32results about How to "Improve filtration and purification efficiency" patented technology

The invention discloses a composition of an air-conditioning filtering net material with function of improving negative ions and radon, a preparation process method and application. The net material has functions of benefiting human health and protecting the environment by clearing the air, removing bacteria, increasing negative ions, improving radon content and the like. The net material can be machined into the air-conditioning filtering net material with health and environmental protection functions, an air purifier, a dust collector net material and a transportation tool filtering net material. The material has the characteristics of simple preparation process, little energy consumption, low manufacturing cost, convenient use, high efficiency, environmental protection and the like.

The invention relates to an air purifier of bank air conditioner, especially a plate purifier formed by filter network and multilayer adsorption materials, while it can filter and purify the air entered into indoor machine via bottom wind inlet, wherein the purifier is inserted into the sliding groove formed by the fixing elements on the upper parts of two side walls of bottom wind inlets of base; the front parts of two side walls are higher than back parts, to make the top surface of side wall incline from the open of wind inlet towards to the inner wall; the upper part of each side wall of wind inlet, along the side edge of incline top, two couples of fixing elements are fixed to form sliding groove; the connecting line of sliding groove is parallel with the side wall top; two edges of purifier are inserted into the sliding groove. The plane of purifier is vertical to the wind inlet direction of bottom wind inlet, and the outlet direction of purified air is toward to the eccentric fan, to improve the purify efficiency and improve the air circulation.

The invention discloses an urban sewage purification device. The device comprises a filter box, a purification box and a medicament box, a sewage pipeline is arranged at a position, close to one sideedge, of the top of the filter box, a first motor is mounted at the top of the filter box, a rotating shaft is arranged at the bottom of the first motor, the bottom end of the rotating shaft extends into the filter box, a first rotating rod is welded to the bottom end of the rotating shaft, and a plurality of spiral blades are welded to the outer surface of the first rotating rod in the vertical direction at equal intervals. Sewage is pumped into the filter box through a sewage pipeline, and passes through an impurity filter screen, so when the sewage is conveyed, impurities in the sewage canbe well filtered out; and when some impurities in the filterbox are discharged, a sealing cover is uncovered, the first motor is started to make the first rotating rod drive the plurality of spiral blades to rotate, and the impurities in the filter box can be well discharged by a dirt discharge pipeline through the spiral blades.

A high-efficiency and environment-friendly sewage treatment and filtration system, comprising a frame body, a water inlet device, a cleaning device, a first filter device, a second filter device, and a third filter device, and the frame body is provided with a first through hole and a second through hole , the third through hole, the slider, the water outlet pipe, the first valve, the water inlet device includes the water inlet pipe, the water pump, and the second valve, and the cleaning device includes the electric cylinder, the fixed block, the push rod, the moving rod, the moving frame, the positioning rod, Moving plate, bristle, first spring, the first filter device includes sponge block, first filter screen, support block, second spring, the second filter device includes inclined plate, limit block, second filter screen, third filter screen, The third filter device includes a first horizontal plate, a fourth filter net, a fifth filter net, a second horizontal plate, a connecting pipe, and a sixth filter net. The invention can quickly and effectively filter the sewage, has high filtration efficiency, and can prevent impurities in the sewage from clogging the filter net, so that the filtration can be carried out smoothly.

The invention relates to the field of air purification, and discloses an air purifier. A water tank is formed in the bottom of the cavity of the air purifier, a barrier wall which downwards extends into the water tank is formed between an air inlet and an air outlet, thus, an air inlet channel is formed between the air inlet and the water tank, an air outlet channel is formed between the water tank and the air outlet, the barrier wall is provided with a jet flow seam which is positioned below the liquid level of the water tank, and the jet flow seam is shrinking flow channel from the air inletchannel to the air outlet channel. The jet flow seam is in the design of the shrinking flow channel, air flows into the shrinking flow channel from the air inlet channel, the sectional dimension of aflowing path is suddenly reduced, and air flow is accelerated for the first time; and when air flows through the jet flow seam, the sectional dimension is further reduced, the air flow is acceleratedagain, after the air flow is accelerated twice, water-air mixing adequacy is also increased, and the air filtering and purifying efficiency is improved.

The drinking water machine with high pressure water filtering purifier includes one water purifying tub, one casing, one heater on the casing and one bracket. The water purifying tub includes one tub body with water guide pipe and air guide pipe, and one tub cover with water inlet. The drinking water machine has also one cold water tube connected through the heater to the water guide pipe, sealing rings, one high pressure air bottle connected to the air guide pipe, one membrane filter and one flush valve. The membrane filter is used in filtering water at high pressure in high purifying effect. The water filtering purifier has simple structure and easy cleaning.

The invention discloses a domestic sewage filtering and recycling integrated device, and the device comprises a sewage filtering device, wherein the sewage filtering device comprises a filtering tank, a standing box, a gravel filtering layer, an activated carbon filtering layer and a biochemical filtering layer, the filtering tank is fixedly connected to the top of one side of the standing box, the gravel filtering layer is installed in the filtering tank, the activated carbon filter layer is installed below the gravel filter layer, the biochemical filter layer is installed below the activated carbon filter layer, and a water outlet is formed in the end, away from the filter tank, of the standing box; a garbage filtering device which comprises connecting belts, a filter screen, guide wheels and a discharging plate, wherein the two connecting belts are fixedly connected to the two sides of the filter screen, the connecting belts and the filter screen are arranged between the two guide wheels in a sleeving mode, the two ends of the two guide wheels are rotationally connected to the side wall of the filtering tank, and a discharging opening is formed in the side wall of the filtering tank. According to the invention, a plurality of sewage treatment steps are simultaneously carried out, so that the sewage filtering and purifying efficiency is improved.

The invention discloses an atmospheric haze pollution monitoring and governance device for environmental governance. The atmospheric haze pollution monitoring and governance device comprises supporting vertical columns and an equipment compartment, an equipment compartment partition plate is arranged in the middle of the equipment compartment, the equipment compartment is divided into an upper part and a lower part by the equipment compartment partition plate, a purification compartment is arranged inside the position, below the equipment compartment partition plate, of the supporting verticalcolumns, the right end of the purification compartment is provided with a purification opening, the purification opening penetrates through the right side wall of the equipment compartment to communicate with the purification compartment, and a monitoring mechanism is mounted above the equipment compartment partition plate through fixing blocks. The atmospheric haze pollution monitoring and governance device has the key points of technical scheme that through symmetric structure design inside the monitoring mechanism, air in all directions on the outer side of the equipment compartment is evenly collected, measured deviation caused by pollution gathering is avoided, and the accuracy of air pollution monitoring is effectively improved; and gas entering from the purification opening is preliminarily heated through the purification compartment, multi-stage filtration and adsorption are conducted, the split motion ratio is further increased through heating, the filtration and purificationefficiency is improved, and haze is removed efficiently.

The invention discloses a lubricating oil purifying device. The device comprises a purifying tank, liquid conveying tubes are arranged on the purifying tank, a filter tube is arranged on every liquid conveying tube, filter screens are arranged in every filter tube, and a filter membrane is arranged on every filter screen; and an illuminating lamp is arranged at the end portion of the purifying tank, the illuminating lamp is arranged on a seat cushion, and the seat cushion is arranged at the end portion of the purifying tank; and filter screen racks are arranged in the purifying tank. Lubricating oil to be treated is respectively poured into the filter tubes, and goes through the filter screen to realize filtration treatment of the lubricating oil, so the purity of the lubricating oil is greatly improved.

The invention discloses a cooling water pipeline filtering device which comprises a filter screen assembly and a magnetic attraction assembly. The filter screen assembly comprises solid parts and filter screen parts which are fixed with each other, the filter screen parts are arranged at the upper right end and the lower left end, and the solid parts are arranged at the lower right end and the upper left end; two filter screen plates arranged in parallel are fixedly connected in the inner cavity of the filter screen assembly, inserting holes are formed in the filter screen plates, and the twofilter screen plates sequentially divide the inner cavity of the filter screen assembly into a fine filter cavity, a middle filter cavity and a coarse filter cavity. The structure of the magnetic attraction assembly is formed by buckling and assembling the circular magnet rings one by one, the filtering effect is better, the device is easy to disassemble, assemble and clean, the structure is simple, the cost is low, operation is convenient, the filter screen cannot be blocked and the cleaning process is simplified.

The invention relates to a sponge combination system applicable to old communities and a rainwater treatment method of the sponge combination system. The sponge combination system comprises a rainwater tank, a stone cage and a rainwater garden, a water inlet of the rainwater tank is communicated with community roof rainwater through a rainwater pipe, a drainage opening of the rainwater tank is communicated with the stone cage through a drainage pipeline, and the stone cage is communicated with the rainwater garden; the rainwater garden is internally provided with an overflow well, and is communicated with an underground municipal pipe network through the overflow well. The sponge combination system applicable to the old communities and the rainwater treatment method of the sponge combination system have the advantages that different rainfall sponge treatment measures are combined into the system, the filtering and collecting capacity of rainwater can be drastically strengthened, the sponge combination system is modularized, construction is facilitated, the reconstruction cycle is short, and the cost is saved.

The invention relates to an automatic detection device of a vacuum oil filter for fire resistant oil. The automatic detection device comprises a coarse filter, an electric heater, an oil temperature controller, a humidity sensor, a pressure detector, a vacuum tank, a vacuum pump and a vacuum regulating valve, wherein the vacuum tank and the vacuum pump are respectively connected with a control device; the pressure detector is connected with the control device, the vacuum tank, the vacuum pump and a vacuum degree regulator, respectively, the electric heater is connected with the oil temperature controller, the humidity sensor is arranged in the vacuum tank, and the pressure detector and the vacuum degree regulator are arranged between the vacuum tank and the vacuum pump. Compared with the prior art, the automatic detection device has the characteristics of being capable of realizing intelligent and full-automatic control and automatic detection, high in efficiency, filtering efficiency and purifying efficiency, easy to use and operate, low in failure rate, easy to maintain and high in filtering precision. By utilizing an intelligent programming design, the labor strength of a worker is reduced, and meanwhile, the reliability and the safety of purifying of the fire resistant oil are maximally guaranteed.

The invention discloses a wet-type dense grid filter purifier which comprises a box, a dense grid plate, an atomizing spray head, a flow meter, a liquid supply pump, a liquid collection box and a liquid removal device. A filtering unit adopts the dense grid plate on which fibers are vertically and densely arranged and which has certain thickness, and a spray washing effect of the atomizing spray head is utilized for improving the filtering efficiency and air treatment capacity and blocking the blockage of the filtering unit. The liquid collection box on the lower part of the box of the wet-type dense grid filter purifier comprises a sealing plate, a reflux inlet, a liquid injection port, a dredging opening and a filtering net, aerosol particle-containing turbid cleaning liquor flowing from the cleaned dense grid plate and dropping from the liquid removal device can flow back into the liquid collection box through a discharge opening and is recycled after precipitation and filtration, and the operations of dredging and replacing the cleaning liquor can be periodically performed according to the deposition conditions at the bottom of the liquid collection box. Moreover, the wet-type dense grid filter purifier can adopt cleaning solutions of different properties according to the properties of aerosol particles to be purified, and the wet filtering purification aim is achieved.

The invention belongs to the technical field of waste gas filtering, and particularly relates to a waste gas filtering device. A blast blowing exhaust fan is arranged in a position of a gas inlet; waste gas is sucked into the gas suction pipeline through the blast blowing exhaust fan and is conveyed to a primary filtering chamber; the gas inlet speed is improved; the waste gas high passing quantity is reached; the waste gas filtering efficiency is improved; through the active carbon adsorption in a filtering screen, large particle substances in the waste gas are adsorbed and filtered; after the filtering, the waste gas is exhausted; water in a water box is conveyed to a water spraying pipe after being pressurized through a pressurization pump, and is upwards sprayed to adsorb small particle substances in the waste gas; a rotating spray head is arranged on the top of the water spraying pipe; the rotating spray head rotates at a high speed; the water becomes water mist to be scattered tothe periphery; the sufficient contact with the waste gas can be realized; the adsorption effect is enhanced; the primary filtering effect can be reached; the secondary adsorption sedimentation is performed on the dust particle materials; water in a functional water box is discharged; the discharged water is subjected to waste water treatment; then, secondary circulation use can be performed; theenvironment is protected; no pollutants are generated in the process; the waste gas filtering and purification efficiency is high.

The invention discloses a novel efficient anaerobic biofilter. The biofilter comprises a frame body; moving mechanisms are movably arranged at the four corners of the bottom end of the frame body correspondingly; a pipe head is movably arranged in the middle of the bottom end of the interior of the frame body; connecting pipes are movably arranged at the four corners of the exterior of the pipe head correspondingly; jacking blocks are movably arranged at the positions, opposite to the middles of the connecting pipes, of the periphery of the bottom end of the interior of the frame body; a vertical pipe is movably arranged in the middle of the top end of the pipe head; a bottom layer filter plate is movably arranged between the top ends of the jacking blocks at the bottom end of the interiorof the frame body; and a first mounting head is movably arranged at the lower middle end of the vertical pipe. According to the novel efficient anaerobic biofilter of the invention, mounting groovesare formed in the four corners of the bottom end of the frame body; mounting rods are mounted in the mounting grooves; sliding wheels are mounted at the bottom ends of the mounting rods; the sliding wheels can be quickly mounted and connected through the mounting grooves and the mounting rods before the frame body needs to be moved, and then the sliding wheels are fixed through clamping pins; andtherefore, the flexibility of the frame body during movement is improved.

The invention relates to an electrolytic magnesium anode sublimate filtering device which is characterized in that a chlorine concentration detector is arranged on an elliptical seal head at the top of a cylinder body, a chlorine outlet assembly, a differential pressure transmitter and a pulse dust-cleaning device are arranged at the upper part of the cylinder body, an accident state treatment valve and a nitrogen replacement device are arranged at the middle of the cylinder body, an assistance type access door is arranged the lower part of the cylinder body, a conical ash hopper is arranged at the bottom of the cylinder body, a tangent air inlet assembly is arranged on the conical ash hopper, a filter unit is arranged in the cylinder body, an airflow distributing device is arranged on the tangent air inlet assembly, and an ash hoper air hammer, an ash hopper manual gate valve, a metal compensator and a shaft-free spiral ash conveyor are sequentially arranged at the bottom of the conical ash hopper. The electrolytic magnesium anode sublimate filtering device is capable of filtering and purifying an electrolytic magnesium anode sublimate to ensure that purified high-concentration chlorine can be used as a production raw material of PVC (polyvinyl chloride), and has the characteristics of simplicity in control, high filtering and purifying efficiency, good sealing property, safety and reliability in operation, tangent air inlet, and thorough ash removal.

The invention relates to the technical field of air filtering and purifying, and discloses an air purifier. An air inlet and an air outlet are formed in an outer shell body of the air purifier, a plurality of baffle walls which transversely extend to one another are formed on the inner walls of two opposite sides in the cavity of the outer shell body; the baffle walls are arranged at intervals from bottom to top at intervals, the baffle walls on the two sides are intersected to one another to form a bent flow channel from bottom to top, each baffle wall is provided with a strip-shaped sprayingtube for spraying water to form a water curtain, air which enters from the air inlet is discharged from the air outlet through the bent flow channel, and when passing through the flow channel, the air is washed via the water curtain. An existing simple impact type washing mode is changed, and water-air contact time is prolonged to improve the air filtering and purifying efficiency.

The invention discloses a vehicle-mounted smoke eliminator. The smoke eliminator comprises a shell provided with an air inlet and an air outlet; a smoke purifying and filtering unit, which is arranged in the shell, wherein a smoke outlet of the smoke purifying and filtering unit is communicated with the air outlet; and an air draft unit, which is arranged in the shell. An air suction opening of the air draft unit is located at the air inlet of the shell, an air outlet of the air draft unit is communicated with the flue gas inlet of the flue gas purifying and filtering unit, and the air draft unit is used for sucking air outside the shell to the flue gas purifying and filtering unit from the air inlet. By means of the design, the air draft unit can suck smoke outside the shell to the smoke purifying and filtering unit from the air inlet, aggregated particles in the smoke are absorbed by the smoke purifying and filtering unit, the purified smoke does not contain fog when being exhausted outwards through the air outlet, therefore pollution caused by smoke generated by smoking to the environment in a vehicle is reduced, and harm to human health caused by second-hand smoking is reduced.

The invention discloses an immersion and filtration device for fountain solution wastewater of an offset press for printing, the immersion and filtration device comprises a base, wherein the base is provided with an immersion tank, the interior of the immersion tank is of a cavity structure, the top of the immersion tank is of an open structure, a filter bin is arranged in the immersion tank, anda sealing cover is arranged on the top of the filter bin; a plurality of limiting plates are arranged at the position of the inner bottom of the immersion tank, a limiting cavity is arranged between the limiting plates, and the bottom of the limiting cavity is wider than the bottom of the filter bin; hydraulic cylinders are arranged on both sides of the immersion tank, piston rods are arranged atthe upper parts of the hydraulic cylinders, a lifting frame is arranged between the top ends of the piston rods, a lifting rod is arranged in the middle of the lifting frame, buckling frames are arranged at the lower ends of the lifting rods, clamping plates are arranged on both sides of the buckling frame, buckling plates are arranged at the lower parts of the clamping plates, the filter bin is arranged between the buckling frames, and the buckling plates are arranged on the bottom surface of the filter bin. According to the invention, a filtered fountain solution enters the filter bin, and the fountain solution is purified through the filter bin, thus greatly improving the efficiency of filtering and purifying the fountain solution.

The invention discloses a juvenile shrimp transfer device for crayfish culture, which relates to the field of agricultural technology; in order to solve the problem that most of the juvenile shrimp are transported by using a single water tank, or directly using a plastic bag full of gas and water for transportation, resulting in juvenile shrimp. The problem of the decrease in the survival rate is the problem of decrease in survival rate; it specifically includes the base, the top of the base is fixedly installed with a box body, and the two ends of the box body are fixedly installed with regulating valves, and a circulation pipe is fixedly installed between the two regulating valves, and the box body is fixedly installed. The end of the device is provided with a device cavity. In the present invention, after the juveniles are familiar with the stocked water body, the valve and the circulating pump are fully opened, so that the external water body and the box body flow rapidly, and at the same time, the isolation frame is pulled out of the box body, and then the juveniles are flushed out through a large amount of water to complete the process. In the process of placing juveniles, there is no need to repeatedly salvage juveniles, which further improves the survival rate of juvenile transfer, and the device can be reused, reducing white waste and reducing the cost of juveniles.

The special dust removal device for an electric shovel cabin provided by the invention belongs to the technical field of electric shovel dust removal. It mainly solves the problems of poor filtering performance, many electrical failures and difficult maintenance in the prior art. It includes a dust removal mechanism and a fan, and its characteristics are: it also includes a rainproof cover and a dust discharge mechanism; the top surface of the rainproof cover is a hollow peak structure, and the outer part of the lower part is provided with a dusty air inlet, which is connected with the dusty air. The air inlet of the dust removal mechanism is arranged adjacent to the entrance, and the dust removal mechanism is composed of several groups of filter devices; the air outlet of the dust removal mechanism arranged adjacent to the dusty air inlet is connected with the air inlet of the fan through the air duct in the hollow rainproof cover. The fan is located above the rear of the engine room, and the air outlet of the fan communicates with the engine room. The present invention is arranged at the rear of the electric shovel and is located on the top of the engine room. Cartridge-type filter device is adopted, which is easy to maintain, has high filtration and purification efficiency, and a rainproof cover, so that the dust removal equipment can adapt to bad weather and improve the availability of equipment.

The present invention relates to the field of wine making devices and particularly relates to a wine making purifying device. The wine making purifying device comprises a middle rotating cylinder, a vertical frame, a lifting plug, a left coupling, a right coupling, a purification filter plate, a lifting box, a lifter and a base seat, and the middle rotating cylinder is fixed on an upper end of thevertical frame; a lower end of the vertical frame is fixed on the base seat; an upper end of the lifting plug is connected to a top end of the middle rotating cylinder, and a lower end of the liftingplug is slidably fitted in a wine discharging hole in a bottom end of the middle rotating cylinder; the lifting plug is in a drive connection with the left coupling and the right coupling; an upper end of the left coupling is rotatably connected with a left end of the lifting plug, a lower end of the left coupling is rotatably connected with a left end of the purification filter plate, and a middle part of the purification filter plate is sealedly slidably cooperated in the lifting box; and an upper end of the right coupling is rotatably connected with a right end of the lifting plug. The wine making purifying device can automatically realize an intermittent type switching adjustment of wine filtering work and filter mesh cleaning work, does not need manual stopping of device operation and is beneficial to improve purifying and filtering efficiency of wine.

The invention belongs to the technical field of gas turbines, and discloses an efficient cylinder type air filter for a gas turbine, which is used for solving the problems that an existing filtering cylinder is small in filtering area and high in resistance. The efficient cylinder type air filter comprises a filtering cylinder framework consisting of an outer metal net layer and an inner metal net layer; the outer metal net layer and the inner metal net layer form the filtering cylinder framework; filtering paper is arranged between the outer metal net layer and the inner metal net layer; two ends of the filtering cylinder framework are respectively connected with seal end covers; one seal end cover is connected with a ventilation pipe which is communicated with the interior of the filtering cylinder framework; the bottom end of the ventilation pipe is connected with a gas distribution disc; gas distribution openings are formed in the side surface and the bottom surface of the gas distribution disc; the outer metal net layer is of a cylindrical structure formed by a wavy metal net layer; the inner metal net layer is of a cylindrical structure formed by a wavy metal net layer; the wave crest and the wave trough of the outer metal net layer respectively correspond to the wave crest and the wave trough of the inner metal net layer.

The invention relates to a spraying waste gas mist purification system which comprises a separation device and a fan. The separation device at least comprises a separation tower and a spiral separation filter element; the spiral separation filter element is arranged in the separation tower; the interior of the separation tower is divided into a spiral separation area and a flow guide area, which are communicated with each other, through the spiral separation filter element. The fan is arranged on the outer side of the separation tower and is used for sucking waste gas mist into the separation tower during working, and the waste gas mist in the separation tower is spirally separated and filtered through the spiral separation area and is discharged out of the separation tower through the flow guide area. The waste gas mist is separated and filtered under the spiral centrifugal acting force of the spiral separation area, and the separated and filtered gas is discharged from the flow guide area, so that the waste gas mist such as paint mist, solvent and dust generated when the spraying equipment works is effectively filtered and purified, and the spraying equipment can realize green spraying operation; the harm of the waste gas mist to the health of field personnel and the pollution to the air are reduced.

The invention discloses a vehicle-mounted ashtray. The ashtray is ellipsoidal in shape and includes an ashtray body for collecting ash and an ashtray cover. The ashtray body and the ashtray cover are detachably connected; an air filtering device is positioned within the ashtray cover; the ashtray body is provided with a cigarette holding port formed in a lower half part of the ashtray, and the ashtray body is provided with a seal cover for sealing the cigarette holding port. According to the invention, the ashtray is ellipsoidal in shape, and the cigarette holding port is formed in a lower half part of the ashtray, so that the smoke can remain in the ashtray for a long time, and is exposed to the air filtering device for a long time, and the air filtering and purifying effect is improved.

The invention discloses a multistage filtering device for municipal sewage treatment. The multistage filtering device comprises a first-stage water storage filtering tank, wherein the first-stage water storage filtering tank communicates with a plurality of second-stage filtering assemblies, and the second-stage filtering assemblies communicate with a plurality of third-stage filtering assemblies;each second-stage filtering assembly comprises a filter cartridge, and adjacent filter cartridges communicate with each other in series through first pipelines; each third-stage filtering assembly comprises a filtering membrane pipe, and adjacent filtering membrane pipes communicate with each other in series through second pipelines; the filter cartridges communicate with the filter membrane pipes through the first pipelines; and a filter cartridge cavity is formed in each filter cartridge, and a plurality of filter components which are arranged at intervals along a front-to-back direction and are used for filtering are arranged in and fixedly connected with the filter cartridge cavity. Graded filtration is achieved through the design of the components of the device, filtering and purifying efficiency is high, filtering time is effectively prolonged through graded filtration, and filtering effect is improved.

The invention discloses an environmentally-friendly air filtering device for effectively reducing the ozone generation. The environmentally-friendly air filtering device comprises a device main body,a placing trough, an ozone reducing device and a filtering device, wherein universal wheels are fixed at four corners of the bottom end of the device main body; one end of the left side of the devicemain body is provided with a power cord, and the other end of the left side of the device main body is provided with the placing trough; a support rod is hinged inside the placing trough; an air intake grille is disposed at one end of the front surface of the device main body; and an operation button is disposed at the other end of the front surface of the device main body. The environmentally-friendly air filtering device for effectively reducing the ozone generation can effectively reduce the ozone generation and avoid secondary pollution to the environment. Meanwhile, the device is providedwith a dust removing device, so that the internal environment is clean; moreover, the device is efficient in filtering, can kill bacteria, and is convenient to disassemble, therefore, the practicability of the device is improved.