KR102451305B1 - Roll crusher - Google Patents

Abstract

The present invention relates to a roll crusher device, which comprises: an outer frame; an input hopper disposed on an upper portion of the external frame and inputting primarily crushed concrete chunks; cylindrical upper roll mills disposed below the input hopper, grinding the concrete lumps input from the input hopper by rotation, and horizontally spaced apart in plurality; cylindrical middle roll mills disposed below the upper roll mill, grinding the concrete chunks primarily ground from the upper roll mill by rotation, and horizontally spaced apart in plurality; and cylindrical intermediate roll mills disposed below the middle roll mill, grinding the concrete lumps primarily ground from the upper roll mill by rotation, and horizontally spaced apart in plurality. According to the present invention, secondary screening for selecting aggregates from the primarily crushed concrete through the roll mills arranged in multiple stages is possible.

Description

Roll crusher device {Roll crusher}

The present invention relates to a roll crusher device, and more particularly, to a roll crusher device used for crushing concrete.

The Reactor Containment Building of a nuclear power plant (nuclear power plant) is a concrete structure that contains safety-related devices and systems, and performs shielding and protection functions to prevent radioactive materials from leaking into the external environment from various accidents that may occur.

The containment building consists of a cylindrical wall, a dome, and a foundation slab, which are constructed of reinforced concrete structure. has become

In particular, the biological shielding wall of the reactor containment vessel is expected to have relatively high radiation compared to other systems due to continuous radiation by neutron flux, and the degree of radiation is expected to vary throughout the structure.

Radioactive concrete generated during nuclear decommissioning is largely divided into Surface Contaminated Concrete and Activated Concrete, and it has been confirmed in previous studies that almost all radionuclides exist in cement rather than aggregate.

As a result of the nuclear power plant dismantling concrete investigation, it was confirmed that most of the contamination is from cement, coarse and fine aggregates are not radioactive. .

Coarse aggregates and fine aggregates are recycled by removing the surface-attached mortar/paste to the recycling quality, and the paste (fine powder) is fired at 600℃ or lower and then used as a solidifying material for permanent disposal.

Even after the surface adhesion paste removal technology has been applied, if the fine aggregate exceeds the regulatory exclusion criteria, it can be used as a solidifying material for medium and low level waste disposal containers together with fine concrete powder. In this case, the strength that satisfies the acceptance criteria must be expressed.

When used as a solidifying material for medium/low level waste disposal containers after firing at 600°C, mix fine aggregate and cement-based solidifying material after 600°C firing as a solidifying material, or mix fine concrete powder with 10% cement-based solidifying material and mix with radioactive concrete fine aggregate. Consider a method for mixing together and using it to produce a solid.

Recyclable nuclear power plant dismantling concrete waste can be used for site restoration so that it can be recycled within the nuclear power plant site.

Non-radiative concrete fine powder and aggregate (clean aggregate) can be used for secondary concrete products such as shielding blocks in nuclear power plant sites, road pavement covering, and foundation mat filling.

Most of the contaminated materials can be selected only by mechanically grinding, heating, and pulverizing the dismantled concrete. Citing previous research results, it was confirmed that aggregates are non-radiative and cement with excellent absorbency is mainly contaminated. . Therefore, the technology of separating aggregates from the dismantled concrete is a technology that is the core of recycling of aggregates, and the development of such technology is urgent.

Korean Patent No. 1925261 (2018.11.28) Korean Patent Publication No. 1917568 (2018.11.05)

An object of the present invention is to provide a roll crusher device that is easy to remove and separate fine powder attached to aggregate by rubbing waste concrete in a plurality of rolls.

In order to achieve the above object, a roll crusher device according to an embodiment of the present invention includes an outer frame; an input hopper disposed on the upper portion of the outer frame and for putting in the first crushed concrete lumps; an upper roll mill of a cylindrical shape disposed at the lower side of the input hopper, grinding the concrete chunks input from the input hopper by rotation, and horizontally spaced apart from each other; A middle roll mill of a cylindrical shape disposed below the upper roll mill, grinding the concrete masses ground primarily from the upper roll mill by rotation, and horizontally spaced apart from each other in a plurality of shapes; And it is disposed below the middle roll mill, grinding the primary crushed concrete lumps from the upper roll mill by rotation, and includes a cylindrical middle roll mill arranged horizontally spaced apart in a plurality.

Here, a plurality of grooves may be formed on the outer peripheral surfaces of the upper roll mill, the middle roll mill, and the lower roll mill in the longitudinal direction to enhance the grinding force.

In addition, the spacing between the upper roll mill, the middle roll mill, and the lower roll mill may be narrower as going down from the upper roll mill to the lower roll mill.

In addition, the upper roll mill, the middle roll mill and the lower roll mill may include an ultrasonic wave generating unit or a heat generating member inside to strengthen the grinding force.

Furthermore, it may further include a driving member for driving the rotation of the upper roll mill, the middle roll mill and the lower roll mill.

In addition, the driving member may simultaneously drive the rotation of the upper roll mill, the middle roll mill and the lower roll mill by combining gears.

Furthermore, inclined partition walls may be provided on both inner sides of the outer frame to prevent concrete lumps from escaping to the outside of the upper roll mill, the middle roll mill, and the lower roll mill.

In addition, one side of the outer frame, the upper roll mill, the middle roll mill and the lower roll mill may include a transparent wall for observing the state of rotation and grinding.

In addition, the lower side of the outer frame, it may further include a transfer unit for transferring the aggregate and cement powder crushed by the lower roll mill to the outside.

According to the roll crusher device according to the embodiment of the present invention,

First, secondary sorting for sorting aggregates from primary crushed concrete is possible through a roll mill arranged in multiple stages.

Second, by forming a plurality of grooves on the outer peripheral surfaces of the upper roll mill, the middle roll mill, and the lower roll mill, the separation of aggregates is easy, and the grinding force can be strengthened.

Third, the spacing between the upper roll mill, the middle roll mill, and the lower roll mill is made narrower as it goes from the upper roll mill to the lower roll mill, so that finer cement paste can be ground.

Fourth, it is possible to strengthen the grinding force by providing an ultrasonic generating unit or a heating member inside the upper roll mill, the middle roll mill and the lower roll mill.

Fifth, including a driving member for driving the rotation of the upper roll mill, the middle roll mill and the lower roll mill, by combining gears, the rotation of the upper roll mill, the middle roll mill and the lower roll mill can be simultaneously driven.

Sixth, it is possible to prevent the concrete lumps from coming out of the upper roll mill, the middle roll mill and the lower roll mill by providing inclined bulkheads on both inner sides of the outer frame.

Seventh, the state of rotation and grinding of the upper roll mill, the middle roll mill and the lower roll mill can be observed by including a transparent wall on one side of the outer frame.

Eighth, it is possible to transfer the aggregate and cement powder crushed by the lower roll mill to the outside by including a transfer unit on the lower side of the outer frame.

1 is a front perspective view of a roll crusher device according to an embodiment of the present invention.
FIG. 2 is a rear perspective view of the roll crusher device shown in FIG. 1 .
3 is an exploded perspective view of the roll crusher device shown in FIG. 1 .
4 is a partially enlarged perspective view of the upper roll mill, the middle roll mill, and the lower roll mill shown in FIG. 3 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. At this time, it should be noted that in the accompanying drawings, the same components are denoted by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings.

Figure 1 is a front perspective view of a roll crusher device according to an embodiment of the present invention, Figure 2 is a rear perspective view of the roll crusher device shown in Figure 1, Figure 3 is an exploded perspective view of the roll crusher device shown in Figure 1, Figure 4 is It is a partially enlarged perspective view of the upper roll mill, the middle roll mill, and the lower roll mill shown in FIG. 3 .

1 to 4 , the roll crusher device includes an outer frame 100 , an input hopper 200 , an upper roll mill 300 , a middle roll mill 400 and a lower roll mill 500 .

As shown in Figure 1, the outer frame 100 is a configuration that forms the outer shell and skeleton of the roll crusher device. One side of the outer frame 100, the upper roll mill 300, the middle roll mill 400, and the lower roll mill 500 may include a transparent wall 120 for observing the state of rotation and grinding.

The input hopper 200 is disposed on the upper portion of the outer frame 100, and is a place where the crushed concrete chunks are primarily put. For the primary crushing of concrete chunks, a larger chunk of concrete can be crushed using a separate jaw crusher or the like.

The upper roll mill 300 has a cylindrical shape and is horizontally spaced apart from each other and disposed below the input hopper 200 to grind the concrete lumps input from the input hopper 200 by rotation.

Middle roll mill 400 is horizontally spaced apart in a plurality of cylindrical shape, is disposed below the upper roll mill 300, the primary crushed concrete masses from the upper roll mill 300 are ground by rotation. . The middle roll mill 400 may be used in one stage, or may be used in multiple stages as shown in the drawings.

The lower roll mill 500 is horizontally spaced apart in a cylindrical shape, and is disposed below the middle roll mill 400 and grinds the secondary crushed concrete lumps from the middle roll mill 400 by rotation. .

The aggregate and cement powder are crushed to a sufficient degree through the lower roll mill 500 and separated.

Here, as shown in FIG. 4, a plurality of grooves 310, 410, and 510 in the longitudinal direction in order to strengthen the grinding force on the outer peripheral surfaces of the upper roll mill 300, the middle roll mill 400 and the lower roll mill 500. this is formed At this time, the spacing (d1, d2, d3, d4) of the upper roll mill 300, the middle roll mill 400 and the lower roll mill 500 is from the upper roll mill 300 to the lower roll mill 500. The lower you go, the narrower it gets.

In addition, the upper roll mill 300 , the middle roll mill 400 , and the lower roll mill 500 may include an ultrasonic wave generating unit or a heat generating member (not shown) inside to strengthen the grinding force.

On the other hand, as shown in FIGS. 2 and 3 , a driving member 600 for driving the rotation of the upper roll mill 300 , the middle roll mill 400 and the lower roll mill 500 may be further included.

Here, the driving member 600 may simultaneously drive the rotation of the upper roll mill 300 , the middle roll mill 400 and the lower roll mill 500 by combining the gears 610 as shown in FIG. 4 . .

As shown in Figure 3, both inside of the outer frame 100 are inclined bulkheads ( 110) may be provided.

The aggregate and cement powder ground by the lower roll mill 500 are discharged to the outside through the transfer unit 700, and the cement powder is ground into finer particles by a separately provided ball mill.

As such, according to the present invention, secondary sorting for sorting aggregates from primary crushed concrete through a roll mill arranged in multiple stages is possible.

On the other hand, the embodiments of the present invention disclosed in the present specification and drawings are only presented as specific examples to easily explain the technical contents of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those of ordinary skill in the art to which the present invention pertains that other modifications based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

100...outer frame
200...input hopper
300...top roll mill
400...suspended roll mill
500...bottom roll mill
600...drive member

Claims (9)

outer frame;
an input hopper disposed on the upper portion of the outer frame and for inputting the primarily crushed concrete chunks;
an upper roll mill of a cylindrical shape disposed at the lower side of the input hopper, grinding the concrete chunks input from the input hopper by rotation, and horizontally spaced apart from each other;
A middle roll mill of a cylindrical shape disposed below the upper roll mill, grinding the concrete masses ground primarily from the upper roll mill by rotation, and horizontally spaced apart from each other in a plurality of shapes; and
It is disposed on the lower side of the middle roll mill, and grinds the secondary crushed concrete lumps from the middle roll mill by rotation, and includes a lower roll mill of a cylindrical shape that is horizontally spaced apart from each other in a plurality,
The upper roll mill, the middle roll mill and the lower roll mill are provided with a heating member inside to strengthen the grinding force,
A plurality of grooves are formed in the outer peripheral surfaces of the upper roll mill, the middle roll mill and the lower roll mill in the longitudinal direction to strengthen the grinding force,
The distance between the upper roll mill, the middle roll mill and the lower roll mill is,
It becomes narrower from the upper roll mill to the lower roll mill,
Further comprising a driving member for driving the rotation of the upper roll mill, the middle roll mill and the lower roll mill,
The driving member is
Combining gears to simultaneously drive the rotation of the upper roll mill, the middle roll mill and the lower roll mill,
On both sides of the outer frame,
An inclined bulkhead is provided to prevent concrete lumps from coming out of the upper roll mill, the middle roll mill and the lower roll mill,
On one side of the outer frame,
A transparent wall for observing the rotation and grinding state of the upper roll mill, the middle roll mill and the lower roll mill,
On the lower side of the outer frame,
Roll crusher device, characterized in that it further comprises a conveying unit for conveying the aggregate and cement powder crushed by the lower roll mill to the outside.
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