Split type target jet mill

Abstract

The utility model relates to a split type target jet mill which comprises a powder feeding device, the powder feeding device comprises a first barrel, a first target head and a first Venturi powder pump, and the first Venturi powder pump is suitable for feeding new powder into the first barrel to collide with the first target head; the powder crushing device comprises a second barrel, at least one second Venturi powder pump and a second target head, the second Venturi powder pump is suitable for feeding coarse powder into the second barrel and colliding with the second target head, and a powder outlet of the second barrel is connected with the powder inlet channel; and the powder grading device comprises a third barrel, a motor and a powder grading impeller, and the third barrel is connected with the powder inlet channel, the fine powder channel and the coarse powder channel. The particle size of coarse powder obtained through target type crushing is more targeted, and the crushing efficiency and quality are improved. The powder feeding device, the powder crushing device and the powder grading device are three independent devices, can be independently processed in the production process, then can be transported in a split mode, and are assembled into a whole after arriving at the site.

Description

Technical Field

[0001] The utility model relates to the field of powder making equipment, in particular to a split target air flow mill. Background Art

[0002] Target jet mills are relatively rare among jet mills. Their principle is similar to that of a fluidized bed jet mill, except that the pulverization occurs when a high-speed jet stream and powder collide with a rigid target head. The most common and advanced target jet mill is the disc target jet mill.

[0003] The current disc target air flow mill has insufficient powder classification effect and is difficult to control the particle size of the classified powder. Secondly, the air flow mill is an integral type, which is inconvenient to manufacture and assemble later. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a split target airflow mill to solve the technical problems of the current target airflow mills, such as insufficient powder classification effect, inconvenient processing and manufacturing, and inconvenient subsequent assembly and maintenance.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] Provided is a split target jet mill, comprising

[0007] a powder feeding device comprising a first barrel, a first target head, and a first venturi powder pump, wherein the first venturi powder pump is connected to the first barrel, the first target head is disposed in the first barrel, and the first venturi powder pump is adapted to feed new powder into the first barrel to collide with the first target head;

[0008] a powder crushing device comprising a second barrel, at least one second Venturi powder pump, and a second target head, wherein the second target head is disposed in the second barrel, the second Venturi powder pump is connected to the second barrel and the coarse powder channel, respectively, the second Venturi powder pump being adapted to deliver the coarse powder into the second barrel and collide with the second target head, and the powder outlet of the second barrel being connected to the powder inlet channel;

[0009] The powder classification device includes a third cylinder, a motor and a powder classification impeller. The third cylinder is connected to a powder inlet channel, a fine powder channel and a coarse powder channel. The powder inlet channel is connected to the powder outlets of the first cylinder and the second cylinder. The fine powder channel is connected to an exhaust system. The powder classification impeller is located at the entrance of the fine powder channel and is suitable for screening powder.

[0010] Furthermore, the powder inlet channel is connected to the lower side wall of the third cylinder, the coarse powder channel is connected to the upper side wall of the third cylinder, and the fine powder channel is connected to the center position of the upper end of the third cylinder;

[0011] The powder inlet channel and the coarse powder channel are respectively tangentially connected to the third cylinder.

[0012] Furthermore, an inner cylinder is provided in the third cylinder, the inner cylinder is mounted on the top of the third cylinder, the fine powder channel is connected to the center of the top of the third cylinder and communicates with the inner cylinder chamber, and the powder classification impeller is located in the inner cylinder;

[0013] The powder inlet channel is connected to the upper side wall of the third cylinder, the bottom of the third cylinder is located in the conical cavity, and the bottom of the conical cavity is connected to the coarse powder channel.

[0014] Furthermore, the number of the second Venturi powder pumps is two, one of which is suitable for inputting coarse powder, and the other second Venturi powder pump is suitable for inputting new powder.

[0015] Furthermore, the powder outlet of the second cylinder is located at the lower end.

[0016] Furthermore, the powder outlet of the second cylinder is located at the upper end.

[0017] The beneficial effects of the utility model are:

[0018] New powder can be crushed by the first target head of the powder feeding device, and coarse powder can be crushed by the second target head of the powder crushing device. The crushed powders enter the powder classifying device together. The speed of the powder classifying impeller is controlled by the motor, so that the particle size of the crushed powder can be controlled. The fine powder that meets the set requirements is discharged from the fine powder channel, and the coarse powder enters the powder crushing device for target crushing. The particle size of the coarse powder crushed by target crushing is more targeted, which improves the powder crushing efficiency and quality.

[0019] The powder feeding device, powder crushing device and powder grading device are three independent devices, which can be processed independently during the production process, and then can be transported separately and assembled into one on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the first split target air jet mill of the utility model;

[0022] Figure 2 This is a schematic diagram of the second split target airflow mill of the utility model;

[0023] in,

[0024] 1. Powder feeding device, 11. First cylinder, 12. First target head, 13. First Venturi powder pump;

[0025] 2. Powder crushing device, 21. Second cylinder, 22. Second target head, 23. Second Venturi powder pump;

[0026] 3. Powder classification device, 31. Third cylinder, 32. Powder classification impeller, 33. Motor, 34. Inner cylinder;

[0027] 41. Coarse powder channel, 42. Fine powder channel, 43. Powder inlet channel. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] This application provides a split-type target jet mill, which is described in detail below. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment below have their own specific focus. For details not provided in one embodiment, please refer to the relevant descriptions of other embodiments.

[0030] To address the technical issues of target-type jet mills in the prior art, such as insufficient powder classification performance, inconvenient manufacturing, and inconvenient assembly and maintenance, one embodiment of the present application provides a split target-type jet mill, which is described in detail below.

[0031] like Figure 1 As shown, a split target jet mill includes

[0032] The powder feeding device 1 includes a first barrel 11, a first target head 12, and a first Venturi powder pump 13. The first Venturi powder pump 13 is connected to the first barrel 11. The first target head 12 is disposed in the first barrel 11. The first Venturi powder pump 13 is adapted to feed new powder into the first barrel 11 and collide with the first target head 12.

[0033] The air inlet pipe of the first Venturi powder pump 13 is connected to the high-pressure airflow, and the new powder is sent into the first cylinder 11 through the first Venturi powder pump 13. When the first Venturi powder pump 13 inputs the high-pressure airflow into the first cylinder 11, it carries the new powder and hits the first target head 12, causing the powder to be target-type crushed.

[0034] like Figure 1As shown, the powder crushing device 2 includes a second barrel 21, at least one second Venturi powder pump 23 and a second target head 22. The second target head 22 is disposed in the second barrel 21. The second Venturi powder pump 23 is connected to the second barrel 21 and the coarse powder channel 41 respectively. The second Venturi powder pump 23 is suitable for feeding the coarse powder into the second barrel 21 and colliding with the second target head 22. The powder outlet of the second barrel 21 is connected to the powder inlet channel 43.

[0035] There can be one or two second Venturi powder pumps 23. If only one second Venturi powder pump 23 is provided, the second Venturi powder pump 23 is only used to convey coarse powder. If there are two second Venturi powder pumps 23, one of them can be used to convey new powder. At this time, the coarse powder and new powder are crushed simultaneously in the second cylinder 21.

[0036] It is also possible to complete the collision of new powder and coarse powder in one cylinder. Just replace the two cylinders with a larger cylinder.

[0037] like Figure 1 The powder classification device 3 includes a third cylinder 31, a motor 33 and a powder classification impeller 32. The third cylinder 31 is connected to a powder inlet channel 43, a fine powder channel 42 and a coarse powder channel 41. The powder inlet channel 43 is connected to the powder outlet of the first cylinder 11 and the second cylinder 21. The fine powder channel 42 is connected to the exhaust system. The powder classification impeller 32 is located at the entrance of the fine powder channel 42 and is suitable for screening the powder.

[0038] The powder outlets of the first barrel 11 and the second barrel 21 can be connected to the third barrel 31 respectively, or combined into a powder inlet channel 43, and the powder inlet channel 43 is arranged tangentially.

[0039] The exhaust system provides negative pressure to the fine powder channel 42 to extract the fine powder screened by the powder classification impeller 32 , and the coarse powder in the third cylinder 31 is thrown to the cylinder wall and finally discharged from the coarse powder channel 41 .

[0040] Specifically, as an optional implementation in this embodiment, Figure 1 As shown, the powder inlet channel 43 is connected to the lower side wall of the third cylinder 31, the coarse powder channel 41 is connected to the upper side wall of the third cylinder 31, and the fine powder channel 42 is connected to the center position of the upper end of the third cylinder 31;

[0041] The powder inlet channel 43 and the coarse powder channel 41 are tangentially connected to the third cylinder 31 .

[0042] The powder inlet channel 43 is tangentially connected to the third cylinder 31. When powder is input into the third cylinder 31 from the powder inlet channel 43, the powder can be driven to rotate in the third cylinder 31, which is more conducive to the separation of coarse powder.

[0043] The coarse powder channel 41 is tangentially connected to the third cylinder 31 , which helps the separated coarse powder to be discharged from the third cylinder 31 .

[0044] Specifically, as an optional implementation in this embodiment, Figure 1 As shown, the powder outlet of the second barrel 21 is located at the lower end. The powder in the second barrel 21 can be directly discharged from the lower end after being crushed, which is more conducive to powder discharge.

[0045] When the split-type target jet mill is operating, the powder feeder 1 is responsible for target-crushing the new powder, which is then fed tangentially into the third barrel 31. The powder crusher 2 is responsible for target-crushing the separated coarse powder. Because the coarse powder is the coarse powder that has been screened by the powder classification impeller 32, the powder particle size is more targeted, avoiding the production of useless ultrafine powder. After the target crushing, the coarse powder enters the third barrel 31 for powder classification along with the new powder after crushing. This ensures that the powder classification device 3 has sufficient powder to enter for screening, thereby improving the powder production efficiency of the entire target jet mill.

[0046] The split target airflow mill of the utility model comprises a powder feeding device 1, a powder crushing device 2 and a powder classifying device 3 which are three independent devices, which are connected by pipelines, and are convenient for production and manufacturing. The split type is also convenient for transportation, and they can be directly connected and assembled into a target airflow mill through pipelines after arriving at the site.

[0047] like Figure 2 As shown, another embodiment of the present application provides a split target jet mill, which is described in detail below.

[0048] In this embodiment, the powder classification device 3 is different from that in the above-mentioned embodiment.

[0049] An inner cylinder 34 is provided in the third cylinder 31 of the powder classifying device 3. The inner cylinder 34 is mounted on the top of the third cylinder 31. The fine powder channel 42 is connected to the center of the top of the third cylinder 31 and communicates with the chamber of the inner cylinder 34. The powder classifying impeller 32 is located in the inner cylinder 34.

[0050] The powder inlet channel 43 is connected to the upper side wall of the third cylinder 31 . The bottom of the third cylinder 31 is located in the conical cavity, and the bottom of the conical cavity is connected to the coarse powder channel 41 .

[0051] The powder classifying device 3 of this embodiment is equivalent to a cyclone separator. After entering the powder inlet channel 43 tangentially from the upper end, the powder rotates along the inner wall and slowly moves downward under the action of gravity. The fine powder is sieved by the powder classifying impeller 32 at the lower end of the inner cylinder 34 and then sucked away, while the coarse powder enters the conical cavity and is discharged from the coarse powder channel 41.

[0052] In this embodiment, the powder outlet of the second cylinder 21 serving as the powder crushing device 2 is located at the upper end. When the powder outlet faces upward, the powder can be deposited or suspended at the bottom of the cylinder and can be further crushed along with the airflow, thereby improving the powder crushing efficiency.

[0053] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0054] In the description of the embodiments of the present invention, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0055] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. There may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interface, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0057] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0058] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0059] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A split target jet mill, characterized in that: include A powder feeding device (1) comprises a first barrel (11), a first target head (12) and a first venturi powder pump (13), wherein the first venturi powder pump (13) is connected to the first barrel (11), the first target head (12) is arranged in the first barrel (11), and the first venturi powder pump (13) is suitable for feeding new powder into the first barrel (11) to collide with the first target head (12); A powder crushing device (2) comprises a second barrel (21), at least one second Venturi powder pump (23) and a second target head (22), wherein the second target head (22) is arranged in the second barrel (21), the second Venturi powder pump (23) is connected to the second barrel (21) and the coarse powder channel (41) respectively, the second Venturi powder pump (23) is suitable for sending the coarse powder into the second barrel (21) and colliding with the second target head (22), and the powder outlet of the second barrel (21) is connected to the powder inlet channel (43); A powder classification device (3) comprises a third cylinder (31), a motor (33) and a powder classification impeller (32); the third cylinder (31) is connected to a powder inlet channel (43), a fine powder channel (42) and a coarse powder channel (41); the powder inlet channel (43) is connected to the powder outlets of the first cylinder (11) and the second cylinder (21); the fine powder channel (42) is connected to an exhaust system; the powder classification impeller (32) is located at the entrance of the fine powder channel (42) and is suitable for screening powder.

2. The split target jet mill according to claim 1, characterized in that: The powder inlet channel (43) is connected to the lower side wall of the third cylinder (31), the coarse powder channel (41) is connected to the upper side wall of the third cylinder (31), and the fine powder channel (42) is connected to the center position of the upper end of the third cylinder (31); The powder inlet channel (43) and the coarse powder channel (41) are respectively tangentially connected to the third cylinder (31).

3. The split target jet mill according to claim 1, characterized in that: An inner cylinder (34) is provided in the third cylinder (31), the inner cylinder (34) is mounted on the top of the third cylinder (31), the fine powder channel (42) is connected to the center of the top of the third cylinder (31) and communicates with the chamber of the inner cylinder (34), and the powder classification impeller (32) is located in the inner cylinder (34); The powder inlet channel (43) is connected to the upper side wall of the third cylinder (31), the bottom of the third cylinder (31) is located in the conical cavity, and the bottom of the conical cavity is connected to the coarse powder channel (41).

4. The split target jet mill according to claim 1, characterized in that: The number of the second Venturi powder pumps (23) is two, one of which is suitable for inputting coarse powder, and the other second Venturi powder pump (23) is suitable for inputting new powder.

5. The split target jet mill according to claim 2, characterized in that: The powder outlet of the second cylinder (21) is located at the lower end.

6. The split target jet mill according to claim 3, characterized in that: The powder outlet of the second cylinder (21) is located at the upper end.

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