Efficient drying device for rice production and processing

By designing a rice drying device including a support plate, a drying cylinder, a turntable and a hot gas supply component, the uneven heat distribution problem caused by insufficient contact between hot air and rice is solved, and the rapid, uniform drying and high-efficiency energy consumption utilization of rice are achieved.

CN223295165UActive Publication Date: 2025-09-02HUBEI KANGHONG GRAIN & OIL FOOD CO LTD
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Patent Information

Application Number
CN202422410693.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-08
Publication Date
2025-09-02
Estimated Expiration
2034-10-08

AI Technical Summary

Technical Problem

The existing rice hot air drying equipment has insufficient contact with the rice, resulting in uneven heat distribution and lack of an effective turning mechanism, which leads to low drying efficiency and prone to agglomeration.

Method used

An efficient drying device including a base, a support plate, a drying cylinder, a turntable member and a hot gas supply assembly is designed. The drying cylinder is driven to rotate through the drive member, and the turningtable member is combined with the turntable member to turn the rice, and the hot gas supply assembly is used to provide high temperature hot gas to achieve uniform drying of the rice.

Benefits of technology

The rapid and even drying of rice is achieved, the drying efficiency is improved, energy consumption is reduced, and the rice is agglomerated, the heat energy is fully utilized, and the heat energy loss and waste are reduced.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an efficient drying device for rice production and processing, which comprises a base and two supporting discs oppositely arranged on the base, a drying cylinder is arranged in each supporting disc, a drying cavity for accommodating rice is formed in each drying cylinder, a turning part located in the drying cavity is arranged between the two supporting discs, and the turning parts are arranged in the drying cavity. A driving part is arranged on the base, the driving part is connected with the drying cylinder and used for driving the drying cylinder to rotate, a hot air supply assembly is arranged on the supporting disc on one side and used for feeding hot air into the drying cavity, and an exhaust pipe is arranged on the supporting disc on the other side and used for exhausting the hot air into the drying cavity. According to the rice drying device, through high-temperature hot air provided by the hot air supply assembly, stirring and mixing of the stirring piece and control over rotating movement of the drying cylinder through the driving piece, rapid and uniform drying of rice is achieved, and the drying efficiency is remarkably improved.
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Description

Technical Field

[0001] The present application relates to the technical field of grain processing, and in particular to a high-efficiency drying device for rice production and processing. Background Art

[0002] In the field of rice production and processing, rice drying is a crucial link, which is directly related to the storage quality, nutritional value and subsequent processing efficiency of rice.

[0003] Currently, most rice drying methods use hot air drying equipment. However, while existing hot air drying equipment can improve drying efficiency to a certain extent, it often suffers from low thermal efficiency and high energy consumption. These devices typically dry the rice by directly heating air and blowing it into the rice pile. However, due to insufficient contact between the hot air and the rice and the complex flow path of the hot air in the rice pile, the heat distribution is uneven, resulting in some rice being over-dried and others being under-dried. In addition, traditional equipment lacks an effective turning mechanism, which makes the rice prone to clumping during the drying process, further reducing the drying efficiency and effectiveness.

[0004] In view of the above problems, a high-efficiency drying device for rice production and processing is now designed. Utility Model Content

[0005] The embodiment of the present application provides an efficient drying device for rice production and processing to solve the problem of uneven heat distribution caused by insufficient contact between the hot air and the rice, which is generally solved by the existing hot air drying equipment for rice in the related art, that is, the hot air is directly heated and blown into the rice pile for drying.

[0006] In a first aspect, a high-efficiency drying device for rice production and processing is provided, comprising:

[0007] A base and two supporting plates relatively arranged on the base, a drying cylinder is arranged inside the supporting plate, and a drying chamber for accommodating rice is arranged inside the drying cylinder, a flipping member located inside the drying chamber is arranged between the two supporting plates, a driving member is arranged on the base, and the driving member and the drying cylinder are used to drive the drying cylinder to rotate, a hot air supply component is arranged on one side of the supporting plate, and the hot air supply component is used to send hot air into the drying chamber, and an exhaust pipe is arranged on the other side of the supporting plate.

[0008] In some embodiments, the support plate is provided with grooves for accommodating a drying cylinder, the drying cylinder is inserted between two grooves, and the grooves are communicated with the drying chamber;

[0009] A discharge valve is provided at the bottom of the support plate on one side, and a feeding port is provided on the support plate on the other side. The discharge valve and the feeding port are respectively communicated with the corresponding grooves.

[0010] In some embodiments, the flip member includes a fixed rod and a plurality of flip plates, wherein both ends of the fixed rod are respectively arranged in the grooves of the two support plates, and the plurality of flip plates are arranged in an annular shape on the fixed rod;

[0011] The flipping member further comprises a plurality of toggle rods arranged in an annular shape on the side wall of the drying chamber, wherein one end of the toggle rod away from the drying chamber is bent toward the center of the drying cylinder.

[0012] In some embodiments, the driving member includes:

[0013] a first bracket disposed on the base;

[0014] A drive motor and a reducer are arranged on the first bracket;

[0015] An annular rack provided on the drying cylinder;

[0016] A gear disposed at the output end of the reducer;

[0017] The output shaft of the driving motor is connected to the input shaft of the reducer, and the gear and the annular rack are meshed with each other.

[0018] In some embodiments, the hot air supply assembly includes a pump body and a heating tank, the exhaust port of the pump body is connected to the heating tank, a number of electric heating wires are arranged inside the heating tank, the other end of the heating tank is connected to a supply pipe, and the supply pipe is connected to a groove on a support plate on one side.

[0019] In some embodiments, a material guide trough is provided on the base, and the material guide trough is located below the discharge valve.

[0020] In some embodiments, the device further comprises two sets of support mechanisms, wherein the two sets of support mechanisms are disposed opposite to each other on the base;

[0021] The supporting mechanism includes: two second brackets arranged opposite to each other on both sides of the base, two bearing seats arranged opposite to each other on the second brackets, a rotating shaft rotatably arranged between two adjacent bearing seats, a roller arranged on the rotating shaft, a metal ring arranged on the drying cylinder, and a groove adapted to the roller opened on the metal ring.

[0022] An embodiment of the present application provides a high-efficiency drying device for rice production and processing. Through the high-temperature hot air provided by the hot air supply component, the turning and mixing of the turning part, and the driving part controlling the rotational movement of the drying cylinder, the rice is dried quickly and evenly, thereby significantly improving the drying efficiency.

[0023] Hot air circulates in the drying chamber, reducing heat loss and waste. At the same time, the design of the turning element and rotary drying also promotes the full utilization of heat energy and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 Schematic diagram of the three-dimensional structure provided in the embodiment of this application Figure 1 ;

[0026] Figure 2 Schematic diagram of the three-dimensional structure provided in the embodiment of this application Figure 2 ;

[0027] Figure 3 A schematic diagram of the three-dimensional structure of the support mechanism and the drying cylinder connection structure provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the three-dimensional structure of the connection structure between the driving member and the drying cylinder provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the three-dimensional structure of the hot air supply assembly provided in an embodiment of the present application;

[0030] Figure 6 A left side sectional view of the connection structure between the drying cylinder and the flipping member provided in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of the three-dimensional structure of a drying cylinder provided in an embodiment of the present application;

[0032] Figure 8 A three-dimensional schematic diagram of the connection structure between a side support plate and a discharge valve provided in an embodiment of the present application.

[0033] In the figure: 1. base; 2. support plate; 21. groove; 3. drying cylinder; 4. drying chamber; 5. flip part; 51. fixing rod; 52. flip plate; 53. toggle rod; 6. driving part; 61. first bracket; 62. driving motor; 63. reducer; 64. ring rack; 65. gear; 7. hot air supply assembly; 71. pump body; 72. heating tank; 73. electric heating wire; 74. supply pipe; 8. exhaust pipe; 9. discharge valve; 10. feeding port; 11. guide trough; 12. supporting mechanism; 121. second bracket; 122. bearing seat; 123. rotating shaft; 124. roller; 125. metal ring. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] An embodiment of the present application provides an efficient drying device for rice production and processing, which can solve the problem of uneven heat distribution caused by insufficient contact between the hot air and the rice, which is generally solved by the existing hot air drying equipment for rice in the related art, that is, the hot air is directly heated and blown into the rice pile for drying.

[0036] See also Figure 1-Figure 3 A high-efficiency drying device for rice production and processing includes: a base 1, and two supporting plates 2 arranged relatively on the base 1, a drying cylinder 3 is arranged inside the supporting plate 2, and a drying chamber 4 for accommodating rice is arranged inside the drying cylinder 3. A flipping member 5 located inside the drying chamber 4 is arranged between the two supporting plates 2, and a driving member 6 is arranged on the base 1. The driving member 6 and the drying cylinder 3 are used to drive the drying cylinder 3 to rotate. A hot air supply component 7 is arranged on one side of the supporting plate 2, and the hot air supply component 7 is used to send hot air into the drying chamber 4. An exhaust pipe 8 is arranged on the other side of the supporting plate 2. A filter is arranged inside the exhaust pipe 8.

[0037] like Figure 7 As shown, the drying cylinder 3 is cylindrical, hollow inside, and open at both ends.

[0038] The rice is fed into the drying chamber 4 in the drying drum 3 through a feeding port 10 provided on the support plate 2. The position of the feeding port 10 ensures that the rice can enter the drying chamber smoothly and avoids direct contact with the hot air supply assembly 7 or the exhaust pipe 8.

[0039] Hot air supply assembly 7 delivers external hot air into drying chamber 4, heating and drying the rice. Meanwhile, turning element 5 continuously turns the rice during the drying process, ensuring even distribution and sufficient turning of the rice within the drying chamber, effectively preventing rice clumping and uneven drying. Simultaneously, driving element 6 slowly rotates drying drum 3. This rotational motion further promotes full contact and mixing between the rice and the hot air, improving drying efficiency.

[0040] The moisture and waste gas generated during the drying process are discharged outside the device through the exhaust pipe 8 on the other side.

[0041] The high-temperature hot air provided by the hot air supply component 7, the turning and mixing of the turning member 5, and the rotation of the drying cylinder 3 controlled by the driving member 6 achieve rapid and uniform drying of the rice, significantly improving the drying efficiency.

[0042] The hot air forms a circulation flow in the drying chamber 4, reducing the loss and waste of heat energy. At the same time, the design of the turning member 5 and the rotary drying also promotes the full utilization of heat energy and reduces energy consumption.

[0043] The moisture and waste gas generated during the drying process are discharged through the exhaust pipe 8, which avoids the diffusion of dust and harmful gases, and the rice is isolated by the filter screen inside the exhaust pipe 8.

[0044] It should be noted that if Figure 1 and Figure 8 As shown, the support plate 2 is provided with a groove 21 for accommodating the drying cylinder 3. The drying cylinder 3 is inserted between the two grooves 21, and the groove 21 is connected to the drying chamber 4; a discharge valve 9 is provided at the bottom of the support plate 2 on one side, and a feeding port 10 is provided on the support plate 2 on the other side. The discharge valve 9 and the feeding port 10 are respectively connected to the corresponding grooves 21. The feeding port 10 is located above the exhaust pipe 8

[0045] The grooves 21 formed in the support plate 2 not only securely hold the drying drum 3, ensuring its stability during rotation and tumbling, but also provide direct communication with the drying chamber 4, allowing hot air to flow smoothly from the hot air supply assembly 7 through the grooves 21 of the support plate 2 into the drying chamber 4 of the drying drum 3, effectively drying the rice. Furthermore, the grooves 21 provide a convenient passage for feeding and discharging the rice.

[0046] A discharge valve 9 is provided at the bottom of the support plate 2 on one side. When the paddy is dried to a desired degree, the discharge valve 9 can be opened to allow the dried paddy to be discharged from the drying chamber 4 through the groove 21.

[0047] A feeding port 10 is provided on the other side of the support plate 2. This placement, located above the exhaust pipe 8, facilitates the feeding of rice while preventing hot air from escaping directly from the feeding port, ensuring proper heat circulation and drying efficiency within the drying chamber 4. The rice enters the groove 21 through the feeding port 10 and ultimately falls into the drying chamber 4.

[0048] In one embodiment, Figure 1 and Figure 6As shown, the flip member 5 includes a fixed rod 51 and a plurality of flip plates 52, the two ends of the fixed rod 51 are respectively arranged inside the grooves 21 of the two support plates 2, and the plurality of flip plates 52 are arranged in a ring shape on the fixed rod 51; the flip member 5 also includes a plurality of toggle rods 53 arranged in a ring shape on the side wall of the drying chamber 4, and the end of the toggle rod 53 away from the drying chamber 4 is bent toward the center of the drying cylinder 3.

[0049] The fixing rod 51 serves as the skeleton of the turning member 5, and its two ends are firmly fixed in the grooves 21 of the two support plates 2, ensuring that the turning member 5 can remain stable during the drying process and will not deviate or shake due to the weight of the rice or the rotational force.

[0050] When the turning plate 52 rotates in the drying drum 3, it remains stable together with the fixed rod 51, and the friction and impact force on its surface break up and turn over the accumulated rice. In this way, the rice can be more fully exposed to the heat, thereby achieving more efficient drying.

[0051] In order to further enhance the turning effect, one end of the toggle rod 53 is fixed to the side wall of the drying chamber 4, and the other end is bent toward the center of the drying cylinder 3. When the drying cylinder 3 rotates, the bent end of the toggle rod 53 rotates therewith and contacts the rice.

[0052] The curved design of the toggle rods 53 creates a thrust toward the center of the circle when they contact the rice. This thrust not only helps to further break up and turn the rice, but also promotes its circulation within the drying chamber 4. This allows the rice to be more fully exposed to the hot air, resulting in more uniform and efficient drying.

[0053] In one embodiment, Figure 1 and Figure 3 As shown, the driving member 6 includes a first bracket 61 arranged on the base 1; a driving motor 62 and a reducer 63 arranged on the first bracket 61; an annular rack 64 arranged on the drying cylinder 3; and a gear 65 arranged at the output end of the reducer 63; the output shaft of the driving motor 62 is connected to the input shaft of the reducer 63, and the gear 65 and the annular rack 64 are engaged with each other.

[0054] The first bracket 61 serves as a supporting structure for the driving member 6 and is firmly disposed on the base 1 .

[0055] The driving motor 62 is the power source of the driving member 6, and the reducer 63 plays the role of reducing the rotation speed and increasing the torque, ensuring that the drying cylinder 3 can obtain sufficient driving force during the rotation process while maintaining a stable rotation speed.

[0056] The annular rack 64 is provided on the outer surface of the drying cylinder 3 and meshes with the gear 65 to achieve power transmission. The design of the annular rack 64 enables the drying cylinder 3 to rotate continuously and stably around its axis.

[0057] When the drive motor 62 is started, it generates power through rotation. The power generated by the drive motor 62 is reduced in speed and torque is increased by the reducer 63. The reducer 63 then drives the gear 65 to rotate. The gear 65 meshes with the annular rack 64. The gear 65 drives the annular rack 64 to rotate, thereby driving the drying drum 3 to rotate. This gear-and-rack transmission method has the advantages of simple structure, high transmission efficiency, and reliable operation.

[0058] like Figure 1 and Figure 5 As shown, the hot air supply assembly 7 in this embodiment includes a pump body 71 and a heating tank 72. The exhaust port of the pump body 71 is connected to the heating tank 72. Several electric heating wires 73 are provided inside the heating tank 72. The other end of the heating tank 72 is connected to a supply pipe 74, which is connected to the groove 21 on one side of the support plate 2. A filter is provided at the connection between the supply pipe 74 and the support plate 2.

[0059] The pump body 71 is the starting point of the hot air supply component 7, which is responsible for sucking in external air, pressurizing it, and sending it into the heating tank 72. Several electric heating wires 73 are arranged inside the heating tank 72. When the electric heating wires 73 are energized, a large amount of heat energy will be generated to heat the air in the heating tank 72 to a high temperature state. The supply pipe 74 transports the high-temperature hot air in the heating tank 72 to the drying chamber 4.

[0060] The heating wires 73 are heating elements within the heating tank 72. Their number and layout should be designed appropriately based on the actual needs of the drying device. When energized, the heating wires 73 generate a high temperature, heating the surrounding air to the desired drying temperature. By adjusting the power and heating time of the heating wires 73, the drying temperature can be precisely controlled.

[0061] The filter screen at the connection between the supply pipe 74 and the support plate 2 can prevent rice from flowing into the supply pipe 74 .

[0062] In this embodiment, the air inlet of the pump body is provided with a second filter screen, the main function of which is to filter out impurities and particulate matter in the air to prevent them from entering the drying chamber 4 with the hot air and affecting the drying quality of the rice.

[0063] The hot air supply component 7 realizes a stable and continuous supply of high-temperature hot air required in the rice drying process.

[0064] It is understandable that a material guide trough 11 is provided on the base 1 , and the material guide trough 11 is located below the discharge valve 9 .

[0065] When the discharge valve 9 is opened, the dried rice will be discharged from the drying chamber 4 through the groove 21 and the discharge valve 9. At this time, the guide trough 11 can guide the rice to flow along a specific path, preventing the rice from scattering or piling up on the base 1 during discharge, thereby keeping the working environment clean and tidy.

[0066] The design of the guide chute 11 enables the discharged paddy to be collected in a certain area, which is convenient for subsequent processing and transportation. For example, a collecting bag or a collecting box can be set at the end of the guide chute 11 to realize the rapid collection and storage of the paddy after the drying.

[0067] As a preferred embodiment, Figure 4 As shown, the support mechanism 12 includes: two second brackets 121 arranged on both sides of the base 1, two bearing seats 122 are arranged on the second brackets 121, a rotating shaft 123 is rotatably arranged between two adjacent bearing seats 122, a roller 124 is arranged on the rotating shaft 123, and a metal ring 125 is provided on the drying cylinder 3, and a groove adapted to the roller 124 is opened on the metal ring 125.

[0068] The bearing seat 122 provides a precise support point for the rotation of the rotating shaft 123. A bearing is installed inside the bearing seat 122 to reduce friction and wear of the rotating shaft 123 during rotation.

[0069] The rotating shaft 123 passes through two adjacent bearing seats 122 and is rotatably connected thereto. The rollers 124 are arranged on the rotating shaft 123 and are in contact with the metal rings 125 on the drying cylinder 3 to provide rolling support for the rotation of the drying cylinder 3 .

[0070] The metal ring 125 is provided with a groove adapted to the roller 124. When the drying cylinder 3 rotates, the metal ring 125 rolls with the roller 124, thereby achieving stable rotation of the drying cylinder 3.

[0071] During the rice drying process, as the drying drum 3 rotates, rollers 124 roll along the grooves of metal rings 125, providing rolling support for the rotation of the drying drum 3. Due to the small contact area and low rolling friction between rollers 124 and metal rings 125, friction loss and energy consumption during the rotation of the drying drum 3 are significantly reduced. Furthermore, the robust design of the support mechanism 12 ensures the stability and safety of the drying drum 3 during rotation.

[0072] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0073] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0074] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A high-efficiency drying device for rice production and processing, characterized in that: include: A base (1) and two supporting plates (2) arranged relative to the base (1), wherein a drying cylinder (3) is arranged inside the supporting plate (2), and a drying chamber (4) for accommodating rice is provided inside the drying cylinder (3), and a turning member (5) located inside the drying chamber (4) is arranged between the two supporting plates (2), and a driving member (6) is arranged on the base (1), and the driving member (6) and the drying cylinder (3) are used to drive the drying cylinder (3) to rotate, a hot air supply component (7) is arranged on one side of the supporting plate (2), and the hot air supply component (7) is used to send hot air into the drying chamber (4), and an exhaust pipe (8) is arranged on the other side of the supporting plate (2).

2. The high-efficiency drying device for rice production and processing according to claim 1, characterized in that: The support plate (2) is provided with grooves (21) for accommodating the drying cylinder (3), the drying cylinder (3) is inserted between the two grooves (21), and the grooves (21) are communicated with the drying chamber (4); A discharge valve (9) is provided at the bottom of the support plate (2) on one side, and a feeding port (10) is provided on the support plate (2) on the other side. The discharge valve (9) and the feeding port (10) are respectively communicated with corresponding grooves (21).

3. The high-efficiency drying device for rice production and processing according to claim 2, characterized in that: The flip member (5) comprises a fixed rod (51) and a plurality of flip plates (52), wherein both ends of the fixed rod (51) are respectively arranged inside the grooves (21) of the two support plates (2), and the plurality of flip plates (52) are arranged in an annular shape on the fixed rod (51); The flipping member (5) further comprises a plurality of toggle rods (53) arranged in an annular shape on the side wall of the drying chamber (4), wherein one end of the toggle rods (53) away from the drying chamber (4) is bent toward the center of the drying cylinder (3).

4. The high-efficiency drying device for rice production and processing according to claim 2, characterized in that: The driving member (6) comprises: A first bracket (61) provided on the base (1); a drive motor (62) and a reducer (63) disposed on the first bracket (61); An annular rack (64) provided on the drying cylinder (3); A gear (65) provided at the output end of the reducer (63); The output shaft of the driving motor (62) is connected to the input shaft of the reducer (63), and the gear (65) and the annular rack (64) are meshed with each other.

5. The high-efficiency drying device for rice production and processing according to claim 2, characterized in that: The hot air supply assembly (7) comprises a pump body (71) and a heating tank (72), wherein the exhaust port of the pump body (71) is communicated with the heating tank (72), a plurality of electric heating wires (73) are provided inside the heating tank (72), and the other end of the heating tank (72) is communicated with a supply pipe (74), and the supply pipe (74) is communicated with a groove (21) on one side of the support plate (2).

6. The high-efficiency drying device for rice production and processing according to claim 2, characterized in that: A material guide trough (11) is provided on the base (1), and the material guide trough (11) is located below the discharge valve (9).

7. The high-efficiency drying device for rice production and processing according to claim 1, characterized in that: It also includes two groups of support mechanisms (12), the two groups of support mechanisms (12) being arranged opposite to each other on the base (1); The support mechanism (12) comprises: two second brackets (121) arranged oppositely on both sides of the base (1); two bearing seats (122) are arranged oppositely on the second brackets (121); a rotating shaft (123) is rotatably arranged between two adjacent bearing seats (122); a roller (124) is arranged on the rotating shaft (123); a metal ring (125) is arranged on the drying cylinder (3); and a groove is provided on the metal ring (125) to match the roller (124).