A wolfberry fruit grading and screening device

Abstract

The utility model relates to a kind of goji berry grading screening devices. Goji berry grading screen device includes sieve frame main part and at least two layers of sieve hole diameter different screen mesh assemblies, each layer The screen mesh assembly is horizontally spaced in the sieve frame main part, each layer The screen mesh assembly includes metal net body and fixed border, Several regular hexagon screening holes are distributed on the metal net body, The sieve frame main part inner wall is equipped with clamping groove, The fixed border is detachably connected with The sieve frame main part by clamping groove, Vibration mechanism is installed in the sieve frame main part bottom. Thus by using multilayer screen mesh synchronous screening, At least two levels of classification can be completed in one operation, and under the cooperation of vibration mechanism, The screening efficiency is effectively improved.

Description

Technical Field

[0001] This application relates to the field of wolfberry processing technology, and in particular to a wolfberry fruit grading and screening device. Background Technology

[0002] In the continuous upgrading of the goji berry industry, fresh-locked goji berries are highly favored by the market due to their ability to retain nutrients and natural flavor to the maximum extent. However, the fresh fruit used for fresh-locked goji berries needs to be screened for appearance and size. Currently, the widely used goji berry screening method is a square-hole wire mesh grading sieve. However, this method has several key problems in practical application, including: First, insufficient grading accuracy: the traditional square-hole design is poorly adapted to the natural shape of goji berries, seriously affecting the uniformity of grading; second, risk of material damage: the surface smoothness of the wire mesh is insufficient, making the goji berries susceptible to friction damage during grading, thus damaging the skin of the fresh-locked goji berries; finally, short equipment lifespan: the wire mesh material has weak corrosion resistance and is prone to rust, which not only shortens the sieve's lifespan but may also contaminate the material, reducing product cleanliness. Utility Model Content

[0003] Based on this, it is necessary to design a stainless steel grading screen with hexagonal holes of different grades to address the aforementioned problems of the current goji berry screening screen. The aim is to solve the shortcomings of the traditional grading screen through hole optimization and material upgrade, and to meet the urgent needs of the goji berry industry for high-quality, high-precision, and high-efficiency grading equipment.

[0004] A goji berry grading and screening device includes a sieve frame body and at least two layers of sieve assemblies. Each layer of sieve assemblies is horizontally spaced within the sieve frame body. Each layer of sieve assemblies includes a metal mesh and a fixed frame. The metal mesh has a plurality of regular hexagonal screening holes. The inner wall of the sieve frame body is provided with a slot. The fixed frame is detachably connected to the sieve frame body through the slot. A vibration mechanism is installed at the bottom of the sieve frame body to control the goji berry screening speed.

[0005] In one embodiment, the fixed frame is fixedly connected to the edge of the metal mesh by a pressure strip, and the pressure strip is detachably connected to the fixed frame.

[0006] In one embodiment, the regular hexagonal screening holes are evenly distributed in an array on the metal mesh, and the spacing between adjacent screening holes is 1 to 3 mm.

[0007] In one embodiment, the diagonal distance of the screening holes is 6.1 to 10 mm.

[0008] In one embodiment, the metal mesh is made by punching holes in a stainless steel sheet with a thickness of 1 to 2 mm.

[0009] In one embodiment, the top of the screen frame body is provided with a feed hopper, and the bottom of the feed hopper is provided with an adjustable flow gate valve.

[0010] In one embodiment, each layer of the screen assembly has a discharge port on one side of its fixed frame, and the discharge port is provided with an inclined guide plate.

[0011] In one embodiment, the screen frame body has support legs at the four bottom corners, and the bottom of the support legs is equipped with height-adjustable shock-absorbing pads.

[0012] In one embodiment, the vibration mechanism includes a vibration motor and an elastic connector, wherein the vibration motor is connected to the bottom of the screen frame body through the elastic connector.

[0013] In one embodiment, the vibration frequency of the vibration motor is adjustable in the range of 30-50Hz.

[0014] The aforementioned goji berry grading and screening device, by employing multi-layer sieves for simultaneous screening, can complete at least two levels of grading in one operation, effectively improving screening efficiency and solving the problem of traditional single-layer sieves requiring multiple screenings. At the same time, by adopting a regular hexagonal screening hole structure, it avoids the "principle tripping" phenomenon caused by right angles, and in conjunction with an adjustable frequency vibration mechanism, it can effectively reduce the damage rate of goji berries. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural schematic diagram of a wolfberry fruit grading and screening device according to an embodiment; Figure 2 is a partial structural schematic diagram of a screen assembly according to an embodiment; Figure 3 is Figure 1 A magnified view of part A. Detailed Implementation

[0016] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0017] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] See Figure 1 and Figure 2 One embodiment of this application provides a goji berry grading and screening device 10, including a sieve frame body 100 and at least two layers of sieve mesh assemblies 200 with different sieve hole diameters. Each layer of sieve mesh assemblies 200 is horizontally spaced within the sieve frame body 100. Each layer of sieve mesh assembly 200 includes a metal mesh body 210 and a fixed frame 220. The metal mesh body 210 has a plurality of regular hexagonal screening holes 211 distributed on it. The inner wall of the sieve frame body 100 is provided with a slot 110. The fixed frame 220 is detachably connected to the sieve frame body 100 through the slot 110. A vibration mechanism 300 is installed at the bottom of the sieve frame body 100 to control the goji berry screening speed.

[0023] Specifically, the sieve frame body 100 is the main support structure of the goji berry grading and screening device, used to stably install multi-layer sieve mesh components 200 with different mesh diameters to achieve goji berry grading and screening. In one embodiment, the sieve frame body 100 is a rectangular metal frame, with a slot 110 formed on the inner wall of the top of the metal frame. The slot 110 is adapted to the size of the fixed frame 220. Thus, the fixed frame 220 is stably installed on the sieve frame body 100 by setting the slot 110. Further, see... Figure 3 The outer wall of the screen frame body 100 is equipped with multiple sets of clamping assemblies 120. Each set of clamping assemblies 120 includes a rotating clamp 121 and a hook 122 that is movably engaged with the rotating clamp. Specifically, one end of the rotating clamp 121 is movably mounted on the outer wall of the screen frame body 100, the hook 122 is mounted on the fixed frame 220, and the other end of the rotating clamp 121 is movably engaged with the hook 122. In this way, by setting the rotating clamp 121 and the hook 122 that are connected in a cooperative manner, the multi-layer screen assembly 200 can be more stably installed on the screen frame body 100.

[0024] Specifically, the metal mesh 210 is used to hold the goji berries to be screened. Furthermore, the metal mesh 210 has several hexagonal screening holes 211 distributed on it. That is, the goji berries are screened through the hexagonal screening holes 211 to obtain goji berries of different sizes, effectively avoiding the "principle tripping" phenomenon caused by right angles. In the experimental process, the inventors obtained the following results from multiple experiments: the screening results of goji berries using a sieve with hexagonal screening holes 211 and a traditional square sieve are shown in Table 1 below. Table 1 - Comparison Results of Sieve Size Screening Square sieve holes (side length 1 cm) Significant size differences were observed, with both standard-sized goji berries (0.8-1mm) and oversized berries (1.1-1.4mm) mixed in. Hexagonal sieve apertures (1 cm distance between opposite sides) The size is more concentrated, mainly 0.8-1.15mm goji berries, with almost no individuals larger than 1.2mm, making the goji berries in the pile "more uniform in size". Specifically, the fixed frame 220 is a supporting frame around the periphery of the metal mesh 210, used to stably support the frame of the metal mesh 210 with a plurality of regular hexagonal screening holes 211. In one embodiment, the fixed frame 220 is fixedly connected to the edge of the metal mesh 210 by a pressure strip 230, which is detachably connected to the fixed frame 220. This pressure strip design strengthens the edge of the metal mesh 210, thus facilitating a more stable fit and installation with the fixed frame 220. Furthermore, the metal mesh 210 is made of perforated stainless steel sheet with a thickness of 1-2 mm. That is, the plurality of regular hexagonal screening holes 211 on the metal mesh 210 are perforated using thin stainless steel sheet. Thus, compared to the square screening holes constructed from traditional wire mesh that is prone to rust, stainless steel mesh is less prone to corrosion and has a longer service life, requiring replacement only once every 8 years, while existing wire mesh mesh requires replacement every 2 years, resulting in higher equipment maintenance costs.

[0025] In one embodiment, the hexagonal screening holes 211 are uniformly distributed in an array on the metal mesh 210, with a spacing of 1–3 mm between adjacent screening holes 211. Preferably, the spacing between adjacent screening holes 211 is 1.5 mm. In one embodiment, the diagonal distance of the screening holes 211 is 6.1–10 mm. Preferably, the diagonal distance of the screening holes 211 is 7.5 mm.

[0026] To accelerate the screening speed of goji berries, in one embodiment, the vibration mechanism 300 includes a vibration motor 310 and an elastic connector 320. The vibration motor 310 is connected to the bottom of the sieve frame body 100 via the elastic connector 320. The elastic connector 320 includes a spring. By using the elastic connector, the collision force between goji berries on the sieve screen caused by mechanical vibration can be effectively reduced, thus reducing the goji berry loss rate. Further, the vibration frequency of the vibration motor 310 is adjustable in the range of 30-50Hz. Preferably, the vibration frequency of the vibration motor 310 is adjustable in the range of 38Hz. Experiments have shown that within this range, the screening efficiency of goji berries can be improved, while the goji berry loss rate can also be effectively controlled. In one embodiment, the sieve frame body 100 has support legs 130 at its four corners, and height-adjustable shock-absorbing pads 140 are installed at the bottom of each support leg. In this way, by further installing shock-absorbing pads 140 on the support legs 130 of the screen frame body 100, the mechanical vibration noise generated during the screening of goji berries can be effectively reduced, and at the same time, it is beneficial to protect the service life of the entire goji berry grading and screening device.

[0027] To effectively improve the grading and screening results of goji berries, please refer to [link / reference]. Figure 1 In one embodiment, the top of the screen frame body 100 is provided with a feed hopper 150, and the bottom of the feed hopper 150 is provided with an adjustable flow gate valve 160. The feed hopper is an open-end trough, and the gate valve 160 is an electric valve, installed on the mounting surfaces of the feed hopper and the screen frame body. In one embodiment, each layer of the screen assembly has a discharge port 240 on one side of its fixed frame 220, and an inclined guide plate 250 is provided at the discharge port. That is, a discharge port is opened at the end of the fixed frame 220 of each layer of screen away from the feed hopper, thereby screening and recovering the remaining goji berries from each layer of screen. Specifically, during the goji berry screening process, the feeding speed of the goji berries is controlled at 80 kg / h via a gate valve 160. The goji berries to be screened enter the upper screen from the feed hopper 150. Under vibration, smaller diameter goji berries fall through the upper screen to the lower screen, while larger diameter goji berries are discharged from the upper screen outlet 240. Goji berries falling into the lower screen are discharged through its outlet. It should be noted that the number of screening levels can be adjusted by designing screens with different aperture standards to achieve multiple screening levels based on actual production needs.

[0028] The aforementioned goji berry grading and screening device, by employing multi-layer sieves for simultaneous screening, can complete at least two levels of grading in one operation, effectively improving screening efficiency and solving the problem of traditional single-layer sieves requiring multiple screenings. At the same time, by adopting a regular hexagonal screening hole structure, it avoids the "principle tripping" phenomenon caused by right angles, and in conjunction with an adjustable frequency vibration mechanism, it can effectively reduce the damage rate of goji berries.

[0029] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A goji berry grading and screening device, comprising a sieve frame body and at least two layers of sieve mesh assemblies with different sieve aperture diameters, wherein each layer of sieve mesh assemblies is horizontally spaced within the sieve frame body, characterized in that: Each layer of the screen assembly includes a metal mesh body and a fixed frame. The metal mesh body has a plurality of regular hexagonal screening holes. The inner wall of the screen frame body is provided with a slot. The fixed frame body is detachably connected to the screen frame body through the slot. A vibration mechanism is installed at the bottom of the screen frame body to control the screening speed of goji berries.

2. The wolfberry fruit grading and screening device according to claim 1, characterized in that, The fixed frame is fixedly connected to the edge of the metal mesh by a pressure strip, and the pressure strip is detachably connected to the fixed frame.

3. The wolfberry fruit grading and screening device according to claim 1, characterized in that, The hexagonal screening holes are evenly distributed in an array on the metal mesh, and the spacing between adjacent screening holes is 1 to 3 mm.

4. The wolfberry fruit grading and screening device according to claim 1, characterized in that, The diagonal distance between the screening holes is 6.1 to 10 mm.

5. The wolfberry fruit grading and screening device according to claim 1, characterized in that, The metal mesh is made by punching holes in a stainless steel sheet with a thickness of 1-2 mm.

6. The wolfberry fruit grading and screening device according to claim 1, characterized in that, The screen frame body is provided with a feed hopper at the top and an adjustable flow gate valve at the bottom of the feed hopper.

7. The wolfberry fruit grading and screening device according to claim 1, characterized in that, Each layer of the screen assembly has a discharge port on one side of its fixed frame, and an inclined guide plate is provided at the discharge port.

8. The wolfberry fruit grading and screening device according to claim 1, characterized in that, The screen frame body has support legs at the four corners of its bottom, and the bottom of the support legs is equipped with height-adjustable shock-absorbing pads.

9. The wolfberry fruit grading and screening device according to claim 1, characterized in that, The vibration mechanism includes a vibration motor and an elastic connector, and the vibration motor is connected to the bottom of the screen frame body through the elastic connector.

10. The wolfberry fruit grading and screening device according to claim 9, characterized in that, The vibration frequency of the vibrating motor is adjustable in the range of 30-50Hz.

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