A Gravity Grading Device and Method for Wheat Particles

Abstract

This invention discloses a wheat grain specific gravity grading device and method, belonging to the technical field of specific gravity grading equipment. The key technical points include: a screening shell, disposed inside a fixed outer shell, the screening shell consisting of a first outer shell, a third outer shell, a second outer shell, and one or more fourth outer shells from top to bottom; a first screen fixedly installed on the inner surface of the first outer shell; a fixed inner shell fixedly installed inside the second outer shell, forming a falling channel between the inner surface of the second outer shell and the outer surface of the fixed inner shell; a blower assembly fixedly installed inside the fixed inner shell; a second screen fixedly installed on the inner surface of the fourth outer shell, with a first lifting part in the middle of the second screen and a second lifting part at the edge of the second screen; and a vibration assembly configured to enable the screening shell to move in both horizontal and vertical directions. This device has excellent performance.

Description

Technical Field

[0001] This invention relates to the field of gravity grading equipment technology, and more specifically, to a gravity grading device and method based on wheat grains. Background Technology

[0002] Wheat is a general term for plants of the wheat family. It is a monocotyledonous plant and a type of grass widely cultivated around the world. Wheat grains are one of the staple foods for humans. After being ground into flour, it can be used to make bread, steamed buns, biscuits, noodles and other foods. After fermentation, it can be used to make beer, alcohol, spirits or biofuel. Wheat is rich in starch, protein, fat, minerals, calcium, iron, thiamine, riboflavin, niacin, vitamin A and vitamin C. Because wheat is one of the staple foods for humans, it needs to be processed before it can be consumed.

[0003] Chinese patent publication number CN213316151U discloses a wheat seed specific gravity sorting device, including a supporting base plate, casters, support rods, chutes, sliders, a vibrating screen cylinder body, a handle, a motor base, a protective cover, heat dissipation holes, a vibrating motor, a feeding hopper, a conveying trough, buffer springs, shock-absorbing springs, a receiving tray, screen holes, a controller, and a discharge trough. The motor base is mounted on the vibrating screen cylinder body, the protective cover is mounted on the motor base, the heat dissipation holes are located on the protective cover, the vibrating motor is mounted on the motor base and located inside the protective cover, and the feeding hopper... The material conveying trough is located on the feeding hopper and on the inner wall of the vibrating screen cylinder body. One end of the buffer spring is located on the support rod, and the other end is located on the slider. One end of the shock-absorbing spring is located on the support base plate, and the other end is located on the vibrating screen cylinder body. The receiving plate is located on the inner wall of the vibrating screen cylinder body and below the material conveying trough. The screen holes are located on the receiving plate. The controller is located on the support rod. The discharge trough is located on the material conveying trough and penetrates through the vibrating screen cylinder body.

[0004] Regarding the aforementioned related technologies, the inventors believe that they have the following drawbacks: when seeds are fed from the side of the feeding trough near the center onto the receiving tray via a vibrating motor, some heavier impurities and dust in the feeding trough move towards the bottom layer of wheat seeds, and some impurities cannot fall onto the receiving tray for removal. The ability to remove these impurities needs improvement, and only a portion of the wheat seeds in the feeding trough can fall onto the receiving tray, which does not allow for sufficient sorting of the wheat seeds. Therefore, in order to solve the above-mentioned technical problems, this application proposes a wheat grain specific gravity grading device and method. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a wheat grain specific gravity grading device and method.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wheat grain specific gravity grading device, comprising:

[0007] A screening housing is disposed inside a fixed outer shell. The screening housing comprises, from top to bottom, a first outer shell, a third outer shell, a second outer shell, and one or more fourth outer shells. The top end of the third outer shell is fixedly connected to the bottom end of the first outer shell, and the bottom end of the third outer shell is fixedly connected to the top end of the second outer shell. The opening at the top end of the third outer shell is larger than its opening at the bottom end. The bottom end of the second outer shell is fixedly connected to the top end of the fourth outer shell. A first screen is fixedly installed on the inner surface of the first outer shell, with a protrusion at its center. A waste outlet is provided on the first outer shell at the edge of the first screen. A fixed inner shell is fixedly installed inside the second outer shell, and the inner surface of the second outer shell is connected to the outer surface of the fixed inner shell. A falling channel is formed between the two shells. A guide shell is fixedly installed on the top of the fixed inner shell. A second impurity discharge channel is fixedly installed on the second shell. An air outlet channel is opened on the outer surface of the fixed inner shell. The number of air outlet channels is adapted to the number of second impurity discharge channels. A blower assembly is fixedly installed inside the fixed inner shell. An arc-shaped shell is fixedly installed on the bottom of the second shell. A discharge channel is opened at the bottom of the arc-shaped shell. A second screen is fixedly installed on the inner surface of the fourth shell. A first lifting part is provided in the middle of the second screen. A second lifting part is provided at the edge of the second screen. A discharge port is opened on the fourth shell at the top edge of the second lifting part. A discharge port is provided at the bottom of the fixed shell.

[0008] A vibration assembly is fixedly mounted on a fixed housing, with one end of the vibration assembly fixedly connected to the screening housing. The vibration assembly is configured to enable the screening housing to move in both the horizontal and vertical directions.

[0009] The vibration support assembly has one end fixedly mounted on the inner surface of the fixed housing and the other end fixedly mounted on the outer surface of the screening housing.

[0010] Preferably, the discharge channel is located directly above the first lifting section.

[0011] Preferably, a guide plate is fixedly installed on the top of the fixed inner shell, the guide plate is configured to tilt downwards, and the second waste outlet channel is configured to tilt upwards.

[0012] Preferably, a second waste discharge guide plate is fixedly installed on the outer surface of the first housing. The second waste discharge guide plate is inclined downwards and positioned below the waste discharge port. The number of second waste discharge guide plates is the same as the number of waste discharge ports, and they are arranged in a one-to-one correspondence. Multiple first waste discharge guide plates are fixedly installed on the fixed housing, each first waste discharge guide plate corresponding to one second waste discharge guide plate. The first waste discharge guide plates are inclined downwards, and their top ends are positioned directly below the bottom ends of the second waste discharge guide plates. A second discharge port is fixedly installed on the outer surface of the fourth housing. The first discharge guide plate is inclined downwards and positioned below the discharge port. The number of second discharge guide plates is the same as the number of discharge ports, and they are arranged in a one-to-one correspondence. Multiple first discharge guide plates are fixedly installed on the fixed housing, with each first discharge guide plate corresponding to a second discharge guide plate. The first discharge guide plates are inclined downwards, and the top of the first discharge guide plate is positioned directly below the bottom of the second discharge guide plate. A first impurity discharge channel is fixedly installed on the fixed housing, and the outlet end of the second impurity discharge channel is located inside the first impurity discharge channel.

[0013] Preferably, the vibration support assembly includes a first elastic telescopic rod, a second elastic telescopic rod, and a telescopic connecting rod;

[0014] A support ring is fixedly installed on the inner surface of the fixed housing. The fixed ends of the first elastic telescopic rod and the second elastic telescopic rod are fixedly installed on the support ring. A slide rail is fixedly installed on the movable end of the first elastic telescopic rod. The slide rail is arranged parallel to the direction of horizontal movement of the screening housing. Multiple telescopic connecting rods are provided. The fixed end of each telescopic connecting rod is fixedly installed on the outer surface of the screening housing. The movable end of a portion of the telescopic connecting rods is fixedly connected to the movable end of the second elastic telescopic rod. A sliding block is fixedly installed on the movable end of another portion of the telescopic connecting rods. The sliding block is slidably disposed in the slide rail.

[0015] Preferably, the vibration assembly includes a motor, a turntable, and a connecting block;

[0016] The motor is fixedly mounted on the fixed housing, and the turntable is fixedly mounted on the output end of the motor; one end of the connecting block is fixedly connected to the turntable, and the other end is fixedly connected to the screening housing.

[0017] Preferably, a storage cylinder is fixedly installed on the top of the fixed outer shell, and the storage cylinder is positioned directly above the protrusion. A fixed disk is fixedly installed at the bottom of the storage cylinder. Rotating plates are rotatably installed at equal intervals along the circumference of the fixed disk. The end of the rotating plate near the fixed disk is a flat surface. Multiple rotating plates close the bottom outlet of the storage cylinder. A shaft is fixedly installed on one end of each rotating plate. One end of the shaft passes through the interior of the storage cylinder and is rotatably connected to the storage cylinder. A swing arm is fixedly installed on one end of the shaft. Two adjacent swing arms are rotatably connected by a connecting rod. A transmission assembly is provided between one of the swing arms and the output end of the motor. This transmission assembly is configured to make the swing arm oscillate back and forth within a certain angle.

[0018] Preferably, the transmission assembly includes a transmission belt, a rotating column, a drive disc, and a drive rod;

[0019] One end of the rotating column is rotatably mounted on the inner surface of the fixed housing; one end of the transmission belt is sleeved on the output end of the motor, and the other end is sleeved on the rotating column; the drive disc is fixedly mounted on the other end of the rotating column; the drive rod is fixedly mounted on the edge of the drive disc; the swing rod has a track groove, and the drive rod is slidably mounted on the track groove.

[0020] Preferably, adjacent rotating plates are staggered in the height direction.

[0021] A method for grading wheat based on grain density, including the aforementioned wheat grain density grading equipment, includes the following steps:

[0022] S1: Place the wheat to be screened inside the storage cylinder, then start the motor to make the screening shell reciprocate in the vertical and horizontal directions. Under the transmission action of the transmission component, all the rotating plates reciprocate within a certain angle range, opening or closing the bottom outlet of the storage cylinder.

[0023] S2: The wheat inside the storage cylinder falls evenly onto the surface of the first screen. The first screen blocks larger impurities, which then enter the second impurity guide plate through the impurity outlet, fall from the second impurity guide plate to the first impurity guide plate, and are discharged from the first impurity guide plate.

[0024] S3: The wheat passing through the first screen enters the falling channel through the third outer shell and the guide shell. During the falling process, the blower assembly blows air into the falling channel, blowing the hollow wheat shells or dust through the second waste discharge channel into the first waste discharge channel, and then discharges them through the first waste discharge channel.

[0025] S4: Wheat falls into the second screen through the discharge channel at the bottom of the arc-shaped shell. Wheat that fails to pass through the second screen moves to the top edge of the second lifting part and enters the second discharge guide plate through the discharge port. Then it falls onto the first discharge guide plate and is discharged by the first discharge guide plate.

[0026] S5: Wheat passing through the second screen is discharged through the discharge port at the bottom of the fixed shell.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] This invention configures the screening housing as follows, from top to bottom: a first outer shell, a third outer shell, a second outer shell, and one or more fourth outer shells. A first screen is fixedly installed on the inner surface of the first outer shell. A fixed inner shell is fixedly installed inside the second outer shell. A falling channel is formed between the inner surface of the second outer shell and the outer surface of the fixed inner shell. An air outlet channel is provided on the outer surface of the fixed inner shell. A blower assembly is fixedly installed inside the fixed inner shell. A second screen is fixedly installed on the inner surface of the fourth outer shell. A first lifting part is provided in the middle of the second screen, and a second lifting part is provided at the edge of the second screen. This invention enables multi-stage sorting of wheat with good sorting effect and strong impurity removal capability.

[0029] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the fixed outer shell and the storage cylinder in this invention;

[0033] Figure 3 This is a schematic diagram of the structure of the screening shell and the vibration support assembly in this invention;

[0034] Figure 4 This is a schematic diagram of the structure of the screening shell and the storage cylinder in this invention;

[0035] Figure 5 This is a schematic cross-sectional view of the screening shell in this invention;

[0036] Figure 6 This is a schematic diagram of the structure of the second outer shell and the fixed inner shell in this invention;

[0037] Figure 7 This is a schematic diagram of the structure of the storage cylinder, transmission assembly, and vibration assembly in this invention;

[0038] Figure 8 In this invention Figure 7 Enlarged view of part A in the image;

[0039] Figure 9 This is a schematic diagram of the structure of multiple rotating plates in this invention;

[0040] Figure 10 This is a schematic diagram of the vibration support assembly in this invention.

[0041] 10. Fixed outer casing; 101. Support ring; 11. First waste discharge guide plate; 12. First discharge guide plate; 13. First waste discharge channel;

[0042] 20. Blower; 21. Pipe; 22. Exhaust casing;

[0043] 30. First outer shell; 301. Impurity outlet; 302. Second impurity outlet guide plate; 31. Second outer shell; 311. Arc-shaped outer shell; 312. Falling channel; 313. Second impurity outlet channel; 32. Fourth outer shell; 321. Discharge port; 322. Second discharge guide plate; 33. Third outer shell;

[0044] 40. First screen; 401. Protrusion; 41. Second screen; 411. First lifting part; 412. Second lifting part;

[0045] 50. Fixed inner shell; 501. Guide shell; 502. Guide plate; 503. Air outlet duct;

[0046] 60. Storage cylinder; 61. Fixed plate; 62. Rotating plate; 621. Shaft; 63. Swing rod; 631. Track groove; 64. Connecting rod;

[0047] 70. Motor; 71. Turntable; 73. Connecting block;

[0048] 80. Drive belt; 81. Rotating column; 82. Drive disc; 821. Drive rod;

[0049] 90. First elastic telescopic rod; 91. Second elastic telescopic rod; 911. Slide rail; 92. Telescopic connecting rod; 921. Sliding block. Detailed Implementation

[0050] The following is in conjunction with the appendix Figure 1-10The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0051] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] Example 1:

[0054] Please combine Figures 1 to 10 This invention provides a wheat grain gravity grading device, comprising a screening shell, a vibration assembly, and a vibration support assembly:

[0055] A vibration assembly is fixedly mounted on the fixed housing 10, with one end of the vibration assembly fixedly connected to the screening housing. The vibration assembly is configured to enable the screening housing to move in both the horizontal and vertical directions.

[0056] The vibration support assembly has one end fixedly mounted on the inner surface of the fixed housing 10, and the other end fixedly mounted on the outer surface of the screening housing.

[0057] The screening housing is located inside the fixed outer shell 10. From top to bottom, the screening housing consists of a first outer shell 30, a third outer shell 33, a second outer shell 31, and one or more fourth outer shells 32. The top end of the third outer shell 33 is fixedly connected to the bottom end of the first outer shell 30, and the bottom end of the third outer shell 33 is fixedly connected to the top end of the second outer shell 31. The opening at the top end of the third outer shell 33 is larger than the opening at its bottom end. The bottom end of the second outer shell 31 is fixedly connected to the top end of the fourth outer shell 32. A first screen 40 is fixedly installed on the inner surface of the first outer shell 30, and a protrusion 40 is provided at the center of the first screen 40. 1. A discharge port 301 is provided on the first outer shell 30 at the edge of the first screen 40. Wheat to be screened is put into the interior of the first outer shell 30, and the wheat falls onto the surface of the first screen 40 for screening. The first screen 40 can block larger impurities. After being blocked, these impurities move towards the edge of the first screen 40 and are discharged through the discharge port 301. A fixed inner shell 50 is fixedly installed inside the second outer shell 31. A falling channel 312 is formed between the inner surface of the second outer shell 31 and the outer surface of the fixed inner shell 50. A guide shell 50 is fixedly provided on the top of the fixed inner shell 50. 1. Because the top opening of the third outer shell 33 is larger than its bottom opening, a portion of the wheat passing through the first screen 40 falls onto the inner surface of the third outer shell 33 and flows into the top position of the falling channel 312. A portion of the wheat falls onto the guide shell 501 and flows into the top position of the falling channel 312, causing the wheat to fall in a waterfall-like manner within the falling channel 312. A second waste discharge channel 313 is fixedly provided on the second outer shell 31, and an air outlet channel 503 is opened on the outer surface of the fixed inner shell 50. The number of air outlet channels 503 and the number of second waste discharge channels 313 are... Correspondingly, a blower assembly is fixedly installed inside the fixed inner shell 50. The blower assembly blows air into the falling channel 312, which can blow the dust and empty shells and other impurities mixed in the wheat into the second impurity discharge channel 313. During this impurity removal process, the wheat falls in a waterfall shape under its own gravity. The wheat is in an unobstructed state, and the contact area with the wind is large, so the effect of removing dust and empty shells and other impurities is better. An arc-shaped outer shell 311 is fixedly installed on the bottom end of the second outer shell 31. An outlet channel is opened at the bottom end of the arc-shaped outer shell 311. After the wheat passes through the falling channel 312, it is guided to the outlet channel by the arc-shaped outer shell 311.A second screen 41 is fixedly installed on the inner surface of the fourth outer casing 32. A first lifting part 411 is provided in the middle of the second screen 41, and a second lifting part 412 is provided at the edge of the second screen 41. A discharge port 321 is provided on the fourth outer casing 32 at the top edge of the second lifting part 412. Since the second screen 41 can reciprocate in the horizontal direction, the wheat will reciprocate on the first lifting part 411 and the second lifting part 412. Since the second screen 41 can only block wheat larger than its screen holes, and the larger wheat is heavier, it will gradually concentrate in the smaller wheat. At the bottom of the wheat, the larger wheat particles will concentrate at the bottom of the first lifting section 411. Wheat that can pass through the second screen 41 will pass directly through the first lifting section 411. Wheat that cannot pass through the second screen 41 will mainly concentrate at the bottom of the second lifting section 412. During the reciprocating motion of the second lifting section 412 in the horizontal direction, the larger wheat particles can move to the top of the second lifting section 412 until they are discharged through the discharge port 321. A discharge port is provided at the bottom of the fixed outer shell 10, and the wheat that passes through the second screen 41 will be discharged through this discharge port.

[0058] It should be further explained that when multiple fourth housings 32 are provided, two adjacent fourth housings 32 are fixedly connected. Each fourth housing 32 is provided with a discharge port 321 and a second discharge guide plate 322. A second screen 41 is fixedly installed inside each fourth housing 32. The shape of each second screen 41 is the same. The difference is that the screen holes on the upper second screen 41 are larger than those on the lower second screen 41, thereby realizing multi-stage sorting and improving the practicality of the grading equipment.

[0059] Furthermore, to further improve the sorting effect of the grading equipment, the discharge channel is located directly above the first lifting section 411. Wheat falling from the discharge channel will fall directly to the top of the first lifting section 411 and slide towards the bottom of the first lifting section 411. Combined with the fact that the second screen 41 can move in both horizontal and vertical directions, wheat that can pass through the second screen 41 can quickly pass through the screen on the second screen 41 and complete the sorting. Wheat that is too large to pass through the second screen 41 is mainly distributed in the area of ​​the second lifting section 412. Therefore, wheat that can pass through the second screen 41 mainly passes through the second screen 41 in the area of ​​the first lifting section 411. The first lifting section 411 is located in the middle of the second screen 41, so wheat that passes through the second screen 41 also falls onto the first lifting section 411 below the second screen 41. Therefore, this grading equipment has an excellent sorting effect for wheat of each grade.

[0060] Furthermore, to enhance the impurity removal capability of the grading equipment, a guide plate 502 is fixedly installed on the top of the fixed inner shell 50. The guide plate 502 is inclined downwards and located within the falling channel 312. The distance between the bottom end of the guide plate 502 and the inner surface of the second outer shell 31 is small, thus reducing the width of the opening at the top of the falling channel 312. This limits the amount of wheat entering the falling channel 312, preventing wheat from blocking each other due to a large quantity of wheat, which could prevent wheat from failing to pass through the falling channel 312. Dust and empty shells and other impurities are completely removed. In addition, the top of the guide plate 502 is fixedly installed on the fixed inner shell 50, and the bottom of the guide plate 502 is closer to the inner surface of the second outer shell 31. The wheat guided by the guide plate 502 enters the falling channel 312. The wheat is closer to the inner surface of the second outer shell 31. The wind generated by the blower assembly can more quickly blow the dust and empty shells and other impurities into the second discharge channel 313 for discharge. The second discharge channel 313 is set to be inclined upwards, so that no part of the falling wheat will be discharged through the second discharge channel 313.

[0061] The blower assembly has the following specific structure: blower 20, branch pipe 21, and air outlet housing 22. Blower 20 is fixedly installed on the inner surface of fixed inner housing 50. Branch pipe 21 is fixedly installed on the air outlet end of blower 20. One or more air outlet housings 22 are provided and fixedly installed on branch pipe 21. Each air outlet housing 22 is connected to the interior of branch pipe 21. The air outlet end of air outlet housing 22 is located at air outlet channel 503. The air generated by blower 20 is delivered to each air outlet housing 22 by branch pipe 21 and discharged from air outlet channel 503.

[0062] Regarding the method of impurity discharge and material discharge of this grading equipment, it should be noted that a second impurity discharge guide plate 302 is fixedly installed on the outer surface of the first outer shell 30. The second impurity discharge guide plate 302 is inclined downward and is located below the impurity discharge port 301. The number of second impurity discharge guide plates 302 is the same as the number of impurity discharge ports 301, and they are arranged in a one-to-one correspondence. A plurality of first impurity discharge guide plates 11 are fixedly installed on the fixed outer shell 10, and each first impurity discharge guide plate 11 corresponds to one second impurity discharge guide plate 302. Correspondingly, the first impurity guide plate 11 is inclined downwards, and its top end is positioned directly below the bottom end of the second impurity guide plate 302. Impurities discharged from the impurity outlet 301 first enter the second impurity guide plate 302. Under the influence of gravity, the impurities move towards the bottom end of the second impurity guide plate 302 and finally fall to the top end of the first impurity guide plate 11, and are discharged into the interior of the fixed housing 10. A second discharge guide plate 322 is fixedly installed on the outer surface of the fourth housing 32. The first discharge guide plate 322 is positioned below the discharge port 321, with the number of second discharge guide plates 322 matching the number of discharge ports 321. Multiple first discharge guide plates 12 are fixedly mounted on the housing 10, each corresponding to one second discharge guide plate 322. The first discharge guide plates 12 are inclined downwards, with their tops positioned directly below the bottoms of the second discharge guide plates 322. Wheat is discharged from the discharge port 321. The wheat is discharged into the second discharge guide plate 322. Under its own gravity, the wheat moves towards the bottom of the second discharge guide plate 322 and falls onto the first discharge guide plate 12, and is discharged from the inside of the fixed housing 10 through the first discharge guide plate 12. The fixed housing 10 is fixedly installed with a first impurity discharge channel 13. The outlet end of the second impurity discharge channel 313 is located inside the first impurity discharge channel 13. Dust and impurities such as empty shells are discharged from the second impurity discharge channel 313 into the first impurity discharge channel 13 and discharged through the first impurity discharge channel 13.

[0063] Example 2:

[0064] For the vibration support assembly, the vibration support assembly includes a first elastic telescopic rod 90, a second elastic telescopic rod 91, and a telescopic connecting rod 92;

[0065] A support ring 101 is fixedly installed on the inner surface of the fixed housing 10. The fixed ends of the first elastic telescopic rod 90 and the second elastic telescopic rod 91 are fixedly installed on the support ring 101. A slide rail 911 is fixedly installed on the movable end of the first elastic telescopic rod 90. The slide rail 911 is set parallel to the direction of horizontal movement of the screening housing, so that the screening housing can reciprocate in the horizontal direction. Multiple telescopic connecting rods 92 are provided. The fixed end of each telescopic connecting rod 92 is fixedly installed on the outer surface of the screening housing. The movable end of some of the telescopic connecting rods 92 is fixedly connected to the movable end of the second elastic telescopic rod 91. A sliding block 921 is fixedly installed on the movable end of another part of the telescopic connecting rods 92. The sliding block 921 is slidably disposed in the slide rail 911. With the above structure, the multiple first elastic telescopic rods 90 and second elastic telescopic rods 91 provide support for the screening housing and improve the stability of the screening housing in the vertical and horizontal reciprocating motion. Multiple sets of this vibration support assembly can be provided.

[0066] The specific structure of the vibration assembly is as follows: the vibration assembly includes a motor 70, a turntable 71, and a connecting block 73; the motor 70 is fixedly installed on the fixed housing 10, and the turntable 71 is fixedly installed on the output end of the motor 70; one end of the connecting block 73 is fixedly connected to the turntable 71, and the other end is fixedly connected to the screening housing.

[0067] Example 3:

[0068] In existing grading equipment, wheat can generally only be sorted once. After sorting, it needs to be re-fed and sorted again, requiring frequent stops and starts, which prevents continuous sorting and severely affects the sorting efficiency. A storage cylinder 60 is fixedly installed on the top of the fixed outer shell 10. A fixed disk 61 is fixedly installed at the bottom of the storage cylinder 60. Rotating plates 62 are evenly spaced along the circumference of the fixed disk 61. The end of the rotating plate 62 closest to the fixed disk 61 is a flat surface, allowing the rotating plate 62 to rotate freely. Multiple rotating plates... 62 seals the bottom outlet of the storage cylinder 60. A shaft 621 is fixedly installed on one end of each rotating plate 62. One end of the shaft 621 passes through the interior of the storage cylinder 60 and is rotatably connected to it. A rocker arm 63 is fixedly installed on one end of the shaft 621. Adjacent rocker arms 63 are rotatably connected by a connecting rod 64. A transmission assembly is provided between one of the rocker arms 63 and the output end of the motor 70. This transmission assembly is configured to cause the rocker arm 63 to oscillate back and forth within a certain angle. Since the storage cylinder 60 is located at the protrusion 401... At the top, the wheat falls concentratedly into the middle of the first screen 40, allowing it to pass smoothly through. A rotating plate 62, capable of reciprocating within a certain angle, opens or closes the bottom outlet of the storage cylinder 60, ensuring the wheat falls evenly onto the first screen 40. The falling wheat does not concentrate in any one area of ​​the first screen 40. Each rotating plate 62 continuously opens and closes the bottom outlet of the storage cylinder 60. Once a certain amount of wheat has fallen onto the first screen 40, the feeding stops, and the first screen 40 is complete. After screening, the bottom outlet of the storage cylinder 60 opens again, conveying a certain amount of wheat onto the first screen 40. This process is repeated continuously, which not only allows a certain amount of wheat to be continuously added to the first screen 40, but also prevents excessive wheat accumulation on the first screen 40, thus avoiding affecting the sorting effect. In addition, each rotating plate 62 is driven by a motor 70. As long as the grading equipment is started, wheat is automatically added to the first screen 40. Users only need to add the wheat to be sorted into the storage cylinder 60, making it simple and convenient to use.

[0069] It should be emphasized that the two adjacent rotating plates 62 are staggered in the height direction. Since the rotating plates 62 have a certain thickness, when the rotating plates 62 close the bottom outlet of the storage cylinder 60, they can easily trap the wheat between the two adjacent rotating plates 62, causing damage to the wheat. However, since the two adjacent rotating plates 62 are staggered, the wheat will not be trapped and damaged, and the bottom of the rotating plates 62 can be guaranteed to have a good sealing effect, preventing wheat from leaking out between the two rotating plates 62.

[0070] Regarding the transmission assembly, it should be noted that the transmission assembly includes a transmission belt 80, a rotating column 81, a drive disc 82, and a drive rod 821. One end of the rotating column 81 is rotatably mounted on the inner surface of the fixed housing 10. One end of the transmission belt 80 is sleeved on the output end of the motor 70, and the other end is sleeved on the rotating column 81. The drive disc 82 is fixedly mounted on the other end of the rotating column 81, and the drive rod 821 is fixedly mounted on the edge of the drive disc 82. The swing arm 63 has a track groove 631, and the drive rod 821 is slidably mounted on the track groove 631. After the motor 70 is started, the rotating column 81 can be rotated under the transmission action of the transmission belt 80, and then the drive rod 821 rotates together with the drive disc 82, and the drive rod 821 pushes the swing arm 63 to swing.

[0071] A method for grading wheat grains based on specific gravity, including the aforementioned wheat grain specific gravity grading equipment, includes the following steps:

[0072] S1: Place the wheat to be screened inside the storage cylinder 60, then start the motor 70 to make the screening shell reciprocate in the vertical and horizontal directions. Under the transmission action of the transmission component, all the rotating plates 62 reciprocate within a certain angle range, opening or closing the bottom outlet of the storage cylinder 60.

[0073] S2: The wheat inside the storage cylinder 60 falls evenly onto the surface of the first screen 40. The first screen 40 blocks larger impurities, which then enter the second discharge guide plate 302 through the discharge port 301, fall from the second discharge guide plate 302 to the first discharge guide plate 11, and are discharged from the first discharge guide plate 11.

[0074] S3: Wheat passing through the first screen 40 flows into the falling channel 312 through the third outer shell 33 and the guide shell 501. During the falling process, the blower assembly blows air into the falling channel 312, blowing the hollow shells or dust of the wheat through the second waste discharge channel 313 into the first waste discharge channel 13, and then discharges them through the first waste discharge channel 13.

[0075] S4: Wheat falls into the second screen 41 through the discharge channel at the bottom of the arc-shaped outer shell 311. Wheat that fails to pass through the second screen 41 moves to the top edge of the second lifting part 412 and enters the second discharge guide plate 322 through the discharge port 321. Then it falls into the first discharge guide plate 12 and is discharged from the first discharge guide plate 12.

[0076] S5: Wheat passing through the second screen 41 is discharged through the discharge port at the bottom of the fixed outer shell 10.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A wheat kernel specific gravity based grading apparatus, characterized by, The application relates to a screening device, which comprises the following components. A screening shell is arranged in a fixed shell (10), and the screening shell comprises a first shell (30), a third shell (33), a second shell (31) and one or more fourth shells (32) arranged in sequence from top to bottom; the top end of the third shell (33) is fixedly connected with the bottom end of the first shell (30), the bottom end of the third shell (33) is fixedly connected with the top end of the second shell (31), the top end of the third shell (33) is larger than the bottom end in opening, and the bottom end of the second shell (31) is fixedly connected with the top end of the fourth shell (32); a first screen (40) is fixedly arranged on the inner surface of the first shell (30), a convex part (401) is arranged at the center of the first screen (40), and a foreign matter discharging port (301) is arranged on the first shell (30) and located at the edge of the first screen (40); a fixed inner shell (50) is fixedly arranged in the second shell (31), a falling channel (312) is formed between the inner surface of the second shell (31) and the outer surface of the fixed inner shell (50), a guide shell (501) is fixedly arranged on the top end of the fixed inner shell (50), a second foreign matter discharging channel (313) is fixedly arranged on the second shell (31), a wind discharging channel (503) is arranged on the outer surface of the fixed inner shell (50), the number of the wind discharging channel (503) is matched with that of the second foreign matter discharging channel (313), a blowing assembly is fixedly arranged in the fixed inner shell (50), an arc-shaped shell (311) is fixedly arranged on the bottom end of the second shell (31), and a discharging channel is arranged at the bottom end of the arc-shaped shell (311); a second screen (41) is fixedly arranged on the inner surface of the fourth shell (32), a first lifting part (411) is arranged at the middle of the second screen (41), a second lifting part (412) is arranged at the edge of the second screen (41), a discharging port (321) is arranged on the fourth shell (32) and located at the top edge of the second lifting part (412), and a discharging port is arranged at the bottom end of the fixed shell (10); A vibrating assembly is fixedly arranged on the fixed shell (10), one end of the vibrating assembly is fixedly connected with the screening shell, and the vibrating assembly is configured to enable the screening shell to move in the horizontal direction and the vertical direction; A vibrating support assembly is fixedly arranged on the inner surface of the fixed shell (10) at one end and on the outer surface of the screening shell at the other end; The discharging channel is arranged above the first lifting part (411). The top of the fixed shell (10) is fixedly installed with a storage cylinder (60), which is arranged above the protruding portion (401), and the inner bottom of the storage cylinder (60) is fixedly installed with a fixed disc (61), a plurality of rotating plates (62) are rotatably installed on the circumference of the fixed disc (61) at equal intervals, one end of the rotating plate (62) close to the fixed disc (61) is a plane, the bottom outlet of the storage cylinder (60) is closed by the rotating plates (62), one end of each rotating plate (62) is fixedly installed with a shaft rod (621), one end of the shaft rod (621) penetrates the interior of the storage cylinder (60) and is rotatably connected with the storage cylinder (60), one end of the shaft rod (621) is fixedly installed with a swing rod (63), adjacent two swing rods (63) are rotatably connected through a connecting rod (64), and one of the swing rods (63) and the output end of the motor (70) are provided with a transmission assembly, which is configured to make the swing rod (63) reciprocate within a certain angle.

2. A wheat kernel specific gravity classification apparatus according to claim 1, characterised in that: The top of the fixed inner shell (50) is fixedly installed with a guide plate (502), and the guide plate (502) is arranged to be downwardly inclined.

3. A wheat kernel specific gravity classification apparatus according to claim 2, characterised in that: The outer surface of the first shell (30) is fixedly installed with a second impurity outlet guide plate (302), which is arranged to be downwardly inclined, the second impurity outlet guide plate (302) is arranged below the impurity outlet (301), the number of the second impurity outlet guide plate (302) is the same as that of the impurity outlet (301) and they are arranged one by one in correspondence, a plurality of first impurity outlet guide plates (11) are fixedly installed on the fixed shell (10), each first impurity outlet guide plate (11) corresponds to one second impurity outlet guide plate (302), the first impurity outlet guide plate (11) is arranged to be downwardly inclined, and the top of the first impurity outlet guide plate (11) is arranged below the bottom of the second impurity outlet guide plate (302), the outer surface of the fourth shell (32) is fixedly installed with a second discharge guide plate (322), which is arranged to be downwardly inclined, the second discharge guide plate (322) is arranged below the discharge port (321), the number of the second discharge guide plate (322) is the same as that of the discharge port (321) and they are arranged one by one in correspondence, a plurality of first discharge guide plates (12) are fixedly installed on the fixed shell (10), each first discharge guide plate (12) corresponds to one second discharge guide plate (322), the first discharge guide plate (12) is arranged to be downwardly inclined, and the top of the first discharge guide plate (12) is arranged below the bottom of the second discharge guide plate (322), and the fixed shell (10) is fixedly installed with a first impurity outlet channel (13), and the outlet end of the second impurity outlet channel (313) is arranged in the first impurity outlet channel (13).

4. A wheat kernel specific gravity classification apparatus according to claim 3, characterised in that: The vibration support assembly comprises a first elastic telescopic rod (90), a second elastic telescopic rod (91) and a telescopic connecting rod (92). The inner surface of the fixed shell (10) is fixedly provided with a supporting ring (101), and the fixed ends of the first elastic telescopic rod (90) and the second elastic telescopic rod (91) are fixedly provided on the supporting ring (101); the movable end of the first elastic telescopic rod (90) is fixedly provided with a sliding rail (911), which is arranged in parallel with the horizontal movement direction of the screening shell; a plurality of telescopic connecting rods (92) are arranged, the fixed ends of the telescopic connecting rods (92) are fixedly provided on the outer surface of the screening shell, the movable ends of some of the telescopic connecting rods (92) are fixedly connected with the movable end of the second elastic telescopic rod (91), and the movable ends of the other telescopic connecting rods (92) are fixedly provided with sliding blocks (921) which are slidingly arranged in the sliding rail (911).

5. A wheat kernel specific gravity classification apparatus according to claim 1, characterised in that: The vibration assembly comprises a motor (70), a rotating disc (71) and a connecting block (73). The motor (70) is fixedly provided on the fixed shell (10), and the rotating disc (71) is fixedly provided on the output end of the motor (70); one end of the connecting block (73) is fixedly connected with the rotating disc (71), and the other end is fixedly connected with the screening shell.

6. A wheat kernel specific gravity classification apparatus according to claim 5, characterised in that: The transmission assembly comprises a transmission belt (80), a rotating column (81), a driving disc (82) and a driving rod (821). One end of the rotating column (81) is rotatably provided on the inner surface of the fixed shell (10); one end of the transmission belt (80) is sleeved on the output end of the motor (70), and the other end is sleeved on the rotating column (81); the driving disc (82) is fixedly provided on the other end of the rotating column (81); the driving rod (821) is fixedly provided at the edge of the driving disc (82); the swing rod (63) is provided with a track groove (631), and the driving rod (821) is slidingly arranged in the track groove (631).

7. A wheat kernel specific gravity classification apparatus according to claim 6, characterised in that: The adjacent two rotating plates (62) are arranged in a staggered manner in the height direction.

8. A method for classifying wheat kernels by specific weight using the apparatus for classifying wheat kernels by specific weight according to claims 1 to 7, characterized in that: The method comprises the following steps: S1: placing the wheat to be screened in the inside of the storage cylinder (60), and then starting the motor (70) to make the screening shell reciprocate in the vertical direction and the horizontal direction, and under the transmission of the transmission assembly, making all the rotating plates (62) reciprocate in a certain angle range, opening or closing the bottom outlet of the storage cylinder (60); S2: the wheat in the inside of the storage cylinder (60) falls uniformly on the surface of the first screen (40), the first screen (40) blocks the larger impurities, and part of the impurities enter the second impurity discharging guide plate (302) through the impurity discharging port (301), fall into the first impurity discharging guide plate (11) through the second impurity discharging guide plate (302), and are discharged through the first impurity discharging guide plate (11); S3: The wheat passing through the first screen (40) falls into the falling channel (312) through the third shell (33) and the guide shell (501), and in the process of falling, the air blowing assembly blows air into the falling channel (312), so that the empty shell or dust in the wheat is blown into the first impurity outlet channel (13) through the second impurity outlet channel (313) and discharged by the first impurity outlet channel (13); S4: The wheat falls into the second screen (41) through the discharge channel at the bottom end of the arc-shaped shell (311), and the wheat that fails to pass through the second screen (41) moves to the top edge of the second lifting part (412) and enters the second discharge guide plate (322) through the discharge port (321), and then falls onto the first discharge guide plate (12) and is discharged by the first discharge guide plate (12); S5: The wheat passing through the second screen (41) is discharged through the discharge port at the bottom end of the fixed shell (10).

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