Dielectric sorting device

Abstract

The utility model relates to the technical field of sorting, and discloses a dielectric sorting device which comprises a first belt roller and a second belt roller, a conveying belt is wound on the first belt roller and the second belt roller, a plurality of electrodes are arranged in the conveying belt at equal intervals, the two ends of each electrode are provided with power connection ends, and the power connection ends extend to the surface of the conveying belt. The electrodes are longitudinally distributed in parallel and perpendicular to the conveying belt in the transverse direction, power connection strips are arranged on the outer surfaces of the two ends of the conveying belt at the position of the first belt roller, the power connection strips abut against the power connection ends and are in contact with the power connection ends, the power connection strips are connected with wiring ends extending outwards, and a plurality of partition plates are arranged between the positions, corresponding to the ends of the power connection strips, below the conveying belt and the positions below the brush rollers. According to the sorting device, by means of the long conveying distance of the conveying belt and the arrangement of the power connection strips, materials can enter polarization on the upper surface of the conveying belt, meanwhile, certain polarization time is still maintained on the lower surface of the conveying belt, sufficient polarization of the materials is ensured, and the sorting effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sorting, in particular to a dielectric sorting device. Background Art

[0002] The basic principle of dielectric sorting is based on the difference in dielectric constants of different materials in an electric field. When materials are in a non-uniform electric field, they will produce different movement behaviors due to polarization. Dielectric sorting has a wide range of applications in many fields, Mineral sorting: In the mineral processing process, dielectric sorting can be used to separate minerals with different dielectric properties. Agricultural sorting: In the agricultural field, dielectric sorting can be used for seed sorting. Seeds of different varieties or qualities may have different dielectric properties in an electric field, so dielectric sorting technology can be used to grade and screen them. Biomedicine: In the biomedical field, dielectric sorting technology is also used to sort cells, bacteria and other microorganisms.

[0003] At present, when dielectric sorting of seeds is carried out in agriculture, most of them have a sorting cylinder structure, that is, the seeds need to fall on the sorting cylinder, which is driven by the sorting cylinder to rotate a certain distance. At the same time, the sorting cylinder is used as a single electrode or combined with additional electrodes to form a double electrode. Since the sorting cylinder is a circular surface, the seeds are in contact with it for a limited time. Some seeds are prone to being unpolarized or insufficiently polarized and fall directly to the full partition, resulting in a decrease in the seed sorting effect in the full partition. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a dielectric separation device to solve the problems in the background technology.

[0006] (2) Technical solution

[0007] In order to solve the above problems, the present invention provides the following technical solutions:

[0008] A dielectric sorting device includes a belt roller 1 and a belt roller 2, a conveyor belt is wound around the belt roller 1 and the belt roller 2, and a plurality of electrodes with equal spacing are built into the conveyor belt. Power terminals are installed at both ends of the electrodes, and the power terminals extend to the surface of the conveyor belt. The electrodes are arranged in a longitudinal distribution parallel to and perpendicular to the horizontal direction of the conveyor belt. The outer surfaces of both ends of the conveyor belt at the position of the belt roller are provided with power strips, which are in contact with the power terminals, and are connected to the power strips with extended connection terminals. A plurality of partitions are provided between the end positions of the corresponding power strips and the bottom of the brush roller below the conveyor belt.

[0009] Preferably, the conveyor belt is composed of a multi-layer structure, including an upper surface adhesive layer, an upper fiber mesh layer, an electrode, a lower fiber mesh layer and a lower surface adhesive layer. The upper fiber mesh layer and the lower fiber mesh layer are glued to each other, and multiple electrodes are arranged at equal intervals between the upper fiber mesh layer and the lower fiber mesh layer. The upper surface adhesive layer is glued and hot-pressed to the top surface of the upper fiber mesh layer away from the electrode, and the lower surface adhesive layer is glued and hot-pressed to the bottom surface of the lower fiber mesh layer away from the electrode. The two ends of the electrode are welded with power terminals, and the power terminals pass through the upper fiber mesh layer and the upper surface adhesive layer at the corresponding position to extend to the surface of the conveyor belt.

[0010] Preferably, side frames are provided at both ends of the belt roller one and the belt roller two, and a through opening is preset on the side frame near the top. Both ends of the conveyor belt are located in the through opening, and a sealing strip is installed on the peripheral wall of the through opening. The sealing strip is in sliding contact with the surface of the conveyor belt for sealing. A front baffle is installed on the side frame in front of the belt roller one, and a rear baffle is installed on the side frame below the brush roller. Both ends of the partition are fixed to the side frame at corresponding positions, and a drop opening one, a drop opening two and a drop opening three are formed between the front baffle, the side frame, the partition and the rear baffle.

[0011] Preferably, roller shafts are installed at both ends of the belt roller 1 and the belt roller 2, and a motor 1 is installed below the roller shaft. The shaft of the motor 1 and the roller shaft are connected through a belt 1 transmission.

[0012] Preferably, a brush roller is provided on the rear side of the belt roller 2, the bristles of the brush roller touch the surface of the conveyor belt, a motor 2 is installed below one end of the brush roller, and the shaft of the motor 2 is connected to the brush roller at the corresponding position through a belt 2 transmission.

[0013] Preferably, shaft seats are installed on the side frame plate at positions corresponding to both ends of the roller shaft and both ends of the brush roller, and both ends of the roller shaft and the brush roller are sleeved on the shaft seats at corresponding positions to form a sleeved fixation, the side frame plate is located on the inner side of the power connection end on the conveyor belt, and insulating fasteners are installed on the side frame plate at positions corresponding to power strips, the power strips are fixed to the insulating fasteners, and an arc-shaped baffle is installed on the top surface of the rear baffle at a position corresponding to the outer periphery of the brush roller.

[0014] Preferably, a material guide plate is provided above the conveyor belt at the second belt roller position, the front end of the material guide plate is arranged obliquely downward toward the conveyor belt, and both sides of the material guide plate are fixed with bolts to the side frame plates at corresponding positions.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a dielectric separation device with the following beneficial effects:

[0017] 1. This sorting device, by utilizing the long conveying distance of the conveyor belt and the setting of the power strip, can allow the material to enter polarization on the upper surface of the conveyor belt, while maintaining a certain polarization time on the lower surface of the conveyor belt, ensuring sufficient polarization of the material to ensure the sorting effect.

[0018] 2. The sorting device can place electrodes inside the conveyor belt to bring it closer to the material, thereby reducing the waste of useless electric fields. At the same time, the limited positions of the power strips are in sliding contact, and the non-contact positions are not energized, ensuring safety. In addition, one conveyor belt has both conveying and sorting functions.

[0019] 3. The sorting device separates the power connection terminal from the material through the combination of side frame plates and sealing strips, avoiding the impact of the material on the power connection terminal and the power connection strip, and reducing the possibility of accidental connection.

[0020] 4. The sorting device can be used as a material transfer or baffle by setting a guide plate, which facilitates the transportation of materials to the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the appearance diagram of the utility model;

[0022] Figure 2 It is a cross-sectional view of the utility model;

[0023] Figure 3 This is a schematic diagram of the installation of the power strip in the utility model;

[0024] Figure 4 It is a three-dimensional diagram of the side frame plate of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the conveyor belt in the utility model.

[0026] In the figure: 1. Belt roller one; 2. Belt roller two; 3. Conveyor belt; 4. Roller; 5. Belt one; 6. Motor one; 7. Upper rubber layer; 8. Upper fiber mesh layer; 9. Electrode; 10. Power connection terminal; 11. Lower fiber mesh layer; 12. Lower rubber layer; 13. Power connection strip; 14. Wiring terminal; 15. Partition; 16. Brush roller; 17. Belt two; 18. Motor two; 19. Side frame; 20. Through port; 21. Sealing strip; 22. Insulating fastener; 23. Axle seat; 24. Front baffle; 25. Rear baffle; 26. Arc baffle; 27. Drop port one; 28. Drop port two; 29. Drop port three; 30. Material guide plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] See also Figure 1-5, a dielectric sorting device, including a belt roller 1 and a belt roller 2, a conveyor belt 3 is wound on the belt roller 1 and the belt roller 2, the conveyor belt 3 is composed of a multi-layer structure, including an upper surface adhesive layer 7, an upper fiber mesh layer 8, an electrode 9, a lower fiber mesh layer 11 and a lower surface adhesive layer 12, the upper fiber mesh layer 8 and the lower fiber mesh layer 11 are glued together, a plurality of electrodes 9 are provided, and the plurality of electrodes 9 are equally spaced between the upper fiber mesh layer 8 and the lower fiber mesh layer 11, and the electrodes 9 are longitudinally distributed and parallel to the horizontal direction of the conveyor belt 3. The upper surface adhesive layer 7 is glued and hot-pressed to the top surface of the upper fiber mesh layer 8 away from the electrode 9, and the lower surface adhesive layer 12 is glued and hot-pressed to the bottom surface of the lower fiber mesh layer 11 away from the electrode 9. Both ends of the electrode 9 are welded with power terminals 10, and the power terminals 10 pass through the upper fiber mesh layer 8 and the upper surface adhesive layer 7 at the corresponding position and extend to the surface of the conveyor belt 3;

[0029] Roller shafts 4 are installed at both ends of belt roller 1 and belt roller 2, and motor 16 is installed below roller shaft 4. The shaft of motor 16 and roller shaft 4 are connected by belt 15. A brush roller 16 is provided on the rear side of belt roller 2, and the bristles of brush roller 16 are against the surface of conveyor belt 3. Motor 2 18 is installed below one end of brush roller 16, and the shaft of motor 2 18 is connected to the brush roller 16 at the corresponding position by belt 2 17. The outer surfaces of both ends of conveyor belt 3 at belt roller 1 are provided with power connection bars 13, which are in contact with power connection terminals 10, and the power connection bars 13 are integrally formed with protruding connection terminals 14. A plurality of partitions 15 are provided between the end position of corresponding power connection bar 13 below conveyor belt 3 and below brush roller 16.

[0030] When in use, start motor 16 and motor 2 18, and connect the electric field generator from the terminal 14. Since the electrode 9 is connected as a whole, the electric field generator should also be a single-electrode electric field generator, such as Denba single-electrode electric field generator. The electric field generator applies high voltage to the electrode 9 to generate an asymmetric electric field distribution, forming a strong electric field force in space to affect the surrounding medium, and putting the materials to be sorted such as seeds that can be dielectrically sorted into the upper surface of the conveyor belt 3. The motor 16 drives the belt roller 1 to rotate through the belt 15 and the roller shaft 4 to transport the materials forward. When the conveyor belt 3 rotates, The power connection end 10 on its surface slides in contact with the power connection bar 13 to form conduction. When the material enters the electric field of the electrode 9, it is polarized and the material continues to be transported downward. Since the fullness of different seeds is different, their dielectric constants are also different. Therefore, they are affected differently in the electric field and are carried away by the conveyor belt 3 to different degrees, so that they fall into different partitions 15 to form separation, thereby achieving a sorting effect. Due to the long conveying distance of the conveyor belt 3 and the setting of the power connection bar 13, the material can enter polarization on the upper surface of the conveyor belt 3, and at the same time, a certain polarization time is maintained on the lower surface of the conveyor belt 3, ensuring sufficient polarization of the material to ensure the sorting effect.

[0031] In this embodiment, side frame plates 19 are provided at both ends of the belt roller 1 and the belt roller 2, and a through-opening 20 is preset on the side frame plate 19 near the top. Both ends of the conveyor belt 3 are located in the through-opening 20, and sealing strips 21 are welded and installed on the peripheral walls of the through-opening 20. The sealing strips 21 are in sliding contact and sealed against the surface of the conveyor belt 3. A front baffle 24 is welded and installed on the side frame plate 19 on the front side of the belt roller 1, and a rear baffle 25 is welded and installed on the side frame plate 19 below the brush roller 16. Both ends of the partition plate 15 are welded and fixed to the side frame plates 19 at the corresponding positions. A drop opening 1 27, a drop opening 28 and a drop opening 3 29 are formed between the front baffle 24, the side frame plate 19, the partition plate 15 and the rear baffle 25.

[0032] The side frame plate 19 is provided with shaft seats 23 bolted on both ends of the corresponding roller shaft 4 and both ends of the brush roller 16. Both ends of the roller shaft 4 and the brush roller 16 are sleeved on the shaft seats 23 at the corresponding positions to form a set and fixed. The side frame plate 19 is located on the inner side of the power connection end 10 on the conveyor belt 3. The side frame plate 19 is provided with an insulating fastener 22 screwed on the corresponding position of the power connection bar 13. The power connection bar 13 is fixed to the insulating fastener 22. The top surface of the rear baffle 25 is provided with an arc-shaped baffle 26 welded on the outer periphery of the brush roller 16.

[0033] The side frame 19, the front baffle 24 and the rear baffle 25 constitute the main support frame. During sorting, the relatively full seeds have relatively uniform internal structural components, so their dielectric constant is relatively small and they are subject to less polarization. Therefore, after falling through the conveyor belt 3, they are more likely to fall into the drop port 1 27. The shriveled seeds have a relatively large dielectric constant and are greatly affected by polarization. After falling through the conveyor belt 3, they still maintain polarization for a certain period of time and will be driven to the drop port 3 29 position to fall. At the same time, the brush roller 16 rotates to sweep the shriveled seeds still attached to the surface of the conveyor belt 3 and drop through the drop port 3 29. The seeds between full and shriveled have a shorter polarization time than full seeds but longer than shriveled seeds, so they fall from the drop port 2 28 in the middle. The side frame 19 also separates the connecting terminal 10 from the material, and is matched with the sealing strip 21 to form a contact seal against the surface of the conveyor belt 3 to ensure stable contact between the connecting bar 13 and the connecting terminal 10.

[0034] In this embodiment, a guide plate 30 is provided above the conveyor belt 3 at the position of the belt roller 2 2. The front end of the guide plate 30 is arranged obliquely downward toward the conveyor belt 3. Both sides of the guide plate 30 are bolted to the side frame plates 19 at the corresponding positions.

[0035] When inputting materials, the materials can be inputted onto the material guide plate 30 and then dropped onto the conveyor belt 3 , or the material guide plate 30 can be used to form a barrier to prevent the materials from falling backward over the conveyor belt 3 .

Claims

1. A dielectric separation device, comprising a belt roller 1 (1) and a belt roller 2 (2), wherein a conveyor belt (3) is wound around the belt roller 1 (1) and the belt roller 2 (2), and characterized in that: The conveyor belt (3) is provided with a plurality of electrodes (9) at equal intervals. Both ends of the electrodes (9) are provided with power connection ends (10). The power connection ends (10) extend to the surface of the conveyor belt (3). The electrodes (9) are arranged in a longitudinal distribution parallel to and perpendicular to the horizontal direction of the conveyor belt (3). The outer surfaces of both ends of the conveyor belt (3) at the belt roller (1) are provided with power connection strips (13). The power connection strips (13) are in contact with the power connection ends (10). The power connection strips (13) are connected to the power connection ends (10). The power connection strips (13) are connected to the outwardly extending connection terminals (14). A plurality of partitions (15) are provided between the end positions of the corresponding power connection strips (13) and the bottom of the brush roller (16) below the conveyor belt (3).

2. A dielectric separation device according to claim 1, characterized in that: The conveyor belt (3) is composed of a multi-layer structure, including an upper surface adhesive layer (7), an upper fiber mesh layer (8), an electrode (9), a lower fiber mesh layer (11) and a lower surface adhesive layer (12). The upper fiber mesh layer (8) and the lower fiber mesh layer (11) are glued to each other, and multiple electrodes (9) are arranged between the upper fiber mesh layer (8) and the lower fiber mesh layer (11) at equal intervals. The upper surface adhesive layer (7) is glued and hot-pressed to the top surface of the upper fiber mesh layer (8) away from the electrode (9), and the lower surface adhesive layer (12) is glued and hot-pressed to the bottom surface of the lower fiber mesh layer (11) away from the electrode (9). Both ends of the electrode (9) are welded with power terminals (10), and the power terminals (10) pass through the upper fiber mesh layer (8) and the upper surface adhesive layer (7) at corresponding positions and extend to the surface of the conveyor belt (3).

3. The dielectric separation device according to claim 1, characterized in that: The two ends of the belt roller 1 (1) and the belt roller 2 (2) are both provided with side frames (19), and a through-hole (20) is preset on the top of the side frame (19). Both ends of the conveyor belt (3) are located in the through-hole (20), and a sealing strip (21) is installed on the peripheral wall of the through-hole (20). The sealing strip (21) is in sliding contact with the surface of the conveyor belt (3) for sealing. A front baffle (24) is installed on the side frame (19) on the front side of the belt roller 1 (1), and a rear baffle (25) is installed on the side frame (19) below the brush roller (16). The two ends of the partition (15) are fixed to the side frame (19) at the corresponding position. A drop-out hole 1 (27), a drop-out hole 2 (28) and a drop-out hole 3 (29) are formed between the front baffle (24), the side frame (19), the partition (15) and the rear baffle (25).

4. The dielectric separation device according to claim 3, characterized in that: Both ends of the belt roller 1 (1) and the belt roller 2 (2) are equipped with roller shafts (4), a motor 1 (6) is installed below the roller shaft (4), and the shaft of the motor 1 (6) and the roller shaft (4) are connected through a belt 1 (5).

5. The dielectric separation device according to claim 3, characterized in that: A brush roller (16) is provided at the rear side of the belt roller (2), and the bristles of the brush roller (16) are against the surface of the conveyor belt (3). A motor (18) is installed below one end of the brush roller (16), and the shaft of the motor (18) is connected to the brush roller (16) at the corresponding position through a belt (17).

6. A dielectric separation device according to claim 4 or 5, characterized in that: The side frame plate (19) is provided with shaft seats (23) at positions corresponding to both ends of the roller shaft (4) and both ends of the brush roller (16). Both ends of the roller shaft (4) and the brush roller (16) are sleeved on the shaft seats (23) at corresponding positions to form a sleeve fixed arrangement. The side frame plate (19) is located at an inner position of the power connection end (10) on the conveyor belt (3). An insulating fastener (22) is provided at a position corresponding to the power connection bar (13) on the side frame plate (19). The power connection bar (13) is fixed to the insulating fastener (22). An arc-shaped baffle (26) is provided on the top surface of the rear baffle plate (25) at a position corresponding to the outer periphery of the brush roller (16).

7. The dielectric separation device according to claim 3, characterized in that: A guide plate (30) is provided above the conveyor belt (3) at the position of the belt roller 2 (2), and the front end of the guide plate (30) is arranged obliquely downwardly toward the conveyor belt (3). Both sides of the guide plate (30) are fixed with bolts to the side frame plates (19) at corresponding positions.

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