JP3671076B2 - Asphalt plant - Google Patents

Description

外部区画室８を区画室６ｂから区画室６ｄについて組み合わせることで、特定の区画室の容量を増加させることができ、

の３通りの区画室の容量比率を得ることができ、標準的なアスファルト混合物を製造する場合は勿論のこと、排水性アスファルト混合物のように二種類の骨材のみを使用するような特殊アスファルト混合物を製造する場合にでもその配合に適した区画室の容量比率を設定することができる。
【００１７】
また、図４に示すように外部区画室を２つ配設した場合にあっては、例えば各区画室の容量比率を下記のように設定し、

外部区画室１３を区画室６ａと区画室６ｂとに組み合わせ、外部区画室１４を区画室６ｃと区画室６ｄとに組み合わせることで特定の区画室の容量を増加させることができ、

の４通りの区画室の容量比率を得ることができる。
【００１８】
なお、本実施例で示した外部区画室の配置例は、外部区画室の配置や数を制約するものではなく、この他にも外部区画室の配置例は種々考えられ、本願発明の要旨を逸脱しない範囲でその配置や数に変更を加え得ることは勿論である。
【００１９】
【発明の効果】
以上のように本発明に係るアスファルトプラントにあっては、骨材貯蔵ビンの区画室の外壁に沿って外部区画室を配設し、各区画室の壁面に各区画室より外部区画室に骨材の流入を許容する骨材流入口を穿設し、該骨材流入口に配設した開閉蓋を開放することによって特定の区画室と外部区画室とに同一種類の骨材を貯蔵することができるので、特殊混合物製造時に必要とする特定の骨材の貯蔵量を増やすことができて効率良く特殊混合物を製造することが可能となる。
【図面の簡単な説明】
【図１】本発明のアスファルトプラントの一実施例の一部切り欠き概略正面図である。
【図２】図１の一部切り欠き概略側面図である。
【図３】図２の要部を拡大した縦断断面図である。
【図４】別の実施例を示す図１に相当する概略正面図である。
【符号の説明】
２…振動篩 ６…骨材貯蔵ビン
６ａ、６ｂ、６ｃ、６ｄ、６ｅ…区画室 ７…外部区画室
１０ａ、１０ｂ、１０ｃ、１０ｄ…骨材流入口
１１ａ、１１ｂ、１１ｃ、１１ｄ…開閉蓋
１３、１４…外部区画室[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an asphalt plant that produces an asphalt mixture that is a road pavement material, and more particularly to an asphalt plant that also produces a special asphalt mixture such as a drainage asphalt mixture.
[0002]
[Prior art]
Asphalt mixtures produced in asphalt plants are increasingly produced in a special way depending on the intended use. For example, to prevent water such as rainwater from accumulating on the surface of paved roads on expressways. In addition, a drainable asphalt mixture is also produced which allows water to penetrate the paved road and simultaneously drain the soaked water from the lower roadbed.
[0003]
As aggregates used in the drainage asphalt mixture, two types of aggregates, aggregates having a particle diameter of 5 to 13 mm (80 to 85% by weight) and sand (15 to 20% by weight), are exclusively used. Then, when producing the drainage asphalt mixture, the No. 6 crushed stone (aggregate equivalent to 5 to 13 mm particle size) and sand stored in the storage hopper are simultaneously discharged in a predetermined amount and supplied to the dryer, and the bone heated by the dryer The material is supplied to the vibration sieve of the plant body, and is sorted according to particle size and stored in an aggregate storage bin.
[0004]
[Problems to be solved by the invention]
However, the aggregate storage bin is divided into bins and usually stores 2.5 mm or less of sand, 2.5 to 5 mm, 5 to 13 mm, 13 to 20 mm, 20 mm or more of aggregate according to particle size. It is divided into five chambers, and when producing a drainable asphalt mixture as described above, there are only two types of aggregates to be used: No. 6 crushed stone and sand. The asphalt mixture will be manufactured and shipped using a compartment and a 5-13 mm compartment. In that case, since the storage capacity of the 5-13 mm compartment is smaller than that of the 2.5 mm or less compartment, the 5-13 mm aggregate cannot be dispensed in time, waiting for weighing, or oversupply. There are drawbacks such as overflow.
[0005]
In view of the above points, the present invention has an aggregate storage bin structure that can increase the amount of storage of a specific aggregate when a specific mixture is manufactured using only a specific type of aggregate, and is also suitable for manufacturing a special mixture. The purpose is to provide an asphalt plant.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vibration sieve that screens aggregates heated and dried by a dryer according to particle size, and an aggregate storage bin that stores the aggregate screened by the vibration sieves according to particle size in a compartment. in asphalt plant arranged and aggregate measuring tank and mixer support to the lower bone material storage bin, with disposing the outer compartment chamber and along the outer wall of the compartment of the aggregate storage bin, the external sections In the lower part of the chamber, an aggregate discharge gate for discharging aggregate to the mixer is disposed, and on the wall surface of the partition chamber, an aggregate inlet that allows inflow of aggregate from the partition chamber to the external partition chamber In the aggregate inlet, an opening / closing lid that controls opening / closing of the opening is disposed , and the capacity of the specific compartment can be increased by combining the specific compartment and the external compartment, Special asphalt using aggregate of specific particle size When producing compound is characterized by its lid compartment for storing aggregate particle size was opened and so as to increase the storage capacity by using the external compartment for storage of the aggregate of the particle size It is said.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
According to the present invention, when manufacturing an asphalt mixture using a specific type of aggregate such as a drainage asphalt mixture, the aggregate inflow disposed on the wall surface between the specific compartment and the external compartment. The opening / closing lid is opened and the aggregate put into the specific compartment is caused to flow into the external compartment through the aggregate inlet. In this way, a specific type of aggregate is also stored in the external compartment so as to increase the storage amount to prevent the aggregate from being cut or overflowed, so that a stable shipment of a special asphalt mixture can be achieved.
[0008]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
Reference numeral 1 denotes a mixing tower of an asphalt plant, and a vibrating sieve 2 is mounted on the top of the mixing tower. Heated aggregate dried by a dryer (not shown) is loaded into the vibrating sieve 2 from the charging chute 3, and the aggregate is sieved according to the particle size by vibration generated by the vibrator 4.
[0010]
Inside the vibrating sieve 2, several stages of mesh screens are arranged. For example, at a position facing the uppermost charging chute 3, a screen mesh 5 a of square holes (or round holes) having a mesh size of 25 mm, A screen mesh 5b having a mesh size of 15 mm is arranged in the lower stage, a screen mesh 5c having a mesh size of 6 mm is arranged in the lower stage, and a screen mesh 5d having a mesh size of 3 mm is arranged in the lowermost stage.
[0011]
An aggregate storage bin 6 is disposed below the vibration sieve 2, and the aggregate storage bin 6 appropriately partitions the inside of the bin to form compartments 6 a, 6 b, 6 c, 6 d, 6 e, and the vibration sieve 2 The sand of 2.5 mm or less and the aggregate of 2.5 to 5 mm, 5 to 13 mm, 13 to 20 mm, 20 mm or more are stored in the respective compartments. The aggregate stored in the compartments 6a, 6b, 6c, 6d, and 6e is discharged from the aggregate discharge gates 7a, 7b, 7c, 7d, and 7e disposed at the lower part.
[0012]
An external compartment 8 is provided along the outer wall from the compartment 6b to the compartment 6d, and an aggregate payout gate 9 is provided at the lower portion to deliver the stored aggregate. I am doing so. As shown in FIG. 3, the aggregate stored in each of the compartments 6 b, 6 c, 6 d flows into the external compartment 8 on the wall surface of the compartments 6 b, 6 c, 6 d on the side where the external compartment 8 is disposed. Aggregate inlets 10b, 10c, and 10d are respectively drilled, and opening and closing lids 11b, 11c, and 11d for opening and closing the openings are provided on the aggregate inlets 10b, 10c, and 10d, respectively. The open / close lids 11b, 11c, and 11d are opened and closed by extending and contracting the cylinders 12b, 12c, and 12d, respectively, and the capacity of the specific compartment is increased by combining the specific compartment and the external compartment. Try to increase.
[0013]
FIG. 4 shows another embodiment in which two external compartments are provided. The part extending from the compartment 6a to the compartment 6b and the part extending from the compartment 6c to the compartment 6d are arranged along the outer wall. External compartments 13 and 14 are provided respectively. Aggregate inlets 10a, 10b, 10c, and 10d are respectively drilled in the wall surfaces of the compartments 6a, 6b, 6c, and 6d with respect to the external compartments 13 and 14, respectively. Opening and closing lids 11a, 11b, 11c, and 11d for opening and closing this opening are attached to 10a, 10b, 10c, and 10d from the external compartments 13 and 14 side, and the cylinders 12a, 12b, 12c, and 12d are expanded and contracted. The opening / closing lids 11a, 11b, 11c, and 11d are opened and closed, respectively. Aggregate dispensing gates 15 and 16 for dispensing aggregate are disposed below the external compartments 13 and 14.
[0014]
Reference numeral 17 denotes an aggregate measuring tank disposed in the lower part of each compartment. The aggregate dispensing tank 17 sequentially accumulates and measures the aggregate, and the aggregate measuring tank 17 measures each desired aggregate. These are put into the lower mixer 18 and separately metered stone powder, asphalt or the like is added and mixed to prepare a desired asphalt mixture.
[0015]
Thus, when the volume of a specific compartment is increased using the external compartment, the opening / closing lid attached to the desired compartment is opened to open the aggregate inlet to the external compartment 8, and the desired compartment Aggregate to be stored in the chamber is caused to flow into the external compartment 8 through the aggregate inflow port to increase the storage amount of desired aggregate.
[0016]
For example, when manufacturing an asphalt mixture using the compartments 6a, 6b, 6c, 6d and the external compartment 8 among the compartments, if the volume ratio of each compartment is set as follows,

By combining the external compartment 8 with respect to the compartment 6d from the compartment 6b, the capacity of the specific compartment can be increased,

Special volume asphalt mixture that uses only two kinds of aggregates, such as drainage asphalt mixture, as well as the standard asphalt mixture. The volume ratio of the compartments suitable for the blending can be set even when manufacturing the product.
[0017]
Further, in the case where two external compartments are arranged as shown in FIG. 4, for example, the capacity ratio of each compartment is set as follows:

The capacity of a specific compartment can be increased by combining the external compartment 13 with the compartment 6a and the compartment 6b and combining the external compartment 14 with the compartment 6c and the compartment 6d.

The capacity ratio of the four compartments can be obtained.
[0018]
In addition, the arrangement example of the external compartment shown in the present embodiment does not limit the arrangement and number of the external compartments, and various other arrangement examples of the external compartments are conceivable. It goes without saying that the arrangement and number can be changed without departing from the scope.
[0019]
【The invention's effect】
As described above, in the asphalt plant according to the present invention, the external compartments are arranged along the outer walls of the compartments of the aggregate storage bin, and the aggregate of the aggregate from the compartments to the external compartments on the wall surfaces of the compartments. The same kind of aggregate can be stored in a specific compartment and an external compartment by opening an aggregate inlet that allows inflow and opening an opening / closing lid disposed at the aggregate inlet. Therefore, it is possible to increase the storage amount of the specific aggregate required at the time of producing the special mixture, and it is possible to produce the special mixture efficiently.
[Brief description of the drawings]
FIG. 1 is a partially cutaway schematic front view of an embodiment of an asphalt plant of the present invention.
FIG. 2 is a partially cutaway schematic side view of FIG.
FIG. 3 is an enlarged longitudinal sectional view of a main part of FIG. 2;
FIG. 4 is a schematic front view corresponding to FIG. 1 showing another embodiment.
[Explanation of symbols]
2 ... Vibrating sieve 6 ... Aggregate storage bins 6a, 6b, 6c, 6d, 6e ... Compartment 7: External compartments 10a, 10b, 10c, 10d ... Aggregate inlet 11a, 11b, 11c, 11d ... Open / close lid 13 14 ... External compartment

Claims (1)

Vibrating sieve that screens aggregates heated and dried by a dryer according to particle size, aggregate storage bin that stores aggregates screened by vibrating sieve according to particle size, and aggregate measurement below the aggregate storage bin in the bath and asphalt plant placed a mixer support, along with arranging the outer compartment chamber and along the outer wall of the compartment of the aggregate storage bin, the aggregate into the mixer in a lower portion of the external compartment While disposing an aggregate payout gate, an aggregate inlet allowing the inflow of aggregate from the compartment to the external compartment is drilled in the wall surface of the compartment, A special asphalt mixture that uses an aggregate of a specific particle size is provided with an open / close lid that controls opening and closing of the opening, and a specific compartment can be combined with an external compartment to increase the capacity of the specific compartment. When manufacturing, its grain size To open the lid of the compartment for storing wood, asphalt plant, characterized in that so as to increase the storage capacity by using the external compartment for storage of the aggregate of the particle size.

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