157results about How to "Fully screened" patented technology

The invention relates to the technical field of plastic recycling, and discloses a fragment screening mechanism for plastic particle production, the fragment screening mechanism for plastic particle production comprises a rack and a screening hopper, a coarse screening plate is fixedly installed on the inner wall of the screening hopper, and according to the fragment screening mechanism for plastic particle production, a motor is started to drive a rotating shaft to rotate; meanwhile, plastic particles in the screening hopper can be scattered through cooperation of a wheel disc, a cam groove, a ball head rod, a push plate, a sliding rod, a spiral groove and a stirring shaft, meanwhile, the plastic particles in the hopper can be turned up and down in a reciprocating mode through cooperation of a connecting rod, a sliding table and the stirring shaft, the scattering effect on the plastic particles is further improved, and adhesion of the plastic particles is avoided; accordingly, the plastic particles can be prevented from blocking the coarse screening plate, the screening effect and efficiency of the plastic particles are improved, meanwhile, the discharging pipe can be dredged through the push rod, the inclined groove, the sliding plate and the ejector rod, the plastic particles are prevented from being blocked in the discharging pipe, and the discharging efficiency of the plastic particles is improved.

The invention belongs to the technical field of whole vehicle detection and authentication, and particularly relates to a method for generating an optimal solution and a feasible solution of an actual measurement scheme for a multi-record declaration value, which comprises the following steps of: performing logic association classification on parameters according to enterprise record information to form an entry system, and generating an optimal solution and a feasible solution of the actual measurement scheme based on preset logic of the entry system in combination with a binding relationship; project configuration information can be obtained; project configurations which cannot be covered by a similar report are screened, the configurations needing to be actually measured are integrated, only parameters related to actually measured projects and parameters with multiple declaration values in results are reserved, final actually measured analysis configurations are formed, and an actually measured scheme which most meets the requirements is found out through step-by-step combined analysis; and traversing other entries to generate a complete actual measurement configuration. According to the method, the technical problem of how to quickly and efficiently formulate the optimal detection scheme for the recorded parameters and the existing video report by a vehicle production enterprise is solved.

The utility model discloses a novel impurity removing and screening device for pine nut processing. The novel impurity removing and screening device comprises a processing box and supporting legs. According to the pine nut screening device, the brush, the air exhaust cover and the air outlet holes are adopted, during operation, pine nuts moving in the screening cylinder can make contact with the cleaning plate on the surface of the blowing pipe in a larger range when the screening cylinder rotates, the brush on the surface can wipe the surfaces of the pine nuts, impurities on the surfaces of the pine nuts are removed, and the screening efficiency is improved. The air outlet holes in the surface of the blowing pipe can guide out air sprayed out of the air spraying holes, impurities on the surfaces of the pine nuts can be further removed through impact of airflow, and the air exhaust cover below the air outlet holes can synchronously suck the interior of the pine nuts while air is sprayed out through the air outlet holes; therefore, the blown and scraped impurities can be guided out in time by the exhaust hood, secondary attachment of the impurities is avoided, the impurity removal effect on the pine nuts is improved, and the pine nut impurity removal device has the advantages of multiple impurity removal and screening and good impurity removal effect.

The seed cotton foreign fiber cleaning machine comprises a box body and an adsorption chamber, the top end of the interior of the box body is rotationally connected with a first winding roller, a material guiding plate is fixed to the rear wall of the interior of the box body, the left side and the right side of the interior of the box body are rotationally connected with second winding rollers, and a discharging plate is fixed to the bottom end of the interior of the box body; the adsorption chamber is fixed to one side of the box body, telescopic rods are fixed to the left end and the right end of the bottom wall in the adsorption chamber, buffer springs are arranged on the outer walls of the telescopic rods, a screen hopper is fixed to the top ends of the telescopic rods, and a vibration motor is fixed to the front end of the screen hopper. Compared with an existing foreign fiber cleaning machine, the seed cotton foreign fiber cleaning machine is provided with multiple stages and multiple cleaning mechanisms, foreign fibers of different lengths can be effectively cleaned, the cleaning effect of the seed cotton foreign fiber cleaning machine can be improved, meanwhile, the seed cotton foreign fiber cleaning machine is provided with the impurity screening mechanism, gravel, soil and other impurities mixed in seed cotton raw materials can be screened out, and the cleaning efficiency is improved. And the practicability of the device is improved.

The utility model discloses a protective device of a vibrating screen, which relates to the technical field of vibrating screens, and aims to solve the problem that a screen mesh of an existing vibrating screen is easy to damage due to material impact during feeding, and comprises a vibrating screen body, a top plate is arranged at the top of the rear side of the vibrating screen body, and a feeding hopper is arranged on the top plate; due to the arrangement of the upper guide plate, the lower guide plate and the connecting rod, materials can be guided by the double-layer guide plates when entering the screen mesh, the falling angle of the materials during feeding is reduced, the force of directly impacting the screen mesh is reduced, and the material feeding efficiency is improved. Therefore, the screen located at the feeding position is effectively protected, the production cost is effectively reduced, the production efficiency is improved, the service life of equipment is prolonged, meanwhile, the spring supporting mechanism can achieve automatic reset of the lower guide plate, materials completely fall into the vibrating screen, and it is guaranteed that the materials are fully screened.

A kiln tail powder coarse and fine screening device of a rotary kiln comprises a fixing plate, an inner cylinder is rotationally installed on the fixing plate, an outer cylinder is sleeved on the periphery of the inner cylinder, the outer cylinder is fixedly installed on the fixing plate, a plurality of supporting seats are fixedly installed on the bottom side of the outer cylinder, the heights of the supporting seats are sequentially reduced from left to right, and a feeding pipe is arranged on the fixing plate in a communicating mode. The device is simple in structure and ingenious in conception, materials can be conveyed without a negative pressure pump, the first spiral blade and the second spiral blade can rotate to convey the materials to the first discharging port and the second discharging port, and when the first spiral blade rotates, large and small particles mixed together can be turned over through friction force, so that the small particles penetrate through the sieve holes, and the material conveying efficiency is improved. And when the powder is screened, the first spiral blade and the second spiral blade rotate to scrape powder adhered to the inner wall and the outer wall of the inner barrel and the inner wall of the outer barrel, the market requirement is met, and the powder screening device is suitable for being popularized.

The invention discloses a sample grinding device for soil detection, which comprises a grinding cylinder, the outer surface of the grinding cylinder is communicated with a heater, the bottom of the inner cavity of the grinding cylinder is slidably connected with a collection box, the sample grinding device also comprises a transmission shaft, the transmission shaft is rotatably connected to the top of the inner cavity of the grinding cylinder, and the outer surface of the transmission shaft is fixedly connected with a stirring plate; a boosting plate and a grinding roller are fixedly connected to the bottom of the stirring plate, the grinding roller is fixedly connected to the position, away from the stirring plate, of the transmission shaft, a screening assembly is slidably connected to the outer surface of the grinding roller, and a guiding assembly is fixedly connected to the bottom of the screening assembly. According to the sample grinding device for soil detection, caking of soil in the grinding cylinder is prevented, it is ensured that the soil is fully heated and dried when the stirring plate stirs the soil, the transmission shaft drives the grinding roller to move when rotating, and screening of the ground soil through the screening assembly is facilitated.

The invention belongs to the technical field of cement detection, and particularly discloses a cement fineness detection device and method.The cement fineness detection device comprises a case, a pair of case doors are hinged to one side of the outer wall of the case, a controller is arranged on one side of the outer wall of the case, a negative pressure cylinder is fixedly connected to the top of the case, a negative pressure mechanism is arranged in the case, and the negative pressure cylinder is fixedly connected to the bottom of the case. A negative pressure mechanism is arranged in the negative pressure cylinder, the negative pressure mechanism communicates with the negative pressure cylinder, an anti-blocking mechanism is arranged in the negative pressure cylinder, a screen box is clamped to the inner wall of the negative pressure cylinder, a screen mesh is arranged at the bottom of the screen box, and a sealing cover is clamped and slidably connected to the top of the screen box. According to the screening device for the cement detection sample, the internal cement detection sample can be blown away, so that the screening efficiency is improved, the ground can be cleaned by the blown air flow through the arrangement of the structures, the cement detection sample can be fully screened in the detection process, meanwhile, knocking is not needed, and mechanical damage to the cement detection sample is avoided.

The application discloses a kind of east star juvenile fish screening transfer device for breeding and its using method, it is related to fry screening transfer technical field.The present application includes screening transfer component, and one side of screening transfer component is fixedly connected with transfer control component, and transfer control component is connected with screening transfer component, and a plurality of buffer adjustment components are fixedly connected inside screening transfer component.The present application controls quantitative into equipment inside by transfer control component, and stably controls juvenile fish to enter inside screening transfer component, and different sizes of juvenile fish are processed by using screening transfer component to multi-stage screening, and good screening juvenile fish is transferred according to size, when juvenile fish screening falls, buffer adjustment component generates buffer water curtain, and buffer operation is carried out to screened juvenile fish, reduce fry damage, realize the multi-stage screening operation of juvenile fish, keep juvenile fish moist during screening process, and reduce the damage of juvenile fish during screening process and after screening, facilitate the transfer of juvenile fish.

The utility model relates to the technical field of flour processing and screening, and discloses a screening device for flour processing, which comprises a U-shaped frame, the top of the U-shaped frame is slidably connected with a screening box, the bottom of the screening box is fixedly connected with a corrugated pipe, one side of the inner wall of the U-shaped frame is fixedly provided with a connecting pipe, and one end of the corrugated pipe is fixedly connected with the connecting pipe; a disc is rotationally connected to the inner wall of the bottom of the U-shaped frame, a spiral conveyor is fixedly mounted at the top of the disc, and the spiral conveyor is rotationally connected with the connecting pipe; the bottom of the disc is fixedly provided with a gear ring, one side of the inner wall of the U-shaped frame is provided with a power assembly, the power assembly and the gear ring are connected in a meshed mode, the power assembly comprises a servo motor and a gear, the power assembly, the gear ring, the disc and the spiral conveyor are arranged, and the power assembly drives the disc to rotate through the gear ring connected in a meshed mode; and the disc drives the spiral conveyor to rotate to adjust the position, so that the conveying position of the flour can be conveniently adjusted.

The utility model relates to the technical field of power battery shell processing, and discloses a power battery shell scrap processing device which comprises a box body, the top of the box body is communicated with a crushing shell, a first motor is fixedly assembled on the outer wall of the crushing shell, and a gear is fixedly assembled on an output shaft of the first motor; a crushing rod is fixedly assembled on the outer wall of the gear, a fixing plate is fixedly assembled on the outer wall of the box body, a second motor is fixedly assembled on the top of the fixing plate, and a cam is fixedly assembled on an output shaft of the second motor. Through the arrangement of the box body, the crushing shell, the first motor, the gear, the cam and the screen structure, after the shell is crushed by the device, the screen horizontally moves in a reciprocating mode through rotation of the cam, so that chippings can be fully screened, and the situation that the pressing effect of a pressing plate is affected by the chippings large in size is avoided; and therefore, the chipping treatment effect of the device is improved.

The utility model relates to the technical field of freeze dryer screening, in particular to a device for freeze-drying heat-sensitive solid organic peroxide, which comprises a freeze dryer body, a discharge pipe is fixedly connected to the outer side of the freeze dryer body, and a disc is fixedly connected to one end, far away from the freeze dryer body, of the discharge pipe. The driving motor drives the first gear to rotate, then gear teeth of the first gear can be used for driving the second gear, the rotating rod and the scraper to rotate, and therefore the scraper rotates to scrape off materials attached to the inner wall of the vibrating screen, the materials cannot be attached to the inner wall of the vibrating screen for a long time, and it is guaranteed that the materials can be fully screened; meanwhile, an air pump can be driven to work and can be matched with an air pipe to discharge air to the inner cavity positions of the rotating rod and the connecting rod, and then a plurality of exhaust holes are used for spraying the air to the outside, so that small impurities in the inner cavity of the vibrating screen can be blown out, and the cleanliness of the inner cavity of the vibrating screen is guaranteed.

The invention discloses a fine iron powder screening device and method, and belongs to the technical field of fine iron powder screening. The fine iron powder screening device comprises a discharging pipe, a screening mechanism is arranged at the bottom of the discharging pipe, and a supporting mechanism for supporting and vibrating the screening mechanism is arranged below the discharging pipe; the screening mechanism is arranged at the top of the supporting mechanism, the screening mechanism comprises a second screening assembly used for screening materials and a first screening assembly used for being matched with the second screening assembly to screen the materials, the second screening assembly is arranged in the first screening assembly, and the first screening assembly comprises a limiting material storage pipe; through mutual cooperation of multiple structures, a user can quickly adjust the screening precision of the screening device according to actual processing requirements, so that the screening device can better meet diversified processing requirements of the user, and the use experience of the user on the screening device is improved.

The utility model discloses a gradient density eiderdown sorting device relates to eiderdown processing equipment technical field, the utility model discloses a box body, the box body rear side fixedly connected with screening mechanism, the box body top fixedly connected with scattering mechanism. The utility model screening mechanism three layer inclined sieve plate design, realizes gradient sorting through different aperture, solves the problem that single -layer sieve plate can only simple screening, cannot fine grading, can accurate separation different density's eiderdown, and the vibrating mechanism of cam drive of inclination structure cooperation, utilize gravity and vibration double -action enhancement eiderdown fluidity, avoid the accumulation jam of planar formula sieve plate because of poor mobility, promote the sorting efficiency greatly, double -shaft motor passes bevel gear, worm and worm wheel drive cam rotation, and the spring reset is combined, then can make the stable and regular vibration of the sieve plate of board frame drive, ensure that eiderdown is evenly distributed on the screen surface, fully screens, further improve the sorting accuracy.

The utility model relates to mobile sorting machine technical field discloses a mobile sorting machine, including the truck, the top of truck is provided with sorting device, the top of truck and located sorting device's outside is provided with the protective shed, the rear of truck is provided with the pre -screening frame, the rear of pre -screening frame is provided with the shallow, the top of shallow is provided with the conveying device, through the adjustment assembly who sets, the staff can start first motor, drive screw rod rotation, drive the directional sliding of moving block along the sliding slot in fixed frame, avoid the deviation, at the same time, two groups of rotary rod and connecting arm symmetrical distribution, through the synchronous effect of rotating block and connecting frame on conveying device bottom, cooperate the rotation support of rotary column and connecting plate, make the angle adjustment process of conveying device smooth and no shaking, ensure the adjustment accuracy, and then adapt to the material conveying demand of different height, improve the operation flexibility and reliability of mobile sorting machine.

The utility model provides a coal mill dynamic separator which comprises a shell and a sampling assembly, a coal milling assembly is arranged at the bottom in the shell, a separation assembly is arranged at the top in the shell, the sampling assembly is connected with a light phase outlet of the separation assembly, and a coal falling pipe is further arranged in the shell. The sampling assembly comprises a sampling pipe, a sampling valve, a sample collector, a screen and a receiving tank, one end of the sampling pipe is connected with the light phase outlet of the separation assembly, the other end of the sampling pipe is connected with the inlet of the sample collector, the sampling valve is arranged on the sampling pipe, and the screen is arranged between the bottom outlet of the sample collector and the inlet of the receiving tank; and a bottom outlet of the sample collector is provided with a sample outlet valve above the screen. A first weighing device is arranged at the bottom of the sample collector, and a second weighing device is arranged at the bottom of the receiving tank. Real-time online adjustment of the fineness of the coal powder separated by the dynamic separator of the coal mill is realized, and the separation efficiency of the dynamic separator is improved.

The utility model discloses a plastic bottle piece sorting equipment, including frame, screening box, stirring mechanism, lifting mechanism, collection box and stop dog, the frame is installed in the screening box, the left end of screening box is fixed with support shaft, the inside left side of frame is fixed with two shaft sleeve, the support shaft is rotatingly connected between the two shaft sleeve, and the support shaft is fixed with the support shaft. A supporting plate is fixed to the lower right portion of the screening box, a lifting mechanism is arranged below the supporting plate, a stirring mechanism extending into the screening box is installed at the top of the screening box, and a check block is detachably installed on the screening box. The plastic bottle piece screening device is convenient to screen plastic bottle pieces, high in screening efficiency and labor-saving.

The invention discloses a road pavement cement stabilized macadam aggregate screening device and a screening method thereof, and relates to the technical field of aggregate screening, the road pavement cement stabilized macadam aggregate screening device comprises a rectangular frame, a trapezoidal frame is arranged above the top surface of the rectangular frame, a fixed support is fixedly arranged on the left side in the trapezoidal frame, and a servo motor is fixedly arranged in the middle of the top surface of the fixed support; a fixing shaft is fixedly arranged at the end of a motor shaft of the servo motor and connected with the rectangular frame through an eccentric mechanism. A first screen in left-right sliding connection is arranged on the top surface of the trapezoidal frame, and the first screen is connected with the fixed shaft through a crank mechanism; a third screen in left-right sliding connection is arranged on the top surface of the rectangular frame, and the third screen is connected with the trapezoidal frame through a connecting rod mechanism; a second screen is arranged between the first screen and the third screen and connected with the rectangular frame through a swing mechanism. By the adoption of the multi-stage layered screening mechanism, broken stones can be fully screened, and the working efficiency of follow-up operation is further improved.

The utility model discloses a solid seasoning screening device, specifically related to solid seasoning technical field, include: frame, the top side one end of frame is provided with the feed inlet, and the other end side wall of frame is equipped with the discharge gate. The utility model discloses through setting up the material guiding mechanism between the feeding pipe and the fixed plate, and the material guiding mechanism is composed of the rotating roller, the baffle, the side plate and the drive assembly, and the baffle can be composed with the side plate multiple storage bins, with the circulating rotation of storage bin, can make each storage bin receive the solid seasoning that falls down continuously from the feeding pipe in turn, and can intermittently guide the material in storage bin to the fixed plate, cooperate vibration subassembly, make the material can pass first sieve hole, second sieve hole and third sieve hole in turn and screen, and then can make the solid seasoning complete screening operation even and continuously according to the amount, effectively avoid a large number of solid seasoning layer by layer to accumulate and extrude, and the material can be fully screened, greatly improves the screening efficiency, and the use effect is better.

This invention discloses a segmented drum screen device for mineral processing, comprising a base, a storage box, a screening machine, and a mounting frame. The storage box and mounting frame are both fixedly connected to the base, and the screening machine is inclinedly positioned on top of the storage box. The screening machine includes a casing, a main shaft, and several circular screens. The main shaft is rotatably connected to the casing. Several connecting rods are fixedly connected between the circular screens and the main shaft. Several screen holes are evenly distributed on the circular screens. Baffles are rotatably connected between adjacent circular screens, and discharge holes are provided on the baffles. A drive gear is fixedly connected to one end of the main shaft, and a drive reduction motor is fixedly connected to the top of the mounting frame. A receiving box is provided inside the storage box, located below the corresponding circular screen. This invention employs a mechanical structure for mineral particle size classification. The inclination degree controls the mineral's movement speed, and the baffles control the classification and discharge speed, ensuring good classification results for minerals at each stage and improving the efficiency of mineral processing and classification operations.

The invention discloses a screening device for sodium carboxymethyl cellulose production, and relates to the technical field of screening, the screening device for sodium carboxymethyl cellulose production comprises a screening frame, a linear motor is fixedly installed on the outer wall of the screening frame, a feeding frame is fixedly arranged above the screening frame in a penetrating mode, and the screening device further comprises a screening device, the screening device comprises a pushing rod, a screening plate, a fixing frame, a sliding block, a connecting rod, a fixing block, a secondary screening frame and a collecting frame, the pushing rod rotationally penetrates through the output end of the linear motor, and the screening plate is rotationally installed on the inner wall of the screening frame; according to the screening device for sodium carboxymethyl cellulose production, raw materials which do not meet the standard can be conveniently collected in the screening process, the collected raw materials are re-screened, the utilization rate of the raw materials is increased, and meanwhile the situation that the follow-up treatment cost is affected due to the fact that the raw materials which do not meet the standard are scattered due to the fact that the collecting frame is not installed in place is avoided.

The utility model relates to the technical field of beer production and discloses a beer production and processing raw material screening device which comprises a screening box, a feeding port is formed in the top end of the screening box, a discharging port is formed in the bottom end of the screening box, a screening plate is slidably connected to the inner side wall of the screening box, and a worm is rotatably connected to the inner side wall of one side, located above the screening plate, of the screening box. The other end of the worm is connected with a rotating disc, a rotating assembly used for driving the worm to rotate is installed on the screening box, a transmission rod is hinged to the side wall of the rotating disc, the other end of the transmission rod is hinged to the screening plate, and a fixing pipe is rotationally connected to the inner top end of the screening box. According to the technical scheme, through mutual cooperation of the screening box, the screening plate, the worm, the rotating disc, the transmission rod, the fixing pipe, the fixing rod, the stirring rod, the worm gear, the motor and other structures, raw materials can be greatly turned over on the screening plate, the screening plate can fully screen the raw materials, and therefore the screening effect is improved, and the applicability of the device is improved.

The utility model provides efficient Chinese wolfberry impurity screening and separating equipment, and relates to the technical field of Chinese wolfberry separating equipment, the efficient Chinese wolfberry impurity screening and separating equipment comprises a screening box, the lower end face of the screening box is fixedly provided with four walking wheels, the right side of the upper end face of the screening box is provided with a feeding port, and the lower portion of a left side plate of the screening box is provided with a discharging plate. Firstly, an air suction pipe on the surface of a partition plate is externally connected with a fan, the air suction range is enlarged through an umbrella-shaped structure at the lower end of the air suction pipe, light impurities such as leaves are sucked out of a screening box, and meanwhile, a filter plate achieves separation of the Chinese wolfberry and small impurities through filter holes in the surface of the filter plate; the problems that existing screening equipment still has defects in the screening effect, the speed of the Chinese wolfberries entering a screening box cannot be controlled, and if the Chinese wolfberries contain many impurities and the speed of the Chinese wolfberries entering the screening box is high, the impurities in the Chinese wolfberries cannot be cleaned up are solved.

The utility model relates to the technical field of mechanical equipment, and discloses a stone powder screening device for weather-proof real stone paint, which comprises a base and a fixed cylinder, the inner side of the fixed cylinder is movably provided with a screen cylinder through a bearing, the lower end of the inner side of the fixed cylinder is movably provided with a threaded rod through a bearing, and the outer side of the threaded rod is connected with a scraper through threads. Raw materials are conveyed to the inner side of the screen drum from the left side of the material blocking frame, in the process, in order to facilitate feeding, the two sets of lifting air cylinders at the right end can be started to drive the right end of the fixed drum to move downwards to generate inclination, after feeding is completed, the driving motor is started to drive the screen drum to rotate, and therefore the raw materials can be conveniently and rotationally screened; and meanwhile, the two sets of lifting air cylinders at the left end and the right end ascend and descend in the opposite directions, inclination can be continuously generated in the screening process, raw materials can conveniently move on the inner side of the screen drum, the screening effect and efficiency are improved, screening is sufficient, and multiple times of screening are not needed.

The utility model discloses a concrete processing and screening device, which relates to the technical field of concrete processing equipment and comprises a base, a main box is arranged at the top of the base, a screening plate is arranged on the inner side of the main box in a sliding manner, four fixing plates are arranged outside the main box, and four guide rods are arranged at the top of the periphery of the screening plate. An opening and closing structure is arranged on the inner side of the main box, the opening and closing structure comprises three sliding rods, the sliding rods are all arranged on one side of the top of the main box, a triangular baffle is slidably arranged among the exteriors of the three sliding rods in a penetrating mode, and a linkage rod is arranged on the rear portion of the triangular baffle; a rotating shaft is rotationally arranged on the side, penetrating through the top of the main box, of one end of the linkage rod and slidably arranged on the inner side of one end of the opening and closing plate. According to the concrete processing and screening device, the opening and closing structure of the screening device is arranged, so that the interior of the feeding port can be prevented from being blocked, the problem that the feeding port cannot limit materials is solved, and the concrete processing and screening device has very good practicability.

The utility model belongs to the technical field of building machinery, and particularly relates to a building material screening device which comprises a frame table, supporting legs are fixed to the four corners of the bottom of the frame table, a U-shaped plate is connected to the top of the frame table in a sliding mode, and a driving assembly used for driving the U-shaped plate to reciprocate in the horizontal direction is installed at one end of the frame table. Four inserting blocks are symmetrically fixed to the top of the U-shaped plate, clamping holes are formed in the surfaces of the inserting blocks, and a surrounding frame is attached to the top of the U-shaped plate. By arranging the frame table, the supporting legs, the U-shaped plate, the driving assembly, the inserting block, the enclosure frame and the clamping assembly, reciprocating motion of the sand screening net box can be achieved, the effect of vibrating sand screening can be achieved, screening is sufficient, qualified cement cannot be retained, the screening effect is good, and when many impurities exist in the sand screening net box, the screening effect is good. And the enclosure frame can be conveniently and rapidly detached from the U-shaped plate, so that impurities in the sand screening net cage can be conveniently poured out, and the use effect is good.

The application relates to a rubber particle screening mechanism, which comprises a screening box, the inside of the screening box is provided with a first screening frame and a second screening frame from top to bottom, the inner bottom of the screening box is provided with a collecting box, the side wall of one end of the screening box is provided with a first discharge port and a second discharge port, the outer side of the first discharge port and the second discharge port is provided with a first material guide hopper and a second material guide hopper, and the top of the screening box is further provided with a feeding hopper. Through the work of a driving motor, the shaft rod drives the cam to vibrate the first screening frame and the second screening frame under the action of a first transmission wheel, a second transmission wheel and a transmission belt, and under the action of a spring rod, the first screening frame and the second screening frame can well vibrate and screen rubber particles, so that the screening of the rubber particles is more sufficient, and the screening quality is improved.

The present invention proposes a crushing and grading device and method, the crushing and grading device comprises a double-roll crusher, a screen inclined downward is arranged below the crushing mechanism of the double-roll crusher, a buffer convex strip is arranged on the screen, the crushing mechanism comprises a fixed roller and a floating roller, the return mechanism comprises an arc-shaped return channel, the arc-shaped return channel is located on the outside of the fixed roller, conveyor chains are arranged at both ends of the arc-shaped return channel, and a scraper plate is arranged between the two conveyor chains; an inclined sliding cleaning roller brush is arranged on the lower side of the screen, a traction rope is connected to the end of the cleaning roller brush, a winding mechanism is arranged at the upper end of the screen, the winding mechanism comprises a connecting frame, a winding gear is rotatably arranged on the connecting frame, a winding wheel is fixed on the winding gear, the traction rope is connected to the winding wheel, and the connecting frame is connected to the telescopic cylinder. The return mechanism and the winding mechanism of the present invention shorten the return path of the coarse material on the screen and also facilitate the cleaning of the screen; the material is fully screened by the buffer convex strip.