JPS5884033A - Drum mixer - Google Patents

Abstract

PURPOSE:To easily maintain and control a titled mixer, by installing a drum having a hollow truncated-cone shape so that its axial center line is horizontal, and supporting the drum by horizontally arranged supporting rollers through supporting annular bodies attached to the outer circumference of the drum. CONSTITUTION:Plural supporting annular bodies 24 are fitted to the outer circumference of a hollow truncated-cone-shaped drum 21 having a small diametral opening end as a raw material charging port 22 and a large diametral opening end as a discharging port 23; the drum 21 is supported, so that its axial center line is horizontal, by supporting rollers 25, arranged horizontally corresponding to respecive annular bodies 24, through the bodies 24. Accordingly the rollers 25 receive only the radial loads and scarecely the thrust loads, consequently, the need for adjusting the setting angle of the rollers 25 is eliminated, and scarcely any troubles about bearings for supporting the rollers 25 occur, moreover, the need of thrust rollers required conventionaly is eliminated and the construction is simplified.

Description

[Detailed description of the invention] In this invention #i, emotional raw materials are mixed with stem grains.

For example, it is well known that powdered ore, powdered ore, and powdered lime are used as raw materials, but Takehara Ukomek is able to uniformly and sufficiently feed the raw materials by mixing them. In the past, raw materials were mixed and granulated using nine facilities constructed as schematically shown in Parts 1 and 2.

That is, in the equipment company showing the 1st m1K, the raw material is supplied from the raw material tank 1 to the first stage drum mixer 3 by the belt conveyor 2, and the raw material is mixed with rice and sent to the next stage belt conveyor 4. The raw material is fed by the belt conveyor 4 to the second stage ilO drum mixer 5 where it is granulated, and then the granulated raw material is fed to the sintering machine 8 via the belt conveyor 6 and the feed hopper 7. It is configured. In addition, in place of the drum mixer 3 for mixing and the drum mixer 5 for granulation in the equipment shown in FIG. It is said that

Drum mixers 3, 5, and 9, conventionally used in each of the above-mentioned facilities, are constructed as shown in Figures 3 to 5. That is, Figures 3 to 5
The figure is a diagram showing a drum mixer 9 which performs the functions of mixing and granulating raw materials among the drum mixers described above,
The drum 10 serving as the main body is formed into a cylindrical shape, and is arranged so that its center axis is inclined at a predetermined angle α with respect to a horizontal plane. It is rotatably supported via a supporting annular body (hereinafter referred to as a tire) 12.

As shown in the plan view of these support rollers 11#i drop 411, their central axes are arranged so as to be inclined at the same angle as the drum 100 inclination angle a with respect to the longitudinal direction of the drum 100, and as they move around, A circular thrust roller 13 is placed on the bottom of the drum 10 to receive a thrust load. It is arranged in such a way that it makes you think. To explain the rounding mechanism that rotates the drum 10 once, a ring gear 14 is installed on the outer peripheral surface of the drum 1G, and a pinion 15 that fits into the ring gear 14 is rotated by a drive motor 17 via a speed reducer 16. As a result, Draf 10 appears to be moving. t*, Inside the drum 1040, a plurality of mixing blades 19 are attached in the radial direction on the raw material charging port 18 side.

According to the drum mixer 9 described above, the drum 10 is connected 4!
Rotate in the direction indicated by the arrow M in I and Figure 5.
Therefore, the raw material 20 supplied from the charging port 18 is transferred to the blade 1.
9, the mixture moves forward while being stirred and mixed by the drum 19, and is granulated while rolling on its inner circumferential surface by the rotation of the drum 10 at locations where the blades 19 are not provided.

However, in the conventional drum mixer 9, the tires 12
Of the frictional force f generated between the support roller 11 and the support roller 11, an obliquely upward component force (hereinafter referred to as push-up force) due to the inclined arrangement of the support roller 11 in FIG. 4 and the thrust roller 13, Dead weight of drum 10 and raw material 20
Since the configuration supports the thrust load fw due to the weight of the support roller 110, it is necessary to adjust the angle α shown in FIG. Since a large frictional force is generated between them, the tire 12 or the support roller 11 is easily worn out, and when the tire 12h and the support row 211 are worn out, the angle α shown in FIG. 4 of the support row 2110 will be distorted. The above-mentioned angle α must be adjusted even in the middle of the operation, and thus the conventional drum mixer 9 has the problem of having to frequently adjust the installation angle of the support roller 11. Yes, in addition to this, support roller 11
There were problems such as the need for a mechanism to adjust the angle of the blade. As is clear from the configuration of the drum mixer 9 described above, the drum 10 is
Since the push-up force f7 is generated only when the drum 100 is rotated in the direction indicated by the arrow mark in the figure, the rotating direction of the drum 100 is limited to one direction, and therefore the raw material 20 is rotated as shown in FIG.
96 adheres to the back side of the blade 19, causing the weight balance to deteriorate, and is abraded by the measuring raw material 20 on the surface of the working blade 19, resulting in adhesion to the blade 19, requiring frequent removal of the 9 raw material 200 and repair of the blade 19 itself. <emuokadaimatch9.

In order to solve this problem, the support roller 11 should be replaced with a fourth roller.
Tilt 1 in the opposite direction to the state shown in the figure, and move the drum 10 by arrow A.
However, if the direction of the support roller 11 is to be changed, the work will be a lot of work, and considering the work time and the required cost, the support roller 211 may be rotated in the opposite direction. It is practically impossible to change the direction of the - This invention was made in view of the above circumstances, and aims to provide a drum mixer that is less prone to breakdowns and easy to maintain.

In other words, since the conventional drum mixer is of the so-called inclined type, an excessive thrust load is generated and the direction of rotation is limited. In order to solve the above-mentioned problems, the drum is configured to be installed horizontally.

Examples of this invention will be described below with reference to Figures 6 to 8. FIG. 6 is a front view showing an embodiment of the present invention, in which the drum 21 has a hollow truncated cone shape, the small diameter opening end is used as the raw material charging port 22, and the large diameter opening end is the discharge port. 23, and on the raw material loading port 22 and discharge port 23 sides of the outer circumferential surface of the drum 21, the outer cylindrical body is the same as a supporting annular body, and the outer circumferential surface is parallel to the central axis of the drum 21. 9 tires 24 are fitted. On the lower side of the drum 210, one pair (two pairs in total) of support rows 225 are provided corresponding to each of the tires 24.
are arranged horizontally at the same height as shown in FIGS. 6 and 7, and the drum 21 is rotatably supported by placing tires 24 on these support rollers 25. Ru. Therefore, the drum 21
Since they have the same outer diameter and the support rollers 25 are at the same height and horizontal, their central axes are horizontal, and as a result, the support rollers 225 have a The entire load is applied directly to the shaft, and no load is caused. Note that since the drum 21 has a hollow truncated conical shape, the inner surface of the drum 21 is only inclined with respect to the horizontal plane.

The inside of the drum 210 is a mixing zone M and a granulation zone P from the raw material charging port 22, and a sixth zone is formed on the inner peripheral surface of the mixing zone M of the drum 21. Figure and 8th
As shown in the figure, several blades 26 are attached to the drum 21 in a radial direction.

The rounding mechanism for rotating the drum 21 is similar to that of the conventional drum mixer 9, and a KIJ ringer 27 is attached to the central part of the outer peripheral surface of the drum 21, and a binion 28 meshing with the ring gear 27 is decelerated @29. The drum 2 is rotated by the drive motor 30 through the drum 2.
1.

In the drum mixer configured as above, drum 2
1 is rotated by the drive motor 30 and raw materials are fed into the drum 21 through the O raw material charging port 22. The raw materials are agitated and mixed by the blades 26, and the granulation zone P
The raw material is granulated by transferring the circumference of the drum 21, and furthermore, since the inner surface of the drum 21 is inclined downward toward the discharge port 23 as described above, the raw material is granulated by transferring the circumference of the drum 21.
3, the drum mixer 21
In this case, the supplied raw material can be sent toward the discharge port 23 while being collected and granulated.

In that case, the drum 21 is arranged so that its center axis is horizontal, and the support row 225 is horizontal and the drum 21
Since the drum 210's own weight and the weight of the raw material are directly applied to the support roller 25 on its center axis, unreasonable forces such as component forces along one direction of the axis are generated. In addition, even if the support row 2210 bearing is a radial bearing that is normally used, it will not fail, and the thrust roller that was previously required will no longer be required. The company structure will also be simplified. Also, since the weight of the drum 21 and the raw materials are relatively large, the drum mixer described above also has tires 24 and support rollers 2.
s may wear out, but even in that case, in the drum mixer described above, if the load applied to each support roller z5 is set to be equal as is normally done, the drum 21
Since the support rollers 2SO do not incline significantly, the support rollers 2SO can be operated in a unified manner without special adjustment. Furthermore, in the drum mixer described above, the drum 21 is arranged so that its central axis is horizontal, and each support row 2
25 is horizontal, the load applied to the support roller 25 and the force acting between the support row 225 and the tire 24 are always constant regardless of the rotation direction of the drum 210m1. Drum 21 in the mixer
can be rotated once in either direction. Therefore, if the direction of rotation of the drum 21 is changed at regular intervals, the material will not stick to one side of the blade 26 and the weight balance will not be disrupted, and uneven wear of the blade 26 will be prevented. At the same time, the raw materials can be homogenized and granulated properly without any formation of grains.

In the above embodiment, each tire 24 has the same outer diameter and each support roller 25 has the same height. However, the present invention is not limited to the above embodiment, and tires with different outer diameters are used. Tires may also be used.

In this case, by varying the height of the support rollers according to the difference in the outer diameter of the tires, it is possible to support the drum 21 with the horizontally arranged support rollers so that the center axis thereof is horizontal.

As is clear from the above description, according to the drum mixer of the present invention, the drum is formed into a hollow truncated cone shape, and the drum is arranged so that the central axis is horizontal, and the drum is arranged horizontally, and has nine supporting rods. ) The drum is attached to its outer circumferential surface and supported via a support lug.
6, only the radial load is applied to the support row ν, and the thrust load line may begin to curve.Therefore, there is no need to adjust the installation angle of the rounded support roller O, as well as the bearing that supports the support row ν. There is almost no chance of the device breaking down, and in addition, the nine strokes required in the past can be omitted and the configuration can be simplified. In the drum mixer invented by ζO, the drum can be rotated once in both forward and reverse rotations, so if a stirring fan is installed inside the drum, the time difference between (by the person who changes the direction of drum rotation),
It is possible to prevent raw materials from adhering to only one side of the blade and causing wear on only one side of the blade.As a result, most of the work to remove adhesion and repair of worn leading blades is eliminated. This eliminates the need for adjustment of the support rollers mentioned above, and there is almost no failure thereof, making maintenance and management easy, and there is almost no chance of material adhering to the blades. With K, raw materials can be mixed uniformly and granulated appropriately.

[Brief explanation of the drawings] Fig. 1 is a schematic diagram showing an example of conventional rounding equipment for mixing and granulating raw materials for sintering, Fig. 2 is a schematic diagram showing another example of the conventional equipment, and Fig. 3 is a schematic diagram showing another example of the conventional equipment. Figure 114 is a front view showing a conventional drum mixer, Figure 114 is a plan view showing the arrangement of its support rollers, Figure 5 is a view taken along the line V-V in Figure 3, and Figure 6 is an embodiment of the present invention. FIG. 7 is a plan view showing the arrangement of the support rollers, and FIG. 8 is a view taken along the line - 2 in FIG. 6. 21... Drum, 22... Raw material charging port, 23...
Discharge port, 24...Tire (supporting annular body), 25...
・Support roller. Applicant Kawasaki Steel Co., Ltd. Agent Patent attorney Takehito Toyota (one idiot) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] A plurality of supporting annular bodies are arranged on the outer peripheral surface of the hollow truncated conical drum, with the small diameter opening end serving as the raw material loading port and the large diameter opening end serving as the discharge port. Correspondingly, by means of a horizontally arranged nine supporting rows 2) the drum is aligned with its central axis -
The drum mixer is supported through an annular body so that the drum mixer is horizontal.