A high-efficiency energy-saving drying layer structure for a grain drying tower

Abstract

The utility model discloses a kind of high-efficiency energy-saving drying layer structures for grain drying tower, belong to grain drying technical field;Including the multilayer drying assembly of being arranged in the drying tower body, multilayer drying assembly includes a layer of cold air cooling assembly and multilayer hot air drying assembly, cold air cooling assembly and hot air drying assembly all include at least two drying layers;Drying layer is composed of drying cabinet and multiple rows of angle box structure, angle box structure includes integrally bent V-shaped plate and the vertical plate connected in the lower side of V-shaped plate, the board surface of V-shaped plate is provided with multiple rows of staggered distribution trapezoidal punching, trapezoidal punching is the punching structure that is punched from inside to outside by the inside of V-shaped plate, and the opening direction of trapezoidal punching is downward.The utility model in the present application shortens hot air transmission distance by setting drying cabinet with air inlet in middle and ventilation on both sides, so that the heating of grain is more uniform;And design the trapezoidal punching of opening downward by punching from inside to outside, can improve hot air utilization and avoid grain jamming ventilation hole.

Description

Technical Field

[0001] This utility model relates to a grain drying tower structure, specifically a high-efficiency and energy-saving drying layer structure for a grain drying tower, belonging to the field of grain drying technology. Background Technology

[0002] With the increasing mechanization of agriculture, the harvesting time during the grain harvest season has been greatly shortened. Large quantities of grain are harvested in a short period of time, and the traditional natural drying method can no longer meet the requirements. In addition, due to weather conditions, such as prolonged rainy weather, large quantities of grain cannot be dried in time, which may cause problems such as mold, insects, and sprouting, resulting in unnecessary losses for farmers.

[0003] Currently, to solve the problem of grain drying, technicians have designed specialized drying tower devices for drying crops. These devices allow for the timely drying of large quantities of newly harvested grain, significantly improving drying efficiency, ensuring uniform moisture content after drying, and maintaining grain quality. Therefore, they have profound significance for the development of agriculture in my country. However, existing grain drying tower devices still have the following problems: 1) For example, the Chinese utility model patent with authorization announcement number CN207922805U and invention name "Anti-caking Grain Dryer" discloses a layered dryer structure including a grain feeding layer, at least one drying layer and at least one grain storage layer. In the drying layer, a diverter assembly that runs through the outer shell of the drying layer is designed from left to right. The purpose of drying grain is achieved by the continuous flow of hot air from the diverter. However, the hot air utilization rate of this closed corner box structure is low. In order to ensure the drying quality of the grain, the machine needs to operate at low temperature for a long time. Therefore, the daily drying efficiency is low and the fuel consumption is large. 2) To improve the utilization rate of hot air, existing drying equipment has added openings for hot air passage to the drying structure. For example, the Chinese utility model patent with authorization announcement number CN207688600U and invention name "A Corn Seed Drying System" discloses setting gas passages on the V-shaped partition for drying corn seeds. This through-hole structure with corresponding vertical holes greatly increases the convection flow of hot air in the drying structure and improves the utilization rate of hot air. However, once the holes of this opening structure are made to a fixed size, it can only be used for drying grains of one size. It cannot be used for multiple purposes and adapt to the drying needs of different grains at the same time. In addition, the vertical through-holes are easily blocked by small-sized defective grains during the feeding process, which affects the hot air output.

[0004] Therefore, there is an urgent need to design a drying layer structure for a grain drying tower that can simultaneously meet the requirements of high hot air utilization efficiency, energy saving, and preventing grain from clogging the ventilation holes. Utility Model Content

[0005] The purpose of this invention is to overcome the problems of low hot air utilization and easy blockage after opening the gas passage in existing grain drying towers, and to provide a high-efficiency and energy-saving drying layer structure for grain drying towers. By designing trapezoidal perforations with downward openings and stamping from the inside out, the perforations allow hot air to circulate in the corner box structure, which can improve the hot air utilization rate and save energy and protect the environment. In addition, the downward openings and stamping from the inside out can also prevent grain from getting stuck, thus improving the practicality of the device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency and energy-saving drying layer structure for a grain drying tower, comprising a multi-layer drying assembly disposed within the drying tower body, the multi-layer drying assembly comprising a cold air cooling assembly and a multi-layer hot air drying assembly, wherein the cold air cooling assembly is located at the bottom of the drying tower body, the cold air cooling assembly comprises at least two drying layers, and a cold air fan is connected to the outside of the bottom drying layer through a cold air channel; the hot air drying assembly comprises a hot air layer and at least two drying layers, and a hot air fan is connected to the outside of the hot air layer through a hot air channel; The drying layer consists of a drying chamber and multiple rows of corner box structures inside it. The drying chamber is divided into a hot air cavity in the middle and drying cavities on both sides by two vertical plates. The hot air cavity is connected to the hot air layer. The corner box structures are arranged in multiple rows in a staggered manner on both sides of the hot air cavity. The bottom row of corner box structures is connected to the outside of the drying chamber, and the remaining corner box structures are connected to the hot air cavity. The corner box structure includes an integrally bent V-shaped plate and vertical plates connected to the lower sides of the V-shaped plate. The V-shaped plate has multiple rows of staggered trapezoidal punches on its surface. The trapezoidal punches are punched from the inside to the outside of the V-shaped plate, and the openings of the trapezoidal punches face downwards.

[0007] Furthermore, the V-shaped plate has a thickness of 1.5mm, and the lower opening spacing of the trapezoidal punch is 1.2mm; the upper bottom surface length of the trapezoidal punch is 14mm, the lower bottom surface length is 18mm, and the height is 15mm.

[0008] Furthermore, the spacing between two adjacent trapezoidal punches in the same row is 60mm, the row spacing is 20mm, and a 30mm gap is left between every five rows.

[0009] Furthermore, the V-shaped plate and the vertical plate in the corner box structure are also provided with flanged connecting plates at both ends, which are provided with connecting holes and are fixedly connected to the drying chamber by bolts.

[0010] Furthermore, a row of corner box structures at the same height is symmetrically distributed in the drying cavities on both sides, and three rows of corner box structures are arranged vertically in the drying cavities.

[0011] Furthermore, the hot air layer is sealed to the adjacent drying layer below, and the upper and lower drying layers are connected in the same drying assembly.

[0012] Furthermore, the bends in the hot air duct and the connection points between the hot air duct and the outer wall of the drying tower body are all fixedly connected by hexagonal flanges and bolts.

[0013] The beneficial effects of this utility model are: 1) The corner box structure of this utility model is designed with trapezoidal punches that face downwards and are punched from the inside out. On the one hand, the punches allow hot air to circulate in the corner box structure, so that the grain in the tower is heated quickly, fully and evenly, which can improve drying efficiency, hot air utilization rate and energy saving and environmental protection; on the other hand, the punches that face downwards and are punched from the inside out can also prevent grain from getting stuck, making it suitable for drying different grains and expanding the applicability of the device.

[0014] 2) The drying layer structure of this utility model shortens the hot air transmission distance by setting a drying box with air intake in the middle and ventilation on both sides, so that the grain is heated more evenly, thereby improving the drying efficiency of the grain and saving energy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly of the drying layer structure of this utility model inside the drying tower. Figure 2 This is a three-dimensional schematic diagram of the drying layer structure of this utility model; Figure 3 for Figure 2 A three-dimensional schematic diagram of the center corner box structure; Figure 4 for Figure 3 A schematic diagram of a trapezoidal punching structure; Figure 5 for Figure 3 Side sectional view of the trapezoidal punched structure.

[0016] In the diagram, 1-drying tower body, 2-elevator, 3-drying layer, 4-cooler, 5-cooler duct, 6-hot air blower, 7-hot air duct, 8-hot air layer, 9-drying box, 901-hot air cavity, 902-drying cavity, 10-corner box structure, 11-V-shaped plate, 12-, 13-, 14-. Detailed Implementation

[0017] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0018] Example: Figure 1As shown, this utility model provides a high-efficiency and energy-saving drying layer structure for a grain drying tower, including a multi-layer drying assembly installed inside the drying tower body 1. The multi-layer drying assembly includes a cold air cooling assembly and a multi-layer hot air drying assembly. The cold air cooling assembly is located at the bottom of the drying tower body 1 and includes at least two drying layers 3. A cold air fan 4 is connected to the outside of the bottom drying layer 3 through a cold air channel 5. The hot air drying assembly includes a hot air layer 8 and at least two drying layers 3. A hot air fan 6 is connected to the outside of the hot air layer 8 through a hot air channel 7.

[0019] The hot air layer 8 is sealed to the adjacent drying layer 3 below, and the upper and lower drying layers 3 are connected in the same drying assembly.

[0020] The bends in the hot air duct 7 and the connection between the hot air duct 7 and the outer wall of the drying tower body 1 are all fixedly connected by hexagonal flanges and bolts.

[0021] Taking a 200-ton-per-day drying capacity equipment as an example, the drying layer 3 inside the drying tower body 1 has a total of 11 layers, of which the cold air cooling component has 3 drying layers 3, and the cold air fan 4 is model 11KW-7.1A; the drying layer 3 in the hot air drying component is divided into 3, 3, and 2 from bottom to top, of which the hot air fan 6 in the bottommost hot air drying component is model 22KW-8C, the hot air fan 6 in the middle hot air drying component is model 37KW-8C, and the hot air fan 6 in the topmost hot air drying component is model 37KW-8C; the grain in the drying tower body 1 is lifted by the elevator 2 installed on the left side and poured into the upper discharge port, and is dried by air supply through the cold air fan 4 and hot air fan 6 installed on the other side.

[0022] like Figure 2 As shown, the drying layer 3 consists of a drying chamber 9 and multiple rows of corner box structures 10 fixed inside it. The drying chamber 9 is divided into a central hot air cavity 901 and two side drying cavities 902 by two vertical plates. The hot air cavity 901 is connected to the hot air layer 8. The corner box structures 10 are arranged in multiple rows, vertically perpendicular to the two side vertical plates of the hot air cavity 901, in the drying cavity 902. The bottom row of corner box structures 10 is connected to the outside of the drying chamber 9, while the other corner box structures 10 are connected to the hot air cavity 901. This drying chamber with central air intake and side ventilation can shorten the hot air transmission distance, make the grain heated more evenly, thereby improving the grain drying efficiency and saving energy.

[0023] A row of corner box structures 10 at the same height is symmetrically distributed in the drying cavities 902 on both sides, and three rows of corner box structures 10 are arranged vertically in the drying cavities 902.

[0024] like Figures 3-5As shown, the corner box structure 10 includes an integrally bent V-shaped plate 11 and vertical plates 12 connected to the lower sides of the V-shaped plate 11. Both ends of the V-shaped plate 11 and the vertical plates 12 are vertically connected to flanged connecting plates 14. The flanged connecting plates 14 have connecting holes and are fixedly connected to the drying chamber 9 with bolts. The V-shaped plate 11 has multiple rows of staggered trapezoidal perforations 13 on its surface. The trapezoidal perforations 13 are punched from the inside out from the inner side of the V-shaped plate 11, and the openings of the trapezoidal perforations 13 face downwards.

[0025] The V-shaped plate 11 has a thickness of 1.5mm, and the lower opening spacing of the trapezoidal punch 13 is 1.2mm. The upper bottom surface length of the trapezoidal punch 13 is 14mm, the lower bottom surface length is 18mm, and the height is 15mm. The spacing between two adjacent trapezoidal punches 13 in the same row is 60mm, the row spacing is 20mm, and a 30mm gap is left between every five rows.

[0026] The corner box structure features trapezoidal perforations with downward-facing openings and outward-pressing design. These perforations allow hot air to circulate within the corner box structure, ensuring that the grain inside the tower is heated quickly, thoroughly, and evenly, thus improving drying efficiency, hot air utilization, and energy conservation. Furthermore, the downward-facing perforations prevent grain from getting stuck, making it suitable for drying different types of grains and expanding the applicability of the device.

[0027] Working principle: The grain to be dried is lifted by the elevator 2 installed on the left side of the drying tower body 1 and poured into the feed port at the top of the drying tower body 1. It is then dried by the air blower 4 and the hot air blower 6 installed on the other side. The air blower 4 is used to cool down the grain that has been dried at the bottom of the drying tower body 1 to avoid damage to the grain quality due to excessive temperature. The hot air blower 6 is used to dry the grain falling from the top. During the falling process, the grain falls into the drying chamber in the drying layer, and then onto multiple corner box structures 10. Due to the structural design of the V-shaped plate 11 and vertical plate 12 in the corner box structure 10, the grain falls along the V-shaped plate 11 onto the lower corner box structure 10 located between the two upper corner box structures 10. During this process, due to the presence of trapezoidal perforations 13 on the surface of the V-shaped plate 11, the hot air blown in by the hot air blower 6 passes through the hot air layer 8, the hot air cavity 901, and the trapezoidal perforations 13 in sequence to reach the surface of the grain, thereby enabling the grain to be dried in a short time and improving the grain drying efficiency. Moreover, the opening of the trapezoidal perforations 13 faces downward and is punched from the inside out, so the outer surface of the V-shaped plate 11 is smooth and raised, which can avoid clogging the grain while delivering hot air. It can be used for drying grains of different sizes, thus improving the applicability of the device.

[0028] This invention shortens the hot air transmission distance by setting up a drying box with air intake in the middle and ventilation on both sides, making the grain heat more evenly; and the design of trapezoidal punches with downward openings and punching from the inside out can improve the utilization rate of hot air and prevent grain from blocking the ventilation holes.

[0029] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A high-efficiency and energy-saving drying layer structure for a grain drying tower, characterized in that: The drying unit includes a multi-layer drying assembly installed inside the drying tower body (1). The multi-layer drying assembly includes a cold air cooling assembly and a multi-layer hot air drying assembly. The cold air cooling assembly is located at the bottom of the drying tower body (1) and includes at least two drying layers (3). The outer side of the bottom drying layer (3) is connected to a cold air fan (4) through a cold air channel (5). The hot air drying assembly includes a hot air layer (8) and at least two drying layers (3). The outer side of the hot air layer (8) is connected to a hot air fan (6) through a hot air channel (7). The drying layer (3) consists of a drying box (9) and multiple rows of corner box structures (10) arranged inside it. The drying box (9) is divided into a hot air cavity (901) in the middle and drying cavities (902) on both sides by two vertical plates. The hot air cavity (901) is connected to the hot air layer (8). The corner box structures (10) are arranged in multiple rows in the drying cavity (902) with the vertical plates on both sides perpendicular to the hot air cavity (901). The bottom row of corner box structures (10) is connected to the outside of the drying box (9), and the remaining corner box structures (10) are connected to the hot air cavity (901). The corner box structure (10) includes an integrally bent V-shaped plate (11) and vertical plates (12) connected to the lower sides of the V-shaped plate (11). The V-shaped plate (11) has multiple rows of staggered trapezoidal punches (13) on its surface. The trapezoidal punches (13) are punched from the inside to the outside of the inner side of the V-shaped plate (11), and the opening direction of the trapezoidal punches (13) is downward.

2. The high-efficiency and energy-saving drying layer structure for a grain drying tower according to claim 1, characterized in that: The thickness of the V-shaped plate (11) is 1.5 mm, and the lower opening spacing of the trapezoidal punch (13) is 1.2 mm; the upper bottom length of the trapezoidal punch (13) is 14 mm, the lower bottom length is 18 mm, and the height is 15 mm.

3. A high-efficiency and energy-saving drying layer structure for a grain drying tower according to claim 1 or 2, characterized in that: The spacing between two adjacent trapezoidal punches (13) in the same row is 60mm, the row spacing is 20mm, and a gap of 30mm is left between every five rows.

4. The high-efficiency and energy-saving drying layer structure for a grain drying tower according to claim 1, characterized in that: The V-shaped plate (11) and vertical plate (12) in the corner box structure (10) are also provided with flanged connecting plates (14) that are vertically outward at both ends. The flanged connecting plates (14) are provided with connecting holes and are fixedly connected to the drying box body (9) by bolts.

5. The high-efficiency and energy-saving drying layer structure for a grain drying tower according to claim 1, characterized in that: A row of corner box structures (10) located at the same height in the drying cavities (902) on both sides are symmetrically distributed, and the corner box structures (10) are arranged in three rows in the drying cavities (902).

6. The high-efficiency and energy-saving drying layer structure for a grain drying tower according to claim 1, characterized in that: The hot air layer (8) is sealed to the adjacent drying layer (3) below, and the upper and lower drying layers (3) are connected in the same drying assembly.

7. The high-efficiency and energy-saving drying layer structure for a grain drying tower according to claim 1, characterized in that: The bends in the hot air duct (7) and the connection between the hot air duct (7) and the outer wall of the drying tower body (1) are all fixedly connected by hexagonal flanges and bolts.

Images