Multi-stage screening structure and rice polishing device thereof

Abstract

The utility model relates to the technical field of rice processing, and discloses a multi-stage screening structure and a rice polishing device thereof, the multi-stage screening structure comprises a screening equipment body, the middle position of the top of the screening equipment body is provided with a feeding port used for feeding; the screening assembly is arranged on the inner wall of the screening equipment body, the screening assembly internally comprises a second screening plate and two first screening plates, the two first screening plates are arranged at the top and the bottom of the inner wall of the screening equipment body correspondingly, and the second screening plate is arranged in the middle of the inner wall of the screening equipment body; a discharging assembly; and a control assembly. According to the raw material screening device, through the arrangement of the discharging assembly and the control assembly, four different raw materials in raw materials can be screened, multiple times of screening are not needed, screening is very convenient, the raw materials can be refined and classified, and follow-up machining of the raw materials is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a multi-stage screening structure and a rice polishing device thereof. Background Art

[0002] Rice is the finished product made from rice grains through various processes, including cleaning, husking, milling, and finishing. The rice germ and aleurone layer contain nearly 64% of rice's nutrients and over 90% of the nutrients needed by the human body, making it a staple food for people in southern China.

[0003] When using existing screening equipment, most of them can only screen two raw materials of different sizes. It is necessary to use different screening equipment for multiple screenings, which is very inconvenient and difficult to finely screen the raw materials, affecting the subsequent processing of rice.

[0004] To this end, we propose a multi-stage screening structure and a rice polishing device. Utility Model Content

[0005] The utility model mainly solves the technical problems of poor screening convenience and screening effect, and provides a multi-stage screening structure and a rice polishing device thereof.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions, a multi-stage screening structure and a rice polishing device thereof, comprising:

[0007] The screening equipment body has a feeding port for feeding provided at the middle position of the top of the screening equipment body;

[0008] The screening assembly is arranged on the inner wall of the screening device body, and the screening assembly includes a second screening plate and two first screening plates. The two first screening plates are respectively arranged at the top and bottom positions of the inner wall of the screening device body, and the second screening plate is arranged in the middle position of the inner wall of the screening device body;

[0009] The unloading assembly is arranged at the bottom and both ends of the screening equipment body, and includes a discharge box, a discharge pipe and a discharge port;

[0010] The control component is arranged in the discharge pipe to drive the raw materials in the discharge pipe to be discharged. The control component includes a first rotating shaft, a second filter plate, a second rotating shaft and a guide plate.

[0011] Furthermore, the first screening plate has a convex structure, and the second screening plate has a concave structure. The inclined surfaces at both ends of the first screening plate are provided with a plurality of first filter holes arranged in a matrix, and the inclined surfaces at both ends of the second screening plate are provided with a plurality of second filter holes arranged in a matrix. The apertures of the first filter holes and the second filter holes on the first screening plate and the second screening plate decrease successively from top to bottom.

[0012] Furthermore, a fixing groove is provided between the second screening plate and the first screening plate at the bottom.

[0013] The fixed groove extends to the middle position of the inner wall at the bottom of the screening equipment body, the discharge pipe is fixedly connected to the inner wall of the fixed groove, and the two ends of the bottom of the screening equipment body are inclined. The discharge port is opened at the tail end of the inclined surface at the bottom of the screening equipment body and passes through the screening equipment body and extends to the bottom of the screening equipment body.

[0014] Furthermore, the discharge box is arranged at both ends of the outer walls on both sides of the screening equipment body, and a discharge trough is provided on the top of the discharge box, which is connected to the inner wall of the screening equipment body and connected to the tail end of the first screening plate. The bottom of the discharge box is inclined and is provided with a reflux trough, which is connected to the inner wall of the screening equipment body.

[0015] Furthermore, a first filter plate is fixedly connected to the inner wall of the discharge box, the first filter plate is inclined, and a completely penetrating discharge port is opened at the tail end of the discharge box and is connected to the first filter plate. The first filter plate is provided with a plurality of third filter holes arranged in a matrix.

[0016] Furthermore, the first rotating shaft is rotatably connected to the two ends of the top inner wall of the discharge pipe through the first motor, the second filter plate is fixedly connected to the outer wall of the first rotating shaft, and the second filter plate is provided with a plurality of fourth filter holes arranged in a matrix.

[0017] Furthermore, the second rotating shaft is rotatably connected to the inner wall of the discharge pipe at the first screening plate through a second motor, and the guide plate is fixedly connected to the outer wall of the second rotating shaft and communicates with the first screening plate.

[0018] Furthermore, the first screening plate is provided with a plurality of fifth filter holes arranged in a matrix, the fifth filter holes being columnar grooves with arc-shaped ends at both ends of the cross section, and the second screening plate is provided with the same fifth filter holes.

[0019] The rice polishing device comprises all the above-mentioned multi-stage screening structures.

[0020] Beneficial effects

[0021] The utility model provides a multi-stage screening structure and a rice polishing device thereof, which has the following beneficial effects:

[0022] (1) The multi-stage screening structure and the rice polishing device thereof can screen four different raw materials in the raw materials through the provided feeding assembly and control assembly, without the need for multiple screenings, which is very convenient and can also refine and classify the raw materials, facilitating their subsequent processing.

[0023] (2) The multi-stage screening structure and the rice polishing device thereof can screen again through the third filter hole on the first filter plate through the provided discharge box, thereby avoiding incomplete filtration of the raw material and affecting the screening effect.

[0024] (3) The multi-stage screening structure and the rice polishing device thereof have a fifth filter hole and an arc-shaped design. When the raw material passes through the fifth filter hole, the contact surface between the two is a smooth curved surface, which reduces the friction between the two and prevents the raw material from getting stuck in the fifth filter hole and affecting the screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the main view of the utility model;

[0026] Figure 2 This is a cross-sectional view of the utility model;

[0027] Figure 3 For this utility model Figure 2 A magnified view of part A;

[0028] Figure 4 For this utility model Figure 2 A magnified view of part B;

[0029] Figure 5 This is a partial cross-sectional view of the first screening plate in Example 2 of the present utility model.

[0030] Legend: 1. Screening equipment body; 2. Feed inlet; 3. Discharge box; 4. Discharge pipe; 5. Discharge port; 6. First screening plate; 7. First filter hole; 8. Second screening plate; 9. Second filter hole; 10. First filter plate; 11. Third filter hole; 12. Discharge trough; 13. Reflux trough; 14. First rotating shaft; 15. Second filter plate; 16. Fourth filter hole; 17. Second rotating shaft; 18. Guide plate; 19. Fifth filter hole. DETAILED DESCRIPTION

[0031] Example 1: Multi-stage screening structure and rice polishing device thereof, such as Figure 1 and Figure 2 Shown, including

[0032] The screening device body 1 has a feeding port 2 for feeding provided at the middle position of the top of the screening device body 1;

[0033] The screening assembly is arranged on the inner wall of the screening device body 1, and the screening assembly includes a second screening plate 8 and two first screening plates 6. The two first screening plates 6 are respectively arranged at the top and bottom positions of the inner wall of the screening device body 1, and the second screening plate 8 is arranged in the middle position of the inner wall of the screening device body 1;

[0034] The material discharge assembly is arranged at the bottom and both ends of the screening equipment body 1, and the material discharge assembly includes a discharge box 3, a discharge pipe 4 and a discharge port 5;

[0035] The control component is arranged in the discharge pipe 4 to drive the raw materials in the discharge pipe 4 to be discharged. The control component includes a first rotating shaft 14, a second filter plate 15, a second rotating shaft 17 and a guide plate 18.

[0036] The first screening plate 6 has a convex structure, and the second screening plate 8 has a concave structure. The first screening plate 6 has a plurality of first filter holes 7 arranged in a matrix on the inclined surfaces at both ends, and the second screening plate 8 has a plurality of second filter holes 9 arranged in a matrix on the inclined surfaces at both ends. The apertures of the first filter holes 7 and the second filter holes 9 on the first screening plate 6 and the second screening plate 8 decrease successively from top to bottom.

[0037] When screening is required, the raw materials are added into the screening equipment body 1 through the feed port 2, and they fall onto the first screening plate 6 on the top. The raw materials can be filtered along the inclined surface of the first screening plate 6. The filtered raw materials are screened in turn through the second filter holes 9 on the second screening plate 8 and the first filter holes 7 on the first screening plate 6 at the bottom.

[0038] A fixed groove is provided between the second screening plate 8 and the first screening plate 6 at the bottom, and the fixed groove extends to the middle position of the bottom inner wall of the screening equipment body 1. The discharge pipe 4 is fixedly connected to the inner wall of the fixed groove, and the two ends of the bottom of the screening equipment body 1 are inclined. The discharge port 5 is opened at the tail end of the bottom slope of the screening equipment body 1 and passes through the screening equipment body 1 and extends to the bottom of the screening equipment body 1.

[0039] like Figure 3 As shown, the discharge box 3 is arranged at both ends of the outer walls on both sides of the screening equipment body 1, and a discharge trough 12 is provided on the top of the discharge box 3. The discharge trough 12 is connected to the inner wall of the screening equipment body 1 and is connected to the tail end of the first screening plate 6. The bottom of the discharge box 3 is inclined and is provided with a reflux trough 13. The reflux trough 13 is connected to the inner wall of the screening equipment body 1, and the reflux troughs 13 on the upper and lower ends are respectively connected to the second screening plate 8 and the bottom of the screening equipment body 1.

[0040] A first filter plate 10 is fixedly connected to the inner wall of the discharge box 3. The first filter plate 10 is inclined, and a completely penetrating discharge port is provided at the tail end of the discharge box 3 to communicate with the first filter plate 10. A plurality of third filter holes 11 arranged in a matrix are provided on the first filter plate 10. The third filter holes 11 have the same aperture as the first filter holes 7 on the adjacent first screening plate 6.

[0041] When the raw material is filtered through the first filter hole 7 on the first screening plate 6, the unfiltered raw material can enter the first filter plate 10 in the discharge box 3 through the inclined surface of the first screening plate 6, and be filtered again through the third filter hole 11, and the unfiltered raw material is filtered again. At this time, the unfiltered raw material can be discharged through the discharge port at one end of the first filter plate 10, and the raw material filtered through the third filter hole 11 can return to the screening equipment body 1 through the bottom of the discharge box 3 to be filtered again.

[0042] By providing the discharge box 3 , the raw material can be screened again through the third filter holes 11 on the first filter plate 10 , thereby avoiding incomplete filtration of the raw material and affecting the screening effect.

[0043] like Figure 4 As shown, the first rotating shaft 14 is connected to the two ends of the top inner wall of the discharge pipe 4 through the rotation of the first motor, and the second filter plate 15 is fixedly connected to the outer wall of the first rotating shaft 14. The second filter plate 15 is provided with a plurality of fourth filter holes 16 arranged in a matrix. The fourth filter holes 16 have the same aperture as the second filter holes 9 on the second screening plate 8.

[0044] The second rotating shaft 17 is rotatably connected to the inner wall of the discharge pipe 4 at the first screening plate 6 through a second motor, and the guide plate 18 is fixedly connected to the outer wall of the second rotating shaft 17 and communicated with the first screening plate 6 .

[0045] After the raw materials are filtered through the second filter holes 9 on the second screening plate 8, the unfiltered raw materials can be filtered again through the fourth filter holes 16 on the second filter plate 15 and return to the first screening plate 6 through the guide plate 18. The unfiltered raw materials can be accumulated on the second filter plate 15. After the screening is completed, the second filter plate 15 and the guide plate 18 are driven by the first motor and the second motor to rotate and unfold, and the material can be discharged through the discharge pipe 4.

[0046] In summary, by setting up the unloading component and the control component, four different raw materials can be screened without multiple screenings, which is very convenient, and the raw materials can be classified into detailed categories to facilitate their subsequent processing.

[0047] Example 2: Based on Example 1, refer to Figure 5 The first screening plate 6 is provided with a plurality of fifth filter holes 19 arranged in a matrix. The fifth filter holes 19 are columnar grooves with arc-shaped cross sections at both ends. The second screening plate 8 is provided with the same fifth filter holes 19 .

[0048] The figure shows a rice polishing device, which includes all the above-mentioned multi-stage screening structures. The polishing device is used to polish rice. The polished rice is screened by the multi-stage screening structure and then subjected to subsequent processing.

[0049] By setting the fifth filter hole 19 and the arc-shaped design of the fifth filter hole 19, when the raw material passes through the fifth filter hole 19, the contact surface between the two is a smooth curved surface, which reduces the friction between the two and prevents the raw material from being stuck in the fifth filter hole 19 and affecting the screening.

[0050] The working principle of the present utility model is as follows: when screening is required, after filtering through the first screening plate 6 and the first filter hole 7 at the top, the largest raw material can be discharged through the discharge port on the top discharge box 3, and the internal raw material falls onto the second screening plate 8 at the bottom and is filtered through the second filter hole 9. At this time, the unfiltered raw material can be accumulated on the second filter plate 15, and the raw material filtered through the second filter hole 9 can fall onto the first screening plate 6 at the bottom. At this time, the next smallest raw material can be discharged through the upper and lower ports of the bottom discharge box 3, and the smallest raw material can be discharged through the discharge port 5 after filtering through the third filter hole 11 at the bottom; then the first motor and the second motor are started to drive the second filter plate 15 and the guide plate 18 to expand, and the next largest raw material can be discharged through the discharge pipe 4.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. Multi-stage screening structure, characterized in that: include: A screening device body (1), wherein a feeding port (2) for feeding materials is provided at the middle position of the top of the screening device body (1); A screening assembly is arranged on the inner wall of the screening device body (1), and the screening assembly includes a second screening plate (8) and two first screening plates (6), the two first screening plates (6) are respectively arranged at the top and bottom positions of the inner wall of the screening device body (1), and the second screening plate (8) is arranged at the middle position of the inner wall of the screening device body (1); A discharge assembly is provided at the bottom and both ends of the screening device body (1), and includes a discharge box (3), a discharge pipe (4) and a discharge port (5); A control component is provided in the discharge pipe (4) and is used to drive the discharge of raw materials in the discharge pipe (4). The control component includes a first rotating shaft (14), a second filter plate (15), a second rotating shaft (17) and a guide plate (18).

2. The multi-stage screening structure according to claim 1, characterized in that: The first screening plate (6) has a convex structure, and the second screening plate (8) has a concave structure. The inclined surfaces at both ends of the first screening plate (6) are provided with a plurality of first filtering holes (7) arranged in a matrix, and the inclined surfaces at both ends of the second screening plate (8) are provided with a plurality of second filtering holes (9) arranged in a matrix. The apertures of the first filtering holes (7) and the second filtering holes (9) on the first screening plate (6) and the second screening plate (8) decrease in sequence from top to bottom.

3. The multi-stage screening structure according to claim 1, characterized in that: A fixing groove is provided between the second screening plate (8) and the first screening plate (6) at the bottom. The fixed groove extends to the middle position of the inner wall at the bottom of the screening device body (1), the discharge pipe (4) is fixedly connected to the inner wall of the fixed groove, and the two ends of the bottom of the screening device body (1) are inclined. The discharge port (5) is opened at the tail end of the inclined surface at the bottom of the screening device body (1) and passes through the screening device body (1) and extends to the bottom of the screening device body (1).

4. The multi-stage screening structure according to claim 3, characterized in that: The discharge box (3) is arranged at both ends of the outer walls of the screening device body (1). A discharge trough (12) is provided on the top of the discharge box (3). The discharge trough (12) is connected to the inner wall of the screening device body (1) and is connected to the tail end of the first screening plate (6). The bottom of the discharge box (3) is inclined and is provided with a return trough (13). The return trough (13) is connected to the inner wall of the screening device body (1).

5. The multi-stage screening structure according to claim 4, characterized in that: A first filter plate (10) is fixedly connected to the inner wall of the discharge box (3), the first filter plate (10) is inclined, and a completely penetrating discharge port is provided at the tail end of the discharge box (3) and is connected to the first filter plate (10), and a plurality of third filter holes (11) arranged in a matrix are provided on the first filter plate (10).

6. The multi-stage screening structure according to claim 5, characterized in that: The first rotating shaft (14) is rotatably connected to the top ends of the inner wall of the discharge pipe (4) via a first motor, and the second filter plate (15) is fixedly connected to the outer wall of the first rotating shaft (14). The second filter plate (15) is provided with a plurality of fourth filter holes (16) arranged in a matrix.

7. The multi-stage screening structure according to claim 6, characterized in that: The second rotating shaft (17) is rotatably connected to the inner wall of the discharge pipe (4) at the first screening plate (6) through a second motor, and the guide plate (18) is fixedly connected to the outer wall of the second rotating shaft (17) and communicated with the first screening plate (6).

8. The multi-stage screening structure according to claim 1, characterized in that: The first screening plate (6) is provided with a plurality of fifth filter holes (19) arranged in a matrix, the fifth filter holes (19) being columnar grooves with arc-shaped cross sections at both ends, and the second screening plate (8) is provided with the same fifth filter holes (19).

9. Rice polishing device, characterized in that: The multi-stage screening structure comprises the multi-stage screening structure according to any one of claims 1 to 8.

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