CN112808598A

CN112808598A - Environment-friendly automatic grain screening machine

Info

Publication number: CN112808598A
Application number: CN202110154847.5A
Authority: CN
Inventors: 马东峰; 万传贺; 武迎春
Original assignee: Fuyang Runtai General Machinery Co ltd
Current assignee: Fuyang Runtai General Machinery Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-05-18

Abstract

The invention provides an environment-friendly automatic grain screening machine, and relates to the field of grain processing. According to the invention, dust grass chips and grain particles are sucked into the connecting pipeline under negative pressure and enter the connecting pipe barrel, the dust is filtered through the first filter screen, the dust is filtered through the small filter holes and enters the dust removal box, the grass chips and the grain particles are adsorbed on the first filter screen and intercepted, after the fan stops working, the grass chips and the grain particles are separated from the first filter screen and fall downwards, when the dust enters the electrostatic cloth bag, the dried grass chips are electrostatically adsorbed on the inner wall of the electrostatic cloth bag, the grain particles fall into the storage box, the grain particles are filtered through the second filter screen and enter the storage box, the grass chips which are not electrostatically adsorbed are intercepted by the second filter screen, the grass chips which are not electrostatically adsorbed are filtered and intercepted through the interception limiting device, the adsorbed grain particles are filtered and collected and recycled, the waste of grains can be reduced.

Description

Environment-friendly automatic grain screening machine

Technical Field

The invention relates to the field of grain processing, in particular to an environment-friendly automatic grain screening machine.

Background

The grain refers to a general term of various plant seeds in cooked food, and can also be generically called as 'grain'. The grain crops contain rich nutrient substances, mainly including protein, vitamins, dietary fibers, fat, starch and the like. Grain screening plant is the essential equipment in grain results, transportation, the course of working, and grain can mix some debris inevitable in results, transportation and course of working, including the core of rotten, earth dust, stone, shell or maize, when processing it, need screen it earlier in order to obtain clean grain. Four groups of rubber springs connected to the support frame are used for supporting the screen body, and the driving force is realized by adopting the vibration of two vibration motors. The two vibrating motors start to run simultaneously, and when the rotating directions are opposite, the exciting forces provided by the two vibrating motors are offset in the direction parallel to the axis of the motor and are superposed in the direction perpendicular to the axis of the motor, so that the screen body is subjected to reciprocating linear vibration under the action of the simple harmonic force. When the two motors are installed, the axes and the screen surface of the two motors have certain inclination angles, so that the materials move forward on the screen surface in a bouncing manner under the combined action of the self gravity and the exciting force and move approximately in a linear track, and the materials are automatically classified.

When environment-friendly grain automatic screening machinery carries out grain screening work, dust and grass bits in with grain are inhaled through sack dust removal mechanism and are filtered, but the suction that produces is easily inhaled less grain niblet in the grain, bring into sack dust removal mechanism together with dust and grass bits and filter, cause the waste of grain, and during the impurity material discharge in the grain, receive big or small gravity, the impact size of production differs, and great with the drop between the collecting box, break away from the scope that drops of collecting box when leading to partial impurity material ejection of compact easily, it is very troublesome.

Disclosure of Invention

The invention aims to provide an environment-friendly automatic grain screening machine to solve the technical problem.

In order to solve the technical problems, the invention adopts the following technical scheme: the environment-friendly type grain automatic screening machine comprises a support frame, wherein the left lower corner and the right lower corner of the support frame are connected with idler wheels through rotating shafts, the left upper inner side of the support frame is fixedly provided with a screening main body, the left end of the screening main body is fixedly provided with a feed inlet, the right lower side surface of the front end of the screening main body is provided with an impurity discharging port, the lower end of the impurity discharging port is fixedly provided with an intercepting and limiting device at the right lower side of the screening main body, the lower end of the intercepting and limiting device is connected with a collecting box which is fixedly arranged on the support frame, the right end of the screening main body is fixedly provided with a discharge port, the lower end of the discharge port is fixedly provided with a discharge inclined plate, the right lower end of the discharge inclined plate is fixedly provided with a conveyor belt at the inner right side of the support frame, the dust removal box is fixed on the support frame, an electronic pulse mechanism is fixed on the upper side of the right end of the dust removal box, an air outlet pipe is fixed on the upper side of the left end of the dust removal box, a fan is fixed at the lower end of the air outlet pipe and positioned at the upper right side of the screening main body, and the fan is fixed on the support frame;

a supporting clapboard is fixed at the inner upper side of the dust removal box, filter bags are uniformly fixed at the upper end and the lower end of the supporting clapboard, and a spray head is connected above the filter bags and positioned at the inner upper side of the dust removal box through a pipeline;

intercepting stop device includes fixing bolt, adjusting bolt, adjustment tank, hopper sideboard, slope bent plate and guide slide, the guide slide is installed on row miscellaneous mouthful, and the left and right sides of guide slide upper side spiral connection have fixing bolt, the fixing bolt spiral runs through the guide slide and is connected with row miscellaneous mouthful, the front end upside of guide slide is connected with the hopper sideboard, the right back side in left end of hopper sideboard is provided with the adjustment tank, the middle part spiral connection of adjustment tank has adjusting bolt, the lower extreme front side of hopper sideboard, the place ahead that is located the guide slide is fixed with the slope bent plate.

Preferably, the filtering device comprises a first filter screen, a first electrostatic cloth bag, a second filter screen, a storage box, a drawer and an interception pipe barrel, the interception pipe barrel is fixed on the connecting pipeline through a flange, the first filter screen is fixed on the inner right side of the interception pipe barrel, the electrostatic cloth bag is fixed at the lower end of the interception pipe barrel, the storage box is fixed at the lower end of the electrostatic cloth bag, the second filter screen is fixed at the lower end of the electrostatic cloth bag at the inner upper end of the storage box, and the drawer is inserted into the storage box below the second filter screen.

Preferably, filter equipment includes sealing washer and handle, the front end of storing the box is provided with the pull mouth, and the drawer inserts and gets into and store the box, the sealing washer has been cup jointed to the front side position department of pull mouth of drawer, the front end middle part of drawer is fixed with the handle.

Preferably, screening main part actuating mechanism includes auxiliary stand, rubber spring, shale shaker body, vibrating motor, and auxiliary stand installation rubber spring supports the shale shaker body, vibrating motor in the screening main part is provided with two sets ofly, and when the exciting force direction of rotation that two sets of vibrating motor work produced was opposite.

Preferably, the electronic pulse mechanism comprises a supporting plate, an air bag and an electromagnetic pulse valve, the electromagnetic pulse valve is installed on the air bag through a pipeline, the number of the spray heads is multiple, the spray heads are connected with the electromagnetic pulse valve through pipelines, the number of the filter bags is multiple, and the filter bags are installed on the supporting partition plate and are located on the same vertical central line with the spray heads.

Preferably, the contained angle between hopper sideboard and the slope bent plate is sixty degrees, and the slope bent plate is whole to be U type shape, the whole U type shape that is of guide slide, and the upside part is provided with the joint breach.

Preferably, the number of the fixing bolts is two, the two fixing bolts penetrate through the guide sliding plate and the impurity discharging port in a spiral mode, the guide sliding plate is fixed on the impurity discharging port, the number of the adjusting bolts is two, the two adjusting bolts penetrate through the two adjusting grooves in a spiral mode and are connected with the guide sliding plate, the hopper baffle plate is installed on the guide sliding plate, and the guide sliding plate is installed on the impurity discharging port and is connected with the collecting box in a thirty-degree inclined mode.

Preferably, the first filter screen comprises a frame and a filter screen, the left end and the right end of the filter screen are uniformly penetrated with small filter holes, the static cloth bag is made of polyester cloth, the static cloth bag is in contact with an external static device, and static electricity is generated on the surface.

Preferably, the structure of the second filter screen is the same as that of the first filter screen, and the filter pores uniformly penetrating through the left end and the right end of the filter screen are larger than those on the first filter screen.

Preferably, the front end of drawer is fixed with the limiting plate, and the sealing washer cup joints on the drawer and contacts with the limiting plate, when the drawer passes through the pull mouth and inserts the storage box, the sealing washer of installation and the contact laminating of pull mouth.

The invention has the beneficial effects that:

1. according to the invention, the guide sliding plate is clamped at the impurity discharging port through the clamping notch, the lower end of the guide sliding plate is contacted with the collecting box, the guide sliding plate and the impurity discharging port are fixed through the two fixing bolts in a threaded manner, the two adjusting bolts are unscrewed to enable the hopper baffle plate to be grabbed to move upwards through the adjusting groove, the impurity discharging port is covered, the adjusting bolts are screwed and fixed, when the impurity materials are discharged from the impurity discharging port, the impurity materials are intercepted by the hopper baffle plate and slide along the inclined bent plate in a guiding manner, the impact force is reduced, the impurity materials fall into the movable sliding plate and slide downwards along the guide sliding plate, the problem that the impurity materials cannot fall into the collecting box due to different sizes of the impurity materials is solved, the impact force of the impurity materials falling into the collecting box is reduced through the guide sliding plate.

2. According to the invention, dust grass chips and grain particles are sucked into the connecting pipeline under negative pressure and enter the connecting pipe barrel, the dust is filtered through the first filter screen, the dust is filtered through the small filter holes and enters the dust removal box, the grass chips and the grain particles are adsorbed on the first filter screen and intercepted, after the fan stops working, the grass chips and the grain particles are separated from the first filter screen and fall downwards, when the dust enters the electrostatic cloth bag, the dried grass chips are electrostatically adsorbed on the inner wall of the electrostatic cloth bag, the grain particles fall into the storage box, the grain particles are filtered through the second filter screen and enter the storage box, the grass chips which are not electrostatically adsorbed are intercepted by the second filter screen, the grass chips which are not electrostatically adsorbed are filtered and intercepted through the interception limiting device, the adsorbed grain particles are filtered and collected and recycled, the waste of grains can be reduced.

3. According to the grain storage box, the drawer is inserted into the storage box, the sealing ring is in contact with the drawing opening to keep sealing, when grain particles enter the storage box and are collected by the drawer, the handle is grasped to exert force when the grain particles are taken out, the drawer is drawn out of the storage box, the grain particles can be poured out and recovered, the operation is relatively simple and convenient, and the recovery efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of an environment-friendly automatic grain screening machine according to the present invention;

FIG. 2 is a schematic view of the internal structure of the dust box of the present invention;

FIG. 3 is a schematic perspective view of an intercepting and limiting device according to the present invention;

FIG. 4 is a schematic sectional view of the filter device according to the present invention;

FIG. 5 is a side view of the drawer of the present invention;

reference numerals: 1. a feed inlet; 2. a fan; 3. an air outlet pipe; 4. an electronic pulse mechanism; 5. a dust removal box; 6. a filtration device; 7. a discharge port; 8. a conveyor belt; 9. a discharge sloping plate; 10. intercepting and limiting devices; 11. a collection box; 12. a trash discharge port; 13. a roller; 14. a support frame; 15. screening the main body; 16. a filter bag; 17. a spray head; 101. fixing the bolt; 102. adjusting the bolt; 103. an adjustment groove; 104. a hopper fence; 105. inclining the bending plate; 106. a guide slide plate; 61. a first filter screen; 62. a static cloth bag; 63. a second filter screen; 64. a storage box; 65. a drawer; 66. connecting the pipe barrel; 67. a seal ring; 68. a handle.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-3, the environment-friendly automatic grain screening machine comprises a support frame 14, rollers 13 are connected to the left and right lower corners of the support frame 14 through rotating shafts, a screening main body 15 is fixed to the left upper inner side of the support frame 14, a feed inlet 1 is fixed to the left end of the screening main body 15, a trash discharge port 12 is arranged on the right lower side surface of the front end of the screening main body 15, an interception limiting device 10 is fixed to the right lower side of the screening main body 15, a collection box 11 is connected to the lower end of the interception limiting device 10, the collection box 11 is fixed to the support frame 14, a discharge port 7 is fixed to the right end of the screening main body 15, a discharge sloping plate 9 is fixed to the lower end of the discharge port 7, a conveyor belt 8 is fixed to the right inner side of the support frame 14, a connecting pipe is fixed to the upper end of, a dust removal box 5 is connected to the right side of the filtering device 6 through a connecting pipeline, the dust removal box 5 is fixed on a support frame 14, an electronic pulse mechanism 4 is fixed on the upper side of the right end of the dust removal box 5, an air outlet pipe 3 is fixed on the upper side of the left end of the dust removal box 5, a fan 2 is fixed at the lower end of the air outlet pipe 3 and located at the upper right side of the screening main body 15, and the fan 2 is fixed on the support frame 14; a supporting clapboard is fixed at the inner upper side of the dust removing box 5, filter bags 16 are uniformly fixed at the upper end and the lower end of the supporting clapboard, and a spray head 17 is connected above the filter bags 16 and positioned at the inner upper side of the dust removing box 5 through a pipeline; the intercepting and limiting device 10 comprises a fixing bolt 101, an adjusting bolt 102, an adjusting groove 103, a hopper baffle plate 104, an inclined bent plate 105 and a guide sliding plate 106, the guide sliding plate 106 is installed on the trash discharging port 12, the upper sides of the left end and the right end of the guide sliding plate 106 are in threaded connection with the fixing bolt 101, the fixing bolt 101 penetrates through the guide sliding plate 106 in a threaded mode to be connected with the trash discharging port 12, the upper side of the front end of the guide sliding plate 106 is connected with the hopper baffle plate 104, the right rear side of the left end of the hopper baffle plate 104 is provided with the adjusting groove 103, the middle of the adjusting groove 103 is in threaded connection with the adjusting bolt 102, and the lower end front side of the hopper baffle plate 104 is fixedly provided with the inclined.

When the trash bin is used, the guide sliding plate is clamped at the trash discharging port 12 through the clamping notch, the lower end of the guide sliding plate is in contact with the collecting box 11, the guide sliding plate and the trash discharging port 12 are spirally penetrated through and fixed through the two fixing bolts 101, the two adjusting bolts 102 are unscrewed, the hopper baffle plate 104 is grabbed and moves upwards through the adjusting groove 103, the trash discharging port 12 is covered, the adjusting bolts 102 are screwed and fixed, when the trash materials are discharged from the trash discharging port 12, the trash materials are intercepted by the hopper baffle plate 104 and guided to slide along the inclined bent plate 105, the impact force is reduced, the trash materials fall into the movable sliding plate 106 and incline downwards along the guide sliding plate to slide into the collecting box 11, the problem that the trash materials cannot fall into the collecting box 11 completely due to different sizes of the trash materials is solved, the impact force of the trash materials falling into the collecting box 11 is reduced through the.

Example 2

As shown in fig. 1-4, the environment-friendly automatic grain screening machine comprises a support frame 14, rollers 13 are connected to the left and right lower corners of the support frame 14 through rotating shafts, a screening main body 15 is fixed to the left upper inner side of the support frame 14, a feed inlet 1 is fixed to the left end of the screening main body 15, a trash discharge port 12 is arranged on the right lower side surface of the front end of the screening main body 15, an interception limiting device 10 is fixed to the right lower side of the screening main body 15, a collection box 11 is connected to the lower end of the interception limiting device 10, the collection box 11 is fixed to the support frame 14, a discharge port 7 is fixed to the right end of the screening main body 15, a discharge sloping plate 9 is fixed to the lower end of the discharge port 7, a conveyor belt 8 is fixed to the right inner side of the support frame 14, a connecting pipe is fixed to the upper end of, a dust removal box 5 is connected to the right side of the filtering device 6 through a connecting pipeline, the dust removal box 5 is fixed on a support frame 14, an electronic pulse mechanism 4 is fixed on the upper side of the right end of the dust removal box 5, an air outlet pipe 3 is fixed on the upper side of the left end of the dust removal box 5, a fan 2 is fixed at the lower end of the air outlet pipe 3 and located at the upper right side of the screening main body 15, and the fan 2 is fixed on the support frame 14; a supporting clapboard is fixed at the inner upper side of the dust removing box 5, filter bags 16 are uniformly fixed at the upper end and the lower end of the supporting clapboard, and a spray head 17 is connected above the filter bags 16 and positioned at the inner upper side of the dust removing box 5 through a pipeline; the intercepting and limiting device 10 comprises a fixing bolt 101, an adjusting bolt 102, an adjusting groove 103, a hopper baffle plate 104, an inclined bent plate 105 and a guide sliding plate 106, the guide sliding plate 106 is installed on the trash discharging port 12, the fixing bolt 101 is connected to the upper side of the left end and the right end of the guide sliding plate 106 in a spiral mode, the fixing bolt 101 penetrates through the guide sliding plate 106 in a spiral mode to be connected with the trash discharging port 12, the hopper baffle plate 104 is connected to the upper side of the front end of the guide sliding plate 106, the adjusting groove 103 is arranged on the right rear side of the left end of the hopper baffle plate 104, the adjusting bolt 102 is connected to the middle of the adjusting groove 103 in a spiral mode, the inclined bent plate 105 is fixed to the front portion, located in front of the guide sliding plate 106, of the lower end of the hopper baffle plate 104, the filtering device 6 comprises a first filtering net 61, an electrostatic cloth bag 62, a second filtering net 63, a storage box 64, a drawer, the static cloth bag 62 is fixed at the lower end of the intercepting pipe tube 66, the storage box 64 is fixed at the lower end of the static cloth bag 62, the second filter screen 63 is fixed at the lower end of the static cloth bag 62 at the inner upper end of the storage box 64, and the drawer 65 is inserted into the storage box 64 below the second filter screen 63.

During the use, dust grass bits and grain particle negative pressure inhale connecting tube and get into connecting tube 66, filter through filter screen 61, the dust filters through filtering the aperture and gets into dust removal case 5, and grass bits and grain particle adsorb and are intercepted on filter screen 61 surface, fan 2 stops the back of working, grass bits and grain particle break away from filter screen 61 and drop downwards, when getting into static sack 62, dry grass bits static adsorbs at the static sack 62 inner wall, and grain particle drops into and stores box 64, grain particle filters through filter screen two 63, get into inside the storage box 64, and the grass bits that do not static adsorption are intercepted by filter screen two 63, filter the interception through interception stop device 10, filter the collection with the adsorbed grain particle, and recycle, can reduce the waste to grain, improve the output of grain.

Example 3

As shown in fig. 1-5, the environment-friendly automatic grain screening machine comprises a supporting frame 14, rollers 13 are connected to the left and right lower corners of the supporting frame 14 through rotating shafts, a screening main body 15 is fixed to the left upper inner side of the supporting frame 14, a feeding port 1 is fixed to the left end of the screening main body 15, a trash discharging port 12 is arranged on the right lower side surface of the front end of the screening main body 15, an intercepting and limiting device 10 is fixed to the right lower side of the screening main body 15, a collecting box 11 is connected to the lower end of the intercepting and limiting device 10, the collecting box 11 is fixed to the supporting frame 14, a discharging port 7 is fixed to the right end of the screening main body 15, a discharging inclined plate 9 is fixed to the lower end of the discharging port 7, a conveyor belt 8 is fixed to the right inner side of the supporting frame 14, a connecting pipe is fixed to the upper, a dust removal box 5 is connected to the right side of the filtering device 6 through a connecting pipeline, the dust removal box 5 is fixed on a support frame 14, an electronic pulse mechanism 4 is fixed on the upper side of the right end of the dust removal box 5, an air outlet pipe 3 is fixed on the upper side of the left end of the dust removal box 5, a fan 2 is fixed at the lower end of the air outlet pipe 3 and located at the upper right side of the screening main body 15, and the fan 2 is fixed on the support frame 14; a supporting clapboard is fixed at the inner upper side of the dust removing box 5, filter bags 16 are uniformly fixed at the upper end and the lower end of the supporting clapboard, and a spray head 17 is connected above the filter bags 16 and positioned at the inner upper side of the dust removing box 5 through a pipeline; the intercepting and limiting device 10 comprises a fixing bolt 101, an adjusting bolt 102, an adjusting groove 103, a hopper baffle plate 104, an inclined bent plate 105 and a guide sliding plate 106, the guide sliding plate 106 is installed on the trash discharging port 12, the fixing bolt 101 is connected to the upper side of the left end and the right end of the guide sliding plate 106 in a spiral mode, the fixing bolt 101 penetrates through the guide sliding plate 106 in a spiral mode to be connected with the trash discharging port 12, the hopper baffle plate 104 is connected to the upper side of the front end of the guide sliding plate 106, the adjusting groove 103 is arranged on the right rear side of the left end of the hopper baffle plate 104, the adjusting bolt 102 is connected to the middle of the adjusting groove 103 in a spiral mode, the inclined bent plate 105 is fixed to the front portion, located in front of the guide sliding plate 106, of the lower end of the hopper baffle plate 104, the filtering device 6 comprises a first filtering net 61, an electrostatic cloth bag 62, a second filtering net 63, a storage box 64, a drawer, the lower extreme of interception bobbin 66 is fixed with static sack 62, the lower extreme of static sack 62 is fixed with stores the box 64, store the interior upper end of box 64, the lower extreme that is located static sack 62 is fixed with filter screen two 63, the below of filter screen two 63, the inside that is located storage box 64 is inserted and is had drawer 65, filter equipment 6 includes sealing washer 67 and handle 68, the front end of storing box 64 is provided with the drawing mouth, and drawer 65 inserts and gets into in the storage box 64, the front side of drawer 65 is located drawing mouth position department and has cup jointed sealing washer 67, the front end middle part of drawer 65 is fixed with handle 68.

During the use, store box 64 inside and inserted drawer 65, keep sealed with the contact of pull mouth through sealing washer 67, get into when grain niblet stores box 64, collected by drawer 65, grasp handle 68 when taking out and make power, take drawer 65 out and store box 64 to alright pour out the grain niblet and retrieve, the operation is simple and convenient relatively, improves recovery efficiency.

The working principle of the environment-friendly automatic grain screening machine is as follows: grain enters the screening main body 15 from the feeding port 1, under the action of the exciting force of the vibrating motor, the vibrating screen body vibrates according to a certain motion track, so that the grain is forced to continuously move forwards in the vibrating process, in the process, the material is layered through the screen lattice structure of the vibrating screen body, namely, the impurity material with the particle diameter larger than that of a screen mesh is separated from the grain on the screen surface of the vibrating screen body, the impurity material is discharged from the impurity discharge port 12 on the side surface of the tail end of the screen body, the screened grain is discharged from the discharge port 7 and falls into the conveyor belt 8 through the discharge inclined plate 9 for conveying, the dust removal box 5 also starts to work, the fan 2 starts to work to generate negative pressure, the negative pressure is transmitted to the dust removal box 5 through the air outlet pipe 3, then dust is sucked from the discharge port 7 along a connecting pipeline, dust and grass clippings enter the dust removal box 5 upwards and are filtered through the plurality of filter bags, the air passes through the filter bag 16 and enters the air outlet pipe 3 to be discharged from the air outlet of the fan 2, the fan 2 stops working, the electronic pulse mechanism 4 starts working, gas is sprayed out from the plurality of spray heads 17, dust on the plurality of filter bags 16 is shaken off, and the dust is collected and discharged at the bottom end of the dust removal box 5.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Environment-friendly grain automatic screening machinery, including support frame (14), its characterized in that: the screening machine is characterized in that the left lower corner and the right lower corner of the supporting frame (14) are connected with rollers (13) through rotating shafts, a screening main body (15) is fixed on the left upper inner side of the supporting frame (14), a feeding hole (1) is fixed on the left end of the screening main body (15), a trash discharging hole (12) is formed in the right lower side surface of the front end of the screening main body (15), an intercepting and limiting device (10) is fixed on the right lower side of the screening main body (15) at the lower end of the trash discharging hole (12), a collecting box (11) is connected to the lower end of the intercepting and limiting device (10), the collecting box (11) is fixed on the supporting frame (14), a discharging hole (7) is fixed on the right end of the screening main body (15), a discharging inclined discharging plate (9) is fixed on the lower end of the discharging hole (7), a conveyor belt (8, a connecting pipeline is fixed at the upper end of the discharge port (7), a filtering device (6) is fixed on the connecting pipeline, a dust removal box (5) is connected to the right side of the filtering device (6) through the connecting pipeline, the dust removal box (5) is fixed on the support frame (14), an electronic pulse mechanism (4) is fixed on the upper side of the right end of the dust removal box (5), an air outlet pipe (3) is fixed on the upper side of the left end of the dust removal box (5), a fan (2) is fixed at the lower end of the air outlet pipe (3) and positioned above the right side of the screening main body (15), and the fan (2) is fixed on the support frame (14);

a supporting clapboard is fixed on the inner upper side of the dust removing box (5), filter bags (16) are uniformly fixed at the upper end and the lower end of the supporting clapboard, and spray heads (17) are connected above the filter bags (16) and above the dust removing box (5) through pipelines;

intercepting stop device (10) including fixing bolt (101), adjusting bolt (102), adjustment tank (103), hopper sideboard (104), slope bent plate (105) and guide slide (106), guide slide (106) are installed on trash discharging port (12), and guide slide (106) about the side of serving spiral connection have fixing bolt (101), fixing bolt (101) spiral runs through guide slide (106) and is connected with trash discharging port (12), the front end upside of guide slide (106) is connected with hopper sideboard (104), the right back side in left end of hopper sideboard (104) is provided with adjustment tank (103), the middle part screwed connection of adjustment tank (103) has adjusting bolt (102), the lower extreme front side of hopper sideboard (104), the place ahead that is located guide slide (106) is fixed with slope bent plate (105).

2. The environment-friendly type grain automatic screening machine according to claim 1, characterized in that: the filter device (6) comprises a first filter screen (61), an electrostatic cloth bag (62), a second filter screen (63), a storage box (64), a drawer (65) and an interception pipe barrel (66), wherein the interception pipe barrel (66) is fixed on a connecting pipeline through a flange, the first filter screen (61) is fixed on the inner right side of the interception pipe barrel (66), the electrostatic cloth bag (62) is fixed at the lower end of the interception pipe barrel (66), the storage box (64) is fixed at the lower end of the electrostatic cloth bag (62), the second filter screen (63) is fixed at the lower end of the electrostatic cloth bag (62) at the inner upper end of the storage box (64), and the drawer (65) is inserted into the storage box (64) below the second filter screen (63).

3. The environment-friendly type grain automatic screening machine according to claim 2, characterized in that: filter equipment (6) are including sealing washer (67) and handle (68), the front end of storing box (64) is provided with the pull mouth, and drawer (65) insert through the pull mouth and get into and store box (64), the front side position of drawer (65) has cup jointed sealing washer (67) in pull mouth position department, the front end middle part of drawer (65) is fixed with handle (68).

4. The environment-friendly type grain automatic screening machine according to claim 1, characterized in that: screening main part (15) actuating mechanism includes auxiliary stand, rubber spring, shale shaker body, vibrating motor, and auxiliary stand installation rubber spring supports the shale shaker body, vibrating motor in screening main part (15) is provided with two sets ofly, when the exciting force direction of rotation that two sets of vibrating motor work produced is opposite.

5. The environment-friendly type grain automatic screening machine according to claim 1, characterized in that: the electronic pulse mechanism (4) comprises a supporting plate, an air bag and an electromagnetic pulse valve, wherein the electromagnetic pulse valve is installed on the air bag through a pipeline, a plurality of spray heads (17) are arranged, the spray heads (17) are connected with the electromagnetic pulse valve through pipelines, a plurality of filter bags (16) are arranged, and the filter bags (16) are installed on the supporting partition plate and are located on the same vertical central line with the spray heads (17).

6. The environment-friendly type grain automatic screening machine according to claim 1, characterized in that: the included angle between hopper sideboard (104) and slope bent plate (105) is sixty degrees, and slope bent plate (105) whole is U type shape, guide slide (106) whole is U type shape, and the upside part is provided with the joint breach.

7. The environment-friendly type grain automatic screening machine according to claim 1, characterized in that: the two fixing bolts (101) are arranged, the two fixing bolts (101) penetrate through the guide sliding plate (106) and the trash discharging opening (12) in a spiral mode, the guide sliding plate (106) is fixed to the trash discharging opening (12), the two adjusting bolts (102) are arranged, the two adjusting bolts (102) penetrate through the two adjusting grooves (103) in a spiral mode and are connected with the guide sliding plate (106), the hopper baffle plate (104) is installed on the guide sliding plate (106), and the guide sliding plate (106) is installed on the trash discharging opening (12) and is connected with the collecting box (11) in a thirty-degree inclined mode.

8. The environment-friendly type grain automatic screening machine according to claim 2, characterized in that: the first filter screen (61) comprises a frame and a filter screen, small filter holes are uniformly formed in the left end and the right end of the filter screen in a penetrating mode, the static cloth bag (62) is made of polyester cloth, the static cloth bag (62) is in contact with an external static device, and static electricity is generated on the surface.

9. The environment-friendly type grain automatic screening machine according to claim 2, characterized in that: the structure of the second filter screen (63) is the same as that of the first filter screen (61), and the filter pores uniformly penetrating through the left end and the right end of the filter screen are larger than those of the first filter screen (61).

10. The environment-friendly type grain automatic screening machine according to claim 3, characterized in that: the front end of drawer (65) is fixed with the limiting plate, and sealing washer (67) cup joint on drawer (65) and the limiting plate contact, when drawer (65) inserted storage box (64) through the pull mouth, sealing washer (67) and the pull mouth contact laminating of installation.