121results about How to "Guaranteed screening efficiency" patented technology

The invention relates to the technical field of graphite screening, in particular to a screening device for graphite production, which comprises a screening box, a dispersing and blocking assembly, a driving assembly, a drawer assembly, a screen, a moving assembly, a brushing assembly, a first knocking assembly, a second telescopic piece, a second knocking assembly, a first linkage assembly and a second linkage assembly. According to the invention, the impact force of graphite on the screen mesh can be reduced so as to reduce the damage of the graphite on the screen mesh, the service life of the screen mesh is prolonged, meanwhile, the graphite can be uniformly dispersed on the screen mesh so as to improve the utilization rate of meshes in the screen mesh, the screen mesh can be brushed, the screen mesh is prevented from being blocked after being used for a long time, the screening efficiency is ensured, and the service life of the screen mesh is prolonged. And the screen cloth can be inclined, so that graphite on the screen cloth can be rapidly discharged, the subsequent graphite screening effect is improved, the screen cloth can be rapidly replaced, and the working efficiency is improved.

The invention provides a belt type pellet roasting distribution control method and related equipment, and the method comprises the steps: determining the running speed of a wide belt based on the target material layer thickness, the bottom material thickness, the running speed, the trolley width and the material bulk density of a roasting machine trolley, and the material layer thickness and the material loading width of the wide belt; the material layer thickness of the wide belt is associated with the preset feeding layer thickness of the roller screen machine; and the running speed of the first belt and the running speed of the shuttle-type distributor are determined based on the material weight increased by the first belt in unit time, the material layer thickness of the first belt, the material loading width, the material pile density, the material layer thickness of the wide belt and the material loading width of the shuttle-type distributor. The screening efficiency of the roller screening machine is guaranteed through the preset thickness of the feeding layer of the roller screening machine, the thickness of the wide belt material layer is associated with the thickness of the feeding layer of the roller screening machine, the thickness of the wide belt material layer serves as a control core, operation parameters, matched with production requirements, of the first belt, the wide belt and the shuttle type distributor are calculated, and uniform material distribution control over the belt type roasting machine is achieved.

The invention relates to the field of rice grading, in particular to a rice grading device and method.The rice grading device comprises a grading bin, a screening assembly movably arranged in the grading bin, a first guiding assembly fixedly installed between two first fixing rings, a second guiding assembly movably arranged in a second fixing ring and an adjusting assembly fixedly installed on the surface of the other end of the grading bin. According to the rice screening device, the multiple round rods define the cylindrical screening barrel, when the screening barrel rotates, the round rods rotate, rice clamped between the two round rods is discharged, when the rice is screened, the screening barrel is cleaned, the situation that the rice blocks the screening barrel is avoided, and the screening efficiency of the screening barrel is kept; and through angle adjustment of the multiple scrapers, the moving speed of rice in the screening barrel is controlled, the rice screening time is prolonged, the situation that part of small-particle rice is wrapped by large-particle rice and synchronously discharged along with the large-particle rice is avoided, and the rice screening and grading precision is improved.

The utility model relates to the field of screening equipment, in particular to a fine chemical engineering vibrating screening machine which comprises two stabilizing seats and two supporting plates, and the supporting plates are fixedly mounted on the stabilizing seats. The turnover mechanism is installed on the supporting plates on the two sides, a supporting groove is formed in the turnover mechanism, and a groove and a through opening for materials to pass through are formed in the supporting groove; the screening mechanism is mounted in the supporting groove; the top plate is fixedly connected with the supporting plates on the two sides and arranged on the upper sides of the supporting plates, and a feeding mechanism is fixedly arranged on the top plate; the two ends of the reinforcing plate are fixedly connected with the supporting plates on the two sides, the reinforcing plate is arranged on the lower sides of the supporting plates, and a collecting box used for storing screened materials is placed on the reinforcing plate. According to the fine chemical engineering vibrating screening machine, material screening work can be conducted, large materials can be conveniently guided out through overturning, meanwhile, the material adding speed can be controlled, the screening efficiency is guaranteed, meanwhile, equipment blockage is avoided, operation is easy, and practicability is high.

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 utility model discloses a discharging structure for a modified starch crushing device, which is arranged at the bottom of a crushing tank and comprises a box body, the top of the box body is provided with a box body feed port, the box body feed port is communicated with the bottom of the crushing tank, an inner cavity of the box body is provided with a sieve plate, and the sieve plate is communicated with the bottom of the crushing tank. And two symmetrical sliding rods are welded to the two sides of the sieve plate correspondingly, the sliding rods penetrate through the box body to the outside of the box body, and a rotating disc is rotationally connected to the back face of an inner cavity of the box body. According to the utility model, the motor is started to drive the sieve plate to slide left and right through the turntable and the connecting rod, the screening effect of the sieve plate is enhanced through the spring, non-caked modified starch falls out of the inner cavity of the box body through the discharge hole of the box body, and caked modified starch enters the inner cavity of the scattering device to be scattered; therefore, the caked modified starch can be scattered through the discharging structure, the caked modified starch is prevented from being directly packaged, and the product quality is guaranteed.

According to the vibrating screen, a first-layer screening mechanism and a second-layer screening mechanism are installed on the top and the upper portion of a rack in parallel up and down, each of the first-layer screening mechanism and the second-layer screening mechanism comprises a screen frame, an upper screen, a lower screen and an adjusting assembly, a sliding groove is formed in the middle of each screen frame, and the screen frames are installed on the rack; the upper screen is fixed at the upper end of the screen frame; the lower screen is installed in the sliding groove. The adjusting assembly comprises a driving motor, a lead screw and a moving nut. The driving motor drives the moving nut through the lead screw to drive the lower screen to move relative to the upper screen. The first blowing mechanism and the second blowing mechanism are the same in structure and are arranged below the first-layer screening mechanism and the second-layer screening mechanism respectively, and a plurality of air nozzles are evenly arranged on the portions, corresponding to the screening nets, of the screening mechanisms. According to the vibrating screen, the size of the screening hole diameter can be flexibly adjusted according to needs, and the screening requirements of materials with various particle sizes can be met through one vibrating screen.

The utility model discloses a granule screening device and relates to pharmaceutical equipment. Comprising a base, foot stands are installed at the lower end of the base, vibration springs are installed at the upper end of the base, a metal shell is installed at the upper ends of the vibration springs, a feeding hopper and a first motor are installed at the upper end of the metal shell, the first motor is connected with a rotating rod, and fan blades are installed on the rotating rod. A bottom plate is arranged below the screen plate, rail shells are arranged between the screen plate and the bottom plate, second motors are installed on the inner sides of the rail shells and connected with second threaded rods, the surfaces of the second threaded rods are in threaded connection with sliding blocks, a connecting block is arranged between the two rail shells, a draught fan is installed at the lower end of the connecting block, and an air bellow is installed at the upper end of the connecting block. According to the utility model, the sieve pores are washed for multiple times, the problem that the sieve pores are blocked is solved, particles are fed in batches, material accumulation is avoided, and the screening efficiency is improved.

The present invention relates to the field of graphite screening technology, and specifically to a screening device for graphite production, including: a screening box, a dispersing and blocking component, a driving component, a drawer component, a screen, a moving component, a cleaning component, a first knocking component, a second telescopic member, a second knocking component, a first linkage component, and a second linkage component. The present invention can reduce the impact force of graphite on the screen to reduce the damage caused by graphite to the screen, and increase the service life of the screen. At the same time, the graphite can be evenly dispersed on the screen to increase the utilization rate of the mesh holes on the screen, and the screen can be cleaned to prevent the screen from being blocked after long-term use, thereby ensuring the screening efficiency, and the screen can be tilted so that the graphite on the screen can be quickly discharged, thereby improving the screening effect of subsequent graphite, and the screen can also be quickly replaced to improve work efficiency.

The utility model relates to the technical field of agricultural product screening devices, and discloses an agricultural product primary processing screening device convenient to clean, which comprises a shell I, a screen is arranged in an inner cavity of the shell I, a vibration motor is fixedly mounted at the bottom of the screen, and fillets are fixedly mounted at the bottom of the screen and located on the left side and the right side of the vibration motor respectively. Grooves are formed in the bottoms of the fillets, sliding grooves are symmetrically formed in the left portion and the right portion of an inner cavity of the first shell, cavities are formed in the bottoms of the sliding grooves, electromagnets are fixedly installed at the bottoms of inner cavities of the cavities, springs are fixedly installed at the positions, located on the left sides and the right sides of the electromagnets, of the bottoms of the inner cavities of the cavities correspondingly, and movable plates are fixedly installed at the telescopic ends of the springs; and through clamping of an electromagnet power-on and power-off adjusting limiting block and a groove, the screen mesh is convenient to disassemble and assemble, so that the screening mechanism is cleaned, a large amount of time is prevented from being consumed, the working efficiency of the device is prevented from being influenced, maintenance of the device is facilitated, the maintenance efficiency is improved, and the failure rate of the device is reduced.

The utility model discloses a tea tender shoot screening device, relates to the technical field of tea screening, and is mainly used for solving the problems that screening holes of existing tea screening equipment are easily blocked by tea, only one-time screening can be completed, and the screening effect is poor. According to the main structure, the device comprises a winnowing box and a screening box communicated with the winnowing box, an L-shaped corner bracket is fixedly arranged on the inner wall of the screening box, and bristles are arranged on the side, close to a screening basket, of the corner bracket; a collecting box capable of being drawn out from one side of the winnowing box is arranged in the winnowing box, a fan is further arranged on one side of the winnowing box, and the output end of the fan is communicated with the winnowing box through an air guide pipe. The utility model provides a tea tender shoot screening device which can overcome the defects that screening holes of existing tea screening equipment are prone to being blocked by tea, only one-time screening can be achieved, and the screening effect is poor.

The utility model discloses building construction sand screening equipment, and relates to the technical field of building construction, the building construction sand screening equipment comprises a frame, the two sides of the frame are fixedly connected with supporting legs, the building construction sand screening equipment is provided with a screen, a first winding roller and a second winding roller, and the screen moves towards the interior of a first winding groove; according to the sand-gravel cleaning device, the screen mesh drives large sand-gravel on the surface to move towards the interior of a first winding groove, the sand-gravel falls into a material guiding box, then the large sand-gravel falls into a cart through the material guiding box, when a row of screen holes in the screen mesh move to the position below a cleaning column, a first servo motor and a second servo motor stop working, and the first servo motor and the second servo motor stop working; and the telescopic end of the electric telescopic rod pushes a moving plate to move downwards, so that the moving plate pushes a cleaning column to be inserted into a row of screen holes, sand blocked in the screen holes can be cleaned out, and the sand screening efficiency of the screen is guaranteed.

The present invention relates to the technical field of positioning pin sleeve processing, and discloses an automatic material distribution mechanism for positioning pin sleeves, comprising a feeding mechanism, a positioning pin and a pin sleeve. A screening mechanism capable of screening out vertically positioned pin sleeves is provided on one side of the feeding mechanism, and a pin sleeve assembling mechanism capable of assembling the positioning pin and the pin sleeve is provided on one side of the screening mechanism. The beneficial effect of the present invention compared with the prior art lies in that: by setting a plurality of hoppers and connecting them with auxiliary material distribution slots to carry the pin sleeves, a plurality of auxiliary material distribution slots can work simultaneously to store the screened pin sleeves when screening the pin sleeves, that is, when a pin sleeve gap appears on the main material distribution slot, the auxiliary material distribution slot selection blocks can be rotated in turn to allow the pin sleeves on each auxiliary material distribution slot to be quickly and sequentially transported to the main material distribution slot, which can avoid the situation where the assembly of the pin sleeves and the positioning pins is stagnant under high production demand, affecting the assembly output speed of the positioning pins and the pin sleeves, thereby ensuring production efficiency.

The utility model discloses an aluminum ash gradient utilization production device which comprises a smashing shell, a feeding port used for feeding aluminum ash is formed in the top of the smashing shell, and a discharging port used for discharging the aluminum ash is formed in the bottom of the side face of the smashing shell. The inner wall of the crushing shell is fixedly connected with a sieve plate for screening crushed aluminum ash slag; the two crushing mechanisms are used for gradient utilization and crushing of the aluminum ash and are symmetrically mounted on the crushing shell; and the dredging mechanism comprises a dredging assembly used for dredging sieve meshes of the sieve plate. The servo motor drives the cam to rotate and enables the cam to extrude the mounting plate with different radiuses, so that the mounting plate can continuously move up and down under the action of the elastic force of the sleeve spring, screen meshes of the screen plate can be effectively dredged through the dredging rod, and the screening efficiency of crushed aluminum ash slag is guaranteed.

The utility model discloses a vibrating screen which comprises a first-stage vibrating screen, a second-stage vibrating screen is installed on one side of the first-stage vibrating screen, screen frames are installed in screen drums of the first-stage vibrating screen and the second-stage vibrating screen, and an ultrasonic vibrator is installed on the lower side of each screen frame. The ultrasonic vibrating screen has the beneficial effects that the ultrasonic vibrators are externally arranged on the outer sides of the first-stage vibrating screen and the second-stage vibrating screen, and the temperature sensing alarm mechanism is arranged at the ultrasonic transduction head at one end of each ultrasonic vibrator by virtue of the clamping mechanism; a bimetal temperature sensing contact piece in the temperature sensing alarm mechanism is bent and deformed after being heated and is in contact with a conductive iron sheet, so that a circuit of the audible and visual alarm is switched on, the audible and visual alarm gives an alarm to remind a worker of blockage in the screen frame, the worker can conveniently clean the screen frame in time, and the screening efficiency of the vibrating screen on metal powder is ensured.

The ore sorting device for mining comprises a sorting box, a screening mechanism is arranged at the top of the sorting box, the screening mechanism comprises a fixing plate, a discharging channel, an electric telescopic rod A, a cross beam, an electric telescopic rod B, a lifting frame and an ejector rod, the ejector rod corresponds to the discharging channel in position, a filtering mechanism is arranged at the bottom of the sorting box, and the filtering mechanism is arranged on the top of the sorting box. A cleaning mechanism is arranged on one side of the sorting box; an electric telescopic rod A is arranged, the electric telescopic rod A drives a cross beam to move along a track and align to each row of discharging channels, an electric telescopic rod B is arranged, the electric telescopic rod B drives a lifting frame to ascend and descend along the inner wall of the cross beam, and therefore a plurality of ejector rods are driven to move up and down, the ejector rods dredge the discharging channels and eject a mine clamped in the discharging channels out, and the mine discharging efficiency is improved. And therefore, the multiple discharging channels are dredged, shutdown cleaning is avoided, and the ore separation efficiency is guaranteed.

The invention provides a new energy power station planning method and system, and the method comprises the steps: obtaining the static characteristics of a plurality of candidate points, the static characteristics including the seismic activity frequency, the altitude, the gradient and the underground water burial depth; calculating a static abnormal score of each candidate point based on the static features of the candidate points, and performing a first round of screening on all the candidate points according to the static abnormal scores to obtain remaining candidate points; obtaining dynamic characteristics of each residual candidate point, wherein the dynamic characteristics comprise wind speed, sunlight intensity, environment temperature, environment humidity and precipitation; and performing a second round of screening on all the remaining candidate points based on the dynamic feature of each remaining candidate point and the static abnormal score of each candidate point to obtain a final point location. According to the method, multi-dimensional quantitative evaluation of new energy power station site selection is realized through a static and dynamic dual screening and clustering optimization mechanism, and site selection scientificity and engineering reliability are remarkably improved.

This utility model discloses a mixing and grading device for high-purity graphite processing, relating to the field of high-purity graphite processing technology. It includes a base, a screening tank on top of the base, a tank door on one side of the screening tank, and two mounting rails on both the inner wall of the screening tank and the tank door. Two mounting shells are installed inside the screening tank. This utility model uses a vibration motor to vibrate the screening tank. The graphite material on the top screen is gradually seeped downwards through the mesh openings due to the vibration. Larger particles of graphite are trapped on the top screen, while smaller particles are trapped on the second screen. Powdered graphite material on the screens seeps through the mesh openings of both screens into a collection frame for collection and storage. Removing the mounting shells from the mounting rails allows for cleaning of the screens, ensuring no graphite material clogs the mesh openings and guaranteeing efficient subsequent screening.

The application relates to the field of blueberry screening, and discloses a blueberry sorting device which comprises a workbench, a material distributing device, a screening mechanism and a conveying mechanism. A plurality of parallel guide grooves are formed on the workbench. The material distributing device is installed at one end of the workbench and comprises a storage hopper and a sliding plate connected to the bottom of the storage hopper. A discharge port aligned with each guide groove is installed in the sliding plate. The workbench under the guide grooves is hollow. The screening mechanism is installed in the workbench in the length direction of the guide grooves in sequence. The screening mechanism drives the blueberries away from the material distributing device. A dropping port is formed on the workbench under the guide grooves. The conveying mechanism is located below the dropping port. The screening mechanism is arranged on the workbench, different sizes of blueberries can be dropped from different dropping ports, and the damage of the blueberries caused by mutual extrusion and extrusion with the screen holes during screening can be avoided, so that the waste rate of the blueberries is greatly reduced, and the economic benefits of the blueberries are effectively ensured.

The invention relates to the technical field of metal surface treatment, in particular to a particle shot blasting machine for harmonic flexible gear surface strengthening, which comprises a machine body, a closed cavity is arranged on the machine body, an operation table for placing a to-be-processed flexible gear is rotatably arranged in the cavity, and a spray gun, a circulating filtering and screening module and a first driving part are arranged in the cavity; the machine body is further provided with an electrical control module and a three-dimensional driving module. Through cooperative use of the electric control module, the three-dimensional driving module and the first driving part, shot blasting machining of the harmonic flexible gear at different angles is achieved, then sprayed shot blasting is recycled through the circulating filtering and screening module, impurities are filtered out, then the shot blasting is supplied to the spray gun in a circulating mode, and therefore recycling of the shot blasting is achieved, and the service life of the harmonic flexible gear is prolonged. The situation that particle pellets leak in the form of dust is relieved, and meanwhile the implanting effect of residual stress on the surface of the flexible gear is guaranteed.

The utility model discloses a mine rubble dry method sand making line which comprises a crusher, a stock bin, a vibrating screen support, a vibrating screen, a powder concentrator and a humidifier, the stock bin is arranged below a discharge port of the crusher and can store crushed mine rubble materials, a discharge port of the stock bin is arranged at the bottom end of a first conveying belt, and the first conveying belt is arranged on the bottom end of the first conveying belt. The high end of the first conveying belt is arranged on a feeding hopper of the vibrating screen, and the vibrating screen is obliquely arranged on the vibrating screen support. An undersize material discharge port of the vibrating screen is connected with the powder concentrator, a discharge port of the powder concentrator is connected to the humidifier through a second conveying belt, and the humidifier outputs building sand. The sand making machine can be used for continuously crushing and screening dried rubble materials, outputting building materials and efficiently making sand.

The utility model discloses a PVC granule cooling vibration sieve relates to PVC granule processing technical field, the utility model discloses a cooling sieve box and controller, the controller fixed mounting is at the cooling sieve box front surface, and the both opposite surfaces of cooling sieve box all are established with two opening grooves, and the both opening grooves between sliding installation have the sliding board, and two sliding boards both ends extend to the outside of cooling sieve box through the opening groove, and the both sliding boards upper surfaces all are established with the installation groove, and the both installation grooves inside all are installed with the screening net, and the cooling sieve box one surface is installed with two mounting sleeves through bolt, and the position of two mounting sleeves corresponds with the position of two sliding boards. The utility model discloses through sliding board, return spring and eccentric wheel structure, make two sliding boards and screening net move back and forth fast in horizontal direction, realize the transverse vibration of screening net, and when the accumulation of PVC granule can be dispersed screening through the fast transverse vibration, guarantee the screening efficiency of device.

The utility model relates to screening device technical field especially relates to a kind of steel fibre screening machine.Its technical scheme includes: receiving hopper, connecting cover, electric push rod and support cover, the support cover is provided on receiving hopper upper end outer wall, the support cover outer wall is equipped with the fixed plate of circular array distribution, the support cover upper end outer wall is provided with connecting cover, the connecting cover lower end outer wall is equipped with the inlay block of circular array distribution, the connecting cover inner wall one side is equipped with screening board, the connecting cover inner wall one side lower end is equipped with electric push rod, the electric push rod upper end outer wall is equipped with motor body, the motor body upper end outer wall is provided with support disc, the support disc outer wall is equipped with the top plate of circular array distribution, by setting electric push rod, motor body and top plate, reached the effect of cleaning screening hole, guarantee the cleanness inside screening hole, guarantee the screening efficiency of workpiece through screening hole.

The utility model provides a biomass particle screening device which relates to the technical field of biomass particles and comprises a base, rotating seats are symmetrically and fixedly connected to the top of the base, a screening drum is rotatably connected between the inner surfaces of the two rotating seats, a first gear is fixedly connected to the outer surface of one side of the screening drum, and a second gear is fixedly connected to the outer surface of the other side of the screening drum. And the outer surface of one rotating seat is fixedly connected with a motor, the output end of the motor is fixedly connected with a second gear, and an auxiliary assembly is arranged between the tops of the two rotating seats. In the screening process and the rotating process of a first gear, a transmission gear can be driven to rotate, so that a connecting rod and a cam rotate along two connecting bases, a push block is pushed in a reciprocating mode, and under the action of a spring and a sliding rod, a knocking block is driven to move up and down in a reciprocating mode to knock a screen drum in a reciprocating mode; biomass particles blocked in meshes of the screen drum are knocked off, and the screening efficiency is guaranteed.

The application belongs to the technical field of quartz sand processing, in particular to a fine crushing and multi-stage purification process for preparing ultra-high-purity quartz sand, which comprises a machine body, a fixed frame is fixedly connected to the upper surface of the machine body, a feeding port is formed in the fixed frame, a first motor is arranged below the machine body, a crushing roller is drivingly connected to the output end of the first motor, auxiliary plates are fixedly connected to the inner wall of the feeding port on both sides, tooth gears are fixedly connected to one side of the auxiliary plates and staggered with the tooth gears on the circumferential surface of the crushing roller, the auxiliary plates are used for assisting the crushing roller to crush quartz sand, a purification cavity is fixedly connected to the middle of the machine body, and a sieve plate is elastically connected in the purification cavity, through the hooking assembly and the blockage cleaning assembly, the problem that the existing screening is blocked and the screening efficiency is reduced is solved, and the problem that the falling is slow during the screening process is solved.

The utility model discloses a building cement powder screening device which comprises a main body module and a discharging module, and the discharging module is used for feeding cement powder to a screen. Comprising a discharging pipe movably arranged above a machine body, a hopper fixed to the top end of the discharging pipe, rolling wheels symmetrically installed on the two sides of the discharging pipe, a feeding piece installed on the discharging pipe and stretching into an inner cavity of the discharging pipe, driving pieces symmetrically installed on the two sides of the machine body and a connecting plate with one end fixed to the discharging pipe and the other end connected to the driving pieces in a sleeving mode. According to the building cement powder screening device, the discharging pipe is used for conveying cement powder, the hopper is fixed to the top end of the discharging pipe, communicates with the discharging pipe and is used for storing the cement powder needing to be screened, and the rolling wheels are tightly attached to the top end of the machine body, so that the discharging pipe can move conveniently, and the stability of the discharging pipe in the moving process is guaranteed. The feeding device has the advantages of high screen utilization rate and feeding speed control.

The utility model relates to the technical field of elastomer sieve plates, and discloses a thermoplastic elastomer sieve plate which comprises an installation frame, the inner surfaces of the left side and the right side of the installation frame are fixedly connected with the same sieve plate through reset springs, and sieve holes communicated with the back face of the sieve plate are formed in the front face of the sieve plate. A cleaning plate located on the front face of the screen plate is fixedly connected to the front face of the mounting frame. By arranging the reset spring, the sieve plate can move irregularly due to impact force in the screening process, and the effect of effectively improving the screening efficiency and guaranteeing the normal screening efficiency is achieved through the irregular movement of the sieve plate. By arranging a cleaning plate and a cleaning strip, the effect that the cleaning strip rotates to clean the surface near the screen holes when the screen plate moves is achieved, and then the effect that screened objects are effectively prevented from being adhered to the surface of the screen plate is achieved by automatically cleaning the position near the screen holes in time, so that the position near the screen holes is cleaned in time through irregular movement of the screen plate; and the effect of improving the screening efficiency and quality is achieved.

The utility model discloses a screening device for fertilizer production, which comprises a box body, the top of the box body is fixedly connected with a hopper, the bottom of the box body is fixedly connected with a material pipe, a screening unit is arranged in the box body, the interior of the box body is also fixedly connected with a shell and a channel, and the interior of the shell is communicated with the interior of the hopper through the channel. The end, close to the shell, of the channel is higher than the end, away from the shell, of the channel, a transferring piece is arranged in the shell, and a smashing piece is arranged in the channel. The screening unit, the transferring piece, the crushing piece and the like are used in cooperation, in the process that raw materials are screened through the screening unit, large particles can be transferred through the transferring piece, the raw materials are crushed through the crushing piece in the transferring process, and then screening operation can be conducted again; therefore, the granularity of the raw materials is ensured to be within a proper range.

The invention belongs to the technical field of dust removal and environmental protection, and particularly relates to a dust removal device for pipeline cleaning, which comprises an electrostatic dust collector, one side of the electrostatic dust collector is fixedly connected with a splitter plate, the splitter plate is communicated with the electrostatic dust collector, and one end of the splitter plate far away from the electrostatic dust collector is fixedly connected with an air delivery pipe. The air conveying pipe is communicated with the splitter plate, an air outlet is formed in the other side of the electrostatic dust collector, a filter screen is fixedly connected to the side, close to the splitter plate, in the electrostatic dust collector, and a cleaning assembly is arranged between the filter screen and the inner wall, close to the splitter plate, of the electrostatic dust collector; through reciprocating motion of the cleaning plate, particles attached to the surface of the filter screen are cleaned, the situation that the efficiency of the filter screen for screening large-particle matter is reduced due to the fact that the particles on the surface of the filter screen adhere to the surface of the filter screen is avoided, the screening efficiency of the filter screen is guaranteed, the time for taking out, cleaning and replacing the filter screen is delayed, and the dust removal cost is reduced.

This utility model relates to the field of plastic bucket production technology, specifically a raw material screening machine for plastic bucket production. It includes: a machine body, comprising a vibrating screener with a screening disc on its surface; and a uniform feeding mechanism, including a fixing rod fixedly connected to the surface of the vibrating screener. This utility model, through the connection between the fixing rod and the feeding hopper, allows the raw materials for plastic bucket production to be evenly fed into the hopper. The connection between the cross-shaped fixing frame and the anti-clogging cone prevents clogging. The connection between the drive motor and the scraper allows the drive motor to rotate the scraper, preventing raw materials from adhering to the surface of the anti-clogging cone. The connection between the protective box and the drive motor allows the drive motor to rotate the rotating roller. The connection between the rotating roller and the dividing plate allows the raw materials to be evenly grouped and fed into the machine, thus improving screening efficiency.