33results about How to "Guaranteed screening effect" patented technology

The utility model provides a bio-fertilizer screening device, which relates to the technical field of bio-fertilizer production and comprises a screening box, a movable plate is arranged in the screening box, a storage box is mounted at the top of the screening box, and an adjusting component is arranged on one side of the outer end of the screening box and used for adjusting the use position of the movable plate. The adjusting assembly comprises a fixing plate, an electric telescopic rod and a movable groove, and a conveying assembly is arranged between the storage box and the screening box and used for conveying the bio-fertilizer in the storage box into the screening box. According to the bio-fertilizer screening device, the use position of the movable plate can be adjusted through the adjusting assembly, so that the staggered position between the two screening holes can be adjusted, bio-fertilizer of different particle sizes can be screened through the screening holes, and the bio-fertilizer in the storage box can be quantitatively conveyed into the screening box through the conveying assembly; and the discharge amount of the bio-fertilizer from the screening box can be adjusted through an adjusting plate, so that the screening effect of the bio-fertilizer is ensured.

The application discloses a combine harvester with a material differentiation processing function, which comprises a walking chassis, a ploughing and harvesting assembly, a material conveying assembly and a threshing and cleaning assembly arranged in sequence from front to back on the walking chassis; the threshing and cleaning assembly comprises a threshing device and a cleaning device arranged in an up-down mode; the cleaning device comprises a sieve body and a driving main shaft for vibrating the sieve body; the number of the sieve bodies is at least three, and all the sieve bodies are closely arranged in the axial direction of the driving main shaft; a driving member is connected between the driving main shaft and each sieve body, and the specifications of the driving members connected with the sieve bodies at different positions are different, so that the vibration parameters of the sieve bodies at different positions are different. In the application, the structural design of the cleaning device can fully meet the distribution characteristics that the materials falling from the threshing cylinder of the threshing device are more on both sides and less in the middle, and targeted screening processing of the differentially distributed materials is realized.

This utility model discloses a batching and mixing device for concrete block production, relating to the field of concrete block production technology. The utility model includes a mixing chamber, and further includes: a screening section disposed at the bottom of the mixing chamber; and a mixing section disposed within the mixing chamber. The screening section includes a U-shaped frame fixedly connected to the bottom of the mixing chamber, with a screen rotatably connected to the U-shaped frame. A rectangular frame is disposed at the bottom of the mixing chamber, and a motor is fixedly connected to the front of the rectangular frame. By incorporating a screening section, this utility model solves the problem that after the material is mixed and enters the feeding stage, the lack of necessary screening steps makes it difficult to effectively separate impurities and lumps in the mixture. These unremoved impurities and lumps directly enter subsequent processes, adversely affecting product quality, production efficiency, or equipment operational stability.

The utility model relates to the technical field of production and manufacturing of non-ferrous metal alloy materials, in particular to a dust treatment device for production and manufacturing of non-ferrous metal alloy materials, which comprises a device body, the device body is provided with a connecting mechanism, and the connecting mechanism comprises a connecting assembly arranged on the outer wall of the device body. A scraping assembly is arranged on the upper section of the device body, and a screening assembly is arranged on the lower section of the device body. The screening assembly of the device is unique in design, the screening plate is driven by the connecting sliding sleeve to reciprocate up and down, dust in production of non-ferrous metal alloy materials can be efficiently screened through cooperation with the scraping plate at the bottom, the screening precision and efficiency are improved, the scraping plate can scrape off materials left on the screening plate in time when the screening plate moves, and the screening efficiency is improved. And meanwhile, the inner wall of the device can be ensured to be clean, the service life of the device is prolonged, and the maintenance cost is reduced.

The utility model belongs to the technical field of garbage separation, and particularly relates to a dry and wet garbage separation device convenient to clean, which comprises a dry and wet separation mechanism and a smashing mechanism, the dry and wet separation mechanism comprises a rack, a feeding groove, a discharging groove and a second gear motor are fixedly arranged on the rack, the second gear motor is in driving connection with a screen drum, and a spiral plate is fixedly arranged on the inner wall of the screen drum. A cleaning mechanism is arranged at one end of the screen drum and comprises an inner water pipe and an outer water pipe which are located on the inner side and the outer side of the screen drum respectively, and a plurality of spray heads and high-pressure spray heads are installed on the inner water pipe and the outer water pipe respectively. The axis of each high-pressure spray head is located in the radial direction of a circle where the hole centers of one set of screen holes are located. In the garbage separation process, objects blocked in the screen holes can be flushed out into the screen drum by high-pressure water flow sprayed out by the high-pressure spray head, a water curtain sprayed out by the spray head can comprehensively scrub objects attached to the inner wall of the screen drum, and the screen drum is effectively cleaned through internal and external cooperation.

The utility model discloses a crushing and screening device which comprises a box body, a screening assembly is horizontally arranged in the box body, the screening assembly comprises a screen cylinder, a left end plate and a right end plate are fixed to the two ends of the screen cylinder respectively, and a crushing assembly is arranged in the screen cylinder. According to the calcium hydroxide crushing device, the box body, the screening assembly, the crushing assembly, the first motor, the second motor and the feeding assembly are arranged, a calcium hydroxide raw material is added into the screening assembly through the feeding assembly, and in the process that the second motor drives the screening assembly to rotate, the first motor drives the crushing assembly to rotate at a high speed in the screening assembly; the calcium hydroxide raw material continuously rolls along with rotation of the screening assembly, the crushing assembly is matched to strike and crush the calcium hydroxide raw material, the materials with the crushed particles reaching the standard penetrate through a screen barrel of the screening assembly to be discharged, the materials with the particles not reaching the standard are continuously crushed in the screening assembly, and the crushing effect is guaranteed.

The invention relates to the technical field of wetland restoration, and discloses a floating object removing device for wetland restoration, which comprises a floating platform, and also comprises a conveying device arranged on the floating platform and uniformly connected with a plurality of groups of baffles; the collecting assembly is arranged on the side, close to the bottom end of the conveying equipment, of the floating platform and used for stirring the floating objects on the wetland to one side of the conveying equipment; the screening cavity and the collecting cavity are sequentially arranged on the side, close to the top end of the conveying equipment, of the floating platform, a multi-stage screening assembly is arranged in the screening cavity, floating objects are screened in a vibration mode, the conveying equipment is knocked, and a collecting box is arranged on the side, close to the multi-stage screening assembly, of the collecting cavity; according to the device, the cleaning area of the device on floating objects can be increased, the cleaning effect of the floating objects mixed in soil is improved, the water content of the collected floating objects is reduced to the maximum extent, and the anti-blocking effect of the filter plate is improved.

The utility model discloses a screening and conveying device for tablet production, and relates to the technical field of tablet screening and conveying. A top plate is fixedly mounted at the top of the support frame; a rectangular groove facilitating installation of the screening assembly is formed in the top plate. The screening assembly comprises a screening box. The bottom of the screening box is conical; a powder screening net is fixedly mounted in the screening box; a guide rod is arranged on the powder screening net; a feeding frame is fixedly mounted at one corner in the screening box; a plurality of rings are placed on the powder screening net; screening holes formed in the powder screening net are divided into first screening holes and second screening holes; during use, the feeding hopper is supported through the supporting rod, medicine particles are conveyed to the feeding frame through the feeding hopper, effective screening of the medicine particles large in size in the manufacturing process is achieved, the medicine particles conforming to the size fall into the multiple rings on the powder screening net through the feeding frame, and through vibration of the vibration motor, the medicine particles are screened through the feeding frame. And the multiple rings are sequentially and circularly moved and conveyed along the guide rods.

The utility model discloses a kind of size separating machines for processing chestnut, it is related to chestnut processing technical field, including fixed seat, the inside of fixed seat is provided with mounting table, and the outside of mounting table is provided with multiple thin sieve holes, the top of mounting table inside is provided with threaded rod, the top of fixed seat is installed with separating seat, and the bottom end of separating seat inside is provided with multiple thick sieve holes, the middle position of separating seat bottom end is installed with mounting seat.The utility model drives plug-in block to rotate by the drive of driving motor, so that plug-in block can be inserted into the inside of clamping groove to drive mounting column to rotate as a whole, so that sweep plate is swept in the inside of separating seat, to ensure that chestnut can be screened by thick sieve hole, secondly, the device is further separated and screened by being provided with mounting table, the grading screening process of the device is realized by using mounting table, to ensure the size separation quality and efficiency of the device.

This utility model relates to the field of pulverizers, and more particularly to a pulverizer for gypsum calcination with a screening mechanism. A pair of pulverizing rollers are installed in the middle of the pulverizer body, and a material discharge port is provided below the rollers. Multiple screens are installed below the material discharge port via mounting grooves, and trays are installed below the screens. A discharge port is located on the side away from the screens. In this utility model, the bottom of the pulverizer body allows for quick assembly and disassembly of the screens and trays via mounting grooves and insert pins to facilitate material removal. Vibration motors are installed on both the screens and trays to achieve a vibratory screening effect. Spring assemblies are provided on both the mounting grooves and insert pins to assist vibration. The movable insert pins allow for quick locking and unlocking of the screens and trays, effectively ensuring screening results and improving work efficiency.

The vibrating screen comprises a bin body, a screening mechanism and a driving mechanism, the screening mechanism is arranged in the bin body, the screening mechanism comprises a supporting piece, the screen and a ball body, the supporting piece is fixedly arranged in the bin body and divides the interior of the bin body into a screening cavity and a discharging cavity, and the ball body is arranged in the bin body. A plurality of through holes for communicating the screening cavity with the discharging cavity are formed in the supporting piece in a penetrating mode, a plurality of limiting cavities are further formed in the supporting piece, at least one ball is arranged in each limiting cavity, and the filter screen is fixedly arranged on the upper end face of the supporting piece; the driving mechanism comprises a base, elastic pieces and a vibrating piece, the base is movably connected with the bin body through the multiple elastic pieces, the vibrating piece is connected with the bin body, and the vibrating piece is used for driving the bin body to vibrate so that all the balls can impact the upper end face of the supporting piece. The problem that in the prior art, a screen of a vibrating screen is prone to being blocked is solved.

The utility model discloses a small fish and small shrimp airflow suspension formula grading screening machine belongs to grading screening technical field, aiming at the problem of low efficiency and mechanical vibration and screen net combination's screening machine influence product quality and survival rate of manual screening mode, including box, air outlet, conveyer belt, baffle, separate blocking mechanism, collection mechanism and controller, the inside rear side of box is provided with the wind box, the air outlet even fixed connection is in the top of wind box, the conveyer belt sets up in the top of box, the baffle fixed connection is in the top of conveyer belt, separate blocking mechanism even sets up in the front side of conveyer belt, the utility model discloses the wind box, air outlet, conveyer belt and separate blocking mechanism that set up can realize accurate grading screening according to the size and weight of small fish and small shrimp, and the buffer layer one can alleviate the impact force of small fish and small shrimp in the screening and collection process, effectively protect the integrity of small fish and small shrimp, improve product quality, satisfy different production demand.

The application discloses a high-purity quartz sand purification pickling device, which comprises a pickling bin, a plurality of groups of guide rails are vertically arranged on the opposite inner walls of the inner cavity of the pickling bin, transversely arranged rotating rollers are slidably connected between the opposite guide rails on the two sides of the inner wall, the two ends of each group of the rotating rollers are fixedly connected with rotating shafts, the rotating shafts at the two ends are respectively clamped in the track grooves of the opposite two groups of guide rails, a certain gap is reserved between the adjacent rotating rollers, the inner cavity of the pickling bin is provided with a first lifting mechanism, the first lifting mechanism can simultaneously control all the rotating rollers to move in the guide rails, can preliminarily screen the quartz sand according to the particle size, the large-particle quartz sand moves up and down in the pickling liquid, sufficiently contacts with the pickling liquid, the rotating rotating rollers and the bubbles sprayed by the side wall can enhance the tumbling of the quartz sand stacked on the rotating rollers, enhance the pickling effect, and facilitate the discharging.

The waste concrete crushing and screening device comprises supporting pieces and screening pieces, the multiple screening pieces are arranged in the vertical direction, the adjacent ends of the multiple screening pieces are fixedly connected in a penetrating mode, the two supporting pieces are symmetrically arranged, and the two supporting pieces are arranged on the vertical end faces of the two symmetrical sides of the multiple screening pieces correspondingly; the two supporting pieces are fixed to the vertical end faces of the two sides of the screening pieces correspondingly, the screening pieces comprise screening frame boxes, the upper ends and the lower ends of the screening frame boxes are open, the adjacent ends of the screening frame boxes in the multiple screening pieces are fixedly connected, and screen pieces are horizontally arranged in the screening frame boxes. And moving plates are arranged on the two sides of the top of the screen piece in the screening frame box. The problems that an existing screening device for waste concrete aggregate particle size screening generally adopts a fixed screen plate for screening, a structure for accelerating concrete aggregate smashing and assisting aggregate passing is not provided during screening, and the screening effect and screening convenience are affected are solved.

This utility model provides a rice processing bran dust collection device, belonging to the field of rice processing. It includes: a housing containing multiple screening components; each screening component includes a screening plate, a shaft, a screen, and a guide plate. The shaft passes through one end of the screening plate and is rotatably connected to it. One end of the shaft is fixedly mounted on the inner wall of the housing. A discharge port is provided through the screening plate, and a limiting groove is provided on the discharge port. A mounting frame is provided within the limiting groove, and the screen is fixedly mounted within the mounting frame. The guide plate is fixedly mounted at the bottom of the screening plate. This utility model uses multiple screening components to achieve multi-stage screening, ensuring screening efficiency and keeping the bran dust dry, thus increasing practicality. A shaking component is also included, which drives the screen to shake during screening, improving screening efficiency and preventing screen clogging.

The utility model relates to building waste treatment technical field, concretely is a kind of building interior decoration waste classification and recovery device, including multiple support legs, the top of multiple support legs is fixedly connected with support plate, the surface of support plate is rotatably connected with screening cylinder, the surface sliding connection of both ends of support plate has moving block, the surface sliding connection of moving block has fixed plate, the surface of fixed plate is rotatably connected with shaft, the surface of shaft is inserted with connecting shaft, two connecting shafts are fixedly connected with brush, and the surface of brush is attached in screening cylinder;Beneficial effects are that: the outer surface of screening cylinder is provided with brush, can clean the decoration waste particles attached on screening cylinder, prevent waste from plugging sieve hole, ensure the screening efficiency and effect of screening cylinder, by the cooperation of manual screw rod, moving block and fixed plate, the distance of brush and screening cylinder can be flexibly adjusted to change cleaning intensity, further improve screening effect and efficiency.

This utility model belongs to the field of modified material screening technology, specifically a screening device for plastic production. It includes an outer cylinder, inside which a screening cylinder is rotatably installed. Both ends of the screening cylinder are fitted with toothed rings. Two fixed frames are fixedly connected to the top of the circumferential surface of the outer cylinder. A rotating column is rotatably installed on the two fixed frames. Gears are fitted at both ends of the rotating column, and the gears are housed within the fixed frames, meshing with the toothed rings. A motor is installed on one side wall of one of the fixed frames, and the output end of the motor is connected to one end of the rotating column. During screening, this utility model can fully disperse the material, evenly distributing it within the screening cylinder. This effectively prevents localized accumulation of material within the screening cylinder, reduces sieve hole blockage, and allows small particles to pass through the sieve holes more easily, while larger particles remain inside the screening cylinder, thus achieving a more thorough screening effect and greatly improving the screening rate.

The invention is suitable for the technical field of asphalt processing, and provides a prebaked anode modified asphalt raw material processing device which comprises a base, front matching rods, rear matching rods and a screen drum, the front end of the base is rotationally connected with the symmetrical front matching rods, the rear end of the base is provided with sliding grooves, and sliding blocks are slidably connected into the sliding grooves; the sliding blocks are internally and rotatably connected with rear matching rods, lantern rings are fixedly connected between the two front matching rods and the rear matching rods, the two lantern rings are internally and rotatably connected with a screen drum, driving assemblies are arranged between the front matching rods and the screen drum in a matched mode, and telescopic rods are arranged between the two rear matching rods and side plates of the base; first limiting sliding rods are fixedly connected to the front matching rod and the rear matching rod correspondingly, a cover is slidably connected between the multiple first limiting sliding rods, an adjusting assembly is arranged between the cover and the rear matching rod, and an impact assembly is further arranged between the cover and the screen drum in a matched mode. The device has the advantages of adapting to various material working conditions and effectively avoiding material blockage.

The utility model provides a bolt screening device which comprises a frame body, a screening cylinder is installed on one side of the frame body, a screening plate is arranged in the screening cylinder, screening holes are evenly formed in the screening plate, a stirring assembly is arranged in the screening cylinder, a dredging assembly is arranged on one side of the screening cylinder, and a discharging assembly is arranged on the other side of the screening cylinder. The dredging assembly comprises a circular plate arranged on one side of the screening cylinder, and ejector rods are evenly installed on the upper surface of the circular plate. The dredging assembly further comprises an adjusting structure which is arranged outside the screening cylinder and used for enabling the ejector rod to rotate firstly and then ascend to conduct dredging work on the screening plate. Through the arranged dredging assembly, when bolts block the screening plate, an ejector rod can be rotated to the position under a screening cylinder, then the ejector rod is controlled to ascend, the ejector rod can enter screening holes in the screening plate, the bolts blocked in all the screening holes in the screening plate can be ejected out at a time, the equipment shutdown time during blockage treatment is further shortened, and the screening efficiency is improved. And the screening efficiency is greatly improved.

The utility model discloses a fertilizer processing screening device, relates to fertilizer production technical field, including screening box, storage box and screening hole, one side of screening box is connected with the motor, is provided with the box cover right above screening box, the top of box cover equidistantly is provided with the feed divider pipe, the feed divider pipe is provided with the feed divider pipe, the feed divider pipe is provided with the feed divider pipe, and the feed divider pipe is provided with the feed divider pipe. A screening mechanism is arranged in the screening box body, the screening mechanism screens materials through screening holes with different mesh numbers, then pretreatment of raw materials is completed, a vibration mechanism is arranged under the storage box, the vibration mechanism vibrates the bottom end of the storage box, and the vibration mechanism vibrates the bottom end of the storage box. And therefore, the screening speed of materials in the storage box is increased. In the using process, the device is screened in the material storage process through the material screening holes formed in the bottom end of the material storage box, or screen plates of different sizes can be conveniently installed at the top end of the material storage box, the materials are filtered for the first time, and then the screening efficiency of the materials of different types is improved.

This invention relates to the field of construction waste treatment technology, specifically to a construction waste screening and recycling device, comprising an installation box with a feed track fixedly installed on it. Three sets of discharge ports are fixedly installed at the bottom of the installation box. Two sets of symmetrically distributed variable-diameter spiral rollers are arranged inside the installation box. Both sets of variable-diameter spiral rollers are rotatably connected to the installation box via mounting rods. Gears are sleeved on both sets of mounting rods, and the two sets of gears mesh together. The outlet of the feed track is aligned between the two sets of variable-diameter spiral rollers and located at the ends of the spiral rollers. The material gravity drives a tilting plate, which in turn drives the variable-diameter spiral rollers to rotate via chain transmission. No external motor is required. Ratchets and pawls prevent the rollers from reversing, ensuring stable sorting. A scraper automatically cleans the roller surface as the rollers rotate, reducing material adhesion. This structure reduces energy consumption and maintenance frequency while ensuring screening efficiency.

This utility model discloses a screening device for producing high-slag-erosion-resistant iron trough castable, specifically relating to the technical field of screening equipment. It includes a driving component for driving a screen frame to screen the iron trough castable. The driving component comprises two screws respectively located on both sides of the screen frame, with the screws externally fixed to the screen frame via a buffer component. A movable shaft is located at the bottom of the buffer component. This utility model uses a servo motor to drive the screws to rotate. The screws drive the movable shaft to rotate synchronously via a first pulley, a belt, and a second pulley. Thus, when the screws drive the moving seat to reciprocate the screen frame, the movable shaft drives a lever to repeatedly move a spring-limited connecting plate up and down. This causes the material on the screen plate to not only be pushed but also thrown up and fall freely due to the up-and-down movement of the screen plate, creating a compound vibration. This also increases the collision efficiency between the material and the screen frame, achieving the purpose of breaking up material agglomeration and preventing screen frame blockage.

This utility model relates to the field of crushing device technology, and more particularly to a sample crushing device for rock and soil exploration. It includes a shell, with two crushing rollers rotatably connected to the center of the shell. A screen ring is rotatably connected inside the shell and outside the two crushing rollers, with multiple screen holes on the screen ring. A lifting plate is installed inside the screen ring. A feed inlet is opened on the front side of the shell relative to the inner side of the screen ring, and a feed hopper is fixedly connected to the outside of the feed inlet. A discharge outlet is opened at the bottom of the shell. A cleaning component is installed between the inner side of the shell and the outer side of the screen ring. This utility model, through the design of the screen ring and the lifting plate, can automatically return rock and soil samples with unqualified particle sizes to the crushing area for further crushing. Furthermore, the cleaning component continuously brushes the inner wall of the shell and the outer wall of the screen ring, effectively preventing rock and soil particles from clogging the screen holes or adhering to the inner wall of the shell, ensuring the sieving effect and sample integrity.

The utility model relates to the technical field of rock wool recovery, one embodiment of the utility model provides a waste rock wool recovery device for an electric furnace, the waste rock wool recovery device comprises a treatment box and a screening structure, the screening structure comprises a vibration mechanism, a screening frame, a screening plate and a collision piece, the vibration mechanism is arranged in the treatment box, the screening frame is mounted on the inner side of the vibration mechanism, and the collision piece is arranged on the screening frame; a screening plate is arranged at the inner bottom of the screening frame, the screening frame and the screening plate synchronously shake when vibrating along with the vibrating mechanism, the collision piece is installed in the treatment box, and when the screening frame synchronously vibrates and shakes along with the vibrating mechanism, the screening frame collides with the collision piece. According to the technical scheme, the technical problems that in the related technology / prior art, a screening mechanism in a recycling device is simple, a screen plate is usually adopted for screening smashed waste rock wool, the screen plate is prone to being blocked in the screening process, and the screening effect on the waste rock wool is affected are solved.

This utility model discloses a multi-stage stepped rice screening device, belonging to the field of screening devices. It includes a base frame, on which a first fixed rod and a second fixed rod are fixed. A first screening frame is rotatably connected to the first fixed rod, and a first screen is installed on the first screening frame. Vibrating plates are installed on the first and second screening frames, working in conjunction with a mounting assembly, a vibration assembly, and a vibrator. During the screening process, this creates a tumbling vibration, which not only disperses the material for uniform screening but also applies force to the material, preventing clogging of the screen mesh and ensuring normal screen operation and screening efficiency. The mounting assembly adopts a spliced ​​structure, allowing for quick disassembly to replace the support springs in the vibration assembly. A first connecting sleeve and a second connecting sleeve allow adjustment of the support plate's position, thereby changing the tilt angle of the corresponding screening frame.

The utility model belongs to the technical field of undaria pinnatifida processing, and particularly relates to a screening machine for undaria pinnatifida, which comprises a loading assembly capable of adjusting the retention time of the undaria pinnatifida in the screening machine when the undaria pinnatifida is screened, and a screening assembly capable of continuously screening the undaria pinnatifida on the premise of keeping the screening effect of the screening machine is arranged in the loading assembly. An air blowing assembly capable of further guaranteeing the screening effect of the screening machine is arranged above the screening assembly. According to the undaria pinnatifida screening device, the striking piece capable of synchronously running with the screening piece is arranged below the screening piece, so that the rubber stick rotating along with the rotating shaft can continuously knock the screening plate in the undaria pinnatifida screening process, and the situation that undaria pinnatifida residues adhere to the screening plate or screening holes of the screening plate are blocked is avoided; the undaria pinnatifida screening machine can continuously screen undaria pinnatifida while ensuring the screening effect.

This utility model discloses a tobacco stem air separator screen cleaning device, relating to the field of tobacco processing technology. It includes a drive mechanism, a swing tube, and nozzles. The swing tube is rotatably installed inside the air separator chamber, located above the screen. Both ends of the swing tube extend outside the air separator chamber, with one end connected to a compressed air source and the other end sealed. A nozzle is fixedly installed and connected to the swing tube, with the nozzle's outlet facing the screen. The fixed end of the drive mechanism is fixedly installed, and its output end is connected to the sealed end of the swing tube. The drive mechanism outputs to drive the swing tube to reciprocate. Compressed air supplied by the compressed air source is ejected through the nozzles, while the drive mechanism drives the swing tube to reciprocate, cleaning the screen over a wide area. This causes shorter stems adsorbed at the bottom of the screen to detach from the screen and be sent to downstream processes through the outlet, effectively preventing shorter stems from clogging the screen and improving the stem screening effect and product quality.

This utility model discloses an agricultural sorting machine with a recycling structure, relating to the field of agricultural planting technology. It includes a base, a vibration assembly on the inner side of the base, a sorting barrel at the top of the base, a feed inlet at the top of the sorting barrel, three screening plates fixedly connected inside the sorting barrel, and three discharge pipes fixedly connected to the outer side of the sorting barrel, with the three discharge pipes corresponding to the positions of the three screening plates. This utility model, through its vibration assembly, screening plates, and discharge pipes, can achieve multi-stage sorting capabilities. By starting the drive motor, in conjunction with the transmission rod, cam, connecting rod, impact block, vibration block, and rigid spring, the sorting barrel vibrates, thereby causing the three screening plates to vibrate. Seeds of different sizes are discharged into their corresponding discharge pipes and finally discharged from the discharge port. The screening holes of the three screening plates decrease in size, enabling multi-stage sorting.

The utility model belongs to the technical field of powdery chemical raw material processing, and particularly relates to a powdery chemical raw material large particle screening mechanism which comprises a base, the right side of the base is in contact with a fixing plate, the right side of the fixing plate is fixedly connected with a supporting plate, the upper end of the supporting plate is fixedly connected with a box body, and the outer side of the box body is in contact with a mounting seat. The powder chemical raw material screening device is provided with the box body and the filter screen and can screen powder chemical raw materials, meanwhile, the motor, the cam, the connecting rod and other components are arranged, the motor runs to drive the cam to rotate, the cam drives the box body to shake through the connecting rod, then the filter screen synchronously shakes, the shaking of the filter screen can effectively improve the screening effect, large particles are rapidly separated out, and the screening efficiency is improved. The structure solves the problems that when traditional powdery chemical raw material large particle screening is conducted, efficiency is low, and operation is inconvenient, efficient and convenient screening operation is achieved, and the screening device is suitable for large-scale production scenes.

This invention provides an activated sludge sorting method and a wastewater treatment method. The activated sludge sorting method includes the following steps: supplying a portion of activated sludge from a biological treatment tank to an activated sludge sorting device; sorting the portion of activated sludge to remove sludge residue, thereby obtaining first activated sludge; and returning the first activated sludge to the biological treatment tank; measuring the organic matter content in the first activated sludge to obtain a first organic matter content; and comparing the first organic matter content with a predetermined organic matter content value to determine whether further sorting of the activated sludge in the biological treatment tank, including the first activated sludge, is necessary. By employing the activated sludge sorting method of this invention, the sorting status of the activated sludge can be monitored in real time based on the organic matter content, thereby improving the treatment effect of the activated sludge process.