Cold polishing equipment for fine processing of rice

Abstract

The utility model relates to the field of rice processing devices, and discloses rice finish machining cold polishing equipment which comprises a main body mechanism, a circulating mechanism is arranged at the lower end of the main body mechanism, a feeding mechanism is arranged at the upper end of the main body mechanism, and the main body mechanism comprises a main body frame and a polishing frame. The polishing device comprises a polishing frame, a center pipe is fixedly arranged in the middle of the interior of the polishing frame in a sleeving mode, a plurality of transmission motors are fixedly arranged on the side, close to the upper end, of the polishing frame in a sleeving mode, friction rollers are fixedly arranged at the output ends of the transmission motors, and the circulating mechanism comprises a supporting frame, an air pump, an exhaust pipe and an air inlet pipe. And the middle position of the air inlet pipe is fixedly sleeved with a flow dividing pipe, the feeding mechanism comprises a feeding basket, a control motor, an annular rack and a plurality of communicating pipelines, and the output end of the control motor is fixedly connected with a driving gear. According to the rice polishing device, it is guaranteed that the temperature of rice is kept low in the polishing process, and therefore the quality of the rice is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of rice processing equipment, and in particular to a cold polishing device for fine rice processing. Background Technology

[0002] Rice refining refers to the process of further processing rice using advanced equipment and technology, building upon the initial processing. This removes impurities and broken rice, improving the quality of the rice. Polishing, in particular, enhances the smoothness of the rice. Polishing techniques include hot polishing and cold polishing. Cold polishing, which processes rice at low temperatures, avoids the problem of starch gelatinization on the rice surface caused by high temperatures, thus better preserving the rice's nutrients and original quality. Through physical actions such as friction and collision within the polishing machine, bran and impurities on the rice surface are removed, while simultaneously making the rice grains smoother and improving the appearance quality of the rice.

[0003] In current cold polishing equipment, room-temperature rice that has undergone initial processing is typically fed directly into the polishing device. This rice may retain residual heat from the initial processing, and because it is tightly packed, the heat generated by the decomposition of internal substances cannot dissipate quickly enough. This heat can cause the initial temperature of the rice to rise. Although the polishing equipment maintains a low-temperature environment, the rice may reach a higher temperature after polishing due to the higher initial temperature. This high temperature can lead to the loss of nutrients in the rice. Furthermore, the polishing process primarily removes surface bran and impurities through friction between the polishing components and the rice. Prolonged operation of the polishing components may cause their surface temperature to rise, potentially accelerating the temperature increase of the rice and further leading to the loss of nutrients.

[0004] Therefore, those skilled in the art have provided a cold polishing device for refining rice to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cold polishing device for rice refining. This device ensures that the rice maintains a low temperature during the polishing process, thereby guaranteeing the quality of the rice.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cold polishing device for rice refining includes a main body, a circulation mechanism at the lower end of the main body, and a feeding mechanism at the upper end of the main body.

[0008] The main structure includes a main frame and a polishing frame. A central tube is fixedly sleeved in the middle of the polishing frame. Multiple drive motors are fixedly sleeved on the side of the polishing frame near the upper end. Friction rollers are fixedly installed at the output ends of the multiple drive motors.

[0009] The circulation mechanism includes a support frame, an air pump, an exhaust pipe, and an intake pipe. A diverter pipe is fixedly sleeved in the middle of the intake pipe. A collection frame is fixedly installed on the inner bottom surface of the support frame. A cooling frame is fixedly installed at the upper end of the collection frame.

[0010] The feeding mechanism includes a feeding basket, a control motor, a ring rack and pinion and multiple connecting pipes. The output end of the control motor is fixedly connected to a drive gear, and the front and rear ends of the feeding basket are rotatably fitted with fixed plates.

[0011] Furthermore, a discharge port is provided at the lower end of the main frame, which corresponds to the lower port of the polishing frame, and the polishing frame is fixedly installed inside the main frame.

[0012] Furthermore, both ends of the plurality of friction rollers are rotatably sleeved on both sides of the polishing frame, and both ends of the central tube are fixedly sleeved on both sides of the polishing frame.

[0013] Furthermore, the support frame is fixedly installed at the lower end of the main frame, the middle position of the diversion pipe is fixedly sleeved on the rear end of the main frame, and the port of the diversion pipe near the front end is fixedly connected to the lower end of the central pipe.

[0014] Furthermore, the air pump is fixedly installed at the front end of the main frame, the input end of the air pump is fixedly sleeved at the front end of the main frame, the output end of the air pump is fixedly connected to the exhaust pipe, and a filter screen is fixedly sleeved inside the end of the exhaust pipe near the cooling frame.

[0015] Furthermore, the exhaust pipe is a three-port pipe, with one port of the exhaust pipe fixedly connected to one side of the cooling frame, another port of the exhaust pipe fixedly connected to the upper end of the collection frame, the upper end of the air inlet pipe fixedly fitted onto the upper end of the main frame, and the lower end of the air inlet pipe fixedly connected to the rear end of the cooling frame.

[0016] Furthermore, the feeding basket is fixedly sleeved on the upper end of the main frame, the control motor is fixedly installed on the upper end of the main frame, and a feeding roller is rotatably sleeved on the inner surface of the feeding basket near the lower end.

[0017] Furthermore, multiple connecting pipes are located inside the feed basket, and the front and rear ends of the multiple connecting pipes are respectively fixedly connected to two fixed plates. The annular rack is fixedly sleeved on the front end of one of the two fixed plates, which is closer to the front end. The annular rack and the drive gear are meshed together.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model proposes a cold polishing equipment for rice refining. The equipment is equipped with a feeding mechanism. During operation, a cooling system consisting of two fixed plates and multiple connecting pipes effectively reduces the temperature of the rice. Cold water is input from the front end of the first fixed plate, flows through the connecting pipes, and finally outputs from the rear end of the second fixed plate. This process allows the cold water to absorb and remove heat from the rice, achieving a pre-cooling effect. Simultaneously, due to the meshing of the drive gear and the ring rack, the cooling system can rotate. This not only prevents heat accumulation caused by rice stacking but also ensures uniform cooling of the rice. In this way, the initial temperature of the rice is reduced, thus maintaining a lower temperature after polishing, reducing the loss of nutrients in the rice, and ensuring the quality of the rice.

[0020] 2. This utility model proposes a cold polishing device for rice refining. The cold polishing device is equipped with a main body and a circulation mechanism. During operation, both the polishing frame and the central tube adopt a mesh structure design. The rice is placed in the space between the polishing frame and the central tube. Cold air enters the central tube through the diversion pipe and is then blown onto the rice through the mesh. This not only effectively cools the rice and the friction rollers, reducing the heat accumulation caused by friction and thus reducing the damage to the nutritional components of the rice, but also quickly removes the bran powder and impurities generated during the friction process from the polishing frame, effectively preventing the re-adsorption of dust. This design ensures the quality of the rice after cold polishing. Attached Figure Description

[0021] Figure 1 This is an axonometric view of the present invention;

[0022] Figure 2 This is a cross-sectional axonometric view of the present invention;

[0023] Figure 3 This is an axonal view of the circulation mechanism in this utility model;

[0024] Figure 4 This is a cross-sectional axonometric view of the feeding mechanism in this utility model;

[0025] Figure 5 This is a cross-sectional axonometric view of the polishing frame in this utility model.

[0026] Legend:

[0027] 1. Main structure; 101. Main frame; 102. Discharge port; 103. Polishing frame; 104. Central tube; 105. Drive motor; 106. Friction roller; 2. Circulation mechanism; 201. Support frame; 202. Collection frame; 203. Cooling frame; 204. Air pump; 205. Exhaust pipe; 206. Filter screen; 207. Air inlet pipe; 208. Diverter pipe; 3. Feeding mechanism; 301. Feed basket; 302. Control motor; 303. Drive gear; 304. Ring rack; 305. Feed roller; 306. Connecting pipe; 307. Fixing plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figure 1 An embodiment of this utility model is provided: a cold polishing equipment for rice fine processing, including a main body 1, a circulation mechanism 2 provided at the lower end of the main body 1, and a feeding mechanism 3 provided at the upper end of the main body 1;

[0030] Specifically, the main structure 1 is the main structure of the cold polishing equipment and the main place for rice polishing; the circulation mechanism 2 is a structure that can circulate cold air; and the feeding mechanism 3 is the rice feeding structure.

[0031] Reference Figure 2 , Figure 5 The main body 1 includes a main frame 101 and a polishing frame 103. A central tube 104 is fixedly sleeved in the middle of the polishing frame 103. Multiple drive motors 105 are fixedly sleeved on the side of the polishing frame 103 near the upper end. Friction rollers 106 are fixedly installed at the output ends of the multiple drive motors 105.

[0032] The lower end of the main frame 101 is provided with a discharge port 102, which corresponds to the lower end of the polishing frame 103. The polishing frame 103 is fixedly installed inside the main frame 101. Both ends of the multiple friction rollers 106 are rotatably sleeved on both sides of the polishing frame 103, and both ends of the central tube 104 are fixedly sleeved on both sides of the polishing frame 103.

[0033] Specifically, the main frame 101 is the main framework for cold polishing rice. An insulation layer is embedded in the middle of the frame wall to ensure a low-temperature environment inside the main frame 101. The discharge port 102 is the outlet for the polished rice. The polishing frame 103 is the main polishing area for rice. Its surface has mesh openings to facilitate the discharge of bran and impurities. The polishing frame 103 is tilted downwards, and its upper and lower ends have upper and lower ports respectively. The upper end of the polishing frame 103 is connected to the feed... The lower end of the basket 301 is fixedly connected, and the upper port is directly opposite the lower end of the feeding basket 301. The lower end of the polishing frame 103 is fixedly connected to the main frame 101, and the lower port is directly opposite the discharge port 102. The wall of the central tube 104 is a mesh structure, which can ensure that cold air passes through the tube wall and blows onto the rice in the polishing frame 103. The drive motor 105 can drive the friction roller 106 to rotate. The surface of the friction roller 106 is a cotton friction layer, which rubs against the rice to polish it.

[0034] Reference Figure 2 , Figure 3 The circulation mechanism 2 includes a support frame 201, an air pump 204, an exhaust pipe 205 and an air inlet pipe 207. A diversion pipe 208 is fixedly sleeved in the middle of the air inlet pipe 207. A collection frame 202 is fixedly installed on the inner bottom surface of the support frame 201. A cooling frame 203 is fixedly installed at the upper end of the collection frame 202.

[0035] The support frame 201 is fixedly installed at the lower end of the main frame 101. The middle position of the diversion pipe 208 is fixedly sleeved at the rear end of the main frame 101. The port of the diversion pipe 208 near the front end is fixedly connected to the lower end of the central pipe 104. The air pump 204 is fixedly installed at the front end of the main frame 101. The input end of the air pump 204 is fixedly sleeved at the front end of the main frame 101. The output end of the air pump 204 is fixedly connected to the exhaust pipe 205. The end of the exhaust pipe 205 near the cooling frame 203 is fixedly sleeved with a filter screen 206. The exhaust pipe 205 is a three-port pipe. One port of the exhaust pipe 205 is fixedly connected to one side of the cooling frame 203. One port of the exhaust pipe 205 is fixedly connected to the upper end of the collection frame 202. The upper end of the air inlet pipe 207 is fixedly sleeved at the upper end of the main frame 101. The lower end of the air inlet pipe 207 is fixedly connected to the rear end of the cooling frame 203.

[0036] Specifically, the upper end of the support frame 201 supports the main body mechanism 1, and the rod-like structure at its lower end supports the collection frame 202 and the cooling frame 203. The air pump 204 can drive the air circulation, and the exhaust pipe 205 can lead the air containing bran powder and impurities out of the main body frame 101. The cooling frame 203 is equipped with a cooling plate, which can cool the gas entering it to meet the ambient temperature requirements for cold polishing. The filter screen 206 can prevent bran powder and impurities from entering the cooling frame 203. Under the blocking effect of the filter screen 206, bran powder and impurities will enter the collection frame 202. The air inlet pipe 207 can reintroduce the cooled air into the main body frame 101. The diversion pipe 208 can introduce some cold air separately into the central pipe 104, and can release cold air from the middle position to the rice and friction roller 106 outside, achieving a certain cooling effect.

[0037] Reference Figure 2 , Figure 4 The feeding mechanism 3 includes a feeding basket 301, a control motor 302, a ring rack 304 and multiple connecting pipes 306. The output end of the control motor 302 is fixedly connected to a drive gear 303. The front and rear ends of the feeding basket 301 are rotatably fitted with fixed plates 307.

[0038] The feeding basket 301 is fixedly sleeved on the upper end of the main frame 101, the control motor 302 is fixedly installed on the upper end of the main frame 101, the feeding roller 305 is rotatably sleeved on the inner surface of the feeding basket 301 near the lower end, multiple connecting pipes 306 are located inside the feeding basket 301, the front and rear ends of the multiple connecting pipes 306 are respectively fixedly connected to two fixed plates 307, and the annular rack 304 is fixedly sleeved on the front end of one of the two fixed plates 307 near the front end, and the annular rack 304 and the drive gear 303 are meshed and connected.

[0039] Specifically, the upper end of the feed basket 301 is equipped with a rotatable sealing plate, which can temporarily store some rice. Two fixed plates 307 and multiple connecting pipes 306 together form a cooling structure. The fixed plates 307 are hollow in the middle and connected to the multiple connecting pipes 306. Annular blocks are fixedly installed at opposite ends of the two fixed plates 307. The two annular blocks are rotatably fitted onto the front and rear ends of the feed basket 301, respectively. The two annular blocks are the inlet and outlet of cold water, which can be input from one of the fixed plates 307 and pass through the connecting pipes 306. 06. Then, through another fixed plate 307, cold water flows in the connecting pipe 306, which can remove the heat from the rice. The control motor 302 controls the rotation of the drive gear 303. The ring rack 304 meshes with the drive gear 303. The drive gear 303 can drive the rotation of the ring rack 304, thereby rotating the cooling structure and cooling the rice in advance. The feeding roller 305 is electrically controlled and consists of a central rotating shaft and surrounding rotating blades. As the feeding roller 305 rotates, it can transport the rice into the polishing frame 103.

[0040] Working principle: When using this equipment to cold polish rice, first fill a portion of rice into the feed basket 301. Connect the opposite ends of the two fixed plates 307 to the inlet and outlet pipes of cold water, so that the cold water flows steadily from the connecting pipe 306. Then start the control motor 302, which drives the drive gear 303 to rotate. In turn, the gear 304 rotates through meshing. The fixed plates 307 and the connecting pipe 306 rotate with it. On the one hand, the rice is turned over to avoid the rice being too hot in the middle due to tight stacking. On the other hand, the outer surface of the connecting pipe 306 is in contact with the rice, and the flow of cold water inside the connecting pipe 306 can remove some heat and cool the rice in advance.

[0041] After the rice in the feeding basket 301 cools down to a suitable temperature, the feeding roller 305 is started. The cooling rice is conveyed to the polishing frame 103 by the rotation of the feeding roller 305. Then the drive motor 105 is started, so that multiple friction rollers 106 start to rotate. Since the polishing frame 103 is inclined, the rice slides down the polishing frame 103 while being polished by friction with the friction rollers 106, until it is discharged from the discharge port 102.

[0042] While polishing the rice, it is necessary to ensure that the interior of the main frame 101 is kept at a low temperature. The air pump 204 is started, and cold air first enters the main frame 101 through the air inlet pipe 207 to ensure a low temperature environment for polishing. A portion of the cold air enters the central pipe 104 through the diverter pipe 208. As the cold air flows along the central pipe 104, it is blown through the mesh on the surface of the central pipe 104 onto the rice in the polishing frame 103. On the one hand, this cools down the rice and the friction roller 106. On the other hand, it blows the bran powder and impurities rubbed off from the polishing frame 103 back to the main frame 101. The bran powder and impurities float in the air. Under the action of the air pump 204, the air carrying the bran powder and impurities enters the exhaust pipe 205. After reaching the filter screen 206, the bran powder and impurities are blocked and fall into the collection frame 202. The air with the bran powder and impurities removed enters the cooling frame 203. The cooling plate in the cooling frame 203 cools the air, making the cooled air hollow and recirculate.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rice finishing cold polishing apparatus comprising a main body mechanism (1), characterized by: The lower end of the main body (1) is provided with a circulation mechanism (2), and the upper end of the main body (1) is provided with a feeding mechanism (3); The main body (1) includes a main frame (101) and a polishing frame (103). A central tube (104) is fixedly sleeved in the middle of the polishing frame (103). Multiple drive motors (105) are fixedly sleeved on the side of the polishing frame (103) near the upper end. Friction rollers (106) are fixedly installed at the output ends of the multiple drive motors (105). The circulation mechanism (2) includes a support frame (201), an air pump (204), an exhaust pipe (205), and an air inlet pipe (207). A diversion pipe (208) is fixedly sleeved in the middle of the air inlet pipe (207). A collection frame (202) is fixedly installed on the inner bottom surface of the support frame (201). A cooling frame (203) is fixedly installed at the upper end of the collection frame (202). The feeding mechanism (3) includes a feeding basket (301), a control motor (302), a ring rack (304) and multiple connecting pipes (306). The output end of the control motor (302) is fixedly connected to a drive gear (303). The front and rear ends of the feeding basket (301) are rotatably fitted with fixed plates (307).

2. The rice finishing cold polishing apparatus according to claim 1, wherein: The lower end of the main frame (101) is provided with a discharge port (102), which corresponds to the lower port of the polishing frame (103). The polishing frame (103) is fixedly installed inside the main frame (101).

3. The rice finishing cold polishing apparatus according to claim 1, wherein: Both ends of the plurality of friction rollers (106) are rotatably sleeved on both sides of the polishing frame (103), and both ends of the central tube (104) are fixedly sleeved on both sides of the polishing frame (103).

4. The rice finishing cold polishing apparatus according to claim 1, wherein: The support frame (201) is fixedly installed at the lower end of the main frame (101), the middle position of the diversion pipe (208) is fixedly sleeved on the rear end of the main frame (101), and the port of the diversion pipe (208) near the front end is fixedly connected to the lower end of the central pipe (104).

5. The rice finishing cold polishing apparatus according to claim 1, wherein: The air pump (204) is fixedly installed at the front end of the main frame (101). The input end of the air pump (204) is fixedly sleeved at the front end of the main frame (101). The output end of the air pump (204) is fixedly connected to the exhaust pipe (205). A filter screen (206) is fixedly sleeved inside the end of the exhaust pipe (205) near the cooling frame (203).

6. The rice finishing cold polishing apparatus according to claim 1, wherein: The exhaust pipe (205) is a three-port pipe. One port of the exhaust pipe (205) is fixedly connected to one side of the cooling frame (203), and another port of the exhaust pipe (205) is fixedly connected to the upper end of the collection frame (202). The upper end of the air inlet pipe (207) is fixedly fitted onto the upper end of the main frame (101), and the lower end of the air inlet pipe (207) is fixedly connected to the rear end of the cooling frame (203).

7. The cold polishing equipment for rice refining according to claim 1, characterized in that: The feed basket (301) is fixedly sleeved on the upper end of the main frame (101), the control motor (302) is fixedly installed on the upper end of the main frame (101), and the feed roller (305) is rotatably sleeved on the inner surface of the feed basket (301) near the lower end.

8. The rice finishing cold polishing apparatus according to claim 1, wherein: Multiple connecting pipes (306) are located inside the feed basket (301). The front and rear ends of the multiple connecting pipes (306) are respectively fixedly connected to two fixed plates (307). The annular rack (304) is fixedly sleeved on the front end of one of the two fixed plates (307) near the front end. The annular rack (304) and the drive gear (303) are meshed and connected.

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