Dehumidifying dryer and method of operation thereof

Abstract

This invention discloses a dehumidifying dryer and its operating method. The dehumidifying heat exchange component is disposed inside the installation space of the housing; a material hopper is fixedly disposed on one side of the housing; both ends of a connecting pipe are connected to the upper part of the installation space and the upper part of the material hopper, respectively; one end of an air outlet pipe extends into the interior of the material hopper, and the other end extends into the installation space; the input end of the drying pipeline within the installation space is connected to the connecting pipe, and the output end of the drying pipeline is connected to the air outlet pipe. From the input end to the output end of the drying pipeline, a circulating filter, a plate heat exchanger, the dehumidifying side of a rotary honeycomb, and a drying heater are sequentially arranged; the input end of the regeneration pipeline within the installation space passes through the housing and is connected to the outside, and the output end of the regeneration pipeline is connected to the regeneration side of the rotary honeycomb. From the input end to the output end of the regeneration pipeline, a regeneration fan, a regeneration filter, and a regeneration heater are sequentially arranged. This invention is small in size, effectively saves space, is easy to install, and has strong adaptability.

Description

Technical Field

[0001] This invention relates to the technical field of dehumidifiers and related technologies, and in particular to a dehumidifier and its working method. Background Technology

[0002] In the field of injection molding, plastic raw materials must undergo dehumidification and drying treatment before processing to remove internal moisture and ensure the appearance accuracy and structural strength of injection molded products. Currently, existing dehumidifying dryers still have several shortcomings in practical applications: First, traditional dehumidifying dryers are bulky and heavy, requiring floor placement and cannot be directly mounted on injection molding machines. This not only occupies a significant amount of workshop space but also leads to messy piping layouts, installation limitations, and poor adaptability. Second, traditional dryers are separate from injection molding machines. After drying, the raw materials need to be transported over long distances via negative pressure suction equipment to reach the injection molding machine hopper. During this transport, the raw materials are continuously in contact with humid air, making them prone to reabsorbing moisture and causing a rebound in moisture content. This directly reduces the molding quality of injection molded products and easily results in defects such as silver streaks, bubbles, and cracking. Third, traditional drying equipment has low structural integration, scattered piping layouts, low air circulation efficiency, high overall energy consumption, and lacks adaptive adjustment capabilities based on the material's moisture state. This results in poor drying stability, limited functionality, and difficulty in adapting to various plastic raw materials with different moisture absorption characteristics, leading to inconsistent drying effects and poor versatility and energy efficiency. Summary of the Invention

[0003] In view of this, in order to solve the above problems, the object of the present invention is to provide a dehumidifying dryer, comprising: The housing has an installation space formed inside it; A dehumidification and heat exchange component, wherein the dehumidification and heat exchange component is disposed inside the installation space; A material hopper, which is fixedly installed on one side of the box body; A connecting pipe, the two ends of which are respectively connected to the upper part of the installation space and the upper part of the material bucket; An air outlet pipe, one end of which extends into the interior of the material barrel and downwards in a vertical direction, and the other end of which extends into the installation space; The dehumidification and heat exchange components include: a rotary honeycomb, a drying heater, a regeneration heater, a plate heat exchanger, a regeneration filter, a circulating filter, and a regeneration fan; The installation space is equipped with a drying pipeline. The input end of the drying pipeline is connected to the connecting pipe, and the output end of the drying pipeline is connected to the air outlet pipe. From the input end to the output end of the drying pipeline, the circulating filter, the plate heat exchanger, the dehumidification side of the rotary honeycomb, and the drying heater are arranged in sequence. The installation space is also equipped with a regeneration pipeline. The input end of the regeneration pipeline passes through the housing and is connected to the outside. The output end of the regeneration pipeline is connected to the regeneration side of the rotating honeycomb. From the input end to the output end of the regeneration pipeline, the regeneration fan, the regeneration filter, and the regeneration heater are arranged in sequence.

[0004] The aforementioned dehumidifying dryer further includes: a geared motor, the geared motor being fixed inside the housing, a drive gear being fixedly mounted on the drive shaft of the geared motor, a driven gear being mounted on the bottom of the rotating honeycomb, and the drive gear meshing with the driven gear.

[0005] In the aforementioned dehumidifying dryer, a temperature sensor is installed at one end of the connecting pipe that connects to the material hopper.

[0006] In the aforementioned dehumidifying dryer, the end of the air outlet pipe that extends into the material barrel is provided with a plurality of sets of air outlet holes along its axial direction, and the outer wall of the end of the air outlet pipe that extends into the material barrel is also provided with a plurality of air guide hoods, each of the air guide hoods corresponding to and surrounding a set of air outlet holes.

[0007] In the aforementioned dehumidifying dryer, each of the air guide hoods has an air guide sidewall and an air guide opening. The air guide sidewall is arranged in a ring structure, and an angle is formed between the generatrix of the air guide sidewall and the axis of the end of the air outlet pipe that extends into the material barrel. The air guide opening is formed between the lower end of the air guide sidewall and the outer wall of the air outlet pipe.

[0008] In the aforementioned dehumidifying dryer, the diameter of several sets of air outlet holes is arranged in an increasing manner along the vertical direction.

[0009] In the aforementioned dehumidifying dryer, the top of the material hopper is provided with a feed inlet, and the inner wall of the feed inlet is provided with a surrounding air outlet.

[0010] The aforementioned dehumidifying dryer further includes: a control box; the control box is fixed to the side wall of the material hopper, and the control box is electrically connected to the geared motor, the drying heater, the regeneration heater, and the regeneration fan.

[0011] The aforementioned dehumidifying dryer further includes: a dew point detector; the dew point detector is disposed between the dehumidification side of the rotary honeycomb and the drying heater in the drying pipeline; the dew point detector is electrically connected to the control box; the dew point detector is used to detect the actual dew point value of the fluid leaving the dehumidification side of the rotary honeycomb; a standard dew point value is preset in the control box; when the actual dew point value is greater than the standard dew point value, the control box controls the regeneration heater to increase the heating temperature; when the actual dew point value is less than the standard dew point value, the control box controls the regeneration heater to decrease the heating temperature.

[0012] A method for operating a dehumidifying dryer, comprising the aforementioned dehumidifying dryer. Step S1: Fill the hopper of the dehumidifying dryer with a material to be dried; Step S2: Obtain an operating parameter based on the material. The operating parameter is pre-input into the dehumidifying dryer. The operating parameter includes at least the following: Standard drying temperature; Standard drying time; The standard insulation temperature is lower than the standard drying temperature. Step S3: Start the dehumidifier dryer to put it into a drying mode; when the dehumidifier dryer is in the drying mode, it operates at the standard drying temperature and the actual drying time of the dehumidifier dryer is obtained in real time. Step S4: Compare the actual drying time with the standard drying time in real time until the actual drying time is greater than the standard drying time; Step S5: The dehumidifier automatically enters a heat preservation mode. When the dehumidifier is in the heat preservation mode, it operates at the standard heat preservation temperature.

[0013] The positive effects of the above technical solution compared with the existing technology are: This invention provides a dehumidifying dryer and its operating method. The dehumidifying dryer integrates the drying and regeneration pipelines within the housing, which is then side-mounted to the side wall of the material hopper. This allows the dehumidifying dryer to be directly installed on the injection molding machine, reducing its overall size and eliminating the need for floor installation, effectively saving space. It is also convenient to install and highly adaptable. Furthermore, because it can be directly installed on the injection molding machine, the dried raw material does not require long-distance negative pressure transport and can be directly fed for injection molding, preventing contact between the dried material and external humid air and eliminating secondary moisture regain. In addition, this device achieves a closed-loop cycle of airflow filtration, cooling, dehumidification, and heating through the integrated drying pipeline, continuously regenerating the honeycomb of the rotating wheel through the regeneration pipeline, ensuring continuous and efficient dehumidification. Simultaneously, by comparing the actual drying time with the standard drying time, the dehumidifying dryer switches to a heat preservation mode to maintain the material's dryness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a dehumidifying dryer according to the present invention.

[0015] Figure 2 This is a cross-sectional view of a dehumidifying dryer according to the present invention.

[0016] 1. Material hopper; 2. Housing; 3. Rotary honeycomb wheel; 4. Drying heater; 5. Regeneration heater; 6. Plate heat exchanger; 7. Circulating filter; 8. Regeneration fan; 9. Connecting pipe; 10. Air outlet duct; 11. Gear motor; 12. Drive gear; 13. Driven gear; 14. Temperature sensor; 15. Air outlet; 16. Air guide hood; 17. Air guide sidewall; 18. Air guide port; 19. Surrounding air outlet; 20. Regeneration filter; 21. Control box; 22. Dehumidification and heat exchange components; 23. Installation space. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0018] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0019] like Figures 1 to 2 As shown, a preferred embodiment of a dehumidifying dryer is illustrated, which includes: a material tank 1 and a housing 2.

[0020] The enclosure 2 has an installation space 23; a dehumidification heat exchange component 22 is disposed inside the installation space 23; a connecting pipe 9 is connected at both ends to the upper part of the installation space 23 and the upper part of the material tank 1, respectively; an air outlet pipe 10 is provided, with one end extending into the interior of the material tank 1 and extending downward in a vertical direction, and the other end extending into the installation space 23; wherein, the dehumidification heat exchange component 22 includes: a rotary honeycomb 3, a drying heater 4, a regeneration heater 5, a plate heat exchanger 6, a regeneration filter 20, a circulating filter 7, and a regeneration fan 8. The installation space 23 is equipped with a drying pipeline. The input end of the drying pipeline is connected to the connecting pipe 9, and the output end of the drying pipeline is connected to the air outlet pipe 10. Along the drying pipeline from the input end to the output end, a circulating filter 7, a plate heat exchanger 6, the dehumidification side of the rotary honeycomb 3, and a drying heater 4 are arranged in sequence. The installation space 23 is also equipped with a regeneration pipeline. The input end of the regeneration pipeline passes through the housing 2 and is connected to the outside. The output end of the regeneration pipeline is connected to the regeneration side of the rotary honeycomb 3. Along the regeneration pipeline from the input end to the output end, a regeneration fan 8, a regeneration filter 20, and a regeneration heater 5 are arranged in sequence.

[0021] The aforementioned dehumidifying dryer integrates both the drying and regeneration pipelines within the housing 2, resulting in a compact overall size. The bottom of the material hopper 1 has a mounting bracket, allowing the dehumidifying dryer to be directly mounted on the injection molding machine. The discharge end of the material hopper 1 is aligned with the inlet end of the injection molding machine. The dehumidifying dryer is used to dehumidify and dry the materials required for the injection molding machine's operation. The dried materials can be directly fed into the injection molding machine for use. Preferably, this dehumidifying dryer can dry raw materials such as nylon, PET, PBT, and PC.

[0022] In actual operation, the drying pipeline, connecting pipe, air outlet pipe, and the interior of the material tank 1 together form a relatively closed circulation pipeline. The hot and humid air discharged from the material tank 1 first enters the circulation filter 7 to filter out the dirt. The filtered air enters the plate heat exchanger 6 for cooling. The cooled air enters the rotary honeycomb 3 for dehumidification. The dehumidified air enters the drying heater 4 for heating. Finally, the heated air enters the material tank 1 to dry the raw materials in the material tank 1. Since the air exchanges heat with the raw materials, the temperature of the air after drying the raw materials in the material tank 1 decreases, thus forming the aforementioned hot and humid air. Then, it enters the drying pipeline and repeats the above steps. The regeneration pipeline is a straight-through pipeline. During operation, outside air enters the regeneration pipeline under the action of the regeneration fan 8, then enters the regeneration filter 20 for filtration and purification, and then enters the regeneration heater 5 to heat and form high-temperature hot air. The high-temperature hot air is then delivered to the regeneration side of the rotary honeycomb 3 to remove the moisture adsorbed by the rotary honeycomb 3. At this time, an output pipe is provided between the regeneration side of the rotary honeycomb 3 and the housing 2. The air containing water vapor is finally discharged to the outside of the housing 2 through this output pipe.

[0023] Specifically, the plate heat exchanger 6 is connected to an external circulating cooling water supply device to provide circulating cooling water to reduce the temperature of the humid and hot air after circulation.

[0024] In addition to the above, the present invention also has the following embodiments: Furthermore, a dehumidifying dryer further includes: a geared motor 11; the geared motor 11 is fixed inside the housing 2, a drive gear 12 is fixedly mounted on the drive shaft of the geared motor 11, and a driven gear 13 is mounted on the bottom of the rotating honeycomb 3, with the drive gear 12 meshing with the driven gear 13. Specifically, when the geared motor 11 is started, the drive shaft of the geared motor 11 rotates, thereby driving the drive gear 12 to rotate, and the rotation of the drive gear 12 drives the driven gear 13 to rotate, so that the dehumidification side and the regeneration side of the rotating honeycomb 3 continuously alternate, ensuring continuous and stable dehumidification operation of the dehumidifying dryer.

[0025] Furthermore, a dehumidifying dryer further includes a control box 21; the control box 21 is fixed to the side wall of the material hopper 1, and is electrically connected to the geared motor 11, the drying heater 4, the regeneration heater 5, and the regeneration fan 8. Specifically, the control box 21 controls the working status of the geared motor 11, the drying heater 4, the regeneration heater 5, and the regeneration fan 8, preferably including the working mode, start / stop time, and running time.

[0026] Furthermore, in a dehumidifying dryer, a temperature sensor 14 is installed at one end of the connecting pipe 9 that connects to the material tank 1. Specifically, when the hot air, after drying treatment, enters the material tank 1 to dry the raw materials, the heat of the hot air is absorbed by the raw materials, causing the air temperature to drop. As the drying time progresses, the heat absorbed by the raw materials gradually approaches saturation, and the temperature of the humid hot air slowly rises and gradually approaches the initial inlet temperature. At this time, if the heating power of the drying heater 4 is not reduced, the raw materials are easily over-dried. Therefore, by installing a temperature sensor 14 at the inlet end of the connecting pipe 9, the temperature change of the return air can be monitored in real time, and the temperature signal can be fed back to the control box 21. The control box 21 adaptively adjusts the output power of the drying heater 4, which can effectively avoid over-drying of the raw materials, improve the drying quality, and significantly reduce energy consumption, thus achieving energy saving.

[0027] Furthermore, in a dehumidifying dryer, a plurality of sets of air outlet holes 15 are sequentially arranged along the axial direction at one end of the air outlet pipe 10 extending into the material barrel 1. A plurality of air guide hoods 16 are also provided on the outer wall of the end of the air outlet pipe 10 extending into the material barrel 1, each air guide hood 16 corresponding to and surrounding a set of air outlet holes 15. Specifically, each set of air outlet holes 15 has a plurality of air outlet holes 15 arranged in a circular array at the same height along the air outlet pipe 10, thus fully drying materials located at different heights within the material barrel 1.

[0028] Specifically, the air outlet pipe 10 can be equipped with 3-6 sets of air outlet holes 15 for drying materials. The number of sets of air outlet pipes 10 can be selected according to the actual use, and the number of each set of air outlet pipes 10 can also be selected according to the actual situation.

[0029] Furthermore, in a dehumidifying dryer, each air guide hood 16 has an air guide sidewall 17 and an air guide port 18. The air guide sidewall is arranged in a ring structure, and an angle is formed between the generatrix of the air guide sidewall 17 and the axis of the end of the air outlet pipe 10 that extends into the material barrel 1. The air guide port 18 is formed between the lower end of the air guide sidewall 17 and the outer wall of the air outlet pipe 10. Specifically, by tilting the air guide sidewall 17, the hot air blown out by the air outlet pipe 10 through the air outlet 15 can be effectively guided to the lower part and side wall area of ​​the material barrel 1, thereby eliminating the dead air delivery area at the bottom of the material barrel 1, allowing the hot air to diffuse evenly inside the material barrel 1, and thus improving the overall uniformity of drying of the raw materials; wherein, the angle is preferably less than 90 degrees.

[0030] Furthermore, in a dehumidifying dryer, the diameters of several sets of air outlet holes 15 are arranged in an increasing manner along the vertical direction. Specifically, the diameters of the several sets of air outlet holes 15 arranged sequentially along the axial direction gradually increase from the top end of the air outlet pipe towards the bottom end, that is, the diameter of an air outlet hole at a relatively lower position is larger than the diameter of an air outlet hole at a relatively higher position. Since the air pressure gradually decreases along the conveying direction when hot air is conveyed from top to bottom in the air outlet pipe, by setting the diameter of the bottom air outlet hole 15 to be larger than that at the top end, the loss of air pressure at the bottom end of the material barrel 1 can be effectively compensated, so that the air volume of each set of air outlet holes 15 along the height direction of the air outlet pipe 10 is balanced, thereby ensuring that the raw materials in each layer of the material barrel 1 are heated evenly and significantly improving the overall drying effect.

[0031] Furthermore, in a dehumidifying dryer, a feed inlet is provided at the top of the material hopper 1, and a surrounding air outlet 19 is provided on the inner wall of the feed inlet. Specifically, an air guide plate is provided on the inner wall of the feed inlet. The air guide plate is conical and has several grids to form a surrounding air outlet 19. The surrounding air outlet 19 effectively prevents dust and debris from falling directly into the interior of the material hopper 1.

[0032] Furthermore, a dehumidifying dryer further includes: a dew point detector, which is installed between the dehumidification side of the rotary honeycomb 3 and the drying heater 4 in the drying pipeline. The dew point detector is electrically connected to a control box 21. The dew point detector is used to detect the actual dew point value of the fluid leaving the dehumidification side of the rotary honeycomb 3. The control box 21 presets a standard dew point value for the fluid. When the actual dew point value is greater than the standard dew point value, the control box 21 controls the regeneration heater 5 to increase the heating temperature and restore the performance of the rotary honeycomb 3. When the actual dew point value is less than the standard dew point value, the control box 21 controls the regeneration heater 5 to decrease the heating temperature, thereby achieving energy saving. In actual use, different standard dew point values ​​are set according to different raw materials in the material tank 1. For example, a higher standard dew point value can be set for raw materials that are not easily hygroscopic, and a lower standard dew point value can be set for raw materials that are highly hygroscopic.

[0033] The dew point is the critical temperature at which air becomes saturated with water vapor and begins to condense under normal pressure. The higher the dew point, the greater the air humidity; the lower the dew point, the drier the air. By detecting the dew point value of the airflow on the dehumidification side of the rotary honeycomb 3, the dehumidification condition is automatically and accurately determined. Based on the characteristics of different raw materials, corresponding standard dew point values ​​are set to achieve targeted temperature control.

[0034] A method for operating a dehumidifying dryer, comprising the aforementioned dehumidifying dryer. Step S1: Fill the material to be dried into the material hopper 1 of the dehumidifying dryer; Step S2: Obtain operating parameters based on the material. These operating parameters are pre-input into the dehumidifying dryer and include at least the following: Standard drying temperature; Standard drying time; Standard insulation temperature, which is lower than the standard drying temperature; Step S3: Start the dehumidifier dryer to put it into a drying mode. When the dehumidifier dryer is in drying mode, it operates at a standard drying temperature and the actual drying time is obtained in real time. Step S4: Compare the actual drying time with the standard drying time in real time until the actual drying time is greater than the standard drying time. Step S5: The dehumidifier automatically enters a heat preservation mode. When the dehumidifier is in heat preservation mode, it operates at the standard heat preservation temperature.

[0035] Specifically, the air outlet duct 10 is equipped with a temperature sensor and a flow meter. Control box 21 also has at least one timer. Specifically, the standard drying temperature is a temperature selected based on the material properties that is suitable for drying without damaging the material. Specifically, when operating at this standard drying temperature, the actual temperature detected by the temperature sensor inside the air outlet duct is equal to the standard drying temperature. This temperature equality is achieved through the coordinated control of the geared motor 11, the drying heater 4, the regeneration heater 5, and the regeneration fan 8 via the control box 21.

[0036] The standard drying time is a time selected based on the material properties to ensure drying is complete. Specifically, when the flow rate detected by the flow meter is greater than a preset standard flow rate, the control box starts timing via a timer. When the flow rate is less than the standard flow rate, the timer stops timing. The time of this timing is the drying period, and the sum of several drying periods equals the actual drying time. The timer is only allowed to start timing when the temperature actually detected by the temperature sensor in the outlet duct is equal to the standard drying temperature.

[0037] The standard insulation temperature is a temperature selected based on the material properties of the material for insulation. Specifically, when operating at this standard insulation temperature, the actual temperature detected by the temperature sensor inside the air outlet duct is equal to the standard insulation temperature.

[0038] Furthermore, the operating parameters for step S2 also include: standard dew point value; Step S3 further includes: detecting the actual dew point value of the fluid leaving the dehumidification side of the rotary honeycomb in real time using a dew point detector; Step S4 also includes: comparing the actual dew point value with the standard dew point value in real time until the actual dew point value is greater than the standard dew point value; The standard dew point value and the actual dew point value are used as parallel conditions to determine whether to start the heat preservation mode. Only when the actual drying time is greater than the standard drying time and the actual dew point value is greater than the standard dew point value can the process proceed to step S5.

[0039] Furthermore, the working method of this application also includes the following embodiment: the air guide shroud 16 is generally arranged in a conical annular structure, the outer diameter of the upper end of the air guide shroud 16 is smaller than the outer diameter of the lower end, and several strain gauges are embedded on the outer surface of each air guide shroud 16. The strain gauges are used to obtain the pressure on the outer surface of the air guide shroud 16, which comes from the filling of the material. The strain gauges can obtain a rough value of the material volume in the material bucket 1 under conditions where it is not visible. When several strain gauges in the same air guide shroud 16 are all subjected to a stable pressure, the control box includes this as an adjustment unit.

[0040] Based on the application of the strain gauge, in step S1, the actual standard drying temperature is calculated as ((number of adjustment units - 1) * 0.05 + 1) * input standard drying temperature. First, the standard drying temperature is input into the control box 21. The control box 21 calculates the actual standard drying temperature based on the input of the strain gauge, and then continues to run steps S2 to S5.

[0041] Furthermore, the strain gauge is connected to the control box 21 via a line that runs through the material bucket 1 along the air outlet duct 10.

[0042] In a preferred embodiment, at least one temperature sensor is also provided on the inner surface of each air guide shroud 16. The temperature sensor is used to detect the temperature inside the corresponding air guide shroud 16. When the temperature detected by at least two temperature sensors is lower than the standard insulation temperature and remains so for a preset time, the dehumidifier is automatically controlled to enter a drying mode, and steps S3 to S5 are repeated to obtain the temperature at different heights.

[0043] The temperature sensor is connected to the control box 21 via a line, which runs through the material bucket 1 along the air outlet duct 10.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A dehumidifying dryer, characterized in that, include: A housing, wherein an installation space is formed within the housing; A dehumidification and heat exchange component, wherein the dehumidification and heat exchange component is disposed inside the installation space; A material hopper, which is fixedly installed on one side of the box body; A connecting pipe, the two ends of which are respectively connected to the upper part of the installation space and the upper part of the material bucket; An air outlet pipe, one end of which extends into the interior of the material barrel and downwards in a vertical direction, and the other end of which extends into the installation space; The dehumidification and heat exchange assembly includes: a rotary honeycomb, a drying heater, a regeneration heater, a plate heat exchanger, a regeneration filter, a circulating filter, and a regeneration fan; The installation space is equipped with a drying pipeline. The input end of the drying pipeline is connected to the connecting pipe, and the output end of the drying pipeline is connected to the air outlet pipe. From the input end to the output end of the drying pipeline, the circulating filter, the plate heat exchanger, the dehumidification side of the rotary honeycomb, and the drying heater are arranged in sequence. The installation space is also equipped with a regeneration pipeline. The input end of the regeneration pipeline passes through the housing and is connected to the outside. The output end of the regeneration pipeline is connected to the regeneration side of the rotating honeycomb. From the input end to the output end of the regeneration pipeline, the regeneration fan, the regeneration filter, and the regeneration heater are arranged in sequence.

2. The dehumidifying dryer according to claim 1, characterized in that, Also includes: A geared motor is fixed inside the housing. A drive gear is fixedly mounted on the drive shaft of the geared motor. A driven gear is mounted on the bottom of the rotating honeycomb. The drive gear meshes with the driven gear.

3. The dehumidifying dryer according to claim 1, characterized in that, A temperature sensor is installed at one end of the connecting pipe that connects to the material bucket.

4. A dehumidifying dryer according to claim 1, characterized in that, The end of the air outlet pipe that extends into the material barrel is provided with a number of sets of air outlet holes along its axial direction. The outer wall of the end of the air outlet pipe that extends into the material barrel is also provided with a number of air guide hoods, each of which is respectively surrounded by a set of air outlet holes.

5. A dehumidifying dryer according to claim 4, characterized in that, Each of the air guide hoods has an air guide sidewall and an air guide opening. The air guide sidewall is arranged in a ring structure. An angle is formed between the generatrix of the air guide sidewall and the axis of the end of the air outlet pipe that extends into the material barrel. The air guide opening is formed between the lower end of the air guide sidewall and the outer wall of the air outlet pipe.

6. A dehumidifying dryer according to claim 4, characterized in that, The diameter of several sets of air outlets increases in a vertical direction.

7. A dehumidifying dryer according to claim 1, characterized in that, The top of the material barrel is provided with a feeding port, and the inner wall of the feeding port is provided with a surrounding air outlet.

8. A dehumidifying dryer according to claim 2, characterized in that, Also includes: Control box; The control box is fixed to the side wall of the material hopper, and the control box is electrically connected to the geared motor, the drying heater, the regeneration heater and the regeneration fan respectively.

9. A dehumidifying dryer according to claim 2, characterized in that, Also includes: Dew point detector; the dew point detector is installed between the dehumidification side of the rotary honeycomb and the drying heater in the drying pipeline. The dew point detector is electrically connected to the control box. The dew point detector is used to detect the actual dew point value of the fluid leaving the dehumidification side of the rotary honeycomb. The control box has a preset standard dew point value. When the actual dew point value is greater than the standard dew point value, the control box controls the regeneration heater to increase the heating temperature; when the actual dew point value is less than the standard dew point value, the control box controls the regeneration heater to decrease the heating temperature.

10. A method for operating a dehumidifying dryer, characterized in that, Including the dehumidifying dryer according to any one of claims 1-9, Step S1: Fill the hopper of the dehumidifying dryer with a material to be dried; Step S2: Obtain an operating parameter based on the material. The operating parameter is pre-input into the dehumidifying dryer. The operating parameter includes at least the following: Standard drying temperature; Standard drying time; The standard insulation temperature is lower than the standard drying temperature. Step S3: Start the dehumidifier dryer to put it into a drying mode; when the dehumidifier dryer is in the drying mode, it operates at the standard drying temperature and the actual drying time of the dehumidifier dryer is acquired in real time. Step S4: Compare the actual drying time with the standard drying time in real time until the actual drying time is greater than the standard drying time; Step S5: The dehumidifier automatically enters a heat preservation mode. When the dehumidifier is in the heat preservation mode, it operates at the standard heat preservation temperature.

Images