98results about How to "Improve the purification and filtration effect" patented technology

The invention relates to an automatic cleaning device of an air filtering medium. The automatic cleaning device comprises a box body, wherein the left side wall and the right side wall of the box body are provided with an air inlet and an air outlet, respectively; the box body is internally provided with a high-pressure coil plate and an active carbon plate; a water channel is arranged at the bottom part in the box body; the left side wall of the water channel is provided with a water pump which is provided with a guide pipe; the other end of the guide pipe is provided with a spraying nozzle; a rotating mechanism is arranged above the water channel in the box body and is formed by an upper rotating shaft, a lower rotating shaft and ring-shaped filtering cloth. The automatic cleaning device is simple in structure and wide in applicability, can be used in regions such as residential buildings or chemical industries, is convenient to install, can be directly arranged at an air opening of multiple equipment such as an exhaust fan or a range hood, and has the advantages that the filtering cloth does not need to be replaced, and as the filtering cloth cannot deviate, the filtering cloth is prevented from being clamped in the rotating shaft; the internal structure of the device guarantees no ventilation, and the high-pressure coil plate, the ring-shaped filtering cloth and the active carbon plate are matched with one another, so that the efficiency of purifying and filtering oil smoke is obvious.

The invention relates to a low-noise modular air purification system. The low-noise modular air purification system comprises a medical exhaust air and fresh air integrated cabinet, a return air processing and air supply ceiling and return air ports, wherein the medical exhaust air and fresh air integrated cabinet is used for feeding fresh air and to-be-exhausted air and exhausting the fresh air and the to-be-exhausted air after processing; the return air processing and air supply ceiling is used for evenly mixing, purifying and filtering the introduced fresh air and return air and exhausting the mixed air in a light turbulence mode; and a medical room and a return air channel communicate through the air return ports so that the return air can be introduced into the return air processing and air supply ceiling. The low-noise modular air purification system can remarkably decrease the rate of postoperative infection and greatly reduce energy consumption; meanwhile, through highly integrated equipment and the modular installation mode, the construction cost and complexity are remarkably reduced, so that the construction cost of operating rooms is remarkably reduced, and the construction period of operating rooms is remarkably shortened; due to the facts that no special machine room or return air pipeline is required and the number of valves is small, the space requirements are reduced remarkably; and besides, noise can be remarkably lowered on the premise that sufficient air volume is ensured.

An air filtering net convenient to assemble and disassemble and used for a workshop is arranged in a groove formed in the inner wall of a plant workshop, or is arranged in a groove protruded out of the inner wall of the plant workshop; one or more than one filtering net frame mounting base, filtering net frame and inner frame with a filtering net are arranged in the groove of the wall sequentially from outside to inside in the longitudinal and transverse directions; the filtering net frame mounting base is embedded on the inner wall of the groove of the wall; the filtering net frame tightly clings to the inner wall of the filtering net frame mounting base; the inner frame with the filtering net is movably arranged in the filtering net frame; two pairs of fixed shafts are arranged at four corners of the filtering frame mounting base; the two pairs of fixed shafts are connected with blocking strips capable of rotating by 90 degrees; magnetic bodies enabling the tail ends of the blocking strips to adsorb are embedded at the tail ends of the two blocking strips which are horizontally arranged; and the filtering net frame is arranged on the inner side faces of the rotating blocking strips. A strip-shaped groove enabling the inner frame to come in and go out movably is formed in one side of the longitudinal direction of the groove protruded out of the inner wall of the plant workshop; and the filtering net can be assembled and disassembled from the front side and the lateral side, so the mounting stability of the filtering net is improved, and cleaning, maintenance or change of the filtering net is facilitated.

The invention is suitable for the field of air conditioners, and discloses an air treatment module and an air conditioner. The air treatment module comprises a shell, a purifying and filtering net and a draught fan; the shell is provided with an air treatment air inlet, an air treatment air outlet and an air treatment air duct which communicates with the air treatment air inlet and the air treatment air outlet and is independently arranged relative to a heat exchange air duct of the air conditioner; the air treatment air duct comprises an air inlet cavity communicating with the air treatment air inlet and an air outlet cavity which is arranged over the air inlet cavity and communicates with the air inlet cavity and the air treatment air outlet; the draught fan is arranged in the air outlet cavity in an axial and vertical mode, the purifying and filtering net is arranged in the air inlet cavity in an annular mode, and the air treatment air outlet is formed beside the draught fan in the radial direction. According to the air treatment module and the air conditioner, the effect of improving the air quality can be achieved on the condition that a heat exchange function of the air conditioner is not influenced; in addition, it can be guaranteed that the purifying and filtering net has the large filtering area on the condition that the horizontal extension sizes of the shell are designed to be small, and the air purifying and filtering effect is good.

The invention discloses a sheet package type melt spinning cartridge consisting of inner and outer layers, wherein the outer layer is a filter core sheet layer while the inner layer is a filter core wire layer. The invention also discloses production equipment of the sheet package type melt spinning cartridge, which comprises a melt spinning device, wherein at least two spinneret plates are connected in front of the melt spinning device, a rotary polished rod and a rotary screw rod are arranged in front of the spinneret plates, the outer diameters of the polished rod and the screw rod are equal and the spin axis of both are collinear, the rotation speed of the screw rod is higher than that of the polished rod, and the plastic wires sprayed from the spinneret plates are wound on the polished rod and the screw rod, so as to form a melt spinning cartridge bar; the sheet package type melt spinning cartridge also comprises a drum mechanism arranged between the melt spinning cartridge bar and the spinneret plate which is far away from the polished plate and comprising a drum connected with a supporting frame by a rotating shaft, the supporting frame is fixedly arranged on a worktable, and the spinneret plates, the drum and the melt spinning cartridge bar are arranged at the same altitude. The melt spinning cartridge prepared by the production equipment and the processing method disclosed by the invention is excellent in purification and filtering effects, long in service life, and beneficial for popularization and application.

The invention relates to a faucet technology field, particularly a cold and hot water conjoined faucet with a water filter. The faucet comprises a cold water filter and a hot water filter on the faucet main body, four cold and hot water input and output pipes on the faucet main body base, two water outlets on the faucet main body base, two independent faucet valves and an independent faucet three-way valve arranged on the faucet main body. The cold and hot water conjoined faucet with the water filter has simple structure, low costs and practicality and can output the filtered cold water and the filtered hot water in a faucet.

The invention discloses a portable air purifying air supply gauze mask, comprising a mask body and an air purifying air supply device which are communicated by a pipe, wherein the air purifying air supply device comprises a rack body, a power supply, an air pump and a filter, the filter comprises a cavity and a filtering and adsorbing device arranged in the cavity, the filtering and adsorbing device comprises a dry-type adsorbing device and a wet-type adsorbing device, the dry-type adsorbing device comprises a porous adsorbing medium positioned at the bottom of the cavity, and the wet-type adsorbing device comprises a cup body and purifying adsorbing liquid arranged in the cup body. The portable air purifying air supply gauze mask is mainly used by people who carry about the portable air purifying air supply gauze mask or by people with specific professions. The portable air purifying air supply gauze mask is compact in structure, convenient to carry, and good in filtering effect and has many filtering layers; the verdelite adsorbing medium has multiple functions, such as filtering, dust collecting, deodorizing, sterilizing and disinfecting, and endows the filter with a self-cleaning function, so that filtering materials do not need to be frequently replaced, and the use cost is low.

Disclosed is a household sewage treatment device with an adsorption function. The device comprises a tank body, a water inlet formed in the top of the tank body and a water outlet formed in the bottomof the tank body; a filter plate is horizontally arranged at the portion, close to the top, of the tank body, a flow guide plate inclining downwards is arranged at the bottom side of one end of the filter plate, a spiral pipe is connected to an outlet of the bottom of the flow guide plate, and an impurity adsorption layer is arranged on the inner wall of a pipe body of the spiral pipe; an aeration chamber is formed in the space, located at the bottom of the spiral pipe, in the tank body, an outlet of the bottom of the spiral pipe is communicated with the aeration chamber, the bottom of the aeration chamber is provided with an aeration outlet, a clear water storage chamber is formed in the space, located at the bottom of the aeration chamber, in the tank body, and the water outlet is formed in one side of the clear water storage chamber. The household sewage treatment device is convenient to assemble and low in cost.

The invention relates to an atmospheric water generator with high water purification efficiency. The atmospheric water generator comprises an air inlet mechanism, a condensation mechanism, a water storage mechanism, a water purification mechanism and a water outlet mechanism which are sequentially communicated. The water purification mechanism comprises a pressurization assembly and a water purification assembly which are communicated. According to the atmospheric water generator, through a reducing pipe, the water flow speed is increased, water pressure is increased, and therefore the work reliability of a subsequent water purification assembly is ensured; furthermore, by controlling a driving wheel by a driving shaft to rotate, the periodic water pressurization can be controlled, the atmospheric water generator is simple in structure, low in noise and low in power consumption, the practical value of the atmospheric water generator is greatly improved, it is avoided that due to the long-term forward and backward rotation of a driving motor, coils are burnt out, and therefore the reliability of the atmospheric water generator is improved; by means of multi-layer air filtering, the air purification quality is improved; by means of three water outlet forms, practicability is improved, and the atmospheric water generator has large market launching value.

The invention relates to equipment for aquaculture, especially to a sewerage system for an adult fish culture pond. The sewerage system comprises an aquaculture pond body, a rotary pollution discharge device and a residual-feed excrement collector. Due to the above structure, it is beneficial to discharge of sewage when water spirally flows in the culture pond. The upper end of a backwater opening is provided with a pollution discharge device cover, thus preventing aquatic products from entering a pollution discharge opening. After discharged, sewage is collected and deposits in the residual-feed excrement collector. A supernatant enters an overflow tube with a steering bend and enters a secondary water purification and filtration link. Thus, water sources are saved; a purification and filtration effect is more excellent; and overflow and backflow are prevented. A plug is a columnar hollow long plug embedded in a discharge outlet, and the sidewall of the upper end of the long plug is provided with multiple drain openings. The pipe orifice of the overflow tube is lower than the drain openings, thus preventing sewage from overflowing from the residual-feed excrement collector when sewage flow is too much.

The invention relates to the technical field of taps, in particular to a water filter. The water filter comprises a connector which is arranged on the water filter and is connected with a water outlet pipe mouth of a tap, a water inlet pipeline and two water outlet pipelines arranged on the water filter, an independent tap three-way switch arranged on the lower part of the water filter, and a single-tube water outlet. The water filter has the advantage of providing a water filter which has good effects of purification and filtration and is favorable for use of units, families and individuals; and the water filter has simple structure design, convenience, practicality, and quite low cost, and can achieve the aim that one tap outputs filtered and purified water and sanitary and clean water which is filtered by a filter core respectively.

The invention relates to an intelligent air water maker high in water purifying efficiency. The intelligent air water maker comprises a water purifying mechanism which comprises a first-stage purifying mechanism and a second-stage purifying mechanism, and a water storing mechanism is communicated with the second-stage purifying mechanism through the first-stage purifying mechanism which comprises a water incoming pipe, a water outgoing pipe and a first-stage water purifying component. In the intelligent air water maker, through multilayer purifying of the first-stage water purifying mechanism and the second-stage water purifying mechanism, water purifying efficiency is improved; in the first-stage water purifying mechanism, opening and closing of a water incoming valve and a water outgoing valve are controlled, and purifying of water through a sintering filter net is realized; the inner wall of a water purifying barrel is repeatedly cleaned by a buoyancy brush, so that reliability of water purifying is improved; multilayer air filtering is adopted, so that air purifying quality is improved; water outgoing in three forms is realized, so that practicability is improved, and the intelligent air water maker has high market entering value.

The invention relates to equipment for aquaculture, especially to a sewerage system for an adult fish culture pond. The sewerage system comprises an aquaculture pond body, a rotary pollution discharge device and a residual-feed excrement collector. The rotary pollution discharge device comprises a pot-type pollution discharge base, a backwater opening and a pollution discharge opening which spirals downward. The upper end of the pollution discharge opening is provided with a pollution discharge device cover. The bottom of the residual-feed excrement collector is conical. The conical bottom is provided with a discharge outlet which is provided with a plug. A pollution discharge pipe is arranged between a middle piece of the residual-feed excrement collector and the pollution discharge opening. An upper piece of the residual-feed excrement collector is equipped with an overflow tube which is connected with a steering bend. According to the system, backwater and sewage can be effectively separated. When water spirally flows in the culture pond, it is beneficial to discharge of sewage. The pollution discharge device cover is used for preventing aquatic products from entering the pollution discharge opening. Sewage is collected and deposits in the residual-feed excrement collector. A supernatant enters the overflow tube with the steering bend and enters a secondary water purification and filtration link. Thus, water sources are saved; a purification and filtration effect is more excellent; and overflow and backflow are prevented.

The invention relates to the technical field of water purification, in particular to a portable field water purifier for a squad or platoon, which is suitable for armies, departments, families, and individuals to use in the wild in case of calamities. The invention has the advantage of providing the portable field water purifier for a squad or platoon, which has favorable purification and filtration effects, is convenient for armies, departments, families, and individuals to use in the wild in case of calamities. The portable field water purifier for a squad or platoon has simple structure design, and every low cost and is convenient to use and practical. The water purifier compresses original water in a water supply bucket by utilizing an electric pump or natural gravity to achieve the aim that one water purifier can respectively output clean water, cooking water and direct drinking water. Meanwhile, the water purifier can achieve the aims of protecting a primary filter core by outputting clean water and protecting a final filter core by outputting cooking water.

The invention relates to an air water generator high in water purification efficiency. The air water generator comprises a water purification mechanism. The water purification mechanism comprises a PP cotton filtering mechanism and a purification assembly which are sequentially arranged. A water storage mechanism, the PP cotton filtering mechanism and the purification assembly are sequentially arranged. In the air water generator high in water purification efficiency, through multiple filtering of the PP cotton filtering mechanism and the purification assembly, high efficiency in water purification is guaranteed; through cross flow of a deflector in a filter cartridge, the efficiency in water purification is improved, the water quality is detected through a water quality detection mechanism, water circulating filtration is performed by matching of a three-way valve, and the reliability in water purification is improved. Moreover, in a water quality monitoring circuit, a conventional component is adopted to replace an expensive integrated circuit, the cost of the air water generator is reduced, and the market competiveness of the air water generator is improved; multilayer air filtration is performed, and the air purification quality is improved; three forms are adopted for water discharge, the practicality is improved, and the air water generator has high time-to-market values.

The invention provides an air purifying device. The air purifying device comprises a housing, a primarily efficient filter and a fan, wherein an air inlet and an air outlet are formed on two sides of the housing; the fan is mounted within the housing on an air outlet side, while the primarily efficient filter is mounted within the housing on an air inlet side; a PM2.5 filter and an electrode smoke eliminator are orderly arranged between the primarily efficient filter and the fan. Compared with the prior art, the air purifying device has the beneficial effects of small volume, convenience for moving, low cost, satisfaction of public demands, and good air purifying and filtering effect.

The invention discloses a scrubber integrated system capable of circularly filtering and recycling sewage. The scrubber integrated system is characterized by comprising a shell, a roller assembly, a dust collection assembly, a water tank and a water circulation assembly are arranged in the shell, the roller assembly is arranged at the front end of the shell and used for sweeping garbage and collecting the garbage into the dust collection assembly, the water tank abuts against the roller assembly, a closed cavity for water to pass through is formed between the water tank and the roller assembly and communicated with the water circulation assembly through a liquid inlet pipeline and a liquid outlet pipeline, and the water circulation assembly can drive water to flow through the closed cavity, sewage flowing out of the liquid outlet pipeline enters the water circulation assembly to be purified and then flows into the closed cavity through the liquid inlet pipeline to achieve water circulation utilization. The system has the advantages of being exquisite in structure, capable of achieving product miniaturization, good in cleaning effect, good in use experience, low in production and manufacturing cost and beneficial to saving water, and the market application prospect is good.

The invention provides a graphene water purifier. The graphene water purifier is simple and compact in structure, rational, and small in size, capable of separating drinking water from living water, provided with a filter element structure with the good filtering effect, and has the good purifying and filtering effects. Impurities including large silt, suspended solids, iron rust and the like in water can be filtered by a precision stainless steel mesh. Impurities including fine silt, suspended solids, colloid and dust and the like in the water can be filtered by a PP cotton folding layer of apolypropylene melt-blowing filter element. A high-energy biochemical ceramic filter element of a ceramic or composite molecular sieve filter element is capable of increasing biological activity, cutting macromolecular group water into micromolecular group water, enabling water to be alkalescent, and effectively improving physiological function of a living body. A composite-type silver-loaded activated carbon filter element is capable of effectively adsorbing organic matters of compounds, pesticides, trichloromethane and the like in the water, and removing heterochrome in the water.

The invention is suitable for the field of air conditioners, and discloses an air treatment module and an air conditioner. The air treatment module comprises a shell, a purifying and filtering net, a humidifying net and a draught fan; the shell is provided with an air treatment air inlet, an air treatment air outlet and an air treatment air duct which communicates with the air treatment air inlet and the air treatment air outlet and is independently arranged relative to a heat exchange air duct of the air conditioner; the purifying and filtering net, the humidifying net and the draught fan are all arranged in the air treatment air duct, the axial direction of the draught fan is horizontal, and the purifying and filtering net is arranged at one axial end of the draught fan; and the humidifying net is arranged on the radial side of the draught fan and located between the draught fan and the air treatment air outlet in the air flowing direction in the air treatment air duct. According to the air treatment module and the air conditioner, normal running of a heat exchange function of an air conditioner body can not be influenced by arrangement of the air treatment module; in addition, it can be guaranteed that the purifying and filtering net has the large filtering area on the condition that the shell of the air treatment module is designed to be short, and the air purifying and filtering effect is good.

The invention discloses a primary filtering device for environment-friendly rainwater treatment and a using method thereof. The primary filtering device comprises a device base, and a filtering box body is installed on the device base; and two groups of partition plates are arranged in the filter box main body, wherein the interior of the filter box main body is divided into three groups of first filter tanks, second filter tanks and third filter tanks with the same size and structure by the two groups of partition plates, and filter screens are arranged on the first filter tanks, the second filter tanks and the third filter tanks, and the diameters and densities of filter holes of the three groups of filter screens are different. According to the invention, the three groups of filter screens are arranged in the filter box main body to perform multi-stage filtration on rainwater, so that the rainwater filtration and purification effect is gradually improved; meanwhile, three groups of pipeline filters corresponding to the filter tanks are arranged to further perform filtration and purification on the rainwater, and chemical reagents are respectively added into the three groups of filter tanks to perform reaction and purification on the rainwater. Therefore, physical and chemical purification of rainwater is realized, and the primary filtration and filtration treatment efficiency of rainwater is effectively improved.

An environment-friendly air purification and impurity removal device comprises a shell structure and an air inlet structure arranged outside the shell structure. The shell structure comprises a shell.The shell is provided with a first through hole located in the upper surface of the shell and a second through hole located in the left surface of the shell. The environment-friendly air purificationand impurity removal device is characterized in that the environment-friendly air purification and impurity removal device further comprises a rotating structure arranged on the shell structure, andthe rotating structure comprises a motor, a rotating shaft arranged on the motor, a rotating frame arranged in the shell, a plurality of filter screens arranged on the outer circumferential surface ofthe rotating frame, and a spiral part. The rotating frame is arranged in the shell, the filter screens are arranged on the outer circumferential surface of the rotating frame, and the rotating filterscreens are periodically immersed in a purifying liquid or water to make the filter screens periodically brushed, so impurities on the filter screen can be removed, and the filter screens can be humidified to improve the air purifying and filtering effect.

The invention relates to an air water production machine with an accurate detection function and an efficient water purification function. The air water production machine comprises a water purification mechanism. The water purification mechanism comprises a water softening mechanism and a water purifying mechanism, the water softening mechanism comprises a water inlet pipe, a water softening barrel, a flow distributing device, a flow guide pipe, a water outlet pipe and a regeneration and reduction assembly, the flow distributing device is arranged on the upper side of the water softening barrel, and the flow guide pipe is arranged inside the water softening barrel. The air water production machine with the accurate detection function and the efficient water purification function has the advantages that water can be purified by the water purifying mechanism in a multilayer manner after being softened by the water softening mechanism, and accordingly the water purification efficiency can be improved; calcium and magnesium ions in the water can be accurately measured by a water quality sensor, so that resin particles can be subjected to reduction by saline water in a salt tank under the control, the sustainable work capacity of the water softening mechanism can be guaranteed, and the water purification reliability of the air water production machine can be improved; air can be filtered by multiple layers, so that the air purification quality can be improved; the water can be discharged in three forms, accordingly, the practicality of the air water production machine can be improved, and the air water production machine has high market launching value.

A cooking fume cleaning integrated machine comprises a cooking fume separating box and a fume decomposing box which are arranged at the bottom part, wherein a group of oil throwing plates are arrangedin the cooking fume separating box, and a condenser is arranged at the lower parts of the oil throwing plates; an oil groove is formed in the bottom part of the cooking fume separating box, and an oil outlet is formed in the bottom part of the oil groove; a high and low voltage electric field, a filtering part and an air blower are sequentially distributed in the smoke decomposing box along a smoke marching route; an outlet of the air blower is connected to an outlet of the smoke decomposing box; a group of filtering plates is arranged on the filtering part, and filtering layers are arrangedon the filtering plates; and the filtering plates are connected from top to bottom in an end-to-end manner to form folding line wave shape. The machine is reasonable and compact in structure; drainingand treating are integrated; the problem of monitoring in use is avoided; the machine is arranged at the front for cleaning, so that low-attitude exhausting is achieved; the energy is obviously saved; the inside is automatically washed, and additional washing is avoided; 99% of smell can be removed; the machine is easily managed and durable; and the machine is subjected to modular combination, and the technical processes are the fewest; a small space is occupied; the mounting and dismounting are convenient; the environment is protected; and various cooking works apply.

The invention relates to the technical field of taps, in particular to a single-tube siamesed tap with double water filters. The single-tube siamesed tap comprises two water filters arranged on a tap main body, four water inlet and outlet pipelines arranged on a pedestal of the tap main body, two water outlets arranged on the tap main body, and two independent tap switches arranged on the tap main body. The single-tube siamesed tap has the advantage of providing a single-tube siamesed tap with the double water filters which has good effects of purification and filtration and is favorable for use of units, families and individuals; and the single-tube siamesed tap has simple structure design, convenience, practicality, and quite low cost, and can achieve the aim that one tap outputs direct drinking water and purified and filtered water respectively.

The invention discloses a domestic sewage treatment device. The device comprises a placement shell, a sewer pipe, a separation grid, a drainage pipe, rotating blocks, a connecting cylinder, a blockingring, a fixing bolt, a connecting pipe, a water pumping pipe, a water storage shell, a limiting shell, a baffle plate, a filtering mechanism, screw rods, clamping shells, a first activated carbon filter screen, an ultrafiltration membrane, a reverse osmosis membrane, fastening nuts, a foam plate, a foam cavity, a second activated carbon filter screen, a water suction pump, a water outlet pipe, anend cover, vibration motors, connecting plates, springs, fixing rods, blocking blocks, bases and sliding cavities. The domestic sewage treatment device is novel in design and is convenient for centralized treatment of domestic sewage; the purification and filtration effect of the domestic sewage is improved through the arranged filtering mechanism; the filtering mechanism can be conveniently disassembled and assembled, so that the filtering mechanism is convenient to clean and use; through arranged vibration mechanisms, the sedimentation effect of impurities in water in the water storage shell can be improved, water purification efficiency is improved, and meanwhile, precipitated substances can be cleaned conveniently after clean water is discharged, so that use is facilitated.

The invention provides a waste heat recovery device for cement production in building field. The waste heat recovery device comprises a top shell structure, a lower shell structure arranged below thetop shell structure, a rotating structure arranged in the top shell structure and a heat exchange structure arranged below the rotating structure; the top shell structure comprises a top shell, a connecting pipe arranged on the top shell and a water pump arranged on the connecting pipe; a first through hole is formed in the side face of the top shell; the upper end of the connecting pipe is aligned with the first through hole and is fixedly connected with the side face of the top shell; the lower shell structure comprises a lower shell; the upper end of the lower shell penetrates through the inner surface and the outer surface of the top shell and is fixedly connected therewith; a second hole is formed in the side face of the lower shell; and the lower end of the connecting pipe is alignedwith the second through hole and is fixedly connected with the side face of the lower shell. According to the waste heat recovery device for cement production in building field, a floating frame anda rotating frame are arranged, so that the floating frame can float on the water surface, the rotating frame is immersed in water, the water in the top shell can continuously enter the rotating framethrough a sixth through hole in the rotating frame, and the water can fully contact and absorb the hot air.

The invention provides a composite industrial oil fume purifier and an oil fume purification system, and aims to solve the problem that a filter screen of a composite industrial oil fume purifier in the prior art is difficult to clean after the composite industrial oil fume purifier has been used for a long time. The composite industrial oil fume purifier comprises a box body, an air inlet and anair outlet are formed in the box body; a flow equalizing section, a filter screen and an electric field section are sequentially arranged in the inner cavity of the box body from the air inlet to theair outlet; and a first spray head assembly is arranged between the filter screen and the electric field section, is arranged above the box body and faces the filter screen. The oil fume purificationsystem comprises an exhaust fume collecting hood, a composite industrial oil fume purifier, a fan and a silencer, which are sequentially connected through an oil fume channel. The oil fume purification system comprises an exhaust fume collecting hood, a fan and a composite industrial oil fume purifier which are sequentially connected through an oil fume channel. The filter screen can be cleaned only by connecting an external water pipe to the first spray head assembly regularly, the filter screen does not need to be disassembled and assembled during cleaning, and the operation is convenient.

The present invention relates to a cock technology field, especially a double-tube conjoined cock with a water filter, including a water filter arranged on a main body of the cock, an intake conduit arranged on a base frame of the cock main body, two outlet conduits arranged on two sides of an upper end of the cock main body, two water outlets arranged on the cock main body, and three independent cock water valves arranged on the cock main body. The advantage of the invention is that the double-tube conjoined cock with the water filter has a good purification and filtering effect, and is convenient to be used by a company, a family or a person. The double-tube conjoined cock with the water filter has a simple structure and a low cost, and is convenient and practical. It is capable of outputting filtering-purifying water and cleaning filter element water through a same cock.

A smart air purification health care instrument is mainly composed of a casing, a front panel and a back box. A plurality of side air inlet groove are arranged on two sides of the front panel. An eight-stage purification mechanism is clamped inside the casing. The side surfaces of the casing are connected with two physiotherapeutic electrodes through wires. The back box is provided with a water screen capable of improving air humidity. A fan air inlet is communicated with the eight-stage purification mechanism, and a fan air outlet is connected with an inlet of the water screen. A grid-type air window is arranged at the top of the back box, and knob-type wind direction wind wheels are arranged on two sides of the grid-type air window. An air detection sensor is arranged on the side surface of the back box. The smart air purification health care instrument is provided with the eight-stage purification mechanism, thereby greatly improving the air purification and filtering effect; meanwhile detects the health indicators of air in real time through the air detection sensor. In addition, the smart air purification health care instrument is provided with the physiotherapeutic electrodes and the water screen purification mechanism, thereby achieving the physiotherapeutic function and the air humidity regulation function and having the advantages of being high in intelligent degree, multi-functional, environment friendly and health-care.

The invention discloses a reagent grade hydrofluoric acid preparation device. The reagent grade hydrofluoric acid preparation device comprises a drying tank; a feeding port is mounted in one side of the upper part of the drying tank; an air pump is mounted on one side, far away from the feeding port, of the upper part of the drying tank; and an air introducing pipe is mounted at an output end of the air pump. The reagent grade hydrofluoric acid preparation device is provided with the drying device; fluorite powder is subjected to complete drying treatment through hot air sprayed from a rotaryspraying head to prevent water in the undried fluorite powder from influencing the concentration of hydrofluoric acid after a production reaction, so that the production quality is improved; the hydrofluoric acid preparation device is provided with two groups of distillation columns, namely, a crude distillation column and a rectifying column; the crude distillation column is mainly used for removing most sulphuric acid, water and fluorite powder; the rectifying column can effectively remove metal ions from the hydrofluoric acid; through double purification,a hydrofluoric acid solution with high purity can be produced; compared with conventional single distillation column, the purifying filtering effect is better; the precision is higher; and an additive is not required to be added manually, so that the operation is more convenient.