid storage tank is fixedly connected with a connecting pipe, and the outer side of the connecting pipe is provided with a pressure pump. A liquid storage tank is fixedly connected with the interior of the cover plate, a pressure pump is fixedly connected with the interior of the liquid storage tank, a liquid spraying pipe is fixedly connected with the interior of the cover plate, a plurality of spraying heads are fixedly connected with the interior of the liquid spraying pipe, and one end of the connecting pipe is fixedly connected with the liquid spraying pipe. According to the garbage can, when garbage is put into the can body and the cover plate seals the can body, a booster pump is started through presetting of a control device, disinfectant in a liquid storage tank is conveyed into a liquid spraying pipe through a connecting pipe, and then the disinfectant is sprayed into the can body through a plurality of spraying heads, so that the put garbage is sterilized, and breeding of bacteria is inhibited.

The utility model discloses a garbage truck with a compression type garbage truck pushing return device, which comprises a truck body, two groups of storage boxes are clamped outside the truck body, the interiors of the storage boxes are fixedly communicated with two-way pipes, the bottom end of each two-way pipe extends into the corresponding storage box, and the bottom end of each two-way pipe extends into the corresponding storage box. The interiors of the two bi-pass pipes are jointly and fixedly communicated with a first connecting pipe, a water pump is fixedly installed on the upper surface of the vehicle body, the interior of the water pump is fixedly communicated with a water pumping pipe, the bottom of the water pumping pipe is fixedly communicated with the interior of the first connecting pipe, and the interior of the water pump is fixedly communicated with a discharging pipe. Through the arrangement of the vehicle body, the storage box, the two-way pipe, the first connecting pipe, the water pump, the water pumping pipe, the discharging pipe, the second connecting pipe, the concentric-square-shaped pipe and the spray head, certain liquid is stored in advance through the storage box, when the inner wall of the vehicle body needs to be cleaned, the water pump is started, and the two-way pipe, the concentric-square-shaped pipe and the like are used for conveying the liquid.

The utility model belongs to the technical field of building construction equipment, and discloses a building waste clearing and transporting device for building construction, which comprises a mobile vehicle, a loading box is detachably mounted on the mobile vehicle, a loading and unloading port is arranged at the top of the loading box, a box cover for plugging the loading and unloading port is arranged at the top of the loading box, and the box cover is detachably mounted on the loading box; a spraying bracket is fixedly mounted on the moving vehicle, a plurality of atomizing nozzles are arranged at the top of the spraying bracket, are positioned above the loading box, are positioned on at least one side of the loading box, are close to the loading box and are arranged towards the loading box; a water storage barrel is further fixedly installed on the moving vehicle, a water supply pressurizing mechanism is arranged between the atomizing nozzle and the water storage barrel, and the atomizing nozzle is communicated with the water storage barrel through the water supply pressurizing mechanism. According to the utility model, not only can larger dust be prevented from being generated during loading of broken stones and crushed sand, but also dust diffusion can be reduced.

The present invention discloses a waste treatment device and method for chest nursing, and its technical scheme is as follows: comprising a container barrel, the bottom of which is connected to a liquid storage component, and a filter component is installed between the two; the top of the container barrel is rotatably connected to a barrel cover, and a compression mechanism is installed on the barrel cover; wherein the container barrel comprises a first barrel body and a second barrel body which are sleeved together, and the compression mechanism can compress the waste placed in the second barrel body. The present invention can achieve solid-liquid separation and can compress waste; it solves the problem in the prior art that waste cannot be separated into solid and liquid when it is discarded in a trash can and the storage space is limited.

The utility model discloses a garbage bin with an insect expelling mechanism, and relates to the technical field of garbage bins, the garbage bin comprises a bin body, the top of the bin body is rotatably connected with a top cover, the top of the top cover is clamped with a transparent cover, the inside of the transparent cover is fixedly connected with a power grid, the inside of the transparent cover is fixedly connected with an insect trapping lamp, and the insect trapping lamp is fixedly connected with the top of the bin body. A rotating disc is rotatably connected to the interior of the top cover, two corresponding scraping plates are fixedly connected to the top of the rotating disc, the scraping plates are attached to the transparent cover and the power grid, a first internal groove is formed in the top cover, and a first transmission mechanism is arranged in the first internal groove; the winged insect collecting device has the advantages that the rotating disc, the first rotating shaft, the first worm gear, the second rotating shaft, the first worm and the first servo motor are matched with one another, two scraping plates can be driven to rotate in the transparent cover, and therefore winged insects are scraped into the collecting hopper through the inclined grooves, and workers can clean the winged insects conveniently.

The utility model discloses a waste collection nursing device for an operating room. The waste collection nursing device comprises a placing trolley, a waste liquid barrel and a waste barrel, the waste liquid barrel and the waste barrel are embedded in the two sides of the containing trolley respectively. A fixing plate is fixedly mounted above the middle part of the placing vehicle; one side of the fixing plate is fixedly connected with a placing groove; the waste liquid barrel and the waste barrel are both connected with turning covers for turning magnetic suction covering, and a first filter plate and a second filter plate are placed in the waste liquid barrel and the waste barrel respectively; the bottom of the waste liquid barrel and the bottom of the waste barrel are each provided with a liquid drainage pipe penetrating through the inside and the outside, and each liquid drainage pipe is provided with an on-off valve. The middle part of the filter plate I is fixedly connected with an injection pipe which is through up and down in the vertical direction, and the outer wall of the injection pipe is fixedly connected with a plurality of stirring rollers; according to the device, waste liquid can be primarily disinfected and subjected to peculiar smell elimination treatment, and the barrel opening of the barrel body can be opened, closed and normally opened in time according to needs; and the whole device can be conveniently transferred, and waste liquid and waste can be intensively discharged.

The invention discloses a method and system for cleaning dumped garbage in a dump pit, and the method comprises the steps: obtaining video data of a visual monitoring module for scanning an area behind a discharge door after the discharge door completes each time of discharge, generating a garbage accumulation three-dimensional model based on the video data, judging whether a residual garbage area exceeds a cleaning standard area or not, and if yes, judging whether the residual garbage area exceeds the cleaning standard area; and the compaction area and the dead angle area are recognized, if the garbage compaction degree is larger than the preset compaction degree, the auxiliary disturbance module is driven to loosen garbage in the compaction area, the lifting grabbing module is driven to grab the garbage from the compaction area and the dead angle area and transfer the garbage to a feeding port of the incinerator, and the current discharging task is completed till the residual garbage area reaches the standard. Therefore, the auxiliary disturbance module is used for loosening the garbage compaction area, the cleaning difficulty of compacted and caked garbage is reduced, then the opening and closing cutting edge of the angle-adjustable double-petal grab bucket of the lifting grabbing module is used for cutting in, the grabbing difficulty of garbage in the dead angle area is improved, and therefore the cleaning efficiency is improved.

The utility model discloses a medical waste treatment and collection device which comprises a collection box, a cover body is hinged to the upper end of the collection box, two supporting seats are symmetrically arranged in the collection box, a rotating column is movably arranged between the two supporting seats, the rotating column is rotationally connected with the collection box, a containing chamber is arranged on the rotating column, and a first motor is fixedly arranged on one side of the collection box. The driving end of the first motor extends into the collecting box to be fixedly connected with the rotating column, two smashing rollers are rotationally arranged in the collecting box, a rotating rod is arranged on one side of each smashing roller, one end of each rotating rod penetrates through the collecting box to be fixedly connected with a gear, the two gears are connected in a meshed mode, and a second motor is fixedly arranged on one side of the collecting box. And a first transmission belt structure is connected between the driving end of the second motor and one of the rotating rods, so that the interior of the collecting box is not communicated with the outside in the process of placing the medical wastes in the collecting box, peculiar smell and bacteria in the collecting box are prevented from leaking out, and serious pollution to a medical place is reduced.

A container assembly having a residential refuse bin washer system for a front load refuse collection vehicle, the container assembly including a base, a receptacle connected to the base and having side walls, a bottom wall and a drain, the drain being in fluid connection with at least one fluid tank, at least one spray conduit having a distal end extending above the bottom wall, the at least one spray conduit being in fluid connection with at least one fluid tank and at least one fluid pump, and a residential refuse bin lifter assembly, wherein the residential refuse bin lifter assembly is movable between a retracted rest position proximate one of the side walls of the receptacle and a raised and inverted position disposed above the receptacle. The disclosure includes the container assembly in combination with a front load refuse collection vehicle having a container assembly lift apparatus.

The invention discloses a garbage can capable of automatically discharging press-filtrate and a using method, and relates to the technical field of garbage pool press-filtrate discharging, the garbage can comprises a garbage can body, and a filter screen is arranged at the bottom of the inner side wall of the garbage can body; the flushing assembly is arranged on the inner side wall of the garbage can body, and the flushing assembly is arranged below the filter screen; the multiple fixing rods are circularly arranged on the outer side wall of the garbage can body at equal intervals; the control seat is arranged at the end parts of the plurality of fixing rods; and a connecting groove. In the working process of the flushing assembly, an annular plate is driven to rotate through a transmission assembly, a sealing block is driven to move along a connecting groove in the rotating process of the annular plate, after the sealing block is away from a connecting pipe, press filtrate in the dustbin body is output through the connecting pipe and an output assembly, and meanwhile, the flushing assembly works to flush a filter screen; the filter effect of the filter screen is prevented from being reduced due to long-time retention of press filtrate on the surface of the filter screen.

A docking station has an openable dirt collection region which, during an evacuation operation of the docking station, receives dirt that is transferred from a surface cleaning apparatus; and a lock having a locked position in which the dirt collection region is secured in a closed position, and an unlocked position in which the dirt collection region is openable. During the evacuation operation, the lock is inhibited from moving to the unlocked position.

The invention relates to the technical field of garbage collection and transportation, in particular to electric garbage collection and transportation equipment which comprises a main vehicle body and a carrying carriage installed on the main vehicle body, an electric control type rear closing cover plate is installed at the position of an opening in the rear side of the carrying carriage, and electric control lateral closing cover plates used for closing lateral operation openings are hinged to the two sides of the carrying carriage. According to the electric garbage cleaning and transporting equipment, openings are formed in the rear side and the two sides of the carrying carriage correspondingly, an internal storage box can be loaded, unloaded and replaced through the opening in the rear side, an external garbage can can be operated through lateral operation openings in the two sides, and according to the garbage treatment mode of the electric garbage cleaning and transporting equipment, the whole garbage can can be replaced; the garbage can can be dumped, and the operation means are more diversified; and an embedded water collecting tank is installed in the carrying carriage, a pull-out type handheld spray gun is installed on the outer wall of the carrying carriage, the garbage can and the surrounding environment can be washed in a manual spray washing mode, and the sanitation degree of the garbage can is greatly improved.

The application discloses a kind of laboratory garbage can killing sterilization device, including barrel and barrel cover, the inner wall of barrel is close to the port and is provided with ring shell, the inner wall of ring shell is provided with circumferentially arranged exhaust hole.The laboratory garbage can killing sterilization device provided by the application, by covering the barrel cover, the piston air extraction is carried out, the outside air has the function of supplementing into the garbage can, reduces the emission of dirt in the garbage bag to the air, improves the internal circulation;open the barrel cover, the piston exhaust is carried out, the air originally extracted in the ring shell is quickly sprayed from the obliquely arranged exhaust hole, so that the air blows in the garbage bag, avoids the emission of dirt in the garbage bag to the outside, and the airflow flowing on the port of garbage bag can cover and intercept the dirt in the garbage bag, forms airflow layer and isolates the dirt in the garbage bag, effectively avoids the leakage of dirt in the garbage bag during the opening process of garbage can, increases the safety of laboratory.