28results about How to "Improve purification rate" patented technology

The invention belongs to the technical field of vaccine reagent extraction, and particularly relates to a saponin adjuvant purification method which is characterized by sequentially comprising the following steps: crushing bark, adding purified water for soaking, taking out supernate, centrifuging, filtering, carrying out ion exchange chromatography, concentrating and exchanging liquid, roughly purifying, finely purifying and the like to obtain a high-purity QS-21 sample. The purification method provided by the invention is suitable for large-scale production, and uniform and high-purity QS-21 can be obtained.

The invention belongs to the technical field of pesticide chemistry, and particularly relates to a preparation method of a penconazole active compound, which comprises the following steps: by taking 2-(2, 4-dichlorophenyl) valeraldehyde and 1, 2, 4-triazole as starting raw materials, condensing and reducing under the action of a catalyst to obtain a penconazole crude product, and recrystallizing to obtain the penconazole active compound. Compared with the prior art, the penconazole active compound prepared by the invention has the advantages that the conversion rate of the raw materials is greatly improved, the problem that a derivative is generated by using potassium borohydride as a reducing agent is solved, so that the penconazole has atom economy and environmental protection property, the process flow is simpler, the operation steps of subsequent treatment and the use of a solvent are reduced, and the cost is reduced. The method is simple in operation and low in energy consumption, impurities in the penconazole preparation process are effectively removed, the purification rate and the yield of the penconazole technical are greatly improved, and the strict requirements for high-quality pesticides in agricultural production are met.

The invention relates to the technical field of preparation of integral foam metal catalysts, in particular to a lattice distortion induced catalyst for catalytic oxidation of acetone and a preparation method thereof, and the preparation method comprises the following steps: step 1, selecting and cutting raw materials; step two, acid pretreatment and cleaning; 3, preparing a solution; step 4, hydro-thermal synthesis; 5, washing and drying the catalyst; and 6, performing electrothermal induction on the catalyst. The lattice distortion induced monolithic catalyst for electrothermal concerted catalytic oxidation of acetone is prepared in a hydrothermal synthesis manner, active component loading and electronic structure regulation are synchronously realized, energy consumption is remarkably reduced in catalytic oxidation of acetone, the problems of catalyst sintering and active center inactivation are relieved, and the method is suitable for industrial production. And the activity at low temperature is improved.

The invention discloses a water cyclone for purifying waste gas, comprising a cylindrical water cyclone box and a purification chamber arranged in the water cyclone box. The key points of the technical scheme are that a plurality of air inlet holes for waste gas to enter are opened on the side wall of the purification chamber. After water is sprayed out through the water spray holes, it fully contacts with the waste gas and then mixes with organic matter in the waste gas. The waste gas and water mist move upward through a fan. A first motor drives a centrifugal disc to rotate. The water mist is adsorbed on the bottom surface of the centrifugal disc and moves toward the outer side surface of the centrifugal disc through centrifugal force. The water mist quickly converges through a guide body, which speeds up the convergence speed of the water mist, so that the water mist can be separated from the centrifugal disc more quickly, thereby speeding up the waste gas purification efficiency. The water mist is then thrown onto a water retaining disc and a water collecting disc and discharged from a water outlet. The two centrifugal discs enable the water mist that bypasses the lower centrifugal disc to be blocked on the upper centrifugal disc, thereby increasing the waste gas purification rate.

This invention relates to the field of high-purity aluminum purification technology and discloses a high-purity aluminum vacuum purification device, including a support and a crucible fixedly connected to the top of the support. The crucible has several release grooves on its bottom circumference, a heating assembly is arranged around the crucible, a sealing cover is movably hinged to the top of the crucible, an air extraction port is provided at the upper end of the sealing cover, a locking ring is rotatably connected to the bottom of the sealing cover, and several locking grooves are arranged around the outer circumference of the locking ring. Several locking blocks arranged in a circumferential array are fixedly connected to the inner wall of the top of the crucible. This invention, through the automatic closing and locking assembly of the sealing cover, can control the uniform pressure applied to all parts of the sealing cover edge, resulting in rapid and reliable sealing operation, thereby enhancing sealing performance and improving purification quality. Furthermore, without affecting purification quality, it greatly increases the purification rate of high-purity aluminum, achieving uniform cooling of the aluminum ingot from the core to the outer wall, ensuring the stability of directional crystallization.

The present invention relates to an exhaust gas purification device and aims to improve the purification rate of hydrocarbons. The exhaust gas purification device (200) is provided with a three-way catalyst (220), which includes: a downstream catalyst layer (240) arranged in an exhaust pipe, including a precious metal material containing any one or more of Pd, Rh and Pt and an OSC material containing at least cerium dioxide; an upstream catalyst layer (230) arranged in the exhaust pipe on the engine side than the downstream catalyst layer (240), including a precious metal material and an OSC material, and the content of cerium dioxide is less than that of the downstream catalyst layer (240).

The invention relates to the technical field of chemical manufacturing, in particular to a phenylenediamine rectification purification tower. According to the technical scheme, the device comprises a rectifying section and a stripping section fixed to the lower portion of the rectifying section, a rectifying plate structure is arranged on the inner wall of the rectifying section, and a filter opening mechanism is arranged at the top end of the rectifying plate structure and comprises a plurality of fixed bases fixed to the top end of the rectifying plate structure; the top ends of the multiple fixed bases are fixedly connected with steam guide blocks, the outer walls of the multiple steam guide blocks are slidably connected with airflow guide structures, the top ends of the multiple steam guide blocks are provided with air guide ports in a penetrating manner, the stripping section comprises a stripping tank, and the inner wall of the stripping tank is provided with a filtrate mechanism and a filter guide mechanism. According to the phenylenediamine rectification purification tower, the purification rate of phenylenediamine is increased, repeated purification and rectification are not needed any more, time is saved, and the phenylenediamine rectification purification tower has the functions of being better in phenylenediamine purification effect and higher in efficiency.

The invention belongs to the technical field of nitrogen purification, and discloses a purification device for high-purity nitrogen, which comprises a condensation box main body, one side of the condensation box main body is fixedly connected with a gas inlet, the other side of the condensation box main body is fixedly connected with a gas outlet, and the bottom of the condensation box main body is fixedly connected with a plurality of supporting legs. A driving motor is started, the driving motor rotates to drive a bearing disc to rotate, a first fan-shaped discharging groove rotates along with the bearing disc when the bearing disc rotates, after the first fan-shaped discharging groove is far away from a display column, the display column is ejected out by the bearing disc, the bearing disc pushes the display column to move at the moment, and the display column moves to drive a limiting plate to move; the limiting plate moves to drive the spring to be compressed, at the moment, whether the first fan-shaped discharging groove and the second fan-shaped discharging groove are staggered or not can be judged by checking the length of the portion, stretching out of the outer side of the condensation box body, of the display column, and therefore the internal sealed environment is guaranteed, the cooling effect is improved, and the reaction rate is increased.

The invention provides a method for preparing synthesis gas by electrochemical conversion of carbon dioxide, which comprises the following steps: feeding raw material gas containing carbon dioxide into a first absorption unit, absorbing by electrolyte to obtain a gas-liquid mixture, and sequentially separating by an electrochemical reactor and a separator to obtain gas-phase products of an anode and a cathode and electrolyte; the cathode gas-phase product is mixed with feed gas and then returns to the first absorption unit to obtain synthesis gas, and the anode gas-phase product enters the second absorption unit to obtain oxygen; and the obtained electrolyte is recycled in the reaction. The invention further provides a method for preparing synthesis gas through electrochemical conversion of carbon dioxide, raw material gas containing carbon dioxide is fed into the second absorption unit, the gas-liquid mixture reaction process is the same as that of the method, and the obtained anode gas-phase product is mixed with the raw material gas and returns to the second absorption unit to obtain oxygen. And the cathode gas-phase product enters a first absorption unit to obtain the synthesis gas. The method disclosed by the invention can effectively improve the purity of the product gas and the comprehensive conversion rate of carbon dioxide.

The utility model discloses fish culture water purification equipment, which relates to the technical field of fish culture and comprises a culture chamber and a purification equipment body, the purification equipment body comprises a stirring chamber, a purification chamber is arranged above the stirring chamber, the output end of the purification chamber penetrates through and extends into the stirring chamber, a first water suction pump is arranged on the left side of the purification chamber, and a second water suction pump is arranged on the right side of the purification chamber. A water pumping pipe is installed at the input end of the first water pump, a telescopic pipe is slidably installed on the inner wall of the water pumping pipe, the output end of the first water pump penetrates and extends into the purification chamber, and a filtering mechanism is arranged in the purification chamber. According to the aquaculture water purification device, aquaculture water can be filtered through the first filter screen and the second filter screen in the purification chamber and then enters the stirring chamber, the PH value measuring probe detects the PH value content in the aquaculture water at the moment, corresponding measures are adopted in a targeted mode according to the tested numerical value, an alum agent is put when the value is too high, and a substrate modifier is put when the value is too low; the purification effect of the purification equipment body is better on the whole, and the practicability of the equipment is improved.

The utility model discloses an outdoor circulating culture system which comprises a plurality of culture ponds, a water inlet pipe is fixedly installed at the top of one side of each culture pond, a plurality of sewage collecting pits are arranged in the culture ponds, the sewage collecting pits are communicated with a sewage discharging pipe, the sewage discharging pipe is communicated with a main sewage discharging pipe, one side of the main sewage discharging pipe is communicated with a water discharging pipe, and the other side of the main sewage discharging pipe is communicated with a water outlet pipe. The other side of the main blow-off pipe is communicated with a U-shaped water return pipe; a first water pump is fixedly mounted in the middle of the U-shaped water return pipe, an aquatic plant purification tank, a sedimentation tank, a filter tank, an anaerobic tank and an ultraviolet disinfection tank are sequentially connected from right to left along the flow of water, the other side of the ultraviolet disinfection tank is communicated with a second return pipe, and the second return pipe is communicated with a second water pump; the second water pump communicates with the water inlet pipe through a flow guide pipe. According to the utility model, closed water circulation of single circulation can be realized, the overall water circulation benefit is increased, the effects of energy conservation and carbon reduction are achieved, the structure is simple, the maintenance is easy, and the economic productivity of agriculture and fishery is improved.

The invention discloses a drainage method for hydraulic engineering construction, and belongs to the technical field of sewage treatment. According to the drainage method for hydraulic engineering construction, a working barrel with a water inlet pipe at the top is included, an intercepting net is fixedly connected into the working barrel, the water outlet end of the water inlet pipe faces the intercepting net, a rotating shaft is rotationally arranged in the working barrel, a rotating pressing mechanism is arranged on the rotating shaft, and the pressing end of the rotating pressing mechanism is attached to the intercepting face of the intercepting net; the spiral plate is arranged below the intercepting net, a circulating conveying mechanism is arranged in the working barrel, a flow dividing channel is formed in the rotating shaft, and the output end of the flow dividing channel is arranged on one side of the intercepting face of the intercepting net. Water needing to be discharged can be rapidly disinfected, part of impurities in the water in the discharging process can be filtered, meanwhile, liquid medicine can be added into a discharged water source, the liquid medicine can be rapidly dissolved into the water source, the purification rate of the water source is increased, the discharged water source reaches the standard, and the water pollution phenomenon is reduced.

The utility model discloses packaging bag printing equipment and a waste gas treatment device thereof. The waste gas treatment device comprises a printing equipment gas inlet, a gas collecting pipeline, a mounting platform, an activated carbon purification gallery, a catalytic oxidation box, a centrifugal fan and an exhaust chimney. Waste gas generated by the printing equipment can be sucked in by the negative pressure suction fan in the air inlet of the printing equipment and enters the activated carbon purification gallery which obliquely extends upwards through the air collecting pipeline, the flow speed of the waste gas is controlled, an inclination angle is formed between the flow direction and the activated carbon filter screen, the waste gas can be fully adsorbed by activated carbon, and the extremely high purification rate is achieved; then the waste gas is sequentially decomposed by the ultraviolet light catalytic decomposition chamber and the oxidative decomposition chamber, organic matters in the waste gas can be decomposed into harmless substances through catalytic oxidation, and finally the treated gas is pumped out by the centrifugal fan and is upwards discharged through the exhaust chimney. Therefore, the printing waste gas can be prevented from causing major threats to the environment and the body health of workshop operators, and the safety of the environment and the operators is effectively guaranteed.

The utility model relates to the technical field of quartz sand purification, and discloses a quartz sand high-temperature activating and purifying device which comprises a working box and a heating box, the heating box is fixedly connected to the bottom of an inner cavity of the working box, and a discharging mechanism used for discharging quartz sand is arranged at the bottom of the working box; a filter plate is slidably connected to an inner cavity of the heating box, connecting blocks are fixedly connected to the two sides, away from each other, of the bottom of the filter plate, transmission rods are rotatably connected to the bottoms of the connecting blocks through rotating shafts, and rotating discs are rotatably connected to the two side walls, away from each other, of the inner cavity of the heating box; connecting rods are rotationally connected to the eccentric positions of the side walls, close to each other, of the two rotating discs, each connecting rod is rotationally connected with one end of a transmission rod, and a rotating rod is fixedly connected between the side walls, close to each other, of the two connecting rods; according to the scheme, quartz sand can be uniformly heated, the purification rate of the quartz sand is increased, and the quartz sand is convenient to discharge and use.

The invention relates to the technical field of environmental science and engineering, and discloses a metallurgical sewage treatment detection system, which comprises a monitoring module, an analysis module, a management module and a warning module, and is characterized in that the analysis module obtains a data set collected by the monitoring module to calculate the sludge removal rate and treatment efficiency of a physical pool, a chemical pool and a biological pool; the method comprises the following steps: collecting the current removal rate or treatment efficiency, comparing the current removal rate or treatment efficiency with historical data, if the current removal rate or treatment efficiency is found to be lower than a set standard, starting sludge removal work or increasing the dosage of chemicals, and meanwhile, turning on a corresponding warning lamp through a warning module which is provided with warning lamps with different names for each pool; through the design of the system, the automation level of sewage treatment can be improved, the continuity and the stability of the treatment process are ensured, meanwhile, the operation efficiency and the reliability of the whole system are improved, and the system is suitable for popularization and application. Therefore, the sewage treatment has the beneficial effects of high adaptability and flexibility.

The process for producing the high-strength cardboard paper from the waste cartons is characterized by comprising the following specific steps: step 1, pretreating the waste cartons with alkali liquor; 2, the pretreated waste paper is conveyed to a paper shredder to be shredded, and water is added in the shredded process to prepare paper pulp; step 3, adding water filtering enzyme into the prepared paper pulp, and modifying paper-making industrial pulp fibers through enzyme treatment; 4, feeding the paper pulp subjected to enzyme treatment into a white water tank, diluting with white water, and carrying out coarse screening and fine screening purification on the diluted paper pulp to finally obtain good paper pulp; 5, feeding the good paper pulp into a disc mill type heat dispersion machine to inactivate the water filtering enzyme; sixthly, the pulp is fed into a pulp flowing box, wet paper sheets are obtained through net forming and vacuum dewatering on a net part, the wet paper sheets are further dewatered through a pressing part and then dried through a drying part, and dry paper sheets are obtained. Alkali liquor treatment is added to improve the pulp purification rate, and enzyme treatment is added to improve the paper strength.

The present application provides a guide plate for an oil mist collector, comprising: a plate body, the plate body is arranged between the air inlet of the oil mist collector and the heat exchanger; a guide area is arranged on the plate body, the guide area corresponds to the position of the heat exchanger in the oil mist collector; a plurality of guide holes are arranged on the guide area; the guide area is used to uniformly transmit the gas entering the air inlet to the heat exchanger; the plate body is also provided with a liquid pipe installation hole and a gas pipe installation hole. According to the guide plate of the present application, the flow condition of oil and gas can be effectively improved, and the heat exchange efficiency of oil and gas can be improved.

The utility model relates to the technical field of pharmaceutical wastewater filtering equipment, in particular to a titanium rod filter which comprises a bottom plate and a filtering box, a shaking mechanism is installed on one side of the bottom plate and one side of the filtering box and comprises a supporting plate and a motor, and an electric push rod is fixedly connected to the upper portion of the supporting plate. An electric push rod is arranged in the filter box, one end of the electric push rod is fixedly connected with the outer wall of the filter box, the power output end of the motor is fixedly connected with a rotating rod, and the outer wall of the rotating rod is fixedly connected with a stirring plate. The filtering box moves back and forth on the rolling groove through the moving wheels, the filtering box moves to drive internal pharmaceutical wastewater to shake, then the motor drives the rotating rod to rotate, the rotating rod drives the stirring plate to rotate, the stirring plate rotates to accelerate the flowing speed of the pharmaceutical wastewater, and then the contact area of the pharmaceutical wastewater and the titanium rod is increased. The purification rate and the filtration of the pharmaceutical wastewater are improved.

This invention relates to the field of desulfurization technology for reclaimed rubber, specifically a desulfurization treatment device and method for waste tire reclaimed rubber, comprising: a treatment tank, on which a gas guide pipe is installed, the gas guide pipe having an "L"-shaped structure; a support arm, connected to the gas guide pipe, the support arm having multiple pressure relief ports equidistantly arranged on one side facing the bottom of the treatment tank; a pressure sensing component, connected to the gas guide pipe, the pressure sensing component being able to drive the support arm toward or away from the bottom of the treatment tank according to the pressure in the gas guide pipe; a guide plate, disposed in the treatment tank and cooperating with the pressure relief ports, enabling the gas and liquid in the treatment tank to rotate; and a linkage component, connecting the pressure sensing component and the guide plate, the linkage component being able to drive the guide plate to rotate to change its deflection angle when the pressure in the gas guide pipe changes, thereby increasing the retention time of the waste gas in the purification liquid and improving the treatment effect.

The invention discloses a multi-stage separation anaerobic reactor to avoid clogging, and relates to the technical field of sewage treatment. The multi-stage separation anaerobic reactor to avoid clogging is characterized in that: the anaerobic reactor comprises a water supply tank and an air supply tank, a supply pump is arranged in the water supply tank, the supply pump is connected with the reaction tank through a pipeline, the air supply tank is connected with the reaction tank through a conduit, a multi-stage separation plate is arranged in the reaction tank, a gas-liquid separator and a sludge gathering plate are arranged on the multi-stage separation plate, a plurality of reflow grooves are arranged on the inner wall of the reaction tank, the reflow grooves are connected with the sludge gathering plate, a sludge bed is arranged in the reaction tank, a sludge discharge component is arranged in the sludge bed, the sludge discharge component is connected with the sludge bed, a sludge bed is arranged on the sludge bed, an expansion motor is arranged on the sludge bed, an expansion stirring wheel is arranged on the output end of the expansion motor, a waste gas recovery cylinder is arranged on the top of the reaction tank, a recovery pump is arranged in the waste gas recovery cylinder, and the invention has the effects of automatic impurity removal and multi-layer sludge aggregation.

The purification unit comprises a plurality of first electrodes and a plurality of second electrodes, the first electrodes and the second electrodes are hollow pipes with different diameters, the first electrodes and the second electrodes are coaxially sleeved and are sequentially and alternately arranged in the direction from the axis to the periphery, and the purification unit further comprises an upper connecting support and a lower connecting support. The upper connecting support is arranged at one end of each first electrode and electrically connects and fixes the first electrodes together, the lower connecting support is arranged at one end of each second electrode and electrically connects and fixes the second electrodes together, and a first opening is formed between the other ends of the adjacent first electrodes. A second opening is formed between the other ends of the adjacent second electrodes, the plurality of first electrodes connected together are inserted between the plurality of second electrodes connected together from the second opening, and the plurality of second electrodes connected together are inserted between the plurality of first electrodes connected together from the first opening, and the first electrodes and the second electrodes are alternately arranged in sequence.

The utility model belongs to the technical field of tail gas recovery and purification, and discloses an epoxy silane synthesis tail gas recovery and purification device which comprises a purification box, the bottom of the purification box is connected with a feeding assembly, the bottom of the purification box is further provided with a supporting frame and a driving motor, and the driving motor is connected with the feeding assembly; the feeding assembly comprises a linkage assembly movably installed at the bottom of the purification box, the side face of the linkage assembly is in transmission connection with the driving motor, the bottom of the linkage assembly is connected with a feeding assembly, and the upper end of the linkage assembly extends into the purification box and is fixedly connected with a dispersion cover. The outer surface of the dispersion cover is fixedly connected with a plurality of stirring plates which are uniformly distributed. Due to the arrangement of the dispersion cover, the entering purification reagent can be quickly dispersed into the purification box under the matching of the stirring plate and the like, and the tail gas and the purification reagent can be further promoted to be fully mixed due to the stirring effect of the stirring plate on the tail gas, so that the purification rate is improved.

The present invention relates to the technical field of environmental protection engineering construction, and discloses an environmental protection box and purification method with high utilization rate of desulfurization and denitration catalysts, including an environmental protection box, the right side of the environmental protection box is fixedly connected with an air inlet pipe, the left side of the environmental protection box is fixedly connected with an air outlet pipe, one side of the inner wall of the environmental protection box is fixedly connected with a sliding cavity, and also includes a pushing mechanism, including a connecting pipe fixedly connected to one end of the air inlet pipe, the end of the connecting pipe away from the air inlet pipe is fixedly connected with a limiting cover, sliding rings are slidably connected in the slots on both sides of the inner wall of the connecting pipe, an impact tube is fixedly connected to the bottom of the inner wall of the sliding ring, a cleaning ring is slidably connected to the surface slot of the connecting pipe through a slider, and a plug is inserted into the inner wall of the cleaning ring. By providing a pushing mechanism, large particles contained in the exhaust gas can be reduced, the use efficiency of the catalyst can be improved, and the cleaning device can be cleaned regularly to avoid the problem of large particles blocking the surface of the cleaning device.

The utility model discloses a kind of buried town domestic sewage treatment equipment, including processing box, the inside of processing box is separated out collection chamber I and collection chamber II by baffle I and baffle II, filter screen is movably installed between baffle I and processing box side wall, filter screen small mouth end is communicated with inlet pipe by swivel joint, other end is communicated with collection chamber I, filter screen outside is engaged connection by synchronous belt and the synchronous pulley meshing of motor I output end is equipped, lifting frame is equipped in processing box, and electric telescopic link I one end is fixedly connected in the periphery of lifting frame. The utility model is by the filter screen of rotation cooperation multistage baffle, realize solid-liquid separation, utilize the self-cleaning purpose of solid waste self-weight in the process of rotation, and cooperate oil absorption mechanism, can clean oil adsorption on sewage surface layer, avoid grease condensation in processing box influence subsequent purification step, greatly improve the purification efficiency of domestic sewage.

The present invention relates to the field of injection molding production technology, specifically, an injection mold for intelligent manufacturing, including a double-track slide and a driving mechanism, a sliding block is installed on the double-track slide, and a movable mold assembly and a static mold assembly are fixedly mounted on two sets of sliding blocks, and two output ends on the driving mechanism are respectively connected to the movable mold assembly and the static mold assembly, and the movable mold assembly and the static mold assembly slide toward and away from each other along the double-track slide through the driving mechanism to shorten the injection and demolding time of the injection molded parts. The injection mold for intelligent manufacturing provided by the present invention greatly reduces the separation rate of the movable mold and the static mold through the driving mechanism, speeds up the demolding time of the injection molded parts, and reduces the time interval between the production of two injection molded parts, and the intelligent control terminal turns on the exhaust fan so that the exhaust fan absorbs the unpleasant gas and discharges it into the purification cylinder through the air duct, which not only improves the working environment of the workshop, but also improves the physical and mental health of the operator.

The invention relates to the technical field of ovens, in particular to an oven, and aims to solve the problem that the heat dissipation effect of the oven is poor. In order to achieve the purpose, the oven comprises an oven body, a first air inlet through hole is formed in the rear surface of the oven body; the inner container is arranged in the oven body, and a baking cavity is formed in the inner container; the draught fan assembly is arranged in the oven body and comprises a draught fan, an air inlet pipeline connected to the input end of the draught fan and an air outlet pipeline connected to the output end of the draught fan, the air inlet pipeline communicates with the baking cavity to form a first air inlet channel, and the air outlet pipeline communicates with the baking cavity to form a second air outlet channel; the input end of the draught fan is further communicated with the first air inlet through hole to form a second air inlet channel, and the air outlet pipeline is communicated with the outer space of the box body. According to the oven provided by the embodiment of the invention, the heat dissipation air duct of the oven is improved, so that heat dissipation and circulation can be effectively promoted, and the heat dissipation efficiency of the oven is improved.

The utility model discloses purifying and mixing equipment for sewage circulation, and particularly relates to the technical field of sewage purification, which comprises a box body, a filter plate is used for preliminarily filtering large impurities in sewage, a threaded rod rotates forwards and backwards to drive a push plate to move forwards and backwards, the large impurities on the filter plate are pushed into a placing box, and the sewage enters the bottom of the box body. A push plate can drive bristles to move when moving back and forth so as to clean a filter plate and reduce blockage of the filter plate, and a connecting column can drive a stirring rod to rotate forwards and backwards when rotating forwards and backwards, so that the sewage and a purifying agent in the box body can be fully mixed conveniently, and the purifying rate of the sewage is increased; the first air cylinder is started to drive the pressing plate to move downwards to make contact with the large impurities, then sewage in the large impurities is pressed out, the large impurities obtained after water squeezing are left on the lifting plate, and then the second air cylinder is started to drive the lifting plate to move upwards and drive the large impurities to move out of the containing box.

The utility model discloses a multi-layer spraying structure for a spraying purification tower, relates to the field of spraying purification towers, and aims to solve the problems that most of the existing spraying purification towers in the prior art are only provided with single spraying layers, and when more harmful substances exist in waste gas, the spraying layers cannot be used for spraying the waste gas. The waste gas purification tower with a single spraying layer possibly cannot filter harmful substances in waste gas more cleanly, so that the waste gas which is not thoroughly purified is discharged from the purification tower to cause environmental pollution. A first-stage purification cavity is formed in the lower end of the middle of the interior of the purification tower, a first-stage filler assembly is fixedly connected to the middle of the first-stage purification cavity, a second-stage purification cavity is formed in the upper end of the middle of the interior of the purification tower, and a second-stage filler assembly is fixedly connected to the middle of the second-stage purification cavity; the upper end of the middle part of the secondary purification cavity is fixedly connected with a demisting assembly, and a bucket-shaped isolation hood is fixedly arranged between the primary purification cavity and the secondary purification cavity in the purification tower.