CN110918444B - Cereal sieving and stoning machine - Google Patents
Cereal sieving and stoning machine Download PDFInfo
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- CN110918444B CN110918444B CN201911008909.0A CN201911008909A CN110918444B CN 110918444 B CN110918444 B CN 110918444B CN 201911008909 A CN201911008909 A CN 201911008909A CN 110918444 B CN110918444 B CN 110918444B
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- Prior art keywords
- vibrating screen
- hopper
- rotary drum
- material guide
- pipe
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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
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/12—Inserts, e.g. armouring plates
- B04B7/16—Sieves or filters
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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
- B07B1/42—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
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- 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)
Abstract
The invention discloses a grain sieving and stoning machine which is characterized by comprising a machine case, wherein a first guide hopper, a dust removal device, a screen device and a centrifugal device are arranged on the machine case, and the screen device comprises a vibrating screen and a vibrating motor, wherein the vibrating screen is provided with meshes and is obliquely arranged; the centrifugal device comprises a rotary drum and a first driving assembly; a filter cylinder is arranged in the rotary drum, a second material guide hopper is arranged between the filter cylinder and the vibrating screen, a material guide pipe is arranged on the second material guide hopper, and the material guide pipe is rotatably connected with the filter cylinder; the side wall of the filter cylinder is provided with an elliptical filter hole; through holes are circumferentially formed in the side wall of the rotary drum; a grain collection bin is arranged on the case, and a first drainage hopper is connected between the vibrating screen and the grain collection bin; the vibrating screen is provided with a parting strip, the bottom surface of the vibrating screen is provided with a discharge opening, and a second drainage hopper is communicated between the discharge opening and the second guide hopper; an opening and closing assembly is further arranged on the vibrating screen. Through addding centrifugal device in order improving the stone effect of going, reduce the waste of cereal.
Description
Technical Field
The invention relates to the field of stone removers, in particular to a grain sieving stone remover.
Background
The rice varieties are more, and the rice can be divided into round and oval-like long strips according to shape division. The rice can be collected and stored after being harvested by drying, screening, shelling and bran blowing, wherein the screening mainly aims at removing impurities such as soil blocks, broken small stones and the like mixed in the grains.
In the prior art, a grain stone remover is usually used for screening and filtering so as to remove impurities such as stones doped in grains. The existing grain stone-removing machine is mainly divided into suction type, blowing type and circulating air. When the suction type grain stone remover works, grains continuously enter the screen surface from the feed hopper, the porosity among the grains is increased under the action of vibration of the screen surface and air flow passing through the material layer, the grains are in a fluidized state, automatic grading is promoted, and stones with high specific gravity sink into the bottom layer to be in contact with the screen surface and are converged to the discharge opening to be discharged through the discharge opening; the grains with small specific gravity float to the upper layer, and the grains on the upper layer are sucked out through the exhaust fan, so that the stone removing step is completed.
However, in practical use, when the screening and filtering work is carried out on the elongated rice, the common grain stone removing machine has poor stone removing effect on the grains due to the special shape; simultaneously, cereal removes the stone back, can leave over more cereal in the stone impurity, and the cereal of leaving over can be discharged along with the stone impurity, causes the waste.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a grain sieving and stone removing machine, which improves the stone removing effect and reduces the waste of grains by additionally arranging a centrifugal device.
The technical scheme adopted by the invention is realized as follows: a grain sieving and stoning machine comprises a machine case, wherein a first guide hopper, a dust removal device, a screen device and a centrifugal device are sequentially arranged on the machine case from top to bottom, the first guide hopper is vertically arranged, the screen device comprises a square vibrating screen and a vibrating motor for driving the vibrating screen to vibrate, the vibrating screen is positioned below the first guide hopper, the vibrating screen is obliquely arranged from top to bottom, meshes are uniformly distributed on the vibrating screen, and the apertures of the meshes are larger than the length of a short axis of grains and smaller than the length of a long axis of grains;
the centrifugal device comprises a rotary drum which is rotatably arranged on the case and a first driving assembly which is used for driving the rotary drum to rotate; the rotary drum is vertically arranged below the vibrating screen, and the top of the rotary drum is arranged in an opening manner; a filter cylinder is vertically arranged in the rotary drum, a second material guide hopper is arranged between the filter cylinder and the vibrating screen, a material guide pipe is arranged at a discharge port of the second material guide hopper, the material guide pipe extends into the filter cylinder, and the material guide pipe is rotatably connected with the filter cylinder;
the side wall of the filter cylinder is circumferentially provided with elliptical filter holes for grains to pass through; through holes are circumferentially arranged on the side wall of the rotary drum, and the aperture of each through hole is smaller than the length of a short shaft of grains;
a grain collection bin is arranged on the case, and a first drainage hopper communicated with the grain collection bin is arranged on the lower side of the vibrating screen; a separation strip is arranged at the joint of the vibrating screen and the first drainage hopper along the width direction of the vibrating screen, a discharge opening is formed in the bottom surface of the vibrating screen, the discharge opening is positioned at the joint of the vibrating screen and the first drainage hopper, and a second drainage hopper is communicated between the discharge opening and the second drainage hopper; and the vibrating screen is also provided with an opening and closing assembly for opening and closing the discharge port.
By adopting the technical scheme, when the long-strip rice is screened and filtered, the grains flow to the vibrating screen through the first guide hopper, the vibrating motor drives the vibrating screen to vibrate, so that the grains are in a fluidized state, the stones with large specific gravity sink into the bottom layer and contact with the sieve surface, the grains with small specific gravity float to the upper layer, because the vibrating screen is obliquely arranged, the grains flow to the low-position side of the vibrating screen in the vibrating process, the grains on the upper layer flow to the grain collecting bin, part of the grains and smaller stones flow to the centrifugal device through the meshes, while the stones which can not pass through the meshes flow to the lower side of the vibrating screen along the inclined surface of the vibrating screen, because the parting strip is arranged at the joint of the vibrating screen and the first drainage hopper, the parting strip partitions the stone blocks at the bottom layer, so that the stones are blocked on the vibrating screen, and the stones blocked on the vibrating screen can be discharged to the centrifugal device through the discharge port; the stone and the grain that flow to centrifugal device then sieve once more and strain, and then retrieve grain for it is better to go the stone effect, has reduced the waste of grain.
As a further improvement of the invention, the dust removing device comprises a blower arranged on the machine box, the blower is positioned on the lower side of the vibrating screen, and the blower blows air horizontally to the upper side of the vibrating screen.
Through adopting foretell technical scheme, because adulterated more millet dirt in the cereal, can blow away millet dirt and lighter impurity through the hair-dryer, effectively reduce the impurity in the cereal.
As a further improvement of the present invention, the first driving assembly includes a driving motor fixedly disposed in the chassis, a bearing seat is fixedly disposed at the bottom of the drum, and a rotating shaft of the driving motor is fixedly connected to the bearing seat.
Through adopting foretell technical scheme, driving motor drive rotary drum rotates for cartridge filter in the rotary drum rotates simultaneously, rotates and then makes cereal and stone be centrifugal motion through drive rotary drum and cartridge filter, and when cereal in the cartridge filter passed filter orifice flow direction rotary drum, less stone also can flow to the rotary drum, through add the through-hole at the lateral wall of rotary drum and then make outside less stone can be discharged the rotary drum.
As a further improvement of the invention, the opening and closing assembly comprises a sealing plate hinged to the vibrating screen, a drainage surface of the sealing plate is connected with a pull ring through a steel wire, a pull hook for hooking the pull ring is arranged on the side wall of the first drainage hopper, and when the pull ring hooks the pull hook, the sealing plate closes the discharge opening.
Through adopting foretell technical scheme, before the screening cereal, can rotate the shrouding to closed bin outlet, then collude the pull ring and hold on the drag hook to make the pull ring shrouding keep closed bin outlet, when the stone on the vibratory screen is more, can will stop to vibratory screen carries cereal, so that behind the cereal majority on the vibratory screen was all carried to cereal collecting bin, open the shrouding so that separate and keep off stone impurity and cereal on vibratory screen and be arranged to centrifugal device and sieve once more.
As a further improvement of the present invention, a first shaking and scattering device for shaking and scattering grains is disposed in the filter cartridge, the first shaking and scattering device includes a first air duct vertically disposed in the material guide duct and a blower disposed in the chassis, an air outlet of the blower is connected to a connection pipe, the connection pipe is connected to a top end of the first air duct, a bottom end of the first air duct extends into the filter cartridge, a plurality of first nozzles are disposed at a bottom end of the first air duct, and the first nozzles face an inner wall of the filter cartridge.
Through adopting foretell technical scheme, because the centrifugal in-process, cereal laminates the inner wall at the cartridge filter with the stone easily to the cartridge filter is fixed relatively, if the inner wall of the big stone laminating cartridge filter of filtration pore than, then can plug up the filtration pore, influence the sieve and strain the effect, consequently add the air-blower and blast air to the cartridge filter, first shower nozzle carries out jet-propelled to the cereal in the cartridge filter, and then plays the scattered effect of fill, with the state that changes cereal, further makes things convenient for cereal to be discharged to the rotary drum.
As a further improvement of the invention, the top of the rotary drum is provided with an annular sealing cover for covering the opening of the rotary drum, and the annular sealing cover is rotationally connected with the rotary drum;
the rotary drum is internally provided with a second shaking and dispersing device for shaking and dispersing grains, the second shaking and dispersing device comprises a second air pipe vertically arranged on the rotary drum and a second spray head arranged at the bottom end of the second air pipe, the second air pipe penetrates through the annular sealing cover, the top end of the second air pipe is communicated with the air blower, the second spray head is positioned in the rotary drum, and the second spray head faces the inner wall of the rotary drum.
By adopting the technical scheme, in the centrifugal process, the grains and the stones are easily attached to the inner wall of the rotary drum and are fixed relative to the rotary drum, if the grains are attached to the inner wall of the rotary drum, the through holes can be blocked, and the screening effect is influenced, so that the grains in the rotary drum are sprayed by the second spray heads, the scattering effect is further played, the state of the grains is changed, and the stones are further conveniently discharged; the annular cover reduces the amount of grain that flies off the top of the bowl during centrifugation.
As a further improvement of the invention, a second exhaust fan is arranged on the case, an air inlet of the second exhaust fan is connected with a second discharge pipe, the second discharge pipe is communicated with the rotary drum, and a through hole for the second discharge pipe to penetrate into the rotary drum is formed in the top surface of the annular sealing cover.
Through adopting foretell technical scheme, behind the stone was removed in the cereal in the rotary drum through the centrifugation, accessible second air exhauster pump send to required position and carry out further processing, makes things convenient for the pump sending of cereal.
As a further improvement of the invention, a material guide plate for opening and closing the discharge hole of the second material guide hopper is arranged in the second material guide hopper, one side of the material guide plate is hinged to the inner wall of the second material guide hopper, and a second driving assembly for driving the material guide plate to open and close the discharge hole of the second material guide hopper is arranged on the side wall of the second material guide hopper.
Through adopting foretell technical scheme, during the cereal in the pumping rotary drum, if stone and the cereal of vibration hopper screening continue to carry centrifugal device, then can lead to tiny stone can be along with cereal pumping away, consequently, when cereal in the rotary drum is more, the discharge gate of the closed second guide fill of accessible second drive assembly drive stock guide, then start the second air exhauster, the second air exhauster pumps cereal to required position and carries out further processing.
As a further improvement of the present invention, the second driving assembly includes a threaded hole disposed on a side wall of the second material guiding hopper and a screw rod in threaded fit with the threaded hole, the threaded hole is located below a hinge point of the material guiding plate, when one end of the screw rod abuts against an inner wall of the second material guiding hopper, a bottom surface of the material guiding plate abuts against the screw rod, and the material guiding plate closes a discharge port of the second material guiding hopper.
Through adopting foretell technical scheme, when the discharge gate of second guide fill need be closed, rotatable screw rod so that the screw rod rotates to the inner wall of contradicting the second guide fill, the in-process of screw rod screw in can conflict the stock guide so that the stock guide is rich the pin joint and upwards rotates, when the screw rod inserts the inner wall of the interior one end conflict second guide fill of second guide fill, the bottom surface of stock guide is contradicted in the screw rod, and at this moment, the discharge gate of the closed second guide fill of stock guide.
In conclusion, the invention has the following beneficial effects:
1. the stone removing effect is improved by additionally arranging the centrifugal device, and the waste of grains is reduced;
2. the blower blows air to blow away the grain dust and light impurities, so that the impurities in the grains are effectively reduced;
3. the setting of first fill scattered device and second fill scattered device is convenient for fight to loose cereal for the separation effect of cereal and stone is better.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the present invention without the mounting frame, the first material guiding funnel and the second exhaust fan;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
FIG. 4 is a schematic view of a cut-away internal structure of the case of the present invention;
FIG. 5 is a sectional view showing a connection portion of the drum, the filter cartridge and the second guide hopper in the present invention;
FIG. 6 is an enlarged schematic view of portion B of FIG. 5;
FIG. 7 is a schematic view of the connection structure of the drum, the carrying seat and the driving motor according to the present invention.
In the figure: 1. a chassis; 2. a mounting frame; 3. a first material guide hopper; 4. vibrating a screen; 41. mesh openings; 42. a first striker plate; 43. a second retainer plate; 44. a discharge outlet; 45. closing the plate; 46. a pull ring; 47. pulling a hook; 5. a vibration motor; 6. a blower; 7. a gantry; 8. a grain collection bin; 9. a first diversion hopper; 91. a parting strip; 10. a first exhaust fan; 11. a first discharge pipe; 12. a rotating drum; 121. a through hole; 13. a filter cartridge; 131. a filtration pore; 14. a second material guide hopper; 141. a material guide plate; 142. a fixed block; 143. a threaded hole; 144. a screw; 15. a second diversion hopper; 16. a material guide pipe; 17. a drive motor; 18. a bearing seat; 19. a guide groove; 20. a guide rail; 21. an annular cover; 22. a first air duct; 221. a first nozzle; 23. a blower; 24. a connecting pipe; 25. a second air duct; 251. a second nozzle; 26. a second exhaust fan; 27. a second discharge pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A grain sieving and stone removing machine is shown in figure 1 and comprises a machine case 1, wherein an installation frame 2 stretching across the machine case 1 is installed on the upper surface of the machine case 1, a first material guide hopper 3 is vertically installed on the installation frame 2, and a discharge hole of the first material guide hopper 3 is located at the bottom of the first material guide hopper 3.
As shown in fig. 1 and 2, a screen device for screening grains is disposed below the first material guiding hopper 3, and specifically, the screen device includes a vibrating screen 4 mounted on the cabinet 1 and two vibrating motors 5 for driving the vibrating screen 4 to vibrate. Specifically, vibratory screen 4 is the rectangle setting, vibratory screen 4 top-down slope is installed at quick-witted case 1's upper surface, and vibratory screen 4's high-order side is located the discharge gate of first guide fill 3 under, because the in-process of vibratory screen 4 work, shake out vibratory screen 4 with cereal easily outside, shake off in order to reduce cereal, consequently, first striker plate 42 is installed at two relative sides of vibratory screen 4, second striker plate 43 is installed to vibratory screen 4's high-order side, and the both ends of second striker plate 43 are connected with two first striker plates 42 respectively, so that cereal gets into behind vibratory screen 4, can flow along vibratory screen 4's slope face downwards.
As shown in fig. 1 and 2, circular meshes 41 are uniformly distributed on the vibrating screen 4, and the apertures of the meshes 41 are larger than the short axis length of the grains and smaller than the long axis length of the grains. The grain in this embodiment is a strip-shaped rice grain similar to an ellipse, and the length of the major axis and the length of the minor axis of the grain are both average values. After grains flow to the vibrating screen 4 from the first material guide hopper 3, the vibrating motor 5 drives the vibrating screen 4 to vibrate, so that part of small stone particles doped in the grains can be discharged through the meshes 41 of the vibrating screen 4, the stones which cannot pass through the meshes 41 are sunk into the bottom layer to be in contact with the screen surface, the grains float to the upper layer, and the grains and the stones flow to the lower side of the vibrating screen 4 along the inclined plane of the vibrating screen 4.
As shown in fig. 1 and 2, since a lot of dust is generated in the process of flowing grains to the vibrating screen 4, a dust removing device is installed on the cabinet 1 and is located between the vibrating screen 4 and the first hopper. Specifically, the dust removing device includes a blower 6 installed on the cabinet 1, the blower 6 is located at a lower side of the vibratory screen 4, and the blower 6 blows air horizontally toward a higher side of the vibratory screen 4. In this embodiment, a gantry 7 for fixing the blower 6 is installed on the chassis 1, the gantry 7 spans the vibrating screen 4, and the blower 6 is fixed on the gantry 7 by bolts.
In addition, as shown in fig. 2 and 3, a grain collection bin 8 is installed on the machine case 1, and the lower side of the vibrating screen 4 is communicated with the grain collection bin 8. Specifically, a first drainage hopper 9 is installed at the lower side of the vibrating screen 4, and the first drainage hopper 9 penetrates into the grain collection bin 8. In order to enable grains to flow to the grain collection bin 8, large blocks can be blocked on the vibrating screen 4, and therefore a partition strip 91 is additionally arranged at the joint of the vibrating screen 4 and the first drainage hopper 9, in the embodiment, the partition strip 91 is arranged along the width direction of the vibrating screen 4, two ends of the partition strip 91 are respectively connected with the two material blocking plates, the height of the partition strip 91 is lower than that of the material blocking plates, so that grains on the upper layer can be discharged to the grain collection bin 8, and the blocks are blocked on the vibrating screen 4 by the partition strip 91.
In order to collect grains in the grain collection bin 8 conveniently, a first exhaust fan 10 is installed on the case 1, an air inlet of the first exhaust fan 10 is connected with a first discharge pipe 11, and the first discharge pipe 11 is communicated with the grain collection bin 8. The grains in the grain collecting bin 8 are pumped to a preset position for subsequent processing through the first exhaust fan 10 for exhausting.
In addition, as shown in fig. 2 and fig. 3, a discharge opening 44 for discharging stones is formed in the vibrating screen 4, in this embodiment, the discharge opening 44 is formed along the width direction of the vibrating screen 4, and the discharge opening 44 is located at the connection position of the vibrating screen 4 and the first drainage hopper 9. In addition, the vibrating screen 4 is provided with an opening and closing component for opening and closing the discharge opening 44. Specifically, the open/close assembly includes a closing plate 45 hinged to the vibrating screen 4, and the closing plate 45 can be turned over downward around the hinge point. The drainage surface of the sealing plate 45 is connected with a pull ring 46 through a steel wire, the side wall of the first drainage funnel 9 is fixed with a drag hook 47 for the pull ring 46 to hook, and when the pull ring 46 hooks the drag hook 47, the sealing plate 45 closes the discharge opening 44.
Because the in-process that grain sieved through vibrating screen 4, partial grain can be discharged through mesh 41 and bin outlet 44, and then lead to extravagant, consequently still add centrifugal device in vibrating screen 4's below, carry out the centrifugation to exhaust grain and stone through centrifugal device, and then make grain and stone separation to in retrieving grain, reduce the waste of grain.
Specifically, as shown in fig. 4 and 5, the centrifugal device includes a drum 12 rotatably mounted on the casing 1 and a first drive assembly for driving the drum 12 to rotate. The drum 12 is vertically installed below the vibratory screen 4, and the top of the drum 12 is provided in an open arrangement. A filter cylinder 13 is fixedly installed in the rotary cylinder 12 along the vertical direction, a second guide hopper 14 is vertically installed between the filter cylinder 13 and the vibrating screen 4, in this embodiment, a second drainage hopper 15 is communicated between the discharge port 44 and the second guide hopper 14, and the stone impurities blocked by the partition bars 91 can be conveyed to the second guide hopper 14 through the second drainage hopper 15 and flow into the filter cylinder 13 for centrifugal filtration; the discharge port of the second material guiding hopper 14 is arranged in a square shape, a cylindrical material guiding pipe 16 is installed at the discharge port of the second material guiding hopper 14, the material guiding pipe 16 extends into the filter cylinder 13, and the material guiding pipe 16 is rotatably connected with the filter cylinder 13.
As shown in fig. 5, the side wall of the filter cylinder 13 is circumferentially provided with an oval filter hole 131 for grain to pass through, the first driving assembly drives the rotating drum 12 and the filter cylinder 13 to rotate, so as to centrifuge the grain flowing into the filter cylinder 13 from the vibrating screen 4, so that the grain passes through the filter hole 131 to the rotating drum 12, and part of stones larger than the grain are blocked in the filter cylinder 13. In practical application, because cereal size is inconsistent, in order to improve the suitability of filtering hole 131, and then be convenient for cereal to wear out from filtering hole 131, consequently, cartridge filter 13 is rolled up for the silica gel net and forms.
In addition, as shown in fig. 5, in the process of centrifugation, part of the stones with smaller sizes will pass out of the rotating drum 12 along with the grains, and further affect the subsequent processing, therefore, the through holes 121 are formed in the circumferential direction of the side wall of the rotating drum 12, and the aperture of the through holes 121 is smaller than the length of the short axis of the grains. When the centrifugal device works, the first driving assembly drives the rotating drum 12 to rotate, so that grains and stones flowing into the filter cylinder 13 do centrifugal motion, and in the centrifugal process, the grains penetrate out of the filter holes 131 to the rotating drum 12 and continue to do centrifugal motion, so that the stones with smaller sizes are discharged out of the rotating drum 12, and the grains are left in the rotating drum 12.
Specifically, as shown in fig. 4 and 7, the first driving assembly includes a driving motor 17 fixedly mounted on the chassis 1, a bearing seat 18 is fixedly mounted at the bottom of the drum 12, and a rotating shaft of the driving motor 17 is fixedly connected with the bearing seat 18. In this embodiment, the carrying seat 18 is a cross-shaped structure, and the rotating shaft of the driving motor 17 is fixedly connected to the center of the cross-shaped structure. The bearing seat 18 is driven to rotate by the driving motor 17, so that the rotary drum 12 and the filter cylinder 13 rotate, and the grain and stone impurities in the rotary drum 12 and the filter cylinder 13 are centrifugally moved. In order to make the rotation of the drum 12 more stable, the side wall of the drum 12 is provided with a guide groove 19 along the circumferential direction, and a guide rail 20 connected with the guide groove 19 in a sliding manner is fixed on the machine case 1, so that the drum 12 is prevented from deviating during the rotation process.
As shown in fig. 1 and 2, when the stone remover works, the first material guiding hopper 3 feeds materials to the vibrating screen 4, and with reference to fig. 5, the stones are immersed into the bottom layer to contact with the screen surface through the vibration of the screen surface, part of the stones are discharged to the filter cylinder 13 of the centrifugal device through the mesh 41, and part of the stones larger than the aperture of the mesh 41 flow downwards along the inclined surface of the screen, and are separated and blocked by the partition 91, so that the stones immersed into the bottom layer are separated and blocked on the vibrating screen 4, when more stones are present on the vibrating screen 4, the grain conveying to the vibrating screen 4 can be stopped, after the grains on the vibrating screen 4 flow to the grain collecting bin 8, the closing plate 45 can be rotated downwards to open the discharging port 44, so that the stones separated and blocked on the vibrating screen 4 are discharged to the centrifugal device through the discharging port 44 to be centrifuged, and further the waste of the grains can be reduced.
As shown in fig. 4 and 5, in order to prevent the grains from flying out of the opening of the rotating drum 12 during the centrifugation, an annular sealing cover 21 for covering the opening of the rotating drum 12 is installed on the top of the rotating drum 12, the annular sealing cover 21 is fixedly connected with the material guiding pipe 16 of the second material guiding hopper 14, and the annular sealing cover 21 is rotatably connected with the rotating drum 12.
In addition, as shown in fig. 5 and 6, a material guide plate 141 for opening and closing the discharge hole of the second material guide hopper 14 is disposed in the second material guide hopper 14, one side of the material guide plate 141 is hinged to the inner wall of the second material guide hopper 14, and a second driving assembly for driving the material guide plate 141 to open and close the discharge hole of the second material guide hopper 14 is disposed on the side wall of the second material guide hopper 14.
Specifically, the second driving assembly includes a threaded hole 143 horizontally formed in a side wall of the second material guiding hopper 14 and a screw 144 threadedly engaged with the threaded hole 143, and the threaded hole 143 is located below a hinge point of the material guiding plate 141. In practical applications, the fixing block 142 may be welded to the side wall of the second material guiding hopper 14, and the threaded hole 143 is formed in the fixing block 142 and penetrates through the inner wall of the second material guiding hopper 14, so as to increase the length of the force arm of the screw 144. When the discharge port of the second material guiding hopper 14 needs to be closed, the screw rod 144 can be rotated to enable the screw rod 144 to rotate to abut against the inner wall of the second material guiding hopper 14, the screw rod 144 can abut against the material guiding plate 141 in the screwing process to enable the material guiding plate 141 to rotate upwards around the hinge point, when one end of the screw rod 144 inserted into the second material guiding hopper 14 abuts against the inner wall of the second material guiding hopper 14, the bottom surface of the material guiding plate 141 abuts against the screw rod 144, and at the moment, the material guiding plate 141 closes the discharge port of the second material guiding hopper 14.
As shown in fig. 4 and 5, since the grains and stones are easily attached to the inner wall of the rotating drum 12 or the filter cylinder 13 during the centrifugation process, and fixed to the rotating drum 12 or the filter cylinder 13, thereby affecting the filtering effect, the first dispersing device and the second dispersing device for dispersing the grains are respectively installed in the filter cylinder 13 and the rotating drum 12.
Specifically, as shown in fig. 4 and 5, the first hopper device includes a first air pipe 22 vertically installed in the material guiding pipe 16 and a blower 23 installed on the ring-shaped cover 21, an air outlet of the blower 23 is connected with a connecting pipe 24, and the connecting pipe 24 penetrates into the material guiding pipe 16 and is connected with a top end of the first air pipe 22. Two first shower nozzles 221 are installed to the bottom of first tuber pipe 22, and two first shower nozzles 221 become the axisymmetric setting with first tuber pipe 22, and two first shower nozzles 221 all face the inner wall of cartridge filter 13. The second shaking and dispersing device comprises a second air pipe 25 vertically arranged on the annular sealing cover 21 and a second spray nozzle 251 arranged at one end of the second air pipe 25, and the annular air pipe is provided with an air hole for the second air pipe 25 to penetrate into the rotary drum 12; the second spray head 251 is connected to the end of the second air pipe 25 penetrating into the drum 12, and the second spray head 251 faces the inner wall of the drum 12. In this embodiment, the second duct 25 shares the blower 23 with the first duct 22. In the centrifugal process, the blower 23 blows air to the first air pipe 22 and the second air pipe 25, so that the first spray head 221 and the second spray head 251 blow away the materials of the filter cartridge 13 and the rotary drum 12 respectively, and further play a role in shaking away, so as to separate grains from stones.
As shown in fig. 1 and 5, in order to collect the grains in the rotating drum 12, a second exhaust fan 26 is installed on the side wall of the case 1, an air inlet of the second exhaust fan 26 is connected with a second discharge pipe 27, a through hole for the second discharge pipe 27 to pass through is formed in the top surface of the annular cover 21, the second discharge pipe 27 penetrates into the through hole, the grains are drawn out to a required position through the second exhaust fan 26, and then the grains are further processed by the worker.
The overall working process is as follows: the destoner during operation, 3 pay-off to vibrating screen 4 of first guide fill, vibration through the sifter so that the stone sinks bottom and sifter contact, part stone is arranged to centrifugal device's cartridge filter 13 through mesh 41, and then can follow the sloping surface downward flow of screen cloth than the big part stone in mesh 41's aperture, separate the fender through parting bead 91, and then the stone that makes to sink the bottom is separated the fender on vibrating screen 4, when the stone on vibrating screen 4 is more, can stop to vibrating screen 4 transport cereal, treat behind the cereal flow direction cereal collection storehouse 8 on vibrating screen 4, can rotate shrouding 45 downwards so that bin outlet 44 opens, so that the stone that is separated the fender on vibrating screen 4 carries out the centrifugation through bin outlet 44 discharge to centrifugal device, and then reduce the waste of cereal.
The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a cereal destoner that sieves, includes quick-witted case (1), top-down has set gradually first guide fill (3), dust collector, sieving mechanism and centrifugal device on quick-witted case (1), its characterized in that: the first material guide hopper (3) is vertically arranged, the screen device comprises a square vibrating screen (4) and a vibrating motor (5) for driving the vibrating screen (4) to vibrate, the vibrating screen (4) is positioned below the first material guide hopper (3), the vibrating screen (4) is obliquely arranged from top to bottom, meshes (41) are uniformly distributed on the vibrating screen (4), and the aperture of each mesh (41) is larger than the length of a short axis of grains and smaller than the length of a long axis of grains;
the centrifugal device comprises a rotary drum (12) which is rotatably arranged on the machine box (1) and a first driving component which is used for driving the rotary drum (12) to rotate; the rotary drum (12) is vertically arranged below the vibrating screen (4), and the top of the rotary drum (12) is arranged in an opening manner; a filter cylinder (13) is vertically arranged in the rotary drum (12), a second material guide hopper (14) is arranged between the filter cylinder (13) and the vibrating screen (4), a material guide pipe (16) is arranged at a material outlet of the second material guide hopper (14), the material guide pipe (16) extends into the filter cylinder (13), and the material guide pipe (16) is rotatably connected with the filter cylinder (13);
the side wall of the filter cylinder (13) is circumferentially provided with elliptical filter holes (131) for grains to pass through; through holes (121) are formed in the circumferential direction of the side wall of the rotary drum (12), and the aperture of each through hole (121) is smaller than the length of a short axis of grains;
a grain collection bin (8) is arranged on the case (1), and a first drainage hopper (9) communicated with the grain collection bin (8) is arranged on the lower side of the vibrating screen (4); a separation strip (91) is arranged at the joint of the vibrating screen (4) and the first drainage hopper (9) along the width direction of the vibrating screen (4), a discharge opening (44) is arranged on the bottom surface of the vibrating screen (4), the discharge opening (44) is positioned at the joint of the vibrating screen (4) and the first drainage hopper (9), and a second drainage hopper (15) is communicated between the discharge opening (44) and the second drainage hopper (14); the vibrating screen (4) is also provided with an opening and closing assembly for opening and closing the discharge port (44).
2. The grain sieving and stoning machine of claim 1, wherein: the dust removal device comprises a blower (6) arranged on the case (1), the blower (6) is positioned on the low side of the vibrating screen (4), and the blower (6) blows air horizontally to the high side of the vibrating screen (4).
3. The grain sieving and stoning machine of claim 2, wherein: the first driving assembly comprises a driving motor (17) fixedly arranged in the case (1), a bearing seat (18) is fixedly arranged at the bottom of the rotary drum (12), and a rotating shaft of the driving motor (17) is fixedly connected to the bearing seat (18).
4. The grain sieving and stoning machine of claim 1, wherein: the opening and closing assembly comprises a sealing plate (45) hinged to the vibrating screen (4), a drainage surface of the sealing plate (45) is connected with a pull ring (46) through a steel wire line, a pull hook (47) for the pull ring (46) to hook is arranged on the side wall of the first drainage hopper (9), and when the pull hook (47) is hooked by the pull ring (46), the sealing plate (45) closes the discharge port (44).
5. The grain sieving and stoning machine of claim 1, wherein: be provided with in cartridge filter (13) and be used for trembling the first device that looses that trembles of scattered cereal, first tremble the device including vertical set up in first tuber pipe (22) in passage (16) and set up in air-blower (23) of quick-witted case (1), the air outlet of air-blower (23) is connected with connecting pipe (24), connecting pipe (24) connect in the top of first tuber pipe (22), the bottom of first tuber pipe (22) extends to in cartridge filter (13), the bottom of first tuber pipe (22) is provided with a plurality of first shower nozzle (221), first shower nozzle (221) orientation the inner wall of cartridge filter (13).
6. The grain sieving and stoning machine of claim 5, wherein: the top of the rotary drum (12) is provided with an annular sealing cover (21) for covering the opening of the rotary drum (12), and the annular sealing cover (21) is rotatably connected with the rotary drum (12);
a second shaking and scattering device for shaking and scattering grains is arranged in the rotary drum (12), the second shaking and scattering device comprises a second air pipe (25) vertically arranged on the rotary drum (12) and a second spray head (251) arranged at the bottom end of the second air pipe (25), the second air pipe (25) penetrates through the annular sealing cover (21), the top end of the second air pipe (25) is communicated with the air blower (23), the second spray head (251) is arranged in the rotary drum (12), and the second spray head (251) faces to the inner wall of the rotary drum (12).
7. The grain sieving and stoning machine of claim 6, wherein: the improved structure is characterized in that a second exhaust fan (26) is arranged on the case (1), an air inlet of the second exhaust fan (26) is connected with a second discharge pipe (27), the second discharge pipe (27) is communicated with the rotary drum (12), and a through hole for the second discharge pipe (27) to penetrate into the rotary drum (12) is formed in the top surface of the annular sealing cover (21).
8. The grain sieving and stoning machine of claim 1, wherein: a material guide plate (141) used for opening and closing a discharge hole of the second material guide hopper (14) is arranged in the second material guide hopper (14), one side of the material guide plate (141) is hinged to the inner wall of the second material guide hopper (14), and a second driving assembly used for driving the material guide plate (141) to open and close the discharge hole of the second material guide hopper (14) is arranged on the side wall of the second material guide hopper (14).
9. The grain sieving and stoning machine of claim 8, wherein: the second driving assembly comprises a threaded hole (143) formed in the side wall of the second material guiding hopper (14) and a screw rod (144) in threaded fit with the threaded hole (143), the threaded hole (143) is located below a hinged point of the material guiding plate (141), when one end of the screw rod (144) abuts against the inner wall of the second material guiding hopper (14), the bottom surface of the material guiding plate (141) abuts against the screw rod (144), and the material guiding plate (141) closes a discharge hole of the second material guiding hopper (14).
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| CN201911008909.0A CN110918444B (en) | 2019-10-23 | 2019-10-23 | Cereal sieving and stoning machine |
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| CN201911008909.0A CN110918444B (en) | 2019-10-23 | 2019-10-23 | Cereal sieving and stoning machine |
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| CN115400857A (en) * | 2021-05-28 | 2022-11-29 | 湖州新开元碎石有限公司 | Adjusting device for controlling content of machine-made sand powder |
| CN115069406A (en) * | 2022-06-01 | 2022-09-20 | 杭州中泽生物科技有限公司 | Rice seed screening system and screening method |
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| JPH05274A (en) * | 1991-06-21 | 1993-01-08 | Satake Eng Co Ltd | Stone removing grain sorter |
| CN2198030Y (en) * | 1994-05-05 | 1995-05-24 | 辛守林 | Grain impurity cleaning and stone removing and husking machine |
| KR101972596B1 (en) * | 2017-11-29 | 2019-04-29 | 농업회사법인 한국지엠피 주식회사 | Apparatus for cutting agricultural product |
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