CN210901200U - A grain dryer with screening function - Google Patents

Abstract

The utility model relates to a grain drier with a screening function, belonging to the technical field of grain drying equipment; a plurality of heating rods are fixed on the inner side walls of the front side and the rear side of the box body at equal intervals, a feed inlet is arranged on the left side of the upper side wall of the box body, a conveying mechanism is arranged on the left side of the box body, the middle end of the conveying mechanism is supported on the ground through a support rod, the lower end of the conveying mechanism is inserted in the placing box, a screening mechanism is arranged inside the box body, a first collecting box is arranged on the right side of the box body and is placed on a supporting platform, a second collecting box is arranged on the lower side of the supporting platform, a third collecting box is arranged on the lower side of the box body, grains in the placing box are conveyed to the upper side of the box body through the conveying mechanism and are poured into the box body from the feed inlet, the grains are heated and dried through the heating rods in the downward falling process and are filtered through a filter plate in, low manufacturing cost and the like.

Description

A grain dryer with screening function

technical field

The utility model relates to the technical field of grain drying equipment, in particular to a grain dryer with a screening function.

Background technique

Grain is an organism of life, and moisture is the condition for its survival. Excessive moisture alone will induce the growth of insects and microorganisms, which will easily cause the grain to heat up, ferment, deteriorate and reduce the germination rate. Taking grain as an example, the moisture content of grain at harvest It is 20%-30%, and it needs to be reduced to a safe moisture content of 10%-15% as soon as possible during storage. my country's grains are harvested 1-3 times a year and have to be stored for several years. At present, the main methods of controlling grain moisture include natural drying and grain drying. Dryer dry.

Natural drying is easily affected by weather and site. In the main grain-producing areas, due to the large output and insufficient drying space, the moisture of the grain purchased by the grain depot often exceeds the safe moisture content, which is the main factor leading to the mildew of grain, especially in grain purchase The period is catching up with the cloudy days, and even more so, the existing grain dryers cannot classify and collect grains of different sizes, so that the grains of different sizes are collected together, which reduces the overall quality of the grains and needs to be improved.

Utility model content

The purpose of this utility model is to aim at the defects and deficiencies of the prior art, to provide a grain dryer with a screening function, which is simple in structure, reasonable in design and convenient in use. On the upper side, it is poured into the box from the feeding port, heated and dried by a heating rod during the downward pouring process, and then filtered by the filter plate in the screening mechanism, and collected in different collections after filtering. inside the box so that the grains can be screened.

In order to achieve the above purpose, the technical scheme adopted by the utility model is: it includes a box body, a support foot, a heating rod, a transmission mechanism, a placing box, a screening mechanism, a No. 1 collection box, a No. 2 collection box, a No. 3 collection box and a support table The four corners of the lower surface of the box are fixed with feet, the inner side walls of the front and rear sides of the box are fixed with several heating rods at equal distances, the left side of the upper side wall of the box is provided with a feeding port, and the left side of the box is There is a conveying mechanism on the side, the upper end of the conveying mechanism is suspended on the upper side of the feeding port, the middle end of the conveying mechanism is supported on the ground by a support rod, and the lower end of the conveying mechanism is inserted into the placing box, and the placing box is set in the On the ground on the left side of the box body, there is a screening mechanism inside the box body, and a No. 1 collection box is placed on the right side of the box body. , the left side of the No. 2 collection box is arranged on the lower side of the box body, and the lower side of the box body is provided with a No. 3 collection box;

The above-mentioned conveying mechanism also includes a driving wheel, a driven wheel, a No. 1 motor, a conveyor belt, a scraper and a fixing plate. The front and rear ends of the driving wheel are provided with fixing plates, and the rotating shaft at the front end of the driving wheel passes through the bearing and the fixing plate at the front end. After screwing, the rotating shaft at the rear end passes through the fixing plate at the rear end and the rear side wall of the placing box in turn, and is fixedly connected with the output shaft of the No. 1 motor. The No. 1 motor is fixed on the outer wall of the rear side of the placing box, and it is The external power supply is connected, and the driving wheel is connected with the driven wheel through the conveyor belt. The rotating shafts at the front and rear ends of the driven wheel are screwed to the right ends of the fixed plates at the front and rear ends respectively through bearings. The support rod is arranged on the lower side of the conveyor belt. ” shape, the vertical rods at the front and rear ends are respectively fixedly connected with the lower side walls of the fixing plates at the front and rear ends, and several scrapers are fixed at equal distances on the outer surface of the conveyor belt. Elastic baffle, the two ends of the elastic baffle are fixedly connected with the scrapers on both sides respectively, and the lower end of the elastic baffle is fixed on the conveyor belt;

The above-mentioned screening mechanism is composed of a No. 1 filter plate, a No. 2 filter plate, a No. 1 guide pipe, a No. 2 guide pipe and a discharge pipe. The No. 1 filter plate is arranged above the inside of the box, and its right end is inclined downward. Setting, the outer frame on the outer side wall of the No. 1 filter plate is fixedly connected with the inner side wall of the box body, the upper end of the right side of the No. 1 filter plate is provided with a No. 1 guide pipe, and the left end of the No. It is arranged in the same vertical plane. After its right end passes through the right side wall of the box body, it is inserted into the No. 1 collection box. The No. 1 collection box is provided with a No. 2 guide pipe on the lower left side, and the lower end of the No. 2 guide pipe is inserted In the No. 2 collection box, its upper end is inserted on the right side wall of the box body, the upper end of the No. 2 guide pipe is arranged in the same vertical plane with the inner side wall of the right side of the box body, and the lower side inside the box body is provided with two No. 2 filter plate, the filter hole of the No. 2 filter plate is smaller than that of the No. 1 filter plate, the right end of the No. 2 filter plate is set on the lower side of the left end of the No. 2 guide tube, and its left end is inclined upward, and the outer side of the No. 2 filter plate is arranged. The outer frame on the wall is fixedly connected with the inner side wall of the box body, and a discharge pipe is inserted on the lower side wall of the box body. inside the box.

Further, the lower sides of the No. 1 filter plate and the No. 2 filter plate are all suspended with cams, and the upper surfaces of the cams are respectively arranged in contact with the lower surfaces of the No. 1 filter plates and the No. 2 filter plates, and the center of the cam is inserted into the There is a rotating rod, the front end of the rotating rod is screwed with the inner side wall of the front side of the box through the bearing, and the rear end of the rotating rod passes through the rear side wall of the box, and is fixedly connected with the output shaft of the No. 2 motor. The motor is fixed on the outer side wall of the rear side of the box, and is connected with an external power source.

Further, the left and right sides of the upper end of the discharge pipe are provided with a No. 1 guide plate, one end of the No. 1 guide plate adjacent to the discharge pipe is fixed on the inner side wall of the lower side of the box, and the other end of the guide plate is fixed on the inner wall of the lower side of the box. On the inner side walls of the left and right sides of the box.

Further, the left side wall of the feeding port is provided with a No. 2 guide plate, the upper end of the No. 2 guide plate is arranged on the lower side of the driven wheel, and the lower end of the No. 2 guide plate is suspended inside the box after being inclined to the right.

Further, the right side inside the placement box is provided with a No. 3 guide plate, the No. 3 guide plate is arranged in a right-angled triangle, its right side wall is fixed on the inner side wall of the right side of the placing box, and its lower end is fixed on the lower side of the placing box. on the inner side wall.

Further, the left side of the box body is provided with a dust collection box, and the upper end of the right side wall of the dust collection box is integrally formed with two sewage inlet pipes, and the two sewage inlet pipes are respectively inserted into the holes on the left side wall of the box body. In the two openings, the right side of the opening is provided with a filter screen, the filter screen is respectively arranged on the upper side of the No. 1 filter plate and the No. 2 filter plate, and the left side wall is fixed on the inner side wall of the left side of the box body 1. There are fans on the right side of No. 1 filter plate and No. 2 filter plate. The fans are respectively embedded in the through holes on the right side wall of the box. The through holes are arranged at the same level as the opening. The wall is fixedly connected with the inner side wall of the through hole.

Further, a sealing ring is sleeved on the outer side wall of the sewage inlet pipe, and the outer side wall of the sealing ring is arranged in conflict with the inner side wall of the opening.

After adopting the above structure, the beneficial effects of the present utility model are:

1. The grains placed in the box are transferred to the upper side of the box through the conveying mechanism, poured into the box from the feeding port, heated and dried by the heating rod during the downward pouring process, and then passed through the screening mechanism. The No. 1 filter plate and the No. 2 filter plate are filtered in turn, and after filtering, they are collected in the No. 1 collection box, the No. 2 collection box and the No. 3 collection box, so that the grains can be screened;

2. There are several scrapers equidistantly on the conveyor belt in the conveying mechanism. The grains are transported to the upper side by the scrapers. The front and rear sides of the scraper are provided with elastic baffles, which can be fixed and limited to the scraper through the elastic baffles. inside the board to prevent it from falling during the upward movement;

3. There are No. 1 filter plate and No. 2 filter plate in the screening mechanism, which can screen grains in three grades, so that the screening can be more detailed.

Description of drawings:

FIG. 1 is a front sectional view of the utility model.

FIG. 2 is a top view of the utility model.

FIG. 3 is an enlarged view of part A in FIG. 1 .

FIG. 4 is an enlarged view of part B in FIG. 1 .

FIG. 5 is an enlarged view of part C in FIG. 1 .

FIG. 6 is an enlarged view of part D in FIG. 2 .

7 is a schematic structural diagram of a dust collection box in the present invention.

Description of reference numbers:

Box 1, feet 2, heating rod 3, transmission mechanism 4, driving wheel 4-1, driven wheel 4-2, No. 1 motor 4-3, conveyor belt 4-4, scraper 4-5, fixed plate 4-6 , support rod 4-7, elastic baffle 4-8, placement box 5, screening mechanism 6, No. 1 filter plate 6-1, No. 2 filter plate 6-2, No. 1 guide tube 6-3, No. 2 guide tube 6-4, discharge pipe 6-5, No. 1 collection box 7, No. 2 collection box 8, No. 3 collection box 9, support table 10, feed port 11, cam 12, rotating rod 13, No. 2 motor 14, No. 1 guide plate 15 , No. 2 guide plate 16 , No. 3 guide plate 17 , dust collection box 18 , sewage inlet pipe 19 , opening 20 , filter screen 21 , fan 22 , through hole 23 , and sealing ring 24 .

Detailed ways:

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Fig. 1-Fig. 7, this specific embodiment adopts the following technical solutions: it includes a box body 1, a supporting foot 2, a heating rod 3, a conveying mechanism 4, a placing box 5, a screening mechanism 6, a No. 1 collection box 7, a second The No. 8 collection box 8, the No. 3 collection box 9 and the support table 10, the four corners of the lower surface of the box body 1 are welded and fixed with feet 2, and the inner side walls of the front and rear sides of the box body 1 are equidistantly fixed with several bolts. Rod 3, a feeding port 11 is provided on the left side of the upper side wall of the box body 1, and a transmission mechanism 4 is provided on the left side of the box body 1. The upper end of the transmission mechanism 4 is suspended on the upper side of the feeding port 11, and the transmission The middle end of the mechanism 4 is supported on the ground by the support rods 4-7, and the lower end of the transmission mechanism 4 is inserted into the placing box 5, the placing box 5 is arranged on the ground on the left side of the box body 1, and the box body 1 is provided with In the screening mechanism 6, the right side of the box body 1 is provided with a No. 1 collection box 7, the No. 1 collection box 7 is placed on a support table 10, and a No. 2 collection box 8 is arranged on the lower side of the support table 10. The No. 2 collection box The left side of 8 is arranged on the lower side of the box body 1, and the lower side of the box body 1 is provided with the third collection box 9;

The above-mentioned conveying mechanism 4 also includes a driving wheel 4-1, a driven wheel 4-2, a No. 1 motor 4-3, a conveyor belt 4-4, a scraper 4-5 and a fixed plate 4-6. The front and rear ends are provided with fixed plates 4-6, and the rotating shaft at the front end of the driving wheel 4-1 is screwed with the fixed plate 4-6 at the front end through a bearing. The bearing is embedded in the fixed plate 4-6 at the front end, and its The outer ring is welded and fixed to the inner side wall of the fixing plate 4-6, and the inner ring is welded and fixed to the rotating shaft at the front end of the driving wheel 4-1. After the rear side wall of box 5, it is fixed by welding with the output shaft of No. 1 motor 4-3. The model of the motor 4-3 is YS-70KTYZ. The driving wheel 4-1 is connected with the driven wheel 4-2 through the conveyor belt 4-4. The rotating shafts at the front and rear ends of the driven wheel 4-2 are connected to the front and rear end fixing plates 4 through bearings respectively. The right end of -6 is screwed, the bearing is embedded in the fixed plates 4-6 at the front and rear ends respectively, and its outer ring is welded and fixed with the inner side walls of the fixed plates 4-6 at the front and rear ends respectively, and the inner ring is respectively connected with the driven wheel. 4-2 The rotating shafts at the front and rear ends are fixed by welding, and the support rod 4-7 is arranged on the lower side of the conveyor belt 4-4. The support rod 4-7 is arranged in an "H" shape, and the vertical rods at the front and rear ends are respectively connected to the front and rear ends. The lower side wall of the fixing plate 4-6 is fixed by welding, and several scrapers 4-5 are fixedly glued and fixed on the outer surface of the conveyor belt 4-4 at equal distances. There is an elastic blocking cloth 4-8, the two ends of the elastic blocking cloth 4-8 are respectively adhered and fixed with the scrapers 4-5 on both sides, and the lower end of the elastic blocking cloth 4-8 is adhered and fixed on the conveyor belt 4-4;

The above-mentioned screening mechanism 6 is composed of a No. 1 filter plate 6-1, a No. 2 filter plate 6-2, a No. 1 guide pipe 6-3, a No. 2 guide pipe 6-4 and a discharge pipe 6-5. The filter plate 6-1 is arranged above the inside of the box body 1, and its right end is inclined downward. The upper end of the right side of -1 is provided with a No. 1 guide tube 6-3. The left end of the No. 1 guide tube 6-3 is arranged in the same vertical plane as the inner wall of the right side of the box body 1, and its right end passes through the right side of the box body 1. After the wall, it is inserted into the No. 1 collection box 7, the left end of the No. 1 guide pipe 6-3 is welded and fixed with the right side wall of the box body 1, and the lower left side of the No. 1 collection box 7 is provided with the No. 2 guide pipe 6-4 , the lower end of the No. 2 guide tube 6-4 is inserted in the No. 2 collection box 8, and its upper end is inserted on the right side wall of the box 1, and is fixed by welding, and the upper end of the No. 2 guide tube 6-4 is connected to the The inner side wall on the right side of the box body 1 is arranged in the same vertical plane, and the lower side inside the box body 1 is provided with a No. 2 filter plate 6-2, and the filter hole of the No. 2 filter plate 6-2 is smaller than that of the No. 1 filter plate 6-1 The right end of the No. 2 filter plate 6-2 is arranged on the lower side of the left end of the No. 2 guide tube 6-4, and its left end is inclined upward, and the outer frame on the outer side wall of the No. 2 filter plate 6-2 is arranged with the box body. The inner side wall of 1 is welded and fixed, and the lower side wall of the box body 1 is inserted with a discharge pipe 6-5, which is fixed by welding. Set in the No. 3 collection box 9.

Further, a cam 12 is suspended on the lower side of the No. 1 filter plate 6-1 and the No. 2 filter plate 6-2, and the upper surface of the cam 12 is respectively connected with the No. 1 filter plate 6-1 and the No. 2 filter plate. The lower surface of 6-2 is arranged in contact, the center of the cam 12 is inserted with a rotating rod 13, which is fixed by welding. After passing through the rear side wall of the box body 1, it is welded and fixed with the output shaft of the No. 2 motor 14. The No. 2 motor 14 is fixed on the outer wall of the rear side of the box body 1 by bolts, and it is connected to the external power supply. The No. 2 motor The model of 14 is 60KTYZ, which can speed up the filtering effect of No. 1 filter plate 6-1 and No. 2 filter plate 6-2.

Further, the left and right sides of the upper end of the discharge pipe 6-5 are provided with a No. 1 guide plate 15, and the No. 1 guide plate 15 is adjacent to one end of the discharge pipe 6-5 and is fixed on the lower side of the box 1 by welding. On the inner side wall, the other ends are welded and fixed on the inner side walls of the left and right sides of the box body 1 respectively, which can facilitate the rolling of the smallest grains into the discharge pipes 6-5.

Further, a No. 2 guide plate 16 is welded and fixed on the left side wall of the feeding port 11. The upper end of the No. 2 guide plate 16 is arranged on the lower side of the driven wheel 4-2. It is installed inside the box body 1 to prevent the grains from falling out from the left side wall of the box body 1 when they fall.

Further, the right side inside the placing box 5 is provided with a No. 3 guide plate 17, the No. 3 guide plate 17 is arranged in a right-angled triangle, and its right side wall is welded and fixed on the inner side wall of the right side of the placing box 5, and its lower end is welded. It is fixed on the inner side wall of the lower side of the placing box 5, which can prevent the grains from accumulating on the right side of the inside of the placing box, which cannot be scraped by the scraper 4-5.

Further, the left side of the box body 1 is provided with a dust collection box 18, and the upper end of the right side wall of the dust collection box 18 is integrally formed with two sewage inlet pipes 19, and the two sewage inlet pipes 19 are respectively inserted in the box body. 1. In the two openings 20 on the left side wall, the right side of the opening 20 is provided with a filter screen 21, and the filter screen 21 is respectively arranged on the upper side of the No. 1 filter plate 6-1 and the No. 2 filter plate 6-2, And its left side wall is glued and fixed on the inner side wall of the left side of the box body 1, and the upper right side of the No. 1 filter plate 6-1 and the No. 2 filter plate 6-2 are provided with fans 22, and the fans 22 are respectively embedded In the through hole 23 on the right side wall of the box body 1, the through hole 23 is arranged at the same level as the opening 20, and the outer side wall of the fan 22 is fixedly connected with the inner side wall of the through hole 23 through bolts. of dust to be cleaned.

Further, a sealing ring 24 is sleeved on the outer side wall of the sewage inlet pipe 19, and is fixed by sticking. Leakage from the gap between the openings 20 pollutes the environment.

The working principle of this specific embodiment: pour the grain into the placing box 5, start the No. 1 motor 4-3, the No. 1 motor 4-3 drives the driving wheel 4-1 to rotate, and the driving wheel 4-1 is driven by the conveyor belt 4-4 The driven wheel 4-2 rotates, and the conveyor belt 4-4 drives the scraper 4-5 on its surface to move. When the scraper 4-5 inside the placing box 5 moves to be parallel to the ground, the grain is shoveled up to make the grain fall off. Between the two scrapers 4-5, the scraper 4-5 moves upward until it reaches the upper right side of the driven wheel 4-2. When it continues to rotate, the scraper 4-5 is away from the end of the driven wheel 4-2. Then it slopes downward, and the grains fall down along the scraper 4-5, and then fall to the No. 1 filter plate 6-1 in the box 1 through the No. 2 guide plate 16. During the downward falling process, Start the heating rod 3, heat and dry it through the heating rod 3, and then start the No. 2 motor 14. The No. 2 motor 14 drives the cam 12 to rotate. When the protrusion of the cam 12 touches the No. 1 filter plate 6-1, the Drive the net in the center of the No. 1 filter plate 6-1 to shake, the smaller grains fall from the filter holes of the No. 1 filter plate 6-1 to the No. 2 filter plate 6-2, and the larger grains roll to the right , drop into the No. 1 collection box 7 through the No. 1 guide pipe 6-3, and the grains dropped to the No. 2 filter plate 6-2 are filtered through the No. 2 filter plate 6-2, and the smallest grains are filtered from the No. 2 filter plate. The filter hole of 6-2 drops to the lower side of the inside of the box 1, and then drops into the discharge pipe 6-5 through the No. 1 guide plate 15, and drops into the No. 3 collection box 9 through the discharge pipe 6-5, medium The grains are rolled to the right from the No. 2 filter plate 6-2, and dropped into the No. 2 collection box 8 through the No. 2 guide pipe 6-4, so that the effect of screening can be achieved. Start the fan 22, the fan 22 blows the dust in the grain to the left, and the dust passes through the filter screen 21 and falls into the dust collection box 18, so that the dust in the grain can be removed.

After adopting the above-mentioned structure, the beneficial effects of this specific embodiment are as follows:

1. The grains in the placing box 5 are transported to the upper side of the box body 1 through the conveying mechanism 4, poured into the box body 1 from the feeding port 11, and heated and dried by the heating rod 3 during the downward pouring process. Dry, then filter the No. 1 filter plate 6-1 and the No. 2 filter plate 6-2 in the screening mechanism 6 in turn, and collect the No. 1 collection box 7, the No. 2 collection box 8 and the No. 3 collection box respectively after filtering in the collection box 9, so that the grains can be screened;

2. The conveyor belt 4-4 in the conveying mechanism 4 is provided with several scrapers 4-5 at equal distances, and the grains are transported to the upper side through the scraper 4-5. The front and rear sides of the scraper 4-5 are provided with elastic baffles 4-8, it can be fixed and limited in the scraper 4-5 by the elastic baffle 4-8, so as to prevent it from falling during the upward movement;

3. The screening mechanism 6 is provided with a No. 1 filter plate 6-1 and a No. 2 filter plate 6-2, which can screen grains in three grades, so that the screening can be more detailed;

4. The lower surface of the center of the No. 1 filter plate 6-1 and the No. 2 filter plate 6-2 is in contact with the cam 12. When the cam 12 rotates, when the convex position of the cam 12 touches the No. 1 filter plate 6- When the net in the center of the No. 1 and No. 2 filter plates 6-2, the net can be driven to shake, so that the screening can be better;

5. There is a fan 22 in the through hole 23 on the right side wall of the box body 1. The dust in the grain can be blown to the left by the fan 22. After the dust passes through the filter screen 21, it falls into the dust collection box 18. Thereby, the effect of removing dust in the grain can be achieved.

Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principle of the present utility model, any modifications, equivalent replacements, improvements, etc. made shall be included within the protection scope of the present utility model.

Claims (7)

1. The utility model provides a grain drier with screening function which characterized in that: the device comprises a box body (1), support legs (2), heating rods (3), a conveying mechanism (4), a placing box (5), a screening mechanism (6), a first collecting box (7), a second collecting box (8), a third collecting box (9), support rods (4-7) and a supporting table (10), wherein the support legs (2) are fixed at four corners of the lower surface of the box body (1), a plurality of heating rods (3) are fixed at equal intervals on the inner side walls of the front side and the rear side of the box body (1), a feed inlet (11) is formed in the left side of the upper side wall of the box body (1), the conveying mechanism (4) is arranged on the left side of the box body (1), the upper end of the conveying mechanism (4) is suspended on the upper side of the feed inlet (11), the middle end of the conveying mechanism (4) is supported on the ground through the support rods (4-7), the lower end of the conveying mechanism (4) is inserted into the placing box (5, a screening mechanism (6) is arranged in the box body (1), a first collecting box (7) is arranged on the right side of the box body (1), the first collecting box (7) is placed on a supporting table (10), a second collecting box (8) is arranged on the lower side of the supporting table (10), the left side of the second collecting box (8) is arranged on the lower side of the box body (1), and a third collecting box (9) is arranged on the lower side of the box body (1);

the conveying mechanism (4) further comprises a driving wheel (4-1), a driven wheel (4-2), a first motor (4-3), a conveying belt (4-4), a scraper (4-5) and a fixing plate (4-6), wherein the front end and the rear end of the driving wheel (4-1) are respectively provided with the fixing plate (4-6), a rotating shaft at the front end of the driving wheel (4-1) is connected with the fixing plate (4-6) at the front end in a screwing mode through a bearing, a rotating shaft at the rear end of the driving wheel sequentially penetrates through the fixing plate (4-6) at the rear end and the rear side wall of the placing box (5) and then is fixedly connected with an output shaft of the first motor (4-3), the first motor (4-3) is fixed on the outer side wall at the rear side of the placing box (5) and is connected with an external power supply, the driving wheel (4-1) is connected with the driven wheel (, the rotating shafts at the front end and the rear end of the driven wheel (4-2) are respectively connected with the right ends of the front end fixing plate and the rear end fixing plate (4-6) in a rotating mode through bearings, the supporting rods (4-7) are arranged on the lower side of the conveying belt (4-4), the supporting rods (4-7) are arranged in an H shape, the vertical rods at the front end and the rear end of each supporting rod are respectively fixedly connected with the lower side walls of the front end fixing plate and the rear end fixing plate (4-6), a plurality of scraping plates (4-5) are fixed on the outer surface of the conveying belt (4-4) at equal intervals, elastic blocking cloth (4-8) is arranged at the front end and the rear end between every two adjacent scraping plates (4-5), the two ends of each elastic blocking cloth (4-8) are respectively fixedly connected with the scraping;

the screening mechanism (6) consists of a first filter plate (6-1), a second filter plate (6-2), a first guide pipe (6-3), a second guide pipe (6-4) and a discharge pipe (6-5), the first filter plate (6-1) is arranged above the interior of the box body (1), the right end of the first filter plate is arranged in a downward inclined mode, an outer frame on the outer side wall of the first filter plate (6-1) is fixedly connected with the inner side wall of the box body (1), the upper end of the right side of the first filter plate (6-1) is provided with the first guide pipe (6-3), the left end of the first guide pipe (6-3) and the inner side wall of the right side of the box body (1) are arranged in the same vertical plane, the right end of the first guide pipe penetrates through the right side wall of the box body (1) and is inserted into the first collection box (7), the second guide pipe (6-4) is arranged on the, the lower end of the second guide pipe (6-4) is inserted into the second collecting box (8), the upper end of the second guide pipe is inserted into the right side wall of the box body (1), the upper end of the second guide pipe (6-4) and the inner side wall of the right side of the box body (1) are arranged in the same vertical plane, the lower side inside the box body (1) is provided with a second filter plate (6-2), the filter holes of the second filter plate (6-2) are smaller than the filter holes of the first filter plate (6-1), the right end of the second filter plate (6-2) is arranged at the lower side of the left end of the second guide pipe (6-4), the left end of the second filter plate is arranged in an upward inclined mode, an outer frame on the outer side wall of the second filter plate (6-2) is fixedly connected with the inner side wall of the box body (1), a discharge pipe (6-5) is inserted into the lower side wall of the box body (1), and the, is inserted in the third collecting box (9).

2. The grain dryer with the screening function according to claim 1, wherein: the lower sides of the first filter plate (6-1) and the second filter plate (6-2) are respectively provided with a cam (12) in a suspending mode, the upper surface of the cam (12) is respectively in contact with the lower surfaces of the first filter plate (6-1) and the second filter plate (6-2), a rotating rod (13) is inserted into the center of the cam (12), the front end of the rotating rod (13) is connected with the inner side wall of the front side of the box body (1) through a bearing in a rotating mode, the rear end of the rotating rod penetrates through the rear side wall of the box body (1) respectively and then is fixedly connected with the output shaft of the second motor (14), and the second motor (14) is fixed on the outer side wall of the rear side of the box body (1) and is connected with an external power supply.

3. The grain dryer with the screening function according to claim 1, wherein: the left side and the right side of the upper end of the discharge pipe (6-5) are respectively provided with a guide plate (15), one end of the guide plate (15) adjacent to the discharge pipe (6-5) is fixed on the inner side wall of the lower side of the box body (1), and the other end of the guide plate is respectively fixed on the inner side walls of the left side and the right side of the box body (1).

4. The grain dryer with the screening function according to claim 1, wherein: and a second guide plate (16) is arranged on the left side wall of the feeding hole (11), the upper end of the second guide plate (16) is arranged on the lower side of the driven wheel (4-2), and the lower end of the second guide plate is arranged in the box body (1) in a hanging manner after inclining rightwards.

5. The grain dryer with the screening function according to claim 1, wherein: place the inside right side of case (5) and be equipped with No. three deflector (17), this No. three deflector (17) are right triangle and set up, and its right side wall is fixed on placing the inside wall on case (5) right side, and its lower extreme is fixed on placing the inside wall of case (5) downside.

6. The grain dryer with the screening function according to claim 1, wherein: a dust collecting box (18) is arranged on the left side of the box body (1), two sewage inlet pipes (19) are integrally formed at the upper end of the right side wall of the dust collecting box (18), the two sewage inlet pipes (19) are respectively inserted into two openings (20) on the left side wall of the box body (1), a filter screen (21) is arranged on the right side of each opening (20), the filter screen (21) is respectively arranged at the upper sides of the first filter plate (6-1) and the second filter plate (6-2), the left side wall of the filter is fixed on the inner side wall at the left side of the box body (1), fans (22) are arranged above the right sides of the first filter plate (6-1) and the second filter plate (6-2), the fans (22) are respectively embedded in through holes (23) on the right side wall of the box body (1), the through holes (23) are respectively arranged in the same horizontal direction with the openings (20), and the outer side wall of the fan (22) is fixedly connected with the inner side wall of the through holes (23).

7. The grain dryer with the screening function according to claim 6, wherein: the outer side wall of the sewage inlet pipe (19) is sleeved with a sealing ring (24), and the outer side wall of the sealing ring (24) is abutted to the inner side wall of the opening (20).

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