Drying device of low-glycemic-content cooking-free rice production equipment and drying method of low-glycemic-content cooking-free rice production equipment

Abstract

The invention belongs to the field of low-sugar-content cooking-free rice, and particularly relates to a drying device of low-sugar-content cooking-free rice production equipment and a drying method of the low-sugar-content cooking-free rice production equipment, and the drying device comprises a feeding end seat for feeding and a discharging end seat for discharging; the drying mechanism comprises a preheating part, a drying part and a shaping part which are arranged between the feeding end base and the discharging end base in a stacked mode. Preheating, drying and shaping are carried out in each cavity section by section, a turnover mechanism is arranged in each cavity, input rice grains are supported by a tray, the rice grains jump along with the forward and reverse rotation process of the tray, and the problem that the rice grains are attached to the tray and agglomerate is effectively solved; the rice grains are transferred from one cavity to the other cavity by virtue of the dead weight of the rice grains, so that the position switching of the rice grains is convenient; the rice grains are in a dynamic state in the preheating, drying and shaping processes, so that the rice grains are uniformly heated, the rice grains are softened and prevented from cracking in the preheating part, the rice grains are dehydrated and shaped in the drying part, and the rice grains are cooled and prevented from shrinking in the shaping part.

Description

Technical Field

[0001] This invention relates to the field of low-glycemic index, no-cook rice, and specifically to a drying device and drying method for low-glycemic index, no-cook rice production equipment. Background Technology

[0002] The emergence of low-sugar, instant rice aligns with the trend of healthy eating and meets modern consumers' demand for convenient meals. Low-glycemic instant rice production equipment is primarily used to produce this convenient, instant rice, mixing rice with other grains to create a ready-to-eat food with low glycemic index. This equipment mainly consists of a mixing machine, an extruder, and an oven, which can mix, extrude, bake, and package the raw materials into finished products. Rice is mixed with other grains in a specific ratio, water is added and stirred, and the mixture is extruded into shape using an extruder. Adjusting the molds changes the product's shape.

[0003] The produced instant rice grains need to be dried, partly to remove moisture and partly to shape the grains. Drying rice grains in a piled-up state can cause some grains to stick together, and the piled-up state is not conducive to even heating and drying. Furthermore, the rice grains may crack due to friction or hardening at high temperatures during the drying process, affecting the final shaping effect. Summary of the Invention

[0004] (a) Purpose of the invention To address the technical problems existing in the background art, this invention proposes a drying device for low-glycemic, non-cooking rice production equipment, which features segmented drying and turning of rice grains to improve the drying and shaping effect.

[0005] (II) Technical Solution To solve the above-mentioned technical problems, the present invention provides a drying device for a low-glycemic, non-cooking rice production equipment, including a feeding end seat for feeding and a discharging end seat for discharging. The drying mechanism includes a preheating section, a drying section, and a shaping section stacked between the feeding end seat and the discharging end seat, with each cavity cooperating to dry the rice grains in stages; The flipping mechanism includes a motor and a shaft frame. The output end of the motor is equipped with a rotating shaft that passes through the shaft frame. A bushing is fitted on the outer wall of the rotating shaft. A tray is installed on the bushing. A guide member that attaches to the cavity is formed on the tray. The heating mechanism includes a heater, the output end of which is equipped with a heating pipe, and the other end of which is equipped with a ventilated grille facing each cavity. The ventilation system includes an exhaust fan, the exhaust end of which is equipped with an exhaust main pipe, which is connected to each cavity through exhaust branch pipes.

[0006] Preferably, the inner cavity of the preheating section is an open circular structure, and the guide connected to the outer edge of the tray is an arc-shaped structure adapted to it.

[0007] Preferably, the combination of the tray and the guide is used to support rice grains, and the tray is controlled by the motor to rotate forward and backward within the cavity.

[0008] Preferably, the upper and lower parts of the cavities of the preheating section, the drying section, and the shaping section are all through structures, and the tray divides the cavity into upper and lower sections.

[0009] Preferably, the ventilation grille and the air intake branch pipe are symmetrically arranged, and hot air is transmitted to the air intake branch pipe along the ventilation grille.

[0010] Preferably, the preheating section has one built-in heating unit, and the drying section and the shaping section have two built-in heating units.

[0011] Preferably, when the three guide members are rotated 90 degrees simultaneously, the feed end seat and the discharge end seat are combined to form a through-type transmission structure.

[0012] Preferably, the vibration mechanism includes a vibration motor disposed within the tray, the output end of the vibration motor being equipped with a vibration unit, and the vibration unit being connected to the upper and lower end faces of the tray via a connecting rod.

[0013] Preferably, the upper and lower end faces of the tray are formed with raised heat-conducting elements, which include protrusions and heating elements installed in the inner protrusions.

[0014] This invention also provides a drying method for a drying device in a low-glycemic, non-cooking rice production equipment, comprising the following steps: Step 1: The rice grains produced by the low-glycemic instant rice production equipment are conveyed to the preheating section through the feed end seat; Step 2: The heating and ventilation mechanisms work together to preheat the rice grains at a temperature of 50-55°C. The motor drives the tray and the guide to rotate, turning over the stacked rice grains. After preheating, the tray and the guide rotate 90 degrees to transport the preheated rice grains to the drying section. Step 3: The heating and ventilation mechanisms work together to preheat and dry the rice grains. The drying process is the same as in Step 2, except that the drying temperature is 60-65℃. After drying, the dried rice grains are transported to the shaping section. Step 4: The heating and ventilation mechanisms work together to shape the dried rice grains. The shaping process is the same as in Step 3, except that the shaping temperature is 45-50℃. After shaping, the shaped rice grains are taken out through the discharge end seat.

[0015] The above-described technical solution of the present invention has the following beneficial technical effects: 1. The preheating section, drying section and shaping section are designed in layers. Preheating, drying and shaping are carried out in sections in each cavity. Each cavity is equipped with a flipping mechanism. The rice grains are supported by the tray and jump as the tray rotates in both directions, which effectively solves the problem of rice grains adhering to the tray and clumping. 2. After preheating or drying in one chamber, the transfer of rice grains from one chamber to another is achieved by the weight of the rice grains themselves, which facilitates the switching of the rice grains' positions. 3. The rice grains are in a dynamic state during the preheating, drying and shaping processes, which ensures that the rice grains are heated evenly. The preheating section softens the rice grains to prevent cracking, the drying section dehydrates and protects the shape of the rice grains, and the shaping section cools the rice grains to prevent shrinkage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the heating mechanism structure of the present invention; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the flipping mechanism structure of the present invention; Figure 5 This is a schematic diagram of the vibration mechanism structure of the present invention; Figure 6 This is a schematic diagram of the planar structure of the present invention.

[0017] Figure label: 1. Feeding end seat; 21. Preheating section; 22. Drying section; 23. Shaping section; 31. Motor; 32. Shaft bracket; 33. Rotating shaft; 34. Bushing; 35. Tray; 36. Guide component; 41. Heater; 42. Heating pipe; 43. Ventilation grille; 51. Exhaust fan; 52. Exhaust main pipe; 53. Exhaust branch pipe; 6. Discharge end seat; 71. Vibrating motor; 72. Vibrating part; 73. Connecting rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0019] like Figure 1-6 As shown, the drying device of the low sugar content rice production equipment proposed in this invention includes a feeding end seat 1 for feeding and a discharging end seat 6 for discharging. The drying mechanism includes a preheating section 21, a drying section 22, and a shaping section 23 stacked between the infeed end seat 1 and the discharge end seat 6, with each cavity working together to dry the rice grains in stages. The flipping mechanism includes a motor 31 and a shaft frame 32. The output end of the motor 31 is equipped with a rotating shaft 33 that passes through the shaft frame 32. The outer wall of the rotating shaft 33 is fitted with a shaft sleeve 34. A tray 35 is installed on the shaft sleeve 34. A guide member 36 that attaches to the cavity is formed on the tray 35. The heating mechanism includes a heater 41, a heating pipe 42 is installed at the output end of the heater 41, and a ventilation grille 43 facing each cavity is installed at the other end of the heating pipe 42. The ventilation system includes an exhaust fan 51, and an exhaust pipe 52 is installed at the exhaust end of the exhaust fan 51. The exhaust pipe 52 is connected to each cavity through exhaust branch pipes 53.

[0020] It should be noted that the inner cavity of the preheating section 21 is an open circular structure, with the upper opening for feeding and the lower opening for discharging. The guide 36 connected to the outer edge of the tray 35 is an arc-shaped structure that is adapted to it. When the tray 35 rotates, the guide 36 at its end rotates along the cavity of the circular structure. The guide 36 is used on the one hand to assist in sealing the upper and lower parts of the cavity, and on the other hand to maintain the smoothness of the rotation process of the tray 35.

[0021] It should be added that: the combination of tray 35 and guide 36 is used to support rice grains. The tray 35 is controlled by the motor 31 to rotate forward and backward in the cavity. The guide 36 has an arc-shaped structure. The combination of tray 35 and guide 36 can fully support rice grains. During rotation, it prevents rice grains from splashing and adhering to the circular inner wall of the cavity, and ensures that rice grains are alternately sprinkled during forward and reverse rotation, so as to achieve dynamic preheating, drying and shaping of rice grains.

[0022] In this embodiment, the preheating section 21, the drying section 22, and the shaping section 23 are designed in layers. Preheating, drying, and shaping are carried out in sections within each cavity, and each cavity is equipped with a flipping mechanism. The input rice grains are supported by the tray 35. The motor 31 drives the rotating shaft 33 to rotate, which in turn drives the tray 35 connected by the bushing 34 to rotate. The rice grains jump as the tray 35 rotates in both directions, effectively solving the problem of rice grains adhering to the tray 35 and clumping. After preheating or drying in one cavity is completed, the rotating shaft 33 is driven by the motor 31 to rotate, which drives the tray 35 connected by the bushing 34 to be in a vertical position, so as to transfer the rice grains from one cavity to another. The transfer is carried out by the weight of the rice grains, which facilitates the switching of the rice grains' positions. The rice grains are in a dynamic state during preheating, drying, and shaping processes, ensuring uniform heating. The hot air output from heater 41 is transmitted to the ventilation grille 43 through heating pipe 42. The hot air acts on the rice grains within the cavity. The water vapor generated during heat treatment is collected through the ventilation mechanism. The exhaust fan 51 provides the power for the exhaust main pipe 52 and exhaust branch pipe 53 to draw air, expelling the water vapor from the cavity and improving the processing effect of the rice grains. After completing each step of the process, the rice grains are shaped. The rice grains are softened and crack-prevented in the preheating section 21, dehydrated and shaped in the drying section 22, and cooled and prevented from shrinking in the shaping section 23.

[0023] It is understandable that the same flipping mechanism is provided in the preheating section 21, the drying section 22 and the shaping section 23. The flipping mechanism has the same structure and function. The upper and lower parts of the cavities of the preheating section 21, the drying section 22 and the shaping section 23 are all through structures, which facilitates the transfer of rice grains in the segmented drying process. The rice grains switch the air intake cavity under the action of gravity. The tray 35 divides the cavity into upper and lower sections. The section of the preheating section 21 is half of the section of the drying section 22 and the shaping section 23.

[0024] To facilitate the discharge of hot air and moisture, the ventilation grille 43 and the air intake branch pipe 53 are symmetrically arranged. Hot air is transmitted along the ventilation grille 43 to the air intake branch pipe 53. The hot air is transmitted between the symmetrical ventilation grille 43 and the air intake branch pipe 53 to form convective hot air to preheat, dry or shape the rice grains, thus solving the problem of uneven drying of rice grains.

[0025] It is understandable that, since the preheating section 21, drying section 22 and shaping section 23 have different temperature requirements, it is difficult to meet the requirements by setting a single heating unit. Therefore, one heating unit is built into the preheating section 21, and two heating units are built into the drying section 22 and shaping section 23. By using each heating unit to control the temperature of each cavity, different heat treatment requirements can be met.

[0026] It is understandable that when the three guides 36 rotate 90 degrees at the same time, the feed end seat 1 and the discharge end seat 6 are combined into a through-transmission structure, that is, the trays 35 in each cavity can be rotated. When rotating 90 degrees, internal cleaning can be carried out. On the other hand, during the preheating, drying and shaping process, the rice grains are transferred between adjacent cavities through the synchronous rotation of the trays 35 and the guides 36.

[0027] In one embodiment, the vibration mechanism includes a vibration motor 71 disposed in a tray 35, and a vibration part 72 is installed at the output end of the vibration motor 71. The vibration part 72 is connected to the upper and lower end faces of the tray 35 via a connecting rod 73.

[0028] Since the rice grains adhere to the surface of the tray 35 under the action of gravity, a vibration mechanism is set up. The vibration motor 71 drives the vibration part 72 at the output end to vibrate, which drives the connecting rod 73 to transmit the vibration to the tray 35. The rice grains continuously detach from the tray 35 under vibration, thus solving the problem of grain adhesion.

[0029] In another embodiment, the upper and lower end faces of the tray 35 are formed with protruding heat-conducting elements, which include protrusions and heating elements installed in the inner protrusions. In order to dry rice grains in large quantities, the heating elements installed in the protrusions are provided. Heat is transferred to the surface through the protrusions to assist in heating the rice grains on the tray 35, which can dry rice grains in large quantities and shorten the drying time.

[0030] This invention also provides a drying method for a drying device in a low-glycemic, non-cooking rice production equipment, comprising the following steps: Step 1: The rice grains produced by the low sugar content instant rice production equipment are conveyed from the feed end seat 1 to the preheating section 21; Step 2: The heating and ventilation mechanisms work together to preheat the rice grains at a temperature of 50-55℃. The motor 31 drives the tray 35 and guide 36 to rotate, turning over the stacked rice grains. After preheating, the tray 35 and guide 36 rotate 90 degrees to transport the preheated rice grains to the drying section 22. The preheating temperature is 50-55℃, which is lower than the starch gelatinization temperature. This softens the surface of the rice grains without causing stickiness. After preheating, the tax content will be reduced to 28-30%, which is a pretreatment for drying. Step 3: The heating and ventilation systems work together to preheat and dry the rice grains. The drying process is the same as in Step 2, except that the drying temperature is 60-65℃. After drying, the dried rice grains are transported to the shaping section 23. The moisture diffusion is accelerated by using a temperature higher than the starch gelatinization initiation temperature and lower than the protein denaturation threshold to retain nutrients. The moisture inside the rice grain diffuses rapidly, which is then dried for shaping. Step 4: The heating and ventilation mechanisms work together to shape the dried rice grains. The shaping process is the same as in Step 3, except that the shaping temperature is 45-50℃. After shaping, the shaped rice grains are removed through the discharge end seat 6. The rice grains are shaped by cooling, and the shaping process continues while the rice grains are kept warm to maintain their shape. Once the residual moisture is removed, the rice can be discharged.

[0031] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A drying device for a low-glycemic index, no-cook rice production equipment, characterized in that, It includes a feed end seat (1) for feeding and a discharge end seat (6) for discharging. The drying mechanism includes a preheating section (21), a drying section (22) and a shaping section (23) stacked between the feed end seat (1) and the discharge end seat (6), with each cavity cooperating to dry the rice grains in stages; The flipping mechanism includes a motor (31) and a shaft frame (32). The output end of the motor (31) is equipped with a rotating shaft (33) that passes through the shaft frame (32). The outer wall of the rotating shaft (33) is fitted with a bushing (34). A tray (35) is installed on the bushing (34). A guide (36) for attaching to the cavity is formed on the tray (35). The heating mechanism includes a heater (41), the output end of which is equipped with a heating pipe (42), and the other end of which is equipped with a ventilation grille (43) facing each cavity. The ventilation system includes an exhaust fan (51), the exhaust end of which is equipped with an exhaust pipe (52), and the exhaust pipe (52) is connected to each cavity through an exhaust branch pipe (53).

2. The drying device of a low-glycemic index, no-cook rice production equipment according to claim 1, characterized in that, The inner cavity of the preheating section (21) is an open circular structure, and the guide (36) connected to the outer edge of the tray (35) is an arc-shaped structure adapted to it.

3. The drying device for a low-glycemic index, no-cook rice production equipment according to claim 1, characterized in that, The combination of the tray (35) and the guide (36) is used to support rice grains. The tray (35) is controlled by the motor (31) to rotate forward and backward in the cavity.

4. The drying device of a low-glycemic index, no-cook rice production equipment according to claim 1, characterized in that, The upper and lower parts of the cavities of the preheating section (21), the drying section (22) and the shaping section (23) are all through structures, and the tray (35) divides the cavity into upper and lower sections.

5. The drying device for a low-glycemic index, no-cook rice production equipment according to claim 1, characterized in that, The ventilation grille (43) and the air intake branch pipe (53) are symmetrically arranged, and hot air is transmitted to the air intake branch pipe (53) along the ventilation grille (43).

6. The drying device for a low-glycemic index, no-cook rice production equipment according to claim 1, characterized in that, The preheating section (21) has a built-in heating unit, and the drying section (22) and the shaping section (23) have built-in two heating units.

7. The drying device for a low-glycemic index, no-cook rice production equipment according to claim 1, characterized in that, When the three guide members (36) rotate 90 degrees at the same time, the feed end seat (1) and the discharge end seat (6) are combined to form a through transmission structure.

8. The drying device for a low-glycemic index, no-cook rice production equipment according to claim 1, characterized in that, The vibration mechanism includes a vibration motor (71) disposed in the tray (35), and a vibration part (72) is installed at the output end of the vibration motor (71). The vibration part (72) is connected to the upper and lower end faces of the tray (35) through a connecting rod (73).

9. The drying device for a low-glycemic index, no-cook rice production equipment according to claim 1, characterized in that, The upper and lower end faces of the tray (35) are formed with protruding heat-conducting elements, which include protruding pillars and heating elements installed in the inner protruding pillars.

10. A drying method for a drying apparatus in a low-glycemic index, non-cooking rice production equipment according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: The rice grains produced by the low sugar content rice production equipment are conveyed from the feed end seat (1) to the preheating section (21). Step 2: The heating and ventilation mechanisms work together to preheat the rice grains at a temperature of 50-55°C. The motor (31) drives the tray (35) and the guide (36) to rotate, turning over the stacked rice grains. After preheating, the tray (35) and the guide (36) rotate 90 degrees to transport the preheated rice grains to the drying section (22). Step 3: The heating and ventilation mechanisms work together to preheat and dry the rice grains. The drying process is the same as in Step 2, except that the drying temperature is 60-65℃. After drying, the dried rice grains are transported to the shaping section (23). Step 4: The heating and ventilation mechanisms work together to shape the dried rice grains. The shaping process is the same as in Step 3, except that the shaping temperature is 45-50℃. After shaping, the shaped rice grains are taken out through the discharge end seat (6).

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