Drying system

Abstract

The utility model relates to the field of grain processing, in particular to a drying system. The drying system comprises a drying tower, an air supply pipeline, and a condenser, a steam heat exchanger and a fan which are sequentially arranged on the air supply pipeline in the air supply direction of the air supply pipeline. The drying tower is provided with an air inlet and an air outlet. The air supply pipeline communicates with the air inlet. According to the drying system, the condenser and the steam heat exchanger are sequentially arranged in the air supply direction of the air supply pipeline to heat the fresh air, so that the low-temperature and low-humidity fresh air is converted into high-temperature and low-humidity gas. High-temperature and low-humidity gas is guided by the fan to enter the drying tower through the air inlet to dry materials in the drying tower. And after drying is completed, the high-temperature and low-humidity gas is converted into low-temperature and high-humidity gas and exhausted through the air outlet. Therefore, the drying system can heat the fresh air, so that the materials are dried, the materials are prevented from mildewing, and the loss of the materials is reduced.

Description

Technical Field

[0001] The utility model relates to the field of grain processing, in particular to a drying system. Background Art

[0002] Grain drying is an important link after grain production and an extremely important condition for safe grain storage. Newly harvested grain is huge in quantity and contains a lot of water. If the grain is not dried in time, it is easy to cause grain mold and thus cause losses. Utility Model Content

[0003] The utility model aims to provide a drying system, which can dry materials, thereby reducing the mildew of the materials and reducing the loss of the materials.

[0004] The utility model provides a drying system, comprising:

[0005] A drying tower, wherein the drying tower is provided with an air inlet and an air outlet;

[0006] an air supply duct, the air supply duct being connected to the air inlet; and

[0007] A condenser, a steam heat exchanger and a fan are sequentially arranged on the air supply duct along the air supply direction of the air supply duct.

[0008] In an optional embodiment, the drying system further includes an exhaust duct, which is connected to the air outlet.

[0009] In an optional embodiment, the drying system further includes a dust collector and an evaporator which are sequentially arranged in the exhaust duct along the exhaust direction of the exhaust duct.

[0010] In an optional embodiment, the drying system further includes a gas pipeline and a liquid pipeline; both ends of the gas pipeline are respectively connected to the condenser and the evaporator; and both ends of the liquid pipeline are respectively connected to the condenser and the evaporator.

[0011] In an optional embodiment, the drying system further includes a gas-liquid separator and a compressor which are sequentially arranged in the gas pipeline along the gas flow direction of the gas pipeline.

[0012] In an optional embodiment, the drying system further includes a throttle valve disposed on the liquid pipeline.

[0013] In an optional embodiment, the drying system further includes a temperature sensor, and the temperature sensor is disposed at the connection point between the air supply duct and the air inlet.

[0014] In an optional embodiment, the drying system further includes a control module, and the control module is electrically connected to the sensor and the fan.

[0015] In an optional embodiment, the air inlet and the air outlet are respectively located on two opposite sides of the drying tower.

[0016] In an optional embodiment, the height of the air inlet is greater than the height of the air outlet.

[0017] The beneficial effects of the embodiments of the utility model include:

[0018] The drying system comprises a drying tower, an air supply duct, and a condenser, a steam heat exchanger and a fan which are sequentially arranged in the air supply duct along the air supply direction of the air supply duct. The drying tower is provided with an air inlet and an air outlet. The air supply duct is connected to the air inlet.

[0019] The drying system heats the fresh air by sequentially arranging a condenser and a steam heat exchanger along the air supply direction of the air supply duct, thereby converting the low-temperature and low-humidity fresh air into high-temperature and low-humidity gas. The high-temperature and low-humidity gas enters the drying tower through the air inlet under the guidance of the fan to dry the materials in the drying tower. After the drying is completed, the high-temperature and low-humidity gas is converted into low-temperature and high-humidity gas and discharged through the air outlet. Thus, the drying system can heat the fresh air, thereby drying the materials, preventing the materials from becoming moldy, and reducing the loss of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a drying system provided in an embodiment of the utility model.

[0022] Icon: 100-drying system; 1-drying tower; 2-air supply duct; 3-condenser; 4-steam heat exchanger; 5-fan; 6-exhaust duct; 7-dust collector; 8-evaporator; 9-gas pipeline; 10-liquid pipeline; 11-gas-liquid separator; 12-compressor; 13-throttle valve; 14-sensor; 15-control module. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Please refer to Figure 1 , Figure 1The present invention provides a structural schematic diagram of a drying system 100. The drying system 100 includes a drying tower 1, an air supply duct 2, and a condenser 3, a steam heat exchanger 4, and a fan 5 sequentially arranged in the air supply duct 2 along the air supply direction of the air supply duct 2. The drying tower 1 is provided with an air inlet and an air outlet, and materials are placed in the drying tower 1. The air supply duct 2 is connected to the air inlet.

[0030] Specifically, the condenser 3 is provided with a fresh air inlet and a hot air outlet, and the low-temperature and low-humidity fresh air enters from the fresh air inlet, and the condenser 3 heats the fresh air to convert the fresh air into medium-temperature and low-humidity gas. Subsequently, the medium-temperature and low-humidity gas is discharged through the hot air outlet.

[0031] The medium temperature and low humidity gas moves along the air supply direction under the guidance of the air supply duct 2, and then flows through the steam heat exchanger 4. The drying system 100 uses the steam heat exchanger 4 to perform secondary heating on the fresh air, so that the medium temperature and low humidity gas is converted into high temperature and low humidity gas.

[0032] Finally, the high-temperature and low-humidity gas enters the drying tower 1 through the air inlet of the drying tower 1 under the guidance of the fan 5, and dries the materials contained in the drying tower 1. After the drying is completed, the gas is discharged from the air outlet.

[0033] It should be noted that, in this embodiment, the material placed in the drying container is newly harvested grain, which has too much moisture and needs to be dried to prevent the grain from becoming moldy and reduce grain loss.

[0034] Furthermore, in this embodiment, the steam heat exchanger 4 heats the medium-temperature and low-humidity gas by isolated indirect heating. Therefore, the steam heat exchanger 4 only heats the fresh air, and the steam will not mix with the medium-temperature and low-humidity gas, thereby not affecting the humidity of the gas.

[0035] For further information, please refer to Figure 1 The drying system 100 further includes an exhaust duct 6, which is connected to the air outlet.

[0036] After drying, the high temperature and low humidity gas is converted into medium temperature and high humidity gas. The drying system 100 is provided with an exhaust duct 6 to guide the medium temperature and high humidity gas to move along the exhaust direction of the exhaust duct 6, thereby facilitating the collection of the medium temperature and high humidity gas discharged from the drying tower 1.

[0037] According to the above structure settings, please refer to Figure 1 In this embodiment, the drying system 100 further includes a dust collector 7 and an evaporator 8 which are sequentially arranged in the exhaust duct 6 along the exhaust direction of the exhaust duct 6 .

[0038] Specifically, after the drying tower 1 discharges the medium-temperature and high-humidity gas through the air outlet, the medium-temperature and high-humidity gas moves along the exhaust direction and flows through the dust collector 7. Since part of the grain and impurities will flow out of the drying tower 1 and enter the exhaust duct 6 during the process of the gas flowing through the drying tower 1, the drying system 100 filters the grain and impurities entering the exhaust duct 6 by setting the dust collector 7.

[0039] After the dust collector 7 filters the grain and impurities in the exhaust duct 6 , the medium-temperature and high-humidity gas continues to move in the exhaust direction, thereby flowing through the evaporator 8 .

[0040] The evaporator 8 is provided with a hot air inlet and a cold air outlet. The medium-temperature and high-humidity gas enters the evaporator 8 through the hot air inlet, and the evaporator 8 cools the medium-temperature and high-humidity gas to convert the medium-temperature and high-humidity gas into low-temperature and high-humidity gas. Subsequently, the low-temperature and high-humidity gas is discharged through the cold air outlet.

[0041] For further information, please refer to Figure 1 The drying system 100 further includes a gas pipeline 9 and a liquid pipeline 10; both ends of the gas pipeline 9 are respectively connected to the condenser 3 and the evaporator 8; both ends of the liquid pipeline 10 are respectively connected to the condenser 3 and the evaporator 8.

[0042] Specifically, the condenser 3 includes a first inlet and a first outlet, and the evaporator 8 includes a second inlet and a second outlet. Both ends of the gas pipeline 9 are respectively connected to the first inlet and the second outlet. Both ends of the liquid pipeline 10 are respectively connected to the first outlet and the second inlet.

[0043] The gas pipeline 9 contains a gaseous refrigerant flowing from the second outlet to the first inlet. The liquid pipeline 10 contains a liquid refrigerant flowing from the first outlet to the second inlet. The condenser 3 is used to convert the gaseous refrigerant into a liquid refrigerant, and the evaporator 8 is used to convert the liquid refrigerant into a gaseous refrigerant.

[0044] It can be understood that when the gaseous refrigerant enters the condenser 3 through the first inlet, the gaseous refrigerant comes into contact with the low-temperature and low-humidity fresh air in the condenser 3. The condenser 3 condenses the gaseous refrigerant to transform the gaseous refrigerant into liquid refrigerant, thereby causing the refrigerant to release heat in the process of condensation. The fresh air is transformed into medium-temperature and low-humidity gas after absorbing the heat released by the refrigerant.

[0045] When the liquid refrigerant enters the evaporator 8 through the second inlet, the liquid refrigerant contacts the medium-temperature and high-humidity gas, and the liquid refrigerant absorbs heat from the medium-temperature and high-humidity gas, thereby causing the liquid refrigerant to evaporate and transform into a gaseous refrigerant.

[0046] Therefore, by setting up a circulation flow of refrigerant between the condenser 3 and the evaporator 8, the fresh air can be heated and the heat remaining in the medium-temperature and high-humidity gas in the exhaust duct 6 can be recovered, thereby saving costs and reducing the energy consumption of the drying system 100.

[0047] According to the above structure settings, please refer to Figure 1 In this embodiment, the drying system 100 further includes a gas-liquid separator 11 and a compressor 12 which are sequentially arranged in the gas pipeline 9 along the gas flow direction of the gas pipeline 9 .

[0048] It should be noted that the gas flow direction is the direction of the gaseous refrigerant from the second outlet to the first inlet flow channel.

[0049] Since the liquid refrigerant does not completely evaporate into a gaseous state after evaporating in the evaporator 8, the refrigerant flowing out through the second outlet is a gas-liquid mixture. The gas-liquid mixed refrigerant first flows through the gas-liquid separator 11, which separates the gaseous refrigerant from the liquid refrigerant and transports the gaseous refrigerant to the compressor 12. The compressor 12 is used to compress the gaseous refrigerant, so that when the compressed gaseous refrigerant condenses in the condenser 3, it can generate more heat to heat the fresh air.

[0050] Based on the above, please refer to Figure 1 In this embodiment, the drying system 100 further includes a throttle valve 13 disposed on the liquid pipeline 10. The drying system 100 controls the flow rate of the liquid refrigerant by disposing the throttle valve 13, so that the flow rate of the liquid refrigerant can be adjusted according to the temperature of the medium-temperature and high-humidity gas discharged from the drying tower 1.

[0051] If the temperature of the medium-temperature and high-humidity gas is high, the flow rate of the liquid refrigerant is increased, thereby improving the efficiency of heat recovery. If the temperature of the medium-temperature and high-humidity gas is low, the flow rate of the liquid refrigerant is reduced, thereby reducing the proportion of the liquid refrigerant in the gas-liquid mixture discharged from the second outlet.

[0052] For further information, please refer to Figure 1 The drying system 100 further includes a temperature sensor 14, which is disposed at the connection point between the air supply duct 2 and the air inlet, so as to detect the temperature of the high-temperature and low-humidity gas passing through the air inlet in real time.

[0053] It should be noted that, in other embodiments, a humidity sensor 14 may be further provided at the connection between the air supply duct 2 and the air inlet to detect the humidity of the high-temperature and low-humidity gas.

[0054] In addition, the drying system 100 also includes a control module 15, which is electrically connected to the sensor 14 and the fan 5, and can receive temperature information detected by the temperature sensor 14, and adjust the flow rate of the fan 5 according to the temperature information to adjust the flow of high-temperature and low-humidity gas entering the drying tower 1, thereby improving the drying effect of the newly harvested grain, avoiding mildew of the grain, and reducing grain loss.

[0055] For further information, please refer to Figure 1 The air inlet and the air outlet are respectively located on two opposite sides of the drying tower 1, thereby increasing the residence time of the gas and improving the drying effect.

[0056] It is understandable that since the density of high-temperature gas is lower than that of low-temperature gas, the high-temperature, low-humidity gas will move vertically downward when it is transformed into medium-temperature, high-humidity gas. In order to allow the high-temperature, low-humidity gas to fully contact the newly harvested grain, the height of the air inlet should be greater than the height of the air outlet.

[0057] In summary, the drying system 100 includes a drying circuit and a circulation circuit, wherein fresh air entering from the outside flows in the drying circuit, and the refrigerant flows in the circulation circuit.

[0058] The drying circuit includes a drying tower 1, an air supply duct 2, a condenser 3, a steam heat exchanger 4, a fan 5, an exhaust duct 6, a dust collector 7 and an evaporator 8. The fresh air flows through the air supply duct 2, the condenser 3, the steam heat exchanger 4, the fan 5, the drying tower 1, the exhaust duct 6, the dust collector 7 and the evaporator 8 in sequence.

[0059] Fresh air enters the condenser 3 from the fresh air inlet, and the condenser 3 heats the low-temperature and low-humidity fresh air to convert it into medium-temperature and low-humidity gas, which is discharged from the hot air outlet. Subsequently, the medium-temperature and low-humidity gas is heated by the steam heat exchanger 4 and converted into high-temperature and low-humidity gas.

[0060] The fan 5 moves high-temperature, low-humidity gas in and out of the drying tower 1, and the high-temperature, low-humidity gas enters the drying platform from the air inlet to dry the newly harvested grain in the drying tower 1. During the drying process, the high-temperature, low-humidity gas is converted into medium-temperature, high-humidity gas and discharged from the air outlet.

[0061] After entering the exhaust duct 6, the medium-temperature and high-humidity gas first flows through the dust collector 7, which is used to filter out the food and impurities entering the exhaust duct 6. Subsequently, the medium-temperature and high-humidity gas enters the evaporator 8 through the hot air inlet, and the evaporator 8 cools the medium-temperature and high-humidity gas to convert the medium-temperature and high-humidity gas into low-temperature and high-humidity gas, which is then discharged from the cold air outlet.

[0062] Thus, the drying system 100 dries the newly harvested grain in the drying tower 1 through the drying circuit, thereby preventing the grain from becoming moldy and further reducing the loss of grain.

[0063] The circulation loop includes a condenser 3, an evaporator 8, a gas pipeline 9, a liquid pipeline 10, a gas-liquid separator 11, a compressor 12, and a throttle valve 13. The refrigerant flows through the condenser 3, the liquid pipeline 10, the throttle valve 13, the evaporator 8, the gas-liquid separator 11, and the compressor 12 in sequence.

[0064] The gaseous refrigerant enters the condenser 3 through the first inlet, and the condenser 3 condenses the gas to convert the gaseous refrigerant into liquid refrigerant, and discharges the liquid refrigerant to the liquid pipeline 10 through the first outlet.

[0065] The liquid refrigerant moves from the first outlet to the second inlet through the liquid pipe 10, thereby entering the evaporator 8. The liquid refrigerant absorbs heat in the evaporator 8 to evaporate, thereby changing into a gas-liquid mixture, and then exits the evaporator 8 through the second outlet and moves to the gas-liquid separator 11.

[0066] The gas-liquid separator 11 separates the gaseous refrigerant and the liquid refrigerant in the gas-liquid mixture, and delivers the gaseous refrigerant to the compressor 12. The compressor 12 compresses the gaseous refrigerant, and the compressed gaseous refrigerant flows to the condenser 3 through the gas pipeline 9, thereby forming a cycle.

[0067] Therefore, the drying system 100 recovers the residual heat energy in the medium-temperature and high-humidity gas discharged from the drying circuit through the circulation loop, thereby reducing energy consumption and saving costs.

[0068] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drying system, characterized in that: include: A drying tower (1), the drying tower (1) being provided with an air inlet and an air outlet; an air supply duct (2), the air supply duct (2) being connected to the air inlet; and A condenser (3), a steam heat exchanger (4) and a fan (5) are sequentially arranged on the air supply duct (2) along the air supply direction of the air supply duct (2).

2. The drying system according to claim 1, characterized in that: The drying system (100) further comprises an exhaust duct (6), wherein the exhaust duct (6) is in communication with the air outlet.

3. The drying system according to claim 2, characterized in that: The drying system (100) further comprises a dust collector (7) and an evaporator (8) which are sequentially arranged in the exhaust duct (6) along the exhaust direction of the exhaust duct (6).

4. The drying system according to claim 3, characterized in that: The drying system (100) further comprises a gas pipeline (9) and a liquid pipeline (10); the two ends of the gas pipeline (9) are respectively connected to the condenser (3) and the evaporator (8); the two ends of the liquid pipeline (10) are respectively connected to the condenser (3) and the evaporator (8).

5. The drying system according to claim 4, characterized in that: The drying system (100) further comprises a gas-liquid separator (11) and a compressor (12) which are sequentially arranged on the gas pipeline (9) along the gas flow direction of the gas pipeline (9).

6. The drying system according to claim 4, characterized in that: The drying system (100) further comprises a throttle valve (13) arranged on the liquid pipeline (10).

7. The drying system according to any one of claims 1 to 6, characterized in that: The drying system (100) further comprises a temperature sensor (14), wherein the temperature sensor (14) is arranged at the connection point between the air supply duct (2) and the air inlet.

8. The drying system according to claim 7, characterized in that: The drying system (100) further comprises a control module (15), wherein the control module (15) is electrically connected to the temperature sensor (14) and the fan (5).

9. The drying system according to any one of claims 1 to 6, characterized in that: The air inlet and the air outlet are respectively located on two opposite sides of the drying tower (1).

10. The drying system according to claim 9, characterized in that: The height of the air inlet is greater than the height of the air outlet.

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