CN111644383B - Screening device for rice processing and working method thereof - Google Patents
Screening device for rice processing and working method thereof Download PDFInfo
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- CN111644383B CN111644383B CN202010531745.6A CN202010531745A CN111644383B CN 111644383 B CN111644383 B CN 111644383B CN 202010531745 A CN202010531745 A CN 202010531745A CN 111644383 B CN111644383 B CN 111644383B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/08—Screens rotating within their own plane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
- B07B1/26—Revolving drums with additional axial or radial movement of the drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
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- Adjustment And Processing Of Grains (AREA)
Abstract
The invention discloses screening equipment for rice processing, which comprises a bottom plate, a mounting plate and a supporting plate, wherein the mounting plate is fixed at the top of the bottom plate, the supporting plate is arranged at one side of the top of the bottom plate, which is positioned at the mounting plate, and is fixedly connected with the bottom plate, a screening cylinder is arranged above the bottom plate, the screening cylinder is positioned between the mounting plate and the supporting plate, and a placing groove is formed in the top of the bottom plate, which is positioned below the screening cylinder; the screening device comprises a mounting plate, a screening motor, a screening plate, a driving motor, a sliding rod, a loop bar and a telescopic spring, wherein the mounting plate is provided with a screening groove at the top, the mounting plate is internally provided with the screening groove, the bottom end of the screening groove is communicated with the screening groove, the mounting plate is internally fixed with the screening motor, and the screening plate is arranged in the screening groove.
Description
Technical Field
The invention relates to a screening device, in particular to screening equipment for rice processing and a working method thereof, and belongs to the technical field of rice processing application.
Background
The rice is a finished product prepared by rice through the working procedures of cleaning, hulling, rice milling, finishing of finished products and the like, contains nearly 64 percent of nutrient substances in the rice and more than 90 percent of nutrient elements required by human bodies, is a main food for people in most regions of China, and mainly comprises the following steps: raw rice purchase → screening (various impurities) → stone removal → magnetic separation → rice hulling (paddy, broken brown rice) → brown rice separation (mixture of paddy and brown rice) → thickness classification → rice milling (rice bran) → white rice classification → color sorting → polishing → white rice classification → finished product packaging, wherein a screening device is used in many steps of rice processing to screen the rice.
Chinese patent publication No. CN205253549U discloses a sawdust screening device for producing activated carbon, which is provided with two screening devices, not only high efficiency but also good screening effect during the screening process, but also unable to be applied to the screening of rice, and meanwhile, unable to be cleaned quickly when the screening holes are blocked, and unable to be screened for many times, and screening in multiple directions.
Disclosure of Invention
The invention aims to provide screening equipment for rice processing and a working method thereof, wherein primary screening is carried out through a screening hole, a connecting column and an arc-shaped rod are driven to rotate by a screening motor so as to stir rice in a screening groove, a screening mesh screens the moving rice for the first time, the structure is simple, the operation is convenient, the rice is rapidly screened, the working efficiency is improved, a limiting block moves back and forth in the limiting groove through the arrangement of the limiting block and the limiting spring, so that the rice in the screening hole is jacked into a blanking groove, the problem that the screening hole is blocked by the rice in the prior art cannot be solved, the problem that the screening speed is reduced due to the blocking of the screening hole is avoided, the screening speed is increased, the working efficiency is improved, the rotating rod and the screening cylinder are driven to rotate by a driving motor so that the screening cylinder screens the rice for the second time, thereby increase the quality of screening, increase the quality guarantee of screening, improve work efficiency, through the produced vibration of driving motor work, thereby make the connecting block produce a decurrent power, under slide bar, loop bar and expanding spring's the mutually supporting, make connecting block up-and-down motion, thereby drive a sieve tube up-and-down motion, solve among the prior art and can't carry out the problem of screening many times to the rice, increase screening effect, improve work efficiency.
The purpose of the invention can be realized by the following technical scheme: a screening device for rice processing comprises a bottom plate, a mounting plate and a supporting plate, wherein the mounting plate is fixed at the top of the bottom plate, the supporting plate is arranged at one side, located on the mounting plate, of the top of the bottom plate, the supporting plate is fixedly connected with the bottom plate, a screening cylinder is arranged above the bottom plate and located between the mounting plate and the supporting plate, and a placing groove is formed in the position, located below the screening cylinder, of the top of the bottom plate;
the screening device is characterized in that a feeding groove is formed in the top of the mounting plate, a screening groove is formed in the mounting plate, the bottom end of the feeding groove is communicated with the screening groove, a screening motor is fixed in the mounting plate, a screening plate is arranged in the screening groove, and the end part of an output shaft of the screening motor is fixedly connected with the bottom of the screening plate;
screening holes are formed in the bottom of the screening groove at equal intervals, limiting grooves are formed in the bottom of the screening plate at equal intervals, limiting blocks are arranged in the limiting grooves and are connected in the limiting grooves in a sliding mode, limiting springs are arranged in the limiting grooves, two ends of each limiting spring are fixedly connected with the screening plate and the corresponding limiting block respectively, a discharging groove is formed in the mounting plate and located right below the screening groove, and the discharging groove is communicated with the placing groove;
a blanking plate is arranged in the mounting plate, one end of the blanking plate is arranged in the screening groove, the blanking plate is rotatably connected with the side wall of the screening groove through a hinge, and the other end of the blanking plate penetrates through the side wall of the mounting plate and is arranged in the screening cylinder; the screening machine is characterized in that connecting grooves are symmetrically formed in one side, close to a screening cylinder, of the mounting plate and one side, close to the screening cylinder, of the supporting plate, connecting blocks are connected in the connecting grooves in a sliding mode, a driving motor is fixed in one connecting block, annular plates are symmetrically arranged at two ends of the screening cylinder, the outer side wall of each annular plate is fixedly connected with the inner side wall of the screening cylinder, a rotating rod is arranged in the screening cylinder, a plurality of fixing rods are symmetrically arranged in the screening cylinder, two ends of each fixing rod are fixedly connected with the rotating rod and the inner wall of the screening cylinder respectively, two ends of each rotating rod penetrate through two side walls of the screening cylinder respectively and are arranged in the corresponding connecting blocks, the end portion of each rotating rod is; the screening plate consists of a connecting column and arc-shaped rods, the bottom end of the connecting column is rotatably connected in the screening groove through a bearing, the end part of an output shaft of the screening motor penetrates through the side wall of the screening groove and is fixedly connected with the bottom end of the connecting column, and the arc-shaped rods are fixed on the outer side of the connecting column at equal angles; stabilizing blocks are symmetrically fixed on two sides of the limiting block, stabilizing grooves are symmetrically formed in two sides of the limiting groove, and the stabilizing blocks are connected in the stabilizing grooves in a sliding mode; the top of the blanking plate is provided with a convex block which is movably connected with the blanking plate, the inner wall of one annular plate is provided with an annular chute, and one end of the convex block, which is far away from the blanking plate, is connected in the annular chute in a sliding manner; the top and the bottom of the connecting block are symmetrically fixed with fixed blocks, the top and the bottom of the connecting block are symmetrically provided with adjusting mechanisms, and two ends of each adjusting mechanism are respectively rotatably connected with the fixed blocks and the side walls of the connecting grooves; the adjusting mechanism comprises a loop bar, a sliding rod, a telescopic spring and a baffle plate, wherein one end of the loop bar is rotatably connected with the corresponding side wall of the connecting groove, the other end of the loop bar is provided with a sliding groove, the sliding rod and the baffle plate are slidably connected in the sliding groove, one end of the baffle plate is fixedly connected with one end of the sliding rod, the telescopic spring is arranged in the sliding groove, two ends of the telescopic spring are respectively fixedly connected with the loop bar and the baffle plate, and one end of the sliding rod, far away from the baffle plate, penetrates through the side wall of the;
a working method of screening equipment for rice processing specifically comprises the following steps:
the method comprises the following steps: pouring rice from the upper part of the feeding groove, so that the rice enters the screening groove, starting the screening motor, driving the connecting column to rotate by the screening motor, and driving the rice to move by rotating the arc-shaped rods fixed at equal angles outside the connecting column, and performing primary screening through the screening holes;
step two: when the arc-shaped rod rotates, the limiting blocks are in contact with the bottom of the screening groove, so that the side walls of the bottom of the screening groove push the limiting blocks to enter the limiting grooves, the limiting springs are compressed, when the arc-shaped rod drives the limiting blocks to be arranged right opposite to the screening holes, the acting force of the limiting blocks at the bottom of the screening groove disappears, and the limiting blocks move towards the corresponding screening holes under the elastic force of the limiting springs, so that the rice clamped in the screening holes is pushed into the discharging groove;
step three: the arc-shaped rods drive the rice to move, when the rice moves to the position of the blanking plate, the rice moves into the screening cylinder through the blanking plate, the driving motor starts to work so as to drive the rotating rods to rotate, and the rotating rods are fixedly connected with the screening cylinder through the fixing rods so as to rotate the screening cylinder, so that the rice moves in the screening cylinder and is screened secondarily;
step four: when driving motor drives the sieve tube pivoted, can produce a vibrations power, thereby drive connecting block downstream, thereby make the fixed block that is located the connecting block below extrude the slide bar downwards, because the slide bar rotates with the fixed block to be connected, the sleeve rotates with the spread groove lateral wall to be connected, slide bar and loop bar sliding connection, make the slide bar towards the loop bar internal motion, the connecting block downstream, thereby compress expanding spring, make expanding spring have a reverse elasticity, thereby promote the slide bar motion out the loop bar, reverse promotion connecting block upward movement, thereby realize connecting block and the holistic up-and-down motion of sieve tube, screen.
Compared with the prior art, the invention has the beneficial effects that:
1. when the rice screening machine is used, rice is poured from the upper portion of the feeding groove, so that the rice enters the screening groove, the screening motor is started, the screening motor drives the connecting column to rotate, the arc-shaped rods fixed at equal angles on the outer side of the connecting column rotate, the rice is driven to move, screening is carried out for the first time through the screening holes, the connecting column and the arc-shaped rods are driven to rotate through the screening motor, so that the rice in the screening groove is stirred, the screening meshes are used for screening the moving rice for the first time, the structure is simple, the operation is convenient, the rice is rapidly screened, and the working efficiency is improved.
2. When the arc pole rotates, thereby the stopper makes the screening tank bottom lateral wall promote the stopper and enters into the spacing inslot with screening tank bottom contact, compress spacing spring, drive the stopper when just setting up the screening hole when the arc pole, the effort of the stopper of screening tank bottom disappears, the stopper is at the downthehole motion of screening that corresponds under spacing spring's spring action, thereby in pushing up the rice that blocks in the screening hole and going into the unloading inslot, setting through stopper and spacing spring, make the stopper at the spacing inslot back and forth movement, thereby make the rice in the screening hole by pushing up in the unloading inslot, avoid screening hole to block up the problem that causes screening speed to reduce, increase the speed of screening, thereby work efficiency is improved.
3. The arc pole drives the rice motion, when the rice moves lower flitch position, make the rice move to the screen cylinder in through lower flitch, driving motor begins work, thereby drive the bull stick and rotate, because the bull stick passes through dead lever fixed connection with the screen cylinder, make the screen cylinder rotate, thereby make the rice move in the screen cylinder, carry out the secondary screening to the rice, drive bull stick and screen cylinder through driving motor and rotate, make the screen cylinder carry out the secondary screening to the rice, thereby increase the quality of screening, increase the quality guarantee of screening, and the work efficiency is improved.
4. The driving motor drives the screening cylinder to rotate, and simultaneously generates a vibration force, so as to drive the connecting block to move downwards, so that the fixed block below the connecting block downwards extrudes the sliding rod, the sliding rod is rotationally connected with the fixed block, the sleeve is rotationally connected with the side wall of the connecting groove, the sliding rod is slidably connected with the loop bar, so that the sliding rod moves towards the inside of the loop bar, the connecting block moves downwards, so as to compress the telescopic spring, so that the telescopic spring has a reverse elastic force, so as to push the sliding rod to move out of the loop bar, and reversely push the connecting block to move upwards, so as to realize the up-and-down motion of the connecting block and the screening cylinder, and carry out screening, so that the connecting block generates a downward force through the vibration generated by the work of the driving motor, under the mutual matching of the sliding rod, the loop, increase screening effect, improve work efficiency.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic perspective view of a screen cylinder according to the present invention;
FIG. 3 is a schematic view of the internal connection structure of the screen cylinder according to the present invention;
FIG. 4 is a schematic cross-sectional view of the present invention;
FIG. 5 is an enlarged view of the area A of the present invention;
FIG. 6 is an enlarged view of the area B of the present invention;
FIG. 7 is an enlarged view of the area C of the present invention;
FIG. 8 is a schematic diagram of a screening plate structure according to the present invention.
In the figure: 1. a base plate; 2. mounting a plate; 3. a feeding trough; 4. a screening cylinder; 5. a support plate; 6. a placement groove; 7. an annular plate; 8. a rotating rod; 9. fixing the rod; 10. a screening tank; 11. screening the plate; 12. a discharging groove; 13. screening motors; 14. connecting blocks; 15. an adjustment mechanism; 16. a tension spring; 17. connecting grooves; 18. a fixed block; 19. a bump; 20. a blanking plate; 21. an annular chute; 22. a limiting spring; 23. a limiting groove; 24. a stabilizing block; 25. a limiting block; 26. a screening well; 27. a stabilizing slot; 28. an arcuate bar; 29. connecting columns; 30. a slide bar; 31. a baffle plate; 32. a chute; 33. a loop bar; 34. the motor is driven.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, a screening device for rice processing comprises a bottom plate 1, a mounting plate 2 and a supporting plate 5, wherein the mounting plate 2 is fixed on the top of the bottom plate 1, the supporting plate 5 is arranged on one side of the top of the bottom plate 1, which is located on the mounting plate 2, the supporting plate 5 is fixedly connected with the bottom plate 1, a screening cylinder 4 is arranged above the bottom plate 1, and the screening cylinder 4 is located between the mounting plate 2 and the supporting plate 5;
the top of the mounting plate 2 is provided with a feeding groove 3, the mounting plate 2 is internally provided with a screening groove 10, the bottom end of the feeding groove 3 is communicated with the screening groove 10, a screening motor 13 is fixed inside the mounting plate 2, a screening plate 11 is arranged in the screening groove 10, the screening plate 11 consists of a connecting column 29 and an arc-shaped rod 28, the bottom end of the connecting column 29 is rotatably connected in the screening groove 10 through a bearing, the end part of an output shaft of the screening motor 13 penetrates through the side wall of the screening groove 10 and is fixedly connected with the bottom end of the connecting column 29, and the arc-shaped rod 28 is fixed on the outer side of the connecting;
screening holes 26 are equidistantly formed in the bottom of the screening groove 10, limiting grooves 23 are equidistantly formed in the bottoms of the arc-shaped rods 28, limiting blocks 25 are arranged in the limiting grooves 23, the limiting blocks 25 are connected in the limiting grooves 23 in a sliding mode, limiting springs 22 are arranged in the limiting grooves 23, two ends of each limiting spring 22 are fixedly connected with the arc-shaped rods 28 and the corresponding limiting blocks 25 respectively, stabilizing blocks 24 are symmetrically fixed to two sides of each limiting block 25, stabilizing grooves 27 are symmetrically formed in two sides of each limiting groove 23, and the stabilizing blocks 24 are connected in the stabilizing grooves 27 in a sliding mode;
a blanking plate 20 is arranged in the mounting plate 2, one end of the blanking plate 20 is arranged in the screening groove 10, the blanking plate 20 is rotatably connected with the side wall of the screening groove 10 through a hinge, the other end of the blanking plate 20 penetrates through the side wall of the mounting plate 2 and is arranged in the screening cylinder 4, a convex block 19 is arranged at the top of the blanking plate 20, and the convex block 19 is movably connected with the blanking plate 20;
the mounting plate 2 and the support plate 5 are symmetrically provided with connecting grooves 17 at one side close to the screening cylinder 4, the connecting grooves 17 are connected with connecting blocks 14 in a sliding manner, a driving motor 34 is fixed in one connecting block 14, the two ends of the screening cylinder 4 are symmetrically provided with annular plates 7, the outer side wall of each annular plate 7 is fixedly connected with the inner side wall of the screening cylinder 4, the inner wall of one annular plate 7 is provided with an annular chute 21, one end, away from the blanking plate 20, of the lug 19 is connected in the annular chute 21 in a sliding manner, a rotating rod 8 is arranged in the screening cylinder 4, a plurality of fixing rods 9 are symmetrically arranged in the screening cylinder 4, the two ends of each fixing rod 9 are respectively fixedly connected with the rotating rod 8 and the inner wall of the screening cylinder 4, the two ends of each rotating rod 8 respectively penetrate through the two side walls of the screening cylinder 4 and are arranged in the, the end part of the output shaft of the driving motor 34 is fixedly connected with one end of the rotating rod 8;
fixed blocks 18 are symmetrically fixed at the top and the bottom of the connecting block 14, loop bars 33 are symmetrically arranged at the top and the bottom of the connecting block 14, one end of each loop bar 33 is rotatably connected with the corresponding side wall of the connecting groove 17, a sliding groove 32 is formed in the other end of each loop bar 33, a sliding rod 30 and a baffle 31 are slidably connected in each sliding groove 32, one end of each baffle 31 is fixedly connected with one end of each sliding rod 30, a telescopic spring 16 is arranged in each sliding groove 32, two ends of each telescopic spring 16 are respectively and fixedly connected with the loop bars 33 and the baffles 31, and one end of each sliding rod 30, far away from the corresponding baffle 31, penetrates through the side wall of each loop bar 33;
a placing groove 6 is formed in the top of the bottom plate 1 and located below the screening cylinder 4, a discharging groove 12 is formed in the mounting plate 2 and located right below the screening groove 10, the discharging groove 12 is communicated with the placing groove 6, and a rotating door plate is mounted on the outer side of the screening cylinder 4;
a working method of screening equipment for rice processing specifically comprises the following steps:
the method comprises the following steps: rice is poured into the screening groove 10 from the upper side of the feeding groove 3, so that the rice enters the screening groove, the screening motor 13 is started, the screening motor 13 drives the connecting column 29 to rotate, the arc-shaped rods 28 fixed at equal angles outside the connecting column 29 rotate, the rice is driven to move, and primary screening is carried out through the screening holes 26;
step two: when the arc-shaped rod 28 rotates, the limiting blocks 25 are contacted with the bottom of the screening groove 10, so that the side walls of the bottom of the screening groove 10 push the limiting blocks 25 to enter the limiting grooves 23, the limiting springs 22 are compressed, when the arc-shaped rod 28 drives the limiting blocks 25 to be arranged right opposite to the screening holes 26, the acting force of the limiting blocks 25 at the bottom of the screening groove 10 disappears, the limiting blocks 25 move towards the corresponding screening holes 26 under the elastic force action of the limiting springs 22, and therefore the rice clamped in the screening holes 26 is pushed into the blanking groove 12;
step three: the arc-shaped rods 28 drive the rice to move, when the rice moves to the position of the blanking plate 20, the rice moves into the screening cylinder 4 through the blanking plate 20, the driving motor 34 starts to work, so that the rotating rods 8 are driven to rotate, and the screening cylinder 4 rotates due to the fact that the rotating rods 8 are fixedly connected with the screening cylinder 4 through the fixing rods 9, so that the rice moves in the screening cylinder 4, and secondary screening is conducted on the rice;
step four: driving motor 34 drives the screening cylinder 4 pivoted in, can produce a vibrations power, thereby drive connecting block 14 downstream, thereby make the fixed block 18 that is located the connecting block 14 below extrude slide bar 30 downwards, because slide bar 30 rotates with fixed block 18 to be connected, the sleeve rotates with the connecting groove 17 lateral wall to be connected, slide bar 30 and loop bar 33 sliding connection, make slide bar 30 towards loop bar 33 internal motion, connecting block 14 downstream, thereby compress expanding spring 16, make expanding spring 16 have a reverse elasticity, thereby promote slide bar 30 and move out loop bar 33, reverse promotion connecting block 14 upward movement, thereby realize connecting block 14 and the holistic up-and-down motion of screening cylinder 4, screen.
The working principle is as follows: when the rice screening machine is used, firstly, rice is poured into the rice screening groove 10 from the upper side of the feeding groove 3, the screening motor 13 is started, the screening motor 13 drives the connecting column 29 to rotate, the arc-shaped rods 28 fixed at equal angles on the outer side of the connecting column 29 rotate, the rice is driven to move, and primary screening is carried out through the screening holes 26; when the arc-shaped rod 28 rotates, the limiting blocks 25 are contacted with the bottom of the screening groove 10, so that the side walls of the bottom of the screening groove 10 push the limiting blocks 25 to enter the limiting grooves 23, the limiting springs 22 are compressed, when the arc-shaped rod 28 drives the limiting blocks 25 to be arranged right opposite to the screening holes 26, the acting force of the limiting blocks 25 at the bottom of the screening groove 10 disappears, the limiting blocks 25 move towards the corresponding screening holes 26 under the elastic force action of the limiting springs 22, and therefore the rice clamped in the screening holes 26 is pushed into the blanking groove 12; the arc-shaped rods 28 drive the rice to move, when the rice moves to the position of the blanking plate 20, the rice moves into the screening cylinder 4 through the blanking plate 20, the driving motor 34 starts to work, so that the rotating rods 8 are driven to rotate, and the screening cylinder 4 rotates due to the fact that the rotating rods 8 are fixedly connected with the screening cylinder 4 through the fixing rods 9, so that the rice moves in the screening cylinder 4, and secondary screening is conducted on the rice; driving motor 34 drives the screening cylinder 4 pivoted in, can produce a vibrations power, thereby drive connecting block 14 downstream, thereby make the fixed block 18 that is located the connecting block 14 below extrude slide bar 30 downwards, because slide bar 30 rotates with fixed block 18 to be connected, the sleeve rotates with the connecting groove 17 lateral wall to be connected, slide bar 30 and loop bar 33 sliding connection, make slide bar 30 towards loop bar 33 internal motion, connecting block 14 downstream, thereby compress expanding spring 16, make expanding spring 16 have a reverse elasticity, thereby promote slide bar 30 and move out loop bar 33, reverse promotion connecting block 14 upward movement, thereby realize connecting block 14 and the holistic up-and-down motion of screening cylinder 4, screen.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (2)
1. The utility model provides a screening installation for rice processing which characterized in that: the screening machine comprises a bottom plate (1), a mounting plate (2) and a supporting plate (5), wherein the mounting plate (2) is fixed at the top of the bottom plate (1), the supporting plate (5) is arranged at one side, located on the mounting plate (2), of the top of the bottom plate (1), the supporting plate (5) is fixedly connected with the bottom plate (1), a screening drum (4) is arranged above the bottom plate (1), the screening drum (4) is located between the mounting plate (2) and the supporting plate (5), and a placing groove (6) is formed in the position, located below the screening drum (4), of the top of the bottom plate (1); the top of the mounting plate (2) is provided with a feeding groove (3), a screening groove (10) is formed in the mounting plate (2), the bottom end of the feeding groove (3) is communicated with the screening groove (10), a screening motor (13) is fixed in the mounting plate (2), a screening plate (11) is arranged in the screening groove (10), and the end part of an output shaft of the screening motor (13) is fixedly connected with the bottom of the screening plate (11); screening holes (26) are formed in the bottom of the screening groove (10) at equal intervals, limiting grooves (23) are formed in the bottom of the screening plate (11) at equal intervals, limiting blocks (25) are arranged in the limiting grooves (23), the limiting blocks (25) are connected in the limiting grooves (23) in a sliding mode, limiting springs (22) are arranged in the limiting grooves (23), two ends of each limiting spring (22) are fixedly connected with the screening plate (11) and the corresponding limiting block (25) respectively, a discharging groove (12) is formed in the mounting plate (2) and located under the screening groove (10), and the discharging groove (12) is communicated with the placing groove (6); a blanking plate (20) is arranged in the mounting plate (2), one end of the blanking plate (20) is arranged in the screening groove (10), the blanking plate (20) is rotatably connected with the side wall of the screening groove (10) through a hinge, and the other end of the blanking plate (20) penetrates through the side wall of the mounting plate (2) and is arranged in the screening cylinder (4); the screening machine is characterized in that a connecting groove (17) is symmetrically formed in one side, close to the screening cylinder (4), of the mounting plate (2) and the support plate (5), connecting blocks (14) are connected in the connecting groove (17) in a sliding mode, a driving motor (34) is fixed in one connecting block (14), annular plates (7) are symmetrically arranged at two ends of the screening cylinder (4), the outer side wall of each annular plate (7) is fixedly connected with the inner side wall of the screening cylinder (4), a rotating rod (8) is arranged in the screening cylinder (4), a plurality of fixing rods (9) are symmetrically arranged in the screening cylinder (4), two ends of each fixing rod (9) are fixedly connected with the rotating rod (8) and the inner wall of the screening cylinder (4) respectively, two ends of each rotating rod (8) penetrate through two side walls of the screening cylinder (4) respectively and are arranged in the corresponding connecting blocks (14), and the end portions of the rotating rods (, the screening device is characterized in that the end part of an output shaft of the driving motor (34) is fixedly connected with one end of the rotating rod (8), the screening plate (11) is composed of a connecting column (29) and an arc-shaped rod (28), the bottom end of the connecting column (29) is rotatably connected into the screening groove (10) through a bearing, the end part of the output shaft of the screening motor (13) penetrates through the side wall of the screening groove (10) and is fixedly connected with the bottom end of the connecting column (29), the arc-shaped rod (28) is fixed on the outer side of the connecting column (29) at an equal angle, stabilizing blocks (24) are symmetrically fixed on two sides of the limiting block (25), stabilizing grooves (27) are symmetrically formed on two sides of the limiting groove (23), and the stabilizing blocks (24; the top of the blanking plate (20) is provided with a convex block (19), the convex block (19) is movably connected with the blanking plate (20), the inner wall of one annular plate (7) is provided with an annular sliding groove (21), and one end, far away from the blanking plate (20), of the convex block (19) is connected in the annular sliding groove (21) in a sliding manner; the top and the bottom of connecting block (14) are symmetrically fixed with fixed block (18), the top and the bottom of connecting block (14) are symmetrically provided with adjusting mechanism (15), and the two ends of adjusting structure are respectively rotationally connected with fixed block (18) and connecting groove (17) side wall, adjusting mechanism (15) is composed of loop bar (33), slide bar (30), expansion spring (16) and baffle (31), one end of loop bar (33) is rotationally connected with the corresponding side wall of connecting groove (17), slide groove (32) is opened at the other end of loop bar (33), slide bar (30) and baffle (31) are slidably connected in slide groove (32), one end of baffle (31) is fixedly connected with one end of slide bar (30), expansion spring (16) is arranged in slide groove (32), the two ends of expansion spring (16) are respectively fixedly connected with loop bar (33) and baffle (31), one end of the sliding rod (30) far away from the baffle (31) penetrates through the side wall of the sleeve rod (33) to be rotatably connected with the fixed block (18).
2. The rice screening method of the screening apparatus for rice processing according to claim 1, wherein the rice screening method comprises the specific operating steps of:
the method comprises the following steps: pouring the rice from the upper part of the feeding groove (3), so that the rice enters the screening groove (10), starting the screening motor (13), driving the connecting column (29) to rotate by the screening motor (13), and driving the arc-shaped rods (28) fixed at equal angles outside the connecting column (29) to rotate, thereby driving the rice to move, and screening for the first time through the screening holes (26);
step two: when the arc-shaped rod (28) rotates, the limiting block (25) is in contact with the bottom of the screening groove (10) so that the side wall of the bottom of the screening groove (10) pushes the limiting block (25) to enter the limiting groove (23), the limiting spring (22) is compressed, when the arc-shaped rod (28) drives the limiting block (25) to be arranged right opposite to the screening hole (26), the acting force of the limiting block (25) at the bottom of the screening groove (10) disappears, the limiting block (25) moves towards the corresponding screening hole (26) under the elastic action of the limiting spring (22), and therefore rice clamped in the screening hole (26) is pushed into the blanking groove (12);
step three: the arc-shaped rods (28) drive the rice to move, when the rice moves to the position of the blanking plate (20), the rice moves into the screening cylinder (4) through the blanking plate (20), the driving motor (34) starts to work, so that the rotating rods (8) are driven to rotate, and the rotating rods (8) are fixedly connected with the screening cylinder (4) through the fixing rods (9), so that the screening cylinder (4) rotates, the rice moves in the screening cylinder (4), and the rice is screened secondarily;
step four: driving motor (34) drive sieve tube (4) pivoted in, can produce a vibrations power, thereby drive connecting block (14) downstream, thereby make fixed block (18) that is located connecting block (14) below extrude slide bar (30) downwards, because slide bar (30) rotate with fixed block (18) and be connected, the sleeve rotates with spread groove (17) lateral wall and is connected, slide bar (30) and loop bar (33) sliding connection, make slide bar (30) towards loop bar (33) inner motion, connecting block (14) downstream, thereby compress expanding spring (16), make expanding spring (16) have a reverse elasticity, thereby promote slide bar (30) and move out loop bar (33), reverse promotion connecting block (14) upward movement, thereby realize connecting block (14) and the holistic up-and-down motion of sieve tube (4), carry out the screening.
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