CN115321105A

CN115321105A - Grain conveyor with impurity winnowing function

Info

Publication number: CN115321105A
Application number: CN202210988897.8A
Authority: CN
Inventors: 潘阳; 曹川�; 李娜; 刘辉; 孙勤; 刘静; 慎雅兰; 时玉晔
Original assignee: ANHUI VOCATIONAL COLLEGE OF GRAIN ENGINEERING
Current assignee: ANHUI VOCATIONAL COLLEGE OF GRAIN ENGINEERING
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-11-11
Anticipated expiration: 2042-08-17
Also published as: CN115321105B

Abstract

The invention belongs to the technical field of grain conveyors, and aims to solve the problems that in the prior art, the quality of grains is affected by shell dust impurities and surface moisture doped in the grains, the grain conveying process is time-consuming and labor-consuming, and the labor cost is high; according to the invention, the grain is pushed into the grain lifting mechanism through the grain pushing mechanism, the grain lifting mechanism lifts the grain, the automatic feeding of the grain is realized, the grain is not required to be manually input, the labor cost is reduced, the shell dust in the grain can be removed and dried, and the grain quality is improved.

Description

Grain conveyor with impurity winnowing function

Technical Field

The invention relates to the technical field of grain conveyors, in particular to a grain conveyor with an impurity winnowing function.

Background

Grain refers to a general term of various plant seeds in cooked food and can also be generally referred to as grain, grain crops contain rich nutrient substances, mainly including protein, vitamins, dietary fibers, fat, starch and the like, at present, a belt conveyor is generally required to be utilized in the grain conveying process, when the belt conveyor is used, grains are manually fed into a feeding side of the belt conveyor, and the belt conveyor conveys the grains from the feeding side to a discharging side;

because the grains contain a large amount of empty-shell dust impurities, the dust impurities in the grains are scattered at four positions when the grains are thrown into the feeding side of the conveyor and in the conveying process, so that physical harm is brought to operators and environmental pollution is caused, the quality of the grains is influenced by the empty-shell dust impurities doped in the grains, time and labor are wasted in the process of manually throwing the grains into the feeding side of the grain conveyor, the labor cost is high, moisture is generally arranged on the surfaces of the grains, the grains are easy to mildew in the subsequent storage process, and the improvement of the quality of the grains is not facilitated;

in view of the above technical drawbacks, a solution is proposed.

Disclosure of Invention

The invention aims to provide a grain conveyor with an impurity winnowing function, and solves the problems that dust impurities in grains scatter around to cause physical harm to operators and pollution to the environment when the grains are thrown into a feeding side of the conveyor and in a conveying process, empty-shell dust impurities and surface moisture doped in the grains can influence the quality of the grains, and the process of manually throwing the grains into the feeding side of the grain conveyor wastes time and labor and has high labor cost.

In order to achieve the purpose, the invention provides the following technical scheme:

a grain conveyor with an impurity winnowing function comprises a movable bottom plate and a grain conveying mechanism, wherein a plurality of groups of rollers are fixedly mounted at the bottom of the movable bottom plate, the grain conveying mechanism is mounted at the top of the movable bottom plate, a grain lifting mechanism positioned at the input side of the grain conveying mechanism is fixedly mounted at the top of the movable bottom plate, a box body mounting plate is fixedly arranged at one side of the grain lifting mechanism, which is close to the top end and faces the grain conveying mechanism, and a grain pushing mechanism is fixedly arranged at one side of the grain lifting mechanism, which is close to the bottom end and faces away from the grain conveying mechanism;

the bottom of the box body mounting plate is fixedly provided with an air separation screening box, a round conveying cavity, a grain winnowing chamber and a screening drying chamber are arranged in the air separation screening box, the round conveying cavity is communicated with a grain lifting mechanism through an obliquely arranged grain transfer pipe, the round conveying cavity is positioned above the grain winnowing chamber and is communicated with the grain winnowing chamber through a strip-shaped discharge port, the lower part of the grain winnowing chamber is communicated with the screening drying chamber, a dust shell gathering chamber is arranged in the air separation screening box, and the dust shell gathering chamber and the grain winnowing chamber are positioned on two sides in the air separation screening box;

the side wall of the air separation screening box is fixedly provided with an air heater, and an output port of the air heater is provided with a blast pipe; the inner wall of the grain winnowing chamber is provided with a blast nozzle, one end of the blast pipe, which is far away from the air heater, is connected with the blast nozzle, the blast direction of the blast nozzle faces the inlet of the dust shell gathering chamber, a screening and drying plate is fixedly arranged in the grain winnowing chamber, one side of the wind screening and screening box, which faces the grain conveying mechanism, is fixedly provided with a grain guide-out plate, the screening and drying plate inclines downwards towards the grain guide-out plate, the bottom of the wind screening and screening box is fixedly provided with a fine grain collecting hopper, and the bottom of the fine grain collecting hopper is provided with a fine grain pumping pipe;

the fixed filtration slagging-off case that sets up in top of box mounting panel, install on the wind selection sieve workbin and inhale the material pipe with the communicating convulsions in dirt shell gathering chamber bottom, and the other end that the material pipe was inhaled in convulsions communicates with each other with the wind selection sieve workbin, the fixed first vibrator that sets up in bottom of sieve material drying plate, evenly set up the sieve material hole that link up its upper and lower both sides on the sieve material drying plate, the fixed multiunit horizontal heating strip and the vertical heating strip that sets up in top of sieve material drying plate, and the top terminal surface of horizontal heating strip and vertical heating strip flushes with the top terminal surface of sieve material drying plate, all be equipped with electric heating wire in horizontal heating strip and the vertical heating strip.

Further, the grain conveying mechanism comprises two groups of obliquely arranged roller body mounting frames, grain conveying rollers are rotatably arranged at two ends of each roller body mounting frame, the two groups of grain conveying rollers are connected through grain conveying belts, a fixed supporting frame fixedly connected with the movable bottom plate is arranged at the bottom of one end of each roller body mounting frame, and an adjustable supporting frame is arranged below the other end of each roller body mounting frame; the outer belt surface of the grain conveying belt is fixedly provided with a front group of side baffle and a rear group of side baffle, and a plurality of groups of partition plates are arranged between the two groups of side baffles.

Further, adjustable support frame is including fixed vertical board and the internal thread piece of slidable mounting in vertical board one side that sets up at portable bottom plate top, one side of vertical board is fixed to be set up upper and lower two sets of connecting seats, and is two sets of rotate through the bearing between the connecting seat and set up the screw thread regulation pole, and internal thread piece and screw thread regulation pole threaded connection, the connecting seat that is located the below is passed and is linked to each other with adjusting the rocking handle in the bottom of screw thread regulation pole, the bracing post is installed to one side of vertical board dorsad to the internal thread piece, and the one end that the internal thread piece was kept away from to the bracing post links to each other with the roll body mounting bracket.

Furthermore, a horizontally arranged dust shell blocking net is installed in the filtering and deslagging box, the communicated part of the air draft material suction pipe and the filtering and deslagging box is positioned below the dust shell blocking net, and a second vibrator is fixedly arranged at the bottom of the dust shell blocking net; the filtering and deslagging box is provided with a dust extraction shell pipe communicated with the bottom of the filtering and deslagging box, the filtering and deslagging box is provided with an exhaust pipe communicated with the filtering and deslagging box, the communicated part of the exhaust pipe is positioned above the dust shell blocking net, and the exhaust pipe is provided with an exhaust fan; grain hoist mechanism includes a vertical lifting section of thick bamboo, the outer peripheral face parcel of a vertical lifting section of thick bamboo has the heat preservation housing, the one end that the filtration slagging-off case was kept away from to the exhaust pipe communicates with each other with the inside of heat preservation housing, and separates through the heat conduction interlayer between a vertical lifting section of thick bamboo and the heat preservation housing.

Furthermore, the top of the vertical lifting cylinder is fixedly provided with a grain lifting motor through a motor base, a grain screw shaft is rotatably arranged in the vertical lifting cylinder through a bearing, the peripheral surface of the grain screw shaft is provided with a spiral lifting blade, one side of the vertical lifting cylinder, which is close to the top end, is connected with an inlet of a grain transit pipe, and one side of the vertical lifting cylinder, which is close to the bottom end, is connected with a grain pushing mechanism.

Further, the grain pushing mechanism comprises a grain feeding longitudinal cylinder and a transit passage, a grain inlet is formed in one side, opposite to the grain lifting mechanism, of the grain feeding longitudinal cylinder, a grain dropping opening is formed in one side, facing the grain lifting mechanism, of the grain feeding longitudinal cylinder, and the transit passage is communicated with the grain dropping opening and the vertical lifting cylinder;

the opening diameter of the transfer passage facing one side of the grain dropping opening is larger than that of the other side of the transfer passage, a rotary hollow shaft is mounted in the grain feeding longitudinal cylinder along the Y direction, a plurality of groups of grain turning conveying plates are mounted on the peripheral surface of the rotary hollow shaft, and one side of each grain turning conveying plate, which is far away from the rotary hollow shaft, is in contact with the inner wall of the grain feeding longitudinal cylinder.

Furthermore, a first rotating pipe is installed at one end of the rotating hollow shaft, a second rotating pipe is installed at the other end of the rotating hollow shaft, an air exhaust chamber is formed inside the front side of the grain feeding longitudinal cylinder, an air inlet chamber is formed inside the rear side of the grain feeding longitudinal cylinder, an opening is formed in the peripheral surface of the first rotating pipe to communicate the air inlet chamber with the rotating hollow shaft, and an opening is formed in the peripheral surface of the second rotating pipe to communicate the air exhaust chamber with the rotating hollow shaft;

a hot air conveying pipe is mounted on the heat-insulating housing wrapped outside the vertical lifting cylinder, the other end of the hot air conveying pipe is communicated with the air inlet cavity, a discharge pipe communicated with the air exhaust cavity is mounted on the grain inlet longitudinal cylinder, a heat conducting cavity is formed in the grain turning conveying plate and communicated with the rotary hollow shaft, and a heat absorbing layer is mounted on the inner wall of the heat conducting cavity; one end of the grain feeding longitudinal cylinder is fixedly provided with a grain feeding motor through a motor base, and the output end of the grain feeding motor is connected with the second rotating pipe.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the automatic grain feeding device, the rotary hollow shaft is rotated through the grain feeding motor in the grain pushing mechanism, each group of grain turning conveying plates rotate along with the rotary hollow shaft and push grains into the grain falling opening, the transfer channel gathers the grains and enables the grains to enter the grain lifting mechanism, the grain spiral shaft in the grain lifting mechanism rotates to lift the grains inside, automatic feeding of the grains is achieved, manual grain feeding is not needed, time and labor are saved in operation, and labor cost is reduced;

2. according to the invention, the strip-shaped feed opening vertically falls in a row along the longitudinal direction, the grain falling direction is vertical to the hot air blowing direction of the blowing nozzle, the shells and dust in the grains are blown into the shell gathering chamber under the action of wind power, the grain quality is improved, the influence on the health of operators and the environmental pollution caused by the scattering of dust impurities in the grain conveying process can be prevented, the air carrying the shell dust in the shell gathering chamber is pumped out under the action of negative pressure and enters the filtering deslagging box, the shell dust in the shell gathering chamber is pumped out in time, the continuous and smooth air separation impurity removal operation can be ensured, and the heat in the hot air can be used for evaporating moisture on the surface of the grains, so that the grains can be primarily dried, and the subsequent storage of the grains can be facilitated;

3. according to the grain screening and drying device, grains are screened through the screening and drying plate to remove damaged fine grains in the grains, the quality of the grains is improved, the screening and drying plate is vibrated by the first vibrator to facilitate the forward movement of the screened grains and prevent the blocking of screening holes, the transverse heating strips and the longitudinal heating strips conduct heat to the grains above the transverse heating strips and the longitudinal heating strips, the grains are dried again, moisture on the surfaces of the grains can be effectively removed in the forward movement process of the grains in the screening process, so that the grains are kept dry, and the grain screening and drying device is beneficial to the subsequent storage of the grains;

4. according to the grain conveying device, screened and dried grains are conveyed to the grain conveying belt on the grain conveying mechanism through the grain guide-out plate, the side baffle plates guide the conveying of the grains to prevent the grains from falling from the front side and the rear side in the conveying process, the partition plates can effectively prevent the grains from sliding downwards and falling to the ground in the conveying process, the fast and effective conveying of the grains is ensured, the inclination angles of the grain conveying belt are adjusted through the adjustable support frame, and the grain collecting devices with different heights can be conveniently butted;

5. according to the invention, hot air filtered by the dust shell blocking net is conveyed into the heat-insulating housing through the exhaust pipe so as to improve the temperature in the heat-insulating housing, the heat conduction interlayer conducts heat to grains inside, so that the grains inside can be preheated, the hot air in the heat-insulating housing enters the rotary hollow shaft, and the rotary hollow shaft and the grain turning conveying plate conduct heat to the grains in the pushing-in process of grain turning for secondary preheating, so that the heat in the hot air can be effectively utilized, the drying effect of the grains can be improved, and the surface moisture of the grains can be eliminated.

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 view of the overall structure of the present invention;

FIG. 2 is a schematic view of the connection between the grain pushing mechanism and the grain lifting mechanism according to the present invention;

FIG. 3 is a schematic structural view (front view) of a grain pushing mechanism according to the present invention;

FIG. 4 is a schematic top view of the grain pushing mechanism of the present invention;

FIG. 5 is a schematic view showing the connection between the air separation screening box and the filtering and deslagging box in the present invention;

FIG. 6 is a bottom view of the grain winnowing chamber of the present invention;

FIG. 7 is a top view of a screen drying deck of the present invention;

FIG. 8 is a schematic structural view of a filtering and deslagging box in the invention;

FIG. 9 is an enlarged view of portion A of FIG. 1;

fig. 10 is a schematic top view of the grain conveyor belt of the present invention.

Reference numerals: 1. a movable floor; 2. a grain pushing mechanism; 3. a grain conveying mechanism; 4. a grain lifting mechanism; 5. a wind separation screening box; 6. a filtering deslagging box; 7. a box body mounting plate; 8. air-draft material suction pipe; 9. a hot air blower; 10. an exhaust fan; 11. an exhaust duct; 12. a screen material drying plate; 121. a transverse heating bar; 122. a longitudinal heat generating strip; 123. sieving holes; 124. a first vibrator; 13. a grain delivery plate; 14. a fine particle collection hopper; 15. a fine particle pumping pipe; 16. a blast nozzle; 17. a grain transit pipe; 18. a blast pipe; 21. a grain feeding longitudinal cylinder; 22. a transfer channel; 23. a grain inlet; 24. a grain outlet; 25. a rotating hollow shaft; 26. a heat conducting cavity; 27. a grain turning conveying plate; 28. a grain feeding motor; 29. a discharge pipe; 210. an air inlet chamber; 211. an exhaust chamber; 212. a first rotating pipe; 213. a second rotary pipe; 31. a grain conveyor belt; 32. a roller body mounting frame; 33. grain conveying rollers; 34. fixing a support frame; 35. an adjustable support frame; 351. a vertical plate; 352. a connecting seat; 353. a diagonal bracing column; 354. a threaded adjusting rod; 355. an internal thread block; 356. adjusting the rocking handle; 36. a side dam; 37. a partition plate; 41. a vertical lifting cylinder; 42. a grain lifting motor; 43. a grain screw shaft; 44. a thermally conductive barrier layer; 45. a heat-preserving housing; 46. a hot air delivery pipe; 51. a circular delivery cavity; 52. a grain winnowing chamber; 53. a dust shell collection chamber; 54. a screen material drying chamber; 55. a strip-shaped feed opening; 61. a dust shell blocking net; 62. a dust extraction shell tube; 63. a second vibrator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1-8, the grain conveyor with the impurity winnowing function provided by the invention comprises a movable bottom plate 1 and a grain conveying mechanism 3, wherein a plurality of groups of rollers are fixedly installed at the bottom of the movable bottom plate 1 to facilitate the movement of the device, the grain conveying mechanism 3 is installed at the top of the movable bottom plate 1, a grain lifting mechanism 4 positioned at the input side of the grain conveying mechanism 3 is fixedly installed at the top of the movable bottom plate 1, the grain lifting mechanism 4 comprises a vertical lifting cylinder 41, a grain lifting motor 42 is fixedly arranged at the top of the vertical lifting cylinder 41 through a motor base, a grain screw shaft 43 is rotatably arranged in the vertical lifting cylinder 41 through a bearing, a spiral lifting blade is installed on the peripheral surface of the grain screw shaft 43, one side of the vertical lifting cylinder 41 close to the top end is connected with an inlet of a grain transit pipe 17, and one side of the vertical lifting cylinder 41 close to the bottom end is connected with a grain pushing mechanism 2;

the grain lifting mechanism 4 is close to the bottom end and is fixedly provided with a grain pushing mechanism 2 at one side back to the grain conveying mechanism 3, the grain pushing mechanism 2 comprises a grain inlet longitudinal cylinder 21 and a transit passage 22, the grain inlet longitudinal cylinder 21 is arranged along the Y direction, one side of the grain inlet longitudinal cylinder 21, which is back to the grain lifting mechanism 4, is provided with a grain inlet 23, one side of the grain inlet longitudinal cylinder 21, which faces the grain lifting mechanism 4, is provided with a grain outlet 24, the grain inlet 23 and the grain outlet 24 are both arranged along the Y direction, the transit passage 22 is communicated with the grain outlet 24 and the vertical lifting cylinder 41, grains enter the grain inlet longitudinal cylinder 21 through the grain inlet 23, the grains are pushed into the grain outlet 24 in the turning process of the grain turning conveying plate 27, and the grains enter the transit passage 22 through the grain outlet 24;

the opening diameter of the transfer passage 22 facing one side of the grain dropping opening 24 is larger than that of the other side of the grain dropping opening, so that the grain gathering and output are facilitated, a rotary hollow shaft 25 is installed in the grain feeding longitudinal cylinder 21 along the Y direction, a plurality of groups of grain turning conveying plates 27 are installed on the peripheral surface of the rotary hollow shaft 25, and one side of the grain turning conveying plates 27 far away from the rotary hollow shaft 25 is in contact with the inner wall of the grain feeding longitudinal cylinder 21; a first rotating pipe 212 is installed at one end of the rotating hollow shaft 25, a second rotating pipe 213 is installed at the other end of the rotating hollow shaft 25, a grain feeding motor 28 is fixedly installed at one end of the grain feeding longitudinal cylinder 21 through a motor base, the output end of the grain feeding motor 28 is connected with the second rotating pipe 213, the grain feeding motor 28 enables the rotating hollow shaft 25 to rotate in the grain feeding process, the rotating hollow shaft 25 drives each group of grain turning conveying plates 27 to rotate along with the rotating hollow shaft, grains enter the grain feeding longitudinal cylinder 21 through the grain feeding port 23, and the grains are pushed into the grain falling port 24 in the turning process of the grain turning conveying plates 27;

a box body mounting plate 7 is fixedly arranged on one side, close to the top end, of the grain lifting mechanism 4 and facing the grain conveying mechanism 3, a wind separation screening box 5 is fixedly arranged at the bottom of the box body mounting plate 7, a round conveying cavity 51, a grain winnowing chamber 52 and a screening drying chamber 54 are formed in the wind separation screening box 5, the round conveying cavity 51 is communicated with the grain lifting mechanism 4 through a grain transit pipe 17, the grain transit pipe 17 inclines downwards towards the grain lifting mechanism 4, the round conveying cavity 51 is positioned above the grain winnowing chamber 52 and is communicated with the grain winnowing chamber through a strip-shaped discharging opening 55, the strip-shaped discharging opening 55 is formed along the Y direction, the lower part of the grain winnowing chamber 52 is communicated with the screening drying chamber 54, a dust shell gathering chamber 53 is formed in the wind separation screening box 5, and the dust shell gathering chamber 53 and the grain winnowing chamber 52 are positioned on two sides of the interior of the wind separation screening box 5;

the side wall of the air separation screening box 5 is fixedly provided with an air heater 9, and an output port of the air heater 9 is provided with a blast pipe 18; the inner wall of the grain winnowing chamber 52 is provided with a blast nozzle 16, one end of a blast pipe 18 far away from the hot air blower 9 is connected with the blast nozzle 16, the blast direction of the blast nozzle 16 faces the inlet of the dust shell gathering chamber 53, a screening drying plate 12 is fixedly arranged in the grain winnowing chamber 52, one side of the air screening box 5 facing the grain conveying mechanism 3 is fixedly provided with a grain leading-out plate 13, the screening drying plate 12 inclines downwards towards the grain leading-out plate 13, and the screening drying plate 12 is uniformly provided with screening holes 123 penetrating through the upper side and the lower side of the screening drying plate 12; preferably, a first vibrator 124 is fixedly arranged at the bottom of the screening drying plate 12, and the first vibrator 124 vibrates the screening drying plate 12 to facilitate the forward movement of the screened grains and prevent the blocking of the screening holes 123;

a plurality of groups of transverse heating strips 121 and longitudinal heating strips 122 are fixedly arranged at the top of the screening drying plate 12, the top end faces of the transverse heating strips 121 and the longitudinal heating strips 122 are flush with the top end face of the screening drying plate 12, electric heating wires are arranged in the transverse heating strips 121 and the longitudinal heating strips 122, the transverse heating strips 121 and the longitudinal heating strips 122 convert electric energy into heat energy and conduct the heat energy to grains above, drying of the grains is realized, moisture on the surfaces of the grains can be effectively removed in the grain screening advancing process, so that the grains are kept dry, and subsequent storage of the grains is facilitated; preferably, a fine grain collecting hopper 14 is fixedly arranged at the bottom of the air separation screening box 5, damaged fine grain grains fall downwards into the fine grain collecting hopper 14, the fine grain collecting hopper 14 collects the damaged grains, a fine grain pumping pipe 15 is arranged at the bottom of the fine grain collecting hopper 14, and when the fine grain grains in the fine grain collecting hopper 14 reach a certain amount, the fine grain is pumped out through the fine grain pumping pipe 15;

the top of the box body mounting plate 7 is fixedly provided with a filtering and deslagging box 6, the air separation screening box 5 is provided with an air draft material suction pipe 8 communicated with the bottom of the dust shell gathering chamber 53, the other end of the air draft material suction pipe 8 is communicated with the air separation screening box 5, a dust shell blocking net 61 is mounted in the filtering and deslagging box 6, the dust shell blocking net 61 is horizontally arranged, the communication position of the air draft material suction pipe 8 and the filtering and deslagging box 6 is positioned below the dust shell blocking net 61, the filtering and deslagging box 6 is provided with an exhaust pipe 11 communicated with the air draft material suction pipe and positioned above the dust shell blocking net 61, the exhaust pipe 11 is provided with an exhaust fan 10, in the process of air separation and impurity removal, the exhaust fan 10 is started to exhaust the interior of the filtering and deslagging box 6 into a negative pressure state, the air carrying the dust in the dust shell gathering chamber 53 is exhausted by the air draft material suction pipe 8 under the negative pressure action and enters the filtering and deslagging box 6, and the dust in the dust shell gathering chamber 53 is timely exhausted and continuous and stable air separation operation is ensured;

in the process of extracting the dust and gas from the empty shell, the dust shell blocking net 61 filters the air which enters the filtering and deslagging box 6 and carries the dust and the gas after filtering is output through the exhaust pipe 11, preferably, the bottom of the dust shell blocking net 61 is fixedly provided with the second vibrator 63, the dust shell blocking net 61 is repeatedly vibrated through the second vibrator 63 in the filtering process, so that the filtering hole of the dust shell blocking net 61 is prevented from being blocked, the filtering operation is ensured to be smoothly and stably carried out, the filtering and deslagging box 6 is provided with the dust extracting shell pipe 62 communicated with the bottom of the filtering and deslagging box 62, the filtered dust and the dust of the empty shell are gathered at the bottom of the filtering and deslagging box 6, and when the dust and the dust of the empty shell gathered inside reach a certain amount, the dust and the dust of the empty shell are discharged through the dust extracting shell pipe 62.

Example two:

as shown in fig. 1-4, the present embodiment is different from embodiment 1 in that the outer peripheral surface of the vertical lifting cylinder 41 is wrapped by a heat-insulating cover 45, one end of the exhaust pipe 11 away from the filtering and deslagging box 6 is communicated with the interior of the heat-insulating cover 45, and the vertical lifting cylinder 41 is separated from the heat-insulating cover 45 by a heat-conducting interlayer 44; in the working process, the exhaust pipe 11 conveys the hot air filtered by the dust shell blocking net 61 into the heat-insulating housing 45 so as to improve the temperature in the heat-insulating housing 45, and in the lifting process of the grains, the heat-conducting interlayer 44 conducts the heat to the grains inside, so that the grains inside can be preheated, the heat in the hot air can be effectively utilized, the drying effect of the grains can be improved, and the surface moisture of the grains can be eliminated;

the heat preservation cover shell 45 is provided with a hot air conveying pipe 46, the front side of the grain feeding longitudinal cylinder 21 is internally provided with an air exhaust chamber 211, the rear side of the grain feeding longitudinal cylinder 21 is internally provided with an air inlet chamber 210, one end of the first rotating pipe 212 enters the rotating hollow shaft 25, the end port of the first rotating pipe is open and is communicated with the rotating hollow shaft 25, the peripheral surface of the other end of the first rotating pipe 212 is provided with an opening to be communicated with the air inlet chamber 210, one end of the second rotating pipe 213 enters the rotating hollow shaft 25, the end port of the second rotating pipe is open and is communicated with the rotating hollow shaft 25, and the peripheral surface of the other end of the second rotating pipe 213 is provided with an opening to be communicated with the air exhaust chamber 211;

the other end of the hot air conveying pipe 46 is communicated with the air inlet cavity 210, the discharging pipe 29 communicated with the air exhaust cavity 211 is installed on the grain inlet longitudinal barrel 21, hot air in the heat insulation cover 45 enters the air inlet cavity 210 through the hot air conveying pipe 46 and then enters the rotary hollow shaft 25, the rotary hollow shaft 25 conducts heat to grains inside, preferably, a heat conducting cavity 26 is formed in the grain turning conveying plate 27, the heat conducting cavity 26 is communicated with the rotary hollow shaft 25, a heat absorbing layer is installed on the inner wall of the heat conducting cavity 26, the grain turning conveying plate 27 conducts heat to the grains in the grain turning pushing-in process, the utilization efficiency of the heat in the hot air is further improved, and the preheating effect of the grains is further improved.

Example three:

as shown in fig. 1 and 10, the present embodiment is different from embodiments 1 and 2 in that the grain conveying mechanism 3 includes two sets of roller mounting brackets 32, the roller mounting brackets 32 are inclined upward in a direction away from the grain lifting mechanism 4, grain conveying rollers 33 are rotatably disposed at both ends of the roller mounting brackets 32, the grain conveying rollers 33 are driven by electric equipment, the two sets of grain conveying rollers 33 are connected by a grain conveying belt 31, and the grain conveying belt 31 conveys grains during rotation of the grain conveying rollers 33;

grain conveyer belt 31's outer band face is fixed before setting up, two sets of side shield 36 in back, two sets of side shield 36 lead the transport of grain, in order to prevent grain in the transportation process in the past, the back both sides drop, install multicomponent baffle 37 between two sets of side shield 36, division board 37 can prevent effectively that grain from gliding down and falling to ground in transportation process, the quick effective transport of grain has been guaranteed, avoid grain to fall to the ground and need artifical grain to the ground to collect, the manpower is saved.

Example four:

as shown in fig. 1 and 9, the present embodiment is different from embodiments 1, 2, and 3 in that a fixed support frame 34 is fixedly disposed at the top of a movable bottom plate 1, the top of the fixed support frame 34 is connected to a roll body mounting frame 32 through a hinge seat, an adjustable support frame 35 is disposed below the other end of the roll body mounting frame 32, specifically, the adjustable support frame 35 includes a vertical plate 351 fixedly disposed at the top of the movable bottom plate 1, an internal thread block 355 is slidably mounted on one side of the vertical plate 351 through a sliding rail, upper and lower two sets of connecting seats 352 are fixedly disposed on one side of the vertical plate 351 through bolts, a thread adjusting rod 354 is rotatably disposed between the two sets of connecting seats 352 through a bearing, the internal thread block 355 is in threaded connection with the thread adjusting rod 354, the bottom end of the thread adjusting rod 354 passes through the connecting seat 352 located below and is connected to an adjusting rocking handle 356, a diagonal bracing column 353 is mounted on one side of the internal thread block 355 opposite to the vertical plate 351 through a hinge seat, and one end of the diagonal bracing column 353, which the diagonal bracing column 353 is far away from the internal thread mounting frame 355, is connected to the bottom of the roll body 32 through a hinge seat;

before grain conveying, an operator rotates the adjusting crank 356 to rotate the thread adjusting rod 354, so that the internal thread block 355 slides upwards or downwards along a sliding rail on the vertical plate 351, the inclined strut 353 jacks up or pulls down the roller body mounting frame 32 in the process, the inclination angle of the grain conveying belt 31 is changed until the conveying height of the grain is adjusted to the required height to be butted with corresponding grain collecting equipment, the grain collecting equipment with different heights is conveniently butted, the operation is simple, and the use is facilitated; preferably, the number of bracing column 353 is two sets of in order to correspond with two sets of roll body mounting bracket 32, improves the support effect, and the number correspondence of screw thread adjusting rod 354 is equipped with two sets ofly and connects through chain and sprocket drive, realizes the synchro-control of two sets of bracing columns 353, improves regulation efficiency.

The working process and principle of the invention are as follows:

when in use, the inclination angle of the grain conveying belt 31 is adjusted by the adjustable support frame 35 in the grain conveying mechanism 3 until the output side of the grain conveying belt 31 is butted with grain collecting equipment; the grain feeding motor 28 in the grain pushing mechanism 2 is started and drives the rotary hollow shaft 25 to rotate, the rotary hollow shaft 25 drives each group of grain turning conveying plates 27 to rotate, grains enter the grain feeding longitudinal cylinder 21 through the grain feeding opening 23, the grains are pushed to the grain falling opening 24 in the turning process of the grain turning conveying plates 27, and the grains enter the transfer passage 22 through the grain falling opening 24; the transit channel 22 gathers grains and enables the grains to enter the inner bottom end of the vertical lifting cylinder 41 in the grain lifting mechanism 4, a grain lifting motor 42 in the grain lifting mechanism 4 is started, the grain lifting motor 42 enables the grain screw shaft 43 to rotate, the grain screw shaft 43 lifts the grains inside in the rotating process, and the lifted grains enter a circular conveying cavity 51 in the air separation screening box 5 through the grain transit pipe 17;

the grain in the circular conveying cavity 51 vertically falls in a row along the longitudinal direction through the strip-shaped feed opening 55, the air heater 9 heats the inlet air to generate hot air, the hot air enters the blast pipe 18, the blast pipe 18 horizontally sprays the hot air into the grain winnowing chamber 52 through the blast nozzle 16, the falling direction of the grain is vertical to the hot air spraying direction, the empty shell and dust in the grain enter the dust shell gathering chamber 53 under the action of wind power to perform the function of winnowing and removing impurities and improve the quality of the grain, and the heat in the hot air is helpful for evaporating the moisture on the surface of the grain to primarily dry the grain and is helpful for the subsequent storage of the grain; meanwhile, the exhaust fan 10 is started and pumps the interior of the filtering and deslagging box 6 into a negative pressure state, and the air suction pipe 8 sucks the air carrying the shell dust in the dust shell gathering chamber 53 out due to the negative pressure effect and enables the air to enter the filtering and deslagging box 6, so that the shell dust in the dust shell gathering chamber 53 can be sucked out in time;

the grains without the dust and impurities in the empty shells fall downwards onto the screening drying plate 12 in the screening drying chamber 54, the screening drying plate 12 screens the grains, damaged fine grains fall downwards into the fine grain collecting hopper 14, the first vibrator 124 enables the screening drying plate 12 to vibrate to facilitate the forward movement of the screened grains and prevent the blocking of the screening holes 123, the transverse heating strips 121 and the longitudinal heating strips 122 on the screening drying plate 12 convert electric energy into heat energy and conduct the heat energy to the grains above, so that the grains are dried again, and moisture on the surfaces of the grains can be effectively removed in the forward movement process of the grains, so that the grains are kept dry, and the grains are beneficial to subsequent storage; through the direction motion of screening dry grain towards grain derivation board 13, grain derivation board 13 carries grain to grain conveying mechanism 3 on the grain conveyer belt 31, and grain conveyer belt 31 carries grain to grain collecting device, finally realizes the automatic transport of grain, does not need the manual work to carry grain and collect, reduces the cost of labor, and easy operation is quick.

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 understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A grain conveyor with an impurity winnowing function comprises a movable bottom plate (1) and a grain conveying mechanism (3), wherein a plurality of groups of rollers are fixedly mounted at the bottom of the movable bottom plate (1), and the grain conveying mechanism (3) is mounted at the top of the movable bottom plate (1), and is characterized in that a grain lifting mechanism (4) positioned at the input side of the grain conveying mechanism (3) is fixedly mounted at the top of the movable bottom plate (1), a box body mounting plate (7) is fixedly arranged at one side, close to the top end, of the grain lifting mechanism (4) and facing the grain conveying mechanism (3), and a grain pushing mechanism (2) is fixedly arranged at one side, close to the bottom end, of the grain lifting mechanism (4) and facing away from the grain conveying mechanism (3);

the bottom of the box body mounting plate (7) is fixedly provided with an air separation screening box (5), a round conveying cavity (51), a grain winnowing chamber (52) and a screening drying chamber (54) are formed in the air separation screening box (5), the round conveying cavity (51) is communicated with a grain lifting mechanism (4) through an obliquely arranged grain transit pipe (17), the round conveying cavity (51) is positioned above the grain winnowing chamber (52) and is communicated with the grain winnowing chamber through a strip-shaped discharging opening (55), the lower part of the grain winnowing chamber (52) is communicated with the screening drying chamber (54), a dust shell gathering chamber (53) is formed in the air separation screening box (5), and the dust shell gathering chamber (53) and the grain winnowing chamber (52) are positioned on two sides of the interior of the air separation screening box (5);

an air heater (9) is fixedly arranged on the side wall of the air separation screening box (5), and a blast pipe (18) is arranged at the output port of the air heater (9); the grain winnowing machine is characterized in that a blast nozzle (16) is installed on the inner wall of the grain winnowing chamber (52), one end, far away from the hot air machine (9), of the blast pipe (18) is connected with the blast nozzle (16), the blast direction of the blast nozzle (16) faces the inlet of the dust shell gathering chamber (53), a screening drying plate (12) is fixedly arranged in the grain winnowing chamber (52), a grain guide-out plate (13) is fixedly arranged on one side, facing the grain conveying mechanism (3), of the winnowing screening box (5), the screening drying plate (12) inclines downwards in the direction of the grain guide-out plate (13), a fine grain collecting hopper (14) is fixedly arranged at the bottom of the winnowing screening box (5), and a fine grain pumping pipe (15) is installed at the bottom of the fine grain collecting hopper (14);

the fixed filter deslagging box (6) that sets up in top of box mounting panel (7), install on wind selection sieve workbin (5) and inhale material pipe (8) with communicating convulsions in dirt shell gathering room (53) bottom, and the other end that the material pipe (8) were inhaled in the convulsions communicates with each other with wind selection sieve workbin (5), the fixed first vibrator (124) that sets up in bottom of sieve material drying plate (12), sieve material hole (123) of lining up its upper and lower both sides are evenly seted up on sieve material drying plate (12), the top of sieve material drying plate (12) is fixed to be set up multiunit horizontal heat generation strip (121) and vertical heat generation strip (122), and the top terminal surface of horizontal heat generation strip (121) and vertical heat generation strip (122) flushes with the top terminal surface of sieve material drying plate (12), all be equipped with electric heating wire in horizontal heat generation strip (121) and vertical heat generation strip (122).

2. The grain conveyor with the impurity winnowing function according to claim 1, wherein the grain conveying mechanism (3) comprises two groups of obliquely arranged roller mounting frames (32), grain conveying rollers (33) are rotatably arranged at two ends of each roller mounting frame (32), the two groups of grain conveying rollers (33) are connected through grain conveying belts (31), a fixed supporting frame (34) fixedly connected with the movable bottom plate (1) is arranged at the bottom of one end of each roller mounting frame (32), and an adjustable supporting frame (35) is arranged below the other end of each roller mounting frame (32); the outer belt surface of the grain conveying belt (31) is fixedly provided with a front group of side baffle plates (36) and a rear group of side baffle plates (36), and a multi-component partition plate (37) is arranged between the two groups of side baffle plates (36).

3. The grain conveyor with the impurity winnowing function according to claim 2, wherein the adjustable support frame (35) comprises a vertical plate (351) fixedly arranged at the top of the movable bottom plate (1) and an internal thread block (355) slidably arranged on one side of the vertical plate (351), one side of the vertical plate (351) is fixedly provided with an upper group of connecting seats (352) and a lower group of connecting seats (352), a thread adjusting rod (354) is rotatably arranged between the two groups of connecting seats (352) through a bearing, the internal thread block (355) is in threaded connection with the thread adjusting rod (354), the bottom end of the thread adjusting rod (354) penetrates through the connecting seat (352) below and is connected with the adjusting crank (356), one side of the internal thread block (355) opposite to the vertical plate (351) is provided with a diagonal brace (353), and one end, far away from the internal thread block (355), of the diagonal brace (353) is connected with the roller body mounting frame (32).

4. The grain conveyor with the impurity winnowing function according to claim 1, wherein a horizontally arranged dust-shell blocking net (61) is installed in the filtering and deslagging box (6), the communication position of the air draft material suction pipe (8) and the filtering and deslagging box (6) is positioned below the dust-shell blocking net (61), and a second vibrator (63) is fixedly arranged at the bottom of the dust-shell blocking net (61); a dust pumping shell pipe (62) communicated with the bottom of the filtering and deslagging box (6) is installed on the filtering and deslagging box (6), an exhaust pipe (11) communicated with the filtering and deslagging box (6) and positioned above the dust shell blocking net (61) at the communication part is installed on the filtering and deslagging box, and an exhaust fan (10) is installed on the exhaust pipe (11); grain hoist mechanism (4) are including vertical lifting cylinder (41), the outer peripheral face parcel of vertical lifting cylinder (41) has heat preservation housing (45), the one end that filters slagging-off case (6) was kept away from in exhaust pipe (11) communicates with each other with the inside of heat preservation housing (45), and separates through heat conduction interlayer (44) between vertical lifting cylinder (41) and heat preservation housing (45).

5. The grain conveyor with the impurity winnowing function according to claim 4, characterized in that a grain lifting motor (42) is fixedly arranged at the top of the vertical lifting cylinder (41) through a motor base, a grain screw shaft (43) is rotatably arranged in the vertical lifting cylinder (41) through a bearing, a spiral lifting blade is arranged on the outer peripheral surface of the grain screw shaft (43), one side of the vertical lifting cylinder (41) close to the top end is connected with an inlet of a grain transit pipe (17), and one side of the vertical lifting cylinder (41) close to the bottom end is connected with a grain pushing mechanism (2).

6. The grain conveyor with the impurity winnowing function according to claim 5, characterized in that the grain pushing mechanism (2) comprises a grain feeding longitudinal cylinder (21) and a transit passage (22), a grain feeding opening (23) is formed in one side of the grain feeding longitudinal cylinder (21) back to the grain lifting mechanism (4), a grain dropping opening (24) is formed in one side of the grain feeding longitudinal cylinder (21) facing the grain lifting mechanism (4), and the transit passage (22) is communicated with the grain dropping opening (24) and the vertical lifting cylinder (41);

the opening diameter of the transfer channel (22) facing one side of the grain dropping opening (24) is larger than that of the other side of the grain dropping opening, a rotary hollow shaft (25) is installed in the grain feeding longitudinal cylinder (21) along the Y direction, a plurality of groups of grain turning conveying plates (27) are installed on the peripheral surface of the rotary hollow shaft (25), and one side, far away from the rotary hollow shaft (25), of each grain turning conveying plate (27) is in contact with the inner wall of the grain feeding longitudinal cylinder (21).

7. The grain conveyor with the impurity winnowing function according to claim 6, wherein a first rotating pipe (212) is installed at one end of the rotating hollow shaft (25), a second rotating pipe (213) is installed at the other end of the rotating hollow shaft (25), an air exhaust chamber (211) is formed inside the front side of the grain inlet longitudinal barrel (21), an air inlet chamber (210) is formed inside the rear side of the grain inlet longitudinal barrel (21), an opening is formed in the outer peripheral surface of the first rotating pipe (212) to communicate the air inlet chamber (210) with the rotating hollow shaft (25), and an opening is formed in the outer peripheral surface of the second rotating pipe (213) to communicate the air exhaust chamber (211) with the rotating hollow shaft (25);

a hot air conveying pipe (46) is mounted on a heat-insulating housing (45) wrapped outside the vertical lifting cylinder (41), the other end of the hot air conveying pipe (46) is communicated with the air inlet cavity (210), a discharging pipe (29) communicated with the air exhaust cavity (211) is mounted on the grain inlet longitudinal cylinder (21), a heat conducting cavity (26) is formed in the grain turning conveying plate (27), the heat conducting cavity (26) is communicated with the rotary hollow shaft (25), and a heat absorbing layer is mounted on the inner wall of the heat conducting cavity (26); one end of the grain feeding longitudinal cylinder (21) is fixedly provided with a grain feeding motor (28) through a motor base, and the output end of the grain feeding motor (28) is connected with the second rotating pipe (213).