97 results about "Roughing filter" patented technology

The invention relates to the field of leather wastewater treatment, and discloses a leather wastewater multi-stage filtration and recovery treatment system, which comprises a primary treatment tank, one side of the primary treatment tank is fixedly provided with a rough filtration chamber, and the interior of the rough filtration chamber is fixedly provided with an inclined mesh cylinder; a slag conveying pipe which is obliquely arranged is fixedly mounted in the middle of the interior of the mesh cylinder, the tail end of the slag conveying pipe extends to the exterior of the rough filtration chamber, a conveying auger is fixedly mounted on the outer diameter of the rotating shaft, and a slag opening is formed in the side, located in the mesh cylinder, of the top end of the slag conveying pipe; a slag scraping brush is fixedly mounted in the middle of the top end of the mesh cylinder, and a secondary treatment tank is fixedly mounted on the other side of the primary treatment tank. Through three-stage progressive filtration and combination of automatic slag removal and backwashing design, the treatment load is reduced, stable operation of the system is guaranteed, maintenance is simplified, the leather wastewater treatment efficiency and the effluent quality are greatly improved, and efficient recovery is realized.

The invention relates to the technical field of power plant monitoring equipment, and discloses an abnormity monitoring device and system for deep cleaning of a wind power plant unit water cooling system, which comprises a multifunctional anti-corrosion water tank, a large-flow pulse type anti-corrosion flushing pump, a connecting assembly and a monitoring assembly, a three-stage filtering system, a temperature control assembly and a liquid level detection component are arranged in the multifunctional anti-corrosion water tank, the three-stage filtering system is sequentially provided with a rough filtering filter screen, a fine filtering filter screen and a self-cleaning filter screen in the flowing direction of cleaning liquid, and the self-cleaning filter screen is provided with a back washing spray head in a matched mode. Through full coverage of monitoring dimensions, various types of anomalies such as flow, concentration, corrosion, leakage and filter screen state can be identified, especially hidden anomalies such as early corrosion and trace leakage of a pipeline, equipment damage is avoided, early warning and response are automatic, occurred anomalies can be rapidly identified through real-time early warning, potential risks can be prompted in advance through pre-judgment early warning, and the early warning efficiency is improved. Automatic response can reduce manual intervention and improve cleaning efficiency.

The invention provides a power assembly and an electric vehicle, a shell of the power assembly comprises a first shell body, a second shell body and an oil passing groove, and a space defined by the first shell body and the second shell body is used for containing at least one of a driving motor or a speed reducer of the power assembly. The end face, in the axial direction of the driving motor, of the first shell is connected with the second shell. The oil passing grooves are distributed in the end face of the first shell, and the second shell is used for sealing the oil passing grooves. The oil passing groove is used for transmitting oil to the containing groove of the shell of the power assembly through the oil outlet hole of the oil passing groove. The containing groove is used for containing at least one of a coarse filter, an oil pump or a fine filter of the power assembly. The oil outlet hole penetrates through at least one of the groove wall or the groove bottom of the containing groove. According to the power assembly, the oil passing groove used for transmitting oil is formed in the end face of the first shell, the oil passing groove can replace part of an internal oil duct of the power assembly, and the negative influence of the internal oil duct formed through machining on oil transmission can be reduced.

The invention discloses a vacuum oil filter, and relates to the field of oil filters, the vacuum oil filter comprises a coarse filter barrel, and a filter plate I and a filter plate II which are symmetrically and movably arranged at the upper end in the coarse filter barrel, and the opposite side surfaces of the filter plate I and the filter plate II are both provided with scraping mechanisms; a transmission mechanism driving the scraping mechanism to operate penetrates through the middle of the scraping mechanism, and a motor providing driving force for the transmission mechanism is fixedly arranged at the top end of the transmission mechanism. A first rotating shaft is driven by a motor to rotate, a first sliding block and a second sliding block are driven to slide along a first guide groove and a second guide groove correspondingly, and a second sliding rod generates axial reciprocating motion and intermittent rotation; the scraping rod and the scraping block rotate to scrape oil sludge on the surfaces of the first filtering plate and the second filtering plate, impurities are sucked into the filtering box through a negative pressure channel formed by the fixing block, the cavity in the side wall of the scraping rod, the hose and the inner cavity of the roller, automatic cleaning and impurity transferring of the filtering plates are achieved, and blocking is effectively prevented.

The utility model discloses a purification device for cosmetic production, and relates to the technical field of cosmetic purification, the purification device comprises a purification box, a filter cartridge is arranged in the purification box, a disassembly assembly is arranged outside the filter cartridge, the disassembly assembly comprises two fixing blocks and two connecting blocks, the two fixing blocks are fixedly connected with the interior of a purification box, the two connecting blocks are fixedly connected with the outer surface of a filter cartridge, the interiors of the two fixing blocks are slidably connected with the outer surfaces of the two connecting blocks, and two supporting plates are fixedly connected to the inner wall of the purification box. Through cooperation of the purification box, the filter cartridge, the dismounting assembly and the opening and closing door, limiting of the filter cartridge can be quickly relieved, a rough filter layer, a middle filter layer and a static filter layer can be taken down to be cleaned after the filter cartridge is taken out from the interior of the purification box, convenience and rapidness are achieved, the dismounting effect is greatly improved, and it is guaranteed that cleaning is sufficient and thorough.

The invention relates to the related technical field of health information monitoring, and discloses integrated health information monitoring equipment and a use method thereof, the equipment comprises a monitor body, and the monitor body is internally provided with an air inlet end, a processing assembly, a condenser, a sensor, a fan and an air outlet end in sequence. The treatment assembly comprises a shell, a cavity unit capable of rotating in the circumferential direction is arranged in the shell, a baffling channel is formed in the cavity unit, and a filtering assembly with a filtering state and a cleaning state is arranged on the baffling channel. The filtering assembly comprises a first arc-shaped filtering plate forming a rough filtering unit and a second arc-shaped filtering plate forming a fine filtering unit. The cavity unit is driven by the driving assembly to rotate, so that the filtering assembly is switched between the filtering station and the cleaning station; the filter resistance change is detected through the differential pressure detector, and when the filter assembly is located at the cleaning station, the cleaning assembly applies reverse airflow to the filter assembly for cleaning.

The utility model discloses a rough filtration structure of a gearbox of a backhoe loader. The rough filtration structure comprises a box body, a rough filter, a bolt, a spring washer, a paper pad, an O-shaped ring and an oil suction pipe, the rough filter comprises an outer cover plate, a magnet, a filter screen and an inner end cover, all the parts are firmly bonded through high-strength glue, the rough filter is locked at the bottom in the box body through four sets of bolts and spring washers, and a paper pad is assembled between the rough filter and the box body to ensure sealing; a fixing plate is welded to the upper end of the oil suction pipe and locked on the box body through two sets of bolts and elastic pads, a baffle is welded to the lower end of the oil suction pipe, and O-shaped rings are assembled between the upper end and the lower end of the oil suction pipe and the rough filter so as to ensure sealing. The filter screen is simple and compact in structure, good in filtering effect and convenient to maintain, and solves the problems that a circular plane filter screen in the prior art is poor in filtering effect, the surface of the filter screen is easily blocked by foreign matters and is difficult to maintain and clean, so that a pressure reducing valve and an electromagnetic valve are blocked, and a gearbox has no gear.

The utility model relates to the technical field of air purification, and discloses an air sterilization device which comprises a device body, pulling handles are arranged on the two sides of the device body, mounting grooves are formed in the front end and the rear end of the device body, supporting blocks are arranged on the two sides of the interior of the device body, and a sterilization block is arranged in the middle of the inner side of the device body. A stable side block is arranged on the inner side surface of the sterilization block; a coarse filter plate is arranged at the top end of the stable side block; a fitting top plate is arranged at the top end of the sterilization block; a device top plate is arranged at the top end of the device main body; a fixing rotary knob is arranged on the inner side of the attaching side block, an air inlet pipe is arranged at the top end of the device top plate, a draught fan is arranged on the inner side of the air inlet pipe, fine filter plates are arranged at the front end and the rear end of the device body, and the device body and the fine filter plates are arranged, so that the device is convenient to disassemble, overhaul and replace.

The utility model belongs to cutting fluid processing equipment technical field especially relates to a kind of cutting fluid circulation purification utilization device for coupling machining, including workbench, the middle position of workbench is equipped with waste liquid outlet, the bottom of workbench is equipped with filter box, and compression mechanism, oil dirt removal mechanism and fine filter mechanism are equipped in filter box.The cutting fluid circulation purification utilization device for coupling machining, by the design of compression mechanism, can be extruded after the treatment of the fluffy debris after rough filtration, while the volume of extruded debris is smaller, reduces storage and transportation cost, improves the convenience and recovery rate of waste scrap recycling, the inclined design of rough filter plate also improves rough filtration effect, simultaneously, the centrifugal treatment of oil dirt removal mechanism and air floatation method combined fine filter mechanism can more effectively remove oil dirt and small impurities in cutting fluid, significantly improve purification degree, prolong the service life of cutting fluid, reduce cost, also can improve coupling machining precision and surface quality, enhance product competitiveness.

The utility model provides a recycling device of hydraulic fluid in casing die casting process, including main part, the top fixed connection of main part has filter cooling assembly and hydraulic assembly, the side fixed connection of main part has control assembly. The utility model discloses through utilizing the liquid level sensor and temperature sensor set up in oil tank interior, can be used for real -time monitoring the liquid level and temperature of hydraulic fluid, and Y type filter and high -precision filter core can be in front of hydraulic fluid entering hydraulic system, to the hydraulic fluid carries out rough filter and fine filter to remove impurity and particulate matter, ensure the cleanliness of hydraulic fluid, utilize the cooperation of circulating fan and tubular heat exchanger, can through cooling water or air to hydraulic fluid carries out cooling, circulating fan is used for accelerating the cooling process, keeps hydraulic fluid in the suitable working temperature range, through multistage filtration and cooling system, effectively prolongs the service life of hydraulic fluid, reduces the replacement frequency, reduces production cost.

A mine wastewater recycling treatment system, including filter box, filter box top end is equipped with rough filter assembly, filter box bottom end is symmetrically connected and communicated with the shunt hopper, the shunt hopper is equipped with aeration assembly, two shunt hoppers are fixed between the partition, the both sides of filter box are symmetrically fixed with the sedimentation tank, the open end of sedimentation tank is fixed with the first screen, the first screen is equipped with the telescopic plate assembly, the gap between the open end vertex of sedimentation tank and telescopic plate assembly, one end of telescopic plate assembly is movably connected with the side wall of sedimentation tank, the reciprocating transmission assembly is arranged in the partition, the end of two telescopic plate assemblies away from the sedimentation tank is movably connected with the reciprocating transmission assembly, the bottom of two shunt hoppers is fixedly connected and communicated with a mixing tank, the double-shaft motor is fixedly installed on the top surface of mixing tank, any output shaft of double-shaft motor extends into mixing tank and is fixedly connected with stirring assembly, the other output shaft of double-shaft motor is fixedly connected with reciprocating transmission assembly, the filtering efficiency of wastewater is improved, and the impurities are collected conveniently.

The utility model discloses a microbial pesticide preparation filtering device which comprises a filtering tank, a rough filtering assembly and a fine filtering assembly, the rough filtering assembly and the fine filtering assembly are both installed in an inner cavity of the filtering tank, the rough filtering assembly is located at the top of the fine filtering assembly, and a sealing cover is installed at the top of the filtering tank. Supporting legs are fixedly mounted at the bottom of the filtering tank, and a liquid outlet pipe is arranged at the bottom of the filtering tank; the flushing assembly is installed in an inner cavity of the filtering tank, the fine filtering assembly is flushed through the flushing assembly, and a blow-off pipe used in cooperation with the flushing assembly is installed on the surface of the filtering tank. Through cooperation of the rough filtration assembly and the fine filtration assembly, double-layer filtration of a microbial pesticide solution is achieved, the filtration effect is improved, meanwhile, the flushing assembly is matched to flush and decontaminate the fine filtration assembly, and the filtration efficiency of the fine filtration assembly is improved.

The invention discloses integrated dust treatment equipment and a treatment method, and belongs to the technical field of industrial dust treatment equipment. Comprising a docking mechanism, a filtering mechanism and a linkage mechanism, rigid linkage is formed between a turbine structure of a gas inlet pipe opening and a purification part through a belt wheel system, after dust-containing waste gas enters a turbine cylinder, a turbine paddle is naturally impacted to rotate, a first belt wheel at the shaft end of the turbine paddle transmits power to a second belt wheel outside a first purification part through a synchronous belt, and a conical cylinder type coarse filtering cylinder is directly driven to rotate at a high speed; a linkage mechanism is used for constructing a waste gas kinetic energy-mechanical power conversion closed loop, the energy consumption mode that traditional dust removal equipment depends on external power source driving is changed, kinetic energy carried by waste gas is fully recycled, dual optimization of energy saving and efficiency is achieved, and a brand new path is provided for low-carbon development of industrial dust removal equipment.

The utility model discloses an engine oil coarse strainer with a dismounting structure, which comprises an engine oil strainer component, a scraping structure is fixed on the engine oil strainer component and is used for assisting in cleaning, the dismounting structure is mounted on the engine oil strainer component in a dismounting manner, the engine oil strainer component comprises a coarse strainer shell, and a first strainer is mounted in the coarse strainer shell in a dismounting manner. According to the engine oil coarse filter screen with the detachable structure, large-particle impurities in oil liquid are pretreated through the first filter screen, the service life of the filter screen body is prolonged, the filter screen body is not prone to falling off, the filter screen body is not prone to falling off, the filter screen body is not prone to falling off, and the service life of the filter screen body is prolonged. After pretreatment, impurities on the surface of the first filter screen are directly scraped and cleaned through a first connecting rod, a second connecting rod and a scraping plate, and through the arrangement of a base, an oil leakage screen, an oil outlet pipe, a second sealing cover, a connecting base and a filter paper screen body, the oil leakage screen and the filter paper screen body are detachably mounted.

The utility model discloses a corrosion-resistant vacuum solid-liquid separation oil mist filtering and purifying device which comprises a supporting frame, an oil inlet pipe is arranged on the supporting frame, one side of the oil inlet pipe is connected with a coarse filter, one side of the coarse filter is connected with a vacuum tank, one side of the vacuum tank is connected with a fine filter, and the fine filter is connected with a vacuum pump. One side of the fine filter is connected with an oil outlet pipe; the utility model relates to the technical field of oil mist filtration and purification, in particular to a corrosion-resistant vacuum solid-liquid separation oil mist filtration and purification device, through a rough filtration-vacuum water removal-fine filtration three-stage purification system, the solid residual quantity is reduced, a cleaning control assembly integrates rotary bristles and negative pressure linkage, dynamic cleaning of spray holes of an atomizer is achieved, the blocking rate is reduced, and the oil mist filtration and purification efficiency is improved. The temperature of the vacuum heating module is accurately controlled to 75 DEG C, the condensation tank is combined to quickly separate water vapor, and the negative pressure unit is modularized, so that the maintenance period is prolonged, the energy consumption is reduced, secondary pollution is completely eradicated through a full-process closed structure, and the system is suitable for high-precision industrial scene requirements.

The utility model relates to a device for gas-liquid separation belongs to hydrogen fuel cell engine hydrogen supply circulation system's gas-liquid separation technical field, aiming at the problem that separation efficiency and system resistance are difficult to balance in prior art, cannot give consideration to different particle size droplet separation and impurity gas discharge, the device includes upper casing and lower casing, the upper casing is divided into rough filter cavity and fine filter cavity through vertical partition, is equipped with radial guide component and I -shaped impact separation component in rough filter cavity, is equipped with cyclone separator with inner cylinder in fine filter cavity, and lower casing forms water collecting cavity, gas-liquid mixture is guided to impact separation component and separates big droplet after being guided to guide component, enters cyclone separator and separates small droplet through centrifugal force, and separated liquid converges into water collecting cavity, and the outlet cavity passes through hydrogen concentration sensor control impurity gas discharge, the utility model realizes different particle size droplet high -efficient separation, reduces system resistance, guarantees that hydrogen purity meets the requirement, promotes hydrogen recycling rate, is applicable to hydrogen fuel cell engine hydrogen supply circulation system.

The utility model discloses a spinning manifold air conditioner cooling system which comprises a fresh air mixing cavity, a coarse filter bag, a spraying chamber, a side blower chamber and an air duct, a flow dividing chamber is arranged between the air duct and the side blower chamber, a partition plate is arranged in the flow dividing chamber, the flow dividing chamber forms a first cavity and a second cavity through the partition plate, and the first cavity and the second cavity are communicated through the coarse filter bag. Opening and closing doors are arranged at inlets and outlets of the first cavity and the second cavity, a surface air cooler is arranged in the first cavity, and fresh air blown out of the side air blowing chamber forms two air channels through the flow dividing chamber. The problems that dust and spraying scale are attached to the surface of an existing surface air cooler in winter, blockage is caused, and the refrigerating effect in summer is affected are effectively solved, and the surface air cooler can adapt to different environments.

The utility model provides a filtering device and a water purifier including the same, wherein the filtering device comprises a rough filtration filter element, an RO / NF filter element, a storage assembly and a softening assembly, the water inlet end of the rough filtration filter element is communicated with a water source, the water outlet end of the rough filtration filter element is communicated with the water inlet end of the RO / NF filter element, the water outlet end of the RO / NF filter element is respectively communicated with the storage assembly and a first user side, and the softening assembly is communicated with the storage assembly. The storage assembly is used for storing wastewater generated after filtration of the RO / NF filter element, the water inlet end of the softening assembly is communicated with the water outlet end of the storage assembly, the softening assembly is used for softening the wastewater, and the water outlet end of the softening assembly is communicated with a second user side; wherein the rough filtration filter element comprises a polypropylene melt-blown filter element. Large-particle impurities and suspended solids in water can be removed through the rough filtration filter element. And the water subjected to rough filtration treatment flows into the RO / NF filter element to ensure that the effluent quality reaches a high standard. After wastewater generated in the filtering process of the RO / NF filter element is treated by the softening assembly, the water quality is improved.

The application discloses a marine methanol fuel supply system, which comprises a methanol daily tank, a coarse filter group, a methanol supply pump, a degassing tank, a methanol circulating pump, a heat exchange unit and a fine filter group which are sequentially connected through a methanol supply pipeline system; the fine filter group is externally connected with a methanol consumption device; the marine methanol fuel supply system further comprises a first control panel and a second control panel; the methanol daily tank is used for storing methanol fuel and is provided with a high liquid level switch and a low liquid level switch which are used for monitoring the liquid level of the methanol fuel in the methanol daily tank; the coarse filter group and / or the fine filter group are redundantly designed and each comprises at least two filter components which are connected in parallel with each other; the filter components are provided with a self-cleaning mechanism which comprises a cleaning brush and a driving mechanism; when a filter component on one side which is in a standby state performs a self-cleaning operation, the cleaning brush starts to rotate under the driving of the driving mechanism, and impurities adhered to the inner surface of the filter screen can be removed.

The utility model discloses cleaning equipment for handicraft processing, which relates to the technical field of handicraft processing and comprises a water tank and a collecting tank, a water pump is arranged on the water tank, a water inlet of the water pump is communicated with the water tank, and a flushing hose is arranged on a water outlet of the water pump; a rough filter plate is arranged on the top of the water tank, a fine filter tank is inserted into the top of the water tank, a fixing frame is inserted into the top of the fine filter tank, and artware is cleaned above the rough filter plate through a flushing hose, so that large-particle impurities are left above the rough filter plate, small-particle impurities are left on the fine filter tank, and then cleaning water can be recycled into the water tank, so that recycling is facilitated, and water resources are saved.

The utility model relates to a kind of self-cleaning vacuum pump front filter system, belong to front filter technical field.It include rough filter tank assembly, liquid storage tank assembly and rack assembly, the rough filter tank assembly include first pipeline length compensator, second pipeline length compensator, material box connecting pipeline, rough filter tank, liquid cleaning electromagnetic valve, gas backflushing electromagnetic valve, vacuum pump pipeline, vacuum pump pipeline butterfly valve, vacuum pump connecting flange, liquid storage tank connecting flange and filter core, the external material box connecting flange is connected with user place material box, the first pipeline length compensator is connected with external material box connecting flange and material box connecting pipeline, the material box connecting pipeline is connected to the lower part of rough filter tank, the upper part of rough filter tank is connected vacuum pump pipeline, vacuum pump pipeline is installed vacuum pump pipeline butterfly valve on.The advantage: it has high efficient filtering capacity, can intercept all kinds of size impurities accurately;It is easy to maintain, has self-cleaning function, can reduce maintenance cost and downtime.

The application provides a water purification system and a water purifier. The water purification system comprises: a water inlet channel for inputting raw water; a pre-filtering filter element having a raw water inlet and a rough filtering water outlet, the raw water inlet being connected with the water inlet channel and used for rough filtering raw water output by the water inlet channel; a fine filtering filter element having a first water inlet and a first pure water outlet, the first water inlet being connected with the rough filtering water outlet and used for fine filtering rough filtering water output by the pre-filtering filter element; a post-filtering filter element having a second water inlet and a second pure water outlet, the second water inlet being connected with the first pure water outlet and used for filtering pure water output by the fine filtering filter element; a first pure water channel connected with the second pure water outlet and used for outputting pure water; and a domestic water channel connected with the rough filtering water outlet and used for outputting rough filtering water. The water purification system realizes the dual functions of direct drinking water supply and domestic water supply.

The invention discloses a heavy metal-containing wastewater treatment device, and relates to the technical field of wastewater treatment.The device comprises a base, a fine filter box, a water diversion bin, a sealing cylinder, a settling box and a rough filter tank, a driving assembly drives a circular plate in the sealing cylinder to move up and down, and compressed gas is generated; the water pressing assembly generates compressed gas through up-down movement of a circular plate in a sealing cylinder, the gas pushes a piston plate through a first gas pipe to drive a pressing plate to move downwards, pulse type pressure is applied to water in a fine filtering box, traditional gravity or low-lift water pump driving is replaced, water flow membrane penetrating power is improved, water flow is forced to rapidly penetrate a filtering membrane, and the filtering rate is increased; gas drives the first telescopic rod and the second telescopic rod to stretch out and draw back through the second gas pipe and the flow dividing pipe and drives the mounting frame and the filtering membrane to move up and down, fine particles attached to the surface of the membrane can be shaken off in time, a filter cake layer is prevented from being formed, the blocking risk is further reduced, and the filtering rate is kept at a high level.

The utility model relates to the technical field of hot melt adhesive production, and discloses an improved hot melt adhesive filtering device which comprises a filtering barrel, the upper end of the filtering barrel is connected with a cover plate through a fixing assembly, a motor is installed at the upper end of the cover plate, and the driving end of the motor is fixedly connected with a rotating shaft. The inner wall of the filter barrel is slidably connected with a coarse filter plate and a fine filter plate respectively, the middle parts of the coarse filter plate and the fine filter plate sleeve the outer wall of a rotating shaft, the outer wall of the rotating shaft is fixedly connected with two groups of flexible scrapers, and the lower ends of the two groups of flexible scrapers are in contact with the upper end of the coarse filter plate and the upper end of the fine filter plate respectively. According to the utility model, through the combination of the coarse filter plate and the fine filter plate and the dynamic cleaning of the scraper, impurities with different particle sizes can be effectively intercepted, and the blockage of the filter screen is reduced, so that the filtering efficiency and the filtering effect are improved, and the cover plate is opened and closed in an auxiliary manner through the hydraulic rod and the telescopic rod, so that internal filtering parts are convenient to clean and replace, and the maintenance difficulty is reduced.

The application discloses a construction method and device of a rough filter simulation model and a rough filter efficiency determination method. The method comprises the following steps: acquiring initial structures containing initial structure parameters; wherein the initial structures comprise an air inlet simulation structure, an air outlet simulation structure and a dust outlet simulation structure; receiving structure parameter adjustment instructions for the structures, adjusting the initial structure parameters based on the structure parameter adjustment instructions to obtain target structures containing target structure parameters; and combining the target structures to obtain a constructed rough filter simulation model. The technical scheme disclosed in the embodiment of the application improves the applicability of model construction, thereby improving the reliability of testing.

The utility model relates to the field of biomedical technology, and disclose multi -passage liquid -based cell collection and separation filter kit;Including box body and connecting pipe, the outside of connecting pipe is fixed with support frame, the inside of support frame is provided with dismounting assembly, the one side of dismounting assembly is provided with clamping ring, the one end of connecting pipe is linked with collecting pipe;The utility model discloses through pressing multiple groups of pressing type hose simultaneously, drives the collection head to be through sample pipe and make sample be drained to the flow guide pipe through the flow guide type hose quickly, then imports the filter pipe from the flow guide pipe, realizes multi -passage parallel collection, greatly promoted sample collection efficiency, after sample enters filter pipe, passes through rough filter screen, middle filter screen and fine filter screen in proper order, and rough filter screen effectively intercepts the large particle impurity in sample, and middle filter screen further filters cell mass, and fine filter screen then accurate capture target cell, reach the fractional separation of cell, ensure the accuracy and reliability of subsequent detection.

The utility model relates to the technical field of smoke dust treatment, in particular to a spraying type smoke dust treatment mechanism which comprises a shell, an air inlet pipe is arranged at the bottom of the shell, and an air outlet pipe is arranged at the top of the shell; a coarse filter is arranged in the shell, the coarse filter is arranged on the upper side of the air inlet pipe, a fixing block is fixedly arranged in the shell, the fixing block is annularly arranged along the inner wall of the shell, a dust removal cavity is formed by the fixing block and the coarse filter, and a plurality of nozzles are fixedly arranged on the fixing block, annularly arranged and communicated with the water supply assembly. Through the arrangement of the coarse strainer and the dust removal cavity, when smoke dust in the air inlet pipe flows to the coarse strainer, the coarse strainer carries out primary dust falling treatment on the smoke dust, then the smoke dust subjected to primary treatment flows to the dust removal cavity, and dust removal liquid of the spray head reciprocates in the cavity to form a plurality of liquid levels so as to capture the smoke dust, so that the smoke dust is inhibited, and the dust removal effect is improved.

The invention discloses an ammonia gas supply system for an engine laboratory, which relates to the technical field of engine testing and comprises a main gas supply pipeline, a parallel bypass, a nitrogen purging unit and a safety relief unit. A coarse filter, an emergency shut-off valve, a multi-stage pressure reducing valve, a gas ammonia cooler, a mass flow controller and a fine filter are sequentially arranged on the main gas supply pipeline in the gas flow direction, and ammonia gas in a chemical plant storage tank is supplied to a laboratory engine after being treated. The parallel bypass is connected with the gas ammonia cooler in parallel, and a gas supply path can be switched. The mass flow controller is in signal connection with an engine ECU, and high-precision closed-loop control over the ammonia flow is achieved. The nitrogen purging unit is used for purging a pipeline, and the safe discharge unit is connected to the water spraying absorption tower and is used for safely treating discharged ammonia gas. According to the invention, continuous, stable, safe, accurate and controllable ammonia gas supply is realized through an external concentrated gas source.

The application relates to the technical field of spray masks, in particular to a preparation device and method of a zinc-containing low-deuterium water mask liquid and application, which comprises a stirring pot, a health water purifier is connected to the stirring pot, and a feeding opening is arranged on the stirring pot; a conditioning tank for mixing with low-deuterium water is connected to the output end of the stirring pot; a rough filter tank and a fine filter tank are sequentially connected to the output end of the conditioning tank; the rough filter tank and the fine filter tank are respectively connected with an intermediate circulating water tank through circulating pipelines; and the intermediate circulating water tank is provided with an intermediate water pipeline leading to the stirring pot. The device and method have the advantages of continuous operation, high generation efficiency, good economy, large treatment capacity and good stability, and can be applied to spray mask liquid products.

The utility model discloses a coking furnace waste gas purification device, which relates to the field of coking furnace waste gas treatment and comprises a shell capable of accommodating waste gas, a rough filtration unit and a fine filtration unit which are distributed from top to bottom are arranged in the shell, and the waste gas flowing into the shell is discharged after sequentially penetrating through the rough filtration unit and the fine filtration unit. The rough filtering unit comprises a parallel filtering part, arc-shaped filtering parts arranged at the two ends of the parallel filtering part and a first mounting frame for connecting the two arc-shaped filtering parts and the parallel filtering part, and a pair of cleaning scrapers capable of moving in opposite directions is arranged on the parallel filtering part. Through the combined arrangement of the rough filtration unit and the fine filtration unit, the multi-stage filtration device has the advantage of multi-stage filtration, and the impurity removal effect is improved. And a pair of cleaning scraping plates arranged on the rough filtration unit can move impurities into the arc-shaped filtration part. The surface of the parallel filtering part is in a smooth state, so that the blockage phenomenon caused by accumulation of impurities on the surface of the parallel filtering part is effectively avoided.