JP2001286779A - Vertical roller grinder and method for replacing grinding roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical roller grinder capable of efficiently performing the replacing work of an abraded part for a short time and a method for replacing the abraded part of the vertical roller grinder. SOLUTION: A pressure cylinder 5 is attached to the upper part of the vertical roller grinder and an inspection door and a roller feed in and out device 20 are arranged at every place corresponding to each of the grinding roller 3 of a housing 1 and the attaching position and shape of the roller feed in and out device 20 are set so as not to obstruct the feed in and out work of a grinding segment 6 after each grinding roller 3 is detached. By this constitution, the rising and falling of a pressure frame 13 can be performed using the pressure cylinder 5 and the detachment and attachment works of the grinding roller can be parallelly performed at the same time and a process for performing the detachment and attachment works of the roller feed in and out device 20 before and after the replacing work of the grinding segment can be omitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention crushes a lump caught between a concave groove formed in an annular shape on the upper surface of the outer periphery of a rotary table and a plurality of crushing rollers provided in a circumferential direction. The present invention relates to a vertical roller crusher and a method of replacing the crush roller.

[0002]

2. Description of the Related Art As a pulverizer for finely pulverizing lump such as coal, cement raw material or new raw material, a vertical roller type having a rotating table and a plurality of pendulum rollers rolling thereon. Has recently been widely used. FIG. 15 is a side view showing a schematic configuration of a vertical roller crusher of this type, and FIG. 16 is a plan view of the vertical roller crusher with the upper rotary classifier virtually removed. The configuration and operation of the vertical roller crusher will be briefly described. A substantially disk-shaped rotary table 2 is rotatably provided below the cylindrical housing 1, and the rotational drive from a mill motor 19 is reduced by a reducer 18. The rotation is performed at a low speed by being transmitted to the turntable 2. A plurality (three in this case) of crushing rollers 3 arranged at equal intervals in the circumferential direction above the outer peripheral portion of the turntable 2 while receiving downward pressing force from a hydraulic mechanism described below. , Can be rolled on the rotary table 2. Roller brackets 11 that support each of the crushing rollers 3 are rotatably and integrally supported by a pressure frame 13 (only a partial cross section is drawn in the figure) via a roller pivot 12. Pressing rods 14 are provided at three outermost positions of the pressing frame 13 respectively.
Are attached to each other, and the other ends thereof are attached to a pressurizing cylinder 17 installed on the floor surface.

The bulk material M supplied from the material supply pipe (center chute) 4 and dropped to the center on the turntable 2 receives centrifugal force due to the rotation of the turntable 2 and draws a spiral locus in the outer circumferential direction. In the course of moving to the position, the powder is caught between the surfaces of the crushing segments 6 provided on the outer peripheral portion of the rotary table 2 and the respective crushing rollers 3 to be crushed. The hot air (primary air) A whose temperature is adjusted on the upstream side and is sent from the air duct 7 is blown up from the air blowing port (air throat) 8 to the upper center of the rotary table 2, and is pulverized in the above-described process. The powder is wound up by the hot air A and dried while rising inside the housing 1. In the process of rising in this way, coarse (large particle size)
The granular material falls on the rotary table 2 by its own weight (primary classification), and is pulverized again through the above-described steps.

[0004] After passing through the primary classification, the powder further rises inside the housing 1 and reaches a rotary classifier (rotary separator) 9 provided at the upper part thereof. Next classification), fine powder particles smaller than a predetermined particle size are pneumatically transported outside the machine as product fine powder P,
It is sent to a pulverized coal burner (not shown). The coarse powder separated from the product fine powder P by the rotary classifier 9 falls on the rotary table 2 by its own weight similarly to the coarse powder, and is reground by the above-described steps. As described above, in the vertical roller pulverizer, the above-described pulverizing process of the powder is repeated, and the product fine powder P smaller than a predetermined particle size is generated.

[0005] In the vertical roller crusher, as described above, the bulk material M and the granular material are caught between the crush roller 3 and the crush segment 6 and crushed. With the use of time, the crushing section composed of the above wears and deteriorates. Therefore, the crushing roller 3 and the crushing segment 6 must be periodically replaced. FIG.
Is a side view of a vertical roller crusher showing a state where a roller carry-in / out device and a lifting / lowering device are attached. FIG. 18 is a plan view of the vertical roller crusher with its rotary classifier virtually removed. 19 is a side view of a vertical roller pulverizer showing a state in which a pulverizing roller is carried out, FIG. 20 is a side view of a vertical roller pulverizer showing a state in which a pulverizing segment is carried out, and FIG. 21 is a virtual view of the rotary classifier. 22 is a plan view of the vertical roller pulverizer in a state where the pulverizing roller and the pulverizing segment are exchanged. FIG.

A method for replacing the crushing roller and the crushing segment will be described below with reference to these drawings. First, cold air whose temperature has been adjusted on the upstream side is sent from the air duct 7 to cool the vertical roller pulverizer (T ₁ ). Next, the mounting bolt of the inspection door 21 provided at one place on the side surface of the housing 1 is removed, and the inspection door 21 is opened as shown in FIG. 18 (T ₂ ). As shown in FIG. 17, the roller carry-in / out device 20 is on the floor (T ₃ ), the inching motor 26 is on the mill motor 19 (T ₅ ), and the lower end of the elevating device 30 is on the side of the pressure frame 13. At the end (T ₄ ), each is attached. Thereafter, coal lumps, fine powder, and the like remaining in the vertical roller pulverizer are removed from the opening of the inspection door 21 and cleaned (T ₆ ). Then, as shown in FIG. 18, a roller fixing jig 27 having a turnbuckle for preventing the crushing roller 3 from falling down is attached to the roller bracket 11 to complete the preparation for the replacement work.

Next, as shown in FIG. 17, the roller carrying-in / out device 2 is attached to the roller bracket 11 of the first crushing roller 3.
0 bolt mounting portions 20a bolted while adjusting the position by the vertical adjustment device (T _7). After that, the link support and the strap plate are removed, and the roller bracket 1 is removed.
1 is removed from the pressing frame 13 (T ₈ ), and the roller bracket 11 is attached to the pressing frame 1.
Then, the pressure frame 13 is lifted by the lifting device 30 (T ₉ ). Next, as shown in FIG. 19, the roller carrying-in / out device 20 is driven to reduce the size, and the first crushing roller 3 is turned outward around the turning fulcrum of the bolt mounting portion 20a and taken out of the machine (T ₁₀ ). The taken out crushing roller 3 is held by the hanging jig 29, and the crushing roller 3 is lifted by the monorail hoist 25 via the hanging jig 29 and moved to a predetermined place.

When the unloading of the first crushing roller 3 is completed, the jogging motor 26 is rotated to rotate the rotary table 2.
Is rotated at a low speed until the second crushing roller 3 reaches a position facing the roller carrying-in / out device 20 through the opening of the opened inspection door 21. Then, by repeating the above steps Step T ₇ through T ₁₀ exactly the same work procedure described for carrying out the first milling roller 3 is moved to a predetermined location removed second grinding roller 3 to the outside of the apparatus. The unloading of the third crushing roller 3 is performed in exactly the same operation procedure as the unloading of the second crushing roller 3, and the unloading of all the crushing rollers 3 is completed. Therefore, removing the roller loading and unloading device 20 from the floor (T _11).

In this manner, as shown in FIGS.
And an empty space is formed between the rotary classifier 9 and
Here, the monorail 22 is installed (T ₁₂ ). Next, the bolt to which the cover cone 28 is attached is removed, and the cover cone 28 is removed from the turntable 2 (T ₁₃ ). Then, a nut of a wedge bolt (not shown) fixing the crushing segment 6 is sequentially removed from the opening of the yoke,
Get rid of all of the wedge bolt (T _14). Next, one with to hold the grinding segments 6 at loading and unloading tool 23, through the loading and unloading tool 23 lifting the grinding segment 6 in the chain block 24 is unloaded to the outside of the apparatus (T _15). Then, the jogging motor 26 is rotated to rotate at a low speed until the next crushing segment 6 reaches a predetermined position, and the next crushing segment 6 is lifted by the chain block 24 in the same manner as the unloading of the crushing segment 6 described above. Then, the work is carried out to the outside of the machine, and thereafter, this work is sequentially repeated, thereby turning table 2 of all the crushing segments 6.
Complete the removal and out of the machine.

[0010] Unloading of all the crushing segments 6 is completed.
And the reverse procedure of the above-described unloading procedure of the crushing segment 6.
To carry in the crushing segment 6 (T₁₆). That is, new
Holding the grinding segment 6 with the loading / unloading jig 23
Lifted at block 24, loaded into machine and turned
Attach in place 2 and tighten wedge bolt with nut
Attach and fix (T₁₇). Hereafter, the rotary table 2
Rotation of fixed amount and rotation table 2 of new grinding segment 6
Repeated installation to complete loading of crushing segment 6
I do. Then, the cover cone 28 is set on the turntable 2.
After attaching (T ₁₈), Remove the monorail 22 and outside the machine
(T₁₉).

Next, the roller carrying-in / out device 20 is attached to the floor again (T ₂₀ ), and the new grinding roller 3 is attached to the hanging jig 2.
9 and lifted by the monorail hoist 25, and the crushing roller 3 is attached to the bolt mounting portion 20 a of the roller carrying-in / out device 20.
11 is fixed with bolts. Then, the roller loading / unloading device 20 is extended and driven, and the first crushing roller 3 is rotated inward about the rotation fulcrum of the bolt mounting portion 20a to be loaded into the apparatus, and the roller bracket 11 is bolted to the pressing frame 13 by the bolt. (T ₂₁ ). Then, attach the link support strap plate (T _22). Loading of the crushing roller 3 into the machine and the roller bracket 11
Is fixed to the pressure frame 13 three times. Thus, the mounting of the grinding roller 3 is finished, remove the roller loading and unloading device 20 from the floor (T _23), inspection door 2
1 is closed (T ₂₄ ), the grinding roller 3 and the grinding segment 6 are closed.
Performs a trial run of the updated vertical roller crusher (T ₂₅ ) and confirms that it operates normally.

[0012]

In the above-mentioned prior art, the crushing roller 3 and the crushing segment 6 are detached and mounted by rotating the rotary table 2 by a predetermined angle for each operation of each mounting part. After that, the same work steps must be repeated by the number of attachments, and a great deal of time has been spent in performing these replacement work. In addition, although the pressing frame 13 is supported by the pressing cylinder 17 via the pressing rod 14, the pressing cylinder 17 is mounted on the floor surface. When carrying out the replacement work, the pressurizing rod 14 and the pressurizing cylinder 17 are removed, and the lifting / lowering device 30 supported on the upper part is removed.
Is attached to the pressure frame 13 and moved up and down.
I had to do some crazy work.

The present invention solves the above-mentioned problems in the prior art, and provides a vertical roller crusher and a method for replacing worn parts of a vertical roller crusher, which can efficiently replace worn parts in a short time. The purpose is to provide.

[0014]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a vertical roller crusher comprising a plurality of pressure cylinders which support a pressure frame and press against a rotary table. It is supported at the upper part of the housing surrounding the machine, preferably, a door that can be opened and closed at the opposing portion of all the crushing rollers of the housing, as a loading / unloading port for carrying out and carrying in the crushing rollers when replacing the crushing rollers. In order to support the crushing roller during the work of replacing the crushing roller and carry it out of the machine and carry it into the machine, after the crushing roller of the roller carrying-in / out device arranged outside the end of the opening of each door, and carry in the crushing roller. The front position does not hinder the carrying in and out of the pulverized segments constituting the concave groove portion.

Further, the method of replacing the crushing roller of the vertical roller crusher is described in the following. A roller carry-in / out device is provided, and these roller carry-in / out devices are simultaneously driven to support the pulverizing roller to carry out and out of the machine.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a schematic configuration of a vertical roller crusher according to an embodiment of the present invention.
Is a plan view of the vertical roller crusher with the upper rotary classifier virtually removed, FIG. 3 is a side view of the vertical roller crusher showing a state where a roller carrying-in / out device is attached, and FIG. FIG. 5 is a plan view showing a state in which the rotary classifier is virtually removed, FIG. 5 is a side view of a vertical roller crusher showing a state in which a grinding roller is carried out, and FIG. 6 is a vertical type showing a state in which a grinding segment is carried out. FIG. 7 is a side view of a roller crusher, FIG. 7 is a plan view of a vertical roller crusher in a state where the rotary classifier is virtually removed, and FIG. 8 is a process procedure diagram showing a procedure for replacing a crush roller and a crush segment. It is.

In these figures, reference numeral 5 denotes a pressing frame 1
One end of the pressure rod 14 is attached to each of the three outermost positions of the cylinder 3, and the other end is attached to the upper part of the vertical roller crusher. There are three installation holes formed outside the horizontal position of the door for installing the cylinder of the roller carrying-in / out device 20. The same reference numerals are given to portions which are the same as or can be regarded as the same as those in the conventional example, and redundant description thereof will be omitted. In addition,
Inspection door in this embodiment is three respectively disposed in housing 1 a portion opposed to the three grinding rollers 3, in the figure is indicated by reference numeral 21 ₁ to 21 _3. Further, the mounting position of the roller carrying-in / out device 20 is not at the floor surface but at the bottom surface of the installation hole 15 lower than the floor surface, and the bolt mounting portions 20a are mounted at the lower side of the housing 1,
These pivot points are points projecting outward in the horizontal direction from the mounting position.

As described above, by mounting the pressure cylinder 5 on the upper portion of the vertical roller crusher,
Since a free space is formed at the lower portion of the lower portion 3 to allow the loading and unloading of the crushing roller 3 and the like, there is no need to remove the pressure cylinder 5 before the loading and unloading of the crushing roller 3 and the like. Not only does it need not be necessary to separately attach and remove the lifting device, but also the lifting and lowering of the pressing frame 13 can be performed using the pressing cylinder 5. In addition, since the inspection door 21 and the roller carrying-in / out device 20 are provided for each corresponding position of each crushing roller 3 of the housing 1, the crushing roller 3 is moved to a predetermined position when the crushing roller 3 is removed and mounted. Therefore, it is possible to perform the operations in parallel without performing the operations one by one, so that the work efficiency of the replacement operation of the crushing roller 3 can be dramatically improved. Further, since the mounting position and the shape of the roller carrying-in / out device 20 do not hinder the carrying-in / out operation of the crushing segment 6 after the crushing roller 3 is removed, the roller carrying-in / out before and after the replacing operation of the crushing segment 6 is performed. There is no need to remove and attach the device 20, and the process can be shortened accordingly.

Next, a procedure for replacing the crushing roller 3 and the crushing segment 6 according to the present embodiment will be described mainly with reference to FIG. First, cool air is fed from the air duct 7 to cool the vertical roller pulverizer (T ₁ ). In parallel with this, three roller carrying-in / out devices 20 are installed on the bottom surfaces of the respective installation holes 15 (T ₃ ′). Then, the mounting bolts of the inspection doors 21 _{1 to} 21 ₃ provided at three places on the side surface of the housing 1 are removed, and all are opened as shown in FIG. 4 (T ₂ ′). Then, through the opening of the inspection door 21 ₁ to 21 _3, coal lumps remaining in the vertical roller grinder, removed fines, etc., clean (T _6). Then, as shown in FIG. 3, after the cylinder of the respective roller loading and unloading device 20 so extended driven, bolted to the bolt mounting portion 20a to the roller bracket 11 parts of each grinding roller 3 (T _7).

Thereafter, the link support and the strap plate are removed, and each roller bracket 11 is attached to the pressing frame 13.
Remove the fixed to that bolt (T _8), the roller bracket 11 is separated from the pressure frame 13, lift the pressure frame 13 in the pressure cylinder 5 (T _9). Next, as shown in FIG. 5, each of the roller carrying-in / out devices 20 is driven to reduce and each of the crushing rollers 3 is attached to the bolt mounting portion 20.
Rotate outward around the rotation fulcrum a and take it out of the machine (T ₁₀ ). Thus, the three crushing rollers 3 can be carried out of the machine almost simultaneously. The fixing roller of the roller bracket 11 is removed and the crushing roller 3 released is held by the hanging jig 29, and the crushing roller 3 is lifted by the monorail hoist 25 via the hanging jig 29 and moved to a predetermined position. Let it.

After the crushing rollers 3 have been removed in this manner, the bolt mounting portions 20 of the respective roller carrying-in / out devices 20
The vertical position of “a” is set so as not to hinder the work of loading and unloading the crushing segment 6. Therefore, as shown in FIGS. 6 and 7, a monorail 22 is mounted in an empty space between the turntable 2 and the rotary classifier 9 using a chain block.
Is installed (T ₁₂ ). Then, the bolt to which the cover cone 28 is attached is removed, and the cover cone 28 is removed from the turntable 2 (T ₁₃ ).

Next, successively remove the wedge bolt nut (not shown) securing the grinding segments 6 from the opening of the yoke, remove all of the wedge bolt (T _14). Then, the crush segment 6 is moved by the loading / unloading jig 23.
And the grinding segment 6 is lifted by the chain block 24 via the carrying-in / out jig 23,
It is carried out of the machine (T ₁₅ ). Thereafter, the next crushing segment 6 is lifted by the chain block 24 and carried out of the machine.
Similarly, the operation of carrying out the crushing segment is repeated.

Hereinafter, the rotary table of the new grinding segment 6 will be described.
Mounting to Bull 2 (T₁₆), Wedge bolt installation
(T_Fifteen), Attachment of the cover cone 28 to the turntable 2
Ke (T ₁₈) And removal of the monorail 22 (T₁₉Each)
Since the steps are the same as those in the conventional example, duplicate description will be omitted.
Thereafter, the new crushing rollers 3 are respectively suspended by the suspending jigs 29.
And lifted by the monorail hoist 25 to transport the rollers.
The grinding roller 3 is inserted into the bolt mounting portion 20a of the access device 20.
Fix the roller bracket 11 with bolts. And b
The roller loading / unloading device 20 is driven to extend and
The crushing roller 3 is rotated inward, and the inspection door 21 is rotated.₁ ~ 21_Three 
Into the machine through the opening of the roller bracket 11
Fix each to the pressure frame 13 with bolts
(T_{twenty one}'). Next, remove the link support and the strap plate.
(T_{twenty two}).

When the installation of the new crushing roller 3 is completed, all the inspection doors 21 _{1 to} 21 ₃ are closed (T ₂₄ ′), and each roller carrying-in / out device 20 is removed from the bottom of the installation hole 15. (T _23), crushing rollers 3
Then, a trial operation of the vertical roller crusher in which the crushing segment 6 is renewed is performed (T ₂₅ ), and it is confirmed that the crusher operates normally.

As described above, in the present embodiment, the step of preparing the lifting of the pressure frame 13 (T
_4), the mounting step (T ₅ of inching motor 26), 2 doses of steps, grinding roller 3 out after the end of the roller loading and unloading devices in repeated three times to step T ₇ through T ₁₀ of the grinding roller 3 out 20
Removing process (T ₁₁ ), and mounting process of the roller carrying-in / out device 20 prior to mounting process of the new crushing roller 3 (T ₂₀ )
In addition, since two steps of repeating the steps T ₂₁ and T ₂₂ of attaching the crushing roller 3 three times can be omitted, the time required for the replacement operation can be greatly reduced and the labor can be reduced. Further, since the lifting / lowering device 30 which is required in the conventional replacement work is not required, the cost of the construction equipment can be reduced.

In the present embodiment, when the crushing roller 3 is removed and loaded, the loading and unloading work is performed by the roller loading and unloading device 20.
The crush roller 3 is moved to a position where the replacement operation of the crush segment 6 is not hindered by the turning operation of the crush roller 3 in the vertical plane using the crush roller. A similar purpose can be achieved.

FIG. 9 is a side view of a vertical roller crusher showing a state where a roller carrying-in / out device according to another embodiment of the present invention is attached, and FIG. 10 is a state in which the rotary classifier is virtually removed. FIG. 11 is a plan view of a vertical roller crusher, FIG. 11 is a side view of the vertical roller crusher showing a state in which a crush roller is carried out,
FIG. 12 is a plan view of the vertical roller crusher in a state where the rotary classifier is virtually removed, FIG. 13 is a side view of the vertical roller crusher showing a state in which the crush segment is carried out, and FIG.
4 is a plan view of the vertical roller crusher with the rotary classifier virtually removed.

In these figures, 10 ₁ to 10 ₃ are attached to the bottom plate of the housing 1 by bolts, and three units are respectively set upright outside the pivots of the _three inspection doors 21 _{1 to} 21 _3. the roller loading and unloading device, 10a ₁ 10 a ₃ are those of the bolt mounting portion is provided in place of the roller loading and unloading device 20 in the previous embodiment, so that the serve equivalent and their functions. Other configurations are the same as those of the previous embodiment. In this embodiment, no installation holes are provided on the floor.

The operation of this embodiment, which is different from the previous embodiment, will be described below. As shown in FIG. 9, in parallel with the cooling process of the vertical roller crusher, three roller loading / unloading devices 10 ₁
~ 10 ₃ in the bottom plate of the housing 1, is installed as a horizontal position is outside the pivot point of the inspection door 21 ₁ to 21 _3. Then, after the inspection door 21 ₁ to 21 ₃ of the opening process and vertical roller mills internal cleaning process, the bolt mounting portion 10a of each roller loading and unloading device 10 to the roller bracket 11 parts of each grinding roller 3 Fix each with bolts. next,
After the step of attaching the link support and the strap plate and the step of lifting the pressurizing frame 13, as shown in FIG. Push it up,
The lower ends thereof are positioned higher than the lower ends of the openings of the inspection doors 21.

Then, as shown in FIGS. 11 and 12, each crushing roller 3 is connected to each roller carrying-in / out device 1 by a chain block.
It is rotated around the 0 rotation axis and carried out to a position away from the opening of the inspection door 21 outside the machine. Thus, the three grinding rollers 3 can be carried out of the machine almost simultaneously.
The unloaded crushing rollers 3 are those roller brackets 1
Each part is lifted by a monorail hoist 25 attached thereto and transported to a predetermined place. Hereinafter, after the process for replacing the crushing segment 6 starting with the installation of the monorail 22 and the carrying-in procedure of the crushing roller 3 which is the reverse procedure of the above-described unloading process to the outside of the machine, the trial operation of the vertical roller crusher is performed. Then, the replacement operation of the crushing roller 3 and the crushing segment 6 is completed.

As described above, in this embodiment, each roller carrying-in / out device 10 is disposed outside the rotation fulcrum of the opening of the inspection door 21, and when the crushing roller 3 is carried out, each crushing roller 3 is mounted outside the machine. Is rotated to a position distant from the opening of the inspection door 21, which may hinder installation and removal of the transport supply in the replacement operation of the crushing segment 6 in the subsequent process, and hinder the carrying in and out of the crushing segment 6. Absent.

[0032]

As described above, according to the present invention, in a vertical roller crusher, a plurality of pressure cylinders that support a pressure frame and press against a rotary table are surrounded by the vertical roller crusher. Because it is supported on the upper part of the housing, the wear parts can be replaced while the pressure cylinder is attached, and the opening end of each door is provided on the opposite part of all the crushing rollers of the housing so that it can be opened and closed. If a roller loading / unloading device is installed at the same time, and these are simultaneously driven to carry out the grinding roller out of the machine and carry it into the machine, all the grinding rollers can be replaced at the same time. If the position of the crushing roller before and after the unloading of the crushing roller does not hinder the loading and unloading of the crushing segment, the process of unloading and loading the roller loading / unloading device before and after the loading and unloading of the crushing segment can be omitted. Since it is possible, it can be performed efficiently in a short time replacement of wear parts.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic configuration of a vertical roller crusher according to an embodiment of the present invention.

FIG. 2 is a plan view of the vertical roller crusher with the upper rotary classifier virtually removed.

FIG. 3 is a side view of the vertical roller crusher in a state where the roller carrying-in / out device is attached.

FIG. 4 is a plan view in a state where the rotary classifier is virtually removed.

FIG. 5 is a side view of the vertical roller crusher showing how the crush roller is carried out.

FIG. 6 is a side view of a vertical roller crusher showing a state in which a crushing segment is carried out.

FIG. 7 is a plan view of the vertical roller crusher with the rotary classifier virtually removed.

FIG. 8 is a process sequence diagram showing a procedure for replacing a crush roller and a crush segment.

FIG. 9 is a side view of a vertical roller crusher showing a state where a roller carrying-in / out device according to another embodiment of the present invention is attached.

FIG. 10 is a plan view of the vertical roller crusher with the rotary classifier virtually removed.

FIG. 11 is a side view of the vertical roller crusher showing how the crush roller is carried out.

FIG. 12 is a plan view of the vertical roller crusher with the rotary classifier virtually removed.

FIG. 13 is a side view of the vertical roller crusher showing how the crush segment is carried out.

FIG. 14 is a plane view of a vertical roller pulverizer with the rotary classifier virtually removed.

FIG. 15 is a side view showing a schematic configuration of a vertical roller crusher according to a conventional example.

FIG. 16 is a plan view of the vertical roller crusher in a state where the upper rotary classifier is virtually removed.

FIG. 17 is a side view of the vertical roller crusher in a state where the roller carrying-in / out device and the elevating device are mounted.

FIG. 18 is a plan view of the vertical roller crusher with the rotary classifier virtually removed.

FIG. 19 is a side view of the vertical roller crusher showing how the crush roller is carried out.

FIG. 20 is a side view of a vertical roller pulverizer showing a state in which a pulverization segment is carried out.

FIG. 21 is a plan view of the vertical roller crusher with the rotary classifier virtually removed.

FIG. 22 is a process flow chart showing a procedure for exchanging a crush roller and a crush segment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Rotary table 3 Crush roller 5, 17 Pressure cylinder 6 Crush segment 8 Air blow-up port (air throat) 9 Rotary classifier (rotary separator) 10, 20 Roller loading / unloading device 10a, 20a Bolt mounting part 11 Roller bracket 13 Pressure Frame 14 Pressure Rod 15 Installation Hole 19 Mill Motor 21 Inspection Door 22 Monorail 24 Chain Block 25 Monorail Hoist 28 Cover Cone 29 Hanging Jig

Continuation of the front page (72) Inventor Kazunori Sato 3-36 Takara-cho, Kure-shi, Hiroshima Babcock Hitachi Kure Research Laboratory F-term (reference) 4D063 EE03 EE12 EE24 GA06 GA07 GA08 GB07

Claims (4)

[Claims] 1. A substantially disk-shaped rotary table driven and rotated by an electric motor, and a pressurizing frame disposed on an upper portion while being pressed by a concave groove formed in an annular shape on an outer peripheral upper surface of the rotary table. A plurality of crushing rollers rotatably supported in a pendulum state with respect to the rotary table, and a plurality of crushing rollers provided along a circumferential direction, and the plurality of crushing members rolling on the rotating groove and the plurality of crushing members on the rotary groove In a vertical roller pulverizer that was designed to pulverize the lump caught between the rollers,
A vertical roller crusher, wherein a plurality of pressure cylinders for supporting the pressure frame and pressing the rotary table are supported on an upper part of a housing surrounding the vertical roller crusher. 2. A door according to claim 1, wherein a door which can be opened and closed is provided at an opposing portion of all the crushing rollers of the housing as a carry-in / out port for carrying out and carrying in the crushing roller at the time of replacing the crushing roller. Characteristic vertical roller crusher. 3. The roller according to claim 2, wherein the roller is disposed outside the opening end of each door so as to support the crushing roller and carry out the crushing roller during the replacement operation of the crushing roller. The position of the grinding roller of the carrying-in / out device after the carrying-out and before carrying-in of the carrying-in / out device is a grinding unit that forms a concave groove portion. A vertical roller crusher characterized in that it does not hinder the loading and unloading of the material. 4. A concave groove formed in an annular shape on the outer peripheral upper surface of a rotating substantially disk-shaped rotary table, and is pressed while rolling on the concave groove, and is rotatable upward in a pendulum state. In a method of replacing a crushing roller of a vertical roller crusher, which is configured to crush a lump that is supported and is interposed between a plurality of crushing rollers provided along a circumferential direction, the method includes surrounding a vertical roller crusher. A roller carry-in / out device is provided outside the opening end of each door provided to be openable and closable at all the opposing portions of the crushing rollers of the housing, and the roller carrying-in / out devices are simultaneously driven to drive the crushing roller. A method of replacing a crush roller of a vertical roller crusher, wherein the crush roller is supported and carried out of the machine and carried into the machine.