Heat energy circulation type grain drying device

Abstract

The utility model discloses a heat energy circulation type grain drying device which comprises a drying tower and a plurality of air inlet pipes I, the drying tower comprises a high-temperature drying layer, and the high-temperature drying layer is arranged close to the top of the drying tower; a plurality of angular boxes I; the heat energy circulation layer is arranged in the drying tower, and the heat energy circulation layer is arranged below the high-temperature drying layer; the heat energy circulation layer comprises a plurality of gas inlet pipes II; a plurality of angular boxes II; a gas guide cover; the tempering layer is arranged below the heat energy circulation layer; the raw material tower is arranged on one side of the drying tower; a plurality of air inlet pipes III; an exhaust port; and an elevator. According to the heat energy circulation type grain drying device, the double-drying-air-path design of the high-temperature drying layer and the heat energy circulation layer is adopted, heat energy circulation drying operation of reversing air inlet is carried out on grains, afterheat of hot air is fully used for carrying out preheating treatment on the grains to be dried in the raw material tower, energy is saved, emission is reduced, and the drying efficiency is improved. Grain drying efficiency is improved, and grain quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to a heat energy circulation type grain drying device. Background Art

[0002] Most of the existing grain drying equipment is mainly composed of a hot air furnace and a drying tower. The Chinese patent with application number 201820407135.3 discloses a multi-stage grain drying system, including a raw material warehouse, a first elevator, a drying tower, a second elevator and a finished product warehouse connected in sequence. The drying tower is provided with a grain storage section, a multi-stage drying section, and a cooling section from top to bottom. The multi-stage drying section is composed of a high-temperature drying section, a first slow-release section, a medium-temperature drying section, a second slow-release section, a low-temperature drying section and a third slow-release section from top to bottom. The utility model multi-stage grain drying system has high production efficiency, low energy consumption, and is provided with multiple slow-release sections, and the grain quality is improved. However, the drying gas of the high-temperature drying section, the medium-temperature drying section and the low-temperature drying section is directly discharged from the drying tower, and the residual heat of the drying is not effectively recovered and reused, which still causes a certain amount of heat energy loss. Utility Model Content

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described below.

[0004] Another object of the utility model is to provide a thermal energy circulation type grain drying device, which is reasonably designed and easy to use. It adopts a double drying air path design of a high-temperature drying layer and a thermal energy circulation layer, thereby realizing a thermal energy circulation drying operation of the grain with reversing air intake. Afterwards, the waste heat of the hot air is fully utilized to preheat the grain to be dried in the raw material tower, thereby saving energy and reducing emissions, improving grain drying efficiency, and ensuring grain quality.

[0005] In order to achieve these purposes and other advantages according to the utility model, a heat energy circulation type grain drying device is provided, comprising:

[0006] A drying tower, which includes a high-temperature drying layer, which is arranged near the top of the drying tower; a plurality of air inlet pipes I, which are evenly spaced and laterally arranged at the bottom of the high-temperature drying layer, one end of the plurality of air inlet pipes I is connected to an external hot air pipe, and the other end of the plurality of air inlet pipes I is sealed and fixed to the inner wall of the drying tower, and a plurality of jet holes I are arranged on the pipe wall of any of the plurality of air inlet pipes I; a plurality of angular boxes I, which are evenly spaced and laterally arranged at the top of the high-temperature drying layer, one end of the plurality of angular boxes I is connected to an external hot air pipe, and the other end of the plurality of angular boxes I is connected to a plurality of air outlets I on the side wall of the drying tower, and the plurality of angular boxes I and the plurality of air inlet pipes I are arranged parallel to each other; a thermal energy circulation layer, which is arranged in the drying tower, and the thermal energy circulation layer is arranged below the high-temperature drying layer; the thermal energy circulation layer includes a plurality of air inlet pipes II, which are all The bottom of the heat energy circulation layer is evenly spaced and transversely arranged, one end of the multiple air inlet pipes II is connected to the multiple air inlet ports II on the side wall of the drying tower, the other end of the multiple air inlet pipes II is sealed and fixed to the inner wall of the drying tower, and the multiple air outlet ports I and the multiple air inlet ports II are located on the same side wall of the drying tower; a plurality of jet holes II are arranged on the pipe wall of any air inlet pipe II among the multiple air inlet pipes II; a plurality of angular boxes II are evenly spaced and arranged on the top of the heat energy circulation layer, and one end of the multiple angular boxes II is sealed and fixed to the inner wall of the drying tower, the other end of the multiple angular boxes II is connected to the multiple air outlet ports III on the side wall of the drying tower, and the multiple angular boxes II and the multiple air inlet pipes II are arranged parallel to each other; an air guide hood is a rectangular hollow hood body, and the air guide hood is buckled on the multiple air outlet ports I and the multiple air inlet ports II; a slow-release layer is arranged below the heat energy circulation layer;

[0007] A raw material tower is arranged on one side of a drying tower; a plurality of air inlet pipes III are evenly spaced and laterally arranged in the raw material tower, one end of the plurality of air inlet pipes III is connected to a plurality of air outlets III through a pipeline, the other end of the plurality of air inlet pipes III is closed, and a plurality of air jet holes III are arranged on the pipe wall of any air inlet pipe III of the plurality of air inlet pipes III; an exhaust port is arranged at the top of the raw material tower; an elevator, the lower end of which is connected to a discharge port at the bottom of the raw material tower, and the discharge end of the elevator is connected to a feed port of the drying tower.

[0008] Preferably, it further comprises: an elevator II, the lower end of which is connected to the discharge port of the drying tower, and the upper end of the elevator II is connected to the feed port of the drying tower.

[0009] Preferably, it further comprises: a partition plate, which is arranged transversely in the air guide cover, and divides the air guide cover into an upper air inlet cavity and a lower air outlet cavity, a plurality of air outlet ports I are arranged in the air inlet cavity, and a plurality of air inlet ports II are arranged in the air outlet cavity; a partition plate through hole, which is arranged on the partition plate to connect the air inlet cavity and the air outlet cavity; a one-way valve, which is arranged at the partition plate through hole;

[0010] A filter is arranged in the air inlet cavity and close to the air vent;

[0011] A hot air replenishment pipe, the air inlet end of which is connected to the air outlet cavity, and the hot air flow rate of the hot air replenishment pipe is less than half of the hot air flow rate of the plurality of air inlets II;

[0012] One-way valve II is arranged on the hot air supply pipe.

[0013] Preferably, the hot air flow rate of the multiple air inlet pipes I is greater than the hot air flow rate at one end of the multiple angular boxes I; the air inlet volume at one end of the multiple angular boxes I is greater than the hot air flow rate of the hot air supplementary pipe.

[0014] Preferably, it further comprises: a filter II, whose air inlet is connected to the exhaust port of the raw material tower, and whose air outlet is connected to the multiple air inlets IV of the slow-release layer;

[0015] The baffle is obliquely arranged between the heat energy circulation layer and the slow-release layer; the grain drop opening is opened on the baffle and is arranged close to the edge of the baffle;

[0016] A plurality of air intake pipes IV are evenly spaced and arranged in the slow-release layer, one end of the plurality of air intake pipes IV is connected to a plurality of air intake ports IV, the other end of the plurality of air intake pipes IV is closed, and a plurality of air injection holes IV are arranged on the pipe wall of any air intake pipe IV of the plurality of air intake pipes IV;

[0017] A plurality of air outlets IV are arranged on the side wall of the slow-release layer, and the plurality of air outlets IV are not interconnected with the plurality of air inlet pipes IV. The plurality of air outlets IV are arranged on the side wall of the drying tower away from the grain drop port.

[0018] Preferably, the plurality of angular boxes I are arranged in at least three rows distributed vertically, and in the vertical direction, the plurality of angular boxes I adjacent to each other are staggered; the number of the plurality of air inlet pipes I is less than or equal to the number of the plurality of angular boxes I;

[0019] The multiple angular boxes II are arranged in at least two rows distributed vertically, and in the vertical direction, the multiple angular boxes II adjacent to each other are staggered; the number of the multiple air intake pipes II is less than or equal to the number of the multiple angular boxes II.

[0020] The utility model at least has the following beneficial effects:

[0021] From top to bottom, a high-temperature drying layer, a heat energy circulation layer and a slow thawing layer are sequentially arranged in the drying tower, and the grains are sequentially subjected to high-temperature drying, medium-temperature drying and low-temperature slow thawing to ensure the quality of the grains; wherein, in the high-temperature drying layer, the hot air entering through multiple air inlet pipes Ⅰ is uniformly ejected through multiple jet holes Ⅰ to dry the falling grains, and then the rising hot air merges with the hot air entering through multiple angular boxes Ⅰ to dry the grains falling from the top of the drying tower again, and then, under the action of air pressure, it is discharged into the air guide hood through multiple air outlets Ⅰ, and then enters multiple air inlet pipes Ⅱ through multiple air inlets Ⅱ, so as to further dry the grains falling from the high-temperature drying layer to the heat energy circulation layer, and then, a part of the hot air with residual heat is discharged from multiple air outlets Ⅲ under the shielding of the angular box Ⅱ, and a part of the hot air with residual heat rises to the high-temperature drying layer to enter the next hot air cycle, so as to realize continuous heat energy circulation drying of the grains;

[0022] The raw material tower carries the grain to be dried, and the hot air with residual heat introduced into the multiple air inlet pipes III is ejected through the multiple jet holes III, and then the cooled air is discharged through the exhaust port.

[0023] In summary, the thermal energy circulation type grain drying device provided by the utility model has a reasonable design and is easy to use. It adopts a dual drying air path design of a high-temperature drying layer and a thermal energy circulation layer, thereby realizing the thermal energy circulation drying operation of the grain with reversing air intake. Afterwards, the waste heat of the hot air is fully utilized to preheat the grain to be dried in the raw material tower, thereby saving energy and reducing emissions, improving grain drying efficiency, and ensuring grain quality.

[0024] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic cross-sectional structure diagram of a heat energy circulation type grain drying device in one embodiment of the utility model;

[0026] Figure 2 It is a side structural schematic diagram of a drying tower described in one embodiment of the utility model;

[0027] Figure 3 This is a front view structural schematic diagram of a drying tower in another embodiment of the utility model;

[0028] Figure 4 It is a schematic cross-sectional structure diagram of the air guide cover described in one embodiment of the utility model;

[0029] Figure 5 It is a schematic cross-sectional structure diagram of a drying tower in another embodiment of the utility model, wherein a slow-release layer is shown;

[0030] Figure 6 The figure is a schematic diagram of the side structure of a drying tower in another embodiment of the utility model. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0032] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0033] like Figure 1 , 2 As shown, the utility model provides a heat energy circulation type grain drying device, comprising:

[0034] A drying tower 10, which includes a high-temperature drying layer 20, which is arranged near the top of the drying tower; a plurality of air inlet pipes I 201, which are evenly spaced and laterally arranged at the bottom of the high-temperature drying layer, one end of the plurality of air inlet pipes I is connected to an external hot air pipe 30, and the other end of the plurality of air inlet pipes I is sealed and fixed to the inner wall of the drying tower, and a plurality of jet holes I are arranged on the pipe wall of any of the plurality of air inlet pipes I; a plurality of angular boxes I 202, which are evenly spaced and laterally arranged at the top of the high-temperature drying layer, one end of the plurality of angular boxes I is connected to an external hot air pipe, and the other end of the plurality of angular boxes I is connected to a plurality of air outlets I 101 on the side wall of the drying tower, and the plurality of angular boxes I and the plurality of air inlet pipes I are arranged parallel to each other; a thermal energy circulation layer 40, which is arranged in the drying tower, and the thermal energy circulation layer is arranged below the high-temperature drying layer; the thermal energy circulation layer includes a plurality of air inlet pipes II 401 , which are evenly spaced and transversely arranged at the bottom of the thermal energy circulation layer, one end of the multiple air inlet pipes II is connected to the multiple air inlets II 102 on the side wall of the drying tower, and the other end of the multiple air inlet pipes II is sealed and fixed to the inner wall of the drying tower, and the multiple air outlets I and the multiple air inlets II are located on the same side wall of the drying tower; multiple jet holes II are arranged on the pipe wall of any air inlet pipe II among the multiple air inlet pipes II; multiple angular boxes II 402, which are evenly spaced and arranged at the top of the thermal energy circulation layer, and one end of the multiple angular boxes II is sealed and fixed to the inner wall of the drying tower, and the other end of the multiple angular boxes II is connected to the multiple air outlets III 103 on the side wall of the drying tower, and the multiple angular boxes II and the multiple air inlet pipes II are arranged parallel to each other; an air guide cover 50, which is a rectangular hollow cover body, and the air guide cover is buckled on the multiple air outlets I and the multiple air inlets II; a slow-release layer 60, which is arranged below the thermal energy circulation layer;

[0035] A raw material tower 70 is arranged on one side of a drying tower; a plurality of air inlet pipes III 701 are evenly spaced and laterally arranged in the raw material tower, and one end of the plurality of air inlet pipes III is connected to a plurality of air outlets III through a pipeline, and the other end of the plurality of air inlet pipes III is closed, and a plurality of jet holes III are arranged on the pipe wall of any air inlet pipe III of the plurality of air inlet pipes III; an exhaust port 702 is arranged at the top of the raw material tower; an elevator 80, a lower end of which is connected to a discharge port at the bottom of the raw material tower, and a discharge end of the elevator is connected to a feed port of the drying tower.

[0036] In this scheme, from top to bottom, a high-temperature drying layer, a heat energy circulation layer and a slow thawing layer are sequentially arranged in the drying tower, and the grains are sequentially subjected to high-temperature drying, medium-temperature drying and low-temperature slow thawing to ensure the quality of the grains; wherein, in the high-temperature drying layer, the hot air entering through multiple air inlet pipes Ⅰ is uniformly ejected through multiple jet holes Ⅰ to dry the falling grains, and then the rising hot air merges with the hot air entering through multiple angular boxes Ⅰ to dry the grains falling from the top of the drying tower again, and then, under the action of air pressure, it is discharged into the air guide hood through multiple air outlets Ⅰ, and then enters multiple air inlet pipes Ⅱ through multiple air inlets Ⅱ, so as to further dry the grains falling from the high-temperature drying layer to the heat energy circulation layer, and then, a part of the hot air with residual heat is discharged from multiple air outlets Ⅲ under the shielding of the angular box Ⅱ, and a part of the hot air with residual heat rises to the high-temperature drying layer to enter the next hot air cycle, so as to realize continuous heat energy circulation drying of the grains;

[0037] The raw material tower carries the grain to be dried, and the hot air with residual heat introduced into the multiple air inlet pipes III is ejected through the multiple jet holes III, and then the cooled air is discharged through the exhaust port.

[0038] In summary, the thermal energy circulation type grain drying device provided by the utility model has a reasonable design and is easy to use. It adopts a dual drying air path design of a high-temperature drying layer and a thermal energy circulation layer, thereby realizing the thermal energy circulation drying operation of the grain with reversing air intake. Afterwards, the waste heat of the hot air is fully utilized to preheat the grain to be dried in the raw material tower, thereby saving energy and reducing emissions, improving grain drying efficiency, and ensuring grain quality.

[0039] like Figure 3 As shown, in a preferred embodiment, it also includes: an elevator II 90, whose lower end is connected to the discharge port of the drying tower, and the upper end of the elevator II is connected to the feed port of the drying tower. The elevator II is used to lift the grain at the bottom of the drying tower to the top of the drying tower, and if necessary, further dry the grain.

[0040] like Figure 4As shown, in a preferred embodiment, it also includes: a partition 501, which is horizontally arranged in the air guide cover to divide the air guide cover into an upper air inlet cavity and a lower air outlet cavity, a plurality of air outlet ports I are arranged in the air inlet cavity, and a plurality of air inlet ports II are arranged in the air outlet cavity; a partition through hole 502, which is arranged on the partition to connect the air inlet cavity and the air outlet cavity; a one-way valve 503, which is arranged at the partition through hole; a filter 504, which is arranged in the air inlet cavity and is arranged near the air hole; a hot air replenishment pipe 505, whose air inlet end is connected to the air outlet cavity, and the hot air flow rate of the hot air replenishment pipe is less than half of the hot air flow rate of the plurality of air inlets II; a one-way valve II 506, which is arranged on the hot air replenishment pipe.

[0041] In this solution, the partition separates the air hood into an air inlet cavity and an air outlet cavity, so that the hot air can quickly enter the heat energy circulation layer, and cooperates with the filter to perform preliminary dehumidification and dust removal on the hot air after the first drying of the grain, ensuring that the hot air brings out more moisture in the heat energy circulation layer and obtains a better drying effect. The hot air supplementary pipe is used to supplement a part of the high-temperature hot air when necessary to ensure the drying temperature of the heat energy circulation layer.

[0042] In a preferred embodiment, the hot air flow rate of the multiple air inlet pipes Ⅰ is greater than the hot air flow rate at one end of the multiple angular boxes Ⅰ; the air inlet volume at one end of the multiple angular boxes Ⅰ is greater than the hot air flow rate of the hot air supplementary pipe.

[0043] like Figure 5 As shown, in a preferred embodiment, it also includes: a filter II 703, whose air inlet is connected to the exhaust port of the raw material tower, and the air outlet of the filter II is connected to multiple air inlets IV of the slow-heating layer; a baffle 601, which is inclined between the thermal energy circulation layer and the slow-heating layer; a grain drop port, which is opened on the baffle and is arranged near the edge of the baffle; multiple air inlet pipes IV 602, which are evenly spaced and arranged in the slow-heating layer, and one end of the multiple air inlet pipes IV is connected to the multiple air inlets IV, and the other end of the multiple air inlet pipes IV is closed, and multiple jet holes IV are arranged on the tube wall of any air inlet pipe IV of the multiple air inlet pipes IV; multiple air outlets IV 603, which are opened on the side wall of the slow-heating layer, and the multiple air outlets IV are not connected to the multiple air inlet pipes IV, and the multiple air outlets IV are opened on the side wall of the drying tower away from the grain drop port. In this scheme, filter II is used to remove dust and moisture from the air after preheating and cooling, and then cooperates with multiple air intake pipes IV to ventilate and cool the slow cooling layer, making full use of wind energy and avoiding waste of wind energy. There is no need to set up other cooling equipment, thus saving energy and reducing emissions.

[0044] like Figure 6As shown, in a preferred embodiment, multiple angular boxes I are arranged in at least three rows distributed vertically, and in the vertical direction, multiple angular boxes I adjacent to each other are staggered; multiple angular boxes I are mainly used to fully disperse the grain just entering the drying tower, and staggered arrangement can obtain better dispersion effect; the number of multiple air inlet pipes I is less than or equal to the number of multiple angular boxes I; multiple angular boxes II are arranged in at least two rows distributed vertically, and in the vertical direction, multiple angular boxes II adjacent to each other are staggered; multiple angular boxes II are also used to disperse the grain for further drying treatment, and the number of multiple air inlet pipes II is less than or equal to the number of multiple angular boxes II.

[0045] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A thermal energy circulation type grain drying device, characterized in that: include: A drying tower, comprising a high-temperature drying layer, which is arranged near the top of the drying tower; A plurality of air inlet pipes I are evenly spaced and laterally arranged at the bottom of the high-temperature drying layer, one end of the plurality of air inlet pipes I is connected to an external hot air pipe, and the other end of the plurality of air inlet pipes I is sealed and fixed to the inner wall of the drying tower, and a plurality of jet holes I are arranged on the pipe wall of any of the plurality of air inlet pipes I; a plurality of angular boxes I are evenly spaced and laterally arranged at the top of the high-temperature drying layer, one end of the plurality of angular boxes I is connected to an external hot air pipe, and the other end of the plurality of angular boxes I is connected to a plurality of air outlets I on the side wall of the drying tower, and the plurality of angular boxes I are connected to the plurality of The air inlet pipes I are arranged in parallel with each other; the heat energy circulation layer is arranged in the drying tower, and the heat energy circulation layer is arranged below the high-temperature drying layer; the heat energy circulation layer includes a plurality of air inlet pipes II, which are evenly spaced and laterally arranged at the bottom of the heat energy circulation layer, one end of the plurality of air inlet pipes II is connected to a plurality of air inlets II on the side wall of the drying tower, the other end of the plurality of air inlet pipes II is sealed and fixed to the inner side wall of the drying tower, and the plurality of air outlets I and the plurality of air inlets II are located on the same side wall of the drying tower; a plurality of jet holes II are arranged on the pipe wall of any air inlet pipe II of the plurality of air inlet pipes II; A plurality of angular boxes II are evenly spaced and arranged on the top of the heat energy circulation layer, and one end of the plurality of angular boxes II is sealed and fixed to the inner wall of the drying tower, and the other end of the plurality of angular boxes II is connected to the plurality of air outlets III on the side wall of the drying tower, and the plurality of angular boxes II and the plurality of air inlet pipes II are arranged in parallel with each other; an air guide hood is a rectangular hollow hood body, and the air guide hood is buckled on the plurality of air outlets I and the plurality of air inlet ports II; a slow-release layer is arranged below the heat energy circulation layer; A raw material tower is arranged on one side of a drying tower; a plurality of air inlet pipes III are evenly spaced and laterally arranged in the raw material tower, one end of the plurality of air inlet pipes III is connected to a plurality of air outlets III through a pipeline, the other end of the plurality of air inlet pipes III is closed, and a plurality of air jet holes III are arranged on the pipe wall of any air inlet pipe III of the plurality of air inlet pipes III; an exhaust port is arranged at the top of the raw material tower; an elevator, the lower end of which is connected to a discharge port at the bottom of the raw material tower, and the discharge end of the elevator is connected to a feed port of the drying tower.

2. The heat energy circulation type grain drying device according to claim 1, characterized in that: Also includes: The lower end of the elevator II is connected to the discharge port of the drying tower, and the upper end of the elevator II is connected to the feed port of the drying tower.

3. The heat energy circulation type grain drying device according to claim 1, characterized in that: Also includes: A partition plate is transversely arranged in the air guide cover to divide the air guide cover into an upper air inlet cavity and a lower air outlet cavity, a plurality of air outlet ports I are arranged in the air inlet cavity, and a plurality of air inlet ports II are arranged in the air outlet cavity; a partition plate through hole is arranged on the partition plate to connect the air inlet cavity and the air outlet cavity; a one-way valve is arranged at the partition plate through hole; A filter is arranged in the air inlet cavity and close to the air vent; A hot air replenishment pipe, the air inlet end of which is connected to the air outlet cavity, and the hot air flow rate of the hot air replenishment pipe is less than half of the hot air flow rate of the plurality of air inlets II; One-way valve II is arranged on the hot air supply pipe.

4. The heat energy circulation type grain drying device according to claim 3, characterized in that: The hot air flow rate of the plurality of air inlet pipes Ⅰ is greater than the hot air flow rate of one end of the plurality of angular boxes Ⅰ; The air intake at one end of the plurality of angular boxes I is greater than the hot air flow rate of the hot air replenishment pipe.

5. The heat energy circulation type grain drying device according to claim 1, characterized in that: Also includes: The air inlet of the filter II is connected to the exhaust port of the raw material tower, and the air outlet of the filter II is connected to the multiple air inlets IV of the slow-release layer; The baffle is obliquely arranged between the heat energy circulation layer and the slow-release layer; the grain drop opening is opened on the baffle and is arranged close to the edge of the baffle; A plurality of air intake pipes IV are evenly spaced and arranged in the slow-release layer, one end of the plurality of air intake pipes IV is connected to a plurality of air intake ports IV, the other end of the plurality of air intake pipes IV is closed, and a plurality of air injection holes IV are arranged on the pipe wall of any air intake pipe IV of the plurality of air intake pipes IV; A plurality of air outlets IV are arranged on the side wall of the slow-release layer, and the plurality of air outlets IV are not interconnected with the plurality of air inlet pipes IV. The plurality of air outlets IV are arranged on the side wall of the drying tower away from the grain drop port.

6. The heat energy circulation type grain drying device according to claim 1, characterized in that: The plurality of angular boxes I are arranged in at least three rows distributed vertically, and in the vertical direction, the plurality of angular boxes I adjacent to each other are staggered; the number of the plurality of air intake pipes I is less than or equal to the number of the plurality of angular boxes I; The multiple angular boxes II are arranged in at least two rows distributed vertically, and in the vertical direction, the multiple angular boxes II adjacent to each other are staggered; the number of the multiple air intake pipes II is less than or equal to the number of the multiple angular boxes II.

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