Dry-type intelligent grain sorting method

Abstract

The invention discloses a dry-type intelligent grain sorting method, and relates to the technical field of grain sorting. A traditional wet grain cleaning mode is changed, impurities in grains are effectively removed in a dry screening and shock excitation layering mode, large-particle impurities are removed through primary screening, shock excitation layering mainly aims at impurities in side-by-side stones, heavy impurities and small-particle impurities are driven by shock excitation force to move downwards, and the impurities in the side-by-side stones are removed. Light grains are gradually gathered on the upper layer to form a grain layer, and are discharged through an upper discharging opening, so that the grain cleaning operation is completed; and underwater operation is not needed, the drying procedure is omitted, and the machining cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of grain sorting, and in particular to a dry intelligent grain sorting method. Background Art

[0002] Grain processing is a very important front-end industry in the fields of food industry, breeding industry, chemical industry, etc. During the processing, various impurities such as sand, gravel, rubble, thin materials (such as straw, branches, etc.), metal products (such as nails, short wires, nuts, bolts, etc.) mixed in the grain can easily cause blockage, wear and other damage to the processing system equipment, and then stop production and cause great economic losses to the enterprise. At present, most of the grain cleaning equipment on the market removes thin materials and large pieces of materials in the grain by screening, or by means of wind power, hydraulic jigging and other methods. However, it is difficult to remove the "shoulder stones" with a similar particle size to the grain by dry method. Therefore, a treatment solution is urgently needed to effectively remove the "shoulder stones" impurities in the grain. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a dry intelligent grain sorting method to separate and remove impurities in grain and stone.

[0004] To achieve this technical purpose, the present invention adopts the following scheme: The dry intelligent grain sorting method comprises the following steps: Primary screening: Use a vibrating screen to remove large-sized impurities from the material; Rescreening: The screened material after the initial screening is sent to the dry intelligent sorting bin for stratification. The density and particle size difference between grain and sand and gravel are utilized, and the exciting force is used as the driving force to drive the material in the dry intelligent sorting bin to vibrate up and down, forming a light grain layer on the upper part of the vibration sorting bin and a heavy impurity layer on the lower part. The impurities in the impurity layer are discharged from the lower discharge port in the form of overflow; the grain layer is discharged from the upper discharge port driven by the exciting force.

[0005] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention changes the traditional wet grain purification method, and adopts dry screening and vibration stratification to effectively remove impurities in grain. The initial screening removes large-particle impurities, and the vibration stratification is mainly aimed at impurities in the shoulder stones. The vibration force is used to drive heavy impurities and small-particle impurities to move downward, and light grains gradually gather in the upper layer to form a grain layer, which is discharged through the upper discharge port to complete the grain purification operation; there is no need for underwater operations, and the drying process is eliminated, which reduces processing costs.

[0006] Furthermore, the grain is any one of wheat grains, corn, bean pods, rice, cereal grains or sorghum.

[0007] Furthermore, impurities in grain include sand, gravel, rubble, wood blocks, metal products (nails, short wires, nuts, bolts), and light and thin materials.

[0008] Furthermore, the material under the vibrating screen is transported to the dry intelligent sorting bin via a conveyor belt.

[0009] Furthermore, the dry intelligent sorting bin includes a vibration frame, a vibration source for providing power to the vibration frame, and a vibration sorting bin for sorting materials. The vibration source is connected to the vibration frame, the vibration frame is elastically connected to the vibration sorting bin, a first discharge port is arranged at the upper end of the vibration sorting bin, and a second discharge port is arranged in the middle of the vibration sorting bin.

[0010] Furthermore, the dry intelligent sorting bin also includes a vibration-damping spring, and the lower end of the vibration frame is installed on the foundation through the vibration-damping spring; the upper end of the vibration frame is connected to a shear spring, and the shear spring is also connected to the bin body of the vibration sorting bin to form a dual-proton vibration system.

[0011] Furthermore, a baffle is provided between the first discharge port and the second discharge port, and the baffle spatially isolates the first discharge port and the second discharge port.

[0012] Furthermore, the baffle is divided into a fixed baffle and an adjustable baffle. The fixed baffle is used for diverting and discharging materials. The adjustable baffle is movably connected to the vibration sorting bin. The adjustable baffle slides up and down along the vibration sorting bin to achieve adjustable height position of the lower end of the adjustable baffle, which is used to control the thickness of the material layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A flow chart of dry intelligent grain sorting provided by the present invention; Figure 2 A top view of the dry intelligent sorting system provided by the present invention; Figure 3 A diagram of a layered interface of a vibration sorting bin provided in an embodiment of the present invention; Figure 4 A three-dimensional structural diagram of the dry intelligent sorting bin provided by the present invention; Figure 5 A schematic diagram of the side structure of a dry intelligent sorting bin provided in an embodiment of the present invention; Figure 6 A cross-sectional view of a dry intelligent sorting bin provided in an embodiment of the present invention; Figure 7 A partial cross-sectional view of an adjustment baffle provided in an embodiment of the present invention; The markings in the figure are: 1. Vibration frame; 2. Vibration sorting bin; 201. Vertical long hole; 3. Vibration source; 4. First discharge port; 5. Second discharge port; 6. Damping spring; 7. Shear spring; 8. Horizontal plate; 9. Inclined plate; 10. Adjustment baffle; 11. Vibrating screen; 12. Oversize conveyor belt; 13. Undersize conveyor belt; 14. Grain conveyor belt; 15. Impurity conveyor belt; 101. Screw; 102. Leak-proof side baffle. DETAILED DESCRIPTION

[0014] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0015] like Figure 1 As shown, the present invention provides a dry intelligent grain sorting method, which uses a dry intelligent sorting system for sorting.

[0016] like Figure 1 and Figure 2 As shown, the dry intelligent sorting system includes a primary screening structure and a secondary screening structure. The primary screening structure includes a vibrating screen 11, an oversize conveyor belt 12 and an undersize conveyor belt 13. An oversize collecting trough is arranged on the upper layer of the vibrating screen 11, and an oversize conveyor belt 12 for conveying large-size impurities is located below the outlet of the oversize collecting trough; an undersize collecting trough is arranged on the lower layer of the vibrating screen 11, and an undersize conveyor belt 13 for conveying grain and impurities with smaller particle sizes is located below the outlet of the undersize collecting trough. The undersize conveyor belt 13 conveys the primary screened material to the secondary screening structure for secondary screening.

[0017] The multi-screening structure includes a dry intelligent sorting bin, a grain conveyor belt 14 and an impurity conveyor belt 15. The dry intelligent sorting bin is provided with a feed port and two discharge ports. Above the feed port is the end of the undersize conveyor belt 13. The undersize conveyor belt 13 delivers the undersize after the initial screening to the dry intelligent sorting bin and feeds it from the feed port. A grain conveyor belt 14 is provided below one discharge port of the dry intelligent sorting bin, and an impurity conveyor belt 15 is provided below the other discharge port of the dry intelligent sorting bin.

[0018] like Figures 4 to 6As shown, the dry intelligent sorting bin includes a vibration frame 1, a vibration sorting bin 2 and a vibration source 3. The vibration source 3 is installed on the vibration frame 1. The upper end of the vibration frame 1 is elastically connected to the vibration sorting bin 2. The bottom surface of the vibration sorting bin 2 is a concave surface. A feed port is set at one end and a discharge port is set at the other end. The discharge port is divided into a first discharge port 4 and a second discharge port 5. The first discharge port 4 is located above the second discharge port 5 for discharging grain, and the second discharge port 5 is used to discharge impurities, such as sand and gravel. Preferably, the vibration sorting bin 2 is a ship-shaped structure. The vibration source 3 is started, driving the vibration frame 1 to vibrate, and then driving the vibration sorting bin 2 to vibrate. The material entering the vibration sorting bin 2 from the feed port moves up and down in the vibration sorting bin 2, so that the heavy impurities move downward and the light grain moves upward. Finally, the grain is discharged from the first discharge port 4 and the heavy impurities are discharged from the second discharge port 5. Preferably, the vibration source 3 is a vibration motor.

[0019] In some preferred embodiments, the dry intelligent sorting bin also includes a vibration-damping spring 6 and a shear spring 7; the lower end of the vibration frame 1 is fixedly connected to the upper end of the vibration-damping spring 6, and the lower end of the vibration-damping spring 6 is connected to a ground foundation or a plate foundation; the upper end of the vibration frame 1 is connected to one end of the shear spring 7, and the other end of the shear spring 7 is connected to the outer wall of the vibration sorting bin 2, forming a dual-proton vibration system.

[0020] In some more preferred embodiments, the vibration sorting bin 2 is a ship-shaped structure, and a baffle is fixed on the inner wall of the vibration sorting bin 2 between the first discharge port 4 and the second discharge port 5, which isolates the first discharge port 4 and the second discharge port 5 in space and discharges the materials by diversion. The baffle is divided into a fixed baffle and an adjustable baffle 10, and the fixed baffle is welded by a horizontal plate 8 and an inclined plate 9. The horizontal plate 8 of the fixed baffle is fixed near the first discharge port 4, and the inclined plate 9 is suspended on the upper part of the vibration sorting bin 2. The function of the inclined plate 9 is to prevent impurities from being mixed in the grain and discharged from the first discharge port 4. The material at the inclined plate 9 will slide down continuously, causing the mixed impurities to fall into the sand and gravel layer again. The upper end of the adjustable baffle 10 is connected to the inclined plate 9, and the two sides of the adjustable baffle 10 are respectively slidably connected to the side walls of the vibration sorting bin 2, and the height position of the adjustable baffle 10 is changed to adjust the material layer thickness and control the sorting efficiency.

[0021] A structural method for adjusting the baffle, such as Figure 7As shown: the side wall of the vibration sorting bin 2 is provided with a vertical strip hole 201, and the two sides of the lower end of the adjusting baffle 10 are respectively fixed with symmetrically arranged screws 101, and the two screws 101 are respectively inserted into the vertical strip holes 201 on the side, and the exposed ends of the screws 101 are fastened by bolts to fix the screws 101 and the adjusting baffle 10 at a certain height. The lower ends of the two sides of the adjusting baffle 10 are respectively extended with fixedly connected leakproof side baffles 102, the length of the leakproof side baffles 102 is greater than the length of the vertical strip hole 201, and the width of the leakproof side baffles 102 is greater than the width of the vertical strip hole 201. When the adjusting baffle 10 is lifted along the vertical strip hole 201, the leakproof side baffles 102 block the vertical strip hole 201 below the screw 101 to prevent material leakage.

[0022] The grain dry intelligent sorting method is mainly for any kind of grain among wheat grains, corn, bean pods, rice, grains or sorghum. The impurities in the grains include sand, gravel, wood blocks, metal products (nails, short wires, nuts, bolts), and thin materials. The steps are as follows: Primary screening: Use the primary screening structure to remove large-size impurities in the material.

[0023] Specifically, the grain mixed with impurities is transported to the vibrating screen 11 for primary screening. During the primary screening, large particles of impurities remain on the screen, slide into the upper material receiving trough, and are transported out through the upper material conveyor belt 12. Grain and small particles of impurities fall under the screen and are collected in the lower material receiving trough, and are transported to the vibrating sorting bin 2 through the lower material conveyor belt 13.

[0024] Rescreening: The screened material after the initial screening is sent to the dry intelligent sorting bin for stratification. The density and particle size difference between grain and sand and gravel are used, and the exciting force is used as the driving force to drive the material in the dry intelligent sorting bin to vibrate up and down. A light grain layer is formed on the upper part of the vibration sorting bin 2, and a heavy impurity layer is formed on the lower part. The impurities in the impurity layer are discharged from the lower discharge port in the form of overflow; the grain layer is discharged from the upper discharge port driven by the exciting force, such as Figure 3 shown.

[0025] Specifically, the vibration sorting bin 2 vibrates under the action of the vibration motor, driving the material in the bin to move up and down. Impurities with heavy mass and small particle size gradually gather in the lower part of the vibration sorting bin 2 to form a sand and gravel layer; light mass and uniformly large grain size gather in the upper part of the vibration sorting bin 2 to form a grain layer. The upper material of the sand and gravel layer is blocked by the adjustment baffle 10. The layer where the inclined plate 9 above the adjustment baffle 10 is located is the grain layer. Under the action of vibration, the grain layer moves along the inclined plate 9 to the first discharge port 4, and is finally discharged from the first discharge port 4 and falls into the grain conveyor belt 14. Due to the action of the inclined plate 9, even if the impurities are sandwiched by the grain and move upward, they will slide down along the inclined plate 9 at the inclined plate 9 and fall into the sand and gravel layer again. The sand and gravel layer moves from below the adjustment baffle 10 to the second discharge port 5 for discharge and falls into the impurity conveyor belt 15, completing the dry grain sorting operation.

[0026] Finally, it should be noted that the above-listed embodiments are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A dry intelligent grain sorting method, characterized in that: The steps include: Primary screening: Use a vibrating screen to remove large-sized impurities from the material; Rescreening: The screened materials after the initial screening are sent to the dry intelligent sorting bin for stratification. The density and particle size difference between grain and sand and gravel are used, and the exciting force is used as the driving force to drive the materials in the dry intelligent sorting bin to vibrate up and down, forming a light grain layer on the upper part of the vibration sorting bin and a heavy impurity layer on the lower part. The impurities in the impurity layer are discharged from the lower discharge port in the form of overflow; The grain layer is discharged from the upper discharge port driven by the exciting force.

2. The grain dry intelligent sorting method according to claim 1, characterized in that: The grain is any one of wheat kernels, corn, bean pods, rice, corn grains or sorghum.

3. The grain dry intelligent sorting method according to claim 1, characterized in that: Impurities in grain include sand, gravel, wood blocks, metal products, and thin materials.

4. The grain dry intelligent sorting method according to claim 1, characterized in that: The material under the vibrating screen is transported to the dry intelligent sorting bin via a conveyor belt.

5. The grain dry intelligent sorting method according to claim 1, characterized in that: The dry intelligent sorting bin includes a vibration frame, a vibration source for providing power to the vibration frame and a vibration sorting bin for sorting materials. The vibration source is connected to the vibration frame, the vibration frame is elastically connected to the vibration sorting bin, a first discharge port is arranged at the upper end of the vibration sorting bin, and a second discharge port is arranged in the middle of the vibration sorting bin.

6. The grain dry intelligent sorting method according to claim 5, characterized in that: The dry intelligent sorting bin also includes a vibration-damping spring, and the lower end of the vibration frame is installed on the foundation through the vibration-damping spring; the upper end of the vibration frame is connected with a shear spring, and the shear spring is also connected to the bin body of the vibration sorting bin to form a dual-proton vibration system.

7. The method for dry intelligent grain sorting according to claim 5, characterized in that: A baffle is provided between the first discharge port and the second discharge port, and the baffle separates the first discharge port and the second discharge port in space.

8. The grain dry intelligent sorting method according to claim 7, characterized in that: The baffle is divided into a fixed baffle and an adjustable baffle. The fixed baffle is used for diversion and discharge. The adjustable baffle is movably connected to the vibration sorting bin. The adjustable baffle slides up and down along the vibration sorting bin to achieve adjustable height position of the lower end of the adjustable baffle, which is used to control the thickness of the material layer.

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