111 results about "Bar screen" patented technology

The invention provides an intelligent sorting system and method for construction waste, and belongs to the technical field of construction waste sorting. The system comprises a feeding machine, a spiral screen, a first conveying belt, a second conveying belt, a third conveying belt, an inclined sorting conveying belt, an electromagnetic iron remover, a bouncing screen, a fourth conveying belt, a fifth conveying belt, a bar screen, a sixth conveying belt, a seventh conveying belt, an eighth conveying belt, a flip-flow screen, a ninth conveying belt, a tenth conveying belt, a magnetic substance collecting area, a light substance collecting area, a visual auxiliary sorting room and a crushing transfer area. A finished product collecting area and a control device; according to the construction waste sorting system, through combination of multi-stage screening and intelligent sorting, efficient and accurate sorting of construction waste is achieved, it is guaranteed that the purity of concrete and tiles entering the crusher is high, the sorting efficiency is remarkably improved, and the labor cost is reduced.

The invention relates to the technical field of sewage treatment, in particular to a novel grillage machine for sewage treatment, which comprises an obliquely arranged grillage plate, the grillage plate is connected to a sundry lifting unit, the inclination angle of the grillage plate is 30-60 degrees, the lower ends of the grillage plate and the sundry lifting unit are inserted into a sewage channel, and the lower ends of the grillage plate and the sundry lifting unit are connected with the sewage channel. A sundry collecting unit is arranged below the upper end of the sundry lifting unit, and an extruding and dewatering unit for compressing and dewatering the sundry is arranged below the sundry collecting unit. Floating sundry in sewage can be cleaned, compression and dewatering can be performed, subsequent transportation and treatment are facilitated, and the sewage treatment efficiency is improved. Wide application prospects are realized in the field of sewage treatment.

The utility model discloses a rotary drum type bar screen machine with high separation efficiency, and relates to the technical field of rotary drum type bar screen machines. The device comprises a supporting assembly which comprises a mounting plate, a first fixing block fixed to the mounting plate and a first mounting disc fixed to a first connecting frame; the unblocking assembly is arranged on the supporting assembly; the unblocking assembly comprises a second inserting plate inserted into the first fixing block and a brush fixed to the long plate; and; the grating assembly is arranged in the supporting assembly; the grating assembly comprises a circular ring inserted into the second mounting disc, a spring fixed to the disc, a circular block fixed to the spring, a grating basket fixed to the circular block, a spring fixed to the circular block and the disc fixed to the spring, and the circular ring is inserted into the first mounting disc. By arranging the unblocking assembly and the grating assembly, the problems that the grating basket is blocked after being used for a long time, meanwhile, the grating basket is fixedly installed, grating baskets with different sizes of screen holes cannot be replaced according to needs, and the separation efficiency is reduced are solved.

The utility model relates to the technical field of hydraulic engineering, in particular to water quality purification equipment for hydraulic engineering. Comprising a pretreatment assembly, a grating assembly, a purification assembly, a sand filtering assembly and a filtering assembly, the pretreatment assembly comprises a pretreatment box, the grating assembly comprises a grating plate and a sealing plate, the purification assembly comprises a purification box, a backflushing pipe, a water inlet pipe and a first water pump, and the sand filtering assembly comprises a flow guide plate and a sand filtering layer. The filtering assembly comprises a filtering box and a second water pump, the lower end of a back-flushing pipe is connected with a back-flushing spray head, a sand filtering layer is filled with quartz sand, and a filtering layer is arranged on the inner side of the filtering box. After water flows into the purification box from the first water conveying pipe, the water is blocked by the flow guide plate in the falling process of the purification box, then the water continuously falls through the flow guide groove, when the water passes through the quartz sand, suspended solids and colloids are intercepted and adsorbed, and then the suspended solids and the colloids in the water are removed through the sand filtering layer.

This invention relates to a biological-ecological synergistic purification system for road runoff pollutants in municipal roads, belonging to the field of municipal road rainwater treatment technology. With the acceleration of urbanization, the pollution of natural water bodies by road runoff pollutants is becoming increasingly serious. This biological-ecological synergistic purification system uses a bar screen to intercept large particles and sludge, a biofilm reactor to degrade pollutants using a combined packing layer, an ecological filter to further purify the water using multi-layered filter media and plants, and an ultraviolet disinfection device to kill pathogens. Finally, the purified water is discharged into natural water bodies. It is mainly used to effectively purify road runoff pollutants in municipal roads and protect the natural aquatic environment.

This invention relates to a rotary drum bar screen cleaner, comprising an annular screen frame, a rotating shaft, a slag discharge device, a spiral conveyor, a slag removal device, and a power unit; the slag discharge device includes a connecting cylinder and a filter hopper fixedly connected to the connecting cylinder, the connecting cylinder having a slag outlet, and the filter hopper having a slag inlet, the inner cavity of the connecting cylinder communicating with the inner cavity of the filter hopper, the filter hopper being located within the inner cavity of the annular screen frame; the annular screen frame has a fixed connecting section and a rotating connecting section at each end, the fixed connecting section being fixedly connected to the rotating shaft. The rotating connecting section is rotatably connected to the connecting cylinder; the rotating shaft passes through the inner cavity of the connecting cylinder and the inner cavity of the filter ash hopper, and extends out of the inner cavity of the annular grid frame; the spiral conveyor is set on the rotating shaft, with one end of the spiral conveyor located at the ash outlet and the other end located at the ash inlet; the ash removal device includes a ash removal brush and a connecting piece, the ash removal brush is located at the top of the annular grid frame and abuts against the annular grid frame, one end of the connecting piece is connected to the ash removal brush, and the other end is fixedly connected to the ash outlet device; the power device is drivenly connected to the rotating shaft.

The utility model relates to the technical field of ultra-narrow light bar screens, in particular to an ultra-narrow light bar screen adjustable packaging shell which comprises a packaging shell female body, two symmetrical sliding grooves are formed in the top end and the bottom end of the packaging shell female body, a packaging shell male body is inserted into the packaging shell female body in a sliding mode, and the packaging shell male body comprises two symmetrical inserting strips. A plurality of positioning grooves are formed in the two inserting strips, and positioning devices are vertically inserted into the positioning grooves. According to the utility model, the insertion strip moves in the chute, so that the packaging shell male body moves in the packaging shell female body, and the size of the packaging shell can be changed according to light bars with different sizes, thereby perfectly adapting to the light bars and facilitating installation and use.

This invention discloses a raw waste sorting system and method for the coastal areas of West Africa, comprising: raw waste being transported by a loader or grab bucket to a chain conveyor loading section, and then entering a bar screen sorting section to obtain a first oversize and a first undersize; the first undersize sequentially entering a manual sorting section and a drum screen sorting section to obtain a second oversize and a second undersize; the second undersize, after iron removal, entering a tension screen sorting section to obtain a third oversize and a third undersize; and the second oversize entering a pneumatic sorting section to separate inorganic aggregates and lightweight materials. Addressing the characteristics of raw waste in the coastal areas of West Africa—high sand content, low moisture content, and a large amount of recyclables—this invention employs a multi-stage physical sorting method to effectively separate various resources from the raw waste, solving the problems of low efficiency and significant safety hazards associated with the local extensive manual sorting method.

The utility model relates to the technical field of electronic display, and discloses an LED (light-emitting diode) light bar screen convenient to maintain, which comprises an aluminum substrate, a plurality of lamp beads are welded at the top of the aluminum substrate, the side edge of the aluminum substrate is electrically fused and connected with a lead, the bottom of the aluminum substrate is fixedly connected with a support plate, one side of the support plate is fixedly connected with a side plate, and the side plate is fixedly connected with the LED light bar screen. And the other side of the aluminum substrate is fixedly connected with a side frame, the top of the side frame is movably connected with a movable rod in a penetrating mode, the top end of the movable rod is fixedly connected with a pressing plate, and the surface of the movable rod is sleeved with a first spring. According to the utility model, a plurality of groups of inclined blocks are arranged to extrude the trapezoidal block downwards, so that the two clamping blocks are close to each other or far away from each other, and when wires are arranged, the wires sequentially pass through the gaps between the insulating blocks, and the insulating blocks are used for limiting and insulating the wires in cooperation with the transverse elastic potential energy of the second spring; and the wires can be conveniently arranged and unwound at the same time.

The utility model discloses a novel reverse fishing formula grating cleaner grating strip cleaning device, including water tank, install support frame on the water tank, support frame is provided with the support component that supports grating, the top of support frame is installed with support, install rotating sprinkling mechanism on the support, and the rotating sprinkling mechanism realizes the spray of grating on the support component. The utility model discloses a rotating sprinkling mechanism is set up to the spray of grating, makes the cleaning of grating more sufficient, clean, has improved the cleaning efficiency of grating grating strip of grating, through setting up water tank, and setting up filter screen in water tank, and the sundries of washing are fallen on filter screen, and water continues to enter water tank, makes water can be recycled, has saved water resource, and the sundries can be unloaded simultaneously with filter screen taking out, makes the collection of sundries more easy.

The bar screen for the vibrating screen comprises a main frame, mounting plates are fixed to the left end and the right end of the outer wall of the main frame, limiting columns are vertically embedded into the front end, the rear end, the left end and the right end of the interior of the main frame, inner sliding blocks are embedded into the middles of the limiting columns, and return springs are embedded into the upper ends and the lower ends of the outer sides of the limiting columns. Supporting plates are fixed to the ends, close to the middle of the main frame, of the limiting columns, bar columns are embedded into the main frame, fixing plates are embedded into the front, rear, left and right ends of the upper portion of the inner wall of the main frame, limiting plates are fixed to the bottoms of the fixing plates, and limiting bolts are vertically embedded into the middles of the fixing plates. When the bar screen is installed on a vibrating screen, the vibration amplitude is larger, materials can rapidly move and roll over on the surface of the bar screen, the speed of passing through screen holes is increased, then the screening efficiency of the materials is improved, meanwhile, the bar columns can be rapidly replaced and overhauled, and use is more convenient.

According to the technical scheme, the novel rake tooth type bar screen machine comprises a sewage pool, the end of the sewage pool is fixedly communicated with a water inlet, a sewage opening is formed in the top end of the sewage pool, the novel rake tooth type bar screen machine further comprises a decontamination assembly used for treating sewage in the sewage pool, a movable rake tooth assembly is arranged on the decontamination assembly, and the decontamination assembly comprises a machine frame. The rack is obliquely fixed on the sewage pool and penetrates through the sewage port, the bottom end of the rack abuts against the bottom of the inner wall of the sewage pool, and the top end of the rack is fixed on the top of the sewage pool. The utility model has the beneficial effects that the device has the functions of intercepting solid sundries and then conveying and moving out the sundries through the rotary rake teeth, and also has the function of clamping fixed sundries moved out of the sewage surface through the arranged movable rake teeth, so that the solid sundries are effectively prevented from falling off again in the conveying and moving-out process, and the service life of the device is prolonged. The decontamination effect is facilitated.

This invention discloses a treatment device and method for brewing wastewater. The treatment device includes: a bar screen, a sedimentation tank, an equalization tank, a coagulation sedimentation tank, a first intermediate water tank, an anaerobic reactor, a second intermediate water tank, a pure membrane aerobic biofilm coupled granular sludge reactor, a third intermediate water tank, and an ozone oxidation tank. The pure membrane aerobic biofilm coupled granular sludge reactor is equipped with a pure membrane moving bed biofilm reaction zone, a water and gas distribution zone, and a granular sludge reaction zone. The granular sludge reaction zone is further divided into an aerobic granular sludge reaction zone and an anaerobic granular sludge reaction zone. The physical space of the aerobic and anaerobic granular sludge reaction zones is controlled by a reaction zone space control unit. This invention can simultaneously perform aerobic and anaerobic biological treatment of wastewater and can flexibly control the physical space of the sludge reaction zone, greatly shortening the biological treatment process of brewing wastewater and significantly improving the reactor's adaptability to changes in wastewater characteristics, thereby enhancing the wastewater treatment effect.

The application discloses an underwater movable auxiliary fence automatic resetting method for a rotary reverse dredging type bar screen, and an underwater movable auxiliary fence automatic resetting device thereof. The underwater movable auxiliary fence automatic resetting device comprises a front baffle fixed below a main body of the bar screen and an underwater movable auxiliary fence rotationally connected with the front baffle. The upper end of the front baffle is provided with a connecting plate, and the lower end of the underwater movable auxiliary fence is provided with a square tube which is rotationally connected with the connecting plate. When the underwater movable auxiliary fence is not subjected to the force of the rake tooth moving on the main body of the bar screen, the square tube abuts against the connecting plate, and the connecting plate limits the square tube. A limiting plate is fixedly connected to the front baffle and limits the rotation of the square tube. When the underwater movable auxiliary fence abuts against the limiting plate, the side of the underwater movable auxiliary fence close to the connecting plate is inclined, so that the rotation angle of the underwater movable auxiliary fence is prevented from being too large, and meanwhile, the underwater movable auxiliary fence close to the connecting plate can be automatically reset by the torque provided by its own gravity.

This utility model relates to a bar screen for wastewater treatment, belonging to the field of wastewater treatment technology. It includes a machine body with a bar screen assembly inside and a drive assembly for rotating the bar screen assembly on the outside. The machine body includes wastewater inlet pipes and outlet pipes on both sides. The middle part of the machine body is a circular tubular structure connected to the inlet and outlet pipes on both sides respectively. A fan-shaped intercepting net is fixed to the outlet side of the circular tubular structure connected to the outlet pipe. This wastewater treatment bar screen, driven by a motor, continuously collects impurities from the wastewater as the rotating drum and intercepting bar rotate. During rotation, the impurities are buoyed and sent into the inside of the collecting drum. Simultaneously, the rotating rod drives the spiral blades to continuously push the impurities stored inside the collecting drum towards one side of the discharge drum. The impurities entering the discharge drum float to the outlet position of the discharge drum due to buoyancy, thus achieving rapid discharge.

The utility model relates to the technical field of bar screen cleaning machines, in particular to a reverse fishing type bar screen cleaning machine which comprises a machine shell, the machine shell is arranged in an inverted L shape, a sewage discharging plate is fixedly connected to the position, close to the top, of the inner side of the machine shell, a collecting rake is arranged in the machine shell, and a collecting box is arranged at the position, close to the bottom, of the inner side of the machine shell. The water collecting device has the advantages that the sealing plate is pulled open, the collecting rake rotates reversely to fish sediments into the collecting box, after most sediments are fished, the sealing plate can be inserted into the inserting groove, and the grip is moved and pulled to slide along the sliding groove, so that water is discharged along the liquid outlet; at the moment, the sealing cover is taken down from the outside of the drainage pipe, water in the collecting box can be drained, the other part of water can be pumped out from one side of the machine shell, the effect of reversely fishing and collecting impurities is achieved, the problem that sediments are inconvenient to clean due to previous one-way fishing is solved, and the filtering effect is improved.

The utility model discloses industrial wastewater filtering equipment and belongs to the field of filtering equipment. The device comprises a filter tank, a grating mechanism, a waste box, a longitudinal compression mechanism and a transverse compression mechanism. The grating mechanism is arranged in the filter tank and is used for conveying waste materials in the wastewater. The waste box is fixedly arranged at the upper end of the filter tank and below a discharge hole of the grating mechanism and is used for collecting waste. The longitudinal compression mechanism is arranged in the filter tank and is used for extruding the waste materials from the upper side and the lower side; the longitudinal compression mechanism comprises a driving part; an upper pressing plate is arranged on the driving piece; the upper pressing plate is driven by a driving part to move up and down; and a lower pressing plate fixedly connected to the bottom of the filter tank is arranged under the upper pressing plate. Through mutual cooperation of the vertical compression mechanism and the transverse compression mechanism, waste materials can be extruded in the transverse direction and the longitudinal direction respectively, the waste materials are made to be in a compact long strip shape, accumulation and winding of the loose waste materials on a chain belt are reduced, and the risk that the chain belt is blocked is reduced.

The utility model discloses a chain slag-scraping type mechanical bar screen machine, which relates to the field of sewage treatment equipment and comprises a fixed grid bar, a chain slag-scraping type mechanical bar screen machine and a chain slag-scraping type mechanical bar screen machine, the chain slag scraping structure is arranged on the upstream face of the fixed grid bar, the chain slag scraping structure comprises a rotatable working chain and a plurality of slag scraping tooth rake assemblies, the slag scraping tooth rake assemblies are evenly arranged on the periphery of the working chain, the slag scraping tooth rake assemblies are matched with guide rail grooves of the working chain, and a tensioning wheel is further arranged in the working chain; the driving structure is connected with the working chain, and in the rotating process of the working chain, when the working chain rotates to be close to one side of the fixed grid bar, the working chain moves upwards; the slag scraping tooth rake assembly is matched with the gaps of the fixed grid bars; according to the cleaner, the problem of secondary pollution can be avoided, pollutants intercepted on the fixed grid bars can be discharged to the bank of a sewage pool, the water passing effect of the fixed grid bars is improved, and the problem of water blocking is avoided.

This utility model relates to the field of bar screen technology, and provides a bar screen adjustment component for a bar screen machine, including a main body and a sliding groove; the sliding groove is evenly provided on one side of the main body, and an adjustment structure is provided inside the sliding groove. By providing the adjustment structure, the bar screen plates are slidably connected inside a first sliding shaft and a second sliding shaft, while the limiting grooves are evenly distributed on one side of the main body. This facilitates the placement of the protrusions at the top of the bar screen plates into the limiting grooves at different positions. The positioning plate is rotated to one side of the main body and positioned by fastening bolts, thus fixing the position of the bar screen plates and achieving convenient and quick adjustment of the bar screen spacing.

The invention belongs to the technical field of sewage treatment, and particularly discloses a grid slag removal system for removing a small amount of slag, the grid slag removal system comprises an outward transport vehicle, a slag remover and a slag removal chamber, the slag remover is located in the slag removal chamber, the top of the slag removal chamber is communicated with a water inlet pipe, and the bottom of the slag removal chamber is communicated with a water outlet pipe; the top end of the slag remover is an open end, and the open end of the slag remover is arranged opposite to the water inlet pipe; a filter plate is arranged at the bottom of the slag remover, and liquid entering the slag remover can flow out through the filter plate and is discharged through the water outlet pipe; and the outward transport vehicle is detachably matched with the slag remover. The device can meet the requirement for intercepting a small amount of fine dregs.

This utility model provides a bar screen cleaning device, including a water tank and an arc-shaped bar screen. The arc-shaped bar screen is disposed in the water tank. A frame is provided on the top surface of the water tank. A rotating shaft is rotatably mounted in the middle of the frame, with one end of the shaft driving a first motor. A rotating cylinder is fitted on the rotating shaft. Multiple scrapers are provided on the outer side of the rotating cylinder. The scraper ends are provided with serrations that abut against the arc-shaped bar screen. A moving mechanism is slidably mounted on the top surface of the water tank. A U-shaped frame is rotatably mounted on the side of the moving mechanism. A second rotating shaft is rotatably mounted in the middle of the U-shaped frame. One end of the second rotating shaft is rotatably connected to the U-shaped frame, and the other end passes through the U-shaped frame and drives a second motor. The second motor is located on the side of the U-shaped frame. A cylinder is provided on the second rotating shaft. A hook is provided on the side of the cylinder, with the end of the hook abutting against the outer side of the rotating cylinder. This utility model uses a cylinder. The rotation of the cylinder drives the hook, which can clean fibrous debris on the scrapers from both longitudinal and transverse directions, improving the cleaning effect and preventing the arc-shaped bar screen from clogging.

The utility model relates to a cut tobacco workshop cut stem air separation equipment technical field discloses a kind of air separation equipment export cut stem collection device, including the loose bin and air separation bin of intercommunication, the loose bin is equipped with the feed inlet for being interconnected with the air separation equipment export, several harrow nail rollers are arranged in parallel interval in the loose bin, the bottom of the loose bin is equipped with deflector plate;The deflector plate one end is rotatably connected in the inner wall of the loose bin, and the other end extends to air separation bin by downwardly inclined and perforated;Vibration bar screen is equipped between the harrow nail roller and the deflector plate, the export side of the vibration bar screen is close to the input end top of the deflector plate;Air separation bin upper portion is equipped with tobacco outlet for being interconnected with upper suction duct, and air separation bin lower portion is equipped with cut stem outlet for being interconnected with lower suction duct.Solve the problem that cut stem after air separation in prior art has residual tobacco, thereby causing waste.

The utility model provides a grillage machine for sewage treatment, and relates to the technical field of grillage machines, the grillage machine comprises a sewage pool, the outer wall of the sewage pool is fixedly connected with a support frame I, the inner side of the support frame I is fixedly connected with a motor I, the output end of the motor I is fixedly connected with a support rod I, and the output end of the support rod I is fixedly connected with a motor II. First gears are symmetrically and fixedly connected to the outer wall of the first supporting rod, and a second supporting rod is rotationally connected to the inner wall of the sewage pool; compared with the prior art, the grillage machine has the advantages that a second rake tooth structure is additionally arranged on the grillage machine for sewage treatment, so that the function of adjusting the distance between the rake teeth is realized, the aim of conveniently adjusting according to actual requirements is fulfilled, and the grillage machine is convenient to use; when the grillage machine for sewage treatment is used, water in garbage returns to the sewage pool through the cooperation of the water outlet I and the water outlet II, so that the wet garbage is prevented from easily generating peculiar smell when the temperature is relatively high, meanwhile, manual cleaning by a worker is not needed, and the cleaning process is relatively rapid.

The utility model relates to a deep purification treatment system for degradation-resistant organic matter wastewater, which comprises a pretreatment unit, a persulfate advanced oxidation unit, a biological treatment unit, a membrane separation deep purification treatment unit, a disinfection tank and a sludge treatment unit, and is characterized in that the pretreatment unit comprises a bar screen machine, a rotational flow grit chamber and a pH (Potential of Hydrogen) regulating tank; the persulfate advanced oxidation unit comprises a persulfate advanced oxidation reactor, a persulfate adding device and a catalyst adding device, the biological treatment unit comprises an anaerobic tank, an anoxic MBBR (Moving Bed Biofilm Reactor) tank, an aerobic MBBR tank and a secondary sedimentation tank, and the membrane separation deep purification treatment unit comprises a coagulative precipitation tank, an intermediate water tank, an ultrafiltration module and a reverse osmosis module. According to the utility model, the traditional biological treatment process is combined with physical and chemical treatment technologies such as persulfate advanced oxidation and membrane separation, so that the treatment efficiency of refractory organic wastewater can be effectively improved, the quality of effluent is improved, and the industrial recycling requirement is met.

The utility model provides reverse fishing type grating decontamination equipment, which belongs to the field of grating decontamination and comprises a decontamination machine body, rack guard plates are arranged on two sides of the decontamination machine body, an adjusting mechanism is arranged between the tops of the rack guard plates, and driving components are arranged on the outer sides of the rack guard plates. The cleaning roller is driven to move under the work of the electric push cylinder through the arranged adjusting mechanism, if the cleaning roller needs to be far away from the surface of the cleaner body, the electric push cylinder extends outwards for a certain distance to push the cleaning roller to move upwards for a certain distance in the adjusting groove, and if the cleaning roller needs to be close to the surface of the cleaner body, the cleaning roller is driven to move upwards for a certain distance. Only the electric push cylinder is required to contract, and the cleaning roller is pulled downwards; in this way, when the cleaning roller cleans the surface of the cleaner body, the position can be conveniently adjusted so as to meet different cleaning requirements and clean attached garbage of different sizes.

The invention discloses a sand making method of glass raw material quartz sand, and relates to the technical field of glass raw material treatment.The sand making method comprises the steps that sand making raw materials to be sorted are placed on a double-layer fixed bar screen to be screened, an oversize material set and a first undersize material are obtained, and the first undersize material is discharged to a linear vibrating screen to be screened; discharging the second undersize material to a first hindered settler for settling operation to obtain a first underflow sand returning material and a first overflow sand material, and discharging the first underflow sand returning material to a second hindered settler for settling operation to obtain a second underflow sand returning material; discharging the first underflow sand returning material to a second hindered settler for settling and grading operation to obtain a second underflow sand returning material and a second overflow sand material, and performing screening and grading operation on the first overflow sand material and the second overflow sand material by using a drum screen to obtain a third undersize material and a second oversize material; and the third undersize material is discharged to a third hindered settler to be subjected to overflow separation operation, overflow fine sand and underflow return sand serving as qualified sand are obtained, and the impurity content is prevented from being increased.

The utility model relates to the technical field of anti-blocking rotary mechanical grilles, in particular to an anti-blocking rotary mechanical grille which comprises a water filtering pool, the left side face and the right side face of the inner wall of the water filtering pool are fixedly connected with the left side face and the right side face of a partition plate respectively, and a rotary mechanical grille body is installed on the lower surface of the inner wall of the water filtering pool. A coarse filter screen is detachably connected to the front side of the inner wall of the water filter tank through bolts, the back face of the coarse filter screen is detachably connected with the front face of a partition plate through bolts, large-specification impurities contained in sewage are filtered through the coarse filter screen, and an air cylinder a drives a sliding block to move forwards along a moving frame; the sliding block moves to drive the brush to move on the upper surface of the coarse filter screen in the same direction, impurities filtered on the upper surface of the coarse filter screen are swept through the brush and discharged into the waste collecting box through the waste discharging opening, and the problem that part of impurities are difficult to remove through an existing conventional rotary mechanical grating is solved.

This invention relates to the field of wastewater treatment equipment technology and discloses a bar screen cleaning machine, comprising: two parallel annular guide rails, each with a traction chain that moves along it; a rake assembly, comprising two connecting blocks, a rotating shaft, rake teeth, and a telescopic component, the rake teeth being rotatably mounted on the rotating shaft, the two connecting blocks being rotatably connected to both ends of the rotating shaft, the connecting blocks being connected to the traction chain, and the rake teeth having long and short rake teeth at both ends; a bar screen located between the two annular guide rails, the top of which has a first arc-shaped plate located inside the top of the annular guide rails and parallel to them; and a horizontal conveyor belt positioned below the top of the first arc-shaped plate. This invention stabilizes impurities by trapping them between the long rake teeth and the arc-shaped plate, preventing them from scattering back into the water.

This utility model relates to the field of bar screen cleaning technology and discloses a bar screen surface cleaning device for sewage treatment. It includes a movable plate and a connecting arm connected to a fixed plate, on which several equally spaced clips are installed. A connecting frame contains a lifting mechanism connected to a scraper. The utility model moves the movable plate to the top of the bar screen to be cleaned, aligning the clips on the fixed plate with the bar screen's grooves. Driven by the moving mechanism, the clips on the fixed plate engage with the grooves in the bar screen, thus pushing out the fixed impurities trapped in the grooves. When the clips are fully engaged in the grooves, they are flush with the bar screen. At this point, the moving mechanism drives the scraper to move, bringing it into contact with the bar screen. Driven by the lifting mechanism, the scraper rises and scrapes away solid impurities from the bar screen surface, achieving cleaning.