High-efficiency grain vibration cleaning screen

Abstract

The application relates to the technical field of grain cleaning, and discloses a high-efficiency grain vibration cleaning screen, which comprises a vehicle-mounted platform and a grain screening device. The grain screening device comprises a grain screening shell, a first screen and a second screen are fixedly arranged in the grain screening shell, the first screen is arranged above the second screen, a first adjusting screen and a second adjusting screen are movably arranged below the first screen and the second screen respectively, the lower side of the first adjusting screen is movably abutted against the lower side of the first screen, and a plurality of first screen holes are formed in the first screen. The first adjusting screen and the second adjusting screen can solve the problem that the traditional pulse vibration screen cannot screen different types of grains, so more types of equipment are needed, which causes resource waste. The circular brush, the air cylinder, the connecting tank and the air pipe can solve the problem that the traditional pulse vibration screen cannot completely remove impurities on the filter bag of the dust removal device, which causes low dust removal effect.

Description

Technical Field

[0001] The invention relates to the technical field of grain cleaning, in particular to a high-efficiency grain vibration cleaning screen. Background Art

[0002] my country is a big agricultural country with a wide variety of agricultural products, such as beans, grains, cereals, rapeseed, etc. In the process of agricultural product processing, agricultural products need to undergo a series of processing, and impurities such as soil, sand, gravel or straw of various sizes in the grain need to be cleaned to improve the quality of the grain. This includes screening and dust removal of agricultural products, which has produced a high-efficiency grain vibration cleaning screen.

[0003] The existing grain vibration cleaning screen has certain disadvantages when in use. First, the traditional pulse vibration screen cannot screen different types of grains, so more types of equipment are required, which will cause a waste of resources. Secondly, the traditional pulse vibration screen is difficult to completely remove impurities on the filter bag on the dust removal device, which will result in a low dust removal effect. Then, the buffering and shock-absorbing components used in the traditional pulse vibration screen are made of rubber or the wrong installation method is selected, which will reduce the buffering and shock-absorbing effect and cause energy waste. Finally, the grain separating plate used in the grain separating device of the traditional pulse vibration screen adopts a triangular structure, which will cause the problem of excessive separation of grain. For this reason, an efficient grain vibration cleaning screen is proposed. Summary of the Invention

[0004] The problem that the present invention needs to solve is that the traditional pulse vibrating screen cannot screen different types of grains, so more types of equipment are needed, which will cause a waste of resources. The traditional pulse vibrating screen is difficult to completely remove impurities on the filter bag on the dust removal device, which will cause a low dust removal effect. The buffering and shock-absorbing components used in the traditional pulse vibrating screen are rubber or the wrong installation method is selected, which will reduce the buffering and shock-absorbing effect and cause energy waste. The grain separating device of the traditional pulse vibrating screen uses a triangular structure of the grain separating plate, which will cause the problem of excessive grain separation.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A high-efficiency grain vibration cleaning screen comprises a vehicle-mounted platform and a grain screening device, wherein the grain screening device comprises a grain screening housing, wherein a first screen and a second screen are fixedly installed inside the grain screening housing, wherein the first screen is arranged above the second screen, and a first adjustment net and a second adjustment net are movably arranged below the first screen and the second screen, respectively, wherein the lower side of the first adjustment net movably abuts against the lower side of the first screen, wherein a plurality of first sieve holes are provided on the first adjustment net, and a plurality of second sieve holes are provided on the upper and lower sides of the plurality of first sieve holes and the plurality of second sieve holes. The positions correspond one to one, the second adjusting net is movably abutted against the lower side of the second screen, a number of third screen holes are opened on the second adjusting net, a number of fourth screen holes are opened on the second adjusting net, and the upper and lower positions of the third screen holes and the fourth screen holes correspond one to one, the inner walls on both sides of the interior of the grain screening shell are fixedly installed with first supporting angle irons, and the two first supporting angle irons are movably abutted against the lower side of the first adjusting net, the inner walls on both sides of the interior of the grain screening shell are fixedly installed with second supporting angle irons, and the two second supporting angle irons are movably abutted against the lower side of the second adjusting net.

[0007] Furthermore, vibration motors are fixedly installed in the middle of both sides of the grain screening shell, an operation panel is fixedly installed on the vehicle-mounted platform, the operation panel is electrically connected to the external power supply, the two vibration motors are electrically connected to the operation panel, and an escalator is fixedly installed on one side of the vehicle-mounted platform.

[0008] Furthermore, an operating box is fixedly installed on one side of the grain screening shell, and a first mounting plate is fixed on one side of the operating box, a first mounting shaft is movably inserted into the first mounting plate, one end of the first mounting shaft is fixedly inserted with a first gear, a first tooth plate is fixedly installed on one side of the first adjusting net, the first gear is meshed with the first tooth plate, the other end of the first mounting shaft is fixedly inserted with a first shift rod, a first positioning bolt is movably inserted on the first shift rod, the first shift rod is threadedly connected to the first positioning bolt, six first positioning holes are opened on the first mounting plate, one end of the first positioning bolt is movably inserted in one of the six first positioning holes, and a first baffle is fixedly installed on the position of the first screen corresponding to the operating box.

[0009] Furthermore, a second mounting plate is fixed to one side of the operating box, a second mounting shaft is movably inserted on the second mounting plate, one end of the second mounting shaft is fixedly inserted with a second gear, a second tooth plate is fixedly installed on one side of the second adjusting net, the second gear is meshed with the second tooth plate, the other end of the second mounting shaft is fixedly inserted with a second shift rod, a second positioning bolt is movably inserted on the second shift rod, the second shift rod is threadedly connected to the second positioning bolt, six second positioning holes are opened on the second mounting plate, one end of the second positioning bolt is movably inserted in one of the six second positioning holes, a second baffle is fixedly installed on the position of the second screen corresponding to the operating box, and the operating box is hinged with an operating cover by a hinge.

[0010] Furthermore, a grain inlet is provided on the upper side of the grain screening shell near the edge, a first row of impurity outlets are fixedly installed on both sides of the grain screening shell, and the installation positions of the two first row of impurity outlets are close to the upper side of the first screen, and two second row of impurity outlets are fixedly installed on the lower side of the grain screening shell, and funnels are fixedly installed on both sides of the vehicle-mounted platform, and the two funnels are respectively arranged directly below the two first row of impurity outlets and the two first screens, and a grain outlet is fixedly installed on one side of the grain screening shell, and the installation position of the grain outlet is close to the upper side of the second regulating net.

[0011] Furthermore, four support plates are fixedly installed on the vehicle-mounted platform, and two support frames are fixedly installed on both sides of the grain screening shell. The four support frames correspond to the upper and lower positions of the four support plates one by one. The four support plates are movably connected with connecting bolts, and the four connecting bolts are movably inserted through the support frames. Springs are provided between the four support frames and the four support plates, and the two ends of the four springs are movably connected to the four support frames and the four support plates respectively.

[0012] Furthermore, a dust removal device is fixedly installed on the vehicle-mounted platform, and the dust removal device includes a dust removal box, a partition is fixedly installed inside the dust removal box, nine circular through holes are opened on the partition, and brackets are fixedly installed on the lower side of the partition corresponding to the positions of the nine circular through holes, and circular brushes are movably connected on the nine brackets, and a connecting frame is provided between the nine circular brushes, and the nine circular brushes are fixedly connected through the connecting frame. Two cylinders are fixedly installed on the upper side of the partition, and push rods are movably inserted on the two cylinders. The two push rods are movably inserted through the partition respectively, and one end of the two push rods is fixedly connected to the connecting frame respectively, and both ends of the two cylinders are connected to the second pneumatic solenoid valve through a hose, and the second pneumatic electric solenoid valve is connected to the air pump through a hose, and the second pneumatic solenoid valve is electrically connected to the operation panel.

[0013] Furthermore, an air duct is fixedly installed on one side of the dust removal box, and the air duct is communicated with the interior of the dust removal box. One end of the air duct is arranged on the upper side of the grain outlet, and two mounting brackets are fixedly installed on one side of the dust removal box. Electric fans are fixedly installed on the upper sides of the two mounting brackets, and the two electric fans are provided with an air inlet end and an air outlet end. The air inlet ends of the two electric fans are fixedly connected to the dust removal box, and an electric auger is fixedly installed on the lower side of the dust removal box. The two electric fans and the electric auger are electrically connected to the operation panel.

[0014] Furthermore, the three sides and the upper side of the dust removal box are hinged with inspection doors by hinges, and a connecting tank is fixedly installed on one side of the dust removal box, and nine air pipes are fixedly installed on the connecting tank. The nine air pipes are fixedly inserted into the interior of the dust removal box, and one end of the nine air pipes extends to directly above the nine circular through holes respectively. An air pump is fixedly installed on the vehicle-mounted platform, and the connecting tank is connected to a first pneumatic solenoid valve through a hose, and the first pneumatic solenoid valve is connected to the air pump through a hose, and the first pneumatic solenoid valve is electrically connected to the operation panel.

[0015] Furthermore, a grain distribution device is fixedly installed on the vehicle-mounted platform, and the grain distribution device includes a grain distribution body. The grain distribution body is hollow, and the grain inlet is directly below the grain distribution body. A trapezoidal grain distribution plate is fixedly installed inside the grain distribution body, and the trapezoidal grain distribution plate has a certain inclination angle.

[0016] Furthermore, an electric conveyor belt is fixedly installed on the vehicle-mounted platform, the electric conveyor belt is arranged directly below the dust removal device, one end of the electric conveyor belt is arranged directly below the grain outlet, and the electric conveyor belt is electrically connected to the operation panel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can solve the problem that the traditional pulse vibration screen cannot screen different types of grains by setting the first adjustment net and the second adjustment net, so more types of equipment are needed, which will cause waste of resources. When in use, the user can move the first adjustment net through operation. The movement of the first adjustment net will cause a number of first sieve holes and a number of second sieve holes to be misaligned, and then the first adjustment net can block a part of the material that can pass through the first sieve hole. As the user moves the first tooth plate, the part of the first adjustment net that can cover the first sieve hole will increase, and the size of the material that can be blocked will gradually become smaller until the sieve hole can pass the selected grain, and Impurities larger than the selected grain cannot pass through, and then the user can move the second adjusting net through operation. The movement of the second adjusting net will cause several third sieve holes and several fourth sieve holes to be misaligned, and then the second adjusting net can block a part of the material that can pass through the third sieve holes. As the user moves the second tooth plate, the part of the third sieve holes that can be covered by the second adjusting net will increase, and the size of the material that can be blocked will gradually become smaller, until the sieve holes can pass impurities smaller than the selected grain and cannot pass the selected grain. After such operation, the device can screen different types of grain, thereby reducing the user's investment in grain equipment and reducing resource waste.

[0019] 2. The circular brush, cylinder, connecting tank and air pipe can solve the problem that the traditional pulse vibration screen is difficult to completely remove impurities on the filter bag of the dust removal device, which will cause low dust removal effect. When in use, the user can control the second pneumatic solenoid valve through the control operation panel, so that the high-pressure gas in the air pump enters one end of the two cylinders through the hose, so that the two push rods extend out of the two cylinders, and the two cylinders can drive the connecting frame to move, and the connecting frame can drive the nine circular brushes to move. The nine circular brushes can respectively remove the dust or impurities on the filter bag more easily. Dust or impurities that are easily floated will fall to the bottom of the dust removal box. In addition, the user can control the first pneumatic solenoid valve through the control operation panel, so that the high-pressure gas in the air pump enters the connecting tank through the hose, and then the connecting tank distributes the high-pressure gas to nine air pipes. Since one end of the nine air pipes is respectively arranged on the upper side of the nine circular through holes, the high-pressure gas ejected through the nine air pipes enters the nine brackets. The high-pressure gas can wash away the dust or impurities that are easily floated on the nine filter bags. After the double cleaning operation, the impurities on the filter bags can be cleaned more thoroughly.

[0020] 3. Through the setting of support frame, support plate, connecting bolts and springs, the buffering and shock-absorbing components used in traditional pulse vibrating screens are rubber or the wrong installation method is selected, which will reduce the buffering and shock-absorbing effect and cause energy waste. The natural frequency of rubber springs used in traditional pulse vibrating screens can hardly be below 5Hz, and they are not resistant to high temperature and oil pollution, and are more prone to corrosion and weathering. Most grain production work is outdoors, and there are many unfavorable factors for rubber, which will affect the stable operation of the equipment. Secondly, the traditional pulse vibrating screen uses two springs to stabilize the connection between the support frame and the support plate in the horizontal and vertical directions. Adding springs in two directions will affect the vibration effect of the screening device, and then affect the screening efficiency and production. This equipment can ensure the connection stability through the setting of connecting bolts. By replacing the rubber spring with the setting spring, the replacement cost of the spring can be reduced, and the buffering and shock-absorbing effect can also be guaranteed.

[0021] 4. The trapezoidal grain dividing plate is set. The grain dividing plate used in the grain dividing device of the traditional pulse vibrating screen adopts a triangular structure, which will cause the problem of excessive grain separation. When in use, the grain will fall onto the trapezoidal grain dividing plate in the grain dividing device. The trapezoidal structure design of the trapezoidal grain dividing plate makes the middle of the trapezoidal grain dividing plate relatively flat. In addition, since the trapezoidal grain dividing plate has a certain inclination angle, the grain will first accumulate in the middle of the trapezoidal grain dividing plate and slide toward the inside of the grain dividing device. As the grain accumulates more, the trapezoidal structure design of the trapezoidal grain dividing plate will cause the grain to slide quickly from the middle to both sides, and then accumulate and slide toward the inside of the grain dividing device. This can make the grain quickly dispersed and convenient for screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 The figure is a schematic diagram of the overall structure of a high-efficiency grain vibration cleaning screen of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the other side of a high-efficiency grain vibration cleaning screen of the present invention.

[0025] Figure 3 The diagram is a schematic diagram of a dust removal device for a high-efficiency grain vibrating cleaning screen according to the present invention.

[0026] Figure 4 The figure is a cross-sectional view of a dust removal device for a high-efficiency grain vibrating cleaning screen according to the present invention.

[0027] Figure 5 The figure is a schematic diagram of a grain screening device of a high-efficiency grain vibration cleaning screen of the present invention.

[0028] Figure 6The figure is a cross-sectional view of a grain screening device of a high-efficiency grain vibration cleaning screen of the present invention.

[0029] Figure 7 The figure is a schematic diagram of a grain separating device of a high-efficiency grain vibrating cleaning screen of the present invention.

[0030] Figure 8 This invention is a high-efficiency grain vibration cleaning screen Figure 2 Enlarged view of part A in .

[0031] Figure 9 This invention is a high-efficiency grain vibration cleaning screen Figure 4 Enlarged view of part B in .

[0032] Figure 10 This invention is a high-efficiency grain vibration cleaning screen Figure 5 Enlarged view of part C in .

[0033] Figure 11 This invention is a high-efficiency grain vibration cleaning screen Figure 5 Enlarged view of part D in .

[0034] In the figure: 1. Vehicle-mounted platform; 2. Grain screening device; 3. Grain dispensing device; 4. Dust removal device; 5. Air duct; 6. Electric fan; 7. Electric auger; 9. Electric conveyor belt; 10. Grain screening housing; 11. Vibrating motor; 12. Grain inlet; 13. Grain outlet; 14. First row of miscellaneous openings; 15. Second row of miscellaneous openings; 16. First screen; 17. Second screen; 18. First adjustment net; 19. Second adjustment net; 20. First support angle iron; 21. Second support angle iron; 22. First mounting plate; 23. Second mounting plate; 24. First mounting shaft; 25. Second mounting shaft; 26. First gear; 27. Second gear; 28. First tooth plate; 29. ​​Second tooth plate; 30 , first positioning hole; 31, second positioning hole; 32, first positioning bolt; 33, second positioning bolt; 34, first baffle; 35, second baffle; 36, operation box; 37, operation cover; 38, support frame; 39, support plate; 40, connecting bolt; 41, spring; 42, dust removal box; 43, partition; 44, circular through hole; 45, bracket; 46, circular brush; 47, connecting frame; 48, cylinder; 49, connecting tank; 50, air pipe; 51, inspection door; 52, grain distribution body; 53, trapezoidal grain distribution plate; 54, operation panel; 55, funnel; 56, escalator; 57, air pump; 58, mounting frame; 59, first lever; 60, second lever. DETAILED DESCRIPTION

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] See also Figure 1-11 As shown, the purpose of the present invention can be achieved by the following technical solutions:

[0037] A high-efficiency grain vibration cleaning screen includes a vehicle-mounted platform 1 and a grain screening device 2. The grain screening device 2 includes a grain screening housing 10. A first screen 16 and a second screen 17 are fixedly installed inside the grain screening housing 10. The first screen 16 is arranged above the second screen 17. A first adjustment net 18 and a second adjustment net 19 are movably arranged below the first screen 16 and the second screen 17. The lower side of the first adjustment net 18 movably abuts against the lower side of the first screen 16. A plurality of first sieve holes are opened on the first sieve 16, and a plurality of second sieve holes are opened on the first adjustment net 18. The upper and lower positions correspond one to one, the second adjustment net 19 is movably abutted against the lower side of the second screen 17, the second screen 17 is provided with a plurality of third screen holes, and the second adjustment net 19 is provided with a plurality of fourth screen holes. The upper and lower positions of the plurality of third screen holes and the plurality of fourth screen holes correspond one to one, and the inner walls on both sides of the interior of the grain screening shell 10 are fixedly installed with first supporting angle irons 20, and the two first supporting angle irons 20 are movably abutted against the lower side of the first adjustment net 18, and the inner walls on both sides of the interior of the grain screening shell 10 are fixedly installed with second supporting angle irons 21, and the two second supporting angle irons 21 are movably abutted against the lower side of the second adjustment net 19, as shown in FIG. Figure 10 and Figure 11 As shown, the first support angle iron 20 and the second support angle iron 21 are provided to support the first adjustment net 18 and the second adjustment net 19 respectively.

[0038] Vibration motors 11 are fixedly installed in the middle of both sides of the grain screening shell 10, an operation panel 54 is fixedly installed on the vehicle-mounted platform 1, the operation panel 54 is electrically connected to the external power supply, and the two vibration motors 11 are electrically connected to the operation panel 54. An escalator 56 is fixedly installed on one side of the vehicle-mounted platform 1. The vibration motor 11 is an excitation source that combines a power source and a vibration source into one. The vibration motor 11 has a group of adjustable eccentric blocks installed at both ends of the rotor shaft, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric blocks is used to obtain the excitation force.

[0039] An operation box 36 is fixedly installed on one side of the grain screening shell 10, and a first mounting plate 22 is fixed on one side of the operation box 36. A first mounting shaft 24 is movably inserted on the first mounting plate 22, and a first gear 26 is fixedly inserted at one end of the first mounting shaft 24. A first tooth plate 28 is fixedly installed on one side of the first adjusting net 18, and the first gear 26 is meshed with the first tooth plate 28. A first shift rod 59 is fixedly inserted on the other end of the first mounting shaft 24, and a first positioning bolt 32 is movably inserted on the first shift rod 59. The first shift rod 59 is threadedly connected to the first positioning bolt 32. Six first positioning holes 30 are provided on the first mounting plate 22, and one end of the first positioning bolt 32 is movably inserted into one of the six first positioning holes 30. A first baffle 34 is fixedly installed on the position of the first screen 16 corresponding to the operation box 36. The first baffle 34 can prevent grain or impurities from entering the operation box 36.

[0040] A second mounting plate 23 is fixed to one side of the operation box 36, and a second mounting shaft 25 is movably inserted on the second mounting plate 23, and one end of the second mounting shaft 25 is fixedly inserted with a second gear 27, and a second tooth plate 29 is fixedly installed on one side of the second adjusting net 19, and the second gear 27 is meshed with the second tooth plate 29. The other end of the second mounting shaft 25 is fixedly inserted with a second shift rod 60, and a second positioning bolt 33 is movably inserted on the second shift rod 60. The second shift rod 60 is threadedly connected to the second positioning bolt 33, and six second positioning holes 31 are provided on the second mounting plate 23. One end of the second positioning bolt 33 is movably inserted into one of the six second positioning holes 31. A second baffle 35 is fixedly installed on the position of the second screen 17 corresponding to the operation box 36, and the operation box 36 is hinged with an operation cover 37 by a hinge. The second baffle 35 can prevent food or impurities from entering the operation box 36.

[0041] A grain inlet 12 is provided on the upper side of the grain screening shell 10 near the edge, and a first row of impurity openings 14 are fixedly installed on both sides of the grain screening shell 10, and the installation positions of the two first row of impurity openings 14 are close to the upper side of the first screen 16. Two second row of impurity openings 15 are fixedly installed on the lower side of the grain screening shell 10, and funnels 55 are fixedly installed on both sides of the vehicle-mounted platform 1, and the two funnels 55 are respectively arranged directly below the two first row of impurity openings 14 and the two first screens 16. A grain outlet 13 is fixedly installed on one side of the grain screening shell 10, and the installation position of the grain outlet 13 is close to the upper side of the second adjustment net 19.

[0042] Four support plates 39 are fixedly installed on the vehicle-mounted platform 1, and two support frames 38 are fixedly installed on both sides of the grain screening shell 10. The four support frames 38 correspond to the upper and lower positions of the four support plates 39 one by one. The four support plates 39 are all movably connected with connecting bolts 40, and the four connecting bolts 40 are all movably inserted through the support frames 38. Springs 41 are provided between the four support frames 38 and the four support plates 39, and the two ends of the four springs 41 are movably connected to the four support frames 38 and the four support plates 39 respectively.

[0043] A dust removal device 4 is fixedly installed on the vehicle-mounted platform 1. The dust removal device 4 includes a dust removal box 42. A partition 43 is fixedly installed inside the dust removal box 42. Nine circular through holes 44 are opened on the partition 43. Brackets 45 are fixedly installed at the positions corresponding to the nine circular through holes 44 on the lower side of the partition 43. Circular brushes 46 are movably sleeved on the nine brackets 45. A connecting frame 47 is provided between the nine circular brushes 46. The nine circular brushes 46 are fixedly connected through the connecting frame 47. Two cylinders 48 are fixedly installed on the upper side of the partition 43. Push rods are movably inserted on the two cylinders 48. The two push rods are movably inserted through the partition 43, and one end of the two push rods is fixed to the connecting frame 47. Fixed connection, both ends of the two cylinders 48 are connected to the second pneumatic solenoid valve through a hose, the second pneumatic electric solenoid valve is connected to the air pump 57 through a hose, the second pneumatic solenoid valve is electrically connected to the operation panel 54, cylinder 48, pneumatic transmission, the pressure energy of compressed gas is converted into mechanical energy of pneumatic actuators, pneumatic solenoid valves are industrial equipment controlled by electromagnetics, are basic automation components used to control fluids, belong to actuators, and pneumatic solenoid valves are one of them, which blocks or leaks different air holes by controlling the movement of the valve body, and the air holes are normally open, and the high-pressure gas will enter different pipes, and then the pressure of the high-pressure gas of the pneumatic solenoid valve will push the piston of the cylinder 48.

[0044] An air duct 5 is fixedly installed on one side of the dust removal box 42, and the air duct 5 is communicated with the interior of the dust removal box 42. One end of the air duct 5 is arranged on the upper side of the grain outlet 13. Two mounting brackets 58 are fixedly installed on one side of the dust removal box 42. Electric fans 6 are fixedly installed on the upper sides of the two mounting brackets 58. The two electric fans 6 are both provided with an air inlet end and an air outlet end. The air inlet ends of the two electric fans 6 are fixedly connected to the dust removal box 42. An electric auger 7 is fixedly installed on the lower side of the dust removal box 42. The two electric fans 6 and the electric auger 7 are electrically connected to the operation panel 54.

[0045] The three sides and the upper side of the dust removal box 42 are hinged with inspection doors 51 by hinges. A connecting tank 49 is fixedly installed on one side of the dust removal box 42, and nine air pipes 50 are fixedly installed on the connecting tank 49. The nine air pipes 50 are all fixedly inserted into the interior of the dust removal box 42, and one end of the nine air pipes 50 extends to the top of the nine circular through holes 44 respectively. An air pump 57 is fixedly installed on the vehicle-mounted platform 1, and the connecting tank 49 is connected to the first pneumatic solenoid valve through a hose. The first pneumatic solenoid valve is connected to the air pump 57 through a hose, and the first pneumatic solenoid valve is electrically connected to the operation panel 54.

[0046] A grain distribution device 3 is fixedly installed on the vehicle-mounted platform 1. The grain distribution device 3 includes a grain distribution body 52. ​​The grain distribution body 52 is hollow, and the grain inlet 12 is directly below the grain distribution body 52. ​​A trapezoidal grain distribution plate 53 is fixedly installed inside the grain distribution body 52. ​​The trapezoidal grain distribution plate 53 has a certain inclination angle.

[0047] An electric conveyor belt 9 is fixedly installed on the vehicle-mounted platform 1 . The electric conveyor belt 9 is arranged directly below the dust removal device 4 . One end of the electric conveyor belt 9 is arranged directly below the grain outlet 13 . The electric conveyor belt 9 is electrically connected to the operation panel 54 .

[0048] It should be noted that the present invention is a high-efficiency grain vibrating cleaning screen. Before use, first, place the device on a horizontal ground. The user can move the device to a designated location via the vehicle-mounted platform 1 and align one end of the transmission belt for delivering grain with the grain distributing device 3. Then, the corresponding sieve holes need to be adjusted according to the size of the impurities to be screened and the type of grain. In the first step, the user needs to respectively screw the first positioning bolt 32 and the second positioning bolt 33 so that the first positioning bolt 32 and the second positioning bolt 33 are respectively disconnected from the first positioning hole 30 and the second positioning hole 31. Then, the first tooth plate 28 can be moved, and the first tooth plate 28 drives the first tooth plate 28 to move the first tooth plate 28. The first mounting shaft 24 and the first gear 26 fixedly connected to the first mounting shaft 24 rotate. Since the first gear 26 is meshed with the first lever 59, the rotation of the first gear 26 can drive the first lever 59 to move. Then the first lever 59 drives the first adjustment net 18 fixedly connected to the first lever 59 to move. The movement of the first adjustment net 18 will cause a plurality of first sieve holes and a plurality of second sieve holes to be misaligned, and then the first adjustment net 18 can block a portion of the material that can pass through the first sieve holes. As the user moves the first tooth plate 28, the portion of the first adjustment net 18 that can cover the first sieve holes will increase, and the material that can be blocked will increase. The size of the grain will gradually become smaller until the sieve hole can pass the selected grain and cannot pass impurities larger than the selected grain. The user can stop the plate movement and screw the first positioning bolt 32 so that the first positioning bolt 32 is inserted into the adjacent first positioning hole 30. Then the second tooth plate 29 can be moved, and the second tooth plate 29 drives the second mounting shaft 25 and the second gear 27 fixedly connected to the second mounting shaft 25 to rotate. Since the second gear 27 is meshed with the second lever 60, the rotation of the first gear 26 can drive the second lever 60 to move, and then the second lever 60 can drive the second adjusting lever fixedly connected to the second lever 60. The net 19 moves, and the movement of the second adjustment net 19 will cause several third sieve holes and several fourth sieve holes to be misaligned, so that the second adjustment net 19 can block a portion of the material that can pass through the third sieve holes. As the user moves the second tooth plate 29, the portion of the third sieve holes that can be blocked by the second adjustment net 19 will increase, and the size of the material that can be blocked will gradually decrease, until the sieve holes can pass impurities smaller than the selected grain and cannot pass the selected grain. The user can stop moving the plate and tighten the second positioning bolt 33 so that the second positioning bolt 33 is inserted into the adjacent second positioning hole 31. Then the user can close the operation cover 37.

[0049] Next, the user needs to open the inspection door 51 of the dust removal device 4 and put the filter bags on the nine brackets 45 one by one, while passing the filter bags through the inside of the circular brush 46. Then, the user needs to fix the filter bags one by one and close the opened inspection door 51.

[0050] During use, the user needs to power on the electric fan 6, the electric auger 7, the electric conveyor belt 9, the vibration motor 11 and the air pump 57 through the control operation panel 54, and then send the grain into the grain distributing device 3 through the grain conveyor belt. First, the grain will fall onto the trapezoidal grain distributing plate 53 in the grain distributing device 3. The trapezoidal structure design of the trapezoidal grain distributing plate 53 makes the middle of the trapezoidal grain distributing plate 53 relatively flat. In addition, since the trapezoidal grain distributing plate 53 has a certain inclination angle, the grain will first accumulate in the middle of the trapezoidal grain distributing plate 53 and slide into the inside of the grain distributing device 3. As the grain accumulates more, the trapezoidal structure design of the trapezoidal grain distributing plate 53 causes the grain to slide quickly from the middle to both sides, and then accumulate and slide into the inside of the grain distributing device 3, so that the grain can be quickly dispersed and conveniently screened.

[0051] Next, the grain falls out of the grain distributing device 3, and then enters the interior of the grain screening housing 10 through the provided grain inlet 12. The grain entering the grain screening housing 10 will fall on the upper side of the first screen 16. After the other two vibration motors 11 are energized, the two vibration motors 11 drive the grain screening device 2 to vibrate as a whole. The four springs 41 provided can prevent the grain screening housing 10 and the vehicle-mounted platform 1 from vibrating together. In addition, it is convenient for the two vibration motors 11 to drive the grain screening device 2 to vibrate regularly. Then the grain that falls on the first screen 16 will vibrate together, and will be scattered on the upper side of the first screen 16 and move to one side of the first screen 16. At the same time, the grain will pass The impurities screened by the first and second sieve holes fall onto the upper side of the second sieve 17. The impurities larger than the selected grain continue to move toward the side of the first sieve 16 and are finally discharged from the grain screening housing 10 through the two first impurity discharge ports 14. The grain that falls onto the second sieve 17 moves toward the side of the second sieve 17 and is finally discharged from the grain screening housing 10 through the grain discharge port 13. At the same time, the small impurities in the grain pass through the third and fourth sieve holes and fall to the bottom of the grain screening housing 10. They finally fall into the two second impurity discharge ports 15 and are discharged from the grain screening housing 10 through the two second impurity discharge ports 15, thus completing the grain screening.

[0052] Next, the screened grains fall onto the electric conveyor belt 9 through the grain outlet 13. The energized electric conveyor belt 9 can drive the screened grains to be discharged from the equipment. In addition, when the screened grains fall from the grain outlet 13, the two energized electric fans 6 will start to extract the internal air of the dust removal box 42 to the outside. At the same time, since the dust removal box 42 is sealed, the two electric fans 6 can draw the outside air into the interior of the dust removal box 42 through the air duct 5. Since one end of the air duct 5 is arranged on the upper side of the grain outlet 13, dust or impurities with a relatively easy floating mass will be raised in the process of the screened grains falling. At the same time, the dust or impurities with a relatively easy floating mass will be sucked into the interior of the dust removal box 42 through the air duct 5. After the above process, the screened grains can be made cleaner to increase the screening effect.

[0053] Next, since the partition 43 separates the interior of the dust removal box 42, the interior of the dust removal box 42 is divided into two parts, the dust or impurities that are easily floated will first enter the lower part of the dust removal box 42, and after being sucked by the two electric fans 6, the lower part of the dust removal box 42 will pass through the nine filter bags and enter the upper part of the dust removal box 42 through the nine circular through holes 44, and then be sucked to the outside by the two electric fans 6, while the dust or impurities that are easily floated will adhere to the nine filter bags, and as time goes by, more dust or impurities that are easily floated will adhere to them. At this time, these impurities need to be removed, and the user needs to first disconnect the power of the two electric fans 6 through the control operation panel 54. The user can control the operation panel 54 to give the second pneumatic solenoid valve, so that the high-pressure gas in the air pump 57 enters one end of the two cylinders 48 through the hose, so that the two push rods extend out of the two cylinders 48, and the two cylinders 48 can drive the connecting frame 47 to move, and the connecting frame 47 can drive the nine circular brushes 46 to move. The nine circular brushes 46 can respectively lift the dust or impurities on the filter bags. After the dust or impurities fall, they will fall to the bottom of the dust removal box 42 and then be taken out of the dust removal box 42 by the electric auger 7. In addition, the user can control the operation panel 54 to give the first pneumatic solenoid valve, so that the high-pressure gas in the air pump 57 enters the connecting tank 49 through the hose, and then the connecting tank 49 distributes the high-pressure gas to the nine air pipes 50. Since one end of the nine air pipes 50 is respectively arranged on the upper side of the nine circular through holes 44, the high-pressure gas ejected through the nine air pipes 50 enters the nine brackets 45, and the high-pressure gas can flush away the dust or impurities attached to the nine filter bags. After completing the cleaning of the dust or impurities, the user can continue to use the dust removal device 4 according to the above operation.

[0054] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency grain vibrating cleaning screen, comprising a vehicle-mounted platform (1) and a grain screening device (2), characterized in that: The grain screening device (2) includes a grain screening housing (10), wherein a first screen (16) and a second screen (17) are fixedly installed inside the grain screening housing (10), the first screen (16) is arranged above the second screen (17), and a first adjustment net (18) and a second adjustment net (19) are movably arranged below the first screen (16) and the second screen (17), respectively, and the lower side of the first adjustment net (18) movably abuts against the lower side of the first screen (16), the first screen (16) is provided with a plurality of first screen holes, and the first adjustment net (18) is provided with a plurality of second screen holes, and the upper and lower positions of the plurality of first screen holes and the plurality of second screen holes correspond to each other. The second adjustment net (19) is movably abutted against the lower side of the second screen (17), the second screen (17) is provided with a plurality of third screen holes, the second adjustment net (19) is provided with a plurality of fourth screen holes, and the upper and lower positions of the plurality of third screen holes and the plurality of fourth screen holes correspond to each other. The inner walls on both sides of the grain screening housing (10) are fixedly mounted with first support angle irons (20), and the two first support angle irons (20) are movably abutted against the lower side of the first adjustment net (18). The inner walls on both sides of the grain screening housing (10) are fixedly mounted with second support angle irons (21), and the two second support angle irons (21) are movably abutted against the lower side of the second adjustment net (19); The vibration motor (11) is provided with a set of adjustable eccentric blocks at each end of the rotor shaft; A dust removal device (4) is fixedly installed on the vehicle-mounted platform (1), and the dust removal device (4) includes a dust removal box (42). A partition (43) is fixedly installed inside the dust removal box (42), and nine circular through holes (44) are opened on the partition (43). Brackets (45) are fixedly installed at the positions corresponding to the nine circular through holes (44) on the lower side of the partition (43). Circular brushes (46) are movably sleeved on the nine brackets (45), and connecting frames (47) are provided between the nine circular brushes (46). The circular brush (46) is fixedly connected via a connecting frame (47), and two cylinders (48) are fixedly mounted on the upper side of the partition (43), and push rods are movably connected to the two cylinders (48), and the two push rods are movably inserted through the partition (43), and one end of the two push rods is fixedly connected to the connecting frame (47), and both ends of the two cylinders (48) are connected to a second pneumatic solenoid valve via a hose, and the second pneumatic solenoid valve is connected to the air pump (57) via a hose, and the second pneumatic solenoid valve is electrically connected to the operation panel (54).

2. The high-efficiency grain vibrating cleaning screen according to claim 1, characterized in that: Vibration motors (11) are fixedly mounted at the middle positions of both sides of the grain screening housing (10), an operation panel (54) is fixedly mounted on the vehicle-mounted platform (1), the operation panel (54) is electrically connected to an external power supply, and both vibration motors (11) are electrically connected to the operation panel (54), and an escalator (56) is fixedly mounted on one side of the vehicle-mounted platform (1).

3. The high-efficiency grain vibrating cleaning screen according to claim 2, characterized in that: An operation box (36) is fixedly installed on one side of the grain screening housing (10), and a first mounting plate (22) is fixed on one side of the operation box (36). A first mounting shaft (24) is movably inserted on the first mounting plate (22), and a first gear (26) is fixedly inserted on one end of the first mounting shaft (24). A first tooth plate (28) is fixedly installed on one side of the first adjustment net (18), and the first gear (26) is meshedly connected to the first gear plate (28). A first shifting rod (59) is fixedly inserted on the other end of the first mounting shaft (24), and a first positioning bolt (32) is movably inserted on the first shifting rod (59). The first shifting rod (59) is threadedly connected to the first positioning bolt (32). Six first positioning holes (30) are opened on the first mounting plate (22), and one end of the first positioning bolt (32) is movably inserted in one of the six first positioning holes (30). A first baffle (34) is fixedly installed on the first screen (16) at a position corresponding to the operation box (36).

4. The high-efficiency grain vibrating cleaning screen according to claim 3, characterized in that: A second mounting plate (23) is fixed to one side of the operation box (36), a second mounting shaft (25) is movably connected to the second mounting plate (23), a second gear (27) is fixedly connected to one end of the second mounting shaft (25), a second tooth plate (29) is fixedly installed to one side of the second adjustment net (19), the second gear (27) is meshedly connected to the second tooth plate (29), a second shifting rod (60) is fixedly connected to the other end of the second mounting shaft (25), a second positioning bolt (33) is movably connected to the second shifting rod (60), the second shifting rod (60) is threadedly connected to the second positioning bolt (33), six second positioning holes (31) are opened on the second mounting plate (23), one end of the second positioning bolt (33) is movably connected to one of the six second positioning holes (31), a second baffle (35) is fixedly installed on the second screen (17) at a position corresponding to the operation box (36), and the operation box (36) is hinged to the operation cover (37) through a hinge.

5. The high-efficiency grain vibrating cleaning screen according to claim 4, characterized in that: A grain inlet (12) is provided on the upper side of the grain screening housing (10) near the edge, and first impurity discharge ports (14) are fixedly installed on both sides of the grain screening housing (10), and the installation positions of the two first impurity discharge ports (14) are close to the upper side of the first screen (16). Two second impurity discharge ports (15) are fixedly installed on the lower side of the grain screening housing (10), and funnels (55) are fixedly installed on both sides of the vehicle-mounted platform (1), and the two funnels (55) are respectively arranged directly below the two first impurity discharge ports (14) and the two first screens (16). A grain outlet (13) is fixedly installed on one side of the grain screening housing (10), and the installation position of the grain outlet (13) is close to the upper side of the second regulating net (19).

6. The high-efficiency grain vibrating cleaning screen according to claim 5, characterized in that: Four support plates (39) are fixedly mounted on the vehicle-mounted platform (1), and two support frames (38) are fixedly mounted on both sides of the grain screening shell (10), and the upper and lower positions of the four support frames (38) and the four support plates (39) correspond one to one, and the four support plates (39) are all movably connected with connecting bolts (40), and the four connecting bolts (40) are all movably inserted through the support frames (38), and springs (41) are provided between the four support frames (38) and the four support plates (39), and the two ends of the four springs (41) are movably connected to the four support frames (38) and the four support plates (39).

7. The high-efficiency grain vibrating cleaning screen according to claim 6, characterized in that: An air duct (5) is fixedly installed on one side of the dust removal box (42), and the air duct (5) is communicated with the interior of the dust removal box (42). One end of the air duct (5) is arranged on the upper side of the grain outlet (13). Two mounting brackets (58) are fixedly installed on one side of the dust removal box (42), and electric fans (6) are fixedly installed on the upper sides of the two mounting brackets (58). The two electric fans (6) are provided with an air inlet end and an air outlet end. The air inlet ends of the two electric fans (6) are fixedly connected to the dust removal box (42). An electric auger (7) is fixedly installed on the lower side of the dust removal box (42), and the two electric fans (6) and the electric auger (7) are electrically connected to the operation panel (54).

8. The high-efficiency grain vibrating cleaning screen according to claim 7, characterized in that: The three sides and the upper side of the dust removal box (42) are hinged with inspection doors (51), and a connecting tank (49) is fixedly installed on one side of the dust removal box (42). Nine air pipes (50) are fixedly installed on the connecting tank (49). The nine air pipes (50) are fixedly inserted into the interior of the dust removal box (42), and one end of the nine air pipes (50) extends to the top of the nine circular through holes (44) respectively. An air pump (57) is fixedly installed on the vehicle-mounted platform (1). The connecting tank (49) is connected to a first pneumatic solenoid valve through a hose. The first pneumatic solenoid valve is connected to the air pump (57) through a hose, and the first pneumatic solenoid valve is electrically connected to the operation panel (54).

9. The high-efficiency grain vibrating cleaning screen according to claim 8, characterized in that: A grain distributing device (3) is fixedly mounted on the vehicle-mounted platform (1), and the grain distributing device (3) includes a grain distributing body (52), the grain distributing body (52) is hollow, and a grain inlet (12) is located directly below the grain distributing body (52), and a trapezoidal grain distributing plate (53) is fixedly mounted inside the grain distributing body (52), and the trapezoidal grain distributing plate (53) has a certain tilt angle; an electric conveyor belt (9) is fixedly mounted on the vehicle-mounted platform (1), the electric conveyor belt (9) is arranged directly below the dust removal device (4), and one end of the electric conveyor belt (9) is arranged directly below the grain outlet (13), and the electric conveyor belt (9) is electrically connected to the operation panel (54).

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