A multi-layer grading screen feeding mechanism for grain processing

Abstract

The application relates to the technical field of screening equipment and discloses a feeding mechanism of a multi-layer grading screen for grain processing, which comprises a distributing box and a feeder. The distributing box is arranged at one side of a screen box of the multi-layer grading screen. An inlet is formed in the top of the distributing box. The distributing box is arranged in an open mode towards the side of the screen box. A plurality of main partition plates are arranged in the distributing box and correspond to a plurality of compartments of the screen box. The main partition plates divide the inner cavity of the distributing box into a plurality of feeding channels. The top ends of the feeding channels are communicated with the inlet, and the bottom ends of the feeding channels are respectively communicated with feeding inlets of the compartments in the screen box. The feeder is arranged on the top of the distributing box and is communicated with the inlet on the top of the distributing box. The feeder is used for conveying grain materials into the distributing box. The application has the effect of facilitating concentrated feeding of the compartments of the multi-layer grading screen.

Description

Technical Field

[0001] This application relates to the technical field of screening equipment, and in particular to the feeding mechanism of a multi-layer grading screen for grain processing. Background Technology

[0002] Multi-layer grading screens are important equipment widely used in grain processing, mainly for removing broken grains and impurities from grain materials (such as soybeans and corn).

[0003] In related technologies, a multi-layer grading screen includes a frame, a screen box, and a swing drive mechanism. The screen box is suspended on the frame by a universal hanger. The screen box has multiple independent compartments inside, and each independent compartment is equipped with multiple screens. Each compartment inlet is equipped with an independent feeder for feeding. The swing drive mechanism is used to drive the screen box to swing back and forth.

[0004] When the multi-layer grading screen is running, the feeder transports the grain material to be screened to the corresponding compartment, while the oscillating drive mechanism drives the screen body to oscillate back and forth, which, together with the multi-stage screen inside the compartment, removes broken particles and impurities from the grain material.

[0005] Regarding the aforementioned technologies, each compartment of the screening box needs to be equipped with an independent feeder to complete the conveying of grain materials. On the one hand, the equipment mechanism is relatively complex and the manufacturing cost is high. On the other hand, during daily maintenance, each feeder needs to be inspected and maintained one by one, which is inconvenient to operate. Therefore, there is room for improvement. Utility Model Content

[0006] In order to facilitate centralized feeding of materials to each compartment of the multi-layer grading screen while simplifying the equipment structure of the multi-layer grading screen, this application provides a feeding mechanism for a multi-layer grading screen for grain processing.

[0007] The feeding mechanism of a multi-layer grading screen for grain processing provided in this application adopts the following technical solution:

[0008] A feeding mechanism for a multi-layer grading screen for grain processing includes a material distribution box and a feeder;

[0009] The material distribution box is located on one side of the screen box of the multi-layer grading screen; the top of the material distribution box has an inlet; the material distribution box is open on one side facing the screen box; the inside of the material distribution box is supported by several main partitions corresponding to several compartments of the screen box; the several main partitions divide the inner cavity of the material distribution box into several feeding channels; the top of several feeding channels are connected to the inlet; and the bottom of several feeding channels are connected to the feeding inlets of each compartment inside the screen box.

[0010] The feeder is mounted on the top of the distribution box and is connected to the inlet on the top of the distribution box; the feeder is used to convey grain materials into the distribution box.

[0011] By adopting the above technical solution, when feeding materials into each compartment of the multi-layer grading screen, the grain material to be screened is centrally fed into the distribution box by the feeder, and then fed into the corresponding compartment of the screen box through the feeding channels inside the distribution box. The centralized feeding of each compartment of the screen box can be achieved through one feeder. Compared with the traditional method of equipping each compartment with an independent feeder, the equipment structure of the multi-layer grading screen is effectively simplified.

[0012] Preferably, the two sides of the material distribution box are a hinged side and a movable side, respectively. The hinged side of the material distribution box is hinged to the screen box of the multi-stage grading screen, and the movable side of the material distribution box is connected to the screen box of the multi-stage grading screen through a connecting component.

[0013] By adopting the above technical solution, the material distribution box can be separated from the screen box. When it is necessary to clean and maintain the feeding channels inside the screen box, the connection between the material distribution box and the screen box can be disconnected to facilitate centralized cleaning and maintenance of each feeding channel inside the screen box.

[0014] Preferably, the main partition consists of a first vertical section, a first inclined section, and a second vertical section from bottom to top; the first vertical section blocks the feed inlet of the corresponding compartment and leaves a feed gap with the top of the feed inlet of the corresponding compartment, and the first inclined section is inclined upward in a direction away from the feed inlet of the corresponding compartment.

[0015] By adopting the above technical solution, after the grain material entering the feeding channel falls onto the first inclined section, it can smoothly slide into the corresponding compartment through the first inclined section, which is conducive to the grain material entering the compartment corresponding to the screen box more smoothly through the feeding channel.

[0016] Preferably, a grid plate is vertically connected to the upper surface of the first inclined section, and the grid plate cooperates with the first inclined section to form a plurality of buffer grooves.

[0017] By adopting the above technical solution, the grain material falling into the first inclined section through the feeding channel can be stored in the buffer tank on the first inclined section to form a buffer layer covering the first inclined section, which limits the subsequent falling material from directly impacting the first inclined section and causing the first inclined section to be easily damaged.

[0018] Preferably, the inner cavity of the feeder is connected to several secondary partitions, which divide the inner cavity of the feeder into several feeding channels, and the several feeding channels are respectively connected to several feeding channels; each feeding channel is rotatably supported by a feeding roller, and several dividing rods are evenly distributed on the outer periphery of the feeding roller, and the feeding roller and the several dividing rods cooperate to form several material troughs.

[0019] The feeder is also provided with a drive assembly for driving the plurality of feed rollers to rotate.

[0020] By adopting the above technical solution, when the multi-layer grading screen is running, the drive component drives the feeding rollers at each part of the feeder to rotate synchronously. The grain material entering the feeder falls into several material troughs on the outer periphery of the feeding rollers and then falls to the bottom of the feeding channel as the feeding rollers rotate, and is discharged through the feeding channel. This helps to ensure that the grain material flows smoothly in and out of the feeding channel and limits the occurrence of material blockage in the feeding channel.

[0021] Preferably, both ends of the feeding roller are rotatably connected to both ends of the feeder; the drive assembly includes a rotary drive component, a drive chain, and a plurality of drive sprockets; the rotary drive component is drivenly connected to one of the feeding rollers to drive the corresponding feeding roller to rotate; the plurality of drive sprockets are coaxially connected to the ends of the plurality of feeding rollers; the drive chain is sleeved and engaged with the plurality of drive sprockets.

[0022] By adopting the above technical solution, when the corresponding feeding roller is driven to rotate by the rotary drive component, the other feeding rollers can be driven to rotate synchronously by the drive chain, making the rotation of the feeding rollers in the feeder simpler and more convenient.

[0023] Preferably, a gap is left between the separator bar on the outer periphery of the feeding roller and the inner walls on both sides of the feeding channel.

[0024] By adopting the above technical solution, it is beneficial to limit the situation where the dividing rod on the outer periphery of the feeding roller squeezes the grain material when the subsequent feeding roller rotates to the point where the dividing rod is opposite to the inner wall of the feeding channel on both sides, which would cause the grain material to be crushed and damaged.

[0025] Preferably, the feeder end is provided with a protective cover, which covers the drive chain and several drive sprockets.

[0026] By adopting the above technical solution, and using a protective cover to enclose the drive chain and drive sprocket, it is beneficial to limit the possibility of the drive chain and drive sprocket accidentally injuring operators during the operation of subsequent multi-layer grading screens.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By using a distribution box in conjunction with a feeder, grain materials are fed into the distribution box through the feeder and then enter the chambers of the screen box through various feeding channels in the distribution box. This allows for the supply of materials to each chamber of the screen box without the need for an independent feeder for each chamber, thus simplifying the overall structure of the equipment.

[0029] 2. By hinged the material distribution box to the screen box and connecting the movable side of the material distribution box to the screen box through the connecting component, the material distribution box is stably supported on the screen box. At the same time, during daily cleaning and maintenance, the material distribution box can be separated from the screen box to facilitate cleaning of the various feeding channels inside the material distribution box.

[0030] 3. The setting of the first inclined plate at the main partition plate facilitates the material falling into the feeding channel to slide into the corresponding compartment of the screen box via the first inclined plate, ensuring smooth flow of grain material in the feeding channel. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the multi-layer grading screen body and the feeding mechanism used in this application.

[0032] Figure 2 This is a schematic diagram of the internal structure of the multi-layer grading screen body and the feeding mechanism used in this application.

[0033] Figure 3 This is a schematic diagram used in this application to illustrate the connection relationship between the material distribution box and the screen box.

[0034] Figure 4 This is a schematic diagram of the internal structure of the feeder used in this application.

[0035] Figure 5 This is an internal schematic diagram used in this application to illustrate the rotary drive component.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Multi-layer grading screen; 11. Frame; 12. Screen box; 121. Chamber; 13. Universal lifting device; 2. Distribution box; 20. Feed inlet; 21. Main partition; 211. First vertical section; 212. First inclined section; 213. Second vertical section; 22. Feeding channel; 23. Grating plate; 24. Connecting assembly; 241. Connecting plate; 242. Connecting bolt; 3. Feeder; 31. Secondary partition; 32. Feeding channel; 33. Feeding roller; 34. Separator bar; 35. Connecting piece; 4. Gear motor; 5. Drive sprocket; 6. Protective cover; 61. Heat dissipation hole. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0039] Reference Figure 1 and Figure 2The multi-layer grading screen 1 includes a frame 11, a screen box 12, and a swing drive mechanism (not shown in the figure). The screen box 12 is suspended on the frame 11 by a universal hanger 13. The inner cavity of the screen box 12 has several chambers 121 distributed from top to bottom. The chambers 121 are equipped with multi-level screens (not shown in the figure). The rocker arm drive mechanism is connected to the screen box 12 and is used to drive the screen box 12 to swing back and forth.

[0040] This application discloses a feeding mechanism for a multi-layer grading screen 1 used in grain processing, referring to... Figure 1 and Figure 2 The system includes a distribution box 2 and a feeder 3. The distribution box 2 is connected to one side of the screen box 12 of the multi-layer grading screen 1 and is located near the inlet of several compartments 121. The distribution box 2 has an opening facing the screen box 12, and an inlet 20 is provided on the top of the distribution box 2. Several main partitions 21 are connected to the several compartments 121 of the screen box 12 inside the distribution box 2. The main partitions 21 divide the inner cavity of the distribution box 2 into several feeding channels 22. The top of each feeding channel 22 is connected to the inlet 20, and the bottom of each feeding channel 22 is connected to the inlet of several compartments 121 of the screen box 12. The feeder 3 is connected to the inlet 20 on the top of the distribution box 2 and is used to transport the grain material to be screened into the distribution box 2.

[0041] The main partition 21 consists of a first vertical section 211, a first inclined section 212, and a second inclined section from bottom to top. The first vertical section 211 blocks the feed inlet of the corresponding compartment 121 and leaves a feeding gap at the top of the feed inlet of the compartment 121. The first inclined section 212 is inclined upward in a direction away from the corresponding compartment 121. With the above arrangement, the grain material that falls into the corresponding feed channel 22 of the distribution box 2 via the feeder 3 can slide into the corresponding compartment 121 of the screen box 12 after falling into the first inclined section 212 of the main partition 21. This helps to ensure that the feed channels 22 inside the distribution box 2 can smoothly convey the grain material.

[0042] The upper surface of the first inclined section 212 of the main partition 21 is welded with a grid plate 23. The grid plate 23 and the first inclined section 212 cooperate to form a number of buffer grooves, which are used to store grain materials. After the grain materials that subsequently enter the feeding channel 22 fall into the first inclined section 212, they can accumulate in the buffer grooves of the first inclined section 212, thereby forming a buffer layer on the surface of the first inclined section 212. This limits the direct impact of the grain materials that continue to fall into the first inclined section 212, and reduces the possibility of the first inclined section 212 of the main partition 21 being easily damaged by the long-term impact of the grain materials.

[0043] Reference Figure 1 and Figure 3The material distribution box 2 has a hinged side and a movable side on opposite sides. The movable side of the material distribution box 2 is hinged to the screen box 12 by several hinges. The movable side of the material distribution box 2 is connected to the screen box 12 by a connecting assembly 24, thus securing the material distribution box 2 to the screen box 12. Specifically, the connecting assembly 24 includes a connecting plate 241 and a connecting bolt 242. One end of the connecting plate 241 is connected to the movable side of the material distribution box 2, and the other end of the connecting plate 241 is attached to the screen box 12. The connecting plate 241 has a connecting through hole corresponding to the connecting bolt 242. The connecting bolt 242 passes through the connecting through hole, passes through the connecting plate 241, and is threaded to the screen box 12, thus securing the movable side of the material distribution box 2 to the screen box 12. When it is necessary to clean the feeding channels 22 inside the material distribution box 2, the connecting bolts 242 can be removed from the screen box 12 and the material distribution box 2 can be swung away from the screen box 12 to facilitate the centralized cleaning of the feeding channels 22 inside the material distribution box 2.

[0044] Reference Figure 2 and Figure 4 The feeder 3 is fixedly mounted on the top of the frame 11 of the multi-layer grading screen 1. The feeder 3 has openings at the top and bottom. The lower opening of the feeder 3 communicates with the top inlet of the distribution box 2, and a gap is left between the bottom of the feeder 3 and the distribution box 2. Several partitions 31 are vertically connected to the inner cavity of the feeder 3, dividing the inner cavity of the feeder 3 into several feeding channels 32. The several feeding channels 32 are respectively arranged opposite to several feeding channels 22 to realize the communication between the feeding channels 32 and the feeding channels 22. This facilitates the feeder 3 to evenly transport the grain material to be screened into the feeding channels 22 of the distribution box 2.

[0045] Feeding rollers 33 are horizontally supported within the feeding channel 32. Each feeding roller 33 is rotatably supported at both ends of the feeder 3 via bearings. Several dividing rods 34 are connected parallel to the outer periphery of each feeding roller 33, forming several material troughs in conjunction with the dividing rods 34. The feeder 3 is equipped with a drive assembly corresponding to each feeding roller 33, which drives the feeding rollers 33 to rotate. When grain material is subsequently fed into the distribution box 2 via the feeder 3, the drive assembly drives the feeding rollers 33 to rotate synchronously. The rotating feeding rollers 33, in conjunction with the dividing rods 34, evenly move the grain material entering the feeding channel 32 to the bottom of the feeding channel 32, allowing the grain material to fall into the corresponding feed channel 22 of the distribution box 2, thus achieving smooth discharge from the feeding channel 32 and preventing blockages. The separator bar 34 on the outer periphery of the feeding roller 33 has a gap on both sides of the corresponding feeding channel 32, which helps to limit the situation where the grain material is squeezed and damaged when the subsequent feeding roller 33 rotates to the point where the separator bar 34 is opposite to the feeding channel 32.

[0046] Reference Figure 1 and Figure 5The drive assembly includes a rotary drive component, a drive chain (not shown in the figure), and several drive sprockets 5. The rotary drive component includes a geared motor 4, which is mounted on the frame 11 of the multi-layer grading screen 1. The output end of the geared motor is connected to the end of one of the several feed rollers 33 to drive the corresponding feed roller 33 to rotate. Several drive sprockets 5 are coaxially connected to the ends of the feed rollers 33 that extend out of the feeder 3, and the drive chain is sleeved and engaged with the drive sprockets 5. Subsequently, by driving the corresponding feed roller 33 to rotate through the geared motor, the remaining feed rollers 33 can be driven to rotate synchronously.

[0047] A protective cover 6 is provided at the end of the feed roller 33. The protective cover 6 covers the outer periphery of the drive chain and several drive sprockets 5, which helps to limit the possibility of the drive chain and drive sprockets 5 accidentally injuring operators during the operation of subsequent equipment. Several connecting pieces 35 are connected to the end of the feed roller 33 corresponding to the protective cover 6. The protective cover 6 is connected to the connecting pieces 35 by bolts to securely install the protective cover 6 at the end of the feeder 3. Several heat dissipation holes 61 are also provided on the protective cover 6.

[0048] The implementation principle of this application embodiment is as follows: when the multi-layer grading screen 1 is running, the feeder 3 located above the distribution box 2 transports the grain material to be screened to the distribution box 2. The grain material entering the distribution box 2 flows into the various chambers 121 of the screen box 12 through the feeding channels 22 in the distribution box 2. It is not necessary to equip multiple feeders 3 to achieve centralized feeding of the various chambers 121 of the screen box 12, which is conducive to simplifying the overall structure of the equipment and reducing manufacturing costs.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A feeding mechanism for a multi-layer grading screen used in grain processing, characterized in that: Includes a material distribution box (2) and a feeder (3); The material distribution box (2) is located on one side of the screen box (12) of the multi-layer grading screen (1); the top of the material distribution box (2) is provided with a material inlet (20); the material distribution box (2) is opened on one side facing the screen box (12); the inside of the material distribution box (2) is provided with several main partitions (21) corresponding to several compartments (121) of the screen box (12); the several main partitions (21) divide the inner cavity of the material distribution box (2) into several feeding channels (22); the top of several feeding channels (22) is connected to the material inlet (20); the bottom of several feeding channels (22) is connected to the feeding inlet of each compartment (121) inside the screen box (12); The feeder (3) is mounted on the top of the distribution box (2) and is connected to the inlet (20) on the top of the distribution box (2); the feeder (3) is used to feed grain materials into the distribution box (2).

2. The feeding mechanism of a multi-layer grading screen for grain processing according to claim 1, characterized in that: The material distribution box (2) has a hinged side and a movable side on both sides. The hinged side of the material distribution box (2) is hinged to the screen box (12) of the multi-level grading screen (1), and the movable side of the material distribution box (2) is connected to the screen box (12) of the multi-level grading screen through a connecting component (24).

3. The feeding mechanism of a multi-layer grading screen for grain processing according to claim 1, characterized in that: The main partition (21) consists of a first vertical section (211), a first inclined section (212), and a second vertical section (213) from bottom to top. The first vertical section (211) blocks the feed inlet of the corresponding chamber (121) and leaves a feed gap with the top of the feed inlet of the corresponding chamber (121). The first inclined section (212) is inclined upward in a direction away from the feed inlet of the corresponding chamber (121).

4. The feeding mechanism of a multi-layer grading screen for grain processing according to claim 3, characterized in that: A grid plate (23) is vertically connected to the upper surface of the first inclined section (212), and the grid plate (23) cooperates with the first inclined section (212) to form a plurality of buffer grooves.

5. The feeding mechanism of a multi-layer grading screen for grain processing according to claim 1, characterized in that: The feeder (3) has several partitions (31) connected to its inner cavity. The partitions (31) divide the inner cavity of the feeder (3) into several feeding channels (32). The feeding channels (32) are connected to several feed inlet channels (22). Feeding rollers (33) are rotatably supported in each feeding channel (32). Several dividing rods (34) are evenly distributed on the outer periphery of the feeding rollers (33). The feeding rollers (33) and the dividing rods (34) cooperate to form several material troughs. The feeder (3) is also provided with a drive assembly, which is used to drive the feeding rollers (33) to rotate.

6. The feeding mechanism of a multi-layer grading screen for grain processing according to claim 5, characterized in that: Both ends of the feeding roller (33) are rotatably inserted through both ends of the feeder (3); the drive assembly includes a rotary drive component, a drive chain and several drive sprockets (5); the rotary drive component is driven to one of the feeding rollers (33) to drive the corresponding feeding roller (33) to rotate; the several drive sprockets (5) are coaxially connected to the ends of the several feeding rollers (33); the drive chain is sleeved and engaged on the several drive sprockets (5).

7. The feeding mechanism of a multi-layer grading screen for grain processing according to claim 5, characterized in that: The feed roller (33) has a gap between the separator rod (34) on the outer periphery of the feed roller (33) and the inner walls on both sides of the feed channel (32).

8. The feeding mechanism of a multi-layer grading screen for grain processing according to claim 6, characterized in that: The feeder (3) is provided with a protective cover (6) at its end, which covers the drive chain and several drive sprockets (5).

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