Segmented variable-temperature chili pepper heat pump drying device

Abstract

The utility model discloses a kind of segmented variable-temperature pepper heat pump drying device, including primary drying cabinet, secondary drying cabinet and tertiary drying cabinet, the upper end of primary drying cabinet is provided with drying heat pump, air inlet pipeline is installed on the outer wall of primary drying cabinet, one end of air inlet pipeline is provided with sealing cover, air outlet pipeline is installed on the outer wall of tertiary drying cabinet, partition plate A is provided between primary drying cabinet and secondary drying cabinet, partition plate B is provided between secondary drying cabinet and tertiary drying cabinet, fan shell and rotary fan are installed in the inside of air inlet pipeline, filter screen is provided at the connecting place of air inlet pipeline and primary drying cabinet, the utility model is by being provided with drying heat pump in primary drying cabinet top, and the synergies of air inlet pipeline, filter screen and rotary fan are combined, make the hot air that enters drying cabinet clean and flow direction uniform, effectively avoid the problem that pepper is heated unevenly due to airflow disorder in traditional drying device.

Description

Technical Field

[0001] This utility model relates to the field of agricultural product processing and drying, and in particular to a segmented variable temperature chili heat pump drying device. Background Technology

[0002] Chili pepper heat pump drying device. This device is mainly used in the chili pepper drying process. Through graded temperature control and mechanical auxiliary structures, it achieves efficient and uniform drying of chili peppers, ensuring the quality and storage stability of chili peppers during the drying process.

[0003] Currently, the main methods for drying chili peppers include natural sun-drying, coal-fired hot air drying, electric heating drying, and single-stage heat pump drying. Natural sun-drying is greatly affected by weather and environment, and has problems such as long cycle time and high risk of pollution. Although coal-fired hot air drying is relatively efficient, it has low thermal efficiency, high energy consumption, and serious pollution. Single-stage heat pump drying equipment can utilize waste heat recovery to improve energy efficiency, but it still generally has the following shortcomings:

[0004] Firstly, single-stage temperature control causes the surface of chili peppers to harden rapidly at high temperatures, making it difficult for internal moisture to escape, resulting in a dry exterior and a moist interior.

[0005] Secondly, uneven airflow distribution resulted in some chili peppers not receiving sufficient heat, affecting the uniformity of drying.

[0006] Third, the lack of mechanical assistance measures leads to the accumulation of chili peppers, resulting in slow moisture migration within the layers and a prolonged drying cycle. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a segmented variable temperature chili heat pump drying device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a segmented variable temperature chili pepper heat pump drying device, comprising a primary drying chamber, a secondary drying chamber, and a tertiary drying chamber. A drying heat pump is installed at the upper end of the primary drying chamber. An air inlet duct is installed on the outer wall of the primary drying chamber, and a sealing cap is provided at one end of the air inlet duct. An air outlet duct is installed on the outer wall of the tertiary drying chamber. A baffle plate A is provided between the primary and secondary drying chambers, and a baffle plate B is provided between the secondary and tertiary drying chambers. A fan housing and a rotating fan are installed inside the air inlet duct. A filter screen is provided at the connection between the air inlet duct and the primary drying chamber. A variable frequency motor is installed at the bottom of the primary drying chamber, and a rotating mesh frame is connected to the upper end of the variable frequency motor. Hydraulic rods A and B are installed on the inner wall of the secondary drying chamber. A load-bearing fixing mesh is provided inside the tertiary drying chamber.

[0009] As a further description of the above technical solution:

[0010] The front ends of the primary drying chamber, the secondary drying chamber, and the tertiary drying chamber are movably connected with movable doors. The primary drying chamber and the secondary drying chamber are integrated and connected as an integral unit. The primary drying chamber, the secondary drying chamber, and the tertiary drying chamber are of the same size. The drying heat pump is fixedly installed on the top of the primary drying chamber and is connected to the primary drying chamber.

[0011] As a further description of the above technical solution:

[0012] The air inlet duct is fixedly connected to the top of the outer wall of the first-stage drying chamber, and the air outlet duct is fixedly connected to the bottom of the outer wall of the third-stage drying chamber. The air inlet duct and the air outlet duct are connected. The sealing cover is detachably installed at one end of the air inlet duct. The fan housing is fixedly installed inside the air inlet duct and the air outlet duct. The rotating fan is rotatably connected inside the fan housing. There are two rotating fans, and their airflow directions are consistent.

[0013] As a further description of the above technical solution:

[0014] The barrier plate A is fixedly connected between the primary drying box and the secondary drying box, and the barrier plate B is fixedly connected between the secondary drying box and the tertiary drying box. A connecting mesh A is provided inside the barrier plate A, and the connecting mesh A is located at the bottom corner of the barrier plate A. A connecting mesh B is provided inside the barrier plate B, and the connecting mesh B is located at the top corner of the barrier plate B.

[0015] As a further description of the above technical solution:

[0016] The variable frequency motor is fixedly installed at the bottom of the primary drying chamber, the rotating mesh frame is driven and connected to the upper end of the variable frequency motor, and the rotating mesh frame is rotatably connected inside the primary drying chamber. The interior of the tertiary drying chamber is fixedly equipped with a support mesh, and the number of support meshes is three.

[0017] As a further description of the above technical solution:

[0018] The hydraulic rod A is fixedly connected to the inner wall at the bottom of the secondary drying chamber, and the hydraulic rod B is fixedly connected to the inner wall at the top of the secondary drying chamber. A bearing extrusion mesh is fixedly connected to the top of the hydraulic rod A, and an extrusion plate is fixedly connected to the bottom of the hydraulic rod B. The size of the extrusion plate is adapted to the bearing extrusion mesh, and the extrusion plate is movably connected inside the bearing extrusion mesh.

[0019] This utility model has the following beneficial effects:

[0020] This invention, by installing a drying heat pump at the top of the primary drying chamber and combining it with the synergistic effect of the air inlet pipe, filter screen and rotating fan, ensures that the hot air entering the drying chamber is clean and flows evenly, effectively avoiding the problem of uneven heating of peppers caused by airflow turbulence in traditional drying devices.

[0021] This invention adopts a segmented temperature-controlled structure design. The first-stage drying box is used for low-temperature pre-drying, the second-stage drying box is used in conjunction with hydraulic rods and extrusion structure for medium-temperature drying, and the third-stage drying box is used for high-temperature final shaping. This achieves a gradual drying process from low temperature to high temperature, avoiding the phenomenon of "dry outside and wet inside" where the surface of the chili pepper hardens rapidly while the internal moisture is difficult to drain, thus significantly improving the uniformity of drying and the stability of the finished product.

[0022] This invention introduces hydraulic rods A and B within the secondary drying chamber to drive the supporting extrusion mesh and extrusion plate to form a moderate mechanical extrusion, increasing the contact area between the chili pepper layers, promoting heat and moisture transfer, accelerating drying efficiency, and shortening the overall drying cycle. Simultaneously, the multi-layered supporting and fixing mesh within the tertiary drying chamber can support the chili peppers in layers, further improving air circulation and drying consistency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a segmented variable temperature chili heat pump drying device proposed in this utility model.

[0024] Figure 2 This is an internal schematic diagram of a segmented variable temperature chili heat pump drying device proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the barrier plate A and barrier plate B of the segmented variable temperature chili heat pump drying device proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the rotating fan structure of a segmented variable temperature chili heat pump drying device proposed in this utility model.

[0027] Legend:

[0028] 1. Primary drying oven; 2. Secondary drying oven; 3. Tertiary drying oven; 4. Drying heat pump; 5. Movable door; 6. Air inlet duct; 7. Air outlet duct; 8. Sealing cover; 9. Baffle plate A; 10. Baffle plate B; 11. Connecting mesh A; 12. Connecting mesh B; 13. Fan housing; 14. Rotary fan; 15. Filter screen; 16. Variable frequency motor; 17. Rotating mesh frame; 18. Hydraulic rod A; 19. Bearing extrusion mesh; 20. Hydraulic rod B; 21. Extrusion plate; 22. Bearing fixing mesh. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] Reference Figure 1-4 One embodiment provided by this utility model:

[0032] Example 1:

[0033] A segmented variable temperature chili pepper heat pump drying device includes a primary drying chamber 1, a secondary drying chamber 2, and a tertiary drying chamber 3. A drying heat pump 4 is installed at the upper end of the primary drying chamber 1. An air inlet duct 6 is installed on the outer wall of the primary drying chamber 1, and a sealing cap 8 is installed at one end of the air inlet duct 6. An air outlet duct 7 is installed on the outer wall of the tertiary drying chamber 3. A baffle plate A9 is installed between the primary drying chamber 1 and the secondary drying chamber 2, and a baffle plate B10 is installed between the secondary drying chamber 2 and the tertiary drying chamber 3. A fan housing 13 and a rotating fan 14 are installed inside the air inlet duct 6. A filter screen 15 is installed at the connection between the air inlet duct 6 and the primary drying chamber 1. A variable frequency motor 16 is installed at the bottom of the primary drying chamber 1, and a rotating mesh frame 17 is connected to the upper end of the variable frequency motor 16. Hydraulic rods A18 and B20 are installed on the inner wall of the secondary drying chamber 2. A load-bearing fixing net 22 is installed inside the tertiary drying chamber 3.

[0034] Working principle and usage procedure: When using, first open the movable doors of the first, second and third drying chambers, and place the peppers to be dried evenly on the rotating mesh frame in the first drying chamber, the bearing extrusion mesh in the second drying chamber and the bearing fixing mesh in the third drying chamber. Then close the movable doors and close the sealing cover at the end of the air inlet pipe.

[0035] The drying heat pump and rotary fan are started. The hot air generated by the heat pump enters the primary drying chamber through the air inlet duct. Under the action of the rotating mesh frame, the peppers undergo preliminary low-temperature dehydration treatment to prevent the surface from drying and hardening too quickly. The airflow enters the secondary drying chamber through the connecting mesh of baffle plate A. The temperature of the secondary drying chamber rises, and at the same time, hydraulic rods A and B move alternately, causing the supporting extrusion mesh and extrusion plate to moderately compress the pepper accumulation layer, thereby improving heat transfer efficiency and accelerating the migration and evaporation of internal moisture.

[0036] After secondary drying, the chili peppers are carried by airflow into the tertiary drying chamber. Hot air enters through the connecting mesh of the baffle plate B. The tertiary drying chamber is at a higher temperature, where the chili peppers undergo final drying and shaping. The supporting and fixing mesh ensures that the chili peppers are heated evenly under high temperature.

[0037] Throughout the segmented drying process, hot and humid air is exhausted through the exhaust ducts, forming a stable airflow circulation. Once the temperature and humidity inside the three-stage drying chamber reach the set values, the control system automatically stops the heat pump and fan, opens the movable doors of each drying chamber, and removes the dried peppers.

[0038] This embodiment achieves gradual dehydration of chili peppers from low to high temperature through segmented temperature control combined with dynamic airflow and mechanical extrusion assistance. This avoids the "dry outside and wet inside" problem caused by traditional one-time high-temperature drying, improves the uniformity of chili pepper drying and the quality of the finished product, and reduces energy consumption by utilizing waste heat circulation from a heat pump, achieving energy-saving and high-efficiency results.

[0039] Example 2:

[0040] The front ends of the primary drying oven 1, the secondary drying oven 2, and the tertiary drying oven 3 are movably connected with movable doors 5. The primary drying oven 1 and the secondary drying oven 2 are integrated, and the secondary drying oven 2 and the tertiary drying oven 3 are integrated. The primary drying oven 1, the secondary drying oven 2, and the tertiary drying oven 3 are the same size. The drying heat pump 4 is fixedly installed on the top of the primary drying oven 1 and is connected to the primary drying oven 1.

[0041] The air inlet duct 6 is fixedly connected to the top of the outer wall of the first-stage drying chamber 1, and the air outlet duct 7 is fixedly connected to the bottom of the outer wall of the third-stage drying chamber 3. The air inlet duct 6 and the air outlet duct 7 are connected. The sealing cover 8 is detachably installed at one end of the air inlet duct 6. The fan housing 13 is fixedly installed inside the air inlet duct 6 and the air outlet duct 7. The rotating fan 14 is rotatably connected inside the fan housing 13. There are two rotating fans 14, and their air directions are consistent.

[0042] The improvement of this embodiment compared to the prior art is as follows: This embodiment further optimizes the first embodiment. The front ends of the primary drying chamber 1, the secondary drying chamber 2, and the tertiary drying chamber 3 are all movably connected with movable doors 5, facilitating the loading, inspection, and removal of chili peppers at different stages. All drying chambers are integrated and identical in size, ensuring the modularity and compactness of the overall device structure. The drying heat pump 4 is fixedly installed on the top of the primary drying chamber 1 and directly connected to the interior of the chamber to ensure efficient and stable heat supply.

[0043] Compared with the prior art, the improvement of this second embodiment is as follows:

[0044] By integrating the connection and using a uniform-sized cabinet design, the sealing performance and airflow continuity of the device are improved, avoiding air and heat leakage that occurs when splicing traditional multi-cabinet structures, thereby improving drying efficiency.

[0045] By having two fans operating in the same direction, the air intake is larger and the air distribution is more uniform, overcoming the shortcomings of uneven air supply from existing single fans and effectively ensuring that chili peppers can receive stable hot air drying in different locations.

[0046] The removable sealing cover and fan housing design improve the ease of maintenance during use, allowing for regular cleaning of accumulated dust, preventing airflow blockage, and extending the equipment's service life.

[0047] Example 3:

[0048] The baffle plate A9 is fixedly connected between the primary drying box 1 and the secondary drying box 2, and the baffle plate B10 is fixedly connected between the secondary drying box 2 and the tertiary drying box 3. A connecting mesh A11 is provided inside the baffle plate A9, and the connecting mesh A11 is located at the bottom corner of the baffle plate A9. A connecting mesh B12 is provided inside the baffle plate B10, and the connecting mesh B12 is located at the top corner of the baffle plate B10.

[0049] The improvement of the implementation scheme of this embodiment over the prior art is that: through the separation effect of the baffle plate, the temperature zone independence between each drying box is achieved, so that the hot air can maintain different temperature distributions at different drying stages, avoiding the problem of chaotic temperature field in traditional drying devices, thereby ensuring the scientific nature of the step-by-step drying of chili peppers.

[0050] By setting up connecting nets at the corners of the baffle plate, a guided airflow channel is formed. Connecting net A11 is arranged at the bottom corner, which allows hot air in the primary drying chamber to be introduced from bottom to top into the secondary drying chamber, promoting the full penetration of hot air into the chili pepper layer; connecting net B12 is arranged at the top corner, which allows hot air to be introduced from the top into the tertiary drying chamber, forming a reverse air supply mode, thereby improving the defects of airflow short-circuiting and local stagnation.

[0051] Example 4:

[0052] The variable frequency motor 16 is fixedly installed at the bottom of the primary drying box 1, and the rotating mesh frame 17 is drivenly connected to the upper end of the variable frequency motor 16. The rotating mesh frame 17 is rotatably connected inside the primary drying box 1. The interior of the tertiary drying box 3 is fixedly installed with a bearing fixing mesh 22, and the number of bearing fixing meshes 22 is three.

[0053] Hydraulic rod A18 is fixedly connected to the inner wall at the bottom of the secondary drying chamber 2, and hydraulic rod B20 is fixedly connected to the inner wall at the top of the secondary drying chamber 2. A bearing extrusion mesh 19 is fixedly connected to the top of hydraulic rod A18, and an extrusion plate 21 is fixedly connected to the bottom of hydraulic rod B20. The size of the extrusion plate 21 is adapted to the bearing extrusion mesh 19, and the extrusion plate 21 is movably connected inside the bearing extrusion mesh 19.

[0054] The improvement of the implementation scheme of this embodiment compared with the prior art is that: by cooperating with the rotating mesh frame and the variable frequency motor, the peppers are continuously turned over during the first stage of drying, avoiding the problems of insufficient local heating and excessive local drying caused by static stacking, and improving the uniformity of the initial dehydration stage.

[0055] The extrusion structure driven by hydraulic rods enables periodic compression of the chili pepper layer during the secondary drying stage. This causes the stacking gaps between the chili peppers to change continuously, promoting hot air penetration and internal moisture migration, and significantly improving the efficiency of the medium-temperature drying stage.

[0056] The multi-layer support and fixing net design in the three-stage drying box enables layered shaping and drying of chili peppers, which not only enhances the penetration of hot air but also ensures that the finished chili peppers are intact and dried evenly.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A segmented variable temperature chili heat pump drying device, comprising a primary drying chamber (1), a secondary drying chamber (2), and a tertiary drying chamber (3), characterized in that: A drying heat pump (4) is installed at the upper end of the primary drying box (1). An air inlet pipe (6) is installed on the outer wall of the primary drying box (1). A sealing cap (8) is installed at one end of the air inlet pipe (6). An air outlet pipe (7) is installed on the outer wall of the tertiary drying box (3). A baffle plate A (9) is installed between the primary drying box (1) and the secondary drying box (2). A baffle plate B (10) is installed between the secondary drying box (2) and the tertiary drying box (3). The air inlet pipe ( The interior of the 6) is equipped with a fan housing (13) and a rotary fan (14). A filter screen (15) is provided at the connection between the air inlet pipe (6) and the first-stage drying box (1). A variable frequency motor (16) is installed at the bottom of the first-stage drying box (1). A rotating mesh frame (17) is connected to the upper end of the variable frequency motor (16). A hydraulic rod A (18) and a hydraulic rod B (20) are installed on the inner wall of the second-stage drying box (2). A load-bearing fixing mesh (22) is provided inside the tertiary drying box (3).

2. The segmented variable temperature chili heat pump drying device according to claim 1, characterized in that: The front ends of the primary drying box (1), the secondary drying box (2) and the tertiary drying box (3) are movably connected with movable doors (5). The primary drying box (1) and the secondary drying box (2) are integrally connected. The secondary drying box (2) and the tertiary drying box (3) are integrally connected. The primary drying box (1), the secondary drying box (2) and the tertiary drying box (3) are the same size. The drying heat pump (4) is fixedly installed on the top of the primary drying box (1). The drying heat pump (4) is connected to the primary drying box (1).

3. The segmented variable temperature chili heat pump drying device according to claim 1, characterized in that: The air inlet pipe (6) is fixedly connected to the top of the outer wall of the first-stage drying box (1), and the air outlet pipe (7) is fixedly connected to the bottom of the outer wall of the third-stage drying box (3). The air inlet pipe (6) and the air outlet pipe (7) are connected. The sealing cover (8) is detachably installed at one end of the air inlet pipe (6). The fan housing (13) is fixedly installed inside the air inlet pipe (6) and the air outlet pipe (7). The rotating fan (14) is rotatably connected inside the fan housing (13). There are two rotating fans (14), and their wind directions are consistent.

4. The segmented variable temperature chili heat pump drying device according to claim 1, characterized in that: The barrier plate A (9) is fixedly connected between the primary drying box (1) and the secondary drying box (2), and the barrier plate B (10) is fixedly connected between the secondary drying box (2) and the tertiary drying box (3). A connecting net A (11) is provided inside the barrier plate A (9), and the connecting net A (11) is located at the bottom corner of the barrier plate A (9). A connecting net B (12) is provided inside the barrier plate B (10), and the connecting net B (12) is located at the top corner of the barrier plate B (10).

5. The segmented variable temperature chili heat pump drying device according to claim 1, characterized in that: The variable frequency motor (16) is fixedly installed at the bottom of the first-stage drying box (1), the rotating mesh frame (17) is drivenly connected to the upper end of the variable frequency motor (16), the rotating mesh frame (17) is rotatably connected to the inside of the first-stage drying box (1), and the third-stage drying box (3) is fixedly installed with a bearing fixing mesh (22), the number of which is three.

6. The segmented variable temperature chili heat pump drying device according to claim 1, characterized in that: The hydraulic rod A (18) is fixedly connected to the inner wall at the bottom of the secondary drying box (2), and the hydraulic rod B (20) is fixedly connected to the inner wall at the top of the secondary drying box (2). The top of the hydraulic rod A (18) is fixedly connected to a bearing extrusion mesh (19), and the bottom of the hydraulic rod B (20) is fixedly connected to an extrusion plate (21). The size of the extrusion plate (21) is adapted to the bearing extrusion mesh (19), and the extrusion plate (21) is movably connected inside the bearing extrusion mesh (19).

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