Winnowing impurity removal device

Abstract

The invention belongs to the technical field of winnowing impurity removal devices. The winnowing impurity removal device comprises a screening mechanism, a winnowing mechanism and a winnowing mechanism, the screening mechanism comprises a screening cavity, and the screening cavity is provided with a feeding assembly and a main discharging channel; the feeding mechanism is arranged on the feeding assembly; the winnowing impurity removal mechanism comprises an air suction channel, and a discharge port of the main discharge channel is used as the air suction channel; the main discharging channel is used as the discharging and impurity removing air channel; the sedimentation and impurity removal mechanism comprises a feeding sedimentation and impurity removal mechanism and a discharging sedimentation and impurity removal mechanism, and the discharging sedimentation and impurity removal mechanism is communicated with the main discharging channel; a first air duct and a second air duct are respectively arranged at the tops of the feeding and discharging sedimentation impurity removal mechanisms; and the feeding impurity removal air duct is arranged in the feeding mechanism. The winnowing impurity removal mechanism is used for solving the technical problems that an existing winnowing impurity removal mechanism of screening equipment is low in productivity and low in screening rate.

Description

Technical Field

[0001] The present invention belongs to the technical field of pneumatic separation and impurity removal devices, and particularly relates to a pneumatic separation and impurity removal device for a screening device. Background Art

[0002] With the rapid development of the feed processing industry, the requirements for screening equipment are increasing day by day. Traditional screening equipment often has problems such as large floor area, insufficient production capacity, low impurity removal efficiency, and complex operation, making it difficult to meet the needs of modern production lines. This requires a new generation of combined rotary screens. Through technological innovation and optimized design, it can achieve a super-large material layer space, high production capacity, and efficient impurity removal, while reducing the floor area of the equipment and the civil construction investment cost of customers, and improving the convenience of equipment operation and the simplicity of maintenance to cope with the challenges of the current and future feed processing industry and create greater economic benefits for customers.

[0003] For screening products, adding a pneumatic separation system can effectively remove light impurities and dust in the material, thereby reducing the screening pressure of the screening equipment and greatly improving the screening rate and production capacity. The related problems of cleaning screens / grading screens on the market currently: Most screening products do not rationally utilize the principle of pneumatic separation, resulting in low production capacity. In addition, some light impurities and dust are contained in the main material after screening, which greatly affects the screening rate of the whole machine equipment and the performance of the equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a pneumatic separation and impurity removal device to solve the technical problems of low production capacity and low screening rate of the pneumatic separation and impurity removal mechanism of existing screening equipment.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions. The pneumatic separation and impurity removal device is characterized by including: A screening mechanism, including a screening chamber, on which a feeding assembly and a main discharge channel are provided; A feeding mechanism, arranged on the feeding assembly for uniform feeding; A pneumatic separation and impurity removal mechanism, including: An air suction duct, using the discharge port of the main discharge channel as the air suction duct; A discharge and impurity removal duct, using the main discharge channel as the discharge and impurity removal duct; A sedimentation and impurity removal mechanism, including a feeding sedimentation and impurity removal mechanism and a discharge sedimentation and impurity removal mechanism. The discharge sedimentation and impurity removal mechanism is connected to the main discharge channel; a first air duct is provided at the top of the feeding sedimentation and impurity removal mechanism; a second air duct is provided at the top of the discharge sedimentation and impurity removal mechanism, and a discharge air door is provided on the second air duct; A feeding and impurity removal duct, arranged in the feeding mechanism; The air suction duct provides the air inlet source. The air passes through the main material of the discharge and impurity removal duct from bottom to top, taking away light impurities and dust, and settling and discharging through the discharge sedimentation and impurity removal mechanism, realizing the discharge air separation and impurity removal. The air of the discharge sedimentation and impurity removal mechanism goes to the feed and impurity removal duct through the first duct. The air passes through the evenly fed material, taking away light impurities and dust, and then goes from bottom to top and passes through the feeding mechanism into the feed sedimentation and impurity removal mechanism to settle and discharge the light impurities and dust, realizing the feed air separation and impurity removal. The air of the feed sedimentation and impurity removal mechanism is discharged through the second duct.

[0006] The present invention relies on the circulating air suction arrangement to conduct the first cleaning of the sieved main material, mainly cleaning the light impurities and dust mixed in the main material, etc. Then, through the feed air separation area, the material at the feed is subjected to air separation and impurity removal, and the corresponding impurities are discharged from the equipment through different augers. After centralized collection and treatment, the utilization of wind energy is relatively high, which can make the impurities and dust in the material cleaner and reduce the overall energy consumption.

[0007] To solve the technical problem of how to adjust the overall air volume, the present invention adopts the following technical solution. An outlet adjustment air door is arranged on the second duct to control the size of the overall air volume. The outlet adjustment air door is connected to the outlet adjustment knob through the outlet adjustment pull rod. By rotating the outlet adjustment knob to drive the outlet adjustment pull rod to rotate, the angle of the outlet adjustment air door is changed: when the opening of the air door becomes smaller, the corresponding air volume becomes smaller, and the overall impurity removal wind force becomes smaller, so as to realize the adjustment of the air volume at the outlet, that is, the size of the air volume entering the air suction duct as a whole, and adapt to the impurity removal of different types of materials.

[0008] To solve the technical problem of further improving the screening rate, the present invention adopts the following technical solution. An auxiliary air suction interface is arranged on the screening mechanism to connect to the auxiliary air network dust removal mechanism, so as to form a negative pressure in the area of the auxiliary air suction interface, ensure the sealing of the screening mechanism, and at the same time clean and remove the local light impurities and dust. The present invention forms a negative pressure in this area by connecting an external auxiliary air network (which can be connected in parallel with the main air network), ensures the sealing of the sieve body, and at the same time cleans and removes the local light impurities and dust.

[0009] To solve the technical problem that the air suction duct is not adjustable, the present invention adopts the following technical solution. An air path adjustment plate is arranged in the discharge and impurity removal duct, and the air path adjustment plate can move horizontally in the discharge and impurity removal duct. First air supply openings and second air supply openings are respectively arranged on both sides of the air inlet of the air suction duct.

[0010] To solve the technical problem of uneven feeding, the present invention adopts the following technical solution. The feeding mechanism includes: A feeding cavity, in which a material flow baffle assembly is arranged; A self-adjusting vibrating feeding assembly, comprising: a vibrating plate, rotatably arranged on the feeding cavity; a material flow channel is formed between the vibrating plate and the material flow baffle assembly; A first rotating shaft, rotatably arranged on the feeding cavity; An adjusting suspension rod, one end of which is arranged on the first rotating shaft in the feeding cavity, and the other end of the adjusting suspension rod is rotatably connected to the vibrating plate; A first adjusting rod, one end of which is arranged on the first rotating shaft, and a first adjusting hole is arranged along the length direction of the first adjusting rod; A feeding gap adjusting weight, arranged in the first adjusting hole, and the position of the feeding gap adjusting weight in the first adjusting hole is adjustable.

[0011] By arranging the self-adjusting vibrating feeding device in the present invention, relying on the impact force of the material on the vibrating plate and the gravity of the feeding gap adjusting weight itself, the size of the vibrating feeding gap is changed in real time, so as to ensure that the feeding gap is automatically adjusted along with the size of the feeding. To solve the technical problem of how to realize the vibration of the vibrating plate, the present invention adopts the following technical solutions. The self-adjusting vibrating feeding assembly further comprises: A second rotating shaft, rotatably arranged on the feeding cavity; An eccentric assembly, on which the vibrating plate is arranged; the eccentric assembly is symmetrically arranged at both ends of the second rotating shaft; the eccentric assembly comprises: An eccentric block, arranged on the second rotating shaft; An eccentric bushing, arranged on the second rotating shaft, and the eccentric bushing is located outside the eccentric block; a spacer sleeve is arranged between the eccentric block and the eccentric bushing; A bearing assembly, arranged on the eccentric bushing, and the vibrating plate is arranged on the bearing assembly; the bearing assembly comprises a bearing and a bearing seat, and the eccentric bushing is arranged in the bearing.

[0012] To further solve the technical problem of material flow uniform distribution, the present invention adopts the following technical solutions. An inlet secondary material equalizing assembly is arranged in the feeding cavity, comprising: An inlet baffle, rotatably arranged at the outlet of the feeding cavity via a third rotating shaft; A second adjusting rod, one end of which is arranged on the third rotating shaft, and a second adjusting hole is arranged along the length direction of the second adjusting rod; An inlet baffle adjusting weight, arranged in the second adjusting hole, and the position of the inlet baffle adjusting weight in the second adjusting hole is adjustable.

[0013] The present invention utilizes the secondary material leveling component of the feeding mechanism to evenly distribute the material flow multiple times, thereby ensuring the uniform distribution of materials on the sieve surface and further improving the screening effect.

[0014] To solve the technical problem of how to implement the material flow baffle component, the present invention adopts the following technical solutions. The material flow baffle component is arranged below the feed inlet of the feeding chamber, and the material flow baffle component includes: The first material flow baffle is vertically arranged in the feeding chamber; the vibrating material plate is located downstream of the first material flow baffle; The second material flow baffle is opposite to the first material flow baffle and is inclinedly arranged in the feeding chamber; The third material flow baffle is inclinedly arranged at the bottom of the feeding chamber and is located below the vibrating material plate. The third material flow baffle is used to guide the materials conveyed by the first material flow baffle, the vibrating material plate, and the second material flow baffle to the discharge port of the feeding chamber.

[0015] To solve the technical problem of how to implement the sedimentation and impurity removal mechanism, the present invention adopts the following technical solutions. The discharge sedimentation and impurity removal mechanism includes a first sedimentation chamber and a first impurity removal auger arranged in the first sedimentation chamber; The feed sedimentation and impurity removal mechanism includes a second sedimentation chamber and a second impurity removal auger arranged in the second sedimentation chamber; The driving mechanism is respectively connected to the first impurity removal auger, the second impurity removal auger, and the first rotating shaft via a synchronous pulley mechanism.

[0016] To solve the technical problem of the inability to adjust the feed air volume, the present invention adopts the following technical solutions. An inlet adjustment air damper is arranged on the second air duct to control the size of the feed air volume entering. The inlet adjustment air damper is connected to the inlet adjustment knob via an inlet adjustment pull rod; By rotating the inlet adjustment knob to drive the rotation of the inlet adjustment pull rod and change the angle of the inlet adjustment air damper: when the opening of the inlet adjustment air damper becomes larger, a partial short circuit occurs for the feed air volume, the corresponding feed air volume becomes smaller, and the feed impurity removal wind force becomes smaller, thereby realizing the adjustment of the feed air volume size to adapt to the impurity removal of different types of materials.

[0017] To solve the dust removal technical problem, the present invention adopts the following technical solutions. A main air screen dust removal mechanism is arranged at the outlet of the second air duct.

[0018] To solve the technical problem of poor air separation and impurity removal effect caused by uneven discharge of the screening mechanism, the present invention adopts the following technical solutions. The screening mechanism includes a screening chamber, a sieve body is arranged in the screening chamber from top to bottom, and the material outlet of the sieve body is communicated with the main discharge channel; A material outlet of the sieve body is provided with a material leveling and distributing mechanism for ensuring the uniformity of the flowing material, enabling the air passage to pass through the material layer for air separation, and ensuring the impurity removal effect.

[0019] To solve the technical problem of how to implement the material leveling and distributing mechanism, the present invention adopts the following technical solution that the material leveling and distributing mechanism is a flexible baffle.

[0020] To solve the technical problem of how to implement the material distributing mechanism, the present invention adopts the following technical solution that the material leveling mechanism includes: A first discharge baffle; A second discharge baffle located below the first discharge baffle; the second discharge baffle is arranged on the screening chamber via a fourth rotating shaft, and a discharge adjusting weight is arranged on the fourth rotating shaft outside the screening chamber. By using the lever principle and relying on the self-weight of the discharge adjusting weight, gravity self-adjusting material distribution is carried out on the discharged material.

[0021] To further solve the technical problem of poor air separation and impurity removal effect, the present invention adopts the following technical solution that auxiliary air suction interfaces are arranged in parallel on each sieve body, and the auxiliary air suction interfaces are respectively connected to an auxiliary air network dust removal mechanism, so as to form a negative pressure in the area of the auxiliary air suction interfaces, ensure the sealing performance of the screening mechanism, and simultaneously clean and remove local light impurities and dust. Description of the Drawings

[0022] Figure 1 is the front view of the air separation and impurity removal device of the present invention; Figure 2 is the rear view of the air separation and impurity removal device of the present invention; Figure 3 is the side view of the air separation and impurity removal device of the present invention; Figure 4 is Figure 3 the sectional view taken along A-A in Figure 5 is Figure 3 the sectional view taken along B-B in Figure 6 is the top view of the air separation and impurity removal device of the present invention; Figure 7 is the bottom view of the air separation and impurity removal device of the present invention; Figure 8 is the structural schematic diagram of the upper air suction chamber of the air separation and impurity removal device of the present invention; Figure 9 is the sectional view of the upper air suction chamber of the air separation and impurity removal device of the present invention; In the figure: 10 Air separation and impurity removal device; 100 Upper air suction chamber; 101 First air duct; 102 Second air duct; 1020 Second air duct outlet; 103 Feed adjusting air damper; 104 Auxiliary air suction interface; 200 Screening mechanism; 210 Feeding assembly; 220 Upper sieve assembly; 221 Upper sieve body; 222 Upper sieve material outlet; 223 Discharge baffle; 224 Second discharge baffle; 225 Fourth rotating shaft; 226 Third adjusting rod; 227 Discharge baffle adjusting weight; 230 Lower sieve assembly; 231 Lower sieve body; 232 Lower sieve material outlet; 233 Lower material leveling and distributing mechanism; 241 Power device; 242 Drive system; 260 Flexible hanging device; 270 Main discharge channel; 271 Main discharge channel outlet; 281 Small impurity outlet; 282 Large impurity outlet; 300 Rear air suction chamber; 301 Discharge adjusting air damper; 302 Pointer scale; 303 Air passage adjusting plate; 304 Air passage adjusting screw; 305 Discharge adjusting knob; 306 Feed adjusting knob; 307 Discharge adjusting pull rod; 308 Feed adjusting pull rod; 320 Air suction air duct; 321 First air supply port; 322 Second air supply port; 330 Discharge impurity removal air duct; 400 Feeding mechanism; 410 Feeding chamber; 411 First material flow baffle; 412 Second material flow baffle; 413 Third material flow baffle; 414 Wear-resistant plate; 415 Feed inlet; 416 Discharge outlet; 417 Maintenance door; 420 Self-adjusting vibration feeding assembly; 421 Vibration feeding plate; 422 Eccentric assembly; 4221 Eccentric bushing; 4222 Eccentric block; 4223 Spacer sleeve; 423 Bearing assembly; 424 Second rotating shaft; 425 First rotating shaft; 426 Pulling ear; 427 Adjusting suspension rod; 428 First adjusting rod; 429 Feeding gap adjusting weight; 430 Feed secondary material leveling assembly; 431 Feed baffle; 432 Third rotating shaft; 433 Feed baffle adjusting weight; 434 Second adjusting rod; 440 Feed impurity removal air duct; 450 Feed air separation area; 500 Settling and impurity removal mechanism, 510 Discharge settling and impurity removal mechanism; 511 First settling chamber; 512 First impurity removal auger; 520 Feed settling and impurity removal mechanism; 521 Second settling chamber; 522 Second impurity removal auger; 530 Driving mechanism; 540 Synchronous pulley mechanism; 541 Synchronous pulley; 542 Synchronous belt. Detailed implementation manners

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] For screening products, the evenness of material distribution on the screen surface and the feeding stability play a crucial role in the screening efficiency, and the screening efficiency is also one of the important indicators reflecting the screening products.

[0025] The screening efficiency of the equipment cannot be maximized. Improving the screening efficiency is the key and a powerful manifestation of competitiveness. The screening efficiency is closely related to the evenness of material distribution on the screen surface and the thickness of the material layer. How to improve the evenness of material distribution on the screen surface is also a bottleneck at present.

[0026] At present, most of the feeding systems on screening equipment adopt the form of fixed baffles. Through the distribution of different forms of baffles, physical material equalization is carried out on the material entering the screen. This form of material distribution is easily restricted by its own structural form, the stability of instantaneous material flow, and the feeding angle, resulting in uneven material distribution on the screen surface, and further affecting the screening efficiency and production capacity of the whole machine. At present, the feeding evenness in the market cannot be automatically adjusted and needs to be manually adjusted. It cannot automatically adjust the feeding evenness and the thickness of the material layer according to the size of the instantaneous material flow. Most of them adopt the form of multiple baffles, which has a great impact on the feeding angle and the stable inflow of materials, thus directly affecting the screening efficiency and impurity removal (dust) situation of the equipment.

[0027] To solve the above technical problems, this embodiment provides a pneumatic separation and impurity removal device 10. As Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 shown, the pneumatic separation and impurity removal device 10 includes a screening mechanism 200, a feeding mechanism 400, and a pneumatic separation and impurity removal mechanism.

[0028] As Figure 1 、 Figure 2 and Figure 4 shown, the screening mechanism 200 mainly includes a feeding assembly 210, an upper screen body assembly 220, a lower screen body assembly 230, a power device 241, a drive system 242, and a main discharge channel 270.

[0029] The upper screen body assembly 220 includes an upper screen body main body 221 and an upper screen body material outlet 222.

[0030] In one embodiment, an upper material distribution mechanism is provided at the upper sieve body material outlet 222. In one embodiment, the upper material leveling mechanism includes a first discharge baffle 223 and a second discharge baffle 224. The first discharge baffle 223 is fixedly arranged. The second discharge baffle 224 is located downstream of the first discharge baffle 223. The second discharge baffle 224 is arranged on the screening cavity via a fourth rotating shaft 225, and a discharge baffle adjusting weight 226 is arranged on the fourth rotating shaft 225 outside the screening cavity. Using the lever principle, relying on the self-weight of the discharge baffle adjusting weight, gravity self-adjusting material distribution is performed on the discharged material to ensure that the flowing material is uniform, enabling the air passage to pass through the material layer for air separation, and achieving the optimal impurity removal effect.

[0031] The lower sieve body assembly 230 includes a lower sieve body main body 231 and a lower sieve body material outlet 232.

[0032] In one embodiment, a lower material distribution mechanism 233 is provided at the lower sieve body material outlet 232. In this embodiment, the lower material distribution mechanism 233 is fixedly arranged on the lower sieve body material outlet 232 and uses a flexible material baffle. The lower material distribution mechanism 233 can also be adjusted and fixed by a rotating shaft or pressed by the gravity of a weight. For example: The lower material distribution mechanism 233 can adopt a gravity type adjusting device, including a discharge baffle, a rotating shaft, an adjusting rod, and a discharge baffle adjusting weight.

[0033] The upper sieve body assembly 220, the power device 241, and the lower sieve body assembly 230 are fixed into an integral structure by bolts, and are hoisted on the frame by a flexible hanging device 260, and the whole is driven by a drive system 242 to perform self-balanced inertial rotary screening operation.

[0034] As Figures 1-4 shown, a feeding mechanism 400 is arranged on the feeding component 210 for uniform feeding. The feeding mechanism 400 includes a feeding chamber 410, a self-adjusting vibrating feeding device 420, and a feeding secondary material leveling component 430.

[0035] A material flow baffle assembly is arranged in the feeding chamber 410. Specifically, as Figure 8 shown, the material flow baffle assembly is arranged below the feeding port 415 of the feeding chamber. The material flow baffle assembly includes a first material flow baffle 411, a second material flow baffle 412, and a third material flow baffle 413. The first material flow baffle 411 is vertically arranged in the feeding chamber 410. An inspection door 417 is installed on the feeding chamber 410. The second material flow baffle 412 is opposite to the first material flow baffle 411 and is inclinedly arranged in the feeding chamber 410. The third material flow baffle 413 is inclinedly arranged at the bottom of the feeding chamber 410.

[0036] As Figure 4 、 Figure 8 、 Figure 9As shown in the figure, the self-regulating vibration feeding device 420 includes a vibrating material plate 421, an eccentric assembly 422, a bearing assembly 423, a second rotating shaft 424, a first rotating shaft 425, a pulling ear 426, an adjusting suspension rod 427, a first adjusting rod 428, and a feeding gap adjusting weight 429.

[0037] The second rotating shaft 424 is rotatably arranged on the feeding chamber 410. The second rotating shaft 424 is connected to the driving mechanism 530 via a synchronous pulley mechanism 540. The eccentric assembly 422 is symmetrically arranged at both ends of the second rotating shaft 424. The eccentric assembly 422 includes an eccentric bushing 4221 and an eccentric block 4222. The eccentric block 4222 is arranged on the second rotating shaft 424. The eccentric bushing 4221 is arranged on the second rotating shaft 424 and is located outside the eccentric block 4222. A spacer sleeve 4223 is installed between the eccentric block 4222 and the eccentric bushing 4221. A bearing assembly 430 is installed on the eccentric bushing 4221. The bearing assembly 430 includes a bearing and a bearing seat, and the eccentric bushing 4221 is arranged in the bearing. The vibrating material plate 421 is installed on the bearing assembly 430. The vibrating material plate 421 is located downstream of the first material flow baffle 411; the vibrating material plate 421 is located above the third material flow baffle 413.

[0038] A material flow channel, that is, a feeding gap, is formed between the vibrating material plate 421 and the second material flow baffle 412, and the feeding gap can be automatically adjusted. The materials conveyed by the first material flow baffle 411, the vibrating material plate 421, and the second material flow baffle 412 are guided by the third material flow baffle 413 to the discharge port 416 of the feeding chamber 410.

[0039] The first rotating shaft 425 is rotatably arranged on the feeding chamber 410. One end of the first adjusting rod 428 is arranged on the first rotating shaft 425 outside the feeding chamber 410. First adjusting holes are arranged along the length direction of the first adjusting rod 428. The feeding gap adjusting weight 429 is arranged in the first adjusting hole, and the position of the feeding gap adjusting weight 429 in the first adjusting hole can be adjusted. One end of the adjusting suspension rod 427 is arranged on the first rotating shaft 425 inside the feeding chamber 410, and the other end of the adjusting suspension rod 427 is rotatably connected to the vibrating material plate 421.

[0040] In one embodiment, a feeding secondary material leveling assembly 430 is arranged inside the feeding chamber 410, including a feeding baffle 431, a third rotating shaft 432, a feeding baffle adjusting weight 433, and a second adjusting rod 434. The feeding baffle 431 is rotatably arranged at the discharge port 416 of the feeding chamber 410 via the third rotating shaft 432. Second adjusting rods 434 are respectively installed at both ends of the third rotating shaft 432 outside the feeding chamber 410. Second adjusting holes are arranged along the length direction of the second adjusting rod 434. The feeding baffle adjusting weight 433 is arranged in the second adjusting hole, and the position of the feeding baffle adjusting weight 433 in the second adjusting hole can be adjusted. There are 2 feeding baffle adjusting weights 433, which are respectively located at both ends of the third rotating shaft 432.

[0041] By providing a self - regulating vibration feeding device, the present invention relies on the impact force of the material on the vibration plate and the gravity of the feeding gap adjusting weight itself to change the size of the vibration feeding gap in real time, so as to ensure that the feeding gap is automatically adjusted according to the size of the feeding. When the material flow is relatively small, the acting force of the material on the vibration plate is small. Under the action of the feeding gap adjusting weight, the gap becomes smaller, and the material will pass through the channel with a relatively small gap, resulting in a smaller layer thickness of the material. Under the action of the vibrating function, the material is evenly spread on the vibration plate and will quickly pass through this channel, realizing the function of uniform feeding in the case of a small material flow; when the material flow is relatively large, the acting force of the material on the vibrating plate is large, which will overcome the acting force of the feeding gap adjusting weight at this time, and the gap automatically becomes larger. At this time, the layer thickness of the material will become larger. Under the action of the vibrating function, the material will also be evenly spread on the vibration plate and quickly pass through this channel, realizing the function of uniform feeding in the case of a large material flow.

[0042] The present invention utilizes the secondary material - leveling component of the feeding mechanism and the material - leveling mechanism in the feeding component of the screening mechanism to form multiple material - leveling mechanisms, which perform multiple uniform distributions on the material flow, thereby ensuring the uniform distribution of the material on the sieve surface and further improving the screening effect.

[0043] The air - separation and impurity - removal mechanism includes an upper air - suction chamber 100 and a rear air - suction chamber 300. The upper air - suction chamber 100 is located at the top of the screening mechanism 200. A feeding mechanism 400 and a sedimentation and impurity - removal mechanism 500 are arranged in the upper air - suction chamber 100. An inlet impurity - removal air duct 440 is arranged in the feeding mechanism 400.

[0044] The rear air - suction chamber 300 is located on the discharge side of the screening mechanism 200. An air - suction air duct 320 and a discharge impurity - removal air duct 330 are arranged in the rear air - suction chamber 300. The main discharge channel outlet 271 is used as the air - suction air duct 320. A first air - supply port 321 and a second air - supply port 322 are respectively arranged on both sides of the main discharge channel outlet 271. The main discharge channel 270 is used as the discharge impurity - removal air duct 330.

[0045] In one embodiment, an air - path adjusting plate 303 is arranged in the discharge impurity - removal air duct 330, and the air - path adjusting plate 303 can move horizontally in the discharge impurity - removal air duct 330. Specifically, the air - path adjusting plate 303 is installed on the discharge impurity - removal air duct 330 via an air - path adjusting screw 304.

[0046] The sedimentation and impurity - removal mechanism 500 includes a discharge sedimentation and impurity - removal mechanism 510, an inlet sedimentation and impurity - removal mechanism 520, and a driving mechanism 530. The discharge sedimentation and impurity - removal mechanism 510 is communicated with the main discharge channel 270 (i.e., the air - suction air duct 320).

[0047] As Figure 4As shown, the discharge sedimentation and impurity removal mechanism 510 includes a first sedimentation chamber 511. As Figure 9 shown, a first impurity removal auger 512 is arranged in the first sedimentation chamber 511. A second air duct 102 is arranged at the top of the discharge sedimentation and impurity removal mechanism 510. The second air duct outlet 1020 is externally connected to the main air network dust removal system. In one embodiment, a discharge regulating air damper 301 is arranged on the second air duct 102 for controlling the overall air volume. The discharge regulating air damper 301 is located in the rear air suction chamber 300. The discharge regulating air damper 301 is connected to a discharge regulating knob 305 via a discharge regulating pull rod 307. By rotating the discharge regulating knob, the discharge regulating pull rod rotates, changing the angle of the discharge regulating air damper: when the damper opening becomes smaller, the corresponding air volume becomes smaller, and the overall impurity removal wind force becomes smaller, thereby realizing the adjustment of the air volume at the discharge (i.e., the air volume entering the air suction duct as a whole), and adapting to the impurity removal of different types of materials.

[0048] In one embodiment, a feed regulating air damper 103 is arranged on the second air duct for controlling the feed air volume. The feed regulating air damper 103 is connected to a feed regulating knob 306 via a feed regulating pull rod 305. By rotating the feed regulating knob, the feed regulating pull rod rotates, changing the angle of the feed regulating air damper: when the feed regulating air damper opening becomes larger, a partial short circuit of the feed air volume occurs, the corresponding feed air volume becomes smaller, and the feed impurity removal wind force becomes smaller, thereby realizing the adjustment of the feed air volume and adapting to the impurity removal of different types of materials.

[0049] By rotating the feed regulating knob 306 to drive the feed regulating pull rod 308 to rotate, changing the angle of the feed regulating air damper 103. When rotating counterclockwise in the figure, the damper opening becomes larger, a partial short circuit of the feed air volume occurs, the corresponding feed air volume of the feed part becomes smaller, and the feed impurity removal wind force becomes smaller, thereby realizing the adjustment of the air volume at the feed and adapting to the impurity removal of different types of materials. In addition, the internal components can be repaired and replaced through the inspection door 417.

[0050] As Figure 2 and Figure 4 shown, by rotating the discharge regulating knob 305 to drive the discharge regulating pull rod 307 to rotate, changing the angle of the discharge regulating air damper 301. When rotating counterclockwise in the figure, the damper opening becomes smaller, the corresponding air volume becomes smaller, and the overall impurity removal wind force becomes smaller, thereby realizing the adjustment of the air volume at the discharge (the air volume entering the equipment as a whole) and adapting to the impurity removal of different types of materials. The pointer scale 309 indicates the scale sizes of the feed air damper and the discharge air damper, facilitating the intuitive adjustment of the air volume in the local area by humans.

[0051] As Figure 4 shown, the feed sedimentation and impurity removal mechanism 520 includes a second sedimentation chamber 521. As Figure 9As shown, a second impurity removal auger 522 is arranged in the second settling chamber 521. A first air duct 101 is arranged on the top of the feed settling impurity removal mechanism 520.

[0052] In one embodiment, the driving mechanism 530 is preferably a reduction motor. The driving mechanism 530 is connected to the first row of miscellaneous augers 512 and the second row of miscellaneous augers 522 respectively via a synchronous pulley mechanism 540. The synchronous pulley mechanism 540 includes a matching synchronous belt 542 and a synchronous wheel 541. The synchronous wheel 541 is installed at the end of the dragon shaft of the first row of miscellaneous augers 512 and the second row of miscellaneous augers 522. The synchronous pulley mechanism 540 can also be replaced by other transmission forms such as chain drive. The auger drives the synchronous belt 542 through the driving mechanism 530 to drive the synchronous pulley 541 to drive and rotate, thereby realizing the auger's debris removal function.

[0053] In one embodiment, Figure 2 , Figure 4 As shown, an auxiliary suction interface 104 is provided on the screening mechanism 200, the interior of which is connected to the screen body, and an external auxiliary air network dust removal mechanism (which can be connected in parallel with the main air network) is connected, so that negative pressure is formed in the auxiliary suction interface area to ensure the sealing of the screening mechanism, and at the same time clean and remove local light impurities and dust.

[0054] In one embodiment, the auxiliary air suction interface 104 can be arranged in parallel in multiple ways according to the upper and lower screen bodies, and in this embodiment, one is arranged. Each screen body is provided with an auxiliary air suction interface 104 in parallel, and the auxiliary air suction interface 104 is respectively connected to the auxiliary air net dust removal mechanism.

[0055] The flow of materials and the air path in the air separation and impurity removal device of the present invention include four paths, and their respective path diagrams are shown in FIG. Figure 4 As indicated in the figure. Figure 4 , explaining the working principle and process of the wind separation and impurity removal device of the present invention: (1) Material flow path: The material enters the feeding mechanism 400 in the upper suction chamber 100 through the front process chute and the feed port 415, and is evenly spread through the self-adjusting vibrating feeding assembly 420. The material flowing through is evenly distributed again through the feeding secondary leveling assembly 430, so that the material entering the feeding assembly 210 is evenly distributed, and the material is screened by the screening mechanism 200, and about half of the material passes through the upper screen body 221. It enters the rear suction chamber 300 through the upper screen body material outlet 222; the other half of the material passes through the lower screen body 231, the lower screen body outlet 232, and the lower material leveling mechanism 233, and enters the rear suction chamber 300 after being screened and evenly spread, and then enters the downstream process device through the discharge port 271 of the main discharge channel 270 after being aggregated. The large impurities after screening are discharged through the large impurities outlet 282, and the small impurities after screening are discharged through the small impurities outlet 281; (2)Impurity removal air separation paths 1 and 2: The first air supply opening 321 and the second air supply opening 322 provide the air inlet source for the air path. They successively pass through the main materials discharged from the lower sieve body and the main materials discharged from the upper sieve body, carry away the light impurities and dust therein, settle through the area at the first impurity discharge auger 512, and discharge the impurities and dust through the auger arranged therein. The air is led to the feeding air separation area 450 through the upper air suction chamber 100, as shown in the figure. Since there are the most impurities and dust at the feeding place, after the air path passes through the evenly spread material layer, most of the impurities and dust are carried out (the main material generally has a larger bulk density and forms a self-settling effect in this area and enters the equipment feeding assembly 210). Relying on the self-regulating vibration feeding assembly 420 and the corresponding feeding gap therein, the more evenly the feeding is, the better the air separation and impurity removal effect. Most of its impurities and dust settle through the area at the second impurity discharge auger 521, and are discharged in large quantities through the auger arranged therein. The main air path, through the structural layout in the upper air suction chamber 100, leads the air (containing some impurities and dust) to the discharge regulating air door 301, and leads the overall air path to the external dust collector and fan through the external air net for targeted dust settlement, so as to achieve the effect of efficient cyclic cleaning.

[0056] (3)Impurity removal air separation path 3: In addition, an auxiliary air suction interface 104 is provided above the sieve body. Through the external auxiliary air net (which can be connected in parallel with the main air net), a negative pressure is formed in this area to ensure the tightness of the sieve body, and at the same time, local light impurities and dust are cleaned and dust removed. The auxiliary air suction can be arranged in multiple parallel layouts according to the upper and lower sieve bodies, and 1 is temporarily arranged on this equipment.

[0057] The present invention utilizes the circulating system of the air path and the unique structural layout of the air path, can efficiently handle the impurities and dust in the material. The overall device needs to be externally connected with an air net (including a dust removal system), controls the overall air volume size by using the discharge air door, and controls the size of the feeding air door by using the feeding air door, and can remove the light impurities (impurities with a lighter specific gravity) and dust in the material to the greatest extent. This device relies on the self-regulating vibration feeding assembly, the material leveling and distributing mechanism with rear air suction, the layout setting of the overall structure and the overall air suction and dust removal system in the upper air suction chamber, and can better make the air path pass through the material layer with a uniform thickness, and efficiently clean the impurities and dust in the material. Its special material leveling mechanism and compact air path structure make its operation simple, the utilization rate of wind energy high, the cleaning effect better, and the energy consumption lower while improving the overall impurity removal rate.

[0058] The present invention relies on a circulating suction arrangement to perform the first cleaning of the main material after screening, mainly cleaning the light impurities and dust mixed in the main material, and then again uses the feed air separation area to air separate the material at the feed point and remove impurities, and uses different augers to discharge the corresponding impurities out of the equipment. Through centralized collection and post-processing, the wind energy utilization is higher, which can make the impurities and dust in the material cleaned more cleanly and make its overall energy consumption lower.

[0059] The material mixing mechanism and the air path mechanism in the upper air suction chamber and the rear air suction chamber of the present invention make the air path structure more compact, more optimal and have a better cleaning effect.

[0060] The high-efficiency air separation and impurity removal device of the present invention is mainly suitable for feed, food, grain and oil processing, medicine and chemical industries. The device mainly utilizes the circulation system and the structural layout of the air path to efficiently process impurities and dust in the material. The overall device needs an external wind network (including a dust removal system), uses the discharge damper to control the overall air volume, and uses the feed damper to control the feed damper size, so as to remove light impurities (impurities with lighter specific gravity) and dust in the material. The device relies on the self-adjusting vibrating feeding device and the rear suction uniform material distribution device in the upper suction chamber, combined with the overall structural layout and the overall suction and dust removal system, so that the air path can better pass through a material layer of uniform thickness and efficiently clean impurities and dust in the material. The special material leveling mechanism and compact air path structure in the device make it simple to operate, high in wind energy utilization, better in cleaning effect, and lower in energy consumption while improving the overall impurity removal rate.

[0061] The high-efficiency air separation and impurity removal device is mainly composed of an upper suction chamber, a screening mechanism, and a rear suction chamber. It mainly utilizes the circulation system and the structural layout of the air path to efficiently handle impurities and dust in the material. The overall device requires an external wind network (including a dust removal system). The discharge regulating damper 301 is used to control the overall air volume, and the feed regulating damper 103 is used to control the feed damper size. It can remove light impurities (impurities with lighter specific gravity) and dust in the main material after screening. The device is not limited to screening products, and can also be used in other grain processing products. It is mainly suitable for feed, food, grain and oil processing, medicine, and chemical industries. The equipment utilizes the self-adjusting vibrating feeding component 102 in the upper suction chamber 100 and the uniform material distribution mechanism of the rear suction, combined with the overall structural layout and the overall suction and dust removal system, which can better enable the air path to pass through a material layer of uniform thickness, clean up impurities and dust in the material, and improve the overall impurity removal rate.

[0062] The above embodiments are only for illustrating the technical features and concepts of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and it should not be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and embodiments of the present invention should be covered within the protection scope of the present invention.

Claims

1. The wind separation and impurity removal device is characterized by: include: The screening mechanism comprises a screening chamber, on which a feed assembly and a main discharge channel are arranged; A feeding mechanism, arranged on the feeding assembly, for uniform feeding; Wind separation and impurity removal mechanism, including: An air suction duct, using the discharge port of the main discharge channel as an air suction duct; A discharge and impurity removal air duct, using the main discharge channel as a discharge and impurity removal air duct; The sedimentation and impurity removal mechanism comprises a feed sedimentation and impurity removal mechanism and a discharge sedimentation and impurity removal mechanism, wherein the discharge sedimentation and impurity removal mechanism is connected to the main discharge channel; a first air duct is arranged on the top of the feed sedimentation and impurity removal mechanism; a second air duct is arranged on the top of the discharge sedimentation and impurity removal mechanism, and a discharge damper is arranged on the second air duct; A feed impurity removal air duct is arranged in the feeding mechanism; The air suction duct provides the air inlet source, and the wind passes through the main material of the discharge impurity removal duct from bottom to top, taking away light impurities and dust, and settles and discharges them through the discharge sedimentation and impurity removal mechanism, thereby realizing the discharge air separation and impurity removal; The wind from the discharge sedimentation and impurity removal mechanism passes through the first air duct to the feed impurity removal air duct, and the wind passes through the evenly fed feed to take away light impurities and dust, and then passes through the feeding mechanism from bottom to top to enter the feed sedimentation and impurity removal mechanism to settle and discharge light impurities and dust, thereby achieving feed air separation and impurity removal; The wind from the feed settling and impurity removal mechanism is discharged through the second air duct.

2. The wind separation and impurity removal device according to claim 1 is characterized in that: The second air duct is provided with a discharge regulating damper for controlling the overall air volume; the discharge regulating damper is connected to the discharge regulating knob via a discharge regulating pull rod; By rotating the discharge adjustment knob to drive the discharge adjustment rod to rotate, the angle of the discharge adjustment damper can be changed: the damper opening becomes smaller, the corresponding air volume becomes smaller, and the overall impurity removal wind force becomes smaller, thereby achieving the adjustment of the air volume at the discharge, that is, the overall air volume entering the suction duct, to adapt to the impurity removal of different types of materials.

3. The wind separation and impurity removal device according to claim 1 is characterized in that: An auxiliary air suction interface is provided on the screening mechanism for connecting to an auxiliary air net dust removal mechanism, so that negative pressure is formed in the auxiliary air suction interface area, thereby ensuring the sealing of the screening mechanism and cleaning and removing local light impurities and dust.

4. The wind separation and impurity removal device according to claim 1 is characterized in that: An air passage regulating plate is arranged in the discharge impurity removal air passage, and the air passage regulating plate can move laterally in the discharge impurity removal air passage; A first air supply port and a second air supply port are respectively arranged on both sides of the air inlet of the air suction duct.

5. The wind separation and impurity removal device according to claim 1 is characterized in that: The feeding mechanism comprises: A feeding cavity, wherein a material flow baffle assembly is arranged in the feeding cavity; The self-adjusting vibrating feeding assembly comprises: a vibrating material plate rotatably arranged on the feeding cavity; a material flow channel is formed between the vibrating material plate and the material flow baffle assembly; A first rotating shaft, rotatably disposed on the feeding chamber; An adjusting suspension rod, one end of which is arranged on the first rotating shaft in the feeding chamber, and the other end of which is rotatably connected to the vibrating material plate; a first adjusting rod, one end of which is disposed on the first rotating shaft, and a first adjusting hole is disposed on the first adjusting rod along the length direction; A feeding gap adjusting weight is arranged in the first adjusting hole, and the position of the feeding gap adjusting weight in the first adjusting hole is adjustable.

6. The wind separation and impurity removal device according to claim 5 is characterized in that: The self-regulating vibratory feeding assembly also includes: A second rotating shaft, rotatably disposed on the feeding chamber; An eccentric component, on which the vibrating plate is arranged; the eccentric component is symmetrically arranged at both ends of the second rotating shaft; the eccentric component comprises: An eccentric block, arranged on the second rotating shaft; An eccentric sleeve is arranged on the second rotating shaft, and the eccentric sleeve is located outside the eccentric block; a spacer is arranged between the eccentric block and the eccentric sleeve; A bearing assembly is arranged on the eccentric sleeve, and the vibrating material plate is arranged on the bearing assembly; the bearing assembly includes a bearing and a bearing seat, and the eccentric sleeve is arranged in the bearing.

7. The wind separation and impurity removal device according to claim 5 is characterized in that: A secondary material refining component is arranged in the feeding cavity, including: A feed baffle is rotatably arranged at the discharge port of the feeding cavity via a third rotating shaft; a second adjusting rod, one end of which is disposed on the third rotating shaft, and a second adjusting hole is disposed on the second adjusting rod along the length direction; The feed baffle plate adjusting weight is arranged in the second adjusting hole, and the position of the feed baffle plate adjusting weight in the second adjusting hole is adjustable.

8. The wind separation and impurity removal device according to claim 5 is characterized in that: The material flow baffle assembly is arranged below the feed inlet of the feeding cavity, and the material flow baffle assembly comprises: A first material flow baffle is vertically arranged in the feeding cavity; the vibrating material plate is located downstream of the first material flow baffle; a second material flow baffle, opposite to the first material flow baffle and obliquely arranged in the feeding cavity; The third material flow baffle is obliquely arranged at the bottom of the feeding cavity and below the vibrating material plate. The third material flow baffle is used to guide the materials conveyed by the first material flow baffle, the vibrating material plate and the second material flow baffle to the discharge port of the feeding cavity.

9. The wind separation and impurity removal device according to claim 5 is characterized in that: The discharging, settling and impurity removal mechanism comprises a first settling chamber and a first impurity removal auger arranged in the first settling chamber; The feed settling and impurity removal mechanism comprises a second settling chamber and two impurity removal augers arranged in the second settling chamber; The driving mechanism is respectively connected to the first row of augers, the second row of augers, and the first rotating shaft via a synchronous belt pulley mechanism.

10. The wind separation and impurity removal device according to claim 1 is characterized in that: The second air duct is provided with a feed regulating damper for controlling the amount of air entering the feed, and the feed regulating damper is connected to the feed regulating knob via a feed regulating pull rod; By rotating the feed adjustment knob to drive the feed adjustment rod to rotate, the angle of the feed adjustment damper can be changed: the opening of the feed adjustment damper becomes larger, the feed air volume is partially short-circuited, the corresponding feed air volume becomes smaller, and the feed impurity removal wind force becomes smaller, thereby realizing the adjustment of the feed air volume to adapt to the impurity removal of different types of materials.

11. The wind separation and impurity removal device according to claim 2 is characterized in that: A main air network dust removal mechanism is provided at the outlet of the second air duct.

12. The wind separation and impurity removal device according to claim 1 is characterized in that: A sieve body is arranged from top to bottom in the screening chamber, and a material outlet of the sieve body is connected to the main discharge channel; The material outlet of the screen body is provided with a material distribution mechanism for ensuring that the material flowing through is uniform, so that the air path passes through the material layer for air selection, thereby ensuring the impurity removal effect.

13. The wind separation and impurity removal device according to claim 12 is characterized in that: The material leveling and distributing mechanism is a flexible baffle.

14. The wind separation and impurity removal device according to claim 12, characterized in that: The material sparging mechanism comprises: The first discharging baffle; The second discharging baffle is located below the first discharging baffle; the second discharging baffle is arranged on the screening chamber via the fourth rotating shaft, and a discharging baffle adjusting weight is arranged on the fourth rotating shaft outside the screening chamber. The principle of lever is utilized and the deadweight of the discharging baffle is adjusted to perform gravity self-adjusting sorting on the discharged materials.

15. The wind separation and impurity removal device according to claim 12, characterized in that: Auxiliary air suction interfaces are arranged in parallel on each of the sieve bodies, and the auxiliary air suction interfaces are respectively connected to auxiliary air net dust removal mechanisms, so that negative pressure is formed in the auxiliary air suction interface area, ensuring the sealing of the screening mechanism, and at the same time cleaning and removing local light impurities and dust.

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