Discharge screening device of silicon-carbon negative electrode material production line based on CVD (Chemical Vapor Deposition) method

Abstract

The utility model belongs to the field of silicon-carbon cathode material production, and particularly relates to a discharge screening device of a silicon-carbon cathode material production line based on a CVD (chemical vapor deposition) method, which comprises an operation cylinder, a mounting frame is assembled on the operation cylinder, a sliding rod is assembled on the mounting frame, a sliding block is assembled on the sliding rod, and an elliptical frame is assembled on the sliding block. Operation racks are fixedly assembled on the two symmetrical inner walls of the oval frame, a mounting frame is fixedly assembled on the oval frame, a stand column is fixedly assembled on the mounting frame, a traction rack is fixedly assembled on the top of the stand column, assembly blocks are symmetrically and fixedly assembled on an operation cylinder, rotating rods are movably assembled on the assembly blocks, and a semicircular box is fixedly assembled between the two rotating rods. According to the discharging screening device of the silicon carbon negative electrode material production line based on the CVD method, through cooperation of the traction racks and the semicircular boxes, the problem that the screening effect is affected due to the fact that overlapped parts of existing particle materials can appear in a screening structure and cannot be effectively screened is solved.

Description

Technical Field

[0001] The utility model relates to the field of silicon-carbon negative electrode material production, in particular to a material discharging screening device of a silicon-carbon negative electrode material production line based on a CVD method. Background Art

[0002] CVD carbon-coated silicon-carbon negative electrode material is a high-performance negative electrode material for lithium-ion batteries. This material is produced by adopting industrially feasible processes, including aerosol spray drying, magnesium thermal reduction and chemical vapor deposition (CVD) carbon coating, and has excellent electrochemical performance and cycle stability. Among them, CVD carbon coating is a key step, which has an important influence on the performance of silicon-carbon composite materials. Through the CVD process, carbon can be coated on the surface of the silicon-carbon composite material to form a layer of carbon film, which can effectively improve the electronic conductivity of the material and inhibit the volume expansion of the silicon material during the lithium insertion and de-lithiation process, thereby improving the electrochemical performance of the material.

[0003] The existing silicon-carbon negative electrode material is in granular form. The silicon-carbon negative electrode material production line based on the CVD method is used to process the silicon-carbon negative electrode material. The particle diameters of the silicon-carbon negative electrode material are different, so it needs to be classified and processed. At this time, a screening device is needed. However, the existing silicon-carbon negative electrode material production line still has the following problems in the screening process:

[0004] Existing granular materials will have overlapping parts inside the screening structure, and these parts cannot be effectively screened, affecting the screening effect. Therefore, it is necessary to use the discharge screening device of the silicon-carbon negative electrode material production line based on the CVD method in the existing silicon-carbon negative electrode material production field. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art, the existing granular materials have overlapping parts inside the screening structure, and these parts cannot be effectively screened and processed, affecting the screening effect. The utility model proposes a discharge screening device for a silicon-carbon negative electrode material production line based on the CVD method.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a discharging screening device for a silicon-carbon negative electrode material production line based on a CVD method, comprising an operating cylinder, an inner wall of the operating cylinder is fixedly equipped with a mounting frame, the inner wall of the mounting frame is symmetrically fixedly equipped with sliding rods, the sliding rods are movably equipped with sliding blocks, an elliptical frame is fixedly equipped between the two sliding blocks, the two symmetrical inner walls of the elliptical frame are fixedly equipped with operating racks, the elliptical frame is fixedly equipped with a mounting frame, the mounting frame is fixedly equipped with a column, the column is located on one side of the mounting frame, the top of the column is fixedly equipped with a traction rack, the operating cylinder is symmetrically fixedly equipped with assembly blocks, the assembly blocks are movably equipped with rotating rods, a semicircular box is fixedly equipped between the two rotating rods, and the semicircular box is provided with a first sieve hole.

[0007] Preferably, a transmission gear is fixedly mounted on the rotating rod, and the transmission gear is toothedly assembled with the traction rack.

[0008] Preferably, a sieve box is fixedly mounted on one end of the mounting frame, the sieve box is located below the semicircular box, and a second sieve hole is provided on the sieve box.

[0009] Preferably, an operating motor is fixedly mounted on the surface of the operating cylinder, and an operating rod is fixedly mounted on the output end of the operating motor.

[0010] Preferably, a sector gear is fixedly mounted on one end of the operating rod, the sector gear is located between the two operating racks, and the sector gear is toothedly mounted only on one of the operating racks.

[0011] Preferably, a conical funnel is fixedly mounted on the inner wall of the operating cylinder, and the conical funnel is located below the screen box.

[0012] Preferably, a drainage slide is fixedly mounted on the bottom of the conical funnel, and one end of the drainage slide passes through the operating cylinder.

[0013] The utility model is beneficial in that:

[0014] The utility model pours the silicon-carbon negative electrode material into the semicircular box, starts the operating motor, so that the operating rod drives the fan-shaped gear to rotate, and the fan-shaped gear is respectively assembled with only one of the operating racks for tooth pattern, and the elliptical frame reciprocates on the sliding rod through the sliding block, and the column drives the traction rack to reciprocate, and the traction rack drives the rotating rod on the transmission gear to reciprocate on the assembly block, so that the first sieve hole on the semicircular box can screen the silicon-carbon negative electrode material, and at the same time, the elliptical frame drives the sieve box on the mounting frame to reciprocate, so that the second sieve hole on the sieve box can screen the silicon-carbon negative electrode material for the second time, and the silicon-carbon negative electrode material screened twice is moved to improve the screening effect, and the screened silicon-carbon negative electrode material falls into the conical funnel, and then the silicon-carbon negative electrode material is conveniently discharged by the drainage slide, so as to improve the operating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the discharge screening device of the silicon-carbon negative electrode material production line based on the CVD method of the utility model;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of a discharging and screening device of a silicon-carbon negative electrode material production line based on a CVD method of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the discharge screening device of the silicon-carbon negative electrode material production line based on the CVD method of the utility model;

[0019] Figure 4 It is a schematic diagram of the guiding mechanism structure of the utility model.

[0020] In the figure:

[0021] 10. Operating cylinder; 11. Assembly block; 12. Rotating rod; 13. Semicircular box;

[0022] 20. first sieve hole; 21. transmission gear; 22. traction rack; 23. sieve box;

[0023] 30. Second sieve hole; 31. Column; 32. Conical funnel; 33. Drainage chute;

[0024] 40. operating motor; 41. sliding rod; 42. sliding block; 43. elliptical frame;

[0025] 50. operating rack; 51. operating lever; 52. sector gear; 53. mounting frame;

[0026] 60. Installation frame. DETAILED DESCRIPTION

[0027] 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.

[0028] The following is combined with Figure 1 —4 further details of this application,

[0029] The present application embodiment discloses a discharging screening device for a silicon-carbon negative electrode material production line based on a CVD method. Figure 2 and Figure 4The discharging screening device of the silicon-carbon negative electrode material production line based on the CVD method comprises an operating cylinder 10, the inner wall of the operating cylinder 10 is fixedly equipped with a mounting frame 60, the inner wall of the mounting frame 60 is symmetrically fixedly equipped with slide bars 41, the slide bars 41 are movably equipped with slide blocks 42, an elliptical frame 43 is fixedly equipped between the two slide blocks 42, the symmetrical inner walls of the elliptical frame 43 are fixedly equipped with operating racks 50, the elliptical frame 43 is fixedly equipped with a mounting frame 53, the mounting frame 53 is fixedly equipped with a column 31, and the column 31 is located at the mounting frame On one side of 60, a traction rack 22 is fixedly mounted on the top of the column 31, an assembly block 11 is symmetrically fixedly mounted on the operating cylinder 10, and a rotating rod 12 is movably mounted on the assembly block 11. A semicircular box 13 is fixedly mounted between the two rotating rods 12, and a first sieve hole 20 is arranged on the semicircular box 13. A transmission gear 21 that is toothed with the traction rack 22 is fixedly mounted on one rotating rod 12. A sieve box 23 is fixedly mounted on one end of the mounting frame 53. The sieve box 23 is located below the semicircular box 13, and a first sieve hole 20 is arranged on the semicircular box 13. The second sieve hole 30 is provided. The surface of the operating cylinder 10 is fixedly equipped with an operating motor 40. The output end of the operating motor 40 is fixedly equipped with an operating rod 51. One end of the operating rod 51 is fixedly equipped with a sector gear 52. The sector gear 52 is located between the two operating racks 50. The sector gear 52 is only toothed with one of the operating racks 50. When the operating motor 40 is started, the operating rod 51 drives the sector gear 52 to rotate. The sector gear 52 is only toothed with one of the operating racks 50. The elliptical frame 43 By reciprocating the sliding block 42 on the sliding rod 41, the column 31 drives the traction rack 22 to reciprocate, and the traction rack 22 drives the rotating rod 12 on the transmission gear 21 to reciprocate on the assembly block 11, so that the first sieve hole 20 on the semicircular box 13 can screen the silicon-carbon negative electrode material. At the same time, the elliptical frame 43 drives the sieve box 23 on the mounting frame 53 to reciprocate, so that the second sieve hole 30 on the sieve box 23 can screen the silicon-carbon negative electrode material for the second time. The silicon-carbon negative electrode material is moved for the two times of screening, so as to improve the screening effect.

[0030] Reference Figure 1 and Figure 2 as well as Figure 3 The inner wall of the operating cylinder 10 is fixedly equipped with a conical funnel 32, and the conical funnel 32 is located below the screen box 23. The bottom of the conical funnel 32 is fixedly equipped with a drainage chute 33. One end of the drainage chute 33 passes through the operating cylinder 10. The screened silicon-carbon negative electrode material falls into the conical funnel 32, and then the drainage chute 33 facilitates the discharge of the silicon-carbon negative electrode material, thereby improving the operating effect.

[0031] Working principle: Pour the silicon-carbon negative electrode material into the semicircular box 13, start the operating motor 40, so that the operating rod 51 drives the fan gear 52 to rotate, and the fan gear 52 is only toothed with one of the operating racks 50, and the elliptical frame 43 reciprocates on the slide rod 41 through the sliding block 42, and the column 31 drives the traction rack 22 to reciprocate, and the traction rack 22 drives the rotating rod 12 on the transmission gear 21 to reciprocate on the assembly block 11, so that the first sieve hole 20 on the semicircular box 13 can screen the silicon-carbon negative electrode material, and at the same time, the elliptical frame 43 drives the sieve box 23 on the mounting frame 53 to reciprocate, so that the second sieve hole 30 on the sieve box 23 can screen the silicon-carbon negative electrode material for the second time. The sieved silicon-carbon negative electrode material moves twice to improve the screening effect, and the sieved silicon-carbon negative electrode material falls into the conical funnel 32, and then the drainage slide 33 is convenient for discharging the silicon-carbon negative electrode material, thereby improving the operating effect.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A discharging screening device for a silicon-carbon negative electrode material production line based on a CVD method, characterized in that: The invention comprises an operating cylinder (10), wherein the inner wall of the operating cylinder (10) is fixedly equipped with a mounting frame (60), the inner wall of the mounting frame (60) is symmetrically fixedly equipped with a sliding rod (41), each sliding block (42) is movably equipped on the sliding rod (41), an elliptical frame (43) is fixedly equipped between the two sliding blocks (42), the symmetrical inner walls of the elliptical frame (43) are fixedly equipped with an operating rack (50), and the elliptical frame (43) is fixedly equipped with a mounting frame (53) A column (31) is fixedly mounted on the mounting frame (53), the column (31) is located on one side of the mounting frame (60), a traction rack (22) is fixedly mounted on the top of the column (31), an assembly block (11) is symmetrically fixedly mounted on the operating cylinder (10), a rotating rod (12) is movably mounted on the assembly block (11), a semicircular box (13) is fixedly mounted between the two rotating rods (12), and a first sieve hole (20) is arranged on the semicircular box (13).

2. The discharging screening device of the silicon-carbon negative electrode material production line based on the CVD method according to claim 1 is characterized in that: A transmission gear (21) is fixedly mounted on the rotating rod (12), and the transmission gear (21) and the traction rack (22) are toothed.

3. The material discharging and screening device of the silicon-carbon negative electrode material production line based on the CVD method according to claim 2 is characterized in that: A sieve box (23) is fixedly mounted on one end of the mounting frame (53). The sieve box (23) is located below the semicircular box (13), and a second sieve hole (30) is provided on the sieve box (23).

4. The material discharging and screening device of the silicon-carbon negative electrode material production line based on the CVD method according to claim 3 is characterized in that: An operating motor (40) is fixedly mounted on the surface of the operating cylinder (10), and an operating rod (51) is fixedly mounted on the output end of the operating motor (40).

5. The material discharging and screening device of the silicon-carbon negative electrode material production line based on the CVD method according to claim 4 is characterized in that: A sector gear (52) is fixedly mounted on one end of the operating rod (51), the sector gear (52) is located between the two operating racks (50), and the sector gear (52) is toothedly mounted on only one of the operating racks (50).

6. The material discharging and screening device of the silicon-carbon negative electrode material production line based on the CVD method according to claim 1, characterized in that: A conical funnel (32) is fixedly mounted on the inner wall of the operating cylinder (10), and the conical funnel (32) is located below the screen box (23).

7. The material discharging and screening device of the silicon-carbon negative electrode material production line based on the CVD method according to claim 6, characterized in that: A drainage slideway (33) is fixedly mounted on the bottom of the conical funnel (32), and one end of the drainage slideway (33) passes through the operating cylinder (10).

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