71results about How to "Guaranteed screening quality" patented technology

The invention discloses a multistage and multistep screening machine used for short-pedicel aconite root seeds. The multistage and multistep screening machine comprises a winnowing box, a screening box and a damping base plate. The winnowing box and the screening box are arranged at the top end of the damping base plate. Multiple supporting legs are evenly arranged at the bottom end of the dampingbase plate. A feeding hole is formed in the top end of the winnowing box. A first slag discharging pipe is connected to the top of the left side end of the winnowing box in a communication manner. The right side wall of an inner cavity of the winnowing box is fixedly connected with a gas spraying device. A first screening net is arranged at the middle portion of the inner cavity of the winnowingbox. Supporting plates are arranged on the left side wall and the right side wall of an inner cavity of the screening box. A second screening net is arranged at the top ends of the two supporting plates. The bottom end of the screening box communicates with a discharging hole in a communication manner. By means of the multistage and multistep screening machine used for short-pedicel aconite root seeds, the gas spraying device is used for winnowing the seeds, and stem leaves and shriveled seed impurities in the seeds are removed; and the first screening net is arranged for screening fine solidparticle impurities, the second screening net is arranged for conducting large particle impurity screening, rounds of screening are conducted step by step and are matched, and it is ensured that the impurities of the seeds are completely removed.

The invention discloses a multi-stage screening device, which relates to the technical field of traditional Chinese medicine processing equipment. The invention includes a sieve hopper. The sieve hopper includes a primary screening mechanism and a secondary screening mechanism. A reciprocating rolling assembly is arranged above the primary screening mechanism. The rolling assembly includes a pressing roller and a moving assembly. A load-bearing plate parallel to the feeding screen is arranged above the feeding screen. The moving assembly includes a moving bracket and a driving cylinder. The moving bracket includes a horizontal connecting plate fixedly connected to the piston rod of the driving cylinder. And the two mounting frames symmetrically arranged on the lower surface of the horizontal connecting plate, two grooves corresponding to the two mounting frames are dug on the load-bearing plate, the ends of the two mounting frames are respectively connected to the rotating shaft through the two grooves, and the pressure roller is sleeved on the On the rotating shaft, the powder of the present invention passes through the three-stage screening of the feeding screen, the secondary screen and the third screen in order to ensure the screening quality of the powder, and through rolling and vibration, the screening and circulation of the powder are ensured. , which improves the screening efficiency.

The invention discloses an efficient sand screening machine used for buildings. The efficient sand screening machine sequentially comprises a feeding mechanism, a sand screening groove, a sand hopperand a tilting cart according to the screening process of sand. The feeding mechanism is located on the upstream portion of the sand screening groove. The sand hopper is located below the sand screening groove and further communicates with the sand screening groove. The tilting cart is located below the sand hopper. The feeding mechanism comprises a supporting plate, a sand conveying groove, a first screw rod and a feeding drive motor used for driving the sand conveying groove to move in the length direction of the supporting plate. The sand conveying groove is located in the upper side of thesupporting plate. The side wall, close to the sand screening groove, of the side walls of the sand conveying groove is opened. The supporting plate is obliquely arranged. The lower end of the supporting plate is fixed to the ground, and the upper end of the supporting plate is located above the sand screening groove. According to the efficient sand screening machine used for the buildings, the labor intensity is low, the screening efficiency of the sand is high, the sand can be prevented from blocking screen holes, impurities like stone blocked into the screen holes can be removed, the particle size of the screened sand can be adjusted at any time, and the screening efficiency and screening quality are guaranteed.

The present invention discloses a bill and coin eccentric wheel screening device which comprises a frame, a power mechanism, a driving mechanism which comprises a transmission shaft and an eccentric shaft, a screening mechanism which is arranged on the frame and comprises a guide rail and a screener arranged on the guide rail, and a screening net which is arranged in an inclined way, wherein one end of the transmission shaft is connected to the power mechanism, the other end is provided with the eccentric shaft, the other end of the eccentric shaft is fixedly arranged on the screener to drive the screener to move back and forth along the guide rail, the upper end of the screening net is arranged on the screener, and the lower end is slidingly arranged on a guide shaft. A pure manual operation can be substituted by the bill and coin eccentric wheel screening device, the screening quality is ensured, the operator disease incidence is reduced, the classification efficiency banknotes and coins is improved, the design is compact and clever, and the device is simple, practical, convenient and safe.

The invention discloses a recycling treatment system for building cement blocks, and relates to the technical field of building construction. The recycling treatment system comprises a bottom plate, abox body fixedly connected to one side of the top of the bottom plate through supporting legs and a fixing frame fixedly connected to the other side of the top of the bottom plate, wherein a supporting plate is fixedly connected between the tops of the two sides of the inner wall of the box body. According to the recycling treatment system for the building cement blocks, the cement blocks are broken in advance through a breaking knife at the bottom of a breaking plate so that cement fragments can be peeled off the surface of a steel bar, then an electromagnetic sucker is electrified to attract the steel bar so that the attracted steel bar can be conveyed into a receiving box to be collected, consequently, the steel bar is rapidly separated from the cement blocks, and then a filter plate is pushed and can screen the fragments through vibration by matching with the elastic restoring force of a steel bar spring in the process that the cement blocks are crushed and screened, so that the screening efficiency is improved, and good conditions are created for the subsequent recycling work of the cement fragments.

The invention relates to a vibrating screen with an eccentric screen mesh. The vibrating screen comprises a frame, an eccentric screen plate, a cam assembly, and a limiting part, wherein an upper endof the frame is provided with a feeding port, and the other end is provided with a discharging port; the eccentric screen plate comprises a screen plate and a first rotating shaft; the sieve plate isrotatably mounted on the frame through the first rotating shaft; the first rotating shaft is disposed near one end of the screen plate; one end of the screen plate close to the first rotating shaft isa feeding end and located below the feeding port, and the other end is a discharge end facing the discharge port; the screen plate is provided with a screen mesh; the cam assembly comprises a rotation driving device, a cam and a second rotating shaft; the cam is rotatably mounted under the screen plate through the second rotating shaft; the rotation driving device is drivingly connected to the second rotating shaft to drive the cam to rotate; an outer peripheral surface of the cam abuts against the lower end surface of the screen plate; and the limiting member is disposed on the vibrating screen for limiting the turning of the screen plate. According to the vibrating screen with the eccentric screen mesh, the screen plate alternately screens upper and lower layers of fertilizer to ensurescreening quality and improves the screening efficiency.

The invention relates to grain machinery, in particular to a combined cleaning sieve used for grain deep-processing enterprises and multistep sorting before grain warehousing. The combined cleaning device is composed of a sieve box, a grain cleaner and a chain-type brush plate mechanism, the grain cleaner is arranged on the upper portion of the sieve box, the chain-type brush plate mechanism is composed of a driving shaft, a driven shaft, a chain, a brush rod, a brush rod rail and a brush plate combined member and driven independently by a motor, the brush rod is fixed on two chains and driven by the same to be in circulating motion, and in order to prevent vibration of the brush rod during running, two ends of the brush rod are limited in the rail during running. The combined cleaning device has the advantages that the combined cleaning device is compact in structure, high in sorting efficiency, high in yield, stable and reliable in running, low in noise and little in environment pollution and is energy-saving emission-reducing efficient grain sorting equipment.

The invention relates to a microsphere separation method and a screening system, which are suitable for screening and separating pellets. In the method, a stator plate and a rotor plate are used to form a narrow slit; the impulse stream is injected from the bottom of the narrow slit, and under the disturbing action of periodical starting and stopping of the stream, the microspheres are driven to disperse and pass through the narrow slit are prevented from blocking the narrow slit; and the width of the narrow slit is regulated to realize the screening of the microspheres with different diameters. The system comprises a narrow slit unit, a narrow slit setting and measuring unit, a microsphere disturbance device, a lifting device and a data gathering and controlling unit. The invention has the advantages that the narrow slit is used for screening the microspheres so as to enhance the screening efficiency of the microspheres; the impulse stream method is adopted to fully disperse the microspheres to pass through the narrow slit so as to ensure the screening quality of the microspheres; a high-precision worktable is used to drive the rotor plate so as to ensure the screening precision of the microspheres; and the whole system is controlled by a computer software interface, so that the modification of different kinds of parameter is visible and easy, and the operation is easy.

The invention discloses a two-way authentication system of a player and a projector for digital movies mobile playing. The hardware of the system is authentication modules installed in the player and the projector, wherein, the authentication module comprises a random number generator, an encryption module, a decryption module and a comparator; the authentication modules operate as follows by combining software in the system: the random number generator in the authentication module in the player generates random numbers at intervals, transfers the random numbers to the encryption module to be encrypted and then sends the data to the projector; the authentication module in the projector receives the data encrypted by the player via a video interface, the decryption module decrypts the data and then transfers the decrypted data back to the player, after the player receives the data, the comparator in the authentication module judges whether the decrypted data are consistent with the data sent before and transmits the comparison results to the player for further processing; the projector also adopts the same way to carry out authentication with the player. The system is high in information security, easy to realize, low in cost and suitable for wide popularization.

The invention discloses efficient screening equipment provided with magnetic bars for rice processing. The efficient screening equipment comprises a base, a screening chamber and a material receiving bin; support legs are arranged at the lower end of the base; the upper end of the base is connected with the screening chamber through support columns; the screening chamber is internally provided with a screening cage; connecting heads are arranged on the screening cage; a screw feeder is arranged in the screening cage; a driven belt pulley is arranged on a right rotating shaft, and is connected with a driving belt wheel through a belt; the driving belt wheel is arranged on a motor; the right end of the right rotating shaft is connected with a feeding hopper; the left end of a left rotating shaft is connected with an impurity discharge port; a plurality of baffles are arranged below the screening cage; discharge hoppers are arranged at the lower ends of the baffles respectively; and a sucking pump is arranged on the left side of the upper surface of the screening chamber and is connected with a dedusting pipe. The efficient screening equipment is simple in structure and convenient to use, the screening cage can screen different rice grains by being provided with filter screens at different screening levels, and the screening quality is ensured.

The invention relates to the technical field of flour processing, in particular to a flour screening machine for making pastries. The flour screening machine comprises a working cover, a grinding cylinder and a grinding cover, wherein a conveying pipe is vertically arranged at the upper side of the working cover, a first screening plate is arranged in the working cover, and a first motor is connected to an outer wall of the working cover; a connecting column is rotationally arranged at the center of the first screening plate; a conical flow dividing block is arranged at the upper side of the connecting column, and grinding rollers are uniformly connected to the side wall of the connecting column; the grinding cylinder is of an integrated structure composed of an upper circular truncated cone, a cylindrical block and a lower circular truncated cone in sequence from top to bottom, the upper circular truncated cone and the lower circular truncated cone are hollow, and the upper circular truncated cone is connected to the lower side of the first screening plate; a second motor is arranged at the upper side of the cylindrical block, and the second motor is connected with the bottom surface of the connecting column; and the grinding cover is rotationally arranged at the lower part of the working cover through a support member, a discharge hole is formed in the lower side of the grinding cover, and a second screening plate is arranged in the discharge hole. According to the flour screening device, flour can be ground and screened multiple times, so that the screening quality of the flour is guaranteed, and the burden of workers is relieved.

The invention discloses a vibration screening feeding hopper and relates to the technical field of Chinese medicinal herb processing equipment. The vibration screening feeding hopper comprises a hopper body, wherein the hopper body comprises a primary screening mechanism and a secondary screening mechanism sequentially arranged from top to bottom; an elastomer is connected between the primary screening mechanism and the secondary screening mechanism; the primary screening mechanism comprises a feeding screen and a second screen sequentially arranged from top to bottom; a striking assembly is arranged between the feeding screen and the second screen; the secondary screening mechanism comprises a third screen and a vibrating assembly arranged below the third screen and used for driving the third screen to vibrate; one end of the elastomer is connected with the second screen; and the other end of the elastomer is connected with the third screen. According to the vibration screening feeding hopper, powder sequentially passes through the feeding screen, the second screen and the third screen for three-stage screening, so that the screening quality of the powder is ensured; and in addition, through vibration, the screening circulation of the powder is ensured and the screening efficiency is improved.

The invention discloses screening equipment for controlling powder coating particles, and belongs to the field of powder coating manufacturing. The screening equipment is characterized in that a firstcavity is formed in a box body, a screening mechanism for screening a powder coatings is arranged in the first cavity, an impurity removing mechanism for removing the fine-particle powder coating isarranged on the discharging side of the screening mechanism, and the impurity removal mechanism is connected with a dust removal mechanism. According to the screening equipment for controlling the powder coating particles, multi-stage screening and grinding refining can be conducted on the coating, the situation of repeated refining and screening is reduced, the screening speed is increased, different speeds of rotation are set for a screening barrel, two-stage screening is conducted on the screening barrel with two layers inside during rapid rotation, and the screening speed and the screeningquality both can be guaranteed; and the coating is blown by an air pump and is rolled up and suspended by sweeping pieces, so that the coating can pass through the screening barrel and a screen morequickly, and it is guaranteed that the coating has a better effect in the using process.

The invention provides a coal screening system device based on big data and a screening method thereof. In the coal processing direction, the system device comprises a pre-screening device, a crushing device and a screening device which are sequentially connected through a conveying belt; the system device further comprises a detection device, a control device and a data processing device, the detection device comprises a particle size analyzer, and the control device receives a detection signal sent by the particle size analyzer and feeds back and controls the screening speed of the pre-screening device, the crushing particle size of the crushing device and the screening speed of the screening device; and the data processing device records the detection signal received by the control device and a control signal sent by the control device, and feeds back and adjusts control parameters of the control device. The particle size distribution of coal at each stage is detected, and the data processing device is combined with the control device to adjust the parameters of the pre-screening device, the crushing device and the screening device, so that the screening particle size and the screening efficiency are ensured, and the coal screening system device has the characteristics of high stability, high efficiency, high reliability and the like.

The invention belongs to the technical field of magnetic mineral separation. The gradient magnetic weight centrifugal screening chute, equipment and method for magnetic minerals comprises a screeningmagnetic system and a spiral chute, wherein the screening magnetic system comprises multiple groups of magnetic units which are in homo-polar arrangement along a cylindrical surface; the spiral chuteis coaxially arranged on the outer side of the screening magnetic system and is positioned in the radial direction of the spiral chute; the magnetic field intensity, which acts on the spiral chute, ofthe screening magnetic system is dispersed and weakened from inside to outside to form a radial magnetic field gradient; the intersecting line of the chute surface of the spiral chute and the coaxialcylindrical surface alpha is a spatial spiral line beta; in the spatial spiral line beta, the intensity of the magnetic field of each point on at least one lead is the same. According to the invention, the screening efficiency of the magnetic minerals is higher, in addition, the screening quality of the magnetic minerals is effectively guaranteed, non-magnetic minerals with a high particle size can be prevented from being mixed in the magnetic minerals, the loss of fine-grained magnetic minerals can be avoided, and therefore, screening quality and yield can be improved.

The invention provides a text classification screening method using LDA, and the method comprises the steps: obtaining a data set which comprises a plurality of short sentences; preprocessing the data by using a natural language processing method, and cleaning and sorting the data; determining a subject, and manually selecting text sentences suitable for the subject; establishing a corresponding text vector matrix by using the selected text sentences and a bag-of-words model; training a first LDA model by using the vector matrix; screening residual sentences in the text by using the first LDA model, calculating the correlation between the text set and a plurality of topic words obtained by calculating a first LDA topic, and taking the correlation as a threshold for evaluating whether one sentence meets a selected topic model or not; adding a text screened through topic correlation, and training a second LDA model; using the second LDA model for judging and screening remaining sentences in the text through cosine similarity; and taking the sentences screened for three times in total as text data conforming to a screening target.

The invention discloses a feeding funnel of an automatic discharging rotary screen, relating to the field of material screening equipment. The feeding funnel comprises a bracket, wherein a cannular rotary screen is fixed on the bracket; the feeding funnel is arranged at one end of the rotary screen; the feeding funnel is characterized in that a material stopping plate is arranged at the lower end of the feeding funnel; and the material stopping plate is inserted into a discharging throat channel of the feeding funnel. The feeding funnel is simple in structure and convenient to use; the discharging speed of the feeding funnel can be controlled only by adjusting the insertion depth of the material stopping plate; the screening speed can be adjusted according to the condition of the material to be screened; and the screening efficiency can be improved under the condition that the screening quality is ensured.

The invention discloses agricultural grape particle screening equipment. The agricultural grape particle screening equipment comprises a screening box, a screening plate and a fixed base plate; the screening plate is mounted in the screening box; an adding port is formed in the upper end surface of the screening box; a first discharge plate and a second discharge plate are arranged on a box body on one side of the screening box; an internal thread hole is formed in the box body on the other side of the screening box; a slope base plate is arranged at the bottom of the box body in the screeningbox; fixed rods are arranged on the box body on the two sides in the screening box; smaller grape particles are eliminated through screening holes in the screening plate; through fixed grooves and the fixed rods, the screening plate and the screening box are conveniently mounted and disassembled; through a connecting hole in a connecting plate, a fastening bolt and the internal thread hole in thebox body at one end of the screening box, the mounting stability of the screening plate and the screening box is guaranteed; and through a reciprocating motion of the screening plate, grapes placed on the screening plate are screened, so that use is convenient, and the grape particle screening efficiency is improved.

The invention relates to the technical field of steel slag micro-powder processing, in particular to a feeding and screening device for a powder concentrator, which comprises a shell, a control structure for controlling feeding and discharging of coarse steel slag micro-powder is connected onto the shell, a screening structure is connected onto the shell, a cleaning structure is connected onto the shell, and the cleaning structure is connected onto the shell. The shell is connected with a buffer structure, a material returning structure and a rubbing structure; the control structure facilitates uniform feeding and discharging of the steel slag micro-powder coarse materials, the screening structure can screen out the large steel slag micro-powder coarse materials, the buffering structure can effectively prevent the steel slag micro-powder coarse materials from impacting the screening structure, and the material returning structure can discharge the large steel slag micro-powder coarse materials. And meanwhile, diffusion of steel slag micro powder raised in the shell is effectively avoided, the scraping structure can scrape the material returning structure, so that normal work of the material returning structure is maintained, the screening structure can be cleaned through the cleaning structure, and the screening quality is guaranteed.

The invention provides a cylinder screen, and relates to the field of agricultural machinery. The cylinder screen comprises a screen and a rack, wherein the screen comprises a cylindrical screen withopenings in two ends and a bottom plate connected to the opening in one end of the cylindrical screen; the inner wall of the cylindrical screen is uniformly equipped with a plurality of circular rings; the rack comprises a base, a screen rack mounted on the base and an unloading path; a cavity capable of allowing the cylindrical screen to place in is arranged in the screen rack; an opening is formed in one side of the cavity; a plurality of guide rollers are uniformly arranged on the inner wall of the cavity of the screen rack; the cylindrical screen is mounted in the cavity; the opening of the cylindrical screen and the opening of the cavity are formed in the same side; one end, close to the opening, of the top of the screen rack is provided with a charge hole; one end, close to the opening, of the bottom of the screen rack is provided with a waste discharge hole; a material discharge hole is formed in the screen rack below the cylindrical screen; the unloading path is arranged in aninclined mode; the top of the unloading path is connected with the charge hole; and the bottom of the unloading path leads to the inner side of the cavity. The cylindrical screen is reasonable in structural design, is simple and convenient to operate, is good in screening effect, ensures screening quality through a special angle of inclination, and improves screening efficiency.

The invention discloses an automatic screening device for neodymium iron boron magnetic powder and an automatic screening method thereof. The automatic screening device comprises a screening barrel, adispersing mechanism, a deviating mechanism, a collecting mechanism, a detecting mechanism and a controller. The dispersing mechanism comprises a feeding pipe, a rotating cylinder, a cutting assemblyand a driving assembly. The deviating mechanism comprises a protection plate and a plurality of magnets. The collecting mechanism comprises a first collecting barrel, a first telescopic assembly, a plurality of second collecting barrels and a plurality of second telescopic assemblies. The detecting mechanism is used for detecting the collecting amount of the neodymium iron boron magnetic powder in the first collecting barrel and the second collecting barrels. The controller is used for adjusting the rotating speed of the rotating cylinder through the driving assembly according to the specificgravity of blocky powder balls in the neodymium iron boron magnetic powder per unit volume and a data corresponding relation in a preset specific gravity-rotating speed comparison table. The screening efficiency of the neodymium iron boron magnetic powder is improved. The caked neodymium iron boron magnetic powder can be cut up, so that the screening effect is improved, and the screening qualityand purity of the neodymium iron boron magnetic powder are guaranteed.

The invention discloses a clay crusher for producing an energy saving material. A motor cover is mounted on a machine body, a motor holding base is mounted in the motor cover, a first motor is fixed to the motor holding base, a pore plate is mounted at the bottom of the first motor, a crushing chamber is arranged at the lower end of the pore plate, a crusher is arranged in the crushing chamber, atop plate on the crusher is connected with the first motor and a second motor, a vibratory screening mechanism is arranged at the lower end of the crusher, a cylinder is arranged at the lower end of the vibratory screening mechanism, the second motor is mounted in the cylinder, a maintenance chamber is arranged on the left side of the crushing chamber, a door plate is mounted on the maintenance chamber, a discharge chamber is arranged at the lower end of the maintenance chamber, and the discharge chamber is connected with the cylinder. The clay crusher has the functions of crushing clay and screening clay particles.

The invention relates to an automatic sesame shelling and sieving machine comprising a rack, wherein the front and rear sides of the rack are symmetrically provided with mounting plates; the lower part of the rack is in sliding connection with a storage cabinet located in the rack; a first sieve plate is obliquely fixed at the middle part of the rack; a second sieve plate is obliquely arranged at the medium-upper part of the rack; a motor is arranged between the first sieve plate and the second sieve plate and is fixed on the rack; a shelling device is arranged above the second sieve plate; a transmission device is arranged at the front sides of the mounting plates; the shelling device is connected with the motor through the transmission device; the transmission device is driven by the motor, and then the power is transferred to the shelling device, therefore, shelling treatment on sesame is realized. The automatic sesame shelling and sieving machine has the advantages of reasonable structural design, low manufacturing cost, convenience in use and the like; the aim of efficiently sieving the sesame is achieved; a two-stage sieving way is adopted, so that sesame shelling, fine sesame sieving and sesame collecting processes are achieved, the manpower and material investments are reduced, and the sesame sieving quality is ensured.

The invention discloses corn screening equipment. The corn screening equipment comprises a stepped feeding machine, a first conveyor is horizontally erected under the outlet end of the stepped feeding machine, a visual recognition device is erected above the outlet end of the first conveyor, a second conveyor capable of conducting forward and reverse rotation conveying is erected below the outlet end of the first conveyor in a crossed mode, the two sides of the position, opposite to the outlet end of the first conveyor, of the second conveyor are each provided with a detection device used for jointly judging whether corn exists or not, the two ends of the second conveyor are each connected with a material guide plate inclining downwards, the bottom ends of the material guide plates stretch into a collecting box, the collecting box is provided with a feeding level device and an acousto-optic generator, and the acousto-optic generator, the feeding level device, the detection device, the second conveyor, the visual recognition device, the first conveyor and the stepped feeding machine are all connected with an industrial personal computer. The corn screening equipment solves the technical problem of how to guarantee the quality and automatically screen the corn in size and shape.

The invention is applicable to the technical field of agriculture, and provides an agricultural seed screening device. The agricultural seed screening device comprises a first screening chamber, and aconnecting shaft; a screening box in an inverted circular truncated cone shape is rotationally arranged in the first screening chamber; a first screen is arranged on the side wall of the screening box; the connecting shaft is hollow; one end of the connecting shaft is fixedly connected with the top of the screening box and communicates with the interior of the screening box; the other end of theconnecting shaft is arranged on the outer part of the first screening chamber and is provided with a feeding port; a material guiding piece is mounted in the first screening chamber; the material guiding piece is in a circular truncated cone shape and is hollow; the bottom face of the screening box is attached to the top face of the material guiding piece; a discharging opening is formed in the bottom of the screening box; an electric valve is arranged on the discharging opening; a second screen is arranged below the discharging opening in a sliding mode; a vibrating mechanism for driving thesecond screen to vibrate is further arranged; the part, close to the second screen, of the first screening chamber communicates with a second screening chamber with an opening in the upper end througha material guiding pipe; and an air blower is fixed to the side, opposite to the material guiding pipe, of the screening chamber. According to the embodiment, the seed screening effect can be improved, and the seed screening quality is improved.

The invention discloses clutch connecting disc machining equipment. The equipment comprises a shell, a rotating disc, a mounting frame, a frame, a shot blasting machine, a guide plate, a vibration screen, a vibration motor, a limiting plate and a recovery box; the mounting frame and the frame are arranged at the upper part of the shell; the rotating disc is arranged on the mounting frame; a mechanical clamping jaw is arranged at the middle part of the rotating disc; driving equipment is arranged on the mounting frame; the shot blasting machine is arranged on the frame; the guide plate is arranged under the rotating disc; the guide plate is aslant arranged, one end is fixed on the shell, and a blanking port for enabling steel shots to pass through is formed between the other end and the shell; the vibration screen is arranged under the guide plate, and is downwards inclined along the horizontal plane; a discharge port is formed between one lower end of the vibration screen and the shell; the recovery box is arranged on the outer side of the shell; and the limiting plate is arranged between the guide plate and the vibration screen. The equipment is high in machining quality, excellent in effect, high in steel shot screening efficiency and excellent in screening quality.

The invention relates to an efficient seed separator and belongs to the technical field of agricultural machines. A rack of the separator is provided with a feeding hopper, and the center is providedwith an air sucking opening. The portion below the feeding hopper is opposite to a feeding opening of a screening part. The screening part contains five layers of efficient seed separating sieves. Thehigh end of the highest layer and the high end of the second highest layer of the upper group are connected below the feeding opening in a receiving manner, impurity discharging grooves are formed inthe lower ends correspondingly, and material pouring plates are installed under the highest layer and the second highest layer correspondingly. The separating sieve on the middle layer in the lower group and the separating sieves of the upper group incline reversely, the high end of the separating sieve on the middle layer is connected under the lower ends of the material pouring plates of the highest layer and the second highest layer in a receiving manner, and a material pouring plate parallel to the separating sieve is installed below the separating sieve on the middle layer. The high endof the second lower layer and the high end of the lowest layer of the lower group are connected with the lower end of the middle layer in a receiving manner, impurity separating plates parallel to thesecond lower layer and the lowest layer are installed under the second lower layer and the lowest layer correspondingly, and the lower ends of the second lower layer and the lowest layer lead to a seed discharging opening through an air floating sieve. A wind outlet of a wind blower on the bottom of the rack leads to a rear wind sucking channel. The efficient seed separator remarkably reduces theimpurity content rate, improves screening efficiency and ensures operation quality for a long time.

The invention discloses a pseudo-ginseng powder processing screening system which comprises a screening box body. An air blasting box body is connected and fixed to an opening in one end of the screening box body in a clamping manner, and a first motor is fixed in the air blasting box body. The output end of the first motor is coaxially and fixedly connected with a first rotating shaft, and a first airflow stirring blade is fixed to the first rotating shaft. A limiting insertion hole is formed in the upper side wall of the air blasting box body, and a powder filtering screen is installed on the limiting insertion hole. A discharging box body is fixedly connected to an opening in the other end of the screening box body, and a discharging pipe is fixed to the side wall of the discharging boxbody in a threaded manner. A material collecting cloth bag is installed at the other end of the discharging pipe, and multiple material collecting box bodies are fixedly connected to the lower surface of the screening box body. L-shaped connecting pipes are connected to the side walls of the upper portions of the material collecting box bodies, and the L-shaped connecting pipes are connected witha circulation conveying pipe. A first threaded limiting through hole and a second threaded limiting through hole are formed in the upper surface of the screening box body, and the other end of the circulation conveying pipe is fixedly connected with the first threaded limiting through hole through a power conveying device in a threaded manner.

The invention discloses a method for preventing a mortar spraying machine from being blocked. The method comprises the following steps of: preparing a sieving dust hopper device, wherein the sieving dust hopper device comprises a dust hopper; arranging a grid layer on a material discharge hole at the bottom of the dust hopper, and a movable grid layer which is movably arranged and can be taken out in the dust hopper; fixing an electrodynamic vibrator on the dust hopper, wherein the sizes of the holes in movable grid layer are smaller than those of the holes in the grid layer; arranging the sieving dust hopper device above a dust groove of the mortar spraying machine by using an elastic component; and staring the electrodynamic vibrator on the sieving dust hopper device when the mortar spraying machine works to block coarse aggregate and foreign matter mixed in the mortar material by using the movable grid layer and the grid layer in the sieving dust hopper device, and taking the movable grid layer out from the dust hoper and removing the coarse aggregate and foreign matter. Therefore, the coarse aggregate and foreign matter are prevented from entering a spray gun nozzle, a pipe, or a pump of the mortar spraying machine to effectively avoid the blocking phenomenon.