A dust-proof discharger and method for grain processing

Abstract

The present invention discloses a dust-proof discharger and method for grain processing, which relates to the technical field of dust prevention in grain conveying, and includes: a hopper, an inlet pipe is arranged at the upper part, the inlet pipe is communicated with the hopper, and grains enter the interior of the hopper through the inlet pipe and are discharged from the discharge port; a cover, which is arranged outside the inlet pipe and connected to the inlet pipe, an elastic member is arranged between the cover and the hopper, the elastic member can be compressed, and when the compressed state of the elastic member is changed, the distance between the cover and the hopper is changed; an anti-overflow structure, which is located inside the cover and is used for recovering the dust generated during the grain conveying process. When the elastic member changes the compression state to adjust the distance between the cover and the hopper, the anti-overflow structure synchronously adjusts the recovery state, and when the compression force of the elastic member increases or decreases, the dust-proof state of the anti-overflow structure changes accordingly. This application is an adaptive adjustable dust-proof discharger, which is adaptively adjusted according to the change of the grain conveying speed and the conveying volume.

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 quantity of grain during transportation also affect the spread of dust. The existing dust-proof dischargers cannot prevent dust overflow according to the changes in the conveying speed and quantity of grain, and cannot achieve good dust-proof effects when the conveying speed and quantity of grain are different. Summary of the Invention

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

[0012] To achieve the above purposes, the present invention is realized through the following technical solutions: A dust-proof discharger for grain processing, comprising:

[0013] A hopper, with a funnel-shaped lower end, an outlet is provided at its bottom, and a feed pipe is provided at the upper part of the hopper. The feed pipe is connected to the hopper in a communicating manner, and the grain enters the inside of the hopper through the feed pipe and is discharged from the outlet.

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

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

[0016] A distributor, located inside the hopper and connected to the cover or the hopper through a connecting rod. An arc-shaped structure is provided at the falling position of the feed pipe in the distributor. The arc-shaped structure moves relative to the distributor, and the position of the arc-shaped structure is changed by the impact force of the falling grain. After the position of the arc-shaped structure changes, the arc changes.

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

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

[0019] A conical frame, located inside the hopper and connected to the connecting rod. The arc-shaped structure is arranged inside the conical frame and 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 hitting the arc-shaped structure.

[0021] An adjustment unit is disposed inside the conical frame. When the arc-shaped structure is impacted and the conical frame moves, the adjustment unit changes the position and curvature of the arc-shaped structure according to the impact force.

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

[0023] A sleeve is hinged to the outside of the conical frame. A 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 telescopic movement of the connecting rod relative to the sleeve. An air pipe is provided on the outside of the sleeve and extends into the conical frame.

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

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

[0026] An extension frame is disposed inside the conical frame and connected to the arc-shaped plate for changing the curvature of the arc-shaped plate. A triangular frame is provided on one side of the extension frame. The inner end of the triangular frame is connected to the extension frame. The triangular frame is swingable. The swing of the triangular frame changes the position and curvature of the extension frame and the arc-shaped plate.

[0027] An electromagnet is installed outside the cavity. A magnetic plate adapted to the electromagnet is provided on the inner side of the triangular frame. The cooperation between the electromagnet and the magnetic plate changes the swing angle of the triangular frame.

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

[0029] A flexible plate has one end installed outside the hopper and extends towards the inner wall of the cover. A plurality of arc-shaped grooves for restricting the movement of the flexible plate are provided inside the cover. A positioning post is disposed on the outside of the flexible plate and extends into the arc-shaped groove and contacts the arc-shaped groove. The distance between the hopper and the cover changes the position of the positioning post inside the arc-shaped groove.

[0030] A recovery port is opened on the outer wall of the flexible plate and penetrates through the flexible plate. A cover plate is disposed inside the recovery port to form a seal for the recovery port. One corner position of the cover plate is connected to the flexible plate by a connecting rope, and the cover plate can swing open with one corner of the connecting rope and the corner of an adjacent connecting rope.

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

[0032] An electromagnet is fixed inside the flexible plate. A spring piece is provided on the outside of the electromagnet. A spherical protrusion is provided on the side of the spring piece contacting the cover plate. The spherical protrusion contacts the cover plate. The electromagnet controls the position of the spring piece.

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

[0034] The collection bag is installed between the cover and the hopper for dust recovery. The collection bag is installed in a circular shape and is installed in a corrugated shape. A fan is arranged at the peak position of the collection bag, and the fan sucks 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 includes:

[0036] The air duct is arranged inside the cover body and extends into the inside of the feed pipe. A wind baffle is arranged outside the hopper, and the wind baffle is used to change the movement state of the air sucked by the fan;

[0037] The air outlet is arranged at the position where the air duct extends into the inside of the feed pipe and moves towards the conical frame.

[0038] The present application also proposes a dust prevention method for a dust prevention discharger, which is used for the dust prevention discharger in the above-mentioned grain processing, and includes the following steps:

[0039] Connect the feed pipe to the conveying pipeline, adjust the orientation of the discharge port so that the discharge port is perpendicular to the ground;

[0040] The grain enters the inside of the hopper from the feed pipe, and the distributor shunts the grain to change the falling path of the grain;

[0041] The grain impacts the distributor, and the arc structure inside the distributor changes the position and radian to guide the grain to move in a parabolic motion;

[0042] During the process of the grain impacting the distributor, the distance between the hopper and the cover changes, driving the anti-overflow structure to change its state. When the impact force of the grain is small, the wind is used to assist the movement of the dust. 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, during the falling process of the grain, it lands on the distributor. After being impacted, the weight of the distributor increases, and the distributor drives the hopper to move downward. The bottom of the hopper is an elastic structure for reducing the impact of the grain.

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

[0045] 1. The present application is an adaptable dust prevention discharger, which makes an adaptable adjustment according to the change of the conveying speed and conveying volume of the grain. The conveying speed and conveying volume of the grain correspond to different dust changes. When the dust prevention discharger makes an adaptable adjustment, it can correspond to different dust diffusion states, improving the dust prevention effect during the grain conveying process.

[0046] 2. During the downward transportation of grain, the dust is driven to move. Since the quality of the dust and the grain and their states of being affected by air flow are different, through an adjustable arc structure, during use, corresponding changes can be made according to the state of the arc structure, and the arc change of the grain falling can be changed under different conditions of the grain transportation volume and transportation speed.

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

[0048] 4. Through the dust-proof discharger, during the grain transportation process, without restricting the grain transportation speed, a good dust-proof effect can be achieved through the dust-proof discharger, and the dust-proof state is adjusted according to the change in the impact force during the grain transportation process to achieve self-adaptation. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0051] Figure 3 is a schematic diagram of a partial flexible plate structure of the present invention;

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

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

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

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

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

[0057] Figure 9 is a plan view of the arc structure of the present invention;

[0058] Figure 10 is a half-sectional plan view of the present invention;

[0059] Figure 11 is a structural diagram of the flexible plate of the present invention in an unbending state;

[0060] Figure 12 This is the exploded view of the flexible plate of the present invention;

[0061] Figure 13 This is the partial schematic view of the flexible plate of the present invention;

[0062] Figure 14 This is the side view of the partial structure of the flexible plate of the present invention.

[0063] In the figure: 1 feeding 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 member, 433 cavity, 434 air pipe; 44 adjustment unit: 441 extension frame, 442 triangular frame, 443 electromagnet, 444 magnetic plate;

[0065] 61 flexible plate, 62 arc groove, 63 positioning post, 64 recovery port, 65 cover plate, 66 connecting rope, 67 electromagnet, 68 elastic sheet, 69 spherical protrusion, 610 elastic plate, 611 collection bag, 612 fan, 613 air duct, 614 wind baffle, 615 air outlet. Detailed implementation manners

[0066] The following will disclose multiple implementation manners of the present invention with the accompanying drawings. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present invention. That is to say, in some implementation manners of the present invention, these practical details are not necessary. And if possible in implementation, the features of different embodiments can be applied interactively.

[0067] Unless otherwise defined, all the terms (including technical and scientific terms) used herein have their ordinary meanings, and their meanings can be understood by those skilled in this field. Further, the definitions of the above terms in commonly used dictionaries should be interpreted as having the same meaning as that in the related fields of the present invention. Unless specifically defined otherwise, these terms will not be interpreted as idealized or overly formal meanings.

[0068] Please refer to Figures 1-14 , the present invention provides a dust-proof discharger for grain processing, which is arranged at the outlet position of the grain or on the path of grain transportation during the process of grain processing and transportation to recover the dust generated during grain transportation and prevent dust overflow.

[0069] In one embodiment, the dust-proof discharger includes:

[0070] The hopper 3 has a funnel-shaped lower end, and a discharge port 5 is provided at its bottom. An inlet pipe 1 is provided at the upper part of the hopper 3. The inlet pipe 1 is connected to the hopper 3 in a communicating manner. Grain enters the interior of the hopper 3 through the inlet pipe 1 and is discharged through the discharge port 5.

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

[0072] The anti-overflow structure 6 is located inside the cover 2 and is used to recover the dust generated during the grain transportation process. When the elastic member 7 changes its compressed state to adjust the distance between the cover 2 and the hopper 3, the anti-overflow structure 6 synchronously adjusts its recovery state. 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 is connected to the cover 2 or the hopper 3 through a connecting rod 8. An arc structure 42 is provided at the material falling position of the inlet pipe 1 in the distributor 4. The arc structure 42 moves relative to the distributor 4, and the position of the arc structure 42 is changed by the impact force of the falling grain. After the position of the arc structure 42 is changed, the arc degree changes.

[0074] In this embodiment, the setting of the distributor 4 can change the state of the grain during the falling process. When the falling grain contacts the arc structure 42, due to the inertia of the falling grain and the change in the arc degree of the arc structure 42, the grain generates a parabolic motion. And because the mass of the dust is different from that of the grain, after being thrown out from the position of the arc structure 42, the falling speed of the grain is higher than that of the dust, so as to facilitate the recovery of the dust by the anti-overflow structure 6.

[0075] Since there are changes in the conveying volume during the grain transportation process, and the influence of the conveying volume on the dust is different. In order to better recover the dust, the adjustable anti-overflow structure 6 can be adjusted according to the falling state of the grain, so as to be able to quickly recover the dust and avoid the situation that when the grain conveying volume is small, the air flow range is small, resulting in the dust being unable to move to the position of the anti-overflow structure 6 for recovery and the need to increase the recovery power.

[0076] In one embodiment, the two ends of the elastic member 7 respectively contact and are connected to the cover 2 and the hopper 3. The elastic member 7 at least includes a spring with two ends respectively contacting 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 disposed 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 both adopt counterbore designs for restricting the position of the elastic member 7.

[0078] Another option is that the elastic member 7 is disposed outside the cover 2. In this state, at least part of the elastic member 7 is exposed outside the cover 2. In addition to the spring, the elastic member 7 further includes a stud for positioning the hopper 3 and 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 provided to be able to change due to the impact generated during the grain transportation process. The support of the elastic member 7 can also be reset when the impact force during the grain transportation becomes smaller, thereby changing the state of the anti-overflow structure 6.

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

[0081] A conical frame 41, located inside the hopper 3 and connected to the connecting rod 8. An arc-shaped structure 42 is disposed inside the conical frame 41, and the arc-shaped 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. The buffer unit 43 absorbs part of the impact force of the grain hitting the arc-shaped structure 42;

[0083] An adjustment unit 44 is disposed inside the conical frame 41. When the arc-shaped structure 42 is impacted and the conical frame 41 moves, the adjustment unit 44 changes the position and curvature of the arc-shaped 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-shaped structure 42 is small, the impact force is removed through the buffer unit 43. In this state, the hopper 3 will not generate displacement, 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, improving the service life of the anti-overflow structure 6.

[0085] There are two different embodiments for the arc-shaped structure 42. In one of them, the arc-shaped structures 42 are arranged at intervals. In this setting state, the conical frame 41 is used to divert the grain so that the grain enters the inside of the arc-shaped structure 42, and the arc-shaped structure 42 restricts the parabolic movement of the grain. The other is a compact setting. In this state, adjusting the curvature of the arc-shaped structure 42 will cause the overall curvature of the grain landing position to change, 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. The connecting rod 8 extends into the sleeve 431. A gas-tight member 432 is used for sealing between the connecting rod 8 and the sleeve 431. The gas-tight member 432 does not restrict the telescopic movement of the connecting rod 8 relative to the sleeve 431. A trachea 434 is arranged on the outside of the sleeve 431 and extends into the conical frame 41.

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

[0089] In this embodiment, the cavity 433 is arranged to be elastic. When impacted by grains and the buffer frame moves, the buffer frame can move downward. The gas inside the sleeve 431 is compressed. The gas enters into the cavity 433 through the trachea 434, causing the cavity 433 to expand. The pressure inside the cavity 433 changes. When the impact force decreases, the gas inside the cavity 433 returns to the sleeve 431.

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

[0091] The extension frame 441 is arranged inside the conical frame 41 and connected to the arc-shaped plate for changing the radian of the arc-shaped plate. A triangular frame 442 is arranged on one side of the extension frame 441. The inner end of the triangular frame 442 is connected to the extension frame 441. The triangular frame 442 is swingably arranged. The swing of the triangular frame 442 changes the position and radian of the extension frame 441 and the arc-shaped plate.

[0092] The electromagnet 443 is installed on the outside of the cavity 433. A magnetic plate 444 adapted to the electromagnet 443 is arranged on the inner side of the triangular frame 442. The cooperation between the electromagnet 443 and the magnetic plate 444 changes the swing angle of the triangular frame 442.

[0093] In this embodiment, one end of the triangular frame 442 is hinged to the conical frame 41. After the triangular frame 442 swings, the movement distances on the inner and outer sides are different. Therefore, the extension frame 441 is installed on the outside of the triangular frame 442. After the triangular frame 442 swings, the movement distances at both ends of the arc-shaped plate are inconsistent, thereby changing the angle of the arc-shaped plate.

[0094] The arc-shaped plate is a thin steel plate structure with elasticity and is installed by means of sequential lamination. The inner side of the arc-shaped plate is inserted into the conical frame 41 and is restricted by the conical frame 41. The thickness of the cavity 433 at the position where the electromagnet 443 is installed 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] The flexible plate 61 has one end mounted on the outside of the hopper 3 and extends towards the inner wall of the cover 2. A plurality of arc-shaped grooves 62 for restricting the movement of the flexible plate 61 are provided inside the cover 2. A positioning post 63 is arranged on the outside of the flexible plate 61 and extends into the arc-shaped groove 62 and contacts the arc-shaped groove 62. The distance between the hopper 3 and the cover 2 changes the position of the positioning post 63 inside the arc-shaped groove 62;

[0097] The recovery port 64 is opened on the outer wall of the flexible plate 61 and penetrates through the flexible plate 61. A cover plate 65 is arranged inside the recovery port 64 to form a seal for the recovery port 64. One corner position of the cover plate 65 is connected to the flexible plate 61 through a connecting rope 66, and the cover plate 65 can swing open with one corner of the connecting rope 66 and the corner of an 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, so as to ensure that the state of the flexible plate 61 can be quickly changed during use. The cover plate 65 is set to be connected to the flexible plate 61 only at one corner position, so that the cover plate 65 has multiple opening states to adapt to different opening states for dust recovery.

[0099] Among them, due to the setting of the arc-shaped groove 62, the positioning post 63 cannot be arranged at one side position of the flexible plate 61. There is a certain interval between the positioning post 63 and one side of the flexible plate 61. When the positioning post 63 moves inside the arc-shaped groove 62, it can form a seal for the gap of the arc-shaped groove 62 through the flexible plate 61.

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

[0101] An electromagnet 67 is fixed to the inner side of the flexible plate 61. A shrapnel 68 is arranged on the outside of the electromagnet 67. A spherical protrusion 69 is arranged on the side of the shrapnel 68 contacting the cover plate 65. The spherical protrusion 69 contacts the cover plate 65. The electromagnet 67 controls the position of the shrapnel 68;

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

[0103] A collection bag 611 is installed between the cover 2 and the hopper 3 for recovering dust. The collection bag 611 is installed in a ring shape and is installed in a corrugated shape. A blower 612 is arranged at the peak position of the collection bag 611. The blower 612 sucks air from the inside of the cover 2 to the outside of the cover 2.

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

[0105] The collection bag 611 is installed in a circular corrugated shape, which can concentrate 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] An air duct 613, which is arranged inside the cover body and extends into the feeding pipe 1. A wind baffle 614 is arranged outside the hopper 3, and the wind baffle 614 is used to change the movement state of the air extraction by the fan 612;

[0108] An air outlet 615, which is arranged at the end where the air duct 613 extends into the feeding pipe 1 and moves towards 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 of the grain is small, the conveying volume and speed of the grain are small. Therefore, the fluctuation of the air flow state caused is small. By increasing the air flow volume, the dust is driven to open the cover plate 65, and the dust enters the inside for recovery.

[0110] The present application also proposes a dust prevention and discharge method for the dust prevention and discharger, which is used for the dust prevention and discharger in the above-mentioned grain processing, and includes the following steps:

[0111] Connect the feeding pipe 1 to the conveying pipeline, and adjust the orientation of the discharge port 5 so that the discharge port 5 is perpendicular to the ground;

[0112] The grain enters the inside of the hopper 3 from the feeding pipe 1, and the distributor 4 distributes the grain to change the falling path of the grain;

[0113] The grain impacts the distributor 4, and the arc-shaped structure 42 inside the distributor 4 changes its position and radian to guide the grain to move in a parabolic motion;

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

[0115] In one embodiment, during the falling process of the grain, it lands on the distributor 4. After being impacted, the weight of the distributor 4 increases, and the distributor 4 drives the hopper 3 to move downward. The bottom of the hopper 3 is an elastic structure for reducing 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 relates to a dust-proof ejector that can be adaptively adjusted. It makes adaptive adjustments according to the speed of grain transportation and changes in the transportation volume. Different dust changes correspond to different speeds and transportation volumes of grain transportation. When the dust-proof ejector makes adaptive adjustments, it can correspond to different dust diffusion states, improving the dust-proof effect during grain transportation.

[0118] 2. During the process of falling grain transportation, it drives the movement of dust. Since the mass of dust and grain and their states affected by air flow are different, through the adjustable arc structure 42, during use, corresponding changes can be made according to the state of the arc structure 42, changing the arc of grain falling under different grain transportation volumes and speeds.

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

[0120] 4. Through the dust-proof ejector, during grain transportation, it is not necessary to limit the grain transportation speed to achieve a good dust-proof effect through the dust-proof ejector. Adaptive adjustment of the dust-proof state is realized according to the change in the impact force during grain transportation.

[0121] Although the present invention is disclosed in combination with the above embodiments, it is not intended to limit the present invention. Any person skilled in this art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A dust-proof discharger for grain processing, characterized in that, Comprising: A hopper (3) with a funnel-shaped lower end, having a discharge port (5) at its bottom. An inlet pipe (1) is provided at the upper part of the hopper (3), and the inlet pipe (1) is communicated with the hopper (3). Grain enters the interior of the hopper (3) through the inlet pipe (1) and is discharged through the discharge port (5). A cover (2) is arranged outside the inlet pipe (1) and connected to the inlet pipe (1). The diameter of the cover (2) is larger than that of the hopper (3), and an elastic member (7) is arranged between the cover (2) and the hopper (3). The elastic member (7) can be compressed. When the compressed state of the elastic member (7) is changed, the distance between the cover (2) and the hopper (3) changes. An anti-overflow structure (6) is located inside the cover (2) and is used to recover the dust generated during the grain transportation process. When the elastic member (7) changes its compressed state to adjust the distance between the cover (2) and the hopper (3), the anti-overflow structure (6) synchronously adjusts its recovery state. When the compression force of the elastic member (7) increases or decreases, the dust-proof state of the anti-overflow structure (6) changes accordingly. A distributor (4) is located inside the hopper (3) and is connected to the cover (2) or the hopper (3) through a connecting rod (8). An arc-shaped structure (42) is arranged at the falling position of the inlet pipe (1) in the distributor (4). The arc-shaped structure (42) moves relative to the distributor (4), and the position of the arc-shaped structure (42) is changed by the impact force of the falling grain. After the position of the arc-shaped structure (42) is changed, the arc changes. The anti-overflow structure (6) includes: A flexible plate (61) with one end installed on the outside of the hopper (3) and extending towards the inner wall of the cover (2). A plurality of arc-shaped grooves (62) for restricting the movement of the flexible plate (61) are arranged inside the cover (2). A positioning post (63) is arranged on the outside of the flexible plate (61) and extends into the arc-shaped groove (62) and contacts the arc-shaped groove (62). When the distance between the hopper (3) and the cover (2) changes, the position of the positioning post (63) inside the arc-shaped groove (62) changes. A recovery port (64) is opened on the outer wall of the flexible plate (61) and penetrates through the flexible plate (61). A cover plate (65) is arranged inside the recovery port (64) to form a seal for the recovery port (64). One corner position of the cover plate (65) is connected to the flexible plate (61) through a connecting rope (66), and the cover plate (65) can swing open with one corner of the connecting rope (66) and the corner of the adjacent connecting rope (66). The cover plate (65) is set to be connected to the flexible plate (61) only at one corner position, so that the cover plate (65) has multiple opening states to adapt to different opening states for dust recovery.

2. The dust-proof discharger for grain processing according to claim 1, characterized in that, Both ends of the elastic member (7) respectively contact and are connected to the cover (2) and the hopper (3). The elastic member (7) at least includes a spring with both ends respectively contacting the cover (2) and the hopper (3). When the height of the hopper (3) changes, the spring is compressed.

3. A dust-proof discharger for grain processing according to claim 2, characterized in that, The distributor (4) includes: A conical frame (41) is located inside the hopper (3) and is connected to the connecting rod (8). The arc-shaped structure (42) is arranged inside the conical frame (41), and the arc-shaped 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 on the arc-shaped structure (42); An adjustment unit (44) is provided inside the conical frame (41). The adjustment unit (44) changes the position and radian of the arc-shaped structure (42) according to the impact force received by the arc-shaped structure (42).

4. A dust-proof discharger for grain processing according to claim 3, characterized in that, The buffer unit (43) includes: A sleeve (431) is hinged to the outside of the conical frame (41). The connecting rod (8) extends into the sleeve (431). A gas-tight member (432) is used for sealing between the connecting rod (8) and the sleeve (431). The gas-tight member (432) does not restrict the telescopic movement of the connecting rod (8) relative to the sleeve (431). A trachea (434) is provided on the outside of the sleeve (431) and extends into the conical frame (41); A cavity (433) is fixed inside the conical frame (41). The trachea (434) is connected to the cavity (433). The cavity (433) is elastically arranged and communicated with the sleeve (431) through the trachea (434).

5. A dust-proof discharger for grain processing according to claim 4, characterized in that, The arc-shaped structure (42) is an arc-shaped plate, and the cross-section of the arc-shaped plate is triangular. The adjustment unit (44) includes: An extension frame (441) is provided inside the conical frame (41) and is connected to the arc-shaped plate for changing the radian of the arc-shaped plate. A triangular frame (442) is provided on one side of the extension frame (441). The inner end of the triangular frame (442) is connected to the extension frame (441). The triangular frame (442) is swingable. The swing of the triangular frame (442) changes the position and radian of the extension frame (441) and the arc-shaped plate; An electromagnet (443) is installed outside the cavity (433). A magnetic plate (444) adapted to the electromagnet (443) is provided on the inner side of the triangular frame (442). The cooperation between the electromagnet (443) and the magnetic plate (444) changes the swing angle of the triangular frame (442).

6. The dust-proof discharger for grain processing according to claim 5, characterized in that, The anti-overflow structure (6) further includes: An electromagnet (67) is fixed to the inner side of the flexible plate (61). A shrapnel (68) is provided outside the electromagnet (67). A spherical protrusion (69) is provided on the side of the shrapnel (68) contacting the cover plate (65). The spherical protrusion (69) contacts the cover plate (65). The electromagnet (67) controls the position of the shrapnel (68). The opening position of the cover plate (65) is changed by cooperating with one of the spherical protrusions (69) through a connecting rope (66). The cover plate (65) is pushed open by the air flow generated by the flow of grain; A spring plate (610) is fixed to the back of the flexible plate (61). The spring plate (610) is located at the position of the connecting rope (66) to support the cover plate (65); A collection bag (611) is installed between the hood (2) and the hopper (3) for collecting dust. The collection bag (611) is installed in a ring shape and is installed in a corrugated shape. A blower (612) is provided at the peak position of the collection bag (611). The blower (612) sucks air from the inside of the hood (2) to the outside of the hood (2).

7. The dust-proof discharger for grain processing according to claim 6, characterized in that, The anti-overflow structure (6) further includes: An air duct (613) is arranged inside the hood and extends into the inside of the feed pipe (1). A wind baffle (614) is arranged outside the hopper (3), and the wind baffle (614) is used to change the movement state of the air extraction by the fan (612); An air outlet (615) is arranged at the end where the air duct (613) extends into the inside of the feed pipe (1) and moves towards the conical frame (41).

8. A dust-proof discharging method for a dust-proof discharger in grain processing, which is used for the dust-proof discharger according to any one of claims 1-7, characterized in that, It includes the following steps: Connect the feed pipe (1) to the conveying pipeline, and adjust the orientation of the discharge port (5) so that the discharge port (5) is perpendicular to the ground; The grain enters the inside of the hopper (3) from the feed pipe (1), and the distributor (4) diverts the grain to change the falling path of the grain; The grain impacts the distributor (4), and the arc-shaped structure (42) inside the distributor (4) changes its position and curvature to guide the grain to move in a parabolic motion; During the process of the grain impacting the distributor (4), the distance between the hopper (3) and the hood (2) changes, driving the anti-overflow structure (6) to change its state. When the impact force of the grain is small, the movement of dust is assisted by wind power, and when the impact force is large, the recovery range of the anti-overflow structure (6) is expanded.

9. A dust-proof discharging method for a dust-proof discharger in grain processing according to claim 8, characterized in that, During the falling process of the grain, it lands on the distributor (4). After being impacted, the weight of the distributor (4) increases, and the distributor (4) drives the hopper (3) to move downward. The bottom of the hopper (3) is an elastic structure for reducing the impact of the grain.

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