A high-efficiency and energy-saving heat pump drying device for dried fruit processing

Abstract

This utility model provides a high-efficiency and energy-saving heat pump drying device for dried fruit processing, belonging to the technical field of dried fruit processing. It includes a drying chamber, a heat pump unit, and a tilting mechanism. A fine-tuning hydraulic cylinder is installed on the front side of the drying chamber, and a movable side panel is fixedly connected to the top of the cylinder. A material-picking mechanism is installed on the outer wall of the movable side panel, and an array of drying racks is installed inside the drying chamber. This utility model utilizes the drying chamber, heat pump unit, and fine-tuning hydraulic cylinder, along with the movable side panel, material-picking mechanism, and drying rack mechanism. The heat pump unit serves as the core heat source, providing stable and efficient energy-saving heat. The fine-tuning hydraulic cylinder drives the movable side panel to rise and fall slightly, thereby causing the entire drying rack mechanism to tilt slightly around the hinge point. This changes the contact surface between the dried fruit and the hot air, achieving uniform heating from multiple angles without dead zones, greatly improving drying efficiency and uniformity.

Description

Technical Field

[0001] This utility model belongs to the technical field of dried fruit processing, specifically relating to a high-efficiency and energy-saving heat pump drying device for dried fruit processing. Background Technology

[0002] Fruit drying is a processing method that uses heat energy to dehydrate fruits. The main products include dried fruit and fruit juice powder. After pretreatment such as sorting, washing, peeling and slicing, dried fruit is blanched to inhibit enzyme oxidation and treated with sulfur fumigation or sulfur immersion to prevent browning. Then, it is naturally sun-dried or artificially dried to reduce the moisture content to 15%-25%. It has the characteristics of small volume and good storage and transportation resistance. Currently, in dried fruit processing, hot air is mostly provided by electric heating or coal-fired boilers. During the drying process, the hot air flow is fixed and the materials are stationary, which easily leads to uneven heating of materials in different parts of the drying oven, resulting in local over-drying or under-drying, affecting product quality. During the dehydration process, the sugar in the fruit pulp seeps out and sticks firmly to the stationary drying rods or screens, which can easily cause damage when unloading, resulting in poor appearance and difficulty in cleaning. In order to solve the sticking problem, it is often necessary to stop the machine midway for manual turning, which not only increases labor intensity and disrupts the continuity and stability of drying, but also reduces production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency and energy-saving heat pump drying device for dried fruit processing, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency and energy-saving heat pump drying device for dried fruit processing includes a drying box, a heat pump unit, and a tilting rod mechanism. A fine-tuning hydraulic cylinder is provided on the front side of the drying box, and a movable side panel is fixedly connected to the top of the fine-tuning hydraulic cylinder. A material picking mechanism is provided on the outer wall of the movable side panel, and an array of drying racks is provided inside the drying box. The drying rack mechanism includes a side support plate, with hinged connectors at both ends of the side support plate, and a drying rod is provided inside the side support plate; A fan is connected to the output end of the heat pump unit; The flipping mechanism includes a fixed toothed plate fixedly installed on the inner wall of the drying box and a transmission belt attached to the bottom of the drying rod. The inner wall of the transmission belt is attached to a transmission shaft, and the outer wall of the transmission shaft is movably connected to a connecting seat.

[0005] As a preferred embodiment of this utility model, the hinged connector includes a central block, with connecting short shafts provided on the front and rear sides of the central block, and a spring telescopic rod fixedly connected to one side of the central block, and the central block and the side support plate are connected by the spring telescopic rod.

[0006] In a preferred embodiment of this utility model, the inner wall of the side support plate is provided with an inner sliding groove, and an inner slider is slidably connected to the inner wall of the inner sliding groove. The inner wall of the inner slider is movably connected to the outer wall of one end of the drying rod. A buffer spring is fixedly connected to the inner wall of the inner sliding groove, and one end of the buffer spring is attached to the outer wall of the inner slider.

[0007] As a preferred embodiment of the present invention, the drying oven includes a box body, and exhaust valves are provided on both sides of the box body. A piston is provided inside the exhaust valve, and the piston is threadedly connected to the box body. The exhaust valves and pistons on both sides are respectively located at the upper and lower ends of the box body. The outer end of the connecting short shaft on the hinged connector is movably connected to the inner wall of the housing and the movable side panel. A humidity detection probe is installed on the inside of the box near the exhaust valve.

[0008] In a preferred embodiment of this utility model, the output end of the fan is connected to an exhaust duct, and the output end of the exhaust duct is connected to an exhaust mechanism. There are two exhaust mechanisms, which are respectively located at the upper and lower ends. Each exhaust mechanism has multiple exhaust pipes arranged in a ring, and the exhaust pipes extend into the box. Control valves are installed at the connection points between the exhaust duct and the two exhaust mechanisms.

[0009] As a preferred embodiment of this utility model, the number of material picking mechanisms is two, and the two material picking mechanisms are respectively arranged on the box body and the movable side box plate, and the two material picking mechanisms are symmetrically arranged. The material handling mechanism includes an end block fixedly mounted on the box body and the movable side box plate. The inner wall of the end block is movably connected to a movable door plate via a connecting shaft. An observation window is provided on the outer wall of the movable door plate. The observation window includes a circular through groove and a circular window plate disposed outside the movable door panel. The circular window plate and the movable door panel are movably connected by a short pin. A magnetic block is embedded inside the circular window plate on the side away from the short pin.

[0010] As a preferred embodiment of this utility model, a receiving mesh plate is inserted into the inner wall of the box, and a magnetic block is provided inside the side of the receiving mesh plate, and the side of the receiving mesh plate is tightly connected to the magnetic block.

[0011] In a preferred embodiment of this utility model, the connecting seat is fixedly mounted on the side support plate, and a transmission gear is provided at one end of the transmission shaft, with the transmission gear and the fixed gear plate meshing together. The outer wall of the transmission belt is provided with multiple rubber protrusions at equal intervals, and the outer wall of the transmission belt is tightly connected to the outer wall of the drying rod through the multiple rubber protrusions.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The drying chamber, heat pump unit, and fine-tuning hydraulic cylinder, along with the movable side panel, material handling mechanism, and drying rack mechanism, work in concert. The heat pump unit serves as the core heat source, providing stable and efficient energy-saving heat. The fine-tuning hydraulic cylinder drives the movable side panel to rise and fall slightly, which in turn causes the entire drying rack mechanism to tilt slightly around the hinge point. This changes the contact surface between the dried fruit and the hot air, achieving uniform heating from multiple angles without dead zones, greatly improving drying efficiency and uniformity. Combined with an adjustable exhaust mechanism and exhaust valve, a flexible and controllable drying airflow path is formed, while the material handling mechanism provides convenient loading, unloading, and observation channels. By setting up a flipping mechanism, when the drying rack is tilted under the action of the fine-tuning hydraulic cylinder, the meshing of the fixed toothed plate and the transmission gear forces the transmission shaft to rotate. Through the transmission belt, all the drying racks rotate synchronously and slowly, which solves the problem of dried fruit sticking to the drying racks due to sugar release during the drying process. This ensures that the dried fruit falls completely onto the receiving screen, realizing automated flipping without interrupting the drying process, and further improving product quality and production efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 This is a schematic diagram of the overall external structure of this utility model; Figure 3 This is a schematic diagram of the connection structure between the drying rack mechanism and the flip-rod mechanism of this utility model. Figure 4 This is a schematic diagram of the flip-bar mechanism of this utility model; Figure 5 This is a detailed schematic diagram of the external structure of the transmission belt of this utility model; Figure 6 This is a schematic diagram of the drying oven of this utility model; Figure 7 This is a schematic diagram of the material handling mechanism of this utility model.

[0014] In the diagram: 10. Drying oven; 101. Oven body; 102. Exhaust valve; 11. Ventilation mechanism; 12. Heat pump unit; 13. Fan; 14. Exhaust duct; 15. Material handling mechanism; 151. Movable door panel; 152. Observation window; 16. Material receiving mesh plate; 17. Drying rack mechanism; 171. Drying rod; 172. Hinged connector; 173. Side support plate; 18. Movable side panel; 19. Fine-tuning hydraulic cylinder; 20. Flipping rod mechanism; 201. Fixed toothed plate; 202. Drive belt; 203. Connecting seat; 204. Drive shaft. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example 1

[0016] Reference Figure 1-2 6-7 are the first embodiments of this utility model. This embodiment provides a drying box 10, a heat pump unit 12 and a flip-bar mechanism 20. A fine-tuning hydraulic cylinder 19 is provided on the front side of the drying box 10. A movable side panel 18 is fixedly connected to the top of the fine-tuning hydraulic cylinder 19. A material picking mechanism 15 is provided on the outer wall of the movable side panel 18. An array of drying racks mechanism 17 is provided inside the drying box 10. The drying rack mechanism 17 includes a side support plate 173, with hinged connectors 172 connected to both ends of the side support plate 173, and a drying rod 171 provided inside the side support plate 173. A fan 13 is connected to the output end of the heat pump unit 12.

[0017] The hinged connector 172 includes a central block, with connecting short shafts provided on the front and rear sides of the central block. A spring telescopic rod is fixedly connected to one side of the central block, and the central block and the side support plate 173 are connected by the spring telescopic rod.

[0018] The inner wall of the side support plate 173 is provided with an inner sliding groove, and an inner slider is slidably connected to the inner wall of the inner sliding groove. The inner wall of the inner slider is movably connected to the outer wall of one end of the drying rod 171. A buffer spring is fixedly connected to the inner wall of the inner sliding groove, and one end of the buffer spring is attached to the outer wall of the inner slider.

[0019] The drying oven 10 includes a box body 101. Exhaust valves 102 are provided on both sides of the box body 101. A piston is provided inside the exhaust valve 102. The piston is threadedly connected to the box body 101. The exhaust valves 102 and the pistons on both sides are respectively located at the upper and lower ends of the box body 101. The outer end of the connecting short shaft on the hinge connector 172 is movably connected to the inner wall of the housing 101 and the movable side panel 18. A humidity detection probe is installed on the inside of the housing 101 near the exhaust valve 102.

[0020] The output end of the fan 13 is connected to the exhaust duct 14, and the output end of the exhaust duct 14 is connected to the exhaust mechanism 11; There are two exhaust mechanisms 11, and the two exhaust mechanisms 11 are respectively located at the upper and lower ends. Each exhaust mechanism 11 has multiple exhaust pipes arranged in a ring, and the exhaust pipes extend into the box 101. Control valves are installed at the connection points between the exhaust duct 14 and the two exhaust mechanisms 11; Specifically, there are two material handling mechanisms 15, and the two material handling mechanisms 15 are respectively set on the box body 101 and the movable side box plate 18, and the two material handling mechanisms 15 are symmetrically arranged. Furthermore, the material handling mechanism 15 includes an end block fixedly mounted on the box body 101 and the movable side box plate 18. The inner wall of the end block is movably connected to a movable door plate 151 via a connecting shaft. An observation window 152 is provided on the outer wall of the movable door plate 151. Preferably, the observation window 152 includes a circular through groove and a circular window plate disposed outside the movable door panel 151. The circular window plate and the movable door panel 151 are movably connected by a short pin. A magnetic block is embedded inside the circular window plate on the side away from the short pin. It should be noted that a receiving mesh plate 16 is inserted into the inner wall of the box 101, and magnetic blocks are provided inside the side of the receiving mesh plate 16, and the side of the receiving mesh plate 16 is tightly connected to the magnetic blocks. In use, rotate and open the movable door panels 151 on both sides, evenly spread the sliced ​​fruit pulp on the drying rod 171, insert the receiving mesh plate 16 into the box 101, close the movable door panels 151, open the control valve on the upper side of the exhaust duct 14, and open the piston in the exhaust valve 102 below the box 101. Start the fan 13 to draw the hot air discharged from the heat pump unit 12 into the exhaust duct 14 and through the upper exhaust mechanism 11, and deliver it into the box 101. The hot air passes through the longitudinally set multiple drying rack mechanisms 17 to remove excess moisture from the outer surface of the fruit pulp slices, thereby drying the fruit pulp slices. By changing the opening and closing state of the control valves on the upper and lower sides of the exhaust duct 14, and using the control valves 102 above and below the box 101, the direction of the drying airflow can be adjusted from the upper and lower positions of the box 101, thereby achieving drying of the fruit pulp from multiple directions. The start-up and control system uses a fine-tuning hydraulic cylinder 19 to drive the movable side box 18 and the material handling mechanism 15 to move up and down slightly back and forth. This raises and lowers the movable side box 18, causing the drying rack mechanism 17 to rotate and tilt slightly along the hinge joint 172 where it is connected to the box body 101. This changes the contact surface between the fruit pulp and the exhaust air from the exhaust mechanism 11 on the drying rack mechanism 17, allowing the fruit pulp to be dried from different directions, thereby accelerating the drying efficiency of the fruit pulp. When the humidity detection probe detects that the moisture content has reached the qualified value, close all control valves on the fan 13 and the exhaust duct 14. After the drying operation is completed, open the movable door 151 and pull out the receiving mesh 16 to take out the dried fruit. In summary, through the setup and coordinated use of the drying chamber 10, heat pump unit 12, fine-tuning hydraulic cylinder 19, movable side panel 18, material handling mechanism 15, and drying rack mechanism 17: the heat pump unit 12 serves as the core heat source, providing stable and efficient energy-saving heat. The fine-tuning hydraulic cylinder 19 drives the movable side panel 18 to rise and fall slightly, thereby causing the entire drying rack mechanism 17 to tilt slightly around the hinge point. This changes the contact surface between the dried fruit and the hot air, achieving uniform heating from multiple angles without dead zones, greatly improving drying efficiency and uniformity. Combined with the adjustable exhaust mechanism 11 and exhaust valve 102, a flexible and controllable drying airflow path is formed, while the material handling mechanism 15 provides a convenient loading, unloading, and observation channel. Example 2

[0021] Reference Figure 3-5 This is the second embodiment of the present utility model. Unlike the previous embodiment, this embodiment provides: the flipping rod mechanism 20 includes a fixed toothed plate 201 fixedly disposed on the inner wall of the drying box 10 and a transmission belt 202 attached to the bottom of the drying rod 171. The inner wall of the transmission belt 202 is attached to a transmission shaft 204, and the outer wall of the transmission shaft 204 is movably connected to a connecting seat 203. Specifically, the connecting seat 203 is fixedly mounted on the side support plate 173, and a transmission gear is provided at one end of the transmission shaft 204, and the transmission gear and the fixed gear plate 201 are meshed and connected. Furthermore, the outer wall of the transmission belt 202 is provided with multiple rubber protrusions at equal intervals, and the outer wall of the transmission belt 202 is tightly connected to the outer wall of the drying rod 171 through the multiple rubber protrusions. During use, as the micro-adjustment hydraulic cylinder 19 drives the movable side box plate 18 and the material picking mechanism 15 to move up and down slightly, causing the drying rack mechanism 17 to tilt, the transmission shaft 204, transmission belt 202, and connecting seat 203 in the flipping rod mechanism 20 tilt along with the drying rack mechanism 17. The fixed tooth plate 201 is fixedly mounted on the box body 101. The transmission gear on the transmission shaft 204 meshes with the fixed tooth plate 201. Under the interference of the fixed tooth plate 201, the transmission shaft 204 rotates, which drives the transmission belt 202 on the outer wall to move. The transmission belt 202 changes position, thereby driving the drying rod 171 to rotate. The rotation of the drying rod 171 can effectively prevent the fruit pulp on the drying rod 171 from sticking to the drying rod 171 due to moisture loss during the drying process, so that the dried fruit can fall smoothly onto the receiving mesh plate 16 and be collected later. In summary, by setting up the flipping mechanism 20, when the drying rack tilts under the action of the fine-tuning hydraulic cylinder, the meshing of the fixed toothed plate 201 and the transmission gear forces the transmission shaft 204 to rotate. Through the transmission belt 202, all the drying rods 171 rotate synchronously and slowly. This solves the industry problem of dried fruit sticking to the drying rods due to sugar release during the drying process, ensuring that the dried fruit falls completely onto the receiving mesh plate 16. It realizes automated flipping without interrupting the drying process, further improving product quality and production efficiency.

[0022] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-efficiency and energy-saving heat pump drying device for dried fruit processing, characterized in that: The equipment includes a drying box (10), a heat pump unit (12), and a flip-bar mechanism (20). A fine-tuning hydraulic cylinder (19) is provided on the front side of the drying box (10). A movable side panel (18) is fixedly connected to the top of the fine-tuning hydraulic cylinder (19). A material picking mechanism (15) is provided on the outer wall of the movable side panel (18). An array of drying racks mechanism (17) is provided inside the drying box (10). The drying rack mechanism (17) includes a side support plate (173), with hinged connectors (172) connected to both ends of the side support plate (173), and a drying rod (171) is provided inside the side support plate (173). The output end of the heat pump unit (12) is connected to a fan (13); The flipping mechanism (20) includes a fixed toothed plate (201) fixedly installed on the inner wall of the drying box (10) and a transmission belt (202) attached to the bottom of the drying rod (171). The inner wall of the transmission belt (202) is attached to a transmission shaft (204), and the outer wall of the transmission shaft (204) is movably connected to a connecting seat (203).

2. The high-efficiency energy-saving heat pump drying device for dried fruit processing according to claim 1, characterized in that: The hinged connector (172) includes a central block, with connecting short shafts provided on the front and rear sides of the central block. A spring telescopic rod is fixedly connected to one side of the central block, and the central block and the side support plate (173) are connected by the spring telescopic rod.

3. The high-efficiency energy-saving heat pump drying device for dried fruit processing according to claim 2, characterized in that: The inner wall of the side support plate (173) is provided with an inner sliding groove, and an inner slider is slidably connected to the inner wall of the inner sliding groove. The inner wall of the inner slider is movably connected to the outer wall of one end of the drying rod (171). A buffer spring is fixedly connected to the inner wall of the inner sliding groove, and one end of the buffer spring is attached to the outer wall of the inner slider.

4. The high-efficiency energy-saving heat pump drying device for dried fruit processing according to claim 3, characterized in that: The drying box (10) includes a box body (101), and exhaust valves (102) are provided on both sides of the box body (101). A piston is provided inside the exhaust valve (102), and the piston and the box body (101) are threadedly connected. The exhaust valves (102) and the pistons on both sides are respectively located at the upper and lower ends of the box body (101). The outer end of the connecting short shaft on the hinge connector (172) is movably connected to the inner wall of the housing (101) and the movable side panel (18); A humidity detection probe is installed on the inner side of the housing (101) near the exhaust valve (102).

5. The high-efficiency energy-saving heat pump drying device for dried fruit processing according to claim 4, characterized in that: The output end of the fan (13) is connected to an exhaust duct (14), and the output end of the exhaust duct (14) is connected to an exhaust mechanism (11). There are two exhaust mechanisms (11), and the two exhaust mechanisms (11) are respectively located at the upper and lower ends. Each exhaust mechanism (11) has multiple exhaust pipes arranged in a ring, and the exhaust pipes extend into the box (101). Control valves are respectively installed at the connection points between the exhaust duct (14) and the two exhaust mechanisms (11).

6. The high-efficiency energy-saving heat pump drying device for dried fruit processing according to claim 5, characterized in that: The number of material picking mechanisms (15) is two, and the two material picking mechanisms (15) are respectively set on the box body (101) and the movable side box plate (18), and the two material picking mechanisms (15) are symmetrically arranged; The material handling mechanism (15) includes an end block fixedly installed on the box body (101) and the movable side box plate (18). The inner wall of the end block is movably connected to a movable door plate (151) through a connecting shaft. The outer wall of the movable door plate (151) is provided with an observation window (152). The observation window (152) includes a circular through groove and a circular window plate disposed outside the movable door panel (151). The circular window plate and the movable door panel (151) are connected by a short pin. A magnetic block is embedded inside the circular window plate on the side away from the short pin.

7. A high-efficiency energy-saving heat pump drying device for dried fruit processing according to claim 6, characterized in that: The inner wall of the box (101) is fitted with a receiving mesh plate (16), and a magnetic block is provided inside the side of the receiving mesh plate (16), and the side of the receiving mesh plate (16) is tightly connected to the magnetic block.

8. The high-efficiency energy-saving heat pump drying device for dried fruit processing according to claim 7, characterized in that: The connecting seat (203) is fixedly mounted on the side support plate (173), and a transmission gear is provided at one end of the transmission shaft (204), and the transmission gear and the fixed tooth plate (201) are meshed and connected. The outer wall of the transmission belt (202) is provided with multiple rubber protrusions at equal intervals, and the outer wall of the transmission belt (202) is tightly connected to the outer wall of the drying rod (171) through the multiple rubber protrusions.

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