Rice sieve structure of rice mill

Abstract

The utility model relates to a rice sieve structure of a rice mill, and aims to solve the technical problem that rice bran filtering and separating effects are poor easily due to the fact that rice always rotates in a cylindrical rice sieve in a clustered mode at the same rotating frequency at present, the rice sieve structure of the rice mill comprises a hollow shaft, and a spiral propeller is fixedly arranged on the surface of the head of the hollow shaft. The surface of the body part of the hollow shaft is sleeved with a rice milling emery roll, and a rice sieve is arranged outside the rice milling emery roll; a traditional cylindrical screen drum is changed into the octagonal prism-shaped rice sieve, and pressure friction between rice and between the rice and the rice sieve can be increased at the included angles of the octagonal prism-shaped rice sieve, so that the edges of the octagonal prism-shaped rice sieve are more beneficial to rice milling in the rice milling process compared with the cylindrical screen drum, and the rice milling efficiency is improved; meanwhile, the arranged turbulent flow rods effectively divide and scatter the rotating rice dough, so that the position of rice bran in the rice dough is convenient to move, the separation effect between the rice bran and the rice is improved, and the rice bran is convenient to filter by a screen in the follow-up process.

Description

Technical Field

[0001] The utility model relates to the technical field of rice milling machines, in particular to a rice screen structure of a rice milling machine. Background Art

[0002] The rice milling machine mainly uses the mechanical force generated by mechanical equipment to peel and whiten the brown rice. When the brown rice flows into the whitening chamber from the hopper, the internal pressure of the lead and the mechanical force push the brown rice into the whitening chamber. After self-friction and mutual friction between the brown rice and the sand roller, the cortex of the brown rice can be quickly removed. The rice milling machine can be divided into a friction type rice milling machine and a grinding type rice milling machine. During the operation of the grinding type rice milling machine, the brown rice enters the end of the rice milling chamber from the feed hopper through the flow regulating mechanism, and is pushed into the rice milling chamber by the rotating screw propeller. When the brown rice fills the rice milling chamber, the propulsion screw continues to push the brown rice in, so that the pressure in the rice milling chamber continues to increase. When the pressure of the brown rice group is large enough to overcome the resistance of the pressure door of the discharge port, the discharge port is opened, and the rice grain group is discharged from the rice milling chamber. From the inlet to the outlet of the rice machine, the brown rice is always subjected to grinding, and the cortex is gradually peeled off to become rice bran, which is discharged through the holes of the rice sieve, and finally the rice milling is completed.

[0003] The rice milling chamber of a grinding type rice milling machine usually includes a perfect circular rice screen and a perfect circular emery roller. The rice screen is arranged outside the emery roller, and the emery roller is sleeved on a hollow shaft. A screw propeller is fixed to the feed end of the hollow shaft. When the driving device is started, the hollow shaft connected to the driving device rotates, thereby driving the screw propeller and the emery roller to rotate. The screw propeller realizes feeding, and the rotating emery roller and the stationary rice screen cooperate with each other to realize the whitening of rice.

[0004] Existing rice sieves are often cylindrical and integrally formed. Therefore, when the rice enters the whitening chamber, the rice often rotates in a mass with a uniform rotation frequency, which easily leads to poor rice bran filtering and separation effect. We propose a rice sieve structure for a rice mill. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art, meet practical needs, and provide a rice screen structure for a rice mill to solve the technical problem that rice often clumps and rotates in a cylindrical rice screen with a uniform rotation frequency, which easily leads to poor rice bran filtering and separation effect.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a rice screen structure of a rice milling machine, comprising a hollow shaft, a spiral propeller is fixedly arranged on the surface of the head of the hollow shaft, a rice milling sand roller is sleeved on the surface of the body of the hollow shaft, and a rice screen is arranged outside the rice milling sand roller;

[0007] The rice screen comprises a screen frame, wherein the screen frame is provided with a group of limit grooves arranged inside the screen frame, a screen mesh is engaged in the limit grooves, a number of flow interference rods are evenly distributed on the inner wall of the screen frame, a positioning plate is fixedly provided on the outer wall of the screen frame, and connecting plates are provided on both sides of the screen frame.

[0008] Preferably, a group of the sieve frames together form a three-dimensional octagonal prism.

[0009] Preferably, the spoiler bars are evenly distributed at the angles of the screen frame.

[0010] Preferably, the spoiler rod comprises a connecting rod, the bottom of the connecting rod is fixedly connected to the screen frame, and the top of the connecting rod is provided with a ball.

[0011] Preferably, the volume of the connecting rod decreases from bottom to top.

[0012] Preferably, the ball is matched and embedded in the top of the connecting rod, and the ball is matched and connected with the connecting edge of the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model changes the traditional cylindrical screen into an octagonal prism-shaped rice screen. The angle of the octagonal prism-shaped rice screen can increase the pressure friction between rice grains and between rice and the rice screen, so that the edges of the octagonal prism-shaped rice screen are more conducive to rice milling than the cylindrical screen during the rice milling process, thereby improving the rice milling efficiency. At the same time, the spoiler rods are effectively arranged to divide and break up the rotating rice balls, thereby facilitating the movement of the position of rice bran in the rice balls, improving the separation effect between rice bran and rice, and facilitating the subsequent screening of rice bran.

[0015] 2. In the utility model, since the connecting edge of the ball and the connecting rod is matched and connected, the spoiler rod is smooth as a whole and there will be no sticking phenomenon. The setting of the ball can effectively increase the contact surface with the rice, thereby improving the rice milling efficiency. At the same time, the structural layout of the connecting rod with a narrow top and a wide bottom makes the overall stability better, reducing the possibility of breakage at the connection between the connecting rod and the screen frame under stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the disassembly structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembly structure of the rice screen of the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the microstructure of the utility model;

[0020] In the figure: 1. Hollow shaft; 2. Screw propeller; 3. Rice milling roller; 4. Rice sieve;

[0021] 401, screen frame; 402, screen mesh; 403, spoiler rod; 403a, connecting rod; 403b, ball; 404, positioning plate; 405, connecting plate. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] A rice screen structure for a rice mill, see Figures 1 to 4 , comprising a hollow shaft 1, a screw propeller 2 is fixedly arranged on the head surface of the hollow shaft 1, a rice milling sand roller 3 is sleeved on the body surface of the hollow shaft 1, and a rice screen 4 is arranged outside the rice milling sand roller 3;

[0024] The rice sieve 4 includes a sieve frame 401, which is provided with a group. Specifically, a group of sieve frames 401 together constitute a three-dimensional octagonal prism. A limiting groove is provided inside the sieve frame 401, and a sieve 402 is engaged in the limiting groove. A number of spoiler rods 403 are evenly distributed on the inner wall of the sieve frame 401, wherein the spoiler rods 403 are evenly distributed at the angles of the sieve frame 401. A positioning plate 404 is fixedly provided on the outer wall of the sieve frame 401, and connecting plates 405 are provided on both sides of the sieve frame 401. The utility model changes the traditional cylindrical screen into an octagonal prism-shaped rice screen 4. The angle of the octagonal prism-shaped rice screen 4 can increase the pressure friction between rice grains and between rice and the rice screen 4. Therefore, compared with the cylindrical screen, the edges of the octagonal prism-shaped rice screen 4 are more conducive to rice milling during the rice milling process, thereby improving the rice milling efficiency. At the same time, the spoiler rod 403 is effectively divided and broken up the rotating rice ball, thereby facilitating the movement of the position of rice bran in the rice ball, improving the separation effect between rice bran and rice, and facilitating the subsequent screening 402 to filter the rice bran.

[0025] It is worth noting that the spoiler rod 403 includes a connecting rod 403a, wherein the volume of the connecting rod 403a decreases from bottom to top, the bottom of the connecting rod 403a is fixedly connected to the screen frame 401, and a ball 403b is provided on the top of the connecting rod 403a. Furthermore, the ball 403b is matched and embedded in the top of the connecting rod 403a, and the connecting edge of the ball 403b is matched and connected with the connecting rod 403a. In the utility model, since the connecting edge of the ball 403b is matched and connected with the connecting rod 403a, the spoiler rod 403 is smooth as a whole and does not have the jamming phenomenon. In addition, the setting of the ball 403b can effectively increase the contact surface with the rice, thereby improving the rice milling efficiency. At the same time, the structural layout of the connecting rod 403a, which is narrow at the top and wide at the bottom, makes the overall stability better, and reduces the possibility of the connection between the connecting rod 403a and the screen frame 401 being broken under stress.

[0026] Working principle: a set of sieve frames 401 are connected by connecting plates 405 and threaded fasteners, and then a set of sieve frames 401 are fixed in the whitening room of the rice milling machine by positioning plates 404. When rice is milled, the rice falls onto the spiral propeller 2 through the feed port. The spiral propeller 2 rotates under the drive of the driving device to transport the rice until the rice enters the rice milling cavity formed between the rice milling sand roller 3 and the rice screen 4. The edges of the octagonal prism-shaped rice screen 4 are more conducive to rice milling and improve the rice milling efficiency. At the same time, the spoiler rod 403 is arranged to divide and break up the rotating rice ball, thereby facilitating the movement of the position of the rice bran in the rice ball, improving the separation effect between the rice bran and the rice, and facilitating the subsequent filtering of the rice bran by the screen 402.

[0027] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A rice screen structure for a rice mill, comprising a hollow shaft (1), characterized in that: A screw propeller (2) is fixedly arranged on the head surface of the hollow shaft (1), a rice milling sand roller (3) is sleeved on the body surface of the hollow shaft (1), and a rice sieve (4) is arranged outside the rice milling sand roller (3); The rice sieve (4) comprises a sieve frame (401), wherein the sieve frame (401) is provided with a group of limiting grooves arranged inside the sieve frame (401), wherein a sieve mesh (402) is engaged in the limiting grooves, a plurality of flow-interfering rods (403) are evenly distributed on the inner wall of the sieve frame (401), a positioning plate (404) is fixedly arranged on the outer wall of the sieve frame (401), and connecting plates (405) are arranged on both sides of the sieve frame (401).

2. The rice screen structure of the rice milling machine according to claim 1, characterized in that: A group of the sieve frames (401) together form a three-dimensional octagonal prism.

3. The rice screen structure of the rice milling machine according to claim 1, characterized in that: The spoiler bars (403) are evenly distributed at the angles of the screen frame (401).

4. The rice screen structure of the rice milling machine according to claim 1, characterized in that: The spoiler rod (403) comprises a connecting rod (403a), the bottom of the connecting rod (403a) is fixedly connected to the screen frame (401), and the top of the connecting rod (403a) is provided with a round ball (403b).

5. The rice screen structure of the rice milling machine according to claim 4, characterized in that: The volume of the connecting rod (403a) decreases from bottom to top.

6. The rice screen structure of the rice milling machine according to claim 4, characterized in that: The ball (403b) is matched and embedded in the top of the connecting rod (403a), and the connecting edge of the ball (403b) and the connecting rod (403a) are matched and connected.

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