Multi-layer efficient grain filtering device

Abstract

The utility model discloses a multi-layer grain high-efficiency filtering device which comprises a rack, a vibrating screen, a feeding hopper, a discharging assembly, a dust collection assembly, a transmission assembly and a shell removal assembly, impurities in grains are filtered and removed through a multi-layer vibrating screen, and dust, rice hulls and the like in the impurities are absorbed at the same time. According to the utility model, the V-shaped material distributing plate is additionally arranged on the feeding hopper, so that grains can be uniformly distributed and spread when falling into the screen, and the problem of shutdown caused by screen blockage due to grain concentration is avoided; a plurality of auxiliary cleaning holes for cleaning impurities on the screen are formed in the vibrating screen and the discharging box, so that the impurities can be conveniently cleaned in time, and the filtering efficiency and the filtering quality are prevented from being influenced by blockage of the screen; the structure of the dust collection assembly and the hull removal assembly is adopted, the filtered impurities and light rice hulls can be effectively and synchronously treated, the impurities are discharged in time, dust is collected in a centralized mode, and the environment is effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of grain screening and filtration, and in particular to a multi-layer high-efficiency grain filtration device. Background Technology

[0002] During the harvesting, transportation, processing, and storage of grains, various impurities often become mixed in due to the influence of various environmental factors. Inorganic impurities in grains include dust, mud, sand, mud lumps, stones, bricks and tiles, coal slag, glass shards, and metal objects; organic impurities include plant roots, stems, leaves, and shells, weed seeds, pests and moldy grains, rodent and insect carcasses, burlap sacks, and rope ends. These impurities not only pose a significant threat to the quality of grain flour and safe production but also directly endanger human health. Before storage, grains need to be screened to remove impurities, filtering out most of them.

[0003] The existing technology can be referenced in Chinese Patent Publication No. CN216655319U, which discloses a filter screen for grain processing, including a collection box with a first screen plate inside. A discharge pipe is installed on the lower surface of the collection box, and an adjustment mechanism is provided inside the discharge pipe. The adjustment mechanism includes an adjustment plate horizontally disposed inside the discharge pipe. However, the filter screen still has shortcomings in use. First, when grain arrives at the screen plate all at once, it easily accumulates and may even clog the screen holes, affecting the smoothness of screening. Second, the screen plate cannot be shaken during screening, which not only affects screening efficiency but also requires manual intervention to move the grain, which is time-consuming, labor-intensive, and ineffective. Third, the dust generated during the screening process cannot be effectively treated. 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-layer high-efficiency grain filtration device.

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

[0006] This utility model discloses a multi-layer high-efficiency grain filtration device, including a frame. A vibrating screen is mounted on one side of the upper end of the frame via a support frame. The bottom end of the vibrating screen is set in an inclined state. A feed hopper is connected to the upper side of the vibrating screen. A discharge component is connected to the lower side of the vibrating screen. A dust collection component is connected to the end of the discharge component. A transmission component is provided below the dust collection component. A shell removal component is connected to one side of the dust collection component. Both the dust collection component and the shell removal component are fixed on the frame.

[0007] As a preferred technical solution of this utility model, the vibrating screen includes a square outer shell, a vibrating motor fixed on both sides of the square outer shell, multiple layers of screens for screening and filtering impurities inside the square outer shell, multiple first auxiliary cleaning holes for cleaning impurities on the top surface and side walls of the square outer shell, and multiple buffer pads connected to the frame on the side of the vibrating screen.

[0008] As a preferred technical solution of this utility model, the outlet below the feed hopper is located above the screen, the side of the feed hopper is fixed to one side of the upper part of the frame by a bracket, the feed hopper is provided with a V-shaped baffle for buffering the impact of the grain waterfall, and the top of the feed hopper is connected to the end of the external grain conveyor belt.

[0009] As a preferred embodiment of this utility model, the discharge assembly includes a discharge box, the top surface of which is provided with a plurality of second auxiliary cleaning holes for cleaning impurities, the two side walls of which are provided with first impurity discharge outlets, which are connected to the ends of the screens located in the upper and middle layers, the two sides of the bottom of the discharge box are provided with second impurity discharge outlets, which are connected to the lower side of the screen located in the bottom layer, and the bottom side of the discharge box is provided with a grain output port, which is connected to the upper side of the screen located in the bottom layer.

[0010] As a preferred embodiment of this utility model, the dust collection assembly includes an air volume regulating box connected to the discharge assembly. A cyclone dust collector is provided above the air volume regulating box, and a grain discharge port is provided at the bottom of the dust collection assembly. The grain discharge port is connected to the transmission assembly below. An air volume regulating valve for adjusting the air intake volume is provided on the side of the air volume regulating box. An air volume regulating plate for adjusting the air intake volume is provided inside the air volume regulating box. The outlet on the side of the cyclone dust collector is connected to the shell removal assembly.

[0011] As a preferred embodiment of the present invention, the transmission component includes a horizontally arranged transmission belt, a first motor is provided on one side of the transmission belt, the transmission component is located below the frame, and the transmission belt is V-shaped.

[0012] As a preferred technical solution of this utility model, the shell removal assembly includes a square sedimentator, with several longitudinally connected pipes arranged in a cross pattern connected below the square sedimentator. A shell outlet pipe is connected below the longitudinally connected pipes, and a rotating shaft is coaxially arranged inside the shell outlet pipe. Spiral blades are welded onto the rotating shaft, and a pulley is connected to one end of the rotating shaft. A second motor is connected to the pulley via a belt. A dust outlet is provided on one side above the square sedimentator, and a rice husk outlet is provided at the other end of the shell outlet pipe. The dust outlet is Z-shaped.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. A V-shaped material distribution plate structure was added to the feed hopper, which allows the grain to be evenly distributed when it falls into the screen, avoiding the problem of screen blockage caused by concentrated grain and resulting machine shutdown.

[0015] 2. The vibrating screen and discharge box are equipped with multiple auxiliary cleaning holes and automatic impurity discharge holes for cleaning impurities on the screen. This facilitates timely cleaning of larger impurities on the screen, such as plant roots, stems, mud, stones, etc., thereby preventing the screen from being clogged by impurities and affecting the filtration efficiency and filtration quality, thus achieving high-efficiency filtration of grain.

[0016] 3. The structure of the dust collection component and the shell removal component can effectively process large impurities such as plant roots and stems and small impurities such as light rice husks simultaneously, remove impurities in a timely manner and collect dust in a centralized manner, effectively protecting the environment. 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 a side view of the present invention;

[0022] Figure 5 This is a front view of the shell removal component in this utility model;

[0023] Figure 6 This is a cross-sectional structural diagram of the shell removal component in this utility model;

[0024] In the diagram: 1. Frame; 2. Vibrating screen; 3. Feed hopper; 4. Discharge assembly; 5. Dust collection assembly; 6. Conveying assembly; 7. Shell removal assembly; 11. Square outer shell; 12. Vibrating motor; 13. Screen; 14. First auxiliary cleaning hole; 15. Buffer pad; 16. V-shaped baffle; 21. Discharge box; 22. Second auxiliary cleaning hole; 23. First impurity discharge port; 24. Second impurity discharge port; 25. Grain outlet; 31. Air volume regulating box; 32. Cyclone dust collector; 33. Grain outlet; 34. Air volume regulating valve; 35. Air volume regulating plate; 41. Conveyor belt; 42. First motor; 51. Square sedimentator; 52. Longitudinal connecting pipe; 53. Shell discharge pipe; 54. Rotating shaft; 55. Spiral blade; 56. Pulley; 57. Second motor; 58. Dust outlet; 59. Rice husk outlet. 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 Figure 1-6 As shown, this utility model provides a multi-layer high-efficiency grain filtration device, including a frame 1. A vibrating screen 2 is detachably mounted on one side of the upper end of the frame 1 via a support frame, and the bottom end of the vibrating screen 2 is set in an inclined state. A feed hopper 3 is connected to the upper side of the vibrating screen 2, and the feed hopper 3 is fixedly connected to the frame 1 via a bracket. A discharge component 4 is connected to the lower side of the vibrating screen 2, and a dust suction component 5 for removing impurities such as rice husks and dust from the grain is connected to the end of the discharge component 4. A transmission component 6 for outputting filtered grain is provided below the dust suction component 5. A dehulling component 7 for separating rice husks and dust from impurities is connected to one side of the dust suction component 5. Both the dust suction component 5 and the dehulling component 7 are fixed to the frame 1 by bolts. This utility model, through the design of multi-layer screens 13 and auxiliary impurity removal holes, achieves multi-layer high-efficiency filtration of impurities in grain, while the dust suction component 5 and the dehulling component 7 centrally collect and process impurities and dust, avoiding environmental pollution.

[0028] The method of using this utility model is as follows:

[0029] 1. Unfiltered grain is conveyed to the top of the feed hopper 3 via an external grain conveyor belt. The grain falls onto the V-shaped baffle 16 on the feed hopper 3 under gravity and is then evenly distributed onto the multi-layer screen 13 of the vibrating screen 2 after being diverted.

[0030] 2. After being screened by screen 13, the grain flows into the discharge assembly 4 after being filtered by the bottom screen 13. The impurities in the grain are discharged through the first impurity discharge port 23 and the second impurity discharge port 24 on the discharge box 21. The impurities remaining on the screen 13 are manually removed through the first auxiliary cleaning hole 14 and the second auxiliary cleaning hole 22. The filtered grain is transported to the air volume regulating box 31 through the grain output port 25. Light rice husks and dust in the grain are absorbed by the cyclone dust collector 32 on the dust collection assembly 5. The grain after dust collection falls from the grain output port 33 onto the conveyor belt 41, and then is transported to the external warehouse or container through the conveyor belt 41.

[0031] 3. Light rice husks and dust in the grain are absorbed by the cyclone dust collector 32 and enter the square sedimentation tank 51 on the husk removal component. Under the action of gravity, the light impurities such as rice husks fall into the husk discharge pipe 53 through the longitudinal connecting pipe 53. Then, under the thrust of the spiral blades 55, they are discharged from the rice husk outlet 59. The floating dust is discharged through the dust outlet 58 and then collected by the external vacuum cleaner.

[0032] Furthermore, the vibrating screen 2 includes a square outer shell 11, with vibrating motors 12 fixed to both sides of the square outer shell 11 by bolts. In this embodiment, the vibrating motors 12 on both sides are connected together by a connecting shaft to synchronously drive the vibrating screen 2 to vibrate up and down periodically. The square outer shell 11 is provided with multiple layers of screens 13 for screening and filtering impurities. In this embodiment, the screens 13 are provided in three layers, with the screen hole diameter gradually decreasing from top to bottom. The screens 13 in the upper and middle layers are used to filter impurities with larger diameters or lengths in the grain, while the screens 13 in the lower layer are used to filter smaller particle impurities such as sand and gravel in the grain. Multiple auxiliary cleaning holes 14 are provided on the top surface and side walls of the square outer casing 11 for cleaning impurities on the screen 13. The first auxiliary cleaning holes 14 on the top surface are located above the top layer screen 13 and are used to clean impurities on the top layer screen 13. The first auxiliary cleaning holes 14 on the two sides are used to clean impurities on the middle layer screen 13. When impurities on the screen 13 accumulate over a period of time, they can be cleaned in time through the first auxiliary cleaning holes 14 to prevent impurities from clogging the mesh of the screen 13, thereby improving the screening efficiency and screening quality. Multiple buffer pads 15 are provided on the side of the vibrating screen 2 and connected to the frame 1. A support frame is provided below the buffer pads 15 and connected to the frame 1. The buffer pads 15 are used to support the vibrating screen 2 to vibrate up and down periodically in accordance with the vibration motor 12.

[0033] Furthermore, the outlet below the feed hopper 3 is located above the screen 13 on the upper layer. The side of the feed hopper 3 is fixed to the upper side of the frame 1 by a bracket. A V-shaped baffle 16 for buffering the impact of the grain waterfall is installed inside the feed hopper 3. The upper part of the feed hopper 3 is connected to the end of the external grain conveyor belt. The V-shaped baffle 16 is directly opposite the end of the conveyor belt. When the grain enters the feed hopper 3 from the external grain conveyor belt (not shown), the V-shaped baffle 16 can block the grain waterfall and spread it evenly in the feed hopper 3, avoiding the problem of the screen 13 being blocked by the concentrated grain, thus preventing the machine from stopping.

[0034] Furthermore, the discharge assembly 4 includes a discharge box 21. The top surface of the discharge box 21 has several second auxiliary cleaning holes 22 for cleaning impurities. Preferably, the second auxiliary cleaning holes 22 are connected to the bottom ends of the upper and middle layer screens 13, respectively. A cover plate is connected to the outside of the second auxiliary cleaning holes 22 via a hinge. When it is necessary to clean larger impurities on the top and middle layer screens 13, the cover plate can be manually opened to clean the impurities from the second auxiliary cleaning holes 22. First impurity discharge outlets 23 are provided on both side walls of the discharge box 21. The first impurity discharge outlets 23 are connected to the ends of the upper and middle layer screens 13. Impurities on the upper and middle layer screens 13 are automatically discharged from the first impurity discharge outlets 23 as the vibrating screen 2 vibrates. Second impurity discharge outlets 24 are provided on both sides of the bottom of the discharge box 21. The second impurity discharge outlets 24 are connected to the lower side of the bottom layer screen 13. When the vibrating screen 2 vibrates, small particles such as sand and gravel filtered out are automatically discharged from the second impurity discharge outlets 24. A grain outlet 25 is provided on one side of the bottom of the discharge box 21. The grain outlet 25 is connected to the upper side of the bottom screen 13. After being filtered by multiple screens 13, the grain is conveyed from the grain outlet 25 to the dust collection component 5 located at the rear under the vibration of the vibrating screen 2. In this way, efficient filtration of grain is achieved.

[0035] Furthermore, the dust collection assembly 5 includes an airflow regulating box 31 connected to the discharge assembly 4. A cyclone dust collector 32 is installed above the airflow regulating box 31. The cyclone dust collector 32 generates negative pressure suction to absorb light rice husks and dust impurities in the grain, further filtering and cleaning the grain. The dust collection assembly 5 has a grain discharge port 33 at the bottom, which is connected to the transmission assembly 6 below. An airflow regulating valve 34 for adjusting the airflow is installed on the side of the airflow regulating box 31. An airflow regulating plate 35 for adjusting the airflow is installed inside the airflow regulating box 31. The outlet on the side of the cyclone dust collector 32 is connected to the hulling assembly 7, which pushes the absorbed light rice husks and dust impurities into the hulling assembly 7, thereby achieving the separation of light impurities and dust in the grain.

[0036] Furthermore, the transmission component 6 includes a horizontally arranged transmission belt 41, with a first motor 42 on one side of the transmission belt 41. The first motor 42 drives the transmission belt 41 to rotate, which is used to transport the filtered and screened grain to an external grain silo or storage device (not shown). The transmission component 6 is welded to the bottom of the frame 1 by a bracket. The transmission belt 41 is V-shaped, and the top of the transmission belt 41 is directly opposite the grain outlet 33 at the bottom of the dust collection component 5, which is used to transport the filtered grain.

[0037] Furthermore, the dehulling component 7 includes a square sedimentation tank 51, which is a sealed cavity. The heavier rice hulls fall naturally under the influence of gravity, while the lighter dust is pushed out horizontally by the horizontal airflow generated by the cyclone dust collector 32. In this way, the separation of the heavier rice hulls and the lighter dust is achieved. A square sedimentation tank 51 is connected to several intersecting longitudinal connecting pipes 52. Below each longitudinal connecting pipe 52 is a hull outlet pipe 53. The longitudinal connecting pipes 52 transport the light rice hulls separated from the square sedimentation tank 51 downwards into the hull outlet pipe 53. A rotating shaft 54 ​​is coaxially mounted inside the hull outlet pipe 53, with spiral blades 55 welded onto it. One end of the rotating shaft 54 ​​is connected to a pulley 56, which is connected to a second motor 57 via a belt. The other end of the hull outlet pipe 53 has a rice hull outlet 59. Driven by the second motor 57, the rotating shaft 54 ​​drives the spiral blades 55 to rotate, thereby squeezing the rice hulls in the hull outlet pipe 53 and discharging them from the rice hull outlet 59. A dust outlet 58 is located on one side above the square sedimentation tank 51. The dust outlet 58 is Z-shaped. After passing through the square sedimentation tank 51, dust is discharged from the dust outlet 58 and then collected and processed by an external vacuum cleaner (not shown).

[0038] This utility model is a multi-layer high-efficiency grain filtration device. By setting multiple auxiliary cleaning holes on the vibrating screen 2 and the discharge box 21 for cleaning impurities on the screen 13, it is easy to clean impurities in a timely manner, thereby preventing screen blockage from affecting filtration efficiency and filtration quality. At the same time, by adopting the design of the dust suction component 5 and the hull removal component 7, the filtered impurities and light rice husks can be effectively processed simultaneously, and the rice husks and other impurities can be discharged in a timely manner and the dust can be collected in a centralized manner, effectively protecting the environment.

[0039] 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-layer high-efficiency grain filtration device, comprising a frame (1), characterized in that, A vibrating screen (2) is mounted on one side of the upper end of the frame (1) via a support frame. The bottom end of the vibrating screen (2) is set to an inclined state. A feed hopper (3) is connected to the upper side of the vibrating screen (2). A discharge assembly (4) is connected to the lower side of the vibrating screen (2). A dust collection assembly (5) is connected to the end of the discharge assembly (4). A transmission assembly (6) is provided below the dust collection assembly (5). A shell removal assembly (7) is connected to one side of the dust collection assembly (5). Both the dust collection assembly (5) and the shell removal assembly (7) are fixed on the frame (1).

2. The multi-layer high-efficiency grain filtration device according to claim 1, characterized in that, The vibrating screen (2) includes a square outer shell (11), with a vibrating motor (12) fixed on both sides of the square outer shell (11). The square outer shell (11) has multiple layers of screens (13) for screening and filtering impurities. The top surface and side walls of the square outer shell (11) have multiple first auxiliary cleaning holes (14) for cleaning impurities. The vibrating screen (2) has multiple buffer pads (15) on its side that are connected to the frame (1).

3. The multi-layer high-efficiency grain filtration device according to claim 2, characterized in that, The outlet below the feed hopper (3) is located above the screen (13). The side of the feed hopper (3) is fixed to the upper side of the frame (1) by a bracket. A V-shaped baffle (16) for buffering the impact of the grain waterfall is provided inside the feed hopper (3). The upper part of the feed hopper (3) is connected to the end of the external grain conveyor belt.

4. The multi-layer high-efficiency grain filtration device according to claim 2, characterized in that, The discharge assembly (4) includes a discharge box (21). The top surface of the discharge box (21) is provided with a plurality of second auxiliary cleaning holes (22) for cleaning impurities. The two side walls of the discharge box (21) are provided with first impurity discharge outlets (23). The first impurity discharge outlets (23) are connected to the ends of the screens (13) located in the upper and middle layers. The two sides of the bottom of the discharge box (21) are provided with second impurity discharge outlets (24). The second impurity discharge outlets (24) are connected to the lower side of the screens (13) located in the bottom layer. The bottom side of the discharge box (21) is provided with a grain output port (25). The grain output port (25) is connected to the upper side of the screens (13) located in the bottom layer.

5. A multi-layer high-efficiency grain filtration device according to claim 1, characterized in that, The dust collection assembly (5) includes an air volume regulating box (31) connected to the discharge assembly (4). A cyclone dust collector (32) is provided above the air volume regulating box (31). A grain discharge port (33) is provided at the bottom of the dust collection assembly (5). The grain discharge port (33) is connected to the transmission assembly (6) below. An air volume regulating valve (34) for adjusting the air intake is provided on the side of the air volume regulating box (31). An air volume regulating plate (35) for adjusting the air intake is provided inside the air volume regulating box (31). The outlet on the side of the cyclone dust collector (32) is connected to the shell removal assembly (7).

6. The multi-layer high-efficiency grain filtration device according to claim 1, characterized in that, The transmission component (6) includes a horizontally arranged transmission belt (41), a first motor (42) is provided on one side of the transmission belt (41), the transmission component (6) is located below the frame (1), and the transmission belt (41) is V-shaped.

7. A multi-layer high-efficiency grain filtration device according to claim 1, characterized in that, The shell removal assembly (7) includes a square sedimentation tank (51), with several longitudinally connected pipes (52) arranged in a cross pattern below the square sedimentation tank (51). A shell discharge pipe (53) is connected below the longitudinally connected pipes (52). A rotating shaft (54) is coaxially arranged inside the shell discharge pipe (53). A spiral blade (55) is welded on the rotating shaft (54). A pulley (56) is connected to one end of the rotating shaft (54). A second motor (57) is connected to the pulley (56) via a belt. A dust outlet (58) is provided on one side above the square sedimentation tank (51). A rice husk outlet (59) is provided at the other end of the shell discharge pipe (53). The dust outlet (58) is Z-shaped.

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