Rotary powder discharging device

Abstract

The utility model provides a powder rotary discharging device. The powder rotary discharging device comprises a valve body, a driving assembly, a discharging control assembly and a lining layer, the discharging control assembly comprises a rotating shaft and a roller, one end of the rotating shaft is connected to the output end of the driving assembly, the other end of the rotating shaft is connected to the roller, the roller is located in a material passing channel and provided with a material storage groove, and the material storage groove communicates with the material passing channel; and the storage tank is spirally arranged in the circumferential direction of the roller. Powder enters the valve body through the feeding port, then enters the material passing channel and fills the material storage groove, under driving of the driving assembly, the rotating shaft drives the roller to rotate, the powder in the material storage groove leaves the valve body from the discharging port, and the lining layer covers the inner wall of the valve body. According to the rotary discharging device for the powder, the device can control uniform discharging of the powder through the spirally arranged storage tank, the inner wall of the valve body is covered with the lining layer, the lining layer can protect the valve body and prevent the powder from abrading the valve body, and therefore the service life of the rotary discharging device for the powder is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of production of positive electrode materials for lithium batteries, and in particular to a powder rotary discharging device. Background Art

[0002] Star-shaped rotary valves are widely used in the production process of positive electrode materials for lithium-ion batteries due to their large production capacity, cheap equipment and easy operation. During the production process, the star-shaped rotary valve can control the continuous discharge of positive electrode material powder. The material passage of the star-shaped rotary valve is provided with blades. When the star-shaped rotary valve is working, the powder enters the material passage inside the star-shaped rotary valve from the feed port above, and the powder fills the space between the blades. The blades rotate under the driving action of the motor, and the blades continuously transport the powder from the feed port to the discharge port, so that the powder continuously enters the next equipment from the feed port.

[0003] In the pulverizing process of positive electrode material production, it is necessary to control the powder to enter the pulverizing equipment evenly to ensure the consistency of various indicators of the pulverized material. When the star-shaped rotary valve is unloading, the blades rotate synchronously, and the powder fills the gaps between adjacent blades. Due to the different amounts of powder filling the gaps between adjacent blades, the star-shaped rotary valve unloads unevenly, and the powder enters the pulverizing equipment unevenly.

[0004] For example, the Chinese patent application number CN202120452639.9 discloses a discharge valve for the production of positive electrode materials for lithium batteries, including a valve body, an end cover, a valve core and a rotary drive mechanism. The valve body has a vertical discharge channel, and an installation opening that penetrates the vertical discharge channel is opened on one of the opposite side walls of the valve body. Two end covers are provided, and are respectively sealed and assembled on the two installation openings of the valve body. The valve core is arranged in the vertical discharge channel of the valve body and can be rotatably assembled to the end cover through a rotating shaft. The rotary drive mechanism is arranged on the outside of the valve body and drives the connecting rotating shaft. The material of the valve body, the end cover and the valve core are all MC nylon, and there is a gap between the valve body and the valve core, and the gap range is 0.3mm-3mm. MC nylon is a non-metallic material with high-strength wear resistance. It is not easy to wear and produce particles to cause material pollution. The above scheme proposes to connect the discharge valve to the upper output equipment, and the material falls from the upper end opening of the vertical discharge channel. The valve core is rotated to open or close the vertical discharge channel, thereby controlling the flow or cutoff of the material. Since the discharge amount of powder from the discharge channel cannot be controlled, the powder discharge is uneven. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a powder rotary discharging device that can discharge powder evenly and disperse powder.

[0006] The purpose of this disclosure is achieved through the following technical solutions:

[0007] A powder rotary discharging device, comprising a valve body, a driving component, a discharging control component and an inner lining layer, wherein the valve body is provided with a feed port, a feed passage and a discharge port, wherein the feed port, the feed passage and the discharge port are connected in sequence, and a first through hole and a second through hole are respectively provided on both sides of the valve body, wherein the first through hole and the second through hole are respectively connected to the feed passage;

[0008] The material unloading control component includes a rotating shaft and a roller, one end of the rotating shaft is connected to the output end of the driving component, the other end of the rotating shaft is sequentially penetrated through the first through hole, the material passing channel and the second through hole, the roller is connected to the rotating shaft, the roller is located in the material passing channel, the roller is provided with a rotating channel, the rotating shaft is penetrated through the rotating channel, the roller is provided with a material storage trough, the material storage trough is connected to the material passing channel, and the material storage trough is arranged along the circumferential spiral of the roller;

[0009] The lining layer covers the inner wall of the valve body, and the lining layer is located in the material transfer channel.

[0010] In one embodiment, there are multiple material storage troughs, and the multiple material storage troughs are spaced apart from each other on the roller.

[0011] In one of the embodiments, the material unloading control assembly further includes a baffle, which is disposed on the material storage trough, and the baffle separates the material storage trough into a first filling trough and a second filling trough.

[0012] In one embodiment, there are multiple baffles, and multiple baffles are spaced apart in each of the material storage troughs.

[0013] In one embodiment, the material unloading control component also includes a dovetail connector, the rotating shaft is provided with a dovetail groove, the dovetail connector is connected to the roller, the dovetail connector is arranged in the rotating channel, and the dovetail connector is installed in the dovetail groove.

[0014] In one embodiment, there are a plurality of dovetail connectors, and the plurality of dovetail connectors are arranged at intervals along the circumference of the rotating channel, and the plurality of dovetail grooves are arranged at intervals along the circumference of the rotating shaft.

[0015] In one embodiment, the powder rotary discharging device also includes a first sealing component and a second sealing component, the first sealing component is installed in the first through hole, the first sealing component is sleeved on the rotating shaft, the second sealing component is installed in the second through hole, and the second sealing component is sleeved on the rotating shaft.

[0016] In one of the embodiments, the powder rotary discharging device further includes a first pipe connector and a second pipe connector, wherein the first pipe connector is installed at the feed port, and the second pipe connector is installed at the discharge port.

[0017] In one of the embodiments, a weight reduction cavity is provided in the roller.

[0018] In one embodiment, there are multiple weight-reducing cavities, and the multiple weight-reducing cavities are arranged at intervals along the circumference of the rotating shaft.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] 1. In the above-mentioned powder rotary discharging device, when the powder is discharged, the roller is arranged in the feeding channel, and the roller is provided with a storage trough which is spirally arranged along the circumference of the roller. The powder enters the valve body from the feed port and then enters the feeding channel and contacts the roller. The powder is filled in the storage trough. After the roller rotates, the powder in the storage trough moves to the bottom of the roller, and the powder falls evenly into the discharging port, so that the powder is discharged evenly, so that the powder enters the crushing equipment evenly, so as to ensure the consistency of various indicators of the material after crushing.

[0021] 2. When the roller rotates, the powder is filled in the storage tank, and the large pieces of powder are squeezed and dispersed between the roller and the lining layer, making the powder more uniform. The lining layer covers the inner wall of the valve body, so that the lining layer can protect the valve body and prevent the powder from wearing the valve body, thereby increasing the service life of the powder rotary discharging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic structural diagram of a powder rotary discharging device according to an embodiment;

[0024] Figure 2 for Figure 1 Another structural schematic diagram of the powder rotary discharging device shown;

[0025] Figure 3 for Figure 2 The cross-sectional view of the powder rotary discharging device along line AA is shown.

[0026] Figure markings: 10-powder rotary discharging device; 100-valve body; 200-drive assembly; 300-discharging control assembly; 400-lining layer; 101-feeding port; 102-feeding channel; 103-discharging port; 105-first through hole; 106-second through hole; 310-rotating shaft; 320-roller; 3201-rotating channel; 3202-storage trough; 330-baffle; 3203-first filling trough; 3204-second filling trough; 340-dovetail connector; 3101-dovetail groove; 500-first sealing assembly; 600-second sealing assembly; 700-first pipe connector; 800-second pipe connector; 3205-weight reduction chamber. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0031] like Figure 1 and Figure 2As shown, a powder rotary discharging device 10 of an embodiment includes a valve body 100, a driving component 200, a material discharge control component 300 and an inner lining layer 400. The valve body 100 is provided with a feed port 101, a material transfer channel 102 and a material discharge port 103. The feed port 101, the material transfer channel 102 and the material discharge port 103 are connected in sequence. A first through hole 105 and a second through hole 106 are also respectively provided on both sides of the valve body 100. The first through hole 105 is located on a side of the valve body 100 close to the driving component 200, and the second through hole 106 is located on the other side of the valve body 100 away from the driving component 200. The first through hole 105 and the second through hole 106 are respectively connected to the material transfer channel 102.

[0032] Furthermore, the material unloading control component 300 includes a rotating shaft 310 and a roller 320. One end of the rotating shaft 310 is connected to the output end of the driving component 200, and the other end of the rotating shaft 310 is sequentially penetrated through the first through hole 105, the material passage 102 and the second through hole 106. The roller 320 is connected to the rotating shaft 310 so that when the rotating shaft 310 is driven to rotate by the driving component 200, the rotating shaft 310 can drive the roller 320 to rotate. The roller 320 is located in the material passage 102. The roller 320 A rotating channel 3201 is provided, the rotating shaft 310 is passed through the rotating channel 3201, the roller 320 is provided with a storage trough 3202, the storage trough 3202 is connected to the material passing channel 102, the storage trough 3202 is arranged along the circumferential spiral of the roller 320, the storage trough 3202 is used to store powder, and by designing the storage trough 3202 to be a structure arranged along the circumferential thread of the roller 320, the powder can be controlled to evenly enter and leave the storage trough 3202, thereby achieving the effect of evenly discharging the powder. Furthermore, the lining layer 400 covers the inner wall of the valve body 100, and the lining layer 400 is located in the feed channel 3201. The lining layer 400 is sprayed with ceramic material, and the roller 320 is cast with nylon material, so that the material of the lining layer 400 is harder and the material of the roller 320 is softer. Through the design of the lining layer 400 and the roller 320, one soft and one hard, the particle breakage caused by the increase of internal stress after the larger particles in the powder are squeezed is avoided, and the long-term friction between the powder and the inner wall of the valve body 100 is reduced, so that the wear of the inner wall of the valve body 100 introduces magnetic foreign matter.

[0033] In this embodiment, the roller 320 is arranged in the feed channel 102, and the roller 320 is provided with a storage trough 3202 which is spirally arranged along the circumference of the roller 320. When the powder is discharged, the powder enters the feed channel 102 from the feed port 101, and the powder is filled in the storage trough 3202. The driving component 200 drives the rotating shaft 310 to rotate, and the rotating shaft 310 drives the roller 320 to rotate, so that the powder in the storage trough 3202 rotates to the bottom of the roller 320, and the powder falls from the storage trough 3202 into the discharge port 103, and the powder enters the crushing equipment of the next process from the discharge port 103. When the roller 320 rotates, large pieces of powder fall on the surface of the roller 320, and the roller 320 and the inner lining 101 continuously squeeze the powder, and the powder, the roller 320 and the inner lining 101 are continuously ground, so that the large pieces of powder are dispersed into powder with smaller particle size, and the powder is dispersed more evenly, so that the dispersed powder falls from the storage tank 3202, and the dispersed powder smoothly enters the crushing equipment of the next process from the discharge port 103 for crushing.

[0034] In the above-mentioned powder rotary discharging device 10, when the powder is discharged, the roller 320 is arranged in the feeding channel 102, and the roller 320 is provided with a storage groove 3202 which is spirally arranged along the circumference of the roller 320. After the powder enters the valve body 100 from the feed port 101, it enters the feeding channel 102 and contacts the roller 320. The powder is filled in the storage groove 3202. After the roller 320 rotates, the powder in the storage groove 3202 moves to the bottom of the roller 320, and the powder falls into the discharge port 103 evenly, so that the powder is discharged evenly, so that the powder enters the crushing equipment evenly, so as to ensure the consistency of various indicators of the material after crushing. When the roller 320 rotates, the powder is filled in the storage trough 3202, and the large pieces of powder are squeezed and dispersed between the roller 320 and the lining layer 400, making the powder more uniform. The lining layer 400 covers the inner wall of the valve body 100, so that the lining layer 400 can protect the valve body 100 and prevent the powder from wearing the valve body 100, thereby increasing the service life of the powder rotary discharging device 10.

[0035] like Figure 1 and Figure 2 As shown, in one embodiment, the number of the storage troughs 3202 is multiple, and the multiple storage troughs 3202 are arranged at intervals on the roller 320. In this embodiment, when the powder is discharged, by arranging multiple storage troughs 3202 on the surface of the roller 320, the amount of powder filled in the storage troughs 3202 is larger, and the amount of powder reaching the bottom of the feeding channel 102 after one rotation of the roller 320 is larger, thereby accelerating the discharge speed of the powder, and further improving the discharge efficiency of the powder rotary discharge device 10.

[0036] like Figure 1 and Figure 2As shown, in one embodiment, the material unloading control assembly 300 further includes a baffle 330, which is disposed on the material storage tank 3202, and the baffle 330 separates the material storage tank 3202 into a first filling tank 3203 and a second filling tank 3204. In this embodiment, when the powder fills the material storage tank 3202, due to the good fluidity of the powder, the powder is easy to leak from the material storage tank 3202 and directly enter the discharge port 103. The baffle 330 can separate the material storage tank 3202 into the first filling tank 3203 and the second filling tank 3204, and the baffle 330 blocks the powder from flowing, thereby preventing the powder from entering the discharge port 103 from between the material passages 102.

[0037] In one embodiment, there are multiple baffles 330, and multiple baffles 330 are spaced apart in each storage tank 3202. In this embodiment, when the powder fills the storage tank 3202, the multiple baffles 330 divide each storage tank 3202 into multiple filling tanks with smaller spaces, further controlling the powder to enter each filling tank evenly, so that the filling rate of the powder in each filling tank is similar, so that the powder is discharged from the powder rotary discharging device 10 more evenly.

[0038] like Figure 2 and Figure 3 As shown, in one embodiment, the material unloading control assembly 300 further includes a dovetail connector 340, the rotating shaft 310 is provided with a dovetail groove 3101, the dovetail connector 340 is connected to the roller 320, the dovetail connector 340 is arranged in the rotating channel 3201, and the dovetail connector 340 is installed in the dovetail groove 3101. In this embodiment, the roller 320 and the rotating shaft 310 are connected by the dovetail connector 340 with a mortise and tenon structure, so as to improve the connection strength between the roller 320 and the rotating shaft 310, and the dovetail connector 340 cooperates with the dovetail groove 3101 to install the roller 320 and the rotating shaft 310, so as to facilitate the operator to repair and replace the roller 320.

[0039] like Figure 3 As shown, in one embodiment, there are multiple dovetail connectors 340, and the multiple dovetail connectors 340 are arranged at intervals along the circumference of the rotating channel 3201, and the multiple dovetail grooves 3101 are arranged at intervals along the circumference of the rotating shaft 310. In this embodiment, each dovetail connector 340 is arranged in the corresponding dovetail groove 3101, so that the rotating shaft 310 and the roller 320 are evenly stressed, and the connection strength between the rotating shaft 310 and the roller 320 is improved, thereby extending the service life of the rotating shaft 310 and the roller 320.

[0040] like Figure 1As shown, in one embodiment, the powder rotary discharging device 10 further includes a first sealing component 500 and a second sealing component 600, the first sealing component 500 is installed in the first through hole 105, the first sealing component 500 is sleeved on the rotating shaft 310, the second sealing component 600 is installed in the second through hole 106, and the second sealing component 600 is sleeved on the rotating shaft 310. In this embodiment, the first sealing component 500 and the second sealing component 600 are both sealed bearing structures. The first sealing component 500 and the second sealing component 600 are sleeved on the rotating shaft 310, so that the rotating shaft 310 can rotate relative to the valve body 100, and the first sealing component 500 and the second sealing component 600 seal the gap between the valve body 100 and the rotating shaft 310, thereby preventing the valve body 100 from leaking in the first through hole 105 and the second through hole 106.

[0041] like Figure 1 As shown, in one embodiment, the powder rotary discharging device 10 further includes a first pipe connector 700 and a second pipe connector 800, the first pipe connector 700 is installed at the feed port 101, and the second pipe connector 800 is installed at the discharge port 103. In this embodiment, the feed port 101 and the discharge port 103 are both made of stainless steel, so that the durability of the first pipe connector 700 and the second pipe connector 800 is improved; the first pipe connector 700 and the second pipe connector 800 are respectively connected to the powder conveying pipeline, the first pipe connector 700 is connected to the feed port conveying pipeline of the valve body 100, and the second pipe connector 800 is connected to the discharge port of the valve body 100, so that the powder is not easy to leak through the feed port and the discharge port.

[0042] like Figure 3 As shown, in one embodiment, a weight-reducing cavity 3205 is provided in the roller 320. In this embodiment, the weight-reducing cavity 3205 makes the roller 320 hollow inside, reduces the weight of the roller 320, facilitates the operator to inspect and replace the roller 320, avoids the risk of being injured during operation, and thus improves safety.

[0043] like Figure 3 As shown, in one embodiment, the number of the weight-reducing chambers 3205 is multiple, and the multiple weight-reducing chambers 3205 are arranged at intervals along the circumference of the rotating shaft 310. In this embodiment, the multiple weight-reducing chambers 3205 are arranged at intervals along the circumference of the rotating shaft 310, so that the mass of the roller 320 is evenly distributed, so that the overall mass of the roller 320 is reduced under the premise of sufficient anti-torque force, and it is further convenient for operators to replace the roller 320.

[0044] Compared with the prior art, the present invention has at least the following advantages:

[0045] 1. In the above-mentioned powder rotary discharging device 10, when the powder is discharged, the roller 320 is arranged in the feeding channel 102, and the roller 320 is provided with a storage groove 3202 which is spirally arranged along the circumference of the roller 320. After the powder enters the valve body 100 from the feed port 101, it enters the feeding channel 102 and contacts the roller 320. The powder is filled in the storage groove 3202. After the roller 320 rotates, the powder in the storage groove 3202 moves to the bottom of the roller 320, and the powder falls into the discharge port 103 evenly, so that the powder is discharged evenly, so that the powder enters the pulverizing equipment evenly, so as to ensure the consistency of various indicators of the material after pulverization.

[0046] 2. When the roller 320 rotates, the powder is filled in the storage tank 3202, and the large pieces of powder are squeezed and dispersed between the roller 320 and the lining layer 400, making the powder more uniform. The lining layer 400 covers the inner wall of the valve body 100, so that the lining layer 400 can protect the valve body 100 and prevent the powder from wearing the valve body 100, thereby increasing the service life of the powder rotary discharging device 10.

[0047] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A powder rotary discharging device, characterized in that: It comprises a valve body (100), a driving assembly (200), a material discharge control assembly (300) and an inner lining layer (400). The valve body (100) is provided with a feed inlet (101), a feed passage (102) and a discharge port (103), wherein the feed inlet (101), the feed passage (102) and the discharge port (103) are sequentially connected, and a first through hole (104) and a second through hole (105) are respectively provided on both sides of the valve body (100), wherein the first through hole (104) and the second through hole (105) are respectively connected to the feed passage (102); The material unloading control component (300) comprises a rotating shaft (310) and a roller (320), one end of the rotating shaft (310) is connected to the output end of the driving component (200), the other end of the rotating shaft (310) is sequentially penetrated through the first through hole (104), the material passing channel (102) and the second through hole (105), the roller (320) is connected to the rotating shaft (310), the roller (320) is located in the material passing channel (102), the roller (320) is provided with a rotating channel (3201), the rotating shaft (310) is penetrated through the rotating channel (3201), the roller (320) is provided with a material storage trough (3202), the material storage trough (3202) is connected to the material passing channel (102), and the material storage trough (3202) is arranged along the circumferential spiral of the roller (320); The lining layer (400) covers the inner wall of the valve body (100), and the lining layer (400) is located in the material transfer channel (102).

2. The powder rotary discharging device according to claim 1, characterized in that: There are multiple material storage troughs (3202), and the multiple material storage troughs (3202) are arranged at intervals on the roller (320).

3. The powder rotary discharging device according to claim 1, characterized in that: The material unloading control assembly (300) further includes a baffle (330), wherein the baffle (330) is disposed on the material storage trough (3202), and the baffle (330) separates the material storage trough (3202) into a first filling trough (3203) and a second filling trough (3204).

4. The powder rotary discharging device according to claim 3, characterized in that: There are multiple baffles (330), and multiple baffles (330) are arranged at intervals in each of the material storage troughs (3202).

5. The powder rotary discharging device according to claim 1, characterized in that: The material discharge control component (300) also includes a dovetail connector (340), the rotating shaft (310) is provided with a dovetail groove (3101), the dovetail connector (340) is connected to the roller (320), the dovetail connector (340) is arranged in the rotating channel (3201), and the dovetail connector (340) is installed in the dovetail groove (3101).

6. The powder rotary discharging device according to claim 5, characterized in that: There are a plurality of dovetail connectors (340), and the plurality of dovetail connectors (340) are arranged at intervals along the circumference of the rotating channel (3201), and a plurality of dovetail grooves (3101) are arranged at intervals along the circumference of the rotating shaft (310).

7. The powder rotary discharging device according to claim 1, characterized in that: The powder rotary discharging device also includes a first sealing component (500) and a second sealing component (600), wherein the first sealing component (500) is installed in the first through hole (104), and the first sealing component (500) is sleeved on the rotating shaft (310), and the second sealing component (600) is installed in the second through hole (105), and the second sealing component (600) is sleeved on the rotating shaft (310).

8. The powder rotary discharging device according to claim 1, characterized in that: The powder rotary discharging device further comprises a first pipe connecting piece (700) and a second pipe connecting piece (800), wherein the first pipe connecting piece (700) is installed at the feed port (101), and the second pipe connecting piece (800) is installed at the discharge port (103).

9. The powder rotary discharging device according to claim 1, characterized in that: A weight reduction chamber (3205) is provided in the roller (320).

10. The powder rotary discharging device according to claim 9, characterized in that: The number of the weight-reducing cavities (3205) is multiple, and the multiple weight-reducing cavities (3205) are arranged at intervals along the circumference of the rotating shaft (310).

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