CN112221979A - Rice sieving mechanism - Google Patents

Rice sieving mechanism Download PDF

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Publication number
CN112221979A
CN112221979A CN202011184363.7A CN202011184363A CN112221979A CN 112221979 A CN112221979 A CN 112221979A CN 202011184363 A CN202011184363 A CN 202011184363A CN 112221979 A CN112221979 A CN 112221979A
Authority
CN
China
Prior art keywords
screening
screening box
shaft
mesh belt
vibration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011184363.7A
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Chinese (zh)
Inventor
黎小娜
孙鹏龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lingwu Guilin Rice Industry Co ltd
Original Assignee
Lingwu Guilin Rice Industry Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lingwu Guilin Rice Industry Co ltd filed Critical Lingwu Guilin Rice Industry Co ltd
Priority to CN202011184363.7A priority Critical patent/CN112221979A/en
Publication of CN112221979A publication Critical patent/CN112221979A/en
Pending legal-status Critical Current

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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
    • 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
    • B07B1/10—Screens in the form of endless moving bands
    • 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/02—Arrangement of air or material conditioning accessories
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool

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  • Combined Means For Separation Of Solids (AREA)
  • Adjustment And Processing Of Grains (AREA)

Abstract

The invention provides a rice screening device which comprises a screening box, a screening mechanism of a dust removal mechanism and a support frame, wherein a vertically arranged feeding pipe is arranged at the top of the screening box, the lower end of the feeding pipe is fixedly connected with the screening box and communicated with the screening box, a waste outlet is arranged at the bottom of the screening box, and discharge outlets are arranged on the side walls of two ends of the screening box; the dust removal mechanism is arranged in the feeding pipe; the screening mechanism is arranged in the screening box and is used for screening the rice with various grain sizes; the support frame is arranged at the bottom of the screening box and used for supporting the screening box, and the dust removal mechanism is arranged in the feeding pipe, so that the rice is firstly removed in the feeding pipe, the dust removal effect is good, and the dust removal is thorough; then the rice is carried out the screening many times and is elected the rice of different quality particle diameters through screening mechanism in dropping to the screening incasement from the inlet pipe, and the screening precision is high, and is efficient, and stability is good, and it is convenient to remove.

Description

Rice sieving mechanism
Technical Field
The invention relates to the technical field of rice production, in particular to a rice screening device.
Background
The rice is in process of production, because reap, the polishing, in-process such as sunning, some stones, during sand or metallic impurity etc. sneak into the rice, also can produce many broken rice grains simultaneously, and some rice itself have a problem, the product quality that leads to the rice receives the influence, and produce harmful effects to human health after eating, current rice carries out the excellence and badness screening of the grain of rice through the look selection machine, but the screening effect is not ideal, low efficiency, the breakage rate of the grain of rice is high among the screening process, so wait to solve urgently.
Disclosure of Invention
The invention provides a corn moisture-proof ventilation system, and aims to solve the problems of low screening efficiency, unclean screening, low screening precision, poor stability and high breakage rate of rice grains in the screening process of the existing rice screening equipment.
The invention adopts the following technical scheme:
a rice screening device comprises a screening box, a screening mechanism of a dust removal mechanism and a support frame, wherein a vertically arranged feeding pipe is arranged at the top of the screening box, the lower end of the feeding pipe is fixedly connected with the screening box and communicated with the screening box, a waste outlet is arranged at the bottom of the screening box, and discharge outlets are formed in the side walls of two ends of the screening box; the dust removal mechanism is arranged in the feeding pipe; the screening mechanism is arranged in the screening box and is used for screening rice with various grain sizes; the support frame sets up screening bottom of the case portion is used for supporting the screening case.
The dust removal mechanism comprises a fan, a spiral material guide plate, a dust removal pipe, a first air pipe, a second air pipe and an exhaust fan;
the feeding pipe is concentrically, coaxially and internally sleeved in the feeding pipe, a plurality of first ventilation holes are uniformly distributed in the upper outer wall and the lower outer wall of the dust removing pipe along the circumferential direction, the lower end of the dust removing pipe is fixedly connected with the top wall of the screening box and is connected with the screening motor, and the first vibration motor is connected with and drives the first vibration shaft to rotate and vibrates the first material conveying mesh belt through a first vibration block on the first vibration shaft;
when the first material conveying mesh belt is driven clockwise, the discharging end of the mesh belt on the first material conveying mesh belt is right opposite to the side wall of the screening box, a first rectangular discharging port is formed in the first rectangular discharging port, a first discharging groove is formed in the first rectangular discharging port, one end of the first discharging groove is connected to the bottom of the discharging end of the first material conveying mesh belt and fixedly connected with the side wall of the screening box, and the other end of the first material conveying mesh belt extends downwards obliquely to the outside of the screening box in a.
The second material conveying mesh belt is externally transmitted, anticlockwise transmitted and supported by a second driving shaft and a second driven shaft which are transversely arranged in the screening box through an inner sleeve, two ends of the second driving shaft and two ends of the second driven shaft are both supported by bearings in through holes in the side wall of the screening box, and the end parts of the second driving shaft and the second driven shaft, which extend out of the same side wall of the screening box, are respectively connected and driven by two second driving motors fixed on the side wall of the screening box;
the second vibration shaft is transversely arranged between an upper mesh belt and a lower mesh belt of the second material conveying mesh belt, a plurality of second vibration blocks are fixedly sleeved on the second vibration shaft, two ends of the second vibration shaft are supported by bearings in through holes in two side walls of the screening box, a plurality of second vibration motors are arranged between two second driving motors, and the second vibration motors are connected to drive the second vibration shaft to rotate and vibrate the second material conveying mesh belt through the second vibration blocks on the second vibration shaft;
the utility model discloses a screening case, including first material conveying mesh belt, screening case lateral wall, first material conveying mesh belt, second material conveying mesh belt, screening case lateral wall sets up rectangle discharge gate two, set up discharge chute two in the discharge gate two, two one ends of discharge chute are accepted the defeated material mesh belt of second discharge end bottom and with screening case lateral wall is connected fixedly, and the other end slant downwardly extending extends screening case outside suspension.
The support frame comprises support legs and universal wheels; four the supporting legs are respectively vertically arranged around the bottom of the screening box, the upper ends of the supporting legs are fixedly connected with the bottom of the screening box, and the lower ends of the supporting legs are fixedly connected with the universal wheels.
The first material conveying net belt and the second material conveying net belt are annular transmission belts with screen holes uniformly distributed on the surfaces.
The diameter of the screen mesh of the first material conveying mesh belt is 2.0-3.6mm, preferably 2.0mm, 2.4mm and 3.6 mm; the diameter of the screen mesh of the second material conveying mesh belt is 0.5-1.5mm, preferably 0.5mm, 1.0mm and 1.5 mm.
The diameters of the first ventilation hole of the dust removal pipe, the second ventilation hole of the first air pipe and the meshes of the spiral material guide plate are smaller than 0.5 mm.
The fan, the exhaust fan, the first driving motor, the first vibration motor, the second driving motor and the second vibration motor are controlled by the control system.
The invention has the following advantages:
according to the rice screening device provided by the invention, the dust removing mechanism is arranged in the feeding pipe, so that the rice spirally descends in the feeding pipe along the spiral guide plate, the discharging speed of the rice is slowed down, then the rice is blown to the periphery from the rice discharging surrounding center through the fan, the air pipe I and the air pipe II, the dust doped in the rice is blown into the dust storage cavity and then is discharged through the exhaust fan, the dust removing effect is good, and the dust removing is thorough; the rice falls into the screening box from the feeding pipe and is screened for multiple times by the screening mechanism to obtain the rice with different quality and particle sizes, and the screening precision, the efficiency and the stability are high; the bottom of the screening box adopts a support frame, so that the stability is good and the movement is convenient.
Description of the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic sectional view of a part of the screening box of the present invention.
FIG. 3 is a schematic sectional view of the internal structure of the screening box and the feeding pipe of the present invention.
FIG. 4 is a schematic sectional view of the sieving box and the feeding pipe in the present invention.
FIG. 5 is a left side view of the present invention.
FIG. 6 is a schematic sectional view A-A of FIG. 5 according to the present invention.
FIG. 7 is a rear view of the present invention.
FIG. 8 is a schematic cross-sectional view B-B of FIG. 7 according to the present invention.
Reference numerals:
1-screening box, 11-feeding pipe, 111-dust outlet, 12-waste outlet, 13-discharge port I, 14-discharge port II, 15-discharge slot I, 16-discharge slot II
2-dust removal mechanism, 21-fan, 22-spiral material guide plate, 23-dust removal pipe, 231-faucet, 24-air pipe I, 25-air pipe II
3-screening means, 31-first screening means, 311-first drive motor, 312-first vibration motor, 313-first material-conveying net belt, 314-first driving shaft, 315-first driven shaft, 316-first vibration shaft, 317-first vibration block, 32-second screening means, 321-second drive motor, 322-second vibration motor, 323-second material-conveying net belt, 324-second driving shaft, 325-second driven shaft, 326-second vibration shaft, 327-second vibration block
4-support frame, 41-support leg, 42-universal wheel
5-exhaust fan
The specific implementation mode is as follows:
the following further describes the embodiments of the present invention with reference to the drawings.
Referring to the attached drawings 1-8, the rice screening device comprises a screening box 1, a dust removal mechanism 2, a screening mechanism 3 and a support frame 4, wherein a vertically arranged feeding pipe 11 is arranged at the top of the screening box 1, the lower end of the feeding pipe 11 is fixedly connected with the screening box 1 and communicated with the screening box 1, a waste outlet 12 is arranged at the bottom of the screening box 1, and discharge ports are arranged on the side walls of two ends of the screening box; the dust removing mechanism 2 is arranged inside the feeding pipe 11; the screening mechanism 3 is arranged in the screening box 1 and is used for screening rice with various grain sizes; the support frame 4 sets up screening case 1 bottom is used for supporting screening case 1.
The dust removing mechanism 2 comprises a fan 21, a spiral material guide plate 22, a dust removing pipe 23, a first air pipe 24, a second air pipe 25 and an exhaust fan 112, which are shown in the attached figures 3, 4 and 8;
the dust removal pipe 23 is concentrically and coaxially sleeved in the feed pipe 11, a plurality of first ventilation holes are uniformly distributed in the upper and lower outer walls of the dust removal pipe 23 along the circumferential direction, the lower end of the dust removal pipe 23 is fixedly connected with the top wall of the screening box 1 and communicated with the screening box 1, the upper end of the dust removal pipe 23 is connected with a funnel-shaped receiving port 231, the outer wall of the receiving port 231 is hermetically connected with the upper end of the feed pipe 11, so that a dust storage cavity is formed between the dust removal pipe 23 and the feed pipe 11, the outer wall of the lower end of the feed pipe 11 is provided with a dust outlet 111 communicated with the dust storage cavity, and an exhaust fan 5 is arranged in the dust outlet 111, which is shown in;
the first air pipe 24 is vertically, concentrically and coaxially sleeved in the dust removal pipe 23, a plurality of second vent holes are uniformly distributed in the upper outer wall and the lower outer wall of the first air pipe 24 along the circumferential direction, the upper end of the first air pipe 24 is a closed end, the lower end of the first air pipe extends downwards into the screening box 1 and is communicated with one end of a horizontal second air pipe 25, and the other end of the second air pipe 25 horizontally penetrates through a first through hole formed in the side wall of the screening box 1 to be communicated with an air outlet of a fan 21 fixed on the outer side wall of the screening box 1, see fig. 3, 4 and;
the spiral material guiding plate 22 is a spiral bent plate with meshes distributed on the surface, the spiral material guiding plate 22 is spirally wound on the outer side of the first air pipe 24, the outer spiral side wall of the spiral material guiding plate 22 is tightly attached and connected and fixed with the inner side wall of the dust removing pipe 23, and the inner spiral side wall of the spiral material guiding plate is tightly attached and connected and fixed with the outer side wall of the first air pipe 24, which is shown in the attached drawings 3, 4, 6 and 8.
The screening mechanism 3 comprises a first screening mechanism 31 and a second screening mechanism 32; the first screening mechanism 31 is disposed above the second screening mechanism 32, and the first screening mechanism 31 includes a first driving motor 311, a first vibrating motor 312, a first material conveying belt 313, a first driving shaft 314, a first driven shaft 315, a first vibrating shaft 316, and a first vibrating block 317, see fig. 1-8;
the second screening mechanism 32 includes a second driving motor 321, a second vibrating motor 322, a second material conveying mesh belt 323, a second driving shaft 324, a second driven shaft 325, a second vibrating shaft 326, and a second vibrating block 327.
The first material conveying mesh belt is driven, clockwise conveyed and supported by the first driving shaft 314 and the first driven shaft 315 which are sleeved in the screening box 1 and transversely arranged, two ends of the first driving shaft 314 and the first driven shaft 315 are supported by a bearing in a through hole II on the side wall of the screening box 1, and the end parts of the first driving shaft 314 and the first driven shaft 315 extending out of the same side wall of the screening box 1 are respectively connected and driven by two first driving motors 311 fixed on the outer side wall of the screening box 1, see fig. 3, 4 and 8;
the first vibration shaft 316 is transversely arranged between an upper mesh belt and a lower mesh belt of the first material conveying mesh belt 313, a plurality of first vibration blocks 317 are sleeved outside the first vibration shaft 316, two ends of the first vibration shaft 316 are supported by bearings in through holes in two side walls of the screening box 1, a plurality of first vibration motors 312 are arranged between the two first driving motors 311, and the first vibration motors 312 are connected to drive the first vibration shaft 316 to rotate and vibrate the first material conveying mesh belt 313 through the first vibration blocks 317 on the first vibration shaft 316, which is shown in fig. 3, 4 and 8;
when the first material conveying mesh belt 313 is driven clockwise, the side wall of the screening box 1, which is just opposite to the discharging end of the mesh belt on the first material conveying mesh belt 313, is provided with a rectangular discharging port I13, a discharging chute I15 is arranged in the discharging port I13, one end of the discharging chute I15 is connected to the bottom of the discharging end of the first material conveying mesh belt 313 and is fixedly connected with the side wall of the screening box 1, and the other end of the discharging chute I extends downwards obliquely to the outside of the screening box 1 for suspension, which is shown in attached figures 1.
The second material conveying mesh belt 323 is externally driven, anticlockwise transmitted and supported by the second driving shaft 324 and the second driven shaft 325 which are transversely arranged in the screening box 1 through an inner sleeve, two ends of the second driving shaft 324 and the second driven shaft 325 are supported by a bearing three in a through hole in the side wall of the screening box 1, and the end parts of the second driving shaft 324 and the second driven shaft 325 extending out of the same side wall of the screening box 1 are respectively connected and driven by two second driving motors 321 fixed on the side wall of the screening box 1, see fig. 3, 4 and 8;
the second vibration shaft 326 is transversely arranged between an upper mesh belt and a lower mesh belt of the second material conveying mesh belt 323, a plurality of second vibration blocks 327 are fixed on the second vibration shaft 326 in a sleeved mode, two ends of the second vibration shaft 326 are supported through bearings in through holes in two side walls of the screening box 1, a plurality of second vibration motors 322 are arranged between the two second driving motors 321, and the second vibration motors 322 are connected to drive the second vibration shaft 326 to rotate and vibrate the second material conveying mesh belt 323 through the second vibration blocks 327 on the second vibration shaft 326, which is shown in fig. 3, 4 and 8;
when the second material conveying mesh belt 323 is driven anticlockwise, the side wall of the screening box 1, opposite to the discharging end of the mesh belt on the second material conveying mesh belt 323, is provided with a rectangular discharging port II 14, a discharging chute II 16 is arranged in the discharging port II 14, one end of the discharging chute II 16 is connected and fixed with the bottom of the discharging end of the second material conveying mesh belt 323 and the side wall of the screening box 1, and the other end extends downwards obliquely to the outside of the screening box 1 for suspension, which is shown in attached fig. 1-8.
The support frame 4 comprises support legs 41 and universal wheels 42; the four supporting legs 41 are vertically arranged around the bottom of the screening box 1 respectively, the upper ends of the supporting legs 41 are fixedly connected with the bottom of the screening box 1, and the lower ends of the supporting legs are supported by the universal wheels 42 which are fixedly connected, as shown in the attached drawings 1-8.
The first material conveying mesh belt 313 and the second material conveying mesh belt 323 are ring-shaped transmission belts with mesh holes uniformly distributed on the surface, see fig. 2, 3, 4 and 8.
The diameter of the screen mesh of the first material conveying mesh belt 313 is 2.0-3.6mm, preferably 2.0mm, 2.4mm and 3.6 mm; the diameter of the screen mesh of the second material conveying mesh belt 323 is 0.5-1.5mm, preferably 0.5mm, 1.0mm and 1.5 mm.
The diameters of the first vent hole of the dust removal pipe 23, the second vent hole of the first air pipe 24 and the meshes of the spiral material guide plate 22 are all smaller than 0.5 mm.
The fan 21, the exhaust fan 5, the first driving motor 311, the first vibration motor 312, the second driving motor 321, and the second vibration motor 322 are controlled by a control system.
The working principle is as follows:
firstly, rice is added into the feeding pipe 11 through the receiving opening 231, the rice slowly descends along the spiral material guiding plate 22 in a spiral shape from top to bottom, simultaneously, the fan 21 and the exhaust fan 5 are turned on, wind in the wind pipe 24 blows wind to remove dust on the rice descending on the spiral material guide plate 22 through the vent holes on the side wall, the blown dust is sucked into the dust removing cavity through the vent holes on the dust removing pipe 23 and then is discharged outside through the exhaust fan 5, the rice falls on the first material conveying net belt 313 at the lower end of the feeding pipe 11, the first driving motor 311 drives the first driving shaft 314 and the first driven shaft 315 to rotate, the first material conveying net belt 313 is driven to rotate clockwise, meanwhile, the first vibrating motor 312 drives the first vibrating shaft 316 to drive the first vibrating block 317 to rotate and vibrate the first material conveying mesh belt 313, and the screened rice is conveyed to the discharge end of the first material conveying mesh belt 313, discharged into the first discharge chute 15 through the first discharge port 13 and then collected; rice which is not screened by the first material conveying mesh belt 313 falls onto the second material conveying mesh belt 323, the second driving motor 321 drives the second driving shaft 324 and the second driven shaft 325 to rotate to drive the second material conveying mesh belt 323 to rotate anticlockwise, meanwhile, the second vibrating motor 322 drives the second vibrating shaft 326 to drive the second vibrating block 327 to rotate to vibrate the second material conveying mesh belt 323, and the screened rice is conveyed to the discharging end of the second material conveying mesh belt 323, discharged into the discharging groove II 16 through the discharging hole II 14 and then collected; the impurities not screened by the second mesh belt 323 fall to the bottom of the screening box 1 and are discharged through the waste outlet 12.

Claims (10)

1. A rice screening device, characterized by comprising:
the screening box (1), the top of the screening box (1) is provided with a vertically arranged feeding pipe (11), the lower end of the feeding pipe (11) is fixedly connected with the screening box (1) and communicated with the screening box (1), the bottom of the screening box (1) is provided with a waste outlet (12), and the side walls of two ends are provided with discharge ports;
the dust removal mechanism (2), the dust removal mechanism (2) is arranged inside the feeding pipe (11);
the screening mechanism (3) is arranged in the screening box (1) and is used for screening rice with various particle sizes;
the support frame (4), support frame (4) set up screening case (1) bottom is used for supporting screening case (1).
2. The rice screening device according to claim 1, wherein the dust removing mechanism (2) comprises a fan (21), a spiral material guide plate (22), a dust removing pipe (23), a first air pipe (24), a second air pipe (25) and an exhaust fan (112);
the dust removal pipe (23) is concentrically and coaxially sleeved in the feeding pipe (11), a plurality of ventilation holes I are uniformly distributed in the upper outer wall and the lower outer wall of the dust removal pipe (23) along the circumferential direction, the lower end of the dust removal pipe (23) is fixedly connected with the top wall of the screening box (1) and communicated with the screening box (1), a funnel-shaped receiving port (231) is connected to the upper end of the dust removal pipe (23), the outer wall of the receiving port (231) is in sealing connection with the upper end of the feeding pipe (11) to enable a dust storage cavity to be formed between the dust removal pipe (23) and the feeding pipe (11), a dust outlet (111) is formed in the outer wall of the lower end of the feeding pipe (11) and communicated with the dust storage cavity, and an exhaust fan (5) is arranged;
the dust removal device is characterized in that a first air pipe (24) is vertically, concentrically and coaxially sleeved in the dust removal pipe (23), a plurality of second ventilation holes are uniformly distributed in the upper outer wall and the lower outer wall of the first air pipe (24) along the circumferential direction, the upper end of the first air pipe (24) is a closed end, the lower end of the first air pipe extends downwards into the screening box (1) and is communicated with one end of a second horizontal air pipe (25), and the other end of the second air pipe (25) horizontally penetrates through a first through hole formed in the side wall of the screening box (1) and is communicated with an air outlet of a fan (21) fixed on the outer side wall of;
the spiral material guide plate (22) is a spiral bent plate with meshes fully distributed on the surface, the spiral material guide plate (22) is spirally wound on the outer side of the first air pipe (24), the outer spiral side wall of the spiral material guide plate (22) is tightly attached and connected with the inner side wall of the dust removal pipe (23), and the inner spiral side wall is tightly attached and connected with the outer side wall of the first air pipe (24).
3. The rice screening apparatus according to claim 1, wherein the screening means (3) comprises a first screening means (31), a second screening means (32); the first screening mechanism (31) is arranged above the second screening mechanism (32), and the first screening mechanism (31) comprises a first driving motor (311), a first vibrating motor (312), a first material conveying mesh belt (313), a first driving shaft (314), a first driven shaft (315), a first vibrating shaft (316) and a first vibrating block (317);
the second screening mechanism (32) comprises a second driving motor (321), a second vibrating motor (322), a second material conveying mesh belt (323), a second driving shaft (324), a second driven shaft (325), a second vibrating shaft (326) and a second vibrating block (327).
4. The rice screening device according to claim 3, wherein the first material conveying net belt is driven, conveyed clockwise and supported by a first driving shaft (314) and a first driven shaft (315) which are sleeved in the screening box (1) and transversely arranged, two ends of the first driving shaft (314) and the first driven shaft (315) are supported by a first bearing in a second through hole on the side wall of the screening box (1), and the ends of the first driving shaft (314) and the first driven shaft (315) extending out of the same side wall of the screening box (1) are respectively connected and driven by two first driving motors (311) fixed on the outer side wall of the screening box (1);
the first vibration shaft (316) is transversely arranged between an upper mesh belt and a lower mesh belt of the first material conveying mesh belt (313), a plurality of first vibration blocks (317) are sleeved and fixed on the first vibration shaft (316), two ends of the first vibration shaft (316) are supported through bearings in through holes in two side walls of the screening box (1), a plurality of first vibration motors (312) are arranged between the two first driving motors (311), and the first vibration motors (312) are connected with and drive the first vibration shaft (316) to rotate and vibrate the first material conveying mesh belt (313) through the first vibration blocks (317) on the first vibration shaft (316);
first defeated material guipure (313) discharge end of guipure is just right when clockwise transmission it sets up rectangle discharge gate (13) to screen case (1) lateral wall, set up discharge chute (15) in rectangle discharge gate (13), discharge chute (15) one end is accepted first defeated material guipure (313) discharge end bottom and with screen case (1) lateral wall is connected fixedly, and other end slant downwardly extending extends screen case (1) outside suspension.
5. The rice screening device according to claim 3, wherein the second material conveying mesh belt (323) is externally driven, anticlockwise driven and supported by a second driving shaft (324) and a second driven shaft (325) which are transversely arranged in the screening box (1) in a sleeved mode, two ends of the second driving shaft (324) and the second driven shaft (325) are supported by three bearings in through holes in the side wall of the screening box (1), and the ends of the second driving shaft (324) and the second driven shaft (325) extending out of the same side wall of the screening box (1) are respectively connected and driven by two second driving motors (321) fixed on the side wall of the screening box (1);
the second vibration shaft (326) is transversely arranged between an upper mesh belt and a lower mesh belt of the second material conveying mesh belt (323), a plurality of second vibration blocks (327) are sleeved and fixed on the second vibration shaft (326), two ends of the second vibration shaft (326) are supported by bearings in through holes in two side walls of the screening box (1), a plurality of second vibration motors (322) are arranged between the two second driving motors (321), and the second vibration motors (322) are connected with and drive the second vibration shaft (326) to rotate and vibrate the second material conveying mesh belt (323) through the second vibration blocks (327) on the second vibration shaft (326);
the material conveying mesh belt (323) of second is defeated, and the discharge end of mesh belt is just right on it when anticlockwise transmission screen box (1) lateral wall sets up rectangle discharge gate two (14), set up discharge chute two (16) in discharge gate two (14), discharge chute two (16) one end is accepted the material conveying mesh belt of second (323) discharge end bottom and with screen box (1) lateral wall is connected fixedly, and other end slant downwardly extending extends to screen box (1) outside suspension.
6. A rice screening apparatus as claimed in claim 1, wherein the support frame (4) comprises support legs (41), universal wheels (42); four supporting legs (41) are respectively vertically arranged around the bottom of the screening box (1), the upper ends of the supporting legs (41) are fixedly connected with the bottom of the screening box (1), and the lower ends of the supporting legs are fixedly connected with universal wheels (42) for supporting.
7. The rice screening apparatus as claimed in claim 3, wherein the first mesh belt (313) and the second mesh belt (323) are endless belts having mesh holes uniformly distributed on the surface.
8. The rice screening apparatus as claimed in claim 7, wherein the first mesh belt (313) has mesh holes with a diameter of 2.0 to 3.6 mm; the diameter of the screen mesh of the second material conveying mesh belt (323) is 0.5-1.5 mm.
9. The rice screening apparatus as claimed in claim 2, wherein the first vent hole of the dust removing duct (23), the second vent hole of the first air duct (24), and the mesh diameter of the spiral material guide plate (22) are all less than 0.5 mm.
10. The rice screening apparatus as claimed in claim 2, wherein the fan (21), the exhaust fan (5), the first driving motor (311), the first vibration motor (312), the second driving motor (321), and the second vibration motor (322) are controlled by a control system.
CN202011184363.7A 2020-10-28 2020-10-28 Rice sieving mechanism Pending CN112221979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011184363.7A CN112221979A (en) 2020-10-28 2020-10-28 Rice sieving mechanism

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106607359A (en) * 2016-12-28 2017-05-03 郑州吉音动漫科技有限公司 A traditional Chinese medicinal material cleaning, drying and screening device
CN206535759U (en) * 2017-01-12 2017-10-03 天津惠尔稼种业科技有限公司 A kind of Novel seed removal of impurities screening machine
CN206887279U (en) * 2017-04-18 2018-01-16 枣阳市万通棉纺实业有限公司 A kind of scutching cotton removes micronic dust device
CN107583870A (en) * 2017-09-16 2018-01-16 广东骏驰科技股份有限公司 One kind is based on screening machine anti-batch mixing postsearch screening retracting device
CN208554917U (en) * 2018-07-05 2019-03-01 福建浦之玉米业有限公司 Packaged type rice conveyer
CN110238057A (en) * 2019-07-01 2019-09-17 东营市垦利区万隆农林经贸有限公司 A kind of rice screening plant of the rice production with dedusting function
CN111112083A (en) * 2019-12-25 2020-05-08 应元芬 Vertical secondary dust collector for corn processing
CN211190995U (en) * 2019-12-05 2020-08-07 青岛昌德顺米业股份有限公司 Energy-saving grading and fine screening device for processing selenium-enriched rice

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106607359A (en) * 2016-12-28 2017-05-03 郑州吉音动漫科技有限公司 A traditional Chinese medicinal material cleaning, drying and screening device
CN206535759U (en) * 2017-01-12 2017-10-03 天津惠尔稼种业科技有限公司 A kind of Novel seed removal of impurities screening machine
CN206887279U (en) * 2017-04-18 2018-01-16 枣阳市万通棉纺实业有限公司 A kind of scutching cotton removes micronic dust device
CN107583870A (en) * 2017-09-16 2018-01-16 广东骏驰科技股份有限公司 One kind is based on screening machine anti-batch mixing postsearch screening retracting device
CN208554917U (en) * 2018-07-05 2019-03-01 福建浦之玉米业有限公司 Packaged type rice conveyer
CN110238057A (en) * 2019-07-01 2019-09-17 东营市垦利区万隆农林经贸有限公司 A kind of rice screening plant of the rice production with dedusting function
CN211190995U (en) * 2019-12-05 2020-08-07 青岛昌德顺米业股份有限公司 Energy-saving grading and fine screening device for processing selenium-enriched rice
CN111112083A (en) * 2019-12-25 2020-05-08 应元芬 Vertical secondary dust collector for corn processing

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