JP2002172342A - Large capacity vertical ball mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a large capacity vertical ball mill constituted so as to be capable of easily performing operation such as the charging of each and sand into a mill pot, the taking-out of finely divided matter or the like while having treatment capacity far larger as compared with conventional technique. SOLUTION: The ball mill comprises a base frame 10 for supporting a center shaft 1 in a freely rotatable manner and the pot support frame 20 for supporting a mill pot 30. The pot support frame 20 consists of upper and lower tables 21 and 25 and a cartridge 61 is fixed to the upper table 21 in a freely detachable manner, and an upper radial bearing 62 and an upper sleeve 63 are inserted in the cartridge 61. A lower radial bearing 72 is attached to the lower table 25 and a lower sleeve 73 is inserted into the lower radial bearing 72 and the upper and lower rotating shafts of the mill pot 30 are inserted into the upper sleeve 63 and the lower sleeve 73 in an axial direction in a freely separable manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a large capacity vertical ball mill. More specifically, the present invention primarily relates to PCB
It is used to detoxify soil contaminated with urea and dioxins and to pulverize a large amount of soil. Since the polluted soil is present in large quantities on the earth, it must be advanced with considerable efficiency. For example, a method for pulverizing about 50 kg or more of soil in one batch processing is a main object of the present invention. The present invention is used not only for fine pulverization of soil but also for pulverization of various objects, and is applicable to those having a processing amount of less than 50 kg.

[0002]

2. Description of the Related Art A pulverizing technique using a ball mill is already known.
No. 2 and the like. These ball mills are provided with 2 to 4 mill pots, rotate each mill pot, and rotate a table supporting each mill pot to rotate and revolve the mill pot. Also, a large number of steel balls are put in the mill pot, and the object to be ground crushes into fine powder by colliding with the steel balls in the mill pot. However, the conventional ball mill processes a very small amount of pulverized material. For example, the processing amount is 100 g or 1 g.
It is only about kg. For this reason, since the mill pot can be easily taken out and mounted with a small force, only an extremely simple mounting structure is used.

[0003]

When the amount of soil and the like to be processed by a ball mill becomes 50 kg or more, it cannot be easily handled by human power, and the work of putting the earth and sand into the mill pot and taking out the finely pulverized soil use mechanical force. Inevitably, this requires a mill pot mounting structure suitable for machine operation.

Accordingly, the present invention provides a large-capacity vertical ball mill capable of easily performing operations such as charging earth and sand into a mill pot and taking out finely pulverized materials while having a processing capacity much larger than that of the prior art. The purpose is to provide.

[0005]

According to a first aspect of the present invention, there is provided a large-capacity vertical ball mill comprising: a center shaft which is set upright; and a base frame which rotatably supports a lower portion below the center in the axial direction of the center shaft. A pot support frame attached to an upper portion above the axial center of the center axis, and a plurality of mill pots attached to the pot support frame at symmetrical positions about the center axis. The support frame is
An upper table attached to the upper end of the upper portion of the central shaft, and a lower table attached to the lower end, a cartridge is removably fixed to the upper table, and a radial bearing is provided in the cartridge. The upper sleeve is inserted into the radial bearing, the upper rotation shaft of the mill pot is inserted into the upper sleeve so as to be able to be inserted and removed in the axial direction, and the lower table is provided with a radial bearing. A lower sleeve is inserted into the radial bearing, and a lower rotation shaft of the mill pot is inserted in the lower sleeve so as to be able to be inserted and removed in the axial direction, and the outer diameter of the mill pot is smaller than the outer diameter of the cartridge. And In the large-capacity vertical ball mill according to claim 2, a fitting portion between the upper sleeve and the upper rotation shaft is formed to have a non-circular cross section, and a fitting portion between the lower sleeve and the lower rotation shaft has a non-circular cross section. The upper and lower sleeves and the mill pot are configured to rotate together. In the large-capacity vertical ball mill according to claim 3, in the invention according to claim 1, the lower end of the lower sleeve projects below the lower table, and the planetary gear is concentrically mounted on the lower end of the lower sleeve. The planetary gear is mounted, and the center of a base circle provided between the upper surface of the base frame and the lower surface of the lower table is meshed with a sun gear that is concentric with the central axis via a play gear. It is characterized by being. The large-capacity vertical ball mill according to claim 4 is characterized in that
In the invention described in the above, the mill pot is composed of an upper rotation shaft, a pot portion, and a lower rotation shaft, and the pot portion is vertically divided into two parts and is composed of a lid and a container, and the lid and the container are detachable. It is characterized by comprising.

According to the first aspect of the present invention, when the cartridge is removed from the upper table, a hole for passing the mill pot is formed in the upper table, so that the mill pot can be lifted upward by a crane or the like. For this reason, handling of the mill pot by the mechanical force of a crane or the like becomes possible. In this case, the upper radial bearing remains held between the cartridge and the upper sleeve, and the lower rotation shaft and the sleeve of the mill pot can be inserted and removed so that the radial bearing is left on the lower table side. Therefore, it is not necessary to disassemble and assemble the bearing every time the mill pot is taken out, so that workability is improved. According to the invention of claim 2, since the upper rotation shaft of the upper sleeve and the mill pot and the lower rotation shaft of the lower sleeve and the mill pot are fitted at the fitting portion having a non-circular cross section, they rotate together with each other, and It enables vertical insertion / removal while smooth rotation by power. Therefore, handling such as insertion and removal of the mill pot by mechanical force can be easily performed. According to the invention of claim 3, when the central axis rotates, the plurality of mill pots held on the upper and lower tables revolve, and the idle gear rotates by rolling around the sun gear, and the idle gear rotates by the idle gear. The planet gears are rotated, and the mill pot rotates. In this way, the mill pot revolves around its axis, but since this gear mechanism is provided at the lower end of the lower sleeve, it does not interfere with removal of the mill pot from above and insertion from above. Therefore, the mill pot can be easily handled. According to the invention of claim 4, the mill pot itself can be divided into upper and lower parts, and the mill pot taken out of the pot support frame can be divided into a container and a lid. Can be easily taken out.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 6 is a vertical sectional view of a large capacity vertical ball mill according to the embodiment of the present invention. As shown in FIG. 6, the ball mill according to the present embodiment includes a central shaft 1, a base frame 10, a pot support frame 20, a mill pot 30, and the like as main components.

First, the center axis 1 will be described. As shown in FIG. 6, the central axis 1 is arranged upright, and the lower part is referred to as a lower part 1A and the upper part is referred to as an upper part 1B from a substantially middle point in the axial direction. The lower portion 1A is a portion supported by the base frame 10 via a bearing described later. The upper portion 1B is provided with a pot support frame 20 described later.
Is a part for holding a mill pot 30 described later. A mechanism for rotating the central shaft 1 around the axis is a mill pot revolution mechanism 40 described later.

Next, the base frame 10 will be described.
As shown in FIG. 6, the lower portion 1A of the central shaft 1 is inserted into the base frame 10, and is rotatably supported by the base frame 10 via the lower bearing 11 and the upper bearing 15. The lower bearing 11 rotatably supports the lower end of the lower portion 1A of the center shaft 1, and the upper bearing 15 rotatably supports the upper end of the lower portion 1A of the center shaft 1. Therefore, the lower portion 1A inserted into the base frame 10 has its lower end and upper end supported by the lower bearing portion 11 and the upper bearing portion 15, respectively, so that the central shaft 1 stands vertically. It can rotate in the state of being.

Next, the pot support frame 20 will be described. As shown in FIG. 6, a pot support frame 20 is attached to an upper portion 1B of the central shaft 1. The pot support frame 20 includes an upper table 21 and a lower table 25 for rotatably supporting the upper and lower ends of the mill pot 30, respectively.

The upper table 21 is in the form of a horizontal disk, and has an upper boss 21b provided at the center thereof. The upper boss 21b of the upper table 21 is fitted to the upper end of the upper portion 1B of the central shaft 1, and is fixed to the upper portion 1B of the central shaft 1 by a key or the like. The lower table 25 is in the shape of a horizontal disk, and has a lower boss 25b provided at the center thereof. The lower boss 25b of the lower table 25 is fitted to the lower end of the upper portion 1B of the central shaft 1, and is fixed to the upper portion 1B of the central shaft 1 by a key or the like. Therefore, when the center shaft 1 is rotated around the axis, both the upper table 21 and the lower table 25 rotate in a horizontal plane.

The upper table 21 is formed with a plurality of cartridge mounting holes 21h penetrating the upper and lower surfaces thereof, and the lower table 25 is formed with a plurality of bearing mounting holes 25h. It will be described later.

The upper table 21 and the lower table 2
5, a plurality of connecting rods 28 are attached. By these connecting rods 28, the upper table 2
1 and the lower table 25 are supported so that the distance between them does not change. Since the plurality of connecting rods 28 are arranged at positions rotationally symmetric about the center axis 1, the upper table 21 and the lower table 25 can be uniformly supported.

Next, the mill pot 30 will be described. A plurality of mill pots 30 are mounted on the pot support frame 20 at positions that are rotationally symmetric about the central axis 1, which will be described in detail later.

Next, the mill pot revolution mechanism 40 will be described. As shown in FIG. 6, in the lower portion 1 </ b> A of the center shaft 1 inserted into the base frame 10,
A large-diameter bevel gear 41 having a large diameter is mounted horizontally and concentrically with the center shaft 1 at a lower end portion below the substantially middle position. This large-diameter bevel gear 41 is provided with bevel teeth on its lower surface.

The large-diameter bevel gear 41 has a large-diameter bevel gear 41.
A small-diameter bevel gear 43 having a smaller diameter is meshed.
The small-diameter bevel gear 43 is provided with bevel teeth on the tip end surface. At the center of the back surface of the small diameter bevel gear 43, the tip of the input shaft 42 is attached. This input shaft 42
The tip is horizontally and rotatably supported by the base frame 10. At the base end of the input shaft 42, a main shaft of a motor (not shown), which is a driving source, is attached.

For this reason, when the motor is rotated, the input shaft 42 rotates, and the small-diameter bevel gear 43 at the tip rotates.
Then, the large-diameter bevel gear 4 meshing with the small-diameter bevel gear 43
1 rotates, so that the central axis 1 rotates.

When the center shaft 1 rotates, the pot supporting frame 20 attached to the upper portion 1B of the center shaft 1
Therefore, the plurality of mill pots 30 attached to the pot support frame 20 can revolve around the central axis 1.

Therefore, according to the mill pot revolving mechanism 40, the center shaft 1 is rotated, and the mill pot 30 can revolve around the center axis 1 in the same rotation direction as the pot support frame 20.

Next, the mill pot rotation mechanism 50 will be described. FIG. 8 is a sectional view taken along line VIII-VIII in FIG. FIG.
As shown in FIG. 8 and FIG.
It is basically composed of a sun gear 51, a planetary gear 52 and an idle gear 53. The sun gear 51 is attached to the outer periphery of the upper bearing 15 between the upper surface of the base frame 10 and the lower surface of the lower table 25 of the pot support frame 20. The sun gear 51 is ring-shaped, and has teeth formed on its outer periphery, the base circle of which is concentric with the central axis 1. The upper bearing portion 15 rotatably supports the upper end portion of the lower portion 1A of the center shaft 1.
Even if the center shaft 1 rotates, the upper bearing portion 15 does not rotate, so the sun gear 51 attached to the outer periphery of the upper bearing portion 15
Does not rotate even if the central axis 1 rotates.

An idle gear 53 is meshed with the sun gear 51. The idle gear 53 is attached to the lower table 25 of the pot support frame 20 via a support shaft 54 that is parallel to the central axis 1, and can rotate around the support shaft 54.

The planet gears 52 do not mesh with the teeth on the outer periphery of the sun gear 51, but mesh with the idle gear 53. The planetary gear 52 is mounted concentrically with the lower sleeve 73 at a lower end of a lower sleeve 73 described later. The lower sleeve 73 rotates together with a mill pot 30 described later, but details thereof will be described later.

Therefore, the pot support frame 2 together with the central shaft 1
When 0 rotates, the idle gear 53 attached to the lower table 25 via the support shaft 54 revolves around the center axis 1 in the same direction as the pot support frame 20. The idle gear 53 meshes with the sun gear 51, and even if the center shaft 1 rotates,
Since the sun gear 51 does not rotate, the play gear 53
The sun gear 51 rotates while rolling on the outer periphery thereof. For this reason, the idle gear 53 revolves around the central axis 1 in the same direction as the pot support frame 20 while the support shaft 5
4 rotates in the same direction as the rotation of the pot support frame 20 around the center.

When the idle gear 53 rotates, the idle gear 53
The planetary gear 52 meshing with the rotation of the idle gear 53 rotates in the direction opposite to the rotation of the idle gear 53. Therefore, the lower sleeve 73 rotates in the direction opposite to the rotation of the idle gear 53. Since the mill pot 30 rotates together with the lower sleeve 73, the mill pot 30 also rotates in a direction opposite to the planetary gear 52, that is, in a direction opposite to the rotation of the pot support frame 20. As described above, since the mill pot 30 revolves in the same direction as the rotation of the pot support frame 20, the mill pot 30 rotates in the direction opposite to the revolving direction.

Therefore, according to the mill pot rotation mechanism 50, the mill pot 30 can be rotated in the rotation direction of the pot support frame 20, that is, in the direction opposite to the revolution direction of the mill pot 30.

Now, the details of the mill pot 30 will be described.
FIG. 1 shows a mill pot 3 mounted on a pot support frame 20.
0 is a schematic sectional view of FIG. FIG. 5 is an exploded view of the mill pot 30 alone. As shown in FIGS. 1 and 5, the mill pot 30 includes a pot portion 31, an upper rotation shaft 35 and a lower rotation shaft 3.
3.

First, the pot section 31 will be described. The pot portion 31 has a smaller outer diameter than an outer diameter of a cartridge 61 described later,
And a lid 31b. The container 31a has a cylindrical shape with a closed lower end, and its inside is a storage chamber for storing a large number of steel balls and materials to be ground such as soil. Lid 31b
Is a lid of the container 31a, and packing, not shown, is attached to the container 31a.
a between the upper end of
It is detachably attached to the upper end of a. For this reason,
If the lid 31b is attached to the upper surface of the container 31a, the accommodation room of the container 31a can be sealed.

Therefore, the pot portion 31 of the mill pot 30 can be vertically divided into two parts, a container 31a and a lid 31b, so that the earth and sand can be put into the mill pot 30 and the pulverized material can be taken out from the mill pot 30. Easy to do.

Next, the upper rotation shaft 35 will be described. FIG.
FIG. 7A is a sectional view taken along line VIIa-VIIa of FIG.
(B) is a sectional view taken along line VIIb-VIIb of FIG. 1. As shown in FIGS. 1, 5 and 7A, an upper rotation shaft 35 is fixed upright on the upper surface of the lid 31b. The upper rotation shaft 35 is provided coaxially with the pot portion 31. At the axially intermediate portion of the upper rotation shaft 35, a fitting portion having an oval cross section, that is, a non-circular cross section is formed. The reason will be described later. The sectional shape of the fitting portion is not limited to the oval shape.

A female screw is formed at the upper end of the upper rotation shaft 35 downward. This female screw is to which the suspension ring 35c is detachably attached. Hanging ring 35
As for c, an annular engaging portion is provided at an upper portion thereof to which a hook such as a crane can be engaged, and a male screw is formed at a lower end portion. Therefore, if the male screw of the suspension ring 35c is screwed into the female screw, the suspension ring 35c can be attached to the upper rotation shaft 35. Moreover, the mill pot 30 can be lifted by hooking a hook such as a crane on the hook of the hanging ring 35c.

Next, the lower rotation shaft 33 will be described. A lower rotation shaft 33 is fixed upright on the lower surface of the container 31a. The lower rotation shaft 33 is provided coaxially with the pot portion 31. At the axially intermediate portion of the lower rotation shaft 33, a fitting portion having an oval cross section, that is, a non-circular cross section is formed. The reason will be described later. The sectional shape of the fitting portion is not limited to the oval shape.

Next, the upper table 2 of the pot support frame 20
1 will be described. As shown in FIGS. 1, 2 and 6, the upper table 21 is formed with a plurality of cartridge mounting holes 21h penetrating the upper surface and the lower surface. The plurality of cartridge mounting holes 21h are formed at rotationally symmetric positions about the central axis 1. The inner diameter of each cartridge mounting hole 21h is larger than the outer diameter of the mill pot 30.

A cartridge 61 is detachably fixed to each cartridge mounting hole 21h. The cartridge 61 has a cylindrical shape, and its outer shape is larger than the outer diameter of the mill pot 30.
It is almost the same as the inner diameter of h. This cartridge 6
A flange is formed on the outer periphery of the upper end of 1. This flange allows the cartridge 61 to be inserted into the cartridge mounting hole.
The cartridge 61 is fixed to the upper table 21 while preventing the cartridge 61 from dropping downward through 21h.

Further, on the inner surface of the lower end of the cartridge 61,
A bearing support plate 61a is formed in a ring shape, and a plate-shaped bearing fixing member 61b is attached to the upper end of the cartridge 61. The bearing fixing member 61b has a through hole formed at the center thereof, which is coaxial with the cartridge 61 and has an inner diameter smaller than the inner diameter of the cartridge 61 and penetrates vertically. An upper radial bearing 62, which is a known radial bearing, is attached to the inner surface of the cartridge 61 between the bearing support plate 61a and the bearing fixing member 61b.
That is, the upper radial bearing 62 is sandwiched between the bearing support plate 61a and the bearing fixing member 61b, and is fixed to the cartridge 61.

An upper sleeve 63 is inserted and fixed inside the upper radial bearing 62. This upper sleeve 63
The upper end protrudes above the upper surface of the bearing fixing member 61b, and the lower end protrudes below the lower surface of the bearing support plate 61a. The upper sleeve 63 has a cylindrical shape, and has an upper rotation shaft mounting hole 63h penetrating the lower surface and the upper surface thereof. Therefore, the upper shaft 35 of the mill pot 30 can be inserted into and removed from the upper rotation shaft mounting hole 63h from the lower surface thereof in the axial direction.

As shown in FIG. 7A, a fitting portion for fitting the upper rotation shaft 35 of the mill pot 30 is formed at the middle of the upper rotation shaft mounting hole 63h in the vertical direction. The fitting portion has an oval cross section, that is, a non-circular cross section. Therefore, the upper rotation shaft mounting hole 63 of the upper sleeve 63
h, when the upper rotation shaft 35 of the mill pot 30 is inserted and attached, the upper rotation shaft 35 and the upper sleeve 63 are fitted at a fitting portion having a non-circular cross section, so that the upper shaft 35 is Even if insertion and removal in the vertical direction is free,
The upper rotation shaft 35 and the upper sleeve 63 rotate together. In addition, the cross-sectional shape of the fitting portion is not limited to the oval shape,
Any shape may be used as long as the lower shaft 33 of the mill pot 30 and the lower sleeve 73 can rotate together.

Next, the lower table 2 of the pot support frame 20
5 will be described. FIG. 4 is a schematic view of a fitting portion of the lower sleeve 73. As shown in FIGS. 1, 4 and 7, the lower table 25 is formed with a plurality of bearing mounting holes 25h penetrating the upper surface and the lower surface. The plurality of bearing mounting holes 25h are formed at rotationally symmetric positions about the central axis 1.

A lower sleeve receiving portion 26 is provided below the bearing mounting hole 25h. This lower sleeve receiving portion 26
The upper end is fixed to the lower surface of the lower table 25, and a through hole is formed at the center thereof, which is coaxial with the bearing mounting hole 25h and has an inner diameter smaller than the inner diameter of the bearing mounting hole 25h and penetrates in the vertical direction. A thrust bearing 26b, which is a well-known bearing, is provided on the inner surface of the lower end portion of the through hole. The reason will be described later. Further, a plate-like bearing mounting member 27 is mounted on the upper surface of the lower table 25. In the center of the bearing mounting hole 27, a through hole is formed which is coaxial with the bearing mounting hole 25h and penetrates in an up-down direction whose inner diameter is smaller than the inner diameter of the bearing mounting hole 25h. Between the upper end of the lower sleeve receiving portion 26 and the lower surface of the bearing mounting hole 27, a lower radial bearing 72, which is a known radial bearing, is mounted on the inner surface of the bearing mounting hole 25h. That is, the lower radial bearing 72 is sandwiched between the upper end of the lower sleeve receiving portion 26 and the lower surface of the bearing mount 27 and is fixed to the lower table 25.

The upper end of the lower sleeve 73 is inserted and fixed inside the lower radial bearing 72. The upper end of the lower sleeve 73 protrudes above the upper surface of the lower rotation shaft mounting hole 73h. A lower bearing mounting hole 73h is formed in the lower sleeve 73 downward from the upper surface thereof.
Thus, the lower shaft 33 of the mill pot 30 can be inserted into and removed from the lower rotation shaft mounting hole 73h from the upper surface thereof in the axial direction.

A fitting portion with which the lower rotation shaft 33 of the mill pot 30 is fitted is formed at the middle of the lower rotation shaft mounting hole 73h in the vertical direction. This fitting part has an oval cross section,
That is, the cross section is non-circular. Therefore, when the lower rotation shaft 33 of the mill pot 30 is inserted and attached to the lower rotation shaft mounting hole 73h of the lower sleeve 73, the lower rotation shaft 33 and the lower sleeve 73 are fitted at a fitting portion having a non-circular cross section. Therefore, even if the lower shaft 33 can be freely inserted into and removed from the lower sleeve 73 in the vertical direction, the lower rotation shaft 33 and the lower sleeve 7
3 and co-rotate. Moreover, since the vertical rotation of the mill pot 30 can be performed while the rotation by the power of the mill pot 30 is smooth, handling such as insertion and removal of the mill pot 30 by mechanical force can be easily performed. The sectional shape of the fitting portion is not limited to the oval shape, and may be any shape as long as the lower shaft 33 of the mill pot 30 and the lower sleeve 73 can rotate together.

In the lower sleeve 73, the shaft diameter at the lower end is smaller than the shaft diameter at the upper end. The lower end of the lower sleeve 73 is inserted and fixed inside the thrust bearing 26b such that the lower surface of the upper end of the lower sleeve 73 contacts the upper surface of the thrust bearing 26b. Therefore, the load of the mill pot 30 is supported by the lower sleeve receiving portion 26 via the thrust bearing 26b that rotatably supports the lower sleeve 73. Further, the lower end of the lower sleeve 73 protrudes below the lower sleeve receiving portion 26. This lower sleeve 73
The planetary gear 52 is mounted concentrically with the lower end of the lower sleeve 73. As described above, the planetary gear 52 is meshed with the sun gear 51 via the play gear 53.

Therefore, the upper rotation axis 3 of the mill pot 30
5 and the lower rotation shaft 33 are inserted and attached to the upper sleeve 63 of the upper table 21 and the lower sleeve 73 of the lower table 25, respectively.
Rotation shaft 35, lower sleeve 73 and mill pot 30
The lower rotation shafts 33 are fitted at fitting portions each having a non-circular cross section, so that they can rotate together.

Next, the operation and effect of the large capacity vertical ball mill of this embodiment will be described. FIG. 2 is a schematic explanatory view of an operation of removing the mill pot 30 from the pot support frame 20. As shown in FIG. 2, when steel balls, soil, and the like are put into the mill pot 30, first, the cartridge 61
Remove. Then, the upper radial bearing 62 and the upper sleeve 63 are removed from the upper table 21 together with the cartridge 61, and the upper table 21 has a cartridge mounting hole 21h through which the mill pot 30 passes.

Next, a suspension ring 35c is attached to the upper end of the upper rotation shaft 35 of the mill pot 30. When a hook of a crane is hooked on the hook portion, the mill pot 30 is lifted upward by the crane, and the pot is supported through the cartridge mounting hole 21h. It can be removed from the frame 20.

For this reason, the mill pot 30 can be handled by a mechanical force of a crane or the like. In addition, the upper radial bearing 62 remains held between the cartridge 61 and the upper sleeve 63, and the lower rotation shaft 33 and the lower sleeve 73 of the mill pot 30 can be inserted and detached, so that the lower radial bearing 71 is located on the lower table 25 side. Will be left. Therefore, it is not necessary to disassemble and assemble the bearing every time the mill pot 30 is taken out, so that workability is improved.

Further, since the planetary gear 52 of the gear mechanism for rotating the mill pot 30 is provided at the lower end of a lower sleeve 73 projecting downward from the lower sleeve receiving portion 26,
It does not interfere with the removal of the mill pot 30 upward.
Therefore, the mill pot 30 can be easily handled. Moreover, since the lower rotation shaft 33 of the mill pot 30 can be inserted and removed in the vertical direction while the rotation of the mill pot 30 by the power is smooth, handling such as insertion and removal of the mill pot 30 by mechanical force can be easily performed.

Next, the mill pot 30 taken out from the pot supporting frame 20 is divided into a container 31a and a lid 31b, and a large number of steel balls and a large weight object to be ground, for example, about 50 kg, are placed in the container 31a of the mill pot 30. Put each one.

Therefore, the mill pot 30 itself can be divided into upper and lower parts, and the mill pot 30 taken out of the pot support frame 20 can be divided into the container 31a and the lid 31b, so that the earth and sand can be easily put into the mill pot 30.

The container 31a and the lid 31b are integrated again, and the mill pot 3 is inserted through the cartridge mounting hole 21h of the upper table 21.
0 is put into the pot support frame 20, and the lower rotation shaft 33 is inserted into the lower sleeve 73.

At this time, since the planetary gear 52 of the gear mechanism for rotating the mill pot 30 is provided at the lower end of the lower sleeve 73 projecting downward from the lower table 25,
It does not interfere with the insertion of the mill pot 30 from above.
Therefore, the mill pot 30 can be easily attached to the lower sleeve 73.

Finally, if the upper sleeve 63 is fitted into the upper rotation shaft 35 and the cartridge 61 is fixed to the upper table 21, the cartridge 61 can be attached to the pot support frame 20 of the mill pot 30.

Next, when the motor is driven, the input shaft 42
The small-diameter bevel gears 43 respectively attached to the front ends rotate. Then, the large-diameter bevel gear 41 is moved by the small-diameter bevel gear 43.
Rotate, and the central axis 1 rotates.

When the central shaft 1 rotates, the pot supporting frame 20 attached to the upper portion 1B of the central shaft 1 rotates together with the central shaft 1, and the mill pot 30 also rotates the pot supporting frame 20 about the central shaft 1. Revolves in the same direction as.

When the pot supporting frame 20 rotates together with the center shaft 1, the supporting shaft 54 attached to the lower table 25 is rotated.
Revolves around the central axis 1 together with the lower table 25. Then, the idle gear 53 attached to the lower end of the support shaft 54 revolves around the central axis 1 in the same direction as the pot support frame 20. The teeth of the idle gear 53 are the sun gear 51
And the center gear 1 rotates, the sun gear 5
Since 1 does not rotate, the idle gear 53 rotates while rolling on the outer periphery of the sun gear 51. For this reason, the idle gear 53 revolves around the central axis 1 in the same direction as the pot support frame 20 and revolves around the support shaft 54 in the same direction as the pot support frame 20.

When the idle gear 53 rotates, the idle gear 53 rotates.
And the planetary gear 52 meshing with the idle gear 53 rotates in the opposite direction. Therefore, the lower sleeve 73 is supported by the lower radial bearing 72 and rotates in the opposite direction to the idle gear 53, that is, in the direction opposite to the rotation of the pot support frame 20.

The lower sleeve 73 and the lower rotation shaft 33 of the mill pot 30 are fitted together at a fitting portion having a non-circular cross section, so that they rotate together. The upper rotation shaft 35 of the mill pot 30 is also fitted to the upper sleeve 63 at a fitting portion having a non-circular cross section, and the upper sleeve 63 is rotatably mounted on the upper table 21 via the upper radial bearing 62 and the cartridge 61. Installed. For this reason, the mill pot 30
Can rotate in the direction opposite to the idle gear 53, that is, in the direction opposite to the rotation of the pot support frame 20.

As described above, since the mill pot 30 revolves around the center axis 1 in the same direction as the rotation of the pot support frame 20, the mill pot 30 revolves around the center axis 1, It rotates in the opposite direction.

Therefore, since the rotation direction of the mill pot 30 is reversed with respect to the revolving direction by the mill pot rotation mechanism 50, the impact given to the material to be ground in the mill pot 30 is increased, and the effect of the fine pulverization is enhanced.

As described above, according to the large-capacity vertical ball mill of the present embodiment, operations such as charging earth and sand into the mill pot 30 and taking out finely pulverized materials are performed while having a processing capacity much larger than that of the conventional technology. Is easily achieved.

Further, as shown in FIG.
When the mill 61 is detached from the pot support frame 20, the fixing between the cartridge 61 and the upper table 21 is released, and if the mill pot 30 is lifted by a crane or the like, the mill pot 30 is removed together with the cartridge 61, the upper radial bearing 62 and the upper sleeve 63. It can be removed from the pot support frame 20 through the cartridge mounting hole 21h of the upper table 21.

[0061]

According to the large-capacity vertical ball mill of the first aspect, when the cartridge is removed from the upper table, a hole for passing the mill pot is formed in the upper table, so that the mill pot can be lifted upward by a crane or the like. For this reason, the handling of the mill pot by the mechanical force of a crane or the like becomes possible.
In this case, the upper radial bearing remains held between the cartridge and the upper sleeve, and the lower rotation shaft and the sleeve of the mill pot can be inserted and removed so that the radial bearing is left on the lower table side. Therefore, it is not necessary to disassemble and assemble the bearing every time the mill pot is taken out, so that workability is improved. According to the large-capacity vertical ball mill of the second aspect, since the upper rotation shaft of the upper sleeve and the mill pot and the lower rotation shaft of the lower sleeve and the mill pot are fitted at fitting portions having a non-circular cross section, they rotate together with each other. In addition, it enables vertical insertion / removal while smooth rotation by the power of the mill pot. Therefore, handling such as insertion and removal of the mill pot by mechanical force can be easily performed. According to the large-capacity vertical ball mill of the third aspect, when the central axis rotates, the plurality of mill pots held on the upper and lower tables revolve, and the rotation of the sun gear rotating with the central axis rotates through the idler planetary gear. When the is rotated, the mill pot rotates. In this way, the mill pot revolves around its axis, but since this gear mechanism is provided at the lower end of the lower sleeve, it does not interfere with removal of the mill pot from above and insertion from above.
Therefore, the mill pot can be easily handled. Claim 4
According to the large capacity vertical ball mill, the mill pot itself can be bisected up and down, and the mill pot taken out of the pot support frame can be divided into a container and a lid. Objects can be easily taken out.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a mill pot 30 attached to a pot support frame 20.

FIG. 2 is a schematic explanatory view of an operation of removing a mill pot 30 from a pot support frame 20.

FIG. 3 is a schematic explanatory view of an operation of removing a mill pot 30 from a pot support frame 20.

FIG. 4 is a schematic view of a fitting portion of a lower sleeve.

FIG. 5 is an exploded view of the mill pot 30 alone.

FIG. 6 is a schematic sectional view of a large-capacity vertical ball mill of the present embodiment.

7A is a sectional view taken along line VIIa-VIIa of FIG. 1, and FIG. 7B is a sectional view taken along line VIIb-VIIb of FIG.

8 is a sectional view taken along the line VIII-VIII in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Center axis 10 Base frame 20 Pot support frame 30 Mill pot 31 Pot part 31a Container 31b Lid 33 Lower shaft 35 Upper shaft 51 Sun gear 52 Planetary gear 53 Play gear 61 Cartridge 62 Upper radial bearing 63 Upper sleeve 72 Lower radial bearing 73 Lower sleeve

Continuing on the front page (72) Inventor Kohei Takase 5-2, Sokai-cho, Niihama-shi, Ehime Prefecture Inside the Niihama Works of Sumitomo Heavy Industries, Ltd. (72) Inventor Shinichiro Maekawa 3-4-2, Nittacho, Niihama-city, Ehime Prefecture In-house (72) Inventor Hiroshi Muraguchi 3-4-2-3 Nittacho, Niihama-shi, Ehime Pref. In-house (72) Inventor Kaoru Makame Seika, Shigaraki-gun, Kyoto 3-5, Machikodai, Sumitomo Metal Industries Co., Ltd. (72) Inventor, etc. Takeuchi, etc. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Corporation F-term (reference) 4D063 FF04 FF21 GA10 GC22 GC23

Claims (4)

[Claims] 1. A central shaft installed upright, a base frame rotatably supporting a lower portion below the axial center of the central shaft, and an upper portion above the axial center of the central shaft. A pot support frame, and a plurality of mill pots attached to the pot support frame at symmetrical positions about the central axis.
An upper table attached to the upper end of the upper portion of the central shaft, and a lower table attached to the lower end, a cartridge is removably fixed to the upper table, and a radial bearing is provided in the cartridge. An upper sleeve is inserted into the radial bearing, an upper rotation shaft of the mill pot is inserted into the upper sleeve so as to be able to be inserted and removed in the axial direction, and a radial bearing is mounted on the lower table. A lower sleeve is inserted into the radial bearing, and a lower rotation shaft of the mill pot is inserted in the lower sleeve so as to be able to be inserted and removed in the axial direction, and the outer diameter of the mill pot is smaller than the outer diameter of the cartridge. Large capacity vertical ball mill. 2. A fitting portion between the upper sleeve and the upper rotation shaft has a non-circular cross section, and a fitting portion between the lower sleeve and the lower rotation shaft has a non-circular cross section. The large-capacity vertical ball mill according to claim 1, wherein the mill and the mill pot are configured to rotate together. 3. A lower end of the lower sleeve protrudes below the lower table, and a planetary gear is mounted concentrically on the lower end of the lower sleeve, and the planetary gear is connected to an upper surface of the base frame. 2. The large-capacity vertical shaft according to claim 1, wherein a center of a base circle provided between the lower table and the lower table is meshed with a sun gear concentric with the center axis via a play gear. Type ball mill. 4. The mill pot comprises an upper rotation shaft, a pot portion, and a lower rotation shaft, and the pot portion is vertically divided into two parts and comprises a lid and a container. The lid and the container are detachable. The large-capacity vertical ball mill according to claim 1, wherein: