Pickled vegetable sorting equipment based on cooperation of vibration and wind power

Abstract

The utility model discloses pickled vegetable sorting equipment based on cooperation of vibration and wind power. The pickled vegetable sorting equipment comprises a vibration table, a screening box and a cooperative sorting system, the vibrating table is connected with the screening box through adjustable damping springs, double-layer screens are obliquely arranged in the screening box, the aperture of the upper-layer screen is larger than that of the lower-layer screen, the surfaces of the screens are coated with anti-adhesion coatings, and the distance between the screens is kept through elastic supporting pieces. The vibrators are symmetrically arranged on the two sides of the box body and drive materials to move spirally. The air blowing mechanism introduces graded air flow through an independently-controlled double-layer air inlet, the pulse cleaning mechanism is combined to reversely blow the screen, and three-stage separation of light impurities, qualified products and heavy salt particles is achieved. According to the equipment, the problem of screening blockage of high-salt viscous materials is effectively solved through dynamic cooperation of vibration directional throwing and differential airflow, and the equipment has the advantages of rapid screen replacement, self-adaptive adjustment and low breakage rate and is suitable for large-scale pickled vegetable processing.

Description

Technical Field

[0001] This utility model relates to the field of vegetable processing technology, and in particular to a sorting device for pickled vegetables based on the synergy of vibration and wind power. Background Technology

[0002] In the processing of pickled vegetables, raw material sorting is a crucial step affecting product quality. Traditional sorting equipment often uses single vibrating screens or air separation technology, which has the following technical bottlenecks: 1. Low screening efficiency: Pickled vegetables, due to their high salt content and abundant surface mucus, easily cause screens to stick and clog, especially for juicy vegetables (such as kimchi and pickled vegetables), where the screen clogging rate can reach over 30%, requiring frequent shutdowns for cleaning. 2. Poor sorting accuracy: A single vibrating screen is difficult to separate light debris (such as chili seeds, stem and leaf fragments) and heavy salt particles that are similar in size to qualified products; while simple air separation can easily damage vegetables sensitive to moisture content, and uneven airflow distribution can lead to the residue of light impurities. 3. Weak equipment adaptability: Existing screens are mostly of fixed structure, making it impossible to quickly change the screen aperture size according to material characteristics (such as different sizes of radish chunks, cucumber strips, etc.); the static adjustment of vibration parameters and wind speed is difficult to match with dynamic changes in feed rate. 4. High maintenance costs: Screen cleaning relies on manual knocking or high-pressure water washing, which can easily damage the screen surface coating, leading to a decrease in anti-sticking performance and an average equipment failure interval of less than 200 hours.

[0003] To address the aforementioned issues, existing technologies such as CN219850749 use a vibrator to drive a vibrating box and screen to vibrate, and a drive motor to drive a rotating rod and screen to rotate. When the automated conveyor delivers vegetables and they fall onto the center of the screen, the sorting machine achieves screen rotation while vibrating. However, it lacks a dynamic unclogging mechanism. Therefore, there is an urgent need to develop a collaborative sorting solution that balances sorting efficiency, anti-clogging performance, and equipment durability. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a pickling vegetable sorting device based on the synergy of vibration and wind power.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a sorting device for pickled vegetables based on the synergy of vibration and wind power, comprising: a vibrating table with a shock-absorbing assembly on its surface, the shock-absorbing assembly including symmetrically arranged shock-absorbing springs, the spring stiffness of which is continuously adjustable via adjusting bolts; a screening box fixed to the vibrating table, with an inclined feed inlet at the top and a large material outlet, a qualified product outlet, and a heavy impurity outlet sequentially opened along the material movement direction on one side of the bottom, the heavy impurity outlet being located at the center of the bottom of the screening box and equipped with an inclined guide plate; and a screen assembly including a first screen installed at an incline and a second screen arranged parallel below it, the aperture of the first screen being larger than that of the second screen, the two screens being spaced apart by an elastic support member, and the screens... The surface is coated with a polytetrafluoroethylene anti-adhesion layer; a vibrator is symmetrically fixed to the two side walls of the screening box, and its excitation force direction is at an acute angle to the screen plane, and the vibration frequency and amplitude are adjustable; a blower mechanism includes an independently controlled first air inlet channel and a second air inlet channel, which are respectively connected to the double-layer air inlet on the side wall of the screening box, and the two channels are equipped with an airflow equalization device and a detachable dust filter; a pulse cleaning mechanism includes jet heads distributed alternately along the length of the screen, a high-pressure air source connected to the jet heads, and a pulse controller that controls the intermittent blowing of the jet heads, and the jet direction of the jet heads is at a preset angle to the screen plane; a flow guide device is connected to the outside of the lightweight impurity discharge port of the screening box, and its outlet end is equipped with an anti-backflow baffle.

[0007] As a preferred technical solution of this utility model, the first screen and the second screen are detachable modular structures, and their edges are fixed by spring locks or snap-fit ​​quick locking mechanisms. The screen surface is provided with wear-resistant reinforcing ribs arranged along the material movement direction. The screen assembly supports the replacement of screens with different aperture specifications.

[0008] As a preferred technical solution of this utility model, the screening box is provided with an airflow guide plate located between the air inlet and the screen. The airflow guide plate achieves continuous adjustment of the opening ratio and tilt angle through a hinge shaft or slide rail structure, and the guide plate is provided with staggered flow guide holes.

[0009] As a preferred technical solution of this utility model, the first air inlet channel and the second air inlet channel of the blower mechanism are respectively connected to independent variable frequency fans. The variable frequency fans are linked with the material thickness detection module in the screening box and dynamically adjust the wind speed according to the real-time material thickness. The wind speed difference between the two channels is 0.5-2m / s.

[0010] As a preferred embodiment of this utility model, the jet head of the pulse cleaning mechanism is provided with a self-cleaning filter assembly, the filter assembly includes an inclined filter screen that forms a non-perpendicular angle with the airflow jet direction, and a one-way valve is provided at the outlet end of the jet head; the pulse controller is linked with the vibrator signal, and the blowing frequency is adjusted synchronously with the vibration frequency.

[0011] As a preferred embodiment of this utility model, the acute angle between the excitation force direction of the vibrator and the screen plane is in the range of 30°-60°, and the vibrator is fixed to the side wall of the screening box by a rotatable mounting bracket, the rotation angle of the mounting bracket being adjusted by an electric push rod.

[0012] As a preferred technical solution of this utility model, a buffer slide is provided below the qualified product outlet of the screening box. The inclination angle of the buffer slide is adjustable, and the surface is covered with flexible shock-absorbing material.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The vibrator's excitation force is at an acute angle of 30°-60° to the screen plane, causing the material to undergo a spiral throwing motion. Combined with dual-channel differential airflow (wind speed difference 0.5-2m / s), it achieves stratified sorting by allowing light impurities to float and heavy salt particles to sink, with a sorting accuracy of 98.7% for qualified products. The PTFE coating on the screen surface works synergistically with pulsed reverse jetting to reduce the screen hole clogging rate to below 5%, making it particularly suitable for viscous materials with a moisture content of 15%-45%.

[0015] 2. The variable frequency fan is linked with the material thickness detection module, and the wind speed is dynamically adjusted according to the feed rate, avoiding material accumulation or airflow waste caused by overload in traditional equipment, reducing energy consumption by 25%-30%; the modular design of the screen assembly (replacement time ≤10 minutes) and the electric adjustment of the screen tilt angle can adapt to the sorting needs of different sizes of vegetables such as radishes and cauliflower, increasing the equipment utilization rate to over 90%.

[0016] 3. The flexible support components and buffer slide design reduce the vegetable breakage rate to within 1.5%; the self-cleaning filter assembly of the jet head and the detachable dust filter extend the life of core components by 2-3 times, and extend the maintenance cycle from 8 hours to 24 hours. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 This is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 5 This is a schematic diagram of the airflow guide plate in this utility model;

[0023] In the diagram: 1. Vibrating table; 2. Screening box; 3. Blower mechanism; 4. Pulse cleaning mechanism; 11. Shock-absorbing spring; 12. Adjusting bolt; 21. Feed inlet; 22. Large material outlet; 23. Qualified product outlet; 24. Heavy impurity outlet; 25. Air inlet; 26. Lightweight impurity outlet; 27. Screen assembly; 28. Vibrator; 29. ​​Airflow guide plate; 31. First air inlet channel; 32. Second air inlet channel; 33. Variable frequency fan; 34. Dust filter; 41. Jet nozzle; 42. High-pressure air source; 43. Pulse controller; 44. One-way valve; 51. Anti-backflow baffle; 241. Guide plate; 271. First screen; 272. Second screen; 291. Guide hole. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] In the attached diagram, all identical reference numerals refer to the same components.

[0026] like Figure 1-5 As shown, this utility model provides a sorting device for pickled vegetables based on the synergy of vibration and wind power. The structure, connection relationship and function of each component are as follows:

[0027] The vibrating table 1 serves as the basic support structure for the equipment. Multiple sets of damping springs 11 are symmetrically installed at the bottom of the table surface. The stiffness of the damping springs 11 is continuously adjusted via adjusting bolts 12 that penetrate the table surface. Mounting holes are located at the four corners of the vibrating table 1, and the screening box 2 is fixed to the top of the vibrating table 1 with bolts. The adjusting bolts 12 feature a trapezoidal thread design, changing the spring preload when rotated to adapt to the vibration intensity requirements of different material sorting processes.

[0028] The screening box 2 is a rectangular sealed structure with an inclined feed inlet 21 at the top. The inlet 21 has an inclination angle of 55°-65° to guide the material to fall evenly. Along the length of the bottom of the screening box 2, there are three outlets in sequence: a large material outlet 22, a qualified product outlet 23, and a heavy impurity outlet 24. The large material outlet 22 is located at the front end of the screening box 2 and has a guide chute at the outlet to discharge materials larger than the aperture of the first screen 271. The qualified product outlet 23 communicates with the space below the second screen 272, and an adjustable guide plate is installed on the outside of the outlet to collect pickled vegetables that meet the standards. The heavy impurity outlet 24 is located at the center of the bottom of the box, and an inclined guide plate 241 is installed on the inside of the outlet. The guide plate 241 has an inclination angle of 40°-50° and a polished surface to guide high-density impurities such as salt particles to slide out.

[0029] The side wall of the screening box 2 is provided with a double-layer air inlet 25, which is connected to the first air inlet channel 31 and the second air inlet channel 32 of the blower mechanism 3 respectively. A detachable dust filter 34 is installed inside the air inlet 25.

[0030] The screen assembly 27 includes a first screen 271 and a second screen 272: The first screen 271 is installed at an angle on the upper part of the screening box 2. It has a large screen aperture and its edges are fixed to the inner wall of the box by spring locks or snap-fit ​​quick-locking mechanisms. The screen surface is provided with multiple wear-resistant reinforcing ribs arranged along the material movement direction. The second screen 272 is arranged parallel to the first screen 271 below it. It has a smaller screen aperture and is kept at a distance from the first screen 271 by four sets of elastic supports. The screen surface is coated with a polytetrafluoroethylene anti-sticking layer with a thickness of 0.1-0.3mm. The elastic supports are made of rubber and spring composite and are used to buffer the impact vibration between the screens, while allowing the second screen 272 to swing slightly to enhance the material screening efficiency.

[0031] Two vibrators 28 are symmetrically installed on both sides of the screening box 2, with the excitation force direction of the vibrators 28 forming an acute angle of 30°-60° with the screen plane. The vibrators 28 are fixed by rotatable mounting brackets, and the rotation angle of the mounting brackets is adjusted by bolts. The amplitude and frequency of the vibrators 28 are independently adjusted by an external controller to adapt to the sorting requirements of materials with different moisture contents.

[0032] The blower mechanism 3 includes an independently controlled first air inlet channel 31 and a second air inlet channel 32: The first air inlet channel 31 is connected to the variable frequency blower 33, with the air outlet facing the feed end of the first screen 271, and is used to provide high-speed airflow to disperse light debris; The second air inlet channel 32 has the air outlet aligned with the end of the second screen 272, and the air outlet angle is adjusted by a slide rail structure to enhance the dispersion of qualified materials; The airflow equalization device consists of a porous metal plate and guide vanes, and is installed at the end of the air inlet channel to ensure uniform airflow distribution.

[0033] The pulse cleaning mechanism 4 includes multiple sets of jet heads 41, a high-pressure air source 42, and a pulse controller 43: Jet heads 41 are staggered along the length of the screen, with the jet direction at an angle of 45°-60° to the screen plane. The jet head 41 is equipped with an inclined filter and a one-way valve 44 to prevent impurities from flowing back; the high-pressure air source 42 is connected to the jet head 41 through a hose and provides a pulse airflow of 0.3-0.5MPa. The pulse frequency is adjusted synchronously with the vibration frequency of the vibrator 28; the pulse controller 43 controls the jet head 41 to intermittently spray according to the screen blockage detection signal to remove the blockage in the screen holes.

[0034] The flow guiding device 5 is connected to the outside of the lightweight debris discharge port 26 of the screening box 2, and includes a flow guiding channel and an anti-backflow baffle 51: Flow guiding channel: The surface of the channel is covered with a polyurethane wear-resistant layer and the tilt angle is adjustable. It is used to collect lightweight debris and guide it into the collection bin; Anti-backflow baffle 51: It adopts a hinged structure and has a counterweight at the bottom of the baffle. It automatically closes by gravity to prevent debris backflow caused by airflow disturbance.

[0035] The method of using this utility model is as follows:

[0036] 1. Parameter preset: Adjust the stiffness of the damping spring 11 by adjusting bolt 12 to match the current material weight; set the initial frequency, amplitude and excitation force direction (30°-60° acute angle) of the vibrator 28.

[0037] 2. Feeding Operation: Pickled vegetables are evenly fed into the screening box 2 through the inclined feed inlet 21. After being initially dispersed by the guide plate 241, the material falls onto the surface of the first screen 271. The vibrator 28 drives the screen assembly 27 to generate directional vibration, causing the material to move spirally along the screen surface. Large impurities are discharged from the large material outlet 22. The blower mechanism 3 is activated. The first air inlet channel 31 provides a high-speed airflow to disperse light debris. The second air inlet channel 32 uses graded airflow to pass qualified products through the screen to the qualified product outlet 23, while heavy salt particles are discharged from the heavy impurity outlet 24. The pulse cleaning mechanism 4 works automatically. The jet nozzle 41 sprays air onto the back of the screen at a preset frequency to remove blockages. Based on feedback from the material thickness detection module, the wind speed difference of the variable frequency fan 33 (0.5-2 m / s) and the amplitude of the vibrator 28 are dynamically adjusted to avoid material accumulation or airflow overload.

[0038] 3. Shutdown sequence: After stopping the feeding, keep the equipment running idle for 1-2 minutes until the residual material on the screen is discharged, then turn off the vibrator 28 and the blower mechanism 3.

[0039] Furthermore, the screen specifications can be changed: for different types of vegetables (such as mustard greens and cowpeas), the aperture combination of the first screen 271 and the second screen 272 can be quickly changed.

[0040] Furthermore, vibration angle optimization: the angle of the mounting bracket of the vibrator 28 is adjusted by electric push rod to change the direction of the excitation force and improve sorting efficiency.

[0041] Furthermore, under high humidity conditions, the wind speed difference of the blower mechanism 3 is increased to enhance the separation effect of light impurities.

[0042] This invention relates to a sorting device for pickled vegetables based on the synergy of vibration and airflow. Through the directional excitation force of the vibrator 28, the graded airflow control of the blower mechanism 3, and the modular design of the screen assembly 27, it achieves efficient sorting and anti-clogging cleaning of pickled vegetables. The components are compact in structure and reliably connected, adaptable to continuous sorting operations of materials of different specifications.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A pickled vegetable sorting device based on vibration and wind force cooperation, characterized in that, include: A vibrating table (1) has a vibration damping assembly on its table surface. The vibration damping assembly includes symmetrically arranged damping springs (11), and the spring stiffness is continuously adjustable by adjusting bolts (12). A screening box (2) is fixed on the vibrating table (1). The top is provided with an inclined feed inlet (21), and the bottom side is provided with a large material outlet (22), a qualified product outlet (23), and a heavy impurity outlet (24) in sequence along the material movement direction. The heavy impurity outlet (24) is located at the center of the bottom of the screening box and is provided with an inclined guide plate (241). A screen assembly (27) includes a first screen (271) installed at an inclination and a second screen (272) arranged parallel below it. The aperture of the first screen (271) is larger than that of the second screen (272). The two screens are kept apart by an elastic support member, and the screen surface is coated with a polytetrafluoroethylene anti-sticking layer. The actuator (28) is symmetrically fixed on both sides of the screening box (2), and its excitation force direction is at an acute angle to the screen plane, and the vibration frequency and amplitude are adjustable; the blower mechanism (3) includes an independently controlled first air inlet channel (31) and a second air inlet channel (32), which are respectively connected to the double-layer air inlet (25) on the side wall of the screening box (2), and the two channels are equipped with an airflow equalization device and a detachable dust filter (34); the pulse cleaning mechanism (4) includes jet heads (41) distributed alternately along the length of the screen, a high-pressure air source (42) connected to the jet head (41), and a pulse controller (43) that controls the intermittent spraying of the jet head (41), and the spraying direction of the jet head (41) is at a preset angle to the screen plane; the guide device is connected to the outside of the lightweight impurity discharge port (26) of the screening box (2), and its outlet end is equipped with an anti-backflow baffle (51).

2. The pickled vegetable sorting device based on vibration and wind force cooperation according to claim 1, characterized in that, The first screen (271) and the second screen (272) are detachable modular structures. Their edges are fixed by spring locks or snap-fit ​​quick locking mechanisms, and the screen surface is provided with wear-resistant reinforcing ribs arranged along the material movement direction. The screen assembly (27) supports the replacement of screens with different aperture specifications.

3. The pickled vegetable sorting device based on vibration and wind force cooperation according to claim 1, characterized in that, The screening box (2) is provided with an airflow guide plate (29) located between the air inlet (25) and the screen. The airflow guide plate (29) achieves continuous adjustment of the opening ratio and tilt angle through a hinge shaft or slide rail structure, and the guide plate is provided with staggered guide holes (291).

4. The pickled vegetable sorting device based on vibration and wind force cooperation according to claim 1, characterized in that, The first air inlet channel (31) and the second air inlet channel (32) of the blower mechanism (3) are respectively connected to an independent variable frequency fan (33). The variable frequency fan (33) is linked with the material thickness detection module in the screening box (2) to dynamically adjust the wind speed according to the real-time material thickness, and the wind speed difference between the two channels is 0.5-2m / s.

5. The pickled vegetable sorting device based on vibration and wind force cooperation according to claim 1, characterized in that, The pulse cleaning mechanism (4) has a self-cleaning filter assembly inside the jet head (41). The filter assembly includes an inclined filter screen that is not perpendicular to the direction of airflow jetting, and a one-way valve (44) is provided at the outlet end of the jet head (41). The pulse controller (43) is linked with the vibrator (28) by signal, and the jetting frequency is adjusted synchronously with the vibration frequency.

6. The pickled vegetable sorting device based on vibration and wind force cooperation according to claim 1, characterized in that, The direction of the exciting force of the vibrator (28) is at an acute angle of 30°-60° with the screen plane, and the vibrator (28) is fixed to the side wall of the screening box (2) through a rotatable mounting support, the rotating angle of the mounting support being adjusted through an electric push rod.

7. The pickled vegetable sorting device based on vibration and wind force cooperation according to claim 1, characterized in that, A buffer slide is arranged below the qualified product outlet (23) of the screening box (2), the buffer slide being adjustable in the inclination angle and being covered with a flexible damping material on the surface.

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