JP5063308B2 - Aggregate surface drying apparatus and aggregate surface drying method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface-drying treatment apparatus for an aggregate capable of drying the surface of the aggregate by a method which conforms to JIS Standards by using a simple configuration, and to provide a surface-drying treatment method of the aggregate. <P>SOLUTION: The surface-drying treatment apparatus 10 for the aggregate includes a treatment bench 12 having a substantially planar surface on its upper surface; a water-absorbing moving sheet 14 formed of a strip of a material having water absorption properties, and spread without being fixed on an upper surface of the treatment bench 12, and placing the aggregate; and a water-absorbing body 16 that has a substantially planar surface on the lower surface, allows at least its lower surface layer to be formed of a flexible and water-absorbing material, and allows its lower surface to face the water-absorbing moving sheet 14 and is provided at a prescribed interval from the water-absorbing moving sheet 14 at an upper portion of the treatment bench 12. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to an apparatus for producing a dry state of an aggregate and a method for making an aggregate into a dry state using the same, and more particularly to a method for producing a dry state by a method conforming to JIS standards.

  Usually, the blending method is used as a blending condition of water, cement, coarse aggregate, and fine aggregate for producing concrete.

  Indication blending refers to the blending shown in specifications and design documents for obtaining concrete of a predetermined quality. In the formula blending, all coarse aggregates should be 5 mm or more and all fine aggregates should be 5 mm or less, and these aggregates should be in the dry state. It is strictly defined. The surface dry state refers to a state where there is no surface water adhering to the surface of the aggregate and the voids inside the aggregate are filled with moisture.

  However, aggregates used in the field contain aggregates with a particle size different from the above-mentioned particle sizes, and the water content varies depending on whether it is dry or wet. There is a need. This is called on-site formulation.

  In particular, with respect to the amount of water in the on-site formulation, it is necessary to measure the water absorption rate of the aggregate in order to correct the amount of water in the indicated formulation. According to the Japanese Industrial Standard water absorption test method (JIS A 1110), it is specified that an aggregate sample is sufficiently water-absorbed and then brought to a surface dry state.

  Of these, if the work of bringing the aggregate to the surface dry state is performed manually, such as by rolling it on a water-absorbing cloth and wiping off the visible water film, it takes time and is not efficient. Therefore, a device for bringing the aggregate into a surface dry state has been proposed conventionally.

Thus, for example, Patent Document 1 discloses an apparatus that separates surface water adhering to the aggregate surface by using a centrifugal separator or removing the aggregate surface by applying wind from a blower. ing.
JP 2001-289766 A

  However, unlike the method of wiping the surface water of the aggregate with a water-absorbing cloth, the method of bringing the aggregate to the surface dry state by the apparatus disclosed in Patent Document 1 is different from the method of water absorption test (JIS A) of Japanese Industrial Standards. 1110), it is not strict.

  The present invention has been made in view of the above points, and has a simple configuration and an aggregate surface drying apparatus capable of bringing an aggregate into a surface dry state by a method based on JIS standards and It is an object to provide a method for surface drying treatment of aggregates using the same.

In order to achieve the above object, the present invention is an aggregate surface drying apparatus for removing surface water adhering to the surface of an aggregate to bring it into a surface drying state, a processing table having a substantially planar upper surface, A water-absorbing transfer sheet that is movable along the upper surface of the treatment table and a substantially planar lower surface, and at least the lower surface layer thereof is made of a material having flexibility and water absorption. And a water-absorbing body provided above the treatment table so that the lower surface faces the water-absorbing transfer sheet at a predetermined interval, and the water- absorbing body is a plate-like base made of a sponge or a cushion material. It consists of a material, a fixed plate made of wooden plywood attached to the upper surface of the plate-like base material, and a water-absorbent cloth covering the lower surface of the plate-like base material (first invention).

According to the aggregate surface drying apparatus according to the present invention, the aggregate is introduced between the water absorbent moving sheet and the water absorbent body by placing the aggregate on the water absorbent moving sheet and moving the water absorbent moving sheet. And while passing through the space, the water-absorbing transfer sheet and the water-absorbing body come into contact with each other while rolling, and the surface water adhering to the surface is absorbed. Therefore, a large amount of aggregate can be brought into a dry state easily and in accordance with the JIS standard at a time, thereby improving work efficiency.
The water absorbent body is composed of a plate-like substrate made of sponge or cushion material, a fixed plate made of wooden plywood attached to the upper surface of the plate-like substrate, and a water absorbent cloth covering the lower surface of the plate-like substrate. Therefore, when the aggregate is introduced between the water-absorbing transfer sheet and the water-absorbing body, the surface water on the surface of the aggregate is absorbed by the water-absorbent cloth, and the plate-like substrate made of sponge or cushion material The elastic deformation following the shape of the aggregate can prevent the aggregate from being crushed.

According to a second invention, in the first invention, the edge of the lower surface of the water absorbent body on the side where the aggregate is introduced is closer to the back of the distance between the water absorbent body and the water absorbent moving sheet. A tapered or curved introduction surface is formed so as to be narrowed.
According to the aggregate surface drying apparatus according to the present invention, the aggregate can be smoothly and reliably introduced between the water absorbent body and the water absorbent transfer sheet, and the working efficiency can be improved.

A third invention is characterized in that in the first or second invention, there is provided an interval changing means for changing an interval between the water absorbent body and the water absorbent moving sheet.
According to the aggregate surface drying apparatus according to the present invention, aggregates of various types of particle sizes can be brought into a surface dry state.

According to a fourth aspect of the present invention, in any one of the first to third aspects, both ends of the water absorbent moving sheet are wound around a pair of reels disposed on both sides of the water absorbent, and one of the reels is rotated. The water absorption moving sheet is movable.
According to the aggregate surface drying apparatus according to the present invention, the water absorbent transfer sheet can be moved in a simple and space-saving manner.

5th invention is the surface drying process method which removes the surface water adhering to the surface of an aggregate, and makes it surface dry, Comprising: Using the aggregate surface drying process apparatus of Claim 1 , the said water absorption transfer sheet | seat Further, the aggregate in a wet state is placed, and the water-absorbing / moving sheet is moved so that the aggregate passes between the water-absorbing body and the water-absorbing / moving sheet.

  ADVANTAGE OF THE INVENTION According to this invention, it is a simple structure and the method according to JIS standard can make an aggregate surface dry state, and the aggregate surface dry processing apparatus which uses it, and the surface dry process of an aggregate using the same Can provide a method.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
The aggregate surface drying treatment apparatus 10 according to the present embodiment is an apparatus for bringing an aggregate used as a concrete material into a surface drying state.

FIG. 1 is a schematic diagram of an aggregate surface drying apparatus 10 according to the present embodiment.
As shown in FIG. 1, the surface drying treatment apparatus 10 includes a treatment table 12, a water absorbent transfer sheet 14, and a water absorbent body 16.

  The processing table 12 includes a substantially planar upper surface, and the upper surface is processed, for example, a region A for placing an aggregate for surface drying treatment, and a region B for surface drying the aggregate. It has a sufficient length and width so as to ensure a region C where the aggregate is discharged.

  The water-absorbing transfer sheet 14 is made of a band-shaped material having water absorption, and is laid without being fixed to the upper surface of the processing table 12, and both ends thereof are, for example, the left and right sides of the processing table 12 shown in FIG. It is wound in a roll shape by reels 18 installed in the respective sections. When the water absorption transfer sheet 14 is wound up by one reel 18, the water absorption transfer sheet 14 wound around the other reel 18 is unwound and the water absorption transfer sheet 14 moves on the processing table 12. . Moreover, the water absorption movement sheet | seat 14 has sufficient width | variety so that a predetermined amount of aggregates can be mounted. As the water absorbent transfer sheet 14, for example, a water absorbent cloth such as gauze or towel can be used.

  The water absorbing body 16 has a substantially flat surface on the lower surface 17, and at least the surface layer thereof is made of a material having flexibility and water absorption.

The water absorbent body 16 is provided above the treatment table 12 so that the lower surface 17 of the water absorbent body 16 faces the water absorbent moving sheet 14 with a predetermined interval.
This space | interval is set to the magnitude | size (for example, about 3-4 mm) smaller than the particle size (for example, (phi) 5-40 mm) of an aggregate, and when transporting on the water absorption movement sheet | seat 14, it is with the water absorption body 16 and. The aggregate can pass between the water-absorbing transfer sheet 14 while the lower surface 17 of the water-absorbing body 16 is deformed and rotating.

  FIG. 2 is an enlarged cross-sectional view of the water absorbing body 16.

  As shown in FIG. 2, the water absorbent body 16 is a plate-like plate-like substrate in which a substantially curved or tapered introduction surface 21 is formed at the corners at the lower ends on both sides in the direction in which the aggregate is introduced or discharged. 20, a fixing plate 22 attached to the upper surface of the plate-like substrate 20, and a water absorbent cloth 24 that covers both side surfaces and the lower surface of the plate-like substrate 20 in the drawing.

  A through hole 23 is formed in each corner portion of the fixing plate 22, and a fixing hole 13 is formed in the upper surface of the processing table 12 corresponding to each through hole 23. 12 can be fixed so that a predetermined distance X is secured between the lower surface 17 of the water absorbent body 16 and the water absorbent transfer sheet 14.

  Further, the fixing position of the fixing plate 22 and the fixing tool 26 can be changed up and down, and the interval X can be adjusted. For example, as shown in the figure, as the fixture 26, a bolt 27 that can be inserted into the through hole 23, and a nut that is screwed with the bolt 27 and that fixes the fixing plate 22 through which the bolt 27 is inserted so as to be sandwiched from both sides. 28, the fixing position is changed up and down by rotating the nut 28, and the interval X is adjusted.

  In the present embodiment, for example, a sponge or cushion material is used as the plate-like substrate 20, a wooden plywood is used as the fixed plate 22, and an entrance mat is used as the water absorbent cloth 24.

Next, the usage method of the surface drying processing apparatus 10 is demonstrated.
FIG. 3 is an explanatory diagram for explaining a method of using the surface drying treatment apparatus 10.

  First, as shown in FIG. 3A, a wet aggregate 30 is placed on the water absorbent transfer sheet 14 on one side (left side in the figure) of the water absorbent body 16. At this time, according to the water absorption rate test method (JIS A 1110), about 2 kg of aggregate 30 is to be placed at one time, and is spread thinly and uniformly so as not to be locally biased on the water absorbent transfer sheet 14.

  And the water absorption moving sheet 14 is wound up by the reel 18 on the side opposite to the side on which the aggregate 30 is placed (right side in the figure), and the water absorption moving sheet 14 is moved to be placed on the water absorbing moving sheet 14. The aggregate 30 is introduced between the lower surface 17 of the water absorbent body 16 and the water absorbent transfer sheet 14. Here, since the introduction surface 21 is formed in the corner part of the lower end of the water absorption body 16, the aggregate 30 is introduce | transduced smoothly and reliably.

  Further, by continuing the winding of the reel 18, the aggregate 30 introduced between the water absorbent transfer sheet 14 and the lower surface 17 of the water absorbent body 16 is in contact with the water absorbent transfer sheet 14 and the lower surface 17 while rolling. It moves with the water absorption moving sheet 14 (see FIG. 3B). As a result, the surface of the aggregate 30 is uniformly and repeatedly contacts the lower surface 17 of the water-absorbing / moving sheet 14 or the water-absorbing body 16, and the surface water adhering to the aggregate surface is absorbed by the water-absorbing / moving sheet 14 or the water-absorbing body 16. Is absorbed by the lower surface 17.

  Thus, the aggregate 30 which moved between the water absorption moving sheet 14 and the water absorption body 16 is discharged from the right end of the water absorption body 16 in a surface dry state (see FIG. 3C).

  In addition, even when the process of passing the aggregate 30 between the water absorbent transfer sheet 14 and the water absorbent body 16 is performed once in this way, when the surface of the aggregate 30 is still visible as wet, By repeating this process, the aggregate 30 is brought into a surface dry state.

  As mentioned above, according to the surface drying processing apparatus 10 which concerns on this embodiment, it consists of the process stand 12, the water absorption moving sheet 14, and the water absorption body 16, and the aggregate 30 is mounted on the water absorption moving sheet 14, and water absorption is carried out. By moving the moving sheet 14, the aggregate 30 is introduced between the water-absorbing / moving sheet 14 and the water-absorbing body 16, and contacts the water-absorbing / moving sheet 14 and the water-absorbing body 16 while rolling. The surface water adhering to the surface is absorbed. Therefore, a large amount of aggregate 30 can be brought into a dry state easily and in accordance with the JIS standard at one time, thereby improving work efficiency.

  Moreover, according to the surface drying processing apparatus 10 which concerns on this embodiment, the space | interval of the water absorption body 16 and the water absorption transfer sheet | seat 14 can be changed, and the aggregate 30 of various kinds of particle sizes can be surface-dried. Can be.

  Moreover, according to the surface drying processing apparatus 10 which concerns on this embodiment, the both ends of the water absorption movement sheet | seat 14 are wound by the roll 18 with the reel 18 each installed in the side which opposes from the process stand 12, The water absorption moving sheet 14 can be moved in a simple and space-saving manner.

  In the surface drying processing apparatus 10 according to the present embodiment, the upper surface of the processing table 12 is substantially flat. However, the present invention is not limited to this, and the aggregate 30 to be transported may have a gentle inclination that does not roll off. Good.

1 is a schematic view of an aggregate surface drying apparatus 10 according to the present embodiment. 3 is an enlarged cross-sectional view of a water absorbent body 16. It is explanatory drawing for demonstrating the usage method of the surface drying processing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Surface dry processing apparatus 12 Processing stand 14 Water absorption moving sheet 16 Water absorption body 17 Lower surface 18 Reel 20 Plate-shaped base material 21 Introduction surface 22 Fixing plate 24 Water absorbent cloth 26 Fixing tool 27 Bolt 28 Nut 30 Aggregate A For surface drying processing Area where the aggregate is placed B Area where the aggregate is surface-dried C Area where the processed aggregate is discharged X Interval

Claims (5)

An aggregate surface drying apparatus that removes surface water adhering to the surface of the aggregate and puts it into a surface dry state,
A processing table having a substantially planar upper surface;
A water-absorbing transfer sheet that is made of a strip-shaped material having water absorption, and is movable along the upper surface of the treatment table;
It has a substantially planar lower surface, and at least its lower surface layer is made of a material having flexibility and water absorption, and is disposed above the processing table so that the lower surface faces the water absorbent transfer sheet with a predetermined interval. It consists of a water absorbent provided,
The water absorbent body is composed of a plate-like substrate made of sponge or cushion material, a fixed plate made of wooden plywood attached to the upper surface of the plate-like substrate, and a water-absorbent cloth covering the lower surface of the plate-like substrate. An aggregate surface drying apparatus characterized by that.   A tapered or curved introduction surface at the edge of the lower surface of the water absorbing body on the side where the aggregate is introduced, so that the distance becomes narrower toward the back of the distance between the water absorbing body and the water absorbing moving sheet. The aggregate surface drying apparatus according to claim 1, wherein:   The aggregate surface dry treatment apparatus according to claim 1, further comprising an interval changing unit that changes an interval between the water absorbing body and the water absorbing moving sheet.   The both ends of the water-absorbing moving sheet are wound around a pair of reels arranged on both sides of the water-absorbing body, and the water-absorbing moving sheet can be moved by rotating one of the reels. The aggregate surface-drying processing apparatus in any one of 1-3. It is a surface drying treatment method that removes surface water adhering to the surface of the aggregate and makes it surface dry,
Using the aggregate surface drying apparatus according to claim 1 ,
Place the aggregate in a wet state on the water absorption transfer sheet,
An aggregate surface-drying treatment method, wherein the water-absorbing transfer sheet is moved to pass the aggregate between the water-absorbing body and the water-absorbing transfer sheet.

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