Horizontal rice husking machine for rice processing

Abstract

The horizontal rice husking machine for rice processing comprises a main cylinder cover, the main cylinder cover comprises an outer fixed cylinder cover, an outer opening and closing cylinder cover, an inner fixed cylinder cover and an inner opening and closing cylinder cover, a tail end supporting plate is arranged at the rear end of the main cylinder cover, and a feeding machine box is arranged at the front end of the main cylinder cover; the bottom of the tail end supporting plate and the bottom of the feeding machine box are connected with a machine frame. According to the horizontal rice husking machine for rice processing, the movable screens capable of moving upwards are arranged on the two sides of the grinding roller, on one hand, the grinding roller is assisted in lifting rice from the lower end of the whitening chamber to the upper end, the distribution uniformity of rice grains at the upper end and the lower end of the whitening chamber is improved, and on the other hand, the flowing speed of the rice grains from the upper end to the lower end of the whitening chamber is reduced; the time that rice grains flow from top to bottom is prolonged, the rice grain whitening efficiency can be improved, the influence of gravity on the rice grains is made up through the movable screen capable of moving from the lower end to the upper end of the whitening chamber, and the uniformity of whitening pressure distribution in the whitening chamber is comprehensively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rice processing, and particularly to a horizontal rice milling machine for rice processing. Background Art

[0002] During the process of polishing brown rice into white rice, due to the rotation of the milling roller, movements such as collision, friction, and tumbling occur between the rice grains and the components in the milling chamber, as well as between the rice grains themselves. As a result, the surface layer of the rice grains is partially or completely removed to make them into rice that meets the quality requirements. The equipment used to remove the cortex of brown rice is called a rice milling machine. A rice milling machine with a horizontally installed main shaft of the milling roller is a horizontal rice milling machine. The horizontal rice milling machine includes a feeding device, a milling chamber, a discharging device, a transmission device, and a frame. The structure of the milling chamber determines the performance of the rice milling machine. The structure of the milling chamber mainly consists of three parts: a milling roller, a rice knife, and a rice sieve. A rice sieve is installed around the milling roller, and the gap between the rice sieve and the milling roller is the milling chamber. When the milling roller rotates at a high speed, the rough surface of the milling roller in the milling chamber continuously exerts a milling effect on the brown rice, causing the brown rice to be polished.

[0003] The horizontal rice milling machine has the advantages of stable operation, relatively small volume and machine weight per unit output, and high rice yield. Therefore, it belongs to the commonly used rice milling equipment in the prior art. However, it still has some defects as follows:

[0004] 1. Gravity affects the centrifugal acceleration of the rice grains, resulting in a difference between the upper and lower parts of the milling chamber, which affects the uniformity of the distribution of the milling pressure in the milling chamber.

[0005] 2. The defect of the horizontal rice milling machine is that bran is easily accumulated in the milling chamber. The traditional bran discharging method of the horizontal polishing machine basically adopts the method of sucking air under negative pressure. The biggest defect of this method is that under the dual influence of the self - gravity of the rice grains and the sucking force under negative pressure, during the process of the rice grains flowing in the polishing chamber, a large amount of rice grains will accumulate at the lower part of the polishing chamber, resulting in a large flow resistance, uneven pressure inside the machine, unsmooth bran discharging, uneven polishing, an increase in broken rice, and even excessive polishing causing energy consumption waste and other comprehensive problems.

[0006] Based on this, the present application proposes a horizontal rice milling machine for rice processing. Summary of the Invention

[0007] The present application proposes a horizontal rice milling machine for rice processing, which has the advantages of overcoming the influence of gravity on the centrifugal acceleration of rice grains and easy discharge of bran powder, so as to solve the problems raised in the above - mentioned background art.

[0008] To achieve the above object, the present application adopts the following technical solution: A horizontal rice milling machine for rice processing, comprising a general cylinder cover, a guide groove, a movable screen, and a wind bran removal assembly. A tail-end support plate is provided at the rear end of the general cylinder cover, and a feed box is provided at the front end of the general cylinder cover. A frame is connected to the bottoms of the tail-end support plate and the feed box. A milling roller is provided inside the general cylinder cover. The front end of the milling roller is flange-connected to a main shaft, and the main shaft extends to the outside of the feed box. A movable screen is arranged inside the general cylinder cover and is located on the outer periphery of the milling roller. The number of the movable screens is two, and the two movable screens are symmetrically arranged on the left and right with respect to the milling roller. Guide grooves are provided at the front and rear ends of the two movable screens, and milling knife assemblies are clamped at the upper and lower ends of the two movable screens. A wind bran removal assembly is arranged on the feed box, and a screen plate driving member for driving the movable screen to move is provided on the tail-end support plate.

[0009] Further, the guide groove includes an inner guide ring, an outer guide ring, and a connecting guide ring. The inner guide ring and the outer guide ring are both coaxial with the milling roller. The number of the connecting guide rings is two and are respectively located at the top and bottom of the inner guide ring. The inner guide ring, the outer guide ring, and the two connecting guide rings are connected end to end. Communication guide cavities are opened on the side walls of the inner guide ring, the outer guide ring, and the connecting guide ring facing the movable screen. One guide groove is provided at each end of the movable screen.

[0010] Further, the movable screen is formed by rotatably connecting a plurality of unit screen plates. The unit screen plate includes a screen plate body. Side grooves are spacedly connected to both sides of the screen plate body, and the side grooves on both sides of the screen plate body are arranged in a staggered manner. Baffle edges symmetrically arranged with the positions of the side grooves are provided on both side surfaces of the screen plate body. A column rod is rotatably connected in the side groove on one side of the screen plate body. Screen holes are opened on the screen plate body. The inner side surface of the baffle edge is arc-shaped and has the same diameter as the arc-shaped outer side surface of the side groove. Upper rotating rods and lower rotating rods are respectively arranged on the inner sides of the upper and lower ends of the movable screen. Screen plate gears are sleeved at the front and rear ends of the upper rotating rods and the lower rotating rods. The spaces between adjacent column rods form rod slot openings, and the teeth of the screen plate gears are engaged in the rod slot openings. The end portions of the column rods are slidably connected in the communication guide cavities of the guide grooves.

[0011] Further, a feed cavity is opened in the inner cavity of the feed box. A screw blade is provided on the outer wall of the main shaft located in the feed cavity. A feed groove communicating with the feed cavity is opened on the feed box; The movable screen forms an inner ring, an outer ring, and two connecting rings when moving along the guide groove. The inner ring is located on the side close to the milling roller. The inner ring and the outer ring are both coaxial with the milling roller. The inner rings of the two movable screens and the milling roller enclose a rice milling chamber, and the front and rear ends of the rice milling chamber are respectively communicated with the feed cavity and the rice discharge groove. An inner ring, an outer ring, and a connecting ring of each movable screen enclose a bran discharge cavity, and the bran discharge cavity is communicated with a bran powder discharge groove.

[0012] Furthermore, the wind-powered bran removal component includes an air distribution chamber and an air spray pipe. The middle part of the air distribution chamber is connected to an air inlet duct. The air distribution chamber and the air inlet duct are both opened inside a feed box. The air distribution chamber is arc-shaped. An air supply pipe connected to the air inlet duct is connected to the outer wall of the feed box. The air spray pipe is installed on the feed box. The air inlet end of the air spray pipe is connected to the air distribution chamber, and the outlet end of the air spray pipe faces the bran discharge chamber. The air distribution chamber is located directly in front of the bran discharge chamber. The air distribution chamber is coaxial with the bran discharge chamber, and a plurality of air spray pipes are evenly distributed along the arc-shaped air distribution chamber.

[0013] Furthermore, a front inner ring plate and a front outer ring plate are coaxially connected on the inner surface of the feed box, a rear outer ring plate is coaxially installed on the inner surface of the tail end support plate, the inner periphery of the rear outer ring plate is connected to the rear inner ring plate, the front inner ring plate and the rear inner ring plate are connected to the inner guide rings at the corresponding ends, and the front outer ring plate and the rear outer ring plate are connected to the outer guide rings at the corresponding ends.

[0014] Furthermore, a bran baffle plate is arranged in the bran discharge chamber, and a transverse support plate is connected to the end of the bran baffle plate, and the end of the transverse support plate away from the bran baffle plate is connected to the rear outer ring plate, the bran baffle plate is coaxial with the movable screen, the bran baffle plate is close to the outer wall of the bran discharge chamber, and inner convex plates are evenly arranged on the inner wall of the bran baffle plate, and the upper surface of the inner convex plate is parallel to the horizontal plane.

[0015] Furthermore, the interior of the roller is hollow, and an oblique air hole is opened on the inner wall of the roller, which is inclined toward the rear end of the roller. A plurality of convex strips are provided on the outer wall of the roller. The interior of the roller is connected to an air inlet pipe, which passes through the main shaft and extends to the outside of the main shaft.

[0016] Furthermore, the screen plate driving component includes an upper driven rod, a lower driven rod and a main driving rod. The upper driven rod and the lower driven rod are detachably connected to the upper rotating rod and the lower rotating rod respectively. The upper driven rod and the lower driven rod pass through the tail end support plate and are rotatably connected to the tail end support plate. The main driving rod is rotatably connected to the outer wall of the tail end support plate, and the upper driven rod and the lower driven rod are both transmission connected to the main driving rod.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present application provides a horizontal rice milling machine for rice processing. By arranging movable screens that can move upward on both sides of the milling roller, on the one hand, the milling roller is assisted to lift the rice from the lower end to the upper end of the milling chamber, thereby improving the uniformity of rice grain distribution at the upper and lower ends of the milling chamber. On the other hand, the speed at which the rice grains flow from the upper end to the lower end of the milling chamber is reduced, and the time for the rice grains to flow from the top to the bottom is prolonged, which is beneficial to improving the milling efficiency of the rice grains. The movable screen that can move from the lower end to the upper end of the milling chamber is used to compensate for the influence of gravity on the rice grains, thereby comprehensively improving the uniformity of the milling pressure distribution in the milling chamber.

[0019] 2. A horizontal rice milling machine provided by the present application replaces the existing fixed screen with two moving screens that move upward from the lower end to the upper end of the whitening chamber. The upward-moving moving screens lift the bran powder accumulated at the lower end of the whitening chamber upward, reducing the amount of bran powder at the lower end of the whitening chamber, facilitating the discharge of the bran powder in the whitening chamber by air flow. Cooperating with the wind-removing bran component arranged at the front end of the bran discharge chamber, the circumferentially uniformly distributed air spray pipes are used to achieve full coverage of the cross-section of the bran discharge chamber, avoiding dead corners that cause bran powder to remain in the bran discharge chamber, thereby improving the efficiency of bran powder discharge. In addition, the obliquely backward air flow blown out from the obliquely backward air holes can not only blow the bran powder into the bran discharge chamber, but also drive the relatively large amount of bran powder accumulated at the front end of the whitening chamber to move backward, facilitating the discharge of the bran powder at the front end of the whitening chamber, solving the problem of the accumulation of bran powder at the front end and the lower end of the whitening chamber, and effectively improving the efficiency of bran powder discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings forming a part of the specification depict the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application.

[0021] Referring to the drawings, the present disclosure can be more clearly understood according to the following detailed description, wherein:

[0022] Figure 1 is the sectional perspective view of the present application Figure 1 ;

[0023] Figure 2 is Figure 1 the enlarged schematic view at A of

[0024] Figure 3 is Figure 1 the enlarged schematic view at B of

[0025] Figure 4 is the sectional perspective view of the present application Figure 2 ;

[0026] Figure 5 is the external perspective view of the present application;

[0027] Figure 6 is the top view schematic diagram of the present application;

[0028] Figure 7 is Figure 6 the C-C sectional view of

[0029] Figure 8 is Figure 6 the D-D sectional view of

[0030] Figure 9 is Figure 6 the E-E sectional view of

[0031] Figure 10 This is a three-dimensional structure diagram of the guiding groove and the moving screen mesh of the present application;

[0032] Figure 11 This is a three-dimensional structure diagram of the unit sieve plate of the present application;

[0033] Figure 12 This is a side view of the unit sieve plate of the present application;

[0034] Figure 13 This is a three-dimensional structure diagram of the bran baffle of the present application;

[0035] Figure 14 This is a three-dimensional structure diagram of the grinding roller of the present application.

[0036] In the figure: 1, total cylinder cover; 101, outer fixed cylinder cover; 102, outer opening and closing cylinder cover; 103, inner fixed cylinder cover; 104, inner opening and closing cylinder cover; 2, tail-end support plate; 3, feed chassis; 301, feed cavity; 302, feed trough; Ring plate support assembly: 411, front inner ring plate; 412, front outer ring plate; 413, rear inner ring plate; 414, rear outer ring plate; 5, grinding roller; 501, inclined air holes; 502, convex strips; 6, main shaft; 7, air inlet pipe; 8, guiding groove; 8001, inner guiding ring; 8002, outer guiding ring; 8003, connecting guiding ring; 9, moving screen mesh; 91, unit sieve plate; 911, sieve plate body; 912, side groove; 913, retaining edge; 914, sieve holes; 915, column rod; 901, upper rotating rod; 902, lower rotating rod; 903, sieve plate gear; 10, bran baffle; 1001, horizontal support plate; 1002, inner convex plate; 11, sieve plate driving member; 111, upper driven rod; 112, lower driven rod; 113, main driving rod; 12, grinding knife assembly; 13, wind-powered bran removal assembly; 131, air distribution cavity; 132, air inlet duct; 133, air supply pipe; 134, air spraying pipe; 590, whitening chamber; 591, rice discharge trough; 990, bran discharge cavity; 991, bran powder discharge trough. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0038] Please refer to Figure 1 , appendix Figure 2 , appendix Figure 3 , appendix Figure 4 , appendix Figure 5 , appendix Figure 6 , appendix Figure 7 , appendix Figure 8, Attachment Figure 9 , Attachment Figure 10 , Attachment Figure 11 , Attachment Figure 12 , Attachment Figure 13 and Attachment Figure 14 , A horizontal rice milling machine for rice processing, comprising a general cylinder cover 1, a tail-end support plate 2 is provided at the rear end of the general cylinder cover 1, a feed box 3 is provided at the front end of the general cylinder cover 1, a frame is connected to the bottoms of the tail-end support plate 2 and the feed box 3, a milling roller 5 is provided inside the general cylinder cover 1, a main shaft 6 is flange-connected to the front end of the milling roller 5, the main shaft 6 extends to the outside of the feed box 3, a movable screen 9 is provided inside the general cylinder cover 1 and is located on the outer periphery of the milling roller 5, the number of the movable screens 9 is two and the two movable screens 9 are symmetrically arranged left and right, guide grooves 8 are provided at the front and rear ends of the two movable screens 9, milling knife assemblies 12 are clamped at the upper and lower ends of the two movable screens 9, the milling knife assemblies 12 are used for whitening brown rice, a wind-removing bran assembly 13 is provided on the feed box 3, and a screen plate driving member 11 for driving the movable screen 9 to move is provided on the tail-end support plate 2.

[0039] The general cylinder cover 1 includes an outer fixed cylinder cover 101, an outer opening and closing cylinder cover 102, an inner fixed cylinder cover 103 and an inner opening and closing cylinder cover 104. The outer fixed cylinder cover 101 and the outer opening and closing cylinder cover 102 form an outer cylinder cover, and the inner fixed cylinder cover 103 and the inner opening and closing cylinder cover 104 form an inner cylinder cover. The bottom ends of the outer fixed cylinder cover 101 and the outer opening and closing cylinder cover 102 are rotatably connected, and the top ends of the outer fixed cylinder cover 101 and the outer opening and closing cylinder cover 102 are detachably connected by bolts. The inner fixed cylinder cover 103 and the inner opening and closing cylinder cover 104 are respectively connected to the inner circumferences of the outer fixed cylinder cover 101 and the outer opening and closing cylinder cover 102 through connecting support plates, so that there is a certain space between the inner cylinder cover and the outer cylinder cover, and other mechanism components can be installed in this space. The tail-end support plate 2 covers the rear end of the general cylinder cover 1. Among them, the rear ends of the outer fixed cylinder cover 101 and the inner fixed cylinder cover 103 are fixedly connected to the tail-end support plate 2, and the front ends of the outer fixed cylinder cover 101 and the inner fixed cylinder cover 103 are fixed to the feed box 3, or a frame is installed on the outer wall of the outer fixed cylinder cover 101 to keep the outer fixed cylinder cover 101 and the inner fixed cylinder cover 103 fixed. The rear ends of the outer opening and closing cylinder cover 102 and the inner opening and closing cylinder cover 104 are in contact with the inner surface of the tail-end support plate 2, and the front ends of the outer opening and closing cylinder cover 102 and the inner opening and closing cylinder cover 104 are in contact with the inner surface of the feed box 3. When the general cylinder cover 1 is closed, it forms as Attachment Figure 5 , Attachment Figure 6The shown appearance state is such that the outer fixing cylinder cover 101 and the outer opening / closing cylinder cover 102 are closed, and the inner fixing cylinder cover 103 and the inner opening / closing cylinder cover 104 are closed. Bolts are used to connect the tops of the outer fixing cylinder cover 101 and the outer opening / closing cylinder cover 102. At this time, the surfaces of the front and rear ends of the inner fixing cylinder cover 103 and the inner opening / closing cylinder cover 104 are respectively in contact with the inner surface of the feed machine box 3 and the inner surface of the tail end support plate 2, so that the total cylinder cover 1 forms a closed state; when the total cylinder cover 1 needs to be opened, the bolts at the tops of the outer fixing cylinder cover 101 and the outer opening / closing cylinder cover 102 are removed, and then the outer opening / closing cylinder cover 102 is rotated to one side to be opened, realizing the opening and closing function of the total cylinder cover 1, which is convenient for installing the mechanism components inside the total cylinder cover 1.

[0040] Please refer to Figure 1 , attached Figure 2 , attached Figure 3 , attached Figure 4 , attached Figure 5 , attached Figure 6 , attached Figure 7 , attached Figure 8 , attached Figure 9 , attached Figure 10 , the moving screen 9 is located inside the inner cylinder cover, the grinding roller 5 is located in the inner cavity formed by the two moving screens 9, and the grinding roller 5 and the moving screen 9 enclose a rice milling chamber 590. The inner cavity of the feed machine box 3 is provided with a feed cavity 301, the feed cavity 301 is communicated with the rice milling chamber 590, a screw blade is provided on the outer wall of the main shaft 6 located in the feed cavity 301, and a feed groove 302 communicated with the feed cavity 301 is opened on the feed machine box 3. By driving the main shaft 6 to rotate, the grinding roller 5 is driven to rotate. When the main shaft 6 rotates, the paddy enters the feed cavity 301 through the feed groove 302 and enters the rice milling chamber 590 under the transportation of the screw; when the grinding roller 5 rotates, the paddy makes a centrifugal motion and is milled into polished rice under continuous collision. A rice discharge groove 591 is communicated with the rear end of the rice milling chamber 590, and the rice discharge groove 591 is used to convey the milled polished rice out.

[0041] Refer to attached Figure 1 , attached Figure 2 , attached Figure 3 , attached Figure 4 , attached Figure 6 , attached Figure 7 , attached Figure 8 , attached Figure 10 , attached Figure 11As shown, the guiding groove 8 includes an inner guiding ring 8001, an outer guiding ring 8002 and connecting guiding rings 8003. Both the inner guiding ring 8001 and the outer guiding ring 8002 are coaxial with the roller 5. There are two connecting guiding rings 8003 which are respectively located at the top and bottom of the inner guiding ring 8001. The inner guiding ring 8001, the outer guiding ring 8002 and the connecting guiding rings 8003 are connected end to end. A communicating guiding cavity is formed on the side wall of the inner guiding ring 8001, the outer guiding ring 8002 and the connecting guiding rings 8003 facing the movable screen 9. The end of the movable screen 9 moves along the communicating guiding cavity. Therefore, the shape of the guiding groove 8 defines the shape of the movable screen 9. There are two movable screens 9, and a guiding groove 8 is provided at the front and rear ends of each movable screen 9. Therefore, there are four guiding grooves 8.

[0042] On the inner surface of the feed box 3, a front inner ring plate 411 and a front outer ring plate 412 are coaxially connected. The front inner ring plate 411 is located on the inner circumference of the front outer ring plate 412. The front inner ring plate 411 and the front outer ring plate 412 are connected to the guiding grooves 8 at the front end of the movable screen 9, thereby playing a role in supporting and positioning the guiding grooves 8 at the front end of the movable screen 9. On the inner surface of the tail-end support plate 2, a rear outer ring plate 414 is coaxially assembled. The inner circumference of the rear outer ring plate 414 is connected with a rear inner ring plate 413. The rear outer ring plate 414 and the rear inner ring plate 413 are connected by strip-shaped plates. The rear inner ring plate 413 and the rear outer ring plate 414 are connected to the guiding grooves 8 at the rear end of the movable screen 9, thereby playing a role in supporting and positioning the guiding grooves 8 at the rear end of the movable screen 9. The front inner ring plate 411, the front outer ring plate 412, the rear inner ring plate 413, and the rear outer ring plate 414 are coaxial. The diameters of the front inner ring plate 411 and the rear inner ring plate 413 are the same, and the diameters of the front outer ring plate 412 and the rear outer ring plate 414 are the same. Here, the same diameter means that the inner diameter and the outer diameter correspond to the same. The front inner ring plate 411 and the rear inner ring plate 413 are connected to the inner guiding rings 8001 at the corresponding ends, and the front outer ring plate 412 and the rear outer ring plate 414 are connected to the outer guiding rings 8002 at the corresponding ends. Specifically, the front inner ring plate 411 is connected to the inner guiding rings 8001 of the two guiding grooves 8 at the front end of the movable screen 9, the front outer ring plate 412 is connected to the outer guiding rings 8002 of the two guiding grooves 8 at the front end of the movable screen 9, the rear inner ring plate 413 is connected to the inner guiding rings 8001 of the two guiding grooves 8 at the rear end of the movable screen 9, and the rear outer ring plate 414 is connected to the outer guiding rings 8002 of the two guiding grooves 8 at the rear end of the movable screen 9, thereby improving the stability of the guiding grooves 8. In this application, the connection between the guiding grooves 8 and the front inner ring plate 411, the front outer ring plate 412, the rear inner ring plate 413, and the rear outer ring plate 414 is a detachable connection. For example, screws, bolts, etc. can be used for connection. When disassembling, just remove the screws or bolts. The connecting parts such as screws and bolts are not shown in the figure. In addition, a cover is provided at the rear end of the rear inner ring plate 413, so that the rear inner ring plate 413 communicates with the whitening chamber 590. The rice discharge chute 591 penetrates through the outer fixed cylinder cover 101, the inner fixed cylinder cover 103, the rear outer ring plate 414, and the rear inner ring plate 413 to communicate with the whitening chamber 590. The rice discharge chute 591 is connected to any one of the outer fixed cylinder cover 101, the inner fixed cylinder cover 103, the rear outer ring plate 414, and the rear inner ring plate 413, so that the rice discharge chute 591 is fixed. The polished rice after whitening in the whitening chamber 590 is output through the rice discharge chute 591.

[0043] Refer to Attachment Figure 4 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Figure 10 , Attachment Figure 11 , Attachment Figure 12As shown in the figure, the two symmetrically distributed moving sieve meshes 9 are the left moving sieve mesh 9 and the right moving sieve mesh 9 respectively. The moving sieve mesh 9 is formed by rotatably connecting a plurality of unit sieve plates 91. The unit sieve plate 91 includes a sieve plate body 911. Side grooves 912 are spaced and connected to both sides of the sieve plate body 911. The side grooves 912 on both sides of the sieve plate body 911 are arranged in a staggered manner. It can be seen from the attached figure that after a side groove 912 is set at a certain position point on one side of the sieve plate body 911, no side groove 912 is set on the other side of the sieve plate body 911 that is symmetrical to this position point; on both side surfaces of the sieve plate body 911, there are retaining edges 913 that are symmetrical to the positions of the side grooves 912. A column rod 915 is rotatably connected in the side groove 912 on one side of the sieve plate body 911, and sieve holes 914 are formed in the sieve plate body 911. The inner side surface of the retaining edge 913 is arc-shaped and has the same diameter as the arc-shaped outer side surface of the side groove 912. When two unit sieve plates 91 are connected, the two unit sieve plates 91 are fitted along the side surface of one sieve plate body 911, and the column rod 915 of the other unit sieve plate 91 is passed through the side grooves 912 of the two unit sieve plates 91, so that the two unit sieve plates 91 are rotatably connected. A plurality of unit sieve plates 91 are connected end to end to form the moving sieve mesh 9. The end of the column rod 915 is inserted into the communicating guide cavity of the guide groove 8, and a plurality of unit sieve plates 91 slide along the communicating guide cavity of the guide groove 8 to form the moving sieve mesh 9. Therefore, the moving sieve mesh 9 forms an inner ring at the inner guide ring 8001, an outer ring at the outer guide ring 8002, and a connecting ring at the connecting guide ring 8003. Between the inner ring of the moving sieve mesh 9 and the roller 5 is the whitening chamber 590. The diameter of the outer ring is greater than that of the inner ring. The inner cavity in the middle of the moving sieve mesh 9 is a bran discharging cavity 990 surrounded by the inner ring and the outer ring. The cross section of the bran discharging cavity 990 is arc-shaped, and the bran discharging cavity 990 is communicated with a bran powder discharging groove 991. The bran powder discharging groove 991 penetrates through the rear outer ring plate 414 and is fixed on the rear outer ring plate 414. When the rice raw material is whitened in the whitening chamber 590, the bran powder shed from the rice enters the bran discharging cavity 990 through the sieve holes 914 and is discharged outward through the bran powder discharging groove 991. When the two connected unit sieve plates 91 rotate, the retaining edge 913 of one unit sieve plate 91 can cover the arc-shaped outer side surface of the side groove 912 of the other unit sieve plate 91, avoiding a large gap between the two unit sieve plates 91, ensuring the smoothness and continuity of the inner surface of the moving sieve mesh 9 facing the whitening chamber 590, and preventing the rice from being stuffed into the gap and broken. In this application, the bran powder discharging groove 991 is arranged on one side of the outer opening and closing cylinder cover 102. Therefore, to ensure the opening and closing function of the outer opening and closing cylinder cover 102, openings through which the bran powder discharging groove 991 can pass are opened on both the outer opening and closing cylinder cover 102 and the inner opening and closing cylinder cover 104. However, the bran powder discharging groove 991 can also be arranged on one side of the outer fixed cylinder cover 101, as long as it is ensured that the bran powder discharging groove 991 is communicated with the bran discharging cavity 990.

[0044] Refer to the attached Figure 1 、attachedFigure 2 、Attached Figure 3 、Attached Figure 4 、Attached Figure 6 、Attached Figure 7 、Attached Figure 8 、Attached Figure 10 As shown, in the bran discharge chamber 990, there is an upper rotating rod 901 located at the top of the moving screen 9 and a lower rotating rod 902 located at the bottom of the moving screen 9. The upper rotating rod 901 is coaxial with the upper connecting ring of the moving screen 9, and the lower rotating rod 902 is coaxial with the lower connecting ring of the moving screen 9. Sieve plate gears 903 are sleeved on the front and rear ends of both the upper rotating rod 901 and the lower rotating rod 902. The interval between adjacent column rods 915 forms a rod slot opening, and the teeth of the sieve plate gears 903 are engaged in the rod slot opening, so that the rotation of the sieve plate gears 903 drives the moving screen 9 to move along the guide slot 8. The upper rotating rod 901 and the lower rotating rod 902 at the upper and lower ends of each moving screen 9 rotate synchronously, driving their respective sieve plate gears 903 to rotate. The sieve plate gears 903 drive the moving screen 9 to move by driving the column rod 915 to move. Since both ends of the column rod 915 are inserted into the guide slot 8, the moving screen 9 moves along the guide slot 8.

[0045] Taking attached Figure 7 、Attached Figure 8 As shown for example, in this application, if the grinding roller 5 rotates counterclockwise, the right moving screen 9 rotates clockwise along the guide slot 8, and the left moving screen 9 rotates counterclockwise along the guide slot 8. The inner circles of both the left moving screen 9 and the right moving screen 9 close to the grinding roller 5 move from the lower end to the upper end of the guide slot 8. When the inner circle of the moving screen 9 moves from bottom to top, it can drive the bran powder accumulated at the bottom of the whitening chamber 590 to disperse upward, reducing the amount of bran powder accumulated at the bottom, which is beneficial for the bran powder to enter the bran discharge chamber 990 through the sieve holes 914, facilitating the discharge of the bran powder from the whitening chamber 590.

[0046] In addition, in the right half circle of the whitening chamber 590, the rice is greatly affected by its own gravity when moving from bottom to top, resulting in uneven distribution of the rice in the upper and lower half circles of the whitening chamber 590, that is, a state where the amount of rice in the lower half circle of the whitening chamber 590 is much larger than that in the upper half circle, leading to uneven whitening pressure in the whitening chamber. In this application, the right moving screen 9 moving from bottom to top drives the rice to move upward, increasing the upward movement speed of the rice, greatly improving the uniformity of the rice distribution in the whitening chamber 590. In the left half circle of the whitening chamber 590, the left moving screen 9 moving from bottom to top can slow down the falling speed of the rice, extending the whitening time of the rice in the left half circle of the whitening chamber 590, making up for the defect that the whitening time of the rice in the left half circle of the whitening chamber 590 is short due to the rapid fall of the rice affected by gravity, further improving the uniformity of the rice whitening in the whitening chamber and also being beneficial for uniform whitening pressure in the whitening chamber.

[0047] Refer to attached Figure 1, Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 and attached Figure 10 As shown, the sieve plate driving member 11 is used to drive the mobile screen 9 to move. The sieve plate driving member 11 is located at the rear end of the mobile screen 9. The sieve plate driving member 11 includes an upper driven rod 111, a lower driven rod 112 and a main driving rod 113. The upper driven rod 111 and the lower driven rod 112 are detachably connected to the upper rotating rod 901 and the lower rotating rod 902 respectively, so that the upper driven rod 111 and the upper rotating rod 901 can be separated, and the lower driven rod 112 and the lower rotating rod 902 can also be separated. 2 penetrates the tail end support plate 2 and is rotatably connected to the tail end support plate 2. The upper driven rod 111 and the lower driven rod 112 can be rotatably connected to the inner wall of the tail end support plate 2 using bearings. The main driving rod 113 is rotatably connected to the outer wall of the tail end support plate 2. The upper driven rod 111 and the lower driven rod 112 are both connected to the main driving rod 113 in a transmission manner. The main driving rod 113 is connected to the main driving motor. The main driving motor is not shown in the figure. In actual application, the main driving motor can be reasonably installed on the frame according to the size of the space. The main driving motor drives the main driving rod 113 to rotate, which drives the upper driven rod 111 and the lower driven rod 112 to rotate, and then drives the upper rotating rod 901 and the lower rotating rod 902 to rotate, and finally drives the movable screen 9 to move along the guide groove 8. The rotation direction of the main driving rod 113 is consistent with the required moving direction of the corresponding movable screen 9. The accompanying drawings in the present application show that the transmission connection between the upper driven rod 111, the lower driven rod 112 and the main driving rod 113 is achieved through belts and pulleys. In this embodiment, each of the two movable screens 9 is correspondingly provided with a screen plate driving member 11.

[0048] The purpose of adopting a detachable connection method with the upper driven rod 111 and the lower driven rod 112 to the upper rotating rod 901 and the lower rotating rod 902 respectively is to facilitate disconnection of their respective connections. Since the grinding knife assembly 12 is clamped between the two movable screens 9, when the grinding knife assembly 12 needs to be replaced, the upper driven rod 111 and the lower driven rod 112 are disassembled from the upper rotating rod 901 and the lower rotating rod 902 respectively, and then the guide groove 8 is removed from the front inner ring plate 411, the front outer ring plate 412, the rear inner ring plate 413, and the rear outer ring plate 414. In this way, the guide groove 8 and the movable screen 9 move as a whole, so that the grinding knife assembly 12 can be taken out from between the two movable screens 9.

[0049] In order to ensure that the bran powder can be discharged smoothly from the bran discharge chamber 990, a wind bran removal component 13 located at the front end of the bran discharge chamber 990 is provided on the feeder housing 3. Figure 1 , Attachment Figure 2 , Attachment Figure 4 , Attachment Figure 8 and attached Figure 9As shown in the figure, the wind-force bran removing assembly 13 includes a wind equalizing chamber 131 and a blast pipe 134. The middle of the wind equalizing chamber 131 communicates with an air inlet duct 132. Both the wind equalizing chamber 131 and the air inlet duct 132 are arranged inside the feed bin 3. The wind equalizing chamber 131 is arc-shaped. A blast pipe 133 communicating with the air inlet duct 132 is connected to the outer wall of the feed bin 3. The blast pipe 134 is installed on the feed bin 3. The air inlet end of the blast pipe 134 communicates with the wind equalizing chamber 131, and the outlet end of the blast pipe 134 faces the bran discharging chamber 990. The wind equalizing chamber 131 is located directly in front of the bran discharging chamber 990, and the wind equalizing chamber 131 and the bran discharging chamber 990 are coaxial. A plurality of blast pipes 134 are evenly distributed along the arc-shaped wind equalizing chamber 131. Since the wind equalizing chamber 131 and the bran discharging chamber 990 are coaxial, the blast pipes 134 are regarded as evenly distributed along the circumferential direction of the bran discharging chamber 990. The air flow ejected from the blast pipes 134 enters the bran discharging chamber 990 from the front end of the bran discharging chamber 990 and flows towards the rear end of the bran discharging chamber 990. Since the blast pipes 134 are distributed along the circumferential direction of the bran discharging chamber 990, the air flow ejected from the blast pipes 134 can cover the entire inner cavity of the bran discharging chamber 990, so as to discharge the bran powder entering the bran discharging chamber 990 through the sieve holes 914 through the bran powder discharging groove 991. In this embodiment, the blast pipe 134 adopts a Venturi tube, which can increase the outlet speed of the air flow. There are two wind-force bran removing assemblies 13, corresponding to the bran discharging chambers 990 of the two movable sieves 9 respectively. The blast pipe 133 is connected to an air pump 1. The air pump 1 is not shown in the drawings of this application. The air pump 1 is used to convey air through the blast pipe 133, the air inlet duct 132, and into the wind equalizing chamber 131, and eject it into the bran discharging chamber 990 through the blast pipe 134.

[0050] Refer to the attached Figure 1 Attachments Figure 2 Attachments Figure 3 Attachments Figure 7 Attachments Figure 8 Attachments Figure 10 and attachments Figure 13As shown in the figure, a bran baffle 10 is provided in the bran discharge chamber 990. A transverse support plate 1001 is connected to the end of the bran baffle 10. One end of the transverse support plate 1001 away from the bran baffle 10 is connected to the rear outer ring plate 414, realizing the function of supporting the bran baffle 10. The front end of the bran baffle 10 can also be connected to the transverse support plate 1001 and the transverse support plate 1001 is connected to the front outer ring plate 412, realizing the fixation of both ends of the bran baffle 10. The bran baffle 10 is arc-shaped, the bran baffle 10 is coaxial with the moving screen 9, the bran baffle 10 is close to the outer wall of the bran discharge chamber 990, that is, the bran baffle 10 is close to the outer ring of the moving screen 9. Inner convex plates 1002 are uniformly provided on the inner wall of the bran baffle 10, and the upper surface of the inner convex plate 1002 is parallel to the horizontal plane. The bran baffle 10 is used to receive the bran powder entering the bran discharge chamber 990, preventing the bran powder from flying out of the sieve holes 914 on the outer ring of the moving screen 9 to the outside of the bran discharge chamber 990. The horizontal surface of the inner convex plate 1002 is used to receive the bran powder, preventing the bran powder from falling along the inner surface of the bran baffle 10 to the bottom of the bran discharge chamber 990, avoiding the accumulation of bran powder, which is beneficial to the outward transportation of the bran powder.

[0051] Refer to the attached Figure 1 、attachment Figure 2 、attachment Figure 3 、attachment Figure 4 、attachment Figure 5 、attachment Figure 6 、attachment Figure 7 、attachment Figure 8 、attachment Figure 10 、attachment Figure 14 As shown in the figure, the inside of the roller 5 is hollow. Inclined air holes 501 are formed on the inner wall of the roller 5. The inclined air holes 501 are inclined towards the rear end of the roller 5. The inclination angle of the inclined air holes 501 is greater than 0° and less than or equal to 90°. The inclination angle of the inclined air holes 501 shown in the attached drawings of this application is 45°. A number of convex strips 502 are provided on the outer wall of the roller 5. The convex strips 502 are used to promote the turning of rice and improve the whitening effect. An air inlet pipe 7 is connected to the inside of the roller 5. The air inlet pipe 7 penetrates through the main shaft 6 and extends to the outside of the main shaft 6. The air inlet pipe 7 is connected to an air pump two (not shown in the attached drawings). The air pump two transports air through the air inlet pipe 7 into the inner cavity of the roller 5. The air is sprayed into the whitening chamber 590 through the inclined air holes 501, so as to blow the bran powder towards the moving screen 9. The bran powder enters the bran discharge chamber 990 through the sieve holes 914 under the action of the air flow.

[0052] The inclined air holes 501 that are inclined towards the rear end of the roller 5 have the following functions: First, the airflow ejected from the inclined air holes 501 has a component velocity in the horizontal direction towards the rear end of the roller 5, driving the bran powder to disperse towards the rear end of the roller 5, promoting the uniform distribution of the bran powder along the axial direction of the roller 5, thereby thinning the powder layer of the bran powder, preventing the accumulation of the bran powder, facilitating the flow of the bran powder into the bran discharge chamber 990, and solving the situation in the prior art where there is more bran powder at the front end of the whitening chamber 590 and less bran powder at the rear end due to the high whitening pressure at the front end of the whitening chamber 590, achieving the purpose of solving the problem that the bran powder accumulates at the front end and is difficult to be carried out by the airflow. Second, the airflow ejected from the inclined air holes 501 has a component velocity perpendicular to the inner surface of the moving screen 9, thereby driving the bran powder to pass through the screen holes 914 and enter the bran discharge chamber 990, realizing the bran cleaning function. Third, the overall airflow ejected from the inclined air holes 501 is inclined towards the rear end of the roller 5, while the airflow ejected from the air spraying pipe 134 is horizontal towards the rear end of the roller 5. Therefore, the impact force of the inclined airflow ejected from the inclined air holes 501 and the horizontal airflow ejected from the air spraying pipe 134 in the radial direction of the roller 5 is reduced, thus ensuring the effect of transporting the bran powder in the horizontal direction by the air spraying pipe 134.

[0053] In summary, the working principle of the present application is as follows:

[0054] First, drive the main shaft 6 to rotate, and the main shaft 6 drives the roller 5 to rotate; start the first air pump, and the first air pump transports air through the air supply pipe 133, the air inlet duct 132 to the air distribution chamber 131, and sprays it into the bran discharge chamber 990 through the air spraying pipe 134; start the second air pump, and the second air pump transports air through the air inlet pipe 7 into the inner cavity of the roller 5, and the air sprays into the whitening chamber 590 through the inclined air holes 501 to blow the bran powder towards the moving screen 9; start two main drive motors, and the two main drive motors drive the corresponding main drive rods 113 to rotate respectively, and then drive the corresponding upper driven rods 111 and lower driven rods 112 to rotate, and finally drive the corresponding upper rotating rods 901 and lower rotating rods 902 to rotate, so as to finally drive the corresponding moving screen 9 to move along the guide groove 8. Specifically, in the state where the roller 5 rotates counterclockwise, the right moving screen 9 rotates clockwise along the guide groove 8, and the left moving screen 9 rotates counterclockwise along the guide groove 8, so that the inner circles of the left moving screen 9 and the right moving screen 9 close to the roller 5 both move from the lower end of the guide groove 8 to the upper end of the guide groove 8;

[0055] Secondly, pour the brown rice into the feeding chamber 301 through the feeding chute 302. The brown rice is conveyed into the whitening chamber 590 under the transportation of the auger on the outer wall of the main shaft 6 and continuously moves towards one end of the rice discharge chute 591. When the grinding roller 5 rotates, the brown rice makes a centrifugal motion and is whitened into polished rice under continuous collisions. At the same time, the inner wall of the right moving sieve 9 uses friction to lift the rice in the right half circle of the whitening chamber 590 upwards. The left moving sieve 9 has an obstructive effect on the rice falling down in the left half circle of the whitening chamber 590, slowing down the falling of the rice. The two work together to improve the uniformity of the distribution of rice in the whitening chamber and also improve the consistency of the rice whitening degree. Moreover, the inner circles of the left and right moving sieves 9 move from bottom to top, lifting and evenly dispersing the bran powder at the bottom of the whitening chamber, which is beneficial for the air flow to blow the bran powder into the bran discharge chamber 990.

[0056] Meanwhile, the bran baffle 10 plays a blocking role on the bran powder radially entering the bran discharge chamber 990. Firstly, it prevents the bran powder from contacting the outer circle of the moving sieve 9, and through the inner convex plate 1002, it prevents the bran powder from falling to the bottom end of the bran discharge chamber 990 and accumulating and being difficult to discharge. It cooperates with the air flow sprayed into the bran discharge chamber 990 by the air spray pipe 134 to push the bran powder towards one end of the bran powder discharge chute 991 and discharge it.

[0057] Finally, the rice in the whitening chamber 590 is conveyed out through the rice discharge chute 591.

Claims

1. A horizontal rice milling machine for rice processing, characterized in that, It includes a general cylinder cover (1). A tail-end support plate (2) is provided at the rear end of the general cylinder cover (1). A feed machine box (3) is provided at the front end of the general cylinder cover (1). A rolling roller (5) is provided inside the general cylinder cover (1). A movable screen (9) that is symmetric about the left and right and is located on the outer circumference of the rolling roller (5) is provided inside the general cylinder cover (1). Guide grooves (8) are provided at the front and rear ends of the two movable screens (9). A wind-powered bran removal assembly (13) is provided on the feed machine box (3). A screen plate driving member (11) for driving the movable screen (9) to move is provided on the tail-end support plate (2).

2. The horizontal rice milling machine for rice processing according to claim 1, characterized in that, The guide groove (8) includes an inner guide ring (8001), an outer guide ring (8002), and a connecting guide ring (8003). Both the inner guide ring (8001) and the outer guide ring (8002) are coaxial with the rolling roller (5). The number of the connecting guide rings (8003) is two and they are respectively located at the top end and the bottom end of the inner guide ring (8001). The inner guide ring (8001), the outer guide ring (8002), and the two connecting guide rings (8003) are connected end to end. A communicating guide cavity is provided on the side wall of the inner guide ring (8001), the outer guide ring (8002), and the connecting guide ring (8003) facing the movable screen (9). Each end of the movable screen (9) is provided with a guide groove (8).

3. The horizontal rice milling machine for rice processing according to claim 2, characterized in that, The movable screen (9) is formed by rotatably connecting a plurality of unit screen plates (91). The unit screen plate (91) includes a screen plate body (911). Side grooves (912) are spaced and connected to both sides of the screen plate body (911). The side grooves (912) on both sides of the screen plate body (911) are arranged in a staggered manner. Blocking edges (913) that are symmetric with the positions of the side grooves (912) are provided on both side surfaces of the screen plate body (911). A column rod (915) is rotatably connected in the side groove (912) on one side of the screen plate body (911). Screen holes (914) are provided on the screen plate body (911). The inner side surface of the blocking edge (913) is arc-shaped and has the same diameter as the arc-shaped outer side surface of the side groove (912). Upper rotating rods (901) and lower rotating rods (902) are respectively provided on the inner sides of the upper and lower ends of the movable screen (9). Screen plate gears (903) are sleeved on the front and rear ends of the upper rotating rod (901) and the lower rotating rod (902). The space between adjacent column rods (915) forms a rod groove opening. The teeth of the screen plate gears (903) are engaged in the rod groove opening. The end of the column rod (915) is slidably connected in the communicating guide cavity of the guide groove (8).

4. The horizontal rice milling machine for rice processing according to claim 3, characterized in that, The front flange of the roller (5) is connected to the main shaft (6). The inner cavity of the feed hopper (3) is provided with a feed cavity (301). On the outer wall of the main shaft (6) located in the feed cavity (301), there are screw blades. The feed hopper (3) is provided with a feed chute (302) communicating with the feed cavity (301). The moving screen (9) moves along the guide groove (8) to form an inner ring, an outer ring and two connecting rings. The inner ring is located on the side close to the roller (5). The inner ring and the outer ring are both coaxial with the roller (5). The inner rings of the two moving screens (9) and the roller (5) enclose a rice whitening chamber (590). The front and rear ends of the rice whitening chamber (590) are respectively communicated with the feed cavity (301) and the rice discharge chute (591). The inner ring, the outer ring and the connecting ring of each moving screen (9) enclose a bran discharge cavity (990). The bran discharge cavity (990) is communicated with a bran powder discharge chute (991).

5. The horizontal rice milling machine for rice processing according to claim 4, wherein, The air bran removal assembly (13) includes an air equalizing chamber (131) and an air spray pipe (134). The middle of the air equalizing chamber (131) is communicated with an air inlet duct (132). The air equalizing chamber (131) and the air inlet duct (132) are both arranged inside the feed hopper (3). The air equalizing chamber (131) is arc-shaped. The outer wall of the feed hopper (3) is connected with an air supply pipe (133) communicating with the air inlet duct (132). The air spray pipe (134) is installed on the feed hopper (3). The air inlet end of the air spray pipe (134) is communicated with the air equalizing chamber (131). The outlet end of the air spray pipe (134) faces the bran discharge cavity (990). The air equalizing chamber (131) is located directly in front of the bran discharge cavity (990). The air equalizing chamber (131) is coaxial with the bran discharge cavity (990). A plurality of air spray pipes (134) are evenly distributed along the arc-shaped air equalizing chamber (131).

6. The horizontal rice milling machine for rice processing according to claim 2, wherein, On the inner surface of the feed hopper (3), a front inner ring plate (411) and a front outer ring plate (412) are coaxially connected. On the inner surface of the tail end support plate (2), a rear outer ring plate (414) is coaxially assembled. The inner circumference of the rear outer ring plate (414) is connected with a rear inner ring plate (413). The front inner ring plate (411), the rear inner ring plate (413) are connected to the inner guide ring (8001) at the corresponding end. The front outer ring plate (412), the rear outer ring plate (414) are connected to the outer guide ring (8002) at the corresponding end.

7. The horizontal rice milling machine for rice processing according to claim 6, characterized in that, A bran baffle (10) is arranged in the bran discharge cavity (990). The end of the bran baffle (10) is connected with a transverse support plate (1001). The end of the transverse support plate (1001) far away from the bran baffle (10) is connected to the rear outer ring plate (414). The bran baffle (10) is coaxial with the moving screen (9). The bran baffle (10) is close to the outer wall of the bran discharge cavity (990). On the inner wall of the bran baffle (10), inner convex plates (1002) are evenly arranged. The upper surface of the inner convex plate (1002) is parallel to the horizontal plane.

8. The horizontal rice milling machine for rice processing according to claim 4, characterized in that, The interior of the roller (5) is hollow, and an oblique air hole (501) is provided on the inner wall of the roller (5), the oblique air hole (501) is inclined toward the rear end of the roller (5), and a plurality of convex strips (502) are provided on the outer wall of the roller (5). The interior of the roller (5) is connected to an air inlet pipe (7), and the air inlet pipe (7) passes through the main shaft (6) and extends to the outside of the main shaft (6).

9. The horizontal rice milling machine for rice processing according to claim 3, wherein, The screen plate driving member (11) comprises an upper driven rod (111), a lower driven rod (112) and a main driving rod (113); the upper driven rod (111) and the lower driven rod (112) are detachably connected to the upper rotating rod (901) and the lower rotating rod (902) respectively; the upper driven rod (111) and the lower driven rod (112) penetrate the rear end support plate (2) and are rotatably connected to the rear end support plate (2); the main driving rod (113) is rotatably connected to the outer wall of the rear end support plate (2); and the upper driven rod (111) and the lower driven rod (112) are both transmission-connected to the main driving rod (113).

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