Emery roll rice mill

Abstract

The utility model relates to an emery roll rice husking machine which comprises a frame body, a processing bin is arranged on the frame body, and a whitening chamber used for rice processing and a collecting chamber located below the whitening chamber and used for collecting rice bran are arranged in the processing bin; a rice sieve is arranged in the whitening chamber, a rice milling roller is rotationally arranged in the rice sieve, the two ends of the rice sieve are open, and a driving part is arranged on the frame body; the impurity removing mechanism comprises a cleaning brush arranged outside the rice sieve in a sleeving mode and a power unit arranged on the frame body, and the cleaning brush is used for brushing the rice sieve; the cleaning mechanism comprises a liquid supply part arranged on the frame body and a spraying part arranged above the rice sieve, the rice sieve can be regularly cleaned through the impurity removing mechanism and the cleaning mechanism, the rice sieve is effectively prevented from being blocked by rice bran and other impurities, and therefore the rice whitening effect is improved, the quality of processed polished rice is guaranteed, and the broken rice rate is reduced; the surfaces of the rice grains are smoother.

Description

Technical Field

[0001] This application relates to the field of rice processing technology, and in particular to a sand roller rice milling machine. Background Technology

[0002] In the grain processing industry, the sand roller rice mill is a common and important piece of equipment used to process brown rice into polished rice. Existing sand roller rice mills mainly consist of a frame and a whitening chamber. The whitening chamber is equipped with a rice sieve and a rotating rice milling roller. The rice is whitened in the whitening chamber through friction between the sand roller and the rice sieve, as well as through mutual friction between the rice grains.

[0003] During the rice milling process, brown rice undergoes friction from the sand rollers and rice sieves, as well as friction between rice grains, resulting in various impurities. These impurities mainly include rice bran, broken rice, rice husk fragments, and tiny particles that detach from the rice's outer layer during the whitening process.

[0004] In practical use, existing sand roller rice milling machines present several challenges. Firstly, during the milling process, impurities from the processed brown rice easily adhere to the sand rollers and rice sieves. With prolonged use, if not cleaned promptly, these impurities accumulate, affecting subsequent milling processes and impacting rice quality, potentially leading to increased broken rice and rough rice grain surfaces. Secondly, after extended use, rice bran, due to its light weight and stickiness, easily accumulates on the sieve surface, gradually filling the sieve holes. When the sieve becomes clogged, the bran discharge rate slows down, and a large accumulation of bran in the whitening chamber not only occupies valuable processing space but also hinders the normal flow and whitening of rice, significantly reducing the milling rate. However, current methods typically rely on manual cleaning of the interior, which is inconvenient and inefficient.

[0005] To address the above problems, a sand roller rice milling machine is now designed. Utility Model Content

[0006] This application provides a sand roller rice milling machine to solve the problem in the related art that after long-term use, impurities after brown rice processing in existing sand roller rice milling machines easily stick to the sand roller and rice sieve, making manual cleaning inconvenient and with low cleaning efficiency.

[0007] In a first aspect, a sand roller rice milling machine is provided, comprising:

[0008] The frame has a processing chamber, which contains a whitening chamber for rice processing and a collection chamber located below the whitening chamber for collecting rice bran.

[0009] The whitening chamber is equipped with a rice sieve, and a rice milling roller is rotatably installed inside the rice sieve. The rice sieve has open ends. A driving component is installed on the frame to drive the rice milling roller to rotate.

[0010] The impurity removal mechanism includes a cleaning brush sleeved on the outside of the rice sieve and a power unit mounted on the frame. The cleaning brush is used to clean the rice sieve, and the power unit is used to drive the cleaning brush to reciprocate along the length of the rice sieve.

[0011] The cleaning mechanism includes a liquid supply unit mounted on a frame and a spray unit arranged above the rice sieve. The spray unit is used to rinse the rice sieve, and the liquid supply unit is used to supply water to the spray unit.

[0012] In some embodiments, the rice sieve has sieve holes;

[0013] The rice sieve is cylindrical, with openings at both ends for feeding and discharging materials, respectively.

[0014] In some embodiments, a feed hopper is provided at the top of the processing chamber, and a discharge hopper is provided at one end of the processing chamber;

[0015] The feed hopper is located above the rice sieve's feed opening and communicates with the whitening chamber; the discharge hopper is located on one side of the rice sieve's discharge opening and communicates with the whitening chamber.

[0016] The bottom of the processing chamber is provided with a vertical inclination angle, and the right side of the vertical inclination angle contacts the end of the rice sieve to guide the rice into the rice sieve.

[0017] In some embodiments, the collection chamber is located below the rice sieve, and the collection chamber and the whitening chamber are interconnected;

[0018] The frame is equipped with a slag discharge pipe that communicates with the collection chamber;

[0019] The frame is also equipped with a fan, the air inlet of which is connected to the collection chamber, the collection chamber is equipped with a filter screen arranged at the air inlet of the fan, and the air outlet of the fan is connected to the outside.

[0020] In some embodiments, the rice milling roller includes a rotating shaft, a screw propeller, and a sand roller connected in sequence from left to right. The other end of the sand roller is rotatably connected to the processing chamber. The screw propeller is used to convey rice inside the whitening chamber and guide the rice out through the discharge hopper.

[0021] The grinding roller is inlaid with diamond particles or grinding rings.

[0022] In some embodiments, the drive component includes a drive motor mounted on the frame, one end of the rotating shaft extends to the outside of the processing chamber, and pulleys are provided on both the outwardly extending end of the rotating shaft and the output shaft of the drive motor, with the two pulleys connected by a belt drive.

[0023] In some embodiments, the cleaning brush includes a collar with bristles arranged in a ring on the inner side of the collar, a guide rod on one side of the collar, and a groove inside the processing chamber, with the guide rod slidingly engaging with the groove.

[0024] In some embodiments, the power unit includes two housings disposed opposite to each other at both ends of the processing chamber. A winding reel is rotatably disposed inside the housing, and a cable is wound around the winding reel. The other end of the cable passes through the housing and the processing chamber and is respectively connected to both ends of the collar. The cable and the guide rod are arranged symmetrically front and back.

[0025] The housing is equipped with a second drive motor, the output shaft of which is connected to the take-up reel and is used to drive the take-up reel to rotate.

[0026] In some embodiments, the liquid supply unit includes a fixing plate mounted on a frame, a water tank and a water pump mounted on the fixing plate, the water pump inlet communicating with the water tank, and the water pump outlet being provided with a transfer pipe, the other end of which is communicating with the spray unit.

[0027] In some embodiments, the spray unit includes a water supply plate disposed inside the whitening chamber. The water supply plate is arc-shaped and arranged on the rice sieve, and the water supply plate is located above the washing brush. The water supply plate has a cavity for storing water inside, and multiple water spray holes are opened at the bottom of the cavity.

[0028] This application provides a sand roller rice milling machine. By regularly cleaning the rice sieve and rice milling roller through the impurity removal mechanism and the cleaning mechanism, it effectively prevents the rice sieve from being blocked by impurities such as rice bran, and prevents impurities from sticking to the surface of the rice milling roller and the inside of the rice sieve. This avoids problems such as poor rice flow, prolonged rice milling time, and uneven rice milling caused by rice sieve blockage, thereby improving the whitening effect of rice, ensuring the quality of the processed refined rice, reducing the broken rice rate, and making the surface of rice grains smoother.

[0029] By promptly cleaning impurities adhering to the milling rollers and rice sieves, the formation of protruding structures caused by these impurities can be prevented, thus avoiding uneven stress distribution within the rice milling machine. This reduces wear and damage to components such as the milling rollers and rice sieves caused by uneven stress.

[0030] Regular cleaning of the rice sieves ensures they remain unobstructed, allowing rice bran to drain quickly and preventing its accumulation in the milling chamber. This guarantees effective processing space within the milling chamber, enabling rice to flow smoothly and be milled efficiently. This helps increase milling speed, shortens processing time, and ultimately improves overall grain processing efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A three-dimensional structural illustration provided for an embodiment of this application. Figure 1 ;

[0033] Figure 2 A three-dimensional structural illustration provided for an embodiment of this application. Figure 2 ;

[0034] Figure 3 A front sectional view provided for an embodiment of this application;

[0035] Figure 4 This is a front sectional view of the spray unit provided in an embodiment of this application;

[0036] Figure 5 A three-dimensional schematic diagram of the connection structure of the rice milling roller, cleaning brush and rice sieve provided in the embodiments of this application;

[0037] Figure 6 This is a three-dimensional schematic diagram of the rice milling roller connection structure provided in the embodiments of this application;

[0038] Figure 7 This is a front sectional view of the connection structure of the rice sieve, cleaning brush, and power unit provided in an embodiment of this application.

[0039] In the diagram: 1. Frame; 2. Processing chamber; 21. Whitening chamber; 22. Collection chamber; 23. Vertical inclination angle; 3. Rice sieve; 31. Sieves; 4. Rice milling roller; 41. Rotating shaft; 42. Screw propeller; 43. Sanding roller; 5. Drive unit; 51. Drive motor; 52. Pulley; 6. Impurity removal mechanism; 61. Cleaning brush; 611. Collar; 612. Guide rod; 62. Power unit; 62 1. Housing; 622. Winding reel; 623. Cable; 624. Drive motor II; 7. Cleaning mechanism; 71. Liquid supply unit; 711. Fixing plate; 712. Water tank; 713. Water pump; 714. Transfer pipe; 72. Spraying unit; 721. Water supply plate; 722. Cavity; 723. Spray hole; 8. Slag discharge pipe; 9. Fan; 91. Filter screen; 11. Feed hopper; 12. Discharge hopper. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] This application provides a sand roller rice milling machine, which can solve the problem in the related art that after long-term use, impurities after brown rice processing are easily stuck on the sand roller and rice sieve, making manual cleaning inconvenient and with low cleaning efficiency.

[0042] Please see Figures 1-3 A rice milling machine with a sand roller includes: a frame 1, on which a processing chamber 2 is provided, the processing chamber 2 having a whitening chamber 21 for rice processing and a collection chamber 22 located below the whitening chamber 21 for collecting rice bran; a rice sieve 3 is provided inside the whitening chamber 21, and a rice milling roller 4 is rotatably arranged inside the rice sieve 3, the rice sieve 3 having open ends; a driving member 5 is provided on the frame 1, the driving member 5 being used to drive the rice milling roller 4 to rotate; a cleaning mechanism 6, which includes a cleaning brush 61 sleeved on the outside of the rice sieve 3 and a power unit 62 provided on the frame 1, the cleaning brush 61 being used to scrub the rice sieve 3, and the power unit 62 being used to drive the cleaning brush 61 to reciprocate along the length of the rice sieve 3; and a cleaning mechanism 7, which includes a liquid supply part 71 provided on the frame 1 and a spray part 72 arranged above the rice sieve 3, the spray part 72 being used to rinse the rice sieve 3, and the liquid supply part 71 being used to supply water to the spray part 72.

[0043] The processing chamber 2 on the frame 1 provides space for the entire rice milling operation. Rice enters the whitening chamber 21. Inside the whitening chamber 21, the rice sieve 3 is fixedly installed, and the rice milling roller 4 rotates inside the rice sieve 3. The drive unit 5 on the frame 1 provides power to the rice milling roller 4, causing it to rotate. When the rice enters the whitening chamber 21, under the action of the friction between the rice milling roller 4 and the rice sieve 3, as well as the mutual friction between rice grains, the outer layer of brown rice is removed, realizing the whitening process of rice.

[0044] Impurities such as rice bran produced after milling fall through the sieve holes on the rice sieve 3 into the collection chamber 22 below for collection, while the milled rice is discharged from the discharge end of the rice sieve 3.

[0045] The cleaning brush 61 in the impurity removal mechanism 6 is sleeved on the outside of the rice sieve 3, and the power unit 62 is mounted on the frame 1. When impurity removal is required for the rice sieve 3, the power unit 62 is activated, driving the cleaning brush 61 to move along the length of the rice sieve 3. During the movement, the cleaning brush 61 washes off impurities such as rice bran, broken rice, and rice husk fragments adhering to the rice sieve 3, preventing impurities from accumulating and clogging the rice sieve 3.

[0046] At the same time, the liquid supply unit 71 supplies water to the spray unit 72, and the water is sprayed out from the spray unit 72 to rinse the rice sieve 3. Combined with the scrubbing action of the cleaning brush 61 in the impurity removal mechanism 6, impurities on the rice sieve 3 are further removed to ensure the screening performance of the rice sieve 3.

[0047] The regular cleaning of the rice sieve 3 and the rice milling roller 4 by the impurity removal mechanism 6 and the cleaning mechanism 7 effectively prevents the rice sieve 3 from being clogged by rice bran and other impurities, and prevents impurities from sticking to the surface of the rice milling roller 4 and the inside of the rice sieve 3. This avoids problems such as poor rice flow, prolonged rice milling time, and uneven rice milling caused by clogging of the rice sieve 3, thereby improving the whitening effect of rice, ensuring the quality of the processed rice, reducing the broken rice rate, and making the surface of the rice grains smoother.

[0048] By promptly cleaning impurities adhering to the sand roller and rice sieve 3, the formation of protruding structures caused by these impurities is prevented, thus avoiding an imbalance of forces within the rice milling machine. This reduces wear and damage to components such as the rice milling roller 4 and rice sieve 3 caused by uneven force.

[0049] Regular cleaning of the rice sieve 3 ensures its smooth flow, allowing rice bran to drain quickly and preventing its accumulation in the whitening chamber 21. This guarantees effective processing space within the whitening chamber 21, enabling rice to flow and whiten smoothly. This helps increase the rice milling rate, shortens rice processing time, and thus improves the overall production efficiency of grain processing.

[0050] like Figure 3 and Figure 5 As shown, the rice sieve 3 in this embodiment has sieve holes 31; the rice sieve 3 is cylindrical, with openings at both ends for feeding and discharging materials respectively.

[0051] Rice enters the whitening chamber 21 through the feeding opening at one end of the rice sieve 3. Since the rice sieve 3 is cylindrical, its internal space provides a place for the rice to be contained and move.

[0052] The milled rice is discharged from the opening at the other end of the rice sieve 3.

[0053] The reasonable distribution of sieve holes 31 can facilitate the discharge of impurities such as rice bran. The size of sieve holes 31 is selected according to processing requirements, such as 12mm×0.85mm or 12mm×1.0mm. This is existing technology and will not be elaborated here.

[0054] like Figure 1 and Figure 2 As shown, further, the processing chamber 2 is provided with a feeding hopper 11 at the top and a discharging hopper 12 at one end; the feeding hopper 11 is located above the feeding opening of the rice sieve 3 and communicates with the whitening chamber 21, and the discharging hopper 12 is located on the side of the discharging opening of the rice sieve 3 and communicates with the whitening chamber 21; the bottom of the processing chamber 2 is provided with a vertical inclination angle 23, and the right side of the vertical inclination angle 23 contacts the end of the rice sieve 3 to guide rice into the interior of the rice sieve 3.

[0055] Feeding stage

[0056] Rice is fed into the feed hopper 11 at the top of the processing chamber 2. Since the feed hopper 11 is located above the feed opening of the rice sieve 3 and is connected to the whitening chamber 21, the rice can fall directly into the feed opening of the rice sieve 3.

[0057] The right side of the vertical inclination angle 23 contacts the end of the rice sieve 3. Under the action of gravity, the rice slides naturally along the upper surface of the vertical inclination angle 23 and smoothly enters the interior of the rice sieve 3, providing a stable and continuous supply of raw materials for the subsequent whitening process.

[0058] like Figure 3 As shown, preferably, in this embodiment, the collection chamber 22 is located below the rice sieve 3, and the collection chamber 22 and the whitening chamber 21 are interconnected;

[0059] The frame 1 is equipped with a slag discharge pipe 8 that communicates with the collection chamber 22;

[0060] The frame 1 is also equipped with a fan 9. The air inlet of the fan 9 is connected to the collection chamber 22. The collection chamber 22 is equipped with a filter screen 91 arranged at the air inlet of the fan 9. The air outlet of the fan 9 is connected to the outside.

[0061] During the rice milling process, impurities such as rice bran, broken rice, and rice husk fragments fall into the collection chamber 22 below through the sieve holes 31 on the rice sieve 3. This effectively collects the impurities generated during the milling process, preventing them from accumulating in the milling chamber 21 and affecting the milling effect and normal operation of the equipment. The impurities accumulated in the collection chamber 22 are discharged by opening the slag discharge pipe 8.

[0062] Meanwhile, after the fan 9 starts, the air in the collection chamber 22 is drawn into the fan 9. During the airflow, the filter 91 can intercept larger particles of impurities such as rice bran and broken rice in the air, preventing these impurities from entering the fan 9 and protecting the normal operation of the fan 9. The air filtered by the filter 91 is discharged into the external environment through the air outlet of the fan 9, realizing ventilation in the collection chamber 22, reducing the humidity and impurity concentration in the collection chamber 22, and improving the efficiency of impurity collection.

[0063] like Figure 3 and Figure 5 As shown, specifically, the rice milling roller 4 in this embodiment includes a rotating shaft 41, a screw propeller 42 and a sand roller 43 connected sequentially from left to right. The other end of the sand roller 43 is rotatably connected to the processing chamber 2. The screw propeller 42 is used to convey the rice inside the whitening chamber 21 and guide the rice to be sent out through the discharge hopper 12.

[0064] The abrasive roller 43 is inlaid with diamond particles or abrasive rings. Two bearings are embedded in the processing chamber 2 to provide rotational support for one end of the rotating shaft 41 and one end of the abrasive roller 43.

[0065] In actual use, the rice entering the whitening chamber 21 is subjected to axial thrust by the spiral blades of the screw propeller 42. The shape and rotation direction of the spiral blades cause the rice to move forward along the length of the whitening chamber 21 and be gradually conveyed to the vicinity of the discharge hopper 12, preparing for subsequent discharge.

[0066] During the rice conveying process, when the rice comes into contact with the surface of the rotating sand roller 43, the diamond particles or sand rings embedded on the sand roller 43 have excellent wear resistance and cutting performance, which can effectively remove the outer layer of the rice. Under the action of the friction between the sand roller 43 and the rice sieve 3 and the mutual friction between the rice particles, the outer layer of the rice is removed, realizing the whitening process of rice. As the rice is continuously conveyed, the whitening process continues until the rice reaches the discharge hopper 12.

[0067] Two bearings are embedded in the processing chamber 2, respectively supporting one end of the rotating shaft 41 and the other end of the sanding roller 43, ensuring the stability and balance of the rice milling roller 4 during rotation. The supporting effect of the bearings allows the rotating shaft 41 and the sanding roller 43 to rotate smoothly.

[0068] The screw propeller 42 enables the rice to be transported in the whitening chamber 21 in a predetermined direction and speed, thus avoiding the accumulation and blockage of rice in the whitening chamber 21.

[0069] like Figure 3 and Figure 5 As shown, in one embodiment, the cleaning brush 61 includes a collar 611, with bristles arranged in a ring on the inner side of the collar 611, and a guide rod 612 on one side of the collar 611. A sliding groove is provided inside the processing chamber 2, and the guide rod 612 slides in cooperation with the sliding groove.

[0070] As the collar 611 moves back and forth along the length of the rice sieve 3, the bristles distributed in a ring on its inner side come into contact with the surface of the rice sieve 3. The bristles rub and scrub the surface of the rice sieve 3, removing impurities such as rice bran and broken rice remaining on the rice sieve 3, thus achieving a cleaning effect.

[0071] The guide rod 612 on one side of the collar 611 slides in conjunction with the groove inside the processing chamber 2, allowing the cleaning brush 61 to move along the groove direction, thus improving the guiding effect.

[0072] like Figure 3 and Figure 7 As shown, in one embodiment, the power unit 62 includes two housings 621 disposed opposite to each other at both ends of the processing chamber 2. A winding reel 622 is rotatably disposed inside the housing 621. A cable 623 is wound around the winding reel 622. The other end of the cable 623 passes through the housing 621 and the processing chamber 2 and is connected to both ends of the collar 611 respectively. The cable 623 and the guide rod 612 are arranged symmetrically front and back.

[0073] The housing 621 is provided with a second drive motor 624, the output shaft of which is connected to the take-up reel 622 and is used to drive the take-up reel 622 to rotate.

[0074] When the equipment is not started or in its initial state, the collar 611 of the cleaning brush 61 is connected to the winding reel 622 of the power unit 62 via a cable 623. At this time, the cable 623 is under moderate tension, which ensures that the cleaning brush 61 is stably positioned at one end of the rice sieve 3. For example, it can be positioned at the feed end of the rice sieve 3 to prepare for subsequent cleaning work without affecting rice processing.

[0075] When it is necessary to adjust the position of the cleaning brush 61, the operator starts the second drive motor 624. The second drive motor 624 serves as a power source, and its output shaft is directly connected to the take-up reel 622. The rotation of the output shaft drives the take-up reel 622 to rotate synchronously.

[0076] One-way movement control:

[0077] To move the cleaning brush 61 towards one end of the rice sieve 3, one drive motor 624 can be controlled to rotate forward, while the other drive motor 624 rotates in reverse. At this time, the forward-rotating drive motor 624 drives the corresponding winding reel 622 to begin winding the cable 623, while the reverse-rotating drive motor 624 causes the other winding reel 622 to unwind. Since both ends of the cable 623 are connected to the two ends of the collar 611, the winding of one side of the cable 623 generates tension, while the unwinding of the other side reduces the constraint force on that side. Under the combined action of these two forces, the collar 611 moves along the direction of the guide rod 612 and the chute under the tension of the cable 623. The cooperation between the guide rod 612 and the chute provides stable guidance and support for the movement of the collar 611, ensuring that the cleaning brush 61 can move smoothly and accurately along the length of the rice sieve 3.

[0078] Reciprocating motion control:

[0079] When it is necessary to reverse the movement of the cleaning brush 61, simply change the rotation direction of the second drive motor 624, that is, control the previously forward-rotating drive motor 624 to reverse, and the previously reverse-rotating drive motor 624 to rotate forward. In this way, the take-up reel 622 on one side begins to unwind the cable 623, while the take-up reel 622 on the other side begins to wind the cable 623. Under the tension of the cable 623, the collar 611 will move in the opposite direction, thereby realizing the reciprocating motion of the cleaning brush 61 along the length of the rice sieve 3.

[0080] The reciprocating motion of the cleaning brush 61 can comprehensively and thoroughly cover the entire length of the rice sieve 3, ensuring that every part of the rice sieve 3 is fully cleaned. The position adjustment of the cleaning brush 61 is automated; operators only need to control the start, stop, and rotation direction of the drive motor 624 to adjust the position and control the reciprocating motion of the cleaning brush 61, eliminating the need for manual operation and reducing the labor intensity of operators.

[0081] like Figure 2 and Figure 3 In one embodiment, the liquid supply unit 71 includes a fixing plate 711 mounted on the frame 1. A water tank 712 and a water pump 713 are mounted on the fixing plate 711. The inlet of the water pump 713 is connected to the water tank 712, and the outlet of the water pump 713 is provided with a transfer pipe 714. The other end of the transfer pipe 714 is connected to the spray unit 72.

[0082] Water tank 712 is used to store the liquids required for cleaning, such as clean water or specific cleaning agent solutions.

[0083] The water pump 713 is the power component of the liquid supply unit 71. When the water pump 713 starts, its inlet generates negative pressure, drawing liquid from the water tank 712 into the water pump 713. The impeller and other structures inside the water pump 713 rotate under the drive of the motor, applying pressure to the liquid and giving it sufficient kinetic energy. The pressurized liquid flows out from the outlet of the water pump 713 and enters the transfer pipe 714. The transfer pipe 714 connects the water pump 713 and the spray unit 72, guiding the liquid from the water pump 713 to the spray unit 72, providing a stable water source for the spray unit 72.

[0084] like Figure 3 and Figure 4 As shown, in one embodiment, the spray section 72 includes a water supply plate 721 disposed inside the whitening chamber 21. The water supply plate 721 is arc-shaped and arranged on the rice sieve 3. The water supply plate 721 is located above the washing brush 61. The water supply plate 721 has a cavity 722 for storing water inside. A plurality of water spray holes 723 are opened at the bottom of the cavity 722.

[0085] The water pump 713 pressurizes the cleaning liquid in the water tank 712 and then delivers it to the cavity 722 of the water supply plate 721 of the spray section 72 through the transfer pipe 714. When the liquid enters the cavity 722, it is temporarily stored and maintained at a certain pressure in the cavity 722 due to the closed structure of the water supply plate 721, except for the spray holes 723.

[0086] As liquid is continuously injected into cavity 722, the pressure gradually increases. When the pressure reaches a certain level, the liquid is sprayed out from multiple water spray holes 723 at the bottom of cavity 722, effectively rinsing away impurities such as rice bran and broken rice on rice sieve 3. At the same time, some liquid is also sprayed onto cleaning brush 61, wetting and cleaning it, thus improving its cleaning effect.

[0087] like Figure 1 and Figure 3 As shown, it should be further explained that valves are installed on the feed hopper 11, the discharge hopper 12 and the slag discharge pipe 8.

[0088] In actual use, the valves on the feed hopper 11 and the discharge hopper 12 are closed. At this time, the whitening chamber 21 and the collection chamber 22 are in a closed state.

[0089] The water pump 713 of the liquid supply unit 71 is started, and the cleaning fluid in the water tank 712 is pressurized and then transported to the cavity 722 through the transfer pipe 714. As the cleaning fluid is continuously injected, the pressure in the cavity 722 gradually increases, and the cleaning fluid is sprayed out from multiple water spray holes 723 at the bottom of the cavity 722.

[0090] Part of the cleaning solution acts directly on the surface of the rice sieve 3 to wash away impurities such as rice bran and broken rice on the rice sieve 3; another part of the cleaning solution enters the interior of the rice sieve 3 through the sieve holes 31 on the rice sieve 3. As the cleaning solution is continuously sprayed and penetrated, the interior of the rice sieve 3 gradually fills with the cleaning solution.

[0091] Start the drive unit 5 to make the rice milling roller 4 start rotating. During the rotation, the cleaning liquid inside the rice sieve 3 comes into full contact with the surface of the rice milling roller 4 and the inner surface of the rice sieve 3. Utilizing the fluidity and cleaning ability of the cleaning liquid, impurities such as rice bran and broken rice on the surface of the rice milling roller 4 are washed and dissolved.

[0092] After a period of continuous water injection and rotation cleaning by the rice milling roller 4, a large amount of cleaning liquid and impurities accumulate inside the rice sieve 3. At this point, open the valves on the slag discharge pipe 8 and the discharge hopper 12 to discharge the cleaning liquid containing impurities from the equipment. After discharging the cleaning liquid, inject clean water again for rinsing to remove residual impurities and detergent. Repeat the rinsing process several times to ensure that the inside of the rice milling roller 4 and the rice sieve 3 are thoroughly cleaned.

[0093] Through the synergistic effect of continuous water injection and the rotation of the rice milling roller 4, the cleaning solution can continuously rinse the rice milling roller 4, accelerating the dissolution and removal of impurities and improving the cleaning efficiency of the equipment. This significantly reduces the time and labor intensity of manual operation, and improves the automation level and production efficiency of the equipment.

[0094] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0095] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0096] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A sand roll rice mill characterized by, include: The frame (1) is provided with a processing chamber (2), which has a whitening chamber (21) for rice processing and a collection chamber (22) located below the whitening chamber (21) for collecting rice bran. The whitening chamber (21) is equipped with a rice sieve (3), and a rice milling roller (4) is rotatably installed inside the rice sieve (3). The two ends of the rice sieve (3) are open. A driving component (5) is installed on the frame (1). The driving component (5) is used to drive the rice milling roller (4) to rotate. The impurity removal mechanism (6) includes a cleaning brush (61) sleeved on the outside of the rice sieve (3) and a power unit (62) set on the frame (1). The cleaning brush (61) is used to scrub the rice sieve (3), and the power unit (62) is used to drive the cleaning brush (61) to reciprocate along the length of the rice sieve (3). The cleaning mechanism (7) includes a liquid supply section (71) disposed on the frame (1) and a spray section (72) disposed above the rice sieve (3), the spray section (72) being used to rinse the rice sieve (3) and the liquid supply section (71) being used to supply water to the spray section (72).

2. The sand roller rice milling machine as described in claim 1, characterized in that: The rice sieve (3) has sieve holes (31); The rice sieve (3) is cylindrical, with openings at both ends for feeding and discharging, respectively.

3. The sand roller rice milling machine as described in claim 2, characterized in that: The processing chamber (2) is provided with a feeding hopper (11) at the top and a discharging hopper (12) at one end. The feed hopper (11) is located above the feed opening of the rice sieve (3) and is connected to the whitening chamber (21). The discharge hopper (12) is located on one side of the discharge opening of the rice sieve (3) and is connected to the whitening chamber (21). The bottom of the processing chamber (2) is provided with a vertical tilt angle (23), and the right side of the vertical tilt angle (23) contacts the end of the rice sieve (3) to guide the rice into the rice sieve (3).

4. The sand roller rice milling machine as described in claim 1, characterized in that: The collection chamber (22) is located below the rice sieve (3), and the collection chamber (22) and the whitening chamber (21) are interconnected; The frame (1) is provided with a slag discharge pipe (8) that communicates with the collection chamber (22). The frame (1) is also equipped with a fan (9), the air inlet of the fan (9) is connected to the collection chamber (22), the collection chamber (22) is equipped with a filter screen (91) arranged at the air inlet of the fan (9), and the air outlet of the fan (9) is connected to the outside.

5. A sand roller rice milling machine as described in claim 3, characterized in that: The rice milling roller (4) includes a rotating shaft (41), a screw propeller (42) and a sand roller (43) connected from left to right. The other end of the sand roller (43) is rotatably connected to the processing chamber (2). The screw propeller (42) is used to transport rice inside the whitening chamber (21) and guide the rice to be sent out through the discharge hopper (12).

6. The sand roller rice milling machine as described in claim 5, characterized in that: The drive unit (5) includes a drive motor (51) mounted on the frame (1), one end of the rotating shaft (41) extends to the outside of the processing chamber (2), and pulleys (52) are mounted on the outward extension end of the rotating shaft (41) and the output shaft of the drive motor (51), and the two pulleys (52) are driven by a belt.

7. The sand roller rice milling machine as described in claim 1, characterized in that: The cleaning brush (61) includes a collar (611), with bristles arranged in a ring on the inner side of the collar (611). A guide rod (612) is provided on one side of the collar (611). A sliding groove is provided inside the processing chamber (2), and the guide rod (612) slides in cooperation with the sliding groove.

8. The sand roller rice milling machine as described in claim 7, characterized in that: The power unit (62) includes two housings (621) disposed opposite to each other at both ends of the processing chamber (2). A winding reel (622) is rotatably disposed inside the housing (621). A cable (623) is wound around the winding reel (622). The other end of the cable (623) passes through the housing (621) and the processing chamber (2) and is connected to both ends of the collar (611). The cable (623) and the guide rod (612) are arranged symmetrically in front and behind. The housing (621) is provided with a second drive motor (624), the output shaft of which is connected to the take-up reel (622) and is used to drive the take-up reel (622) to rotate.

9. A sand roller rice milling machine as described in claim 1, characterized in that: The liquid supply unit (71) includes a fixing plate (711) installed on the frame (1). A water tank (712) and a water pump (713) are installed on the fixing plate (711). The inlet of the water pump (713) is connected to the water tank (712), and the outlet of the water pump (713) is provided with a transfer pipe (714). The other end of the transfer pipe (714) is connected to the spray unit (72).

10. A sand roller rice milling machine as described in claim 1, characterized in that: The spray section (72) includes a water supply plate (721) disposed inside the whitening chamber (21). The water supply plate (721) is arc-shaped and arranged on the rice sieve (3). The water supply plate (721) is located above the washing brush (61). The water supply plate (721) has a cavity (722) for storing water inside. Multiple water spray holes (723) are opened at the bottom of the cavity (722).

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