Walnut harvesting device
By designing a walnut harvesting device and adopting a hot air drying system controlled by a temperature controller, the problems of low efficiency and poor quality of natural air drying were solved, achieving fast and hygienic walnut drying and improving the quality and production efficiency of walnuts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Wu'an Forestry Bureau
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional walnut harvesting and natural drying methods are inefficient, produce poor quality walnuts, are highly susceptible to weather conditions, and lack adequate hygiene.
Design a walnut harvesting device that uses a hot air drying system controlled by a temperature controller, including a filter, a blower, heating wires, and a temperature sensor to ensure drying speed and quality. The device allows for observation of the walnuts' condition through an observation window and supplemental lighting. The device is also portable and easy to move.
It improved the drying speed and quality of walnuts, improved hygiene, avoided the impact of weather, and enhanced production efficiency and product hygiene.
Smart Images
Figure CN224125216U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural product harvesting technology, specifically relating to a walnut harvesting device. Background Technology
[0002] As an important economic crop, the post-harvest processing of walnuts directly affects their quality and economic benefits. Among the many processing steps, drying is a crucial one.
[0003] Currently, fruit farmers mostly use natural air-drying, which involves spreading washed walnuts outdoors on the ground, mats, or rooftops. This method relies heavily on natural conditions and is greatly affected by the weather. During rainy seasons, high humidity makes it difficult for walnuts to reach the ideal dryness level in a short time. Prolonged exposure to a damp environment easily leads to mold and spoilage, fostering harmful molds such as Aspergillus flavus. This not only reduces the safety of the walnuts for consumption but also severely damages their appearance and taste, resulting in a significant decline in quality. Furthermore, during natural air-drying, the walnuts are directly exposed to the air, making them susceptible to dust and impurities, as well as being pecked at by birds and insects, seriously affecting their hygiene and commercial value. Additionally, natural air-drying is time-consuming, typically taking several days or even weeks, severely limiting production efficiency. Utility Model Content
[0004] To address the above problems, the purpose of this utility model is to provide a walnut harvesting device that solves the problems of low efficiency, poor quality, great susceptibility to weather, and insufficient hygiene protection measures in the traditional method of walnut harvesting by natural air drying.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a walnut harvesting device, comprising a trough, a temperature controller installed on the trough, a rear side of the trough being rotatably connected to the rear side of a lower cover via a hinge, an upper cover being installed on the top of the lower cover, the trough and the upper cover being rotatably connected to the two ends of a gas spring, and the axis of the ear holes at both ends of the gas spring being parallel to the axis of the hinge connecting the trough and the lower cover, an air inlet groove being provided on the upper cover, a heating wire being installed inside the upper cover on one side of the air inlet groove, an air distribution hole being provided through the top surface of the lower cover, a cabinet lock being installed on the front side of the lower cover and the trough, a filter screen being installed on the inner side of the trough, a drain valve being installed on the bottom side of the trough, an exhaust fan being installed on the trough below the filter screen and having a slot corresponding to the air inlet of the exhaust fan, and a temperature sensor being installed on the inner wall of the trough above the air inlet of the exhaust fan.
[0006] The beneficial effects of this utility model are as follows: the washed walnuts can be laid on the filter screen to drain water, and after the equipment is closed and the cover is closed, the hot air is dried in a dust-proof and hygienic manner, which effectively improves the drying speed and quality of the walnuts and the hygiene of the product.
[0007] To effectively prevent large floating objects from entering the interior of the tank formed by the tank body, lower cover, and upper cover;
[0008] As a further improvement to the above technical solution: there are multiple air intake slots, and each air intake slot has a filter screen bonded and covered on its surface.
[0009] The beneficial effects of this improvement are: the filter screen can prevent large floating objects from entering the equipment with the airflow and contaminating the surface of the cleaned walnuts.
[0010] To facilitate observation of the walnut drying process;
[0011] As a further improvement to the above technical solution: the side of the lower cover is provided with multiple observation windows adapted to install glass plates.
[0012] The benefits of this improvement are: staff can directly observe the drying process of the walnuts below through the transparent glass installed on the observation window, and a supplementary light can be installed inside the equipment to better observe the surface of the walnuts.
[0013] To ensure the walnuts are dried evenly;
[0014] As a further improvement to the above technical solution: the number of air holes is multiple and evenly distributed on the top surface of the lower cover, and both the upper cover and the lower cover have a cover structure with an open bottom.
[0015] The beneficial effects of this improvement are as follows: after entering the interior of the upper cover through the air inlet slot, the external air is first heated by the heating wire, and then flows out evenly through multiple air distribution holes to dry the walnuts distributed on the filter screen.
[0016] To ensure the quality of dried walnuts;
[0017] As a further improvement to the above technical solution: the temperature controller is electrically connected to the exhaust fan, temperature sensor, and heating wire.
[0018] The beneficial effect of this improvement is that when the hot air temperature fed back by the heating wire exceeds the set threshold, the temperature controller controls the heating wire to cut off the power to avoid the temperature being too high and affecting the quality of walnut drying.
[0019] For easy movement of this device;
[0020] As a further improvement to the above technical solution: multiple support wheels are installed at the bottom corners of the tank.
[0021] The beneficial effects of this improvement are: the entire equipment can be easily moved to a suitable position for use with the support of the support wheels, making it convenient to load and unload walnuts.
[0022] For easy opening and closing of the lower and upper covers;
[0023] As a further improvement to the above technical solution: a handle is installed on the lower cover, and two gas springs are arranged opposite each other on the left and right sides of the groove.
[0024] The beneficial effects of this improvement are: the lower cover and upper cover can be opened with ease and safety with the support of gas springs, and the operator can easily open or close the lower cover and upper cover by holding the handle.
[0025] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0027] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0028] Figure 3 This is a schematic diagram of the structure of the upper cover in this utility model;
[0029] In the diagram: 1. Tank; 2. Support wheel; 3. Lower cover; 4. Upper cover; 5. Gas spring; 6. Air inlet; 7. Heating wire; 8. Cabinet lock; 9. Handle; 10. Thermostat; 11. Drain valve; 12. Exhaust fan; 13. Observation window; 14. Air distribution hole; 15. Filter screen; 16. Temperature sensor. Detailed Implementation
[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.
[0031] Example 1:
[0032] like Figure 1—3 shows a walnut harvesting device, including a trough 1, on which a temperature controller 10 is installed. The rear side of the trough 1 is rotatably connected to the rear side of a lower cover 3 via a hinge. An upper cover 4 is installed on the top of the lower cover 3. The trough 1 and the upper cover 4 are rotatably connected to the two ends of a gas spring 5, and the axis of the ear holes at both ends of the gas spring 5 is parallel to the axis of the hinge connecting the trough 1 and the lower cover 3. An air inlet groove 6 is provided on the upper cover 4. An electric heating wire 7 is installed inside the upper cover 4 on one side of the air inlet groove 6. An air distribution hole 14 is provided through the top surface of the lower cover 3. A cabinet lock 8 is installed on the front side of the lower cover 3 and the trough 1. The inner side of the trough 1… A filter screen 15 is installed, and a drain valve 11 is installed on the bottom side of the tank 1. An exhaust fan 12 is installed on the tank 1 below the filter screen 15, and a slot is opened opposite to the air inlet of the exhaust fan 12. A temperature sensor 16 is installed on the inner wall of the tank 1 above the air inlet of the exhaust fan 12. The washed walnuts can be laid on the filter screen 15 to drain water, and after the equipment is closed with the lower cover 3, it can achieve dust-proof and hygienic hot air drying, effectively improving the drying speed and quality of the walnuts. There are multiple air inlet slots 6, and each air inlet slot 6 is covered with a filter screen. The filter screen can prevent large floating objects from entering the equipment with the airflow and contaminating the washed walnuts. On the surface of the lower cover 3, multiple observation windows 13 adapted to install glass plates are provided on the side. Workers can directly observe the drying process of the walnuts below through the transparent glass installed in the observation windows 13. A supplementary light can also be installed inside the equipment for better observation of the walnut surface. Multiple air vents 14 are evenly distributed on the top surface of the lower cover 3. Both the upper cover 4 and the lower cover 3 have a bottom-opening structure. External air enters the interior of the upper cover 4 through the air inlet 6, is first heated by the heating wire 7, and then flows out evenly through the multiple air vents 14 to dry the walnuts distributed on the filter screen 15. The temperature controller 10 is electrically connected to an exhaust fan. The equipment includes a temperature sensor 16, a heating wire 7, and a temperature controller 10. When the hot air temperature fed back by the heating wire 7 exceeds the set threshold, the heating wire 7 is de-energized to prevent the temperature from being too high and affecting the quality of walnut drying. Multiple support wheels 2 are installed at the bottom corners of the tank 1, allowing the entire equipment to be easily moved to a suitable position for use with the support of the support wheels 2, facilitating the loading and unloading of walnuts. A handle 9 is installed on the lower cover 3. There are two gas springs 5, which are arranged opposite each other on the left and right sides of the tank 1. The lower cover 3 and the upper cover 4 can be opened easily and safely with the support of the gas springs 5. The operator can hold the handle 9 to easily open or close the lower cover 3 and the upper cover 4.
[0033] The working principle of this technical solution is as follows: After harvesting, the walnuts are placed above the filter screen 15 in the tank 1 and manually brushed. During the washing process, the dirt and green skin on the surface of the walnuts will settle to the bottom of the tank 1 with the water flow. After washing, the drain valve 11 is opened to drain the wastewater. The walnuts are then spread evenly on the filter screen 15. Holding the handle 9, and supported by the gas spring 5, the lower cover 3 and the upper cover 4 are closed with ease and safety. The cabinet lock 8 is used to lock them, making the equipment form a relatively closed space. The exhaust fan 12 and the heating wire 7 are started. Outside air enters the interior of the upper cover 4 through the air inlet slot 6. Since the surface of the air inlet slot 6 is covered with a filter screen, large floating objects from the outside can be prevented from entering the equipment with the airflow and contaminating the surface of the washed walnuts. The air entering the upper cover 4 is first heated by the heating wire 7 to form hot air. The hot air passes through the top surface of the lower cover 3. The evenly distributed air holes 14 on the top allow air to flow out evenly, drying the walnuts distributed on the filter screen 15. During the drying process, the temperature sensor 16 monitors the outlet air temperature of the equipment in real time and feeds the temperature signal back to the temperature controller 10. When the hot air temperature fed back by the heating wire 7 exceeds the set threshold, the temperature controller 10 controls the heating wire 7 to cut off the power to avoid the temperature from being too high and affecting the drying quality of the walnuts. When the temperature is lower than the set value, the temperature controller 10 controls the heating wire 7 to turn on the power again to ensure that the internal temperature of the equipment is stable within a suitable range. The staff can directly observe the drying of the walnuts below through the transparent glass installed on the observation window 13. If necessary, a supplementary light can also be installed inside the equipment to better observe the surface of the walnuts. The entire equipment can be easily moved to a suitable position for use with the support of the support wheels 2, making it convenient to load and unload the walnuts.
[0034] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.
Claims
1. A walnut harvesting device, characterized by: The system includes a tank (1) on which a thermostat (10) is installed. The rear side of the tank (1) is rotatably connected to the rear side of a lower cover (3) via a hinge. An upper cover (4) is installed on the top of the lower cover (3). The tank (1) and the upper cover (4) are rotatably connected to the two ends of a gas spring (5), and the axis of the ear holes at both ends of the gas spring (5) is parallel to the axis of the hinge connecting the tank (1) and the lower cover (3). An air inlet groove (6) is provided on the upper cover (4), and an air inlet groove (6) is installed in the upper cover (4) on one side of the air inlet groove (6). The lower cover (3) is equipped with a heating wire (7), and a ventilation hole (14) is opened through the top surface of the lower cover (3). A cabinet lock (8) is installed on the front side of the lower cover (3) and the trough (1). A filter screen (15) is installed on the inner side of the trough (1). A drain valve (11) is installed on the bottom side of the trough (1). An exhaust fan (12) is installed on the trough (1) below the filter screen (15) and a slot is opened opposite to the air inlet of the exhaust fan (12). A temperature sensor (16) is installed on the inner wall of the trough (1) above the air inlet of the exhaust fan (12).
2. The walnut harvesting device of claim 1, wherein: There are multiple air intake slots (6), and each air intake slot (6) has a filter screen bonded and covered on its surface.
3. The walnut harvesting device according to claim 1, characterized in that: The lower cover (3) has multiple observation windows (13) on its side for mounting glass plates.
4. The walnut harvesting device of claim 1, wherein: The number of air holes (14) is multiple and evenly distributed on the top surface of the lower cover (3). Both the upper cover (4) and the lower cover (3) have a cover structure with an open bottom.
5. The walnut harvesting device of claim 1, wherein: The temperature controller (10) is electrically connected to the exhaust fan (12), the temperature sensor (16), and the heating wire (7).
6. The walnut harvesting device of claim 1, wherein: Multiple support wheels (2) are installed at the bottom corners of the trough (1).
7. The walnut harvesting device of claim 1, wherein: The lower cover (3) is equipped with a handle (9), and the number of gas springs (5) is two and they are arranged opposite each other on the left and right sides of the groove (1).