67results about How to "Large amount of dirt" patented technology

The invention discloses a high-flux high-dirt-holding-capacity filtering element, which comprises a filtering medium layer (3), a central tube (2), a shell (1) and upper and lower end covers (10, 11), wherein the filtering medium layer (3) is folded into an arc-shaped fold and then encloses the central tube (2), and the whole is cylindrical; the shell (1) is sleeved outside a cylindrical filtering medium; the filtering medium layer comprises a filtering layer (3b) and plastic net layers (8) which are positioned on two sides of the filtering layer; the filtering layer consists of at least two layers of filtering materials (3d); and the upper and lower ends of the central tube (2) and the shell (1) are fixedly connected with the upper and lower end covers. A high-flux folding filtering element is wide in runner, relatively low in fluid resistance, and more uniform in flow distribution of water inlet and outlet ends of the filtering element. Compared with the conventional W-shaped linear fold designing filtration membrane, the high-flux folding filtering element is improved by over 30 percent in terms of filling density, large in filtering area, high in total dirt-holding capacity and long in service life of the filtering element.

The present invention consists of tow node, tow ring in the middle part and tow tail. The tow ring and the tow tail are made of monofilament tow of plant fiber, hydrophilic synthetic fiber and / or hydrophilic artificial fiber. The tow node is solid or porous plastic, ceramic, rubber or metal body. The present invention is used for separating various suspension in water, especially separating suspended impurities containing oil or grease. The present invention has the advantages of great specific surface area, high filtering bed elasticity, high filtering material strength, long service life, high solid / liquid separating efficiency, great dirt tolerance and good back flush effect with low water consumption.

The invention relates to a filter material for water treatment, in particular discloses a hemp fibre filter wire and a preparation method thereof. The hemp fibre filter wire is characterized by being prepared by using hemp fibres as raw materials, spinning the hemp fibres into yarns through hemp spinning equipment and then degumming, bleaching, drying and forming. The invention is mainly used for the purification and the filtering of various liquids; a wire-wound filter core prepared by the hemp fibre filter wire is used for the precise filtering of the liquids in a petroleum industry, a chemical industry, an electron industry, a pharmaceuticals industry, a food industry, a domestic water industry, and the like; and in addition, the invention can bring new vitality for the water treatment industry due to excellent performance and complete green environmentally-friendly quality.

The invention discloses a lift pump station for sewage treatment. The lift pump station is mainly used for lifting sewage. In the device, a filtering and flow guiding device firstly filters the domestic sewage for solid-liquid separation, and it is avoided that because the domestic sewage directly flows through a pump, solid impurities in the sewage block the pump, and the pump can not operate normally. Solids and the impurities after filtering are precipitated at the bottom of the filtering and flow guiding device, the filtered sewage enters a water tank, and when the sewage in the water tank reaches a certain height, submerged type sewage pumps are started. At the moment, the sewage enters the filtering and flow guiding device again to clean a filter net in an all-around mode. The solids and impurities which are filtered and precipitated before are discharged from the pump station together with the sewage. Flow-guiding plates enable the sewage to clean the filter net in the more all-around mode, the filter net can not be blocked, and resistance of pipelines is reduced. The discharged sewage is prevented from flowing back to the water inlet pipeline to the maximum degree due to two non-return devices, and therefore the lift pump station can be safer. An even-mixing nozzle in a water outlet is used for flushing precipitates in the water tank, and then the precipitates are discharged through the pump.

The invention discloses a deep filter element with a crude and fine fiber mixed structure. The deep filter element at least comprises two filtering layers; each filtering layer comprises a crude fiberset and a fine fiber set which are interwoven with each other; the average diameter of the crude fiber set of each filtering layer is reduced from the outer side to the inner side; the average diameter of the fine fiber set of each filtering layer is reduced from the outer side to the inner side; the fiber diameter of the fine fiber set of the innermost filtering layer is not larger than 1 micrometer; the fiber diameter of the crude fiber set of the outermost filtering layer is not smaller than 5 micrometers. The invention further discloses a preparation method of the deep filter element withthe crude and fine fiber mixed structure. The preparation method comprises the following steps of: 1) melt spinning; and 2) receiving a finished screen. The crude coarse fiber sets play a role in bonding the fine fiber sets and play a role in supporting, and therefore, the filter element is prevented from being compressed in a using process, and a dirt containing amount is increased, the fine fiber sets play a role in filtering and intercepting, so that filtering precision is improved, and the filter element has the functions of high filtering precision, high dirt containing capacity and longservice life and is good in filtering effect.

The invention discloses a portable and hydrogen-rich ultrafiltration water purification cup. The portable and hydrogen-rich ultrafiltration water purification cup comprises a water cup body, wherein the water cup body is in threaded connection with a cap, and the bottom of the cap is in threaded connection with a filter element. For the filter element, PP cotton for first filtration is used for coarsely filter solid particles; medical stone for second filtration is used for improving water components; activated carbon for third filtration is used for removing peculiar color and odor; HaloPure for fourth filtration is used for killing bacteria in seconds; tourmaline for fifth filtration is used for performing microelectrolysis on water to produce hydrogen, oxygen and OH<->, and hydrogen enrichment, oxygen enrichment and alkalescence are realized; an ultrafiltration membrane for sixth filtration kills and removes all bacteria and fine granular impurities in water; for seventh filtration, water molecules are cut by infrared rays emitted by energy particles scattered on structural bodies of three inner casings, and small molecular state of filtered water is realized. The cup is portable and can directly filter and activate water, so that drinking safety is guaranteed, and a user can drink healthy water.

The invention provides a novel plasma filter device for treatment of acute cerebral infarction and filter method of the novel plasma filter device. The device comprises a shell and a filter element. The shell comprises an upper shell body and a lower shell body connected with the upper shell body. The upper shell body and the lower shell body form an accommodating space. The filter element is arranged in the accommodating space and comprises first filter films, a second filter film and a third filter film. The filter element is formed in the mode that the first filter film, the second filter film, the first filter film, the first filter film and the third filter film are arranged sequentially in the plasma flowing direction, wherein the first filter films are DELP films with a lipidosome and fibrinogen affinity adsorption function, the second filter film is an EKSP depth filtering film capable of adsorbing inflammatory factors and free radicals, and the third filter film is a 0.2 micrometer-thick film used for filtering out various granular substances with the hole diameter being greater than 0.2 micrometer. The novel plasma filter device for treatment of acute cerebral infarction and the filter method of the novel plasma filter device have the advantages that the plasma filter device can be used for filtering the plasma of an acute cerebral infarction patient.

The invention relates to quenching oil on line dewater unit. It includes oil feed control valve, backing stage filter, secondary filter, heater, anti-foaming machine, vacuum tank, pressure sensor, cooler, cooling fan, vacuum valve, vacuum pump, cistern, oil pump, and tertiary filter. The oil inlet is set oil feed control valve. The filter is set at the front and back of the heater. The anti-foaming machine is set at the front of the vacuum tank. Its upper is set cooler. Its inner is set pressure sensor. The vacuum valve is set at the front of the cooler. Its side is set cooling fan. Its lower is set cistern whose front and back are set vacuum valve. The lower of the vacuum tank is set the tertiary filter and oil pump. The unit can separate the water from the oil at vacuum by using the characteristic that the boiling point of the liquid is reduced with the lowering of the surface pressure. In addition, it has the advantages of fast impurity removing, on line running, low cost, safe, big quenching oil mass etc.

The invention relates to a combined polypropylene thermal spray fiber membrane folding type filter element which comprises a filtering medium layer, an inner supporting barrel and an outer supporting barrel, wherein the filtering medium layer is folded into fins and then wound on the outer circumference of the inner supporting barrel, the outer supporting barrel is sleeved at the outer side of a barrel formed by the filtering medium layer, the filtering medium layer is formed by overlapping three layers of polypropylene thermal spray fiber membranes and two protective layers, wherein the three layers of the polypropylene thermal spray fiber membranes are adjacently connected in sequence, the protective layers are respectively arranged at the upstream side and the downstream side of the polypropylene thermal spray fiber membrane, and the adjacent fins are in welding connection. Since the three layers of polypropylene thermal spray fiber membranes are arranged in the filtering medium layer of the folding type filter element, the fiber membranes are protected by using the long-fiber nonwoven fabrics at both sides of the folding type filter element, the dirt holding capacity of the filter element is increased, particles are gradually intercepted from the large size to the small size, the pollution resistibility of the filter element is improved, and the filtering precision and the efficiency of the filter element are ensured, thus the service life of the filter element is greatly prolonged, and the quality of a filtered liquid product is guaranteed to be stable.

The invention relates to a novel pipeline filter, which consists of an inlet channel, a cylinder body, a first handle, a filter screen, a U-shaped groove, an adapter pipe, a filter basket, a flange cover, a transverse channel, a transverse baffle body, a second handle and an outlet channel. The left end and right end of the cylinder body are the inlet channel and the outlet channel respectively, the first handle is connected to the filter screen, the lower end of the cylinder body is provided with the adapter pipe, the adapter pipe is internally provided with the filter basket, the bottom of the adapter pipe is equipped with the flange cover, the transverse channel is disposed inside the lower part of the cylinder body, the transverse channel is internally provided with the transverse baffle body, and the right end of the transverse baffle body is connected to the second handle. The novel pipeline filter provided by the invention has the advantages of simple making, advanced structure, convenient installation and cleaning, large pollutant holding capacity, small resistance, convenient pollution discharge, wide application range, simple operation during cleaning and the like. During cleaning, the normal use is not affect, thus avoiding bringing unnecessary trouble to people's life.

The invention relates to a filter, especially to a disc-type micro-filter and its filtering method. The disc-type micro-filter comprises a box body, inside which a water inlet treatment cavity and a water outlet cavity are arranged. The water inlet treatment cavity and the water outlet cavity are isolated from each other through an overflow plate. The bottom of the water inlet treatment cavity is provided with a water outlet horizontal pipe assembly, which is provided with a filter board assembly. The upper part of the box body is provided with a trolley assembly, which slides along the upper part of the box body. The bottom of the trolley assembly is provided with a backwashing assembly which matches the filter board assembly. The outer wall of the box body is provided with a water inlet, which is communicated with the water inlet treatment cavity. The outer wall of the box body is equipped with a water outlet, which is communicated with the water outlet cavity. The disc-type micro-filter has high structural compactness and has remarkable using effects.

The multifunctional sea water purification equipment comprises the purification pool and filter material placed in the purification pool, and the described filter material is formed from several pieces of water-cleaning clohtes which are parallelly sepaced and suspended, and the purification pool is divided into several purification filtering chambers by means of water-cleaning clothes. Said water-cleaning cloth has a row of vertical gaps which are cut according to a spaced width, and its two end portions and middle portion are equipped with connecting portion with a certain width, said water-cleaning cloth is a punched non-woven fabric, and its specific surface area is above 2000 sq.m / cu.m. Its purification process includes: fish farming pool, air float pool, multifunctional sea water purificiation equipment, oxygen-dissolving tank and fish farming pool.

The invention discloses a river channel irrigation water purification system, which comprises a source water channel, a high-level water tank, a water screener, a water receiving tank, a debris receiving tank, a pre-sedimentation tank, a storage tank to be purified, an asymmetric fiber filter, an irrigation pool, the first water pump, the second water pump, the third water pump and a siphon device; the high level water tank is located above the source water channel, and the water outlet end of the source water channel is connected to the water inlet end of the high level water tank through the first water pump; The water sieve is located under the high-level water tank, and the water outlet end at the bottom of the high-level water tank is connected to the water inlet end of the upper part of the water sieve; the water receiving pool is located directly below the water leakage part of the water sieve; Before the fiber filter is filtered, a water sieve and a pre-sedimentation tank are set up. The water sieve and the pre-sedimentation tank can remove large-volume solid impurities and sediments in the source water in advance, effectively preventing the clogging of the asymmetric fiber filter.

The invention discloses a monomer synthesis deserted domestic ultrafiltration rich-hydrogen water purification rod, which comprises a pipe fitting, wherein a water outlet opening is formed in the axis position of the bottom of the pipe fitting; an end cover is arranged on the top of the pipe fitting; a sealed state is formed between the end cover and the pipe fitting; a water inlet is formed in the axis position of the top of the end cover; two water distributer cover plates are arranged inside the pipe fitting; cylindric PP cotton is arranged between the two water distributer cover plates; particle carbon is arranged in the axis position of the PP cotton; a plurality of vertically stacked function modules are also arranged inside the pipe fitting; through holes are uniformly distributed in the tops of the function modules; the through holes vertically penetrate through the function modules; active carbon fiber, a HALO purifier, an ultrafiltration membrane and tourmaline are respectively arranged in the function modules and are in sequential arrangement from top to bottom; the sealed state is formed between the two adjacent function modules. The device can effectively realize the water purification.

The invention relates to a maintenance-free air filter assembly. The maintenance-free air filter assembly comprises a housing, a pre-filter element, a main filter element, a pressure relief cavity body, a diversion cavity body, a bottom cover, a subsidiary bottom cover, an air passage and a high-pressure pipe, the housing is fixed to a bracket. A main gas opening is formed in the housing. The outer side of the main gas opening is provided with a first filter device. The pre-filter element is provided with a pre-filter cover. The inner side of the pre-filter element is sleeved with the diversion cavity body. The inner ring of the bottom cover is covered by the subsidiary bottom cover. A gas passage is arranged between the bottom cover and the subsidiary bottom cover. The side face, oppositeto the outside of the bottom cover, of the air passage is provided with a jet exhaust. The jet exhaust is connected with the high-pressure pipe. The high-pressure pipe is connected with a rushing port. The maintenance-free air filter assembly has the characteristics of application is convenient, sealing and reliability are achieved, the cost is low, the size is small, the filter precision is high, engine grinding in advance is prevented efficiently, the service life of a filter is prolonged, and the energy consumption in production is lowered.

The invention discloses a vertical type long shaft sea water pump. The vertical type long shaft sea water pump comprises a part capable of being pulled out and a fixed part, the part capable of being pulled out comprises an impeller, an impeller chamber, guide vane bodies, a pump shaft connected with a motor shaft, a sleeve coupling and an inner connecting pipe, and the fixed part comprises a sucking horn mouth, an outer connecting pipe and a discharging elbow. A pump discharging water outlet is communicated with a pump set lubricating water inlet through a main pipeline, the main pipeline is communicated with external water through an external water pipeline to carry out self-lubricating backwashing on the sea water pump, and the pump shaft is connected with the motor shaft through a diaphragm coupling. The vertical type long shaft sea water pump is simple in structure, light in weight, convenient to maintain and overhaul, high in running efficiency, reliable in running and long in service life and can be widely applied to petroleum and petrochemicals, a ocean platform, a power plant, an iron and steel plant, drainage engineering and other fields.

The invention discloses a combined packer filtering device, and relates to purified water treatment equipment, in particular to the combined packer filtering device which comprises a body (1), a raw water inlet (2), a filtered water outlet (3), a gas inlet (4), a gas outlet (5), a pressure gauge interface (6), an inspection manhole (7), a discharge opening (8), a water distributor (9), a blowoff valve (10), a filtration head (11), a filtration plate (12), a cobblestone supporting layer (13), a fiber ball packer (14), a fiber tow packer (15), a supporting bracket and the like. Through the adoption of the fiber tow packer and the fiber ball packer, which realize gas-water combined backflush, the skillful use of the advantages that the density difference of the two packers is relatively great and the porosities of the two packers are different and the full use of the space of filtering equipment, the combined packer filtering device has the characteristics of superhigh filtering speed, large quantity of pollutants received, easy backflush, high cleanness, simple structure and easy implementation and the like.

The invention relates to a filter element, comprising a porous stainless steel core, a biological filtering film arranged at the periphery of the porous stainless steel core, a plurality of inner circle stainless steel brackets and a plurality of outer circle stainless steel brackets that are arranged at the periphery of the porous stainless steel core at intervals; the biological filtering film gets around the outer circle stainless steel brackets and the adjacent inner circle stainless steel brackets in sequence until all the inner circle stainless steel brackets and the outer circle stainless steel brackets are winded. Adopting the filter element of the structure by fixing and folding the biological filtering film with two circles of stainless steel brackets has the advantages of large filtering area, large pollutant carrying capacity, low pressure difference and long service life of the filtering film.

The invention discloses a nanofiltration membrane process system for deep recovery of waste alkaline liquor. The process system comprises a waste liquid tank, a nanofiltration membrane device and a filter liquid tank in sequential connection, wherein a material pump, a safety filter, a high-pressure pump and a circulation pump are sequentially arranged on a pipeline for connecting the waste liquidtank and the nanofiltration membrane device; the filter liquid tank is connected with a clear liquid outlet of the nanofiltration membrane device; a waste liquid discharging pipe is arranged on a concentration liquid outlet of the nanofiltration membrane device; a concentration backflow pipe connected with the waste liquid tank is arranged on the waste liquid discharging pipe; a concentration backflow valve is arranged on the concentration backflow pipe; a circulation pipe is arranged on the waste liquid discharge pipe positioned at the front end of the concentration back flow valve; the circulation pipe communicates with the pipeline arranged between the high-pressure pump and the circulation pump. During the operation, through the flow rate arrangement of the concentration backflow valve and the circulation pipe, the flow rate entering the nanofiltration membrane device per hour is enabled to be higher than that of the existing device, so that the goals of increasing the membrane layer flushing quantity, lowering the remaining probability of impurities such as separated out hemicellulose, resin and divalent ion complexes, and prolonging the service life of the nanofiltration membrane device are achieved.

The invention discloses a renewable large flow filter core. The renewable large flow filter core comprises a filter core and is characterized in that one end of the filter core is provided with an upper end cover, the other end of the filter core is provided with a bottom cover, the filter core comprises an inner skeleton, an outer skeleton and a filter material between the inner skeleton and the outer skeleton, the filter material is folded to form a corrugated or zigzag structure, and the circumferential surface of the outer skeleton is covered with a plurality of rows of filter holes, and in each row of the filter holes, each two adjacent filter holes are staggered. Through improvement of the raw filter core in the structure and performance and use of a novel corrugated structure, a filtering area is greatly improved to 20 times that of the ordinary filter core. Through change of fluid inlet and outlet directions from an outward direction to an inward direction, a filter core loading capacity is improved, formation of filter cake is promoted and filter core filtering efficiency is 99.5% or more. Through use of the inner and outer skeletons, the filter core can bear pressure from both directions and backwashing regeneration of a large flow filter core is realized.

The invention discloses an air dust filter device for a control valve of a railway truck. The air dust filter device is assembled in the control valve of the railway truck and comprises a sealing sleeve and an elongated channel type filter structure. The elongated channel type filter structure is enclosed by filter screens, the front end of the elongated channel type filter structure is connected with the sealing sleeve, an air inlet which is communicated with the insides of channels of the elongated channel type filter structure is formed in the sealing sleeve, the sealing sleeve can be hermetically connected with a body of the control valve by sealing elements, and air which flows into the air dust filter device from the air inlet of the sealing sleeve can be filtered by the elongated channel type filter structure and then flows into the control valve. The air dust filter device has the advantages that original filter screen structures are replaced by the channel type filter structure, accordingly, the filter area can be effectively enlarged, and the filter precision can be effectively improved; inner frameworks are omitted in the filter structure, accordingly, the air dust filter device is high in ventilation property and dirt holding quantity, is durable and can be used in severe environments, and the quality of air which flows into the control valve can be guaranteed.

The invention discloses a nanofiber composite membrane with a base material and a preparation method thereof, and relates to the technical field of nanofiber membranes. According to the method, micro-etching liquid is sprayed on a base material micro-filtration membrane to obtain a pretreated base material micro-filtration membrane, then at least one nanofiber layer is compounded on the surface ofthe pretreated base material micro-filtration membrane through electrostatic spinning, finally, the nanofiber composite membrane is obtained through two times of water bath cleaning and drying, and the nanofiber composite membrane is rolled up. According to the nanofiber composite membrane and the preparation method, electrostatic spun nanofibers can be tightly combined with the base material microfiltration membrane by pretreating the base material microfiltration membrane, and the prepared nanofiber composite membrane is good in filtering efficiency and greatly prolonged in service lifetime.

The invention discloses a piping arrangement structure of a horizontal water pump, which comprises a first gate valve (1), a second gate valve (2), a check valve (3), a first soft joint (4), a second soft joint ( 5), outlet diffusion pipe (6), rubber damping pad (7), inlet diffusion pipe (8), filter (9) and horizontal water pump (10), the lower end of the horizontal water pump (10) is provided with a rubber Vibration damping pad (7), one side of the horizontal water pump (10) is connected with an inlet diffuser (8) and an outlet diffuser (6), and one side of the inlet diffuser (8) is sequentially connected with a first soft joint (4), the filter (9) and the first gate valve (1), the second soft joint (5), the check valve (3) and the second gate valve (2 ). The invention adopts the piping arrangement structure of the horizontal water pump, and the structure design is reasonable.

The invention discloses a blue-type baffle diversion filter, which includes a filter cartridge and a filter screen. On the inner wall of the liquid outlet side of the filter cartridge, an upper frame and a lower frame 9 are used to filter the round cup The cylinder is eccentrically installed and fixed. A guide baffle is installed on the outer circle of the upper and lower filter screen frames on the side of the liquid inlet in the filter cylinder. The two sides of the baffle are sealed with the inner walls of both sides of the filter cylinder. Sealed with the inner wall of the arc-shaped lower head of the filter cartridge, a liquid inlet buffer chamber is formed between the baffle plate and the side of the filter cartridge liquid inlet, and a liquid inlet and sewage outlet is provided on the lower head at the bottom of the buffer chamber. There is a liquid outlet and sewage outlet at the center of the bottom of the lower head, a pressure gauge is provided outside the liquid inlet and outlet respectively, and an exhaust valve is installed on the flange cover. The invention has the advantages of long service life of the filter screen, convenient opening of the flange cover plate, and large dirt holding capacity.

A water purifier provided with a convenient-to-replace filter element and capable of realizing an ultraviolet sterilization function and relates to the technical field of water purifiers. The water purifier comprises a shell, a booster pump and a fixing clamp; a water storage barrel is arranged in the shell; a first water pipe is arranged in the water storage barrel; a water outflow pipe is mounted at the front end of the booster pump; the booster pump is located on the left side of the water storage barrel; a connecting water pipe is connected to the upper portion of the water storage barrel;a plastic core shell is connected to the left side of the connecting water pipe; a PP filter element is arranged in the plastic core shell; an activated carbon element is arranged in the PP filter element. According to the water purifier provided with the convenient-to-replace filter element and capable of realizing the ultraviolet sterilization function, through the water storage barrel, the connecting water pipe and the plastic core shell, water subjected to multiple sterilization and disinfection in the plastic core shell can enter the water storage barrel through the connecting water pipe, and the water is stored; a user can conveniently connect the water storage barrel with the plastic core shell through the connecting water pipe.

The invention relates to a filter and aims to provide a novel pipeline filter which is convenient in installation and cleaning and extremely convenient in maintenance. The novel pipeline filter comprises a barrel, an adapter tube, a filter basket and a blind flange, wherein the lower side of the barrel is provided with the adapter tube; the filter basket is arranged in the adapter tube; and the bottom part of the adapter tube is provided with the blind flange. After liquid enters the filter basket through the barrel, solid impurity particles are blocked in the filter basket, but clean fluid passes through the filter basket and is discharged by the outlet of the filter. The novel pipeline filter has the advantages that manufacturing is simple; the structure is advanced; the installation and the cleaning are convenient; the water environment capacity is high; the resistance is low; and pollution discharge is convenient.

The invention relates to a filter material for water treatment, in particular discloses a hemp fibre filter wire and a preparation method thereof. The hemp fibre filter wire is characterized by being prepared by using hemp fibres as raw materials, spinning the hemp fibres into yarns through hemp spinning equipment and then degumming, bleaching, drying and forming. The invention is mainly used forthe purification and the filtering of various liquids; a wire-wound filter core prepared by the hemp fibre filter wire is used for the precise filtering of the liquids in a petroleum industry, a chemical industry, an electron industry, a pharmaceuticals industry, a food industry, a domestic water industry, and the like; and in addition, the invention can bring new vitality for the water treatmentindustry due to excellent performance and complete green environmentally-friendly quality.

The invention discloses a diesel engine filter which comprises a filter body, wherein the filter body is provided with at least one inner cavity gradually expanded from the bottom up; each inner cavity is internally provided with at least one filter cartridge connected with the filter body; a space between the external surface of each filter cylinder and a wall of each inner cavity is an oil inlet cavity; each filter cartridge comprises a hollow shaft with a sealed top; the hollow shafts are mounted on the filter body and sleeved with filter elements; the filter elements consist of gland discs that are vertically and oppositely arranged, and element bodies in sealing connection with the opposite gland discs; the element bodies comprise hydrophobic filter paper layers and non-woven filter layers that are arranged from inside out; inner cavities of the hollow shafts are oil outlet cavities; oil through holes are formed in walls of the hollow shafts; an oil inlet channel and an oil outlet channel that are communicated with the oil inlet cavities and the oil outlet cavities respectively are arranged at the lower part of the filter body; and an oil inlet pipe and an oil outlet pipe that are communicated with the oil inlet channel and the oil outlet channel respectively are further arranged at the bottom of the filter body. The filter has the advantages of high filter precision, high pollutant-holding capability and good filter effect.

The invention discloses a boiler gray water treatment and recycling device. The device comprises a tank shell, three-stage reaction zones, a sedimentation zone and a clear water zone are arranged in the tank shell, a water inlet is arranged in a primary reaction zone, the lower part of the primary reaction zone is provided with a water passing port communicated with a secondary reaction zone, thesecondary reaction zone is communicated with the upper part of a tertiary reaction zone, the lower part of the tertiary reaction zone is communicated with the sedimentation zone, the lower part of thesedimentation zone is provided with a mud collection zone and a mud discharge pipe, the upper part of the mud collection zone is provided with an inclined pipe sedimentation zone, the upper part of the inclined pipe sedimentation zone is provided with an overflow tank communicated with a water discharge tank, the lower part of the clear water zone is provided with a filter bin, the top of the filter bin is connected to an automatic backwashing device, the lower part in the filter bin is provided with a filter zone, the bottom of the filter zone is provided with a water drain port communicatedwith the clear water zone, the clear water zone is connected to a water storage tank through a water outlet pipe, the water discharge tank is communicated with the filter bin through a downcomer, thetail end of the downcomer is provided with a guide cover and the upper part of the guide cover is communicated with the water discharge tank through a gas discharge pipe. The boiler gray water treatment and recycling device has a small footprint and less water usage.