Metering device

Abstract

The utility model relates to the technical field of lithium battery positive electrode materials, and discloses a metering device, which is used for being supported on a to-be-supported object and comprises a stock bin, a metering device, a metering device, a metering device and a control device. The bottom of the stock bin is provided with a discharge port, and the side wall of the stock bin is provided with at least one air inlet; the connecting piece is provided with a first hollow cavity, and one end of the connecting piece extends into the stock bin; the air storage part is provided with an air outlet, the air outlet is connected to the other end of the connecting part, compressed air is stored in the air storage part, and the air storage part is used for introducing the compressed air into the stock bin through the connecting part so as to scatter materials in the stock bin. The air inlet is formed in the side wall of the stock bin and connected with the air storage piece through the connecting piece, so that when materials are accumulated above the stock bin and cannot be continuously discharged, compressed air can be introduced into the stock bin to scatter the materials, the discharging is smoother, the discharging efficiency is improved, and the side wall of the stock bin is not damaged; the connecting piece and the gas storage piece are arranged on the outer side of the stock bin, and installation and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery positive electrode materials, in particular to a metering device. Background Art

[0002] When preparing the materials needed for lithium battery positive electrode materials, it is necessary to obtain the required weight of lithium hydroxide according to the proportions. When measuring and extracting lithium hydroxide powder, a metering silo with a discharge port at the bottom is usually used. Specifically, the side walls of the silo are supported on a set of spaced weighing platforms. The discharge port is first closed, and lithium hydroxide powder is added to the silo. The value of the weighing platform at this time is recorded; then the discharge port is opened and the lithium hydroxide powder is discharged into the mixing device until the difference between the value of the weighing platform and the previous value is equal to the weight of the required lithium hydroxide powder, and the discharge port is closed. Due to the low density and poor fluidity of lithium hydroxide powder, the lithium hydroxide powder will form bridges in the silo during the discharge process, that is, it will accumulate above the silo, preventing further discharge. A common practice is to manually hit the side wall of the silo with a wooden hammer to break up the accumulated lithium hydroxide powder, so that discharge can continue. However, long-term hitting the silo will cause the side wall of the silo to deform and reduce discharge efficiency. Utility Model Content

[0003] In view of this, the utility model provides a metering device to solve the problem that lithium hydroxide powder will form bridges in the silo during the discharging process. If the side wall of the silo is hit with a wooden hammer for a long time to continue discharging, the side wall of the silo will be deformed and the discharging efficiency will be low.

[0004] The utility model provides a metering device for supporting an object to be supported, comprising:

[0005] A silo having a discharge port at the bottom and at least one air inlet on the side wall of the silo;

[0006] A connecting piece is provided with a first hollow cavity, and one end of the connecting piece extends into the silo;

[0007] The gas storage member is provided with an air outlet, which is connected to the other end of the connecting member. Compressed gas is stored in the gas storage member and is used to pass the compressed gas into the silo through the connecting member to disperse the material in the silo.

[0008] Beneficial effect: By arranging an air inlet on the side wall of the silo and connecting it to the air storage part through a connector, when the material accumulates on the top of the silo and cannot be discharged, compressed gas can be introduced into the silo to break up the material, making the discharge smoother and improving the discharge efficiency without causing damage to the side wall of the silo; the connector and the air storage part are both arranged on the outside of the silo, which is convenient for installation and maintenance.

[0009] In an optional embodiment, the connecting piece is detachably connected to the silo.

[0010] Beneficial effect: By detachably connecting the connecting piece to the silo, the installation and disassembly of the connecting piece and the gas storage piece are facilitated.

[0011] In an optional embodiment, a sealing member is provided between the connecting member and the air inlet.

[0012] Beneficial effect: By setting the seal, it is possible to prevent a gap from forming between the air inlet of the silo and the connector, preventing the material from being discharged out of the silo through the gap, causing inaccurate metering results and powder leakage.

[0013] In an optional embodiment, the sealing element is a polytetrafluoroethylene gasket.

[0014] In an optional embodiment, a fixing member is fixedly connected to the inner side wall of the air inlet, the fixing member is provided with a second hollow cavity, and the connecting member is passed through the second hollow cavity.

[0015] Beneficial effect: By providing the fixing piece, the contact area between the connecting piece and the air inlet can be increased, preventing the connecting piece from moving or even falling under a large pressure.

[0016] In an optional embodiment, the end of the connecting member extending into the silo is honeycomb-shaped.

[0017] Beneficial effect: By setting the end of the connecting piece extending into the silo into a honeycomb shape, it is possible to prevent the material from entering the first hollow cavity through the opening at the end of the connecting piece and then entering the gas storage piece, causing a dust explosion.

[0018] In an optional embodiment, a control component is provided between the connecting component and the gas storage component.

[0019] Beneficial effect: By setting up a control part, compressed gas can be introduced into the silo as needed to save costs.

[0020] In an optional embodiment, the gas storage member is provided with a gas supply port for providing the compressed gas into the gas storage member.

[0021] In an optional embodiment, the air supply port is connected to a filter element for filtering impurities in the compressed gas.

[0022] Beneficial effect: By providing a filter, impurities can be prevented from entering the silo along with the compressed gas, contaminating the material and reducing product quality.

[0023] In an optional embodiment, the object to be supported is provided with a groove, and at least two measuring pieces are provided at the end of the object to be supported near the groove, and the side wall of the silo is provided with a support piece corresponding to the measuring piece, and the support piece is fixed on the measuring piece for measuring the weight of the material.

[0024] Beneficial effects: By fixing the side wall of the silo on the object to be supported for measurement, measurement can be performed while discharging, which can improve the discharging efficiency, and can obtain real-time data of the discharging, making the discharging more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic structural diagram of a metering device according to an embodiment of the present utility model;

[0027] Figure 2 for Figure 1 A partial enlarged schematic diagram;

[0028] Figure 3 for Figure 1 A partial enlarged schematic diagram of B in the middle;

[0029] Figure 4 for Figure 1 A side view of the connecting piece of the metering device is shown.

[0030] Description of reference numerals:

[0031] 1. Object to be supported; 11. Measuring element; 2. Material silo; 21. Discharge port; 22. Air inlet; 23. Support element; 3. Connecting element; 4. Air storage element; 41. Air outlet; 42. Air supply port; 5. Sealing element; 6. Control element; 7. Filter element. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0033] The following combination Figures 1 to 4 , describing the embodiments of the present utility model.

[0034] According to an embodiment of the present utility model, a metering device is provided for supporting an object 1 to be supported, comprising: a silo 2, a bottom of which is provided with a discharge port 21, and a side wall of the silo 2 is provided with at least one air inlet 22; a connecting piece 3, which is provided with a first hollow cavity, and one end of the connecting piece 3 extends into the silo 2; an air storage piece 4, which is provided with an air outlet 41, and the air outlet 41 is connected to the other end of the connecting piece 3. Compressed gas is stored in the air storage piece 4, which is used to introduce compressed gas into the silo 2 through the connecting piece 3 to break up the material in the silo 2.

[0035] By arranging an air inlet 22 on the side wall of the silo 2 and connecting it to the air storage part 4 through the connecting part 3, when the material accumulates above the silo 2 and cannot be discharged, compressed gas can be introduced into the silo 2 to break up the material, making the discharge smoother, improving the discharge efficiency, and not causing damage to the side wall of the silo 2; the connecting part 3 and the air storage part 4 are both arranged on the outside of the silo 2, which is convenient for installation and maintenance.

[0036] The material is lithium hydroxide powder, and the compressed gas is compressed air. As an alternative embodiment, the material may also be a powder material such as lithium carbonate, without further limitation. As an alternative embodiment, the compressed gas may also be compressed nitrogen or compressed helium, without further limitation.

[0037] In one embodiment, the side wall of the silo 2 is provided with an air inlet 22, and the connecting member 3 and the air storage member 4 each have one air inlet. As an alternative embodiment, the side wall of the silo 2 may also be provided with two or three air inlets 22, and the connecting member 3 and the air storage member 4 each have two or three air inlets, without further limitation.

[0038] like Figure 1 、 Figure 3 As shown, in one embodiment, the object to be supported 1 is provided with a groove, and two measuring pieces 11 are provided at the end of the object to be supported 1 close to the groove, and the side wall of the silo 2 is provided with a support piece 23 corresponding to the measuring piece 11, and the support piece 23 is fixed on the measuring piece 11, and is used to measure the weight of the lithium hydroxide powder. Specifically, the main body of the silo 2 extends into the groove, and the support pieces 23 of the side wall are fixed on the measuring pieces 11 on both sides. By fixing the side wall of the silo 2 to the object to be supported 1 for measurement, measurement can be performed while discharging, the discharging efficiency can be improved, and real-time data of the discharging can be obtained, and the discharging is more accurate. As a convertible embodiment, the measuring pieces 11 and the support pieces 23 can also be provided in three or four groups, and there is no excessive restriction here.

[0039] like Figure 4As shown, in one embodiment, the end of the connector 3 extending into the silo 2 is honeycomb-shaped. Specifically, the connector 3 is a steel pipe, one end of which is welded with a circular plate, and a plurality of circular holes are spaced apart on the circular plate. By setting the end of the connector 3 extending into the silo 2 to be honeycomb-shaped, it is possible to prevent lithium hydroxide powder from entering the first hollow cavity through the opening at the end of the connector 3 and then entering the gas storage member 4, causing a dust explosion. As a convertible embodiment, polygonal holes or through holes of other shapes may also be provided on the circular plate, and there are no excessive restrictions here.

[0040] like Figure 2 As shown, in one embodiment, the connector 3 is detachably connected to the silo 2. Specifically, a sealing member 5 is provided between the connector 3 and the air inlet 22. The sealing member 5 is a polytetrafluoroethylene gasket. By detachably connecting the connector 3 to the silo 2, the installation and disassembly of the connector 3 and the gas storage member 4 are facilitated; by providing the sealing member 5, a gap can be prevented from forming between the air inlet 22 of the silo 2 and the connector 3, thereby preventing the lithium hydroxide powder from being discharged out of the silo 2 through the gap, causing inaccurate metering results and powder leakage. As a convertible embodiment, the sealing member 5 can also be made of materials such as asbestos or rubber, and there are no excessive restrictions here.

[0041] In one embodiment, a fixing part is fixedly connected to the inner side wall of the air inlet 22, and the fixing part is provided with a second hollow cavity, and the connector 3 is passed through the second hollow cavity. The fixing part is a bearing, which is welded at the air inlet 22 and sealed by a polytetrafluoroethylene gasket between the steel pipe and the bearing. By providing the fixing part, the contact area between the connector 3 and the air inlet 22 can be increased, and the connector 3 can be prevented from moving or even falling under a large pressure. As a convertible embodiment, the fixing part can also be a nut, the outer surface of the connector 3 is provided with a thread, the nut is welded at the air inlet 22, and the connector 3 is threadedly connected to the nut.

[0042] like Figure 2 As shown, in one embodiment, the air storage member 4 is provided with an air supply port 42 for providing compressed air into the air storage member 4. Furthermore, the air supply port 42 is connected to a filter member 7 for filtering impurities in the compressed air. Specifically, the filter member 7 is used to filter oil and water. By providing the filter member 7, impurities can be prevented from entering the silo 2 along with the compressed air, contaminating the lithium hydroxide powder and reducing the product quality. As a convertible embodiment, the filter member 7 may not be provided, or the filter member 7 may be provided in the first hollow cavity of the connector 3.

[0043] like Figure 2As shown, in one embodiment, a control component 6 is provided between the connecting component 3 and the air storage component 4. The control component 6 is a solenoid valve, which can adjust the flow rate and pressure of the compressed air. Furthermore, the solenoid valve is connected to the PLC controller, and the PLC controller can control whether the solenoid valve is open according to the discharge amount, that is, when the discharge amount is small, the solenoid valve is opened; when the discharge amount is close to the required weight, the solenoid valve is closed. By providing the control component 6, compressed air can be introduced into the silo 2 as needed to save costs. As a convertible embodiment, the control component 6 can also be a pressure switch or a pneumatic valve.

[0044] The working principle of the metering device in this embodiment is as follows:

[0045] Compressed air enters the air storage part 4 through the air supply port 42 for storage; when the discharge amount of lithium hydroxide powder is small and bridges are formed in the silo 2, the PLC controller controls the solenoid valve to open, and compressed air is passed into the silo 2 through the connecting piece 3 to break up the lithium hydroxide powder so as to continue discharging; when the discharge amount of lithium hydroxide powder is close to the required weight, the solenoid valve is closed, and the side wall of the silo 2 is manually hammered to break up the lithium hydroxide powder.

[0046] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A metering device for supporting an object to be supported (1), characterized in that: include: A silo (2) is provided with a discharge port (21) at the bottom, and a side wall of the silo (2) is provided with at least one air inlet (22); A connecting piece (3) is provided with a first hollow cavity, and one end of the connecting piece (3) extends into the silo (2); The gas storage member (4) is provided with a gas outlet (41), and the gas outlet (41) is connected to the other end of the connecting member (3). Compressed gas is stored in the gas storage member (4) and is used to pass the compressed gas into the silo (2) through the connecting member (3) to disperse the material in the silo (2).

2. The metering device according to claim 1, characterized in that The connecting piece (3) is detachably connected to the silo (2).

3. The metering device according to claim 2, characterized in that A sealing member (5) is provided between the connecting member (3) and the air inlet (22).

4. The metering device according to claim 3, characterized in that The sealing element (5) is a polytetrafluoroethylene gasket.

5. The metering device according to claim 3, characterized in that The inner side wall of the air inlet (22) is fixedly connected with a fixing piece, the fixing piece is provided with a second hollow cavity, and the connecting piece (3) is passed through the second hollow cavity.

6. The metering device according to any one of claims 1 to 5, characterized in that The end of the connecting piece (3) extending into the silo (2) is honeycomb-shaped.

7. The metering device according to any one of claims 1 to 5, characterized in that A control component (6) is provided between the connecting component (3) and the gas storage component (4).

8. The metering device according to any one of claims 1 to 5, characterized in that The gas storage component (4) is provided with a gas delivery port (42) for providing the compressed gas into the gas storage component (4).

9. The metering device according to claim 8, characterized in that The air delivery port (42) is connected to a filter element (7) for filtering impurities in the compressed gas.

10. The metering device according to any one of claims 1 to 5, characterized in that The object to be supported (1) is provided with a groove, and at least two measuring pieces (11) are provided at the end of the object to be supported (1) close to the groove. The side wall of the silo (2) is provided with a supporting piece (23) corresponding to the measuring piece (11), and the supporting piece (23) is fixed on the measuring piece (11) and is used to measure the weight of the material.

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