KR20130078614A - Peeling off and shape improvemnet device for recyclinggravels - Google Patents

Abstract

PURPOSE: A circulating aggregate grinder for surface flaking and grain shape improvement by striking is provided to strike an aggregate by using a large grinding ball with a larger strength than an aggregate and also using falling energy and collision energy of the aggregate, thereby clearly flaking the mortar on the surface of the aggregate and improving the grain shape of the aggregate. CONSTITUTION: A circulating aggregate grinder for surface flaking and grain shape improvement by striking comprises a grinding case (10), a rotary unit, partition walls (20, 30, 40), a grinding ball (1) and a bucket (50). The grinding case is hollow inside and has an inlet and an outlet on both sides of the case in the longitudinal direction respectively. The rotary unit rotates the grinding case. The partition walls are formed inside the grinding case and the grinding case is divided into two or more grinding units. The grinding ball is put into the grinding units of the grinding case. The grinding ball applies a physical impact to the aggregate which is put into the grinding units and peels off the mortar on the surface of the aggregate. The bucket is formed at the inner periphery of the grinding case. The bucket compulsorily rotates the grinding ball in the grinding units of the grinding case and drops the grinding ball from the top to the lower part.

Description

TECHNICAL FIELD [0001] The present invention relates to a peeling off and shaper impregnated aggregate grinding apparatus capable of peeling a surface and improving the shape of a grain by blowing,

More particularly, the present invention relates to a method for producing a high quality recycled aggregate by separating mortar and the like from the surface of an aggregate produced through a pretreatment process such as crushing, To a recycled aggregate grinding machine capable of producing a high-quality recycled aggregate and capable of improving the surface separation and the shape of the grain by impact.

High-rise, large-scale facilities and Dongdong houses, which were built during the high growth period since economic development, are now being redeveloped and reconstructed. The demand for new construction for housing supply is also steadily increasing, and a rapid increase in the amount of construction waste is inevitable reality. According to the Ministry of Environment 's press release in 2000, the amount of construction waste accounted for 34% of total industrial waste, and the amount of waste concrete increased from 23,577 tons / day in 1996 to 71,063 tons / day in 2000. 99,900 tons / day in 2010 and 289,470 tons / day in 2020 are estimated to occur.

Construction wastes are different from municipal wastes and industrial wastes. And the characteristics are different according to the step that is generated. Construction wastes are very bulky and heavy and require huge transport and landfill costs during transportation and landfilling. They are inconsistent throughout the year and occur in large quantities at certain times of reconstruction. The construction waste is recycled by more than 80% through intermediary processing companies, but the recycling rate is actually lower due to the quality problem of the produced aggregate and the problem of the user's recognition.

Accordingly, in case of the application of the law related to the contract with the state party, it is necessary to use the recycled aggregate for the owner. In December 2003, the "Act on the Promotion of Construction Waste Recycling" In August, "Recycled aggregate quality standard" was finalized, and since January 1, 2007, recycled aggregate quality certification was carried out. As a result, recycled aggregate producers increased the quality of recycled aggregate and construction companies promoted recycling of recycled aggregate. An institutional basis for the development of development has been established.

The technique of producing aggregate from conventional wastes has been the main process of crushing. Therefore, a large amount of mortar (such as cement paste, etc.) remains on the surface of the aggregate, .

Therefore, there is a method of using chemicals to remove the mortar on the surface of the aggregate, a polishing machine using physical force, and the like.

The method of using the chemical agent causes environmental pollution caused by the chemical agent, and it is necessary to further improve the shape of the mouthpiece because the mouthpiece can not be improved to the spherical shape. The method using the grinder is to prevent the environmental pollution caused by the chemical agent But there is a problem that the peeling efficiency is deteriorated because it is a single method of applying physical impact (mutual impact, etc.) to the aggregate.

Korean Patent Publication No. 10-1043063 Korean Patent Publication No. 10-1005622

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method for producing recycled aggregate of high quality by separating mortar or the like from the surface of an aggregate produced through pretreatment such as crushing, The present invention provides a recycled aggregate grinding machine capable of producing a high quality recycled aggregate through multi-stage grinding and capable of improving the surface peeling and the grain shape by a blow.

The present invention provides a recycled aggregate grinding machine capable of surface separation and improvement in shape by a striking according to the present invention comprises a polishing case having a hollow interior and an inlet and an outlet formed at both sides in the longitudinal direction; Rotating means for rotating the polishing case; At least one partition wall formed inside the polishing case to divide the polishing case into two or more polishing sections and transferring the mortar and the circulated aggregate polished in the polishing section; A grinding ball which is introduced into the grinding portion of the grinding case and drops down from the upper portion to the lower portion by the rotation of the grinding case to exert a physical impact on the aggregate put into the grinding portion to peel the mortar on the surface of the aggregate, ; And one or more buckets formed on the inner circumferential surface of the case for rotating the grinding ball and the aggregate in the grinding portion of the grinding machine case and dropping the grinding ball from the upper portion to the lower portion.

According to the recycled aggregate grinding machine capable of peeling off the surface and improving the shape by impact according to the present invention, the aggregate is struck by using the falling energy and impact energy of the abrasive balls (such as metal balls) It is possible to produce the spherical recycled aggregate without any foreign substance and thus the usefulness of the recycled aggregate is increased and it can be used in various fields such as the roadside auxiliary material. Therefore, the value added by the recycled aggregate can be increased And additionally, it is possible to reduce the incidental cost for the treatment of the recycled aggregate.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a recycled aggregate polishing machine capable of surface separation and improvement in shape by impact according to the present invention. FIG.
Fig. 2 is a front view of a circulating aggregate polishing machine capable of surface separation and improvement in shape by impact according to the present invention; Fig.
3 is a side view of a recycled aggregate grinding machine capable of surface separation and edge improvement by impact according to the present invention.
Fig. 4 and Fig. 5 are diagrams of a partition wall applied to a recycled aggregate grinding machine capable of surface separation and improvement in shape by impact according to the present invention, respectively. Fig.
Fig. 6 is another example of a circulating aggregate grinding machine capable of surface peeling and shape improvement by impact according to the present invention. Fig.

As shown in FIGS. 1 to 3, the recycled aggregate grinding machine 100 capable of performing the surface peeling and the shape improvement by the impact according to the present invention includes a grinding ball 1 (having a strength greater than that of the aggregate 2, for example, (Which is defined as polishing the mortar 3 on the aggregate surface and improving the shape of the aggregate) by physical collision of the aggregate. The polishing case 10, the polishing case 10 ), And a polishing ball (1).

The polishing case 10 has a cylindrical structure having an inlet and an outlet for an aggregate on both sides in the longitudinal direction, and has at least one (three of which are shown and exemplified) (11, 12, 13).

The first to third polishing portions 11, 12, and 13 are partitioned by the first, second, and third barrier ribs 20, 30, and 40 (depending on the number of the polishing portions) And the third partition wall 40 is provided at the discharge port of the polishing case 10 so as to partition the first to third polishing portions 11, 2) and the mortar (3).

The first to third polishing units 11, 12 and 13 are provided with a polishing ball input port and a cover (not shown) for opening and closing the polishing ball input port, respectively, 11a, 12a, and 13a. The covers 11a, 12a, and 13a are all capable of opening and closing the polishing ball input port (hinged, slide type, etc.), and thus a detailed description thereof will be omitted.

Although not shown in the drawing, the grinding ball 1, the aggregate 2, and the mortar 3, which are put into the first grinding portion 11, are dropped through the grinding hole 10a of the grinding case 10, The door can be installed. The door is advantageous in that it can prevent the grinding ball 1 from escaping and can shield the noise generated during grinding.

The polishing case 10 may be made of steel or the like which is not deformed by the impact energy generated when the abrasive ball 1 and the aggregate 2 are dropped, and the inner wall surface may be lined with a high strength material such as high manganese.

Although the first to third polishing units 11, 12 and 13 are shown as being integrated with each other in the polishing case 10, the first to third polishing units 11, 12, So that the polishing case 10 can be constructed. In this case, there is an effect that the maintenance cost can be reduced by selecting and repairing only a part of the plurality of polishing parts 11, 12, 13 that is required to be repaired.

Until now, the grinding case 10 has a configuration in which there is no hole communicating between the inside and the outside (the aggregate 2 polished in the third polishing part 13 and the hole for discharging the mortar 3 (the third conveying part 41 This specification has the effect of shielding the noise generated during the grinding of the aggregate 2, but it is a disadvantage that the aggregate 2 and the mortar 3 must be subjected to a screening process .

6, the polishing case 10 is formed with a discharge hole 10a of the mortar 3 so that the mortar 3 can be selected simultaneously with the polishing of the aggregate 2 by the grinding ball 1 . Since the noise generated during polishing through the discharge hole 10a of the mortar 3 may be discharged to the outside, the discharge hole 10a of the mortar 3 is preferably not too large, An openable and removable collection box 14 may be provided outside the discharge hole 10a of the discharge port 10a so as to block the noise through the collection box 14 and collect the mortar 3 easily.

The rotating means of the polishing case 10 is for rotating the polishing case 10. The motor 10 rotates the polishing case 10 by rotating the motor 10 by means of a motor, (Timing belt, chain or the like).

The first to third partition walls 20, 30 and 40 partition the first to third grinding portions 11, 12 and 13 to lengthen the collision residence time between the grinding ball 1 and the aggregate 2 , The aggregate (2) and the mortar (3) are conveyed toward the discharge port.

Since the first to third barrier ribs 20, 30, and 40 have the same configuration, a specific configuration will be described taking the first barrier rib 20 as an example.

2, 4, and 5, the first partition 20 is a plate-like shape having the same outer shape as the inner peripheral surface of the polishing case 10, and at least one first transfer portion 21 1, and Fig. 5 is shown as two).

The first transfer part 21 is formed at intervals such that the aggregate 2 and the mortar 3 can pass while the abrasive ball 1 in each of the abrasive parts 11, The diameter d of the first transfer section 21, the diameter r of the abrasive ball 1, the particle size s1 of the aggregate 2 (the aggregate in a state in which the mortar 3 is peeled off) The diameter r of the abrasive ball 1 is preferably not less than twice the particle size s1 of the aggregate 2. It is preferable that the size s2 of the abrasive balls 1 is s2 <s1 <d <r.

The shape of the first bank 20 may vary depending on the inclination of the polishing case 10.

That is, the polishing case 10 may be configured to be horizontal or inclined (inclined downward toward the discharge port).

The aggregate 2 and the mortar 3 are transferred toward the discharge port by the inclination of the polishing case 10 when the polishing case 10 is installed downwardly toward the discharge port so that the first bank 20 is connected to the first transfer part 21, So that the aggregate 2 and the mortar 3 pass through.

When the polishing case 10 is constructed horizontally, the first partition 20 may be curved like a screw so as to convey the aggregate 2 and the mortar 3 by its own shape.

The first transfer part 21 of the first bank 20 may be formed in various ways. For example, a part of the first bank 20 may be cut and bent in a curved shape toward one side to form the aggregate 2, And the mortar 3 to the next grinding portion or the discharge port, and may be in the form of a simple hole.

The second and third barrier ribs 30 and 40 are formed in the same structure as the first barrier rib 20 and the second barrier rib 30 is formed in the second polishing portion 12, And the third partition wall 40 is formed by sandwiching the aggregate 2 and the mortar 3 transferred to the third polishing section 13 while forming the third polishing section 13, (2) and the mortar (3) to the outside.

When the plurality of partitions 20, 30, and 40 are applied as described above, the first to third transfer units 21, 31 and 41 (the third transfer unit 41 is a discharge port) The three transfer parts 21, 31, 41 may be the same size or may be formed in different sizes (progressively smaller size toward the discharge port). In the latter case, it is possible to increase the polishing efficiency by raising the aggregate 2 in a stepwise manner (the aggregate can not be peeled and crushed due to the use of a large grinding ball for grinding the aggregate 2 in a single process) .

The first to third transfer units 21, 31 and 41 may be arranged in the same line as viewed in the axial direction, or may be staggered in the zigzag form.

Since the aggregate material 2 is polished (surface peeled, grain shape improved) by a physical collision between the abrasive ball 1 and the aggregate material 2, the efficiency of collision only by the rotation of the polishing case 10 will be low It is characterized in that the abrasive ball 1 and the aggregate 2 are dropped from the upper part to the lower part and the aggregate 2 is polished through a large impact generated in this process. For this purpose, the first to third abrasive parts 11, A bucket 50 for raising the abrasive ball 1 and the aggregate 2 to the top (ceiling) and dropping it to the bottom (bottom)

The bucket 50 is preferably bent in a shape having grooves, for example, a curved cross-section so as to raise the abrasive ball 1 and the aggregate 2 naturally by the rotation of the polishing case 10 , The inner circumferential surface of the polishing case 10, or the first to third partition walls 20, 30, 40.

The bucket 50 may be provided with a sorting hole (not shown) of a size that allows the mortar 3 to be removed in order to reduce the load caused by the mortar 3 when the grinding ball 1 and the aggregate 2 are lifted.

As shown in FIG. 3, a plurality of buckets 50 are formed at regular intervals along the circumferential direction. However, when the bucket 50 is formed symmetrically, the polishing balls and the aggregate falling from the upper bucket are symmetrically arranged in the lower portion, So that it is formed to avoid this.

The operation of the recycled aggregate grinding machine 100 capable of surface separation and shape improvement by impact according to the present invention is as follows.

In order to remove the aggregate from the surface of the aggregate prior to the commercialization stage and to improve the shape of the aggregate after the pretreatment process such as crushing and sorting, for example, aggregate is added to the first polishing portion 11 of the polishing case 1 of the present invention And the polishing balls 1 are put into the first to third polishing portions 11, 12, and 13, respectively. First, the polishing balls 1 charged into the first to third polishing units 11, 12, and 13 are separated from the first to third transfer units 11a, 12a, and 13b of the first to third partition walls 11, 13a. &Lt; / RTI &gt;

According to the present invention, the entirety of the first to third polishing portions 11, 12, 13 can be used, or only the last third polishing portion 13 or the second and third polishing portions 12, In other words, when the polishing ball 1 and the aggregate 2 are put in the third polishing section 13 or the second polishing section 12, the polishing is performed only through the polishing section selected as described above.

When the polishing ball 1 and the aggregate 2 are put into the polishing case 10 and the polishing case 10 is rotated, the polishing case 10 rotates in the reference clockwise direction in Fig. 3, The hour polishing ball 1 and the aggregate 2 collide with each other while being vibrated by the rotational force of the polishing case 10 at the bottom side of the polishing case 10. [ At this time, some of the mortar 3 is peeled off from the surface of the aggregate 2 due to the collision, and the shape of the mortar 3 is improved.

The bucket 50 is rotated while the polishing ball 1 on the bottom side of the polishing case 10 and the aggregate 2 are contained while the polishing case 10 rotates, The grinding ball 1 and the aggregate 2 fall down to the bottom while passing over the ceiling portion of the case 10.

The abrasive ball 1 and the aggregate 2 fall down and collide with each other, that is, the mortar 3 on the surface of the aggregate 2 is peeled off due to the strength and dropping energy of the abrasive ball 1, 2 is improved.

A plurality of buckets 50 of the polishing case 10 are installed and the falling of the bucket 50 is repeated so that the abrasive ball 1 in the first polishing portion 11 and the aggregate 2 are mixed with each other. All of the aggregate 2 and all the parts of the aggregate 2 can be polished so that the abrasive ball 1 and the aggregate 2 are transferred to the second polishing section 12 Because it will fall on the slides, the residence time will be longer, and the surface will be cleanly peeled off, improving the formability.

The aggregate 2 and the mortar 3 polished by the grinding ball 1 and the first grinding portion 11 are inclined by the inclination of the grinding case 10 or by the inclination of the first partition 20, The aggregate 2 and the mortar 3 are transferred to the second polishing unit 12 through the first transfer unit 21 while the polishing ball 1 is transferred to the first polishing unit 11 ).

The aggregate 2 and the mortar 3 transferred to the second polishing section 12 are secondarily polished by the polishing ball 1 inserted into the second polishing section 2, ). &Lt; / RTI &gt;

The aggregate 2 and the mortar 3 polished in the second polishing section 12 are transferred to the third polishing section 13 through the second transfer section 31 of the second partition 30 to form the third polishing section 13 and then discharged to the outside through the third transfer part 41 of the third bank 40. [

1: abrasive ball, 2: aggregate
3: mortar,
10: polishing case, 11, 12, 13: first to third polishing parts
11a, 12a, 13a: cover,
20, 30, 40: first to third partition walls,
21, 31, 41: first to third conveying parts,
50: bulkhead,

Claims (7)

A polishing case 10 in which the inside is hollow and the inlet and the outlet are respectively formed at both sides of the longitudinal direction;
Rotating means for rotating the polishing case;
At least one partition wall formed inside the polishing case to divide the polishing case into two or more polishing sections and transferring the mortar and the circulated aggregate polished in the polishing section;
A polishing ball which is charged into a polishing part of the polishing case and falls down from an upper part to a lower part by rotation of the polishing case to apply a physical impact to the aggregate put in the polishing part to peel the mortar on the surface of the aggregate, 1);
And at least one bucket 50 formed on the inner circumferential surface of the polishing machine case and forcibly rotating the polishing ball and the aggregate in the polishing portion of the polishing machine case to drop from the top to the bottom. Circular aggregate grinding machine with improved shape. The method of claim 1, wherein the partition wall, the aggregate is formed by one or more conveying portion to be transported toward the discharge port of the polishing case after being polished by the abrasive ball, the conveying portion is smaller than the abrasive ball but larger than the aggregate is formed The grinding aggregate grinding machine capable of improving the surface peeling and granularity due to the blow, characterized in that the abrasive ball does not pass through only the aggregate and the mortar. The method of claim 2, wherein two or more partitions are formed at a predetermined distance along the longitudinal direction in the polishing machine case, the two or more partitions are characterized in that the conveying portion is gradually formed as the closer to the discharge port. Circulating aggregate grinding machine that can improve surface peeling and shape by impact. The method of claim 2 or claim 3, wherein the conveying portion of the partition wall is bent in a curved shape toward one side after the portion of the partition wall is cut, the surface peeling by the blow, characterized in that passing through while passing the aggregate and mortar toward the discharge port Circular aggregate grinding machine that can improve the shape and shape. The recycled aggregate grinding machine according to claim 4, wherein the bucket includes a sorting hole in which the mortar removed from the aggregate surface is sorted. The circulating aggregate grinding machine according to any one of claims 1 to 3, wherein the polishing case is provided with a discharge hole for discharging mortar peeled from the aggregate.
The polishing apparatus according to claim 6, further comprising a collection box (14) disposed below the discharge hole (10a) of the polishing case for collecting the mortar discharged through the discharge hole and for blocking noise, And recycled aggregate grinding machine which can improve shape.

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