Rice hull screening device for rice processing production

Abstract

The utility model belongs to rice processing production equipment technical field, concretely relates to a rice hull screening device for rice processing production, including the hopper, the bottom of hopper is open, the periphery of hopper is fixedly connected with support frame, the top of hopper is fixedly connected with two symmetrical support seat of setting, the top of support seat all is provided with the insertion slot, the insertion slot all inserts the plug -in block of plug -in. The rice hull screening device for rice processing production of the utility model, when needing to replace the cylinder screen, can pass through the loosening of two hand screw nut, promotes the locking force between the bottom of transmission plate and the top of support frame to be cancelled, thereby can pass through the pulling of hopper and moves away from the direction of cylinder screen, and drives two sliding strips to move, cooperates the cooperation of stud and transmission channel, and then makes two transmission plates move away from each other, thereby makes the one end of Z type positioning rod away from transmission plate all from the positioning mouth of the insertion block side wall and draws out.

Description

Technical Field

[0001] This utility model belongs to the technical field of rice processing production equipment, specifically relating to a rice husk screening device for rice processing production. Background Technology

[0002] In the rice processing industry, the screening of rice husks (rice husks) is a crucial step, directly affecting the efficiency and quality of subsequent processes such as rice milling and grading. Currently, the industry widely uses drum screens as the primary equipment for rice husk screening. These screens use rotating drums to cause the material to roll on the screen surface, achieving the separation of materials of different particle sizes.

[0003] However, existing drum screens still have the following technical shortcomings in rice husk screening applications: Inconvenient screen replacement: Traditional drum screens are usually installed on the drum frame by bolts or welding. This means that when it is necessary to replace screens with different aperture sizes (such as to adjust the screening particle size), a large number of fasteners must be disassembled. This operation is cumbersome, time-consuming and labor-intensive, which seriously affects production efficiency.

[0004] Therefore, there is an urgent need to design a fast-disassembly, stable and reliable rice husk screening device to solve the technical pain point of inconvenient replacement of traditional drum screens and improve the efficiency and flexibility of rice processing production.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a rice husk screening device for rice processing to solve the problems of the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A rice husk screening device for rice processing includes a feeding hopper with an open bottom. A support frame is fixedly connected to the periphery of the feeding hopper. Two symmetrically arranged support seats are fixedly connected to the top of the feeding hopper. Each support seat has a slot at its top, and a block is inserted into each slot. The two blocks are rotatably connected to the same drive shaft. U-shaped grooves that movably engage with the drive shaft are formed on the side walls of both support seats. A drum screen is fixedly connected to the outside of the drive shaft via multiple connecting columns. A feeding hopper is located above the left end of the drive shaft. A drive structure is connected between the right end of the drive shaft and the rear side wall of the support frame. An inclined discharge hopper is fixedly connected to the bottom opening on the right side of the feeding hopper. An arc-shaped notch that movably engages with the drum screen is formed at the top of the discharge hopper. Pull-out locking components are connected between the side walls of the feeding hopper and the top of the support frame.

[0008] Preferably, the drive structure includes a first gear fixed to the right end of the transmission shaft, a second gear meshing below the first gear, the second gear being rotatably connected to the support frame via a rotating shaft, a first sprocket being fixed to the outer end extension of the rotating shaft, the first sprocket being connected to the second sprocket via a chain drive, the second sprocket being fixed to the outside of the output shaft of the drive motor, and the drive motor being fixed to the rear side wall of the support frame.

[0009] Preferably, the top of the slot is provided with bevels on all four sides.

[0010] Preferably, the pull-out release assembly includes inverted L-shaped connecting rods fixed to both side walls of the feed hopper. Each of the two inverted L-shaped connecting rods has a sliding strip with a convex vertical cross-section fixed to one side wall facing the support frame. The sliding strips are slidably connected to a sliding groove at the top of the support frame. A stud is fixed to the top of each sliding strip. A transmission plate is movably sleeved on the outer side of each of the two studs. A transmission channel is provided on each transmission plate to cooperate with the stud. The top of each stud movably extends through the transmission channel and is threaded with a hand-tightening nut.

[0011] Preferably, the cross-section of the transmission channel is Z-shaped, and the inner width of the transmission channel is equal to the diameter of the stud.

[0012] Preferably, two symmetrically arranged Z-shaped positioning rods are fixedly connected to one side wall of each of the two transmission plates. A guide sleeve is movably sleeved on the outer side of each Z-shaped positioning rod. The guide sleeves are fixed to the top of the support frame. Through holes are opened on both side walls of the two support seats to facilitate insertion of the Z-shaped positioning rod at the end away from the transmission plate. Positioning holes are opened on both side walls of the two inserts to facilitate insertion of the Z-shaped positioning rod at the end away from the transmission plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses a rice husk screening device for rice processing. When the drum screen needs to be replaced, the locking force between the bottom end of the transmission plate and the top end of the support frame can be released by loosening two hand-tightening nuts. This allows the feed hopper to be moved away from the drum screen, driving the two sliding strips to move. With the cooperation of the studs and transmission channels, the two transmission plates move away from each other, allowing the ends of the Z-shaped positioning rods away from the transmission plates to be pulled out from the positioning holes on the side wall of the inserts. This facilitates manual lifting and pulling out the inserts, which are rotatably connected to both ends of the transmission shaft, from the slots on the support base, achieving quick replacement. The removal of the feed hopper prevents the fixed position of the feed hopper in existing technology from affecting the disassembly or installation of the drum screen. In this case, the disassembly or fixing of the drum screen can be achieved by switching the position of the feed hopper, greatly improving the efficiency of drum screen replacement. At the same time, it is convenient to operate, saves time and labor, and greatly improves production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional second-view structure of this utility model; Figure 3 This is a schematic diagram of the overall three-dimensional third-view structure of this utility model; Figure 4 This is a schematic diagram of the overall three-dimensional fourth-view structure of this utility model; Figure 5 This is a schematic diagram of the overall three-dimensional fifth-view structure of this utility model; Figure 6 This is an enlarged structural diagram of point A of this utility model; Explanation of key figure labels: 1. Feed hopper; 11. Support base; 12. Insert block; 13. Drive shaft; 14. Drum screen; 15. Connecting column; 16. Feed hopper; 17. Support frame; 18. First gear; 19. Second gear; 110. First sprocket; 111. Chain; 112. Second sprocket; 113. Drive motor; 114. Discharge hopper; 115. Arc-shaped notch; 116. Inclined surface; 2. Pull-out type locking assembly; 21. Inverted L-shaped connecting rod; 22. Sliding bar; 23. Stud; 24. Hand-tightening nut; 25. Transmission plate; 26. Transmission channel; 27. Z-shaped positioning rod; 271. Through hole; 272. Positioning port; 28. Guide sleeve. Detailed Implementation

[0015] The technical solution of this utility model patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Inconvenient screen replacement: The screens of traditional drum screens are usually installed on the drum frame by bolts or welding. This means that when it is necessary to replace screens with different aperture sizes (such as to adjust the screening particle size), a large number of fasteners must be disassembled. The operation is cumbersome, time-consuming and labor-intensive, which seriously affects production efficiency.

[0019] See attached document Figure 1-6 A rice husk screening device for rice processing includes a hopper 1 with an open bottom. A support frame 17 is fixedly connected to the periphery of the hopper 1. Two symmetrically arranged support seats 11 are fixedly connected to the top of the hopper 1. Each support seat 11 has a slot at its top, and a block 12 is inserted into each slot. The two blocks 12 are rotatably connected to the same drive shaft 13. U-shaped grooves are formed on both side walls of the two support seats 11 to movably engage with the drive shaft 13. The same drum screen 14 mesh is fixed to the outside of the drum screen 14 by multiple connecting columns 15. A feed hopper 16 is provided above the left end of the drive shaft 13. A drive structure is connected between the right end of the drive shaft 13 and the rear side wall of the support frame 17. An inclined discharge hopper 114 is fixed to the bottom opening on the right side of the discharge hopper 1. An arc-shaped notch 115 that moves with the drum screen 14 mesh is opened at the top of the discharge hopper 114. A pull-out locking assembly 2 is connected between the two side walls of the feed hopper 16 and the top of the support frame 17.

[0020] The screening principle of this screening device is based on existing technology. Rice husks are manually guided into the feed hopper 16 and then enter the drum screen 14. Driven by the drive structure, the drum screen rotates. During rotation, fine particles of impurities in the rice husks are screened out and discharged through the open bottom of the feed hopper 1. The screened rice husks are discharged from the discharge hopper 114.

[0021] Furthermore, such as Figure 1-6 As shown, the drive structure includes a first gear 18 fixed to the right end of the drive shaft 13, a second gear 19 meshing below the first gear 18, the second gear 19 being rotatably connected to the support frame 17 via a rotating shaft, a first sprocket 110 being fixed to the outer end extension of the rotating shaft, the first sprocket 110 being connected to a second sprocket 112 via a chain 111, the second sprocket 112 being fixed to the outside of the output shaft of the drive motor 113, and the drive motor 113 being fixed to the rear side wall of the support frame 17.

[0022] The gears, sprockets, and chain 111 are coated with a Teflon PTFE coating to reduce surface adhesion and prevent the accumulation of rice husk debris from affecting the transmission effect.

[0023] Furthermore, such as Figure 1-6 As shown, the top of the slot has beveled surfaces 116 around all four sides.

[0024] The bevel 116 facilitates the quick insertion of the insert 12 into the slot.

[0025] Furthermore, such as Figure 1-6As shown, in order to achieve the disassembly or fixing of the two insert blocks 12 by switching the position of the feed hopper 16 away from or near the drum screen 14, a pull-out type retraction assembly 2 is provided. This assembly includes inverted L-shaped connecting rods 21 fixed to both side walls of the feed hopper 16. Each of the two inverted L-shaped connecting rods 21 has a vertically convex sliding strip 22 fixed to one side wall facing the support frame 17. The sliding strips 22 are slidably connected to a sliding groove at the top of the support frame 17. A stud 23 is fixed to the top of each sliding strip 22. A transmission plate 25 is movably sleeved on the outer side of each stud 23. The transmission plate 25 has a transmission channel 26 that cooperates with the stud 23. The top of each component extends through the transmission channel 26 and is threaded with a hand-tightening nut 24. The cross-section of the transmission channel 26 is Z-shaped, and the inner width of the transmission channel 26 is equal to the diameter of the stud. Two symmetrically arranged Z-shaped positioning rods 27 are fixed to the opposite side walls of the two transmission plates 25. A guide sleeve 28 is movably fitted on the outer side of each Z-shaped positioning rod 27. The guide sleeves 28 are fixed to the top of the support frame 17. The two side walls of the two support seats 11 are provided with through holes 271 to facilitate the insertion of the Z-shaped positioning rod 27 at the end away from the transmission plate 25. The two side walls of the two insert blocks 12 are provided with positioning holes 272 to facilitate the insertion of the Z-shaped positioning rod 27 at the end away from the transmission plate 25.

[0026] The bottom end of the transmission plate 25 is movably fitted with the top end of the support frame 17, and the top end of the sliding bar 22 is flush with the top end of the support frame 17, while the shape of the transmission channel 26 is as shown in the attached figure.

[0027] In actual use, when it is necessary to replace the drum screen 14, the two hand-tightening nuts 24 can be loosened to release the locking force between the bottom end of the transmission plate 25 and the top end of the support frame 17. This allows the feed hopper 16 to be moved away from the drum screen 14, which in turn moves the two sliding strips 22. With the cooperation of the stud 23 and the transmission channel 26, the two transmission plates 25 move away from each other, so that the ends of the Z-shaped positioning rods 27 away from the transmission plates 25 both exit through the positioning holes 272 opened on the side wall of the insert block 12. The drive shaft 13, with its two ends rotatably connected to the inserts 12, is manually pulled out from the slots on the support base 11 for quick replacement. The removal of the feed hopper 16 prevents the fixed position of the feed hopper 16 from affecting the disassembly or installation of the drum screen 14. In this regard, the disassembly or fixing of the drum screen 14 can be achieved by switching the position of the feed hopper 16, which greatly improves the efficiency of replacing the drum screen 14. At the same time, it is convenient to operate, saves time and effort, and greatly improves production efficiency.

[0028] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A rice husk screening device for rice processing, comprising a feeding hopper (1), the bottom of which is open, a support frame (17) fixedly connected to the periphery of the feeding hopper (1), and two symmetrically arranged support seats (11) fixedly connected to the top of the feeding hopper (1). Each support seat (11) has a slot at its top, and a plug (12) is inserted into each slot. The two plugs (12) are rotatably connected to the same drive shaft (13). The two side walls of the two support seats (11) are provided with openings that are movable to the drive shaft (13). The U-shaped groove of the drive shaft (13) is fixed to the same drum screen (14) by multiple connecting columns (15) on the outside of the drive shaft (13). A feed hopper (16) is provided above the left end of the drive shaft (13). A drive structure is connected between the right end of the drive shaft (13) and the rear side wall of the support frame (17). An inclined discharge hopper (114) is fixed to the bottom opening on the right side of the discharge hopper (1). An arc-shaped notch (115) that is movable and fits with the drum screen (14) is opened at the top of the discharge hopper (114). The characteristic of the design is that... A pull-out release assembly (2) is connected between the two side walls of the feed hopper (16) and the top of the support frame (17).

2. The rice husk screening device for rice processing according to claim 1, characterized in that, The drive structure includes a first gear (18) fixed to the right end of the transmission shaft (13), a second gear (19) meshing below the first gear (18), the second gear (19) being rotatably connected to the support frame (17) via a rotating shaft, a first sprocket (110) being fixed to the outer end extension of the rotating shaft, the first sprocket (110) being connected to a second sprocket (112) via a chain (111), the second sprocket (112) being fixed to the outside of the output shaft of the drive motor (113), and the drive motor (113) being fixed to the rear side wall of the support frame (17).

3. The rice husk screening device for rice processing according to claim 1, characterized in that, The top of the slot is provided with bevels (116) around all four sides.

4. The rice husk screening device for rice processing according to claim 1, characterized in that, The pull-out release assembly (2) includes inverted L-shaped connecting rods (21) fixed to both sides of the feed hopper (16). Each of the two inverted L-shaped connecting rods (21) has a sliding strip (22) with a convex vertical cross-section fixed to one side of the support frame (17). The sliding strips (22) are slidably connected to the sliding groove opened at the top of the support frame (17). The top of each sliding strip (22) is fixedly connected to a stud (23). A transmission plate (25) is movably sleeved on the outer side of each of the two studs (23). A transmission channel (26) is opened on each transmission plate (25) to cooperate with the stud (23). The top of each stud (23) moves out of the transmission channel (26) and is threadedly connected to a hand-tightening nut (24).

5. A rice husk screening device for rice processing according to claim 4, characterized in that, The cross-section of the transmission channel (26) is Z-shaped, and the inner width of the transmission channel (26) is equal to the diameter of the stud (23).

6. A rice husk screening device for rice processing according to claim 4, characterized in that, Two symmetrically arranged Z-shaped positioning rods (27) are fixedly attached to one side wall of each of the two transmission plates (25). A guide sleeve (28) is movably sleeved on the outer side of each Z-shaped positioning rod (27). The guide sleeves (28) are fixed to the top of the support frame (17). The two side walls of the two support seats (11) are provided with through holes (271) to facilitate the insertion of the Z-shaped positioning rod (27) at the end away from the transmission plate (25). The two side walls of the two inserts (12) are provided with positioning holes (272) to facilitate the insertion of the Z-shaped positioning rod (27) at the end away from the transmission plate (25).

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