9457results about "Filtration circuits" patented technology

The invention provides a chemical sewage advanced treatment system and method based on multistage membrane separation, and relates to the technical field of chemical sewage treatment.The method comprises the steps that pollution load data under preset membrane flux is collected, and the cascade reflux amount in the current membrane separation process is determined through the pollution load data and a real-time pressure index during membrane separation filtration; according to the separation interference deviation, the steady-state filtering period of the membrane separation filtering grade in the constant flux change is predicted, the steady-state filtering period is synchronously screened, and the full-flow separation limit of the multistage membrane separation unit in different pollution loads is obtained; and generating a separation regulation and control index when the equivalent flux generates peak offset according to the cascade reflux quantity and the full-flow separation limit, and performing starting point triggering on the treatment flow of the multistage membrane separation sewage and dirt. Under the dynamic working condition of operation of the multistage membrane separation system, balance adjustment can be carried out on the advanced treatment process trigger of the chemical sewage, so that the standard-reaching rate of membrane separation chemical sewage advanced treatment is increased.

An apparatus for wastewater filtration having a barrel, a basket and a screw on a shaft rotating therein for pushing solid in a distinct output. A removable cartridge comprises a cover for the barrel, the cartridge comprising a pre-sealed shaft connector which releasably connects to at least the upper shaft portion or the lower shaft portion to form the shaft. The screw comprises a brush on an outer rim thereof, the brush having radially outwardly oriented bristles that scrape an inner surface of the basket. The screw comprises a winged wiper at a bottom thereof for sweeping a bottom surface of the barrel, and the solid-material output is provided at the bottom surface of the barrel and is shaped as a rectangular opening which is offset from a central axis of the screw. Solid removal efficiency and maintenance are thereby improved.

The invention discloses container type sewage treatment equipment and a container type sewage treatment process, relates to the technical field of sewage treatment, and solves the technical problem that hard particle impurities are blocked in filtering holes and are difficult to effectively remove, so that the filtering efficiency is influenced. Comprising a container and a treatment unit on the top of the container, a fence is installed in the container and divides an inner cavity of the container into a precipitation cavity and a filtering cavity, a guide pipe connected with the treatment unit is installed at the position, close to the bottom end, of the fence, an overflow mechanism is installed between the precipitation cavity and the filtering cavity, and a transverse plate is installed between the cavity walls, close to the bottom end, of the filtering cavity; a plurality of filtering pieces are rotationally mounted on the transverse plate, anti-blocking mechanisms for dredging the filtering pieces are arranged in the filtering pieces, and shifting mechanisms for driving the filtering pieces to rotate at equal intervals are mounted at the tops of the filtering pieces. The filtering holes in the filtering piece can be conveniently dredged in sequence, so that hard blockages clamped in the filtering holes can be conveniently and effectively removed, and the filtering efficiency of sewage can be ensured.

The invention provides equipment for extracting lithium from electrolytic aluminum slag and a process for extracting lithium and co-producing cryolite, and relates to the technical field of solid waste treatment, the equipment comprises a bottom plate, a heating tank, an extracting tank, a filtering tank, a top cover, a driving mechanism, a switching mechanism and a mixing mechanism; the heating tank is installed on the upper surface of the bottom plate, the extraction tank is installed inside the heating tank, the filtering tank is installed inside the extraction tank, the top cover is installed on the upper surface of the filtering tank in a sealed mode, and a liquid inlet pipe and a feeding pipe are installed inside the top cover. According to the scheme, the conical mixing barrel and the linkage overturning type material mixing plate are adopted, the material mixing plate can overturn caustic soda flakes into the electrolytic aluminum slag, then the caustic soda flakes and the electrolytic aluminum slag are mixed through the material mixing rod, it can be guaranteed that the caustic soda flakes can be evenly mixed with the electrolytic aluminum slag through the design, and it is guaranteed that the caustic soda flakes can be well attached to the surface of the electrolytic aluminum slag; and rapid overheating can be avoided when the subsequent caustic soda flakes are contacted with water, so that the filter tank works more stably and safely.

The utility model discloses a crystal film fluidized bed treatment system aiming at high-hardness water treatment, the system mainly comprises a crystallization fluidized bed and a multi-layer flat film microfiltration device, and the crystallization fluidized bed device is of an inner-layer and outer-layer cylinder structure and is provided with a slag discharge pipe, a water inlet pipe, an annular dosing pipe, an inclined pipe enhanced separation device and a water outlet pipe; the multi-layer flat membrane microfiltration equipment is provided with a water inlet pipe, a water outlet pipe, a buffer water tank, a cleaning mechanism, a metal membrane, a sludge tank and the like; when the system runs, high-hardness raw water firstly enters the crystallization fluidized bed for softening treatment, and then enters the multi-layer flat membrane microfiltration equipment for further removing hardness and turbidity after treatment; the adopted system combining the crystallization fluidized bed and the flat membrane microfiltration equipment can effectively remove the hardness and turbidity of water, flocculation and coagulation agents do not need to be added, the adverse effect of the coagulation agents on a subsequent membrane system is effectively avoided while the operation cost of the system is reduced, the hardness and turbidity of the water can be effectively removed, and the service life of the system is prolonged. Various ions in the water are synchronously removed.

The invention discloses tea juice treatment equipment, and relates to the technical field of tea juice treatment. The device comprises a separation net provided with a through hole, a cutter head and a dial wheel plate crushing assembly which are coaxially arranged up and down, an adjustable magnetic coupling driving part composed of an electromagnet and a planetary gear, a bidirectional flow centrifugal separation chamber, a filter element fine filtration cavity and a non-stop screw deslagging mechanism. Flushing wastewater is actively pre-crushed and then tangentially guided to a centrifugal cavity, and solid and liquid are rapidly separated under the synergistic effect of centrifugal force and suction pressure difference; a liquid phase is subjected to center suction, refined filtration, clarification and discharge, and a solid phase settles along the inner wall and is automatically conveyed to the outside for sealed collection. According to the system, the rotating speed is adjusted in a closed-loop mode through online particle monitoring, load self-adaption and low-energy-consumption operation are achieved, filter screen blockage, shutdown cleaning and peculiar smell diffusion are avoided, and the system is suitable for on-site up-to-standard treatment of tea residue sewage in the peak period of a catering store.

The invention relates to the technical field of planting, in particular to drip irrigation equipment for agricultural water-saving irrigation, and aims to overcome the defects that according to drip irrigation equipment in the prior art, a drip irrigation pipe is damaged and the planting efficiency is affected due to the fact that the drip irrigation pipe is inconvenient to automatically release and wind and is inconvenient to wash. According to the scheme, the device comprises a fixing frame; the number of the moving wheels is four, and the four moving wheels are all installed at the bottom of the fixing frame; the intelligent electromagnetic valve control cabinet and the intelligent water and fertilizer all-in-one machine are fixedly mounted at the top of the fixing frame; the storage barrel is fixedly installed at the top of the fixing frame, a stirring shaft is rotatably installed at the top of the storage barrel, and a plurality of blades are fixedly installed on the stirring shaft. According to the drip irrigation device, a drip irrigation pipe can be conveniently and automatically released and wound, the drip irrigation pipe can be conveniently washed, the situation that the drip irrigation pipe is damaged is avoided, and the planting efficiency is improved.

The invention relates to the technical field of chemical separation, in particular to a cyclohexanone rectification and purification method based on high-tower segmented packing, which comprises the following steps: step 1, filtering a cyclohexanone raw material containing impurities to remove solid particles, and dynamically adjusting the filtering precision according to the viscosity of the raw material; 2, arranging a bottom section, a middle section and a top section in the vertical high tower; the temperature gradient of each section is regulated and controlled through an independent temperature control unit, so that the temperature gradient of the middle section is matched with the relative volatility of the cyclohexanone-light component; 3, dynamically adjusting the reflux ratio based on the real-time detection result of the purity of the tower top distillate, and controlling an intermittent discharge valve according to the density change of the tower bottom heavy component enrichment liquid so as to continuously remove the heavy components; and 4, recycling the waste heat of the steam at the top of the tower for preheating the raw materials, and inhibiting the tower pressure fluctuation through a buffer tank. Through the innovative design of sectional packing of the high tower, the separation efficiency is improved, the energy consumption is reduced, and meanwhile, the equipment reliability is improved.

The invention relates to a method for preparing a Chinese wolfberry exosome, the Chinese wolfberry exosome prepared by the method and application of the Chinese wolfberry exosome. Specifically, the preparation method of the lycium barbarum plant exosome disclosed by the invention comprises a layer-by-layer filtration step, and the layer-by-layer filtration step sequentially comprises deep filtration and optional membrane filtration.

The invention discloses a novel electrolytic tank pipeline filter and a self-cleaning system. The novel electrolytic tank pipeline filter comprises a multi-stage filtering part, the self-cleaning system and an intelligent control system, the multi-stage filtering part comprises multi-stage filter elements arranged in the material pipeline, and the multi-stage filter elements are arranged from large to small according to the filtering particle size to form a filtering gradient; the self-cleaning system acts on the multi-stage filter element part at the same time or in a time-sharing manner on the basis of a fluid reverse recoil principle; the self-cleaning system is combined with pulsating flushing control, so that the filter element is separated from a filter cake at low loss; the multi-stage gradient filtration is adopted, impurities are efficiently and accurately intercepted, the filter elements with the particle sizes from large to small are arranged in a gradient mode, the first-stage titanium alloy filter element intercepts large particles, the second-stage polytetrafluoroethylene membrane filters tiny impurities, the efficiency is improved through graded interception, the loss of the filter elements is reduced, and the material purity and the hydrogen production quality are guaranteed. The multi-element self-cleaning technology is adopted, low-loss deep cleaning is achieved, and the self-cleaning system integrates multiple technologies such as fluid reverse backflushing, pulsating flushing, ultrasonic vibration and a pulsed electric field.

The invention relates to the technical field of abalone peptide production, and discloses extraction equipment for extracting natural taurine from sea cucumbers, which solves the problems of function splitting, pollution transfer and low efficiency in the traditional process by integrating three functional modules of countercurrent stirring, in-situ filtration and rotary elution. A reverse stirring part forms shear convection through stirring blades rotating in two directions and a stirring plate, and sea cucumber tissue breaking is accelerated; a dynamic adjusting and filtering mechanism is adopted in the filtering part, filtering modes are switched after stirring, and in-situ separation of the extracting solution and the raw materials is achieved; the elution part drives the cationic resin to be in forced contact with an extracting solution through rotation, and the adsorption efficiency is improved by combining through-channel type resin distribution. The three components cooperatively operate in a single tank, and traditional crushing, extracting, separating and eluting multi-step processes are integrated into a continuous flow. The method has the advantages that the extraction efficiency is improved, the taurine purity is improved, and meanwhile, the material transfer loss and the pollution risk are reduced.

The invention belongs to the technical field of oil exploitation, and particularly relates to an oil exploitation device with a gravel filtering function. The oil exploitation device comprises a collecting frame, the inner bottom wall of the collecting frame is fixedly connected with a filtering cylinder through a supporting rod, the upper end of the filtering cylinder is fixedly communicated with two oil conveying pipes, and the two oil conveying pipes are both in butt joint with an oil pipeline; and the centrifugal separation mechanism is used for achieving separation of petroleum and gravel through the effect of centrifugal force, the centrifugal separation mechanism comprises filtering holes formed in the peripheral side wall of the filtering cylinder, and a rotational flow block is rotationally installed in the filtering cylinder. Through the arrangement of the centrifugal separation mechanism and the design that the upper portion of a rotational flow block is inclined and contracts inwards, mixed fluid is guided to form spirally-descending rotational flow, and petroleum is rapidly separated through filtering holes through centrifugal force; and by arranging the gravel conveying mechanism, a separation-conveying continuous operation chain is formed, and the blocking risk caused by gravel accumulation is thoroughly eliminated.

The invention discloses a filtering device for reinfusion after external drainage of bile in the hepatobiliary surgery department, and belongs to the technical field of medical instruments. The filtering device comprises a drainage mechanism, a stepped filtering mechanism and a reinfusion mechanism. The stepped filtering mechanism is used for filtering bile; the stepped filtering mechanism is detachably connected with the drainage mechanism and the feedback mechanism. The stepped filtering mechanism comprises a filtering carrier, a filtering cavity and a pumping mechanism used for pumping bile to the filtering cavity are arranged in the filtering carrier, a primary screen, a hollow fiber membrane and a hydrophilic gel filtering membrane are sequentially arranged in the filtering cavity from top to bottom, and a cleaning mechanism used for cleaning the primary screen is arranged on one side of the primary screen. An ultrasonic vibration module for cleaning attachments on the hollow fiber membrane is arranged on one side of the hollow fiber membrane. By means of the intelligent design and the multi-stage filtering mechanism, the bile feedback efficiency and safety are remarkably improved, and the infection risk is reduced.

The invention relates to the technical field of filtering and separating equipment, and particularly discloses precipitation method white carbon black diluted slurry filtering and separating equipment which comprises a collecting base, the top of the collecting base is fixedly connected with a separating pipe, the top of the separating pipe is fixedly connected with an extruding device, and the side face of the separating pipe is fixedly connected with a guide-in pipe. The bottom of the separation pipe is sleeved with and slidably connected with a separation pool, the extrusion device extends into the separation pipe and is slidably connected with the separation pipe, the extrusion device comprises a motor, a filtering hole is formed in the top of the extrusion bottom plate, and an arc-shaped sliding groove is formed in the side face of the extrusion bottom plate; the bottom of the extrusion bottom plate is fixedly connected with a straight extrusion plate, the bottom of the straight extrusion plate is communicated with an arc-shaped extrusion plate, the side face of the motor is fixedly connected with the top of a separation pipe through a support, and the precipitation method white carbon black diluted slurry filtering and separating equipment achieves the purpose of facilitating filtering and separating.

The invention discloses advanced treatment equipment and process for wastewater in drug intermediate production, and relates to the technical field of wastewater treatment in drug production. The device comprises a waste liquid pool, a treatment tank, a separation box, a circulating pipe, an outer conveying pipe and a liquid return pipe, the interior of the treatment tank is divided into an upper cavity and a lower cavity, and a filter cartridge and lower-row paddles are arranged in the separation box. According to the invention, wastewater and chemicals are conveyed to the treatment tank, the circulating system and the lower row of paddles are started to realize full mixing reaction, then the separation box is used for filtering and shunting, clean liquid flow is conveyed out, and the filter cartridge can be reversely washed through the liquid return pipe. The drug intermediate production wastewater treatment device can treat drug intermediate production wastewater, can improve the mixing uniformity and the solid-liquid separation precision of a drug and the wastewater, can clean the filter cartridge without shutdown and disassembly, and meets the industrial continuous production requirements.

The utility model discloses a residue collecting and filtering device and a dish-washing machine, the residue collecting and filtering device comprises a water collecting cavity, a residue collecting cavity and a residue collecting cavity, the water collecting cavity is used for collecting washing water; the filter cavity is provided with a first inlet and a first outlet, the first inlet is communicated with the water collecting cavity, the filter cavity is used for separating residues and water in the washing water, and the filter cavity is provided with a first filter screen; the residue collecting cavity is provided with a second inlet, a second outlet and a residue discharging opening, the second inlet is communicated with the filtering cavity, the filtering cavity is used for collecting residues separated by the filtering cavity, and the residue collecting cavity is provided with a second filter screen; the circulating pump is communicated with the first outlet and the second outlet; and the draining pump is communicated with the slag discharging opening. According to the slag collecting and filtering device disclosed by the embodiment of the utility model, the washing water can be filtered through the filtering cavity, and the slag collecting cavity is used for collecting the slag, so that the filtering effect of the slag collecting and filtering device is improved, and the slag is convenient to discharge.

The present invention discloses a mechanical engineering reducer with an oil cooling assembly and a control method thereof, comprising a cooling box and a reducer fixedly mounted on the top of the cooling box, a motor fixedly mounted on the top of the cooling box near one side of the reducer, a coupling fixedly connected between the motor and the reducer, an oil pump fixedly mounted on the top of the reducer, a liquid inlet of the oil pump fixedly connected to a liquid inlet pipe extending into the interior of the reducer, a liquid outlet fixedly connected to a liquid outlet pipe, a purifier connected to the liquid outlet pipe, an S-shaped heat exchange tube fixedly connected to one end of the liquid outlet pipe, an air cooling fin assembly for cooling the S-shaped heat exchange tube provided inside the cooling box, and fan assemblies provided on both sides of the air cooling fin assembly. The present invention relates to the field of reducer cooling technology, and the mechanical engineering reducer with an oil cooling assembly and a control method thereof solve the problem that the existing heat dissipation device of the reducer has certain limitations and an unsatisfactory heat dissipation effect.

The invention discloses sewage treatment and purification equipment, which relates to the technical field of sewage treatment and comprises a treatment tank and a purification mechanism, the purification mechanism comprises a mixing structure, a filtering structure, a purification structure, a blow-off pipe and a plugging structure; the filtering seat and the cleaning structure are matched to filter impurities in the sewage, and the purifying structure can purify and filter the sewage added with a purifying agent; a filtering structure, a fan-shaped moving plate, a connecting ring, a limiting ring, a limiting rod, a first rack, a transmission gear and a second rack are matched to align a blocking plate with the filtering structure and block a filtering seat, so that a top tank and a bottom tank are divided into two areas, impurity precipitates can be discharged from the top tank, the filtering structure is prevented from being blocked by impurities, and the service life of the filtering structure is prolonged. The flocculation treatment and purification efficiency of the purification structure is improved, a worker does not need to close the treatment tank for disassembly and maintenance, the labor intensity of the worker is reduced, and the use effect of the sewage treatment and purification equipment is improved.

The utility model relates to a system for reducing the acid value of hydrolysate in the separation and washing process of dimethyl dichlorosilane hydrolysate. Comprising three stages of coalescers, dimethyl dichlorosilane acidic hydrolysate enters the system from the first stage of coalescer, process water enters the system from the third stage of coalescer, the acidic hydrolysate and diluted hydrochloric acid or process water are mixed in each stage of coalescer, oil-water two-phase separation is completed through multiple times of washing and coalescence, and meanwhile the acid value of the hydrolysate is reduced; each stage of coalescer comprises two static mixers connected in series, a group of prefilters and a large coalescer, the coalescer is Z-shaped, and four stages of filter elements are arranged in each stage of coalescer. Through repeated tests, a modified polyvinylidene fluoride filter element of Pall Company is finally selected, and after continuous three-stage coalescer treatment, the acid value of dimethyldichlorosilane hydrolysate can be reduced to 10 PPM or below.

The invention relates to the technical field of turpentine processing, in particular to a turpentine continuous melting and clarifying processing device and method.The turpentine raw material is put into a feeding cylinder, piled in an inclined scattering cylinder, subjected to axial autorotation along with the feeding cylinder, discharged downwards and distributed in all areas in a dissolving tank, and after dissolving is completed, the turpentine raw material is poured into the feeding cylinder to be subjected to continuous melting and clarifying processing. When the telescopic part drives the sieve plate to move upwards until the bottom end of the movable cylinder abuts against the sieve plate, the sieve plate axially rotates along with the feeding cylinder and drives the movable cylinder to axially rotate, so that the material leakage port and the material scattering port are staggered, the movable cylinder rolls solid matters in the circumferential direction of the sieve plate, and the resin liquid is discharged into the clarifying tank along the liquid leakage pipe while slag is discharged from the slag outlet; after grease water in the clarification tank is layered, most of the water layer is discharged, the grease water is put into the feeding cylinder for circular treatment, and the steam injection system and the emptying pipe in the clarification tank are opened for distillation treatment, so that the continuous processing efficiency is further improved.

The invention relates to the technical field of gel separation and extraction, in particular to a precipitation and separation device for elastin gel preparation, which comprises a precipitation cylinder, a liquid outlet is arranged above the circumferential side wall of the precipitation cylinder, and a cleaning ring for cleaning attached gel is arranged in the precipitation cylinder. A cleaning ring is arranged in the precipitation cylinder, a filtering mechanism for intercepting gel is arranged at the center of the cleaning ring, the filtering mechanism is rotatably connected with the cleaning ring, and a driving mechanism for driving the cleaning ring to slide up and down is arranged at the top end of the cleaning ring. The cleaning ring is arranged on the bottom of the precipitation cylinder, elastin gel attached to the inner wall of the precipitation cylinder is effectively scraped, meanwhile, the filtering mechanism moves downwards along with the cleaning ring, the water-phase solution is allowed to penetrate through the filtering mechanism to intercept gel particles, floating and floating of the gel particles in the water-phase solution are avoided, it is ensured that the gel particles can be smoothly precipitated to the bottom of a container, and the recovery efficiency of the gel is improved.

The invention relates to the technical field of wastewater treatment, in particular to water treatment plant reverse osmosis wastewater treatment equipment and method.The water treatment plant reverse osmosis wastewater treatment equipment comprises a precipitation barrel used for wastewater precipitation, a drainage opening is formed in the annular barrel wall of the precipitation barrel, and a sewage outlet used for discharging precipitates is formed in the bottom wall of the precipitation barrel; the filter pressing unit is arranged in the precipitation barrel, is used for separating the wastewater from the precipitation, and comprises a filter pressing part which can move up and down and is arranged in the precipitation barrel. The filter pressing unit adopted by the invention can filter precipitates generated after wastewater treatment, the precipitates do not need to stand, the wastewater treatment efficiency is effectively improved, the treated wastewater can be discharged in real time in the filtering process, and the step of discharging the wastewater through a water pump is reduced.

The invention relates to the technical field of rare earth waste treatment, in particular to a solid-liquid separator for rare earth waste treatment, which comprises a discharging frame and a barrel fixedly connected to the top of the discharging frame in a penetrating manner, the rear side of the barrel is communicated with a feeding frame, the bottom of the feeding frame is a symmetrical inclined surface, and the bottom of the barrel is rotatably connected with a porous annular plate along the circumferential direction; and the porous annular plate rotationally penetrates through the bottom of the discharging frame. According to the rare earth waste solid-liquid separation device, reacted rare earth waste is poured into the barrel through the feeding frame and blocked by the material blocking plate, then the double-shaft motor is started to rotate, the porous annular plate drives the rare earth waste to rotate through the material blocking plate, liquid in the rare earth waste is thrown out through centrifugal force, and solid-liquid separation is completed; and the pressing block moves downwards to extrude the rare earth waste, so that water liquid in the rare earth waste is extruded out to prevent liquid left in the rare earth waste from influencing subsequent use, and the solid-liquid separation effect is improved.

The utility model discloses a leachate discharge disposal system which comprises a leachate conveying system and a liquid storage pool communicated with the output end of the leachate conveying system, and the leachate conveying system comprises a conveying device, an impurity smashing device and a filtering device; the water outlet end of the conveying system is communicated with the liquid storage tank, and a deslagging mechanism and a dredging mechanism are arranged in the liquid storage tank. The conveying device is arranged to dredge the cylinder body in time, the impurity smashing device is used for cutting and refining waste residues, and the filtering device is arranged to prevent large impurities from forming clamping stagnation; the slag discharging mechanism is arranged to periodically and orderly discharge sediments, the slag discharging efficiency is improved, the dredging device is arranged to discharge floating objects, meanwhile, blockage caused by accumulation of the floating objects can be dynamically prevented, and use is convenient and fast.

The invention discloses a sewage treatment device capable of automatically cleaning a filter, the sewage treatment device comprises a pretreatment settling tank, the pretreatment settling tank is used for preliminarily separating large particle impurities in sewage, the inner wall of the pretreatment settling tank is fixedly connected with a mounting plate, the mounting plate is arranged in a hollow shape, and the filter is arranged in the mounting plate. A filter cartridge is mounted on the inner wall of the pretreatment settling tank, a spiral sleeve is arranged in the filter cartridge, and the device further comprises a driving assembly, a discharging assembly and a scraping assembly. The motor drives the driving shaft to rotate, the sector gear is meshed with the driven gear, so that the spiral sleeve is driven to move up and down to clean the inner wall of the filter cartridge, when the sleeve rod moves, the rack is meshed with the transmission gear, the push block pushes the convex block to enable the second scraper to slide out and be matched with the first scraper to scrape impurities in the spiral sleeve, and efficient filtering is ensured.

The invention relates to the technical field of wastewater treatment, and discloses a multi-stage wastewater treatment device for wood production, which comprises a treatment tank, and further comprises a filter cartridge I and a filter cartridge II which are cylindrically arranged in the treatment tank, and the filter cartridge II is positioned in the filter cartridge I and is used for sequentially separating impurities in wastewater; the water outlet pipe is arranged at the bottom of the filter drum II and is used for guiding out the treated wastewater; the water inlet pipe is arranged at the bottom of the treatment tank. By adopting the filter cartridge I and the filter cartridge II, continuous multi-stage filtration from rough filtration to fine filtration is realized, saw dust, fibers and other impurities with different particle sizes are removed at one time, meanwhile, online self-cleaning is synchronously carried out, and rotary filtration and filter screen cleaning are synchronously carried out through motor driving; therefore, the problem that traditional filtering equipment must be frequently shut down and manually cleaned due to quick blockage of a filter screen is solved, continuous and uninterrupted efficient operation of the wastewater treatment process is ensured, and the overall treatment efficiency and production continuity are greatly improved.

The invention relates to the technical field of sewage precipitation separation, and discloses a sewage coagulation precipitation separation device for building construction, the sewage coagulation precipitation separation device comprises a cylinder, the bottom of the inner wall of the cylinder is in through connection with a hexagonal pipe, the top of the hexagonal pipe is fixedly connected with a fixing frame, and after sewage in the cylinder is layered, a power supply of an electric telescopic rod is switched on; an extended electric telescopic rod drives a piston plate to slide downwards, the downward pushing force of the piston plate forces a sliding disc to slide downwards along the outer wall of a hexagonal pipe through sewage, and the sliding disc moving downwards finally crosses the highest end of a first discharging opening, so that the inner wall of the first discharging opening and the top of the sliding disc are staggered, and a gap is formed; at the moment, sewage in the closed space is influenced by high pressure, and sediments are forced to enter the hexagonal pipe through the gaps, so that the phenomenon that the sediments are mixed with supernate can be effectively reduced when the equipment discharges the sediments at the bottom.

The invention discloses a preparation method of a high-purity ultra-clean hydroxylamine aqueous solution. A four-stage purification process comprises the following steps: 1) low-temperature chelation-ceramic membrane metal removal; 2) molecular sieve membrane rectification decomposition prevention; 3) pulse electrodialysis reversal deep desalination; and 4) gradient filtration terminal refining. According to the preparation method of the high-purity ultra-clean hydroxylamine aqueous solution, a low-temperature molecular sieve membrane rectification technology is adopted, hydroxylamine liquid-phase thermal decomposition is avoided through a vapor phase separation mechanism, and the decomposition rate is reduced to 1t from 15% of a traditional process; the method comprises the following steps of: removing metal through chelation-electrodialysis synergistically, ensuring that Fe and Cu ion residues are less than or equal to 0.05 ppb through a thiosemicarbazide-bipolar membrane system, ensuring the nitrogen environment in the whole process, ensuring that the dissolved oxygen is less than or equal to 5ppb, replacing liquid phase distillation with molecular sieve membrane vapor phase separation, solving hydroxylamine liquid phase thermal decomposition, and breaking through the trace metal removal limit by combining thiosemicarbazide-bipolar membrane synergistically removing impurities. And then through nanoscale terminal filtration, the metal / particle control reaches ppb-level limit which is superior to the SEMI standard, and double spanning of quality and cost is realized.

The invention discloses a multi-stage deburring device which comprises a high-pressure water deburring mechanism, a water sand deburring mechanism and a water sand recycling mechanism. The high-pressure water deburring mechanism is used for conducting rough deburring on a workpiece, and the water sand deburring mechanism is used for conducting fine deburring on the workpiece. The water-sand recovery mechanism is communicated with the high-pressure water deburring mechanism and the water-sand deburring mechanism, receives burrs and a water-sand mixture, separates the burrs, water and sand grains, and re-supplies the water and the sand grains to the high-pressure water deburring mechanism and the water-sand deburring mechanism for use; according to the deburring device, rough deburring is conducted through the high-pressure water deburring mechanism, fine deburring is conducted through the water sand deburring mechanism, the multi-angle control mechanism is combined, burrs on the surface of a workpiece can be removed in an omnibearing and dead-corner-free mode, and the deburring efficiency and quality are effectively improved. And secondly, the equipment adopts the conveying belt to realize automatic production, so that manual intervention is reduced, and the production efficiency is improved.

The utility model discloses a residue collecting and filtering device and a dish-washing machine, the residue collecting and filtering device comprises a filtering cavity, the filtering cavity is provided with a first inlet and a first outlet, the first inlet is used for introducing washing water, and the filtering cavity is used for separating residues and water in the washing water; the residue collecting cavity is provided with a second inlet and a second outlet, the second inlet is communicated with the filtering cavity, and the residue collecting cavity is used for collecting residues separated by the filtering cavity; the slag collecting and filtering device further comprises a circulating pump, a first flow channel is arranged between an inlet of the circulating pump and the first outlet, a second flow channel is arranged between the inlet of the circulating pump and the second outlet, and the flow resistance from the filtering cavity to the circulating pump is smaller than that from the slag collecting cavity to the circulating pump. According to the slag collecting and filtering device disclosed by the embodiment of the utility model, the washing water can be filtered through the filtering cavity, and the slag collecting cavity is used for collecting the slag, so that the filtering effect of the slag collecting and filtering device is improved, and the slag is convenient to discharge.