An ultrasonic vibrating screen

Abstract

The present invention relates to the technical field of waste battery material recycling, and discloses an ultrasonic vibrating screen, which comprises a chassis, at least two sieve cylinders, and a vibration mechanism; an elastic body is provided on the chassis; the sieve cylinders are arranged in sequence from bottom to top, and each sieve cylinder is provided with a sieve mesh, and one of the sieve cylinders is connected to the chassis through the elastic body; the vibration mechanism comprises a vibration frame and at least two ultrasonic transducers, the sieve cylinders are all fixed to the vibration frame, the ultrasonic transducers are fixed to the vibration frame, and the ultrasonic transducers drive the vibration frame to vibrate. By fixing all the sieve cylinders to the vibration frame, the amplitudes and frequencies of all the ultrasonic transducers that were originally asynchronous are unified to the same frequency as much as possible.

Description

Technical Field

[0001] The present invention relates to the technical field of waste battery material recycling, and particularly to an ultrasonic vibrating screen. Background Art

[0002] At present, during the recycling process of lithium batteries, after the crushed battery powder is dried and pyrolyzed, it becomes black battery powder material. After being crushed, this battery powder material becomes battery powder, which needs to be screened into particulate powder of a certain mesh number. To obtain such particulate powder, it is necessary to screen through a sieve mesh, and a vibrating screen is required during the screening process of the sieve mesh.

[0003] The multi-layer ultrasonic sieve mesh currently in use has multiple ultrasonic transducers installed on each layer of the sieve mesh. When working, these ultrasonic transducers vibrate at high speed together, driving the sieve mesh to vibrate so as to screen the battery powder and efficiently recycle the battery powder. However, during the use process, the service life of the ultrasonic sieve mesh is very short. After the sieve mesh is used for a period of time, it often breaks along a straight line, and the service life of a new sieve mesh does not exceed three months. Sometimes, the shortest service life of the sieve mesh is even less than one month. Although many modifications and reinforcements have been made to the sieve mesh in the prior art, none of them can solve the problem of sieve mesh breakage. Therefore, the sieve mesh needs to be frequently replaced during use, which not only wastes sieve mesh materials, but also makes the replacement work of the sieve mesh time-consuming and laborious. When replacing, the production line needs to be stopped, and such frequent maintenance causes a large amount of production capacity loss. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the sieve mesh is prone to break along a straight line.

[0005] To solve the above technical problem, the present invention provides an ultrasonic vibrating screen, which includes a chassis, at least two sieve cylinders, and a vibration mechanism; an elastic body is provided on the chassis; the sieve cylinders are arranged successively from bottom to top, and each sieve cylinder is provided with a sieve mesh, and one of the sieve cylinders is connected to the chassis through the elastic body; the vibration mechanism includes a vibration frame and at least two ultrasonic transducers, the sieve cylinders are all fixed to the vibration frame, the ultrasonic transducers are fixed to the vibration frame, and the ultrasonic transducers drive the vibration frame to vibrate.

[0006] Further, the vibration frame includes a bracket and at least two vibration rings, the vibration rings correspond to the sieve cylinders one by one, the vibration rings are sleeved on the outer side surface of the sieve cylinders and fixed to the sieve cylinders, and the vibration rings are fixed through the bracket.

[0007] Further, there are multiple brackets, the brackets extend from top to bottom, each bracket is fixed to at least one ultrasonic transducer, and the brackets are distributed at intervals around the outer surface of the sieve cylinder.

[0008] Furthermore, the ultrasonic transducers are distributed on the bracket at intervals around the outer surface of the screen cylinder.

[0009] Furthermore, the vibration mechanism also includes a connecting piece, and every two brackets are fixed to each other through the connecting piece.

[0010] Furthermore, it also includes at least one positioning block, which is sleeved on the connecting piece and connected to the screen drum.

[0011] Furthermore, the connecting member is an arc-shaped rod, and the positioning block can be slidably sleeved outside the connecting member.

[0012] Further, the positioning block includes a top block, a main body and a telescopic block, the connecting piece is clamped between the top block and the main body, the telescopic block is located on the side of the main body facing away from the top block, and the telescopic block abuts against the screen cylinder, the top block is provided with a threaded through hole, the main body is provided with a through hole corresponding to the threaded through hole, a clamping rod is provided in the through hole, an adjusting screw is screwed on the threaded through hole, the adjusting screw abuts against one end of the clamping rod, and the other end of the clamping rod away from the adjusting screw abuts against the telescopic block.

[0013] Furthermore, it also includes a counterweight block, which is connected to the vibration frame or the connecting member.

[0014] Furthermore, the counterweight block is in a ring shape and can be slidably mounted outside the connecting piece. A threaded hole is provided on the side of the counterweight block, and a fixing screw is screwed into the threaded hole. The fixing screw passes through the threaded hole and abuts against the connecting piece.

[0015] Compared with the prior art, the ultrasonic vibration screen in the embodiment of the present invention has the beneficial effect that: by fixing all the sieve cylinders with a vibration frame, the originally asynchronous amplitudes and frequencies of all ultrasonic transducers are unified to a unified frequency as much as possible, so that the entire sieve cylinder can maintain a uniform vibration frequency when screening battery powder, avoiding the sieve being constantly bent and broken along a specific straight line due to the fact that the vibration forces exerted on different parts of the sieve cylinder are not uniform or even opposite. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 is a top view of an embodiment of the present invention;

[0018] Figure 3 It is a cross-sectional view of the positioning block.

[0019] In the figure, 1 is the chassis; 11 is the elastic body; 2 is the sieve cylinder; 21 is the sieve mesh; 22 is the feed inlet; 23 is the discharge outlet; 24 is the upper frame; 25 is the lower frame; 3 is the vibration mechanism; 31 is the ultrasonic transducer; 32 is the vibration frame; 321 is the support; 322 is the vibration ring; 33 is the ultrasonic generator; 34 is the connecting piece; 4 is the positioning block; 41 is the top block; 411 is the threaded through hole; 42 is the body; 421 is the perforation; 43 is the telescopic block; 44 is the threaded clamping rod; 45 is the adjusting screw; 5 is the counterweight block; 51 is the threaded hole; 6 is the clamp. Specific embodiments

[0020] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. in the present invention is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0022] As Figure 1 shown, a preferred embodiment of an ultrasonic vibrating screen according to an embodiment of the present invention includes a chassis 1, at least two sieve cylinders 2, and a vibration mechanism 3. The vibration mechanism 3 drives all the sieve cylinders 2 to vibrate synchronously, and the sieve cylinders 2 vibrate ultrasonically to screen the battery powder.

[0023] As Figure 1As shown in FIG. -2, the chassis 1 can be placed on the ground or a tabletop. The chassis 1 is used to support the sieve cylinder 2. An elastic body 11, which is a spring, is provided on the chassis 1. In this embodiment, there are two sieve cylinders 2. In other embodiments, the number of sieve cylinders 2 can be adjusted according to actual needs. The sieve cylinders 2 are arranged successively from bottom to top. A sieve mesh 21 is provided on each sieve cylinder 2. The lowermost sieve cylinder 2 is connected to the chassis 1 through the elastic body 11. An inlet 22 for introducing raw materials is provided on the uppermost sieve cylinder 2. Each sieve cylinder 2 is provided with an outlet 23, and the outlet 23 is used to pour out the sieved battery powder particles. The vibration mechanism 3 includes an ultrasonic transducer 31 and a vibration frame 32. All the sieve cylinders 2 are fixed to the same vibration frame 32. The ultrasonic transducer 31 is fixed to the vibration frame 32. The ultrasonic transducer 31 drives the vibration frame 32 to vibrate. In this embodiment, the ultrasonic transducer is connected to an ultrasonic generator 33, and the ultrasonic transducer 31 vibrates by the electrical signal sent by the ultrasonic generator 33. In other embodiments, the ultrasonic transducer 31 can be directly connected to an external power supply and generate vibration independently by the ultrasonic transducer 31.

[0024] As Figure 1 As shown in FIG. -2, the working process of the present invention is as follows: When the ultrasonic generator 33 is turned on, after the ultrasonic transducer 31 receives the electrical signal, the ultrasonic transducer 31 drives the vibration frame 32 to vibrate, and the vibration frame 32 drives all the sieve cylinders 2 to vibrate together. In summary, the embodiment of the present invention provides an ultrasonic vibrating screen, which fixes all the sieve cylinders 2 by the vibration frame 32, and unifies the amplitudes and frequencies of all the original asynchronous ultrasonic transducers 31 as much as possible into a unified frequency, so that the entire sieve cylinder 2 can maintain a unified vibration frequency when screening battery powder, avoiding the sieve mesh 21 from being continuously bent under the action of different parts of the sieve cylinder 2 due to the inconsistent or even opposite vibration forces received by each part, resulting in the sieve mesh 21 being broken along a specific straight line.

[0025] As Figure 1As shown, the vibration frame 32 includes a bracket 321 and two vibration rings 322. The vibration rings 322 correspond to the sieve cylinders 2 one by one. Each sieve cylinder 2 is fixed with a vibration ring 322. The vibration ring 322 is sleeved on the outer side of the sieve cylinder 2 and fixed to the sieve cylinder 2. Each sieve cylinder 2 includes a central part, an upper frame 24 and a lower frame 25. The central part is located between the upper frame 24 and the lower frame 25. Among two adjacent sieve cylinders 2, the lower frame 25 of the sieve cylinder 2 located above is fixed to the upper frame 24 of the sieve cylinder 2 located below through a clamp 6. The vibration ring 322 is fixed to the central part. The vibration ring 322 is fixed through the bracket 321. By using the bracket 321 to fix the vibration ring 322, the vibration frame 32 is formed as a whole, improving the consistency of the amplitude and frequency of the vibration frame 32. There are multiple brackets 321. The brackets 321 extend from top to bottom. Each bracket 321 is fixed to at least one ultrasonic transducer 31. The brackets 321 are evenly spaced around the outer surface of the sieve cylinder 2. The amplitudes and frequencies of the vibrations of all the ultrasonic transducers 31 are the same. In this embodiment, the sieve cylinder 2 is cylindrical, and there are six brackets 321. The brackets 321 are equidistantly distributed around the central axis of the sieve cylinder 2, ensuring that when the brackets 321 transmit ultrasonic vibrations to the sieve cylinder 2, each part of the sieve cylinder 2 can be evenly affected by the vibration frame 32. The ultrasonic transducers 31 are evenly spaced around the outer surface of the sieve cylinder 2 and distributed on the brackets 321, ensuring that each bracket 321 can generate the same amplitude and frequency, and each part of the sieve cylinder 2 is evenly vibrated.

[0026] As Figure 1As shown in FIG. -2, the vibration mechanism 3 further includes a connecting member 34. Every two brackets 321 are fixed by the connecting member 34. Wherein, the distance between the connecting member 34 and the ultrasonic vibration frame 32 is adjustable. The connecting member 34 can effectively improve the vibration consistency between the brackets 321, avoiding the phenomenon that the amplitudes between the brackets 321 change repeatedly and regularly, which causes the sieve cylinder 2 to deform regularly, and preventing the sieve mesh 21 from being broken due to repeated bending along the fixed creases, thus prolonging the service life of the sieve mesh. The ultrasonic vibrating screen further includes at least one positioning block 4. The positioning block 4 is sleeved on the connecting member 34, and the positioning block 4 is connected to the sieve cylinder 2. During the process of screening battery powder with the sieve mesh 21, the position of the positioning block 4 can be adjusted to achieve the effect of adjusting the center of gravity and the natural frequencies at different positions of the sieve mesh 21, changing the bending lines on the sieve mesh 21, and avoiding the situation where the sieve mesh 21 is broken. The connecting member 34 is an arc-shaped screw rod. The threads of the connecting member 34 are located at opposite ends of the connecting member 34. Each end of the connecting member 34 is screwed onto the bracket 321 through the thread. The positioning block 4 is slidably sleeved outside the connecting member 34. The staff can directly slide the positioning block 4 on the connecting member 34 to change the position of the positioning block 4, realizing the rapid adjustment of the positioning block 4.

[0027] As shown in Figure 1 FIG. -3, the positioning block 4 includes a top block 41, a body 42 and a telescopic block 43. The connecting member 34 is sandwiched between the top block 41 and the body 42. The telescopic block 43 is located on the side of the body 42 facing away from the top block 41, and the telescopic block 43 abuts against the sieve cylinder 2. The top block 41 is provided with a threaded through hole 411. The body 42 is provided with a through hole 421 corresponding to the threaded through hole 411. The through hole 421 is aligned with the threaded through hole 411. A clamping rod 44 is arranged in the through hole 421. A regulating screw 45 is screwed into the threaded through hole 411. The regulating screw 45 abuts against one end of the clamping rod 44. The other end of the clamping rod 44 away from the regulating screw 45 abuts against the telescopic block 43. The clamping rod 44 moves as the regulating screw 45 moves. The telescopic block 43 is made of silica gel or a plastic block with certain toughness. The telescopic block 43 can increase the buffering to the sieve cylinder 2. The staff can rotate the regulating screw 45 to make the regulating screw 45 extend into or out of the threaded through hole 411, thereby changing the extending length of the regulating screw 45 in the threaded through hole 411, and further changing the pressure of the clamping rod 44 on the telescopic block 43, and adjusting the tightness between the positioning block 4 and the sieve cylinder 2. The telescopic block 43 can indirectly increase the contact fixing points between the vibration frame 32 and the sieve cylinder 2, changing the center of gravity of the sieve mesh 21 and the sieve cylinder 2, and avoiding the sieve mesh 21 from being broken due to repeated bending along a certain bending line.

[0028] As shown in Figure 1As shown, the ultrasonic vibrating screen further includes a counterweight 5, and the counterweight 5 is connected to the vibrating frame 32 or the connecting member 34. During the process of screening battery powder with the screen mesh 21, the position of the counterweight 5 can be adjusted to achieve the effects of adjusting the center of gravity of the screen mesh 21 and the natural frequencies at different positions, changing the bending lines on the screen mesh 21, and avoiding the situation where the screen mesh 21 is broken. The counterweight 5 is in a circular ring shape, the counterweight 5 is slidably sleeved outside the connecting rod, a threaded hole 51 is formed in the side surface of the counterweight 5, a fixing screw is screwed into the threaded hole 51, and the fixing screw passes through the threaded hole 51 and abuts against the connecting member 34. The staff can change the position of the counterweight 5 by sliding the counterweight 5 on the connecting member 34, and then tighten the fixing screw so that the fixing screw on the counterweight 5 abuts against the connecting rod, thereby locking the position of the counterweight 5 on the connecting member 34.

[0029] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An ultrasonic vibrating screen, characterized in that, include: A base frame, wherein an elastic body is provided on the base frame; At least two sieve cylinders, the sieve cylinders are arranged in sequence from bottom to top, each sieve cylinder is provided with a sieve mesh, and one of the sieve cylinders is connected to the base frame through an elastic body; and A vibration mechanism, wherein the vibration mechanism comprises a vibration frame and at least two ultrasonic transducers, the sieve cylinder is fixed to the vibration frame, the ultrasonic transducer is fixed to the vibration frame, and the ultrasonic transducer drives the vibration frame to vibrate; The vibration frame includes a bracket and at least two vibration rings, the vibration rings correspond to the screen drum one by one, the vibration rings are sleeved on the outer side of the screen drum and fixed to the screen drum, and the vibration rings are fixed by the bracket; There are multiple brackets, the brackets extend from top to bottom, each bracket is fixed to at least one ultrasonic transducer, and the brackets are distributed at intervals around the outer surface of the screen cylinder; The vibration mechanism also includes a connecting piece, and each two brackets are fixed to each other through the connecting piece; It also includes at least one positioning block, which is sleeved on the connecting piece and connected to the screen drum; The connecting piece is an arc-shaped rod, and the positioning block can be slidably sleeved outside the connecting piece; The positioning block includes a top block, a main body and a telescopic block, the connecting piece is clamped between the top block and the main body, the telescopic block is located on the side of the main body facing away from the top block, and the telescopic block abuts against the screen cylinder, the top block is provided with a threaded through hole, the main body is provided with a through hole corresponding to the threaded through hole, a clamping rod is provided in the through hole, an adjusting screw is screwed on the threaded through hole, the adjusting screw abuts against one end of the clamping rod, and the other end of the clamping rod away from the adjusting screw abuts against the telescopic block.

2. The ultrasonic vibrating screen according to claim 1, characterized in that: The ultrasonic transducers are distributed on the bracket at intervals around the outer surface of the screen cylinder.

3. The ultrasonic vibrating screen according to claim 1, wherein: It also includes a counterweight block, which is connected to the vibration frame or the connecting member.

4. The ultrasonic vibrating screen according to claim 3, characterized in that: The counterweight block is in the shape of a ring and can be slidably sleeved outside the connecting piece. A threaded hole is provided on the side of the counterweight block. A fixing screw is screwed into the threaded hole. The fixing screw passes through the threaded hole and abuts against the connecting piece.

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