Uniform powder conveying device

Abstract

The invention discloses a uniform powder conveying device, and relates to the technical field of powder conveying, the uniform powder conveying device comprises a main frame, the main frame is provided with a blanking bin, a homogenizing pipeline, a vibration disc and a vibrator, a feed port of the homogenizing pipeline is connected with a discharge port of the blanking bin, and the feed port of the homogenizing pipeline is connected with a discharge port of the vibrating disc; a discharge port of the homogenizing pipeline is arranged right above the vibrating disc, and the vibrator drives the vibrating disc to vibrate; a material distributing layer is arranged in the homogenizing pipeline and comprises a plurality of material distributing plates; when the uniform feeding device is used, materials are uniformly conveyed to the vibration disc through the internal structure design of the homogenizing pipeline, and then are uniformly conveyed through vibration of the vibration disc, so that the uniform thickness of powder flow at the discharge port is ensured, the problem of powder caking is avoided, the problem of uneven feeding of the calender is solved, and the film forming effect of the calender is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder conveying, in particular to a uniform powder conveying device. BACKGROUND

[0002] Lithium battery is a kind of battery with lithium metal or lithium alloy as positive / negative electrode material and using non-aqueous electrolyte solution. In 1912, lithium metal battery was first proposed and studied by Gilbert N. Lewis. In the 1970s, M. S. Whittingham proposed and began to study lithium ion battery. Due to the very active chemical properties of lithium metal, the processing, preservation and use of lithium metal have very high requirements on the environment. With the development of science and technology, lithium battery has become the mainstream.

[0003] In the existing dry electrode preparation process, the fibrous electrode material needs to be broken into powder of a certain particle size and uniformly fed onto the working roller of the calender. The powder feeding and conveying is generally carried out by manually cooperating with a vibrator to feed the material to the calender. Simple vibration feeding often causes the powder flow thickness at the discharge port to be inconsistent or the powder to be caked, which adversely affects the film forming effect of the calender.

[0004] Therefore, there is an urgent need for a uniform powder conveying device to solve the above problems. SUMMARY

[0005] In view of the problems in the prior art, the present application solves the problems by using the following technical structure.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] A uniform powder conveying device, comprising: a main frame, a discharge bin, a homogenizing pipeline, a vibrating disc and a vibrator are arranged on the main frame, the feed inlet of the homogenizing pipeline is connected with the discharge outlet of the discharge bin, the discharge outlet of the homogenizing pipeline is arranged directly above the vibrating disc, and the vibrator drives the vibrating disc to vibrate.

[0008] A distribution layer is arranged in the homogenizing pipeline, the distribution layer comprises a plurality of distribution plates, the plurality of distribution plates are sequentially arranged from a first side of the homogenizing pipeline to a second side of the homogenizing pipeline, both ends of the distribution plate extend to a third side of the homogenizing pipeline and a fourth side of the homogenizing pipeline respectively, the first side and the second side are oppositely arranged, and the third side and the fourth side are oppositely arranged.

[0009] The distribution layer is provided with a plurality of layers from one end of the feed inlet of the homogenizing pipeline to one end of the discharge outlet of the homogenizing pipeline, and the distribution plates of adjacent two distribution layers are arranged in a staggered manner.

[0010] The cross section of the distribution plate in the third side direction is V-shaped or arc-shaped, and the opening end of the distribution plate faces the discharge port of the homogenizing pipe.

[0011] The top of the vibrating disc is provided with a trough and a plurality of channels, the trough is directly below the discharge port of the homogenizing pipe, and the plurality of channels extend from the trough to a side away from the homogenizing pipe.

[0012] The channels are linear, and the plurality of channels are arranged in parallel.

[0013] The channels extend from the trough to a side away from the homogenizing pipe in a tree topology.

[0014] The top of the vibrating disc is provided with a uniform plate, which is arranged on a side of the channel away from the trough.

[0015] One side of the main rack is provided with a sub-rack, the sub-rack is provided with a discharge bin, the inlet of the discharge bin is arranged at one end of the discharge port of the vibrating disc, the inlet of the discharge bin, the discharge port of the discharge bin and the discharge port of the vibrating disc are linear, and the extension directions of the inlet of the discharge bin, the discharge port of the discharge bin and the discharge port of the vibrating disc are the same.

[0016] The discharge bin is provided with a stirring shaft, one side of the discharge bin is provided with a second driving member, the second driving member is used to drive the stirring shaft to rotate, and the axial direction of the stirring shaft is consistent with the extension direction of the discharge port of the discharge bin.

[0017] The sub-rack is provided with a metering wheel and a first driving member, the metering wheel is arranged at the discharge port of the discharge bin, the annular side of the metering wheel is provided with a plurality of metering grooves, the metering grooves are linear, the extension direction of the metering grooves is consistent with the extension direction of the discharge port of the discharge bin, and the first driving member is used to drive the metering wheel to rotate.

[0018] The sub-rack is provided with a scraper, the scraper is arranged on one side of the annular side of the metering wheel, and one end of the scraper abuts against the annular side of the metering wheel.

[0019] The sub-rack is provided with a baffle, the baffle is arranged directly below the scraper, and the baffle is arranged obliquely from a side away from the direct below of the metering wheel to a side away from the direct below of the metering wheel, and the oblique direction is downward.

[0020] The main rack includes an upper rack and a lower rack arranged at the bottom of the upper rack, the discharge bin is arranged on the upper rack, the homogenizing pipe, the vibrating disc and the vibrator are arranged on the lower rack, and a weighing sensor is arranged between the upper rack and the lower rack.

[0021] The driving shaft is arranged in the down feeder from top to bottom, and a plurality of paddles are arranged around the driving shaft.

[0022] The discharging port of the down feeder is provided with a granulating mechanism, and the feeding port of the homogenizing pipe is connected with the discharging port of the granulating mechanism.

[0023] The discharging port of the down feeder is arranged at the bottom of the down feeder, and the top of the down feeder is provided with a feeding pipe.

[0024] The homogenizing pipe is vertically arranged.

[0025] The vibrating disc is horizontally arranged.

[0026] The feeding port and the discharging port of the discharging feeder are arranged at the top and the bottom of the discharging feeder respectively.

[0027] The above structure can achieve the following beneficial effects:

[0028] In use, the material is placed in the down feeder, and then the material enters the homogenizing pipe through the discharging port of the down feeder. Since a plurality of material distribution plates are arranged in the homogenizing pipe, the accumulated material is uniformly scattered after entering the homogenizing pipe, and then the scattered material falls on the vibrating disc at the discharging port of the homogenizing pipe. The vibrating disc vibrates under the driving of the vibrator, and the scattered material is uniformly conveyed to the discharging port of the vibrating disc. Through the internal structure design of the homogenizing pipe, the material is uniformly conveyed to the vibrating disc, and then uniformly conveyed through the vibration of the vibrating disc, so as to ensure the uniform thickness of the powder flow of the discharging port, avoid the problem of powder caking, solve the problem of uneven feeding of the calender, and improve the film forming effect of the calender. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic view of the embodiment;

[0030] Figure 2 It is a structural schematic view of the homogenizing pipe in the embodiment;

[0031] Figure 3 It is a structural schematic view of the homogenizing pipe in the embodiment;

[0032] Figure 4 It is a structural schematic view of the homogenizing pipe in the embodiment;

[0033] Figure 5 It is a structural schematic view of the vibrating disc and the vibrator in the embodiment;

[0034] Figure 6 It is a structural schematic view of the vibrating disc in the embodiment;

[0035] Figure 7 is a structural schematic view of the sub-rack in the embodiment;

[0036] Figure 8 is a structural sectional view of the sub-rack in the embodiment;

[0037] Figure 9 is a structural sectional view of the sub-rack in the embodiment;

[0038] In the figure: 1, a hopper; 2, a homogenizing pipeline; 3, a vibrating disc; 31, a trough; 32, a channel; 33, a material homogenizing plate; 4, a vibrator; 5, a material distributing plate; 6, a metering wheel; 61, a metering groove; 7, a scraper; 8, a discharge bin; 81, a stirring shaft; 9, a weighing sensor; 10, a driving shaft; 11, a paddle; 12, a granulating mechanism; 13, a feeding pipe; 14, a baffle; 15, an upper rack; 16, a lower rack. DETAILED DESCRIPTION

[0039] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, but not all the embodiments. Based on the embodiment in the present application, all other embodiments obtained by the person skilled in the art without making creative efforts should belong to the protection scope of the present application.

[0040] It should be noted that the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover the inclusions that are not exclusive, for example, a process, method, device, product or equipment including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0041] The following will be described in detail in combination with the drawings Figures 1-9 The present application will be further described in detail.

[0042] As Figures 1-3 shown, a uniform powder conveying device, comprising: a main rack, the main rack is provided with a hopper 1, a homogenizing pipeline 2, a vibrating disc 3 and a vibrator 4, the feeding port of the homogenizing pipeline 2 is connected with the discharge port of the hopper 1, the discharge port of the homogenizing pipeline 2 is arranged directly above the vibrating disc 3, and the vibrator 4 drives the vibrating disc 3 to vibrate;

[0043] The homogenizing pipeline 2 is provided with a material distribution layer, which comprises a plurality of material distribution plates 5 arranged in sequence from a first side of the homogenizing pipeline 2 to a second side of the homogenizing pipeline 2. The two ends of the material distribution plates 5 extend to a third side of the homogenizing pipeline 2 and a fourth side of the homogenizing pipeline 2, respectively. The first side and the second side are opposite to each other, and the third side and the fourth side are opposite to each other. In addition to the above structure, the material distribution layer can also be composed of a grid-shaped plate material to disperse the material.

[0044] Based on the above structure, when in use, the material is placed in the feeding bin 1, and then the material enters the homogenizing pipeline 2 through the discharge port of the feeding bin 1. Since the homogenizing pipeline 2 is provided with a plurality of material distribution plates 5, the accumulated material is uniformly dispersed after entering the homogenizing pipeline 2. Then, the dispersed material falls on the vibration disc 3 at the discharge port of the homogenizing pipeline 2. The vibration disc 3 vibrates to uniformly convey the dispersed material to the end of the discharge port of the vibration disc 3 under the driving of the vibrator 4. Through the internal structure design of the homogenizing pipeline 2, the material is uniformly conveyed to the vibration disc 3 and then uniformly conveyed through the vibration of the vibration disc 3, so as to ensure the uniform thickness of the powder flow at the discharge port and avoid the problem of powder caking, solve the problem of uneven feeding of the calender, and improve the film forming effect of the calender.

[0045] As shown in Figures 2-4 , in order to further improve the uniformity of material dispersion, the material distribution layer is provided with a plurality of layers from one end of the feeding port of the homogenizing pipeline 2 to one end of the discharge port of the homogenizing pipeline 2. The material distribution plates 5 of adjacent two material distribution layers are arranged in a staggered manner. The material is dispersed multiple times through the arrangement of multiple layers of material distribution plates 5, which improves the dispersion effect of the material. In addition, the specific shape of the material distribution plates 5 is reasonably designed according to the production and processing requirements. In the embodiment, the cross section of the material distribution plates 5 in the third side direction is preferably V-shaped or arc-shaped. The open end of the material distribution plates 5 faces the discharge port of the homogenizing pipeline 2 (in the embodiment, the homogenizing pipeline 2 is preferably vertically arranged, that is, the open end of the material distribution plates 5 faces downward). In this way, the material will not be left on the material distribution plates 5, and the material will slide from both sides of the material distribution plates 5 after falling on the material distribution plates 5, effectively improving the uniformity of material dispersion.

[0046] As shown in Figure 5 and Figure 6As shown, the top of the vibrating disc 3 is provided with a trough 31 and a plurality of material channels 32, the trough 31 is located directly below the discharge port of the homogenizing pipe 2, and the plurality of material channels 32 extend from the trough 31 to the side away from the homogenizing pipe 2. After the material is dispersed by the homogenizing pipe 2, it falls uniformly into the trough 31. Through the driving of the vibrator 4, the vibrating disc 3 vibrates, causing the material to move uniformly in the direction of the plurality of material channels 32, and then the material is transported to the discharge port of the vibrating disc 3 through the plurality of material channels 32. The specific shape of the material channel 32 can be reasonably designed according to the actual production and use requirements. For example, the material channel 32 is in the form of a straight line, and the plurality of material channels 32 are arranged in parallel. In this embodiment, the specific structure of the material channel 32 can also be that the material channel 32 extends in a tree topology shape from the trough 31 to the side away from the homogenizing pipe 2, that is, the material channel 32 is sequentially provided with first, second, third, and so on levels from the trough to the side away from the homogenizing pipe 2. The tail of each first level material channel is provided with at least two second level material channels, the tail of each second level material channel is provided with at least two third level material channels, and so on. In this way, the material is uniformly transported to the end of the discharge port of the vibrating disc 3. In addition, the top of the vibrating disc 3 is provided with a material leveling plate 33, which is arranged on the side of the material channel 32 away from the trough 31. When the material is transported to the material leveling plate 33, the material passes over the material leveling plate 33 through vibration and is more evenly spread on the tail of the vibrating disc 3, and then is uniformly output.

[0047] As shown in Figure 1 , Figure 7 and Figure 8 , one side of the main rack is provided with a sub-rack, and the sub-rack is provided with a discharge bin 8. The inlet of the discharge bin 8 is arranged at one end of the discharge port of the vibrating disc 3. The inlet of the discharge bin 8, the discharge port of the discharge bin 8 and the discharge port of the vibrating disc 3 are all in the form of a straight line. The extension directions of the inlet of the discharge bin 8, the discharge port of the discharge bin 8 and the discharge port of the vibrating disc 3 are the same. In addition, the discharge bin 8 is provided with a stirring shaft 81, and one side of the discharge bin 8 is provided with a second driving member for driving the stirring shaft 81 to rotate. The axial direction of the stirring shaft 81 is consistent with the extension direction of the discharge port of the discharge bin 8. In this way, the second driving member drives the stirring shaft 81 to rotate, which avoids the caking of the material in the discharge bin 8, and at the same time ensures the uniform distribution of the material in the discharge bin 8 as much as possible. In addition, small nozzles can be arranged on the stirring shaft 81 and the bin wall of the discharge bin 8 for arch breaking and preventing material from sticking to the wall.

[0048] As shown in Figure 7 and Figure 8As shown, in order to ensure that the material is uniformly and quantitatively conveyed to the next process link, the sub-frame is provided with a quantitative wheel 6 and a first driving member, the quantitative wheel 6 is arranged at the discharge port of the discharge bin 8, the circumferential direction of the quantitative wheel 6 is uniformly provided with a plurality of metering grooves 61, the metering grooves 61 are in a straight line shape, the extension direction of the metering grooves 61 is consistent with the extension direction of the discharge port of the discharge bin 8, and the first driving member is used to drive the quantitative wheel 6 to rotate. In this way, the quantitative wheel 6 is driven to rotate by the first driving member, and the circumferential direction of the quantitative wheel 6 is sealed with the circumferential direction of the discharge port of the discharge bin 8. That is to say, during the rotation of the quantitative wheel 6, the material cannot leak to the outside between the circumferential side of the discharge port of the discharge bin 8 and the quantitative wheel 6, and the material can only enter the metering groove 61. When the metering groove 61 moves to the discharge port of the discharge bin 8, the material falls into the metering groove 61. When the metering groove 61 moves downward, the material falls from the metering groove 61 to the next process equipment. The advantage of this design is that the capacity of the metering groove 61 is fixed, and the rotation speed of the quantitative wheel 6 can be controlled by the first driving member, so as to control the output efficiency of the material. In actual use, a material level sensor can be arranged in the discharge bin 8 and at the discharge port of the discharge bin 8 to detect the material position, so as to realize real-time control of the material level and avoid the phenomenon of material agglomeration due to long-term high temperature.

[0049] Further optimization is that, as shown in the drawings, Figure 8 A scraper 7 is arranged on the sub-frame, the scraper 7 is arranged on one side of the circumferential direction of the quantitative wheel 6, one end of the scraper 7 abuts against the circumferential side of the quantitative wheel 6, and the side of the scraper 7 close to the quantitative wheel 6 can be made of soft material. When the metering groove 61 on the quantitative wheel 6 moves upward, one side of the scraper 7 sweeps across the metering groove 61 to clean the residual material in the metering groove 61. The scraped material falls to the next process equipment to ensure the accuracy of the quantitative material. A baffle 14 is arranged on the sub-frame, the baffle 14 is arranged directly below the scraper 7, and the baffle 14 is arranged obliquely from the side away from the quantitative wheel 6 to the side away from the quantitative wheel 6. The inclination direction is downward, the scraped material of the scraper 7 is guided, and the scraped material and the naturally falling material in the metering groove 61 fall in the same position to avoid the scraped material remaining in other positions of the equipment.

[0050] As shown in the drawings, Figure 1As shown, in order to monitor the amount of material in the hopper 1, the main frame includes an upper frame 15 and a lower frame 16 arranged at the bottom of the upper frame 15, the hopper 1 is arranged on the upper frame 15, the homogenizing pipe 2, the vibrating disc 3 and the vibrator 4 are arranged on the lower frame 16, and the weighing sensor 9 is arranged between the upper frame 15 and the lower frame 16. In this way, when the material falls from the hopper 1 or is added to the hopper 1, the overall weight of the upper frame 15 will change, and the change in weight can be monitored by the weighing sensor 9. When the feeding of the material in the hopper 1 is problematic, the value measured by the weighing sensor 9 can be obtained.

[0051] Further optimization is that, as shown in the drawings, Figure 9 The hopper 1 is provided with a drive shaft 10 arranged from top to bottom in the hopper 1, and a plurality of paddles 11 are arranged around the drive shaft 10. A second driving member is arranged on the hopper 1 for driving the drive shaft 10 to rotate. In this way, the second driving member drives the drive shaft 10 to rotate to stir the material in the hopper 1, so as to prevent the material in the hopper 1 from caking or blocking the hopper 1.

[0052] As shown in the drawings, Figure 1 And Figure 9 The discharge port of the hopper 1 is provided with a granulating mechanism 12, and the inlet of the homogenizing pipe 2 is connected with the discharge port of the granulating mechanism 12. By arranging the granulating mechanism 12, the fibrous material is broken into powder with uniform particle size, which is convenient for conveying and meets the requirements of the next calendering.

[0053] As shown in the drawings, Figure 1 In this embodiment, the discharge port of the hopper 1 is arranged at the bottom of the hopper 1, and the top of the hopper 1 is provided with a feeding pipe 13. The homogenizing pipe 2 is arranged vertically, and the vibrating disc 3 is arranged horizontally or gradually inclined downwardly towards the side of the discharge port 8. The inlet and the discharge port of the discharge port 8 are arranged at the top and the bottom of the discharge port 8, respectively. The material is input into the hopper 1 through the feeding pipe 13. The vertically arranged homogenizing pipe 2 can better uniformly distribute the powder from the granulating mechanism 12 and uniformly fall on the vibrating disc 3.

[0054] In summary, when in use, the material is placed in the discharging bin 1, then the material enters the granulating mechanism 12 through the discharging port of the discharging bin 1, is scattered into powder with uniform granularity through the granulating mechanism 12, then enters the homogenizing pipeline 2, and is uniformly scattered due to the arrangement of the plurality of material distributing plates 5 in the homogenizing pipeline 2. Then the scattered material falls on the vibrating disc 3 at the discharging port of the homogenizing pipeline 2, is uniformly conveyed to the end of the discharging port of the vibrating disc 3 through the driving of the vibrator 4, and finally falls into the discharging bin 8. Through the rotation of the quantitative wheel 6, the material is supplied to the next process equipment in a timed and quantitative manner. Through the internal structure design of the homogenizing pipeline 2, the material is uniformly conveyed to the vibrating disc 3, and then is uniformly conveyed through the vibration of the vibrating disc 3, so as to ensure the uniform thickness of the powder flow at the discharging port, solve the problem of uneven feeding of the calender, and improve the film forming effect of the calender.

[0055] The above is only the preferred embodiment of the present application, and the present application is not limited to the above embodiment. It can be understood that other improvements and changes directly derived or thought by those skilled in the art without departing from the spirit and concept of the present application should be considered to be included in the protection scope of the present application.

Claims

1. A uniform powder delivery device, comprising: include: The main frame is provided with a feeding hopper (1), a homogenizing pipe (2), a vibrating plate (3) and a vibrator (4). The inlet of the homogenizing pipe (2) is connected to the outlet of the feeding hopper (1). The outlet of the homogenizing pipe (2) is located directly above the vibrating plate (3). The vibrator (4) drives the vibrating plate (3) to vibrate. The homogenizing pipe (2) is provided with a material distribution layer, which includes a plurality of material distribution plates (5). The plurality of material distribution plates (5) are arranged sequentially from the first circumferential side of the homogenizing pipe (2) to the second circumferential side of the homogenizing pipe (2). The two ends of the material distribution plates (5) extend to the third circumferential side and the fourth circumferential side of the homogenizing pipe (2) respectively. The first side and the second side are arranged opposite to each other, and the third side and the fourth side are arranged opposite to each other.

2. A uniform powder delivery device as defined in claim 1, wherein: The material distribution layer is provided in several layers from one end of the inlet of the homogenizing pipe (2) to one end of the outlet of the homogenizing pipe (2), and the material distribution plates (5) of two adjacent material distribution layers are staggered.

3. A uniform powder delivery device as defined in claim 2, wherein: The material distribution plate (5) has a V-shaped or arc-shaped cross section in the third side direction, and one end of the opening of the material distribution plate (5) faces the outlet of the homogenizing pipe (2).

4. A uniform powder delivery device as defined in claim 1, wherein: The top of the vibratory feeder (3) is provided with a material trough (31) and several material channels (32). The material trough (31) is located directly below the outlet of the homogenizing pipe (2), and the several material channels (32) extend from the material trough (31) to the side away from the homogenizing pipe (2).

5. A uniform powder delivery device as defined in claim 4, wherein: The feed channel (32) extends from the feed trough (31) in a tree-like topology to the side away from the homogeneous pipe (2).

6. A uniform powder delivery device as defined in claim 4, wherein: The top of the vibratory feeder (3) is provided with a material distribution plate (33), which is located on the side of the material channel (32) away from the material trough (31).

7. A uniform powder delivery device according to any one of claims 1-6, wherein: A secondary frame is provided on one side of the main frame, and a discharge bin (8) is provided on the secondary frame. The inlet of the discharge bin (8) is located at one end of the discharge port of the vibrating plate (3). The inlet of the discharge bin (8), the discharge port of the discharge bin (8), and the discharge port of the vibrating plate (3) are all in a straight line. The extension directions of the inlet of the discharge bin (8), the discharge port of the discharge bin (8), and the discharge port of the vibrating plate (3) are all the same.

8. A uniform powder delivery device as defined in claim 7, wherein: The auxiliary frame is provided with a metering wheel (6) and a first driving member. The metering wheel (6) is located at the discharge port of the discharge bin (8). The metering wheel (6) is provided with a plurality of metering grooves (61) in a circumferential direction. The metering grooves (61) are in the shape of a straight line. The extension direction of the metering grooves (61) is consistent with the extension direction of the discharge port of the discharge bin (8). The first driving member is used to drive the metering wheel (6) to rotate. A scraper (7) is provided on the sub-frame. The scraper (7) is located on one side of the metering wheel (6) in the circumferential direction. One end of the scraper (7) abuts against the circumferential side of the metering wheel (6).

9. A uniform powder delivery device as defined in claim 8, wherein: The discharging port of the discharging bin (1) is provided with a granulating mechanism (12), and the feeding port of the homogenizing pipeline (2) is connected with the discharging port of the granulating mechanism (12).

10. A uniform powder delivery device as defined in claim 9, wherein: The discharging port of the discharging bin (1) is arranged at the bottom of the discharging bin (1), and the top of the discharging bin (1) is provided with a feeding pipe (13). The homogenizing pipeline (2) is vertically arranged. The vibrating disc (3) is horizontally arranged. The feeding port and the discharging port of the discharging bin (8) are respectively arranged at the top and the bottom of the discharging bin (8).

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