KR100756419B1 - Refresh aggregate production method using hp 300-crasher having high-speed countershaft - Google Patents

Abstract

A recycled aggregate production method using an HP(Horsepower) 300-crusher with high rotational speed is provided to make the waste crushing speed fast by keeping high vibration amplitude and high RPM(Revolution Per Minute) of a mantle by keeping the rotational speed of a counter shaft at 900~1200 RPM. A recycled aggregate production method using an HP 300-crusher with high rotational speed comprises the steps of: pouring raw aggregate crushed in the size of 5~50mm into the pretreatment equipment, through a raw material input hopper; transferring the raw material to an aggregate storing hopper through an aggregate transfer conveyor A; transferring the raw material to the HP 300-crusher by an aggregate transfer conveyor B and crushing the raw material to provide crushed sand of 0.8~5mm; removing mortar components contained in the crushed sand by keeping the rotational speed of a counter shaft(50) eccentrically rotating a mantle of a cone crusher, at 1000~1100RPM; sending the crushed material to an aggregate cleaning water tank by an aggregate transfer conveyor C and then cleaning the crushed material; and producing the crushed sand of 0.8~5mm by separating the cleaned aggregate through a cleaned aggregate transfer elevator in a screen aggregate classifier, according to the grain size. The HP 300-crusher comprises an eccentric sleeve(20) installed in a cylindrical main frame; a cap frame equipped with a cone cave(42) and an input hopper(41) and mounted at the upper end of the main frame; the counter shaft having a pulley(51) connected to the motor through a belt and a pinion gear(52) engaged with a bevel gear(21) of the eccentric sleeve in the main frame; a main shaft(30) disposed in the eccentric sleeve and eccentrically turned by the rotation of the bevel gear; and a mantle core(31) mounted at the upper part of the main shaft to install a mantle(32).

Description

Refresh aggregate production method using HP 300-crasher having high-speed countershaft}

1: Crushed sand production system that can be applied to the present application

2: Exterior side view of the HP 300 crasher provided herein.

3: Internal cross section of the HP 300 Crasher.

******* Explanation of the main signs in the drawings *******

10: main frame 20: eccentric sleeve

21: Bevel Gear 22: Balance Weight Guard

30: main shaft 31: mantle core

32: mantle 33: rock bolt

40: cap frame 41: feed hopper

42: concave 50: counter shaft

51: Pulley 52: Pinion Gear

60: discharge chute

The present invention relates to a method and apparatus for producing recycled sand using construction waste, which is intended to provide a recycled aggregate having a quality that satisfies one kind of Korean Industrial Standard (KS F 2573) by crushing construction waste.

We break down 100,000 tons of construction waste every day to produce aggregates equivalent to recycled aggregate grade 1 of the Korean Industrial Standards, and recycle them into insufficient domestic aggregate resources. I started with the task I wanted to solve

The present invention relates to a method of producing recycled aggregates, in particular, to produce sand by crushing construction waste, and more particularly, to reduce aggregate quality by using an HP 300 crusher having a counter shaft having a rotational speed of 900 to 1200 rpm. The present invention relates to a method for producing recycled aggregates to efficiently remove the mortar component that causes the production of high quality crushed sand.

In the present application, the HP 300 crasher is a modified version of the cone crasher, which is commonly used in Korea by importing some parts from abroad and is adapted for the production of circulating aggregates. It is a device that crushes aggregate through, and the aggregate that enters between the mantle and concave rotating the core is crushed by the eccentric rotation of the mantle to produce small sand particles (hereinafter referred to as HP 300 Crasher). ).

Looking at the technology related to the cone crusher for shredding the construction waste of the prior art, Korean Patent Registration No. 0377871 "concrete with automatic discharge of foreign substances and automatic clearance adjustment" is disclosed, the patent invention is a hydraulic cylinder and There is a technical idea that it is possible to automatically discharge when foreign matter enters aggregate that is not broken by using the cumulator and to easily adjust the gap between the mantle and the concave.

However, the conventional cone crusher is not enough to handle large amounts of aggregates in a short period of time because the counter shaft's rotational speed is only about 500-600 rpm, so the mantle is not vibrating fast and lacks the ability to crush aggregates. In conventional corn crushers, it is difficult to crush, and it is difficult to crush aggregates such as construction waste, which has a lot of debris. there was.

In addition, when eccentric rotation, the mantle that fractures and shreds aggregates during the eccentric rotation or when repair is needed, the mantle must be replaced only by tearing off the entire crasher including the concave.

Therefore, we started with the task of producing high-quality crushed sand with high production efficiency that was difficult to achieve in the conventional corn crusher and removing and separating the foreign substances and malta contained in the crushed sand from sand particles efficiently. Invention.

More specifically, the vibration of the mantle while injecting a certain amount of recycled aggregate into the HP 300 crasher of the present application in order to remove the factors that degrade the aggregate or sand quality of the mortar paste component attached to the aggregate or sand obtained from construction wastes It is intended to provide a method for producing a crushed sand to provide a high quality crushed sand by removing the mortar paste components attached to the aggregate or sand by giving a close contact and twisting pressure between the recycled aggregate particles filled inside the mantle by speeding up.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention preferably configured as a specific implementation means for achieving the above object.

In general, the present invention is intended to show a crushed sand production system that can be applied to the present application as a pretreatment facility for producing crushed sand.

Generally, a large amount of mortar paste is entangled with aggregate in the aggregate raw material that is shredded about 5 ~ 50 mm in the pretreatment facility of pure pure aggregate, and various foreign substances such as waste wood, waste vinyl, nonwoven fabric or cloth, styrofoam granule, etc. Excessive amounts of soil powder have been mixed and introduced over about 5%, and a system for crushing them again and providing them as a crushed sand having a size of about 0.8 to 5 mm is shown.

Referring to the embodiment shown in Figure 1 applied to the system of the present invention, the aggregate material to be treated in the pretreatment facility about 5 ~ 50 mm in size is introduced through the raw material input hopper (1), The raw material to be treated is transferred to the aggregate storage hopper 3 through the aggregate transport conveyor A (2), and is broken down to a smaller particle size among the stocks of the aggregate storage hopper 3 and provided as a crushed sand having a size of about 0.8 to 5 mm. The raw materials to be treated are transferred to the aggregate crusher HP 300 crusher 100 by the aggregate transport conveyor B (4) and subjected to the crushing step, and the crushed matter is again collected through the aggregate transport conveyor C (5). 6) flowed into the washing step, the washed aggregate is separated by the particle size in the screen aggregate classifier (8) through the washing aggregate transfer elevator (7) to obtain a crushed sand of about 0.8 ~ 5 mm size and fine aggregates of 5 mm or more Back circle Crushed In the system of recycling to a hopper (1) may be provided with a sand.

The present invention uses the HP 300 crusher of the present invention to remove the deterioration of the sand quality of the mortar paste component attached to the aggregate (sand) obtained from construction waste, while maintaining the amount of the aggregate aggregate while maintaining the vibration of the mantle It is characterized in that the part to provide a high-quality crushed sand by removing the mortar paste components attached to the aggregate or sand by giving the close contact and twisting pressure between the aggregates to be treated inside the mantle quickly, bar provided in FIG. Figure 3 shows a side view of the HP 300 crasher and Figure 3 shows an internal cross-sectional view of the HP 300 crasher.

The HP 300 crasher of the present application is provided with an eccentric sleeve 20 into the cylindrical mainframe 10 and a cap frame 40 having a concave 42 and an input hopper 41 at the top of the mainframe. It is installed, the pulley 51 which is connected to the motor using a belt at the outer side of the main frame is provided, and the other end has a pinion gear 52 engaged with the bevel gear 21 of the eccentric sleeve 20 inside the main frame. The provided counter shaft 50 is installed, and the main shaft 30 which is eccentrically rotated by the rotation of the bevel gear 21 is provided inside the eccentric sleeve, and the mantle 32 is mounted to the upper portion of the main shaft. It has a structure in which the mantle core 31 which can be provided is provided.

After the mantle 32 is mounted on the mantle core 31, the mantle can be fixedly installed by fastening the lock bolt 33 through the screw hole drilled to the upper end of the main shaft.

The unlocking direction of the lock bolt 33 is preferably to prevent the loosening during the rotation of the mantle in the opposite direction of the rotation of the mantle, when replacing the mantle, loosen the lock bolt, lift the mantle and then insert a new mantle and lock bolt By refastening it has the advantage that it is easy to replace the mantle.

The mantle 32 is oscillated by eccentric rotation in accordance with the rotation of the main shaft of the inclined form of the central axis, wherein the gap between the mantle 32 and the concave 42 is narrowed or widened therebetween Will act to crush.

When the counter shaft is rotated through the pulley rotating by the power of the motor, the bevel gear of the eccentric sleeve is engaged with the pinion gear caught on the end of the counter shaft so that the eccentric sleeve is eccentrically rotated, and the shaft is tilted in the center of the eccentric sleeve. As the main shaft is eccentrically rotated together with the eccentric sleeve, the mantle 32 mounted on the mantle core 31 of the main shaft is eccentrically rotated to generate a fracture effect.

When the aggregate is put into the input hopper 41, the aggregate is sandwiched between the mantle and the concave, and when the mantle is closed, the aggregate is squeezed into pieces of sand particles and dropped to the discharge chute 50 when the mantle is closed. Discharged.

It is preferable that the balance weight guard 22 is provided in order to prevent the sand discharged | emitted by falling and entering into a main shaft or a counter shaft.

In particular, by increasing the rotation speed of the counter shaft 50 to 900 ~ 1200 rpm, if the mantle is rotated faster, a large amount of processing is possible in a short time, as well as foreign matter such as mortar from sand produced by crushing from aggregate It is a completed invention confirming the fact that it is easily removed.

[Example]

Physical properties of the crushed sand produced using the HP 300 Crasher structure of the present application was measured by KS F 2504, the results are as follows.

Particles of 0.08 mm or less, which is the standard of the crushed sand raw material, were removed in advance and measured on sand particles having a size of -5 + 0.08 mm. During the experimental conditions, the rotation speed of the counter shaft 30 was adjusted to 900 to 1200 rpm, and the fine particles (-0.08 mm) generated during the regeneration were removed by dry classification.

Table-1. Characteristics of Crushed Sand Produced

Product Name Production rate (wt.%) Absorption rate (wt.%) Dry weight (gr./cm 3) Remarks Raw material 100.00 7.49 2.22 -5 + 0.08 mm Crushed Sand 83.8 4.45 2.36 -5 + 0.08 mm Particulate 16.2 22.11 1.55 -0.08 mm

* Absorption rate and dry weight of the raw materials put into the HP 300 Crasher of the present application was 7.49wt.% And 2.22gr./cm 3, respectively. The absorption rate and the specific gravity of the recycled fine aggregate from which mortar was removed by injecting the construction waste having this characteristic into the HP 300 Krasher, which is a fine aggregate recycling device, were 4.45 wt.% And 2.36 gr./cm3, respectively. It can be seen that it exhibits physical properties that comply with the specifications of circulating fine aggregates.

This technology is easy to apply in the field and the production efficiency of crushed sand is considered to have a great influence on crushed sand production.

[Comparative Example]

Although it is difficult to directly compare the technology of the cone crusher with the rotation speed used at home and abroad about 500-600 rpm and the HP 300 crasher of the present application, the cone crusher with the 500-600 rpm installed in the applicant company The physical properties of the product produced by varying the rotational speed of the HP 300 Crashers were described.

division Item Density (g / cm 3) Absorption rate (wt.%) Remarks Existing technology Crushed Sand 1.9-2.2 5.8 500 rpm   Applied Technology (Applied HP 300 Crasher) Crushed Sand 2.39 4.6 800 rpm Crushed Sand 2.43 4.45 1000 rpm Crushed Sand 2.42 4.42 1200 rpm Crushed Sand 2.40 4.5 1300 rpm

When the present invention is used to produce sand by crushing construction waste, the rotation speed of the counter shaft is about 900 to 1200 rpm, and the vibration speed of the mantle is high and the rotational speed is high, so the speed of crushing construction waste is high. Foreign substances such as mortar can be easily removed.

Claims (2)

In the method for removing the mortar paste component from the crushed sand aggregate obtained from construction waste, Aggregate material to be treated to be shredded to a size of about 5 ~ 50 mm in the pretreatment facility through the raw material input hopper (1); Inflow of the raw material to be processed is transferred to the aggregate storage hopper (3) through the aggregate transport conveyor (A); The raw material to be treated to break into smaller granules of the aggregate storage hopper 3 and provide it as a crushed sand having a size of about 0.8 to 5 mm is aggregate aggregate crusher HP 300 crusher by the aggregate transport conveyor B (4). Transported to and shredded; The HP 300 crusher 100 is provided with an eccentric sleeve 20 into a cylindrical mainframe 10 and a cap frame 40 having a concave 42 and an input hopper 41 at an upper end of the mainframe. Is installed, the pulley 51 which is connected to the motor using a belt at the outer side of the main frame is provided and the other end is pinion gear 52 engaged with the bevel gear 21 of the eccentric sleeve 20 in the main frame The provided counter shaft 50 is installed, and the main shaft 30 which is eccentrically rotated by the rotation of the bevel gear 21 is provided inside the eccentric sleeve, and the mantle 32 is mounted on the top of the main shaft. A crushing step of having a structure in which the mantle core 31 is mounted, and removing the mortar component contained in the crushed sand by maintaining a rotational speed of the counter shaft for eccentrically rotating the mantle of the cone crasher at 1000 to 1100 rpm; The crushed material is washed again by being introduced into the foreign matter selection aggregate washing tank (6) through the aggregate transport conveyor (C) and washed; The washed aggregate is separated by the particle size in the screen aggregate classifier (8) through the washing aggregate transfer elevator 7 to obtain a crushed sand of about 0.8 ~ 5 mm in size; Regenerated aggregate production method characterized in that it is provided, including. delete

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