JPH02180650A - Roll grinding device for crusher - Google Patents

Abstract

PURPOSE:To carry out crushing with high efficiency by sliding a grinding tool for grinding a roll surface on the roll surface in the width direction of diameter extension crossing rectangularly in the roll moving direction and moving said tool reciprocally in the axial direction of roll. CONSTITUTION:A base fed from above is crushed between a couple of rolls 2 and 3 facing each other and rotating facing inwardly, and at least the roll 2 is set to be able to make contact or separate with from the another roll 3. A grinding tool 43 for grinding the surface of the roll 2 is set slidably in touch with the surface of the roll 2 in the width direction of diameter D extension crossing rectangularly in the movable direction of the roll 2 and also movable reciprocally in the axial direction of the roll 2. As a result, crushing can be carried out with high efficiency at low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a base material crusher for crushing base materials such as earth clods, wood, rocks, etc. according to various uses.

[Prior art]

Various types of the above-mentioned crushers are known, from large to small machines, depending on the purpose.

Among these, the one shown in FIG. 5 is a typical general pulverizer for pulverizing soil and stones that serve as base materials for roof tiles, pottery, and the like.

The pulverizer consists of 2 rolls that rotate inwardly and facing each other.
During the 3rd period, when the base material supplied from above is pulverized,
A pulverizer is provided in which the other roll 2 is movably moved toward and away from one roll 3. The crushing part Z is perpendicular to the moving direction of the
It is biased toward the side and is provided so as to face the bottom width direction of the surface of the roll 2 and to be in sliding contact with it.

The scraper 15 is connected via a support shaft 31 to a press machine 6 whose arm 60 is composed of a pneumatic cylinder and a piston.
1, it is configured to be strongly pressed so as to be in constant sliding contact with the surface of the roll 2, so that it can follow the buffer movement of the roll 2 during the crushing operation and the adjustment of wear and tear of the roll 2.

[Problem that the invention seeks to solve]

Therefore, when the above-mentioned conventional crusher is operated and a base material W such as a clod is supplied from the supply section, the base material is finely crushed between the pair of rolls 2.3 and is discharged downwardly. However, the deposits V such as base material powder that have adhered to the roll 2 and are about to be carried around in the rotational direction are scraped off by the tip of the scraper 15.

However, due to the fact that the scraper 15 is in strong pressure and sliding contact with the roll 2, and due to the deposits (hard base material powder) that still adhere to the roll 2 passing between the scraper 15 and the roll 2, The blade surface is significantly worn, and as this wears away and becomes shorter, the scraper 15 presses and rotates about the support shaft 31 as shown by the dotted line.
The rake angle θ becomes large, increasing the rotational resistance of the roll 2, and eventually the tip of the scraper 15 bites into the roll 2, causing a problem of starting rotation failure of the roll.

On the other hand, the roll 2 moves violently back and forth (5 to 10 degrees) to buffer the load impact, especially when the base material ■ is supplied.
As a result of the fact that the base material is supplied intensively to the center part in the width direction and that the scraper 15 cannot follow this movement, as shown in FIG. is worn away and becomes concave.

When this state is reached, the deposits V are removed from the roll 2 and the scraper 1.
This scraper is difficult to remove between the scraper 15 and the scraper 5, which grinds the central parts of the two together, further accelerating wear and tear.
We were forced to replace all rolls (1 to 2 tons),
As a result, I was forced to perform the above-mentioned replacement work, which is complicated and harsh.
There was a serious drawback that significantly reduced work efficiency.

Therefore, in view of the above-mentioned circumstances, the present invention is equipped with a scraper, so that it is possible to always accurately remove deposits even from a movable roll, and while grinding the roll surface, it can be leveled with a polishing tool. The purpose of the present invention is to provide a roll polishing device for a crusher that is capable of high efficiency and low cost crushing work without unnecessary replacement of scrapers and rolls.

[Means to solve the problem]

To achieve the above object, the present invention provides a method for pulverizing a base material supplied from above between a pair of rolls that face each other and rotate inwardly, while at least one roll is in contact with the other roll. In a crusher that is movable and detachable, a polishing tool for polishing the surface of the roll is brought into sliding contact with the surface of the roll in the diameter extension width direction perpendicular to the movable direction of the roll, and in the axial direction of the roll. It is configured to move back and forth.

[For production]

Therefore, the crushing of the base material shaft by the crusher having the structure of the present invention is carried out by supplying the base material between the rolls 2 and 3 as in the past, but the base material powder that adheres to the rolls and is being carried around, etc. The deposits V are properly removed by a scraper 15 that is disposed oppositely in the middle direction of the roll surface on a diametrical extension perpendicular to the moving direction of the roll.

In other words, the scraper 15 will be able to move the scraper 15 even if the roll 2, which is movably supported in the opposing direction, moves violently back and forth due to the impact during processing of the base material.
Even if the roll 2 is adjusted to widen or narrow by moving the roll 2 back and forth at any time through the bearing 8 by operating the screw 9.9, the scraper 1
5 is near the extension of the diameter O, and the back surface 24 of the blade plate 20 always has a contact point P with the roll 2, so that the blade edge is not sharp, which is disadvantageous in terms of strength, and is a durable flat blade. Although the light 23 is formed and an ultra-hard blade part can be used in this part, it does not damage the roll 2 or prevent the roll 2 from moving back and forth, and the two do not violently collide. The roll 2 can be moved and rotated in a good manner at all times without any problems, and a good removal effect of deposits can be achieved with the roll 2 in a state with little wear.

In addition, even though the scraper 15 is lightly pressed by the pressing tool 34, the scooping angle θ formed by the two does not vary greatly, so the tip of the scraper 15 does not bite into the roll 2. The desired effect can be achieved while the roll 2 is always rotated smoothly.

In addition, in this state, the scraper 15 reciprocates in the axial direction, so that only the central part of the scraper 15 does not suffer uneven wear, and the entire width of the scraper 15 is uniformly polished.As a result, the roll It is also possible to prevent concave wear in the central portion of the two surfaces as much as possible.

In this way, according to the embodiment of the present invention, most of the deposits V are scraped off by the scraper 15, but the deposits V that are attached to the roll 2 and carried around are not brought into sliding contact with the upper part of the roll 2. Since the attached material V is removed more accurately by the grinding tool 43, it is possible to prevent the adhering matter V from being worn between the roll 2 and the scraper 15 by unnecessarily grinding the two. It is.

Further, the polishing tool 43 is provided above the roll 2 in the same manner as the scraper 15, and reciprocates in the axial direction, so that it is in contact with both sides of the roll 2 to properly polish it. In order to follow the abrasion of the center part of roll 2, roll 2
This is to keep the entire surface level.

〔Example〕

Embodiments of the present invention will be described based on the drawings.

Reference numeral 1 denotes a pulverizer for pulverizing materials such as roof tiles and pottery, which is equipped with the device of the present invention, and consists of pulverizers made of hard steel materials facing each other and rotating inwardly with a rotational difference inside the machine frame IA. Rolls (approximately 700 m in diameter, 700 m in width, and 1 to 2 tons in weight) 2.3 are supported by roll shafts 4, and pulleys 5 attached to each roll shaft 4 are rotated by a motor 7 via a belt 6. It becomes.

At least one of the rolls 2 has a bearing 8 attached to the machine frame IA in order to adjust the roll gap with respect to the other roll 3.
It is slidably supported by a guide 8A, and is stopped by a catch lO with a screw 9 via a buffer 11, so that the size of the substrate to be processed, the wear status of the rolls, or the impact M during the crushing process can be adjusted.
It is provided so as to be movable toward and away from the front and back directions of the arrows in order to respond to shocks in a timely manner.

12 and 13 are a hopper and a guide for guiding and supplying the base material to the crushing section 14, respectively.

Reference numeral 14 denotes a removing device for removing deposits such as base material powder W adhering to the roll 2.3, and includes a scraper 15 and has the following configuration.

That is, the scraper 15 has an appropriate number of blades made of a material harder than the material of the roll, in the direction of the inner width of the cutout of the mounting plate 19, which is removably attached to the substrate 16 via the mounting screws 17 and adjustment screws 18. A plate 20 is fixed with a fixing member 21, and the +7N20 blade has a sharp cutting edge with a flat blade light 23 with one rectangular corner removed and a portion of its vertical surface left as shown in FIG. are doing.

Then, this scraper 15 has a back surface 24 of its cutting edge on an extension of the diameter perpendicular to the movable direction of the roll 2,
It is provided so as to be brought into sliding contact with the lower surface of the roll 2 and to be reciprocated in the axial direction of the roll by a support mechanism 30 described below.

31 is a spline-formed support shaft supported between the machine frames 1 on both sides by bearings 32 and 32, and the machine frame I at the end of the shaft.
An arm 37 including a piston 35 of a pressing tool 34 pivoted to a pin IB implanted in A and a reciprocating tool 36 is provided, and the base of the substrate 16 is slidably fitted and supported on a support shaft 31. The scraper 15 is provided so as to be able to swing and press in the roll direction about the support shaft 31 and to be able to reciprocate in the axial direction.

Further, in the embodiment, the scraper 15 is
The range of reciprocating movement by the piston 38 of No. 6 is from the solid line position to the dotted line position in FIG. Care has been taken to prevent uneven wear of the scraper and roll over a long period of time.

Further, the removing device 114 configured as described above is installed in the machine frame I.
From the mounting hole 1c opened above and below A, the bearing 32.32
By removing it, you can easily and conveniently attach and detach it downwards.

40 is a polishing device according to the present invention provided above the roll 2, and its configuration is as follows:
0 is installed above the roll 2 in an inverted manner, and a polishing tool 43 is attached to a mounting portion 42 formed at the tip of the substrate 41, and the lower surface of the polishing tool 43 is attached to the roll 2. The support mechanism 30 is brought into sliding contact with the surface of the roll 2 on the extension of the diameter perpendicular to the movable direction of the support mechanism 30.
It is provided so that it can reciprocate in the width direction of the roll.

The range in which this polishing tool 43 reciprocates by the piston 38 of the reciprocating tool 36 is such that the width of the polishing tool 43 is approximately 1.5 mm, which is the width of two rolls.
Although it is set to 5 times the width, it is approximately half the width of two rolls, and consideration has been made to prevent uneven wear of the polishing tool and the roll over a long period of time.

The entire polishing device 40 configured as described above can be easily attached and detached upward by removing the bearings 32 and 32 from the mounting hole 1d formed above the machine frame IA.
Further, the polishing tool 43 itself opens the cover lI45 provided on the machine frame IA above it, and the mounting tool 44 of the mounting portion 42 is opened.
It is conveniently configured so that it can be installed and removed independently from outside the machine by operating the .

Note that the above-mentioned removing device and polishing device are the same as the other roll 3.
It goes without saying that it may also be provided in the same way, and in this case,
Further improvements in ease of use and performance of the device can be expected.

Moreover, it is economical to use an existing tile material as support instead of a special grindstone for the polishing tool 43.

Next, the grinding operation using the apparatus of the present invention, which will be described in detail above, is carried out in the following manner.

First, when the motor 7.7 is rotated, the rolls 2.3 are rotated vigorously inwardly relative to each other. Next, when the base material is fed into the hopper 12, the base material is guided by the guide 13, reaches the crushing section Z, is properly crushed between the rolls 2.3, and is discharged downward to continue the crushing operation. continues.

In the above operation, the deposits V such as base material powder adhering to the roll 2 are removed by the scraper 15, and the deposits V that remain are removed by the upper polishing tool 43.

At this time, the scraper 15 and the polishing tool 43 are attached to a pressing tool 34 and a reciprocating tool 36 provided on the respective support mechanisms 30 and 30.
The pneumatically operated pistons 35 and 38 reciprocate in the axial direction at an appropriate speed while slidingly contacting the surface of the roll 2 with an appropriate pressure. Even if the polishing tool 43 wears out, the pressing tool 34 can follow it downward with an appropriate pressure, and the polishing tool 43 can be fed out by operating the attachment tool 44.

〔Effect of the invention〕

As explained above, in the present invention, when a hard, viscous, and lumpy base material such as a roof tile or ceramic base material is pulverized, a roll that moves back and forth is used. Even in the case of a crusher in which the polishing tools are installed oppositely from the fixed machine frame, the polishing of the rolls can always be performed well during the crushing work even though the rolls move back and forth, and
When adjusting the gap between the processing sections, the polishing tool remains installed in the machine frame without any special adjustment, which has the advantage of simplifying the installation of the polishing tool and the construction of the entire device.

The polishing tool may come into contact with the roll with excessive pressure, or
Since it is not subjected to impact, the polishing tool will not be damaged and the polishing tool will not interfere with the rotation of the roll, promoting smooth rotation of the roll and minimizing uneven wear on both the roll and the scraper. You can do less.

In addition, since the polishing tool reciprocates in the width direction at the above position, it can properly polish both sides of the roll, form and maintain a uniform roll surface, and remove deposits properly. This enables trouble-free and good grinding work to be continued for a long period of time.

As a result, the crusher according to the present invention can extremely reduce the need to replace the rolls and scrapers, which are expensive and heavy, and can greatly reduce the crushing cost, while also eliminating the troublesome and harsh replacement work described above. It has achieved remarkable effects by eliminating as much of the problem as possible and making highly efficient continuous work possible.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the main parts showing the relationship between the roll and the polishing device. Figure 2 is an overall side view of a crusher equipped with the device of the present invention;
The figure is a side sectional view showing the main parts, and FIG. 4 is an enlarged side sectional view of the scraper. FIG. 5 is a side view of the conventional example corresponding to FIG.
The figure is a cross-sectional view showing the action taken along the line A--A in FIG. W ・ 1 ・ 14 ・ 15 ・ 40・・Base material V・・Adherence D・・Diameter・Crusher
2.3... Roll/removal device 30... Support mechanism/scraper 43... Polishing tool/polishing device

Claims (1)

[Claims] In a pulverizer in which a base material supplied from above is pulverized between a pair of rolls facing each other and rotating inwardly, at least one roll is movable toward and away from the other roll, a polishing tool for polishing the roll surface in a diameter extension width direction perpendicular to the movable direction of the roll,
A roll polishing device for a pulverizer, characterized in that it is provided to slide on the surface of the roll and to reciprocate in the axial direction of the roll.