Grain screening and dust removing device

Abstract

A grain screening and dust removing device, including box, be provided with the baffle for separating its inside into first chamber and second chamber in box, be provided with first filter screen in first chamber inside tilt, be provided with discharge gate on one side of first chamber, be provided with feeding hopper that communicates with its inside on top of first chamber, be provided with dust removal port that communicates first chamber and second chamber on baffle, be provided with fan on one side of first chamber, the air outlet of fan is opposite to dust removal port, be provided with storage frame that slides in second chamber, be provided with second filter screen on the bottom of storage frame. It is favorable to the recovery of shriveled grain and bran, avoids the waste of material.

Description

Technical Field

[0001] This utility model relates to the field of grain processing technology, specifically to a grain screening and dust removal device. Background Technology

[0002] During the harvesting, drying, transportation, and storage processes, grains inevitably become contaminated with dust and impurities. Screening and dust removal is a crucial step in post-harvest grain processing, with the core objective of comprehensively ensuring the quality, safety, processing efficiency, and subsequent utilization value of grains by removing impurities and dust.

[0003] For example, patent document CN222931280U, entitled "Grain Screening Mechanism for Grain Screening Machine," includes a housing with a screening assembly fixedly connected to its surface. The screening assembly includes multiple support plates, multiple support springs, multiple screening boxes, a motor, and a cam. A discharge port is provided on the surface of the housing. Two fans are fixedly connected to the inner wall of the housing, and multiple ventilation holes are fixedly connected to the side of the housing. A dust removal port is fixedly connected to the other side of the housing, with a connecting ring on its side. A dust removal filter bag is fixedly connected to the surface of the connecting ring. Limiting components are provided on the upper and lower surfaces of the dust removal port. By incorporating fans, it is convenient to blow air through the grain falling from the discharge port. Under the action of the airflow, lighter and smaller impurities such as dust, chaff, and bran in the grain are easily blown into the dust removal filter bag through the dust removal port.

[0004] However, in the processing procedure described in the aforementioned patent documents, dust, chaff, and bran mixed in with the grain are blown into a dust collector filter bag for centralized processing under the action of wind. This method cannot effectively separate chaff, bran, and dust, resulting in the failure to properly recover chaff and bran that originally had reuse value, thus wasting resources. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a grain screening and dust removal device to solve the technical problem mentioned in the background art where shriveled grains and bran, which originally had reuse value, were not properly recycled, resulting in a waste of resources.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A grain screening and dust removal device includes a housing. A partition is fixedly installed inside the housing to separate the interior into a first chamber and a second chamber. A first filter screen is inclinedly installed inside the first chamber. A discharge port is opened on one side of the first chamber. A feed hopper communicating with the interior is installed on the top of the first chamber. A dust removal port communicating with the first chamber and the second chamber is opened on the partition. A fan is fixedly installed on one side of the first chamber. The air outlet of the fan is arranged opposite to the dust removal port. A storage frame is slidably installed inside the second chamber. A second filter screen is installed at the bottom of the storage frame.

[0008] Furthermore, the housing is equipped with a vibration assembly for driving the first filter screen to vibrate.

[0009] Furthermore, the vibration assembly includes a motor mounted on the housing and a first elastic component mounted in the first chamber. The first elastic component is connected to the first filter screen. The output shaft of the motor extends into the first chamber and is fixedly mounted with a first cam. The first cam slides in engagement with the bottom of the first filter screen.

[0010] Furthermore, the first elastic component includes a fixed block fixedly disposed on the inner wall of the first chamber and a sliding rod slidably disposed on the fixed block. The bottom of the sliding rod is connected to the first filter screen, and a connecting plate is fixedly disposed on the top of the sliding rod. A spring is fixedly disposed between the connecting plate and the fixed block.

[0011] Furthermore, a second elastic component is provided inside the storage frame, the second elastic component is connected to the second filter screen, a connecting shaft is rotatably provided inside the second chamber, a second cam is fixedly provided at one end of the connecting shaft, the second cam is slidably engaged with the bottom of the second filter screen, and a transmission component for driving the connecting shaft to rotate is provided on the box body.

[0012] Furthermore, the transmission assembly includes a first pulley fixedly mounted on the connecting shaft and a second pulley fixedly mounted on the motor output shaft, with a transmission belt fitted onto the second pulley and the first pulley.

[0013] Furthermore, a baffle for controlling the opening and closing of the feed hopper is slidably provided at the bottom.

[0014] The beneficial effects of this utility model are as follows:

[0015] Because the air outlet of the blower and the dust removal outlet are arranged opposite each other, and a storage frame is slidably installed in the second chamber, with a second filter screen installed at the bottom of the storage frame, when the blower is started, the grain enters the first chamber through the feed hopper. Under the action of the wind, the shriveled grains, bran, and dust mixed in the grain are carried by the airflow and introduced into the second chamber through the dust removal outlet. Then, the second filter screen filters out the dust entrained in the shriveled grains and bran, so that the shriveled grains and bran are retained on the upper surface of the second filter screen. Then, by pulling out the storage frame, the second filter screen is detached from the second chamber, which is conducive to the recycling of shriveled grains and bran and avoids material waste. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a perspective view of the present invention from another angle.

[0019] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Partition; 12. First chamber; 121. First dust collection frame; 13. Second chamber; 131. Second dust collection frame; 2. Feed hopper; 21. Baffle; 3. Fan; 31. Fan hood; 4. Discharge port; 5. First filter screen; 6. First elastic component; 61. Fixing block; 62. Sliding rod; 63. Spring; 64. Connecting plate; 7. Second elastic component; 8. Motor; 81. Support plate; 82. First cam; 9. Connecting shaft; 91. Second cam; 92. Second pulley; 93. First pulley; 94. Transmission belt; 10. Storage frame; 101. Second filter screen. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-3As shown, a grain screening and dust removal device includes a housing 1. A partition 11 is vertically fixed inside the housing 1 to separate its interior into a first chamber 12 and a second chamber 13. A first filter screen 5, arranged at an angle, is slidably installed inside the first chamber 12 to filter impurities mixed in with the grain. A discharge port 4 is located on the right side of the first chamber 12, with its bottom lower than the bottom of the first filter screen 5 to facilitate grain discharge. A feed hopper 2, communicating with the interior of the first chamber 12, is installed at the top. The top of the feed hopper 2 gradually expands outward along its edge to facilitate grain entry into the first chamber 12. An installation opening is located at the bottom of the first chamber 12, within which a first dust collection frame 121 is slidably installed. A dust removal port connecting the first chamber 12 and the second chamber 13 is provided on the partition 11. A fan 3 is fixedly installed on one side of the first chamber 12. The air outlet of the fan 3 extends into the interior of the first chamber 12 and is fixedly installed with a fan hood 31. The air outlet direction of the fan hood 31 is opposite to the dust removal port, which facilitates the concentration of air force to blow the shriveled grains, bran, and dust in the grain into the second chamber 13 through the dust removal port. A first opening is provided on the left side of the second chamber 13. A storage frame 10 is slidably installed in the first opening. A second filter screen 101 is installed at the bottom of the storage frame 10. A second opening is also provided at the bottom left side of the second chamber 13. A second dust collection frame 131 is slidably installed in the second opening.

[0022] The blower 3 is started, and the grain enters the first chamber 12 through the feed hopper 2. Under the action of the wind, the chaff, bran, and dust mixed in the grain are carried by the airflow and introduced into the second chamber 13 through the dust removal port. Then, the second filter screen 101 filters out the dust entrained in the chaff and bran, so that the chaff and bran remain on the upper surface of the second filter screen 101, while the dust settles into the second dust collection frame 131 at the bottom of the second chamber 13, thus separating the chaff, bran, and dust. Then, by pulling the storage frame 10, the second filter screen 101 is detached from the second chamber 13, which facilitates the recovery of chaff and bran and avoids material waste.

[0023] The bottom of the feed hopper 2 is slidably equipped with a baffle 21 for controlling its opening and closing. By pulling the baffle 21, the flow rate of the grain into the first chamber 12 can be flexibly adjusted, thereby improving the removal effect of shriveled grains, bran and dust in the grain.

[0024] A vibration assembly for driving the first filter screen 5 to vibrate is installed on the housing 1. The vibration assembly includes a motor 8 mounted on the housing 1 and two sets of first elastic components 6, one on the left and one on the right, installed in the first chamber 12, with two first elastic components 6 in each set. The first elastic components 6 are connected to the first filter screen 5. A support plate 81 is fixedly installed on the housing 1, and the motor 8 is fixedly installed on the support plate 81. The output shaft of the motor 8 extends into the first chamber 12 and is fixedly installed with a first cam 82, which slides in engagement with the bottom of the first filter screen 5. When the motor 8 is started, the motor 8 drives the first cam 82 to rotate. During the rotation of the first cam 82, it works in conjunction with the first elastic components 6 to drive the first filter screen 5 to vibrate, thereby accelerating the screening of grain and causing impurities in the grain that have not been blown away by the wind to fall into the first dust collection frame 121 at the bottom of the first chamber 12.

[0025] The first elastic component 6 includes a fixed block 61 fixedly installed on the inner wall of the first chamber 12 and a sliding rod 62 slidably installed on the fixed block 61. The sliding rod 62 is vertically arranged, and its bottom is fixedly connected to the first filter screen 5. A connecting plate 64 is fixedly installed on the top of the sliding rod 62. A spring 63 is fixedly installed between the connecting plate 64 and the fixed block 61. One end of the spring 63 is fixedly connected to the connecting plate 64, and the other end of the spring 63 is fixedly connected to the fixed block 61. When the first cam 82 pushes the first filter screen 5 upward, the first filter screen 5 drives the sliding rod 62 upward, the sliding rod 62 drives the connecting plate 64 upward, and the connecting plate 64 stretches the spring 63, thereby causing the first filter screen 5 to vibrate under the action of the spring 63's restoring force and the first cam 82.

[0026] Two second elastic components 7 are installed one after the other inside the storage box 10. The second elastic components 7 have the same structure as the first elastic component 6. The second elastic components 7 are fixedly connected to the second filter screen 101. A connecting shaft 9 is rotatably installed inside the second chamber 13. A second cam 91 is fixedly sleeved on one end of the connecting shaft 9. The second cam 91 slides with the bottom of the second filter screen 101. A transmission assembly for driving the connecting shaft 9 to rotate is installed on the housing 1. The transmission assembly includes a first pulley 93 fixedly installed on the connecting shaft 9 and a second pulley 92 fixedly installed on the output shaft of the motor 8. A transmission belt 94 is sleeved on the outer periphery of the second pulley 92 and the first pulley 93. The motor 8 drives the second pulley 92 to rotate. The second pulley 92 drives the first pulley 93 to rotate through the transmission belt 94. The first pulley 93 drives the second cam 91 to rotate through the connecting shaft 9. During the rotation, the second cam 91, in conjunction with the second elastic components 7, drives the second filter screen 101 to vibrate, thereby improving the efficiency of filtering empty grains and bran.

[0027] Working principle:

[0028] In use, the blower 3 is started, allowing the grain to enter the first chamber 12 through the feed hopper 2. Under the action of the airflow, the shriveled grains, bran, and dust mixed in the grain are carried by the airflow and introduced into the second chamber 13 through the dust removal port, falling onto the second filter screen 101. Then, the second filter screen 101 filters out the dust carried in the shriveled grains and bran, so that the shriveled grains and bran remain on the upper surface of the second filter screen 101, while the dust settles into the second dust collection frame 131 at the bottom of the second chamber 13.

[0029] After the grain falls onto the first filter screen 5, the motor 8 is simultaneously activated. The motor 8 drives the first cam 82 to rotate. When the first cam 82 pushes the bottom of the first filter screen 5 upward, the first filter screen 5 drives the sliding rod 62 to move upward. The sliding rod 62 drives the connecting plate 64 to move upward, and the connecting plate 64 stretches the spring 63. Thus, under the restoring force of the spring 63 and the action of the first cam 82, the first filter screen 5 vibrates. This speeds up the screening of the grain, causing impurities in the grain that have not been blown away by the wind to fall into the first dust collection frame 121 at the bottom of the first chamber 12.

[0030] At the same time, the motor 8 drives the second pulley 92 to rotate, and the second pulley 92 drives the first pulley 93 to rotate through the transmission belt 94. The first pulley 93 drives the second cam 91 to rotate through the connecting shaft 9. During the rotation, the second cam 91, together with the second elastic component 7, drives the second filter screen 101 to vibrate, thereby improving the efficiency of filtering empty grains and bran.

[0031] Pulling the storage frame 10 outwards can cause the second filter screen 101 to be pulled out of the second chamber 13, which is beneficial for the recycling of empty grains and husks and avoids resource waste. At the same time, the first dust collection frame 121 and the second dust collection frame 131 can be pulled out of the first chamber 12 and the second chamber 13 respectively, which is convenient for the treatment of dust and impurities.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A grain screening and dust removal device, comprising a housing (1), characterized in that, The box (1) is fixedly provided with a partition (11) for separating its interior into a first chamber (12) and a second chamber (13). A first filter screen (5) is inclinedly provided in the first chamber (12). A discharge port (4) is opened on one side of the first chamber (12). A feed hopper (2) communicating with the interior is provided on the top of the first chamber (12). A dust removal port communicating with the first chamber (12) and the second chamber (13) is opened on the partition (11). A fan (3) is fixedly provided on one side of the first chamber (12). The air outlet of the fan (3) is arranged opposite to the dust removal port. A storage frame (10) is slidably provided in the second chamber (13). A second filter screen (101) is provided at the bottom of the storage frame (10).

2. The grain screening and dust removal device according to claim 1, characterized in that, The housing (1) is provided with a vibration component for driving the first filter screen (5) to vibrate.

3. The grain screening and dust removal device according to claim 2, characterized in that, The vibration assembly includes a motor (8) mounted on the housing (1) and a first elastic component (6) mounted in the first chamber (12). The first elastic component (6) is connected to the first filter screen (5). The output shaft of the motor (8) extends into the first chamber (12) and is fixedly mounted with a first cam (82). The first cam (82) slides with the bottom of the first filter screen (5).

4. The grain screening and dust removal device according to claim 3, characterized in that, The first elastic component (6) includes a fixed block (61) fixedly disposed on the inner wall of the first chamber (12) and a sliding rod (62) slidably disposed on the fixed block (61). The bottom of the sliding rod (62) is connected to the first filter screen (5), and a connecting plate (64) is fixedly disposed on the top of the sliding rod (62). A spring (63) is fixedly disposed between the connecting plate (64) and the fixed block (61).

5. The grain screening and dust removal device according to claim 3, characterized in that, The storage box (10) is provided with a second elastic component (7), which is connected to the second filter screen (101). A connecting shaft (9) is rotatably provided in the second chamber (13). A second cam (91) is fixedly provided at one end of the connecting shaft (9). The second cam (91) slides with the bottom of the second filter screen (101). A transmission component for driving the connecting shaft (9) to rotate is provided on the box body (1).

6. The grain screening and dust removal device according to claim 5, characterized in that, The transmission assembly includes a first pulley (93) fixedly mounted on the connecting shaft (9) and a second pulley (92) fixedly mounted on the output shaft of the motor (8). A transmission belt (94) is fitted on the second pulley (92) and the first pulley (93).

7. The grain screening and dust removal device according to claim 1, characterized in that, The bottom of the feed hopper (2) is slidably provided with a baffle (21) for controlling its opening and closing.

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