KR20240052431A - ball mill - Google Patents

Abstract

The present invention relates to a grinding ball mill. More specifically, the present invention relates to a grinding ball mill, which significantly lowers the manufacturing cost by enabling fine pulverization of materials through strong friction force through a grinding module with an inexpensive radial bearing structure, and in particular, selective gripping of the grinding module. This relates to a grinding ball mill that not only guarantees excellent grinding performance through strong friction by enabling fixation, but also improves ease of maintenance by enabling easy replacement of grinding modules.

Description

Grinding ball mill {ball mill}

The present invention relates to a grinding ball mill. More specifically, the present invention relates to a grinding ball mill, which significantly lowers the manufacturing cost by enabling fine pulverization of materials through strong friction force through a grinding module with an inexpensive radial bearing structure, and in particular, selective gripping of the grinding module. This relates to a grinding ball mill that not only guarantees excellent grinding performance through strong friction by enabling fixation, but also improves ease of maintenance by enabling easy replacement of grinding modules.

Ball mills, a type of powder manufacturing equipment, are representative and widely used to manufacture powders used in various engineering fields such as food engineering and materials engineering.

This type of ball mill is a method of crushing materials by the impact of small balls contained in the crushing container falling from a high place to a low place when the cylindrical crushing container rotates around an eccentric horizontal rotation axis. In general, the crushing force is weak, so the crushing force is weak. It had the disadvantage of being inefficient, such as taking a long time and grinding size being limited to micro units.

Therefore, a planetary ball mill has been developed that provides improved functionality by shortening the grinding time and reducing the grinding particle size by grinding with higher impact energy than a typical ball mill device.

Unlike regular ball mills, planetary ball mills grind while revolving and rotating at the same time, so they can perform wet grinding as well as dry grinding. They can achieve higher grinding efficiency than regular ball mills, so they are widely used in materials research institutes, etc.

However, the planetary ball mill has limitations in particle size formation during dry grinding, and in addition, there is a problem in that the material sticks to the inner wall of the grinding vessel during grinding and hardens. And the high heat generated by collision during grinding had a negative effect on the material, causing various problems in the final grind or mixture.

In addition, it is difficult to immediately separate the grinding vessel from the ball mill device due to thermal expansion of the grinding vessel after grinding, so there is a problem of having to wait until the grinding vessel cools before separating the grinding vessel to collect a sample.

Additionally, there is a problem in that materials with high viscosity cannot be pulverized. This is because the viscous material sticks to the inner wall of the grinding container and rotates, so the grinding effect does not occur.

Registered Patent 10-1852690

The present invention was created to solve the above-mentioned problems in the prior art. Not only does it enable both dry and wet grinding, but it also prevents heat damage to surrounding structures and powders by suppressing the heat inevitably generated during the grinding process. In addition, the manufacturing cost is significantly lowered by enabling the pulverization of materials through strong friction through an inexpensive radial bearing structure grinding module. In particular, the selective gripping and fixation of the grinding module is enabled, resulting in excellent grinding performance through strong friction. The purpose is to provide a grinding ball mill that not only guarantees, but also improves ease of maintenance by enabling easy replacement of the grinding module.

The present invention is a means for achieving the above object, comprising: a drum having a grinding space formed therein; a grinding shaft interpolated into the grinding space and installed to rotate in place; A driver that rotates the grinding shaft; a plurality of grinding modules coupled along the axial direction to the outside of the grinding shaft; and a clamping member installed on the drum and selectively holding and fixing a plurality of grinding modules coupled to the grinding shaft.

In addition, each of the plurality of grinding modules includes a ring-shaped inner housing coupled to the outer circumferential surface of the grinding shaft and having an internal receiving groove recessed in the outer circumferential surface; An outer housing that has a ring shape and is positioned to accommodate the inner housing inside, and has an external receiving groove recessed on its inner circumferential surface; and a plurality of grinding balls interposed between the inner and outer receiving grooves and rolling between the inner housing and the outer housing.

In addition, the clamping member is characterized in that it compresses the outside of the outer housing so that when the grinding shaft rotates, the position is fixed without being linked to the rotation of the inner housing.

In addition, in the drum, a plurality of fastening holes are formed penetrating at equal intervals toward the grinding space along the circumferential direction of the drum, and a plurality of operating grooves are recessed in corresponding positions of each fastening hole on the inner side of the drum. do.

In addition, the clamping member includes a plurality of operating bars that are inserted into each of the plurality of operating grooves and selectively contact the outside of the external housing; and a plurality of fastening means fastened to each of the fastening holes, the ends of which are in contact with the operating bar, and which allow the operating bar to move in the radial direction of the drum according to the fastening depth.

In addition, each of the plurality of fastening means is characterized in that it includes a fastening pin that is movably inserted along the longitudinal direction of the fastening hole and contacts the operating bar when exposed to the operating groove.

In addition, each of the plurality of fastening means further includes a fastening bolt that extends to the fastening pin and is screwed into the fastening hole to fix the fastening pin in position.

In addition, when the fastening pin moves in the direction discharged from the operating groove, the restraint of the operating bar is released, allowing the operating bar to be spaced apart from the external housing.

In addition, the surface facing the fastening means of the operating bar is characterized in that a fixing groove is formed recessed into which the end of the fastening pin is inserted and fixed.

In addition, the drum is characterized in that a cooling passage through which cooling fluid moves around the grinding space is formed.

The present invention not only enables both dry and wet grinding, but also prevents thermal damage to surrounding structures and powders by suppressing the heat inevitably generated during the grinding process, and also provides strong friction through a grinding module with an inexpensive radial bearing structure. This significantly lowers the manufacturing cost by enabling the fine differentiation of materials. In particular, it not only ensures excellent grinding performance through strong friction by enabling selective gripping and fixation of the grinding module, but also enables easy replacement of the grinding module. It provides the advantageous effect of improving the ease of maintenance.

1 is a view showing the overall cross-sectional configuration of a pulverizing ball mill according to the present invention.
Figure 2 is an enlarged view showing the main configuration of Figure 1.
Figure 3 is a view showing the exploded configuration of the main parts of the pulverizing ball mill according to the present invention.
Figure 4 is a view showing the exploded configuration of the grinding module and the separation plate.
Figure 5 is a diagram showing a cross-sectional configuration based on line AA shown in Figure 2.
FIG. 6 is a diagram individually illustrating the drum shown in FIG. 5.
Figure 7 is a view showing a state in which the operating bar is spaced apart from the grinding module.
Figures 8 and 9 are diagrams showing the cross-sectional configuration of the grinding module.
FIG. 10 is a diagram schematically showing a cross-sectional configuration based on line AA shown in FIG. 7.
Figure 11 is a view showing a pulverizing ball mill combined with a reactive agent injection unit.
Figures 12 and 13 are enlarged views showing the main configuration of Figure 11.
FIG. 14 is an enlarged view showing the main configuration of FIG. 13.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those with average knowledge in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that identical members in each drawing may be indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the present invention are omitted.

The ball mill according to the present invention is a device that grinds grinding materials (hereinafter referred to as raw materials) to produce powder with a particle size of several micrometers, and includes a drum 10, a grinding shaft 20, an actuator 30, and a grinding machine. It may be defined as including a module 40 and a clamping member 60.

First, the drum 10 has a cylindrical structure with a grinding space 11 formed inside, and the grinding space 11 can also be exemplified as a cylindrical space inside the drum 10.

In the grinding space 11, components such as the grinding shaft 20, grinding module 40, clamping member 60, and separation plate 45, which will be described later, can be accommodated in the right place, and at the same time, raw materials are supplied as described above. Pulverization can be achieved through the linking action of the components.

Raw materials may be injected into one side of the grinding space 11. For this purpose, a raw material injection unit 80 that injects raw materials toward the grinding space 11 may be coupled to one end of the drum 10.

The raw material injected into one end of the grinding space 11 can be moved to the other side of the grinding space 11 and discharged to the outside at the same time as grinding by the rotational action of the grinding shaft 20 and the grinding module 40, which will be described later. there is.

A plurality of fastening holes 12 may be formed through the drum 10 at equal intervals toward the grinding space 11 along the circumferential direction of the drum 10.

For example, the fastening holes 12 are formed in a radial direction perpendicular to the axial direction of the drum 10 while being rotated at equal intervals with the grinding space 11 in the center of the drum 10 as the center. ) may be composed of a structure that penetrates.

Some sections of each fastening hole 12 may be in the form of female threads having threads.

The fastening means 62 or the reactive agent injection part 90 of the clamping member 60, which will be described later, may be coupled or connected to the fastening hole 12.

A cooling passage 14 through which cooling fluid moves around the grinding space 11 may be formed in the drum 10, and the cooling passage 14 is formed in the drum 10 in a line that avoids the fastening hole 12. can be appropriately formed inside.

A cooling unit (not separately shown) is connected to the cooling passage 14 to circulate cooling water to the drum 10 to appropriately cool the heat generated during grinding of the raw materials in the grinding space 11.

On the inner surface of the drum 10, a plurality of operating grooves 13 may be recessed at corresponding locations of each fastening hole 12.

Each operating groove 13 may be exemplified in the form of a groove of a certain depth extending long along the axial direction of the drum 10. Accordingly, a plurality of operating grooves 13 are expanded around the grinding space 11. A structure is formed to form a single channel.

Each operating groove 13 is rotated and arranged at equal intervals centered on the grinding space 11 in the center of the drum 10 to follow the arrangement of the fastening holes 12, so that each fastening hole 12 is aligned with each other on the same line. Allow it to communicate.

The operating bar 61 of the clamping member 60, which will be described later, can be inserted into each operating groove 13.

Next, the grinding shaft 20 is interpolated into the grinding space 11 and has a structure installed so that it can rotate in place, the other end is coupled with the driver 30 to be described later, and one end is directed toward one end of the grinding space 11. It is arranged to form a free end.

Next, the driver 30 is responsible for rotating the grinding shaft 20, and is coupled to the other side of the drum 10, arranged in line with the drum 10, and extending to the other side of the drum 10. The other end of the shaft 20 can be accommodated to rotate the crushing shaft 20.

The driver 30 is a structure that includes a known structure capable of rotationally driving the pulverizing shaft 20, for example, a motor, a reducer, etc., and detailed description thereof will be omitted below.

Next, the grinding module 40 is configured to grind the raw materials supplied to the grinding space 11 while rotating according to the rotational drive of the grinding shaft 20. In particular, the grinding module 40 is configured to grind the raw materials by cutting them with a sharp blade, etc. Its characteristic is that it applies a strong frictional force to the raw material, allowing the raw material to be formed into a powder with a fine particle size.

For this purpose, the grinding module 40 has a structure in which a plurality of grinding modules 40 are sequentially coupled along the axial direction to the outside of the grinding shaft 20. At this time, each grinding module 40 is largely divided into an inner housing 41 and an outer housing. (42) and crushing balls (43).

More specifically, the inner housing 41 has a ring shape, is coupled to the outer peripheral surface of the grinding shaft 20, and has a structure in which an internal receiving groove 41a is recessed on the outer peripheral surface.

The inner diameter of the inner housing (41) is made to be the same as the diameter of the grinding shaft (20), so that the inner housing (41) is fitted on the grinding shaft (20) and interlocks with it when the grinding shaft (20) rotates. Allow rotation to occur.

The inner receiving groove 41a is recessed along the circumferential direction of the inner housing 41, and an inward portion of the plurality of grinding balls 43 can be rolled and accommodated in this inner receiving groove 41a.

Next, the outer housing 42 may be formed in a ring shape like the above-described inner housing 41, and is positioned to receive the inner housing 41 inside, and an external receiving groove 42a is recessed on the inner circumferential surface. It consists of a structure.

The external receiving groove (42a) is recessed along the circumferential direction of the external housing (42), and the external receiving groove (42a) contains the outer portion of the plurality of grinding balls (43) that are not accommodated in the internal receiving groove (41a). cloud can possibly be accommodated.

The inner diameter of the outer housing 42 is formed to be larger than the outer diameter of the inner housing 41, so that it can be spaced apart in the outward direction on the concentric circle of the inner housing 41, and the inner housing 41 and the outer housing 42 are spaced apart from each other. The crushing balls 43 are interposed between them to provide a structure in which the outer housing 42, the inner housing 41, and the crushing balls 43 are each relatively slippable.

At this time, the outer diameter of the external housing 42 is relatively smaller than the inner diameter of the grinding space 11, so that it can be spaced at a certain distance from the inner surface of the drum 10, so that the pulverized powder flowing out from the grinding module 40 is Make sure to secure a moving space (15) where you can move.

In the case of the inner housing 41, it is provided to be rotatably driven in conjunction with the grinding shaft 20, while the outer housing 42 is fixed in position by a clamping member 60, which will be described later, even if the grinding shaft 20 rotates. Ensure that the position is fixed in the grinding space (11).

The crushing balls 43 are interposed between the internal receiving groove 41a and the external receiving groove 42a and are rolled between the inner housing 41 and the outer housing 42, and are formed between the inner housing 41 and the outer housing ( The crushing balls 43 interposed between 42) serve to support the outer housing 42 and the inner housing 41 at a certain interval so that they can be rotated relative to each other, and also form the internal receiving groove 41a to the external receiving groove 42a. It performs the role of pulverizing the raw materials by applying shear or compression force due to friction to the raw materials introduced into the .

A plurality of grinding balls 43 may be arranged along the circumferential direction, and the raw material flows into the finely spaced space between the grinding balls 43 and the internal receiving groove 41a and the external receiving groove 42a, As the grinding shaft 20 is rotated and the inner housing 41 rotates along with it, the raw materials interposed between the inner housing 41, the outer housing 42, and the grinding balls 43 may be pulverized.

At this time, the outer diameter of the inner housing 41 is formed to be smaller than the inner diameter of the outer housing 42, so the outer housing 42 and the inner housing 41 can be configured to be spaced apart from each other at a certain distance, and accordingly, the grinding module ( On one side and the other side of 40), opening portions 44 in the form of a closed ring are opened in the direction toward the crushing balls 43, so that raw materials can be drawn out toward the crushing balls 43.

For example, the raw material introduced through the opening 44 on one side may be pulverized inside the grinding module 40 and then discharged to the outside of the grinding module 40 through the opening 44 on the other side.

At this time, the openings 44 of each of the plurality of grinding modules 40 are provided on the same line so that the raw material that has passed through one grinding module 40 can be repeatedly transferred to the adjacent grinding module 40. This enables serial grinding of raw materials.

That is, the raw material supplied to one side of the grinding space 11 may be pulverized into powder while passing in line through a plurality of grinding modules 40 coupled to the outside of the grinding shaft 20.

Meanwhile, a spacer plate 45 is interposed between each adjacent grinding module 40, so that the adjacent grinding modules 40 can be spaced apart at a certain distance.

At this time, each of the plurality of spacing plates 45 is in the form of a circular thin plate and has a structure in which a shaft coupling hole 45a is formed through the center so that it can be coupled to the outside of the grinding shaft 20. In particular, the spacing plates 45 ) is made to be the same as the outer diameter of the inner housing (41) so that the spacer plate (45) does not block the opening (44).

If a portion of the spacer plate 45 blocks the opening portion 44, the movement of raw materials to the opening portion 44 may not be smooth, resulting in a problem of deterioration of the fluidity of the raw materials.

In addition, the separation plate 45 seals the space between the inner housings 41 of adjacent grinding modules 40 to prevent the raw materials discharged from the grinding module 40 from sticking to the fine area facing the grinding axis 20. do.

A separation space 46 equal to the thickness of the separation plate 45 can be formed between adjacent crushing modules 40 by the separation plate 45, and the raw material being crushed moves into the separation space 46, and also , so that the pulverized powder can be smoothly discharged from the pulverizing module 40 toward the moving space 15.

That is, among the raw materials being pulverized passing through each grinding module 40, powder having an appropriate particle size that can be discharged into the separation space 46 is discharged into the movement space 15 through the separation space 46. , the remaining raw materials continuously pass through the plurality of grinding modules 40, go through the grinding process again, and move toward the other side of the grinding space 11, and when they reach an appropriate particle size, they move through the surrounding separation space 46. It can be discharged to (15) or moved to the other end of the drum (10) and discharged directly to the discharge port (51).

The discharge port 51 may be formed as a branch at the other end of the drum 10 or may be provided separately on the discharge cylinder 50 interposed between the drum 10 and the actuator 30.

The powder discharged into the moving space 15 moves to the other side of the drum 10 through the pressure applied from the raw material injection unit 80, or is inserted into the drum 10 or discharge cylinder 50 with a separate suction device (not shown). By installing a connection, the powder can be recovered.

In addition, the separation plate 45 prevents the generation of frictional heat during rotation by preventing adjacent grinding modules 40 from interfering with each other, and the separation space 46 formed by the separation plate 45 allows the pulverized powder to be stored in the space 46. In addition, it can be used as a passage to discharge the heat generated during the grinding process, preventing overheating of the grinding module 40 and further preventing deterioration due to thermal deformation of the powder to ensure sufficient marketability.

In particular, each space 46 is formed in a straight direction perpendicular to the axial direction of the grinding shaft 20, so that it has a structure capable of maximizing the discharge efficiency of powder and hot air.

Meanwhile, at one end of the grinding space 11, a supply space is formed having an inner diameter smaller than the inner diameter of the grinding space 11. Accordingly, the grinding space 11 and the supply space are formed at the boundary point between the grinding space 11 and the supply space. A step may be formed due to the difference in inner diameter.

At this time, the most advanced crushing module 40 coupled to the crushing shaft 20 may be supported in contact with the step, and the opening portion 44 of the crushing module 40 is provided in the supply space so as not to be shielded by the step. It is desirable that the inner diameter is formed to be the same as the inner diameter of the external housing 42.

As a result, the external housing 42 of the crushing module 40 coupled to the most end is supported on the step, while the opening portion 44 is exposed as is, and therefore, the crushing module 40 is provided in the supply space. ) is exposed as is, so when raw materials are supplied through the raw material injection unit 80, the raw materials supplied to the supply space intuitively flow into the opening portion 44 without any particular resistance, thereby ensuring a smooth supply of raw materials. It can be done.

Meanwhile, in order to further improve grinding efficiency, grinding beads with a smaller diameter than the grinding balls 43 can be inserted between the inner housing 41 and the outer housing 42.

At this time, the grinding beads can be interposed in the opening 44 between the outer housing 42 and the inner housing 41 to prevent direct overlap with the grinding balls 43, and when the inner housing 41 rotates, While mixing with the raw materials within the opening area 44, the raw materials are pulverized by applying physical impact to the raw materials.

In other words, the grinding beads can perform an auxiliary grinding role to properly dissociate the raw materials immediately before grinding by the grinding balls 43.

In addition, the grinding beads allow grinding to always occur inside the grinding module 40, even if the raw material does not reach the grinding balls 43, thereby maximizing grinding efficiency.

The grinding beads have a smaller diameter than the grinding balls (43), but are made to be in the form of a sphere with a diameter larger than the spacing of the spacing space (46) so that they are not discharged into the spacing space (46), so that they can be formed into a moving space (along with the powder). 15) A structure is installed to prevent arbitrary discharge.

Next, the clamping member 60 is installed on the drum 10 and plays the role of selectively holding and fixing a plurality of grinding modules 40 coupled to the grinding shaft 20.

When the clamping member 60 holds and secures the outside of each grinding module 40, the clamping member 60 has a structure that presses the outer surface of the external housing 42 of the grinding module 40. At this time, the outer housing Since (42) and the inner housing (41) are individual structures spaced apart from each other at a certain distance, the outer housing (42) is not linked to the rotation of the inner housing (41) when the grinding shaft (20) rotates, but is fixed in position. On the other hand, the inner housing 41 rotates in conjunction with the grinding shaft 20 to grind the raw materials in the grinding module 40.

In order to grind raw materials, at least one of the inner housing 41 and the outer housing 42 must be fixed. Accordingly, in this embodiment, a structure is used to selectively fix the outer housing 42 through the clamping member 60. Adopted.

In this way, if the inner housing 41 or the outer housing 42 is not properly fixed, the grinding efficiency is extremely reduced due to a phenomenon in which they rotate around each other.

In order to fix the external housing (42), a method of matching the inner diameter of the grinding space (11) with the outer diameter of the outer housing (42) so that the grinding module (40) is combined by interference fit within the grinding space (11) can also be considered. However, in this case, a problem arises in which it becomes very difficult to attach and detach the grinding module 40 for maintenance, as well as the cost of design and processing to reduce the tolerance between the external housing 42 and the drum 10. There is also a problem that is rapidly increasing.

Accordingly, the clamping member 60 allows the external housing 42 of the grinding module 40 to be stably fixed during the grinding operation, but the gripping force of the fixed external housing 42 is reduced when the grinding module 40 is replaced. is released to enable easy separation of the grinding module 40 from the grinding shaft 20.

To this end, the clamping member 60 may be largely illustrated as including an operating bar 61 and a fastening means 62.

The operating bar 61 has a long, elongated rod-like structure and can selectively contact the outside of the external housing 42 while being inserted into each of the plurality of operating grooves 13.

Each operating bar 61 has a cross-sectional structure curved in an arc shape so as to make uniform contact with the outer surface of the circular outer housing 42.

The operating bar 61 can freely move in the radial direction perpendicular to the axial direction of the drum 10 within the operating groove 13, but is pressed and fixed toward the external housing 42 by the fastening means 62 during the crushing operation. This can be done.

On the surface of the operating bar 61 in contact with the external housing 42, a movable slit 61a of a certain depth may be long and recessed along the axial direction. Accordingly, the operating bar 61 is connected to the external housing 42. Even when in contact with the pulverizing module 40, a structure is provided in which the powder flowing out from the grinding module 40 can move smoothly toward the other side of the drum 10 through the moving slit 61a.

The fastening means 62 is a component for fixing the operating bar 61 and is fastened to each fastening hole 12, and the end portion can be selectively contacted with the operating bar 61.

That is, depending on the fastening depth of the fastening means 62 within the fastening hole 12, the operating bar 61 is freely moved in the radial direction of the drum 10 or is pressed and fixed toward the external housing 42. Redemption can be achieved.

The fastening means 62 is composed of a plurality of fastening means so that they can be fastened to each fastening hole 12. At this time, the reactive agent injection unit 90 is connected to at least one fastening hole 12 to crush the drum 10. Allows the reactive agent to be injected into the space (11).

The fastening means 62 is, for example, movably inserted along the longitudinal direction of the fastening hole 12 and includes a fastening pin 62a that contacts the operating bar 61 when exposed to the operating groove 13, and the fastening pin 62a. ) and may be illustrated as including a fastening bolt (62b) that is extended and fastened to the fastening hole (12) by screwing to fix the position of the fastening pin (62a).

The fastening pin (62a) and the fastening bolt (62b) may be individually configured, or may be formed as one piece and move back and forth along the fastening hole (12).

When the fastening pin (62a) moves in the direction of the operating groove (13) and the end is exposed toward the operating groove (13), the end of the fastening pin (62a) exposed to the operating groove (13) comes into contact with the operating bar (61). Accordingly, the operating bar 61 is pushed toward the external housing 42 and is pressed against the outer surface of the external housing 42, thereby fixing the external housing 42.

On the other hand, when the fastening pin (62a) moves in the direction in which the fastening pin (62a) is discharged from the operating groove (13), for example, the fastening pin (62a) moves away from the operating groove (13), the fastening pin (62a) is separated from the operating bar (61). Thus, the restraint of the operating bar 61 is released, and thus, a structure in which the operating bar 61 can be freely spaced from the external housing 42 is provided.

Therefore, when replacing the grinding module 40, the grinding module 40 can be easily attached and detached from the grinding shaft 20 without the need to completely disassemble the grinding shaft 20.

A fixing groove (61b) is formed to be recessed on the surface facing the fastening means (62) of the operating bar (61) so that when the fastening pin (62a) presses the operating bar (61), the fastening pin (62a) The end can be inserted into and fixed in the fixing groove 61b, so that eccentric movement of the operating bar 61 can be effectively suppressed even when vibration due to high-speed rotation of the grinding shaft 20 and grinding is applied.

Meanwhile, the ball mill according to the present invention enables the production of higher quality powder by reacting the raw material with a reactive agent during the grinding process.

It is common for the reactive agent to be processed in a separate line after going through the pulverization process. As a result, the powder manufacturing process becomes complicated, and there is a problem of increasing the manufacturing cost due to the provision of additional equipment. However, in this embodiment, the pulverization and reactive agent are processed. It was designed to have a more effective structure that can carry out reactions simultaneously.

In this description, a reactive agent is a means to improve physical properties by causing a chemical reaction in the raw materials, and may vary depending on the type of raw materials, the purpose of use of the powder, etc., and for wet grinding purposes, it can be replaced by a lubricant to play a lubricating role. It is not particularly limited, and it is stated that various things can be used.

More specifically, a connection tip 17 is formed at one end of the drum 10 extending a certain length, and a branch pipe 70 may be coupled to the connection tip 17.

In addition, the ball mill according to the present invention is connected to the branch pipe 70 and includes a raw material injection part 80 for injecting the raw material to be pulverized toward the branch pipe 70, and at least one of the branch pipe 70 and the drum 10. It may be exemplified as further including a reactive agent injection unit 90 connected to the above for injecting a reactive agent.

That is, the raw material injection unit 80 and the reactive agent injection unit 90 are respectively connected to the branch pipe 70 so that the raw material to be pulverized and the reactive agent can be injected toward the branch pipe 70.

First, the branch pipe 70 has a structure in which at least a first branch 71 and a second branch 72 are branched to both sides while connected to the connection tip 17.

At this time, the reactive agent injection unit 90 is connected to the first branch 71 to inject the reactive agent toward the branch pipe 70, and the raw material injection unit 80 is connected to the second branch 72 to It is possible to inject raw materials toward the organ 70.

Accordingly, inside the branch pipe 70, the reactive agent may be primarily reacted with the raw material before being injected into the drum 10. In this way, the raw material primarily reacted by the reactive agent within the branch pipe 70 Can be injected into the drum 10 through the connection tip 17.

At this time, the second branch 72 extends parallel to the connection tip 17 and the first branch 71 extends in a vertical direction of the second branch 72 so that the reactant passes through the branch pipe 70. Ensure that cross-injection is performed in a direction perpendicular to the injection path of the raw materials.

That is, since the reactive agent and the raw material injected into the branch pipe 70 may cross each other in the vertical direction and collide, the possibility of contact between the reactive agent and the raw material is significantly increased, and they are strongly dispersed within the branch pipe 70. A structure that increases mixing efficiency is provided.

In the attached drawing, the direction in which reactants and raw materials move is exemplarily shown through broken lines.

Meanwhile, the reactive agent injection unit 90 injects the reactive agent not only into the branch pipe 70 but also toward the grinding space 11 of the drum 10, so that the raw material and the reactive agent are exposed to each other even during the grinding process. .

That is, the reactive agent injection unit 90 in this embodiment is preferably connected to the branch pipe 70 and the drum 10 at the same time so that the reactive agent can be individually injected.

For this purpose, the reactive agent injection unit 90 can be largely illustrated as including a first reactive agent pipe 91, a first nozzle 92, a second reactive agent pipe 93, and a second nozzle 94. there is.

First, the first reactive agent pipe 91 is a pipe through which the reactive agent moves and may be directly connected to the first branch 71. The first nozzle 92 is coupled to the end of the first reactive agent pipe 91 directly connected to the first branch 71, so that the reactive agent moved to the first reactive agent pipe 91 is transferred to the inside of the branch pipe 70. It can be injected.

The second reactive agent pipe 93 is a pipe through which the reactive agent moves and may be piped toward any one of the plurality of fastening holes 12 to which the fastening means 62 is not fastened.

At this time, the first reactive agent pipe 91 and the second reactive agent pipe 93 may be connected to a reactive agent supply tank (not shown) to receive the reactive agent.

A second nozzle 94 inserted into the fastening hole 12 is coupled to the end of the second reactive agent pipe 93 to inject the reactive agent moved into the second reactive agent pipe 93 into the fastening hole 12. Allow it to flow into the grinding space (11).

At this time, the operation bar 61 is inserted into the operating groove 13 in communication with the fastening hole 12 and blocks the passage toward the grinding space 11, so that the reactive agent flows toward the grinding space 11. Since the injection may not be performed smoothly, at this time, an outlet port 61c is formed through the operating bar 61 on the same line as the fastening hole 12 to allow the reactive agent to pass through.

The outlet (61c) may be formed by replacing at least one of the plurality of fixing grooves (61b).

In particular, the operating bar 61 is in contact with the outside of the external housing 42, so when the reactive agent is injected into the fastening hole 12 from the second nozzle 94, the reactive agent is transferred to the operating bar through the outlet 61c. After passing through (61), it does not flow out into the surrounding movement space (15), but may flow into the separation space (46), which is the space between adjacent crushing modules (40).

Accordingly, rather than being mixed with the powder discharged to the moving space 15 after the reactive agent has been pulverized, it is mixed directly with the raw material supplied into the pulverizing module 40 before pulverization. Therefore, the pulverization of the raw material and the reactive agent A structure that allows the reaction to occur simultaneously is provided, and as a result, even if the configuration for separate mixing of the raw materials and reactive agents is excluded, the beneficial effect of more effective dispersion of the raw materials and reactive agents can be expected.

In particular, the reactive agent injection unit 90 injects the reactive agent toward the branch pipe 70 to initially react the reactive agent with a single raw material before pulverization, and then injects the reactive agent toward the drum 10 to perform the pulverization process. Since the structure allows the reactant to react secondarily with the raw materials, the possibility of contact between the raw materials and the reactive agent is greatly increased, and the advantageous effect of greatly improving reaction efficiency can be expected.

Next, since the raw material injection unit 80 can be implemented in various ways to inject raw materials toward the branch pipe 70, detailed description will be omitted below.

In summary, the ball mill according to the present invention significantly lowers the manufacturing cost by enabling fine pulverization of raw materials through strong friction force through the grinding module 40 of a radial bearing structure with a simple structure and low cost, even without a sharply refined blade. In addition, since the grinding module 40 itself is not structured to form a sharp blade, it ensures significantly improved durability compared to existing blades that wear out with repeated use, thereby reducing the cost required for various maintenance such as blade replacement. Provides the effect of excluding .

In addition, the grinding module 40 not only serves to grind raw materials but also serves as a bearing to stably rotate and support the grinding shaft 20, which is the center of rotation, thereby simplifying the structure.

In addition, it prevents the deterioration of raw materials due to heat during the grinding process, allows the raw materials to be more finely divided, and heat generation is appropriately eliminated not only when grinding dry raw materials but also wet raw materials, so the raw materials do not easily stick and grind smoothly. It provides an effect that allows this to happen.

The embodiments of the present invention described above are merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims. In addition, the present invention should be understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims.

10: drum
20: Grinding axis
30: actuator
40: Grinding module
50: Discharge cylinder
60: Clamping member

Claims (10)

A drum with a grinding space formed inside;
a grinding shaft interpolated into the grinding space and installed to rotate in place;
A driver that rotates the grinding shaft;
a plurality of grinding modules coupled along the axial direction to the outside of the grinding shaft; and
A grinding ball mill comprising a clamping member installed on the drum and selectively holding and fixing a plurality of grinding modules coupled to the grinding shaft. In claim 1,
Each of the plurality of grinding modules,
An inner housing in a ring shape, coupled to the outer peripheral surface of the grinding shaft and having an internal receiving groove recessed in the outer peripheral surface;
An outer housing that has a ring shape and is positioned to accommodate the inner housing inside, and has an external receiving groove recessed on its inner circumferential surface; and
A grinding ball mill comprising: a plurality of grinding balls interposed between the inner and outer receiving grooves and rolling between the inner housing and the outer housing. In claim 2,
The clamping member is a grinding ball mill characterized in that the clamping member compresses the outside of the outer housing so that when the grinding shaft rotates, the position is fixed without being linked to the rotation of the inner housing. In claim 2,
In the drum, a plurality of fastening holes are formed penetrating at equal intervals toward the grinding space along the circumferential direction of the drum, and a plurality of operating grooves are recessed in the inner surface of the drum at corresponding positions of each fastening hole. Ball mill. In claim 4,
The clamping member is,
a plurality of operating bars that are inserted into each of the plurality of operating grooves and selectively contact the outside of the external housing; and
A pulverizing ball mill comprising: a plurality of fastening means fastened to each of the fastening holes, the ends of which are in contact with the operating bar, and which allow the operating bar to move in the radial direction of the drum according to the fastening depth. In claim 5,
Each of the plurality of fastening means,
A pulverizing ball mill comprising a fastening pin that is movably inserted along the longitudinal direction of the fastening hole and contacts the operating bar when exposed to the operating groove. In claim 6,
Each of the plurality of fastening means,
A pulverizing ball mill further comprising a fastening bolt that extends to the fastening pin and is screwed into the fastening hole to fix the fastening pin. In claim 6,
A pulverizing ball mill, characterized in that when the fastening pin moves in the direction discharged from the operating groove, the restraint of the operating bar is released and the operating bar can be spaced apart from the external housing. In claim 6,
A pulverizing ball mill, characterized in that a fixing groove into which the end of the fastening pin is inserted and fixed is formed on the surface facing the fastening means of the operating bar. In claim 1,
A grinding ball mill, characterized in that a cooling passage through which cooling fluid moves around the grinding space is formed in the drum.