Dustproof discharger and method for grain processing

Abstract

The invention discloses a dustproof discharger and method for grain processing, and relates to the technical field of grain conveying and dust prevention, the dustproof discharger comprises a hopper, a feeding pipe is arranged on the upper portion of the hopper, the feeding pipe is communicated with the hopper, and grains enter the hopper from the feeding pipe and are discharged from a discharging port; the cover is arranged on the outer side of the feeding pipe and connected with the feeding pipe, an elastic piece is arranged between the cover and the hopper and can be compressed, and when the compression state of the elastic piece is changed, the distance between the cover and the hopper is changed; the anti-overflow structure is located on the inner side of the cover and used for recycling dust generated in the grain conveying process, when the elastic piece changes the compression state to adjust the distance between the cover and the hopper, the anti-overflow structure synchronously adjusts the recycling state, and when the compression force of the elastic piece is increased or decreased, the dustproof state of the anti-overflow structure correspondingly changes. According to the dustproof discharger capable of being adjusted in a self-adaptive mode, self-adaptive adjustment is conducted according to the grain conveying speed and the change of the conveying amount.

Description

Technical Field

[0001] The invention relates to the technical field of dust prevention in grain transportation, and in particular to a dust discharger and method for grain processing. Background Art

[0002] A dust ejector is a device used in industrial, laboratory or other working environments to prevent dust, particles and harmful gases from escaping into the air. The main functions of a dust ejector include:

[0003] Filtration: Capture tiny particles and harmful substances in the air through high-efficiency filter materials.

[0004] Exhaust: Effectively exhausts clean air while preventing dust and contaminants from escaping.

[0005] Announcement No. CN207844546U discloses a dust discharger, which includes a buffer hopper with a discharge port at the lower end and an open upper end, and a distributor arranged in the buffer hopper and matched with the discharge port, and also includes a relatively movable dust-proof base slidably sleeved on the upper part of the buffer hopper, the dust-proof base is provided with a feed port, the distributor is connected to the dust-proof base and is arranged below the feed port, an adjustment device for adjusting the gap between the distributor and the discharge port is connected between the buffer hopper and the dust-proof base, the adjustment device includes a plurality of tension springs, and a guide device for maintaining the directional movement of the buffer hopper is arranged between the buffer hopper and the dust-proof base. The utility model seals the open upper end of the buffer hopper by sleeve-fitting a relatively movable dust-proof base on the upper part of the buffer hopper, thereby improving the overall dust-proof level, reducing the generation of dust, protecting the environment and preventing operators from being harmed by dust.

[0006] In the process of grain transportation, especially in the process of handling, storage and transportation, a lot of dust and particles are easily generated. These dusts mainly come from the following aspects:

[0007] Physical movement of grain: During the conveying, pouring and mixing process, the collision and friction of grain particles will cause some fine particles to be brought into the air.

[0008] Storage and handling: When storing and transporting grain in a granary, dust is easily formed due to the friction and collision between the grains.

[0009] The dust discharger is used in the process of grain transportation. It collects dust by taking advantage of the characteristics of dust during transportation to prevent dust from spreading at the end of transportation and affecting the production environment and operators.

[0010] However, the conveying speed and amount of grain during the conveying process will also affect the diffusion of dust. The effect of the existing dust discharger in preventing dust overflow during use cannot change according to the conveying speed and amount of grain, and cannot achieve a good dust prevention effect when the conveying speed and amount of grain are different. Summary of the invention

[0011] One of the purposes of the present invention is to provide a dust discharger and method for grain processing, which can be adaptively adjusted according to changes in the conveying volume and conveying speed during grain conveying to ensure a good dust-proof effect.

[0012] To achieve the above objectives, the present invention is implemented through the following technical solutions: A dust discharger for grain processing, comprising:

[0013] The hopper has a funnel-shaped lower end, a discharge port is arranged at the bottom, a feed pipe is arranged at the upper part of the hopper, and the feed pipe is connected with the hopper, and the grain enters the hopper through the feed pipe and is discharged from the discharge port;

[0014] A cover is arranged outside the feed pipe and connected to the feed pipe, the diameter of the cover is larger than the diameter of the hopper, and an elastic member is arranged between the cover and the hopper, and the elastic member can be compressed. When the compression state of the elastic member is changed, the distance between the cover and the hopper changes;

[0015] The anti-overflow structure is located inside the cover and is used to recover dust generated during grain transportation. When the elastic member changes the compression state to adjust the distance between the cover and the hopper, the anti-overflow structure adjusts the recovery state synchronously. When the compression force of the elastic member increases or decreases, the dust-proof state of the anti-overflow structure changes accordingly.

[0016] The distributor is located inside the hopper and connected to the cover or the hopper through a connecting rod. An arc structure is set at the drop position of the feed pipe in the distributor. The arc structure moves relative to the distributor. The position of the arc structure is changed by the impact force of the falling grains. The arc changes after the arc structure changes its position.

[0017] In one or more embodiments of the present invention, two ends of the elastic member contact the cover and the hopper respectively and are connected to the cover and the hopper. The elastic member includes at least one spring whose two ends contact the cover and the hopper respectively. When the height of the hopper changes, the spring is compressed.

[0018] In one or more embodiments of the present invention, the distributor comprises:

[0019] A conical frame is located inside the hopper and connected to the connecting rod, and the arc structure is arranged inside the conical frame, and the arc structure can move relative to the conical frame;

[0020] A buffer unit is provided at the connection position between the conical frame and the connecting rod, and the buffer unit absorbs part of the impact force of the grain impacting the arc structure;

[0021] The adjusting unit is arranged inside the conical frame. When the arc structure is impacted, the conical frame moves, and the adjusting unit changes the position and curvature of the arc structure according to the impact force.

[0022] In one or more embodiments of the present invention, the buffer unit includes:

[0023] The sleeve is hinged to the outside of the conical frame, the connecting rod extends into the sleeve, the connecting rod and the sleeve are sealed by an airtight member, the airtight member does not limit the extension and contraction of the connecting rod relative to the sleeve, and an air pipe is arranged outside the sleeve to extend into the conical frame;

[0024] The cavity is fixed inside the conical frame, the air pipe is connected to the cavity, and the cavity is elastically arranged and connected to the sleeve through the air pipe.

[0025] In one or more embodiments of the present invention, the arc structure is an arc plate, the cross section of the arc plate is triangular, and the adjustment unit includes:

[0026] An extension frame is arranged inside the conical frame and connected to the arc plate, and is used to change the curvature of the arc plate. A tripod is arranged on one side of the extension frame, and the tripod connects the inner end and the extension frame. The tripod is swingable, and the swing of the tripod changes the position and curvature of the extension frame and the arc plate.

[0027] The electromagnet is installed outside the cavity, and a magnetic plate adapted to the electromagnet is arranged inside the tripod. The electromagnet and the magnetic plate cooperate to change the swing angle of the tripod.

[0028] In one or more embodiments of the present invention, the anti-overflow structure includes:

[0029] A flexible plate, one end of which is mounted on the outside of the hopper and extends to the inner wall of the cover, a plurality of arc grooves for limiting the movement of the flexible plate are arranged on the inner side of the cover, a positioning column is arranged on the outer side of the flexible plate and extends to the inside of the arc groove and contacts the arc groove, and the spacing between the hopper and the cover changes the position of the positioning column on the inner side of the arc groove;

[0030] The recovery port is opened on the outer wall of the flexible plate and penetrates the flexible plate. A cover plate is arranged on the inner side of the recovery port to seal the recovery port. One corner of the cover plate is connected to the flexible plate through a connecting rope, and the cover plate can be swung open by a corner of the connecting rope and a corner of the adjacent connecting rope.

[0031] In one or more embodiments of the present invention, the anti-overflow structure further comprises:

[0032] The electromagnet is fixed on the inner side of the flexible plate, a spring sheet is arranged on the outer side of the electromagnet, a spherical protrusion is arranged on the side where the spring sheet contacts the cover plate, the spherical protrusion contacts the cover plate, and the electromagnet controls the position of the spring sheet;

[0033] A spring plate is fixed to the back of the flexible plate, and the spring plate is located at the position of the connecting rope to support the cover plate;

[0034] The collecting bag is installed between the cover and the hopper to recover dust. The collecting bag is installed in a ring shape and in a corrugated shape. A fan is arranged at the crest position of the collecting bag, and the fan draws air from the inside of the cover to the outside of the cover.

[0035] In one or more embodiments of the present invention, the anti-overflow structure further comprises:

[0036] The air duct is arranged inside the cover body and extends inside the feed pipe. A wind shield is arranged outside the hopper, and the wind shield is used to change the motion state of the fan exhaust;

[0037] The air outlet is arranged in the air duct and extends to the inside of the feed pipe and moves toward the conical frame.

[0038] The present application also proposes a dust-proof method for a dust-proof discharger, which is used for the dust-proof discharger of the grain processing, and comprises the following steps:

[0039] Connect the feed pipe to the conveying pipe and adjust the direction of the discharge port so that it is perpendicular to the ground;

[0040] Grains enter the hopper through the feed pipe, and the divider divides the grains to change their falling path;

[0041] The grain hits the distributor, and the arc structure inside the distributor changes its position and arc, guiding the grain to move in a parabolic trajectory.

[0042] When grain impacts the distributor, the distance between the hopper and the cover changes, driving the anti-overflow structure to change its state. When the grain impact force is small, wind force is used to assist dust movement. When the impact force is large, the recovery range of the anti-overflow structure is expanded.

[0043] In one or more embodiments of the present invention, grain falls on the distributor during its falling process. The weight of the distributor increases after the impact, and the distributor drives the hopper to move downward. The bottom of the hopper is an elastic structure that reduces the impact of grain.

[0044] Through the above technical solution, the present invention has the following beneficial effects:

[0045] 1. The present application is based on an adaptively adjustable dust discharger, which is adaptively adjusted according to changes in the speed and amount of grain transportation. The speed and amount of grain transportation correspond to different dust changes. When the dust discharger makes adaptive adjustments, it can correspond to different dust diffusion states, thereby improving the dust prevention effect during grain transportation.

[0046] 2. The dust is driven to move during the falling and conveying process of grains. However, the mass of dust and grains and the state of air flow are different. Through the adjustable arc structure, when in use, it can be changed accordingly according to the state of the arc structure, and the arc of the falling grain can be changed under different grain conveying amounts and conveying speeds.

[0047] 3. Use the impact force generated by grain during transportation to change the state of the dust discharger, obtain the changes in the grain transportation volume and speed, increase the dust prevention range of the dust discharger during high-speed grain transportation, and use a larger range to ensure the dust prevention effect. During low-volume grain transportation, adjust the dust prevention position of the dust discharger so that it can be closer to the grain transportation position to protect less dust.

[0048] 4. Through the dust discharger, during the grain transportation process, there is no need to limit the grain transportation speed, and a good dust prevention effect can be achieved through the dust discharger. The dust prevention state is adjusted according to the change of the impact force of the grain during the transportation process to achieve self-adaptation. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A perspective view of the present invention;

[0050] Figure 2 It is a cross-sectional view of the cover body and the hopper of the present invention;

[0051] Figure 3 It is a schematic diagram of a part of the flexible board structure of the present invention;

[0052] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0053] Figure 5 It is a schematic diagram of the conical frame structure of the present invention;

[0054] Figure 6 It is a cross-sectional view of the conical frame structure of the present invention;

[0055] Figure 7 It is a schematic diagram of the internal structure of the conical frame of the present invention;

[0056] Figure 8 It is a schematic diagram of the arc structure of the present invention;

[0057] Fig. 9 It is a plan view of the arc structure of the present invention;

[0058] Fig.10 A half-section plan view of the present invention;

[0059] Fig.11 It is a structural diagram of the flexible board of the present invention in an unbent state;

[0060] Fig.12 This is a diagram of the flexible board of the present invention;

[0061] Fig.13 It is a partial schematic diagram of the flexible board of the present invention;

[0062] Fig.14 It is a side view of the local structure of the flexible board of the present invention.

[0063] In the figure: 1 feed pipe, 2 cover, 3 hopper, 4 distributor, 5 discharge port, 6 anti-overflow structure, 7 elastic member, 8 connecting rod;

[0064] 41 conical frame, 42 arc structure, 43 buffer unit: 431 sleeve, 432 airtight part, 433 cavity, 434 air pipe; 44 adjustment unit: 441 extension frame, 442 tripod, 443 electromagnet, 444 magnetic plate;

[0065] 61 flexible plate, 62 arc groove, 63 positioning column, 64 recovery port, 65 cover plate, 66 connecting rope, 67 electromagnet, 68 spring piece, 69 spherical protrusion, 610 spring plate, 611 collection bag, 612 fan, 613 air duct, 614 wind shield, 615 air outlet. DETAILED DESCRIPTION

[0066] The following will disclose multiple embodiments of the present invention with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. And if it is possible to implement, the features of different embodiments can be applied interchangeably.

[0067] Unless otherwise defined, all words (including technical and scientific terms) used herein have their usual meanings, which can be understood by those familiar with this field. Furthermore, the definitions of the above words in commonly used dictionaries should be interpreted as the meanings consistent with the relevant fields of the present invention in the content of this specification. Unless otherwise clearly defined, these words will not be interpreted as idealized or overly formal meanings.

[0068] See also Figure 1-Figure 14 The present invention provides a dust discharger for grain processing, which is arranged at the grain outlet or on the grain conveying path during grain processing and conveying to recover dust generated by grain conveying and prevent dust from overflowing.

[0069] In one embodiment, the dust ejector comprises:

[0070] The hopper 3 has a funnel-shaped lower end, a discharge port 5 is arranged at the bottom, a feed pipe 1 is arranged at the upper part of the hopper 3, and the feed pipe 1 is connected to the hopper 3, and the grain enters the hopper 3 through the feed pipe 1 and is discharged from the discharge port 5;

[0071] The cover 2 is arranged outside the feed pipe 1 and connected to the feed pipe 1. The diameter of the cover 2 is larger than the diameter of the hopper 3. An elastic member 7 is arranged between the cover 2 and the hopper 3. The elastic member 7 can be compressed. When the compression state of the elastic member 7 is changed, the distance between the cover 2 and the hopper 3 is changed.

[0072] The anti-overflow structure 6 is located inside the cover 2 and is used to recover dust generated during the grain transportation process. When the elastic member 7 changes the compression state to adjust the distance between the cover 2 and the hopper 3, the anti-overflow structure 6 adjusts the recovery state synchronously. When the compression force of the elastic member 7 increases or decreases, the dust-proof state of the anti-overflow structure 6 changes accordingly.

[0073] The distributor 4 is located inside the hopper 3 and connected to the cover 2 or the hopper 3 through a connecting rod 8. An arc structure 42 is set at the drop position of the feed pipe 1 in the distributor 4. The arc structure 42 moves relative to the distributor 4. The position of the arc structure 42 is changed by the impact force of the falling grains. The curvature of the arc structure 42 changes after the position is changed.

[0074] In this embodiment, the setting of the divider 4 can change the state of the grain during the falling process. When the grain falls and contacts the arc structure 42, the inertia of the falling grain and the curvature change of the arc structure 42 cause the grain to produce parabolic motion. Since the mass of dust and grain is different, after being thrown out from the position of the arc structure 42, the falling speed of the grain is higher than the falling speed of the dust, thereby facilitating the recovery of the dust through the anti-overflow structure 6.

[0075] Since the amount of grain delivered changes during the transportation process, and the amount of delivery has different effects on dust, in order to better recover the dust, an adjustable anti-overflow structure 6 is set that can be adjusted according to the falling state of the grain so that the dust can be quickly recovered, avoiding the situation where when the grain delivery amount is small, the air flow range is small, resulting in the dust being unable to move to the anti-overflow structure 6 for recovery, and the need to increase the recovery power.

[0076] In one embodiment, two ends of the elastic member 7 respectively contact the cover 2 and the hopper 3 and are connected to the cover 2 and the hopper 3. The elastic member 7 includes at least one spring whose two ends respectively contact the cover 2 and the hopper 3. When the height of the hopper 3 changes, the spring is compressed.

[0077] Optionally, the elastic member 7 is arranged inside the cover 2. In this state, the position where the hopper 3 contacts the elastic member 7 is wrapped inside the cover 2. The positions where the cover 2 and the hopper 3 contact the elastic member 7 are both designed with countersunk holes to limit the position of the elastic member 7.

[0078] Alternatively, the elastic member 7 is disposed outside the cover 2. In this state, the elastic member 7 is at least partially exposed outside the cover 2. In addition to the spring, the elastic member 7 also includes a stud for positioning the hopper 3 on the cover 2, which is threadedly connected to the hopper 3 and inserted into the cover 2 from the middle of the spring.

[0079] In this embodiment, the elastic member 7 is arranged so as to be able to change due to impact during grain transportation. The support of the elastic member 7 can also be reset when the impact force of grain transportation becomes smaller, thereby changing the state of the anti-overflow structure 6.

[0080] In one embodiment, the distributor 4 comprises:

[0081] A conical frame 41 is located inside the hopper 3 and connected to the connecting rod 8. An arc structure 42 is disposed inside the conical frame 41. The arc structure 42 can move relative to the conical frame 41.

[0082] A buffer unit 43 is provided at the connection position between the conical frame 41 and the connecting rod 8, and the buffer unit 43 absorbs part of the impact force of the grain impacting the arc structure 42;

[0083] The adjusting unit 44 is disposed inside the conical frame 41 . When the arc structure 42 is impacted, the conical frame 41 moves, and the adjusting unit 44 changes the position and curvature of the arc structure 42 according to the impact force.

[0084] In this embodiment, the buffer unit 43 can limit the movement of the hopper 3 within a certain range, that is, when the impact force on the arc structure 42 is small, the impact force is unloaded by the buffer unit 43. In this state, the hopper 3 will not be displaced, thereby ensuring the stability of the anti-overflow structure 6. The buffer unit 43 can also prevent the anti-overflow structure 6 from being overly sensitive and frequently adjusted during the grain transportation process, thereby increasing the service life of the anti-overflow structure 6.

[0085] The arc structure 42 has two different embodiments, one of which is that the arc structure 42 is set at intervals. In this setting, the grain is diverted by the conical frame 41, so that the grain enters the inner side of the arc structure 42, and the parabolic movement of the grain is restricted by the arc structure 42. The other is a compact setting. In this state, adjusting the curvature of the arc structure 42 will change the overall curvature of the grain landing point, and there is no need to divert the grain through the conical frame 41.

[0086] In one embodiment, the buffer unit 43 includes:

[0087] The sleeve 431 is hinged to the outside of the conical frame 41, and the connecting rod 8 extends into the inside of the sleeve 431. The connecting rod 8 and the sleeve 431 are sealed by an airtight member 432. The airtight member 432 does not limit the extension and contraction of the connecting rod 8 relative to the sleeve 431. An air pipe 434 is arranged outside the sleeve 431 and extends into the inside of the conical frame 41.

[0088] The cavity 433 is fixed inside the conical frame 41 , and the air pipe 434 is connected to the cavity 433 . The cavity 433 is elastically arranged and communicated with the sleeve 431 through the air pipe 434 .

[0089] In this embodiment, the cavity 433 is set to be elastic. When the buffer rack moves due to the impact of grain, the buffer rack can move downward, the gas inside the sleeve 431 is compressed, and the gas enters the cavity 433 through the air pipe 434, causing the cavity 433 to expand. The pressure inside the cavity 433 changes, and when the impact force decreases, the gas inside the cavity 433 returns to the sleeve 431.

[0090] In one embodiment, the arc structure 42 is an arc plate, the cross section of the arc plate is triangular, and the adjustment unit 44 includes:

[0091] The extension frame 441 is arranged inside the conical frame 41 and connected to the arc plate, and is used to change the curvature of the arc plate. A tripod frame 442 is arranged on one side of the extension frame 441, and the tripod frame 442 connects the inner end and the extension frame 441. The tripod frame 442 is swingable, and the tripod frame 442 swings to change the position and curvature of the extension frame 441 and the arc plate;

[0092] The electromagnet 443 is installed outside the cavity 433 , and a magnetic plate 444 adapted to the electromagnet 443 is arranged inside the tripod 442 . The electromagnet 443 and the magnetic plate 444 cooperate to change the swing angle of the tripod 442 .

[0093] In this embodiment, one end of the tripod 442 is hinged to the conical frame 41. After the tripod 442 swings, the movement distances of the inside and outside are different. Therefore, the extension frame 441 is installed on the outside of the tripod 442. After the tripod 442 swings, the movement distances of the two ends of the arc plate are inconsistent, thereby changing the angle of the arc plate.

[0094] The arc plate is a thin steel plate structure with elasticity and is installed by stacking in sequence. The inner side of the arc plate is inserted into the conical frame 41 and is restricted by the conical frame 41. The thickness of the position where the electromagnet 443 is installed in the cavity 433 is less than the average thickness of the cavity 433. When the cavity 433 is squeezed, the position of the electromagnetic strip will change.

[0095] In one embodiment, the anti-overflow structure 6 includes:

[0096] A flexible plate 61, one end of which is mounted on the outside of the hopper 3 and extends to the inner wall of the cover 2, a plurality of arc grooves 62 for limiting the movement of the flexible plate 61 are arranged on the inner side of the cover 2, a positioning column 63 is arranged on the outer side of the flexible plate 61, which extends to the inside of the arc groove 62 and contacts the arc groove 62, and the spacing between the hopper 3 and the cover 2 changes the position of the positioning column 63 on the inner side of the arc groove 62;

[0097] The recovery port 64 is opened on the outer wall of the flexible plate 61 and penetrates the flexible plate 61. A cover plate 65 is arranged on the inner side of the recovery port 64 to seal the recovery port 64. One corner of the cover plate 65 is connected to the flexible plate 61 through a connecting rope 66, and the cover plate 65 can be swung open by a corner of the connecting rope 66 and a corner of the adjacent connecting rope 66.

[0098] In this embodiment, the setting of the flexible plate 61 can facilitate changing the bending state according to the distance between the hopper 3 and the cover 2, thereby ensuring that the state of the flexible plate 61 can be quickly changed during use, and the cover plate 65 is set to be connected to the flexible plate 61 at only one corner position, so that the cover plate 65 has multiple opening states, adapting to different opening states for dust recovery.

[0099] Among them, due to the setting of the arc groove 62, the positioning column 63 cannot be set on one side of the flexible plate 61. The positioning column 63 has a certain distance from one side of the flexible plate 61. When the positioning column 63 moves inside the arc groove 62, it can form a seal for the gap of the arc groove 62 through the flexible plate 61.

[0100] In one embodiment, the anti-overflow structure 6 further includes:

[0101] The electromagnet 67 is fixed to the inner side of the flexible plate 61. A spring piece 68 is arranged on the outer side of the electromagnet 67. A spherical protrusion 69 is arranged on the side where the spring piece 68 contacts the cover plate 65. The spherical protrusion 69 contacts the cover plate 65. The electromagnet 67 controls the position of the spring piece 68.

[0102] The spring plate 610 is fixed to the back of the flexible plate 61 , and the spring plate 610 is located at the position of the connecting rope 66 to support the cover plate 65 ;

[0103] The collecting bag 611 is installed between the cover 2 and the hopper 3 for collecting dust. The collecting bag 611 is installed in a ring shape and in a corrugated shape. A fan 612 is arranged at the crest position of the collecting bag 611. The fan 612 draws air from the inside of the cover 2 to the outside of the cover 2.

[0104] In this embodiment, the electromagnet 67 controls the spring piece 68 through magnetic force, that is, the electromagnet 67 magnetically attracts the spring piece 68, causing the spring piece 68 to retract, and the spherical protrusion 69 does not contact the cover plate 65, the cover plate 65 loses its restriction, and the opening position of the cover plate 65 is changed by cooperating with one of the spherical protrusions 69 through the connecting rope 66, and the cover plate 65 is pushed to open by the air flow generated by the flow of grain.

[0105] The collecting bag 611 is installed in a circular corrugated shape, which can collect dust at the trough position to prevent it from affecting the air extraction at the peak position.

[0106] In one embodiment, the anti-overflow structure 6 further includes:

[0107] The air duct 613 is arranged inside the cover body and extends to the inside of the feed pipe 1. A windshield 614 is arranged outside the hopper 3. The windshield 614 is used to change the motion state of the fan 612 exhausting air;

[0108] The air outlet 615 is disposed in the air duct 613 and extends to the inside of the feed pipe 1 and moves toward the conical frame 41 .

[0109] In this embodiment, the air duct 613 is used to guide and change the position of the air flow. When the impact force on the grain is small, the grain delivery rate is small. Therefore, the fluctuation of the air flow state is small. By increasing the air flow, the dust cover 65 is opened and the dust enters the inside for recovery.

[0110] The present application also proposes a dust-proof method for a dust-proof discharger, which is used for the dust-proof discharger of the grain processing, and comprises the following steps:

[0111] The feed pipe 1 is connected to the conveying pipeline, and the direction of the discharge port 5 is adjusted so that the discharge port 5 is perpendicular to the ground;

[0112] Grains enter the hopper 3 from the feed pipe 1, and the distributor 4 divides the grains to change the grain falling path;

[0113] The grain impacts the distributor 4, and the arc structure 42 inside the distributor 4 changes its position and arc, guiding the grain to make parabolic motion;

[0114] When grain impacts the distributor 4, the distance between the hopper 3 and the cover 2 changes, driving the anti-overflow structure 6 to change state. When the grain impact force is small, wind assists dust movement. When the impact force is large, the recovery range of the anti-overflow structure 6 is expanded.

[0115] In one embodiment, the grain falls on the distributor 4 during the falling process. The weight of the distributor 4 increases after the impact, and the distributor 4 drives the hopper 3 to move downward. The bottom of the hopper 3 is an elastic structure to mitigate the impact of the grain.

[0116] In summary, the technical solutions disclosed in the above embodiments of the present invention have at least the following advantages:

[0117] 1. The present application is based on an adaptively adjustable dust discharger, which is adaptively adjusted according to changes in the speed and amount of grain transportation. The speed and amount of grain transportation correspond to different dust changes. When the dust discharger makes adaptive adjustments, it can correspond to different dust diffusion states, thereby improving the dust prevention effect during grain transportation.

[0118] 2. In the process of falling and conveying grains, dust is driven to move. However, the masses of dust and grains and the states of being affected by air flow are different. Through the adjustable arc structure 42, when in use, corresponding changes can be made according to the state of the arc structure 42, and the arc of the falling grain can be changed under different grain conveying amounts and conveying speeds.

[0119] 3. Use the impact force generated by grain during transportation to change the state of the dust discharger, obtain the changes in the grain transportation volume and speed, increase the dust prevention range of the dust discharger during high-speed grain transportation, and use a larger range to ensure the dust prevention effect. During low-volume grain transportation, adjust the dust prevention position of the dust discharger so that it can be closer to the grain transportation position to protect less dust.

[0120] 4. Through the dust discharger, during the grain transportation process, there is no need to limit the grain transportation speed, and a good dust prevention effect can be achieved through the dust discharger. The dust prevention state is adjusted according to the change of the impact force of the grain during the transportation process to achieve self-adaptation.

[0121] Although the present invention is disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the attached claims.

Claims

1. A dust discharger for grain processing, characterized in that: include: The hopper (3) has a funnel-shaped lower end and a discharge port (5) at its bottom. A feed pipe (1) is provided at the upper part of the hopper (3). The feed pipe (1) is connected to the hopper (3). Grains enter the hopper (3) through the feed pipe (1) and are discharged from the discharge port (5). A cover (2) is arranged outside the feed pipe (1) and connected to the feed pipe (1); the diameter of the cover (2) is larger than the diameter of the hopper (3); and an elastic member (7) is arranged between the cover (2) and the hopper (3); the elastic member (7) is compressible, and when the compression state of the elastic member (7) is changed, the distance between the cover (2) and the hopper (3) changes; The anti-overflow structure (6) is located inside the cover (2) and is used to recover dust generated during the grain transportation process. When the elastic member (7) changes the compression state to adjust the distance between the cover (2) and the hopper (3), the anti-overflow structure (6) synchronously adjusts the recovery state. When the compression force of the elastic member (7) increases or decreases, the dust prevention state of the anti-overflow structure (6) changes accordingly. The distributor (4) is located inside the hopper (3) and is connected to the cover (2) or the hopper (3) via a connecting rod (8). An arc structure (42) is provided at the drop position of the feed pipe (1) in the distributor (4). The arc structure (42) moves relative to the distributor (4). The position of the arc structure (42) is changed by the impact force of falling grains. The arc of the arc structure (42) changes after the position is changed.

2. A dust discharger for grain processing according to claim 1, characterized in that: The two ends of the elastic member (7) respectively contact the cover (2) and the hopper (3) and are connected to the cover (2) and the hopper (3). The elastic member (7) comprises at least one spring whose two ends respectively contact the cover (2) and the hopper (3). When the height of the hopper (3) changes, the spring is compressed.

3. A dust discharger for grain processing according to claim 2, characterized in that: The distributor (4) comprises: A conical frame (41) is located inside the hopper (3) and connected to the connecting rod (8); an arc structure (42) is arranged inside the conical frame (41); and the arc structure (42) can move relative to the conical frame (41); A buffer unit (43) is provided at the connection position between the conical frame (41) and the connecting rod (8), and the buffer unit (43) absorbs part of the impact force of the grain impacting the arc structure (42); The adjustment unit (44) is arranged inside the conical frame (41). When the arc-shaped structure (42) is impacted, the conical frame (41) moves, and the adjustment unit (44) changes the position and curvature of the arc-shaped structure (42) according to the impact force.

4. A dust discharger for grain processing according to claim 3, characterized in that: The buffer unit (43) comprises: The sleeve (431) is hinged to the outside of the conical frame (41), the connecting rod (8) extends to the inside of the sleeve (431), the connecting rod (8) and the sleeve (431) are sealed by an airtight member (432), the airtight member (432) does not limit the extension and contraction of the connecting rod (8) relative to the sleeve (431), and an air pipe (434) is arranged on the outside of the sleeve (431) and extends to the inside of the conical frame (41); The cavity (433) is fixed inside the conical frame (41), and the air pipe (434) is connected to the cavity (433). The cavity (433) is elastically arranged and communicated with the sleeve (431) through the air pipe (434).

5. A dust discharger for grain processing according to claim 4, characterized in that: The arc structure (42) is an arc plate, the cross section of the arc plate is triangular, and the adjustment unit (44) includes: An extension frame (441) is arranged inside the conical frame (41) and connected to the arc-shaped plate, and is used to change the curvature of the arc-shaped plate. A tripod frame (442) is arranged on one side of the extension frame (441), and the tripod frame (442) is connected to the inner end of the extension frame (441). The tripod frame (442) is swingably arranged, and the tripod frame (442) swings to change the position of the extension frame (441) and the arc-shaped plate and the curvature thereof. The electromagnet (443) is installed outside the cavity (433), and a magnetic plate (444) adapted to the electromagnet (443) is arranged inside the tripod (442). The electromagnet (443) and the magnetic plate (444) cooperate to change the swing angle of the tripod (442).

6. A dust discharger for grain processing according to claim 5, characterized in that: The anti-overflow structure (6) comprises: A flexible plate (61) has one end mounted on the outside of the hopper (3) and extending toward the inner wall of the cover (2); a plurality of arc-shaped grooves (62) for limiting the movement of the flexible plate (61) are arranged on the inner side of the cover (2); a positioning column (63) is arranged on the outer side of the flexible plate (61) and extends into and contacts the arc-shaped groove (62); the spacing between the hopper (3) and the cover (2) changes the position of the positioning column (63) on the inner side of the arc-shaped groove (62); The recovery port (64) is provided on the outer wall of the flexible plate (61) and penetrates the flexible plate (61). A cover plate (65) is arranged inside the recovery port (64) to seal the recovery port (64). One corner of the cover plate (65) is connected to the flexible plate (61) via a connecting rope (66), and the cover plate (65) can be swung open by one corner of the connecting rope (66) and one corner of the adjacent connecting rope (66).

7. A dust discharger for grain processing according to claim 6, characterized in that: The anti-overflow structure (6) further comprises: The electromagnet (67) is fixed on the inner side of the flexible plate (61), a spring sheet (68) is arranged on the outer side of the electromagnet (67), a spherical protrusion (69) is arranged on the side of the spring sheet (68) contacting the cover plate (65), the spherical protrusion (69) contacts the cover plate (65), and the electromagnet (67) controls the position of the spring sheet (68); A spring plate (610) is fixed to the back of the flexible plate (61), and the spring plate (610) is located at the position of the connecting rope (66) to support the cover plate (65); The collecting bag (611) is installed between the cover (2) and the hopper (3) for collecting dust. The collecting bag (611) is installed in a ring shape and in a corrugated shape. A fan (612) is arranged at the crest position of the collecting bag (611). The fan (612) draws air from the inside of the cover (2) to the outside of the cover (2).

8. The dust-proof discharger for grain processing according to claim 7, characterized in that: The anti-overflow structure (6) further comprises: An air duct (613) is arranged inside the cover body and extends into the feed pipe (1). A windshield (614) is arranged outside the hopper (3). The windshield (614) is used to change the motion state of the air drawn by the fan (612); The air outlet (615) is arranged in the air duct (613) and extends to the inside of the feed pipe (1) and moves toward the conical frame (41).

9. A dust-proof method for a dust-proof discharger for grain processing, used for the dust-proof discharger according to any one of claims 1 to 8, characterized in that: The following steps are involved: The feed pipe (1) is connected to the conveying pipeline, and the direction of the discharge port (5) is adjusted so that the discharge port (5) is perpendicular to the ground; Grains enter the hopper (3) through the feed pipe (1), and the divider (4) divides the grains to change the grain falling path; The grain impacts the distributor (4), and the arc structure (42) inside the distributor (4) changes its position and arc, guiding the grain to make parabolic motion; When the grain impacts the distributor (4), the distance between the hopper (3) and the cover (2) changes, driving the anti-overflow structure (6) to change state. When the grain impact force is small, the wind assists the movement of dust. When the impact force is large, the recovery range of the anti-overflow structure (6) is expanded.

10. A dust prevention method for a dust discharger in grain processing according to claim 9, characterized in that: During the falling process, the grains land on the distributor (4), and the weight of the distributor (4) increases after being impacted. The distributor (4) drives the hopper (3) to move downward, and the bottom of the hopper (3) is an elastic structure for alleviating the impact of the grains.

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