Pre-filtering structure of negative electrode binder

Abstract

The utility model discloses a pre-filtering structure of a cathode binder, which comprises a bottom plate and a filtering tank, the top of the bottom plate is provided with symmetrical support plates, the inside of each support plate is provided with a vibration mechanism, and the inside of the filtering tank is provided with a filter screen cylinder, and the utility model relates to the technical field of cathode binder preparation. According to the pre-filtering structure of the negative electrode binder, control blocks on the two sides of the filtering tank are shifted to drive sliding blocks, sliding rods and mounting blocks to synchronously slide towards the inner side, so that the mounting blocks slide on the inner surfaces of the mounting grooves, the protruding ends of the mounting blocks slide out of groove openings in the inner walls of the mounting grooves, and then a worker can directly take out a filtering net cylinder from a tank opening; according to the pre-filtering device for the negative electrode binder, the filter screen cylinder can be quickly disassembled, and the mounting mechanism is arranged, so that the filter screen cylinder can be quickly disassembled, and the filter screen cylinder can be conveniently and regularly replaced or cleaned, and therefore, the pre-filtering efficiency of mixed raw materials in the negative electrode binder processing process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of preparation of negative electrode binders, in particular to a pre-filtering structure of negative electrode binders. Background Art

[0002] The main function of negative electrode binder in lithium batteries is to bind the active material to the current collector. Although its cost accounts for a small proportion, it has an important influence on the chemical properties of electrodes and batteries. Depending on the solvent, lithium battery binders can be divided into oily and water-based. The positive electrode generally uses oily binders, while the negative electrode generally uses water-based binders.

[0003] In the production process of the existing negative electrode binder, it is necessary to carry out a mixed reaction with a variety of solvents and raw materials. After the reaction between the solvent and the raw material is completed, a pre-filtration operation needs to be performed through a filtering structure. After a long period of filtration, large particles of impurities that have not been completely reacted are easily accumulated on the surface of the filter, which is easy to affect the filtration efficiency. In addition, most of the existing filter nets are installed on the inner wall of the filter structure by bolts, which is not convenient for disassembly and cleaning. In addition, when filtering, the existing filter structure has a certain viscosity in the mixed product of the raw material and the solvent, and the filter net is fixed, so the filtration efficiency is slow. For this reason, the utility model provides a pre-filtration structure for a negative electrode binder. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a pre-filtration structure for a negative electrode binder, which solves the problem that the filter screen in the existing pre-filtration structure is difficult to disassemble and clean, and the existing filtration structure has a low filtration efficiency when filtering a relatively viscous mixture.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a pre-filtration structure of a negative electrode binder, comprising a base plate and a filter tank, a symmetrical support plate is installed on the top of the base plate, a vibration mechanism is provided inside the support plate, a filter mesh cylinder is provided inside the filter tank, a mounting mechanism is provided on the inner wall of the filter tank, the mounting mechanism comprises: a mounting assembly, comprising a connecting ring installed on the surface of the filter tank and a support block installed on the inner wall of the filter tank, one end of the support block is fixedly connected to the inner surface of the connecting ring, a sliding rod is slidably connected inside the support block, one end of the sliding rod is fixedly connected to the mounting block, the surface of the mounting block is slidably connected to the top of the support block, the surface of the sliding rod is fixedly connected to a mounting spring, one end of the mounting spring is fixedly connected to the inner wall of the support block; a control assembly, arranged inside the connecting ring.

[0006] Preferably, the control assembly comprises a sliding block slidably mounted inside the connecting ring, one side of the sliding block is fixedly connected to the other end of the sliding rod, and the top end of the sliding block is fixedly connected to the control block.

[0007] Preferably, a mounting groove is provided at the bottom of the filter screen cylinder, and the inner surface of the mounting groove is snap-fitted with the surface of the mounting block.

[0008] Preferably, the vibration mechanism includes: a vibration component, including a sliding plate installed on the left side of the connecting ring and a movable plate installed on the right side of the connecting ring, a return spring is fixedly connected to the left side of the sliding plate, one end of the return spring is fixedly connected to the inner wall of the support plate, and a movable block is fixedly connected to the top of the movable plate; a driving component is arranged at the bottom of the right support plate.

[0009] Preferably, the driving assembly includes a driving motor installed at the bottom of the right supporting plate, one end of the output shaft of the driving motor is fixedly connected to an eccentric wheel via a coupling, and the surface of the eccentric wheel fits with the surface of the moving block.

[0010] Preferably, the interior of the left support plate is slidably connected to the surface of the sliding plate, the interior of the right support plate is slidably connected to the interior of the moving plate, and the top of the right support plate is slidably connected to the surface of the moving block.

[0011] Beneficial Effects

[0012] The utility model provides a pre-filtration structure for negative electrode binder. Compared with the prior art, it has the following beneficial effects:

[0013] (1) The pre-filtration structure of the negative electrode binder drives the sliding block, the sliding rod and the mounting block to slide inward synchronously by toggling the control blocks on both sides of the filter tank, so that the mounting block slides on the inner surface of the mounting groove, and the protruding end of the mounting block slides out of the notch on the inner wall of the mounting groove. Then, the staff can directly take out the filter screen cylinder from the tank mouth, thereby realizing the rapid disassembly of the filter screen cylinder. By providing the mounting mechanism, the rapid disassembly operation of the filter screen cylinder is realized, which is convenient for regular replacement or cleaning of the filter screen cylinder, thereby improving the pre-filtration efficiency of the mixed raw materials in the negative electrode binder processing process.

[0014] (2) The pre-filtering structure of the negative electrode binder starts the driving motor to drive the eccentric wheel to rotate. The rotation of the eccentric wheel causes the moving block, the moving plate, the connecting ring and the filter tank to slide synchronously to the left as a whole, so that the sliding plate on the left side of the connecting ring slides inside the left support plate, thereby squeezing the reset spring. As the eccentric wheel continues to rotate, the reset spring causes the sliding plate, the moving block, the moving plate, the connecting ring and the filter tank to slide synchronously to the right as a whole without being subjected to force, thereby causing the filter tank to slide back and forth left and right. By providing a vibration mechanism, the filter tank and the filter screen cylinder can slide back and forth left and right synchronously under the influence of the driving motor and the elasticity of the reset spring, thereby achieving vibration, thereby accelerating the filtering efficiency of the filter screen cylinder on the raw material and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the external structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the filter tank of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal explosion structure of the filter tank of the utility model;

[0018] Figure 4 For the utility model Figure 3 The enlarged schematic diagram at A in the middle;

[0019] Figure 5 It is a three-dimensional schematic diagram of the vibration component of the utility model.

[0020] In the figure: 1-bottom plate, 2-filter tank, 3-support plate, 4-vibration mechanism, 41-vibration assembly, 411-sliding plate, 412-moving plate, 413-reset spring, 414-moving block, 42-driving assembly, 421-driving motor, 422-eccentric wheel, 5-filter net cylinder, 6-mounting mechanism, 61-mounting assembly, 611-connecting ring, 612-support block, 613-sliding rod, 614-mounting block, 615-mounting spring, 62-control assembly, 621-sliding block, 622-control block, 7-mounting groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 , the utility model provides two technical solutions:

[0023] Embodiment 1

[0024] A pre-filtering structure for a negative electrode binder comprises a bottom plate 1 and a filter tank 2, a tank cover is installed on the top of the filter tank 2, a connecting pipe connected to an external mixing device is installed on the top of the tank cover, a symmetrical support plate 3 is installed on the top of the bottom plate 1, a vibration mechanism 4 is arranged inside the support plate 3, a filter screen cylinder 5 is arranged inside the filter tank 2, an annular guide plate is installed on the top of the filter tank 2, the annular guide plate is installed above the filter screen cylinder 5, and an installation mechanism 6 is arranged on the inner wall of the filter tank 2, wherein the installation mechanism 6 comprises: an installation component 61, comprising an installation component 62 installed on the filter The connecting ring 611 on the surface of the tank 2 and the supporting block 612 installed on the inner wall of the filter tank 2, one end of the supporting block 612 is fixedly connected to the inner surface of the connecting ring 611, the interior of the supporting block 612 is slidably connected with a sliding rod 613, one end of the sliding rod 613 is fixedly connected with a mounting block 614, the surface of the mounting block 614 is slidably connected to the top of the supporting block 612, the surface of the sliding rod 613 is fixedly connected with a mounting spring 615, and the mounting spring 615 is not affected by external forces, so that the mounting block 614 is always engaged with the inner surface of the mounting groove 7 , one end of the mounting spring 615 is fixedly connected to the inner wall of the support block 612; the control assembly 62 is arranged inside the connecting ring 611, and the control assembly 62 includes a sliding block 621 slidably mounted inside the connecting ring 611, one side of the sliding block 621 is fixedly connected to the other end of the sliding rod 613, and the top of the sliding block 621 is fixedly connected to the control block 622, and the bottom of the filter cylinder 5 is provided with a mounting groove 7, and the inner surface of the mounting groove 7 is snap-fitted with the surface of the mounting block 614, and the sliding block 621 is driven by the control blocks 622 on both sides of the filter tank 2. The movable block 621, the sliding rod 613 and the mounting block 614 slide inward synchronously, so that the mounting block 614 slides on the inner surface of the mounting groove 7, and the protruding end of the mounting block 614 slides out of the notch of the inner wall of the mounting groove 7. Then, the staff can directly take out the filter screen cartridge 5 from the tank mouth, thereby realizing the rapid disassembly of the filter screen cartridge 5. By providing the mounting mechanism 6, the rapid disassembly operation of the filter screen cartridge 5 is realized, which is convenient for regular replacement or cleaning of the filter screen cartridge 5, thereby improving the pre-filtration efficiency of the mixed raw materials in the negative electrode binder processing process.

[0025] Embodiment 2

[0026] The main difference from the first embodiment is:

[0027] A pre-filtering structure for negative electrode binder, wherein the vibration mechanism 4 comprises: a vibration assembly 41, comprising a sliding plate 411 installed on the left side of a connecting ring 611 and a moving plate 412 installed on the right side of the connecting ring 611, a return spring 413 is fixedly connected to the left side of the sliding plate 411, under the influence of the elasticity of the return spring 413, the surface of the eccentric wheel 422 is always in contact with the surface of the moving block 414, one end of the return spring 413 is fixedly connected to the inner wall of the support plate 3, and the top of the moving plate 412 is fixedly connected to the moving block 414; a driving assembly 4 2, arranged at the bottom of the right support plate 3, the driving assembly 42 includes a driving motor 421 installed at the bottom of the right support plate 3, the driving motor 421 is a three-phase asynchronous motor, and is connected to the external circuit through wires, one end of the output shaft of the driving motor 421 is fixedly connected to an eccentric wheel 422 through a coupling, the surface of the eccentric wheel 422 is in contact with the surface of the moving block 414, the interior of the left support plate 3 is slidably connected to the surface of the sliding plate 411, the interior of the right support plate 3 is slidably connected to the interior of the moving plate 412, and the top of the right support plate 3 The top of the right support plate 3 is provided with a slide groove for the sliding of the moving block 414. The eccentric wheel 422 is driven to rotate by starting the driving motor 421. The rotation of the eccentric wheel 422 causes the moving block 414, the moving plate 412, the connecting ring 611 and the filter tank 2 to slide to the left as a whole, so that the sliding plate 411 on the left side of the connecting ring 611 slides inside the left support plate 3, thereby squeezing the return spring 413. As the eccentric wheel 422 continues to rotate, the return spring 413 is pressed without force. The sliding plate 411, the moving block 414, the moving plate 412, the connecting ring 611 and the filter tank 2 are synchronously slid to the right as a whole, so that the filter tank 2 can slide back and forth left and right. By providing a vibration mechanism 4, the filter tank 2 and the filter screen cylinder 5 can slide back and forth left and right synchronously under the drive of the driving motor 421 and the influence of the elasticity of the return spring 413 to achieve vibration, thereby accelerating the filtering efficiency of the filter screen cylinder 5 on the raw material and improving the working efficiency. At the same time, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] During operation, first connect the connecting pipe installed on the top of the tank cover to the discharge port of the mixing device. The mixing device is used to mix the raw materials required for the processing of the negative electrode binder. Then, when the mixed materials enter the interior of the filter tank 2 through the connecting pipe, at this time, the eccentric wheel 422 is driven to rotate by starting the driving motor 421. The rotation of the eccentric wheel 422 causes the moving block 414, the moving plate 412, the connecting ring 611 and the filter tank 2 to slide to the left as a whole synchronously, so that the sliding plate 411 on the left side of the connecting ring 611 slides inside the left support plate 3, thereby squeezing the return spring 413. As the eccentric wheel 422 continues to rotate, the return spring 413 causes the sliding plate 411, the moving block 414, the moving plate 412, the connecting ring 611 and the filter tank 2 to slide to the right as a whole synchronously without being subjected to force. The filter tank 2 is made to slide back and forth left and right to achieve vibration, thereby accelerating the filtering efficiency of the filter screen cartridge 5 on the raw materials and improving the working efficiency. After the work is completed, raw materials that are not completely mixed and have larger particles will remain on the surface of the filter screen cartridge 5. At this time, by opening the tank cover on the top of the filter tank 2, the control blocks 622 on both sides of the filter tank 2 are moved to drive the sliding block 621, the sliding rod 613 and the mounting block 614 to slide inward synchronously, so that the mounting block 614 slides on the inner surface of the mounting groove 7, and the raised end of the mounting block 614 slides out of the notch on the inner wall of the mounting groove 7. Subsequently, the staff can directly take out the filter screen cartridge 5 from the tank mouth, thereby realizing the rapid disassembly of the filter screen cartridge 5, facilitating the regular replacement or cleaning of the filter screen cartridge 5, thereby improving the pre-filtration efficiency of the mixed raw materials in the negative electrode binder processing process.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative electrode binder pre-filtration structure, comprising a bottom plate (1) and a filter tank (2), characterized in that: A symmetrical support plate (3) is mounted on the top of the bottom plate (1); a vibration mechanism (4) is arranged inside the support plate (3); a filter screen cylinder (5) is arranged inside the filter tank (2); a mounting mechanism (6) is arranged on the inner wall of the filter tank (2); the mounting mechanism (6) comprises: a mounting assembly (61), comprising a connecting ring (611) mounted on the surface of the filter tank (2) and a supporting block (612) mounted on the inner wall of the filter tank (2); one end of the supporting block (612) is connected to the connecting ring (611); The inner surface of the support block (612) is fixedly connected, the interior of the support block (612) is slidably connected to a sliding rod (613), one end of the sliding rod (613) is fixedly connected to a mounting block (614), the surface of the mounting block (614) is slidably connected to the top of the support block (612), the surface of the sliding rod (613) is fixedly connected to a mounting spring (615), one end of the mounting spring (615) is fixedly connected to the inner wall of the support block (612); the control component (62) is arranged inside the connecting ring (611).

2. The pre-filtration structure of a negative electrode binder according to claim 1, characterized in that: The control assembly (62) comprises a sliding block (621) slidably mounted inside the connecting ring (611), one side of the sliding block (621) is fixedly connected to the other end of the sliding rod (613), and the top end of the sliding block (621) is fixedly connected to the control block (622).

3. The pre-filtration structure of a negative electrode binder according to claim 1, characterized in that: The bottom of the filter screen cylinder (5) is provided with a mounting groove (7), and the inner surface of the mounting groove (7) is snap-fitted to the surface of the mounting block (614).

4. The pre-filtration structure of a negative electrode binder according to claim 1, characterized in that: The vibration mechanism (4) comprises: a vibration component (41), comprising a sliding plate (411) mounted on the left side of the connecting ring (611) and a moving plate (412) mounted on the right side of the connecting ring (611), a return spring (413) being fixedly connected to the left side of the sliding plate (411), one end of the return spring (413) being fixedly connected to the inner wall of the support plate (3), and a moving block (414) being fixedly connected to the top of the moving plate (412); and a driving component (42), which is arranged at the bottom of the right support plate (3).

5. The pre-filtration structure of a negative electrode binder according to claim 4, characterized in that: The driving assembly (42) comprises a driving motor (421) mounted on the bottom of the right supporting plate (3); one end of the output shaft of the driving motor (421) is fixedly connected to an eccentric wheel (422) via a coupling; the surface of the eccentric wheel (422) is in contact with the surface of the moving block (414).

6. The negative electrode binder pre-filtration structure according to claim 4, characterized in that: The interior of the left support plate (3) is slidably connected to the surface of the sliding plate (411), the interior of the right support plate (3) is slidably connected to the interior of the moving plate (412), and the top of the right support plate (3) is slidably connected to the surface of the moving block (414).

Images