CN112246629A - Prevent rice screening installation of jam - Google Patents

Abstract

The invention relates to anti-blocking rice screening equipment which comprises a screening box, a pressing plate, a fixing plate, a filter screen, a rotating mechanism and a cleaning mechanism, wherein the rotating mechanism comprises a motor, a rotating shaft, a first bevel gear, a second bevel gear, a first rolling rod, a limiting rod, fan blades, a fixing block and a pushing shovel component, the cleaning mechanism comprises a transmission component and a cleaning component, the anti-blocking rice screening equipment can drive a pushing shovel of a pressing block to rice through the motor and then rotate to a high position to fall down, so that the rice vibrates violently, impurities attached to the rice are loosened and are blown to the filter screen by wind formed by the fan blades more easily, clean rice is reserved, and meanwhile, the motor can also drive the sliding rod to ascend and descend, so that a brush head washes the filter screen, the filter screen is prevented from being blocked, and the screening efficiency is.

Description

Prevent rice screening installation of jam

Technical Field

The invention particularly relates to anti-blocking rice screening equipment.

Background

The rice screening installation that uses at present filters magazine through the filter screen most, leaves clean rice, however under long-time use, the filter screen can be blockked up by magazine for the filtration energy of filter screen descends, reduces the screening efficiency of rice, and the rice screening is mainly stirred or is bloied the rice simultaneously, and the rice motion is not violent, makes impurity and rice separation effect relatively poor, and the screening efficiency ratio is lower.

Summary of the invention

The invention aims to solve the technical problems that: in order to overcome the defects of the prior art, the anti-blocking rice screening equipment is provided.

The invention creates and solves the technical problem and adopts the technical scheme that: a rice screening device capable of preventing blockage comprises a screening box, a pressing plate, fixing plates, filter screens, a rotating mechanism and a cleaning mechanism, wherein the screening box is horizontally arranged, the pressing plate, the fixing plates, the filter screens, the rotating mechanism and the cleaning mechanism are all arranged in the screening box, the pressing plate is horizontally arranged in the screening box, two fixing plates are vertically arranged at the top end inside the screening box, the number of the filter screens is two, the two filter screens are respectively vertically arranged between the two fixing plates and the pressing plate, one end of each filter screen is connected with one end of the corresponding fixing plate, the other end of each filter screen is connected with the corresponding pressing plate, an agitating mechanism is located between the two filter screens, and the cleaning mechanism is located on one side, away from the agitating mechanism, of each;

the slewing mechanism includes motor, pivot, first bevel gear, second bevel gear, first roll rod, gag lever post, flabellum, fixed block and pushes away shovel subassembly, the fixed block sets up on screening incasement wall one side, fixed block cavity sets up, the motor level sets up on one side that screening incasement wall is close to the fixed block, the pivot is installed on the motor, the pivot is passed the screening case and is located the fixed block, pivot and screening case sliding connection, the pivot is perpendicular with the screening case, first bevel gear cover is established on the pivot is kept away from one of motor and is served, first bevel gear and pivot key-type connection, first roll rod water has two, and two first roll rods level respectively and set up the both sides at first bevel gear, the second bevel gear has two, and two second bevel gears overlap respectively and establish on two first roll rods are close to one of first bevel gear, the two second bevel gears are respectively in key connection with the two first rolling rods, the two fan blades are provided with two pairs, the two pairs of fan blades are respectively sleeved on one ends of the two first rolling rods far away from the first bevel gears, the two pairs of fan blades are respectively in transmission connection with the two first rolling rods, the two limiting rods are respectively sleeved on the two first rolling rods, the two limiting rods are respectively in sliding connection with the two first rolling rods, the two limiting rods are respectively positioned between the two pairs of fan blades and the two second bevel gears, one ends of the two limiting rods far away from the two first rolling rods are respectively connected with the pressing plate, the two push shovel components are respectively arranged on two sides of the first rotating shaft, each push shovel component comprises a push rod, a pressing block and a baffle plate, the push rod is vertically arranged on one side of the first rotating shaft, and the pressing block is horizontally arranged on one end of the push rod far away from the first rotating shaft, the two baffles are respectively arranged on two sides of the pressing block, the two baffles are obliquely arranged, and the distance between the two baffles which are respectively far away from the two sides of the pressing block is smaller than the distance between the two baffles which are respectively close to the two sides of the pressing block;

the cleaning mechanism comprises a transmission component and a cleaning component, the transmission component comprises a first roller, a first belt, a second roller and a second rolling rod, the first roller is sleeved on the rotating shaft and is in key connection with the rotating shaft, the first roller is positioned between a first bevel gear and a sleeve, the second rolling rod is horizontally arranged on one side of the inner wall of the screening box and is in sliding connection with the inner wall of the screening box, the second rolling rod is positioned below the pressing plate and is positioned at the same side of the inner wall of the screening box as the motor, the second rolling rod is parallel to the rotating shaft, the second roller is sleeved on one end of the second rolling rod, the second roller is in key connection with the second rolling rod, one end of the belt is sleeved on the first roller, the other end of the belt is sleeved on the second roller, the first roller is in transmission connection with the second roller through the belt, the cleaning components are arranged on one sides of the two filter screens far away from the motor respectively, the cleaning components comprise a first pulley, a pull rope, a fixed block, a strut, a second spring, a slide bar, a brush head, a first magnet, a second magnet, a third roller, a first fixed rod, a second belt, a fourth roller, a second fixed rod and a second pulley, the strut is vertically arranged on the pressing plate, the slide bar is horizontally sleeved on one end of the strut far away from the pressing plate, the slide bar is in sliding connection with the strut, the brush head is arranged on one end of the slide bar close to the filter screen and is abutted against the filter screen, the brush head is in sliding connection with the filter screen, the second spring is sleeved on the strut, the second spring is positioned between the slide bar and the pressing plate, the second magnet is arranged on one end of the slide bar far away from the filter screen, the first fixed rod is horizontally arranged on one side of the inner wall of the screening box, the first fixed rod is parallel to the rotating shaft, the first fixed rod is positioned at one side of the pillar, which is far away from the filter screen, the first fixed rod and the motor are positioned at the same side of the inner wall of the screening box, the first fixed rod is connected with the inner wall of the screening box in a sliding way, the third roller is sleeved on the first fixed rod, the third roller is connected with the first fixed rod in a key way, the second fixed rod is horizontally arranged above the first fixed rod, the second fixed rod is parallel to the first fixed rod, one end of the second fixed rod is connected with one side of the inner wall of the screening box, the second fixed rod is connected with the inner wall of the screening box in a sliding way, the fourth roller is sleeved on one end of the second fixed rod, which is far away from the inner wall of the screening box, the fourth roller is connected with the second fixed rod in a key way, one end of the belt is sleeved on the third roller, the first magnet is arranged on one side of the belt close to the filter screen and is attracted and abutted with the second magnet, the second pulley is sleeved on one end of the first fixed rod far away from the inner wall of the screening box and is in key connection with the first fixed rod, the fixed block is vertically arranged at the bottom end in the screening box, the fixed block is arranged in a hollow manner and is positioned under the second pulley, two first pulleys are arranged, the two first pulleys are sleeved on the second rolling rod and are respectively connected with the second rolling rod in a key way, the diameter of the first pulley is larger than that of the second pulley, the number of the pull ropes is two, the two pull ropes are respectively arranged between the two first pulleys and the two second pulleys, one ends of the two pull ropes are respectively wound on the two first pulleys, and the other ends of the two pull ropes respectively penetrate through the two fixed blocks and are wound on the two second pulleys;

the screening box top is equipped with the entry, screening box one side is equipped with the export, the export is located the clamp plate top, be equipped with the collecting box on the clamp plate, the collecting box is located the clamp plate below.

For precise control of the rotational speed, the motor is a servo motor.

In order to prevent slipping, lubricating oil is coated on the first bevel gear and the second bevel gear.

In order to increase the entering amount of the rice, the inlet is of a funnel shape, and the diameter of a nozzle at one end of the inlet close to the screening box is smaller than that of a nozzle at one end of the inlet far away from the screening box.

In order to rotate smoothly, a bearing seat is arranged at the joint of the first fixing rod and the inner wall of the screening box, one end of the first fixing rod is located in the bearing seat, and the first fixing rod is connected with the bearing seat in a sliding mode.

In order to avoid rice to pile up, the fixed block is equipped with two swash plates on keeping away from one side of clamp plate, and two swash plates are just to setting up, and the one end that the clamp plate was kept away from to two swash plates supports each other and leans on, and two swash plates are about first pivot central symmetry.

In order to conveniently shovel the rice, two sides of the pressing plate are provided with sharp blocks.

In order to fix the pull rope, a vertical strip-shaped groove is formed in the fixing block, the pull rope penetrates through the strip-shaped groove, and the pull rope is connected with the strip-shaped groove in a sliding mode.

In order to prevent the pull rope from breaking, the pull rope is an elastic rope.

In order to make the rice slide smoothly, the surface of the inclined plate is a mirror surface.

The anti-blocking rice screening equipment has the beneficial effects that the motor can drive the pressing block to push the shovel of the rice, then the shovel rotates to a high position to fall, so that the rice is violently vibrated, impurities attached to the rice are loosened, the impurities are more easily blown to the filter screen by wind formed by the fan blades, clean rice is reserved, and meanwhile, the motor can also drive the sliding rod to ascend and descend, so that the brush head washes the filter screen, the filter screen is prevented from being blocked, and the screening efficiency is improved.

Drawings

The invention is further explained below with reference to the figures and examples.

FIG. 1 is a schematic structural view of the anti-clogging rice screening apparatus of the present invention;

FIG. 2 is a schematic view of the connection structure of the first pulley, the second rolling rod, the second roller and the second belt of the anti-clogging rice screening apparatus of the present invention;

FIG. 3 is a schematic view of the connection structure of the screening box, the motor, the rotating shaft, the push rod, the pressing block, the baffle, the first roller and the first bevel gear of the anti-clogging rice screening device of the invention;

FIG. 4 is a schematic view of the connection structure of the screening box, the motor, the fixing block and the fixing plate of the anti-clogging rice screening apparatus of the invention;

FIG. 5 is an enlarged view of portion A of FIG. 1;

in the figure: 1. the screening box comprises a screening box body, a pressing plate, a fixing plate, a filter screen, a motor, a rotating shaft, a first bevel gear, a second bevel gear, a first rolling rod, a limiting rod, a fan blade, a protecting box, a push rod, a pressing block, a baffle plate, a first roller, a first belt, a second roller, a second rolling rod, a first pulley, a pull rope, a fixing block, a supporting column, a spring, a sliding rod, a brush head, a first magnet, a second magnet, a third roller, a first fixing rod, a second belt, a fourth roller, a second fixing rod, a second pulley, a sloping plate and a collecting box, wherein the first bevel gear, the second bevel gear, the first roller, the second bevel gear, the first rolling rod.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate only the basic structure of the invention, and therefore they show only the components that are relevant to the invention.

As shown in fig. 1-5, an anti-clogging rice screening device comprises ascreening box 1, apressing plate 2, two fixing plates 3,filter screens 4, a rotating mechanism and a cleaning mechanism, wherein thescreening box 1 is horizontally arranged, thepressing plate 2, the fixing plates 3, thefilter screens 4, the rotating mechanism and the cleaning mechanism are all arranged in thescreening box 1, thepressing plate 2 is horizontally arranged in thescreening box 1, the two fixing plates 3 are vertically arranged at the top end inside thescreening box 1, thefilter screens 4 are provided with twofilter screens 4, the twofilter screens 4 are respectively vertically arranged between the two fixing plates 3 and thepressing plate 2, one end of eachfilter screen 4 is connected with one end of each fixing plate 3, the other end of eachfilter screen 4 is connected with thepressing plate 2, the stirring mechanism is arranged between the twofilter screens 4, and the cleaning mechanism is arranged at one side, far away from the stirring mechanism;

the slewing mechanism includesmotor 5,pivot 6,first bevel gear 7,second bevel gear 8,first roll pole 9,gag lever post 10, flabellum 11,guard box 12 and pushes away the shovel subassembly,guard box 12 sets up onscreening case 1 inner wall one side,guard box 12 cavity sets up,motor 5 level sets up on one side thatscreening case 1 outer wall is close toguard box 12,pivot 6 is installed onmotor 5,pivot 6passes screening case 1 and is locatedguard box 12,pivot 6 andscreening case 1 sliding connection,pivot 6 is perpendicular withscreening case 1,first bevel gear 7 cover is established at thepivot 6 one end of keeping away frommotor 5,first bevel gear 7 and 6 key-type connection of pivot,first roll pole 9 water has two, and twofirst roll poles 9 level respectively set up in the both sides offirst bevel gear 7,second bevel gear 8 has two, twosecond bevel gears 8 are respectively sleeved on one ends of two firstrolling rods 9 close to thefirst bevel gears 7, the twosecond bevel gears 8 are respectively in key connection with the twofirst rolling rods 9, two pairs of fan blades 11 are arranged, the two pairs of fan blades 11 are respectively sleeved on one ends of the twofirst rolling rods 9 far away from thefirst bevel gears 7, the two pairs of fan blades 11 are respectively in transmission connection with the two firstrolling rods 9, two limitingrods 10 are arranged, the two limitingrods 10 are respectively sleeved on the twofirst rolling rods 9, the two limitingrods 10 are respectively in sliding connection with the two firstrolling rods 9, the two limitingrods 10 are respectively positioned between the two pairs of fan blades 11 and the twosecond bevel gears 8, one ends of the two limitingrods 10 far away from the two first rollingrods 9 are respectively connected with thepressing plate 2, two push shovel assemblies are arranged on two sides of the rotatingshaft 6 respectively, and each push shovel assembly comprises apush rod 13, Thepush rod 13 is vertically arranged on one side of the rotatingshaft 6, thepress block 14 is horizontally arranged at one end, far away from the rotatingshaft 6, of thepush rod 13, the number of thebaffle plates 15 is two, the twobaffle plates 15 are respectively arranged on two sides of thepress block 14, the twobaffle plates 15 are both obliquely arranged, and the distance between the two sides, far away from thepress block 14, of the twobaffle plates 15 is smaller than the distance between the two sides, close to thepress block 14, of the twobaffle plates 15;

the cleaning mechanism comprises a transmission component and a cleaning component, the transmission component comprises afirst roller 16, afirst belt 17, asecond roller 18 and asecond rolling rod 19, thefirst roller 16 is sleeved on arotating shaft 6, thefirst roller 16 is connected with therotating shaft 6 in a key mode, thefirst roller 16 is positioned between afirst bevel gear 7 and a sleeve, thesecond rolling rod 19 is horizontally arranged on one side of the inner wall of ascreening box 1, thesecond rolling rod 19 is connected with the inner wall of thescreening box 1 in a sliding mode, thesecond rolling rod 19 is positioned below apressing plate 2, thesecond rolling rod 19 and amotor 5 are positioned on the same side of the inner wall of thescreening box 1, thesecond rolling rod 19 is parallel to the rotatingshaft 6, thesecond roller 18 is sleeved on one end of thesecond rolling rod 19, thesecond roller 18 is connected with thesecond rolling rod 19 in a key mode, one end of the belt is sleeved on thefirst roller 16, the other end of the belt is sleeved on thesecond roller 18, thefirst idler wheel 16 is in transmission connection with thesecond idler wheel 18 through a belt, the number of the cleaning assemblies is two, the two cleaning assemblies are respectively arranged on one sides of twofilter screens 4 far away from themotor 5, each cleaning assembly comprises afirst pulley 20, apull rope 21, afixing block 22, asupport column 23, aspring 24, asliding rod 25, abrush head 26, afirst magnet 27, asecond magnet 28, athird idler wheel 29, afirst fixing rod 30, asecond belt 31, afourth idler wheel 32, asecond fixing rod 33 and asecond pulley 34, thesupport column 23 is vertically arranged on thepressing plate 2, thesliding rod 25 is horizontally sleeved on one end of thesupport column 23 far away from thepressing plate 2, thesliding rod 25 is in sliding connection with thesupport column 23, thebrush head 26 is arranged on one end of the slidingrod 25 close to thefilter screens 4, thebrush head 26 is abutted to thefilter screens 4, thebrush head 26 is in sliding connection with thefilter screens 4, thesecond spring 24 is located between thesliding rod 25 and thepressing plate 2, thesecond magnet 28 is arranged at one end of thesliding rod 25 far away from thefilter screen 4, thefirst fixing rod 30 is horizontally arranged at one side of the inner wall of thescreening box 1, thefirst fixing rod 30 is parallel to the rotatingshaft 6, thefirst fixing rod 30 is located at one side of thepillar 23 far away from thefilter screen 4, thefirst fixing rod 30 and themotor 5 are located at the same side of the inner wall of thescreening box 1, thefirst fixing rod 30 is in sliding connection with the inner wall of thescreening box 1, thethird roller 29 is sleeved on thefirst fixing rod 30, thethird roller 29 is in key connection with thefirst fixing rod 30, thesecond fixing rod 33 is horizontally arranged above thefirst fixing rod 30, thesecond fixing rod 33 is parallel to thefirst fixing rod 30, one end of thesecond fixing rod 33 is connected with one side of the inner wall of thescreening box 1, thesecond fixing rod 33 is in sliding connection, thefourth roller 32 is sleeved on one end of thesecond fixing rod 33 far away from the inner wall of thescreening box 1, thefourth roller 32 is in key connection with thesecond fixing rod 33, one end of the belt is sleeved on thethird roller 29, the other end of the belt is sleeved on thefourth roller 32, thethird roller 29 is in transmission connection with thefourth roller 32 through the belt, thefirst magnet 27 is arranged on one side of the belt close to thefilter screen 4, thefirst magnet 27 and thesecond magnet 28 are attracted and abutted against each other, thesecond pulley 34 is sleeved on one end of thefirst fixing rod 30 far away from the inner wall of thescreening box 1, thesecond pulley 34 is in key connection with thefirst fixing rod 30, thefixing block 22 is vertically arranged on the bottom end inside thescreening box 1, thefixing block 22 is arranged in a hollow mode, thefixing block 22 is positioned under thesecond pulley 34, thefirst pulleys 20 are two, the twofirst pulleys 20 are all sleeved on thesecond rolling rod 19, the twofirst pulleys 20 are respectively in key connection with the second rollingrod 19, the diameter of eachfirst pulley 20 is larger than that of eachsecond pulley 34, twopull ropes 21 are provided, the twopull ropes 21 are respectively arranged between the twofirst pulleys 20 and the twosecond pulleys 34, one ends of the twopull ropes 21 are respectively wound on the twofirst pulleys 20, and the other ends of the twopull ropes 21 respectively penetrate through the twofixing blocks 22 and are wound on the twosecond pulleys 34;

an inlet is formed in the upper portion of thescreening box 1, an outlet is formed in one side of thescreening box 1, the outlet is located above thepressing plate 2, a collecting box 36 is arranged on thepressing plate 2, and the collecting box 36 is located below thepressing plate 2.

For precise control of the rotational speed, themotor 5 is a servo motor.

In order to prevent slipping, thefirst bevel gear 7 and thesecond bevel gear 8 are both coated with lubricating oil.

In order to increase the entering amount of the rice, the inlet is of a funnel shape, and the diameter of a nozzle of one end of the inlet close to thescreening box 1 is smaller than that of a nozzle of one end of the inlet far away from thescreening box 1.

In order to rotate smoothly, a bearing seat is arranged at the joint of thefirst fixing rod 30 and the inner wall of thescreening box 1, one end of thefirst fixing rod 30 is positioned in the bearing seat, and thefirst fixing rod 30 is connected with the bearing seat in a sliding manner.

In order to avoid rice accumulation, be equipped with two swash plates 35 on the one side thatclamp plate 2 was kept away from toguard box 12, two swash plates 35 just set up, and the one end thatclamp plate 2 was kept away from to two swash plates 35 supports each other and leans on, and two swash plates 35 are about 6 centrosymmetries of pivot.

In order to conveniently shovel the rice, two sides of thepressing block 14 are provided with sharp blocks.

In order to fix the pull rope, a vertical strip-shaped groove is formed in thefixing block 22, thepull rope 21 penetrates through the strip-shaped groove, and thepull rope 21 is connected with the strip-shaped groove in a sliding mode.

In order to prevent thestring 21 from being broken, thestring 21 is an elastic string.

In order to make the rice slide smoothly, the surface of the inclined plate 35 is a mirror surface.

When the device is used, rice is poured from the inlet, themotor 5 is started, themotor 5 drives the rotatingshaft 6 to rotate, thepush rod 13 rotates around the rotatingshaft 6, thepush rod 13 drives thepressing block 14 to rotate, when thepressing block 14 reaches the bottom, the rice on thepressing plate 2 is shoveled up and then rotates around therotating shaft 6, when the rice is at a certain height, the rice slides down due to the inclination of thepressing block 14, at the moment, the rotatingshaft 6 drives thefirst bevel gear 7 to rotate, because thefirst bevel gear 7 is meshed with thesecond bevel gear 8, thefirst bevel gear 7 drives thesecond bevel gear 8 to rotate, so that the first rollingrod 9 rotates, thefirst rolling rod 9 drives the fan blades 11 to rotate, the rice falling from thepressing block 14 is blown, the rice is separated from impurities, the rotatingshaft 6 drives thefirst roller 16 to rotate simultaneously, thefirst roller 16 drives thesecond roller 18 to rotate through thefirst belt 17, so that thesecond rolling rod 19 rotates, thesecond rolling rod 19 drives thefirst pulley 20 to rotate, thefirst pulley 20 pulls thesecond pulley 34 to rotate through thepull rope 21, so that thefirst fixing rod 30 rotates, thefirst fixing rod 30 drives thethird roller 29 to rotate, thethird roller 29 drives thefourth roller 32 to rotate through thesecond belt 31, so that thesecond fixing rod 33 rotates, thesecond belt 31 drives thefirst magnet 27 to follow the movement when rotating, because thefirst magnet 27 and thesecond magnet 28 attract each other, thefirst magnet 27 drives thesecond magnet 28 to follow the movement of thefirst magnet 27, so that theslide rod 25 slides down along thesupport 23, so that thespring 24 is in a compressed state, theslide rod 25 drives thebrush head 26 to clean thefilter screen 4, when thefirst magnet 27 follows the movement of thesecond belt 31, the movement direction of thefirst magnet 27 is changed, thefirst magnet 27 and thesecond magnet 28 are separated, the restoring force of thespring 24 drives thesecond magnet 28 to rise, so that theslide rod 25 rises, and theslide rod 25 drives thebrush head 26 to rise and restore to the initial position.

The inclined plate 35 is provided to prevent rice from accumulating on theprotection box 12 and to reduce loss of rice by allowing the rice to slide down along the inclined plate 35.

Here, the provision of the strip-shaped groove is mainly to restrict thepulling rope 21 so as to prevent thepulling rope 21 from slipping off the fixedblock 22.

Compared with the prior art, this prevent rice screening installation of jam, can drive briquetting 14 throughmotor 5 and to the shovel that pushes away of rice, then rotate to the whereabouts of high department, make the violent vibrations of rice, thereby it is not hard up to attach to the impurity on the rice, blow to the filter screen by the wind that flabellum 11 formed more easily, thereby remain clean rice,motor 5 can also driveslide bar 25 and rise the decline simultaneously, thereby makebrush head 26 to the washing offilter screen 4, avoid the jam offilter screen 4, improve the screening efficiency.

In light of the foregoing description of the preferred embodiments of the invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The anti-blocking rice screening device is characterized by comprising a screening box (1), two pressing plates (2), two fixing plates (3), two filter screens (4), a rotating mechanism and a cleaning mechanism, wherein the screening box (1) is horizontally arranged, the pressing plates (2), the fixing plates (3), the filter screens (4), the rotating mechanism and the cleaning mechanism are all arranged in the screening box (1), the pressing plates (2) are horizontally arranged in the screening box (1), the two fixing plates (3) are vertically arranged at the top end inside the screening box (1), the filter screens (4) are divided into two parts, the two filter screens (4) are respectively vertically arranged between the two fixing plates (3) and the pressing plates (2), one ends of the filter screens (4) are connected with one ends of the fixing plates (3), the other ends of the filter screens (4) are connected with the pressing plates (2), and the stirring mechanism is positioned between the two filter screens (4), the cleaning mechanism is positioned on one side of the filter screen (4) far away from the stirring mechanism;

the rotating mechanism comprises a motor (5), a rotating shaft (6), a first bevel gear (7), a second bevel gear (8), a first rolling rod (9), a limiting rod (10), fan blades (11), a protection box (12) and a push shovel component, wherein the protection box (12) is arranged on one side of the inner wall of the screening box (1), the protection box (12) is arranged in a hollow manner, the motor (5) is horizontally arranged on one side, close to the protection box (12), of the outer wall of the screening box (1), the rotating shaft (6) is installed on the motor (5), the rotating shaft (6) penetrates through the screening box (1) and is located in the protection box (12), the rotating shaft (6) is in sliding connection with the screening box (1), the rotating shaft (6) is perpendicular to the screening box (1), the first bevel gear (7) is sleeved on one end, far away from the motor (5), of the rotating shaft (6), and the first bevel gear (7) is in key connection with the rotating shaft (6), the number of the first rolling rods (9) is two, the two first rolling rods (9) are horizontally arranged on two sides of the first bevel gear (7) respectively, the number of the second bevel gears (8) is two, the two second bevel gears (8) are sleeved on one end, close to the first bevel gear (7), of the two first rolling rods (9) respectively, the two second bevel gears (8) are connected with the two first rolling rods (9) in a key mode respectively, the fan blades (11) are provided with two pairs, the two pairs of fan blades (11) are sleeved on one end, far away from the first bevel gear (7), of the two first rolling rods (9) respectively, the two pairs of fan blades (11) are in transmission connection with the two first rolling rods (9) respectively, the limiting rods (10) are provided with two numbers, the two limiting rods (10) are sleeved on the two first rolling rods (9) respectively, and the two limiting rods (10) are in sliding connection with the two first rolling rods (9) respectively, two limiting rods (10) are respectively positioned between the two pairs of fan blades (11) and the two second bevel gears (8), one ends of the two limiting rods (10) far away from the two first rolling rods (9) are respectively connected with the pressure plate (2), the number of the push shovel components is two, the two push shovel components are respectively arranged at two sides of the rotating shaft (6), the blade pushing component comprises a push rod (13), a pressing block (14) and a baffle plate (15), the push rod (13) is vertically arranged on one side of the rotating shaft (6), the pressing block (14) is horizontally arranged on one end of the push rod (13) far away from the rotating shaft (6), the two baffles (15) are arranged, the two baffles (15) are respectively arranged on two sides of the pressing block (14), the two baffles (15) are obliquely arranged, and the distance between the two sides of the two baffles (15) respectively far away from the pressing block (14) is smaller than the distance between the two sides of the two baffles (15) respectively close to the pressing block (14);

the cleaning mechanism comprises a transmission component and a cleaning component, the transmission component comprises a first roller (16), a first belt (17), a second roller (18) and a second rolling rod (19), the first roller (16) is sleeved on the rotating shaft (6), the first roller (16) is connected with the rotating shaft (6) in a key mode, the first roller (16) is located between a first bevel gear (7) and a sleeve, the second rolling rod (19) is horizontally arranged on one side of the inner wall of the screening box (1), the second rolling rod (19) is connected with the inner wall of the screening box (1) in a sliding mode, the second rolling rod (19) is located below the pressing plate (2), the second rolling rod (19) is located on the same side of the inner wall of the screening box (1) with the motor (5), the second rolling rod (19) is parallel to the rotating shaft (6), the second roller (18) is sleeved on one end of the second rolling rod (19), the second roller (18) is in key connection with a second rolling rod (19), one end of the belt is sleeved on the first roller (16), the other end of the belt is sleeved on the second roller (18), the first roller (16) is in transmission connection with the second roller (18) through the belt, the number of the cleaning assemblies is two, the two cleaning assemblies are respectively arranged on one side of two filter screens (4) far away from the motor (5), each cleaning assembly comprises a first pulley (20), a pull rope (21), a fixed block (22), a support column (23), a spring (24), a sliding rod (25), a brush head (26), a first magnet (27), a second magnet (28), a third roller (29), a first fixed rod (30), a second belt (31), a fourth roller (32), a second fixed rod (33) and a second pulley (34), and the support column (23) is vertically arranged on the pressing plate (2), the horizontal cover of slide bar (25) is established in one of pillar (23) keeping away from clamp plate (2) and is served, slide bar (25) and pillar (23) sliding connection, brush head (26) sets up and is served near one of slide bar (25) filter screen (4), brush head (26) supports with filter screen (4) and leans on, brush head (26) and filter screen (4) sliding connection, second spring (24) cover is established on pillar (23), second spring (24) are located between slide bar (25) and clamp plate (2), second magnet (28) set up and serve at one of slide bar (25) keeping away from filter screen (4), first dead lever (30) level sets up on screening case (1) inner wall one side, first dead lever (30) is parallel with pivot (6), first dead lever (30) are located one side that pillar (23) kept away from filter screen (4), first dead lever (30) are located screening case (1) inner wall with motor (5) and are homonymy, the first fixing rod (30) is in sliding connection with the inner wall of the screening box (1), the third roller (29) is sleeved on the first fixing rod (30), the third roller (29) is in key connection with the first fixing rod (30), the second fixing rod (33) is horizontally arranged above the first fixing rod (30), the second fixing rod (33) is parallel to the first fixing rod (30), one end of the second fixing rod (33) is connected with one side of the inner wall of the screening box (1), the second fixing rod (33) is in sliding connection with the inner wall of the screening box (1), the fourth roller (32) is sleeved on one end, far away from the inner wall of the screening box (1), of the second fixing rod (33), the fourth roller (32) is in key connection with the second fixing rod (33), one end of the belt is sleeved on the third roller (29), the other end of the belt is sleeved on the fourth roller (32), third gyro wheel (29) are connected through belt and fourth gyro wheel (32) transmission, first magnet (27) set up on the belt is close to one side of filter screen (4), first magnet (27) and second magnet (28) attract each other and lean on, second pulley (34) cover is established on first dead lever (30) keeps away from one end of screening case (1) inner wall, second pulley (34) and first dead lever (30) key-type connection, the vertical setting of fixed block (22) is on screening case (1) inside bottom, fixed block (22) cavity setting, fixed block (22) are located under second pulley (34), first pulley (20) have two, and two first pulley (20) all overlap and establish on second roll pole (19), and two first pulley (20) are connected with second roll pole (19) key-type connection respectively, the diameter of first pulley (20) is greater than the diameter of second pulley (34), two pull ropes (21) are provided, the two pull ropes (21) are respectively arranged between the two first pulleys (20) and the two second pulleys (34), one ends of the two pull ropes (21) are respectively wound on the two first pulleys (20), and the other ends of the two pull ropes (21) respectively penetrate through the two fixed blocks (22) and are wound on the two second pulleys (34);

an inlet is arranged above the screening box (1), an outlet is arranged on one side of the screening box (1), the outlet is located above the pressing plate (2), a collecting box (36) is arranged on the pressing plate (2), and the collecting box (36) is located below the pressing plate (2).

2. The anti-clogging rice screening apparatus as claimed in claim 1, wherein said motor (5) is a servo motor.

3. The anti-clogging rice screening apparatus as claimed in claim 1, wherein said first bevel gear (7) and said second bevel gear (8) are each coated with a lubricating oil.

4. The anti-clogging rice screening apparatus as claimed in claim 1, wherein said inlet is of a funnel type, and the diameter of the nozzle of the inlet at the end close to the screening box (1) is smaller than the diameter of the nozzle at the end remote from the screening box (1).

5. The anti-clogging rice screening apparatus as claimed in claim 1, wherein a bearing seat is provided at a connection position of the first fixing rod (30) and the inner wall of the screening box (1), one end of the first fixing rod (30) is located in the bearing seat, and the first fixing rod (30) is slidably connected with the bearing seat.

6. The anti-clogging rice screening device according to claim 1, wherein two inclined plates (35) are arranged on one side of the protection box (12) away from the pressing plate (2), the two inclined plates (35) are arranged oppositely, one ends of the two inclined plates (35) away from the pressing plate (2) are abutted against each other, and the two inclined plates (35) are centrosymmetric about the rotating shaft (6).

7. The anti-clogging rice sifting apparatus as defined in claim 1, wherein the pressing block (14) is provided with a pointed block at both sides thereof.

8. The anti-clogging rice screening apparatus according to claim 1, wherein the fixing block (22) is provided with a vertical strip-shaped groove, the pulling rope (21) passes through the strip-shaped groove, and the pulling rope (21) is slidably connected with the strip-shaped groove.

9. The anti-clogging rice screening apparatus according to claim 1, wherein said pull cord (21) is a bungee cord.

10. The anti-clogging rice screening apparatus as claimed in claim 6, wherein said inclined plate (35) has a mirror surface.

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