Automatic screening and separating device for medium and large plant leaves

Abstract

The invention relates to the technical field of screening devices, in particular to an automatic medium and large plant leaf screening and separating device which comprises an upper shell, a lower shell and a screening mechanism arranged in the upper shell and the lower shell. The upper shell is provided with a feeding port, and the lower shell is provided with a discharging port. The screening mechanism comprises a rotating shaft, a supporting frame arranged on the rotating shaft and a plurality of screening hoppers arranged on the supporting frame. An energy storage vibration part is arranged on the supporting frame and used for enabling the supporting frame to move towards the rotating shaft to store energy when the supporting frame rotates from a low point to a high point, and when the supporting frame rotates to the high point, the stored energy is released and the screen bucket is knocked. By arranging the energy storage vibration piece, energy can be stored in the process that the screen hopper moves from a low point to a high point, when the screen hopper moves to the high point, the capacity is released, the energy storage vibration piece impacts the screen to generate vibration, and then the screening effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, in particular to an automatic screening and separation device for medium-sized and large plant leaves. Background Art

[0002] During tobacco leaf sorting, medium and large leaves are often mixed in, which will cover some tobacco stems, plastic sheets, metal sheets and other foreign objects underneath. 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 sheets, metal sheets and other foreign objects. Summary of the Invention

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

[0004] The object of the present invention is achieved through the following technical solutions: An automatic screening and separation device for medium and large plant leaves, comprising an upper shell, a lower shell, and a screening mechanism disposed inside the upper shell and the lower shell; 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 arranged on the rotating shaft, and a plurality of screening buckets arranged on the support frame. The rotating shaft drives the support frame to rotate. The screening buckets are used to screen medium-sized and large plant leaves and foreign matter 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-sized and large plant leaves in the drying buckets automatically fall to the discharge port. The support frame is provided with an energy storage vibrator, which is used to store energy when the support frame rotates from a low point to a high point and moves toward the rotation axis. When the support frame rotates to the high point, the stored energy is released and strikes the screen bucket.

[0005] Furthermore, the support frame includes a plurality of radial struts and a plurality of circumferential struts, and the plurality of radial struts and the circumferential struts form a regular polygonal wheel structure.

[0006] Furthermore, the screen 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 a right-angled trapezoidal structure, the inclined plates are 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 plates, and a rectangular notch for feeding is formed between the screen, the two side plates and the baffle; The aperture of the screen is smaller than the size of the middle blade and larger than the size of the foreign matter.

[0007] Furthermore, a connecting disc coaxial with the rotating shaft is provided on the rotating shaft, and one end of the radial support rod is fixedly connected to the connecting disc.

[0008] Furthermore, one end of the radial support rod is welded and fixed to the connecting disc.

[0009] Furthermore, the energy storage vibrator includes a slider, an energy storage spring and a limiter. The slider is slidably mounted on the radial support rod. The limiter is used to limit the slider when the radial support rod rotates from a low point to a high point, thereby driving the slider to move toward the rotating axis and squeeze the energy storage spring. When the radial support rod rotates to the high point, the limiter cancels the limit on the slider, and the slider hits the screen under the action of the energy storage spring.

[0010] Furthermore, the limiting member is a magnetic arc track, and the slider is made of magnetic material.

[0011] The beneficial effects of the present invention are: The present invention provides an energy storage vibrator, which can store energy when the screen bucket moves 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 vibrator hits the screen to generate vibration, thereby improving the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The three-dimensional diagram of the automatic screening and separation device for medium and large plant leaves in the embodiment of the present invention Figure 1 ; Figure 2 A three-dimensional diagram of the automatic screening and separation device for medium and large plant leaves hidden behind the upper shell; Figure 3 This is a top view of the automatic screening and separation device for medium and large plant leaves; Figure 4 for Figure 3 Middle AA section view; Figure 5 for Figure 3 Middle BB section view; Figure 6 A three-dimensional automatic screening and separation device for medium and large plant leaves Figure 2 ; In the figure, 1. upper shell; 2. lower shell; 3. feed port; 4. discharge port; 5. rotating shaft; 6. screen bucket; 7. support frame; 8. radial support rod; 9. circumferential support rod; 10. side plate; 11. inclined plate; 12. baffle; 13. screen; 14. connecting disc; 15. slider; 16. energy storage spring; 17. limiter. DETAILED DESCRIPTION

[0013] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0014] See Figures 1-6 , the present invention provides a technical solution: Example: 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 arranged inside the upper shell 1 and the lower shell 2; the upper shell 1 is provided with a feed port 3, and the lower shell 2 is provided with a discharge port 4; like Figure 2 and Figure 4 As shown, the screening mechanism includes a rotating shaft 5, a support frame 7 provided on the rotating shaft 5, and a plurality of screening buckets 6 provided on the support frame 7. The rotating shaft 5 drives the support frame 7 to rotate. The screening buckets 6 are used to screen medium-sized and large plant leaves and foreign matter 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 drying buckets automatically fall to the discharge port 4. The support frame 7 is provided with an energy storage vibrator, which is used to store energy when the support frame 7 rotates from a low point to a high point and moves toward 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.

[0015] The support frame 7 includes a plurality of radial struts 8 and a plurality of circumferential struts 9 , and the plurality of radial struts 8 and the circumferential struts 9 form a regular polygonal wheel structure.

[0016] like Figure 2 As shown, the screen bucket 6 includes two side plates 10, an inclined plate 11, a baffle 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 are a right-angled trapezoidal structure, the inclined plates 11 are connected to the oblique sides of the two side plates 10, the baffle 12 is connected between the short right-angled sides of the two side plates 10 and the inclined plates 11, and a rectangular notch for feeding is formed between the screen 13, the two side plates 10 and the baffle 12; The aperture of the screen 13 is smaller than the size of the middle blade and larger than the size of the foreign matter.

[0017] The rotating shaft 5 is provided with a connecting disc 14 coaxial therewith, and one end of the radial support rod 8 is fixedly connected to the connecting disc 14 .

[0018] One end of the radial support rod 8 is welded and fixed to the connecting disc 14 .

[0019] like Figure 4-Figure 6 As shown, the energy storage vibrator includes a slider 15, an energy storage spring 16 and a limiter 17. The slider is slidably mounted on the radial strut 8. The limiter 17 is used to limit the slider 15 when the radial strut 8 rotates from a low point to a high point, thereby driving the slider 15 to move toward the rotating shaft 5 and squeezing the energy storage spring 16. When the radial strut 8 rotates to the high point, the limiter 17 cancels the limit on the slider 15, and the slider 15 hits the screen 13 under the action of the energy storage spring 16.

[0020] The limiting member 17 is a magnetic arc track (in this embodiment, the arc track can be but is not limited to being made of a magnet), and the arc track is arranged from the outer end at the low point toward the inner end at the high point. The slider 15 is made of a magnetic material (in this embodiment, the slider 15 can be but is not limited to being made of iron material, and the support frame 7, the screen 13 and other components are made of non-magnetic materials, such as aluminum alloy).

[0021] 1. In addition to the combination of the magnetic curved track and magnetic slider 15 in this embodiment, the limiting member 17 can also be a curved chute structure, where the curved track is replaced with a shallower curved chute at the ends and deeper in the middle. A roller adapted to the curved chute is provided on the slider 15. The roller (which can also be a universal wheel or a universal ball) slides into the curved chute from the right end. The limiting action of the curved chute wall causes the slider 15 to move along the curved chute. Movement of the radial strut 8 manifests as radial movement of the slider 15 toward the rotating shaft 5. 2. In this embodiment, the feed inlet 3 is located at the top of the upper housing 1 or on the side opposite the discharge port 4. Medium-sized and large plant leaves and foreign matter to be screened (hereinafter referred to as "screened matter") enter the screening hopper 6 through the feed inlet 3. 3. In this embodiment, the support frame 7 is a regular dodecagonal wheel structure. Eleven screening hoppers 6 are provided, with one left empty to facilitate the removal of foreign matter and allow it to fall to the bottom of the lower housing 2. The bottom of the lower housing 2 can be configured as a through-hole structure, with a waste bin positioned below it. Screened foreign matter falls through the bottom of the lower housing 2 into the waste bin for collection and secondary screening or centralized processing. 4. In this embodiment, the plant leaves are tobacco leaves. 5. To ensure that the curved track limits the slider 15, the slider 15 is in contact with or close to the curved track.

[0022] Working Principle: The material to be screened enters the upper housing 1 through the feed port 3 and falls into the screen bucket 6 on the right side of the diagram. As the screen bucket 6 rotates with the support frame 7, it moves from the lower right end toward the upper end (i.e., the support frame 7 rotates from the lowest point to the highest point). During this process, the material to be screened approaches the screen 13. As the screen bucket 6 moves, impurities in the material to be screened fall through the sieve holes and finally fall to the bottom of the lower housing 2 or are discharged from the bottom of the lower housing 2.

[0023] The medium and large plant leaves with a diameter larger than the sieve holes remain in the sieve bucket 6. When the sieve bucket 6 moves from a high point to a low point, the medium and large plant leaves fly out in an arc shape under the action of gravity and centrifugal force, and fall out from the discharge port 4, thereby realizing the separation of foreign matter from the medium and large plant leaves.

[0024] As support frame 7 rotates from its lowest point to its highest point, slider 15, under the magnetic force of the curved track, not only rotates synchronously with radial struts 8 but also undergoes radial linear motion toward shaft 5. As slider 15 moves toward shaft 5, it compresses the spring until it reaches the end of the curved track (left end in the figure). When slider 15 becomes misaligned with the curved track, the curved track's magnetic attraction to slider 15 disappears. Slider 15, under the action of energy-storing spring 16, moves toward screen 13, repeatedly striking screen 13. The vibrations generated by these impacts further separate foreign matter from medium and large plant leaves in sieve 6.

[0025] The present invention provides an energy storage vibrator, which can store energy when the screen bucket moves 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 vibrator hits the screen to generate vibration, thereby improving the screening effect.

[0026] The foregoing description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the appended claims.

Claims

1. An automatic screening and separation device for medium and large plant leaves, characterized by: It includes an upper shell, a lower shell and a screening mechanism arranged inside the upper shell and the lower shell; the upper shell is provided with a feed port, and the lower shell is provided with a discharge port; The screening mechanism includes a rotating shaft, a support frame arranged on the rotating shaft, and a plurality of screening buckets arranged on the support frame. The rotating shaft drives the support frame to rotate. The screening buckets are used to screen medium-sized and large plant leaves and foreign matter 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-sized and large plant leaves in the drying buckets automatically fall to the discharge port. The support frame is provided with an energy storage vibrator, which is used to store energy when the support frame rotates from a low point to a high point and moves toward the rotation axis. When the support frame rotates to the high point, the stored energy is released and strikes the screen bucket.

2. The automatic screening and separation device for medium and large plant leaves according to claim 1, characterized in that: The support frame includes a plurality of radial struts and a plurality of circumferential struts, and the plurality of radial struts and the circumferential struts form a regular polygonal wheel structure.

3. The automatic screening and separation device for medium and large plant leaves according to claim 2, characterized in that: The screen 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 a right-angled trapezoidal structure, the inclined plates are 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 plates, and a rectangular notch for feeding is formed between the screen, the two side plates and the baffle; The aperture of the screen is smaller than the size of the middle blade and larger than the size of the foreign matter.

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

5. The automatic screening and separation device for medium and large plant leaves according to claim 4, characterized in that: One end of the radial support rod is welded and fixed to the connecting disc.

6. The automatic screening and separation device for medium and large plant leaves according to claim 2, characterized in that: The energy storage vibrating member includes a slider, an energy storage spring and a limit member. The slider is slidably mounted on the radial support rod. The limit member is used to limit the slider when the radial support rod rotates from a low point to a high point, thereby driving the slider to move toward the rotating shaft and squeeze the energy storage spring. When the radial support rod rotates to the high point, the limit member cancels the limit on the slider, and the slider hits the screen under the action of the energy storage spring.

7. The automatic screening and separation device for medium and large plant leaves according to claim 6, characterized in that: The limiting member is a magnetic arc track, and the sliding block is made of magnetic material.

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