Multi-linkage grain dust remover

Abstract

The utility model discloses a multi-linkage grain dust remover which comprises a vehicle-mounted platform, a vibrating screen, a winnowing box, a settling box, a dust removing box and a conveying belt, according to the grain screening and impurity removing device, grains enter the vibrating screen through the feeding hopper, large impurities are discharged through the large impurity discharging pipe, heavy impurities are discharged through the heavy impurity discharging pipe, light impurities are discharged through the light impurity discharging pipe, and the rest of dust is discharged through the dust discharging hopper after being filtered and precipitated in the dust removing box, so that screening and impurity removing of the grains are completed. By means of a totally-closed multi-linkage dust removal structure, the impurity rate in grains can be reduced to 0.5% from 10%, the processing standard is met, meanwhile, the working environment is protected, and dust pollution and fire hazards are avoided; in addition, a plurality of filter bags are arranged in the dust removal box, high-pressure gas is blown back into the filter bags from the high-pressure gas blowing holes of the blowing pipes for efficient dust removal, and the dust removal efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of grain impurity removal and storage, and in particular to a multi-functional grain dust collector. Background Technology

[0002] During the harvesting, transportation, processing, and storage of grain, various impurities often become mixed in. Inorganic impurities in grain include dust, mud, sand, lumps of soil, stones, bricks, tiles, and metal objects; organic impurities include plant roots, stems, leaves, husks, and weeds. These impurities pose a significant threat to grain processing and storage. Therefore, grain needs to be cleaned of impurities before entering the warehouse. This not only benefits grain storage but also provides raw materials that meet the required standards for subsequent production and processing. In grain storage facilities, the convenience, efficiency, and environmental friendliness of storage equipment are receiving increasing attention, making grain dust collectors an important pre-treatment device before grain enters the warehouse.

[0003] Currently, grain impurities in grain storage are generally handled using mobile conveyors and mobile cleaning screens. The impurity removal process mostly involves vibration, screening, and conveying. Because it's an open operation, the entire storage area is filled with flying dust and light impurities, resulting in a severely dusty working environment that pollutes the environment, harms the respiratory health of operators, significantly impacts the surrounding environment, and poses a serious fire hazard. Furthermore, the existing dust collectors have inadequate cleaning structures. Direct airflow doesn't thoroughly clean the flat cloth cylinders, leading to excessive dust accumulation and affecting filtration efficiency. High-pressure air cleaning of the filter cartridges is uneven and ineffective, and the water and oil contained in the compressed high-pressure air blown directly into the filter cartridges can damage the equipment, affecting filtration efficiency and equipment lifespan. There is an urgent market need for a highly efficient and safe grain dust collector that combines fine grain screening, impurity removal, and dust removal functions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a multi-linked grain dust collector.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a multi-functional grain dust collector, comprising a vehicle-mounted platform and a vibrating screen installed at an angle on the platform. The vibrating screen filters larger impurities from the grain. An air separator is connected to the lower end of the vibrating screen to extract lighter impurities from the grain. A settling box for settling lighter impurities is connected to one side of the air separator. A dust collector is connected to one side of the settling box via a pipe. Dust collector fans are connected to both sides of the outer end of the dust collector via ducts for air extraction and filtration of the air entering the dust collector. A conveyor belt for transporting grain is also installed at the bottom of the air separator. The vibrating screen has a multi-layered mesh structure for screening and removing impurities from the grain. Large impurity discharge pipes are located on both sides of the vibrating screen, through which larger impurities filtered by the vibrating screen are discharged. Heavy impurity discharge pipes are located on both sides of the lower end of the vibrating screen. Heavier impurities filtered by the vibrating screen are discharged through the heavy impurity discharge pipe. The lower middle part of the vibrating screen is connected to the air separator box via the first grain discharge hopper. The air separator box is connected to the first grain discharge hopper via a vertical air duct to filter the grain again. A second grain discharge hopper is provided at the bottom of the air separator box, through which the grain that has been filtered again falls onto the conveyor belt. An air separator is provided at the top of the air separator box to collect lighter impurities from the grain. A light impurity conveying pipe for collecting light impurities is provided below the settling tank. A partition is fixed inside the dust collector box, and filter bags are evenly fixed on the partition. An air nozzle is provided inside the dust collector box and above the filter bags. A dust discharge hopper for collecting dust is fixed at the bottom of the dust collector box. An exhaust box is installed on the top of the two dust collector fans to discharge the gas purified by the dust collector box.

[0007] As a preferred technical solution of this utility model, the vehicle platform is connected to a front roller and a rear roller by a bracket at the lower left and right corners. The front roller is connected to a steering wheel by a rotating shaft, and the rear roller is connected to a power source by a drive motor to drive the vehicle platform to move. Several positioning posts for fixing the vehicle platform are also provided on both sides of the vehicle platform.

[0008] As a preferred technical solution of this utility model, a vibrating motor is fixedly installed at the middle position of both sides of the vibrating screen, and a control box is fixedly installed on one side of the vehicle platform. The control box is electrically connected to the power supply, and both vibrating motors are electrically connected to the control box. The vibrating screen is equipped with multiple layers of screens inside for screening large impurities of different sizes in the grain. A feed hopper is connected to the top of the vibrating screen for receiving the grain to be cleaned.

[0009] As a preferred technical solution of this utility model, the bottom of the light impurity conveying pipe is connected to a light impurity discharge pipe for collecting light impurities, and a propulsion auger is installed in the light impurity discharge pipe for pushing the light impurities to one side of the vehicle platform for discharge.

[0010] As a preferred embodiment of this utility model, the air nozzle is connected to a compressed air tank via a gas pipeline, and an electromagnetic pulse valve is provided in the middle of the gas pipeline to control the air nozzle to provide pulsed vibration airflow to the filter bag, thereby impacting and vibrating to remove the dust left on the outer surface of the filter bag.

[0011] As a preferred embodiment of this utility model, the dust collection box is divided into a filtration chamber and an air intake chamber by the partition. The filtration chamber and the air intake chamber are connected by the filter bag. The outer ends of the air intake chamber are connected to the dust collection fan through air ducts to draw away air and form a negative pressure.

[0012] As a preferred embodiment of this utility model, the two dust removal fans are respectively connected to a dust removal motor for driving the dust removal fans to rotate via a rotating shaft, and the base of the dust removal motor is fixed above the vehicle platform.

[0013] As a preferred embodiment of this utility model, the conveyor belt is fixed to the lower part of the vehicle platform, and the conveyor belt is driven by a transmission motor. The transmission motor is electrically connected to the power supply and is used to transport the filtered and impurity-removed grain to an external storage box.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Grain enters the vibrating screen through the feed hopper. Larger impurities filtered out are discharged through the large impurity discharge pipe, while heavier impurities are discharged through the heavy impurity discharge pipe. Lighter impurities are then sucked away by the air separator. Clean grain is conveyed out via a conveyor belt. Lighter impurities continue to settle in the settling tank and are discharged through the light impurity discharge pipe. The remaining dust is sucked into the dust collector by the dust collector motor, filtered, settled, and then discharged through the dust discharge hopper. This process completes the screening, impurity removal, and dust removal of the grain. Through the multi-linked vibrating screening structure, the impurity content in the grain can be reduced from 10% to 0.5%, meeting processing standards. At the same time, the fully enclosed dust removal linkage structure protects the working environment and avoids dust pollution and fire hazards.

[0016] 2. A closed channel is formed between the filtration chamber and the intake chamber, separated by filter bags. Air nozzles are installed on the filter bags, and high-pressure gas is directly supplied by a compressed air tank. The high-pressure pulse airflow is generated by the control of an electromagnetic pulse valve and blown into the filter bags. At the moment of high-speed airflow injection, each filter bag can achieve the same expansion and shaking effect. The high pressure and stable pulse of the blowing airflow are easy to control, thus avoiding the phenomenon of large expansion and shaking amplitude in the middle and small expansion and shaking amplitude on both sides, resulting in uneven cleaning effect. This also avoids filter pore blockage and improves filtration and dust removal efficiency. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 This is the left view of this utility model;

[0022] Figure 5 This is the right view of this utility model;

[0023] Figure 6 This is a cross-sectional structural schematic diagram of the present invention;

[0024] In the diagram: 1. Vehicle-mounted platform; 2. Vibrating screen; 3. Air separator; 4. Settling box; 5. Dust collector; 6. Dust collector fan; 7. Conveyor belt; 11. Front roller; 12. Rear roller; 13. Steering wheel; 14. Power supply; 15. Positioning stake; 16. Control box; 21. Heavy waste discharge pipe; 22. Heavy waste discharge pipe; 23. First grain discharge hopper; 24. Vibrating motor; 25. Feed hopper; 31. Second grain discharge hopper; 32. Air separator; 41. Light waste conveying pipe; 42. Light waste discharge pipe; 51. Baffle plate; 52. Filter bag; 53. Air nozzle; 54. Dust discharge hopper; 55. Compressed air tank; 56. Electromagnetic pulse valve; 57. Filter chamber; 58. Suction chamber; 61. Exhaust box; 62. Dust collector motor; 71. Conveyor motor. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] In the attached diagram, all identical reference numerals refer to the same components.

[0027] like Figures 1-6 As shown, this utility model provides a multi-link grain dust collector, including a vehicle platform 1 and a vibrating screen 2 installed on the vehicle platform 1 at an incline. The vibrating screen 2 is used to filter larger impurities in the grain.

[0028] The lower end of the vibrating screen 2 is connected to an air separator 3, which is used to extract and filter lighter impurities from the grain.

[0029] One side of the air classifier 3 is connected to a settling box 4 for settling light impurities;

[0030] A dust collection box 5 is connected to one side of the settling box 4 via a pipe;

[0031] Dust collector 5 has dust collector fans 6 connected to the outer sides of the dust collector 5 via air ducts for air extraction and filtration of the air entering the dust collector 5.

[0032] The bottom of the air separator 3 is also equipped with a conveyor belt 7 for transporting grain;

[0033] The vibrating screen 2 has a multi-layer screen structure inside to screen and remove impurities from the grain. Large impurities discharge pipes 21 are provided on both sides of the vibrating screen 2. Larger impurities filtered by the vibrating screen 2 are discharged through the large impurities discharge pipes 21. Heavy impurities discharge pipes 22 are provided on both sides of the lower end of the vibrating screen 2. Heavier impurities filtered by the vibrating screen 2 are discharged through the heavy impurities discharge pipes 22. The first grain discharge hopper 23 is provided in the middle of the lower end of the vibrating screen 2 and is connected to the air separator 3.

[0034] The air separator 3 is connected to the first grain hopper 23 via a vertical air duct to screen the grain again. The bottom of the air separator 3 is equipped with a second grain hopper 31. The grain that has been filtered again falls onto the conveyor belt 7 through the second grain hopper 31. The top of the air separator 3 is equipped with an air separator 32 to collect lighter impurities in the grain. The bottom of the settling tank 4 is equipped with a light impurity conveying pipe 41 for collecting light impurities.

[0035] A partition 51 is fixed inside the dust collector 5, and filter bags 52 are evenly fixed on the partition 51. An air nozzle 53 is provided inside the dust collector 5 and above the filter bags 52. A dust discharge hopper 54 for collecting dust is fixed at the bottom of the dust collector 5.

[0036] The two dust removal fans 6 are equipped with exhaust boxes 61 on top, which are used to discharge the gas purified by the dust removal box 5.

[0037] The method of using this utility model is as follows:

[0038] 1. Grain containing impurities enters the vibrating screen 2 through the feed hopper 25. After being screened by multiple screens, the larger impurities are filtered out and discharged through the large impurity discharge pipe 21. The heavier impurities are discharged from the heavy impurity discharge pipe 22 at the bottom of the vibrating screen 2. The grain after being screened by multiple screens enters the air separation box 3 through the first grain discharge hopper 23 for air separation.

[0039] 2. In the air separator 3, the suction generated by the air separator 32 draws away the lighter impurities in the grain. The lighter impurities then continue to settle in the settling tank 4 and are collected through the light impurity conveying pipe 41 and discharged through the light impurity discharge pipe 42. The grain that has been filtered again by the air separator is discharged through the second grain outlet hopper 31 and falls onto the conveyor belt 7 and is transported to the external storage bag (not shown).

[0040] 3. After settling in settling chamber 4, the remaining lighter gas containing dust is drawn into the dust collection box by the negative pressure generated by dust collection motor 62. In filter chamber 57, after being filtered and settled by filter bag 52, the dust blocked by the filter is discharged through dust discharge hopper 54. The gas purified by filter bag 52 enters air suction chamber 58 and is finally discharged through exhaust box 61, completing the screening and dust removal of grain.

[0041] For further details, please refer to the appendix. Figure 2 The lower left and right corners of the vehicle-mounted platform 1 are connected to front rollers 11 and rear rollers 12 via brackets to support the platform's easy movement. The front rollers 11 are connected to a steering wheel 13 via a pivot, and the rear rollers 12 are connected to a power source 14 via a drive motor to drive the platform 1. Four positioning posts 15 are also provided on both sides of the platform 1 for fixing it in place. In this embodiment, the grain dust collector can be easily moved using the vehicle-mounted platform 1, and the positioning posts 15 allow the platform 1 to be positioned in various terrain locations, facilitating grain screening and impurity removal while improving the equipment's applicability.

[0042] For further details, please refer to the appendix. Figure 2 Vibration motors 24 are fixedly installed on the middle of both sides of the vibrating screen 2. A control box 16 is fixedly installed on the side of the vehicle platform 1. The control box 16 is electrically connected to the power supply 14. Both vibration motors 24 are electrically connected to the control box 16. The start and stop of the vibrating screen 2 can be controlled through the control box 16. A feed hopper 25 is connected to the top of the vibrating screen 2 to receive the grain to be filtered and impurities removed, and to form a uniform waterfall flow of grain into the vibrating screen 2.

[0043] In this embodiment, the vibrating screen 2 is equipped with multiple layers of screens, with the mesh diameter gradually decreasing from the top to the bottom, for screening impurities of different sizes in the grain. On the top and side walls of the vibrating screen 2, there are also multiple manual impurity removal holes corresponding to each layer of screens. When large impurities accumulate on the screens, they can be cleaned manually, avoiding equipment shutdown caused by impurities blocking the screens. After the grain passes through the vibrating screen 2, larger and heavier impurities are screened and separated, and discharged from the large impurity discharge pipe 21 and the heavy impurity discharge pipe 22, respectively.

[0044] For further details, please refer to the appendix. Figure 2The bottom of the light impurity conveying pipe 41 is connected to a light impurity discharge pipe 42 for collecting light impurities. A propulsion auger is installed inside the light impurity discharge pipe 42 to push the light impurities to the outlet position on one side of the vehicle platform 1 for discharge.

[0045] In this embodiment, light impurities in the grain are absorbed by the air separation box 3 and pushed into the settling box 4. Under the action of gravity and airflow, the heavier light impurities such as rice husks and grains settle and fall into the light impurity discharge pipe 42 through the light impurity conveying pipe 41. The light impurity discharge pipe 42 is externally connected to a drive motor. Under the action of the drive motor, the auger pushes the light impurities to one side of the vehicle platform 1 for collection and discharge, thereby realizing the screening and removal of light impurities. After multiple screenings, the impurity removal rate in the grain is high, and the impurity content in the grain can be reduced from 10% to 0.5%, meeting the processing standard requirements.

[0046] For further details, please refer to the appendix. Figure 6 The air nozzle 53 is connected to a compressed air tank 55 via a gas pipe. An electromagnetic pulse valve 56 is installed in the middle of the gas pipe to control the air nozzle 53 to provide pulsed airflow to the filter bag 52, causing impact vibration and dislodging of dust from the outer surface of the filter bag 52. In this embodiment, the air nozzle 53 and filter bags 52 are evenly distributed in an array inside the suction chamber 58. A high-pressure pulsed airflow is formed under the control of the electromagnetic pulse valve 56 and blown into the filter bag 52. At the moment of high-speed airflow injection, each filter bag 52 receives the same expansion and vibration effect. The high-pressure and stable pulse of the blowing airflow is easy to control, thus avoiding the phenomenon of large expansion and vibration amplitude in the middle and small expansion and vibration amplitude on both sides, resulting in uneven cleaning effect. This prevents filter bag clogging and improves filtration and dust removal efficiency.

[0047] For further details, please refer to the appendix. Figure 6 The dust collector 5 is divided into a filter chamber 57 and an air intake chamber 58 by a partition 51. The filter chamber 57 and the air intake chamber 58 are connected by a filter bag 52. The outer ends of the air intake chamber 58 are connected to the dust collector fan 6 through air ducts to draw air out of the air intake chamber 58 and create a negative pressure. This allows the dust-laden gas to pass through the filter bag 52 and enter the air intake chamber 58 from the filter chamber 57, thus achieving gas filtration. Through the closed-loop dust collection method, the working environment is protected and dust pollution and fire hazards are avoided.

[0048] For further details, please refer to the appendix. Figure 4 Two dust removal fans 6 are respectively connected to dust removal motors 62 for driving the dust removal fans 6 to rotate via rotating shafts. The base of the dust removal motors 62 is fixed above the vehicle platform 1.

[0049] For further details, please refer to the appendix. Figures 1-2The conveyor belt 7 is fixed to the bottom of the vehicle platform 1. The conveyor belt 7 is driven by the transmission motor 71, which is electrically connected to the power supply 14 to drive the conveyor belt 7 to move. One end of the conveyor belt is located below the second grain hopper 31. In this embodiment, a windproof cover plate is also provided above the conveyor belt 7 to prevent the grain from being blown off by the wind, and is used to transport the clean grain after filtration and impurity removal to the external storage box (not shown).

[0050] This utility model is a multi-linked grain dust collector, suitable for storage equipment in the grain industry. Through the multi-linked vibration screening structure, the impurity content in grain can be reduced from 10% to 0.5%, meeting the processing standard requirements. At the same time, the fully enclosed dust removal linkage structure protects the working environment and avoids dust pollution and fire hazards.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-element, interconnected grain dust collector, characterized in that, The system includes a vehicle-mounted platform (1) and a vibrating screen (2) installed at an angle on the vehicle-mounted platform (1). The vibrating screen (2) is used to filter larger impurities in the grain. The lower end of the vibrating screen (2) is connected to an air separator (3) for extracting lighter impurities from the grain. A settling box (4) for settling lighter impurities is connected to one side of the air separator (3). A dust collector (5) is connected to one side of the settling box (4) via a pipe. Dust collector fans (6) are connected to both sides of the outer end of the dust collector (5) via air ducts for exhausting air and cleaning the incoming material. The air entering the dust collector (5) is filtered; the bottom of the air separator (3) is also equipped with a conveyor belt (7) for transporting grain; the vibrating screen (2) has a multi-layer screen structure inside to screen and remove impurities from the grain; the vibrating screen (2) has large impurity discharge pipes (21) on both sides, through which larger impurities filtered by the vibrating screen (2) are discharged; the vibrating screen (2) has heavy impurity discharge pipes (22) on both sides at the lower end, through which heavier impurities filtered by the vibrating screen (2) are discharged. The heavy impurities are discharged through the discharge pipe (22). The lower middle part of the vibrating screen (2) is provided with a first grain discharge hopper (23) connected to the air separator (3). The air separator (3) is connected to the first grain discharge hopper (23) through a vertical air duct to filter the grain again. The bottom of the air separator (3) is provided with a second grain discharge hopper (31). The grain that has been filtered again falls onto the conveyor belt (7) through the second grain discharge hopper (31). The top of the air separator (3) is provided with an air separator (32) to collect lighter impurities in the grain. The sedimentation The bottom of the box (4) is provided with a light impurity conveying pipe (41) for collecting light impurities; the inner side of the dust removal box (5) is fixed with a partition (51), and filter bags (52) are evenly fixed on the partition (51). The dust removal box (5) is provided with an air pipe nozzle (53) inside and above the filter bags (52). The bottom of the dust removal box (5) is fixed with a dust discharge hopper (54) for collecting dust. The top of the two dust removal fans (6) is equipped with an exhaust box (61) for discharging the gas purified by the dust removal box (5).

2. The multi-element interconnected grain dust collector according to claim 1, characterized in that, The vehicle platform (1) is connected to a front roller (11) and a rear roller (12) by brackets at the lower left and right corners. The front roller (11) is connected to a steering wheel (13) by a rotating shaft. The rear roller (12) is connected to a power source (14) by a drive motor to drive the vehicle platform (1) to move. Several positioning stakes (15) for fixing the vehicle platform (1) are also provided on both sides of the vehicle platform (1).

3. A multi-element interconnected grain dust collector according to claim 2, characterized in that, Vibration motors (24) are fixedly installed in the middle of both sides of the vibrating screen (2). A control box (16) is fixedly installed on one side of the vehicle platform (1). The control box (16) is electrically connected to the power supply (14). Both vibration motors (24) are electrically connected to the control box (16). The vibrating screen (2) is equipped with multiple layers of screens for screening impurities of different sizes in the grain. The top of the vibrating screen (2) is connected to a feed hopper (25) for receiving the grain to be filtered and cleaned.

4. A multi-element interconnected grain dust collector according to claim 1, characterized in that, The bottom of the light impurity conveying pipe (41) is connected to a light impurity discharge pipe (42) for collecting light impurities. A propulsion auger is installed in the light impurity discharge pipe (42) to push the light impurities to one side of the vehicle platform (1) for discharge.

5. A multi-element interconnected grain dust collector according to claim 1, characterized in that, The air nozzle (53) is connected to a compressed air package (55) through a gas pipe. An electromagnetic pulse valve (56) is provided in the middle of the gas pipe to control the air nozzle (53) to provide pulse vibration airflow to the filter bag (52) to impact and vibrate and remove the dust left on the outer surface of the filter bag (52).

6. A multi-element interconnected grain dust collector according to claim 1, characterized in that, The dust collector (5) is divided into a filter chamber (57) and an air intake chamber (58) by the partition (51). The filter chamber (57) and the air intake chamber (58) are connected by the filter bag (52). The outer ends of the air intake chamber (58) are connected to the dust collector fan (6) through air ducts to draw away air and form a negative pressure.

7. A multi-element interconnected grain dust collector according to claim 1, characterized in that, The two dust removal fans (6) are respectively connected by a dust removal motor (62) for driving the dust removal fans (6) to rotate via a rotating shaft. The base of the dust removal motor (62) is fixed above the vehicle platform (1).

8. A multi-element interconnected grain dust collector according to claim 2, characterized in that, The conveyor belt (7) is fixed to the lower part of the vehicle platform (1). The conveyor belt (7) is driven by a transmission motor (71). The transmission motor (71) is electrically connected to the power supply (14) and is used to transport the filtered and impurity-removed grain to the external storage box.

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