Feeding device and powder making equipment

Abstract

The utility model discloses powder making equipment which comprises a feeding device and a material melting furnace, the feeding device comprises a lifting assembly, a material pushing assembly, a material guiding piece and a feeding assembly, and the lifting assembly lifts raw materials to a discharging position; the material pushing assembly pushes out the raw materials lifted to the discharging position by the lifting assembly; one end of the material guiding piece extends to the discharging position so as to receive the raw materials pushed out by the material pushing assembly, and the other end of the material guiding piece extends to the position above the material melting furnace; the feeding assembly corresponds to the end, away from the material pushing assembly, of the material guiding part, the material guiding part can guide raw materials to be conveyed to the feeding assembly, and the feeding assembly can convey the raw materials into the material melting furnace at a first conveying speed; wherein the raw materials enter the feeding assembly at a second conveying speed, and the first conveying speed is smaller than the second conveying speed. Therefore, the feeding assembly can slow down the conveying speed of the raw materials, the raw materials are controlled to be slowly conveyed to the melting furnace, molten liquid in the melting furnace is prevented from splashing, and safety is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of powder preparation, and particularly relates to a feeding device and a powder preparation equipment. BACKGROUND

[0002] In the preparation of certain powders, the raw materials are usually mixed first, then melted, then fired, and finally the powders produced by firing are collected. In the existing preparation process, the raw materials are usually placed in a trolley for transfer and put into a melting furnace. The speed of feeding the raw materials into the furnace is uncontrollable. If the speed is too fast, the molten liquid in the furnace may splash, affecting production safety. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the application is that in the existing powder preparation process, the feeding of raw materials is uncontrollable, which may cause the molten liquid in the furnace to splash. To solve this technical problem, a feeding device and a preparation equipment are provided, which can control the feeding process of raw materials and avoid the molten liquid in the furnace from splashing.

[0004] The technical scheme provided by the application is as follows:

[0005] A feeding device comprises:

[0006] a rack;

[0007] a lifting assembly arranged on the rack and used for lifting raw materials to a discharging position;

[0008] a pushing assembly arranged on the rack and used for pushing the raw materials lifted by the lifting assembly to the discharging position;

[0009] a guide piece, one end of which extends to the discharging position to receive the raw materials pushed by the pushing assembly, and the other end of which extends above a melting furnace;

[0010] a feeding assembly arranged above the melting furnace and corresponding to the end of the guide piece away from the pushing assembly, the guide piece being capable of guiding the raw materials to be conveyed to the feeding assembly, and the feeding assembly being capable of conveying the raw materials into the melting furnace at a first conveying speed;

[0011] wherein the raw materials enter the feeding assembly at a second conveying speed, and the first conveying speed is less than the second conveying speed.

[0012] The raw material is first lifted to the discharging position by the lifting assembly, and then the raw material is pushed into the guide member by the pushing assembly, the guide member guides the raw material into the feeding assembly, and then the feeding assembly controls the raw material to be conveyed into the smelting furnace at the first conveying speed. The speed of the raw material when entering the feeding assembly is greater than the first conveying speed, so the feeding assembly can slow down the conveying speed of the raw material, control the slow conveying of the raw material to the smelting furnace, avoid the splashing of the molten liquid in the smelting furnace, and improve the safety.

[0013] Further, the feeding assembly comprises a mounting seat, a first rolling member and a second rolling member, the mounting seat is arranged above the smelting furnace, the first rolling member and the second rolling member are rotatably arranged in the mounting seat and are arranged in a spaced manner.

[0014] The guide member can guide the raw material to be conveyed between the first rolling member and the second rolling member, and the first rolling member and the second rolling member can clamp the raw material and convey the raw material at the first conveying speed during rotation.

[0015] Further, the feeding assembly further comprises a feeding driving member, and the feeding driving member is connected with the first rolling member and / or the second rolling member.

[0016] Further, the feeding assembly further comprises a damping structure, and the damping structure is arranged on the first rolling member and / or the second rolling member to provide damping during rotation of the first rolling member and / or the second rolling member.

[0017] Further, the lifting assembly comprises a lifting driving member, a transmission module and a supporting plate, the lifting driving member and the transmission module are arranged on the rack, and the lifting driving member is connected with the supporting plate through the transmission module to drive the supporting plate to move relative to the rack; the supporting plate is used for carrying raw materials, and the supporting plate can lift the raw materials to the discharging position during movement.

[0018] Further, the lifting assembly comprises a plurality of supporting plates, and the plurality of supporting plates are arranged in a spaced manner on the transmission module, each supporting plate can move along a predetermined path in a cycle, and the plurality of supporting plates can pass through the discharging position in sequence during movement along the predetermined path.

[0019] Further, the pushing assembly comprises a pushing driving member and a pushing plate, the pushing driving member is arranged on the rack and connected with the pushing plate to drive the pushing plate to move relative to the rack, and the pushing plate can push the raw materials lifted to the discharging position by the lifting assembly out during movement.

[0020] Further, the material guiding member is provided with a material guiding groove, an inlet end of the material guiding groove is directed to the discharging position to receive the raw material pushed out by the pushing assembly, an outlet end of the material guiding groove is directed to the feeding assembly, and the height of the material guiding groove gradually decreases from the inlet end to the outlet end.

[0021] A powder making device, comprising a melting furnace and the feeding device as described above.

[0022] Further, a firing furnace is arranged downstream of the melting furnace, and a collecting device is connected to the firing furnace and capable of collecting the powder produced by firing. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the embodiments of the present application and explain the present application together with the embodiments, but do not limit the present application.

[0024] Figure 1 A structural schematic diagram of a powder making device according to an embodiment of the present application is shown in the figure;

[0025] Figure 2 A structural schematic diagram of a powder making device according to an embodiment of the present application is shown in the figure; Figure 1 A structural schematic diagram of a powder making device according to an embodiment of the present application is shown in the figure;

[0026] Figure 3 A structural schematic diagram of a powder making device according to an embodiment of the present application is shown in the figure; Figure 1 A structural schematic diagram of a powder making device according to an embodiment of the present application is shown in the figure.

[0027] REFERENCE NUMERALS:

[0028] 10, powder making device; 20, raw material; 110, frame; 120, lifting assembly; 121, lifting driving member; 122, transmission module; 123, supporting plate; 130, pushing assembly; 131, pushing driving member; 132, pushing plate; 133, inductor; 140, material guiding member; 141, material guiding groove; 150, feeding assembly; 151, first rolling member; 152, second rolling member; 210, melting furnace; 211, furnace body; 212, furnace cover; 2121, inlet; 213, floating ball structure; 214, high liquid level sensor; 215, low liquid level sensor; 220, firing furnace; 230, cyclone separator; 240, filter collector; 250, exhaust fan. DETAILED DESCRIPTION

[0029] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] As shown in Figure 1 The present application provides a powder making equipment 10, which comprises a feeding device and a melting furnace 210. The feeding device is arranged upstream of the melting furnace 210 and is used to put raw materials 20 into the melting furnace 210. The feeding device can control the slow feeding of the raw materials 20 to avoid splashing of the molten liquid in the melting furnace 210 and improve safety.

[0032] In one embodiment, the feeding device comprises a rack 110, a lifting assembly 120, a pushing assembly 130, a guide 140 and a feeding assembly 150. The lifting assembly 120 and the pushing assembly 130 are arranged on the rack 110. The lifting assembly 120 is used to lift the raw materials 20 to a discharge position, i.e. above the melting furnace 210. The pushing assembly 130 is used to push the raw materials 20 lifted by the lifting assembly 120 to the discharge position.

[0033] The feeding assembly 150 is arranged above the melting furnace 210. One end of the guide 140 extends to the discharge position to receive the raw materials 20 pushed by the pushing assembly 130 from the lifting assembly 120. The other end of the guide 140 extends above the melting furnace 210 and is located at the feeding assembly 150 to guide the raw materials 20 to be conveyed to the feeding assembly 150. The feeding assembly 150 can convey the raw materials 20 into the melting furnace 210 at a first conveying speed.

[0034] In the process of conveying the raw materials 20 to the feeding assembly 150 by the guide 140, the raw materials 20 enter the feeding assembly 150 at a second conveying speed, and the first conveying speed is less than the second conveying speed.

[0035] With the above powder making device 10, the raw material 20 is first lifted to the discharging position by the lifting assembly 120, and then the raw material 20 is pushed into the guide member 140 by the pushing assembly 130, the guide member 140 guides the raw material 20 to enter the feeding assembly 150, and then the feeding assembly 150 controls the raw material 20 to be conveyed into the smelting furnace 210 at a first conveying speed. The speed of the raw material 20 when entering the feeding assembly 150 is greater than the first conveying speed, so the feeding assembly 150 can slow down the conveying speed of the raw material 20, control the slow conveying of the raw material 20 into the smelting furnace 210, avoid the splashing of the molten liquid in the smelting furnace 210, and improve the safety.

[0036] It can be understood that in the embodiment, the lifting assembly 120 is used to lift the raw material 20 to a height higher than the smelting furnace 210, and then the raw material 20 slides along the guide member 140 to the feeding assembly 150 under the action of gravity, and the feeding assembly 150 controls the slow feeding of the raw material 20 into the smelting furnace 210.

[0037] Please refer to Figure 2 In one embodiment, the lifting assembly 120 includes a lifting drive 121, a transmission module 122, and a tray 123. The lifting drive 121 and the transmission module 122 are arranged on the rack 110, and the lifting drive 121 is connected to the tray 123 through the transmission module 122 to drive the tray 123 to move relative to the rack 110. The tray 123 is used to carry the raw material 20, and the tray 123 can carry the raw material 20 to the discharging position during movement, so that the pushing assembly 130 pushes the raw material 20 on the tray 123 out to the guide member 140.

[0038] Further, the transmission module 122 includes a driving gear, a driven gear, and a transmission chain. The driving gear and the driven gear are arranged in a vertical direction and are spaced apart from each other on the rack 110. The lifting drive 121 is connected to the driving gear, and the transmission chain is wound around the driving gear and the driven gear. The tray 123 is connected to the transmission chain to move with the transmission chain. It can be understood that the tray 123 can move in the vertical direction under the action of the transmission chain. Assuming that there is a feeding position below, the raw material 20 is fed onto the tray 123 at the feeding position, and then the tray 123 rises in the vertical direction to lift the raw material 20 to the discharging position. Optionally, the lifting drive 121 is a motor.

[0039] In one embodiment, the lifting assembly 120 includes a plurality of trays 123, and the plurality of trays 123 are arranged at intervals on the transmission module 122. Each tray 123 can move along a predetermined path in a cycle, and the plurality of trays 123 can pass through the discharging position in sequence during movement along the predetermined path to increase the efficiency of feeding. Specifically Figure 1In the shown embodiment, the plurality of supporting plates 123 are evenly spaced along the length of the transmission chain. During the rotation of the transmission chain, the plurality of supporting plates 123 can move along the closed path formed by the transmission chain.

[0040] It can be understood that, in the embodiment, the plurality of supporting plates 123 move with the transmission chain, and first lift the raw material 20 from the lower feeding position to the discharging position. After the raw material 20 is pushed out to the guide member 140, the empty supporting plate 123 continues to move with the transmission chain, i.e. continues to rise for a distance, and then falls to the bottom, and then continues to rise to the feeding position. In other embodiments, if only one supporting plate 123 is provided, the supporting plate 123 can reciprocate between the feeding position and the discharging position.

[0041] In one embodiment, the pushing assembly 130 includes a pushing driving member 131 and a pushing plate 132. The pushing driving member 131 is arranged on the rack 110 and connected with the pushing plate 132 to drive the pushing plate 132 to move relative to the rack 110. During the movement of the pushing plate 132, the pushing plate 132 can push the raw material 20 lifted to the discharging position by the lifting assembly 120 out, i.e. to the guide member 140.

[0042] It can be understood that, in the embodiment, the pushing plate 132 is arranged on the supporting plate 123, and the pushing plate 132 is arranged on the supporting plate 123. Figure 1 In the shown embodiment, the supporting plate 123 lifts the raw material 20 to the discharging position in the vertical direction, and then the pushing plate 132 moves in the horizontal direction to push the raw material 20 on the supporting plate 123 out to the guide member 140. As can be seen, when the supporting plate 123 lifts the raw material 20 to the discharging position, the pushing plate 132 and the guide member 140 are located on both sides of the raw material 20. The pushing plate 132 moves towards the guide member 140 and pushes the raw material 20 into the guide member 140, and then the pushing plate 132 moves away from the guide member 140 to facilitate the continuous rising of the supporting plate 123 below. Optionally, the pushing driving member 131 is a pneumatic cylinder, and preferably a rodless pneumatic cylinder, to facilitate the arrangement.

[0043] Further, the pushing assembly 130 further includes a sensor 133 arranged on the rack 110 for detecting whether there is raw material 20 on the supporting plate 123 lifted to the discharging position. If there is raw material 20 on the supporting plate 123, the pushing driving member 131 is actuated to drive the pushing plate 132 to push the raw material 20 on the supporting plate 123 out to the guide member 140. If there is no raw material 20 on the supporting plate 123, the lifting driving member 121 is actuated to drive the supporting plate 123 below to continue to rise to the discharging position.

[0044] Please refer to Figure 3In one embodiment, the material guiding member 140 is provided with a material guiding groove 141, the material guiding groove 141 is provided with an inlet end facing the discharging position to receive the raw material 20 pushed out by the pushing assembly 130, and the material guiding groove 141 is provided with an outlet end facing the feeding assembly 150, and the height of the material guiding groove 141 gradually decreases from the inlet end to the outlet end, so that the raw material 20 slides from the inlet end to the outlet end under the action of gravity and is output to the feeding assembly 150.

[0045] It can be determined that the outlet end of the material guiding groove 141 is located above the feeding assembly 150 to ensure that the raw material 20 is transported to the feeding assembly 150. It should be noted that the surface of the material guiding groove 141 is smooth to ensure that the raw material 20 smoothly slides to the feeding assembly 150. In addition, in the embodiment, the raw material 20 is in block shape, and the shape of the material guiding groove 141 matches the raw material 20 to improve the guiding ability and ensure that the raw material 20 is smoothly transported to the feeding assembly 150.

[0046] In one embodiment, the feeding assembly 150 includes a mounting seat, a first rolling member 151 and a second rolling member 152, the mounting seat is arranged above the melting furnace 210, the first rolling member 151 and the second rolling member 152 are rotatably arranged on the mounting seat and are arranged in a spaced manner. The material guiding member 140 can guide the raw material 20 to be transported between the first rolling member 151 and the second rolling member 152, and the first rolling member 151 and the second rolling member 152 can clamp the raw material 20 and transport the raw material 20 at a first conveying speed in the process of rotation. Optionally, the first rolling member 151 and the second rolling member 152 are rollers or conveying rollers.

[0047] In the first embodiment, the feeding assembly 150 further includes a feeding driving member, the feeding driving member is connected with the first rolling member 151 and / or the second rolling member 152 to drive the first rolling member 151 and / or the second rolling member 152 to rotate, so that the first rolling member 151 and the second rolling member 152 transport the raw material 20 at the first conveying speed in the process of rotation.

[0048] It should be noted that the feeding driving member is a motor. When the feeding driving member is connected with the first rolling member 151 and the second rolling member 152 at the same time, the conveying belt can be connected with the two rolling members at the same time to drive the two rolling members to rotate at the same speed and in opposite directions; when the feeding driving member is connected with one of the rolling members, the other rolling member is a follower.

[0049] It needs to be explained that, since the first rolling member 151 and the second rolling member 152 can cooperate to clamp the raw material 20, in order to ensure that the raw material 20 can be conveyed under the action of the rolling member while being clamped; if the hardness of the raw material 20 is relatively high, a flexible layer can be arranged on the surface of the rolling member; if the hardness of the raw material 20 is relatively low, the surface of the rolling member can be provided with a hard layer. At the same time, in order to avoid slipping between the raw material 20 and the rolling member, the surface of the rolling member can be rough or can also be provided with a non-slip layer. The flexible layer and the non-slip layer can be the same layer, which is not limited here.

[0050] In the second embodiment, the feeding assembly 150 further comprises a damping structure arranged on the first rolling member 151 and / or the second rolling member 152 to provide damping during rotation of the first rolling member 151 and / or the second rolling member 152, so as to limit the rotation speed of the first rolling member 151 and / or the second rolling member 152. In this way, when the raw material 20 enters between the first rolling member 151 and the second rolling member 152 and is clamped, the rotation speed of at least one of the first rolling member 151 and the second rolling member 152 is limited, so as to slow down the conveying speed of the raw material 20.

[0051] The above embodiments are the structures of the feeding device, and the following describes other structures in the powder making equipment 10:

[0052] Please refer to Figure 1 and Figure 3 In one embodiment, the molten material furnace 210 comprises a furnace body 211 and a furnace cover 212, the furnace cover 212 is arranged on the top of the furnace body 211, and the furnace cover 212 is provided with a feeding port 2121 for feeding the raw material 20, and the feeding port 2121 is located below the feeding assembly 150. In this way, the molten liquid can be further prevented from splashing outside.

[0053] In one embodiment, the powder making equipment 10 further comprises a liquid level detector arranged on the molten material furnace 210 for detecting the liquid level height of the molten liquid in the molten material furnace 210. When the liquid level height is lower than the preset liquid level, the feeding device continuously conveys the raw material 20 to the molten material furnace 210 for melting; after the liquid level height reaches the preset liquid level, the feeding device stops conveying the raw material 20, i.e. the lifting assembly 120, the pushing assembly 130 and the feeding assembly 150 stop conveying the raw material 20.

[0054] In actual application, the liquid level detector comprises a floating ball structure 213, a high liquid level sensor 214 and a low liquid level sensor 215. The high liquid level sensor 214 and the low liquid level sensor 215 are arranged outside the molten material furnace 210 and located on the furnace cover 212. One end of the floating ball structure 213 is located inside the furnace body 211 and floats on the surface of the molten liquid. The other end of the floating ball structure 213 extends above the furnace cover 212 and can trigger the liquid level sensor during the change of the liquid level of the molten liquid, so as to detect the high liquid level and the low liquid level in the molten material furnace 210. When the high liquid level sensor 214 is triggered, it indicates that the liquid level reaches the preset liquid level, and the feeding device stops working. When the low liquid level sensor 215 is triggered, it indicates that the molten liquid in the molten material furnace 210 is less, and the feeding device starts working.

[0055] Referring to Figure 1 In one embodiment, the powder making device 10 further comprises a calcination furnace 220 and a collecting device. The calcination furnace 220 is arranged downstream of the molten material furnace 210 and is used for calcining the molten liquid to generate tail gas and powder. The powder is discharged from the calcination furnace 220 together with the tail gas. The collecting device is arranged downstream of the calcination furnace 220. The tail gas and the powder generated by the calcination furnace 220 are transported to the collecting device. The collecting device can collect the powder generated by the calcination furnace 220.

[0056] Further, the collecting device comprises a cyclone separator 230 and a filter collector 240. The cyclone separator 230 is arranged downstream of the calcination furnace 220 and is used for cooling and cyclone separating the tail gas and the powder. The filter collector 240 is arranged downstream of the cyclone separator 230. The cyclone separator 230 can separate the powder into finished powder and semi-finished powder. The semi-finished powder is directly discharged through a semi-finished powder outlet at the bottom of the cyclone separator 230. The finished powder and the tail gas are output from the top to the filter collector 240 downstream. The filter collector 240 can collect the finished powder.

[0057] In actual application, the collecting device further comprises an exhaust fan 250. The exhaust fan 250 is arranged downstream of the filter collector 240 and is used for discharging the tail gas.

[0058] In order to facilitate understanding of the technical solutions of the present application, the following Figure 1 The process flow of the powder making device 10 in the above embodiment is described as follows:

[0059] The raw material 20 is placed on the tray 123 at the upper feeding position, the lifting driver 121 drives the tray 123 to rise through the transmission chain, and the raw material 20 is lifted to the discharging position. Then the pushing driver 131 drives the pushing plate 132 to move to the right, and the raw material 20 is pushed into the guide groove 141, and then the pushing plate 132 is reset. The raw material 20 slides along the guide groove 141 under the action of gravity to the first rolling element 151 and the second rolling element 152, and slowly falls into the melting furnace 210 under the action of the first rolling element 151 and the second rolling element 152.

[0060] The raw material 20 is first melted into molten liquid in the melting furnace 210, and then flows into the firing furnace 220 for firing. The tail gas containing powder generated by firing enters the cyclone separator 230 under the action of the exhaust fan 250. The cyclone separator 230 separates the powder with a particle size greater than the preset particle size from the powder with a particle size less than or equal to the preset particle size, and discharges the powder with a particle size greater than the preset particle size through the semi-finished product discharge port. The powder with a particle size less than or equal to the preset particle size enters the filter collector 240 with the tail gas. The filter collector 240 intercepts the powder meeting the requirements and discharges it through the finished product discharge port at the bottom. The remaining tail gas and the powder with too small a particle size are output from the bottom to the exhaust fan 250 and discharged through the exhaust fan 250.

[0061] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A feeding device, characterized in that, The application relates to a feeding device for a melting furnace. The feeding device comprises a rack, a lifting assembly arranged on the rack and used for lifting raw materials to a discharging position, a pushing assembly arranged on the rack and used for pushing the raw materials lifted by the lifting assembly to the discharging position, a guide member with one end extending to the discharging position and the other end extending above the melting furnace, and a feeding assembly arranged above the melting furnace and corresponding to the end of the guide member away from the pushing assembly, so that the guide member can guide the raw materials to the feeding assembly and the feeding assembly can feed the raw materials into the melting furnace at a first feeding speed. The raw materials enter the feeding assembly at a second feeding speed, and the first feeding speed is smaller than the second feeding speed. The feeding assembly comprises a mounting base arranged above the melting furnace, and first and second rolling members rotatably arranged on the mounting base and spaced apart. The guide member can guide the raw materials to the space between the first and second rolling members, and the first and second rolling members can clamp the raw materials and feed the raw materials at the first feeding speed during rotation. The feeding assembly further comprises a feeding driving member connected with the first and / or second rolling members. The feeding assembly further comprises a damping structure arranged on the first and / or second rolling members to provide damping during rotation of the first and / or second rolling members.

2. The feeding device according to claim 1, characterized in that The lifting assembly comprises a lifting driving member and a transmission module both arranged on the rack, and a supporting plate connected with the supporting plate through the transmission module to drive the supporting plate to move relative to the rack. The lifting assembly comprises a plurality of supporting plates arranged on the transmission module and spaced apart, each of the supporting plates can move along a preset path, and the supporting plates can pass through the discharging position in sequence during movement along the preset path.

3. The feeding device according to claim 2, characterized in that The pushing assembly comprises a pushing driving member arranged on the rack and connected with a pushing plate to drive the pushing plate to move relative to the rack, and the pushing plate can push the raw materials lifted by the lifting assembly to the discharging position during movement.

4. The feeding device according to claim 2, wherein The guide member is provided with a guide groove with an inlet end facing the discharging position to receive the raw materials pushed out by the pushing assembly, and an outlet end facing the feeding assembly, and the height of the guide groove gradually decreases from the inlet end to the outlet end.

5. The feeding device according to claim 1, characterized in that, The application further relates to a melting furnace and the feeding device.

6. The feeding device according to claim 5, characterized in that The application further relates to a firing furnace arranged downstream of the melting furnace and a collecting device connected with the firing furnace and used for collecting powder generated during firing.

7. The feeding device according to claim 1, wherein ​ 8. The loading device of claim 1, wherein, ​ 9. A pulverizing apparatus characterized by comprising: ​ 10. The pulverizing apparatus according to claim 9, wherein ​

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