A walnut kernel detection device based on near-infrared spectroscopy

Abstract

The utility model relates to a walnut kernel detection device based on near infrared spectrum, including base, rubbing crusher, near infrared spectrometer, electric slide rail and mobile platform, be provided with rubbing crusher for rubbing walnut kernel on the base, be provided with electric slide rail on the base and be located rubbing crusher front side, the mobile platform is slidably arranged on the electric slide rail, the side of mobile platform close to rubbing crusher extends to the below of rubbing crusher output, the locating hole that is located the below of rubbing crusher output is opened on the mobile platform, the quartz cup is placed in the inboard of locating hole, the cup mouth of quartz cup is flush with the upper surface on the mobile platform, the walnut kernel that rubbing crusher rubs falls from the output to the inboard of quartz cup, be provided with quartz cup ejector under near infrared spectrometer on the base, utilize near infrared spectrum technique, can quickly through walnut kernel powder and carry out detection, compared with traditional detection method such as kjeldahl method, soxhlet extraction method, greatly shorten the detection time, improve the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of near-infrared spectroscopy detection technology, specifically a walnut kernel detection device based on near-infrared spectroscopy. Background Technology

[0002] Near-infrared spectroscopy primarily records the absorption of overtones and combination frequencies of hydrogen-containing group vibrations due to the anharmonicity of molecular vibrations transitioning from the ground state to higher energy levels. Its wavelength range is 780 nm to 2526 nm, and it can be used to detect multiple components within the same substance. Near-infrared spectroscopy can effectively and rapidly penetrate biological samples under various complex physical conditions, offering advantages such as high speed, no loss, high precision, good signal-to-noise ratio, and environmental safety. Its application in international industry has developed rapidly.

[0003] Walnuts possess both economic and medicinal value. Their leaves, stems, and other tissues can be used medicinally to prevent coronary heart disease, while the kernels are rich in minerals, protein, and fat, exhibiting high nutritional and health benefits, and offering protection against diseases such as lung cancer and breast cancer. Protein and fat content are important indicators for evaluating walnut quality. Currently, most methods for detecting internal quality indicators in walnuts employ classic methods such as the Kjeldahl method and Soxhlet extraction. While these methods meet national standards for accuracy, they suffer from drawbacks such as the high toxicity of reagents (e.g., phenol, concentrated sulfuric acid) and the time-consuming nature of single-sample testing. Therefore, this application provides a walnut kernel detection device based on near-infrared spectroscopy. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a walnut kernel detection device based on near-infrared spectroscopy, addressing the above-mentioned shortcomings.

[0005] To solve the above technical problems, the present invention adopts the following technical solution:

[0006] A walnut kernel detection device based on near-infrared spectroscopy includes a base, a crusher, a near-infrared spectrometer, an electric slide rail, and a moving platform. The base is equipped with a crusher for crushing walnut kernels. An electric slide rail is located in front of the crusher on the base. A moving platform slides along the electric slide rail, extending from the side of the moving platform near the crusher to below the crusher's output port. A positioning hole is formed on the moving platform directly below the crusher's output port. A quartz cup for storing walnut kernel powder is placed inside the positioning hole. The rim of the quartz cup is flush with the upper surface of the moving platform. The crushed walnut kernels fall from the output port into the quartz cup. The electric slide rail is used to move the quartz cup filled with walnut kernel powder to the near-infrared spectrometer's detection end via the moving platform for detection. A quartz cup ejector is located below the near-infrared spectrometer on the base, used to eject the quartz cup from inside the positioning hole.

[0007] Furthermore, the mobile platform is equipped with a push cylinder that moves horizontally toward the crusher. A storage basket is provided between the mobile platform and the crusher. The upper surface of the storage basket is lower than the mobile platform. The push cylinder is used to push excess walnut kernel powder from the inside of the quartz cup into the storage basket.

[0008] Furthermore, a flange for supporting the quartz cup is provided at the bottom inner side of the positioning hole.

[0009] Furthermore, the quartz cup ejector includes a fixed base, a connecting rod, a roller, and a tension spring. A fixed rod is vertically mounted on the fixed base, and the upper end of the fixed rod is hinged to the middle of the connecting rod. A tension spring is mounted on the fixed base, and the upper end of the tension spring is connected to the lower end of the connecting rod. The tension spring is used to keep the connecting rod in an inclined state. The upper end of the connecting rod has a roller that can rotate around a horizontal axis. When the moving platform moves to below the near-infrared spectrometer, the roller makes rolling contact with the lower surface of the moving platform. At this time, the tension spring is in a stretched state. The roller is used to roll and lift the quartz cup when it moves to below the positioning hole.

[0010] Furthermore, a light-shielding protective cover is hinged to the base, and the light-shielding protective cover can rotate around the base in a vertical plane. The light-shielding protective cover is used to completely cover the near-infrared spectrometer and the moving platform during near-infrared spectrometer detection.

[0011] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0012] This invention utilizes near-infrared spectroscopy technology to rapidly detect walnut kernel powder, significantly shortening detection time and improving efficiency compared to traditional methods such as Kjeldahl and Soxhlet extraction. Through the coordinated operation of components including a crusher, electric slide rail, moving platform, and quartz cup ejector, the entire process of walnut kernel crushing, powder collection, movement, detection, and quartz cup ejection is automated, reducing manual intervention and improving detection accuracy and consistency. A pusher cylinder on the moving platform pushes excess walnut kernel powder from the inside of the quartz cup to the inside of the collection basket, facilitating cleaning and recycling and maintaining a clean working environment. The light-shielding protective cover effectively reduces interference from external light on near-infrared spectroscopy detection, improving detection accuracy and signal-to-noise ratio.

[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2This is a three-dimensional structural diagram of the present invention (the light-shielding protective cover is omitted);

[0016] Figure 3 This is a schematic diagram showing the connection between the sanding roller pressure plate and the sanding roller;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0018] Figure 5 Top view of the mobile platform;

[0019] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Base; 2. Crusher; 3. Near-infrared spectrometer; 4. Electric slide rail; 5. Moving platform; 6. Positioning hole; 7. Quartz cup; 8. Quartz cup ejector; 801. Fixed base; 802. Connecting rod; 803. Roller; 804. Tension spring; 9. Push cylinder; 10. Storage basket; 11. Flange; 12. Light-shielding protective cover. Detailed Implementation

[0022] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0024] like Figure 1-6As shown, a walnut kernel detection device based on near-infrared spectroscopy includes a base 1, a crusher 2, a near-infrared spectrometer 3, an electric slide rail 4, and a moving platform 5. The crusher 2 for crushing walnut kernels is mounted on the base 1. An electric slide rail 4 is located in front of the crusher 2 on the base 1. The moving platform 5 is slidably mounted on the electric slide rail 4. The side of the moving platform 5 closest to the crusher 2 extends below the output port of the crusher 2. A positioning hole 6 is provided on the moving platform 5, located directly below the output port of the crusher 2. A quartz cup 7 for storing walnut kernel powder is placed inside the positioning hole 6. The mouth of the quartz cup 7 is flush with the upper surface of the moving platform 5. The walnut kernels crushed by the crusher 2 fall from the output port into the inside of the quartz cup 7. The electric slide rail 4 is used to move the quartz cup 7 filled with walnut kernel powder to the detection end of the near-infrared spectrometer 3 via the moving platform 5 for detection. A quartz cup ejector 8 is provided on the base 1 below the near-infrared spectrometer 3. The quartz cup ejector 8 is used to eject the quartz cup 7 from inside the positioning hole 6.

[0025] In one embodiment, the mobile platform 5 is provided with a push cylinder 9 that moves horizontally toward the crusher 2. A storage basket 10 is provided between the mobile platform 5 and the crusher 2. The upper surface of the storage basket 10 is lower than the mobile platform 5. The push cylinder 9 is used to push excess walnut kernel powder inside the quartz cup 7 into the storage basket 10.

[0026] In one embodiment, a flange 11 for supporting the quartz cup 7 is provided on the bottom inner side of the positioning hole 6.

[0027] In one embodiment, the quartz cup ejector 8 includes a fixed base 801, a connecting rod 802, a roller 803, and a tension spring 804. A fixed rod is vertically mounted on the fixed base 801, and the upper end of the fixed rod is hinged to the middle of the connecting rod 802. A tension spring 804 is mounted on the fixed base 801, and the upper end of the tension spring 804 is connected to the lower end of the connecting rod 802. The tension spring 804 is used to keep the connecting rod 802 in an inclined state. The upper end of the connecting rod 802 has a roller 803, which can rotate around a horizontal axis. When the moving platform 5 moves below the near-infrared spectrometer 3, the roller 803 rolls in contact with the lower surface of the moving platform 5. At this time, the tension spring 804 is in a stretched state. The roller 803 is used to roll and lift the quartz cup 7 when it moves below the positioning hole 6.

[0028] In one embodiment, a light-shielding protective cover 12 is hinged to the base 1. The light-shielding protective cover 12 can rotate around the base 1 in a vertical plane. The light-shielding protective cover 12 is used to completely cover the near-infrared spectrometer 3 and the moving platform 5 during the near-infrared spectrometer 3 detection.

[0029] In this invention, the near-infrared spectrometer 3 is electrically connected to an external display, and the data detected by the near-infrared spectrometer 3 is displayed on the external display. A fixed bracket is provided on the base 1, and the near-infrared spectrometer 3 is mounted on the fixed bracket in a suspended state. A position sensor is provided on one side of the electric slide rail 4 to determine the movement of the moving platform 5.

[0030] The working process of this utility model is as follows: An empty quartz cup 7 is placed in the positioning hole 6 of the moving platform 5, and the walnut kernels to be tested are placed into the grinder 2. The grinder 2 is turned on to grind the walnut kernels into powder. The ground walnut kernel powder falls from the output port of the grinder 2 into the quartz cup 7 in the positioning hole 6. The pushing cylinder 9 on the moving platform 5 is activated to flatten the walnut kernel powder inside the quartz cup 7, ensuring a smooth powder surface for subsequent testing. The pushing cylinder 9 pushes excess walnut kernel powder into the collection basket 10 located below the grinder 2, keeping the working area clean. The electric slide rail 4 is activated, moving the moving platform 5 and the quartz cup 7 containing the walnut kernel powder to below the detection end of the near-infrared spectrometer 3. At this point, the moving platform 5 presses against the connecting rod 802, causing the upper end of the connecting rod 802 to be below the moving platform 5. The tension spring 804 is under tension, and the roller 803 is in close contact with the lower surface of the moving platform 5 through the tension spring 804. The light-shielding protective cover 12 is manually lowered to completely enclose the near-infrared spectrometer 3 and the moving platform 5, reducing interference from external light. The near-infrared spectrometer 3 is activated to detect the walnut kernel powder in the quartz cup 7, recording spectral data such as the overtone and combination frequency absorption of hydrogen-containing group vibrations. After the detection is completed, the near-infrared spectrometer 3 is turned off, and the light-shielding protective cover 12 is manually raised. The electric slide rail 4 drives the moving platform 5 to continue moving to the designated position. At this time, the roller 803 rolls to below the positioning hole 6, the tension spring 804 resets, and pulls the upper end of the connecting rod 802 upward. The connecting rod 802 drives the roller 803 upward, smoothly pushing out the quartz cup 7 in the positioning hole 6, making it easy to manually remove the tested quartz cup 7 from the moving platform 5, ready for the next detection or processing of the tested walnut kernel powder. Repeat the above steps to test the next batch of walnut kernels.

[0031] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A walnut kernel detection device based on near-infrared spectroscopy, characterized in that, The device includes a base (1), a crusher (2), a near-infrared spectrometer (3), an electric slide rail (4), and a moving platform (5). The crusher (2) for crushing walnut kernels is mounted on the base (1). An electric slide rail (4) located in front of the crusher (2) is mounted on the base (1). A moving platform (5) is slidably mounted on the electric slide rail (4). The side of the moving platform (5) closest to the crusher (2) extends to below the output port of the crusher (2). A positioning hole (6) is provided on the moving platform (5) located directly below the output port of the crusher (2). The inner side of the positioning hole (6) is used to place... There is a quartz cup (7) for storing walnut kernel powder. The mouth of the quartz cup (7) is flush with the upper surface of the moving platform (5). The walnut kernels crushed by the crusher (2) fall from the output port into the inside of the quartz cup (7). The electric slide rail (4) is used to move the quartz cup (7) filled with walnut kernel powder to the detection end of the near-infrared spectrometer (3) for detection via the moving platform (5). The base (1) is provided with a quartz cup ejector (8) located below the near-infrared spectrometer (3). The quartz cup ejector (8) is used to eject the quartz cup (7) from the inside of the positioning hole (6).

2. The walnut kernel detection device based on near-infrared spectroscopy according to claim 1, characterized in that, The mobile platform (5) is equipped with a push cylinder (9) that moves horizontally toward the crusher (2). A storage basket (10) is provided between the mobile platform (5) and the crusher (2). The upper surface of the storage basket (10) is lower than the mobile platform (5). The push cylinder (9) is used to push the excess walnut kernel powder inside the quartz cup (7) into the storage basket (10).

3. The walnut kernel detection device based on near-infrared spectroscopy according to claim 1, characterized in that, The bottom inner side of the positioning hole (6) is provided with a flange (11) for supporting the quartz cup (7).

4. The walnut kernel detection device based on near-infrared spectroscopy according to claim 1, characterized in that, The quartz cup ejector (8) includes a fixed base (801), a connecting rod (802), a roller (803), and a tension spring (804). A fixed rod is vertically mounted on the fixed base (801), and the upper end of the fixed rod is hinged to the middle of the connecting rod (802). A tension spring (804) is mounted on the fixed base (801), and the upper end of the tension spring (804) is connected to the lower end of the connecting rod (802). The tension spring (804) is used to hold the connecting rod... (802) Maintaining an inclined state, the upper end roller (803) of the connecting rod (802) can rotate around a horizontal axis. When the moving platform (5) moves to below the near-infrared spectrometer (3), the roller (803) rolls and contacts the lower surface of the moving platform (5). At this time, the tension spring (804) is in a stretched state. The roller (803) is used to roll and lift the quartz cup (7) when it moves to below the positioning hole (6).

5. The walnut kernel detection device based on near-infrared spectroscopy according to claim 1, characterized in that, A light-shielding protective cover (12) is hinged on the base (1). The light-shielding protective cover (12) can rotate around the base (1) in a vertical plane. The light-shielding protective cover (12) is used to completely cover the near-infrared spectrometer (3) and the moving platform (5) during the near-infrared spectrometer (3) detection.

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