85results about How to "Avoid affecting the screening effect" patented technology

The invention provides a double-cage harvester for cyperus esculentus, referring to a farm machine for harvesting the cyperus esculentus, comprising a depth setting wheel, a rotary tillage rake, a clay shoveling plate, a conveying belt, a distributing rotation wheel, a sieving cage, a collecting box, a sieving cage bracket, a frame, wheels and a gear box, wherein the depth setting wheel, the rotary tillage rake and the clay shoveling plate are arranged below the front part of the frame; the conveying belt is arranged on the frame, and the ends of the conveying belt lead to the sieving cage which is arranged at the rear part of the frame; the collecting box is arranged at the rear part of the sieving cage; the sieving cage is divided into two layers, namely the inner sieving cage and the outer sieving cage; the inner sieving cage is arranged in the outer sieving cage and fixed by the bracket; the central shaft of the sieving cage passes through the middle of the inner sieving cage so as to be fixed by the bracket; the rear end in the outer sieving cage is provided with a digging plate; the rear end of the conveying belt is extended into the inner sieving cage and provided with the distributing rotation wheel; the distributing rotation wheel is connected with the rear end wheel of the conveying belt through a belt or chain so as to obtain power. The two-grade sieving action of the dual-layer sieving cage can effectively separate the clay.

The invention relates to the technical field of screening, in particular to pharmaceutical medicine particle screening equipment. The pharmaceutical medicine particle screening equipment comprises a buffering cavity and a screening cavity. wherein a feeding hopper communicating with the buffering cavity is arranged at the upper end of the buffering cavity, the screening cavity is arranged at the lower end of the buffering cavity, and communicates through a discharging hole, and a sieve plate driven by a first driving assembly to move up and down is arranged on the inner side of the screening cavity, a sieve plate is provided with a plurality of sieve holes used for falling of qualified medicine particles, a guide plate driven by a second driving assembly to move up and down is arranged below the sieve plate, a plurality of pounding rods are arranged at the upper end of the guide plate, one pounding rod is located right under one sieve hole, and when the guide plate moves upwards, the pounding rods upwards move into the sieve holes. According to the pharmaceutical medicine particle screening equipment, the design is novel, an effective flow guide effect is achieved through the arranged guide plate, and meanwhile, the plurality of pounding rods arranged on the guide plate are intermittently inserted into the sieve holes in the sieve plate, so that the sieve holes are prevented from being blocked to influence the screening effect.

The invention relates to the technical field of screening machines, in particular to an architectural sandstone screening device which comprises a work chamber. A feeding device is arranged in the middle of the upper end of the work chamber; slide rails and screening devices are symmetrically arranged between the middles of a first clapboard and a second clapboard; U-shaped frames are symmetrically arranged on the front side and the rear side of outer walls of the screening devices; vertical slots matched with the screening devices are symmetrically formed in the first clapboard and the secondclapboard; a collecting frame is arranged on the right side of the lower part of the vertical slot located on the second clapboard; a power device is rotatably connected to one sides, far away from the screening devices, of rotary rods through pin shafts; and a discharge hole is formed in the middle of the lower end of the work chamber. The architectural sandstone screening device provided by theinvention is reasonable in structure design, convenient to use, and capable of improving the sandstone screening efficiency, carefully classifying sandstone, and absorbing powder dust produced duringsandstone screening at the same time, and has high functionality and practicability.

The invention relates to an anti-blocking screening device with a dedusting function and for mineral separation. The anti-blocking screening device with the dedusting function and for the mineral separation comprises a main body, a screen barrel and two supports, and further comprises two dust removal mechanisms and two vibration mechanisms, wherein each vibration mechanism comprises a cam, a connection rod, a moving rod, a moving plate, a limiting ring, a motor, a first spring and a fixed rod, and each dust removal mechanism comprises a connection pipe, a dust removal box, a filter net, an air fan, a seal cover, a handle, two fixed plates and two replacement assemblies, and each replacement assembly comprises a fixed block, a support rod and two replacement units. The anti-blocking screening device with the dedusting function and for the mineral separation can perform up-down shaking operation on mineral aggregate in the screen barrel, prevents the mineral aggregate from blocking the screen barrel so as to prevent the mineral aggregate from influencing screening effect when the screen barrel performs screening work, can perform impurity removal and purification work on dust in the main body through the dust removal mechanisms, and prevents the dust from scattering in all directions so as to prevent the dust from influencing surrounding air environment.

The invention discloses a secondary screening device for almonds. The secondary screening device for almonds comprises a screening box, a storage cone barrel is vertically and fixedly installed in thescreening box, and ribbon type stirring blades are fixedly installed on the surface of a stirring shaft and located inside the storage cone barrel; the left side wall of the screening box is providedwith a feed pipe communicating with the interior of the storage cone barrel; an L-shaped discharge baffle transversely penetrates through the lower portion of the storage cone barrel in a horizontalsliding mode; an inclined storage sloping plate is arranged at the bottom of the screening box; and the side wall of the lower right portion of the screening box extends rightwards to form a dischargepipe. The almonds inside the storage cone barrel are rotationally scattered through the ribbon type stirring blades and prevented from blocking the lower end of the storage cone barrel to cause discharge difficulty, an upper screening plate and a lower screening plate move left and right in a reciprocating mode through rotation of an incomplete gear, the almonds falling to the upper screening plate and the lower screening plate can be evenly spread, the almonds of proper sizes can penetrate through the upper screening plate and the lower screening plate, and the screening efficiency is effectively improved.

A small convenient efficient smashing device comprises a machine body. A feeding hopper is arranged in the middle of the top end of the machine body. A smashing chamber is arranged at the upper end of the machine body. A screening chamber is arranged at the lower end of the machine body. A first discharging hopper is arranged in the middle of the bottom end of the machine body. The left side and the right side of the bottom end of the machine body are each provided with a supporting leg. The small convenient efficient smashing device is high in smashing efficiency and smashing fineness, and multi-grade screening can be carried out on smashed materials; and meanwhile, smashing and screening on the materials are completed, operation is easy, use is convenient, and time and labor are saved.

The invention relates to the technical field of building construction equipment, and discloses an automatic sand sieving machine for building. The automatic sand sieving machine for the building comprises a machine case, a feeding hopper, a quantitative feeding device and a sand sieving device, wherein the sand sieving device comprises a motor, a cam, a sliding plate, a fixed rod and a sieving disk, the sliding plate is connected with a sliding rod, the sliding rod is connected with a first sliding block, a rotation shaft is rotatably connected onto the first sliding block, the rotation shaftis coaxially connected with a gear, the first sliding block is connected with a rack in sliding mode, the rack and the gear are meshed with each other, a second sliding block is connected onto the fixed rod in sliding mode, the second sliding block is fixedly connected with one end of the rack, the rotation shaft is connected with a rotation disk, a vertical rod is hinged with the center of the rotation disk through a spherical hinge, two connection rods are hinged at the lower end of the vertical rod, and the lower ends of the two connection rods are fixedly connected with the sieving disk. The automatic sand sieving machine for the building separates yellow sand from stone through sieving by continuously moving the sieving disk up and down and continuously swinging the sieving disk, andovercomes the problems that single vibration of an existing sand sieving mode causes low sand sieving efficiency and poor sand sieving effect in the prior art.

The invention discloses a sand screening device for municipal road construction. The sand screening device comprises a stirring cavity, a screening cavity, a collecting groove and a motor, wherein thestirring cavity is separated from the screening cavity through a bottom plate, a feeding hopper is arranged at the upper end of the stirring cavity, a motor is arranged on the right side of the feeding hopper, a rotating shaft is fixedly arranged at the output end of the motor, and the rotating shaft penetrates through the upper end of the stirring cavity to extend into the stirring cavity and isconnected with the upper end of the bottom plate in a rotating mode; and a threaded rod is connected to the right side of the upper end of the screening cavity in a rotating mode, the threaded rod positioned on the inner side of the screening cavity is in threaded connection with a movable block, the lower end of the movable block is hinged to one end of a connecting rod, and the other end of theconnecting rod is hinged to a sieve plate. According to the sand screening device, the design is novel; the movable block reciprocates left and right under the action of the threaded rod, so that thesieve plate is driven to swing through the connecting rod 10, and the screening efficiency of the sieve plate is improved; and the movable plate is arranged to prevent sand from dropping from the gapat the left end of the sieve plate, so that the screening quality is improved.

The invention discloses high-efficiency tea leaf screening equipment. The high-efficiency tea leaf screening equipment comprises a base, a vibrating plate, a screening groove and a collecting box; theupper surface of the base is fixedly connected with guide posts; the vibrating plate penetrates through the tops of the guide posts; the vibrating plate is connected with the guide posts in a slidingmanner; the lower surface of the vibrating plate is fixedly connected with a fixed rod; the lower end of the fixed rod is hinged to a screening groove; the lower surface of the vibrating plate is fixedly connected with a screening motor; the upper surface of the vibrating plate is fixedly connected with a two-axis motor; tea leaves to be processed are placed in the screening groove and are driedby utilizing a hot air blower; the screening motor drives the screening groove to swing up and down around the lower end of the fixed rod to raise the tea leaves, which is beneficial to separating impurities in the tea leaves from the tea leaves and improving the screening efficiency; the tea leaves are dispersed in the screening groove by utilizing a partition plate, so that the tea leaves are prevented from being centralized together to affect a screening effect; and the screening groove swing up and down to raise the tea leaves, so that the tea leaves are in full contact with hot air, and the drying effect is improved.

The invention relates to mineral separation anti-blockage screening equipment having the dedusting function. The mineral separation anti-blockage screening equipment comprises a main body, a screeningnet and four support feet and further comprises a dedusting mechanism and a vibrating mechanism. The vibrating mechanism comprises a vibrating block, a beating block, a beating plate, a support shaft, an adjustment rod and a driving assembly. The dedusting mechanism comprises a water tank, an air exhaust assembly and two dedusting assemblies. Each dedusting assembly comprises a connecting pipe, ahose, a connecting box, a suction nozzle, a fixing rod and a power unit. According to the mineral separation anti-blockage screening equipment having the dedusting function, the screening net can vibrate through the vibrating mechanism, and the problem that the screening effect is affected due to the fact that dust on the screening net blocks the screening net is avoided; and by means of the dedusting mechanism, the dedustiong work of the interior of the main body can be conducted, and the problem that the dust is scattered in all directions to affect the air environment is avoided.

The invention discloses an agricultural cereal grain screening device. The agricultural cereal grain screening device comprises an operation box; a motor frame is fixedly mounted at the top of the operation box; a driving motor is inverted on the motor frame; a driving belt wheel is fixedly mounted on the surface of a driving shaft in a sleeving manner; a worm rod is vertically and rotationally arranged on the right side of the driving shaft; a fixed pulley is rotationally arranged at the top in the operation box; a swing plate is rotationally arranged on the inner wall of the right side of the operation box; and an arc limiting support plate slidingly connected with an arc clamping arc plate is fixedly mounted on the inner side wall of the operation box. The agricultural cereal grain screening device is skillful in structure and reasonable in design, achieves a screening effect on cereal grains through clockwise and anticlockwise alternate rotation of a screening semi-spherical groove, prevents blockage of screening holes caused by high centralization of cereal grains, and effectively accelerates the cereal screening speed; and through the screening semi-spherical groove, swing ofthe rotating plate can be realized, so that the speed of the cereal grains falling into the screening semi-spherical groove is slowed down, and influence on the screening effect by excessive accumulation of the cereal grains in the screening semi-spherical groove is prevented.

The invention provides a shell screening device, and belongs to the technical field of shell screening equipment. The shell screening device comprises a device body, a feeding pipe, a filter net, a conveying belt, a guiding mechanism and a weight screening mechanism. An installing cavity is formed in the device body. The feeding pipe is arranged on the top of the device body, and the lower end ofthe feeding pipe communicates with the installing cavity. The filter net is hinged into the installing cavity through a hinge shaft. A vibration motor is fixedly arranged in the installing cavity andfixedly connected with the lower side face of the filter net. The conveying belt is horizontally arranged in the installing cavity, and the left end of the conveying belt is located below the right side edge of the filter net. The guiding mechanism can divide shells on the conveying belt into a plurality of rows, the shells are sequentially moved to the right end of the conveying belt one by one,and the weight screening mechanism can classify the shells moved to the right end of the conveying belt according to the weight. By means of the shell screening device, screening can be conducted according to the weight of the shells, and operation is simple.

The invention discloses a crushing device for coal gangue sorting, and belongs to the field of coal gangue sorting. A crushing device for coal gangue sorting comprises a bottom plate, a crushing mechanism, a screening mechanism, a pushing mechanism, a baffle mechanism and a clamping mechanism. The crushing mechanism is arranged above the bottom plate, the two tooth rollers which synchronously and reversely move are arranged in the crushing mechanism to crush the coal gangue mixture, the screening mechanism is arranged below the box body, and the screening plate which can do reciprocating rectilinear motion is arranged in the screening mechanism. The coal gangue mixture which is not fully crushed is left at the upper end of the sieve plate to realize separation, so that the coal gangue mixture which is not fully crushed is conveniently crushed again subsequently, and the crushing sufficiency is improved; the pushing mechanism is arranged at the upper end of the bottom plate to push out coal gangue mixture which is not fully crushed and left at the upper end of the sieve plate, and the phenomenon that the sieving effect is affected due to the fact that sieve holes in the sieve plate are blocked is avoided.

The invention belongs to the field of agricultural screening and provides an agricultural multi-stage walnut swing screening device, which comprises a motor, a swing frame, a screening tank, a first screening plate, a second screening plate, a third screening plate and a cam. The motor is fixedly arranged on the left side of a vertical plate; the swing frame is welded between end faces of two slide columns; the cam is fixedly arranged at the right end of a rotating shaft and positioned in the swing frame; the screening tank is arranged at upper ends of guide rails through slide grooves; the left end of the first screening plate is welded to the left inner wall of the screening tank; the second screening plate is fixedly arranged at the right lower end of the first screening plate through first bolts; the left end of the third screening plate is fixedly arranged at the right lower end of the second screening plate through second bolts, and the right end of the third screening plate is arranged in a discharging tank. The agricultural multi-stage walnut swing screening device is reasonable in design, and by combination of swing screening and multi-stage screening plate screening, sorting of walnuts according to sizes can be completed in one time, and high screening efficiency is realized.

The invention provides a petroleum drilling fluid screening device. The petroleum drilling fluid screening device comprises a tank, a support and guide plates arranged in the tank. The tank is divided into an upper screening area and a lower fluid collecting area by the guide plates. Vibrating screens are obliquely arranged in the screening area. A stirring device is arranged in the fluid collecting area. Chip outlets are formed in the positions, corresponding to the lower ends of the vibrating screens, of the side wall of the tank. A chip collecting tank corresponding to the chip outlets is arranged on the outer side wall of the tank. A fluid outlet pipe is arranged at the bottom end of the side wall of the tank. The tank is fixedly connected with the supports through elastic components. The petroleum drilling fluid screening device has the advantages that the size is small, the structure is simple, the screening efficiency is high, the screening effect is good, and drilling fluid is effectively prevented from splashing.

The invention provides a vibrating screen for petroleum drilling fluid, which includes a screening box, a liquid collection box arranged at the bottom of the screening box and connected with the screening box, and a bracket provided at the bottom of the liquid collection box; the upper part of the screening box is a Screening area, the lower part is the liquid passing area connected with the screening area, the screening area is a cuboid structure, and the liquid passing area is a downward convex conical structure; the liquid passing area is connected with the liquid collection tank; the screening area is equipped with an inclined The installed vibrating screen, the side wall of the screening box corresponding to the lower end of the vibrating screen is provided with a debris outlet, and the position corresponding to the side wall of the screening box and the debris outlet is provided with a debris collection box. A stirring device is fixed inside the tank, and a liquid outlet pipe connected to the liquid discharge mud pump is provided on the side wall of the liquid collection tank. The invention has the advantages of small volume, simple structure, high screening efficiency and good effect, and effectively prevents drilling fluid from splashing.

The invention discloses household garbage pyrolysis gasification treatment equipment in the technical field of household garbage pyrolysis and gasification treatment. The household garbage pyrolysis gasification treatment equipment comprises a pyrolyzing furnace, the bottom of the pyrolyzing furnace communicates with an air inlet pipe, a fluidized bed is fixedly connected to the inner side wall of the pyrolyzing furnace, and a discharging opening located above the fluidized bed is formed in the right side wall of the pyrolyzing furnace. When household garbage is pyrolyzed every time, a driving motor is used for driving a rotating shaft to rotate, a balancing weight, an arc-shaped rotating plate and an arc-shaped vibration plate are matched to enable a first sieve plate to be tensioned for screening, garbage with different sizes can be separated, and large-particle garbage is located below small-particle garbage and can react with hot air flow in advance. Treated hot air flow continuously rises to treat small-particle garbage, so that the treatment time of large particles is shortened, the treatment efficiency is improved, the household garbage is separated into parts with different sizes, accumulation treatment of a large amount of household garbage is avoided, the pyrolysis efficiency is improved, and generation of toxic and harmful gas is reduced.

The invention relates to screening equipment with a good crushing effect and an anti-blocking function. The screening equipment comprises a main body and four brackets, the main body is internally provided with a crushing mechanism and two unchoking mechanisms, the crushing mechanism comprises a closed assembly and two crushing assemblies, each crushing assembly comprises a first motor, a wire spool, a moving plate, a crushing unit and two driving units, each unchoking mechanism comprises a third motor, a half gear, a moving frame, a vibrating rod and two racks. According to the screening equipment with the good crushing effect and the anti-blocking function, through the crushing mechanism, materials can be crushed, large materials are prevented from blocking on a filter screen to affect the screening effect, through the unchoking mechanisms, the filter screen can be unchoked, and the filter screen is prevented from being blocked to affect the screening effect.

The invention discloses a building sand grading and screening device. The building sand grading and screening device comprises a filtering box; multiple layers of screen plates are obliquely arrangedin the filtering box from top to bottom; beating mechanisms are arranged between the adjacent screen plates; the beating mechanisms comprise L-shaped frames, levers and rubber balls; horizontal partsof the L-shaped frames are perpendicularly connected to the external side wall of the filtering box; vertical parts of the L-shaped frames are hinged to the middle parts of the levers; one ends of thelevers run through the external wall of the filtering box and extend into the filtering box; the rubber ball is arranged at one end, positioned in the filtering box, of the lever; a material inlet isformed in the position, close to the high edge of the uppermost screen plate in the filtering box, at the upper end of the filtering box; a hot air pipeline is arranged at the part, close to the material inlet, on the external side wall of the filtering box; a slide plate is obliquely arranged at the internal bottom end of the filtering box; a vibration motor is arranged under the filtering box;and the vibration motor is connected with the bottom end of the filtering box through a leaf spring. The building sand grading and screening device has the advantages of simple and novel structure, good screening effect, low manufacturing cost and high working efficiency.

The invention discloses an edge adding type vibrating screen which comprises a vibrating screen frame, an electrostatic precipitator, a fixed support and a base. The upper end of the vibrating screenframe is provided with an upper end cover, a feeding opening is formed in the top of the upper end cover, a first screen net and a second screen net are arranged inside the vibrating screen frame, thefirst screen net is arranged over the second screen net, a coarse material outlet is formed in the position, opposite to the first screen net, of the side face of one side of the vibrating screen frame, a medium material outlet is formed in the position, relative horizontal to the second screen net, of the side face of the other side of the vibrating screen frame, a thin material outlet is formedin position, under the coarse material outlet, of the outer side face of the vibrating screen frame, a dust sucking pipe is connected to one side of the upper end cover, the other end of the dust sucking pipe is connected with the electrostatic precipitator arranged on one side of the vibrating screen frame, and an ash hopper is installed at the bottom of the electrostatic precipitator. By meansof the edge adding type vibrating screen, automatic dust removal can be achieved, the practicability is high, and the screening effect is good.

The invention relates to the technical field of bio-organic fertilizer processing equipment and discloses efficient energy-saving bio-organic fertilizer screening equipment comprising a screening box.A funnel is fixedly connected to the top of the screening box. A feed inlet is fixedly connected to the middle of the top of the funnel. Baffles are fixedly connected to both the two sides of the inner wall of the funnel. The two sides of the inner wall of the top of the screening box are each fixedly connected with a locating seat. The two locating seats are fixedly connected through a locatingplate. A screening net is clamped in the middle of the inner side of the locating plate. The two sides of the top of the locating plate are each fixedly connected with a connecting column, and the tops of the two connecting columns are each fixedly connected with a shocking device. The two shocking devices are clamped to inner cavities in the two sides of the top of the screening box correspondingly. According to the efficient energy-saving bio-organic fertilizer screening equipment, when a user puts bio-organic fertilizer into the funnel, through matched use of the two baffles, the bio-organic fertilizer can be scattered, thus later screening work can be more convenient, and then screening treatment is conducted through the screening net.

The invention discloses an intermittent feeding type sand sieving device for building. The intermittent feeding type sand sieving device comprises a storage cavity and a sieving cavity and is characterized in that the storage cavity is arranged at the upper end of the left side of the sieving cavity and communicated with the sieving cavity through a discharge outlet, a transverse plate is fixedlymounted in the sieving cavity, the inner side of the transverse plate is provided with a circular cavity, a first eccentric wheel is arranged on the inner side of the circular cavity, push rods are symmetrically arranged at the left end and the right end of the first eccentric wheel, fixing parts are mounted at the lower ends of the push rods, the lower ends of the fixing parts are hinged to one ends of the connecting rods, and the other ends of the connecting rods are hinged to the upper end of a sieve plate. The intermittent feeding type sand sieving device has the advantages that the deviceis novel in design, a second eccentric wheel rotates to drive a retaining plate to move vertically in a reciprocating manner to intermittently open the discharge outlet so as to achieve intermittentfeeding, and accordingly the sieving effect can be effectively prevented from being affected by the fact that excessive sand enters the sieving cavity at the same time; the push rods move leftwards and rightwards to drive the sieve plate to swing in a reciprocating manner through the connecting rods, and accordingly the sieving efficiency of the sieve plate is increased, and high practicality is achieved.

The invention discloses a screening and conveying device for solid garbage treatment. The screening and conveying device comprises a conveying device body. The position, close to the rear end, of theouter surface of the top end of the conveying device body is fixedly provided with a hopper. The bottom end of the hopper is fixedly provided with a feeding pipe. A clamping groove is formed in one side of the feeding pipe. The screening and conveying device for solid garbage treatment is provided with a nano screen drum, a conveying belt, a first motor and a second motor, garbage screen surface adhesion can be prevented to a certain degree while solid garbage is screened, meanwhile, a screen can be more conveniently cleaned, screened-out waste can be well conveyed out, and the situation thatthe waste is accumulated, and the screen screening effect is influenced is avoided; and low-speed rotation and high-speed rotation can be effectively combined, different rotation speeds can be used for different kinds of solid garbage, more targeted transportation can be achieved, certain limitation is avoided, and better usage prospects are brought.

The invention relates to screening equipment, in particular to equipment for rapidly screening tea seeds. The equipment for rapidly screening the tea seeds can automatically screen the tea seeds and has a good screening effect. The equipment for rapidly screening the tea seeds comprises a bottom plate, a motor underframe, a servo motor, a discharging mechanism and a filtering separation mechanism, wherein the motor underframe is arranged on one side of the top of the bottom plate; the servo motor is arranged at the top of the motor underframe; the discharging mechanism is arranged on one side of the top of the bottom plate; and the filtering separation mechanism is arranged on the discharging mechanism. Through cooperation of the discharging mechanism and the filtering separation mechanism, the tea seeds which are just picked and discharged can be automatically screened, and the working efficiency of people is improved; and through a pushing mechanism, the intermittent feeding function of the tea seeds can be automatically achieved, the situation that the screening effect is affected by excessive tea seeds on a filter screen is avoided, and therefore the screening effect is improved.

The invention discloses a rubber powder vibrating screen which is mainly composed of a rack, a screen box, a screen net and a vibration motor, wherein the screen box is arranged on the rack; the vibration motor is connected with the screen box, and the screen box is driven by the vibration motor to make horizontal straight reciprocating motions; the screen box comprises a vibration cavity and a discharging cavity; the screen net is fixed in the vibration cavity and divides the vibration cavity into at least two layers, namely a feeding layer which is located above the screen net and a discharging layer which is located below the screen net; the upper part of the discharging cavity is connected with the lower part of one side wall in the movement direction of the vibration cavity, and the upper part of the discharging cavity is communicated with the discharging layer of the vibration cavity; and a screen box feeding opening is formed at the upper part of the vibration cavity, and a screen box discharging opening is formed at the lower part of the discharging cavity. The rubber powder vibrating screen can effectively prevent materials from being stacked and plugged in the screen box, and has the characteristics of high screening efficiency and good screening effect.

The invention discloses a green brick mud manufacturing device. The green brick mud manufacturing device comprises a smashing unit, a screening unit, a grinding unit, a conveying unit, a stirring unit and a power unit; a discharging port of the smashing unit corresponds to a feeding port of the screening unit; a discharging port of the screening unit corresponds to a feeding port of the grinding unit; a discharging port of the grinding unit corresponds to a feeding port of the conveying unit; a discharging port of the conveying unit corresponds to a feeding port of the stirring unit; the smashing unit, the screening unit, the grinding unit and the conveying unit are sequentially arranged from top to bottom; and the power output end of the power unit is connected with the power input ends of the smashing unit, the screening unit, the grinding unit, the conveying unit and the stirring unit.

The invention discloses a screening device for calcium powder production. The screening device comprises a shell, the top of the shell is provided with a feeding bin and a negative pressure suction port, the bottom of the feeding bin is in a funnel shape with larger upper portion and smaller lower portion, the lower portion of the feeding bin is provided with a screening mechanism, the bottom of the feeding bin is provided with a discharging mechanism used for discharging calcium powder which does not reach the standard, the screening mechanism comprises a plurality of discharging holes formed in the side face of the lower portion of the feeding bin, each discharging hole is rotationally provided with a screening barrel communicating with the discharging hole through a slewing bearing, screening holes are formed in the screening barrels, spiral blades are arranged on the inner walls of the screening barrels, the upper ends of the spiral blades extend into the feeding bin, blocking plates are arranged at the lower ends of the screening barrels, and fixing shafts are arranged at the bottoms of the blocking plates. According to the screening device for calcium powder production, the multiple synchronously-rotating screening barrels are adopted for screening calcium powder, meanwhile, the screened calcium powder is collected in a centralized mode through negative pressure provided by the negative pressure suction opening, and the calcium powder screening efficiency is greatly improved.

The invention belongs to the technical field of fertilizer processing, and particularly relates to an intelligent screening device for fertilizers. The intelligent screening device comprises a crushing cylinder and a screening cylinder; the crushing cylinder is fixedly connected to the top end of the screening cylinder through a cushioning supporting assembly; an inner cavity of the crushing cylinder is communicated with an inner cavity of the screening cylinder through a blanking pipe; the end face of the top of the crushing cylinder is fixedly connected with a discharging hopper; the inner cavity of the crushing cylinder is provided with a crushing assembly; the bottom of the crushing cylinder is provided with a power output assembly; the power output assembly is connected with the crushing assembly through a transmission assembly; a mounting cavity is arranged in the screening cylinder; and a motor II is fixedly mounted in the mounting cavity. Through cooperation of the motor II, a rotating shaft II, a semi-ring gear, a straight gear, a connecting shaft and a torsional spring, a filter plate I repeatedly rotates by a small angle to achieve low-frequency shaking, the fertilizer screening speed is increased, and the situation that the fertilizer is accumulated on the first filter plate, blockage is caused, and then the screening effect is affected is avoided.

The invention discloses a full-automatic grain screening device. The full-automatic grain screening device comprises a screening bin, and a feeding hopper is fixedly installed at the top of the screening bin; a second motor is fixedly installed on the right side of the screening bin, a reciprocating plate is movably connected to the right portion of an inner cavity of the screening bin, a conveying belt is fixedly installed on the left side of the reciprocating plate, a moving frame is fixedly connected to the left side wall of the conveying belt, and a spring is fixedly connected to the leftside of the moving frame; a screen is fixedly connected between the lower portion of the inner wall of the left side of the inner cavity of the screening bin and the spring, and the screen is arrangedto be in a folded wave shape; and a discharging opening is fixedly formed in the bottom of the screening bin, a discharging pipe is fixedly installed on the left side of the screening bin, and the discharging pipe is located on the upper side of the screen. The screening device is simple in structure, convenient to use, practical and capable of achieving scattered discharging and enhancing the screening effect.