A circulating rice drying and separating device

Abstract

The utility model provides a kind of circulation formula rice drying separation device, including drying box, and the back side of drying box is equipped with separation hopper, and the top end side of separation hopper is provided with ration feeder mechanism, and ration feeder mechanism includes feeding hopper, conical flow divider, spoiler rod, feeding auger and connecting frame, and feeding auger is rotatably installed in the bottom end in feeding hopper, and one end is installed in the inside of separation hopper in penetration.The utility model is even dispersed rice to feeding hopper by conical flow divider, and it is combined with spoiler rod to continue to agitate, avoid caking or local accumulation, ensure screening efficiency;Feeding auger is matched with screen processing capacity by conveying capacity of speed regulation, and the stability of sorting is guaranteed;Utilize the difference of rice grain size to realize automatic sorting (small particle directly passes through, large particle rolls and separates), V-shaped guide vane accurately guides rice after sorting to two groups of material conveying auger, realizes the physical isolation of large and small particles (such as left mouth collects large particle, right mouth collects small particle), and sorting accuracy is significantly improved.

Description

Technical Field

[0001] This utility model belongs to the field of rice drying technology, and more specifically, it relates to a circulating rice drying and separation device. Background Technology

[0002] Rice drying is a crucial step in post-harvest grain processing, directly impacting grain quality and storage safety. Traditional drying equipment often employs hot air circulation, using multi-stage drying chambers to control moisture gradients. However, in practical applications, it commonly suffers from low heat utilization and insufficient drying uniformity. In recent years, circulating drying devices have effectively improved hot air contact efficiency and rice agitation uniformity through built-in multi-stage lifting plates and counter-current heat exchange structures. However, existing technologies primarily focus on optimizing temperature and humidity control, lacking systematic solutions to problems such as drying rate stratification and increased breakage rates caused by differences in rice particle size during the drying process.

[0003] Existing circulating drying equipment generally does not integrate dynamic screening function. When rice is harvested, the grain size distribution is uneven due to differences in maturity. Traditional equipment mixes large and small grains during the drying process, causing small-diameter rice to become scorched due to excessive heating time, while large-diameter rice becomes "half-cooked" due to insufficient evaporation of internal moisture. At the same time, the broken rice rate increases significantly.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a circulating rice drying and separation device in order to achieve a more practical purpose. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a circulating rice drying and separation device, which is achieved by the following specific technical means:

[0006] A circulating rice drying and separation device includes a drying chamber with a separation hopper installed on the back side of the drying chamber. A quantitative feeding mechanism is provided on one side of the top of the separation hopper. The quantitative feeding mechanism includes a feeding hopper, a conical diverting plate, a baffle rod, a feeding auger, and a connecting frame. The feeding auger is rotatably installed at the bottom of the feeding hopper, with one end penetrating inside the separation hopper. The conical diverting plate is installed at the top of the feeding hopper via the connecting frame. The baffle rod is rotatably installed inside the feeding hopper via a rotating shaft and is connected to a motor. A screening screen is installed at an inclined angle inside the separation hopper. A V-shaped guide plate is installed at the bottom of the screening screen. Two sets of conveying augers for conveying rice are installed on the side wall of the separation hopper. The bottom inlets of the two sets of conveying augers are respectively positioned opposite the two bottom corners of the guide plate.

[0007] Preferably, the drying chamber is provided with a first chamber and a second chamber, which are respectively for drying rice of different particle sizes. Multiple sets of drying plates are installed at intervals inside the first chamber and the second chamber. The cross-section of the multiple sets of drying plates is V-shaped and the middle is a cavity, and a hot air fan is installed in the cavity.

[0008] Preferably, centrifugal buckets are rotatably mounted on the top of both the first and second chambers, and an installation chamber is provided on the side wall of the drying chamber. A drive mechanism for driving the two sets of centrifugal buckets to rotate is provided in the installation chamber, and the top openings of the two sets of centrifugal buckets are respectively connected to the discharge pipes of the two sets of conveying augers.

[0009] Preferably, the drive mechanism includes pulleys fixedly mounted on the outer walls of two sets of centrifugal buckets, with belts connected to the outer walls of both sets of pulleys, and one set of pulleys being connected to a motor.

[0010] Preferably, a base is installed at the bottom of the drying chamber, and two sets of conveyor belts are installed on the base. The two sets of conveyor belts are located in two separate chambers and are used to output the dried rice.

[0011] Preferably, the surface of the drying plate is coated with a high-temperature resistant coating, and the high-temperature resistant coating is made of ceramic matrix composite material.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model uses a conical diversion plate to evenly distribute rice grains into the feeding hopper, combined with a baffle rod for continuous stirring, to avoid clumping or local accumulation and ensure screening efficiency; the feeding auger adjusts the conveying volume by speed adjustment to match the screen processing capacity and ensure sorting stability; automatic sorting is achieved by utilizing the difference in rice grain size (small particles pass directly through, large particles roll and separate), and a V-shaped guide plate precisely guides the sorted rice grains to two sets of conveying augers to achieve physical separation of large and small particles (e.g., large particles are collected at the left end, and small particles are collected at the right end), significantly improving the sorting accuracy;

[0014] 2. In this invention, the sorted rice grains are fed into the first chamber (small particles) and the second chamber (large particles) via independent conveying augers, adapting to different drying parameters (such as low-temperature fast drying for small particles and high-temperature slow drying for large particles), avoiding over-drying or under-drying caused by uniform parameters, and reducing energy consumption; the V-shaped cross-section drying plate extends the falling path of the rice grains, and combined with the continuous air supply from the hot air blower in the cavity, the rice grains are evenly spread and fully contacted with the hot air, improving heat utilization and shortening drying time; from sorting and conveying to drying, all are completed in the closed chamber, avoiding the mixing of external impurities (such as dust and pests) or secondary mixing of sorted rice grains, ensuring the quality of the finished product. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the utility model. Figure 1 .

[0016] Figure 2 This is a three-dimensional schematic diagram of the utility model. Figure 2 .

[0017] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0018] Figure 4 This is an enlarged schematic diagram of the quantitative feeding mechanism of this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0020] 1. Drying chamber; 101. First chamber; 102. Second chamber; 103. Installation chamber; 2. Quantitative feeding mechanism; 201. Feeding hopper; 202. Conical diverter plate; 203. Baffle rod; 204. Feeding auger; 205. Connecting frame; 3. Screening screen; 4. Conveying auger; 5. Centrifugal hopper; 6. Drying plate; 7. Conveyor belt; 8. Base; 9. Feed inlet; 10. Guide plate; 11. Separation hopper. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example:

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides a circulating rice drying and separation device, including a drying chamber 1. A separation hopper 11 is installed on the back side of the drying chamber 1. A quantitative feeding mechanism 2 is provided on one side of the top of the separation hopper 11. The quantitative feeding mechanism 2 includes a feeding hopper 201, a conical diverting plate 202, a baffle rod 203, a feeding auger 204, and a connecting frame 205. The feeding auger 204 is rotatably installed at the bottom of the feeding hopper 201, and one end is installed through the inside of the separation hopper 11. The conical diverting plate... 202 is installed on the top of the feeding hopper 201 via the connecting frame 205. The baffle rod 203 is rotatably installed inside the feeding hopper 201 via the rotating shaft and is connected to the motor. The screening screen 3 is installed at an inclined angle inside the separation hopper 11. The bottom end of the screening screen 3 is equipped with a V-shaped guide plate 10. Two sets of conveying augers 4 for conveying rice are installed on the side wall of the separation hopper 11. The bottom inlets 9 of the two sets of conveying augers 4 are respectively set opposite to the two bottom corners of the guide plate 10.

[0025] The drying chamber 1 is equipped with a first chamber 101 and a second chamber 102. The first chamber 101 and the second chamber 102 are respectively for drying rice of different particle sizes. Multiple sets of drying plates 6 are installed at intervals inside the first chamber 101 and the second chamber 102. The cross-section of the multiple sets of drying plates 6 is V-shaped and the middle is a cavity. A hot air fan is installed in the cavity. By setting the drying plates 6 with V-shaped cross-section, the rice can be evenly spread and slowly fall by utilizing the guiding characteristics of the V-shaped cross-section, thereby prolonging the hot air contact time and improving the drying efficiency.

[0026] Centrifugal buckets 5 are rotatably mounted on the top of both the first chamber 101 and the second chamber 102. The side wall of the drying chamber 1 is provided with an installation chamber 103. The installation chamber 103 is provided with a drive mechanism for driving the two sets of centrifugal buckets 5 to rotate. The top openings of the two sets of centrifugal buckets 5 are respectively connected to the discharge pipes of the two sets of conveying augers 4. By setting up centrifugal buckets 5, the rice is evenly distributed in the partitions of multiple sets of drying plates 6 in the first chamber 101 and the second chamber 102 by centrifugal force, avoiding the rice from being concentrated in one partition and improving drying efficiency.

[0027] The drive mechanism includes pulleys fixedly mounted on the outer walls of two sets of centrifugal buckets 5. The outer walls of the two sets of pulleys are connected to a belt, and one set of pulleys is connected to a motor.

[0028] The drying chamber 1 has a base 8 installed at the bottom, and two sets of conveyor belts 7 are installed on the base 8. The two sets of conveyor belts 7 are located in two chambers respectively, and are used to output the dried rice.

[0029] The surface of the drying plate 6 is coated with a high-temperature resistant coating. The high-temperature resistant coating is made of ceramic-based composite material. The ceramic-based high-temperature resistant coating (such as an alumina composite coating) on ​​the surface of the drying plate 6 can withstand temperatures above 200°C, thus avoiding structural deformation or corrosion caused by long-term high-temperature operation.

[0030] The working principle of this embodiment is as follows: During use, the operator feeds rice into the feeding hopper 201 of the quantitative feeding mechanism 2. Then, through the coordinated use of components such as the feeding hopper 201, conical diverting plate 202, baffle rod 203, feeding auger 204, and connecting frame 205, the rice is conveyed to the screening screen 3 on the separating hopper 11. Due to the inclined angle of the screening screen 3, the rice is screened according to its particle size as it falls onto the screen. Smaller grains fall directly to the bottom of the separating hopper 11, while larger grains roll on the surface of the screen 3 due to its inclination, rolling to the other side of the screen and falling to the bottom of the separating hopper 11. Rice grains of the same size are fed into the first chamber 101 (small size) and the second chamber 102 (large size) through the combined use of the conveying auger 4 and the centrifugal hopper 5. Inside the chamber, the drying plate 6 continuously provides hot air through the hot air blower in the hollow cavity. The V-shaped cross-section guides the flow characteristics of the rice grains, making them spread evenly and fall slowly, thus prolonging the hot air contact time and improving drying efficiency. The ceramic-based high-temperature resistant coating (such as an alumina composite coating) on ​​the surface of the drying plate 6 can withstand temperatures above 200°C, avoiding structural deformation or corrosion caused by long-term high-temperature operation. After drying, the rice grains fall into the conveyor belt 7 at the bottom of the chamber by gravity. The dried rice grains are then transported by the conveyor belt 7 to the discharge port of the base 8 for collection.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A circulating rice drying and separating device, comprising a drying box (1), characterized in that: A separation hopper (11) is installed on the back side of the drying chamber (1). A quantitative feeding mechanism (2) is provided on one side of the top of the separation hopper (11). The quantitative feeding mechanism (2) includes a feeding hopper (201), a conical diverting plate (202), a baffle rod (203), a feeding auger (204), and a connecting frame (205). The feeding auger (204) is rotatably installed at the bottom of the feeding hopper (201), and one end is installed through the separation hopper (11). The conical diverting plate (202) is connected to the connecting frame (205). The baffle rod (203) is mounted on the top of the feeding hopper (201) and is rotatably installed inside the feeding hopper (201) via a rotating shaft and is connected to a motor. The internal inclined angle of the separation hopper (11) is fitted with a screen (3). The bottom end of the screen (3) is fitted with a V-shaped guide plate (10). The side wall of the separation hopper (11) is connected to two sets of conveying augers (4) for conveying rice. The bottom inlets (9) of the two sets of conveying augers (4) are respectively set opposite to the two bottom corners of the guide plate (10).

2. The cyclic paddy drying and separating apparatus according to claim 1, characterized by: The drying chamber (1) is provided with a first chamber (101) and a second chamber (102). The first chamber (101) and the second chamber (102) are respectively for drying rice of different particle sizes. Multiple sets of drying plates (6) are installed at intervals inside the first chamber (101) and the second chamber (102). The cross-section of the multiple sets of drying plates (6) is V-shaped and the middle is a cavity. A hot air fan is installed in the cavity.

3. The cyclic paddy drying and separating apparatus according to claim 2, wherein: Centrifugal buckets (5) are rotatably mounted on the top of the first chamber (101) and the second chamber (102). The side wall of the drying box (1) is provided with an installation chamber (103). The installation chamber (103) is provided with a drive mechanism for driving the two sets of centrifugal buckets (5) to rotate. The top openings of the two sets of centrifugal buckets (5) are respectively connected to the discharge pipes of the two sets of conveying augers (4).

4. The cyclic paddy drying and separating apparatus according to claim 3, wherein: The drive mechanism includes pulleys fixedly mounted on the outer walls of two sets of centrifugal buckets (5), and the outer walls of the two sets of pulleys are connected to a belt. One set of pulleys is connected to a motor.

5. The cyclic paddy drying and separating apparatus according to claim 4, wherein: The bottom of the drying chamber (1) is equipped with a base (8), and two sets of conveyor belts (7) are installed on the base (8). The two sets of conveyor belts (7) are located in two chambers respectively, and are used to output the dried rice.

6. The cyclic paddy drying and separating apparatus according to claim 4, wherein: The surface of the drying plate (6) is coated with a high-temperature resistant coating, which is made of ceramic matrix composite material.

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