A conveying device for corn processing

Abstract

The application discloses a kind of conveying equipment for corn processing, it is related to corn processing conveying technical field, including rack, the side of rack is equipped with drive assembly, the top of rack is provided with buffer feeding mechanism, the output end below buffer feeding mechanism is provided with double-layer spiral conveying mechanism;Buffer feeding mechanism includes feeding round roller, the outer wall of feeding round roller is uniformly fixedly connected with several shoveling protrusions, several shoveling protrusions are reserved with storage interval area between, by the synchronous rotation of shoveling protrusion, corn raw material is stably conveyed to double-layer spiral conveying mechanism with interval, by the cooperation structure of introduced feeding round roller and shoveling protrusion, the continuity and stability of corn conveying are significantly improved, during buffer feeding process, annular shoveling protrusion of the outer wall of feeding round roller is equidistantly distributed, can relatively evenly scrape, temporary storage is carried out to dry corn kernel in feeding frame, realizes interval stable ration feeding.

Description

Technical Field

[0001] This invention relates to the field of corn processing and conveying technology, and specifically to a conveying device for corn processing. Background Technology

[0002] At present, with the refined development of the grain processing industry, the corn deep processing industry chain has put forward higher requirements for the continuity, cleanliness and stability of the raw material transportation link. In the corn grits making and milling processes, the main objects to be transported are dry and clean corn kernels. The typical process is as follows: after the cleaning screen or destoner in the previous process completes the removal of impurities, the corn kernels enter the conveying equipment and are then transported to the peeling machine, grits making machine or temporary storage silo and other downstream process equipment. The performance of the conveying equipment directly affects the efficiency and product quality of the entire production line.

[0003] However, the screw conveyor equipment currently used in the corn processing industry still has significant shortcomings in terms of structural design and functional integration, making it difficult to adapt to the conveying characteristics of dry corn kernels. How to achieve stable feeding, efficient dust removal, and low breakage conveying has become a key issue restricting the improvement of the automation level of corn deep processing production lines.

[0004] In existing corn conveying production processes, conventional single-tube screw conveyors are mostly used for material transport. The equipment mainly relies on a motor-driven screw shaft to push corn kernels, which presents many prominent problems in actual production: 1. Unstable feeding and bridging blockage are prominent issues: In traditional equipment, the hopper and screw conveyor are directly connected, and corn kernels are prone to forming "bridging" or "rat holes" at the bottom of the hopper, resulting in intermittent feeding and an inability to provide a stable supply of raw materials for subsequent processes (such as peeling machines and grits making machines). At the same time, the connection between the hopper and the screw lacks a buffer structure, and corn kernels are prone to accumulate locally, causing blockage of the conveyor channel, requiring machine shutdown for cleaning, which seriously affects production efficiency.

[0005] 2. Severe dust pollution during the conveying process: Dry corn kernels generate a large amount of dust during high-speed screw conveying. Existing equipment is mostly open or semi-closed structure, lacking effective dust collection methods. This not only causes material loss but also increases the dust removal pressure in the workshop, bringing safety hazards. Although some equipment uses external fans for dust removal, the structure is complex, energy consumption is high, and it cannot achieve uniform dust removal along the process, which easily leads to local dust residue.

[0006] 3. The buffer structure is prone to jamming and is inconvenient to clean and maintain: Although some equipment has a buffer structure at the bottom of the hopper, most of them are rigid material feeding designs, which can easily cause the corn kernels to be squeezed and broken. In addition, dust and impurities are easy to remain in the buffer chamber, which will breed bacteria in the long term and affect the hygiene level of the corn raw materials. At the same time, the buffer structure and the screw conveyor lack linkage control, making it difficult to match the feed rate and the conveying rate, which further aggravates the blockage and jamming problems.

[0007] Therefore, in view of this, the present invention proposes a conveying device for corn processing to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a conveying device for corn processing, thereby resolving the technical issues raised in the background section.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a conveying device for corn processing, used for continuous conveying of corn raw materials, including a frame, a drive assembly mounted on the side of the frame, a buffer feeding mechanism disposed above the frame, and a double-layer spiral conveying mechanism disposed below the output end of the buffer feeding mechanism. The buffer feeding mechanism includes a feeding roller, and a plurality of material-pushing protrusions are uniformly fixedly connected to the outer wall of the feeding roller. A material storage interval area is reserved between the plurality of material-pushing protrusions. When the drive assembly drives the feeding roller to rotate, the corn raw materials are smoothly conveyed to the double-layer spiral conveying mechanism at intervals through the synchronous rotation of the material-pushing protrusions.

[0010] Furthermore, the feeding protrusion is an annular protrusion structure, and several annular feeding protrusions are equidistantly distributed along the axial direction of the feeding roller. The storage interval area is an annular groove between two adjacent annular feeding protrusions, which is used to temporarily store corn raw materials.

[0011] Furthermore, the drive assembly includes a drive motor, a coupling, and a screw shaft. The output end of the drive motor is coaxially connected to the screw shaft via the coupling. The screw shaft has a propeller-type structure and is used to push corn raw materials within the conveying channel.

[0012] Furthermore, the buffer feeding mechanism includes a feeding frame, the upper half of which is a rectangular hopper and the lower half of which is a tapered funnel outlet, and a buffer roller is rotatably connected at the junction of the rectangular hopper and the funnel outlet of the feeding frame.

[0013] Furthermore, the buffer roller is a hollow cylindrical structure, and the side wall of the buffer roller is connected to a liquid inlet pipe. Inclined baffles are uniformly fixed to the outer wall of the buffer roller. Aqueous solution is supplied to the inside of the buffer roller through the liquid inlet pipe. In the initial state, the liquid level of the aqueous solution inside the buffer roller is lower than the center horizontal plane of the buffer roller. When the buffer roller rotates, the baffles can stir the aqueous solution to rise and impact downward under the action of gravity.

[0014] Furthermore, a transmission component is assembled between the buffer roller and the drive motor. The transmission component includes a driven roller and a driving roller, with a radius ratio of 3:1 between the driven roller and the driving roller. A transmission belt connects the driven roller and the driving roller. The driven roller is fixedly connected to the end of the buffer roller, and the driving roller is fixedly connected to the outer wall of the output shaft of the drive motor. The drive motor drives the buffer roller to rotate synchronously through the transmission component.

[0015] Furthermore, the double-layer spiral conveying mechanism includes an inner conveying pipe and an outer sleeve. The inner conveying pipe and the outer sleeve are provided with conveying feed troughs at the positions corresponding to the feed box tapering funnel outlets, and a conveying discharge trough is provided below the end of the inner conveying pipe and the outer sleeve away from the conveying feed trough.

[0016] Furthermore, the inner conveying pipe has uniformly opened air-permeable micropores on its wall, all of which are designed with an inclined shape, and the inner wall of each air-permeable micropore is equipped with a fine-pore filter screen.

[0017] Furthermore, the outer sleeve is fitted over the inner conveying pipe, and the two form a continuous negative pressure interlayer channel through breathable micropores. During the rotational conveying process, the axial air-guiding effect generated inside the inner conveying pipe is used to automatically create negative pressure in the negative pressure interlayer channel, drawing the dust generated during the conveying of corn raw materials into the interlayer channel through the breathable micropores.

[0018] Furthermore, an extension pipe is fitted on the side of the outer sleeve near the conveying outlet trough. The extension pipe is connected to the negative pressure interlayer channel. Inside the extension pipe, there is a fan blade for enhancing the airflow in the interlayer channel, and the fan blade is coaxially connected to the spiral shaft.

[0019] Compared with the prior art, the beneficial effects of the present invention are: (1) This device effectively solves the technical problems of unstable feeding and easy bridging in existing corn conveying equipment by introducing a feeding roller and a feeding protrusion. It significantly improves the continuity and stability of corn conveying. During the buffer feeding process, the annular feeding protrusions on the outer wall of the feeding roller are evenly distributed. With the annular storage groove between adjacent protrusions, the dry corn kernels in the feeding frame can be scraped and temporarily stored relatively evenly, so as to achieve stable quantitative feeding at intervals. At the same time, the transmission component controls the speed of the buffer roller to one-third of the speed of the spiral shaft by matching the radius of the driven wheel and the driving wheel in a three-to-one ratio. Combined with the design that the area occupied by the feeding protrusion is larger than the area of ​​the conveying feed trough, the control of "slow feeding and fast conveying" is realized, avoiding the blockage caused by a large number of corn kernels rushing into the conveying channel at an instant.

[0020] Most importantly, this device, through the synergistic structure of the hollow buffer roller and the inclined baffle, effectively solves the technical problems of inconvenient cleaning of the feeding structure, easy material retention and jamming, and heat generation during rotation, significantly improving the operational stability of the equipment. During the rotation of the buffer roller, the inclined baffle inside rotates synchronously with the roller. Combined with the initial liquid level being lower than the center horizontal plane, this continuously agitates and churns the liquid. When the baffle passes its highest point, the liquid, under the action of gravity, impacts the area corresponding to the annular storage groove on the inner wall of the buffer roller, achieving efficient impact on the corn kernels and dust retained in the groove, preventing corn kernel retention and jamming. Simultaneously, the liquid stored inside the buffer roller also... The buffer roller generates heat due to friction during prolonged high-speed rotation. The aqueous solution can quickly absorb this heat and dissipate it through its own flow, preventing high temperatures from affecting the service life of equipment components. In addition, the inlet pipe can replenish the aqueous solution at any time, ensuring a continuous and stable flushing and heat dissipation effect. No manual disassembly and cleaning is required, which avoids equipment failure caused by corn kernels getting stuck, reduces dust residue and bacterial growth, lowers manual maintenance costs, and further ensures the continuous and smooth buffer feeding process. It effectively solves the defects of existing buffer structures, such as cumbersome cleaning, easy jamming, poor hygiene, and heat generation during rotation, and improves the adaptability and practicality of the equipment.

[0021] (2) This device effectively solves the technical problem of serious dust pollution and the need to add dust removal equipment in the existing corn conveying equipment by introducing a double-layer spiral conveying mechanism and an integrated structure of breathable micropores. It significantly improves the cleanliness and environmental protection of the conveying process. During the spiral conveying process, the spiral shaft rotates at high speed and generates axial airflow like an "axial flow fan". With the breathable micropores on the inner conveying pipe wall, local vortices and pressure drops are formed at the orifice according to Bernoulli's principle, so that the interlayer between the inner conveying pipe and the outer sleeve forms a continuous negative pressure, which can efficiently suck the dust generated by the corn kernel conveying into the interlayer. At the same time, the inclined design of the breathable micropores and the fine pore filter screen can not only ensure that the dust enters the interlayer smoothly, but also prevent the corn kernels from leaking. The cooperation between the extension pipe and the fan blade enhances the airflow and realizes the directional and concentrated discharge of the dust-laden airflow. There is no need to add a fan, which reduces the operating energy consumption. It effectively solves the defects of dust overflow, raw material loss and workshop pollution of the existing equipment, takes into account both conveying efficiency and environmental protection requirements, and is suitable for the fine conveying requirements of dry and clean corn kernels. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the axial view of the three-dimensional structure of the present invention; Figure 2 This is a top view schematic diagram of the feeding module of the present invention; Figure 3 This is a side view of the internal structure of the feeding frame of the present invention. Figure 4 This is a three-dimensional axial view of the internal structure of the feeding frame of the present invention; Figure 5 This is a three-dimensional structural diagram of the transmission component of the present invention; Figure 6 This is an exploded view of a partial structure of the feeding module of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the annular protrusion of the present invention; Figure 8 This is a side view of the internal structure of the hollowed-out cylinder of the present invention. Figure 9 This is a schematic diagram of the three-dimensional structure of the outer pipe of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the inclined slot of the present invention; Figure 11 This is a side view of the structural diagram showing the positional relationship between the inner and outer pipes of the present invention.

[0023] The numbers on the map are: 1. Rack; 2. Drive assembly; 21. Drive motor; 22. Coupling; 23. Screw shaft; 3. Buffer feeding mechanism; 31. Feeding frame; 32. Buffer roller; 321. Liquid inlet pipe; 322. Baffle; 33. Transmission component; 331. Driven wheel; 332. Driving wheel; 333. Transmission belt; 34. Feeding roller; 35. Feeding protrusion; 4. Double-layer spiral conveyor mechanism; 41. Inner conveyor pipe; 42. Breathable micropores; 43. Outer sleeve; 44. Fan blade; 45. Extension pipe. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. It should be noted that the drive component 2 in this device is designed according to the existing technology. The drive motor 21 outputs constant rotational drive energy, and the coupling 22 realizes the rigid connection and power transmission between the output shaft of the drive motor 21 and the screw shaft 23, so as to drive the screw shaft 23 to rotate in the inner conveying tube 41 of the double-layer screw conveying mechanism 4, so as to push the corn raw material in the tube axially. Furthermore, the power selection, speed adjustment range, and installation and fixing method of the drive motor 21, the structural type, connection tolerance, and buffering and damping parameters of the coupling 22, the blade pitch, shaft diameter, material selection, and assembly support method of the screw shaft 23, as well as the electrical wiring and start-stop control logic of the drive motor 21, the disassembly and maintenance specifications of the coupling 22, and the fitting clearance between the screw shaft 23 and the bearing housing, are all existing technologies. Based on the general connection relationships, power transmission principles, and adaptability control requirements of these structures, they will not be elaborated further in the following sections.

[0025] Example 1: Please refer to Figure 1 - Figure 3 as well as Figure 6 As shown, a conveying device for corn processing is used for continuous conveying of corn raw materials. It includes a frame 1, a drive assembly 2 mounted on the side of the frame 1, a buffer feeding mechanism 3 arranged above the frame 1, and a double-layer spiral conveying mechanism 4 arranged below the output end of the buffer feeding mechanism 3. The buffer feeding mechanism 3 includes a feeding roller 34, and a plurality of material-pushing protrusions 35 are uniformly fixedly connected to the outer wall of the feeding roller 34. A material storage interval area is reserved between the plurality of material-pushing protrusions 35. When the drive assembly 2 drives the feeding roller 34 to rotate, the corn raw materials are smoothly conveyed to the double-layer spiral conveying mechanism 4 at intervals through the synchronous rotation of the material-pushing protrusions 35.

[0026] It is worth noting that the feeding protrusion 35 is an annular protrusion structure. Several annular feeding protrusions 35 are equidistantly distributed along the axial direction of the feeding roller 34. The storage interval area is an annular groove between two adjacent annular feeding protrusions 35, which is used to temporarily store corn raw materials.

[0027] It should be noted that the drive assembly 2 includes a drive motor 21, a coupling 22, and a screw shaft 23. The output end of the drive motor 21 is coaxially connected to the screw shaft 23 through the coupling 22. The screw shaft 23 has a propeller blade structure and is used to push corn raw materials in the conveying channel.

[0028] It should be noted that this device is used to transport dry, clean corn kernels. Its application scenario is the intermediate conveying link in the corn deep processing production line: after the cleaning screen or destoner in the previous process completes the impurity removal operation, the corn kernels that meet the cleanliness requirements are sent into this device. After being processed by the buffer feeding and screw conveyor of this device, the corn kernels are then smoothly conveyed to the peeling machine, grits making machine or temporary storage silo in the next process to ensure the continuous and stable operation of the production line.

[0029] Please refer to Figure 1 - Figure 8As shown, the buffer feeding mechanism 3 includes a feeding frame 31. The upper part of the feeding frame 31 is a rectangular hopper, and the lower part is a tapered funnel outlet. A buffer roller 32 is rotatably connected at the junction of the rectangular hopper and the funnel outlet of the feeding frame 31. The buffer roller 32 is a hollow cylindrical structure. The side wall of the buffer roller 32 is connected to a liquid inlet pipe 321. Inclined baffles 322 are uniformly fixed to the outer wall of the buffer roller 32. Aqueous solution is added to the inside of the buffer roller 32 through the liquid inlet pipe 321. In the initial state, the liquid level of the aqueous solution inside the buffer roller 32 is lower than the center horizontal plane of the buffer roller 32. When the buffer roller 32 rotates, the baffles 322 can stir the aqueous solution to rise and impact downward under the action of gravity.

[0030] It should be noted that a transmission component 33 is assembled between the buffer roller 32 and the drive motor 21. The transmission component 33 includes a driven roller 331 and a driving roller 332. The radius ratio of the driven roller 331 to the driving roller 332 is three to one, and a transmission belt 333 is connected between the driven roller 331 and the driving roller 332. The driven roller 331 is fixedly connected to the end of the buffer roller 32, and the driving roller 332 is fixedly connected to the outer wall of the output shaft of the drive motor 21. The drive motor 21 drives the buffer roller 32 to rotate synchronously through the transmission component 33.

[0031] Please refer to Figure 1 as well as Figure 9 - Figure 11 As shown, the double-layer spiral conveying mechanism 4 includes an inner conveying pipe 41 and an outer sleeve 43. The inner conveying pipe 41 and the outer sleeve 43 are provided with conveying feed troughs at the positions corresponding to the feed outlet of the tapered funnel of the feeding frame 31. The inner conveying pipe 41 and the outer sleeve 43 are provided with conveying discharge troughs at the lower end away from the conveying feed trough. The inner wall of the inner conveying pipe 41 is uniformly provided with air-permeable micropores 42. The air-permeable micropores 42 are all designed with an inclined shape, and the inner wall of the air-permeable micropores 42 is equipped with a fine pore filter screen. The outer sleeve 43 is sleeved on the outside of the inner conveying pipe 41. The two form a continuous negative pressure interlayer channel through the air-permeable micropores 42. During the rotational conveying process, the axial air-guiding effect generated inside the inner conveying pipe 41 is used to automatically form a negative pressure in the negative pressure interlayer channel, and the dust generated by the conveying of corn raw materials is sucked into the interlayer channel through the air-permeable micropores 42.

[0032] It should be noted that an extension pipe 45 is installed on the side of the outer sleeve 43 near the conveying discharge trough. The extension pipe 45 is connected to the negative pressure interlayer channel. Inside the extension pipe 45, there is a fan blade 44 for enhancing the airflow in the interlayer channel, and the fan blade 44 is coaxially connected to the spiral shaft 23.

[0033] Specifically, when this device is working, the dry and clean corn kernels are first fed into the feeding frame 31 after being discharged from the cleaning screen or destoner of the previous process. The corn kernels are temporarily stored in the rectangular hopper. The gradually narrowing funnel discharge port guides the material to the buffer roller 32 area below. After the drive assembly 2 is started, the drive motor 21 outputs two power sources at the same time: one drives the screw shaft 23 to rotate through the coupling 22, and the other drives the buffer roller 32 to rotate through the transmission component 33.

[0034] During the buffer feeding process, the driving wheel 332 on the output shaft of the drive motor 21 drives the driven wheel 331 to rotate via the transmission belt 333. Since the radius ratio of the driven wheel 331 to the driving wheel 332 is three to one, the rotational speed of the buffer roller 32 is controlled at one-third of the rotational speed of the screw shaft 23. Figure 3 As shown, the feeding protrusions 35 are equidistantly distributed along the axial direction of the buffer roller 32. Their overall axial length and radial projected area are much larger than the opening area of ​​the feeding troughs on the inner conveying pipe 41 and the outer sleeve 43. During the buffer feeding process, as the buffer roller 32 rotates, the feeding protrusions 35 temporarily store the corn kernels in the annular grooves between adjacent protrusions, and then sequentially feed the corn kernels into the lower feeding trough as the roller rotates. Because the area occupied by the feeding protrusions 35 is much larger than the opening area of ​​the feeding trough, the amount of corn kernels fed into the conveying channel per unit time is limited to the bearing capacity of the feeding trough, preventing a large influx of corn kernels into the channel and causing local accumulation. Furthermore, this "slow feeding, fast conveying" speed regulation ensures a continuous and stable supply of raw materials for subsequent processes, improving the overall efficiency of the production line. As the buffer roller 32 rotates, the annular feeding protrusions 35 on its outer wall sequentially immerse themselves in the corn kernels at the bottom of the feeding frame 31 in the direction of rotation, scraping the corn kernels and temporarily storing them in the annular grooves between adjacent protrusions. Then, as the roller rotates, the corn kernels are continuously and smoothly fed into the conveying feed trough below. During this process, the cooperative structure of the feeding protrusions 35 and the grooves ensures that the corn kernels are relatively evenly separated and conveyed layer by layer in the feeding frame 31, effectively avoiding the "bridging" and "rat hole" problems common in traditional silos, and also reducing the risk of kernel jamming caused by local accumulation of corn kernels.

[0035] like Figure 8 As shown, as the buffer roller 32 continues to rotate, the aqueous solution inside it is continuously stirred up by the inclined baffle 322. When the baffle 322 passes the highest point, the aqueous solution impacts the inner wall of the buffer roller 32 downward under the action of gravity. The impact force continues to act on the buffer roller 32, thereby preventing the corn kernels carried from being stuck in the annular groove between the adjacent feeding protrusions 35.

[0036] As the buffer roller 32 continues to rotate, the water solution inside it initially has a liquid level lower than the center horizontal plane of the buffer roller 32. When the buffer roller 32 rotates, the inclined baffles 322 on the outer wall are immersed in the water solution in sequence according to the rotation direction. As the roller rotates, the water solution is lifted upward and forms a local vortex, causing the water solution to be continuously stirred and turned upward. When the baffles 322 rotate to the highest point with the buffer roller 32, the water solution, which loses the support of the baffles 322, falls rapidly downward under the action of gravity. It acts directly on the annular groove area between the adjacent feeding protrusions 35 on the inner wall of the buffer roller 32 with a certain impact speed. Through the continuous impact force of the water flow, the corn kernels are prevented from being stuck in the annular groove of the feeding protrusions 35, ensuring the continuous and smooth buffer feeding process.

[0037] When the buffer feeding mechanism 3 feeds the corn kernels into the inner conveying pipe 41 of the double-layer screw conveyor mechanism 4 through the conveying feed trough, the screw shaft 23 rotates at high speed under the drive of the drive motor 21. Its propeller blades not only push the corn kernels along the inner conveying pipe 41 towards the conveying discharge trough, but also generate an axial airflow from the feed end to the discharge end inside the pipe, just like an "axial flow fan". The speed and pressure of this airflow will increase with the increase of the screw speed and the blade tilt angle.

[0038] The inner conveying pipe 41 has numerous permeable micropores 42 on its wall, which are equivalent to countless "throttling orifices". When the high-speed axial airflow flows through these micropores, local vortices and pressure drops are formed at the orifices. According to Bernoulli's principle, the faster the flow rate, the lower the pressure, which makes the pressure inside the pipe lower than the pressure inside the interlayer, thus forming a pressure difference from the interlayer to the inside of the pipe. In order to balance this pressure difference, the air inside the interlayer is "drawn" into the pipe through the permeable micropores 42 and flows towards the discharge end with the axial airflow. As long as the spiral shaft 23 continues to rotate, this suction process will not stop, thus forming a continuous negative pressure state inside the interlayer, which draws the dust generated during the corn kernel conveying process into the interlayer channel through the permeable micropores 42.

[0039] After dust enters the interlayer through the permeable micropores 42 with the air, it forms an airflow in the same direction as the screw conveyor, flowing from the feed end to the discharge end. This is because the axial airflow inside the pipe is strongest at the discharge end, and the suction effect is most obvious, guiding the airflow in the interlayer to converge at the discharge end. Meanwhile, the extension pipe 45 of the outer sleeve 43 is connected to the negative pressure interlayer channel, and the internal fan blade 44 is coaxially connected to the screw shaft 23 and rotates synchronously with the screw shaft 23, further enhancing the airflow in the interlayer channel and guiding the dust-laden airflow to the extension pipe 45 for centralized discharge, thus achieving the effect of dust removal along the process.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A conveying device for corn processing, used for continuous conveying of corn raw materials, comprising a frame (1), wherein a drive assembly (2) is mounted on the side of the frame (1), characterized in that: A buffer feeding mechanism (3) is provided above the frame (1), and a double-layer spiral conveying mechanism (4) is provided below the output end of the buffer feeding mechanism (3). The buffer feeding mechanism (3) includes a feeding roller (34). The outer wall of the feeding roller (34) is uniformly fixed with a number of feeding protrusions (35). There is a storage interval area reserved between the feeding protrusions (35). When the driving component (2) drives the feeding roller (34) to rotate, the corn raw material is stably transported to the double-layer spiral conveying mechanism (4) through the synchronous rotation of the feeding protrusions (35).

2. The conveying equipment for corn processing according to claim 1, characterized in that: The feeding protrusion (35) is an annular protrusion structure. Several annular feeding protrusions (35) are equidistantly distributed along the axial direction of the feeding roller (34). The storage interval area is an annular groove between two adjacent annular feeding protrusions (35) for temporarily storing corn raw materials.

3. The conveying equipment for corn processing according to claim 1, characterized in that: The drive assembly (2) includes a drive motor (21), a coupling (22) and a screw shaft (23). The output end of the drive motor (21) is coaxially connected to the screw shaft (23) through the coupling (22). The screw shaft (23) is a propeller-type structure used to push corn raw materials in the conveying channel.

4. The conveying equipment for corn processing according to claim 1, characterized in that: The buffer feeding mechanism (3) includes a feeding frame (31), the upper half of which is a rectangular hopper and the lower half is a tapered funnel outlet. A buffer roller (32) is rotatably connected at the junction of the rectangular hopper and the funnel outlet of the feeding frame (31).

5. A conveying device for corn processing according to claim 4, characterized in that: The buffer roller (32) is a hollow cylindrical structure. The side wall of the buffer roller (32) is connected to the liquid inlet pipe (321). Inclined baffles (322) are uniformly fixed to the outer wall of the buffer roller (32). The liquid inlet pipe (321) replenishes the buffer roller (32) with aqueous solution. In the initial state, the liquid level of the aqueous solution inside the buffer roller (32) is lower than the center horizontal plane of the buffer roller (32). When the buffer roller (32) rotates, the baffles (322) can stir the aqueous solution to rise and impact downward under the action of gravity.

6. The conveying equipment for corn processing according to claim 4, characterized in that: A transmission component (33) is assembled between the buffer roller (32) and the drive motor (21). The transmission component (33) includes a driven wheel (331) and a driven wheel (332). The radius ratio of the driven wheel (331) and the driven wheel (332) is three to one. A transmission belt (333) is connected between the driven wheel (331) and the driven wheel (332). The driven wheel (331) is fixedly connected to the end of the buffer roller (32). The driven wheel (332) is fixedly connected to the outer wall of the output shaft of the drive motor (21). The drive motor (21) drives the buffer roller (32) to rotate synchronously through the transmission component (33).

7. The conveying equipment for corn processing according to claim 1, characterized in that: The double-layer spiral conveying mechanism (4) includes an inner conveying pipe (41) and an outer sleeve (43). The inner conveying pipe (41) and the outer sleeve (43) are provided with conveying feed troughs at the positions corresponding to the feed box (31) tapered funnel discharge port. The inner conveying pipe (41) and the outer sleeve (43) are provided with conveying discharge troughs at the lower end away from the conveying feed trough.

8. A conveying device for corn processing according to claim 7, characterized in that: The inner layer conveying pipe (41) has uniformly opened air-permeable micropores (42) on its pipe wall. The air-permeable micropores (42) are all designed in an inclined manner, and the inner wall of the air-permeable micropores (42) is equipped with a fine pore filter screen.

9. A conveying device for corn processing according to claim 7, characterized in that: The outer sleeve (43) is fitted outside the inner conveying pipe (41), and the two form a continuous negative pressure interlayer channel through the air-permeable micropores (42). During the rotational conveying process, the axial air-driving effect generated inside the inner conveying pipe (41) is used to automatically form a negative pressure in the negative pressure interlayer channel, and the dust generated during the conveying of corn raw materials is sucked into the interlayer channel through the air-permeable micropores (42).

10. A conveying device for corn processing according to claim 7, characterized in that: The outer sleeve (43) is equipped with an extension tube (45) on the side near the conveying outlet trough. The extension tube (45) is connected to the negative pressure interlayer channel. The extension tube (45) is provided with a fan blade (44) to enhance the airflow in the interlayer channel. The fan blade (44) is coaxially connected to the spiral shaft (23).

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