WO2017107234A1

WO2017107234A1 - Powder spraying apparatus

Info

Publication number: WO2017107234A1
Application number: PCT/CN2015/099536
Authority: WO
Inventors: 张祥领
Original assignee: 广东基泰智能设备有限公司
Priority date: 2015-12-25
Filing date: 2015-12-29
Publication date: 2017-06-29
Also published as: CN105600501B; CN105600501A

Abstract

A powder spraying apparatus, comprising a hopper (1), a primary bin (2), a secondary bin (3), and a feed pan (9), wherein a screen (4) is arranged between the hopper (1) and the primary bin (2), the screen (4) is connected to a shaking motor (5), and a first laser sensor (6) for detecting the feed position of the primary bin (2) is arranged above the primary bin (2). An ultrasonic screen (8) is arranged between the primary bin (2) and the secondary bin (3), and a second laser sensor (7) for detecting the feed position of the secondary bin (3) is arranged above the secondary bin (3); the feed pan (9) is disposed below the secondary bin (3), and is connected to an electromagnetic shaker (12) and at least one pressure sensor (11) for use in sensing the quantity of a powder on the feed pan (9); and a system adjusts the operating frequency of the shaker according to a signal from the pressure sensor (11), so as to adjust the quantity of powder retained on the feed pan (9).

Description

Instruction manual Name of the invention: dusting device

Technical field

[0001] The present invention relates to the field of dusters, and more particularly to a dusting device.

Background technique

[0002] In the battery production process, the lithium-receiving process of the lithium-ion battery pole piece is the key technology to improve the capacity of the lithium-ion battery. The lithium-removing process is further divided into a powder-removing lithium process and a film-replenishing lithium process. The difficulty of the process is uniform and equal amount of dusting, otherwise the lithium ion distribution on the pole piece of the battery will be uneven, which will affect the use of the battery.

technical problem

The technical problem to be solved by the present invention is to provide a dusting device capable of accurately dusting in view of the above-mentioned drawbacks in the prior art.

Problem solution

Technical solution

[0004] The technical solution adopted by the present invention to solve the technical problem thereof is:

[0005] A dusting device is provided, including a hopper, a first-stage silo, a second silo, and a tray, and a screen is disposed between the hopper and the first-stage silo, and the screen is connected with vibration a first laser sensor for detecting a material level of the first silo is disposed above the first-stage silo; an ultrasonic screen is disposed between the first-stage silo and the second silo, a second laser sensor for detecting a level of the second silo is disposed above the secondary silo;

[0006] The tray is located below the second silo, and the tray is connected with an electromagnetic oscillator and at least one pressure sensor for sensing the amount of powder on the tray, the second material a vibrator is disposed on the chamber, and the system adjusts an operating frequency of the vibrator according to a signal of the pressure sensor to adjust a quantity of the powder on the tray, and the powder on the tray is in the electromagnetic oscillator Sprinkle under the influence of.

[0007] In the dusting device of the present invention, the bottom of the secondary silo has a discharge port, and the side wall of the secondary silo is provided with an adjustment switch, and the system is based on the pressure sensor. The signal is adjusted by the adjustment switch to the size of the discharge port. [0008] In the dusting device of the present invention, the adjustment switch includes a motor, a gear and a sealing plate, and the motor is fixed on a side wall of the second silo and connected to the gear The gear meshes with a rack on the sealing plate, and the sealing plate is slidably coupled to a sidewall of the secondary silo, and the motor drives the sealing plate to move.

[0009] In the dusting device of the present invention, one end of the tray has a discharge opening, and the discharge opening is provided with a plurality of distribution grooves, and the plurality of distribution grooves are evenly distributed on the material. On the plate.

[0010] In the dusting device of the present invention, the length of the shunt groove is 1/4 to 3/4 of the length of the tray.

[0011] In the dusting device of the present invention, a joint between the first-stage silo and the ultrasonic screen, and a joint between the second silo and the ultrasonic screen are provided with a buffering member .

[0012] In the dusting device of the present invention, the cushioning member is made of a silicone material.

[0013] In the dusting device of the present invention, at least one discharge opening is provided on a side wall of the first-stage silo.

[0014] In the dusting device of the present invention, the primary silo and the secondary silo are funnel shaped.

[0015] In the dusting device of the present invention, the pressure sensor includes a plurality of, and the plurality of pressure sensors are evenly distributed under the tray.

Advantageous effects of the invention

Beneficial effect

[0016] In summary, the dusting device of the present invention has the following beneficial effects: The present application controls the amount of powder entering the first silo from the hopper through the first laser sensor, and the second laser sensor controls the primary material. The amount of powder entering the secondary silo and the pressure sensor control the amount of powder entering the tray from the secondary silo to accurately control the amount of powder on the tray, because the vibration frequency of the electromagnetic oscillator is fixed. The powder on the tray can be moved at a constant speed toward the discharge opening of the tray. The present application achieves a final uniform equal amount of dusting by such multi-point control, equal-control, and constant-speed control.

Brief description of the drawing

DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic structural view of a dusting device according to an embodiment of the present invention;

Figure 2 is a side elevational view of the dusting device of Figure 1;

Figure 3 is an enlarged view of a portion B of the dusting device shown in Figure 2; 4 is an enlarged view of a portion A of the dusting device shown in FIG. 1.

Embodiments of the invention

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0023] As shown in FIG. 1 and FIG. 2, a preferred embodiment of the present invention provides a dusting device for sprinkling powder on a material 100 by multi-point control, equal-control, constant-speed control. , finally achieve a uniform amount of dusting. In this embodiment, the powder is lithium powder, and the material 100 is a battery pole piece that moves at a constant speed. The dusting device of the present application can evenly spread the lithium powder on the battery pole piece, but the application does not limit the powder and the powder. For the specific composition of the material 100, the powder may also be copper powder or the like.

[0024] As shown in FIG. 1, the dusting device includes a frame (not labeled), and the frame is provided with a hopper 1, a first silo 2, a secondary silo 3, and a tray 9. A screen 4 is disposed between the hopper 1 and the first stage silo 2, and a vibrating motor 5 is connected to the screen 4. In actual production, the powder is placed in the hopper 1. When the vibration motor 5 is started, the powder falls through the screen 4 to the first level bin 2. When the vibration motor 5 stops working, the powder in the hopper 1 cannot pass. The screen 4 cannot fall into the first silo 2.

[0025] In order to ensure that the amount of the powder in the first silo 2 is within a certain range, a first laser sensor 6 for detecting the level of the first silo 2 is disposed above the first silo 2, the first laser The sensor 6 is fixed to the frame and is located on one side of the hopper 1. Specifically, the system sets the upper limit position and the lower limit position of the material level of the first level silo 2, when the material level of the first level silo 2 reaches the upper limit position, the first laser sensor 6 sends a signal, and the system instructs the vibration motor 5 to stop working. When the level of the first silo 2 reaches the lower limit, the first laser sensor 6 sends a signal, and the system instructs the vibrating motor 5 to start, thereby ensuring that the amount of the powder in the first silo 2 is in a relatively stable range.

[0026] Further, an ultrasonic screen 8 is disposed between the first silo 2 and the second silo 3, and when the ultrasonic screen 8 is operated, the powder in the first silo 2 can enter the second stage through the screen. In the silo 3, when the ultrasonic screen 8 stops working, the powder in the first silo 2 cannot pass through the screen.

[0027] In order to ensure that the amount of powder in the secondary silo 3 is within a certain range, a second laser sensor 7 for detecting the level of the secondary silo 3 is disposed above the secondary silo 3, the second laser The sensor 7 is fixed to the frame, and Located on one side of the primary silo 2. Specifically, the system sets the upper limit position and the lower limit position of the material level of the second silo 3, and when the material level of the second silo 3 reaches the upper limit value, the second laser sensor 7 sends a signal, and the system commands the ultrasonic screen 8 When the work is stopped, when the level of the secondary silo 3 reaches the lower limit, the system instructs the ultrasonic screen 8 to start, thereby ensuring that the amount of the powder in the secondary silo 3 is in a relatively stable range.

[0028] The electromagnetic vibrator 12 is connected to the tray 9, and the powder on the tray 9 is uniformly dropped from the discharge port 90 at one end of the tray 9 by the electromagnetic oscillator 12. Since the vibration frequency of the electromagnetic oscillator 12 is fixed, the amount of the powder on the tray 9 directly affects the accuracy of dusting. The present application achieves precise control of the amount of powder on the tray 9 by precisely controlling the amount of powder flowing from the secondary bin 3 to the tray 9.

Specifically, the secondary silo 3 is provided with a variable frequency vibrator 10, and the amount of powder entering the tray 9 by the secondary silo 3 can be controlled by changing the vibration frequency of the vibrator 10. The bottom of the tray 9 is provided with at least one pressure sensor 11, and the pressure sensor 11 is used to sense the amount of powder on the tray 9. The system then monitors the change in the value of the pressure sensor 11, and by adjusting the vibration frequency of the vibrator 10, the amount of powder on the tray 9 is accurately controlled. In the present embodiment, the pressure sensor 11 includes four, and the four pressure sensors 11 are evenly distributed at the bottom of the tray 9, but the embodiment does not limit the specific number of the pressure sensors 11.

[0030] Since the vibration frequency of the electromagnetic oscillator 12 is fixed, when the amount of powder on the tray 9 is constant, the moving speed of the powder in the tray 9 is fixed. The present application finally achieves uniform equal amount of dusting by multi-point control, equal-quantity control and constant-speed control of the first laser sensor 6, the second laser sensor 7, and the pressure sensor 11.

[0031] As shown in FIG. 2 and FIG. 3, a plurality of diverting grooves 91 are uniformly disposed on a side of the tray 9 near the discharge opening 90, and a plurality of diverting grooves 91 are distributed along the discharge direction of the powder to better. Spread the powder evenly. In the present embodiment, the length of the splitter groove 91 is 1/4 to 3/4 of the length of the tray 9. Preferably, the length of the splitter groove 91 is 2/3 of the length of the tray 9.

[0032] Since the material level difference of the second silo 3 is higher than the material level difference of the first silo 2, the starting and stopping frequency of the screen is also high, so the screen of the second silo 3 cannot use the motor. In order to prevent the vibration of the first silo 2 from affecting the secondary silo 3, the connection between the primary silo 2 and the ultrasonic screen 8, and the connection between the secondary silo 3 and the ultrasonic screen 8 are provided with a buffering member 13, The vibration between the primary silo 2 and the secondary silo 3 does not interfere with each other and does not affect each other. Buffer member 1 3 can be a soft material such as silica gel

[0033] In order to facilitate the falling of the powder in the primary silo 2 and the secondary silo 3, both the primary silo 2 and the secondary silo 3 are leaky. Bucket. A discharge port 20 is disposed on a side wall of the bottom end of the first-stage silo 2, and a connection plug (not labeled) is connected to the discharge port 20. When the first laser sensor 6 is abnormal, and the level of the first silo 2 is too high, the excess powder can be discharged from the discharge port 20 to achieve the purpose of accurate dusting. As shown in Fig. 2, the discharge port 20 includes two, but the embodiment does not limit the number of the discharge ports 20.

As shown in FIG. 4, the bottom of the secondary silo 3 has a discharge port 30, and an adjustment gate 31 is connected to the side wall of the secondary silo 3. The adjustment switch 31 includes a motor 32, a motor bracket 33, a gear 34 and a sealing plate 35. The motor bracket 33 is fixed on the side wall of the second silo 3, and the motor 32 is fixed on the motor bracket 33 and is connected to the gear 34, the gear 34 is engaged with the rack (not labeled) on the sealing plate 35, and the sealing plate 35 is slidably coupled to the side wall of the secondary silo 3, so that the rotation of the motor 32 causes the sealing plate 35 to slide up and down. When the sealing plate 35 is moved downward, the sealing plate 35 gradually blocks the discharge opening 30, so that the discharge amount of the discharge opening 30 becomes small; when the sealing plate 35 moves upward, the discharge amount of the discharge opening 30 becomes large. In this embodiment, a sliding groove (not shown) is disposed on the side wall of the secondary silo 3, and the sealing plate 35 is slidably coupled in the sliding groove.

[0035] The adjustment switch 31 cooperates with the pressure sensor 11 to precisely control the flow rate of the powder. Specifically, when the amount of powder on the tray 9 is reduced, the system issues a command according to the signal from the pressure sensor 11, causing the motor 32 to rotate forward (or reverse), thereby increasing the discharge port 30. When the amount of powder on the tray 9 is excessive, the system issues a command according to the signal from the pressure sensor 11, causing the motor 32 to reverse (or forward), thereby reducing the discharge port 30.

[0036] In summary, the dusting device of the present invention has the following beneficial effects: The present application controls the amount of powder entering the first silo from the hopper through the first laser sensor, and the second laser sensor controls the primary material. The amount of powder entering the secondary silo and the pressure sensor control the amount of powder entering the tray from the secondary silo to accurately control the amount of powder on the tray, because the vibration frequency of the electromagnetic oscillator is fixed. The powder on the tray can be moved at a constant speed toward the discharge opening of the tray. The present application achieves a final uniform equal amount of dusting by such multi-point control, equal-control, and constant-speed control.

[0037] While the invention has been described by the embodiments of the invention, it will be understood that In addition, various modifications may be made to the invention without departing from the scope of the invention. Therefore, the invention is not limited to the specific embodiments disclosed, but all embodiments that fall within the scope of the appended claims.

Claims

Claim

[Claim 1] A dusting device, comprising: a hopper (1), a primary silo (2), a secondary silo (3), and a tray (9), the hopper (1) and A screen (4) is disposed between the first-stage silos (2), and a vibration motor (5) is connected to the screen (4), and the top of the first-stage silo (2) is provided for detecting a first laser sensor (6) of a level of the first silo (2); an ultrasonic screen (8) between the primary silo (2) and the secondary silo (3) a second laser sensor (7) for detecting the level of the secondary silo (3) is disposed above the secondary silo (3); the tray (9) is located at the secondary material Below the silo (3), the tray (9) is connected with an electromagnetic oscillator (12) and at least one pressure sensor (11) for sensing the amount of powder on the tray (9), the second a grader (3) is provided with a vibrator (10), and the system adjusts an operating frequency of the vibrator (10) according to a signal of the pressure sensor (11) to adjust the The disc (9) to maintain the amount of material powder, the trays (9) on the feed powder scattered under the action of the electromagnetic oscillator (12).

[Claim 2] The dusting device according to claim 1, characterized in that the bottom of the secondary silo (3) has a discharge opening (30), the side of the secondary silo (3) An adjustment switch (31) is provided on the wall, and the system adjusts the size of the discharge port (30) by using the adjustment switch (31) according to the signal of the pressure sensor (11).

[Claim 3] The dusting device according to claim 2, wherein the adjustment switch (31) comprises a motor (32), a gear (34) and a sealing plate (35), the motor (31) Fixing on the side wall of the secondary silo (3) and drivingly connected to the gear (34), the gear (34) meshing with the rack on the sealing plate (35) The sealing plate (35) is slidably coupled to the side wall of the secondary silo (3), and the motor (32) drives the sealing plate (35) to move.

[Claim 4] The dusting device according to claim 1, wherein one end of the tray (9) has a discharge opening (90), and the discharge opening (90) is provided with a plurality of A splitter groove (91), the plurality of splitter grooves (91) are evenly distributed on the tray (9).

[Claim 5] The dusting device according to claim 4, wherein the shunting groove (91) The length is 1/4 to 3/4 of the length of the tray (9).

[Claim 6] The dusting device according to claim 1, wherein a connection between the primary silo (2) and the ultrasonic screen (8), and the secondary silo ( 3) A buffer member (13) is provided at the junction with the ultrasonic screen (8).

[Claim 7] The dusting device according to claim 6, wherein the cushioning member (13) is made of a silicone material.

[Claim 8] The dusting device according to claim 1, characterized in that at least one discharge opening (20) is provided on a side wall of the primary silo (2).

[Claim 9] The dusting device according to claim 1, characterized in that the primary silo (2) and the secondary silo (3) are funnel-shaped.

[Claim 10] The dusting device according to claim 1, wherein the pressure sensor (11)

The plurality of pressure sensors (11) are evenly distributed under the tray (9).