Water atomization device for manufacturing iron powder for batteries

Abstract

The utility model relates to the technical field of iron powder water atomization, in particular to a water atomization device for manufacturing iron powder for batteries, which comprises a support frame and a tundish fixed on the support frame, and a plurality of atomization barrels are arranged in the support frame and positioned below the tundish. A flow dividing bag is arranged in the supporting frame and located between the tundish and the atomization barrel, and a first ceramic discharge spout is fixedly connected to the bottom of the tundish. The conical protrusions in the flow dividing bag can divide metal liquid into two parts which enter the two atomization barrels respectively, the atomization spraying discs in the atomization barrels can be protected through protective gas sprayed out of the annular air nozzles firstly, and then the atomization spraying discs are beaten through high-pressure water flow sprayed out of the annular water nozzles to become finer. The double atomizing spray discs work simultaneously, so that metal liquid is atomized and dispersed more quickly and fully, the atomizing efficiency is improved, and the quality and performance of products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of iron powder water atomization, in particular to a water atomization device for making iron powder for batteries. Background Art

[0002] Lithium iron phosphate is a new type of lithium-ion battery with the advantages of high energy density, long life, and low self-discharge. It is widely used in electric vehicles, drones, smart homes and other fields. The positive electrode material of lithium iron phosphate is lithium iron phosphate. Iron-containing substances are required as raw materials in the production process of lithium iron phosphate. Iron powder for lithium iron phosphate batteries is a pure iron powder made by water atomization. It has the advantages of high purity, irregular shape, and large specific surface area. It is a high-quality raw material for the production of lithium iron phosphate batteries.

[0003] The production process is to crush the molten metal into powder by high-speed water flow, and finally produce water-atomized iron powder after cooling, solidification, granulation and classification. This kind of powder particles are irregular, with excellent fluidity and filling properties, and can be used in powder metallurgy, metal injection molding, electronic materials and other fields.

[0004] In addition, water atomized iron powder can also be used as a reducing agent, deoxidizer, additive, etc., and is widely used in metallurgy, chemical industry, environmental protection and other fields. It has the advantages of high compressibility and high bulk density, and can meet the needs of different fields.

[0005] However, the applicant has found that the prior art has at least the following problems: the conventional water atomization iron powder production device usually adopts a single-point atomization method, that is, the molten iron is atomized into small droplets through a single-point nozzle. However, the single-point atomization method has some shortcomings, such as low atomization efficiency, and the particle size is easily too large or too small during a single atomization process. Utility Model Content

[0006] The utility model aims to provide a water atomization device for making iron powder for batteries, so as to solve the problem of low efficiency of single-point atomization proposed in the above-mentioned background technology.

[0007] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a water atomization device for making iron powder for batteries, including a support frame and an intermediate bag fixed on the support frame, a plurality of atomization barrels are arranged inside the support frame below the intermediate bag, a diversion bag is arranged inside the support frame between the intermediate bag and the atomization barrel, a ceramic nozzle 1 is fixedly connected to the bottom of the intermediate bag, the ceramic nozzle 1 penetrates into the inside of the diversion bag and is fixedly connected, a top cover is arranged on the top of the atomization barrel, a plurality of ceramic nozzles 2 are arranged at the bottom of the diversion bag, the lower ends of the ceramic nozzles 2 penetrate into the top cover and extend into the inside of the atomization barrel, and the bottom of the top cover is fixedly connected to an atomization spray disc through a fixing rod.

[0008] The utility model is further configured that the four fixing rods form a group, and the angle between them is 90°.

[0009] The utility model is further configured that a conical protrusion is arranged inside the diversion bag, and the conical protrusion is located directly below the ceramic drain nozzle.

[0010] The utility model is further configured as follows: a water tank and an air tank are arranged on one side of the support frame, an annular air jet nozzle and an annular water spray nozzle are arranged inside the atomizing spray disc, a water pipe and an air pipe are arranged on the top of the top cover, and the water pipe and the air pipe penetrate into the interior of the atomizing barrel and are connected to the top cover.

[0011] The utility model is further configured that the gas tank is connected to an axial flow fan arranged on the top of the support frame through a connecting air pipe, and the axial flow fan is connected to the air pipe.

[0012] The utility model is further configured such that the water tank is connected to the high-pressure water pump on the top of the support frame through a connecting water pipe, a flow meter is connected to one side of the high-pressure water pump, a regulating valve is connected to one side of the flow meter, and the regulating valve is connected to the water pipe.

[0013] The utility model is further configured that the lower end of the atomizing barrel is fixedly connected with a discharge pipe, and the lower end of the discharge pipe is provided with a discharge valve.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model provides a water atomization device for producing iron powder for batteries with the following beneficial effects:

[0016] The molten metal in the tundish enters the diversion package through ceramic nozzle 1, and the conical protrusion in the diversion package will divide the molten metal into two parts. The two parts of molten metal enter two atomizing barrels respectively through ceramic nozzle 2. The atomizing spray plate in the atomizing barrel will first perform gas protection on the molten steel through the low-pressure protective gas sprayed from the annular air nozzle, and then it will be hit by the high-pressure water flow sprayed from the annular water nozzle to become smaller. The dual atomizing spray plates work at the same time, so that the molten metal is atomized and dispersed more quickly and fully, which improves the atomization efficiency and is also beneficial to improving the quality and performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only for the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0018] Figure 1This is a three-dimensional structural diagram of a water atomization device for producing iron powder for batteries according to an embodiment of the utility model;

[0019] Figure 2 This is a rear view of a water atomization device for making iron powder for batteries according to an embodiment of the utility model;

[0020] Figure 3 This is a side view of a water atomization device for making iron powder for batteries according to an embodiment of the utility model;

[0021] Figure 4 This is a water atomization device for making iron powder for batteries according to the embodiment of the utility model. Figure 1 Sectional view at point A.

[0022] The markings in the figure are: 1. Support frame; 2. Tundish; 3. Ceramic nozzle 1; 4. Diverter bag; 5. Ceramic nozzle 2; 6. Atomizing barrel; 7. Top cover; 8. Fixing rod; 9. Atomizing spray disc; 10. Water pipe; 11. Air pipe; 12. Discharge pipe; 13. Unloading valve; 14. Water tank; 15. Connecting water pipe; 16. High-pressure water pump; 17. Flow meter; 18. Regulating valve; 19. Air tank; 20. Connecting air pipe; 21. Axial flow fan. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other; the following will be combined with the drawings in the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0024] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limitations of the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or a transmission connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements.

[0025] See also Figure 1 , 2 and Figure 3 , 4 A water atomization device for making iron powder for batteries comprises a support frame 1 and an intermediate bag 2 fixed on the support frame 1, a plurality of atomizing barrels 6 are arranged inside the support frame 1 below the intermediate bag 2, a diversion bag 4 is arranged between the intermediate bag 2 and the atomizing barrel 6 inside the support frame 1, a ceramic leak nozzle 3 is fixedly connected to the bottom of the intermediate bag 2, the ceramic leak nozzle 3 penetrates into the inside of the diversion bag 4 and is fixedly connected, a top cover 7 is arranged on the top of the atomizing barrel 6, a plurality of ceramic leak nozzles 2 5 are arranged at the bottom of the diversion bag 4, the lower ends of the ceramic leak nozzles 2 5 penetrate into the inside of the atomizing barrel 6, and the bottom of the top cover 7 is fixedly connected to an atomizing spray disc 9 through a fixing rod 8.

[0026] By adopting the above technical solution, the metal liquid in the intermediate ladle 2 enters the diversion ladle 4 through the ceramic leak nozzle 1 3, and the conical protrusion in the diversion ladle 4 will divide the metal liquid into two parts. The two parts of metal liquid enter the atomizing barrel 6 respectively through the ceramic leak nozzle 2 5. The atomizing spray disc 9 in the atomizing barrel 6 will first be protected by the protective gas sprayed by the annular air nozzle, and then it will be hit down by the high-pressure water flow sprayed by the annular water nozzle to become smaller, and it can also reduce oxidation.

[0027] Four fixing rods 8 form a group, and the angle between them is 90°. A conical protrusion is arranged inside the diversion bag 4, and the conical protrusion is located directly below the ceramic leak nozzle 3. The lower end of the atomizing barrel 6 is fixedly connected to the discharge pipe 12, and the lower end of the discharge pipe 12 is provided with a discharge valve 13.

[0028] By adopting the above technical solution, the stability of the atomizing spray disc 9 is ensured by four fixing rods 8, and the conical protrusion in the diversion bag 4 will divide the metal liquid into two parts. The two parts of the metal liquid enter the atomizing barrel 6 respectively through the ceramic leak nozzle 2 5, and the discharge valve 13 is opened, and the metal powder accumulated at the bottom of the atomizing barrel 6 will be discharged through the discharge pipe 12.

[0029] A water tank 14 and an air tank 19 are arranged on one side of the support frame 1, an annular air jet nozzle and an annular water spray nozzle are arranged inside the atomizing spray disc 9, a water pipe 10 and an air pipe 11 are arranged on the top of the top cover 7, the water pipe 10 and the air pipe 11 penetrate into the inside of the atomizing barrel 6 and are connected to the top cover 7, the air tank 19 is connected to the axial flow fan 21 arranged on the top of the support frame 1 through the connecting air pipe 20, the axial flow fan 21 is connected to the air pipe 11, the water tank 14 is connected to the high-pressure water pump 16 on the top of the support frame 1 through the connecting water pipe 15, a flow meter 17 is connected to one side of the high-pressure water pump 16, a regulating valve 18 is connected to one side of the flow meter 17, and the regulating valve 18 is connected to the water pipe 10.

[0030] By adopting the above technical solution, when the metal liquid flows through the middle of the atomizing spray disc 9, the low-pressure protective gas sprayed from the annular air nozzle will first be used to protect the metal liquid, and then it will become smaller under the impact of the high-pressure water flow sprayed from the annular water nozzle. Since gas is involved in the early stage of water atomization and then atomized by high-pressure water, the oxidation of iron powder before atomization is reduced. Through the diversion of the diversion bag 4, the two atomizing spray discs 9 can work at the same time, which greatly improves the working efficiency of the atomizing device.

[0031] The working principle of the utility model is that the single-point atomization efficiency is low. The metal liquid in the intermediate bag 2 enters the diverter bag 4 through the ceramic leak nozzle 1 3. The conical protrusion in the diverter bag 4 will divide the metal liquid into two parts. The two parts of the metal liquid enter the atomizing barrel 6 respectively through the ceramic leak nozzle 2 5. The atomizing spray disc 9 in the atomizing barrel 6 is provided with an annular air jet nozzle and an annular water spray nozzle. The annular air jet nozzle is located above the annular water spray nozzle. The annular air jet nozzle is connected to the axial flow fan 21 through the air pipe 11, and the annular water spray nozzle is connected to the regulating valve 18, the flow meter 17, and the high-pressure water pump 16 through the water pipe 10. When the metal liquid flows through the middle of the atomizing spray disc 9, the low-pressure protective gas sprayed by the annular air jet nozzle will first be used to protect the metal liquid with gas, and then it will become smaller under the impact of the high-pressure water flow sprayed by the annular water spray nozzle. Since the gas participates in the atomization in the early stage, and then the high-pressure water participates in the atomization, the oxidation of the iron powder is reduced. Through the diversion of the diverter bag 4, the two atomizing spray discs 9 can work at the same time, which greatly improves the working efficiency of the atomizing device.

[0032] The axial flow fan 21 delivers the protective gas in the gas tank 19 to the annular air nozzle, the high-pressure water pump 16 delivers the water in the water tank 14 to the annular water nozzle, and the regulating valve 18 is used to adjust the flow rate of water. After the metal liquid is atomized in the atomizing barrel 6, it will accumulate at the bottom of the atomizing barrel 6. After the discharge valve 13 is opened, the metal powder accumulated at the bottom of the atomizing barrel 6 will be discharged through the discharge pipe 12.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0034] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water atomization device for producing iron powder for batteries, comprising a support frame (1) and a tundish (2) fixed on the support frame (1), characterized in that: A plurality of atomizing barrels (6) are arranged inside the support frame (1) below the intermediate bag (2); a flow diversion bag (4) is arranged between the intermediate bag (2) and the atomizing barrel (6) inside the support frame (1); a ceramic nozzle 1 (3) is fixedly connected to the bottom of the intermediate bag (2); the ceramic nozzle 1 (3) penetrates into the inside of the flow diversion bag (4) and is fixedly connected; a top cover (7) is arranged on the top of the atomizing barrel (6); a plurality of ceramic nozzles 2 (5) are arranged at the bottom of the flow diversion bag (4); the lower ends of the ceramic nozzles 2 (5) penetrate into the inside of the atomizing barrel (6); and the bottom of the top cover (7) is fixedly connected to an atomizing spray disc (9) via a fixing rod (8).

2. The water atomization device for producing iron powder for batteries according to claim 1, characterized in that: The fixing rods (8) are grouped into four pieces, and the angle between them is 90°.

3. The water atomization device for producing iron powder for battery according to claim 1, characterized in that: The diversion bag (4) is provided with a conical protrusion inside, and the conical protrusion is located directly below the ceramic drain nozzle (3).

4. The water atomization device for producing iron powder for batteries according to claim 1, characterized in that: A water tank (14) and an air tank (19) are arranged on one side of the support frame (1); an annular air jet nozzle and an annular water jet nozzle are arranged inside the atomizing spray disc (9); a water pipe (10) and an air pipe (11) are arranged on the top of the top cover (7); the water pipe (10) and the air pipe (11) penetrate into the interior of the atomizing barrel (6) and are connected to the top cover (7).

5. The water atomization device for producing iron powder for battery according to claim 4, characterized in that: The gas tank (19) is connected to an axial flow fan (21) arranged on the top of the support frame (1) via a connecting air pipe (20), and the axial flow fan (21) is connected to the air pipe (11).

6. The water atomization device for producing iron powder for batteries according to claim 4, characterized in that: The water tank (14) is connected to a high-pressure water pump (16) on the top of the support frame (1) via a connecting water pipe (15); a flow meter (17) is connected to one side of the high-pressure water pump (16); a regulating valve (18) is connected to one side of the flow meter (17); and the regulating valve (18) is connected to the water pipe (10).

7. The water atomization device for producing iron powder for battery according to claim 1, characterized in that: The lower end of the atomizing barrel (6) is fixedly connected to a discharge pipe (12), and the lower end of the discharge pipe (12) is provided with a discharge valve (13).

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