Rice fine grinding device for grain processing

Abstract

The invention belongs to the technical field of grain processing, and particularly discloses a grain processing rice fine grinding device which comprises a grinding box, a supporting frame is fixedly connected to the outer portion of the grinding box, a discharging port fixedly communicates with the bottom of the grinding box, and two pairs of grinding rollers arranged up and down are inserted and rotationally connected into the grinding box; a belt wheel set is arranged between the two vertically-arranged grinding rollers, a second meshing gear set is arranged on the outer wall of the belt wheel set located on the lower side, and a first motor is fixedly installed on one side of the outer wall of a supporting frame through an installation frame. According to the rice grinding device, the rice is more easily subjected to follow-up fine grinding, the uniformity and efficiency of the grinding process are improved, the adopted crushing assembly has higher crushing force compared with the crushing work executed by a grinding roller, and the efficiency of the crushing link is particularly obviously improved.

Description

Technical Field

[0001] The invention belongs to the field of grain processing, and specifically discloses a rice fine grinding device for grain processing. Background Art

[0002] Rice grinding devices usually use mechanical grinding to feed rice into the grinding chamber through the feed port. In the grinding chamber, the high-speed rotating grinding disc or grinding roller rubs and squeezes the rice, making the rice particles gradually smaller, thereby achieving the purpose of grinding. The ground rice flour or rice slurry is discharged through the discharge port.

[0003] The existing grinding device usually directly puts the formed rice into the device for grinding, and performs single grinding. It takes a long time to grind the finished rice grains into fine flour, and the grinding efficiency is low. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a rice fine grinding device for food processing to solve the problem of low efficiency of rice grinding in the prior art.

[0005] To achieve the above purpose, the present invention provides a rice fine grinding device for grain processing, comprising a grinding box, the outside of the grinding box is fixedly connected to a support frame, the bottom of the grinding box is fixedly connected to a discharge port, two pairs of grinding rollers arranged vertically are inserted and rotatably connected inside the grinding box, a pulley group is arranged between the two grinding rollers arranged vertically, a second meshing gear group is arranged on the outer wall of the pulley group located on the lower side, a first motor is fixedly installed on one side of the outer wall of the support frame through a mounting frame, and the output end of the first motor is connected to one of the gears in the second meshing gear group, a first central bucket is fixedly connected to the top of the support frame, and a rice crushing assembly for crushing rice is arranged on the top of the support frame.

[0006] In the above technical solution, preferably, the rice crushing assembly includes a crushing tank fixedly connected to the top of the support frame, a second motor is fixedly installed on the top of the crushing tank, an output end of the second motor is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected and inserted into the interior of the crushing tank, a pair of upper and lower crushing assemblies are provided inside the crushing tank, and a second concentrating bucket and a third concentrating bucket are fixedly connected to the upper and lower sides of the inner wall of the crushing tank respectively.

[0007] In the above technical solution, preferably, the crushing assembly includes a linkage plate fixedly connected to the rotating shaft, rolling rollers are fixedly installed on both sides of the outer wall of the linkage plate, and C-shaped leveling plates are fixedly connected on the other two sides of the outer wall of the linkage plate. It also includes a fixed plate fixedly connected to the inner wall of the crushing tank, and the outer wall of the fixed plate is provided with evenly distributed feeding holes. A sleeve is inserted and fixedly connected to the center of the outer wall of the fixed plate, and the rotating shaft is rotatably connected and inserted below the sleeve.

[0008] In the above technical scheme, preferably, an active protrusion is fixedly connected to the outer wall of the rotating shaft, a pair of upper and lower screen plates are fixedly connected to the inner wall of the crushing tank, a driven protrusion with a mounting ring is inserted and slidably connected to the center of the screen plate, a positioning ring is arranged below the driven protrusion, and the positioning ring is rotatably connected to the outer wall of the rotating shaft, a spring plug rod is fixedly connected to the top of the positioning ring, and the spring plug rod is slidably connected and inserted to the mounting ring of the driven protrusion, an insert block is inserted and slidably connected inside the feeding hole, a connecting frame is fixedly connected to the bottom of the insert block, and the connecting frame is connected to the driven protrusion through the connecting block.

[0009] In the above technical solution, preferably, an arc-shaped protrusion is fixedly connected to the top of the rolling roller, and evenly distributed compression cylinders are arranged above the arc-shaped protrusions, and the compression cylinders are fixedly connected to the inner wall of the crushing tank through a mounting ring, and an air blowing pipe is arranged on one side of the compression cylinder, and a pair of arc-shaped pressure plates are fixedly connected to the bottom of the compression cylinder.

[0010] In the above technical scheme, preferably, the first spiral feeding assembly and the second spiral feeding assembly are respectively provided on one side of the outer wall of the crushing tank and the grinding box, and the outer walls of the first spiral feeding assembly and the second spiral feeding assembly are fixedly connected with two pairs of return pipes and connecting plates, and the first spiral feeding assembly and the second spiral feeding assembly are respectively connected to the crushing tank and the grinding box through the return pipes and the connecting plates, and the inner wall of the grinding box is fixedly connected with two pairs of sieve plates with inclined top surfaces, and the sieve plates cooperate with two of the connecting plates.

[0011] In the above technical solution, preferably, a cleaning plate is fixedly connected to the outer wall of the rotating shaft, and the cleaning plate is rotatably connected to the outer wall of the sieve plate, and the sieve plate cooperates with two of the connecting plates.

[0012] In the above technical solution, preferably, a first meshing gear set is provided between the first spiral feeding assembly and the second spiral feeding assembly.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The rice is fully pre-crushed before entering the grinding stage, which not only makes the rice easier to grind, but also improves the uniformity and efficiency of the grinding process. The crushing components used have stronger crushing force than the grinding rollers, which makes the efficiency of the crushing process particularly significant; The rolling rollers therefore have more time to roll the rice, thereby improving the rice crushing efficiency and crushing quality, and the mechanism of periodically opening the feeding hole allows the rice to fall from the feeding hole regularly and evenly to enter the next processing step. This design avoids the problem of local overheating or excessive crushing of rice due to long-term stay on the fixed plate; The blown air can take away the heat from the rice, lowering the temperature of the rice caused by long-term rolling, thereby reducing the loss of nutrition in the rice itself; The rice that does not meet the specifications during the crushing and grinding process will be re-crushed and ground, ensuring the quality of the ground rice noodles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the grinding box of the present invention; Figure 3 This is a schematic diagram of the internal structure of the crushing tank of the present invention; Figure 4 It is a schematic diagram of the structure of the crushing assembly of the present invention; Figure 5 It is a schematic diagram of the deformation structure of the compression cylinder of the present invention; Figure 6 It is a schematic diagram of the matching structure of the plug block and the feeding hole of the present invention; Figure 7 It is a schematic diagram of the matching structure of the cleaning plate and the screening plate of the present invention.

[0015] In the figure: 1, support frame; 2, grinding box; 3, rice crushing assembly; 4, first spiral feeding assembly; 5, second spiral feeding assembly; 6, first meshing gear set; 7, first motor; 8, second meshing gear set; 9, pulley set; 10, grinding roller; 11, sieve plate; 12, discharge port; 13, connecting plate; 14, return pipe; 15, first central bucket; 16, crushing tank; 17, second motor; 18, second central bucket; 19, Rotating shaft; 20, crushing assembly; 21, third central bucket; 22, fixed plate; 23, sleeve; 24, linkage plate; 25, rolling roller; 26, leveling plate; 27, compression cylinder; 28, blowing pipe; 29, arc pressure plate; 30, arc convex block; 31, connecting frame; 32, plug block; 33, active convex block; 34, positioning ring; 35, spring plug rod; 36, driven convex block; 37, screening plate; 38, cleaning plate; 39, feeding hole. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figure 1-Figure 7 A rice fine grinding device for grain processing shown in the figure comprises a grinding box 2, the outside of which is fixedly connected to a support frame 1, the bottom of which is fixedly connected to a discharge port 12, two pairs of grinding rollers 10 arranged vertically are inserted and rotatably connected inside the grinding box 2, a pulley group 9 is arranged between the two grinding rollers 10 arranged vertically, a second meshing gear group 8 is arranged on the outer wall of the pulley group 9 located on the lower side, a first motor 7 is fixedly installed on one side of the outer wall of the support frame 1 through a mounting frame, and the output end of the first motor 7 is connected to one of the gears in the second meshing gear group 8, a first concentrating bucket 15 is fixedly connected to the top of the support frame 1, and under the connection of the second meshing gear group 8 and the pulley group 9, the first motor 7 drives the two pairs of grinding rollers 10 to rotate toward each other respectively, so as to finely grind the rice.

[0019] A rice crushing assembly 3 for crushing rice is provided on the top of the support frame 1. The rice crushing assembly 3 includes a crushing tank 16 fixedly connected to the top of the support frame 1. A second motor 17 is fixedly installed on the top of the crushing tank 16. A rotating shaft 19 is fixedly connected to the output end of the second motor 17, and the rotating shaft 19 is rotatably connected and inserted into the inside of the crushing tank 16. A pair of crushing assemblies 20 arranged up and down are provided inside the crushing tank 16. A second concentrating bucket 18 and a third concentrating bucket 21 are respectively fixedly connected to the upper and lower sides of the inner wall of the crushing tank 16. The crushing assembly 20 includes a linkage plate 24 fixedly connected to the rotating shaft 19, and rolling rollers 25 are fixedly installed on both sides of the outer wall of the linkage plate 24. The outer wall of the linkage plate 24 is fixedly connected to a C-shaped leveling plate 26 on the other two sides. The fixing plate 22 is fixedly connected to the inner wall of the crushing tank 16, and the outer wall of the fixing plate 22 is provided with evenly distributed feeding holes 39. The center of the outer wall of the fixing plate 22 is inserted and fixedly connected with a sleeve 23, and the rotating shaft 19 is rotatably connected and inserted under the sleeve 23. The rotating shaft 19 is driven to rotate by the second motor 17, and then the rolling roller 25 is synchronously driven to rotate on the fixing plate 22, so that the rice on the fixing plate 22 can be rolled, so that the rice has been fully pre-crushed before entering the grinding stage, which not only makes the rice easier to be finely ground subsequently, but also improves the uniformity and efficiency of the grinding process. Compared with the grinding roller 10, the crushing component 20 used in the crushing work has a stronger crushing force, so that the efficiency of the crushing link is particularly significantly improved.

[0020] An active protrusion 33 is fixedly connected to the outer wall of the rotating shaft 19, and a pair of upper and lower screening plates 37 are fixedly connected to the inner wall of the crushing tank 16. A driven protrusion 36 with a mounting ring is inserted and slidably connected to the center of the screening plate 37. A positioning ring 34 is provided below the driven protrusion 36, and the positioning ring 34 is rotatably connected to the outer wall of the rotating shaft 19. The top of the positioning ring 34 is fixedly connected to a uniformly distributed spring plug rod 35, and the spring plug rod 35 is slidably connected and inserted into the mounting ring of the driven protrusion 36. An insert block 32 is inserted and slidably connected inside the feeding hole 39, and a connecting frame 31 is fixedly connected to the bottom of the insert block 32, and the connecting frame 31 is connected to the driven protrusion 36 through the connecting block. The rotating shaft 19 synchronously drives the active protrusion 33 to rotate, thereby continuously The active protrusion 33 contacts the driven protrusion 36. After the two contact, the active protrusion 33 will push the driven protrusion 36 and the connecting frame 31 to move downward synchronously, so that the plug block 32 that originally blocked the feeding hole 39 leaves the inside of the feeding hole 39, so that the rice crushed on the surface of the fixed plate 22 can fall downward from the feeding hole 39, and then the second round of crushing is carried out. The driven protrusion 36 that is no longer in contact with the active protrusion 33 is reset under the push of the spring plug rod 35, so that the plug block 32 is re-inserted into the inside of the feeding hole 39. This design allows the rolling roller 25 to have more time to roll the rice, thereby improving the crushing efficiency and crushing quality of the rice. The mechanism of periodically opening the feeding hole 39 allows the rice to fall from the feeding hole regularly and evenly and enter the next processing step. This design avoids the problem of local overheating or excessive crushing of rice due to long-term stay on the fixed plate.

[0021] An arc-shaped protrusion 30 is fixedly connected to the top of the rolling roller 25, and a uniformly distributed compression cylinder 27 is arranged above the arc-shaped protrusion 30, and the compression cylinder 27 is fixedly connected to the inner wall of the crushing tank 16 through a mounting ring. A blowing pipe 28 is arranged on one side of the compression cylinder 27, and a pair of arc-shaped pressing plates 29 are fixedly connected to the bottom of the compression cylinder 27. The rolling roller 25 drives the arc-shaped protrusion 30 to rotate synchronously. The friction force of the arc-shaped protrusion 30 and the arc-shaped pressing plate 29 is gradually converted into an upward thrust during contact, thereby compressing the compression cylinder 27, so that the gas inside the compression cylinder 27 is blown out through the blowing pipe 28. The blown air can take away the heat from the rice, reduce the temperature of the rice caused by long-term rolling and heating, and thus reduce the loss of nutrition in the rice itself.

[0022] A first spiral feeding assembly 4 and a second spiral feeding assembly 5 are respectively provided on one side of the outer wall of the crushing tank 16 and the grinding box 2. Two pairs of return pipes 14 and connecting plates 13 are fixedly connected to the outer walls of the first spiral feeding assembly 4 and the second spiral feeding assembly 5. The first spiral feeding assembly 4 and the second spiral feeding assembly 5 are respectively connected to the crushing tank 16 and the grinding box 2 through the return pipe 14 and the connecting plate 13. Two pairs of sieve plates 11 with inclined top surfaces are fixedly connected to the inner wall of the grinding box 2, and the sieve plates 11 cooperate with two of the connecting plates 13. A cleaning plate 38 is fixedly connected to the outer wall of the rotating shaft 19, and the cleaning plate 38 is rotatably connected to the outer wall of the sieve plate 37, and the sieve plate 37 cooperates with two of the connecting plates 13. A first meshing gear set 6 is provided between the first spiral feeding assembly 4 and the second spiral feeding assembly 5. After the first spiral feeding assembly 4 is started, it can drive the second spiral feeding assembly 5 to start together. The rice crushed by the part 20 is screened by the screening plate 37 and falls into the next process. The rice that has not been screened is blocked on the top surface of the screening plate 37 and is moved to the edge by the cleaning plate 38. Finally, it falls into the interior of the first spiral feeding assembly 4 through the connecting plate 13, and is transported upward to the interior of the return pipe 14 through the first spiral feeding assembly 4, and then returns to the upper fixed plate 22 to participate in crushing again. The rice powder ground by the grinding roller 10 is filtered by the screening plate 11 and enters the next process. The rice powder that has not been passed is blocked on the top surface of the screening plate 11, and slides along its inclined surface through the connecting plate 13 into the interior of the second spiral feeding assembly 5, and is transported upward through the second spiral feeding assembly 5, and finally returns to the upper grinding roller 10 through the return pipe 14 for re-grinding. This design ensures that the rice that does not meet the specifications during crushing and grinding will be re-participated in the new crushing and grinding, thereby ensuring the quality of the ground rice powder.

[0023] Working principle: The second motor 17 drives the rotating shaft 19 to rotate, thereby synchronously driving the rolling roller 25 to rotate on the fixed plate 22, so that the rice on the fixed plate 22 can be rolled, so that the rice is fully pre-crushed before entering the grinding stage, which not only makes the rice easier to grind finely in the subsequent process, but also improves the uniformity and efficiency of the grinding process. The crushing assembly 20 used has a stronger crushing force than the grinding roller 10 to perform the crushing work, so that the efficiency of the crushing link is particularly significantly improved; The rotating shaft 19 synchronously drives the active protrusion 33 to rotate, and then continuously contacts the driven protrusion 36. After the two contact, the active protrusion 33 will push the driven protrusion 36 and the connecting frame 31 to move downward synchronously, so that the plug block 32 that originally blocked the feeding hole 39 leaves the inside of the feeding hole 39, so that the rice crushed on the surface of the fixed plate 22 can fall downward from the feeding hole 39, and then the second round of crushing is carried out. The driven protrusion 36 that is no longer in contact with the active protrusion 33 is reset under the push of the spring plug rod 35, so that the plug block 32 is re-inserted into the inside of the feeding hole 39. This design allows the rolling roller 25 to have more time to roll the rice, thereby improving the crushing efficiency and crushing quality of the rice. The mechanism of periodically opening the feeding hole 39 allows the rice to fall from the feeding hole regularly and evenly and enter the next processing step. This design avoids the problem of local overheating or excessive crushing caused by the rice staying on the fixed plate for a long time; After the first spiral feeding assembly 4 is started, it can drive the second spiral feeding assembly 5 to start together. The rice crushed by the crushing assembly 20 is screened by the screening plate 37 and falls into the next process. The rice that has not been screened is blocked on the top surface of the screening plate 37, and is moved to the edge by the cleaning plate 38, and finally falls into the interior of the first spiral feeding assembly 4 through the connecting plate 13, and is transported upward to the interior of the return pipe 14 through the first spiral feeding assembly 4, and then returns to the upper fixed plate 22 to participate in crushing again. The rice flour ground by the grinding roller 10 enters the next process after being filtered by the sieve plate 11, while the rice flour that has not been filtered is blocked on the top surface of the sieve plate 11, slides down along its inclined surface through the connecting plate 13 into the interior of the second spiral feeding assembly 5, and is then transported upward by the second spiral feeding assembly 5, and finally returns to the upper grinding roller 10 through the return pipe 14 for re-grinding. This design ensures that the rice that does not meet the specifications during the crushing and grinding process will be re-involved in the new crushing and grinding process, thereby ensuring the quality of the ground rice flour; The rolling roller 25 drives the arc-shaped protrusion 30 to rotate synchronously. The arc-shaped protrusion 30 gradually converts the friction force into an upward thrust when in contact with the arc-shaped pressure plate 29, thereby compressing the compression cylinder 27, so that the gas inside the compression cylinder 27 is blown out through the blowing pipe 28. The blown air can take away the heat from the rice, reduce the temperature of the rice caused by long-term rolling, and thus reduce the loss of nutrition in the rice itself.

[0024] 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, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A rice fine grinding device for grain processing, comprising a grinding box (2), the outside of the grinding box (2) being fixedly connected to a support frame (1), characterized in that: The bottom of the grinding box (2) is fixedly connected to a discharge port (12), two pairs of grinding rollers (10) arranged vertically are inserted and rotatably connected inside the grinding box (2), a pulley group (9) is arranged between the two grinding rollers (10) arranged vertically, a second meshing gear group (8) is arranged on the outer wall of the pulley group (9) located at the lower side, a first motor (7) is fixedly mounted on one side of the outer wall of the support frame (1) through a mounting frame, and the output end of the first motor (7) is connected to one of the gears in the second meshing gear group (8), a first concentrating bucket (15) is fixedly connected to the top of the support frame (1), and a rice crushing assembly (3) for crushing rice is arranged on the top of the support frame (1).

2. A rice fine grinding device for grain processing according to claim 1, characterized in that: The rice crushing assembly (3) comprises a crushing tank (16) fixedly connected to the top of the support frame (1); a second motor (17) is fixedly mounted on the top of the crushing tank (16); an output end of the second motor (17) is fixedly connected to a rotating shaft (19); and the rotating shaft (19) is rotatably connected and inserted into the interior of the crushing tank (16); a pair of crushing assemblies (20) arranged up and down are arranged inside the crushing tank (16); and a second concentrating bucket (18) and a third concentrating bucket (21) are fixedly connected to the upper and lower sides of the inner wall of the crushing tank (16), respectively.

3. A rice fine grinding device for grain processing according to claim 2, characterized in that: The crushing assembly (20) comprises a linkage plate (24) fixedly connected to the rotating shaft (19), rolling rollers (25) being fixedly mounted on both sides of the outer wall of the linkage plate (24), and C-shaped leveling plates (26) being fixedly connected to the other two sides of the outer wall of the linkage plate (24), and further comprises a fixed plate (22) fixedly connected to the inner wall of the crushing tank (16), the outer wall of the fixed plate (22) being provided with evenly distributed feeding holes (39), a sleeve (23) being inserted and fixedly connected at the center of the outer wall of the fixed plate (22), and the rotating shaft (19) being rotatably connected and inserted below the sleeve (23).

4. A rice fine grinding device for grain processing according to claim 3, characterized in that: An active protrusion (33) is fixedly connected to the outer wall of the rotating shaft (19), a pair of screen plates (37) arranged up and down are fixedly connected to the inner wall of the crushing tank (16), a driven protrusion (36) with a mounting ring is inserted and slidably connected to the center of the screen plate (37), a positioning ring (34) is arranged below the driven protrusion (36), and the positioning ring (34) is rotatably connected to the outer wall of the rotating shaft (19), the top of the positioning ring (34) is fixedly connected to uniformly distributed spring insertion rods (35), and the spring insertion rods (35) are slidably connected and inserted to the mounting ring of the driven protrusion (36), an insertion block (32) is inserted and slidably connected inside the feeding hole (39), a connecting frame (31) is fixedly connected to the bottom of the insertion block (32), and the connecting frame (31) is connected to the driven protrusion (36) through the connecting block.

5. The rice fine grinding device for grain processing according to claim 3, characterized in that: An arc-shaped protrusion (30) is fixedly connected to the top of the rolling roller (25), and evenly distributed compression cylinders (27) are arranged above the arc-shaped protrusion (30). The compression cylinder (27) is fixedly connected to the inner wall of the crushing tank (16) via a mounting ring, and an air blowing pipe (28) is arranged on one side of the compression cylinder (27). A pair of arc-shaped pressure plates (29) are fixedly connected to the bottom of the compression cylinder (27).

6. A rice fine grinding device for grain processing according to claim 5, characterized in that: A first spiral feeding assembly (4) and a second spiral feeding assembly (5) are respectively provided on one side of the outer wall of the crushing tank (16) and the grinding box (2); two pairs of return pipes (14) and connecting plates (13) are fixedly connected to the outer walls of the first spiral feeding assembly (4) and the second spiral feeding assembly (5); the first spiral feeding assembly (4) and the second spiral feeding assembly (5) are respectively connected to the crushing tank (16) and the grinding box (2) through the return pipes (14) and the connecting plates (13); two pairs of sieve plates (11) with inclined top surfaces are fixedly connected to the inner wall of the grinding box (2); and the sieve plates (11) are matched with two of the connecting plates (13).

7. The rice fine grinding device for grain processing according to claim 4, characterized in that: A cleaning plate (38) is fixedly connected to the outer wall of the rotating shaft (19), and the cleaning plate (38) is rotatably connected to the outer wall of the sieve plate (37), and the sieve plate (37) cooperates with two of the connecting plates (13).

8. The rice fine grinding device for grain processing according to claim 6, characterized in that: A first meshing gear set (6) is provided between the first spiral feeding assembly (4) and the second spiral feeding assembly (5).

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