JP6595052B1 - Aggregate production equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of suitably separating water from an aggregate and thus removing foreign matters from the aggregate. An aggregate production apparatus includes a cleaning unit, a conveyor, and a separation unit. The cleaning unit cleans the aggregate with cleaning water. The conveyor conveys the washed aggregate. The separation unit is provided at a position where the aggregate transported by the conveyor and dropped from the tip of the conveyor collides, and separates the cleaning water adhering to the surface of the aggregate from the aggregate. [Selection] Figure 1

Description

  The technology disclosed in the present specification relates to an apparatus for producing aggregate. Specifically, the present invention relates to an apparatus that separates moisture adhering to the surface of the aggregate from the aggregate.

  Aggregates are widely used in the production of concrete and asphalt mixtures in the field of civil engineering and architecture. Aggregates are, for example, natural aggregates such as crushed mountain rocks, mined seabed gravel, mined sediment flowing into dam lakes, etc., and recycled concrete crushed concrete There are aggregates and the like.

  Such an aggregate is difficult to avoid mixing foreign matters (for example, mud, wood, etc.) inappropriate as an aggregate during the sampling process. When aggregates mixed with foreign substances are used for producing concrete or the like, the quality and strength of the concrete or the like may be reduced. For this reason, in recent years, techniques for removing foreign substances from collected aggregates have been developed.

  Patent Document 1 discloses an apparatus that cleans foreign matter adhering to aggregates by the water pressure of cleaning water. In this apparatus, in the process of transporting the aggregate immersed in water into the air, the foreign matter is separated from the aggregate in water by the pressure of the washing water ejected from the first nozzle, and the separated foreign matter is separated from the second nozzle. The water is discharged by the pressure of the washing water ejected from. Thereby, it is supposed that the foreign material adhering to the aggregate can be removed.

Japanese Patent Laid-Open No. 9-299825

  In the technique of Patent Document 1, the aggregate is conveyed in a state where moisture is attached to the surface of the aggregate. For this reason, when the foreign matter cannot be completely discharged by the cleaning water ejected from the second nozzle, the foreign matter may be mixed into the moisture adhering to the surface of the aggregate. As a result, the aggregate is exposed to moisture containing foreign matter, and dirt accumulates on the surface of the aggregate. In this specification, the technique which can isolate | separate a water | moisture content from an aggregate suitably and can remove a foreign material from an aggregate by extension is provided.

  The aggregate production apparatus disclosed in the present specification includes a cleaning unit, a conveyor, and a separation unit. The cleaning unit cleans the aggregate with cleaning water. The conveyor conveys the washed aggregate. The separation unit is provided at a position where the aggregate transported by the conveyor and dropped from the tip of the conveyor collides, and separates the cleaning water adhering to the surface of the aggregate from the aggregate.

  In the above-described aggregate production apparatus, the separation unit is provided at a position where the aggregate transported by the conveyor and dropped from the front end of the conveyor collides. For this reason, the washing water adhering to the aggregate surface is separated from the aggregate surface by an impact force that collides with the separation portion when the aggregate is dropped. Thus, in the above-described aggregate production apparatus, the washing water can be suitably separated from the aggregate surface. That is, even if the cleaning water adhering to the surface of the aggregate contains foreign matter, the foreign matter can be removed from the aggregate surface.

The figure which shows the structure of the aggregate production apparatus 10 which concerns on an Example. The side view which shows the structure of the isolation | separation part 16 which concerns on an Example. The perspective view which shows the structure of the isolation | separation part 16 which concerns on an Example. The top view which shows the structure of the isolation | separation part 16 which concerns on an Example.

  In one embodiment disclosed in the present specification, the separation unit includes an aggregate receiving unit with which the aggregate dropped from the conveyor collides, and a washing water receiving unit provided below the aggregate receiving unit. Also good. When the aggregate receiving part and the cleaning water receiving part are viewed in plan, the cleaning water receiving part may be located inside the aggregate receiving part. According to such a configuration, the aggregate falling from the aggregate receiving part can reach the ground without contacting the cleaning water receiving part (that is, without being collected by the cleaning water receiving part).

  In one embodiment disclosed in the present specification, the aggregate receiving portion includes an outer surface formed so that a cross-sectional area decreases as it goes from the upper end to the lower end, and an inner surface that opens the upper end of the outer surface and closes the lower end. You may have. Further, the inner bottom surface of the aggregate receiving portion may be formed in a flat shape or so as to be positioned upward as it goes from the outer surface to the center of the inner bottom surface. Further, when the aggregate receiving part and the cleaning water receiving part are viewed in plan, the lower end of the outer surface of the aggregate receiving part may be located inside the upper end of the cleaning water receiving part. In such a configuration, since the upper end of the aggregate receiving part (outer surface) is open, the washing water separated from the aggregate surface overflows from the aggregate receiving part and travels along the outer surface of the aggregate receiving part. To flow downward. And since the lower end of the outer surface of the aggregate receiving part is located inside the upper end of the washing water receiving part, the washed water that has flowed down reaches the lower end of the aggregate receiving part and falls to the washing water receiving part. And recovered. As described above, in the above configuration, the washing water separated from the aggregate surface can be efficiently recovered.

  In one embodiment disclosed in the present specification, the cleaning water receiving portion may have an opening on a bottom surface thereof. The aggregate production apparatus may further include a tubular member connected to the opening. The washing water separated from the aggregate may be discharged through the tubular member. In such a configuration, the tip (that is, the other end of the tubular member) opposite to the side connected to the opening of the cleaning water receiving portion is positioned below the cleaning water receiving portion (that is, the aggregate is the aggregate. It is possible to prevent the separated washing water from entering the aggregate pile by disposing it at a position different from the position where the aggregate pile is formed by dropping from the receiving portion.

  In one embodiment disclosed herein, the inner surface of the wash water receiver may have a funnel shape. An opening may be formed at the funnel-shaped tip. According to such a configuration, the cleaning water collected in the cleaning water receiving portion can be efficiently discharged.

  According to one embodiment disclosed in the present specification, the aggregate receiving portion may be provided with a plurality of notches at intervals in the circumferential direction of the outer surface at the upper end portion of the outer surface. The plurality of notches may extend from the upper end to the lower end of the outer surface. According to such a configuration, since the washing water separated from the aggregate and retained in the aggregate receiving part is discharged through the notch at a relatively early stage, the bone recovered in the aggregate receiving part The time during which the material is exposed to the cleaning water can be shortened.

  Hereinafter, an aggregate production apparatus 10 according to an embodiment will be described with reference to the drawings. The aggregate production device 10 is used in an aggregate production plant. The aggregate production apparatus 10 is an apparatus that cleans aggregates that have been crushed to a predetermined size and separates the cleaned aggregates from the cleaning water that has adhered to the aggregates. As shown in FIG. 1, the aggregate production apparatus 10 includes a cleaning unit 12, a conveyor 14, a separation unit 16, a tubular member 18, and a cleaning water storage unit 20. In addition, although not shown, in the aggregate production plant, an inlet for supplying aggregate raw materials (for example, mined rocks from the mountain or collected concrete waste) to the upstream side of the cleaning unit 12. In addition, a crusher or the like for crushing the charged raw material into a predetermined size is appropriately provided.

  The cleaning unit 12 cleans the aggregate put into the cleaning unit 12. The cleaning unit 12 is supplied with the aggregate A crushed by a crusher or the like and the cleaning water W for cleaning the aggregate A. The cleaning unit 12 cleans the aggregate by stirring the aggregate in the cleaning water (for example, vibration type, rotary type, etc.). The cleaning unit 12 also has a function of sorting the input aggregates by size (for example, 5 mm to 15 mm, 15 mm to 25 mm, 25 mm to 40 mm, etc.). For example, the aggregate cleaned by the cleaning unit 12 is sorted for each size by various size screens (sieves) and is carried into each of the plurality of conveyors 14 (only one conveyor 14 is shown in FIG. 1). Note that the crushed aggregate may include aggregates having a size larger than the above sizes. Such aggregate may be repeatedly put into the crusher until it reaches a size corresponding to one of the above-mentioned sizes. In this embodiment, the cleaning unit 12 has an aggregate sorting function. However, the sorting function may be provided by a separate device from the cleaning unit 12. You may arrange | position in a different position.

  The plurality of conveyors 14 convey the aggregate cleaned by the cleaning unit 12. As described above, in FIG. 1, only one conveyor 14 is illustrated, but aggregates selected for each size are carried into the plurality of conveyors 14, respectively. The conveyor 14 is a belt conveyor that drives the conveyor belt 15 by a motor (not shown). The conveyor 14 is inclined so that an end 14b on the separation unit 16 (described later) side is positioned above the end 14a on the cleaning unit 12 side. The conveyor 14 is loaded with aggregates that have been cleaned by the cleaning unit 12 and sorted to a predetermined size, and conveys the aggregates from the end 14a toward the end 14b. That is, the aggregate placed on the conveyor 14 is conveyed obliquely upward. For this reason, in the process in which the washed aggregate is conveyed by the conveyor 14, the washing water adhering to the aggregate flows downward (in the direction opposite to the conveying direction of the conveyor 14), and a certain amount of washing water is aggregated. Separated from. When the aggregate conveyed by the conveyor 14 reaches the end 14b, it falls downward from the tip of the end 14b. The conveyor 14 may be a roller conveyor, for example.

  The separation unit 16 separates the cleaning water adhering to the surface of the cleaned aggregate from the aggregate. The separation part 16 is attached to the tip (end part 14 b) of the conveyor 14 via a connection member 26. In other words, the separation part 16 is suspended by the connecting member 26 vertically below the end part 14 b of the conveyor 14. In other words, the separation unit 16 is provided at a position where the aggregate transported by the conveyor 14 and falling from the end 14b of the conveyor 14 collides.

  As shown in FIG. 2, the separation unit 16 includes an aggregate receiving unit 22 and a cleaning water receiving unit 24. Aggregate dropped from the end portion 14 b of the conveyor 14 collides with the aggregate receiving portion 22. Aggregate that has collided with the aggregate receiving part 22 is deposited on the aggregate receiving part 22, or bone by an impact force that has collided with the aggregate receiving part 22 (or aggregate accumulated on the aggregate receiving part 22). It is blown off to the outside of the material receiving portion 22. As shown in FIGS. 2 and 3, the aggregate receiving portion 22 opens the upper surface of the outer surface 22 a and the outer surface 22 a so that the cross-sectional area decreases from the upper end toward the lower end, while closing the lower end. And an inner surface 22b. Specifically, in this embodiment, the aggregate receiving part 22 has a dish-like form. Here, the cross-sectional area of the outer surface 22a is the cross-sectional area of the object that is an inverted frustoconical shape with the outer surface 22a as an outline cut along a horizontal plane (that is, the portion surrounded by the outer surface 22a). Area). The inclination angle of the outer surface 22a (that is, the angle formed by the vertical line and the outer surface 22a in a longitudinal section obtained by cutting an inverted truncated cone-shaped object along the central axis) is determined by the cleaning water traveling along the outer surface 22a. It is set to flow down. In other words, the angle is set such that the cleaning water in the aggregate receiving portion 22 does not fall directly from the upper end of the outer surface 22a onto the ground. This prevents the washing water separated by the aggregate receiving part 22 from falling onto the aggregate pile 30. The inclination angle of the outer surface 22a can be appropriately set according to the surface roughness of the outer surface 22a and the surface tension of the cleaning water.

  The inner bottom surface 22c of the aggregate receiving portion 22 is formed so as to be positioned upward from the outer side surface 22a toward the center of the inner bottom surface 22c. In the present embodiment, the inner bottom surface 22c is formed in a conical shape having a top at the center (that is, convex upward). As shown in FIG. 2, the inner bottom surface 22 c of the aggregate receiving portion 22 is connected to an intermediate position in the vertical direction of the outer surface 22 a, and the top portion is higher than the upper end of the outer surface 22 a of the aggregate receiving portion 22. Projects upward. The inner bottom surface 22c may be planar. In this case, the entire inner bottom surface 22c may be positioned below the upper end of the outer surface 22a. The aggregate receiving portion 22 is provided with a plurality of cutouts 22d at intervals in the circumferential direction of the outer surface 22a at the upper end portion of the outer surface 22a. Each notch 22d extends from the upper end to the lower end of the outer surface 22a. In this embodiment, eight notches 22d are formed at equal intervals along the circumferential direction of the outer surface 22a, and each notch 22d is formed between the outer surface 22a and the inner bottom surface 22c from the upper end of the outer surface 22a. Extends to the connection position.

  The washing water receiving part 24 is provided below the aggregate receiving part 22 and collects the washing water separated from the aggregate. The inner surface of the washing water receiving portion 24 has a funnel shape, and an opening 24a is formed at the tip (that is, the lower end). As shown in FIG. 4, when the aggregate receiving part 22 and the cleaning water receiving part 24 are viewed in plan, the cleaning water receiving part 24 is located inside the aggregate receiving part 22. Specifically, when the aggregate receiving part 22 and the cleaning water receiving part 24 are viewed in plan, the inner side of the portion located on the outermost periphery of the aggregate receiving part 22 (the upper end 23a of the aggregate receiving part 22 in this embodiment) The entire washing water receiving portion 24 is located in the upper part. When the aggregate receiving part 22 and the cleaning water receiving part 24 are viewed in plan, the lower end 23 b of the outer surface 22 a of the aggregate receiving part 22 is located inside the upper end 25 of the cleaning water receiving part 24.

  The tubular member 18 is connected to the opening 24 a of the cleaning water receiving portion 24 by, for example, a socket 19. The tubular member 18 is constituted by, for example, a resin hose or a metal pipe. The washing water separated from the aggregate and collected in the washing water receiving portion 24 flows into the tubular member 18, and the washing water is discharged to the outside through the tubular member 18.

  The washing water reservoir 20 is provided at the end of the tubular member 18 opposite to the side connected to the opening 24a. The cleaning water storage unit 20 stores the cleaning water discharged from the tubular member 18.

  In the aggregate production apparatus 10 of the present embodiment, an aggregate receiving portion 22 is provided at a position where the aggregate dropped from the end portion 14b of the conveyor 14 collides. For this reason, the cleaning water (cleaning water remaining on the aggregate surface) that could not be separated from the aggregate by the conveyance by the conveyor 14 is separated from the aggregate surface by the impact force that collides with the aggregate receiving portion 22 when the aggregate falls. To be separated. Thus, in the aggregate production apparatus 10 described above, it is possible to suitably separate the wash water that was difficult to separate only by being conveyed by the conveyor 14. That is, even if the cleaning water adhering to the surface of the aggregate contains foreign matter, the foreign matter can be removed from the aggregate surface.

  Further, in this embodiment, the outer surface 22a of the aggregate receiving part 22 has a dish-like form in which the cross-sectional area decreases as it goes from the upper end to the lower end, and the upper end portion of the outer surface 22a includes a plurality of pieces. A notch 22d is provided. Therefore, the washing water separated from the aggregate due to the collision of the aggregate with the aggregate receiving portion 22 is discharged from the notch 22d and flows down along the outer surface 22a of the aggregate receiving portion 22. Since the cleaning water staying in the aggregate receiving part is discharged relatively quickly due to the presence of the notch 22d, it is possible to shorten the time during which the aggregate collected in the aggregate receiving part 22 is exposed to the cleaning water. it can.

  Further, a washing water receiving portion 24 is provided below the aggregate receiving portion 22, and the lower end 23 b of the outer surface 22 a of the aggregate receiving portion 22 is located inside the upper end 25 of the washing water receiving portion 24 in a plan view. Is located. For this reason, the cleaning water that has reached the lower end 23 b of the outer surface 22 a falls from the aggregate receiving portion 22 and is collected in the cleaning water receiving portion 24. Thus, according to the aggregate production apparatus 10 of a present Example, the wash water isolate | separated from the aggregate surface can be collect | recovered efficiently.

  On the other hand, in this embodiment, when the aggregate receiving part 22 and the cleaning water receiving part 24 are viewed in plan, the entire cleaning water receiving part 24 is located inside the portion located on the outermost periphery of the aggregate receiving part 22. . Therefore, since the aggregate dropped from the aggregate receiving portion 22 reaches the ground without contacting the cleaning water receiving portion 24 (that is, without being collected by the cleaning water receiving portion 24), as shown in FIG. Aggregate piles 30 can be formed. Further, since the inner bottom surface 22c of the aggregate receiving portion 22 has a conical shape that protrudes upward, the aggregate that has collided with the inner bottom surface 22c is likely to be blown off to the outside of the aggregate receiving portion 22, Excessive accumulation of aggregate on the material receiving portion 22 can be suppressed.

  In the present embodiment, the cleaning water collected in the cleaning water receiving portion 24 is discharged from the opening 24 a to the cleaning water storage portion 20 through the tubular member 18. In this manner, the discharge destination of the cleaning water is arranged at a position different from the position below the cleaning water receiving portion 24 (that is, the position where the aggregate falls from the aggregate receiving portion and the aggregate crest 30 is formed). By doing so, it is possible to prevent the separated cleaning water from being mixed into the aggregate pile 30.

  In addition, the separation part 16 of a present Example may be provided only under the edge part 14b of the conveyor 14 in which the aggregate with a comparatively small diameter is conveyed. Aggregates with a small diameter are difficult to separate the washing water during conveyance by the conveyor 14, and the separation water 16 is provided to the conveyor 14 to which such aggregates are conveyed so that the washing water can be effectively used. Can be separated. However, the separation unit 16 is not limited thereto, and may be provided on all of the lower portions of the end portions 14b of the plurality of conveyors 14, respectively.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

10: aggregate production device, 12: washing section, 14: conveyor, 14a: end, 14b: end, 15: conveyor belt, 16: separation section, 18: tubular member, 20: washing water storage section, 22: Aggregate receiving portion, 22a: outer surface, 22b: inner surface, 22c: inner bottom surface, 22d: notch, 23a: upper end, 23b: lower end, 24: washing water receiving portion, 24a: opening, 26: connecting member, 30 :Mountain

Claims (5)

An aggregate production device for producing aggregates,
A washing section for washing the aggregate with washing water;
A conveyor for transporting the washed aggregate;
A separation unit that is provided at a position where the aggregate that has been transported by the conveyor and dropped from the tip of the conveyor collides, and separates the cleaning water adhering to the surface of the aggregate from the aggregate;
Equipped with a,
The separation unit is
An aggregate receiving portion with which the aggregate dropped from the conveyor collides,
A washing water receiving portion provided below the aggregate receiving portion;
Have
An aggregate production apparatus in which the washing water receiving part is located inside the aggregate receiving part when the aggregate receiving part and the washing water receiving part are viewed in plan . The aggregate receiving portion has an outer surface formed so that a cross-sectional area decreases from the upper end toward the lower end, and an inner surface that opens the upper end of the outer surface and closes the lower end,
The inner bottom surface of the aggregate receiving part is formed in a flat shape or so as to be positioned upward from the outer surface toward the center of the inner bottom surface,
In plan view the washing water receiving portion and the aggregate receiver, the lower end of the outer surface of the inner side of the upper end of the washing water receiving portion and the aggregate receiving portion is located, the bone according to claim 1 Material production equipment. The washing water receiving portion has an opening on its bottom surface,
The aggregate production apparatus further includes a tubular member connected to the opening,
The aggregate production apparatus according to claim 1 or 2 , wherein the washing water separated from the aggregate is discharged through the tubular member. The inner surface of the washing water receiving part has a funnel shape,
The aggregate production apparatus according to claim 3 , wherein the opening is formed at a tip of the funnel shape. The aggregate receiving portion is provided with a plurality of notches at intervals in the circumferential direction of the outer surface at the upper end portion of the outer surface,
The aggregate production device according to any one of claims 2 to 4 , wherein the plurality of notches extend from an upper end to a lower end of the outer surface.

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