249 results about "Belt filter" patented technology

The invention discloses a high-pressure belt conveyor low-cost sludge dewatering technology, and relates to the technical field of sludge dewatering, the technology comprises the following steps: S1, in a pretreatment stage, adding a ferric chloride agent and destroying a sludge colloid structure; s2, in the conditioning stage, lime powder is added to adjust the pH value, and a porous skeleton structure is constructed; s3, adding a polyacrylamide medicament in a flocculation stage to form a compact floc; s4, a high-pressure belt filter press is used for mechanical dehydration in the dehydration stage; s5, recovering the filtrate for redissolving the medicament; s6, performing dynamic linkage optimization of chemical dosing and filter pressing parameters through a dynamic chemical dosing algorithm of the control system; the dosage of chemicals is effectively reduced, the sludge dewatering effect is improved, the sludge dewatering treatment cost is reduced, and the cyclic utilization of resources is realized; the technical problems that an existing sludge dewatering technology is too high in agent cost, low in agent matching and combination reliability and insufficient in technology adaptability are solved.

The utility model relates to a floating balance type electronic belt scale of a belt filter, which is provided with an equipment main body of the filter, filter cloth in circulating transmission is arranged on the equipment main body, the filter cloth is supported by a plurality of first carrier rollers on the equipment main body, the filter cloth is in driving fit with an adhesive tape, and the adhesive tape is wound on two driving wheels. A weighing bridge frame module consisting of more than two second carrier rollers, floating type balancing frames and weighing sensors is arranged at the discharging end of the equipment main body, the second carrier rollers are mounted at the bottoms of the floating type balancing frames, the floating type balancing frames are arranged on the left side and the right side of the filter cloth, and the weighing sensors are arranged on the floating type balancing frames. A weighing sensor is correspondingly arranged at the bottom of the floating type balancing frame and installed at the end of the equipment body. The electronic weighing scale overcomes the defects that an existing electronic weighing scale cannot adapt to a wide vacuum belt filter and has large requirements for installation space, can be installed without changing the main body structure of the vacuum belt filter, and is high in applicability.

The utility model relates to the technical field of chemical feeding devices, and discloses a chemical feeding device of a belt filter press, which comprises a sludge pipe, a sleeve and a sludge pipe, a first connecting piece and a second connecting piece are respectively arranged at two ends of the sludge pipe, the first connecting piece and the second connecting piece are respectively connected with a sludge inlet pipe of the belt filter press, and the sleeve is connected with the sludge inlet pipe of the belt filter press. A plurality of dosing holes are formed in the sludge pipe; the sleeve is connected to the outer side of the sludge pipe in a sleeving mode, a dosing space is formed between the sleeve and the sludge pipe, and the sleeve is provided with a dosing opening. The device is convenient and fast to operate in practical application, and the mixing efficiency of the medicament and the sludge can be improved.

The invention relates to the technical field of filtering equipment, in particular to intelligent efficient treatment equipment and method for sludge dewatering, and the intelligent efficient treatment equipment comprises a shell, a feeding hole, a belt type filter pressing part, a separated water treatment part, a separated sludge storage part, a cleaning part, a monitoring module and a control module. The belt type filter pressing part is used for carrying out multi-stage filter pressing on sludge by adopting three groups of press rollers, the separated water treatment part is used for collecting filtrate by stages through a multi-stage water storage cavity, and the cleaning part is used for circularly spraying and cleaning filter cloth by utilizing separated water. The monitoring module detects the water level of each water storage cavity in real time, and the control module dynamically adjusts the dehydration parameters based on the first dehydration characterization value and the second dehydration characterization value and automatically diagnoses reasons and optimizes the operation state when the dehydration effect does not reach the standard. Through intelligent monitoring and self-adaptive regulation and control, the dehydration efficiency is effectively improved, the blockage of the filter cloth is reduced, and the device has the advantages of high efficiency, energy conservation, stable operation and the like, and is suitable for various sludge dehydration treatment scenes.

The invention discloses a novel belt filter press loosening device for fine coal, which comprises a bottom plate, the upper side of the bottom plate is fixedly connected with a slope, the upper sides of the front and rear ends of the slope are fixedly connected with vertical plates, the upper sides of the vertical plates are provided with dispersing units, and the dispersing units comprise connecting plates. The connecting plate is fixedly connected between the two vertical plates, a lifting block is slidably connected to the outer side of the connecting plate, and a lifting plate is fixedly connected to the upper side of the lifting block. According to the novel belt filter press material loosening device for the fine coal, by arranging the vertical plate, the connecting plate, the lifting block, the lifting plate and the dispersing plate, fine coal materials can be conveniently guided into a feeding hopper of a belt filter press, the dispersing plate is controlled to reciprocate in the up-down direction and the left-right direction through the connecting frame, the rotating wheel, the first rotating plate, the second rotating plate and the control plate, and the fine coal materials can be conveniently dispersed; and the fine coal materials are uniformly distributed in the filter press, so that the filtering effect is improved.

The invention is suitable for the related technical field of green and environment-friendly construction, and provides a road green and environment-friendly engineering construction device and a construction method thereof.The device comprises a dust removal box body, an air inlet is formed in the dust removal box body, dust removal blades are arranged on the air inlet, and an air outlet is formed in the dust removal box body; a plurality of rotating rods which are symmetrically arranged are arranged in the dust removal box body, a dust removal belt is arranged on the rotating rods in a matched mode, a cleaning box body is arranged in the dust removal box body, a power unit used for driving the dust removal belt to move is arranged in the dust removal box body, and a shaking unit used for driving the dust removal belt to shake is arranged in the dust removal box body; the dust removal blades suck external air into the dust removal box body, the dust removal belt filters impurities, the power unit can drive the dust removal belt to move into the cleaning box body for cleaning, and the shaking unit can drive the dust removal belt to shake in the process that the dust removal belt moves into cleaning liquid in the cleaning box body, so that the dust removal effect is improved. And impurities adhered on the glass can be shaken off.

The invention discloses a fine beneficiation method for stage grinding and stage tailing discarding of low-grade chromium ore, which comprises the following steps: first-stage ball-milling grinding, first-stage screening classification, first-stage hydrocyclone classification, second-stage hydrocyclone desliming, spiral chute reselection roughing, spiral chute reselection scavenging and spiral chute reselection concentration. Hydrocyclone security classification, middling concentration, fluidized bed reselection, second-stage pre-screening inspection classification, second-stage ball-milling ore grinding, magnetic separation iron removal, table reselection, spiral chute reselection concentrated concentrate and table reselection concentrate are combined and then fed into a belt filter to be filtered, and the Cr2O3 grade is larger than or equal to 50%, the Cr / Fe ratio is larger than or equal to 2.2, and the moisture lt is obtained; and 12.0% of final qualified chromium concentrate is obtained. According to the method, separation and enrichment of the chromium concentrates with different particle sizes are achieved through step-by-step fine separation of stage grinding, stage tailing discarding and advanced concentrate obtaining, the grade and the recovery rate of the chromium concentrates are remarkably improved, and the method has the advantages of being reliable in technological process, stable in product quality, low in comprehensive energy consumption and the like.

The utility model relates to the technical field of sieving machines, and discloses a grain sieving machine with adjustable sieve pore diameter, which comprises a fixed sieve frame with adjustable angle and capable of vibrating, and further comprises a movable sieve frame, a group of elastic reset pieces are arranged between the fixed sieve frame and the movable sieve frame, two winding rollers are rotatably connected to the inner wall of the movable sieve frame, the two winding rollers are linked through a first chain belt, and a second chain belt is arranged on the inner wall of the movable sieve frame. A first motor for driving the winding rollers to rotate is mounted on the fixed screen frame, a filter belt is wound between the two winding rollers, a group of filter screen areas are arranged on the surface of the filter belt, and filter holes are uniformly distributed in each filter screen area. Through the arrangement of the filter belt and the winding roller, the screening hole diameter of the screening machine can be rapidly adjusted, through the implementation of the reciprocating movement effect of the filter belt in the filtering operation and the matched arrangement of the vibration motor, double vibration of the filter belt in the vertical direction and the horizontal direction is achieved, and then the screening efficiency of the filter belt on grain materials is effectively improved through double vibration.

The invention relates to the technical field of solid-liquid separation, in particular to a filter press and a filter-pressing discharging method. The filter press comprises a rack, a filter pressing unit and a rapping device, wherein the filter pressing unit comprises a water filtering assembly and a filter plate; the filter plate is arranged on the rack in a sliding manner along a first horizontal direction, and a filter chamber can be formed on two opposite sides of the filter plate along the first horizontal direction; the water filtering assembly comprises a lifting frame arranged on the filter plates in a floating manner and a flexible water filtering piece arranged on the lifting frame, and the flexible water filtering piece is arranged between the two adjacent filter plates; the rapping device is arranged on the rack and is configured to lift the water filtering assembly to a specified height and enable the water filtering assembly to do free falling motion after reaching the specified height. According to the filter press and the filter-pressing discharging method provided by the invention, a free falling type falling rapping method is adopted for rapping and discharging, so that the rapping energy is higher, the rapping effect is more sufficient, and the filter press and the filter-pressing discharging method can adapt to the use conditions of most types of filter presses including a bag filter press.

The invention relates to the technical field of waste treatment and solidification, and discloses a fly ash slag and sludge synergistic stabilization treatment method which comprises the following steps: S1, raw material pretreatment: dehydrating fly ash by using a centrifugal dehydrator until the water content is lower than 10%, and treating the fly ash and slag by using a vibrating screen and a jaw crusher until the particle size is 0.5-2 mm; dehydrating the sludge until the water content is lower than 30% by using a belt filter press, and then drying the sludge in a hot air drying furnace until the water content is lower than 10%; s2, raw material mixing: mixing the pretreated fly ash, slag and sludge according to a set mass ratio; s3, adding a curing agent: adding the curing agent into the mixture, and uniformly stirring. By optimizing the proportion and selecting the proper curing agent, the problems of insufficient stability of a cured body and incomplete sealing of harmful substances are solved, and by treating the raw materials, adding the curing agent and optimizing the curing agent, the problems of poor sealing effect of heavy metals and high treatment cost are solved.

The invention discloses a sludge dewatering device and a sludge dewatering system.The sludge dewatering device comprises a sludge dewatering machine, a feeding hopper is arranged at the top of the sludge dewatering machine, a belt filter press is arranged in the sludge dewatering machine, and an anti-stacking assembly is fixedly connected to the right side of the sludge dewatering machine; the anti-stacking assembly comprises a supporting plate, a fixing plate, a motor, a rotating disc, a transmission column, a transmission plate, a connecting rod and a material pushing plate, the supporting plate is fixedly connected to the right side of the sludge dewatering machine, the fixing plate is fixedly connected to the left side of the supporting plate, the motor is fixedly connected to the top of the fixing plate, and the rotating disc is fixedly connected to the output end of the motor. The transmission column is fixedly connected to the top of the rotating disc, and the transmission plate is slidably connected to the surface of the transmission column. According to the sludge dewatering device, the functionality of easily causing sludge accumulation is increased, so that the sludge dewatering device has the function of automatically pushing sludge, the working efficiency of the sludge dewatering device is improved, and the situation of easily causing sludge accumulation is prevented.

The utility model relates to the technical field of belt filters, in particular to a belt filter with an anti-blocking function, and solves the problem that in the prior art, blockage is possibly caused by lack of a dredging device when hoppers in part of existing filters convey materials. In the prior art, a worker needs to manually operate the device to stir and dredge the interior of the hopper, so that time and labor are wasted in the dredging operation step of the worker, the subsequent production efficiency is influenced, and the practicability of the belt filter is reduced. A belt filter with an anti-blocking function comprises a filter body, a mounting box arranged on one side of the top of the filter body, a hopper arranged on one side of the mounting box and a conveying pipe arranged between the mounting box and the hopper, a rotating rod is arranged in the hopper, and a spiral blade is fixedly connected to the outer portion of the rotating rod. The utility model effectively avoids that materials are accumulated in the hopper and cannot be discharged, reduces the operation burden of personnel, and improves the practicability of the belt filter.

The invention introduces a method for preparing artificial rutile by using reduced ilmenite, which comprises the following steps: S1, adding reduced ilmenite into a corrosion tank, introducing oxidizing gas to carry out corrosion reaction, and washing and separating the reaction product through a cyclone and a high-frequency sieve to obtain primary artificial rutile and hydrated iron oxide slurry; s2, carrying out filter pressing on the hydrated iron oxide slurry obtained in the step S1 by using a filter press, and preparing refined iron oxide from the obtained iron oxide slurry; s3, the primary artificial rutile obtained in the step S1 is washed and then subjected to a hydrochloric acid leaching reaction, a mixed material obtained after acid leaching enters a thickener, and supernatant returns to prepare an acid leaching solution; feeding lower-layer ore grains into a belt filter for deacidification and washing; and S4, drying the cleaned primary artificial rutile obtained in the step S3 through a drying cylinder to obtain the finished artificial rutile. Industrial hydrochloric acid is used as a rusting agent, and compared with ammonium chloride, the product Fe (OH) 3 can be separated more easily. Oxidizing gas used for rusting is mixed gas of air and pure oxygen, and the mixing proportion of the air and the pure oxygen can be dynamically adjusted according to different rusting raw materials, so that the reaction condition is in an optimal state. In the corrosion and acid leaching processes, the recycling efficiency of the liquid raw material is extremely high, and the prepared artificial rutile meets the requirements of a chlorination process titanium dioxide raw material. The whole process flow is reasonable in design, simple to operate, free of environmental pollution and easy for industrial production.

The utility model discloses a water circulation system of a chlorinated polyethylene device, and belongs to the technical field of fine chemical engineering. The system comprises a hot water pool and a cold water pool, the output end of the cold water pool is respectively connected with a jacket of a chlorination kettle, a jacket of a material waiting kettle, a drying system and a belt filter, the output end of heating steam is connected with the jacket of the chlorination kettle and the drying system, and the jacket of the chlorination kettle and the output end of the drying system are connected with the hot water pool. According to the utility model, the water resource at the jacket outlet of the chlorination reaction kettle is fully utilized.

The utility model provides a mycoprotein production system which is characterized by comprising a building body on which a steel frame platform is built; the slurry mixing tank is fixed on the building body; the plurality of fermentation tanks are fixed on the building body, and a second conveying pipe is arranged between the slurry mixing tank and the fermentation tanks; the belt filter press is connected with the fermentation tank; the slurry mixing tank, the fermentation tank and the belt filter press are provided with odor collecting pipelines, the building body is further provided with a dosing assembly which is connected with the fermentation tank, and the building body is provided with a tap water assembly connected with the slurry mixing tank.

The utility model discloses a powdery adsorbent lossless recovery device based on a belt filter, which comprises an elevator, the elevator comprises a frame and a conveyor belt circularly running on the frame, the frame and the conveyor belt are arranged on the periphery of the belt filter in a semi-surrounding manner, and the belt filter is arranged on the frame. The device is used for collecting powdery adsorbents from the tail end of the belt filter and returning the powdery adsorbents to the head end of the same belt filter. According to the utility model, the layout of the hoister is improved, so that the hoister is arranged on the periphery of the belt filter in a semi-surrounding manner, the space overlapping degree of the hoister and the belt filter is high, the occupied area is greatly reduced, and the recovery of powdery adsorbents between the tail end and the head end of the same belt filter can be realized.

The invention discloses a thickening and dewatering belt filter press with a conditioning and modifying mechanism, and relates to the technical field of sludge treatment.The thickening and dewatering belt filter press comprises a flocculation conditioning unit, a thickening and dewatering unit, a modification conditioning unit and a squeezing and dewatering unit, and the flocculation conditioning unit, the thickening and dewatering unit, the modification conditioning unit and the squeezing and dewatering unit form a sludge treatment route; the flocculation conditioning unit is used for performing flocculation conditioning on the sludge; the concentration and dehydration unit is used for performing concentration treatment on the sludge; the modification conditioning unit is used for dosing, stirring and conditioning the sludge, and the squeezing and dewatering unit is used for squeezing and dewatering the sludge. The concentration section dosing device is innovatively designed, the sludge dewatering performance is improved, a sludge cake structure with more porosity is formed in the sludge squeezing process, the two opposite pressing rollers are additionally arranged at the squeezing tail end and oppositely extrude with the main pressing roller, moisture in the sludge is further squeezed out, finally, the moisture content of sludge obtained through primary dewatering is greatly reduced, and the sludge dewatering efficiency is improved. The mud cake is high in hardness, low in dryness and small in occupied area.

The invention discloses efficient dust removal equipment, a dust removal method and a clothing production workshop fresh air system, and relates to the technical field of clothing production equipment.The efficient dust removal equipment comprises a belt filtering dust removal unit, a knocking unit and a reciprocating motion unit, and the knocking unit and the belt filtering dust removal unit are both connected with the reciprocating motion unit; the reciprocating motion unit is used for enabling the belt filtering dust removal unit to reciprocate on the conveying belt and enabling the knocking unit to knock clothes on the conveying belt; and the dust removal unit with the filter is used for removing dust and fluff of the air holes. The device is reasonable in structure, reciprocating movement of the belt filtering dust removal unit and the knocking unit on the conveying belt is achieved, clothes on the conveying belt are continuously knocked, dust and fluff generated in the knocking process are collected and treated by the belt filtering dust removal unit, the dust removal range is widened, the dust removal effect and the dust removal efficiency are further improved, and the practicability is high. And dust and fluff are filtered and separated, so that the dust removal equipment is prevented from being blocked for a long time.

The utility model discloses belt type sludge filter pressing equipment for a water regeneration plant, which is characterized in that a driving roller A and a driving roller B are respectively and rotatably connected to the right end of a rack and are driven by a driving motor, a tensioning roller A and a tensioning roller B are respectively and rotatably connected to the left end of the rack, the tensioning roller B is positioned on the left side of the tensioning roller A, a deviation rectifying roller A is arranged above the tensioning roller A, and a deviation rectifying roller B is arranged below the deviation rectifying roller A; a deviation rectifying roller B is arranged obliquely below the tensioning roller B. A plurality of press rollers A are arranged between the tensioning roller A and the driving roller A. The upper filter belt is sequentially wound around the driving roller A, the press rollers A, the tensioning roller A and the deviation rectifying roller A. The lower filter belt is sequentially wound around the driving roller B, the press rollers A, the tensioning roller B and the deviation rectifying roller B. The feeding hopper is located above the lower filter belt wound around the tensioning roller B. At least one screw shaft is rotationally connected in the feeding hopper in a chaining mode, the water collecting tank is located under the deviation rectifying roller B, and the multiple pressing rollers A are distributed in a broken line shape in a staggered mode. The filter press is low in manufacturing cost, high in filter pressing efficiency, long in service life, high in operation stability and easy and convenient to maintain.

To provide a running control device for a filter fabric, which can sense an abnormality of a running state of a filter fabric that cannot be sensed by a conventional meander sensing device.SOLUTION: A running control device for a filter fabric 13 in a belt filter comprises sensing means 20 for sensing that a length in a width direction of the filter fabric 13 in a running state becomes shorter than a length in a normal state thereof. The sensing means 20 are arranged laterally at one side or at both sides in the width direction of the filter fabric 13, which comprise contact members 21 that turn toward the width direction of the filter fabric 13 with a predetermined turning shaft as a fulcrum and sensors 22 for sensing the turning of the contact members 21. The contact members 21 are configured to contact side edges of the filter fabric 13 to incline in a normal range with the turning shaft as the fulcrum, when the filter fabric 13 is in the normal state.SELECTED DRAWING: Figure 2

The present application relates to waste treatment and solidification technical field, disclose a kind of fly ash slag and sludge collaborative solidification treatment method, comprising the following steps: S1, raw material pretreatment: using centrifugal dehydrator fly ash is dewatered to moisture content is less than 10%, and by vibrating screen and jaw crusher fly ash and slag are treated to particle size is between 0.5-2 mm;Using belt filter press sludge is dewatered to moisture content is less than 30%, then in hot air drying furnace it is dried to moisture content is less than 10%;S2, raw material mixing: after pretreatment fly ash, slag and sludge are mixed according to set mass ratio;S3, add solidification agent: solidification agent is added to mixture, and is uniformly stirred.By optimizing proportioning and selecting suitable solidification agent, the problem of insufficient stability of solidified body and incomplete sealing of harmful substances is solved, and by raw material treatment, adding solidification agent and solidification agent optimization, the problem of poor heavy metal sealing effect and high processing cost is solved.

The utility model discloses an ore pulp filtering device with an anti-blocking function, which comprises a belt filter, a motor and an elastic buckle are fixedly arranged at the lower part of the belt filter, a cylindrical brush is arranged between the motor and the elastic buckle, one end of the cylindrical brush is clamped with the motor, the other end of the cylindrical brush is buckled with the elastic buckle, and the cylindrical brush is movably contacted with a filter belt of the belt filter. A scraping plate is fixedly connected to a rack of the belt filter, and the scraping plate is in movable contact with a filter belt of the belt filter. The motor comprises a motor body, a first rotating disc is fixedly connected to a rotor of the motor body, a first hemispherical block is fixedly connected to the outside of the first rotating disc, the motor drives the cylindrical brush to rotate so that the cylindrical brush can wash along a filter belt of the belt filter, and the belt filter rotates so that the cylindrical brush can circularly wash the belt filter; by keeping the surface of the belt filter clean, the possibility of blockage of the filter belt of the belt filter is reduced.

The utility model discloses a hot air filtration-aided dehydration device of a belt filter, belongs to mechanical equipment, and relates to a solid-liquid separation device. The utility model relates to a hot air filtration-aided dehydration device of a belt filter, which comprises an air feeder, a heater, belt filter filter cloth, a material loosening device, a lifting and moving mechanism and a hot air distribution cover, the air feeder is connected with the heater through a pipeline, the heater is communicated with the hot air distribution cover through a hot air pipeline, the hot air distribution cover is arranged on the lifting and moving mechanism, the lifting and moving mechanism is arranged on the filter cloth of the belt filter, and the material loosening device is arranged at the upper part of the filter cloth of the belt filter. By repeatedly loosening materials and controlling hot air distribution, energy consumption can be reduced, productivity can be improved, and product granularity can be protected.

A double-layer cloth vertical belt filter press comprises a rack unit, a filter pressing unit, a driving unit and a scraping device, the filter pressing unit comprises a hydraulic system, a bottom pressure bearing platform, a top pressure applying platform, an oil cylinder, a lower layer filter belt, an upper layer filter belt and a middle layer filter belt, and the bottom pressure bearing platform is fixed on the rack unit; a cylinder end flange of the oil cylinder is connected to a top cross beam of the bottom pressure-bearing platform, a rod end flange of the oil cylinder is connected to the upper surface of the top pressure-applying platform, the lower-layer filter belt, the upper-layer filter belt and the middle-layer filter belt are arranged between the bottom pressure-bearing platform and the top pressure-applying platform, the cloth is divided into upper-layer cloth and bottom-layer cloth, the upper-layer cloth is located between the middle-layer filter belt and the upper-layer filter belt, and the lower-layer cloth is located between the bottom-layer cloth and the middle-layer filter belt. The bottom-layer cloth is positioned between the lower-layer filter belt and the middle-layer filter belt; according to the utility model, a plurality of groups of oil cylinders are added to apply pressure, the dehydration pressure and the pressure maintaining time can be accurately controlled so as to achieve an expected effect, and the oil cylinders vertically apply pressure to the filter belt, so that tearing and stretching force cannot be generated on the filter belt.

The invention provides a flushing water saving device for a belt filter press. The washing water saving device for the belt filter press comprises a cleaning box, a rolling brush assembly and a vibration assembly, and a first brush roller and a second brush roller are in clearance fit to enable a filter belt to be cleaned to penetrate through the gap between the first brush roller and the second brush roller, so that the upper surface and the lower surface of the filter belt are brushed when the first brush roller and the second brush roller rotate. And the vibration assembly can drive the first brush roller and the second brush roller to reciprocate when the first brush roller and the second brush roller rotate, so that the first brush roller and the second brush roller generate a vibration effect in the vertical direction. The first brush roller and the second brush roller are used for vibrating the filter belt clamped by the filter belt in the vertical direction, so that slurry on the surface of the filter belt or material particles clamped in meshes can be vibrated and separated. Therefore, through the arrangement of the vibration assembly, the cleaning effect and cleaning efficiency of the first brush roller and the second brush roller on the filter belt can be greatly improved.

The invention discloses a processing system and method for discharging alkali liquor from sodium carbonate, and belongs to the technical field of chemical engineering, the processing system for discharging alkali liquor from sodium carbonate comprises a distributing device and a conveying mechanism which are sequentially connected, and a washing water circulating system, a belt filter and a medium wave infrared device are sequentially arranged in the direction of conveying alkali liquor from sodium carbonate by the conveying mechanism; the washing water circulation system comprises a first-section washing water mechanism, a second-section washing water mechanism and a third-section washing water mechanism which are sequentially arranged, then third-section washing water treatment, belt filter treatment and medium-wave infrared treatment are sequentially carried out on the soda outlet liquor, the third-section washing water is additionally arranged through gradient heat exchange utilization of desalted water, and a third-section washing water circulation system is constructed. According to the present invention, with the combination of the filter aid compounding and the medium-wave infrared radiation reinforced dehydration, the filtration condition is optimized from the source, such that the purposes of filter cake moisture reducing, filtration pressure difference reducing, equipment scaling relieving and washing efficiency improving are achieved so as to reduce the calcination energy consumption, improve the product purity, prolong the equipment operation period and reduce the maintenance cost;

The utility model discloses a tension adjusting device for filter cloth of a belt filter, which comprises a filter component, and the filter component comprises a support, a belt filter body and an adjusting component. The two adjusting assemblies are installed on the two sides of the belt filter body respectively. The adjusting assembly comprises a fixing plate, a mounting block, an adjusting block, an adjusting roller and a tensioning device; the bottom end of the fixing plate is located at the bottom end in the support, and the upper end is connected with one end of the tensioning device. The other end of the tensioning device is connected with the adjusting block; one side of the lower end of the adjusting block is connected with the adjusting roller; the mounting block is positioned on the middle supporting side wall of the bracket; the adjusting roller is connected with filter cloth of the belt filter body; the adjusting roller on the adjusting block is controlled by the tensioning device to rotate relative to the mounting block, so that the tensioning degree of the filter cloth is adjusted, the phenomena of slipping, deviation, cloth pulling and the like caused by over-tightness or over-looseness of the filter cloth are avoided, and the filtering effect and the impurity removal efficiency of a solution are improved.

The invention belongs to the technical field of electrolytic aluminum ash treatment, and discloses an electrolytic aluminum ash harmless treatment device which comprises a raw material preparation reaction system and an ore pulp treatment system, and the raw material preparation reaction system comprises a semi-finished product ash bin, a first calcium chloride tank, a raw material saline water tank, a batching tank and a reaction tank; the ore pulp treatment system comprises a vacuum belt filter, a light salt brine tank, a second calcium chloride tank, a strong salt brine tank, an alkali liquor tank, a sediment slurry tank, an air compressor and an MVR evaporator. According to the method, soluble calcium salt is obtained by utilizing the fly ash and diluted hydrochloric acid, calcium chloride reacts with fluoride in the electrolytic aluminum ash to obtain calcium fluoride sediment, most fluorine is removed, the phenomena of corrosion and scaling blockage of an MVR pipeline are greatly reduced, the service life of equipment is prolonged, meanwhile, the salt content is increased through light salt brine circulation enrichment, and the MVR energy consumption is reduced.

The application discloses a belt filter press deviation rectifying device and method, and belongs to the technical field of auxiliary equipment of belt filter press.The device comprises a rack, a deviation rectifying roller, a detection rod, a proportional valve, a control rod, a displacement conversion assembly and a deviation rectifying cylinder, and each component is installed on the rack; the detection end of the detection rod is attached to the edge of the filter belt, and converts the filter belt deviation into the displacement of the detection rod; the displacement conversion assembly connects the detection rod and the control rod, and realizes accurate displacement transmission; the proportional valve is matched with a tapered valve core through a V-shaped throttling groove, realizes linear regulation of the air inlet flow, drives the deviation rectifying cylinder to extend and retract, and adjusts the roller seat of the deviation rectifying roller.The deviation rectifying method comprises pre-tightening detection, displacement conversion, deviation rectifying action and reset emergency steps, realizes self-adaptive deviation rectifying of the filter belt "small deviation slow rectification and large deviation fast rectification", and can accurately capture slight deviation, avoids secondary deviation of the filter belt, is stable in operation, has high universality, and can guarantee continuous operation of the belt filter press.

The utility model discloses a belt filter with a scraping structure, which belongs to the field of belt filters and comprises a conveying frame, a roller is arranged on the inner side of the conveying frame, and filter cloth is sleeved on the roller. Through the arranged quantitative structure, a servo motor and a lead screw are adopted to drive a transverse plate and a lifting block to move, the height of a quantitative plate can be adjusted, the use flexibility and adaptability are improved, a scraping structure is adopted, a scraping plate is mounted on a first moving frame and a second moving frame through a mounting base and a rotating shaft, and the scraping plate is used in cooperation with a translation electric push rod; the horizontal position of the scraping plate can be adjusted, the angle adjusting assembly connected with the rotating shaft is arranged on the first moving frame, the angles of the rotating shaft, the mounting base and the scraping plate can be adjusted, the flexibility and adaptability of the scraping plate in use are improved, a gear and a rack are adopted for transmission, and an angle adjusting electric push rod is matched for use; the device can be adjusted at will within the adjusting range, and stability after adjustment is guaranteed.