Grain dust removal equipment and dust removal methods

Abstract

This invention discloses a grain dust removal device and method. The device includes a housing, inside which a dust removal unit is installed. The dust removal unit includes a fan assembly, a conveying assembly, and a pipeline assembly. The conveying assembly includes a first guide plate, a second guide plate, and a conveyor belt. A mesh screen is installed on the top of the first and second guide plates, and a first inclined plate is installed at the bottom of the first and second guide plates. A second inclined plate is installed at the end of the conveyor belt. The device utilizes a single airflow to lift and transport sesame seeds and impurities, removing stones from the sesame seeds. After the airflow is diverted and dusted, the wind force decreases, resulting in a smaller "buoyancy," which blows away impurities while leaving the sesame seeds. The device utilizes the different "buoyancy" generated by the decreasing single airflow to achieve dust and impurity removal for the relatively small sesame seeds.

Description

Technical Field

[0001] This invention belongs to the field of grain processing technology, and particularly relates to grain dust removal devices and dust removal methods for grain dust removal devices. Background Technology

[0002] Grains have been an indispensable part of the Chinese diet for thousands of years. Sesame is a type of grain and one of our commonly consumed foods. Because sesame seeds on the same plant mature at different rates, they are mostly harvested manually and threshed by threshing. After sifting, the harvested sesame seeds still contain some impurities (dried sesame leaves and capsule fragments). Sesame seeds harvested by machine also contain other impurities (weed leaves and stems). After drying, they can be stored in warehouses.

[0003] During the drying process, dust, stones, or other impurities may appear inside the sesame seeds. Because sesame seeds are different from other grains and fruits, they are relatively small in weight. Under current technology, conventional wind-floating methods are not easy to remove stones, impurities, and dust from the sesame seeds. Summary of the Invention

[0004] This invention addresses the problem that conventional air flotation methods are unsuitable for dust and impurity removal in sesame processing, and proposes the following technical solution:

[0005] A grain dust removal device includes a housing with an inlet and an outlet. A dust removal device is installed inside the housing, and the dust removal device includes a fan assembly, a conveying assembly, and a pipeline assembly.

[0006] A fan assembly consists of multiple fans arranged side by side.

[0007] The conveying assembly includes a first guide plate, a second guide plate, and a conveyor belt. The first guide plate and the second guide plate form a wind channel. An isolation net is provided on the top of the first guide plate and the second guide plate. A first inclined plate is provided at the bottom of the first guide plate and the second guide plate. A second inclined plate is provided at the end of the conveyor belt. The surfaces of the first inclined plate and the second inclined plate are each provided with a plurality of through holes smaller than sesame seeds.

[0008] The duct assembly includes an air outlet duct and an air blower duct, with a square flexible tube provided between the air outlet duct and the air blower duct, and a dustproof bag provided at the end of the air blower duct;

[0009] The blower assembly operates by blowing air in direction A, which transports the sesame seeds and impurities that have fallen onto the first inclined plate along the air channel. The remaining stones fall down the first inclined plate to the bottom of the box. The airflow in the air channel generates negative pressure, which allows outside air to enter from the feed inlet and suck away the diffused dust. The pipe assembly allows most of the airflow to continue to be used and uses a dust bag to block and collect the dust. The main airflow weakens but still blows away the impurities in the sesame seeds that have been transported to the second inclined plate in direction A. The remaining sesame seeds are discharged from the discharge outlet for collection. By utilizing the difference in "buoyancy" generated by the decrease in the strength of a single airflow, stones, dust and impurities in the sesame seeds are removed, thus achieving the function of dust removal and impurity removal for the sesame seeds.

[0010] As a preferred embodiment of the above technical solution, the dust removal device further includes a ejection assembly, which includes an ejection plate and a rodless cylinder. The rodless cylinder drives the ejection plate to reciprocate, and the movement of the ejection plate ejects impurities that have not been completely blown out of the box.

[0011] As a preferred embodiment of the above technical solution, the ejection assembly further includes an isolation section, which includes a baffle plate and multiple flip nets. Each end of the flip net is provided with a rotating part that is rotatably inserted into the baffle plate. A spur gear is provided on the surface of the rotating part at one end of the flip net. The tops of the multiple spur gears are meshed with the same movable rack. The movement of the movable rack drives the multiple spur gears to rotate, causing the flip net to close the middle of the baffle plate.

[0012] As a preferred embodiment of the above technical solution, a shrink block is movably inserted into one end of the movable rack, and a first spring is fixedly connected between the shrink block and the movable rack.

[0013] As a preferred embodiment of the above technical solution, both sides of the shrink block are provided with anti-slip rubber layers, and the surface of the anti-slip rubber layer of the shrink block is attached to the surface of the baffle plate to fix the moving rack by friction.

[0014] As a preferred embodiment of the above technical solution, the box body is provided with an anti-blocking component at the isolation net position. The anti-blocking component includes a one-way cylinder and a cleaning rod. A moving block is provided at the output end of the one-way cylinder. One end of the cleaning rod is movably inserted into the moving block, and a second spring is fixedly connected between one end of the cleaning rod and the moving block. Moving wheels are provided at both ends of the cleaning rod, and a limit rod is provided on one side of the moving wheel.

[0015] As a preferred embodiment of the above technical solution, one end of the limiting rod is bent, and the bent end of the limiting rod is hinged to the main body of the limiting rod.

[0016] The dust removal method of a grain dust collector includes the following steps:

[0017] S1. The blower assembly blows air in direction a. Sesame seeds and impurities that fall on the first inclined plate are transported along the wind channel. The remaining stones fall to the bottom of the box along the first inclined plate. The airflow in the wind channel generates negative pressure, which allows external air to enter from the feed inlet and suck away the diffused dust.

[0018] S2. Most of the airflow enters the air outlet duct. With the deflection of the square flexible hose, the airflow re-enters the housing from the air outlet duct. The dust bag blocks and collects the dust in the airflow passing through the end of the air outlet duct.

[0019] S3. A small portion of the airflow moves the sesame seeds and impurities along the isolation net, and they fall onto the surface of the conveyor belt under the action of gravity. The conveyor belt then transports them to the second inclined plate.

[0020] S4. The airflow from the blower pipe blows away the impurities in the sesame seeds on the second inclined plate, and the remaining sesame seeds are discharged from the outlet for collection.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The device uses a single stream of airflow to blow up and transport sesame seeds and impurities, removing stones from the sesame seeds. After the airflow is split and dust is removed, the wind force is reduced, and the corresponding "buoyancy" is reduced, thus blowing out the impurities and leaving the sesame seeds. The device uses the difference in "buoyancy" generated by the decrease of the single stream of airflow to achieve dust and impurity removal for sesame seeds with small weight.

[0023] 2. The rodless cylinder drives the ejector plate to move back and forth quickly. The ejector plate pushes out impurities that cannot be completely blown out of the box. As the ejector plate moves, multiple flipping nets close the middle of the blocking plate, preventing the ejector plate from pushing the impurities back. At the same time, the flipping nets close and open in a short time, so they will not block the impurities from being blown out.

[0024] 3. The anti-clogging component can push impurities away from the surface of the isolation net, preventing impurities from adhering to the surface of the isolation net and blocking it, thus preventing the main wind force airflow intensity from decreasing too much. When the anti-clogging component is reset, it detaches from the surface of the isolation net to prevent impurities from being pushed back. Attached Figure Description

[0025] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment;

[0026] Figure 2 The view shown is a front sectional view of an embodiment;

[0027] Figure 3 The image shown is the main view of the ejection component in the embodiment;

[0028] Figure 4The image shown is a right sectional view of the ejection component in the embodiment;

[0029] Figure 5 The diagram shown illustrates the installation location of the anti-clogging component in the embodiment.

[0030] Figure 6 The image shown is a front view of the anti-clogging component in the embodiment.

[0031] In the diagram: 10. Box body; 11. Feed inlet; 12. Discharge outlet; 21. Fan; 31. First guide plate; 32. Second guide plate; 33. Conveyor belt; 34. Isolation net; 35. First inclined plate; 36. Second inclined plate; 41. Air outlet pipe; 42. Air blowing pipe; 43. Dust bag; 50. Push-out assembly; 51. Push-out plate; 52. Rodless cylinder; 61. Baffle plate; 62. Tilting net; 63. Spur gear; 64. Moving rack; 71. Shrink block; 72. First spring; 80. Anti-clogging assembly; 81. One-way cylinder; 82. Cleaning rod; 83. Moving block; 84. Second spring; 85. Moving wheel; 86. Limit rod. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0033] Example

[0034] Figures 1-2 The grain dust removal device includes a housing 10, which is provided with an inlet 11 and an outlet 12. The dust removal device is installed inside the housing 10, and the dust removal device includes a fan assembly, a conveying assembly and a pipeline assembly.

[0035] The fan assembly consists of multiple fans 21 arranged side by side;

[0036] The conveying assembly includes a first guide plate 31, a second guide plate 32, and a conveyor belt 33. The first guide plate 31 and the second guide plate 32 form a wind channel. An isolation net 34 is provided on the top of the first guide plate 31 and the second guide plate 32. A first inclined plate 35 is provided at the bottom of the first guide plate 31 and the second guide plate 32. A second inclined plate 36 is provided at the end of the conveyor belt 33. The surfaces of the first inclined plate 35 and the second inclined plate 36 are each provided with a plurality of through holes smaller than sesame seeds.

[0037] The duct assembly includes an air outlet duct 41 and an air blower duct 42, with a square flexible tube provided between the air outlet duct 41 and the air blower duct 42, and a dustproof bag 43 provided at the end of the air blower duct 42.

[0038] The blower assembly operates by blowing air in the direction of A, which transports the sesame seeds and impurities that fall on the first inclined plate 35 along the wind channel. The remaining stones fall down the first inclined plate 35 to the bottom of the box 10. The airflow in the wind channel generates negative pressure, which allows external air to enter from the feed inlet 11 and suck away the diffused dust. The pipe assembly allows most of the airflow to continue to be used and uses the dust bag 43 to block and collect the dust. The main airflow weakens but still blows away the impurities in the sesame seeds that are transported to the second inclined plate 36 in the direction of A. The remaining sesame seeds are discharged from the discharge outlet 12 for collection. By utilizing the difference in "buoyancy" generated by the decrease in the single wind force, the stones, dust and impurities in the sesame seeds are removed, so as to achieve the function of dust removal and impurity removal of sesame seeds at the same time.

[0039] An external conveying device transports sesame seeds to the top of the inlet 11. Under gravity, the sesame seeds fall onto the first inclined plate 35 along the surface of the inlet 11 and the first guide plate 31. Multiple fans 21 in the fan assembly work simultaneously to blow air towards the bottom of the first inclined plate 35 in direction a. The airflow blows the sesame seeds and impurities up through the through holes in the first inclined plate 35 and transports them along the airflow channel formed between the first guide plate 31 and the second guide plate 32. Stones that are not blown up fall down the first inclined plate 35 to the bottom of the box 10. The airflow in the airflow channel creates a negative pressure inside, and external air enters from the inlet 11 to suck away the diffused dust, preventing dust pollution of the working environment during sesame seed transport. After the sesame seeds and impurities are separated by the isolation net 34, the airflow begins to split, making the main airflow... As the airflow intensity decreases, a small portion of the airflow carries sesame seeds and impurities away from the airflow channel, causing them to fall onto the surface of the conveyor belt 33. Under the transmission of the conveyor belt 33, the sesame seeds and impurities fall onto the second inclined plate 36. The lighter impurities (sesame leaves, weed leaves) are directly blown away from the box 10, while most of the airflow enters the outlet pipe 41 and then enters the blowing pipe 42 through the square hose. The dust bag 43 blocks and collects the dust in the passing airflow, further reducing the intensity of the airflow. The main airflow re-enters the box 10 and blows towards the bottom of the second inclined plate 36. Because the intensity of the main airflow is reduced, it cannot blow the sesame seeds up. The heavier impurities (capsule fragments, weed stems) leave the box 10 with the airflow, and the remaining sesame seeds are discharged from the outlet 12 for collection.

[0040] The device uses a single stream of airflow to lift and transport sesame seeds and impurities, removing stones from the sesame seeds. After the airflow is diverted and dust is removed, the wind force is reduced, and the corresponding "buoyancy" is reduced, thus blowing out the impurities and leaving the sesame seeds. The device uses the difference in "buoyancy" generated by the decrease in the single stream of airflow to achieve dust and impurity removal for sesame seeds with smaller weight.

[0041] The dust removal method of this grain dust removal device includes the following steps.

[0042] S1. The blower assembly blows air in the direction of a. Sesame seeds and impurities that fall on the first inclined plate 35 are transported along the wind channel. The remaining stones fall along the first inclined plate 35 to the bottom of the box 10. The airflow in the wind channel generates negative pressure, which allows external air to enter from the feed inlet 11 and suck away the diffused dust.

[0043] S2. Most of the airflow enters the air outlet duct 41. Under the direction of the square hose, the airflow re-enters the housing 10 from the blower duct 42. The dust bag 43 blocks and collects the dust in the airflow passing through the end of the blower duct 42.

[0044] S3. A small portion of the airflow moves the sesame seeds and impurities along the isolation net 34, and they fall onto the surface of the conveyor belt 33 under the action of gravity. The conveyor belt 33 then transports them to the second inclined plate 36.

[0045] S4. The airflow from the blower pipe 42 blows away the impurities in the sesame seeds on the second inclined plate 36, and the remaining sesame seeds are discharged from the discharge port 12 for collection.

[0046] In the dust removal method of this grain dust removal device, the decreasing wind and airflow are utilized. When the wind and airflow are strong, sesame seeds and impurities are lifted and transported, and stones inside the sesame seeds are removed. When the wind and airflow weakens, only impurities can be removed from the sesame seeds, thereby removing dust and impurities from the smaller sesame seeds.

[0047] Figures 3-4 The dust removal device further includes a ejection assembly 50, which includes an ejection plate 51 and a rodless cylinder 52. The rodless cylinder 52 drives the ejection plate 51 to reciprocate. The movement of the ejection plate 51 ejects impurities that have not been completely blown out of the housing 10.

[0048] The ejection assembly 50 also includes an isolation section, which includes a baffle plate 61 and a plurality of flip nets 62. Both ends of the flip nets 62 are provided with rotating parts that are rotatably inserted into the baffle plate 61. A spur gear 63 is provided on the surface of the rotating part at one end of the flip nets 62. The tops of the plurality of spur gears 63 are meshed with the same movable rack 64. The movement of the movable rack 64 drives the plurality of spur gears 63 to rotate, so that the flip nets 62 close the middle of the baffle plate 61.

[0049] When the airflow blows out impurities, the rodless cylinder 52 is activated, driving the ejector plate 51 to move back and forth rapidly. When the ejector plate 51 moves towards the outside of the housing 10, the moving rack 64 moves accordingly, rotating multiple spur gears 63. The corresponding flipping net 62 then closes the middle of the blocking plate 61. The ejector plate 51 then passes over the multiple flipping nets 62 and pushes out the impurities that were blown out and were inside the housing 10. Then the rodless cylinder 52 drives the ejector plate 51 to return quickly. The flipping net 62 remains closed to prevent the ejector plate 51 from pushing the impurities back. The moving rack 64 then resets, resetting the multiple flipping nets 62. The impurities can then continue to leave the housing 10 through the middle of the blocking plate 61.

[0050] The rodless cylinder 52 drives the ejector plate 51 to move back and forth quickly. The ejector plate 51 ejects impurities that cannot be completely blown out of the box 10. Meanwhile, multiple flipping nets 62 close the middle of the blocking plate 61 as the ejector plate 51 moves, preventing the ejector plate 51 from pushing the impurities back. At the same time, the flipping nets 62 close and open in a short time, so they do not block the blowing out of impurities.

[0051] Figure 4 In the process, a retractable block 71 is movably inserted into one end of the movable rack 64, and a first spring 72 is fixedly connected between the retractable block 71 and the movable rack 64.

[0052] Both sides of the shrink block 71 are provided with anti-slip rubber layers, and the surface of the anti-slip rubber layer of the shrink block 71 is attached to the surface of the baffle plate 61 to rub and fix the moving rack 64.

[0053] When the ejector plate 51 moves outward from the housing 10, the shrink block 71 moves along with the ejector plate 51, causing the moving rack 64 to move. When the moving rack 64 moves to its maximum distance, the shrink block 71 is squeezed and retracted into the moving rack 64, and the first spring 72 is compressed and deformed. After the ejector plate 51 leaves the position of the shrink block 71, the first spring 72 resets and drives the shrink block 71 to reset. During the return process of the ejector plate 51, the shrink block 71 moves along with the ejector plate 51, resetting the moving rack 64, and after being squeezed and retracted, it waits for the next work to begin. The anti-slip rubber layer on the surface of the shrink block 71 adheres to the moving rack 64, rubbing and fixing the moving rack 64, making the two states of the flipping net 62 more stable.

[0054] The shrink block 71 can move and reset the moving rack 64 by moving the push plate 51. At the same time, after the moving rack 64 moves to the maximum distance, the shrink block 71 will automatically shrink to avoid the shrink block 71 from obstructing the normal reciprocating movement of the push plate 51.

[0055] Figures 5-6In the middle, the box 10 is provided with an anti-blocking component 80 at the isolation net 34 position. The anti-blocking component 80 includes a one-way cylinder 81 and a cleaning rod 82. The output end of the one-way cylinder 81 is provided with a moving block 83. One end of the cleaning rod 82 is movably inserted into the moving block 83, and a second spring 84 is fixedly connected between one end of the cleaning rod 82 and the moving block 83. Both ends of the cleaning rod 82 are provided with moving wheels 85, and a limit rod 86 is provided on one side of the moving wheel 85.

[0056] The limiting rod 86 is bent at one end, and the bent end of the limiting rod 86 is hinged to the main body of the limiting rod 86.

[0057] When sesame seeds and impurities pass through the isolation net 34, the one-way cylinder 81 is activated and drives the moving block 83 to move back and forth. The movement of the moving block 83 causes the cleaning rod 82 to push the impurities away from the surface of the isolation net 34. During the movement of the cleaning rod 82, the moving wheel 85 pushes the curved end of the limit rod 86 to deflect it. The limit rod 86 will not block the moving wheel 85 and the cleaning rod 82. When the moving block 83 drives the cleaning rod 82 back, the moving wheel 85 moves along the surface of the limit rod 86 and moves the cleaning rod 82. The cleaning rod 82 then leaves the surface of the isolation net 34, and the second spring 84 is stretched and deformed. When the moving block 83 returns to its original position, the moving wheel 85 disengages from the limit rod 86, allowing the cleaning rod 82 to re-adhere to the surface of the isolation net 34, and the cleaning rod 82 can continue the next cleaning operation.

[0058] The anti-clogging component 80 can push impurities away from the surface of the isolation net 34, preventing impurities from adhering to the surface of the isolation net 34 and clogging it, thus preventing the main wind force airflow intensity from decreasing too much. When resetting, the anti-clogging component 80 detaches from the surface of the isolation net 34 to prevent impurities from being pushed back in the opposite direction.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A grain dust removal device, comprising a housing (10), the housing (10) being provided with an inlet (11) and an outlet (12), characterized in that, The housing (10) is equipped with a dust removal device, which includes a fan assembly, a conveying assembly and a pipeline assembly; The fan assembly consists of multiple fans (21) arranged side by side; The conveying assembly includes a first guide plate (31), a second guide plate (32), and a conveyor belt (33). The first guide plate (31) and the second guide plate (32) form a wind channel. An isolation net (34) is provided on the top of the first guide plate (31) and the second guide plate (32). A first inclined plate (35) is provided at the bottom of the first guide plate (31) and the second guide plate (32). A second inclined plate (36) is provided at the end of the conveyor belt (33). The surfaces of the first inclined plate (35) and the second inclined plate (36) are each provided with a number of through holes smaller than sesame seeds. The duct assembly includes an air outlet duct (41) and a blower duct (42), with a square flexible tube provided between the air outlet duct (41) and the blower duct (42), and a dustproof bag (43) provided at the end of the blower duct (42). The blower assembly blows air in the direction of a to transport the sesame seeds and impurities that fall on the first inclined plate (35) along the wind channel. The remaining stones fall along the first inclined plate (35) to the bottom of the box (10). The airflow in the wind channel generates negative pressure, which allows external air to enter from the feed port (11) and suck away the diffused dust. A small part of the split airflow moves the sesame seeds and impurities along the isolation net (34) and falls onto the surface of the conveyor belt (33) under the action of gravity. The conveyor belt (33) transports them to the second inclined plate (36). The pipe assembly allows most of the airflow to continue to be used and uses the dust bag (43) to block and collect the dust. The main airflow weakens but still blows away the impurities in the sesame seeds that are transported to the second inclined plate (36) in the direction of a. The remaining sesame seeds are discharged from the discharge port (12) for collection. By using the different "buoyancy" generated by the decrease of the single wind force, the stones, dust and impurities in the sesame seeds are removed to achieve the function of dust removal and impurity removal of sesame seeds at the same time. The dust removal device also includes a push-out assembly (50), which includes a push-out plate (51) and a rodless cylinder (52). The rodless cylinder (52) drives the push-out plate (51) to move back and forth. The movement of the push-out plate (51) pushes out impurities that have not been completely blown out of the box (10) from the box (10). The ejection assembly (50) further includes an isolation section, which includes a baffle plate (61) and multiple flip nets (62). Both ends of the flip nets (62) are provided with rotating parts that are rotatably inserted into the baffle plate (61). A spur gear (63) is provided on the surface of the rotating part at one end of the flip nets (62). The tops of the multiple spur gears (63) are meshed with the same movable rack (64). The movable rack (64) moves and drives the multiple spur gears (63) to rotate, so that the flip nets (62) close the middle of the baffle plate (61). A retractable block (71) is movably inserted into one end of the movable rack (64), and a first spring (72) is fixedly connected between the retractable block (71) and the movable rack (64).

2. The grain dust removal device according to claim 1, characterized in that, The shrink block (71) has anti-slip rubber layers on both sides. The surface of the anti-slip rubber layer of the shrink block (71) is attached to the surface of the baffle plate (61) to rub and fix the moving rack (64).

3. The grain dust removal device according to claim 1, characterized in that, The box (10) is provided with an anti-blocking component (80) at the position of the isolation net (34). The anti-blocking component (80) includes a one-way cylinder (81) and a cleaning rod (82). The output end of the one-way cylinder (81) is provided with a moving block (83). One end of the cleaning rod (82) is movably inserted into the moving block (83), and a second spring (84) is fixedly connected between one end of the cleaning rod (82) and the moving block (83). Both ends of the cleaning rod (82) are provided with moving wheels (85), and a limit rod (86) is provided on one side of the moving wheel (85).

4. The grain dust removal device according to claim 3, characterized in that, The limiting rod (86) is bent at one end, and the bent end of the limiting rod (86) is hinged to the main body of the limiting rod (86).

5. The dust removal method of the grain dust removal device according to any one of claims 1-4, characterized in that, Includes the following steps, S1. The blower assembly blows air in the direction of a. Sesame seeds and impurities that fall on the first inclined plate (35) are transported along the wind channel. The remaining stones fall along the first inclined plate (35) to the bottom of the box (10). The airflow in the wind channel generates negative pressure, which allows external air to enter from the feed inlet (11) and suck away the diffused dust. S2. Most of the airflow enters the air outlet pipe (41). Under the direction of the square hose, the airflow re-enters the box (10) from the blower pipe (42). The dust bag (43) blocks and collects the dust in the airflow passing through the end of the blower pipe (42). S3. A small portion of the airflow moves the sesame seeds and impurities along the isolation net (34) and they fall onto the surface of the conveyor belt (33) under the action of gravity. The conveyor belt (33) then transports them to the second inclined plate (36). S4. The airflow from the blower pipe (42) blows away the impurities in the sesame seeds on the second inclined plate (36), and the remaining sesame seeds are discharged from the outlet (12) for collection.

Images