A fine crushing and grading system for motor materials based on the principle of vibration screening

Abstract

The present invention relates to the technical field of screening equipment, and discloses a motor material fine crushing and grading system based on the principle of vibration screening, comprising a casing, a support plate fixedly connected to the circumferential inner wall of the casing, a sieve plate fixedly mounted on the upper surface of the support plate, a driving base arranged at the bottom end of the casing, a rotating shaft connected to the internal transmission of the driving base arranged at the axis of the casing, and the rotating shaft sequentially penetrates the support plate and the sieve plate from bottom to top. The motor material fine crushing and grading system based on the principle of vibration screening can effectively solve the problem in the prior art that when the crushed motor material is vibrated and screened, since the crushed motor material may contain some irregularly shaped fragments, powders or fine particles, these materials are easily entangled, accumulated or adhered to the screen during the screening process, resulting in clogging of the screen, and the material needs to be evenly spread manually, resulting in low work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, and in particular to a motor material fine crushing and grading system based on the vibration screening principle. Background Art

[0002] Screening equipment is a mechanical device used to separate solid materials of different particle sizes according to particle size. It is widely used in many industries such as mining, metallurgy, building materials, chemicals, and food. By using the vibration generated by a vibration motor or exciter, the material is made to move periodically on the screen surface. Materials smaller than the size of the screen hole fall through the screen hole, while materials larger than the size of the screen hole remain on the screen surface, thereby achieving material screening.

[0003] In the prior art, when the crushed motor material is subjected to vibration screening, since the crushed motor material may contain some irregularly shaped fragments, powder or fine particles, these materials are easily entangled, accumulated or adhered to the screen during the screening process, causing the screen to be blocked. It is necessary to manually spread the material evenly, and the work efficiency is low. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a motor material fine crushing and grading system based on the vibration screening principle, which can effectively solve the problem in the prior art that when the crushed motor materials are subjected to vibration screening, there may be some irregularly shaped fragments, powders or fine particles in the crushed motor materials. These materials are easy to entangle, accumulate or adhere to the screen during the screening process, causing the screen to be blocked, and the materials need to be spread evenly manually, resulting in low work efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a motor material fine crushing and grading system based on the vibration screening principle, comprising:

[0008] A casing, wherein a support plate is fixedly connected to the circumferential inner wall of the casing, a sieve plate is fixedly installed on the upper surface of the support plate, a driving base is arranged at the bottom end of the casing, a rotating shaft drivingly connected to the output end of the driving base is arranged at the axis center of the casing, and the rotating shaft sequentially penetrates the support plate and the sieve plate from bottom to top and extends to the outside, a lower sieve hole is opened inside the support plate, and an upper sieve hole connected to the inside of the lower sieve hole is opened inside the sieve plate;

[0009] A cleaning part, the cleaning part comprising a connecting rod, the outer end of the connecting rod is fixedly connected to the circumferential outer surface of the rotating shaft, and the outer surface of the connecting rod is fixedly connected to a scraper;

[0010] Among them, the rotating shaft is rotatably connected to the conical cylinder through a fixed rod arranged on its circumferential outer surface, the end of the fixed rod away from the rotating shaft is slidably connected to the circumferential inner surface of the casing, and the circumferential conical surface of the conical cylinder is provided with several groups of sliding grooves, and a lifting mechanism that can be used to clean the lower sieve hole is arranged inside the sliding groove.

[0011] Furthermore, the jacking mechanism includes a jacking column, the outer surface of which slides in contact with the inner wall of the slide groove, the interior of the conical cylinder is provided with a receiving groove which is connected to the interior of the slide groove, the interior of the receiving groove is provided with a connecting plate fixedly connected to the outer end of the jacking column, the connecting plates are provided in multiple groups and distributed in a circular array with a fixed rod as the axis, and one end of the conical cylinder is provided with an adjusting part which can be used to adjust the telescopic extension of the jacking column.

[0012] Furthermore, a feed opening is fixedly connected to the circumferential outer surface of the casing, and the bottom of the lower sieve hole is designed in a trumpet shape.

[0013] Furthermore, the adjusting member comprises a connecting block, an outer surface of the connecting block is fixedly connected to one side of the connecting plate, and a guide block is fixedly connected to the circumferential outer surface of the fixing rod.

[0014] Furthermore, one end of the lifting column away from the fixing rod adopts a concave design, the lower surface of the connecting rod is fixedly connected to the limiting column, and the lower surface of the limiting column adopts a convex design.

[0015] Furthermore, a circular cutter is fixedly connected to one end of the jacking column away from the fixing rod, and a cutting groove is provided on the lower surface of the connecting rod.

[0016] Furthermore, a dividing knife is fixedly connected to the lower surface of the limiting column, and four dividing knives are provided and distributed in a circular array with the limiting column as the center.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention is provided with a screen plate, a rotating shaft and a scraper. The scraper rotates on the surface of the screen plate through the rotating shaft. The scraper is made of a flexible material and can better contact the upper surface of the screen plate during the vibration process, thereby reducing the wear on the screen plate. The scraper can continuously move on the upper surface of the screen plate during the vibration screening process, timely scrape off the material blocked on the upper screen hole, keep the screen plate and the support plate unobstructed, and evenly distribute the motor material fragments on the upper surface of the screen plate to improve the screening efficiency. The scraper can rotate while continuously loading materials, without stopping the machine for manual removal, thereby ensuring the continuity of the screening process. At the same time, the limit column arranged below the support plate can utilize the rotation of the conical cylinder to push the limit column upward when it is at the top, clean up the stuck material, and restore the unobstructed upper and lower screen holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the cross section of the casing, the conical cylinder and the sieve plate of the embodiment of the present invention;

[0022] Figure 3 This is a schematic structural diagram of a conical cylinder, an adjusting member and a sieve plate according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic structural diagram of a cleaning portion and a conical cylinder according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic structural diagram of a limit column, a sieve plate, a support plate and a lifting mechanism according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic structural diagram of a conical cylinder, a connecting rod and a scraper according to an embodiment of the present invention;

[0026] Figure 7 For the embodiment of the present invention Figure 6 A schematic diagram of the structure with a partial enlargement at the center;

[0027] Figure 8 It is a schematic structural diagram of the lifting mechanism, the limiting column and the dividing knife according to an embodiment of the present invention.

[0028] The numbers in the figure represent respectively: 1, casing; 11, support plate; 111, lower sieve hole; 12, sieve plate; 121, upper sieve hole; 13, rotating shaft; 14, driving base; 15, discharge port; 2, cleaning part; 21, connecting rod; 211, limiting column; 2111, dividing knife; 22, scraper; 23, fixing rod; 24, conical cylinder; 241, slide groove; 242, receiving groove; 25, lifting mechanism; 251, lifting column; 2511, circular cutting knife; 2512, cutting groove; 252, connecting plate; 26, adjusting member; 261, connecting block; 262, guide block. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The present invention will be further described below in conjunction with the embodiments.

[0031] Example:

[0032] See also Figure 1-Figure 8 The present invention provides a technical solution: a motor material fine crushing and grading system based on the vibration screening principle, comprising:

[0033] A casing 1, a support plate 11 is fixedly connected to the circumferential inner wall of the casing 1, a sieve plate 12 is fixedly installed on the upper surface of the support plate 11, a driving base 14 is arranged at the bottom end of the casing 1, a rotating shaft 13 drivingly connected to the output end of the driving base 14 is arranged at the axis of the casing 1, and the rotating shaft 13 sequentially penetrates the support plate 11 and the sieve plate 12 from bottom to top and extends to the outside, the upper surface of the support plate 11 is fitted with the lower surface of the sieve plate 12, a lower sieve hole 111 is provided inside the support plate 11, and an upper sieve hole 121 connected to the inside of the lower sieve hole 111 is provided inside the sieve plate 12, the upper sieve hole 121 and the lower sieve hole 111 are of the same size and are in the same position, and the upper sieve hole 121 and the lower sieve hole 111 correspond one to one;

[0034] The cleaning part 2 includes a connecting rod 21, the outer end of the connecting rod 21 is fixedly connected to the circumferential outer surface of the rotating shaft 13, and the outer surface of the connecting rod 21 is fixedly connected to a scraper 22. The scraper 22 is made of a flexible material and can always fit with the sieve plate 12 during the vibration process without causing wear to the sieve plate 12;

[0035] Among them, the rotating shaft 13 is rotatably connected to the conical cylinder 24 through a fixed rod 23 arranged on its circumferential outer surface, and the end of the fixed rod 23 away from the rotating shaft 13 is slidably connected to the circumferential inner surface of the casing 1. A plurality of groups of slide grooves 241 are opened on the circumferential conical surface of the conical cylinder 24, and a lifting mechanism 25 that can be used to clean the lower sieve hole 111 is arranged inside the slide groove 241.

[0036] The lifting mechanism 25 includes a lifting column 251, the outer surface of which fits and slides with the inner wall of the slide groove 241. The interior of the conical cylinder 24 is provided with a receiving groove 242 which is connected to the interior of the slide groove 241. The interior of the receiving groove 242 is provided with a connecting plate 252 fixedly connected to the outer end of the lifting column 251. Both ends of the connecting plate 252 extend to the outside of the conical cylinder 24. There are multiple groups of connecting plates 252 and they are distributed in a circular array with the fixed rod 23 as the axis. One end of the conical cylinder 24 is provided with an adjusting member 26 which can be used to adjust the extension and retraction of the lifting column 251.

[0037] A feed opening 15 is fixedly connected to the circumferential outer surface of the casing 1 , and the bottom of the lower sieve hole 111 is designed in a trumpet shape.

[0038] The adjusting member 26 includes a connecting block 261, the outer surface of which is fixedly connected to one side of the connecting plate 252, and the circumferential outer surface of the fixing rod 23 is fixedly connected to a guide block 262. The guide block 262 is designed in a special shape, with one side being a bevel and the other side being a vertical straight edge design, which can complete the guiding function of the connecting block 261.

[0039] The end of the lifting column 251 away from the fixing rod 23 adopts a concave design, the lower surface of the connecting rod 21 is fixedly connected to the limiting column 211, and the lower surface of the limiting column 211 adopts a convex design. The concave surface at the fixing rod 23 and the convex surface at the limiting column 211 have the same curvature.

[0040] A circular cutter 2511 is fixedly connected to one end of the lifting column 251 away from the fixing rod 23. A cutting groove 2512 is provided on the lower surface of the connecting rod 21. A circle of cutting edges is provided at the bottom end of the circle of the cutting groove 2512, which can cooperate with the circular cutter 2511 to cut the external thin copper wire.

[0041] The lower surface of the limiting column 211 is fixedly connected with a dividing knife 2111. There are four dividing knives 2111 and they are distributed in a circular array with the limiting column 211 as the center. The top of the rotating shaft 13 adopts a raised arc surface design, which can prevent the electrode material transported from the outside from accumulating at the top of the rotating shaft 13.

[0042] The process of screening the motor material after crushing:

[0043] In actual application, the crushed motor material is conveyed to the upper surface of the sieve plate 12 in the housing 1 by an external conveying device, and the driving base 14 is started, and the housing 1 and the sieve plate 12 and the support plate 11 in the internal structure thereof are vibrated synchronously. Due to the vibration of the sieve plate 12, the crushed motor material will be continuously thrown up and dropped on the sieve plate 12, forming a continuous throwing motion. In this process, the material will gradually be layered, and the smaller particles will gradually sink to the bottom of the support plate 11 and the sieve plate 12, while the larger particles will remain on the upper layer of the sieve plate 12. When the material is thrown up, the motor material smaller than the size of the upper sieve hole 121 will pass through the upper sieve hole 121 under the action of gravity and vibration, and fall into the lower material discharge port 15, thereby realizing the screening and separation of the material, while the material larger than the size of the upper sieve hole 121 will vibrate and deviate on the surface of the sieve plate 12 until it moves to the upper material discharge port 15. The top of the rotating shaft 13 adopts a convex surface design, which can prevent the crushed electrode material from accumulating on the top.

[0044] While the equipment is vibrating and screening the motor material after crushing, the rotating shaft 13 connected to the internal transmission of the driving base 14 rotates synchronously, the top of the rotating shaft 13 extends to the upper surface of the screen plate 12, the connecting rod 21 is fixedly connected to the circumferential outer surface of the rotating shaft 13, and the outer surface of the connecting rod 21 is fixedly connected to a scraper 22, the scraper 22 is made of flexible material, and is inclined at an angle to the screen plate 12, and its lower surface is in contact with the upper surface of the screen plate 12, and the scraper 22 follows the connecting rod 21 to perform synchronous rotation. Since there may be some irregularly shaped fragments, powders or fine particles in the motor material after crushing, these materials are easy to entangle, accumulate or adhere to the screen plate 12 during the screening process, among which, sticky insulating material fragments or metal particles attached with oil and dirt, etc., are easy to cause the screen to be blocked, and the scraper 22 that is constantly rotating on the upper surface of the screen plate 12 can timely scrape off the motor material blocked in the upper screen hole 121 to keep the screen plate 12 unobstructed. The scraping action of the scraper 22 can effectively prevent material accumulation, ensure the continuous screening process, and evenly distribute the motor material fragments on the upper surface of the screen plate 12 to improve the screening efficiency. At the same time, the scraper 22 is designed with a flexible material to avoid deformation caused by collision with the screen plate 12 during vibration.

[0045] The sieve plate 12 is relatively thin, and the support plate 11 is fixed to the circumferential inner wall of the casing 1. The upper surface of the support plate 11 is fitted and fixed to the lower surface of the sieve plate 12. The lower sieve holes 111 and the upper sieve holes 121 are the same size and are connected internally to ensure that the material can pass smoothly without getting stuck. A fixed rod 23 is fixedly connected to the circumferential outer surface of the rotating shaft 13, and the end of the fixed rod 23 away from the rotating shaft 13 is slidably connected to the circumferential inner surface of the casing 1. The fixed rod 23 is in an inclined state, and the side close to the rotating shaft 13 is higher. The fixed rod 23 is below the support plate 11 and rotates inside the casing 1 following the rotating shaft 13. At the same time, a conical cylinder 24 is sleeved on the circumferential outer surface of the fixed rod 23, and the interior of the conical cylinder 24 is rotatably connected to the fixed rod 23 through a transmission device. The conical cylinder 24 is smaller on the side close to the rotating shaft 13, so that its top is parallel to the support plate 11, and the conical cylinder 24 slides and rotates inside the casing 1, so that its top is always parallel to the support plate 11.

[0046] Process of removing the thin copper wire stuck in the lower sieve hole 111:

[0047] When the motor material is crushed, the winding of the motor is usually made of conductive materials such as copper. Thinner copper wires are usually easier to bend and entangle. High-purity thin copper wires are relatively soft and more likely to deform under certain external forces, but they are not necessarily easy to break. Because its internal structure is relatively uniform and there are not too many impurities interfering, it usually does not break directly into pieces when subjected to external forces. Therefore, when vibrating and screening motor materials, the thin copper wires are easily stuck between the lower sieve hole 111 and the upper sieve hole 121, and it is easy for half of the thin copper wires to fall at the bottom of the support plate 11 and the other half to get stuck on the surface of the sieve plate 12.

[0048] The connecting rod 21 and the fixing rod 23 are arranged on the same side of the rotating shaft 13. When the connecting rod 21 and the fixing rod 23 rotate with the rotating shaft 13, the connecting rod 21 and the fixing rod 23 are still in a relatively static state. The outer surface of the circumference of the conical cylinder 24 is provided with a plurality of groups of slide grooves 241. The slide grooves 241 correspond to the upper sieve holes 121 on the surface of the sieve plate 12 one by one, and the distance between the two groups of slide grooves 241 is equal to the distance between the two groups of upper sieve holes 121. The conical cylinder 24 rotates around the fixed rod 23. In the initial state, the lifting column 251 is slidably connected to the inside of the slide groove 241. The same group of lifting columns 251 are fixedly connected to one end close to the fixed rod 23 with a connecting plate 252. The connecting plate 252 can link all the lifting columns 251 in the same group by sliding in the accommodating groove 242. When the connecting plate 252 of this group is rotated to the top and is level with the support plate 11, both ends of the connecting plate 252 extend to the outer end of the conical cylinder 24 and are fixedly connected with a connecting block 261. When the conical cylinder 24 rotates as a whole and the lifting mechanism 25 of this group moves to the highest point, the outer surface of the connecting block 261 at the outer end of the connecting plate 252 of this group adopts a curved surface design, and the outer surface of the connecting block 261 will contact the hypotenuse of the guide block 262.

[0049] The connecting rod 21 rotates along with the rotating shaft 13, and the scraper 22 is fixedly connected to the outer surface of the connecting rod 21. During the rotation process, the scraper 22 first contacts one of the upper sieve holes 121, and then the connecting rod 21 reaches the upper sieve hole 121. When the scraper 22 contacts the upper surface of the sieve plate 12, the motor material can be scraped off. The motor material larger than the upper sieve hole 121 moves under the action of the scraper 22 until it moves to the discharge port 15 for discharge. The motor material smaller than the upper sieve hole 121 passes through the upper sieve hole 121 under the action of vibration and falls into the bottom of the inner wall of the casing 1. After being scraped off by the scraper 22, there are still thin copper wires stuck inside the upper sieve hole 121. When the jacking mechanism 25 is used to jack up the stuck thin copper wire, the bottom end of the limit column 211 is parallel to the sieve plate 12 and there is a small distance from the sieve plate 12.

[0050] Since the guide block 262 is fixedly connected to the fixed rod 23, and the connecting block 261 rotates synchronously with the cone cylinder 24, the connecting block 261 follows the rotation of the cone cylinder 24, and after contacting the hypotenuse of the guide block 262, the connecting plate 252 slides inside the receiving groove 242 to the side away from the fixed rod 23, driving all the jacking columns 251 in the same group to move to the side close to the connecting rod 21. The radius of the jacking column 251 is smaller than the radius of the lower sieve hole 111, and the sieve plate 12 is thin, and the support plate 11 is used for support and fixation. At this time, the top of the jacking column 251 has protruded from the circumferential outer surface of the cone cylinder 24, and extends a short distance to the lower sieve hole 111 inside the support plate 11. Since the bottom of the lower sieve hole 111 adopts a bell-mouth design, the radius is large, which is conducive to the jacking column 251 to smoothly enter the lower sieve hole 111 and play a guiding role. At the same time, the thin copper wire stuck inside the lower sieve hole 111 will move along with the upward movement of the lifting column 251 until the stuck thin copper wire is between the concave surface of the lifting column 251 and the convex surface of the limiting column 211. As the cone cylinder 24 continues to rotate, under the action of the guide block 262 and the bell mouth at the bottom of the lower sieve hole 111, the connecting block 261 is at the topmost platform of the guide block 262, and the connecting plate 252 is at the top of the inner wall of the receiving groove 242, driving all the lifting columns 251 in the same group to lift upward, so that the concave surface at the top of the lifting column 251 fits with the convex surface at the bottom of the limiting column 211. Since the conical cylinder 24 rotates quickly, the lifting of the lifting column 251 can be completed quickly with a certain impact force. At the moment when the concave surface at the top of the lifting column 251 fits with the bottom of the limiting column 211, the circular cutter 2511 fixedly connected to the top of the lifting column 251 instantly enters into the cutting groove 2512 for engagement, and the blade of the circular cutter 2511 cooperates with the outer blade of the cutting groove 2512, and the dividing knife 2111 located at the bottom of the limiting column 211 cooperates with the concave surface at the top of the lifting column 251, so as to cut and separate the thin copper wire into small pieces.

[0051] The thin copper wire is divided into multiple parts, and after being cut by the circular cutter 2511 and the cutting groove 2512, it will fall on the upper surface of the screen plate 12, and then continue to flow from the upper screen hole 121 to the lower surface of the support plate 11 under the action of vibration to complete the screening. After the instantaneous cutting is completed, the cone cylinder 24 continues to rotate, and the connecting blocks 261 at both ends of the connecting plate 252 rotate around the fixed rod 23 following the cone cylinder 24. After a slight rotation, the connecting block 261 reaches the upper side of the vertical edge of the guide block 262, and the connecting block 261 instantly breaks away from the limiting effect of the guide block 262 on it, and instantly recovers downward under the action of its own gravity and vibration. The lifting column 251 of this group is completely hidden inside the slide groove 241, and the thin copper wire located between the limit column 211 and the lifting column 251 is divided into four areas by the cutting circular cutter 2511 and the dividing knife 2111, all of which are smaller than the diameter of the upper sieve hole 121. When the lifting column 251 is hidden in the conical cylinder 24, the thin copper wire cut into pieces is in the concave surface of the lifting column 251, and this group of lifting mechanisms 25 will continue to rotate. When the concave surface of the lifting column 251 rotates downward, the lifting column 251 and the connecting plate 252 slide downward as a whole under the action of their own gravity, and the lifting column 251 is exposed on the outer surface of the conical cylinder 24. The thin copper wire inside the concave surface of the lifting column 251 also slides to the bottom of the casing 1, and the discharge is completed at the discharge port 15 in the next screening level.

[0052] In summary, the process of cleaning the upper sieve hole 121 has the following advantages:

[0053] Advantage 1: The rotating shaft 13 will drive the scraper 22 to move synchronously on the upper surface of the screen plate 12 during the rotation process, and can run while loading, ensuring the continuous screening process, effectively preventing the accumulation of motor materials, and evenly distributing the motor material fragments on the upper surface of the screen plate 12, thereby improving the screening efficiency. At the same time, the scraper 22 is made of flexible material, and its lower surface fits the upper surface of the screen plate 12, which can avoid deformation caused by collision with the screen plate 12 during vibration.

[0054] Advantage 2: The sieve plate 12 is thin, and the support plate 11 fixed on the inner wall of the casing 1 can support the sieve plate 12. At the same time, the upper surface of the support plate 11 fits the lower surface of the sieve plate 12, and the size and position of the upper sieve hole 121 and the lower sieve hole 111 completely coincide, which can ensure that the material can pass smoothly without getting stuck. At the same time, the bottom of the lower sieve hole 111 adopts a trumpet-shaped design, which can guide the lifting column 251.

[0055] Advantage three: the scraper 22 is fixedly connected to the connecting rod 21, and the limiting column 211 is at the bottom end of the connecting rod 21. The scraper 22 can scrape off other motor materials except the stuck thin copper wire in advance to avoid other electrode materials from damaging it during the cooperation between the jacking column 251 and the limiting column 211. At the same time, the cooperation between the jacking column 251 and the limiting column 211 is located at the lower end of the connecting rod 21. In the process of removing the thin copper wire, the material can be continuously loaded without stopping the machine for manual removal, thereby ensuring the continuity of the screening process.

[0056] Advantage 4: The conical cylinder 24 rotates as a whole around the fixed rod 23, and the fixed rod 23 is fixedly connected to the rotating shaft 13, and rotates around the rotating shaft 13 inside the casing 1, ensuring that the multiple groups of slide grooves 241 inside the conical cylinder 24 can correspond one-to-one with the upper sieve holes 121 on the surface of the sieve plate 12 during movement. During the rotation of the conical cylinder 24, the adjusting member 26 can adjust the lifting mechanism 25 so that when the lifting columns 251 in the same group reach the top, they slide upward from the inside of the slide groove 241 at the same time until the lifting columns 251 pass through the slide groove 241, the lower sieve hole 111, and the upper sieve hole 121 from bottom to top, respectively, so that the thin copper wire stuck between the lower sieve hole 111 and the upper sieve hole 121 and unable to be scraped off by the scraper 22 can be lifted to the upper surface of the sieve plate 12.

[0057] Advantage 5. Since the thin copper wire is large in volume, it is still easy to get stuck in the upper sieve hole 121 after being cleaned to the upper surface of the sieve plate 12. Therefore, when the lifting column 251 moves upward, the concave part of the lifting column 251 contacts the concave part of the limiting column 211, squeezing the thin copper wire and compressing the volume of the entangled thin copper wire. When the lifting column 251 moves to the top, the circular cutting knife 2511 set on the top of the lifting column 251 cooperates with the cutting edge of the circumference of the cutting groove 2512 to complete the cutting, and the dividing knife 2111 set on the convex surface of the limiting column 211 cooperates with the concave surface of the lifting column 251 to complete the cutting. At this time, the thin copper wire is divided into multiple parts, which avoids the situation where the subsequent thin copper wire continues to be stuck during the vibration screening process.

[0058] Advantage 6. The cut copper wire is mainly divided into two parts. The first part is the copper wire outside the limit column 211. After being cut by the circular cutter 2511 and the cutting groove 2512, it will fall on the upper surface of the sieve plate 12. Then, under the action of the vibration of the driving base 14, it will continue to be screened according to its particle size. The particles smaller than the upper sieve hole 121 will flow into the next screening level, and the particles larger than the upper sieve hole 121 will be transported to the upper discharge port 15 following the vibration deviation. The second part is the thin copper wire located between the limit column 211 and the lifting column 251. The thin copper wire in this area is divided into four parts by the dividing knife 2111, which are all smaller than the diameter of the upper sieve hole 121. The thin copper wire in this area is in the concave surface of the lifting column 251. When the lifting column 251 is restored downward, it continues to rotate with the conical cylinder 24. When the concave surface of the lifting column 251 faces downward, under the action of gravity, the thin copper wire of the required size falls into the housing 1 to complete the screening. The circular cutting knife 2511, the cutting groove 2512 and the dividing knife 2111 can accurately cut the thin copper wire stuck in the lower sieve hole 111 into small pieces, solving the problem that the thin copper wire is easily entangled and blocks the lower sieve hole 111.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motor material fine crushing and grading system based on the principle of vibration screening, characterized in that: include: A casing (1), wherein a support plate (11) is fixedly connected to the circumferential inner wall of the casing (1), a sieve plate (12) is fixedly connected to the upper surface of the support plate (11), a driving base (14) is arranged at the bottom end of the casing (1), a rotating shaft (13) drivingly connected to the output end of the driving base (14) is arranged at the axis of the casing (1), and the rotating shaft (13) sequentially penetrates the support plate (11) and the sieve plate (12) from bottom to top and extends to the outside, a lower sieve hole (111) is provided inside the support plate (11), and an upper sieve hole (121) connected to the inside of the lower sieve hole (111) is provided inside the sieve plate (12); A cleaning portion (2), the cleaning portion (2) comprising a connecting rod (21), the outer end of the connecting rod (21) being fixedly connected to the circumferential outer surface of the rotating shaft (13), and the outer surface of the connecting rod (21) being fixedly connected to a scraper (22) that is in contact with the upper surface of the sieve plate (12); The rotating shaft (13) is rotatably connected to a conical cylinder (24) via a fixing rod (23) disposed on its circumferential outer surface; one end of the fixing rod (23) away from the rotating shaft (13) is slidably connected to the circumferential inner surface of the housing (1); a plurality of groups of slide grooves (241) are formed on the circumferential conical surface of the conical cylinder (24); and a lifting mechanism (25) for cleaning the lower sieve hole (111) is disposed inside the slide groove (241); The lifting mechanism (25) comprises a lifting column (251), the outer surface of the lifting column (251) is slidably fitted with the inner wall of the slide groove (241), the interior of the conical cylinder (24) is provided with a receiving groove (242) which is connected with the interior of the slide groove (241), the interior of the receiving groove (242) is provided with a connecting plate (252) fixedly connected to the outer end of the lifting column (251), the connecting plates (252) are provided in a plurality of groups and are distributed in a circular array with the fixing rod (23) as the axis, and the conical cylinder ( An adjusting member (26) for adjusting the extension and retraction of the jacking column (251) is provided at one end of the jacking column (251) away from the fixing rod (23), the end of the jacking column (251) away from the fixing rod (23) adopts a concave design, the lower surface of the connecting rod (21) is fixedly connected to the limiting column (211), the lower surface of the limiting column (211) adopts a convex design, the end of the jacking column (251) away from the fixing rod (23) is fixedly connected to a circular cutter (2511), and the lower surface of the connecting rod (21) is provided with a cutting groove (2512).

2. According to claim 1, a motor material fine crushing and grading system based on the vibration screening principle is characterized by: A material discharge port (15) is fixedly connected to the circumferential outer surface of the casing (1), and the bottom of the lower sieve hole (111) is designed in a trumpet shape.

3. The motor material fine crushing and grading system based on the vibration screening principle according to claim 1 is characterized by: The adjusting member (26) comprises a connecting block (261), the outer surface of the connecting block (261) being fixedly connected to one side of the connecting plate (252), and the circumferential outer surface of the fixing rod (23) being fixedly connected to a guide block (262).

4. The motor material fine crushing and grading system based on the vibration screening principle according to claim 1 is characterized by: A dividing knife (2111) is fixedly connected to the lower surface of the limiting column (211), and four dividing knives (2111) are provided and distributed in a circular array with the limiting column (211) as the center.

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