A multi-stage drying device for water-milled glutinous rice flour

Abstract

The present application provides a multi-stage drying device for water-milled glutinous rice flour, belonging to the technical field of drying. It includes an outer cylinder composed of a housing, a first fixing plate and a second fixing plate, a rotating source for driving the housing to rotate, and an inner cylinder. The left end of the inner cylinder is arranged on the first fixing plate and the right end passes through the second fixing plate. The center of the inner cylinder is located below the center of the outer cylinder. A feed hole is formed on the side wall of the inner cylinder located inside the outer cylinder. A material suction mechanism is arranged on the frame for sucking the glutinous rice flour in the outer cylinder through the inner cylinder. A first screw rod and a second screw rod are respectively connected to the inner wall of the housing and the outer wall of the inner cylinder. When the first screw rod rotates to the lower part, it can cooperate with the second screw rod to break the glutinous rice flour blocks, and heating sheets are installed on both of them. Through the cooperation of the first screw rod and the second screw rod, the present application can break the glutinous rice flour blocks and disperse the glutinous rice flour, thereby reducing the drying time of the glutinous rice flour and improving the drying efficiency of the glutinous rice flour.

Description

Technical Field

[0001] The present application relates to the technical field of drying, and particularly to a multi-stage drying device for water-milled glutinous rice flour. Background Art

[0002] Water-milled glutinous rice flour is a delicate powder made from glutinous rice through soaking and grinding. In the production of water-milled glutinous rice flour, for reasons such as extending the shelf life, improving storage convenience, enhancing applicability, and preventing bacterial growth, it is necessary to dry the water-milled glutinous rice flour.

[0003] Referring to the Chinese patent document with the publication number CN220670032U and the name of a drying device for water-milled glutinous rice flour, this patent includes a device main body, a front support, a rear support, and a motor. The device main body is a tubular structure that is open at both the front and rear. A blast chamber, a feed chamber, and a first groove are provided inside the front support, and a second groove and an opening fan are provided inside the rear support. The front and rear ends of the device main body are respectively movably arranged in the first groove and the second groove, and the device main body is inclined. During operation, the opening fan is closed, the motor is started, and at this time, the device main body starts to rotate. After adding materials from the feed port, the feed port is closed, and the materials enter the feed chamber. The blast chamber starts to convey hot air. Since the first groove is higher than the second groove, that is, the device main body is installed in an inclined shape, the materials are affected by the thrust of the hot air conveyed by the blast chamber and their own gravity and enter the device main body, and there is a tendency to slide towards the rear end of the device main body. During the rotation of the device main body, the contact area between the materials and the hot air will increase, thereby accelerating the drying of the materials. Finally, the materials move to a position close to the rear support. At this time, the opening fan is opened, and the materials are taken out to complete the drying process of the materials.

[0004] Referring to the above technical solution, when the glutinous rice flour is input into the device main body, since the glutinous rice flour itself is relatively wet, agglomeration may occur. It is not easy to dry the inside of these agglomerated glutinous rice flour, and it takes a long time to dry the glutinous rice flour, which affects the drying efficiency. Summary of the Invention

[0005] In order to improve the drying efficiency of glutinous rice flour and ensure the normal progress of the drying process of glutinous rice flour, the present application provides a multi-stage drying device for water-milled glutinous rice flour.

[0006] The present application provides a multi-stage drying device for water-milled glutinous rice flour, adopting the following technical solutions. A multi-stage drying device for water-milled glutinous rice flour includes a frame, a feed hopper. A cylindrical outer barrel composed of a housing, a first fixing plate, and a second fixing plate is horizontally arranged on the frame. A rotating source for driving the housing to rotate is installed on the frame. The feed hopper is communicated with the first fixing plate. An inner barrel is arranged on the frame. The left end of the inner barrel is arranged on the first fixing plate and the right end passes through the second fixing plate. The central axis of the inner barrel is located below the central axis of the outer barrel. A plurality of feed holes are evenly arranged on the side wall of the inner barrel between the first fixing plate and the second fixing plate. A material suction mechanism is arranged on the frame for sucking the glutinous rice flour in the outer barrel through the inner barrel. A plurality of first spiral rods and second spiral rods are respectively fixedly connected to the inner side wall of the outer barrel and the outer side wall of the inner barrel. When the first spiral rod and the second spiral rod rotate to the lower part, they can cooperate to break the glutinous rice flour blocks. Heating sheets are installed on the first spiral rod and the second spiral rod.

[0007] By adopting the above technical solutions, when drying the glutinous rice flour, under the action of the material suction mechanism, the glutinous rice flour first enters the outer barrel from the feed hopper. The heating sheets on the outer housing and the inner barrel heat the glutinous rice flour and the air to dry the glutinous rice flour. At the same time, the rotation of the outer housing drives the first spiral rod to rotate. When the first spiral rod rotates to the lower part, it can cooperate with the second spiral rod to break the glutinous rice flour blocks. Subsequently, the small-particle glutinous rice flour enters the inner barrel through the feed holes under the action of the material suction mechanism, and the remaining glutinous rice flour blocks continue to be dried and broken in the outer barrel.

[0008] In the present application, through the arrangement of the first spiral rod and the second spiral rod, they can cooperate with each other to break the glutinous rice flour blocks, reducing the time required for drying the glutinous rice flour and improving the drying efficiency of the glutinous rice flour. At the same time, they can disperse the glutinous rice flour, facilitating the drying of the glutinous rice flour and being beneficial to improving the drying effect of the glutinous rice flour. At the same time, the rotation of the outer housing can effectively prevent the glutinous rice flour from accumulating under the outer housing, ensuring that the material always remains in a dispersed state during the drying process and improving the uniformity of drying.

[0009] Optionally, the inner barrel is rotatably arranged on the frame, and the inner barrel is respectively rotatably connected to the first fixing plate and the second fixing plate. A driving mechanism is arranged on the outer housing to drive the inner barrel to rotate and make the rotation direction of the inner barrel opposite to that of the outer barrel. The spiral directions of the first spiral rod and the second spiral rod are opposite.

[0010] By adopting the above technical solutions, the rotation of the inner barrel and the arrangement of the spiral direction of the second spiral rod can further improve the dispersion effect of the glutinous rice flour, which is beneficial to improving the drying effect of the glutinous rice flour.

[0011] Optionally, a cleaning brush is rotatably arranged between the inner top wall of the outer housing and the outer top wall of the inner barrel. The two ends of the cleaning brush respectively pass through the first fixing plate and the second fixing plate and are rotatably connected to the frame. The cleaning brush can abut against the inner side wall of the outer housing and the outer side wall of the inner barrel.

[0012] By adopting the above technical solution, the cleaning brush can, on the one hand, clean the inner side wall of the outer cylinder and the outer side wall of the inner cylinder, reducing the amount of residual glutinous rice flour on the outer cylinder and the inner cylinder, reducing waste, preventing the residues from aging due to long-term stay, maintaining the cleanliness and operating efficiency of the equipment, and reducing the risk of blockage of the feed hole. On the other hand, it can break the glutinous rice flour lumps between the first screw rod and the inner side wall of the outer cylinder and between the second screw rod and the outer side wall of the inner cylinder.

[0013] Optionally, fixing rods are fixedly connected to both the inner side wall of the outer shell and the outer side wall of the inner cylinder, and heating sheets are installed on the fixing rods.

[0014] By adopting the above technical solution, the fixing rods can drive the glutinous rice flour to rise from the bottom upwards, facilitating the rapid drying of the glutinous rice flour and being beneficial to improving the drying efficiency of the glutinous rice flour.

[0015] Optionally, a support cylinder is installed on the frame. The left end of the support cylinder passes through the right side wall of the inner cylinder, and a baffle is arranged below the inner cylinder. The baffle is fixedly connected to the support cylinder through a connecting rod.

[0016] By adopting the above technical solution, when the first screw rod and the second screw rod cooperate to break the glutinous rice flour, the baffle can prevent the glutinous rice flour from directly entering the inner cylinder from below, reducing the risk of undried glutinous rice flour directly entering the inner part of the inner cylinder and ensuring the quality of preliminary drying.

[0017] Optionally, the material suction mechanism includes a discharge pipe communicated with the right end of the support cylinder. A cyclone separator communicated with an induced draft fan is arranged between the discharge pipes, and a feed inlet is formed on the side wall of the support cylinder at one end located inside the inner cylinder.

[0018] By adopting the above technical solution, when drying the glutinous rice flour, the moisture in the glutinous rice flour will form water vapor. Under the action of the induced draft fan, the glutinous rice flour and the gas can enter the discharge pipe through the inner cylinder and the feed inlet, and then, under the action of the cyclone separator, the glutinous rice flour and the gas are separated and flow out through the discharge pipe.

[0019] Optionally, a spiral sheet is arranged between the outer cylinder and the support cylinder, and the spiral sheet is fixedly connected to the outer side wall of the support cylinder, and heating sheets are arranged on the spiral sheet.

[0020] By adopting the above technical solution, the spiral sheet can not only increase the drying area of the glutinous rice flour but also block the movement of the glutinous rice flour to increase the residence time inside the pipeline, thereby improving the drying effect of the glutinous rice flour.

[0021] Optionally, the driving mechanism includes an internal gear ring fixedly connected to the inner side wall of the housing. An external gear ring is fixedly sleeved on the outer side wall of the inner cylinder. A reversing gear is rotatably arranged between the inner top wall of the outer cylinder and the outer top wall of the inner cylinder and can mesh with the internal gear ring and the external gear ring respectively. The reversing gear is coaxially and fixedly sleeved on the cleaning brush.

[0022] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0023] 1. In the present application, through the arrangement of the first screw rod and the second screw rod, they can cooperate with each other to crush the glutinous rice flour blocks, reducing the time required for drying the glutinous rice flour, improving the drying efficiency of the glutinous rice flour, and also dispersing the glutinous rice flour, facilitating the drying of the glutinous rice flour, being beneficial to improving the drying effect of the glutinous rice flour. At the same time, the rotation of the housing can effectively prevent the glutinous rice flour from accumulating under the housing, ensuring that the material always remains in a dispersed state during the drying process and improving the uniformity of drying.

[0024] 2. Through the arrangement of the cleaning brush, on the one hand, it can clean the inner side wall of the outer cylinder and the outer side wall of the inner cylinder, reducing the amount of residual glutinous rice flour on the outer cylinder and the inner cylinder, reducing waste, preventing the residues from aging due to long-term stay, maintaining the cleanliness and operating efficiency of the equipment, and also reducing the risk of blockage of the feeding hole. On the other hand, it can crush the glutinous rice flour blocks between the first screw rod and the inner side wall of the outer cylinder and between the second screw rod and the outer side wall of the inner cylinder. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of the overall structure of an embodiment of the present application from another angle;

[0027] Figure 3 is a schematic diagram of the internal structure of the outer cylinder in an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of the structure of the driving mechanism in an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of the structure of the first screw rod in an embodiment of the present application;

[0030] Figure 6 is a schematic diagram of the internal structure of the inner cylinder in an embodiment of the present application.

[0031] Description of reference numerals: 1, frame; 11, feed hopper; 2, outer cylinder; 21, housing; 211, first screw rod; 22, first fixing plate; 23, second fixing plate; 3, rotating source; 4, inner cylinder; 41, feed hole; 42, second screw rod; 43, fixing rod; 5, driving mechanism; 51, internal gear ring; 52, external gear ring; 53, reversing gear; 6, material suction mechanism; 61, discharge pipe; 62, induced draft fan; 63, cyclone separator; 7, cleaning brush; 8, support cylinder; 81, baffle; 82, connecting rod; 83, feed inlet; 9, spiral blade. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will combine the Figures 1-6 of the embodiments of the present application to clearly and completely describe the technical solutions of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0033] Referring to Figure 1 , Figure 2 and Figure 3 , a multi-stage drying device for polished glutinous rice flour includes a frame 1, an outer cylinder 2, an inner cylinder 4, a driving mechanism 5, a crushing mechanism and a material suction mechanism 6. The frame 1 is arranged on a horizontal plane, the outer cylinder 2 is horizontally arranged on the frame 1, the outer cylinder 2 is composed of a housing 21 with openings at both ends and a central axis extending in the left-right direction, and two first fixing plates 22 and second fixing plates 23 respectively arranged at both ends of the housing 21. A rotating source 3 and a rotating roller capable of pressing against the housing 21 are arranged on the frame 1. The rotating source 3 can drive the rotating roller in a transmission manner so that the rotating roller drives the housing 21 to rotate. A feed hopper 11 is installed on the first fixing plate 22, and the feed hopper 11 can communicate with the inside of the outer cylinder 2.

[0034] Among them, referring to Figure 2 and Figure 3, the inner cylinder 4 is horizontally rotatably arranged on the frame 1. The left end of the inner cylinder 4 is rotatably connected to the first fixing plate 22, and the right end of the inner cylinder 4 passes through the second fixing plate 23. The inner cylinder 4 is eccentrically arranged inside the outer cylinder 2, and the central axis of the inner cylinder 4 is located below the central axis of the outer cylinder 2. A plurality of feeding holes 41 are evenly formed in the circumferential side wall of the inner cylinder 4 between the first fixing plate 22 and the second fixing plate 23. The feeding holes 41 can allow glutinous rice flour to pass through while blocking glutinous rice flour lumps. The driving mechanism 5 is arranged on the outer shell 21. The driving mechanism 5 can drive the inner cylinder 4 to rotate in a gear transmission manner when the outer shell 21 rotates, and make the inner cylinder 4 rotate in the opposite direction to the outer cylinder 2. The material suction mechanism 6 is arranged on the frame 1. The material suction mechanism 6 is used to suck out the glutinous rice flour in the outer cylinder 2 through the inner cylinder 4. The crushing mechanism is arranged between the outer cylinder 2 and the inner cylinder 4. The crushing mechanism is used to crush the glutinous rice flour lumps falling on the bottom of the outer cylinder 2.

[0035] Refer to Figure 3 and Figure 4 , the driving mechanism 5 includes an internal gear ring 51, an external gear ring 52 and a reversing gear 53. A pair of internal gear rings 51 are provided. The pair of internal gear rings 51 are fixedly connected to the inner circumferential side wall of the outer shell 21 and are respectively located at both ends of the outer shell 21. The internal gear rings 51 and the gears are correspondingly provided with the same number of external gear rings 52. The pair of internal gear rings 51 are fixedly connected to the outer circumferential side wall of the inner cylinder 4 and are respectively fixedly connected to both ends of the inner cylinder 4. Each reversing gear 53 is located between an external gear ring 52 and an internal gear ring 51 and meshes with both of them respectively.

[0036] When the outer shell 21 rotates, the outer shell 21 drives the internal gear ring 51 to rotate. The rotation of the internal gear ring 51 drives the reversing gear 53 to rotate. The rotation of the reversing gear 53 drives the external gear ring 52 and the inner cylinder 4 to rotate. The rotation direction of the inner cylinder 4 is opposite to the rotation direction of the outer shell 21.

[0037] Refer to Figure 3 , Figure 4 and Figure 5 , the crushing mechanism includes a first screw rod 211 and a second screw rod 42. A plurality of first screw rods 211 and a plurality of second screw rods 42 are provided. The plurality of first screw rods 211 are fixedly connected to the inner side wall of the outer shell 21. The plurality of second screw rods 42 are fixedly connected to the outer side wall of the inner cylinder 4. The spiral directions of the first screw rod 211 and the second screw rod 42 are opposite. The first screw rod 211 and the second screw rod 42 can cooperate to crush the glutinous rice flour lumps when rotating to the lower part. Heating sheets are installed on both the first screw rod 211 and the second screw rod 42.

[0038] When the outer shell 21 and the inner cylinder 4 rotate, the outer shell 21 can drive the first screw rod 211 to rotate. The rotation of the inner cylinder 4 can drive the second screw rod 42 to rotate. The first screw rod 211 and the second screw rod 42 can cooperate to crush the glutinous rice flour lumps at the bottom of the outer shell 21 when rotating to the lower part and disperse the glutinous rice flour.

[0039] Refer to Figure 1 and Figure 6 The material suction mechanism 6 includes a discharge pipe 61 and a cyclone separator 63. A support cylinder 8 is installed on the frame 1. The left end of the support cylinder 8 passes through the right side wall of the inner cylinder 4. A feed inlet 83 is formed on the side wall of the support cylinder 8 at the end located inside the inner cylinder 4. The discharge pipe 61 communicates with the right end of the support cylinder 8. The cyclone separator 63 is arranged between the discharge pipes 61 and communicates with the induced draft fan 62. The cyclone separator 63 is a prior art and will not be described in detail.

[0040] When drying the glutinous rice flour, the moisture in the glutinous rice flour forms gas. Under the action of the induced draft fan 62, the glutinous rice flour and the gas can enter the discharge pipe 61 through the inner cylinder 4 and the feed inlet 83. Subsequently, under the action of the cyclone separator 63, the glutinous rice flour and the gas are separated and flow out through the discharge pipe 61.

[0041] When drying the glutinous rice flour, under the action of the material suction mechanism 6, the glutinous rice flour first enters the outer cylinder 2 from the feed hopper 11. The heating sheets on the outer shell 21 and the inner cylinder 4 heat the glutinous rice flour and the air so that the glutinous rice flour is dried. At the same time, the outer shell 21 and the inner cylinder 4 rotate and drive the first spiral rod 211 and the second spiral rod 42 to rotate respectively. When the first spiral rod 211 and the second spiral rod 42 rotate to the lower part, they can break the glutinous rice flour lumps. Subsequently, the small-particle glutinous rice flour enters the inner cylinder 4 through the feed holes 41 under the action of the material suction mechanism 6, and the remaining glutinous rice flour lumps continue to be dried and broken in the outer cylinder 2.

[0042] In this application, through the arrangement of the first spiral rod 211 and the second spiral rod 42, they can cooperate with each other to break the glutinous rice flour lumps and disperse the glutinous rice flour, thereby reducing the drying time of the glutinous rice flour and improving the drying efficiency of the glutinous rice flour.

[0043] Refer to Figure 3 and Figure 4 A multi-stage drying device for water-milled glutinous rice flour further includes a cleaning mechanism. The cleaning mechanism is arranged inside the outer cylinder 2 and is used to clean the side walls of the outer shell 21 and the inner cylinder 4.

[0044] Refer to Figure 3 and Figure 4 The cleaning mechanism includes a cleaning brush 7. The cleaning brush 7 is horizontally arranged between the inner top wall of the outer shell 21 and the outer top wall of the inner cylinder 4. Both ends of the cleaning brush 7 pass through the outer cylinder 2 and are rotatably connected to the frame 1. And a reversing gear 53 is coaxially and fixedly sleeved on the end of the cleaning brush 7. The cleaning brush 7 can abut against the inner side wall of the outer shell 21 and the outer wall of the inner cylinder.

[0045] When the outer shell 21 drives the reversing gear 53 to rotate, the reversing gear 53 can synchronously drive the cleaning brush 7 to rotate. Through the rotation of the cleaning brush 7, on the one hand, the inner side wall of the outer cylinder 2 and the outer side wall of the inner cylinder 4 can be cleaned, which not only reduces the amount of residual glutinous rice flour on the outer cylinder 2 and the inner cylinder 4, reduces waste, prevents the residues from aging due to long-term stay, maintains the cleanliness and operating efficiency of the equipment, but also reduces the risk of blockage of the feed hole 41. On the other hand, the glutinous rice flour lumps between the first screw rod 211 and the inner side wall of the outer cylinder 2 and between the second screw rod 42 and the outer side wall of the inner cylinder 4 can be broken.

[0046] Referring to Figure 3 and Figure 4 A multi-stage drying device for water-milled glutinous rice flour further includes a fixing rod 43. The fixing rod 43 extends in the left-right direction and there are a plurality of them. The plurality of fixing rods 43 are respectively fixedly connected to the inner side wall of the outer shell 21 and the outer side wall of the inner cylinder 4, and heating sheets are installed on the fixing rod 43.

[0047] When the outer shell 21 and the inner cylinder 4 rotate, they can drive the fixing rod 43 to rotate. The rotation of the fixing rod 43 can drive the glutinous rice flour to rise from the bottom upwards, which is convenient for the glutinous rice flour to be quickly dried and is beneficial to improving the drying efficiency of the glutinous rice flour.

[0048] Referring to Figure 6 A multi-stage drying device for water-milled glutinous rice flour further includes a baffle 81 and a spiral sheet 9. The baffle 81 is arranged below the inner cylinder 4, and the baffle 81 is fixedly connected to the support cylinder 8 through a connecting rod 82; the spiral sheet 9 is arranged between the inner cylinder 4 and the support cylinder 8, and the spiral sheet 9 is fixedly connected to the outer side wall of the support cylinder 8, and heating sheets are installed on the spiral sheet 9.

[0049] When the first screw rod 211 and the second screw rod 42 cooperate to break the glutinous rice flour, the setting of the baffle 81 can prevent the glutinous rice flour from directly entering the inner cylinder 4 from below, reducing the risk of undried glutinous rice flour directly entering the inside of the inner cylinder 4 and ensuring the quality of preliminary drying; the setting of the spiral sheet 9 can not only increase the drying area of the glutinous rice flour, but also block the movement of the glutinous rice flour to increase the residence time of the glutinous rice flour in the inner cylinder 4, thereby improving the drying effect of the glutinous rice flour.

[0050] The implementation principle of a multi-stage drying device for water-milled glutinous rice flour in an embodiment of the present application is as follows:

[0051] When drying glutinous rice flour, the rotation source 3 drives the outer shell 21 to rotate. The rotation of the outer shell 21 drives the outer tooth ring 52 to rotate and drives the reversing gear 53 and the inner cylinder 4 to rotate through the way of gear transmission. At the same time, under the action of the induced draft fan 62, the glutinous rice flour enters the outer cylinder 2 from the feed hopper 11. The outer shell 21 and the inner cylinder 4 rotate and drive the first screw rod 211 and the second screw rod 42 to rotate respectively. When the first screw rod 211 and the second screw rod 42 rotate to the lower part, they can cooperate to break the glutinous rice flour blocks. During this process, the heating sheet heats the glutinous rice flour and the air so that the glutinous rice flour is initially dried, and the moisture in the glutinous rice flour will form a gas. Subsequently, the dried glutinous rice flour and the gas enter the inner cylinder 4 through the upper feed hole 41. The glutinous rice flour blocks continue to be broken. Then, the glutinous rice flour entering the inner cylinder 4 is continuously dried through the spiral blade 9. Subsequently, the glutinous rice flour and the gas enter the support cylinder 8. Under the action of the cyclone separator 63, the glutinous rice flour flows out through the discharge port, and the gas is extracted by the induced draft fan 62.

[0052] In addition, it should be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0053] The above is the preferred embodiment of the present application. It should be pointed out that for those of ordinary skill in the art in the technical field, without departing from the principle described in the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A multi-stage drying device for water-milled glutinous rice flour, comprising a frame (1) and a feed hopper (11), characterized in that: A horizontal outer cylinder (2) composed of a housing (21), a first fixed plate (22) and a second fixed plate (23) is arranged on a frame (1). A rotating source (3) for driving the housing (21) to rotate is installed on the frame (1). A feed hopper (11) is communicated with the first fixed plate (22). An inner cylinder (4) is arranged on the frame (1). The left end of the inner cylinder (4) is arranged on the first fixed plate (22) and the right end passes through the second fixed plate (23). The central axis of the inner cylinder (4) is located below the central axis of the housing (21). A plurality of feed holes (41) are evenly formed in the side wall of the inner cylinder (4) between the first fixed plate (22) and the second fixed plate (23). A material suction mechanism (6) is arranged on the frame (1) for sucking the glutinous rice flour in the outer cylinder (2) through the inner cylinder (4); A support cylinder (8) is installed on the frame (1). The left end of the support cylinder (8) passes through the right side wall of the inner cylinder (4). A baffle (81) is arranged below the inner cylinder (4). The baffle (81) is fixedly connected with the support cylinder (8) through a connecting rod (82); A plurality of first spiral rods (211) and second spiral rods (42) are respectively fixedly connected to the inner side wall of the housing (21) and the outer side wall of the inner cylinder (4). When the first spiral rod (211) rotates to the lower part, it can cooperate with the second spiral rod (42) to break the glutinous rice flour blocks. Heating sheets are installed on the first spiral rod (211) and the second spiral rod (42).

2. The multi-stage drying device for polished glutinous rice flour according to claim 1, wherein: The inner cylinder (4) is rotatably arranged on the frame (1), and the inner cylinder (4) is respectively rotatably connected with the first fixed plate (22) and the second fixed plate (23). A driving mechanism (5) is arranged on the housing (21) for driving the inner cylinder (4) to rotate and making the rotation direction of the inner cylinder (4) opposite to that of the outer cylinder (2). The spiral directions of the first spiral rod (211) and the second spiral rod (42) are opposite.

3. The multi-stage drying device for polished glutinous rice flour according to claim 2, wherein: A cleaning brush (7) is rotatably arranged between the inner top wall of the housing (21) and the outer top wall of the inner cylinder (4). Both ends of the cleaning brush (7) pass through the first fixed plate (22) and the second fixed plate (23) respectively and are rotatably connected with the frame (1). The cleaning brush (7) can be in contact with the inner side wall of the housing (21) and the outer side wall of the inner cylinder (4).

4. The multi-stage drying device for polished glutinous rice flour according to claim 3, characterized in that: Fixed rods (43) are fixedly connected to both the inner side wall of the housing (21) and the outer side wall of the inner cylinder (4). Heating sheets are installed on the fixed rods (43).

5. The multi-stage drying device for polished glutinous rice flour according to claim 4, characterized in that: The material suction mechanism (6) includes a discharge pipe (61) communicated with the right end of the support cylinder (8). A cyclone separator (63) communicated with an induced draft fan (62) is arranged between the discharge pipes (61). A feed port (83) is formed in the side wall of the support cylinder (8) at the end located inside the inner cylinder (4).

6. The multi-stage drying device for polished glutinous rice flour according to claim 5, characterized in that: A spiral sheet (9) is arranged between the outer cylinder (2) and the support cylinder (8), and the spiral sheet (9) is fixedly connected to the outer side wall of the support cylinder (8). Heating sheets are arranged on the spiral sheet (9).

7. A multi-stage drying device for polished glutinous rice flour according to claim 3, characterized in that: The driving mechanism (5) includes an internal gear ring (51) fixedly connected to the inner side wall of the housing (21), an external gear ring (52) fixedly sleeved on the outer side wall of the inner cylinder (4), a reversing gear (53) rotatably arranged between the inner top wall of the outer cylinder (2) and the outer top wall of the inner cylinder (4) and capable of meshing with the internal gear ring (51) and the external gear ring (52) respectively, and the reversing gear (53) is coaxially and fixedly sleeved on the cleaning brush (7).

Images