71results about How to "Increase screening rate" patented technology

The invention discloses a high-efficiency sand sieving device for municipal construction. The high-efficiency sand sieving device for municipal construction comprises a sieving box. The top of the sieving box is provided with a top plate. A driving motor is arranged on the top plate. An output shaft of the driving motor is coaxially and fixedly provided with a driving belt pulley. A second smashing rotary roller is coaxially and fixedly provided with a fourth driven belt pulley and a third driven belt pulley. A first driving bet is wound around the third driven belt pulley and the driving beltpulley. The right end of a concentric-square-shaped frame is horizontally and fixedly provided with a right guide slide rod which is slidably connected with the right sidewall of the sieving box. Sand entering the sieving box through a feed hopper is scattered by a first smashing rotary roller and the second smashing rotary roller in the rotating process, so that caking sand blocks in the sand are broken up and scattered. Rotary blades rotate to promote scattering of the sand. Meanwhile, wind generated by rotating of the rotary blades promotes flowing of air in the sieving box to play a rolein drying the sand. The fluidity of the sand is improved, and the subsequent sieving effect is improved accordingly.

The invention discloses a sand screening device for construction. The sand screening device comprises a bottom plate and a screening box. A left vertical plate and a right vertical plate are vertically and fixedly mounted on the bottom plate. A top plate is horizontally and fixedly mounted on the left vertical plate and the right vertical plate. Supporting legs are vertically and fixedly mounted at the bottom of the screening box. A feeding pipe is mounted on the top plate and communicates with the interior of the screening box through a flexible connecting pipe. Damping springs are fixedly connected between the screening box and the left side wall of the right vertical plate. The sand screening device has the obvious advantages that the screening effect on sand is good, and the screeningspeed is high; the screening box is driven through a second connecting rod and a first connecting rod to do left-and-right reciprocating motion under the elastic acting force of the damping springs,shaking of the sand in the screening box is promoted, and the sand screening rate is increased; and through rotation of an oval cam, a first screening plate and a second screening plate are driven tovibrate up and down under the elastic action of second limiting springs, and the screening speed of the first screening plate and a second screening plate on the sand is further increased.

The invention discloses a corn seed screening device for agricultural breeding. The corn seed screening device comprises a bottom plate. A left vertical plate and a right vertical plate are verticallyare fixedly installed on the bottom plate; a driven belt wheel is arranged and fixedly installed on a driven shaft in a sleeving mode; a driving belt wheel and the driven belt wheel are sleeved witha transmission belt; a screening basket movably penetrates between the left vertical plate and the right vertical plate in a mode of being inclined towards the lower-right portion; the upper end of aconnecting rod is hinged to the lower-left bottom face of the screening basket; and a first collecting groove is fixedly formed in the lower portion of the screening basket. A hot air machine conductshot air drying on corn seeds in a housing through an air supply pipe and an air collection cover; a driving shaft drives a spiral blade to turn over the corn seeds rotationally, so that hot air and the corn seeds can make full contact, and the drying effect is greatly improved; meanwhile, the corn seeds conveyed on a conveying belt are subjected to secondary air-blowing drying of fan blades and can be spread on the conveying belt, and thus the drying effect is better; and vibration of the screening basket to the corn seeds is facilitated through swinging of the screening basket, and thus thescreening rate is increased.

The invention discloses a seasoning production device, and relates to the technical field of seasoning production. The invention aims at screening and drying the raw materials required for seasoning production. The seasoning production device specially comprises a shell, and four springs are welded to the outer wall of the bottom of the shell. A screening box is welded to the outer walls of the tops of the four springs. A draught fan is fixed to the outer wall of the top of the screening box through bolts, and the output end of the draught fan is connected to the top inner wall of the screening box. A heating column is fixed to the inner wall of the top of the screening box through bolts. A vibration motor is fixed to the outer wall of one side of the screening box through bolts. A first collecting box, a second collecting box and a discharging plate are arranged on the outer wall of one side of the screening box, a third collecting box is arranged on the outer wall of the other side of the screening box, and a V-shaped screen, a first screen and a second screen are fixed to the inner wall of the screening box through bolts from top to bottom. Seasoning can be screened through thefirst screen and the second screen.

The invention discloses a waste coal slag smashing device for a power plant. The waste coal slag smashing device comprises an outer shell. Two hydraulic cylinders are symmetrically and fixedly installed on the outer side wall of the upper portion of the outer shell; piston rods of the hydraulic cylinders penetrate through the side walls of the outer shell, extrusion plates are fixedly installed onthe piston rods of the hydraulic cylinders, and smashing teeth are arranged on the extrusion plates; output shafts of first motors penetrate through the side walls of the outer shell, and a turning-over plate is fixedly installed on the output shafts of the first motors through pin shafts and bearings; two second motors are fixedly installed on the outer side wall of the middle of the outer shell, output shafts of the second motors are in transmission connection with roller shafts through couplers, smashing rollers are arranged on the roller shafts, and hemispherical protruding blocks are arranged on the smashing rollers; and a filter net plate is erected on erecting plates. The smashing efficiency is high, the smashing precision of waste coal slag is improved, the fine waste coal slag meeting the requirement can be screened out, thus the screening speed is high, and the screening effect is good.

The invention discloses a vibrating screen sand tray, and belongs to the technical field of mining machinery. The vibrating screen sand tray comprises a vibrating frame, a vibrating device and a transmission device, wherein a screen net is mounted in the vibrating frame; side plates are arranged on the two sides of the vibrating frame; the vibrating device is arranged on the lower side of the vibrating frame, and the vibrating device comprises a transmission rod, a cam, and a row of ejector rods; a cross-shaped through hole is formed in the cam, the transmission rod comprises a cross-shaped rod and round rods, the round rods are arranged at the two ends of the cross-shaped rod correspondingly, and the transmission rod is mounted on the two side plates through the round rods; the cam is matched with the cross-shaped rod through the cross-shaped through hole; the two ends of a limiting plate are welded on the two side plates, and the row of ejector rods are arranged on the limiting plate; and a convex cap and an ejector plate are welded at the two ends of each ejector rod correspondingly, each convex cap is matched with each cam, and springs are arranged between the ejector plates and the screen net in a matched mode. According to the vibrating screen sand tray, the cam devices are used for conducting intensive vibration on the screen net, so that the vibration frequency of a vibrating screen is improved, and the vibration efficiency of the vibration screen is further increased.

The invention discloses a construction sand screening machine facilitating automatic discharging and relates to the technical field of sand screening machines. The construction sand screening machine comprises an outer frame. A first motor is fixedly connected with the bottom of the inner wall of the outer frame. A first belt wheel is fixedly connected with one end of an output shaft of the first motor. A second belt wheel is in transmission connection with the surface of the first belt wheel through a belt. The axis of the second belt wheel is fixedly connected with the bottom of the inner wall of the outer frame through a rotary base. A moving device is fixedly connected with the surface of the second belt wheel. A transverse plate is rotationally connected with the right side of the top of the moving device. The left side of the transverse plate is rotationally connected with the left side of the inner wall of the outer frame. According to the construction sand screening machine facilitating automatic discharging, the purpose of increasing the screening speed is achieved, a screen is driven to vibrate, thus the screening speed is higher, the working efficiency is improved, time waste is reduced, sand does not need to be taken out manually, worker burden is relieved, application by people is facilitated, discharging through a discharging port is facilitated, and large-particles sand can be taken out through a box door conveniently.

The invention relates to the technical field of sieving, and particularly to a rice sieving device which is characterized in that an upper cover is connected to the upper side of a box body through a clamping mechanism; a first filter plate and a second filter plate are arranged in the box body; a plurality of thread rods are in threaded connection with the box body on the outer side of each of the first filter plate and the second filter plate; the first filter plate and the second filter plate divide the box body into an impurity removing chamber, a filtering chamber and a dust collecting chamber from top to bottom; a discharge opening is formed in one side of the lower part of the filtering chamber and communicated with the filtering chamber; a valve is arranged at the discharge opening; a damping pillar is mounted at each of the four corners at the lower end of the box body; a same base is mounted at the lower ends of the damping pillars; a double-end motor is mounted at the middle position of the upper end of the base through a limiting mechanism; the output shafts of the two ends of the double-end motor are connected to the lower end of the box body through a transmission mechanism; a dust outlet is formed in the lower end of the dust collecting chamber. According to the rice sieving device, rice is automatically sieved, the rice sieving rate is increased, the working efficiency is improved, and the service life of the device is improved.

A nano-sieve for filtering the nanoparticles is composed of an aluminium oxide membrane with regularly arranged nano-hole mesh structure and a membrane holder with peripheral side wall.

The invention provides a modified PBAT granulation device and a preparation method of a PBAT foaming material, and relates to the technical field of granulation machinery. The device comprises a cooling plate rail. A sieve plate is mounted at the bottom of the right end of the cooling plate rail; a drying device is mounted on a side bracket, a grain cutting device is mounted at the right end of the side bracket, and a reciprocating device is mounted at the outer side of the side bracket; and the mobility of long-strip-shaped raw materials is improved, the situation that the long-strip-shaped raw materials are accumulated in the cooling plate rail, and consequently the conveying passing ability of the long-strip-shaped raw materials is affected is avoided, the grain cutting smoothness and the grain cutting efficiency of the long-strip-shaped raw materials are improved through the grain cutting device, the situation that the raw materials adhere to blades or the front end face of a guide base during grain cutting is avoided through the drying device, the raw materials obtained after grain cutting can be dried, the drying degree of the stored grain cutting materials is improved, the reciprocating device is matched with the sieve plate, prepared raw material grains can be subjected to batch standard screening, and the screening speed is increased, so that the problem that the sieve plate is blocked due to the fact that the prepared raw materials are excessively stacked on the sieve plate is solved.

The invention relates to the technical field of agricultural chemical fertilizer hardened with damp, in particular to a processor for agricultural chemical fertilizer hardened with damp. The processorcomprises a box. A feeding hopper penetrates through the top of the box. A smashing assembly is arranged at the portion, below the feeding hopper, of the box. A screening assembly is arranged at theportion, below the smashing assembly, of the box. The screening assembly is connected with the screening assembly through a transmission assembly. A dehumidification assembly is arranged at the portion, below the screening assembly, of the box. The dehumidification assembly is in transmission connection with the smashing assembly through a drive assembly. Agricultural chemical fertilizer hardenedwith damp is smashed through the smashing assembly, then, the fertilizer enters the screening assembly for secondary screening processing, unsmashed or large-particle fertilizer is screened out, the transmission assembly is arranged for supplying transmission power to the screening assembly, the screening effect of the screening assembly is improved, the dehumidification assembly is used for performing dehydration and dehumidification on the screened agricultural chemical fertilizer, and the agricultural chemical fertilizer hardened with damp is recycled.

The invention relates to the technical field of shot blasting machines, and discloses a shot blasting machine capable of cleaning and recycling shots. The shot blasting machine comprises a shell, a positioning frame is rotatably connected to the middle of an inner cavity of the shell, positioning discs are fixedly connected to a left wall and a right wall of an inner cavity of the positioning frame, ratchet plates are slidably connected to the left side and the right side of an inner cavity of the shell, ratchet columns are slidably connected to the lower portions of the ratchet plates in theinner cavity of the shell, limiting sleeves are fixedly connected to one ends, close to the positioning frame, of the ratchet columns, and curved grooves are formed in inner cavities of the limiting sleeves on the surfaces of the left end and the right end of the positioning frame. According to the shot blasting machine capable of cleaning and recycling the shots, a guide rod deflects in a reciprocating mode through up-down movement of a movable piece, and the ratchet plates drive the limiting sleeves to enable a workpiece in the positioning frame to continuously rotate so as to continuously change a casting surface, the processing quality and the machining rate of the surface of the workpiece are effectively improved, and it is effectively guaranteed that the shots can be recycled in a neat state.

The invention discloses a waste electronic circuit board crushing and recycling device convenient to clean. The waste electronic circuit board crushing and recycling device comprises a crushing tank body and crushing rollers. Two push rods are held by two hands to lift up the whole crushing tank body, the whole crushing tank body is supported by a support rod to work stably, a pneumatic hydraulic cylinder and two motors are started, waste electronic circuit boards are put into the crushing tank body from a feeding box and fall onto the surface of a first crushing plate on a first pressure-bearing block, the crushed electronic circuit boards and the uncrushed electronic circuit boards are taken out by opening sealing doors respectively, and the uncrushed electronic circuit boards are put into the feeding box again for crushing. By means of the waste electronic circuit board crushing and recycling device convenient to clean, the waste electronic circuit boards which are not crushed completely can be screened conveniently, secondary smashing is convenient, and therefore the smashing efficiency is improved, and moving is convenient; and a fan below a second pressure-bearing block can dissipate heat of equipment and can also blow impurities in the crushing tank body to the lower portion after operation, an inclined block is arranged on the right side of the crushing tank body, the waste electronic circuit boards can be guided to enter the crushing rollers, and the crushing efficiency is 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 relates to the technical field of metallurgy, in particular to submerged arc refining slag for square billet LF (ladle furnace) refining. The submerged arc refining slag comprises the following raw materials in percentage by weight: 40 to 65 percent of CaCO3, 0 to 20 percent of MgO, 5 to 10 percent of SiO2, 0 to 20 percent of BaCO3, 0 to 10 percent of Na2CO3, 0 to 15 percent of SiC and 0 to 15 percent of CaF2. The method is mainly used for submerged arc of square billets in the LF refining process; carbonates (CaCO3, BaCO3, Na2CO3, MgCO3) and the like are used as main raw materials; the carbonates are decomposed due to high temperature after entering molten steel; a large number of CO2 bubbles are generated; meanwhile, brought-in SiC, C, CaC2 and the like react with CO2 to generate CO; a large number of bubbles are obtained; and the purpose of submerged arc is achieved.

The invention discloses a mobile multistage tea screening machine. The mobile multistage tea screening machine comprises a screening box, a fixed tabletop, table legs, a dust sucker and a hydraulic device; the table legs are mounted at the lower end of the fixed tabletop; cross bars are mounted between the table legs; universal rollers are mounted at the bottom ends of the table legs; parking andbraking devices are mounted on the universal rollers; the screening box is positioned on the fixed tabletop; a control switch is arranged on the fixed tabletop; a fixed plate is mounted on one side ofthe screening box; a dust sucker is mounted on the fixed plate; the hydraulic device is mounted at the bottom end of the fixed tabletop; a feed port and a dust sucking cover are arranged at the upperend of the screening box; the feed port is positioned on one side of the dust sucking cover; the upper end of the feed port is connected with a cover plate through a second rotating shaft; the dust sucking cover is connected with the dust sucker through a dust sucking pipe; and first rotating shafts are mounted on two sides of the screening box. Because of the universal rollers at the lower end of the table legs, people are convenient to move the screening machine without needing reciprocating carrying.

The invention discloses a relay test method based on a virtual instrument. A DC power supply is applied to supply power to a relay. Existing high-speed data acquisition equipment is applied to perform data acquisition, and logic control is performed through autonomous programming. According to the test method, operation voltage and time and return voltage and time of the relay can be detected, and detection speed is high, the degree of automation is high and the relay can be repeatedly tested so that the test method is suitable for receiving inspection and material selection, great in application prospect and worthy of popularization.

The invention relates to the field of mechanical vibration and particularly relates to an electromagnetic vibrating feeder. The electromagnetic vibrating feeder comprises an electromagnetic vibrator (1), an electromagnetic vibrator base (2), a feeder bracket (3), a feeding hopper (4), a sieve plate (5), a vibration adsorber (6) and a feeding groove (7). By improving the electromagnetic vibrating feeder and additionally mounting the sieve plate (5) and the feeding hopper (4), purposes of separating materials and performing vibrating feeding are achieved. By improving a half-wave rectifying circuit of the electromagnetic vibrator and reversely connecting a diode, purposes of braking quickly and protecting a coil can be achieved.

The invention discloses a rolling shaft type ore size sorting machine with the shaking effect. The rolling shaft type ore size sorting machine comprises a box body, a fixing plate, a first motor, a gear, a first chain, a second chain, a rotary wheel, a feed hopper, a first discharging hopper, a second discharging hopper and a third discharging hopper. The feed hopper penetrates through the top ofthe box body; the fixing plate is fixedly connected with the front face of the box body; the first motor is fixedly connected with the top of the fixing plate; a driving rolling wheel and driven rolling wheels penetrate through the front face of the box body; and the gear is fixedly connected with an output shaft of the first motor. Three times of sieving are carried out to ores, so that ore sieving is more meticulous, size of the ores after sieving is closer to unity and more uniform, subsequent ore processing in more convenient, subsequent ore processing efficiency is improved; and a sieve plate can shock up and down, and therefore ore distribution on the sieve plate is more uniform, sieving speed is higher, and sieving efficiency is greatly improved.