512results about How to "Guaranteed Filtration Efficiency" patented technology

The invention discloses a composite filter material for a heat-setting-free pleated filter cartridge and a processing method of the composite filter material. The composite filter material is prepared by taking paper made of plant fibers, synthetic fibers and glass fibers as a base material, and compounding the base material and a polypropylene (PP) or polytetrafluoroethylene (PTFE) synthetic fiber filter film by adopting hot melt adhesive, liquid glue or an ultrasonic composite method. The paper made of the plant fibers, synthetic fiber materials and glass fibers serves as the base material, and the prepared material is a novel composite filter material which is low in airflow resistance, high in tensile strength, diversified in varieties, convenient to fold, wide in application range and excellent in overall performance.

The invention discloses a compound photocatalysis antimicrobial coating air filter material and a preparation method thereof. The method is as follows: respectively preparing nano titanium oxide collosol, nano zinc oxide collosol and nano copper-nickel compound metallic collosol; preparing compound photocatalysis antimicrobial finishing agent; in cationic waterborne polyurethane adhesive emulsion, firstly, adding nano copper-nickel compound metallic collosol, nano titanium oxide collosol and nano zinc oxide collosol, stirring, and then adding deionized water; at room temperature, stirring and dispersing to form stable emulsion compound photocatalysis antimicrobial finishing agent; preparing finishing agent accounting for 5-15 wt% of air filter material to be treated; adding deionized water until reaching 100%; adopting a continuous padding technology to perform dip coating classification to the filter material to be treated; and drying and backing. The invention solves the problems of unfavorable nano photocatalysis antimicrobial effect, single effect and poor laundering durability, and improves the laundering durability of compound coating.

The invention provides an unpowered automatic cleaning laminated filter, which comprises a shell and a filter element, wherein the shell is a cylinder with end covers at two ends; a water inlet and a water outlet are arranged on the two end covers or at positions close to the end parts of the cylinder; the filter element consists of a group of hollow filter discs and a water outlet core pipe; the hollow filter discs are sleeved on the water outlet core pipe; a distance is kept between each two adjacent hollow filter discs; the effluent of the hollow filter discs flows into the water outlet core pipe; and one end of the water outlet pipe is closed, while the other end is provided with a water outlet, which is connected with the water outlet of the filter or directly serves as the water outlet of the filter. The filter also has a washing device which comprises a cleaning brush holder, a cleaning brush, a driving device and a mounting frame, wherein the mounting frame is connected with the driving device; the cleaning brush is fixed on the mounting frame; the head of the cleaning brush is positioned on the surface of the annular filter discs; and the cleaning device is driven by the driving device to rotate to realize the cleaning of the filter discs. The filter can be used for filtering ship ballast water, cooling water and the like.

The invention provides a domestic sewage separator, which comprises a cuboid sewage treatment box, wherein a filtering plate is arranged in the sewage treatment box in an inclined way; filtering holes are uniformly distributed in the filtering plate; a stirring and scraping device is arranged above the filtering plate; a hole cleaner comprises a hole cleaning tube, bearing support trolleys, inclined rails, a rope, a winch and pressure sensors; the two inclined rails are symmetrically arranged in the sewage treatment box, and are arranged under the filtering plate in parallel; bulges are arranged on the hole cleaning tube; the two ends of the hole cleaning tube are arranged on the bearing support trolleys through a rotating shaft; the bearing support trolleys are glidingly arranged on the inclined rails; one end of the rope is connected with the bearing support trolleys, and the other end of the rope is connected with the winch after bypassing a pulley; the pressure sensors are arranged at the top end and the bottom end of the inclined rails; a bottom plate is arranged in the sewage treatment box in an inclined way. The domestic sewage separator has the advantages that the structure is compact and reasonable; the sewage filtering effect is good; insoluble garbage sundries can be effectively separated; sundry residues in the filtering holes can be automatically cleaned.

The invention provides an efficient domestic sewage separation device, which comprises a hollow cylindrical sewage treatment tank with a cover plate at the top end, a filter vat, a stirring scraper and a hole cleaning barrel, wherein the filter vat is arranged at the center of the sewage treatment tank, filter holes are uniformly distributed in the side wall of the filter vat, a sundry opening is formed in the bottom of the filter vat and the top end of the filter vat is connected with a first rotating shaft; the first rotating shaft is driven by a first motor; the bottom of the sewage treatment tank is connected with the lower segment of the filter vat through an annular bottom plate which inclines towards the center of the inner side; the stirring scraper is arranged in the filter vat and comprises a second rotating shaft and a spiral plate arranged on the second rotating shaft; the second rotating shaft is driven by a second motor; and the hole cleaning barrel is arranged at one side of the filter vat, the top end is rotationally connected with the cover plate through a third rotating shaft and bumps matched with the filter holes of the filter vat are uniformly distributed on the side wall. The efficient domestic sewage separation device has the advantages that the structure is compact and reasonable, the sewage filter effect is good, insoluble waste sundries can be effectively separated, sundry residues in the filter holes are automatically cleaned and the filtering efficiency of the filter device is ensured.

The invention discloses a sample pumping and filtering apparatus, which is used for providing a sample pumping and filtering apparatus for automatically removing silt aggregated on the filter blanket surface, and effectively solves the problems that the silts aggregate in the gaps of a filter blanket which are difficult to remove and may cause filter blanket failure. The invention comprises vacuum-pumping equipment, a liquid storage container, an adaptive floating bearing apparatus, and a sample storage cavity, a self-cleaning cavity and a vacuum-pumping cavity which are arranged in the liquid storage container from up to bottom in order; the liquid storage container is provided with an upper and a lower interlayer, and the upper interlayer separates the sample storage cavity and the self-cleaning cavity, and the lower interlayer separates the self-cleaning cavity and the vacuum-pumping cavity. The upper interlayer is provided with a first water through hole. The lower interlayer is provided with a second water through hole, which is internally provided with filter blankets. The vacuum-pumping equipment is communicated with the vacuum-pumping cavity by vacuum-pumping pipeline. The top of the lower interlayer is provided with a vertical drainage channel, and the lateral surface of the liquid storage container is provided with a water outlet channel which is communicated with the vertical drainage channel. The vertical drainage channel is provided with a cylindrical valve core.

The invention discloses a filtering device used for gas-solid separation. According to the device, the deformation capability of a filtering element is between that of a rigid filter pipe and that of a flexible filter bag, so that compared with the flexible filter bag, the service life of the filtering element is prolonged; and compared with the rigid filter pipe, the axial vibration is generated by the filtering element to reinforce ash cleaning. The filtering device comprises a box body; the box body is internally provided with a pore plate; a plurality of external filtering type filter bags are arrayed on the pore plate, and one end of each external filtering type filter bag is opened and the other end of each external filtering type filter bag is closed; the opening ends of the filter bags are mounted on the pore plate and the closed ends of the filter bags are connected with elastic traction devices for axially tensioning the filter bags; and the filter bags are further internally provided with inner supporting assemblies for elastically tensioning the whole bodies of the filter bags in the radial direction. The filter bags are in an axial and radial bidirectional stretching state under the common effect of the elastic traction devices and the inner supporting assemblies; and the deformation capability of the filter bags can represent the intermediate state between that of a rigid filter element and that of a flexible filter element.

The invention provides a laminated filter with an automatic cleaning device. The laminated filter comprises a shell and a filter element, wherein the shell is a cylinder of which the two ends are provided with end covers; a water inlet and a water outlet are formed on the two end covers or close to the ends of the cylinder respectively; the filter element consists of a group of hollow filtering disks and a water outlet core tube; the hollow filtering disks are sleeved on the water outlet core tube; space is reserved between two adjacent hollow filtering disks; water from the hollow filtering disks flows into the water outlet core tube; one end of the water outlet core tube is closed, while the other end is provided with a water outlet which is connected with the water outlet of the filter or directly used as the water outlet of the filter; the laminated filter is also provided with a cleaning device which comprises a cleaning brush frame, a cleaning brush, a driving device and a mounting frame; the mounting frame is connected with the driving device; the cleaning brush frame is fixed on the mounting frame; the head of the cleaning brush is positioned on the surface of the annular filtering disk; and the cleaning device is driven to rotate by the driving device so as to clean the filtering disks. The laminated filter can be used for filtering the ballast water, cooling water and the like of ships.

The invention discloses a movable efficient formaldehyde removal and air purification device, which comprises a case, a case door, an air inlet, a filter cartridge, an air outlet, a base and a controlsystem, wherein the air inlet is formed in the side surface of the case, the air outlet is formed in the upper portion of the case, the control system is arranged at the bottom of the case, a drivingdevice is arranged on the base, and the filter cartridge is arranged in the case, is of a multi-layer structure and comprises a filter layer, an adsorption layer and a decomposition layer. By adopting a purification mode of multi-stage filtration, active carbon adsorption and decomposition of formaldehyde with manganese-based oxide, solid and gas pollutants in air can be efficiently purified at the same time, and formaldehyde is thoroughly decomposed into carbon dioxide and water; the air purifier can automatically move to purify multi-area air through movable and infrared induction so as toachieve the effect of one-machine multi-room and multi-area circulating continuous purification; and the movable efficient formaldehyde removal and air purification device is high in air purificationefficiency, good in formaldehyde removal effect, simple in structure, economical, environmentally friendly and suitable for productization and large-scale application and popularization.

The invention discloses a wastewater treatment device capable of detecting water quality on line. The wastewater treatment device comprises a shell as well as a sealing head and a sleeve respectively connected to two ends of the shell; the inside of the sleeve is horizontally sleeved with a water pipe joint; the end, far away from the sleeve, of the water pipe joint is connected with a water inlet pipe by a hose; the bottom of the water pipe joint is fixedly connected with a connecting frame; the bottom of the connecting frame is slidably connected to the upper part of a bottom frame; a mounting groove is formed inside the bottom frame; a first hydraulic column is horizontally mounted inside the mounting groove; and one end of the first hydraulic column is connected with one side of the bottom of the connecting frame. Coarse filter screens can be freely rotated and replaced, and different types of coarse filter screens can be used for different water quality conditions, so that the wastewater filtering efficiency can be guaranteed. Moreover, it is convenient and rapid to replace the coarse filter screens, the automation degree is high during replacement, the work efficiency is high, the precision is easy to control, and the connecting sealing performance is good.

The invention provides a sewage anti-blockage machine which comprises a filter bin and a backwashing bin communicated with the bottom surface of the filter bin, wherein a sewage inlet and a filtering water outlet are formed in the side wall of the filter bin; the horizontal position of a filter plate is arranged between the sewage inlet and the filtering water outlet; a through hole is formed in the center of the filter plate; a device for collecting and discharging impurities passes through the through hole and is vertically arranged in the filter bin; the device for collecting and discharging impurities comprises a water resistance part, a lower connecting rod and a plug which are sequentially connected from top to bottom; the lower end of the water resistance part is connected with a cylindrical filter screen which does not have a lower bottom wall; the size of the plug is matched with that of a communicating hole between the filter bin and the backwashing bin; the device for collecting and discharging impurities enters the backwashing bin through the communicating hole; the filtered water is used by a hot pump, the return water of the hot pump is used for carrying out backwashing on the inner wall of the filter screen, and the device for collecting and discharging impurities is reset to the initial position after backwashing. The sewage anti-blockage machine is simple in structure, is capable of collecting and discharging the impurities while guaranteeing the filter area and the filter efficiency, and is capable of continuously working.

The invention relates to the technical field of filtering devices, and discloses a cutting fluid filtering and recycling device. The cutting fluid filtering and recycling device comprises a feeding box, a recycling box and a storage box, wherein a first chart drum and a second chart drum are arranged on the recycling box; a rail is arranged in the recycling box, and filter paper is laid on the rail; a filtering net is arranged on the recycling box; a scraping plate is arranged on the recycling box, and a first spring is connected between the scraping plate and the recycling box; the first chart drum is coaxially connected with a gear; a second spring is connected between the feeding box and the recycling box; the feeding box is provided with a pawl; the recycling box is provided with a ratchet wheel coaxially connected with a fan gear; a guide pipe is arranged between the recycling box and the storage box in a communicating mode and provided with a pump; a turbine is rotationally connected inside the guide pipe; and a cam is arranged above the recycling box and coaxially connected with the turbine. By means of the cutting fluid filtering and recycling device, the problem that a cutting fluid filtering and recycling device in the prior art is poor in filtering effect, so that recycled cutting fluid is unqualified and can not be directly reused is solved.

The invention provides a domestic sewage treatment device. The domestic sewage treatment device comprises a column-shaped sewage treatment box, a water inlet pipe and a water outlet pipe, wherein an inverted conical filtering funnel is arranged in the sewage treatment box; a filtering paddle is arranged at the bottom of the inner side of the filtering funnel; the filtering paddle comprises at least two filtering blades which are symmetrically arranged; each filtering blade is arc-shaped; a scraping plate is arranged at the end part of each filtering blade; the bottom surface of each filtering blade is parallel with the conical surface of the filtering funnel; a hairbrush is arranged at the bottom of each filtering blade; a through hole is formed in the side wall, on which the filtering funnel is arranged, of the sewage treatment box; the bottom surface of the through hole is parallel with the upper plane of the filtering funnel; and a U-shaped stirring paddle is arranged at the center of the bottom in the sewage treatment box and is driven by a second motor arranged at the bottom of the sewage treatment box. The domestic sewage treatment device has the advantages that the filtering device and the stirring device are combined, so the structure is compact and reasonable; garbage sundries in the domestic sewage can be effectively filtered and the maintenance cost is reduced; and the garbage sundries on the filtering funnel can effectively rotate to be separated from the filtering funnel under the action of the filtering paddle, so the filtering efficiency of the funnel is guaranteed.

The invention belongs to the field of filtering materials and discloses a low-impedance high-efficiency air filtering material and a preparation method thereof. By the air filtering material and the preparation method thereof, resistance in operation of the air filtering material can be reduced while filtering efficiency is guaranteed, and energy consumption is reduced. The air filtering material comprises a base layer and a thin film layer, the thin film layer is fixedly connected to the surface of the base layer, the base layer is a nonwoven needled filter felt, and the thin film layer is a nano fiber nonwoven layer which is repeatedly and cyclically sprayed to the surface of the base layer by means of electrostatic spinning.

The invention discloses an organic substrate for cultivated crops and a preparation method of the substrate. The organic substrate for cultivated crops comprises the following components in parts by weight: 150-200 parts of plant organic matters, 5-10 parts of animal organic matters, 10-20 parts of fillers, 1-3 parts of microbial inoculums, 0-2 parts of pH regulators and 0-2 parts of EC regulators. The organic substrate for cultivating crops is obtained through high-temperature fermentation, can effectively remove germs, eggs and weed seeds, has rich nutrient components, can enhance the immunity of crops, and improve the quality and yield of the crops, thereby meeting the requirements of urban agriculture on shallow soil cultivation, simple configuration and convenient planting and maintenance, and particularly can effectively solve the problem of low yield caused by insufficient air permeability, water retention and colonization of the substrate when high temperatures and monsoons occur in summer in southern cities.

The invention relates to the technical field of fire protection, and discloses a sewage treatment device for fire protection, which includes a device body, a water inlet pipe is fixedly installed on the left side of the top of the device body, and a fixed plate is fixedly connected to the left side of the device body. A first motor is fixedly connected to the top of the fixing plate. Under the action of the first motor, the fire-fighting sewage treatment device can effectively crush the relatively large impurities and waste materials pumped into the water inlet pipe, avoiding the large impurities and waste materials from clogging the filter plate and affecting the flow of water. It can filter the crushed waste, and the filtered waste and silt leak into the bottom of the first partition through the leak hole for isolation, and can filter the smaller impurities and waste again. Under the action, it can clean the impurities and waste materials adhering to the filter net, avoiding the situation that the impurities and waste materials are filtered too much to block the filter net, and ensure the efficiency of equipment filtration.

The invention discloses a dust collecting device for dust of a magnet processing workshop. The dust collecting device comprises a dust collecting mechanism, a storage mechanism, an adsorption device,a cleaning mechanism, a dust detector I and a controller. The dust collecting mechanism comprises a dust collection chamber and a plurality of filter screens which are used for partitioning the dust collection chamber into a plurality of partitioned chambers. The adsorption device comprises a rod body, an electromagnet mounted on the rod body and a tensile force detecting device connecting the rodbody and the internal wall of the dust collection chamber. The cleaning mechanism comprises a plurality of cleaning brushes. According to the dust collecting device, through arranging the dust collecting mechanism and carrying out step-by-step filtering on the dust by using the partitioned chambers and the filter screens, the efficiency of collecting is high, and the circumstances that meshes ofthe filter screens are blocked up are reduced. According to the dust collecting device, through arranging the adsorption mechanism, the magnetic dust is adsorbed by using magnetism of the electromagnet and is collected through breaking a power supply of the electromagnet, and thus, the operation is convenient. According to the dust collecting device, through arranging the cleaning mechanism, the filter screens are cleaned by using the cleaning brushes.

The invention provides a membrane filtration technology for preparing xylitol from viscose fiber squeezed alkali solution. The technology is characterized by comprising the following steps: step A, membrane condensation: pre-filtering squeezed liquid generated during the viscose fiber production process so as to remove the large particle impurities, cyclically condensing the filtrate by a nano-filter membrane for 2 to 4 times, and transferring the last concentrate to a diffusion-dialysis cation exchange membrane stack so as to obtain the concentrate namely the concentrate of squeezed liquid, wherein the nano-filter membrane cyclic concentration is performed for 2 to 4 times, and before each filtration, the liquid should be diluted by water before being filtered by the nano-filter membrane; step B, semi-fiber extraction: adding acid into the concentrate of the squeezed alkali liquid to neutralize the concentrate so as to obtain a semi-fiber solution; step C, hydrolysis: adding diluted sulfuric acid into the obtained semi-fiber solution to carry out hydrolysis reactions; step D, purification: filtering the hydrolysate by a ceramic membrane, then filtering the filtrate by a nano-filter membrane to remove the salts, decoloring the concentrate by active carbon to obtain a purified solution of xylose; step E, hydrogenation: introducing hydrogen gas into the purified solution of xylose to carry out hydrogenation reactions in the presence of a catalyst namely nickel so as to obtain the xylitol.

The invention belongs to the technical field of kitchen appliances and provides an ultrasonic no-clean kitchen ventilator without a pipe. The kitchen ventilator includes a housing 1, a cooking fume filtering device 6, a cooking fume cleaning device 5, a draught fan 2 and the like. An air suction port 3 and a vent port 4 are formed in the housing 1, and when the draught fan 2 is started, cooking fume is sucked in from an air inlet 12, filtered by the cooking fume filtering device 6 and then discharged from the vent port 4. The housing 1 also internally includes the cooking fume cleaning device5 sleeving the cooking fume filtering device 6, and the function of automatically cleaning away the filtered cooking fume can be achieved to maintain the cleanness and cooking fume filtering efficiency of the cooking fume filtering device 6. The invention also provides a cooking fume filtering and removal method adopting the ultrasonic no-clean kitchen ventilator without a pipe, the cooking fume is directly filtered and removed, clean air is discharged, the installation, construction and maintenance costs of traditional kitchen ventilators and pipes are omitted, environmental pollution is notcaused, and the problem of manual cleaning is avoided.

The invention provides a multifunctional filter plate, a filter press provided with the multifunctional filter plate and a making method of the multifunctional filter plate. The multifunctional filter plate comprises a core plate of a flat plate structure, filter plate frames fixedly arranged at the outer edges of the left side and the right side of the core plate, electrode heating plates fixedly arranged between the core plate and the filter plate frames and a feeding hole penetrating through the electrode heating plates and the core plate in the left-right direction; a material filling cavity communicated with the feeding hole is formed between the inner circumferential surface of each filter plate frame and the outer side face of the corresponding electrode heating plate, each electrode heating plate is provided with a plurality of protruding parts which protrude outwards and are arranged in the corresponding material filling cavity, an inner water flow groove is formed in the inner side of each protruding part, the left outer side face and the right outer side face of the core plate are provided with a plurality of outer water flow grooves, the inner water flow grooves and the outer water flow grooves are communicated to form a heating cavity, and the electrode heating plates are connected with a power source through wires. Filter cakes in the material filling cavities can be subjected to heating dehydration and electrodialytic deep dehydration through the electrode heating plates, so that the moisture content of the filter cakes is further lowered.

The invention discloses vibration type filtering equipment for oil exploitation. The equipment includes a first box body, wherein supporting rods are fixedly connected to the side walls of the left end and the right end of the first box body; the upper ends of the two supporting rods are fixedly connected with a second box body; a feeding hole is formed in the top surface of the second box body; aslag outlet is formed in the side wall of the second box body; a first filtering mechanism is arranged in the slag outlet in a penetrating manner; one end, positioned in the second box body, of the first filtering mechanism is rotationally connected with the inner wall of the second box body; the driving of the first filtering mechanism penetrates through the bottom of the second box body in a sliding manner, a collecting tank is fixedly connected to the side wall of the second box body below the slag outlet, a first guide pipe is communicated with the bottom of the collecting tank, and a second guide pipe is communicated with the bottom of the second box body. According to the petroleum filtering device, petroleum can be filtered multiple times, the petroleum filtering effect is improved, the filtering net can be vibrated, the filtering net is prevented from being blocked, and the filtering effect is ensured.

The invention discloses a simple efficient solid fermentation device including a discharge port, a breathable material-supporting turnover plate, compressed air control valves, cloth material scraping paddles, a one-way exhaust valve, a motor, a top seat, a feed inlet, an outer cylinder body, an inner cylinder body, a stirring shaft, a first temperature measurement port, a second temperature measurement port, a thermal control device, a humidity instrument, an ultrasonic steam atomizing device and a disinfection device, wherein the motor is arranged at the upper side of the fermentation device through the top seat; the feed inlet is arranged at one side of the upper part of the fermentation device; the first temperature measurement port and the second temperature measurement port are respectively arranged at a middle part and a lower part of the fermentation device; the electric thermal control device is arranged below the first temperature measurement port; the humidity instrument is arranged at the lower part of the fermentation device; the ultrasonic steam atomizing device is arranged below the humidity instrument; the disinfection device is arranged at one side, opposite to the ultrasonic steam atomizing device, of the lower part of the fermentation device; porous regulating ventilation of compressed pure air is achieved through a plurality of compressed air control valves; the discharge port is arranged at the bottom of the fermentation device.

The invention discloses a machining cutting fluid filtering device containing various metal shavings, which comprises a permanent magnet, a box cover, a second valve, a filter screen, a third valve and a filter screen, and the permanent magnet is used to filter the cutting fluid The iron filings are adsorbed, and the cover is used to seal the iron filings filter box to prevent the cutting fluid in the iron filings filter box from splashing out and polluting the surrounding environment, which improves the practicability of the equipment. When other metal chips in the filter are filtered, the second valve is opened to allow the cutting fluid in the chip filter box to enter the first filter box through the second guide pipe. When the filter set in the first filter box reaches saturation, Firstly close the second valve, further open the third valve so that the cutting fluid in the iron chip filter box enters the second filter box through the third end of the first three-way pipe, and the cutting fluid is filtered by the filter set in the second filter box. Continue to filter.

The invention discloses a filtering device for recovering dust of a textile machine. The filtering device comprises a cylindrical shell which is horizontally arranged in the axial direction, a rotating rod positioned on the axis of the shell and three filtering plates positioned on the radial line of the shell, wherein an air inlet is formed in the lower portion of one side of the shell; an air outlet is formed in the upper portion of the same side of the shell; the air inlet is used for communicating with a collecting funnel; the air outlet is used for communicating with a fan; a collecting opening is further formed in the lower portion of the other side of the shell; the collecting opening is used for communicating with a collecting pipe; the rotating rod is rotationally mounted in the shell and is driven by an external motor; the three filtering plates are evenly and fixedly connected with the side edge of the rotating rod; the side, away from the rotating rod, of each filtering plate makes contact with the inner wall of the shell in a sliding seal mode; an inner cavity of the shell is equally divided into three spaces through the three filtering plates; and the three spaces communicate with the air inlet, the air outlet and the collecting opening respectively. The problem that the filtering efficiency of a single filtering plate is reduced along with the prolonging of working time is avoided.

The invention discloses a vehicle-mounted type sewage recycling system. The vehicle-mounted type sewage recycling system comprises a sewage tank, wherein a sewage collecting tube is arranged in the sewage tank; a sewage discharge valve is arranged at the bottom of the sewage tank; a vertical type filter system is fixed in the sewage tank; a spray rod with a high-pressure spray head is arranged at the inner part of the vertical type filter system and is connected with an external high-pressure water tube; a water outlet of the vertical type filter system is connected with a water inlet of a hollow fiber membrane assembly system through a sewage tube; a water pump system is arranged on the sewage tube; a water outlet of the hollow fiber membrane assembly is connected with two branches, one branch is connected with a regenerated clear water pipeline, and the other branch is connected with a concentrated water reflux pipeline; the concentrated water reflux pipeline is accessed into the sewage tank. According to the vehicle-mounted type sewage recycling system, a physical filter mode is adopted to effectively prevent secondary pollution in a sewage recycling process; and the amount and the quality of the circulated regenerated water are ensured because of effective lockage prevention of a classified filtering mode.

The invention relates to a high temperature-resistant polyaryloxadiazole nonwoven filter material and a preparation method thereof. The high temperature-resistant polyaryloxadiazole nonwoven filter material is prepared by blending 20-70wt% of a polyaryloxadiazole fiber with 30-80wt% of other heat resistant fibers. The polyaryloxadiazole fiber is added in the further blending of the original heat resistant fibers, so the filtering efficiency is guaranteed, and the continuous safe use performance of a filter felt in long-term high temperature environment is further improved. The filter felt and a filter bag made by adopting the filter material have higher cost performance than those made by adopting high temperature-resistant filter materials in the prior art.

The invention provides a desulfurization wastewater treatment system and a desulfurization wastewater treatment method. The desulfurization wastewater treatment system comprises a desulfurization device, a wastewater cyclone, a sand filtration system, a flue-type heat exchanger, an ultrasonic atomization device and a dust removing device, wherein the wastewater cyclone is used for solid-liquid separation of desulfurization wastewater; the sand filtration system is used for filtering the desulfurization wastewater; the flue-type heat exchanger is located in the inlet flue of the desulfurization device, and the desulfurization wastewater exchanges heat with high-temperature flue gas in the flue-type heat exchanger; the ultrasonic atomization device has a nozzle and atomizes the desulfurization wastewater to form droplets; the dust removing device has an inlet flue; the nozzle of the ultrasonic atomization device is arranged in the inlet flue of the dust removing device so as to allow the atomized desulphurization wastewater to be sprayed into the inlet flue of the dust removing device; the atomized desulfurization wastewater is dried by high-temperature flue gas, and inorganic salt particles are precipitated; and the inorganic salt particles enter the dust removing device and are then removed.

The invention relates to a preparation method of modified PPS (polyphenylene sulfide) yarn. The modified PPS yarn is fiber or yarn prepared after a short PPS fiber material is spun and modified with aliquid phase treatment agent. The special fiber and yarn material is prepared from the short PPS fiber modified with a chemical method and can adapt to the requirement of a high-temperature filter material technology. The material has good temperature resistance, corrosion resistance and oxidation resistance, and the filtration efficiency of a filter material is improved.

The invention discloses a sewage recycling device, and belongs to the technical field of sewage treatment. The problem that a filter net is easily blocked in an existing device can be solved. The sewage recycling device has the technical characteristic of comprising a bottom plate, a casing and a support table, wherein a support table is directly above the bottom plate, a rectangular through slotis formed in the center of the support table, and a casing is arranged in the rectangular through slot; a water inlet is formed in the upper surface of the casing, a filter chamber for filtering sewage is formed in the center of the casing, and the filter chamber communicates with the water inlet; and two circulating chambers are symmetrically formed in two sides of the casing, a filter assembly is disposed in the filter chamber, and a second stirring assembly is disposed under the filter assembly. The sewage recycling device has simple operation and high sewage treatment efficiency, and the height adjustment of the casing is convenient at the same time, so that sewage and a sewage treatment agent are fully mixed; and blockage caused by impurities on an activated carbon filter screen can be avoided through arrangement of an exhaust mouth, so that the filtration efficiency is ensured.