Drying equipment and system

Abstract

The utility model belongs to the technical field of drying, and particularly relates to drying equipment and system. The drying equipment comprises a rack, a dryer module and a plurality of air supply modules. The dryer module is arranged above the rack and rotationally connected to the rack, the dryer module comprises a dryer and a plurality of moisture removal air ducts, and the multiple moisture removal air ducts are arranged on the top side of the dryer and arranged at intervals in the X direction; and the multiple air supply modules are arranged on one side of the dryer module in the Y direction and arranged at intervals in the X direction, the air supply modules and the moisture removal air ducts are connected in a one-to-one correspondence mode, all the air supply modules are connected to the dryer, and part or all of the air in the moisture removal air ducts can flow back into the dryer. According to the drying equipment provided by the invention, the air supply module is connected with the moisture removal air duct, so that the air supply module can guide the tail gas circulating in the moisture removal air duct back into the drying machine, energy waste is avoided, the cost is reduced, the purpose of humidity control can be achieved by adjusting the amount of the tail gas, and the drying equipment is particularly suitable for drying food such as kelp.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of drying, and in particular relates to a drying device and system. BACKGROUND

[0002] Research has found that drying hot air temperature and relative humidity have a significant influence on the moisture migration and quality formation of foods such as shiitake mushrooms, carrots and kelp, and proper humidity control during hot air drying helps to maintain the microstructure of the food and obtain better post-drying quality.

[0003] A common way of existing hot air drying is to use hot air drying, and the hot air temperature during drying is usually 110-130 DEG C. The tail gas is directly discharged into the atmosphere, especially in the later stage of the operation, the tail gas temperature is high, the energy utilization rate is low, and the resources are wasted seriously, and the humidity control cannot be realized through the tail gas. CONTENT OF THE UTILITY MODEL

[0004] The application provides a drying device and system to solve the technical problems that the existing drying device cannot recycle and utilize tail gas, and cannot control humidity through tail gas.

[0005] According to one aspect of the application, a drying device is provided, which comprises a rack, a drying machine module and a plurality of air supply modules. The drying machine module is arranged above the rack and is rotationally connected to the rack. The drying machine module comprises a drying machine and a plurality of moisture exhaust air ducts. The plurality of moisture exhaust air ducts are arranged on the top side of the drying machine and are arranged along the X direction at intervals. The plurality of air supply modules are arranged on one side of the drying machine module along the Y direction and are arranged along the X direction at intervals. Each air supply module is connected to each moisture exhaust air duct one by one and is connected to the drying machine, and can return part or all of the gas in the moisture exhaust air duct to the drying machine.

[0006] In an optional scheme of the application, the air supply module comprises a recovery air duct, a gas mixing treatment module, a drying fan and a drying air duct. The gas mixing treatment module is connected to the moisture exhaust air duct through the recovery air duct, and the drying fan is connected to the drying machine through the drying air duct. The drying fan is connected to the gas mixing treatment module and can introduce the gas in the gas mixing treatment module into the drying machine.

[0007] In an optional scheme of the application, the gas mixing treatment module comprises, in the Z direction, a gas volume adjusting device, a heat exchanger and a mixed air chamber connected in sequence from top to bottom. The recovery air duct is connected to the gas volume adjusting device, and the drying fan is connected to the mixed air chamber.

[0008] In an optional scheme of the application, the air supply module further comprises a variable-diameter pipeline. The drying fan is connected to the mixed air chamber through the variable-diameter pipeline, and the variable-diameter pipeline is arranged in a tapered manner in the direction from the mixed air chamber to the drying fan.

[0009] In an optional aspect of the present application, the top side of the air volume adjusting device is formed with a return air inlet and a fresh air inlet, the return air duct is connected to the return air inlet, and the fresh air inlet is used to introduce ambient air.

[0010] In an optional aspect of the present application, the return air duct comprises a first return air duct section and a second return air duct section connected in sequence along the air flow direction; the second return air duct section is provided as a flexible duct and is located between the first return air duct section and the air mixing module.

[0011] In an optional aspect of the present application, the drying air duct comprises a first drying air duct section and a second drying air duct section connected in sequence along the air flow direction; the first drying air duct section is provided as a flexible duct and is located between the second drying air duct section and the drying air fan.

[0012] In an optional aspect of the present application, the dryer module further comprises a feeding mechanism, and the dryer is formed with an inlet and an outlet at the two ends in the X direction respectively; the feeding mechanism is arranged at the X direction side of the dryer with the inlet and is connected to the inlet of the dryer.

[0013] In an optional aspect of the present application, the top side of the rack is formed with a horizontal support surface and an inclined support surface, and the inclined support surface extends obliquely downward from the X direction side of the horizontal support surface; the drying equipment further comprises a lifting mechanism arranged below the horizontal support surface of the rack, the lifting mechanism is connected to the dryer module and drives the dryer module to rotate, so as to switch the dryer module between the horizontal state and the inclined state; in the horizontal state, the dryer module is in contact with the horizontal support surface and is separated from the inclined support surface; in the inclined state, the dryer module is in contact with the inclined support surface and is separated from the horizontal support surface.

[0014] According to another aspect of the present application, a drying system is provided, comprising a conveyor, a material collecting container, a control module and the above-mentioned drying equipment. The conveyor is used to convey materials and is arranged upstream of the feeding mechanism of the dryer module; the material collecting container is arranged downstream of the outlet of the dryer; the control module is configured to control the operation of the drying equipment and the conveyor according to the obtained information.

[0015] In summary, the drying equipment and system provided by the present application have at least the following beneficial effects:

[0016] In the drying equipment provided by the present application, the air supply module is connected to the moisture removal air duct, so that the air supply module can introduce the exhaust gas circulating in the moisture removal air duct back into the dryer, i.e. the exhaust gas discharged from the dryer is reused, thereby avoiding energy waste and reducing costs.

[0017] The tail gas is introduced back to the drying machine due to the high relative humidity and temperature of the tail gas in the drying machine, so that the humidity of the hot air used for drying can be regulated, and the humidity in the hot air drying process can be controlled, thus the drying equipment provided by the application is especially suitable for drying foods such as shiitake mushrooms, carrots and kelp, and is beneficial to maintaining the microstructure of the foods and ensuring the quality after drying. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed to be used in the description of the specific embodiments or prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0019] Figure 1 The schematic view of the drying equipment provided according to one of the embodiments of the present application from one perspective;

[0020] Figure 2 The schematic view of the drying equipment in the Figure 1 from another perspective;

[0021] Figure 3 The schematic view of the drying equipment in the Figure 1 from still another perspective;

[0022] Figure 4 The schematic view of the drying equipment in the Figure 1 from still another perspective.

[0023] The reference signs are as follows:

[0024] 100, drying equipment;

[0025] 10, rack; 11, horizontal support surface; 12, inclined support surface; 13, rotating shaft;

[0026] 20, drying machine module; 21, drying machine;

[0027] 22, moisture removal air duct; 221, moisture removal pipeline; 222, moisture removal fan;

[0028] 23, feeding mechanism;

[0029] 30, air supply module; 31, recovery air duct; 311, first recovery pipeline section; 312, second recovery pipeline section;

[0030] 32, air mixing treatment module; 321, air volume adjusting device; 3211, air volume adjusting mechanism; C1, air return inlet; C2, fresh air inlet; 322, heat exchanger; 323, air mixing chamber;

[0031] 33, drying fan; 34, drying air duct; 341, first drying air duct section; 342, second drying air duct section;

[0032] 35, variable diameter duct;

[0033] 40, lifting mechanism. DETAILED DESCRIPTION

[0034] In the present application, if the features with "first", "second" are used for the purpose of description, it should not be understood as indicating or implying relative importance or implying the number of the indicated technical features. The features with "first", "second" can explicitly or implicitly include at least one of the features with "first", "second". If the description of "multiple" appears, it generally means at least two, such as two, three, etc., unless otherwise specifically limited.

[0035] In the present application, unless otherwise specifically defined and limited, if the terms such as "mounting", "connecting", "connecting", "fixing" and the like appear, they should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the description of the present application, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present description and the features of the different embodiments or examples without contradiction.

[0037] In the present application, "X direction", "Y direction" and "Z direction" mentioned in the present application are based on the Cartesian coordinate system provided by the drying equipment 100 of the present application. The X direction and the Y direction define the horizontal direction, i.e. parallel to the ground direction, and the Z direction defines the vertical direction, i.e. perpendicular to the ground direction, which is the up-down direction.

[0038] Figure 1 The schematic diagram of the drying equipment 100 provided according to one embodiment of the present application from one perspective. Figure 2 The schematic diagram of the drying equipment 100 provided according to one embodiment of the present application from another perspective. Figure 1FIG. 2 is a schematic view of the drying equipment 100 in another perspective view. Please refer to FIG. 1 Figure 1 and Figure 2 The drying equipment 100 comprises a rack 10, a dryer module 20, and a plurality of air supply modules 30.

[0039] The dryer module 20 is arranged above the rack 10 and is rotationally connected to the rack 10. The dryer module 20 comprises a dryer 21 and a plurality of moisture exhaust air ducts 22. The plurality of moisture exhaust air ducts 22 are arranged on the top side of the dryer 21 and are spaced apart along the X direction.

[0040] The plurality of air supply modules 30 are arranged on one side of the dryer module 20 along the Y direction and are spaced apart along the X direction. Each air supply module 30 is connected to each moisture exhaust air duct 22 one by one and is connected to the dryer 21, and can return part or all of the gas in the moisture exhaust air duct 22 to the dryer 21.

[0041] In the embodiment, the dryer module 20 is mounted on the rack 10, the rack 10 provides support for the dryer module 20, and the dryer module 20 can rotate relative to the rack 10.

[0042] In an embodiment, the rack 10 is provided with a rotating shaft 13, and the dryer module 20 is rotationally connected to the rack 10 through the rotating shaft 13. Of course, it is not limited to this, for example, it can also be connected through a hinge pin to ensure the rotational freedom of the dryer module 20.

[0043] The dryer module 20 at least has the dryer 21 and the plurality of moisture exhaust air ducts 22. The dryer 21 is the main component for containing and drying materials. The dryer 21 cooperates with the air supply module 30 to realize the hot air drying mode, so that the tail gas with relatively high humidity is generated. The tail gas in the dryer 21 can be led out through the moisture exhaust air duct 22.

[0044] The number of the moisture exhaust air ducts 22 is at least two and is mounted on the top side of the dryer 21. It should be noted that the top side of the dryer 21 is formed with a plurality of tail gas outlets spaced apart along the X direction to cooperate with the moisture exhaust air ducts 22, so as to ensure the efficiency of leading out the tail gas.

[0045] In an embodiment, the moisture exhaust air duct 22 comprises a moisture exhaust pipeline 221 and a moisture exhaust fan 222. The moisture exhaust pipeline 221 is connected to the dryer 21, and the moisture exhaust fan 222 is arranged in the moisture exhaust pipeline 221 to extract the gas from the dryer 21. In a specific application, one end of the moisture exhaust pipeline 221 is connected to the tail gas outlet on the top side of the dryer 21, and the other end is connected to an external pipeline. Under the action of the moisture exhaust fan 222, the tail gas in the dryer 21 can be introduced into the external pipeline through the moisture exhaust pipeline 221 and discharged.

[0046] In a specific application, in order to avoid external gas entering the dehumidification pipeline 221 in reverse through the dehumidification fan 222, a check valve is installed at the outlet of the dehumidification fan 222, through which only exhaust gas can be discharged, and external gas cannot enter in reverse.

[0047] In an embodiment, the dryer 21 is a drum dryer, which is a device that makes full contact between materials and hot air through a rotating cylinder. As an existing device, it will not be described in detail. Of course, it is not limited thereto, and for example, a tunnel dryer, a flap dryer, a mesh belt dryer, etc. can also be used.

[0048] In the embodiment, the number of the air supply module 30 is equal to that of the dehumidification air duct 22, and each dehumidification air duct 22 is connected to one air supply module 30, which can provide hot air for the dryer 21.

[0049] In particular, the air supply module 30 is also connected to the dehumidification air duct 22, so that the air supply module 30 can guide the exhaust gas flowing in the dehumidification air duct 22 back to the dryer 21, i.e., the exhaust gas discharged from the dryer 21 is reused, thereby avoiding energy waste and reducing costs.

[0050] Since the relative humidity and temperature of the exhaust gas in the dryer 21 are high, guiding the exhaust gas back to the dryer 21 can control the humidity of the hot air used for drying and control the humidity in the drying process of the hot air. Therefore, the drying equipment provided by the present application is particularly suitable for drying foods such as shiitake mushrooms, carrots, and kelp, which is beneficial to maintaining the microstructure of the foods and ensuring the quality after drying.

[0051] Figure 3 For Figure 1 a schematic view of the drying equipment 100 from another perspective. Please refer to Figure 3 The top side of the rack 10 is formed with a horizontal support surface 11 and an inclined support surface 12, which extends downward from the X side of the horizontal support surface 11.

[0052] The drying equipment 100 further comprises a lifting mechanism 40, which is arranged on the rack 10 and below the horizontal support surface 11. The lifting mechanism 40 is connected to the dryer module 20 and drives the dryer module 20 to rotate, so as to switch the dryer module 20 between the horizontal state and the inclined state.

[0053] In the horizontal state, the dryer module 20 is in contact with the horizontal support surface 11 and is separated from the inclined support surface 12; in the inclined state, the dryer module 20 is in contact with the inclined support surface 12 and is separated from the horizontal support surface 11.

[0054] In the embodiment, the top side of the rack 10 has the horizontal support surface 11 and the inclined support surface 12, and the inclined support surface 12 is in contact with the X side of the horizontal support surface 11.

[0055] Please refer to Figure 3 , the rack 10 can be spliced by two parts, the rack 10 includes a rectangular section and a right trapezoidal section, the rectangular section and the right trapezoidal section are spliced in the X direction, and the top side of the rectangular section forms a horizontal support surface 11, and the top side of the right trapezoidal section forms an inclined support surface 12.

[0056] In an embodiment, the rack 10 is spliced by a plurality of beam members, which can be profiles, pipes, etc. That is, the rectangular section and the right trapezoidal section are spliced by beam members through processes such as screwing, riveting, and welding. In an embodiment, the acute angle formed between the horizontal support surface 11 and the inclined support surface 12 is 5° to 10°.

[0057] In the illustrated embodiment, the dryer module 20 is rotationally connected to the rack 10 by a rotating shaft 13 located at the intersection of the horizontal support surface 11 and the inclined support surface 12, which extends along the Y direction, that is, the dryer module 20 has the freedom to rotate around the Y axis.

[0058] In this embodiment, the drying apparatus 100 also has a lifting mechanism 40, which is installed on the rack 10 and located below the horizontal support surface 11. The lifting mechanism 40 is also connected to the dryer module 20 to drive the dryer module 20 to rotate and switch between the horizontal state and the inclined state.

[0059] It should be noted that in the horizontal state, the dryer module 20 is in contact with the horizontal support surface 11, that is, supported by the horizontal support surface 11. In the inclined state, the dryer module 20 is in contact with the inclined support surface 12, that is, supported by the inclined support surface 12.

[0060] In an embodiment, the lifting mechanism 40 should be arranged away from the rotating shaft 13, so that the moment of force formed by the lifting mechanism 40 on the dryer module 20 is larger, and accordingly the driving force required by the lifting mechanism 40 can be reduced.

[0061] In an embodiment, the lifting mechanism 40 is a screw lifting mechanism, which can be driven by a motor, a screw rod, a synchronous belt, etc. Of course, it is not limited to this, for example, a jack can also be used.

[0062] In an alternative embodiment, the dryer module 20 also includes a feeding mechanism 23, and the X-directional two ends of the dryer 21 form an inlet and an outlet. The feeding mechanism 23 is arranged on the X-directional side of the dryer 21 with the inlet and connected to the inlet of the dryer 21.

[0063] In this embodiment, the feeding mechanism 23 is connected to the inlet of the dryer 21, and the feeding mechanism 23 is used to introduce the material into the dryer 21, and the outlet of the dryer 21 is used for discharging.

[0064] In one embodiment, the feeding mechanism 23 is a screw conveyor, and the outlet of the screw conveyor is connected to the inlet of the drying machine 21.

[0065] In a further alternative embodiment, the air supply module 30 comprises a recovery air duct 31, a gas mixing treatment module 32, a drying air fan 33 and a drying air duct 34. The gas mixing treatment module 32 is connected to the moisture removal air duct 22 through the recovery air duct 31, and the drying air fan 33 is connected to the drying machine 21 through the drying air duct 34. The drying air fan 33 is connected to the gas mixing treatment module 32 and can introduce the gas in the gas mixing treatment module 32 into the drying machine 21.

[0066] In this embodiment, the exhaust gas entering the moisture removal air duct 22 can enter the gas mixing treatment module 32 through the recovery air duct 31. In a specific application, the gas mixing treatment module 32 is also connected to the external atmosphere.

[0067] The drying air fan 33 provides power for the gas flow entering the drying machine 21. The drying air fan 33 is connected to the gas mixing treatment module 32 and is connected to the drying machine 21 through the drying air duct 34. The drying air fan 33 can form a negative pressure in the operating condition, so that the exhaust gas in the moisture removal air duct 22 and the external atmosphere are mixed in the gas mixing treatment module 32, and then enter the drying machine 21 through the drying air duct 34 under the continuous action of the drying air fan 33.

[0068] In one embodiment, the drying air fan 33 is a centrifugal fan, but it is not limited thereto, for example, a blower, an induced draft fan, etc. can also be used.

[0069] In a further alternative embodiment, the gas mixing treatment module 32 comprises, from top to bottom in the Z direction, an air volume adjusting device 321, a heat exchanger 322 and a mixing chamber 323. The recovery air duct 31 is connected to the air volume adjusting device 321, and the drying air fan 33 is connected to the mixing chamber 323.

[0070] In this embodiment, the uppermost device in the gas mixing treatment module 32 is the air volume adjusting device 321, which is used to adjust the air volume. The heat exchanger 322 is located below the air volume adjusting device 321, which controls the temperature of the gas entering through the air volume adjusting device 321, and then mixes in the lowermost mixing chamber 323, and then is extracted through the drying air fan 33.

[0071] The recovery air duct 31 is connected to the air volume adjusting device 321, so that the exhaust gas flowing back to the drying machine 21 needs to pass through the air volume adjusting device 321 to control the air volume.

[0072] It can be understood that the heat exchanger 322 is a heat source functional component of the device. In an embodiment, a finned steam heat exchanger is used, and in order to increase the service life of the heat exchanger, the steam pipe and the fins are both made of stainless steel. The upper end of the heat exchanger 322 is connected to the air inlet, and the lower end is connected to the exhaust outlet.

[0073] In an alternative embodiment, the top side of the air volume adjusting device 321 is provided with a return air inlet C1 and a fresh air inlet C2, the return air duct 31 is connected to the return air inlet C1, and the fresh air inlet C2 is used to introduce ambient air.

[0074] The air volume adjusting device 321 includes an air volume adjusting mechanism 3211, which is used to open and close the return air inlet C1 and the fresh air inlet C2 to adjust the air volume.

[0075] In this embodiment, one end of the return air duct 31 is connected to the return air inlet C1, so that the exhaust gas in the dryer 21 can enter the downstream device through the return air inlet C1, and the ambient air, i.e. air, can enter the downstream device through the fresh air inlet C2. The air mixing and processing module 32 is mainly used to process the mixed gas of the exhaust gas and the air.

[0076] In an embodiment, the air volume adjusting device 321 includes a housing, the Z-direction two sides of the housing are open and provided with a partition plate, thereby separating the internal space of the housing into multiple air channels, and the top side of the air channels corresponds to the return air inlet C1 and the fresh air inlet C2.

[0077] In this embodiment, the air volume adjusting device 321 also has an air volume adjusting mechanism 3211, which can open and close the return air inlet C1 and the fresh air inlet C2. Here, opening and closing means that the air volume adjusting mechanism 3211 can adjust the opening degree of the return air inlet C1 and the fresh air inlet C2, thereby adjusting the air volume entering the corresponding inlet.

[0078] In an embodiment, the air volume adjusting mechanism 3211 includes a flip gate plate located at the return air inlet C1 and the fresh air inlet C2, and each flip gate plate can be driven to rotate by cooperating with one motor, i.e. one-to-one scheme; or all flip gate plates can be driven by cooperating with a transmission mechanism through one motor, i.e. one-to-many scheme. It should be understood that the rotation angle of the flip gate plate at the inlet can achieve air volume adjustment.

[0079] Further, the air volume adjusting mechanism 3211 is arranged to have a negative correlation between the opening degree of the return air inlet C1 and the opening degree of the fresh air inlet C2.

[0080] The negative correlation here means that when the opening of the return air inlet C1 is increased, the opening of the fresh air inlet C2 is decreased; when the opening of the return air inlet C1 is decreased, the opening of the fresh air inlet C2 is increased. In this way, the air volume of the return air inlet C1 and the air volume of the fresh air inlet C2 are negatively correlated.

[0081] Understandably, in this case, when the return air inlet C1 is closed, the opening of the fresh air inlet C2 is maximum, and when the opening of the return air inlet C1 is maximum, the fresh air inlet C2 is closed.

[0082] In the illustrated embodiment, the number of fresh air inlets C2 is 2, and they are located on both sides of the return air inlet C1 in the Y direction.

[0083] In some optional embodiments, the air supply module 30 further comprises a variable-diameter pipeline 35, and the drying fan 33 is connected to the air mixing chamber 323 via the variable-diameter pipeline 35, and the variable-diameter pipeline 35 is taperedly arranged in the direction from the air mixing chamber 323 to the drying fan 33.

[0084] In the present embodiment, the variable-diameter pipeline 35 is further provided between the drying fan 33 and the air mixing chamber 323, and the caliber of the variable-diameter pipeline 35 is gradually changed. Understandably, the direction from the air mixing chamber 323 to the drying fan 33 is the airflow direction, in other words, the variable-diameter pipeline 35 is taperedly arranged in the airflow direction. In this way, the gas entering the drying fan 33 is more concentrated.

[0085] In an embodiment, the variable-diameter pipeline 35 is funnel-shaped, with the wide end connected to the air mixing chamber 323 and the narrow section connected to the drying fan 33.

[0086] Figure 4 For Figure 1 is a schematic view of the drying equipment 100 from another perspective. Please refer to Figure 4 In some optional embodiments, the recovery air duct 31 comprises a first recovery pipeline section 311 and a second recovery pipeline section 312 connected in sequence along the airflow direction. The second recovery pipeline section 312 is arranged as a flexible pipeline and is located between the first recovery pipeline section 311 and the air mixing and processing module 32.

[0087] In the present embodiment, the recovery air duct 31 is spliced by the first recovery pipeline section 311 and the second recovery pipeline section 312, and the second recovery pipeline section 312 is a flexible pipeline, that is, the second recovery pipeline section 312 can be deformed, so that the recovery air duct 31 and the air mixing and processing module 32 are connected in a soft manner.

[0088] In this way, during the rotation of the dryer module 20, the second recovery pipeline section 312 can be deformed to adapt to the position change of the dryer module 20.

[0089] In an embodiment, the first recovery pipe section 311 is a rigid pipe and can be spliced by multiple pipe sections, the ends of which are formed with flanges for splicing.

[0090] In an embodiment, the second recovery pipe section 312 is made of waterproof and flame-retardant canvas, but is not limited thereto, for example, can also be made of corrugated pipe made of high-temperature resistant material, etc.

[0091] In some optional embodiments, the drying air duct 34 includes a first drying pipe section 341 and a second drying pipe section 342 connected in sequence along the airflow direction. The first drying pipe section 341 is arranged as a flexible pipe and is located between the second drying pipe section 342 and the drying fan 33.

[0092] In the embodiment, the drying air duct 34 is spliced by the first drying pipe section 341 and the second drying pipe section 342, and the first drying pipe section 341 is a flexible pipe, i.e., the first drying pipe section 341 can be deformed to adapt to the position change of the drying machine module 20.

[0093] In an embodiment, the second drying pipe section 342 is a rigid pipe and can be spliced by multiple pipe sections, the ends of which are formed with flanges for splicing.

[0094] In an embodiment, the first drying pipe section 341 is made of waterproof and flame-retardant canvas, but is not limited thereto, for example, can also be made of corrugated pipe made of high-temperature resistant material, etc.

[0095] It should be noted that for the flexible pipe section made of waterproof and flame-retardant canvas, the length thereof should meet the rotation requirement of the drying machine module 20.

[0096] In specific applications, the moisture exhaust pipe 221, the first recovery pipe section 311, the second drying pipe section 342, the shell of the air volume adjusting device 321, the shell of the heat exchanger 322, the shell of the air mixing chamber 323, and the variable-diameter pipe 35 are all designed with double-layer insulation, and filled with food-grade insulation material in the middle.

[0097] The drying equipment 100 provided by the present application can be applied to kelp drying, has the tail gas recovery function, and can recover part or all of the tail gas discharged by the drying machine 21. Since the tail gas temperature is relatively high, the energy required for reheating to the set drying temperature is reduced, achieving the purpose of saving energy and reducing cost.

[0098] In addition, the air volume of the return air and the air volume of the fresh air can be adjusted, thereby adjusting the relative humidity in the drying airflow, which helps to improve the quality indexes such as the microscopic structure characteristics of the kelp drying surface and the rehydration property during the drying operation.

[0099] It should be noted that the relative humidity refers to the percentage value of the actual water vapor density contained in the gas and the saturated water vapor density at the same temperature, which is not described in detail here.

[0100] Another aspect of the present application also provides a drying system, which comprises a conveyor (not shown in the figure), a material collecting container (not shown in the figure), a control module (not shown in the figure) and the drying device 100 described above.

[0101] The conveyor is used to convey the material and is arranged upstream of the feeding mechanism 23 in the dryer module 20. The material collecting container is arranged downstream of the outlet of the dryer 21. The control module is configured to control the drying device 100 and the conveyor according to the obtained information.

[0102] In the present embodiment, the conveyor is located upstream of the drying device 100, and the material collecting container is located downstream of the drying device 100. The conveyor is used to convey the material to be dried to the feeding port of the feeding mechanism 23 in the dryer module 20, and the material collecting container is used to collect the dried material discharged from the drying device 100.

[0103] The control module is used to control the drying device 100 and the conveyor, so that they can cooperate to complete the feeding process, and the drying device 100 can cooperate with the material collecting container to complete the discharging process.

[0104] In specific applications, the moisture removal fan 222 in the drying device 100, the drying fan 33, the air volume adjusting mechanism 3211, the dryer 21, the lifting mechanism 40 and the feeding mechanism 23 can all use motors as power sources. The control module is electrically connected to the motors in these devices to control the corresponding devices to work.

[0105] In an embodiment, the conveyor can use a belt conveyor, a chain plate conveyor, a vibrating conveyor, etc., which can be selected according to the requirements. In an embodiment, the material collecting container is a hopper or other container. In an embodiment, the control module uses a module constructed based on a programmable logic controller (PLC).

[0106] Although the embodiments of the present application have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A drying apparatus, characterized by, The dryer module (20) is arranged above the rack (10) and is rotationally connected to the rack (10), and the dryer module (20) comprises a dryer (21) and a plurality of moisture exhaust air ducts (22) arranged on the top side of the dryer (21) and spaced apart along the X direction. The air supply module (30) is arranged on one side of the dryer module (20) in the Y direction and is spaced apart along the X direction, each air supply module (30) is connected to each moisture exhaust air duct (22) one by one and is connected to the dryer (21), and can return part or all of the gas in the moisture exhaust air duct (22) to the dryer (21). The air supply module (30) comprises a recovery air duct (31), a gas mixing treatment module (32), a drying fan (33) and a drying air duct (34). The gas mixing treatment module (32) is connected to the moisture exhaust air duct (22) through the recovery air duct (31), and the drying fan (33) is connected to the dryer (21) through the drying air duct (34). The drying fan (33) is connected to the gas mixing treatment module (32) and can introduce the gas in the gas mixing treatment module (32) into the dryer (21).

2. The drying apparatus according to claim 1, characterized by The gas mixing treatment module (32) comprises, from top to bottom in the Z direction, a gas volume adjusting device (321), a heat exchanger (322) and a mixed air chamber (323). The recovery air duct (31) is connected to the gas volume adjusting device (321), and the drying fan (33) is connected to the mixed air chamber (323). The air supply module (30) further comprises a variable-diameter pipeline (35), the drying fan (33) is connected to the mixed air chamber (323) through the variable-diameter pipeline (35), and the variable-diameter pipeline (35) is tapered in the direction from the mixed air chamber (323) to the drying fan (33).

3. The drying apparatus according to claim 2, characterized in that, A return air inlet (C1) and a fresh air inlet (C2) are formed on the top side of the gas volume adjusting device (321), the recovery air duct (31) is connected to the return air inlet (C1), and the fresh air inlet (C2) is used to introduce ambient environment gas. The gas volume adjusting device (321) comprises a gas volume adjusting mechanism (3211) for opening and closing adjustment of the size of the return air inlet (C1) and the fresh air inlet (C2) to adjust the gas volume.

4. The drying apparatus according to claim 3, characterized in that, The recovery air duct (31) comprises a first recovery pipeline section (311) and a second recovery pipeline section (312) connected in sequence along the gas flow direction.

5. The drying apparatus according to claim 3, wherein The second recovery pipeline section (312) is arranged as a flexible pipeline and is located between the first recovery pipeline section (311) and the gas mixing treatment module (32). The drying air duct (34) comprises a first drying pipeline section (341) and a second drying pipeline section (342) connected in sequence along the gas flow direction.

6. The drying apparatus according to claim 2, wherein The first drying pipeline section (341) is arranged as a flexible pipeline and is located between the second drying pipeline section (342) and the drying fan (33). ​ 7. The drying apparatus according to claim 2, wherein ​ ​ 8. The drying apparatus according to claim 1, wherein The dryer module (20) further comprises a feeding mechanism (23), and the X-directional two ends of the dryer (21) are respectively formed with an inlet and an outlet; The feeding mechanism (23) is arranged on the X-directional side of the dryer (21) with the inlet and is connected with the inlet of the dryer (21).

9. The drying apparatus according to any one of claims 1 to 8, characterized in that, The top side of the rack (10) is formed with a horizontal support surface (11) and an inclined support surface (12), and the inclined support surface (12) extends downwardly and obliquely from the X-directional side of the horizontal support surface (11); The drying device (100) further comprises a lifting mechanism (40), which is arranged on the rack (10) and located below the horizontal support surface (11), and is connected with the dryer module (20) and drives the dryer module (20) to rotate, so as to switch the dryer module (20) between the horizontal state and the inclined state. In the horizontal state, the dryer module (20) is connected to the horizontal support surface (11) and separated from the inclined support surface (12); in the inclined state, the dryer module (20) is connected to the inclined support surface (12) and separated from the horizontal support surface (11).

10. A drying system, characterized by Comprise: The drying device (100) according to claim 9; A conveyor for conveying materials and arranged upstream of the feeding mechanism (23) in the dryer module (20); A material collecting container arranged downstream of the outlet of the dryer (21); and A control module configured to control the drying device (100) and the conveyor according to the obtained information. ​

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