Energy-saving berry hot air drying waste heat recovery equipment
The waste heat recovery equipment for hot air drying of berries, which utilizes the principles of frictional heat generation and secondary steam recovery, solves the problem of waste heat during the drying process of berries, and achieves efficient, energy-saving, and continuous operation capabilities for berry drying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING SHUANGJI AGRICULLTURAL DEV CO LTD
- Filing Date
- 2026-05-14
- Publication Date
- 2026-07-10
AI Technical Summary
During the hot air drying process of berries, the sensible and latent heat contained in the hot and humid exhaust gas is directly emitted, resulting in energy waste and increased energy consumption costs for the drying process.
An energy-saving hot air drying waste heat recovery device for berries is adopted. Through the principle of friction heat generation and secondary steam recovery, the humid hot air flow is used as a heat source for closed hot air circulation. The initial heat is generated by the friction roller and friction ring plate. The humid hot air flow passes through the filter and steam compressor to form high-temperature and high-pressure steam for drying, thus realizing heat recovery.
It significantly reduces energy consumption, achieving high efficiency and energy saving in the berry drying process, and the equipment has the ability to operate continuously, reducing the need for additional heating equipment.
Smart Images
Figure CN122350352A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of waste heat recovery equipment for agricultural product drying, and more specifically, to an energy-saving waste heat recovery equipment for hot air drying of berries. Background Technology
[0002] In traditional hot air drying of berries, the drying medium (usually heated clean air) flows through the material layer, absorbing moisture evaporated from the fruit surface to form humid waste gas. To maintain stable temperature and humidity conditions inside the drying chamber, this humid waste gas is typically discharged directly into the external environment. Existing technologies mainly suffer from the following problems: The hot and humid exhaust gas contains a large amount of sensible and latent heat. Actual measurement data shows that the temperature of the exhaust gas from fruit hot air drying can still reach 40-60℃, and the relative humidity is as high as 70%-90%. Direct emission not only causes serious energy waste, but also significantly increases the unit energy consumption cost of the drying process. Summary of the Invention
[0003] In view of this, this application provides an energy-saving waste heat recovery device for hot air drying of berries to solve the technical problem of poor energy-saving effect of existing berry drying equipment.
[0004] This application provides an energy-saving waste heat recovery device for hot air drying of berries, wherein the energy-saving waste heat recovery device for hot air drying of berries includes: A drying chamber and a material cylinder rotatably located within the drying chamber, the material cylinder having an opening and multiple vent holes, and multiple friction rollers arranged at intervals around the rotation axis of the material cylinder in the opening; A friction ring plate, which surrounds the rotation axis and closes the opening, and has an inlet and an outlet communicating with the opening; A rotation drive mechanism is connected to the material cylinder to drive the material cylinder to rotate around the rotation axis. When the material cylinder rotates, each of the friction rollers abuts against the inner side of the friction ring plate and rotates around the rotation axis. A heat exchange structure is disposed inside the material cylinder; A steam compressor and a filter are provided, wherein the output port of the steam compressor leads to the heat exchange structure, and the input port of the steam compressor leads to the interior of the drying chamber via the filter.
[0005] Furthermore, the energy-saving berry hot air drying waste heat recovery equipment includes an electric heating element disposed on the friction ring plate.
[0006] Furthermore, the material cylinder includes a first half-cylinder and a second half-cylinder arranged at intervals from each other, the first half-cylinder and the second half-cylinder are connected by the friction roller, the opening is located between the first half-cylinder and the second half-cylinder, the energy-saving berry hot air drying waste heat recovery equipment includes a steam output pipe and a drain pipe passing through the drying chamber, the first half-cylinder is rotatably mounted on the steam output pipe and one end of the steam output pipe leads to the heat exchange structure, the other end of the steam output pipe leads to the output port of the steam compressor, the second half-cylinder is rotatably mounted on the drain pipe and the drain pipe leads to the interior of the second half-cylinder, the heat exchange structure includes a plurality of heat exchange tubes, the first end of each heat exchange tube is connected to the steam output pipe, and the second end of each heat exchange tube is connected to the drain pipe.
[0007] Furthermore, the feed inlet is located at the upper end of the friction ring plate, and the discharge outlet is located at the lower end of the friction ring plate. The energy-saving berry hot air drying waste heat recovery equipment includes a feed pipe that runs through the drying chamber. The upper end of the feed pipe is located outside the drying chamber and is equipped with a first openable and closable door. The lower end of the feed pipe is connected to the friction ring plate and communicates with the feed inlet. The lower end of the discharge outlet is equipped with a second openable and closable door.
[0008] Furthermore, the rotation drive mechanism includes a first motor installed outside the drying chamber, the output shaft of the first motor extending into the interior of the drying chamber and connected to a drive gear, the first half-cylinder connected to a driven external gear ring, and the drive gear meshing with the driven external gear ring.
[0009] Furthermore, the filter includes a filter chamber and a plurality of filter cartridges rotatably installed within the filter chamber. Filter plates are installed in the filter cartridges. The filter chamber is connected to an air inlet and an air outlet. The air inlet leads to the interior of the drying chamber. The input port of the steam compressor leads to the air outlet. Any one of the plurality of filter cartridges can be rotated to a filtering working position. When the filter cartridge is in the filtering working position, the first axial end of the filter cartridge is connected to and communicates with the air inlet, and the other axial end of the filter cartridge is connected to and communicates with the air outlet.
[0010] Furthermore, an elastic retaining mechanism is provided on the inner side of the filter cylinder. The elastic retaining mechanism elastically cooperates with the filter plate in the corresponding filter cylinder to hold the filter plate in the corresponding filter cylinder in a first position. The filter plate can be telescopically disposed in the filter cylinder along the axial direction of the filter cylinder. A blocking structure is provided at the end of the air inlet cylinder facing the filter chamber. When the filter plate in the filter cylinder in the filtering working position is in the first position, it is blocked by the blocking structure and held in the filtering working position. When the resistance of the filter plate in the filtering working position to the airflow flowing into the air inlet cylinder is greater than or equal to a predetermined value, the filter plate pushes the corresponding elastic retaining mechanism to move to a second position. In the second position, the blocking structure releases its blockage on the filter plate.
[0011] Furthermore, the filter plate has an inclined surface on the side facing the air inlet cylinder, and the blocking structure is located at the lower end of the corresponding blocked filter plate. The inclined surface on the filter plate in the filter cylinder in the filtration working position gradually extends downward and towards the air inlet cylinder.
[0012] Furthermore, a first clearance notch and a second clearance notch are formed on the end face of the side of the filter cylinder facing the air inlet cylinder. When the filter cylinder rotates in the filter chamber, the first clearance notch and the second clearance notch can pass through the blocking structure in sequence so that the filter cylinder passes over the filter working position. The blocking structure extends into the first clearance notch of the filter cylinder in the filter working position.
[0013] Furthermore, the inner side of the filter cartridge is provided with an elastic element receiving cavity, the elastic retaining mechanism is an elastic element installed in the elastic element receiving cavity, and the outer side of the filter plate is provided with an ear plate extending into the elastic element receiving cavity of the corresponding filter cartridge. One end of the elastic element is connected to the cavity wall of the elastic element receiving cavity, and the other end of the elastic element is connected to the ear plate.
[0014] The beneficial effects of the energy-saving berry hot air drying waste heat recovery equipment provided in this application are as follows: Compared to existing technologies, the energy-saving berry hot air drying waste heat recovery equipment provided by this invention, after berries are loaded into the material cylinder, the rotation drive mechanism drives the material cylinder to rotate around the rotation axis to agitate the berries inside. Each friction roller, abutting the inner side of the friction ring plate, rotates around the rotation axis. The friction between the multiple friction rollers and the friction ring plate generates initial heat for drying the berries inside the material cylinder. After a certain period, the water vapor and other humid airflow generated during the berry drying process inside the material cylinder can be discharged into the drying chamber through multiple exhaust holes. This humid airflow is filtered by a filter and then enters a steam compressor. The filter removes dust, debris, and other impurities. The compressed steam is then sent to the heat exchange structure inside the material cylinder to exchange heat with the tumbling berries, releasing heat and causing the moisture in the berries to evaporate. The humid airflow carrying the newly evaporated moisture is discharged back into the drying chamber, filtered again, and then enters the steam compressor, forming a closed-loop hot air circulation. This process fully recovers the humid and hot airflow generated during berry drying. This humid and hot airflow is repeatedly used as a heat source for drying berries by a steam compressor. In this way, the waste heat that would otherwise be directly discharged is recycled, significantly reducing energy consumption. This energy-saving berry hot air drying waste heat recovery equipment adopts the principle of frictional heat generation and secondary steam recovery, eliminating the need for additional heating equipment to dry berries, and has the advantages of high efficiency and energy saving.
[0015] In a further embodiment, when one of the filter cartridges becomes clogged due to excessive dust accumulation, the filter cartridge can be rotated to switch to the other filter cartridge in the filtration position, allowing the clean filter cartridge in the other cartridge to continue filtration without requiring machine shutdown for replacement. This significantly improves the continuous operation capability of the energy-saving berry hot air drying waste heat recovery equipment. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a perspective view of an energy-saving waste heat recovery device for hot air drying of berries according to an embodiment of this application; Figure 2 This is a three-dimensional schematic diagram of a portion of the structure of an energy-saving berry hot air drying waste heat recovery device according to an embodiment of this application; Figure 3 This is a three-dimensional schematic diagram of a portion of the structure of an energy-saving berry hot air drying waste heat recovery device according to an embodiment of this application; Figure 4 This is a three-dimensional schematic diagram of a portion of the filter structure in an energy-saving berry hot air drying waste heat recovery device according to an embodiment of this application; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a three-dimensional schematic diagram of a portion of the filter structure in an energy-saving berry hot air drying waste heat recovery device according to an embodiment of this application; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic diagram showing the interaction between the filter cartridge and the blocking structure in the energy-saving berry hot air drying waste heat recovery equipment according to an embodiment of this application when the filter cartridge is in the filtration working position. Figure 9 This is a cross-sectional schematic diagram of a portion of the structure of the filter in an energy-saving berry hot air drying waste heat recovery device according to an embodiment of this application; Figure 10 for Figure 9 Enlarged view of point C in the middle; Figure 11 This is a schematic diagram of the fit between the filter cartridge and the filter plate in an energy-saving berry hot air drying waste heat recovery device according to an embodiment of this application.
[0018] Explanation of reference numerals in the attached figures: 1-Drying chamber; 2-Friction roller; 3-Steam compressor; 4-Electric heating element; 5-Steam output pipe; 6-Drain pipe; 7-Heat exchange pipe; 8-First manifold; 9-Second manifold; 10-Feed pipe; 11-First openable / closeable door; 12-Second openable / closeable door; 13-Cylinder; 14-First motor; 15-Drive gear; 16-Driven external gear ring; 17-Filter chamber; 18-Rotating frame; 19-Rotating shaft; 20-Inlet cylinder; 21-Outlet cylinder; 22-First steam collector 23-Second steam collecting pipe; 24-Blocking structure; 25-Spring; 26-Discharge pipe; 100-Material cylinder; 101-Opening; 102-Exhaust port; 103-First half-cylinder; 104-Second half-cylinder; 200-Friction ring plate; 201-Inlet; 202-Outlet; 300-Filter cylinder; 301-First clearance notch; 302-Second clearance notch; 303-Elastic element receiving cavity; 400-Filter plate; 401-Inclined surface; 402-Ear plate. Detailed Implementation
[0019] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. One or more embodiments of this application are exemplarily shown in the drawings to provide a more accurate and thorough understanding of the technical solutions disclosed herein. However, it should be understood that this application can be implemented in many different forms and is not limited to the embodiments described below.
[0020] In the accompanying drawings of this application, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0021] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.
[0022] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0023] See Figures 1 to 3 This application provides an energy-saving waste heat recovery device for hot air drying of berries, wherein the energy-saving waste heat recovery device for hot air drying of berries includes: The drying chamber 1 and the material cylinder 100 are rotatably located inside the drying chamber 1. The material cylinder 100 has an opening 101 and a plurality of exhaust holes 102. A plurality of friction rollers 2 are arranged in the opening 101 at intervals around the rotation axis of the material cylinder 100. Friction ring plate 200 surrounds the rotation axis and closes the opening 101. Friction ring plate 200 has a feed port 201 and a discharge port 202 that communicate with the opening 101. Berry to be dried can be loaded into the material cylinder 100 through the feed port 201, and dried berries can be discharged through the discharge port 202. The outer side of friction ring plate 200 can be connected to the inner wall of drying chamber 1 through a connecting frame. A rotary drive mechanism is connected to the material cylinder 100 to drive the material cylinder 100 to rotate around the rotation axis. When the material cylinder 100 rotates, each friction roller 2 is attached to the inner side of the friction ring plate 200 and rotates around the rotation axis. A heat exchange structure is installed inside the material cylinder 100; The steam compressor 3 and the filter are connected. The output port of the steam compressor 3 leads to the heat exchange structure, and the input port of the steam compressor 3 leads to the interior of the drying chamber 1 through the filter.
[0024] In the energy-saving berry hot air drying waste heat recovery equipment provided by the present invention, after berries are loaded into the material cylinder 100, the rotation drive mechanism drives the material cylinder 100 to rotate around the rotation axis to stir the berries inside the material cylinder 100. Each friction roller 2 is attached to the inner side of the friction ring plate 200 and rotates around the rotation axis. Multiple friction rollers 2 and friction ring plate 200 generate heat to generate initial heat for drying the berries inside the material cylinder 100. After a certain period of time, the water vapor and other humid and hot airflow generated by the drying of the berries inside the material cylinder 100 can be discharged into the drying chamber 1 through multiple exhaust holes 102. This part of the humid and hot airflow is filtered by the filter and then enters the steam compressor 3. The filter removes dust, debris and other impurities entrained in it. Then it enters the steam compressor 3 and is compressed to form high temperature and high pressure superheated steam, which is sent into the heat exchange structure inside the material cylinder 100 to exchange heat with the tumbling berries and release heat, so that the moisture in the berries evaporates. The hot, humid airflow carrying newly evaporated moisture is discharged back into drying chamber 1, filtered through a filter, and then enters steam compressor 3, forming a closed-loop hot air circulation. This process fully recovers the hot, humid airflow generated during berry drying. The steam compressor 3 repeatedly utilizes this hot, humid airflow as a heat source for drying the berries. In this way, waste heat that would otherwise be directly discharged is recycled, significantly reducing energy consumption. This energy-saving berry hot air drying waste heat recovery equipment uses the principles of frictional heat generation and secondary steam recovery, eliminating the need for additional heating equipment to dry the berries, thus offering high efficiency and energy savings.
[0025] As another embodiment, the energy-saving berry hot air drying waste heat recovery equipment includes an electric heating element 4 disposed on the friction ring plate 200. Therefore, when necessary, the electric heating element 4 can also be turned on to heat and dry the berries in the material cylinder 100.
[0026] According to one embodiment of this application, the material cylinder 100 includes a first half-cylinder 103 and a second half-cylinder 104 arranged at intervals between each other. Both the first half-cylinder 103 and the second half-cylinder 104 are provided with multiple exhaust holes 102. The first half-cylinder 103 and the second half-cylinder 104 are connected by a friction roller 2. An opening 101 is located between the first half-cylinder 103 and the second half-cylinder 104. The surfaces of both the first half-cylinder 103 and the second half-cylinder 104 are formed into conical surfaces that expand towards the opening 101, facilitating the accumulation of berries in the first half-cylinder 103 and the second half-cylinder 104 at the opening 101 and discharge through the discharge port 202 during discharge. The energy-saving berry hot air drying waste heat recovery equipment includes a steam output pipe 5 penetrating the drying chamber 1 and an exhaust... The water pipe 6, the first half-cylinder 103 is rotatably mounted on the steam output pipe 5 and one end of the steam output pipe 5 is connected to the heat exchange structure, and the other end of the steam output pipe 5 is connected to the output port of the steam compressor 3. The second half-cylinder 104 is rotatably mounted on the drain pipe 6 and the drain pipe 6 is connected to the interior of the second half-cylinder 104. The heat exchange structure includes multiple heat exchange tubes 7, which can be arranged in sequence at intervals. The first end of each heat exchange tube 7 is connected to the steam output pipe 5, and the second end of each heat exchange tube 7 is connected to the drain pipe 6. The high-temperature hot steam in the heat exchange tube 7 exchanges heat with the external berries to produce low-temperature steam and water, which are discharged from the drain pipe 6. The drain pipe 6 extends downward at an angle from the drying chamber 1 to facilitate the discharge of water from the heat exchange tube 7.
[0027] In addition, one end of the steam output pipe 5 is connected to the first manifold 8, the first end of each heat exchange pipe 7 is connected to the first manifold 8, the drain pipe 6 is connected to the second manifold 9 inside the second half cylinder 104, the second end of each heat exchange pipe 7 is connected to the second manifold 9, and the heat exchange pipe 7 slopes downward from the first manifold 8 toward the second manifold 9 to facilitate the smooth flow of water in the heat exchange pipe 7 into the second manifold 9.
[0028] According to a specific embodiment of this application, the feed inlet 201 is located at the upper end of the friction ring plate 200, and the discharge outlet 202 is located at the lower end of the friction ring plate 200. The energy-saving berry hot air drying waste heat recovery equipment includes a feed pipe 10 that runs through the drying chamber 1. The upper end of the feed pipe 10 is located outside the drying chamber 1 and is equipped with a first openable and closable door 11. When the drying chamber 1 and the logistics cylinder 100 are performing drying operations, the first openable and closable door 11 needs to be closed. The lower end of the feed pipe 10 is connected to the friction ring plate 200 and communicates with the feed inlet 201. The lower end of the discharge outlet 202 is equipped with a second openable and closable door 12. The second openable and closable door 12 can be connected to a cylinder 13. The cylinder 13 drives the discharge outlet 202 to close or leave the discharge outlet 202. The drying chamber 1 is provided with a discharge pipe 26 at the bottom of the discharge outlet 202.
[0029] According to a specific embodiment of this application, the rotation drive mechanism includes a first motor 14 installed outside the drying chamber 1. The output shaft of the first motor 14 extends into the interior of the drying chamber 1 and is connected to a drive gear 15. The first half-cylinder 103 is connected to a driven external gear ring 16, and the drive gear 15 meshes with the driven external gear ring 16.
[0030] See Figures 4 to 11 According to one embodiment of this application, the filter includes a filter chamber 17 and a plurality (e.g., three) of filter cartridges 300 rotatably mounted within the filter chamber 17. The plurality of filter cartridges 300 are connected to a rotating frame 18, which is rotatably connected to the filter chamber 17 via a rotating shaft 19. Filter plates 400 are installed in the filter cartridges 300. The filter chamber 17 is connected to an air inlet 20 and an air outlet 21. The air inlet 20 leads to the interior of the drying chamber 1, and the input port of the steam compressor 3 leads to the air outlet 21. Any filter cartridge 300 can be rotated to the filtration working position. When the filter cartridge 300 is in the filtration working position, its first axial end is connected to and communicates with the air inlet cylinder 20, and its other axial end is connected to and communicates with the air outlet cylinder 21. When the filter plate 400 in one of the filter cartridges 300 becomes clogged due to excessive dust accumulation, the filter cartridge 300 can be rotated to switch to the filtration working position of the other filter cartridge 300, allowing the clean filter plate 400 in the other filter cartridge 300 to continue filtration without needing to stop the machine for replacement. This greatly improves the continuous operation capability of the energy-saving berry hot air drying waste heat recovery equipment.
[0031] In addition, the energy-saving berry hot air drying waste heat recovery equipment also includes a first steam collection pipe 22 and a second steam collection pipe 23. One end of the first steam collection pipe 22 is connected to the top of the drying chamber 1 and leads to the interior of the drying chamber 1. The other end of the first steam collection pipe 22 is connected to the air inlet cylinder 20. One end of the second steam collection pipe 23 is connected to the input port of the steam compressor 3. The second end of the second steam collection pipe 23 is connected to the air outlet cylinder 21. When the filter cylinder 300 is in the filtration working position, the steam in the drying chamber 1 passes through the first steam collection pipe 22, the air inlet cylinder 20, the filter cylinder 300 (filtered by the filter plate 400 inside), the air outlet cylinder 21, and the second steam collection pipe 23 in sequence and is recovered to the steam compressor 3.
[0032] The rotation switching of the filter chamber 17 can be electrically controlled, for example, by equipping the rotating shaft 19 with a second motor. However, according to the preferred embodiment of this application, an elastic holding mechanism is provided on the inner side of the filter cylinder 300. The elastic holding mechanism elastically cooperates with the filter plate 400 in the corresponding filter cylinder 300 to hold the filter plate 400 in the corresponding filter cylinder 300 in a first position. The filter plate 400 can be telescopically arranged in the filter cylinder 300 along the axial direction of the filter cylinder 300. A stop structure 24 is provided at the end of the air inlet cylinder 20 facing the filter chamber 17. The stop structure 24 can specifically be a block protruding from the air inlet cylinder 20. The filter in the filter cylinder 300 in the filtration working position... When the filter plate 400 is in the first position, it is stopped by the blocking structure 24 and held in the filtering working position. When the resistance of the filter plate 400 in the filter cylinder 300 to the airflow flowing into the air inlet cylinder 20 is greater than or equal to a predetermined value, the filter plate 400 pushes the corresponding elastic holding mechanism to move to the second position. In the second position, the blocking structure 24 releases its stop on the filter plate 400. In this embodiment, the fully automatic switching of multiple filter cylinders 300 is realized through the elastic holding mechanism and the blocking structure 24, without the need for manual judgment and operation, and without the need for an electronic control mechanism. The physical characteristic of increased airflow resistance after the filter plate 400 is blocked is used as the trigger signal, which is simple and reliable. This ensures that the filter can operate continuously for a long time, greatly improving the operating efficiency and continuous operation capability of the entire energy-saving berry hot air drying waste heat recovery equipment.
[0033] According to a specific embodiment of this application, the filter plate 400 has an inclined surface 401 on the side facing the air inlet cylinder 20. The blocking structure 24 is located at the lower end of the corresponding blocked filter plate 400. The inclined surface 401 on the filter plate 400 in the filter cylinder 300 in the filtration working position gradually extends downward and towards the air inlet cylinder 20. Due to the presence of the inclined surface 401, the force generated by the airflow in the air inlet cylinder 20 on the filter plate 400 in the filter cylinder 300 in the filtration working position can be decomposed into a downward thrust. When the filter plate 400 pushes the corresponding elastic holding mechanism to move to the second position without being blocked by the blocking structure 24, the downward thrust pushes the filter cylinder 300 downward to rotate, so that the next filter cylinder 300 rotates in time to reach the filtration working position.
[0034] According to one embodiment of this application, a first clearance notch 301 and a second clearance notch 302 are formed on the end face of the filter cartridge 300 facing the air inlet cylinder 20. When the filter cartridge 300 rotates in the filter chamber 17, the first clearance notch 301 and the second clearance notch 302 can pass through the blocking structure 24 in sequence so that the filter cartridge 300 passes over the filter working position. The blocking structure 24 extends into the first clearance notch 301 of the filter cartridge 300 in the filter working position. The first clearance notch 301 and the second clearance notch 302 can ensure that the rotating frame 18 drives the multiple filter cartridges 300 to rotate in a counterclockwise or clockwise direction without interfering with the blocking structure 24.
[0035] According to a specific embodiment of this application, the inner side of the filter cylinder 300 is provided with an elastic element receiving cavity 303, and the elastic holding mechanism is an elastic element (e.g., spring 25) installed in the elastic element receiving cavity 303. The outer side of the filter plate 400 is provided with an ear plate 402 that extends into the corresponding elastic element receiving cavity 303 of the filter cylinder 300. One end of the elastic element is connected to the cavity wall of the elastic element receiving cavity 303, and the other end of the elastic element is connected to the ear plate 402.
[0036] It should be noted that the above embodiments only illustrate preferred embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting this application. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this application, such as combining different features in various embodiments, and these should all fall within the protection scope of this application.
Claims
1. An energy-saving waste heat recovery device for hot air drying of berries, characterized in that, The energy-saving waste heat recovery equipment for hot air drying of berries includes: A drying chamber and a material cylinder rotatably located within the drying chamber, the material cylinder having an opening and multiple vent holes, and multiple friction rollers arranged at intervals around the rotation axis of the material cylinder in the opening; A friction ring plate, which surrounds the rotation axis and closes the opening, and has an inlet and an outlet communicating with the opening; A rotation drive mechanism is connected to the material cylinder to drive the material cylinder to rotate around the rotation axis. When the material cylinder rotates, each of the friction rollers abuts against the inner side of the friction ring plate and rotates around the rotation axis. A heat exchange structure is disposed inside the material cylinder; A steam compressor and a filter are provided, wherein the output port of the steam compressor leads to the heat exchange structure, and the input port of the steam compressor leads to the interior of the drying chamber via the filter.
2. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 1, characterized in that, The energy-saving berry hot air drying waste heat recovery equipment includes an electric heating element installed on the friction ring plate.
3. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 1, characterized in that, The material cylinder includes a first half-cylinder and a second half-cylinder arranged at intervals from each other. The first half-cylinder and the second half-cylinder are connected by the friction roller. The opening is located between the first half-cylinder and the second half-cylinder. The energy-saving berry hot air drying waste heat recovery equipment includes a steam output pipe and a drain pipe that pass through the drying chamber. The first half-cylinder is rotatably mounted on the steam output pipe, and one end of the steam output pipe leads to the heat exchange structure. The other end of the steam output pipe leads to the output port of the steam compressor. The second half-cylinder is rotatably mounted on the drain pipe, and the drain pipe leads to the interior of the second half-cylinder. The heat exchange structure includes a plurality of heat exchange tubes. The first end of each heat exchange tube is connected to the steam output pipe, and the second end of each heat exchange tube is connected to the drain pipe.
4. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 1, characterized in that, The feed inlet is located at the upper end of the friction ring plate, and the discharge outlet is located at the lower end of the friction ring plate. The energy-saving berry hot air drying waste heat recovery equipment includes a feed pipe that runs through the drying chamber. The upper end of the feed pipe is located outside the drying chamber and is equipped with a first openable and closable door. The lower end of the feed pipe is connected to the friction ring plate and communicates with the feed inlet. The lower end of the discharge outlet is equipped with a second openable and closable door.
5. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 3, characterized in that, The rotation drive mechanism includes a first motor installed outside the drying chamber, the output shaft of the first motor extending into the interior of the drying chamber and connected to a drive gear, the first half-cylinder connected to a driven external gear ring, and the drive gear meshing with the driven external gear ring.
6. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 1, characterized in that, The filter includes a filter chamber and multiple filter cartridges rotatably installed within the filter chamber. Filter plates are installed in the filter cartridges. The filter chamber is connected to an air inlet and an air outlet. The air inlet leads to the interior of the drying chamber. The input port of the steam compressor leads to the air outlet. Any one of the multiple filter cartridges can be rotated to a filtering working position. When the filter cartridge is in the filtering working position, the first axial end of the filter cartridge is connected to and communicates with the air inlet, and the other axial end of the filter cartridge is connected to and communicates with the air outlet.
7. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 6, characterized in that, An elastic retaining mechanism is provided on the inner side of the filter cylinder. The elastic retaining mechanism elastically cooperates with the filter plate in the corresponding filter cylinder to hold the filter plate in the corresponding filter cylinder in a first position. The filter plate can be telescopically disposed in the filter cylinder along the axial direction of the filter cylinder. A blocking structure is provided at the end of the air inlet cylinder facing the filter chamber. When the filter plate in the filter cylinder in the filtering working position is in the first position, it is blocked by the blocking structure and held in the filtering working position. When the resistance of the filter plate in the filtering working position to the airflow flowing into the air inlet cylinder is greater than or equal to a predetermined value, the filter plate pushes the corresponding elastic retaining mechanism to move to a second position. In the second position, the blocking structure releases its block on the filter plate.
8. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 7, characterized in that, The filter plate has an inclined surface on the side facing the air inlet cylinder. The blocking structure is located at the lower end of the filter plate that is blocked. The inclined surface on the filter plate in the filter cylinder in the filtration working position gradually extends downward and towards the air inlet cylinder.
9. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 8, characterized in that, The filter cartridge has a first clearance notch and a second clearance notch on the end face facing the air inlet cylinder. When the filter cartridge rotates in the filter chamber, the first clearance notch and the second clearance notch can pass through the blocking structure in sequence so that the filter cartridge passes over the filter working position. The blocking structure extends into the first clearance notch of the filter cartridge in the filter working position.
10. The energy-saving waste heat recovery equipment for hot air drying of berries according to claim 7, characterized in that, The filter cartridge has an elastic element receiving cavity on its inner side. The elastic retaining mechanism is an elastic element installed in the elastic element receiving cavity. The filter plate has an ear plate extending into the elastic element receiving cavity of the corresponding filter cartridge on its outer side. One end of the elastic element is connected to the cavity wall of the elastic element receiving cavity, and the other end of the elastic element is connected to the ear plate.