Screening equipment for grain processing

Abstract

The invention relates to the technical field of grain processing, and discloses grain processing screening equipment which comprises a shell and a frame plate, an upper screening plate and a lower screening plate are fixedly mounted in the shell, and a lower screening plate is slidably arranged at the bottoms of the two upper screening plates; a plurality of guide rods in sliding connection with the shell are fixedly installed on one side of the lower screening plate, a plurality of screw rods are fixedly installed on the other side of the lower screening plate, and one end of each screw rod penetrates through the shell and is in threaded connection with an adjusting nut. According to the screening equipment for grain processing, through cooperative arrangement of the upper screening plate, the lower screening plate, the guide rods, the screw rods and the adjusting nuts, during use, the lower screening plate is driven to move left and right by screwing the adjusting nuts, at the moment, the lower screening plate can block part of screening holes of the upper screening plate, and therefore the purpose of adjusting the screening hole diameter according to different grain sizes is achieved; and the practicability of the device is effectively improved.

Description

Technical Field

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

[0002] Grains are a broad concept, including but not limited to rice, millet, and sorghum. Grains harvested from farms, taking rice as an example, have an outer husk. Rice grains usually need to be separated from the grain by vibrating screens to facilitate subsequent processing.

[0003] Most existing grain processing screening equipment cannot adjust the aperture of the screening plate during use, which means it can only screen specific types of grains, making it impractical and difficult to absorb dust flying in the air during screening. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a screening device for grain processing, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a screening device for grain processing.

[0008] Preferably, the device includes a housing and a frame plate. Two upper screening plates are fixedly installed inside the housing. A lower screening plate is slidably disposed at the bottom of the two upper screening plates. Several guide rods slidably connected to the housing are fixedly installed on one side of the lower screening plate. Several screws are fixedly installed on the other side of the lower screening plate. One end of each screw passes through the housing and is threadedly connected to an adjusting nut. A middle discharge hopper is fixedly installed at one end of the housing. An upper discharge hopper is fixedly installed above the middle discharge hopper at one end of the housing. A lower discharge hopper is fixedly installed below the middle discharge hopper at one end of the housing. A feeding channel is fixedly installed on the upper surface of the housing. A feeding hopper is fixedly installed on the upper surface of the feeding channel. A material distribution plate is installed inside the feeding channel. A vibration motor is fixedly installed at the bottom of the housing.

[0009] A fixing bracket is fixedly installed on one side of the upper surface of the frame plate. Two inner pillars are fixedly installed at both ends of the other side of the upper surface of the frame plate. An outer pillar is sleeved on the outside of the two inner pillars. A threaded rod that is threadedly connected to the inner pillar is installed inside the outer pillar. A worm gear is fixedly installed at one end of the outer wall of the threaded rod. A handwheel is installed on one side of the outer pillar. One end of the handwheel meshes with the two worm gears in sequence through a worm. A hinge seat is fixedly installed on the upper surface of both the fixing bracket and the outer pillar. The upper surface of the hinge seat is fixedly connected to the bottom of the housing through a shock-absorbing spring.

[0010] Preferably, a collection box is fixedly installed at the other end of the housing, a dust collection box is inserted into the inside of the collection box, and a filter screen is fixedly installed inside the collection box.

[0011] Preferably, a fan is fixedly installed on one side of the collection box, and one end of the air inlet of the collection box is fixedly connected to one side of the shell through a dust extraction pipe.

[0012] Preferably, the sieve holes of the upper sieve plate and the lower sieve plate overlap each other, and the dust extraction pipe is provided with a screen inside the end connected to the shell.

[0013] Preferably, the outer support column is provided with two slide rails inside, and the outer wall surface of the inner support column is provided with two slide grooves corresponding to the slide rails.

[0014] Preferably, a drive motor that is fixedly connected to the material distribution plate is installed at one end of the outer wall of the feeding channel.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a screening device for grain processing, which has the following beneficial effects:

[0017] 1. This grain processing screening equipment is configured with an upper screening plate, a lower screening plate, a guide rod, a screw, and an adjusting nut. During use, turning the adjusting nut moves the lower screening plate left and right. At this time, the lower screening plate will block part of the screen holes of the upper screening plate, thereby achieving the adjustment of the screening hole diameter to adapt to different grain particle sizes and effectively improving the practicality of the device.

[0018] 2. This grain processing screening equipment is configured with a fixed frame, inner support column, outer support column, threaded rod, worm gear, worm and damping spring. In operation, the handwheel is turned to rotate the worm, which in turn drives the worm gear and threaded rod to rotate. This, in turn, moves the inner support column downward along the inner track of the outer support column. At this time, the tilt angle of the shell can be adjusted (the adjustment range is between 0° and 15°), thereby adjusting the tilt angle of the screening equipment. This facilitates the control of material flow rate and residence time, and optimizes screening efficiency.

[0019] 3. This grain processing screening equipment, through the coordinated arrangement of a collection box, dust collection box, filter screen, fan and dust extraction pipe, will cause dust inside the shell to fly when screening grains. At this time, the dust will be drawn into the collection box through the dust extraction pipe, and then filtered through the filter screen in the collection box, thereby playing the role of filtering and dust removal. Attached Figure Description

[0020] Figure 1 This is a side view of a grain processing screening device proposed in this invention.

[0021] Figure 2 This is a side structural cross-sectional view of a grain processing screening device proposed in this invention;

[0022] Figure 3 This is a top sectional view of a grain processing screening device proposed in this invention;

[0023] Figure 4 The present invention provides a screening device for grain processing. Figure 3 Enlarged view of the structure at point A;

[0024] Figure 5 The present invention provides a screening device for grain processing. Figure 2 Enlarged view of the structure at point B.

[0025] In the diagram: 1. Shell; 2. Frame plate; 3. Upper screening plate; 4. Lower screening plate; 5. Guide rod; 6. Screw; 7. Adjusting nut; 8. Middle discharge hopper; 9. Upper discharge hopper; 10. Lower discharge hopper; 11. Feeding channel; 12. Feeding hopper; 13. Distributing plate; 14. Vibrating motor; 15. Fixing frame; 16. Inner support column; 17. Outer support column; 18. Threaded rod; 19. Worm gear; 20. Worm; 21. Shock-absorbing spring; 22. Collection box; 23. Dust collection box; 24. Filter screen; 25. Fan; 26. Dust extraction pipe; 27. Drive motor; 28. Handwheel. Detailed Implementation

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Please see Figure 1-5This invention provides a technical solution comprising a housing 1 and a frame plate 2, characterized in that: two upper screening plates 3 are fixedly installed inside the housing 1, and a lower screening plate 4 is slidably disposed at the bottom of the two upper screening plates 3; several guide rods 5 slidably connected to the housing 1 are fixedly installed on one side of the lower screening plate 4, and several screws 6 are fixedly installed on the other side of the lower screening plate 4; one end of the screws 6 passes through the housing 1 and is threadedly connected to an adjusting nut 7; through the cooperative arrangement of the upper screening plates 3, lower screening plates 4, guide rods 5, screws 6, and adjusting nuts 7, the lower screening plate 4 can be moved left and right by turning the adjusting nuts 7 during use. When the device is activated, the lower screening plate 4 will block part of the screen holes of the upper screening plate 3, thereby achieving the adjustment of the screening hole diameter to adapt to different grain particle sizes and effectively improving the practicality of the device. The middle discharge hopper 8 is fixedly installed at one end of the shell 1, the upper discharge hopper 9 is fixedly installed above the middle discharge hopper 8 at one end of the shell 1, the lower discharge hopper 10 is fixedly installed at the bottom of the middle discharge hopper 8 at one end of the shell 1, the feeding channel 11 is fixedly installed on the upper surface of the shell 1, the feeding hopper 12 is fixedly installed on the upper surface of the feeding channel 11, the material distribution plate 13 is installed inside the feeding channel 11, and the vibration motor 14 is fixedly installed at the bottom of the shell 1.

[0028] A fixing bracket 15 is fixedly installed on one side of the upper surface of the frame plate 2. Two inner support columns 16 are fixedly installed at both ends of the other side of the upper surface of the frame plate 2. An outer support column 17 is sleeved on the outside of the two inner support columns 16. A threaded rod 18 that is threadedly connected to the inner support column 16 is installed inside the outer support column 17. A worm gear 19 is fixedly installed on one end of the outer wall of the threaded rod 18. A handwheel 28 is installed on one side of the outer support column 17. One end of the handwheel 28 is engaged with the two worm gears 19 in sequence through a worm 20. The fixing bracket 15 and the upper surface of the outer support column 17 are both fixedly installed. The device has a hinge base, the upper surface of which is fixedly connected to the bottom of the housing 1 by a shock-absorbing spring 21. It is configured with a fixed bracket 15, an inner support column 16, an outer support column 17, a threaded rod 18, a worm gear 19, a worm 20, and the shock-absorbing spring 21. In use, turning the handwheel 28 rotates the worm 20, which in turn rotates the worm gear 19 and the threaded rod 18. This causes the inner support column 16 to move downwards along the internal track of the outer support column 17, thus adjusting the tilt angle of the housing 1 (the adjustment range is between 0° and 15°). The tilt angle of the screening equipment can be adjusted to facilitate control of material flow rate and residence time, and to optimize screening efficiency. A collection box 22 is fixedly installed at the other end of the shell 1. A dust collection box 23 is inserted into the inside of the collection box 22. A filter screen 24 is fixedly installed inside the collection box 22. A fan 25 is fixedly installed on one side of the collection box 23. One end of the air inlet of the collection box 23 is fixedly connected to one side of the shell 1 through a dust extraction pipe 26. The screen holes of the upper screening plate 3 and the lower screening plate 4 overlap. The end of the dust extraction pipe 26 connected to the shell 1 contains... Each part is equipped with a screen. Through the coordinated arrangement of the collection box 22, dust collection box 23, filter screen 24, fan 25 and dust extraction pipe 26, when the grain is sieved, the dust inside the shell 1 will fly up. At this time, the dust is drawn into the collection box 22 through the dust extraction pipe 26, and then filtered through the filter screen 24 inside the collection box 22, thereby playing the role of filtering and dust removal. The outer support 17 is equipped with two slide rails inside, and the outer wall surface of the inner support 16 is opened with slide rails corresponding to two slide grooves. One end of the outer wall of the feeding channel 1 is equipped with a drive motor 27 that is fixedly connected to the material distribution plate 13.

[0029] Working steps: When in use, grains are put into the feed hopper 12, and the drive motor 27 drives the distribution plate 13 to rotate, so that the grains fall onto the screening plate at a certain speed. At this time, the vibration motor 27 adjusts the housing 1 to vibrate, which will screen the grains into three sizes: large, medium and small.

[0030] In summary, this grain processing screening equipment, through the coordinated arrangement of the upper screening plate 3, lower screening plate 4, guide rod 5, screw 6, and adjusting nut 7, allows for adjustment of the screening aperture to accommodate different grain particle sizes by turning the adjusting nut 7, thereby effectively improving the practicality of the device. Furthermore, through the coordinated arrangement of the fixed frame 15, inner support column 16, outer support column 17, threaded rod 18, worm gear 19, worm 20, and damping spring 21, the worm 20 is rotated by turning the handwheel 28, which in turn drives the worm gear 19. Rotating with the threaded rod 18, the inner support column 16 moves downward along the inner track of the outer support column 17. At this time, the tilt angle of the shell 1 is adjusted (the adjustment range is between 0° and 15°), thereby adjusting the tilt angle of the screening equipment, which facilitates the control of material flow rate and residence time, and optimizes screening efficiency. Through the coordinated arrangement of the collection box 22, dust collection box 23, filter screen 24, fan 25 and dust extraction pipe 26, dust inside the shell 1 will fly when screening grains. At this time, the dust is drawn into the collection box 22 through the dust extraction pipe 26, and then filtered through the filter screen 24 inside the collection box 22, thereby playing the role of filtering and dust removal.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A grain processing screening device, comprising a shell (1) and a frame plate (2), characterized in that: The housing (1) is internally fixedly equipped with two upper screening plates (3), and a lower screening plate (4) is slidably disposed at the bottom of the two upper screening plates (3). Several guide rods (5) that are slidably connected to the housing (1) are fixedly installed on one side of the lower screening plate (4), and several screws (6) are fixedly installed on the other side of the lower screening plate (4). One end of the screws (6) passes through the housing (1) and is threadedly connected to an adjusting nut (7). A discharge hopper (8) is fixedly installed at one end of the housing (1). One end of the housing (1) is fixedly installed above the middle discharge hopper (8) with an upper discharge hopper (9), and one end of the housing (1) is fixedly installed at the bottom of the middle discharge hopper (8) with a lower discharge hopper (10). A feeding channel (11) is fixedly installed on the upper surface of the housing (1), and a feeding hopper (12) is fixedly installed on the upper surface of the feeding channel (11). A material distribution plate (13) is installed inside the feeding channel (11), and a vibration motor (14) is fixedly installed at the bottom of the housing (1). A fixing frame (15) is fixedly installed on one side of the upper surface of the frame plate (2). Two inner pillars (16) are fixedly installed at both ends of the other side of the upper surface of the frame plate (2). An outer pillar (17) is sleeved on the outside of the two inner pillars (16). A threaded rod (18) that is threadedly connected to the inner pillar (16) is installed inside the outer pillar (17). A worm gear (19) is fixedly installed on one end of the outer wall of the threaded rod (18). A handwheel (28) is installed on one side of the outer pillar (17). One end of the handwheel (28) meshes with the two worm gears (19) in sequence through a worm (20). A hinge seat is fixedly installed on the upper surface of both the fixing frame (15) and the outer pillar (17). The upper surface of the hinge seat is fixedly connected to the bottom of the housing (1) through a shock-absorbing spring (21).

2. The grain processing screening equipment according to claim 1, characterized in that: A collection box (22) is fixedly installed at the other end of the housing (1). A dust collection box (23) is inserted into the inside of the collection box (22). A filter screen (24) is fixedly installed inside the collection box (22).

3. The grain processing screening equipment according to claim 2, characterized in that: A fan (25) is fixedly installed on one side of the collection box (23), and one end of the air inlet of the collection box (23) is fixedly connected to one side of the shell (1) through a dust extraction pipe (26).

4. A grain processing screening device according to claim 1, characterized in that: The sieve holes of the upper sieve plate (3) and the lower sieve plate (4) overlap each other, and the dust extraction pipe (26) is provided with a screen inside the end connected to the shell (1).

5. A grain processing screening device according to claim 1, characterized in that: The outer support column (17) is provided with two slide rails inside, and the outer wall surface of the inner support column (16) is provided with two slide rails corresponding to the slide rails.

6. A grain processing screening device according to claim 1, characterized in that: A drive motor (27) that is fixedly connected to the material distribution plate (13) is installed at one end of the outer wall of the feeding channel (1).

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