JPH052387B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vertical crusher, and more particularly to a vertical crusher with an improved rock removal box.

[Prior Art] Vertical crushers equipped with a rotary table and crushing rollers are widely used as a type of crusher for finely crushing granules such as cement raw materials, coal, and chemical products into powder. This type of crusher consists of a disc-shaped rotary table that rotates at low speed, driven by a motor with a reducer, in the lower part of a cylindrical casing, and a part that divides the upper surface of the rotary table into equal parts in the circumferential direction, which are pressed together by hydraulic pressure or the like. It is equipped with a plurality of rollers that are driven to rotate.

For example, in FIG. 4 showing a conventional vertical crusher, the crusher, which is designated as a whole by reference numeral 1, is visually formed as a single tower body, with a rotating shaft rotated by an electric motor (motor) 2 at its base. A table 3 is placed. A plurality of conical crushing rollers 4 are arranged so that the rotary table 3 rotates in sliding contact with the rotary table 3, and the crushing rollers 4 are fixed to a support shaft 6 rotatably supported by a support arm 5. ing. This support shaft 6 further includes a rotating arm 7.
One end of the rotary arm 7 is fixed, and the rotary arm 7 extends downwardly through the side of a casing 8 surrounding the rotary table 3 and faces the lower space of the crusher. The lower end of the rotary arm 7 is rotatably supported on the tip of a rod 10 of a pressure cylinder 9 whose lower end is rotatably supported on the base of the crusher 1.

In this pulverizer 1, granules as a raw material are supplied to the center of a rotary table 3 through a supply pipe 13, and as the table rotates, they are caught between a driven roller 4 and the rotary table 3 and are crushed. On the other hand, hot air is guided into the casing 8 by a duct (not shown), and this hot air blows up from the annular space 14 between the outer peripheral surface of the rotary table 3 and the inner peripheral surface of the casing 8. As a result, the fine powder rises inside the crusher 1 while being dried, and is discharged from the discharge port 15 as a mixture with hot air and sent to the next process.

Note that some of the coarse particles also rise within the crusher 1, but are classified by the upper separator 15A and returned onto the rotary table 3.

Therefore, in addition to foreign objects such as bolts contained in the raw material, hard ores and the like may fall into the annular space 14.

Such foreign matter and hard ore (hereinafter referred to as waste rock) are discharged from the crusher through a separately provided discharge pipe, but as described above, the annular space 14
Since hot air is supplied to the exhaust pipe, there is a discharge pipe at the discharge end that opens at certain times to receive the discharged rock, and at other times maintains an airtight seal to block the hot air from escaping. A box is installed.

FIG. 5 is a longitudinal sectional view showing the structure of a conventional rock removal box.

Reference numeral 16 is a box body having a receiving port 17 for waste rock in its upper part and a discharge port 18 in its lower part of the side wall.

A short pipe 20 to which the waste rock introduction pipe 19 is connected is fixedly installed in the receiving port 17, and the lower end of this short pipe 20 protrudes into the box body 16.
A sliding seal structure member 21 is provided at the lower end of. A seal plate 22 that slides on the structural member 21 is provided so as to be horizontally movable while being guided by guides 23 and 24, making it possible to open and close the receiving port 17.

Note that the reference numeral 25 is the door of the discharge port 18.

[Problems to be Solved by the Invention] In the rock removal box attached to the conventional vertical crusher described above, since the seal plate 22 and the seal structure member 21 slide, it is difficult to maintain sufficient airtightness. In order to hold the seal plate 22, the upper surface of the seal plate 22 must be precisely finished, resulting in an extremely high production cost.

Moreover, even if it is precisely finished, the sealing surface is likely to wear out due to particles or powder getting caught in the sealing surface, resulting in a decrease in airtightness.

In addition, the seal plate 22 is thermally deformed due to the waste rock heated by a crusher, hot air, etc. coming into contact with the seal plate 22, causing warpage, curvature, etc., which also reduces airtightness.

Such a reduction in airtightness not only results in a loss of hot air, but also causes hot air to come out when the door 25 is opened to discharge the debris accumulated in the box 16, reducing work safety. It also stirs up.

[Means for Solving the Problems] The vertical crusher of the present invention has a lid slidably provided in the box by a support shaft, and the lid is moved toward and away from the green portion of the receiving port. to open and close the receiving port, and
A stone waste box is attached to the green part of the reception opening, which is provided with an elastic sealing material for sealing the lid.

[Function] In the stone waste box of the vertical crusher of the present invention, the lid swings and contacts the receiving port from below to block the receiving port. Since the green portion of the receiving port is provided with an elastic sealing material, it has excellent airtightness, and even if the lid body is slightly deformed, sufficient airtightness can be maintained.

When the lid is moved away from the receiving port, the receiving port opens and the waste stones are introduced into the box. At this time, by sufficiently rotating the cover, the waste stones that were on the cover are removed. All of the debris has been removed, and the remaining debris is also gone.

[Example] Examples will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view of a rock removal box attached to a vertical crusher according to an embodiment of the present invention, FIG. 2 is an enlarged view of the same essential part, and FIG. 3 is a cross-sectional view showing an example of installation.

As shown in FIG. 1, the stone waste box of the vertical crusher according to this embodiment has a waste stone receiving port 26 and a discharge port 27.
A box body 28 is provided. The receiving port 26 is opened in the top plate of the box body 28, and a flange 29a for this connection is provided at the upper end of the short pipe 29 to which a short pipe 29 to which the waste rock introduction pipe is connected is fixed, and a flange 29a for this connection is provided at the lower end. As shown in FIG. 2, an elastic sealing material 30 is provided to surround the short tube 29. Reference numeral 31 is a ring-shaped member for holding the sealing material 30, and is fixed to the short tube 29 by welding or the like.

Therefore, the support shaft 3 is placed close to the top plate inside the box body 29.
2 extends horizontally. A lid 33 is fixed to the support shaft 32 via an arm 34. Both ends of the support shaft 32 are pivotally supported on both side walls of the box body 28, and one end extends outside the support shaft 32 and is connected to a drive device such as an air cylinder.
It is configured to be able to rotate around the axis.

In this embodiment, the lid body 32 has a shallow box shape with an open top surface, and the shape and size are such that the open green portion of the top surface can be brought into close contact with the elastic sealing material 30.
By rotating the shaft 32, a state where the shaft 32 is brought into close contact with the elastic sealing material 31 to close the opening 26 as shown in FIG. 2, and a state where the shaft 32 is rotated in the opposite direction to open the opening 26 are achieved. Possible.

Note that the reference numeral 35 in FIG. 1 is a door for opening and closing the discharge port 27.

As shown in FIG.
4 and receives the waste rock.

In such a configuration, the waste rock from the crusher 1 is
It is introduced into the box body 28 through the introduction pipe 36 and the short pipe 29, but under normal operating conditions, the lid body 33 is in the position of blocking the intake port 26 as shown in FIG. The stones are once deposited on the lid body 33. At a predetermined time, the shaft 32 is rotated and the lid 33 is rotated.
is separated from the opening 26 as shown by the solid line in FIG.
Let this open. By sufficiently rotating the lid 33, all the waste stones accumulated on the lid 33 fall onto the floor inside the box 1. After that, support shaft 3
2 is reversed, and the receiving port 26 is sealed.

This operation is performed once or multiple times, and the box body 1
When the required amount of waste stone has accumulated inside, the door 35 is opened and it is discharged.

Since the lid body 33 is in close contact with the green portion of the receiving port 26 via the elastic sealing material 30, the receiving port can be sealed in a highly airtight state. This elastic sealing material 30 is provided facing downward, and when the lid 33 is rotated, all the debris that is about to accumulate on the green part of the lid 33 falls, so the lid 33
3 and the elastic sealing material 30, and there is no chance of foreign matter getting caught in the sealing surfaces of the sealing material 3 and the elastic sealing material 30, and highly airtight sealing can be achieved for a long period of time.

In addition, if the width of the elastic sealing material 30 is allowed, sufficient adhesion can be achieved even if the green of the lid 33 is deformed. If a shallow box-shaped lid body 33 is used as in this embodiment, the lid body will have high bending rigidity and deformation will be extremely difficult to occur.
Furthermore, since the airtightness is perfect, there is no hot air protruding when discharging the waste rocks.

In addition, by sufficiently rotating the lid body 33, all the waste rocks accumulated on the top surface can be dropped.
Even if the waste rock is a combustible substance such as coal, long-term retention on the lid body is avoided, and the fear of ignition is also eliminated.

Further, when manufacturing the lid body 33, unlike conventional seal plates, precision finishing is not required, making manufacturing easy and low cost.

[Effects] As described above, the vertical crusher of the present invention is equipped with a stone waste box having the following excellent features.

The intake port can be reliably sealed airtight for a long period of time.

It is easy to manufacture and low cost.

The waste rock discharge work is safe.

This method can be applied even if the waste rock is a combustible material.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the waste rock box of the vertical crusher according to the embodiment, Fig. 2 is an enlarged view of the main parts, Fig. 3 is the installation configuration diagram, and Fig. 4 is a cross-sectional view of the vertical crusher. , FIG. 5 is a sectional view of a conventional rock removal box. 26...Intake port, 27...Discharge port, 28...Box body, 30...Elastic sealing material, 32...Support shaft, 3
3... Lid body.

Claims (1)

[Claims] 1. In a vertical crusher equipped with a rock waste box having a waste rock receiving port and a waste rock discharge port, and a means for opening and closing the waste rock receiving port and discharge port, the said waste rock box The receiving port is opened downward, and as an opening/closing means for the receiving port, it is swingably supported in the box by a support shaft, and has a position that covers the receiving port and a position separated from the receiving port. What is claimed is: 1. A vertical crusher, characterized in that a lid body capable of taking an open position is provided, and an elastic sealing member for sealing the lid body is provided in the opening green portion of the receiving port.