Millet seed air flotation method screening device

Abstract

The utility model provides a millet seed air flotation method screening device, and relates to the technical field of millet seed screening. The millet seed air flotation screening device comprises a device body, the lower portion of the device body is in contact with a filtering device, the device body is sequentially provided with a feeding bin, a first material limiting bin and an air flotation screening bin from top to bottom, the feeding bin, the first material limiting bin and the air flotation screening bin are communicated with one another, and a penetrating type feeding opening is formed in the top of the feeding bin; a first conveying belt is rotationally connected to the inner wall of the first material limiting bin, and first push rods distributed at equal intervals are fixedly connected to the outer side of the first conveying belt. According to the millet seed air flotation screening device, the first conveying belt is arranged, and the first push rod is arranged on the first conveying belt, so that materials can be spread out when being subjected to air flotation screening, and the problem that light solids in the materials are not easy to blow away is solved; therefore, the material screening effect of the millet seed air flotation screening device can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a millet seed air flotation screening device, in particular to a millet seed air flotation screening device, belonging to the technical field of millet seed screening. Background Art

[0002] After extensive searching, it was found that: China Utility Model Patent Column: Publication No. 202321485818.8 A wheat seed flotation screening device includes a main body, a feeding mechanism and a wind selection mechanism, the main body is a tank mechanism, the upper end of the main body is open, the feeding mechanism is arranged at the upper end of the main body, the wind selection mechanism includes an air blowing mechanism arranged under the main body, and a collection cavity for collecting impurities is provided on the outside of the main body.

[0003] The device sends the material into the main body and slides along the spiral blades, and then blows air into the main body from the annular blowing chamber, using the gas to separate the lighter solids in the material. However, the device does not spread the material, so the lighter solids remaining in the accumulated material are not easy to be blown away. The material is stirred by the spiral blades, which causes the material to splash everywhere, resulting in the continuous falling and splashing of wheat seeds in the main body, and the lighter solids blown by the air will be easily hit by the falling or splashing materials above, thereby affecting the lighter solids from drifting away or being discharged by the wind, thereby affecting the screening between the material and the lighter solids, and at the same time reducing the screening efficiency of the millet seed flotation screening device. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to provide a millet seed air flotation screening device in order to solve the above-mentioned problem, so as to solve the problem that the millet seed air flotation screening device in the prior art is not easy to screen lighter solids.

[0006] (II) Technical solution

[0007] The utility model is implemented through the following technical scheme: a millet seed air flotation screening device, including a device body, a filtering device is in contact with the bottom of the device body, the device body is sequentially provided with a feed bin, a first limiting bin and an air flotation screening bin which are interconnected from top to bottom, a through-type feed port is formed on the top of the feed bin, a first conveyor belt is rotatably connected to the inner wall of the first limiting bin, first push rods which are equidistantly distributed are fixedly connected to the outer side of the first conveyor belt, the first push rods are in contact with the inner wall of the first limiting bin, an air jet screening mechanism is provided in the air flotation screening bin, a first through port is through-connected between the air flotation screening bin and the first limiting bin, and an air inlet and an exhaust port are respectively formed on the inner walls on both sides of the air flotation screening bin, the air jet screening mechanism includes both fixed A fan and an inclined ventilation plate are connected to the inner wall of an air flotation screening bin, wherein one side of the ventilation plate is provided with equidistantly distributed and through-type air holes, the top of the ventilation plate is fixedly connected to the side wall of the first opening, the fan is located between the ventilation plate and the air inlet, the fan is electrically connected to a power supply, a second opening is through-connected between the feed bin and the first limiting bin, a mounting opening through-connected to the first limiting bin is formed on the inner wall of one side of the feed bin, a scraper is rotatably connected to the bottom wall inside the mounting opening, the bottom of the scraper is in contact with the top of the first push rod at the top, a thin rod is rotatably connected to the inner wall of one side of the scraper, a thick rod is rotatably connected to the inner wall of one side of the mounting opening, a fine groove slidably connected to the movable end of the thin rod is provided on the movable end of the thick rod, and a spring is arranged between the inner wall of the fine groove and the movable end of the thin rod.

[0008] Preferably, a linear array of guide plates is fixedly connected to the inner wall of the air flotation screening bin, the guide plates are located at the notch of the exhaust port, and one end of the guide plate away from the notch of the exhaust port is higher than the other end, so that the guide plate is tilted.

[0009] Preferably, a collecting bin is provided in the body of the device, and the collecting bin is located on one side of the flotation screening bin, and the collecting bin and the flotation screening bin are interconnected through an exhaust port, an air outlet is formed on the inner wall of the collecting bin away from the exhaust port, a partition is fixedly connected to the top wall inside the collecting bin, and a filter plate is fixedly connected to the air outlet groove.

[0010] Preferably, a second material limiting bin is provided at the bottom of the device body, a second conveyor belt is rotatably connected to the inner wall of the second material limiting bin, second push rods distributed at equal distances are fixedly connected to the outer side of the second conveyor belt, the second push rods are in contact with the inner wall of the second material limiting bin, the second material limiting bin is located below the air flotation screening bin, and a third through opening is connected between the second material limiting bin and the air flotation screening bin, and a discharge port is formed at the bottom of the second material limiting bin.

[0011] Preferably, mounting plates are fixedly connected to the inner walls of the first material limiting bin and the second material limiting bin, and the first conveyor belt and the second conveyor belt are respectively sleeved on the outer sides of the two mounting plates.

[0012] Preferably, a servo motor is installed on one side of the device body, and the movable end of the servo motor is fixedly connected to the end of the active roller in the first conveyor belt. The end of the active roller in the first conveyor belt and the end of the active roller in the second conveyor belt are both fixedly sleeved with a rotating belt, and a chain is connected for transmission between the two rotating belts. The servo motor is electrically connected to the power supply. The servo motor used in this application is a purchased part, which is selected according to the power and size requirements, and this application will not go into details.

[0013] The utility model provides a millet seed air flotation screening device, which has the following beneficial effects:

[0014] 1. The millet seed flotation screening device is provided with a first conveyor belt and a first push rod on the first conveyor belt, so that the material can be spread out when the material is screened by the flotation method, thereby avoiding the problem that the lighter solids in the material are not easily blown away, thereby effectively improving the effect of the millet seed flotation screening device in screening materials.

[0015] 2. The millet seed flotation screening device is provided with a ventilation plate, which is used to ensure that the spread material can fall or roll down regularly, while reducing the falling speed of the material. Therefore, the time and efficiency of the lighter solids being removed can be fully increased, and the situation of large-area or multi-region collision and splashing of materials can be avoided. Therefore, the lighter solids are not hindered in the removal process, and the effect of the millet seed flotation screening device for screening materials is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of the utility model as a whole;

[0018] Figure 3 It is a three-dimensional schematic diagram of the cooperation between the first conveyor belt and the second conveyor belt of the utility model;

[0019] Figure 4 For this utility model Figure 1 A-section structure enlarged view.

[0020]

Main component symbol description

[0021] 1. Device body; 2. Feed bin; 3. First limiting bin; 4. Air flotation screening bin; 5. First conveyor belt; 6. First push rod; 7. Ventilation plate; 8. Fan; 9. Air inlet; 10. Guide plate; 11. Collection bin; 12. Air outlet; 13. Partition; 14. Scraper; 15. Thin rod; 16. Thick rod; 17. Second limiting bin; 18. Second conveyor belt; 19. Second push rod; 20. Servo motor. DETAILED DESCRIPTION

[0022] The embodiment of the utility model provides a millet seed air flotation screening device.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , including a device body 1, a filtering device is in contact with the bottom of the device body 1, and the device body 1 is sequentially provided with a feed bin 2, a first limiting bin 3 and an air flotation screening bin 4 which are interconnected from top to bottom, a through-type feed port is formed on the top of the feed bin 2, a first conveyor belt 5 is rotatably connected to the inner wall of the first limiting bin 3, and a first push rod 6 which is equidistantly distributed is fixedly connected to the outer side of the first conveyor belt 5, and the first push rod 6 is in contact with the inner wall of the first limiting bin 3, and an air jet screening mechanism is provided in the air flotation screening bin 4, a first through port is through-connected between the air flotation screening bin 4 and the first limiting bin 3, and an air inlet 9 and an exhaust port are respectively formed on the inner walls on both sides of the air flotation screening bin 4, and the air jet screening mechanism includes a fan 8 fixedly connected to the inner wall of the air flotation screening bin 4 and an inclined ventilation plate 7, and one side of the ventilation plate 7 is provided with air outlets which are equidistantly distributed and Through-type air holes, the top of the ventilation plate 7 is fixedly connected to the side wall of the first opening, the fan 8 is located between the ventilation plate 7 and the air inlet 9, and the fan 8 is electrically connected to the power supply. The servo motor 20 used in this application is a purchased part, which is selected according to the power and size requirements. This application will not go into details. A second opening is connected between the feed bin 2 and the first limiting bin 3. A mounting opening connected to the first limiting bin 3 is formed on the inner wall of one side of the feed bin 2. A scraper 14 is rotatably connected to the bottom wall inside the mounting opening. The bottom of the scraper 14 contacts the top of the first push rod 6 at the top. A thin rod 15 is rotatably connected to the inner wall of one side of the scraper 14. A thick rod 16 is rotatably connected to the inner wall of one side of the mounting opening. A fine groove is provided on the movable end of the thick rod 16 to be slidably connected to the movable end of the thin rod 15, and a spring is provided between the inner wall of the fine groove and the movable end of the thin rod 15.

[0024] The material is fed into the feed bin 2 from the feed port. At this time, part of the material in the feed bin 2 will be accumulated on the upper part of the first conveyor belt 5. By rotating the first conveyor belt 5, the first conveyor belt 5 uses the first push rod 6 to push part of the material along the outer periphery of the first conveyor belt 5 and pass through the first limiting bin 3, and then is fed into the air flotation screening bin 4 for screening. When the first conveyor belt 5 transports the material, the height of the first push rod 6 and the contact with the inner wall of the first limiting bin 3 are used to limit the space between two adjacent first push rods 6, so that the material is spread on the surface of the first conveyor belt 5 and the material is prevented from being stacked.

[0025] When the spread material is fed into the air flotation screening bin 4, the material will be spread out or fall in the form of a waterfall, so it is convenient to use the air flotation method to screen the lighter solids of the seeds;

[0026] The spread materials will fall along the inclined surface of the ventilation plate 7, thereby reducing the falling speed of the materials and making the materials fall regularly, without the phenomenon of large-scale stacking and falling, and without the phenomenon of large-scale or multiple collisions of materials.

[0027] When the material rolls and falls on the ventilation plate 7, the fan 8 generates wind force, and the generated airflow passes through the ventilation plate 7 and blows up the lighter solids, and at the same time, the lighter solids are discharged from the exhaust port;

[0028] The scraper 14 can scrape off the materials that are stacked too high, so that the height of the materials stacked on the first conveyor belt 5 does not exceed the height of the first push rod 6.

[0029] See also Figure 1 A linear array of guide plates 10 are fixedly connected to the inner wall of the air flotation screening bin 4. The guide plates 10 are located at the notch of the exhaust port. One end of the guide plate 10 away from the notch of the exhaust port is higher than the other end, so that the guide plate 10 is tilted;

[0030] The lighter solids will pass through the exhaust port along the gap between two adjacent guide plates 10 .

[0031] See also Figure 1 A collecting bin 11 is provided in the device body 1, and the collecting bin 11 is located on one side of the flotation screening bin 4, and the collecting bin 11 and the flotation screening bin 4 are interconnected through an exhaust port, and an air outlet 12 is formed on the inner wall of the collecting bin 11 away from the exhaust port, a partition 13 is fixedly connected to the top wall inside the collecting bin 11, and a filter plate is fixedly connected to the notch of the air outlet 12;

[0032] The lighter solids passing through the exhaust port will be collected in the collection bin 11, and the air flow will continue to be discharged from the air outlet 12, and the filter plate will be used to filter and block the lighter solids, so that the lighter solids will remain in the collection bin 11 and be collected uniformly.

[0033] See also Figure 1 and Figure 3 A second limiting material bin 17 is provided at the bottom of the device body 1, and a second conveyor belt 18 is rotatably connected to the inner wall of the second limiting material bin 17. Second push rods 19 distributed at equal distances are fixedly connected to the outer side of the second conveyor belt 18. The second push rods 19 are in contact with the inner wall of the second limiting material bin 17. The second limiting material bin 17 is located below the air flotation screening bin 4, and a third through port is connected between the second limiting material bin 17 and the air flotation screening bin 4. A discharge port is formed at the bottom of the second limiting material bin 17;

[0034] The second conveyor belt 18 is used to increase the sealing performance of the third opening, so that the large amount of airflow generated by the fan 8 can only be discharged from the exhaust port, thereby increasing the wind force and improving the effect of blowing away lighter solids;

[0035] The material rolling down the ventilation plate 7 will fall into the upper part of the second conveyor belt 18 in the second limiting bin 17 along the third opening, and then the material will be driven to move to the discharge port by the rotation of the second conveyor belt 18, and then discharged from the discharge port into the filter device for volume screening of the material. The filter device is a prior art equipment, which mainly uses the shaking of the screen to screen the large and small particles of the material, and is not described in detail in this application document.

[0036] See also Figure 1 and Figure 3 The first material limiting bin 3 and the second material limiting bin 17 are both fixedly connected with mounting plates on their inner walls, and the first conveyor belt 5 and the second conveyor belt 18 are respectively sleeved on the outer sides of the two mounting plates.

[0037] See also Figure 3 A servo motor 20 is installed on one side of the device body 1, and the movable end of the servo motor 20 is fixedly connected to the end of the active roller in the first conveyor belt 5. The end of the active roller in the first conveyor belt 5 and the end of the active roller in the second conveyor belt 18 are both fixedly sleeved with a rotating belt, and a chain is connected between the two rotating belts. The servo motor 20 is electrically connected to the power supply;

[0038] The servo motor 20 is used to drive the first conveyor belt 5 to rotate, and the first conveyor belt 5 also drives the second conveyor belt 18 to rotate together through a chain.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A millet seed air flotation screening device, comprising a device body (1), characterized in that: The device body (1) is provided with a feed bin (2), a first material limit bin (3) and an air flotation screening bin (4) which are interconnected from top to bottom. A first conveyor belt (5) is rotatably connected to the inner wall of the first material limit bin (3). First push rods (6) which are equidistantly distributed are fixedly connected to the outer side of the first conveyor belt (5). The first push rods (6) are in contact with the inner wall of the first material limit bin (3). An air jet screening mechanism is provided in the air flotation screening bin (4). A first opening is connected between the air flotation screening bin (4) and the first material limit bin (3). An air inlet (9) and an air outlet are respectively formed on the inner walls of both sides of the air flotation screening bin (4). The air jet screening mechanism comprises a fan (8) which is fixedly connected to the inner wall of the air flotation screening bin (4) and an air vent plate which is arranged obliquely. (7), the top of the ventilation plate (7) is fixedly connected to the side wall of the first opening, the fan (8) is located between the ventilation plate (7) and the air inlet (9), a second opening is connected between the feed bin (2) and the first limiting bin (3), a mounting opening connected to the first limiting bin (3) is formed on the inner wall of one side of the feed bin (2), a scraper (14) is rotatably connected to the bottom wall inside the mounting opening, the bottom of the scraper (14) contacts the top of the first push rod (6) at the top, a thin rod (15) is rotatably connected to the inner wall of one side of the scraper (14), a thick rod (16) is rotatably connected to the inner wall of one side of the mounting opening, a thin groove is provided at the movable end of the thick rod (16) and is slidably connected to the movable end of the thin rod (15), and a spring is provided between the inner wall of the thin groove and the movable end of the thin rod (15).

2. A millet seed air flotation screening device according to claim 1, characterized in that: The inner wall of the air flotation screening bin (4) is fixedly connected with material guide plates (10) distributed in a linear array, and the material guide plates (10) are located at the notch of the exhaust port.

3. A millet seed air flotation screening device according to claim 1, characterized in that: A collecting bin (11) is arranged in the device body (1), the collecting bin (11) is located on one side of the flotation screening bin (4), and the collecting bin (11) and the flotation screening bin (4) are interconnected via an exhaust port, an exhaust port (12) is formed on an inner wall of the collecting bin (11) away from the exhaust port, a partition plate (13) is fixedly connected to the top wall inside the collecting bin (11), and a filter plate is fixedly connected to the notch of the exhaust port (12).

4. A millet seed air flotation screening device according to claim 1, characterized in that: A second material limiting bin (17) is provided at the bottom of the device body (1); a second conveyor belt (18) is rotatably connected to the inner wall of the second material limiting bin (17); second push rods (19) are fixedly connected to the outer side of the second conveyor belt (18) and are distributed at equal distances; the second push rods (19) are in contact with the inner wall of the second material limiting bin (17); the second material limiting bin (17) is located below the air flotation screening bin (4); and a third opening is connected between the second material limiting bin (17) and the air flotation screening bin (4).

5. A millet seed air flotation screening device according to claim 4, characterized in that: The first material limiting bin (3) and the second material limiting bin (17) are both fixedly connected to mounting plates on their inner walls, and the first conveyor belt (5) and the second conveyor belt (18) are respectively sleeved on the outer sides of the two mounting plates.

6. A millet seed air flotation screening device according to claim 5, characterized in that: A servo motor (20) is installed on one side of the device body (1), and the movable end of the servo motor (20) is fixedly connected to the end of the active roller in the first conveyor belt (5). The end of the active roller in the first conveyor belt (5) and the end of the active roller in the second conveyor belt (18) are both fixedly sleeved with a rotating belt, and a chain is connected between the two rotating belts.

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