35results about How to "Solve easy blockage" patented technology

The invention relates to the technical field of environment monitoring, in particular to a multi-point automatic water sampling device for an unmanned aerial vehicle, which comprises a water sampling mechanism arranged at the bottom of the unmanned aerial vehicle, the water sampling mechanism can be automatically connected with a flying platform of the unmanned aerial vehicle, the water sampling mechanism comprises a shell, a water tank and a water pumping component, the water tank is arranged at the bottom outside the shell, and a plurality of water sampling bins are arranged in the water tank in a surrounding manner; the shell is provided with a liquid inlet hole communicated with the water sampling bin; the water pumping component comprises a water pump, a turntable and a switching pipe, and a water inlet pipe is arranged at the suction end of the water pump and provided with a water sampling pipe; a drain pipe is arranged at the discharge end of the water pump; the turntable is driven by a switching motor and is provided with a through drainage hole, one end of the switching pipe is communicated with one end, far away from the water pump, of the drainage pipe through a sealing universal joint, and the other end of the switching pipe is communicated with the drainage hole. According to the invention, single-pass flight is realized, multi-point sample collection, storage, diversion and export can be completed, the water collection efficiency is improved, and the real-time performance of seawater monitoring is ensured.

The utility model provides a kind of new trend device with air purification function, including air inlet pipe and air outlet pipe, the air inlet pipe and air outlet pipe one end are connected by air guide pipe, air inlet pipe air inlet one end is fixedly connected with primary filter plate, air inlet pipe and air outlet pipe inside are respectively rotatably connected with multiple wind baffle, air guide baffle is rotatably connected in the air guide pipe inside, two sealing bosses are fixedly connected in the air guide pipe inside, air guide baffle both sides are attached to sealing boss, synchronous wheel group is fixedly connected above one side wind baffle and air guide baffle installed in the air inlet pipe or air outlet pipe;Air flow switching is realized by the linkage design of air guide baffle and wind baffle, when needing to clean primary filter plate, overturn motor drives air guide baffle rotation degree, simultaneously by synchronous wheel group and synchronous belt one drive wind baffle synchronous rotation, make air flow reverse through primary filter plate and realize automatic backflush cleaning, solve the problem that traditional filter screen is easy to block.

This utility model relates to the field of fire ventilation technology, and solves the problem that with the increase of usage time, some dust remains on the surface of the protective cover, blocking the ventilation holes and affecting ventilation efficiency. Furthermore, some dust remains on the inner wall, causing inconvenience for later cleaning and further affecting the ventilation quality of the duct. Specifically, it is a fire ventilation device, including a duct. A fan is installed inside one end of the duct, and a dustproof net is installed at the other end. A threaded cylinder is fixedly connected to the back of the fan. A threaded rod is threadedly connected inside the threaded cylinder. One end of the threaded rod is provided with a connector and a cross plate. The cross plate has symmetrically formed grooves at its four corners and a connecting strip embedded inside. A flexible scraper is installed inside the connecting strip and contacts the dustproof net. An electric telescopic rod is provided on the side of the duct, and an arc-shaped groove is formed at its telescopic end. A clamping plate assembly is provided in the middle of the side of the duct, and a fixed plate is movably connected inside it.

This invention relates to the field of rainwater harvesting technology for sponge campuses, and discloses a rainwater harvesting device and its usage method for sponge campuses. The device includes a buried pipe, a connecting pipe, and a collection box connected in sequence. The top of the buried pipe has an arc-shaped, elastic, permeable shell that extends above the ground. Inside the shell is a pneumatic self-cleaning structure composed of a sliding groove, piston shaft, sliding plate, spring, and air holes. The bottom of the inner shell has a pressurized flushing component. The connecting pipe has a worm gear driven crushing component. The collection box is divided into an interception chamber and a sedimentation chamber by an inclined filter screen. This invention removes surface debris by pressing down the permeable shell, combined with pneumatic pipe unblocking, in-situ impurity crushing, and rainwater sedimentation and grading treatment, ensuring rainwater harvesting efficiency, reducing operation and maintenance difficulty and costs, realizing rainwater resource utilization, and meeting the needs of sponge campus construction. It solves the problems of existing flat-grid rainwater inlets in campuses being easily blocked by fallen leaves and other debris, large impurities causing pipe siltation, and high daily maintenance costs.

The utility model relates to gas delivery technical field, and disclose a kind of leakage-proof gas delivery device, including filter screen, setting in filter cavity;Top plate, fixedly connected to filter screen top;Cavity, symmetrically set in fixed ring opposite face;Spring, one end fixedly connected to cavity inboard;Limiting block, fixedly connected to spring other end;Limiting hole, symmetrically opened in top plate outer side wall;Fixing mechanism, set on filter cavity and limiting block. First, movable plate is pulled to the side away from fixed ring, pull rod drives limiting block to retract inside cavity, spring is extruded, limiting block is fixed using fixing mechanism, then top plate and filter screen are inserted into recess in the middle of filter cavity, then reverse rotation handle, so that fixed block is separated from fixed hole, at this time, spring drives limiting block to extend into limiting hole, realize the fixation of top plate, to complete the installation of filter screen, filter screen will be filtered by the gas of filter cavity, avoid impurity to block pipeline.

The invention discloses a granulator for waste plastic recycling, and relates to the technical field of plastic recycling, the granulator for waste plastic recycling comprises a workbench, a granulator body and a fixing frame, a conveying box is arranged in the middle of the fixing frame, a polishing barrel is arranged on the lower side of the conveying box, and a recycling box is arranged on the right side of the polishing barrel; plastic particles are subjected to vibration screening by arranging the screening mechanism, the filter plate is made to do parabola reciprocating motion under cooperation of a vertical groove and an arc-shaped groove, the dispersion and screening effect among the particles is promoted, two sliding rods with different lengths driven by a cam form sequential beating, the short sliding rods conduct basic vibration on the filter plate, and the screening effect is improved. When the filter plate starts to reset and is located at the highest point of the track, the long sliding rod conducts secondary strong beating on the lower right end of the filter plate on time, so that particles clamped in meshes are shaken off, shaking cleaning is conducted on the screen face, and the problem that a traditional vibrating screen is prone to being blocked is fundamentally solved.

This invention relates to the field of food and beverage processing machinery, specifically a degassing device for fruit juice production. It comprises a vacuum degassing tank, a variable frequency drive motor, a central feed pipe, a rotating umbrella-shaped film-forming disc, a streamlined impact turbulence ring, and an adaptive control module. The device utilizes the central feed pipe in conjunction with the rotating umbrella-shaped disc to spread the fruit juice into a liquid film through centrifugal force. The adaptive module calculates the dynamic shear resistance of the fruit juice based on the effective working current, thereby adjusting the motor speed in real time. Its core principle is to generate fluid shearing and reversal effects by impacting the streamlined turbulence ring with the high-speed liquid film, effectively tearing apart the fruit fiber network that encapsulates the air bubbles, allowing the microbubbles to escape rapidly in a vacuum environment. This invention avoids complex flow channel structures, solving the problems of easy clogging and material residue, reducing cleaning frequency, and significantly improving degassing efficiency.

The application belongs to the technical field of super-micro particle preparation, and specifically discloses a preparation system for super-micro particles of difficult-to-dissolve powder, which comprises a connecting frame and a disturbance system, one side of the upper end of the connecting frame is connected with a preparation cylinder, one side of the upper end of the preparation cylinder is connected with a feeding pipe, the upper end of the preparation cylinder is connected with a connecting cylinder, the upper end of the connecting cylinder is connected with a gas inlet pipe in the middle, the lower end of the gas inlet pipe is connected with a rotary joint, and the lower end of the rotary joint is connected with a rotating pipe. Through the synergistic effect of the air injection mechanism, the disturbance mechanism and the material scattering mechanism, the problems of super-micro particle feeding blockage, compaction and accumulation and water blockage are effectively solved, and the preparation efficiency of the suspension agent and the product quality are improved.

The utility model relates to the technical field of dust removal equipment, in particular to dust removal environmental protection equipment which comprises a bottom plate, an operation box is fixedly connected to the top of the bottom plate, a connecting opening is formed in the side face of the operation box, a dust suction machine is arranged on the inner wall of the connecting opening, and a filter plate is arranged in the operation box. The top of the operation box is fixedly connected with a connecting pipe, the top of the connecting pipe is provided with a dust removal device, and the inner wall of the operation box is fixedly connected with a cleaning assembly. According to the utility model, the cleaning assembly is arranged, and the first motor drives the bidirectional screw rod to rotate, so that the scraping strip of the scraping plate cleans dust on the surface of the filter plate, and the filter plate does not need to be manually disassembled; the second motor of the dust removal device drives the rotary table to rotate, water mist sprayed by the water spraying device makes full contact with air, fine dust in the air is adsorbed and settled, and the problem that the dust removal efficiency is low when a single dust removal mode is adopted is solved.

The application discloses a device for extracting tobacco essential oil through superheated water vapor distillation and relates to the technical field of tobacco processing. The device comprises a distillation tank and a driving pipe, which penetrates the top of the distillation tank in a rotating sealing manner. A material supporting part is arranged in the distillation tank and comprises a main shaft, a plurality of bone supporting frames, a supporting net and a pushing block. The main shaft is slidingly sealed in the driving pipe. One end of each bone supporting frame is hingedly connected to the lower end of the main shaft. The supporting net is fixed between adjacent bone supporting frames. The pushing block is coaxially connected to the bone supporting frames and abuts against the lower end of the driving pipe. When the main shaft slides up and down, the lower end of the driving pipe extrudes or releases the pushing block, so that the bone supporting frames are opened or folded, thereby driving the supporting net to be unfolded or folded. The superheated steam enters from the bottom of the tank and uniformly penetrates the whole material layer from bottom to top, thereby avoiding the steam short circuit phenomenon and solving the problems of uneven steam penetration and low extraction efficiency in the prior art. The device improves the essential oil extraction rate and the material heating uniformity.

The utility model belongs to the field of spliced boats, and particularly relates to a water jet propulsion type magnesium-aluminum alloy spliced boat which comprises a main body, a filtering propulsion assembly is arranged on one side of the main body, and the filtering propulsion assembly comprises a filtering piece and a propulsion piece; the filtering part comprises a servo motor, a spiral auger blade is fixedly installed at the output end of the servo motor and movably installed in an inner cavity of the filtering bin, a water inlet channel is fixedly installed at the bottom of the filtering bin, an arc-shaped filtering net is fixedly installed at the top of the filtering bin, and a water conveying channel is fixedly installed through the arc-shaped filtering net. A chip removal channel is fixedly mounted on one side of the bottom of the filtering bin; the spiral auger blade of the filtering piece is matched with the arc-shaped filtering net to rotationally convey impurities, the impurities are guided to the chip removal channel to be discharged, the problem that a water inlet channel of a traditional boat is prone to being blocked is solved, and the reliability of a propelling system is improved.

The utility model provides a bubbling type acid mist washing tower which comprises a tower body, an air inlet pipeline and an aeration pipe, an alkaline solution is contained in the tower body to wash acid mist, the air inlet pipeline extends into the tower body from the outside to discharge the acid mist into the tower body, the aeration pipe is arranged at an outlet of the air inlet pipeline, and the acid mist enters the alkaline solution from the aeration pipe to react. According to the bubbling type acid mist washing tower disclosed by the utility model, due to the arrangement of the aeration pipe, acid mist can uniformly enter an alkaline solution to react, so that the treatment efficiency of the acid mist is effectively improved, and the problems of short gas-liquid contact time and low acid removal efficiency of the existing single-stage spray tower are solved; the porous plate and the filler are arranged, so that the gas-liquid contact area is further increased, the reaction efficiency of acid mist and an alkaline solution is improved, and the acid removal effect is enhanced; by arranging the spray heads and the multiple groups of supporting frames, acid mist is treated for multiple times, so that the acid removal efficiency is further improved, and meanwhile, the problem that an existing packed tower is easy to block is solved.

The present application relates to the field of ore fluidization magnetization roasting, and particularly provides a dust leakage and gas backflow prevention hood for a suspension roasting furnace and a use method, the hood comprises a wind cover, a fixing plate and a core pipe; a gas cavity is formed in the wind cover, a plurality of wind cover air outlets are uniformly arranged on the wind cover in the circumferential direction of the wind cover body, and the gas cavity is in communication with the wind cover air outlets; the core pipe is arranged in the gas cavity of the wind cover, a core pipe gas channel coaxial with the core pipe is formed in the longitudinal direction of the core pipe, the core pipe gas channel is located in the gas cavity, one end of the core pipe gas channel is a core pipe air outlet, the core pipe air outlet is in communication with the gas cavity, the other end of the core pipe gas channel is a core pipe air inlet, and shunt pipes in communication with the core pipe gas channel are arranged on both sides of the core pipe gas channel; the shunt pipes are arranged in an inclined downward manner; the inclination directions of adjacent shunt pipes on the left and right sides are different, and the inclination directions of adjacent shunt pipes on the same side are the same; the hood for the suspension roasting furnace has good dust leakage and gas backflow prevention performance, and ensures stable, efficient and safe operation of the suspension magnetization roasting furnace.

The utility model relates to cyclone separator technical field discloses a kind of cellulose ether with cyclone separator discharging device, including separator shell, separator shell side is equipped with airflow port, top is equipped with separation port, bottom is equipped with material discharge valve;Separator shell bottom is connected with anti-blocking discharging shell, motor is installed on the outside of anti-blocking discharging shell, motor is connected drive rod by belt drive assembly, drive rod penetrates anti-blocking discharging shell side wall and extends to its inside, at least one material distribution connecting rod is fixed on drive rod, arc material distribution piece is connected to the end of material distribution connecting rod, arc material distribution piece surface is equipped with multiple material distribution bosses.The anti-blocking discharging shell and arc material distribution piece structure that are set, effectively solve the problem that cellulose ether powder is easily blocked in discharging process.Drive rod is driven by motor to drive arc material distribution piece to rotate, material distribution boss uniformly disperses the material accumulated, avoids the accumulation of material in anti-blocking discharging shell inside, guarantees the continuity and fluency of discharging.

The utility model relates to caustic soda production equipment technical field discloses membrane filter and caustic soda primary brine refining system, including the body, the bottom dead fixedly connected with the feed inlet of body, the bottom dead fixedly connected with the discharge gate of body, the front end of feed inlet is provided with pretreatment mechanism, the rear end of discharge gate is provided with sealing mechanism, the pretreatment mechanism includes the pipe body, the outside slide connection of pipe body is in the front end of feed inlet, the inside of pipe body is provided with filter screen, the top fixedly connected with the limiting block of pipe body, the inside fixedly connected with telescopic column of limiting block. The utility model solves the problem that the larger particle's impurity is easy to jam or wear the core filter membrane in the prior art, reaches to the technical effect that the salt water carries out the primary filtration, effectively protects the core filter membrane, prolongs its service life, and improves the overall filtering effect.

The invention belongs to the technical field of industrial fan equipment, and particularly relates to an industrial high-pressure fan integrated with air filtration, which comprises a fan, a connecting pipe I, a connecting pipe II, a connecting pipe III, a gear ring II and a gear ring III, the output end of the fan is fixedly connected with an air outlet, one end of the connecting pipe I is provided with a limiting groove II, and the other end of the connecting pipe I is provided with a limiting groove II; an adjusting groove is formed in the other end of the first connecting pipe, and a third limiting groove is formed in one end of the second connecting pipe. The air inlet pipe is turned over until the pipe opening faces downwards through the rotating assembly, the rotating assembly is matched with the transmission assembly to drive a second gear ring and a third gear ring to rotate, and a first filter screen is forced to generate violent vibration through the impact of a first sliding block and a first sliding ball and the elastic effect of a first spring; and meanwhile, the impact of a second sliding block and a second sliding ball is matched with the elastic effect of a second spring to force a second filter screen to generate violent vibration, the effect that attached dust can be shaken off and discharged along the gravity without disassembly is achieved, and the problems that the filter screen is prone to being blocked and difficult to clean are solved.

The utility model discloses a kind of spray pipe structures of cloth bag dust collector, it is related to cloth bag dust collector technical field, to solve the current existing cloth bag dust collector's spray pipe structure's spray nozzle is easy to block technical problem, including spray pipe, the spray pipe one end is equipped with mounting bracket, several spray nozzles are installed in linear equidistance array on the spray pipe, the spray nozzle is communicated with spray pipe, mounting assembly is installed on the mounting bracket, several one-way blocking members are installed in linear equidistance array on the mounting assembly, the one-way blocking member can correspond with spray nozzle, the utility model is blocked with independent one-way blocking member in each spray nozzle, blow open dust removal when spraying, one-way blocking member is automatically blocked at spray nozzle to prevent dust backflow when not spraying, and one-way blocking member is independently installed on mounting assembly, and it is convenient to quickly disassemble, repair and replace.

This invention relates to the field of chemical reaction equipment technology, and more specifically, to a chemical reaction system equipped with a helical tube reactor. The purpose of this invention is to solve the problems of low heat transfer efficiency and long reaction time in synthetic chemical reactions. It includes a micro-mixer, a helical tube reactor, and a cooling device connected in sequence. The input end of the micro-mixer is connected to a first feed pipe, a second feed pipe, and a third feed pipe for introducing substances into the micro-mixer. This invention organically combines a micro-mixer and a helical tube reactor, improving mixing efficiency through the micro-mixer and enhancing heat transfer efficiency between the reactant liquid and the cooling medium through the helical tube reactor, thereby accelerating the reaction rate and improving reaction safety.

The utility model relates to the technical field of sewage treatment, and solves the problems that during sewage treatment, garbage in water is attached to a grid, directional cleaning and collection cannot be realized, inconvenience is brought to later cleaning, the cleaning difficulty is increased, the grid is blocked after a long time, and the water passing rate is influenced. The grid for sewage treatment comprises a gantry frame, fixing plates are symmetrically arranged on the inner side wall of the gantry frame, a motor A is arranged at the top end of one fixing plate, the output end of the motor A penetrates through the fixing plate to be fixedly connected with a rotating shaft A, and the surface of the rotating shaft A is sleeved with a grid belt. The side, away from the rotating shaft A, of the grid belt is sleeved with a rotating shaft B, the two ends of the rotating shaft B are rotationally connected with the fixing plates through bearings, and a plurality of conical rods are arranged on the surface of the grid belt. A trapezoidal frame is fixed to the top of the gantry frame, a motor B is arranged on the side face of the trapezoidal frame, and the output end of the motor B penetrates through the trapezoidal frame and is fixedly connected with a roller.

This invention discloses a liquid manure spraying system suitable for various land conditions, comprising a flexible traction mechanism and a self-balancing application device. The flexible traction mechanism includes a traction motor, a control coil driven by the traction motor, and a flexible traction rope mounted on the control coil. The self-balancing application device includes a chassis, a spraying rod, and a rubber-plug nozzle. The chassis has a rubber tire structure and is connected to the flexible traction rope. During spraying, the flexible traction rope pulls the chassis upwards at an angle. A shock-absorbing structure is installed inside the chassis. The spraying rod includes a fixed rod and a telescopic rod. The fixed rod is fixedly mounted on the chassis and connected to a storage tank via a liquid inlet pipe. The lower end of the telescopic rod cooperates with the fixed rod, and the upper end is equipped with a rubber-plug nozzle. This invention can solve the problems of pipe blockage, uneven spraying, poor spraying effect, and intelligent farmland fertilization in existing equipment, promoting the development of agricultural fertilization towards a more intelligent, convenient, and precise direction.

This invention relates to the field of wastewater treatment technology, and in particular to a double-layer limiting plastic pin cleaning wastewater treatment tool, including a wastewater cylinder and a starting component for treating double-layer limiting plastic pin cleaning wastewater on a support block. Through the arrangement of the starting component, filtration component, and concentrating component, the bearing bar and bearing rod drive the scraper at the bottom of the lifting column to reciprocate and scrape along the curved surface of the irregular platform. The bearing plate continuously impacts and touches the inner wall of the cylinder, generating high-frequency vibration. The scraping and vibration work together to clean the plastic impurities adhering to the surface and pores of the irregular platform mesh in real time. Addressing the electrostatic adsorption effect generated by the friction between the release agent film on the surface of the plastic debris and the water flow, this dual action prevents plastic impurities from embedding and jamming the filter pores, avoiding the core problems of easy filter layer clogging, continuous decline in flow efficiency, and excessive fluctuations in suspended solids in the effluent. It maintains a stable effective flow area on the irregular platform filter surface and reduces the frequency of filter layer disassembly and replacement.

This utility model discloses a high-flow, anti-clogging sewage pump, relating to the field of sewage pump technology. It includes a pump casing, inside which a drive assembly is installed. A first impeller is mounted on the drive assembly. A second impeller is coaxially mounted on the first impeller. The outer blades of the first impeller are arc-shaped, and the angle between the outer blades of the first impeller and the axis of the first impeller is greater than the angle between the outer blades of the second impeller and the axis of the second impeller. In operation, the drive assembly is powered via a cable, causing the first and second impellers to rotate at high speed. The cooperation of the first and second impellers causes sludge to rapidly flow from a low-pressure area to a high-pressure area. The second impeller generates greater thrust on the sludge, resulting in a larger flow rate and head. This bottom-suction, top-discharge direct-supply sewage pump effectively solves the problem of easy clogging.

This utility model relates to the field of particle shaping technology and discloses a brown fused alumina airflow shaping machine for dust collection. It includes two support legs, with a tank body fixedly connected to the top of the second support leg. An air supply pipe is fixedly connected to the outer wall of the tank body, and an air inlet pipe is fixedly connected to the outer wall of the air supply pipe. A quick-release assembly is provided on the outer wall of the tank body, including a fixing block. One side of the fixing block is fixedly connected to the outer wall of the tank body, and a threaded rod is rotatably connected inside the fixing block. A gasket is fitted on the outer wall of the threaded rod, and a rotary lock is threadedly connected to the outer wall of the threaded rod. In this utility model, rotating the rotary lock until the connecting plate and the fixing block fix the nozzle, achieving the function of quickly replacing the nozzle through the threaded rod and rotary lock. This solves the problem of difficulty in replacing the nozzle used to spray high-pressure gas in traditional brown fused alumina airflow shaping machines for dust collection when damaged, improving the maintainability of the machine.

This application relates to the field of lithium battery recycling and discloses a crusher for dismantling waste lithium batteries, including a bottom support. A crushing shell is fixedly installed on the top surface of the bottom support, and a sealed feeding shell is fixedly installed on the top surface of the crushing shell. A feeding port is opened on the front side of the sealed feeding shell. Two crushing rollers are rotatably connected inside the crushing shell through a bearing. The crushing rollers cooperate with an external drive mechanism to achieve efficient crushing of waste lithium batteries. The crushed material is filtered by two filter screens to achieve classified collection of materials of different diameters. The rotation of the rotating shaft and the metal striking plate drives the filter screens to vibrate, which can significantly improve the filtration effect. The conical structure at the bottom of the crushing shell guides smaller particles and liquids to concentrate, which is convenient for recycling. This can effectively solve the problems of easy clogging of crushed materials and screening.

The present application relates to feed sewage residue processing technical field, and disclose a kind of feed sewage residue processing device, including processing cylinder, the top of processing cylinder is equipped with cover plate, can be used to process the waste residue after separation, the bottom of the processing cylinder is provided with drain, the top of the processing cylinder is provided with feed inlet, the inside of the processing cylinder is provided with processing mechanism, by motor drive shaft separation cylinder high-speed rotation, make the feed sewage residue injected into separation cylinder under centrifugal force be forced to move to cylinder wall.Liquid part is lighter in quality, more easily pass through filter port and be thrown out to processing cylinder in centrifugal field, while solid residue is intercepted in separation cylinder inside, substantially shorten solid-liquid separation time, and with the continuous rotation of separation cylinder, by poking plate to realize periodic, reciprocating poking cleaning to multiple filter ports, effectively solve the problem of filter screen easy to block, ensure the continuity and stability of solid-liquid separation process, significantly improve processing efficiency.

The utility model relates to the technical field of paving devices, in particular to a modularized combined type permeable paving device which comprises a permeable paving frame, the inner wall of the permeable paving frame is fixedly connected with two partition plates which are arranged in a crossed mode, and two symmetrical grooves are formed in the top face of the permeable paving frame. The permeable paving device has the advantages that through the collaborative design of the metal filter screen and the groove, the problem that traditional permeable paving is easy to block due to impurities is effectively solved. The metal filter screen is installed at the top of the permeable paving frame in an embedded mode, and large impurities such as fallen leaves and silt can be effectively intercepted and prevented from entering the groove. A plurality of independent filtering areas are formed by the cross structures of the partition plates, so that even if a local filter screen is blocked, other areas can still keep a normal drainage function. Through the communication design of the drainage holes and the grooves, it is ensured that filtered rainwater can be rapidly drained, the anti-blocking capacity of the paving device is remarkably improved through the multi-layer filtering system, and the maintenance period of the system is prolonged.

The utility model belongs to the field of fishpond water quality purification, and provides a fishpond water quality purification treatment device which comprises a primary purification assembly, a secondary purification assembly and a water purification tank, the primary purification assembly comprises a shell, an inner barrel, filter particles, a backwash pipe, a three-way valve and a sewage pump; an inner cylinder is mounted in the shell, filter particles are arranged in the inner cylinder, and the inner cylinder divides the interior of the shell into an upper chamber and a lower chamber; the upper chamber is communicated with the secondary purification assembly through a middle pipe; according to the utility model, primary physical filtration is carried out through the first-stage purification assembly, so that large-particle impurities in water are removed; the primary purification assembly is designed with a back flushing function, so that physical filtering particles can be cleaned in time; then biological filtration is carried out through the secondary purification assembly; finally, the purified water is introduced into the water purification tank and flows back to the fish pond through the water return pipe, and circulating purification of water is achieved.

This invention discloses a system and method for concentrating waste acid from the sulfuric acid process for titanium dioxide production. The system includes a preheating device, an MVR (Medium-Voltage Reduction) heating and evaporation device, a cooling and curing device, and a vacuum device. The preheating device is connected to the MVR heating and evaporation device, and the vacuum device is also connected to the MVR heating and evaporation device. The MVR heating and evaporation device includes a heater, an evaporator, a steam compressor, and a first circulating pump. The heater is connected to the first circulating pump, the evaporator, and the cooling and curing device. The circulation ports of both the preheating device and the evaporator are connected to the first circulating pump. The evaporator is connected to the steam compressor, which is connected to the heater. The heater is connected to a condensate tank. This invention repressurizes and reheats secondary steam as a heat source for the heater, and recycles the condensate generated during production for preheating the waste acid. The entire production process is short and cost-effective, effectively achieving the production goals of energy conservation, emission reduction, cost reduction, efficiency improvement, and environmental protection.

The utility model relates to the technical field of filter grids, and discloses a filter grid with a cleaning structure, which comprises a filter grid mounting frame, a filter grid plate is fixedly mounted on the inner wall of the filter grid mounting frame, and filter holes are uniformly formed in the outer wall of the filter grid plate at equal intervals. Micro sliding grooves are uniformly formed in the front surface of the filtering grating plate at equal intervals. The spray-washing pipe head is matched with a small water pump, cleaning liquid is sprayed at high pressure, the spray-washing pipe head can go deep into filtering holes, small impurities can be conveniently removed, the problem that a traditional filtering grating is prone to being blocked is solved, the filtering efficiency is effectively maintained, the cleaning liquid bottle is matched with the clamping type cleaning liquid bottle, the cleaning liquid bottle is convenient to replace, meanwhile, the sewage collecting tank is provided with two grooves, and the cleaning effect is good. Impurity sewage generated by scraping and cleaning is collected respectively, centralized treatment is facilitated, the risk of secondary pollution is reduced, and the effects of improving the cleaning efficiency and reducing the maintenance cost are achieved.