358results about How to "Realize automatic recycling" patented technology

The invention discloses a sprinkler wagon self-walking type reel sprinkler and a using method thereof. The sprinkler wagon self-walking type reel sprinkler comprises a chassis (1), a reel (2), a PE pipe (3), a water turbine case (4), a reel driving gearbox (5) and a sprinkler wagon (6). The sprinkler wagon comprises a power source (63), a sprinkler wagon driving gearbox (64), a control valve set (67) and a water tank (68). The input end of the control valve set (67) is connected with the output end of the PE pipe (3). One path of the output end of the control valve set (67) is connected with a sprinkler (66) through a pipeline, and the other path of the output end of the control valve set (67) is connected with the water tank (68). The lower portion of the water tank (68) is further provided with a stop valve V (681). According to the sprinkler wagon self-walking type reel sprinkler, the weight of the sprinkler wagon is changed by changing the water storage amount of the water tank, and the unreeling resistance of the PE pipe can be lowered during unreeling of the PE pipe on the premise that enough road grabbing capacity generated by the sprinkler wagon pulls the PE pipe for self-walking.

The invention discloses a system and method for automatic matching and remote centralized interpretation of intelligent channels for travel inspection, and the system comprises an automatic matching and remote centralized interpretation system AMRSS and an automatic basket returning system ABRS that are connected together. The method, by matching uniquely identification tag of the facial feature information and the tray, achieves accurate matching of passenger information, identification tags and image information, realizes the automatic recheck of suspicious luggage and reduces the labor intensity of the security inspectors. Through the design and allocation of multiple basket taking stages, interpretation of multiple operators and recheck of multiple openers, the efficiency of security inspection is improved, the number of passengers and the waiting time of passengers can be predicted, and the waiting time of passengers can be reduced. The cooperation of the automatic matching and remote centralized interpretation system and the automatic transmission subsystem for the travel inspection completes the jobs of people-baggage correspondence, centralized interpretation, baggage sorting and tray recycling, improves the pass rate of passengers in the travel inspection channels, realizes the management of people-baggage correspondence, and reduces the labor intensity of security inspectors.

The invention discloses a floating object on water cleaning device and a cleaning method thereof, and belongs to environmental protection devices. The floating object on water cleaning devicecomprisesabasic assembly, a collection assembly, a cleaning assembly, and a fixingassembly;the base assembly comprises a water flow passage between hulls, a filter screen arranged on the water flow passage, and floating fencesarranged on the outer sides of the hulls; the collecting assembly comprises a first servo motor, rotating bladesconnected with the first servo motor through a transmission assembly; the cleaning assembly comprises a threaded rollerconnected with the first servo motor; and the fixing assembly comprises a plurality of retractable anchors at the bottoms of the hulls. According to thefloating object on water cleaning device and the cleaning method thereof,a cleaning device is fixed in a narrow water area by the retractable anchors and a fixing cable, garbage is gathered and collected by utilizing the fluidity of the water flow in the water area; or the collecting device is driven by a tractor boat to be inan S-shaped reciprocating motionina contaminated area, the gathering and collection of the garbage are achieved,and the problem of floating garbage cleaning in small water areas is solved.

The invention discloses refrigerant recovery method and device of an air conditioner, wherein the method comprises the following steps that in the refrigerant recovery mode of the air conditioner, the air conditioner is controlled to carry out refrigeration; when the air conditioner carries out refrigeration, a refrigerant is stored in a condenser of an outdoor unit of the air conditioner after being absorbed from an evaporator of an indoor unit of the air conditioner and a connecting tube through a compressor of the air conditioner, wherein the evaporator is arranged at the air absorption end of the compressor, and the condenser is arranged at the exhaust end of the compressor; and an electronic expansion valve is controlled to close, wherein the electronic expansion valve is arranged on a connecting pipeline between the condenser and the evaporator. The refrigerant recovery method and device solve the technical problem that recovery is inaccurate caused by refrigerant recovery of the air conditioner by manual operation.

The invention discloses an air conditioner and a recycling method for air conditioner refrigerant. The air conditioner comprises a compressor, a four-way valve, a condenser, a throttling element, an evaporator, a high-pressure stop valve, a low-pressure stop valve, a first control device, a second control device and a controller, wherein the high-pressure stop valve and the low-pressure stop valve are arranged on a first circulating channel and a second circulating channel in series respectively, the first control device is arranged on the first circulating channel in series in order to open or close the first circulating channel, and the second control device is arranged on the second circulating channel in series in order to open or close the second circulating channel. According to the air conditioner and the recycling method for the air conditioner refrigerant, due to the fact that the first control device and the second control device are arranged, when the refrigerant needs to be recycled, by controlling the actions of the first control device and the second control device, the purpose of automatically recycling the refrigerant in the air conditioner into an outdoor unit is achieved, it is guaranteed that the refrigerant does not exist in an indoor unit, and therefore the safety of indoor environment is improved.

The invention discloses a waste gas purification apparatus, comprising a base (1), a first dust arresting unit (2), an air cylinder unit (3), a frame body unit (4), a heating unit (6), a first filtering unit (5), a second dust arresting unit (7), an air inlet unit (8) and a second filtering unit (9), wherein the frame body unit (4) comprises an upper frame body (41), a lower frame body (42), a first support bar (43), a second support bar (44), a first locating bar (45), a first through hole (46), a bending part (47), a filter plate (48) and a first inclined plate (49), and the air cylinder unit (3) comprises a first air cylinder (31), a first pushing bar (32) and a filter cake (33). The waste gas purification apparatus can separate dust in the air and automatically collect the separated dust, so the environment is protected and manual dedusting workload is reduced.

The invention discloses an intelligent second-hand book recovering machine. The intelligent second-hand book recovering machine comprises a machine body, a control module, a conveying recognition component and a book storage component, wherein an axial flow fan is installed at the top of the machine body, a touch screen is installed on the front side of the machine body, a book recovery inlet is formed in the front side of the machine body and is located above a conveyor belt, a book taking cabin door is installed on the side face of the machine body, and universal wheels are installed at the bottom of the machine body. The conveying recognition component comprises a conveying belt, code scanners, pressure sensors, side face fixing baffles, an end face movable baffle, a motor I, a second II and a motor III. The book storage component includes a book supporting plate I, a book supporting plate II, compression springs and fixing pins. The intelligent second-hand book recovering machine is provided with the control module, the motor I, the second II, the motor III, the pressure sensors, the code scanners and the touch screen, brings great convenience to full-automatic second-hand book recovery and user money payment, is simple in structure, reliable in function and high in intelligence degree and can be widely popularized and applied.

The invention discloses a blood sample inspection pipeline and method and sample discharging devices. The blood sample inspection pipeline includes a sorting mechanism, a centrifugation and cover opening mechanism, and the plurality of sample discharging devices. The sorting mechanism inserts blood collection tubes for blood sample testing into a test tube seat, identifies the characteristic information of the blood collection tubes, and sends the test tube seat with the blood collection tubes to a pre-centrifugation channel or a whole blood channel according to the characteristic information.The centrifugation and cover opening mechanism performs blood sample centrifugation on the blood collection tubes sent from the pre-centrifugation channel, opens covers of the blood collection tubesafter the blood sample centrifugation, and sends the blood collection tubes with the covers opened to a post-centrifugation channel. The sample discharging devices determine blood sample test items ofthe blood collection tubes and corresponding inspection devices according to the characteristic information of the blood collection tubes, and load the blood collection tubes to corresponding trays.The sorting mechanism of the blood sample inspection pipeline scans the characteristic information of the blood collection tubes, classifies, sorts, inspects, and transports the blood collection tubesto realize automatic inspection and management of blood samples, thereby reducing labor cost and improving production efficiency.

The invention provides a method and a device for processing a business in a business system. The method includes the steps: judging whether parameter files currently used by a first plug-in for processing the business are in the latest version or not by a node for processing the business in the business system, and updating the parameter files into the parameter files in the latest version if not; adding version information of the parameter files in processing into a processing result of a previous plug-in, processing the corresponding parameter files according to the received version information carried by the processing result when a next plug-in processes the business, and processing the parameter files in the same version in the processing course of the same business. Business exception caused by version change of the parameter files can be avoided, and rapid production of a new business system and seamless connection between the new system and an old system are facilitated.

The invention discloses a water saving system for a water heater. The water saving system comprises a water storage tank, a control cabinet, a temperature sensing element, a first electromagnetic valve, a second electromagnetic valve and a first negative pressure water suction mechanism. A first connecting position, a second connecting position and a third connecting position are sequentially arranged on a hot water pipe in the water outlet direction. The first negative pressure water suction mechanism is arranged on the first connecting position, and a negative pressure opening of the first negative pressure water suction mechanism is connected with the water storage tank through a first negative pressure pipe. The temperature sensing element is arranged at the second connecting position, the second connecting position leads a water storage pipe to the water storage tank, and the first electromagnetic valve is arranged on the water storage pipe. The second electromagnetic valve is arranged on the third connecting position, and the temperature sensing element, the first electromagnetic valve and the second electromagnetic valve are electrically connected with a control end of the control cabinet. The water saving system is simple in overall structure and high in automation degree, collected cold water automatically flows back to the hot water pipe to be output according to the negative pressure principle instead of being pumped back to the water heater, and the water saving system is suitable for water heaters of various existing types and is very easy and convenient to assemble and apply.

The invention relates to the technical field of tobacco-baking equipment, in particular to a heating piece tobacco baking chamber for waste heat recycling. The heating piece tobacco baking chamber for waste heat recycling comprises a tobacco baking room provided with two tobacco hanging racks, each tobacco hanging rack comprises vertically arranged vertical rods and transversely arranged transverse rods, and the lower portions of the vertical rods are provided with supporting feet; the transverse rods are provided with tobacco clamps; the two tobacco hanging racks are arranged side by side; the tobacco baking room further comprises heating piece devices arranged on walls. One side of the tobacco baking room is further provided with waste heat recycling equipment. By means of the heating piece tobacco baking chamber, tobacco baking efficiency and quality are remarkably improved; hot air emitted by the heating piece devices is utilized to conduct baking, the heating piece devices are utilized, no additional heating device is needed, and the cost of the additional heating device is omitted; besides, the heating piece devices are small in size, space is saved, and the tobacco leaves can be baked effectively.

The invention relates to a sanitary towel package sealing machine for the fully automatic sealing of sanitary towel packages and a sealing method. The sealing machine comprises a frame, a gas circuit and a control device. A package passageway is positioned on the work surface of the frame and provided with a cross-shaped groove, a rodless cylinder advancing mechanism is positioned on the frame andthe rodless cylinder drives a pusher to make a reciprocating movement along the front part of the cross-shaped groove, a downlink cylinder working mechanism is positioned in a door frame above the cr oss-shaped groove and a hot melt pressure head and a cutting knife are arranged at the bottom of the downlink cylinder, an uplink cylinder working mechanism opposite to the downlink cylinder working mechanism is positioned under the work surface of the frame and a bottom plate is arranged on the end surface of an uplink cylinder piston, a pneumatic exhaust spacing mechanism is positioned on the frame and above the package passageway, and a pneumatic pulling mechanism is positioned on the frame at the back part of the package passageway.

The invention relates to a test machine for service life of a valve core of a water heating product. The test machine comprises a test device, a water supply system, a programmable logic controller and a computer, wherein the test device is used for fixing a tested product and driving the tested product to repeatedly perform various water-discharging actions; the test machine is characterized in that the water supply system comprises a cold water circulation system and a hot water circulation system; each of the cold and hot water circulation systems comprises a water tank, a conveying pump, a frequency converter, a recycling tank, a recycling pump and a pressure sensor; a refrigerating device is arranged on the water tank of the cold water circulation system; a heating device is arranged on the water tank of the hot water circulation system; and the programmable logic controller is respectively connected with the frequency converter, a pressure sensor, the refrigerating device, the heating device and a temperature sensor and is used for controlling all the devices to coordinately work. The test machine provided by the invention has the advantages of convenience in operation, energy conservation, high test precision, and the like.

The invention relates to the technical field of indoor wall painting equipment, in particular to indoor wall painting equipment based on lead screw movement. A servo motor drives a first rotating shaft, so that a first bevel gear rotates, a second bevel gear drives a screw rod to rotate, and a moving nut is driven by the screw rod and guided by a guide rod to move along the screw rod. The servo motor is controlled to periodically rotate forwards and backwards to realize the up and down movement of the moving nut, so that a connecting rod carries a paint brushing assembly to move up and down, the right part of a roller abuts against the wall, the roller rotates automatically when the paint brushing assembly moves up and down, and a sponge layer with paint makes contact with the wall to brush paint conveniently and quickly; a pumping drainage assembly is further arranged, and the first rotating shaft rotates to realize the work of sucking paint from a paint barrel and then conveying thepaint from a piston barrel to a paint inlet cavity; while a second rotating shaft rotates, a third rotating shaft rotates, the bottom paint flows upwards through spiral blades, and the paint is stirred by a stirring rod, so that the paint is uniform without settlement.

The invention discloses a gas expansion device closure test system and test method. The basic operation process of the system includes that the gas working medium of a low pressure gas storage tank is compressed to raise pressure through a gas compression device, the gas working medium enters a high pressure gas storage tank, the high pressure gas is regulated to drive a gas expansion device to be tested to meet test conditions, the high pressure gas expands, the pressure goes down, the gas enters the low pressure gas storage tank, and one circle is completed; the gas expansion device to be tested is connected to a dynamometer through a gearbox, the rotating speed control and power measurement are implemented, pressure, temperature and vibration sensors measure the inlet, outlet and internal pressure, temperature distribution and rotor vibration parameters of the gas expansion device as required, and the test development and performance detection of the gas expansion device can be implemented. The inlet and outlet pressure control, rotating speed control and long-term continuous operation of the gas expansion device can be implemented easily; in addition, owing to the closure teat system, the working medium can be complex one, single one, flammable one, explosive one or toxic one; the system has the advantages of simple operation, low operation cost and wide application range.

The invention discloses a liquid supply device. The device comprises a liquid faucet, a central controller and a liquid pipeline. The liquid faucet comprises a main part and a support. The main part is provided with a liquid outlet. The support is provided with a guide pipe communicating with the liquid outlet. The liquid pipeline comprises a transmission pipe, an electric pump and an electrical valve. The transmission pipe is connected to the guide pipe of the support of the liquid faucet. The electric pump and the electrical valve are arranged on the transmission pipe. The electric pump provides liquid transmission power for the liquid pipeline, and the electrical valve serves as a switch of the liquid pipeline. The central controller controls the electric pump and the electrical valve on the liquid pipeline according to a user instruction, and liquid outputting or liquid outputting stopping is achieved. Compared with the prior art, in the technical scheme, quantitative liquid outputting, automatic residual liquid recycling, automatic cleaning and other multifunctional effects can be achieved, the liquid supply device can be matched with a mobile control terminal as well to achieve non-contact and long-distance control over the liquid supply device, and a control manner is more convenient and flexible.

The invention relates to a continuous metallurgical composite production process for copper-clad aluminum rows. The process comprises a pretreatment step, a continuous coating step, a welding step, acontinuous rolling step, an on-line automatic monitoring step and a diffusion heat treatment step, thereby achieving the following technical effects of: (1) ensuring full uniform combination of coppersheets and aluminum rows, as well as uniform thickness of copper coating; and (2) greatly improving finished-product rate and ensuring yield and quality. Therefore, the production process solves theproblem of producing the copper-clad aluminum rows with various specifications, is particularly applicable to the manufacture of large-size copper-clad aluminum rows, and has huge economic benefit.

The invention belongs to the technical field of mechanical equipment, provides a wrap yarn machine and solves the problem of low efficiency resulted from manual clearing and recovering of existing waste yarns. The wrap yarn machine comprises a frame, a waste yarn plate is fixedly connected to the lower portion of the frame, a recovery pipe is rotatably connected onto a moving seat which is connected with the frame, the outer side wall of the recovery pipe is provided with a plurality of air suction holes, and the recovery pipe is connected with an air pump. A driving mechanism and a discharging mechanism are arranged on the frame, an oil storage tank and an oil return tank are fixedly connected onto the end face of one end of the frame, the bottom face of the oil storage tank is provided with a plurality of oil dripping holes, a seal cover plate is vertically and slidably connected in the oil storage tank, and a tensioning part is arranged between the seal cover plate and the oil storage tank. The power mechanism is arranged on the frame, the oil return tank is communicated with the oil storage tank, and a booster pump is arranged on an oil return pipe. The wrap yarn machine realizes automatic concentrated recovery of waste yarns and is high in automation degree.

The invention relates to the field of building concrete building block treatment equipment, and specifically discloses a waste recycling device for a building concrete building block. The waste recycling device comprises a conveying material path, a conveying device, a crushing device, a screening device, a carrying device, an unloading conveyor belt and a collecting trolley, wherein the conveyingmaterial path, the screening device and the unloading conveyor belt are arranged along a straight line; the conveying material path is of a hollow structure; a charging hopper which communicates withthe inner part of the conveying material path is arranged on the top of the conveying material path; the conveying device is mounted on the end part of one end of the conveying material path; a mounting housing is arranged on a position, beside the charging hopper, on the conveying material path; the crushing device is mounted on the mounting housing; the bottom of the conveying material path isequipped with four first supporting pins which are distributed in the form of a rectangle; the carrying device is positioned above the screening device; and the collecting trolley is positioned besidethe unloading conveyor belt. The waste recycling device can crush the building concrete building block, and further can automatically recycle metal in the building concrete building block.

The invention discloses a traffic road cone recycling and placing control system. The system comprises a controller, a drive device, a detection device and a man-machine interaction device, wherein the drive device, the detection device and the man-machine interaction device are electrically connected with the controller. The drive device comprises a storage tray motor used for driving a storage tray to rotate, a sliding rail motor used for driving a rotary arm to move linearly, a rotary arm motor used for driving the rotary arm to rotate relative to a sliding rail, an electromagnet used for attracting road cones and a turning board motor used for controlling a turning board to rotate so as to recycle the road cones on a road surface. The detection device comprises a vehicle speed sensor used for detecting the vehicle speed, a proximity switch used for detecting the position of the storage tray, a rotary encoder used for detecting the rotating angle of the rotary arm, first limit switches, a microswitch, a second limit switch used for detecting whether the turning board is turned in position and a pressure sensor used for detecting whether the rotary arm attracts the road cones or not. By the adoption of the traffic road cone recycling and placing control system, the accuracy of the placing and recycling processes is guaranteed, and meanwhile manual operation is reduced.

The invention provides a luggage security check system and method, and belongs to the field of security and protection. The system comprises an information acquisition unit, an information processingunit, a luggage security check subsystem and a tray conveying subsystem; the information acquisition unit is used for acquiring passenger information and tray numbers; the information processing unitis used for storing data, binding and unbinding passenger information and tray numbers, generating a conveying instruction and sending the conveying instruction to the tray conveying subsystem; the luggage security check subsystem is used for carrying out X-ray perspective check and marking on luggage and sending a luggage X-ray image and a luggage marking result to the information processing unit; and the tray conveying subsystem is used for receiving the conveying instruction and completing a conveying action corresponding to the conveying instruction. According to the invention, the workload is reduced; automatic baggage sorting, automatic abnormal baggage re-inspection and automatic baggage tray delivery and recycling are realized, and passenger information and baggage security inspection results are bound and recorded.

The invention discloses double-station battery feeding equipment. The double-station battery feeding equipment includes a base, and further includes a left translation feeding device, a left jacking feeding device, a left tray lifting device, a left tray recycling device, a suction positioning device, a right translation feeding device, a right jacking feeding device, a right tray lifting device and a right tray recycling device which are fixed to the base; and the left translation feeding device, the left jacking feeding device, the left tray lifting device, the left tray recycling device andthe right translation feeding device, the right jacking feeding device, the right tray lifting device and the right tray recycling device are arranged symmetrically on the both sides of the suction positioning device. The double-station battery feeding equipment has the beneficial effects that the structure is reasonable, a tray alignment mechanism is arranged, trays are prevented from being misaligned due to sliding during transmission, the accuracy during battery conveying is improved, a positioning feeding mechanism is provided with a positioning module, the position accuracy is high, automatic conveying of the trays and automatic recycling of empty trays are realized, and the degree of automation is high.

The invention relates to a connector rotation docking automatic shedding recovery device comprising a rotary arm; the rotary arm is fixedly provided with a cylinder; the cylinder telescopes to push the rotary arm to rotate; the recovery device also comprises a lifting platform capable of moving up and down along the rotary arm; a connector docking mechanism is arranged on the upper portion of the lifting platform, and capable of doing horizontal linear motions relative to the lifting platform or rotating in the horizontal plane, and is provided with a connecting plate; the connecting plate can do horizontal linear motions on the connector docking mechanism. The connector rotation docking automatic shedding recovery device can safely and reliably drive the connector to do posture adjusting and aiming before arrow alignment, and can realize adaptive follow-up and automatic shedding recovery after arrow alignment.

The invention discloses a water treatment device and method for synchronously realizing filtering and back washing. A filtering tank is installed on a supporting support, and the device is characterized in that the lower part of the filtering tank is connected with a water inlet tube and a water distribution device; a sand distribution device is arranged below the water distribution device; filter materials are placed in the filtering tank; a water outlet groove and a water discharge tube are arranged on the upper part of the filtering tank; a sand storage hopper is arranged at the bottom of the filtering tank; the sand storage hopper is externally connected with a sand transportation tube and a sand extraction pump; a back washing chamber is installed on the upper part of the filtering tank; the sand transportation tube is connected with the back washing chamber; sand-water separation is carried out on back washing water and inlet gas, clean sand enters a sand cleaning chamber and falls down a filter material layer; and separated back washing sewage is discharged out of the filtering tank from a back washing tube. A mode that waste water flows upwards is adopted, the filter material with the maximum sewage cutting amount in the filtering tank is located on the lower part of the whole filtering layer, sand in a lower layer falls down, replacement and changing are convenient through sand lifting, filtering and back washing can be synchronously operated, continuous operation of a filtering device is achieved, filtering layer sewage cutting capacity and work efficiency are improved, and the energy consumption and cost are reduced.

The invention relates to pulse power techniques, in particular to an armature-reusable electromagnetic coil emitter and an emitting method. The emitter comprises a multi-stage coil, an armature, a load, a connector, an emitting canister, an adapter, a head reducer, a tail reducer and a drive circuit. The emitting method includes the steps that during the initial stage, the armature and the load are connected through the connector; when the coil is energized, the armature is subjected to electrodynamic force after current is induced, the load is pushed to move in the emitting canister, when thearmature reaches the maximum speed, the connector is disconnected, the armature is separated from the load, the load flies out of the emitting canister at the maximum speed, and the armature is decelerated by the drag force of the armature; if the armature speed is positive, the armature automatically falls to a tail part after hitting the head reducer, the recovery of the armature is realized; if the armature reaches the reverse speed, the armature hits the tail reducer to stop; the recovery of the armature is also achieved; and then the load is added for the next emitting. This method can realize the recovery and reuse of the armature.

The invention relates to a golf ball returning device and relates to a golf device. The golf device comprises an installing box body, a ball inductor, a control circuit board, a ball support soft tube and a lifting mechanism, wherein a soft tube through hole is formed in the upper surface of the installing box body, the ball support soft tube is arranged in the soft tube through hole of the installing box body, the upper surface of the installing box body is further provided with an induction through hole, the lifting mechanism comprises a sliding seat, a sliding rail, a sliding seat lifting motor and a synchronous belt, wherein the sliding seat is connected with the bottom end of the ball support soft tube, the sliding rail is positioned in the installing box body, the sliding seat is positioned on the sliding rail, one side of the upper end of the sliding rail is provided with a ball conveying hole channel, the front side of the ball conveying hole channel is provided with a lifting rotating disk, a rotating disk motor is arranged under the lifting rotating disk, and the ball inductor, the sliding seat lifting motor and the rotating disk motor are electrically connected with the control circuit board. The golf ball returning device has the advantages that the structure is simple, the installation is convenient, the cost is low, the operation is reliable, the actions of ball returning and sending can be completed automatically, the intelligence and the automation are achieved, and the manual labor is reduced.

The invention provides an intelligent cleaning system, an autonomous robot and a base station. The autonomous robot is configured to execute a cleaning function and an emptying function, and comprisesa first accommodating part and a suction device which can be communicated with the first accommodating part through a first air duct and is configured to generate an air flow with a suction effect. The base station is in butt joint with the autonomous robot so as to empty and collect the target object from the first accommodating part and comprises a second accommodating part, a second air duct and a third air duct, wherein the second air duct and the third air duct are communicated with the second accommodating part separately, under the state that the autonomous robot and the base station are in butt joint in place to execute the emptying function, the first air duct is cut off, and the suction device communicates with the first accommodating part through the second air duct, the secondaccommodating part and the third air duct. According to the intelligent cleaning system, the autonomous robot and the base station, automatic garbage collection can be achieved, the user experience is improved, only one suction device is needed, cost and installation space can be saved, and the base station is compact in structure.