197results about How to "Guaranteed screening effect" patented technology

The invention relates to the field of coating quality detection, in particular to a workpiece coating quality detection method and system based on machine vision, and the method comprises the steps: screening real-time images to obtain an optimal detection image; identifying and marking a defect area in the optimal detection image; the screening method comprises the steps that gradient change values of all pixel points in a real-time image relative to all pixel points in a standard image are calculated, the gradient change values are grouped, a histogram is constructed, the horizontal axis in the histogram represents the gradient change values, and the longitudinal axis represents the number of connected domains; calculating the proportion of each group of gradient change values; calculating a mean value and a standard deviation of all proportions, constructing a normal distribution model, determining a threshold range according to the mean value and the standard deviation, and determining an abnormal change value; and taking at least one real-time image of which the gradient change value is equal to the abnormal change value in the real-time images as an optimal detection image. The method and the device have the effect of effectively screening the detection images before the defects in the detection images are identified.

The utility model discloses a lead-antimony alloy sintering powder screening device which comprises two supports arranged in parallel, the top ends of the two supports are fixedly connected with the two ends of a supporting column, the bottom end of the middle of the supporting column is fixedly connected with a scraping plate, and a screening frame is movably arranged at the bottom of the scraping plate. The two ends of the bottom of the screen frame are slidably connected with lifting assemblies correspondingly, the lifting assemblies are fixedly connected with the opposite ends of rotating shafts correspondingly, the rotating shafts are rotationally connected with the top of the support, the other ends of the rotating shafts are fixedly connected with transverse moving assemblies correspondingly, and the transverse moving assemblies are hinged to one end of the screen frame. The lifting assembly drives the screen frame to do reciprocating lifting work, then powder is screened, meanwhile, the transverse moving assembly drives the screen frame to do reciprocating left-right movement, the screen frame makes contact with the bottom end of the scraping plate during matched lifting, the screen frame is scraped and moved, the situation that screen holes are blocked by the powder is avoided, and the screening effect is guaranteed.

The utility model relates to the technical field of screening devices, in particular to a coal mine screening device with a grading screening function, which comprises a mounting rack, a fixed frame is mounted on the inner side of the mounting rack, and the fixed frame is arranged on the inner side of the mounting rack; when coal is screened, a motor is started, under the action of a cam, the coal on the top of the upper fixing plate and the gravity of the coal, the two fixing plates are made to vibrate in a reciprocating mode, a first through hole and a second through hole are made to vibrate up and down in a reciprocating mode to screen the coal, and in the up-and-down reciprocating movement process of the first through hole and the second through hole, the coal screening efficiency is improved. By arranging the cleaning mechanism, the inner wall of the first through hole can be cleaned through a first cleaning ring, and the inner wall of the second through hole can be cleaned through a second cleaning ring, so that part of substances adhering to the inner walls of the first through hole and the second through hole can be scraped; and the risk that materials adhere to the inner walls of the first through holes and the inner walls of the second through holes to cause blockage is avoided, and therefore the coal screening effect is guaranteed.

The invention discloses a method for removing mica from granite machine-made sand, which comprises the following steps: S1, screening and grading semi-finished machine-made sand to obtain coarse sand and fine sand; s2, the coarse sand is subjected to winnowing to remove flaky mica, and a heavy product and a light product are obtained; s3, fine mica with weak magnetism is removed from the fine sand through high-gradient wet magnetic separation, and a non-magnetic product and a magnetic product are obtained; s4, combining the heavy product with the non-magnetic product to obtain the mica content lt; and 2% of full-size machine-made sand. According to the method and system for removing mica from granite machine-made sand, the coarse material and the fine material are screened firstly, then through coarse material winnowing and fine material magnetic separation, the mica content in the whole size fraction of the machine-made sand can be effectively reduced, and the requirement that the mica content is smaller than or equal to 2% in the national standard and the industrial standard is met; and the mica is rubbed before screening, so that the mica is fully separated from sand and gravel materials, adhesion is avoided, subsequent screening can be facilitated, and the screening effect and the quality of screened finished products are guaranteed.

The invention relates to the technical field of material conveying, in particular to a plastic particle finished product conveyor with a screening function, which comprises a conveying hose, a shaftless spiral auger, a discharge bin, a discharge pipe and the like, a discharging bin is mounted on the conveying hose; a rotating motor is arranged on the discharging bin; a shaftless spiral auger is arranged in the conveying hose in a penetrating mode, one side of the shaftless spiral auger is rotationally connected with the conveying hose, and the other side of the shaftless spiral auger is fixedly connected with the output end of a rotating motor on the discharging bin in a penetrating mode. A feeding hole is formed in the left part of the conveying hose; and the lower part of the discharging bin is communicated with a discharging pipe. Through the action that the electric sliding ring slides on the connecting rod repeatedly, plastic particle finished products located on the outer side of the extrusion rod are continuously extruded in the process that the extrusion rod retracts and restores to the original shape repeatedly, and the screening effect of the plastic particle finished products in the conveying process is guaranteed.

The utility model discloses a water-based UV coating rescreening device, which belongs to the technical field of screening devices and comprises a bottom plate, a convenient material taking assembly is arranged at the upper end of the bottom plate, a screening box is arranged at the upper end of the convenient material taking assembly, a screening plate fixing assembly is arranged on one side of the screening box, and a feeding hopper is arranged at the upper end of the screening box. Supporting columns are symmetrically arranged on one side of the screening box, and a height adjusting assembly is arranged on one sides of the supporting columns and corresponds to the screening box. Through the arrangement of the convenient material taking assembly, the material taking box can be rapidly and stably taken out from the bottom end of the screening box for use, manpower resources are saved, labor cost is reduced, meanwhile, the material taking box can be accurately installed, it is guaranteed that the butt joint of a material receiving opening is accurate, the situation of material leakage is prevented, and the use cost of equipment is saved; and a sieve plate fixing assembly is arranged, so that a sieve plate can be conveniently taken out and cleaned, the use convenience of the equipment is improved, and the screening effect of the water-based UV coating is guaranteed.

The utility model belongs to the technical field of compound fertilizer production, and particularly relates to a screening device for compound fertilizer production. Supporting columns are welded to the four corners of the bottom of the base correspondingly, mounting bases are fixedly connected to the two sides of the top of the base correspondingly, each hidden claw mounting base is rotationally provided with a rotating roller in a matched mode through a rotating shaft, a first motor is mounted on one mounting base, and the output end of the first motor is connected with the end of one rotating shaft. The two rotating rollers are matched and rotationally provided with a drum screen, during screening, a first motor is started, the rotating rollers drive the drum screen to rotate, and small particles can fall into a small particle collecting tank through screen holes; the high-pressure component and the knocking component are matched together, so that particles in the screen holes can completely fall off, the screen holes in the drum screen can be prevented from being blocked while a compound fertilizer is screened, and the screening effect of the drum screen is guaranteed.

The utility model discloses a stone mill flour grading sieving device which comprises a sieving box, the upper side wall and the right side wall of the sieving box are not covered, opposite horizontal inserting grooves are formed in the front inner wall and the rear inner wall of the sieving box, a plurality of sets of inserting grooves are evenly formed in the vertical direction of the sieving box, the right ends of the inserting grooves extend out of the sieving box, and the right ends of the inserting grooves extend out of the sieving box. And a screen is inserted in front of the front and back opposite inserting grooves, a telescopic rod is arranged at the bottom of the screening box, a spring is arranged in the telescopic rod, a vibration motor is arranged on the side wall of the screening box, and a detachable baffle is arranged on the right side of the screening box. The discharging device is convenient to discharge and clean.

The invention discloses a waste residue recovery device capable of achieving multiple screening, and relates to the technical field of steel machining, the waste residue recovery device comprises a base, at least four supporting frames are fixedly installed at the top of the base, every two supporting frames form a group, and the two groups of supporting frames are symmetrically arranged on the base; a multi-screening assembly is arranged at the top of the supporting frame; through the arrangement of the sliding grooves and the sliding plates, one set of sliding plates slide in the sliding grooves, then the stop rods in the sliding plates fixedly connected with the first sliding blocks are moved away from the position over the screen plate, only the stop rods parallel to the first lead screws shield the screen plate, and therefore waste residues larger in size can pass through screen holes formed by the stop rods and the screen plate; and in addition, the mode that the blocking rods horizontally move above the screening plate to adjust the size of the screening holes is achieved, and the situation that the screening holes are blocked by the large waste residues can be effectively avoided.

The present invention belongs to the technical field of mechanical processing equipment, and in particular relates to a shot blasting machine, comprising: a shot blasting machine body, wherein a feeding port and a discharging port are arranged on both sides of the shot blasting machine body, and a conveying mechanism is arranged in the shot blasting machine body; a shot blasting mechanism, wherein the shot blasting mechanism comprises a shot blasting nozzle; and further comprising: a shot blasting agent baffle, wherein the shot blasting agent baffle is arranged below the shot blasting nozzle; a shot blasting agent acceleration belt, wherein the shot blasting agent acceleration belt is arranged on the right side of the shot blasting agent baffle; and a shot blasting recovery system, wherein the shot blasting recovery system is arranged in the shot blasting machine body and is located below the conveying mechanism; wherein a shot blasting output channel is formed between the shot blasting agent baffle and the shot blasting agent acceleration belt, and the present invention can meet the situation where a higher speed is required in the shot blasting operation, thereby improving the practicality of the shot blasting machine, and at the same time, the shot blasting can be effectively recycled and utilized through the arrangement of the shot blasting recovery system, thereby improving the effect of subsequent shot blasting operations.

The present invention relates to the field of screening, and specifically provides a multi-stage ore screening device, which aims to solve the problem of reduced filtering efficiency and poor screening effect caused by filter blockage in current ore screening devices. The multi-stage ore screening device of the present invention includes a device housing and a reset component, a bending component, and a first filter plate group and a second filter plate group arranged up and down connected to the device housing. The device housing is formed with a feed chamber and a plurality of screening chambers connected to the feed chamber. The reset component can provide a pulling force to straighten the first filter plate group and the second filter plate group. The first filter plate group and the second filter plate group are provided with a bending component on their sides. The bending component can overcome the pulling force provided by the reset component to the first filter plate group or the second filter plate group and fold the two adjacent first filter plates or the second filter plates to one side, so as to clean the filter plates by beating and vibrating, avoid clogging the filter holes with ores, and ensure the screening effect.

The invention discloses mechanical equipment capable of fully screening materials, which belongs to the field of material screening and comprises a screening base, a screening box is fixedly mounted on the screening base, a first driving motor is fixedly mounted on the outer surface of the screening box, and the output end of the first driving motor is fixedly sleeved with a coupler. Through the arrangement of the screen, the first driving motor, the shaft rod and the rotating plate, when the feeding speed is larger than the screening speed, materials to be stacked can be pushed away by the rotating plate in the rotating process of the rotating plate, it is guaranteed that the materials existing on the screen cannot be stacked too much, and therefore it is guaranteed that the materials are continuously screened through the screen; according to the feeding device, the influence of material accumulation on the normal screening efficiency of the screen is reduced, the screening effect is guaranteed, if too many materials are accumulated on the screen, many pushed materials exist between every two adjacent rotating plates, the materials can be observed from feeding more conveniently, the feeding speed can be immediately reduced, and normal operation of equipment is guaranteed.

The utility model discloses a grain fine powder grinder which comprises a shell, the top of the shell is provided with a smashing mechanism, the smashing mechanism comprises a motor A, a rotating shaft A, smashing blades, a grating plate, an electric telescopic rod, a push plate, a rubber rod and a vibration motor, and a grinding mechanism is arranged below the smashing mechanism. A cleaning mechanism is arranged below the grinding mechanism; a motor A drives a rotating shaft A to rotate, so that a plurality of smashing blades are driven to rotate, grain raw materials are smashed for the first time under filtering of a grating plate, an electric telescopic rod extends to drive a push plate to move, the push plate drives a plurality of rubber rods to move along the grating plate, and under vibration of a vibration motor, the grating plate is dredged, and a filter screen is prevented from being blocked; and a motor B drives a grinding roller to rotate through a rotating rod to grind the primarily crushed grain particles, and meanwhile, the rotating rod drives a scraping plate to scrape along the sieve plate and scrape away the adhered grains, so that the screening effect of the sieve plate is ensured.

The utility model relates to the technical field of sand screening equipment, in particular to drum-type classified sand screening equipment for constructional engineering, which comprises a mounting frame, a fixed frame is fixedly connected to the inner side of the mounting frame, a feed hopper is mounted on one side of the mounting frame, a screening drum is rotatably connected to the inner wall of the fixed frame, and the inner wall of the mounting frame is rotatably connected with the screening drum. When the sand is classified and screened by the screening barrel, a moving plate drives a beating plate to continuously reciprocate up and down to beat the screening barrel through the arrangement of a cleaning mechanism under the action of a cam, so that the screening barrel is vibrated favorably, and the sand in meshes is loosened and falls off; and when the moving plate reciprocates up and down, under the action of a connecting rod, a sliding block and a fixed block, a rotating rod can drive a cleaning brush to rotate in a reciprocating mode to clean the flapped screening barrel, sand in meshes falls off, and therefore the meshes of the screening barrel are prevented from being blocked, and the screening effect of the screening barrel is guaranteed.

The invention relates to the technical field of material drying, in particular to a solid preparation spray granulation dryer which comprises a drying cylinder with an opening in the lower end, and a supporting device is connected to the outer surface of the drying cylinder; the device further comprises a discharging device, the discharging device is connected to the position, close to the lower end, of the inner wall of the drying cylinder, and the discharging device comprises a conical frame fixedly connected with the lower end of the inner wall of the drying cylinder through a plurality of connecting columns evenly distributed in the circumferential direction. The blanking device is matched with the opening device, dry material particles can be continuously screened, the collected material particles do not need to be screened again, the screened material particles can be collected in a centralized mode, and the material particle collecting efficiency is effectively improved.

The utility model belongs to the technical field of sand and gravel screening and separating, and particularly relates to a water conservancy construction sand and gravel separating device which comprises a base. Two long supporting columns are fixedly connected to one side of the top of the base, two short supporting columns are fixedly connected to the other side of the top of the base, the two short supporting columns and the two long supporting columns are matched and fixedly connected with a supporting frame, a screening roller is arranged in the supporting frame, and one end of the circumferential face of the screening roller is sleeved with an annular rack. The other end of the circumferential face of the screening roller is sleeved with two limiting rings, two first motors are installed on one side of the supporting frame, the output ends of the two first motors are both connected with rotating rods, the other ends of the rotating rods are rotationally installed on the side wall, away from the first motors, of the supporting frame, and one ends of the rotating rods are sleeved with gears. The gear is meshed with the annular rack; according to the multi-stage stone screening device, multi-stage screening operation can be achieved, then screening separation of large-particle stones, small-particle stones and sand can be rapidly achieved, and meanwhile the screening effect is guaranteed.

The utility model provides an intelligent nano-pesticide nanocapsule production device, which belongs to the technical field of nano-pesticide production and comprises a processing base fixedly connected with a processing cylinder through a fixing support. And the rapid screening assembly comprises a limiting sliding rod fixedly connected to the inner wall of the machining barrel, a bottom plate is slidably connected to the limiting sliding rod, a screening frame is arranged on the bottom plate, and a screening driving component is arranged on the outer wall of the machining barrel. The screening frame can be driven to move in a reciprocating mode so that raw material particles can be fully screened in a vibrating mode through the screening frame, the production screening operation efficiency of nano pesticides can be improved, the scraping plate can be synchronously driven to rotate relative to the screening frame, the situation that the raw material particles of the large specification size block the micropore screen is avoided, and the screening efficiency is improved. And the screening effect of the nano pesticide particles and the production quality of the nano capsule are ensured.

The invention discloses an automatic bale breaker and a bale breaking method thereof, and relates to the technical field of bale breakers. According to the technical scheme, the automatic bale breaker comprises a device body, two transmission mechanisms are symmetrically arranged at the top of the device body, transmission plates are fixedly connected to the transmission mechanisms, air cylinders are arranged at the upper ends of the transmission plates, and vibration plates are fixedly connected to the bottoms of the air cylinders; four vibrating mechanisms are arranged on the lower portion of the vibrating plate, and a grabbing plate is fixedly connected to the bottoms of the vibrating mechanisms, the grabbing plate can be driven to vibrate up and down through the vibrating mechanisms arranged on the vibrating plate, so that part of materials remaining in a packaging bag can be separated from the interior of the bag, and the separation rate of the packaging bag and the materials is effectively increased; when falling materials pass through the filter sieve, the screening mechanism can drive the filter sieve to move in a reciprocating mode, so that particle materials clamped in sieve holes of the filter sieve can be shaken off from the holes, and the screening effect of the filter sieve is guaranteed.

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.

The utility model provides a clean barium sulfate powder sorting machine. The cleaning type barium sulfate powder sorting machine comprises a processing cylinder; the screen mesh is fixedly mounted in the processing cylinder; the protective cover is arranged at the top of the processing cylinder; the motor is fixedly mounted at the top of the protective cover; the rotating shaft is rotatably mounted on the protective cover, the rotating shaft is fixedly connected with an output shaft of the motor, and stirring blades can be mounted on the rotating shaft; and the material spreading assembly is arranged at the bottom of the rotating shaft. The cleaning type barium sulfate powder sorting machine has the advantages that the screening effect of barium sulfate powder can be guaranteed, and meanwhile pollution caused by flying dust formed by powder flying is effectively prevented.

The utility model discloses a corn threshing and screening device which comprises a main body module and a feeding module. The main body module comprises a box body, a vibration motor installed on the outer side face of the box body, a screening piece obliquely fixed to the inner wall of the box body, a bottom plate obliquely fixed to the inner wall of the box body and located below the screening piece, and an air inlet piece installed at the bottom end of the box body and communicating with an inner cavity of the box body. The flow guide pipe is fixed to the box body and communicates with the space above a bottom plate and the space below the bottom plate in the box body, the impurity outlet is fixed to one side of the box body, the top end of the impurity outlet is flush with the screening part, the discharging plate is installed on one side of the impurity outlet, the chipping outlet is installed on the box body and communicates with an inner cavity of the box body, and the box body is used for installing other assemblies. Meanwhile, a sealed space is formed, external dust and impurities are prevented from falling into corn kernels during screening, the supporting legs are symmetrically fixed to the bottom end of the box body, the stability of the box body is guaranteed, and the corn threshing and screening device has the advantages of being good in screening effect and high in practicability.

The utility model relates to a catalyst processing grinding mechanism which comprises a grinding box, a collecting box is slidably connected to the interior of the grinding box, a fixed bin is fixedly connected to the right side of the grinding box, a first motor is fixedly installed on the top of the grinding box, and an output shaft of the first motor is fixedly connected with a rotary grinding disc. A fixed grinding disc is fixedly connected into the grinding box, an adjusting assembly is arranged on the grinding box, a screening assembly is arranged on the fixed bin, and the screening assembly comprises a third motor fixedly installed on the inner bottom wall of the fixed bin. According to the catalyst processing and grinding mechanism, by arranging the screening assembly, after a catalyst is ground, a third motor is started to drive a screening box to move left and right in a reciprocating mode, the qualified catalyst falls into a collecting box, the effect of screening the catalyst is achieved, and the catalyst with large particles can be left in the screening box; and the screening effect on the catalyst is guaranteed, and a user can use the device conveniently.

The utility model discloses a nickel-based alloy powder screening device with a cleaning structure, and relates to the technical field of nickel-based alloy powder processing, the nickel-based alloy powder screening device comprises a shell, a base, a screening roller, an upper screening mechanism, a lower screening mechanism, a trough and a discharge port, the shell is fixed above the base, the screening roller is installed on the top of the inner side of the shell through a hanging bracket, and the upper screening mechanism and the lower screening mechanism are arranged on the base. A rolling inner container is installed in the screening roller, and the screening roller and the rolling inner container are arranged to be of a cylinder structure with the same central axis. According to the nickel-based alloy powder screening device with the cleaning structure, the screening effect is guaranteed by arranging the screening roller, the upper screening mechanism and the lower screening mechanism, and while nickel-based alloy powder is rotationally screened through the rolling inner container, a brush at the top of the rolling inner container cleans the rotating rolling inner container; and the up-down screening mechanism integrally moves up and down in a left-right circulation mode to conduct screening, residual powder needing to be cleaned can be accumulated together while screening holes are prevented from being blocked, and therefore screening and cleaning are conducted at the same time.

The vibrating screen for grain processing comprises a base and a vibrating screen body, an installation frame is fixedly installed at the top of the vibrating screen body, a U-shaped plate is fixedly installed at the top of the base, the side wall of the U-shaped plate is fixedly connected with the side wall of the vibrating screen body, a communication opening is formed in the U-shaped plate in a penetrating mode, and the communication opening is communicated with the installation frame. The vibrating screen comprises a vibrating screen body, a U-shaped plate is arranged on the vibrating screen body, sliding grooves are formed in the opposite inner side walls of the U-shaped plate, a blocking frame is fixedly installed on the vibrating screen body, an adjusting mechanism is arranged on the blocking frame, a placing mechanism is arranged between the two sliding grooves, the side wall of the placing mechanism abuts against the side wall of the U-shaped plate, and a plurality of guide wheels are rotationally connected to an installation frame and the U-shaped plate. And a pulling mechanism is arranged at the inner top of the mounting frame. The grain screening device is reasonable in structural design, when grains are screened, an operator does not need to shovel up the grains and place the grains on a vibrating screen, and physical exhaustion of the operator is greatly reduced.

The utility model discloses a traditional chinese medicine decoction piece screening equipment, including the box, be provided with the screening cylinder in the box, the screening cylinder is set up obliquely, is provided with a plurality of screen holes in the screening cylinder periphery, and the low end of screening cylinder is the discharge end, and the other end of screening cylinder is the feeding end, and the feeding end of screening cylinder is provided with the feeding pipeline, and the feeding pipeline is through the screening cylinder and is with screening cylinder rotation cooperation, and the support assembly that provides the support of screening cylinder is installed in the box, and the feeding pipeline is fixedly connected with support assembly, and the motion component that drives the rotation of screening cylinder is installed on the feeding pipeline, the top wall of box is fixedly connected with the feeding hopper, and the feeding hopper is linked with the feeding pipeline, and the bottom wall of box is provided with the conveyer belt. The utility model discloses simple structure, convenient operation can be to traditional chinese medicine decoction piece and carry out the full screening.

The invention provides a thin oil lubrication excitation vibrating screen, and relates to the technical field of vibrating screens. The control mechanism is mounted at the top of the screening mechanism; the crushing mechanism is mounted at the top of the screening mechanism and is used for preventing material adhesion; the feeding mechanism is installed on the screening mechanism and located above the control mechanism. The pushing mechanisms are mounted on the front side and the rear side of the screening mechanism, and the pushing mechanisms are located below the crushing mechanism; the number of the control impellers is two, and the two control impellers are fixedly installed outside the two circular installation shafts A and located inside the two feeding frames. The mounting bracket is fixedly mounted on the front side of the rack; the control impeller on the left side is suitable for first-time screening, the control impeller on the right side is suitable for second-time secondary screening, and the screening efficiency of materials is improved; the problem that the efficiency is not high when materials are re-screened is solved.

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 discloses a screening device for feed production, which comprises a crushing and screening box for screening feed, and further comprises an oscillation motor which is detachably connected to the back of the crushing and screening box and is used for preventing the feed from being stuck, and a supporting plate which can be adjusted in a lifting manner is arranged at the bottom of the crushing and screening box. Through cooperative use of a mounting frame, bolts, a foam block and a vibration motor, the vibration motor is mounted in the mounting frame on the back of the crushing and screening box, the foam block is connected through the bolts to fix the vibration motor, mounting and dismounting of the vibration motor are facilitated, and under the action of the vibration motor, a screen frame in the crushing and screening box is driven to vibrate; and therefore, the effect of preventing the feed similar to the screen frame meshes in size from being clamped on the surface of the screen frame is achieved, and the screening effect on the feed is guaranteed.

The utility model relates to the technical field of industrial processing, and particularly discloses a screen roller adjusting mechanism for a crushing device and the crushing device thereof, the screen roller adjusting mechanism comprises a supporting part and an adjusting part, the supporting part consists of a supporting rib and a supporting plate, and the adjusting part comprises a wedge block and a slideway. The wedge block is fixed to the side wall of one side of the crusher shell through the sliding way and can reciprocate along the sliding way, and the inclined surface of the wedge block makes contact with the bearing seat. The supporting ribs support the bottom of the adjusting part at the two ends, and the supporting plate is located on one side of the adjusting part. The adjusting bolt is located on the supporting plate through a hole matched with the wedge block, makes contact with the wedge block and is used for adjusting the position of the wedge block. The adjusting bolt holes are arranged in pairs so that the position of the wedge block can be adjusted more accurately. The mechanism is further provided with scale marks so as to determine the distance between the screen roller and the hammer head. The face, opposite to the wedge block, below the bearing seat is an inclined face and makes contact with the inclined face of the wedge block. Two ends of the bearing seat are symmetrically arranged so as to simultaneously adjust the position of the wedge block.