An automatic screening and separation device for medium and large plant leaves

Abstract

This invention relates to the field of screening devices, and particularly to an automatic screening and separation device for medium and large plant leaves. The device includes an upper shell, a lower shell, and a screening mechanism disposed within the upper and lower shells. The upper shell has a feed inlet, and the lower shell has a discharge outlet. The screening mechanism includes a rotating shaft, a support frame mounted on the rotating shaft, and multiple screening hoppers mounted on the support frame. The support frame is equipped with an energy-storing vibrating element. This element stores energy as the support frame rotates from a low point to a high point, moving towards the rotating shaft. When the support frame reaches its highest point, the stored energy is released and strikes the screening hoppers. This invention, by incorporating an energy-storing vibrating element, stores energy during the movement of the screening hoppers from a low point to a high point. When the screening hoppers reach their highest point, the energy is released, and the energy-storing vibrating element strikes the screen, generating vibration and thus improving the screening effect.

Description

Technical Field

[0001] This invention relates to the field of screening device technology, and in particular to an automatic screening and separation device for medium and large plant leaves. Background Technology

[0002] In tobacco leaf sorting, medium and large leaves are often mixed in, which can cover some tobacco stems, plastic pieces, metal pieces and other foreign objects below. This will affect the AI ​​recognition and sorting in the subsequent process. Therefore, an automatic sorting device for medium and large plant leaves is needed to separate medium and large plant leaves from tobacco stems, plastic pieces, metal pieces and other foreign objects. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic screening and separation device for medium and large plant leaves. By setting an energy storage vibrating component, energy can be stored during the process of the screen bucket moving from a low point to a high point. When the screen bucket moves to the high point, the energy is released, and the energy storage vibrating component hits the screen to generate vibration, thereby improving the screening effect.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] An automatic screening and separation device for medium and large plant leaves includes an upper shell, a lower shell, and a screening mechanism disposed inside the upper and lower shells; the upper shell is provided with a feed inlet, and the lower shell is provided with a discharge outlet;

[0006] The screening mechanism includes a rotating shaft, a support frame mounted on the rotating shaft, and multiple screening hoppers mounted on the support frame. The rotating shaft drives the support frame to rotate. The screening hoppers are used to screen medium and large plant leaves and foreign objects when the support frame rotates from a low point to a high point. When the support frame rotates from a high point to a low point, the medium and large plant leaves in the screening hoppers automatically fall to the discharge port.

[0007] The support frame is equipped with an energy storage vibrating element. The energy storage vibrating element is used to store energy when the support frame rotates from a low point to a high point and moves towards the direction of the rotating axis. When the support frame rotates to the high point, the stored energy is released and strikes the screen bucket.

[0008] Furthermore, the support frame includes multiple radial struts and multiple circumferential struts, which together form a regular polygonal wheel structure.

[0009] Furthermore, the sieve bucket includes two side plates, an inclined plate, a baffle, and a screen. The screen is connected to the circumferential support rod. The two side plates are arranged on both sides of the screen. The side plates are right-angled trapezoidal structures. The inclined plate is connected to the inclined sides of the two side plates. The baffle is connected between the short right-angled sides of the two side plates and the inclined plate. The screen, the two side plates, and the baffle form a rectangular groove for feeding.

[0010] The aperture of the screen is smaller than the size of the middle blade but larger than the size of the foreign object.

[0011] Furthermore, the rotating shaft is provided with a connecting disk coaxial with it, and one end of the radial support rod is fixedly connected to the connecting disk.

[0012] Furthermore, one end of the radial strut is welded and fixed to the connecting disc.

[0013] Furthermore, the energy storage vibration component includes a slider, an energy storage spring, and a limiting component. The slider is slidably sleeved on the radial support rod. The limiting component is used to limit the slider when the radial support rod rotates from the low point to the high point, thereby driving the slider to move in the direction of the rotation axis and squeeze the energy storage spring. When the radial support rod rotates to the high point, the limiting component releases the limiting component from the slider, and the slider impacts the screen under the action of the energy storage spring.

[0014] Furthermore, the limiting member is a magnetic arc-shaped track, and the slider is made of magnetic material.

[0015] The beneficial effects of this invention are:

[0016] This invention uses an energy-storing vibrating element to store energy as the sieve bucket moves from a low point to a high point. When the sieve bucket reaches the high point, the energy is released, and the energy-storing vibrating element strikes the screen to generate vibration, thereby improving the screening effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional automatic screening and separation device for medium and large plant leaves in an embodiment of the present invention. Figure 1 ;

[0018] Figure 2 A three-dimensional view of the automatic screening and separation device for middle and large plant leaves, concealed behind the upper shell;

[0019] Figure 3 A top view of an automatic screening and separation device for medium and large plant leaves;

[0020] Figure 4 for Figure 3 Sectional view along line AA;

[0021] Figure 5 for Figure 3 Sectional view along the BB direction;

[0022] Figure 6 Three-dimensional automatic screening and separation device for medium and large plant leaves Figure 2 ;

[0023] In the diagram, 1. Upper shell; 2. Lower shell; 3. Feed inlet; 4. Discharge outlet; 5. Rotating shaft; 6. Screen hopper; 7. Support frame; 8. Radial strut; 9. Circumferential strut; 10. Side plate; 11. Inclined plate; 12. Baffle; 13. Screen; 14. Connecting disc; 15. Sliding block; 16. Energy storage spring; 17. Limiting component. Detailed Implementation

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] See Figures 1-6 The present invention provides a technical solution:

[0026] Example:

[0027] like Figures 1-6 As shown, an automatic screening and separation device for medium and large plant leaves includes an upper shell 1, a lower shell 2, and a screening mechanism disposed inside the upper shell 1 and the lower shell 2; the upper shell 1 is provided with a feed inlet 3, and the lower shell 2 is provided with a discharge outlet 4;

[0028] like Figure 2 and Figure 4 As shown, the screening mechanism includes a rotating shaft 5, a support frame 7 mounted on the rotating shaft 5, and multiple screen hoppers 6 mounted on the support frame 7. The rotating shaft 5 drives the support frame 7 to rotate. The screen hoppers 6 are used to screen medium-sized and large plant leaves and foreign objects when the support frame 7 rotates from a low point to a high point. When the support frame 7 rotates from a high point to a low point, the medium-sized and large plant leaves in the screen hoppers automatically fall to the discharge port 4.

[0029] The support frame 7 is equipped with an energy storage vibrating element, which stores energy as the support frame 7 rotates from a low point to a high point and moves towards the rotating shaft 5. When the support frame 7 rotates to the high point, the stored energy is released and strikes the screen bucket 6. The rotating shaft 5 is driven by a motor.

[0030] The support frame 7 includes multiple radial struts 8 and multiple circumferential struts 9, which together form a regular polygonal wheel structure.

[0031] like Figure 2As shown, the sieve hopper 6 includes two side plates 10, inclined plates 11, baffles 12, and a screen 13. The screen 13 is connected to the circumferential support rod 9. The two side plates 10 are arranged on both sides of the screen. The side plates 10 have a right-angled trapezoidal structure. The inclined plates 11 are connected to the inclined sides of the two side plates 10. The baffles 12 are connected between the short right-angled sides of the two side plates 10 and the inclined plates 11. A rectangular slot for feeding is formed between the screen 13, the two side plates 10, and the baffles 12.

[0032] The aperture of the screen 13 is smaller than the size of the middle blade but larger than the size of the foreign object.

[0033] The rotating shaft 5 is provided with a connecting disk 14 coaxial with it, and one end of the radial support rod 8 is fixedly connected to the connecting disk 14.

[0034] One end of the radial strut 8 is welded and fixed to the connecting disc 14.

[0035] like Figures 4-6 As shown, the energy storage vibration component includes a slider 15, an energy storage spring 16, and a limiting member 17. The slider is slidably sleeved on the radial support rod 8. The limiting member 17 is used to limit the slider 15 when the radial support rod 8 rotates from the low point to the high point, thereby driving the slider 15 to move in the direction of the rotating shaft 5 and squeeze the energy storage spring 16. When the radial support rod 8 rotates to the high point, the limiting member 17 releases the limiting of the slider 15, and the slider 15 impacts the screen 13 under the action of the energy storage spring 16.

[0036] The limiting member 17 is a magnetic arc-shaped track (in this embodiment, the arc-shaped track can be, but is not limited to, made of magnets). The arc-shaped track is set from the outer end at the low point to the inner end at the high point. The slider 15 is made of magnetic material (in this embodiment, the slider 15 can be, but is not limited to, made of iron material, while the support frame 7, the screen 13, and other components are made of non-magnetic material, such as aluminum alloy).

[0037] 1. In addition to the combination of a magnetic arc-shaped track and a magnetic slider 15 as in this embodiment, the limiting component 17 can also be a structure where the arc-shaped track is replaced by an arc-shaped groove, with the groove being shallow at both ends and deep in the middle. A roller adapted to the arc-shaped groove is provided on the slider 15. The roller (which can also be a caster wheel or a ball joint) slides into the arc-shaped groove from the right end. Under the limiting action of the groove wall, the slider 15 moves along the direction of the arc-shaped groove. When the radial support rod 8 moves, this manifests as the slider 15 moving radially towards the rotating shaft 5. 2. In this embodiment, the feed inlet 3 is located at the top of the upper shell 1 or on the other side opposite to the discharge outlet 4. The medium-sized pieces, large pieces of plant leaves, and foreign objects (hereinafter referred to as the objects to be screened) to be screened enter the sieve 6 through the feed inlet 3. 3. In this embodiment, the support frame 7 is a regular dodecagonal wheel structure. Eleven sieve hoppers are provided, with one hopper left empty to allow foreign objects to fall to the bottom of the lower shell 2. The bottom of the lower housing 2 can be configured with a through-hole structure, and a waste bin can be placed below it. Screened foreign objects fall through the bottom of the lower housing 2 into the waste bin for collection and secondary screening or centralized treatment. 4. In this embodiment, the plant leaves are tobacco leaves. 5. To ensure the limiting effect of the arc-shaped track on the slider 15, the slider 15 is in contact with or close to the arc-shaped track.

[0038] Working principle: The material to be screened enters the upper shell 1 through the feed inlet 3 and falls into the screen hopper 6 on the right side of the diagram. As the support frame 7 rotates, the screen hopper 6 moves from the lower right end to the upper top end (i.e., the support frame 7 rotates from the lower point to the higher point). During this process, the material to be screened is close to the screen mesh 13. With the movement of the screen hopper 6, impurities in the material to be screened fall through the screen holes and finally fall to the bottom of the lower shell 2 or are discharged from the bottom of the lower shell 2.

[0039] Medium and large plant leaves with a diameter larger than the sieve holes remain in the sieve hopper 6. When the sieve hopper 6 moves from a high point to a low point, the medium and large plant leaves fly out in an arc under the action of gravity and centrifugal force and fall out from the discharge port 4, thus achieving the separation of foreign objects from medium and large plant leaves.

[0040] During the rotation of the support frame 7 from its low point to its high point, the slider 15, under the magnetic force of the arc-shaped track, not only rotates synchronously with the radial support rod 8, but also has a radial linear motion toward the rotating shaft 5. When the slider 15 moves toward the rotating shaft 5, it compresses the spring until it reaches the end of the arc-shaped track (left end in the figure). When the slider 15 is misaligned with the arc-shaped track, the magnetic attraction of the arc-shaped track on the slider 15 disappears, and the slider 15 moves toward the screen 13 under the action of the energy storage spring 16, thus repeatedly impacting the screen 13. The vibration generated by the impact further separates foreign objects and medium and large plant leaves in the sieve hopper 6.

[0041] This invention uses an energy-storing vibrating element to store energy as the sieve bucket moves from a low point to a high point. When the sieve bucket reaches the high point, the energy is released, and the energy-storing vibrating element strikes the screen to generate vibration, thereby improving the screening effect.

[0042] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An automatic screening and separation device for medium and large plant leaves, characterized in that: It includes an upper shell, a lower shell, and a screening mechanism disposed inside the upper and lower shells; the upper shell is provided with a feed inlet, and the lower shell is provided with a discharge outlet; The screening mechanism includes a rotating shaft, a support frame mounted on the rotating shaft, and multiple screening hoppers mounted on the support frame. The rotating shaft drives the support frame to rotate. The screening hoppers are used to screen medium and large plant leaves and foreign objects when the support frame rotates from a low point to a high point. When the support frame rotates from a high point to a low point, the medium and large plant leaves in the screening hoppers automatically fall to the discharge port. The support frame is equipped with an energy storage vibrating element. The energy storage vibrating element is used to store energy when the support frame rotates from a low point to a high point and moves towards the direction of the rotating axis. When the support frame rotates to the high point, the stored energy is released and strikes the screen bucket. The support frame includes multiple radial struts and multiple circumferential struts, which together form a regular polygonal wheel structure. The sieve bucket includes two side plates, an inclined plate, a baffle, and a screen. The screen is connected to the circumferential support rod. The two side plates are arranged on both sides of the screen. The side plates are right-angled trapezoidal structures. The inclined plate is connected to the inclined side of the two side plates. The baffle is connected between the short right-angled side of the two side plates and the inclined plate. The screen, the two side plates, and the baffle form a rectangular slot for feeding. The aperture of the screen is smaller than the size of the middle blade and larger than the size of the foreign object; The energy storage vibration component includes a slider, an energy storage spring, and a limiting component. The slider is slidably sleeved on the radial support rod. The limiting component is used to limit the slider when the radial support rod rotates from the low point to the high point, thereby driving the slider to move in the direction of the rotation axis and squeeze the energy storage spring. When the radial support rod rotates to the high point, the limiting component releases the limiting component on the slider, and the slider impacts the screen under the action of the energy storage spring. The limiting component is a magnetic arc-shaped track, and the slider is made of magnetic material.

2. The automatic screening and separation device for medium and large plant leaves according to claim 1, characterized in that: The rotating shaft is provided with a connecting disc coaxial with it, and one end of the radial support rod is fixedly connected to the connecting disc.

3. The automatic screening and separation device for medium and large plant leaves according to claim 2, characterized in that: One end of the radial strut is welded and fixed to the connecting disc.

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