JPH09299824A - Ballast separating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve classification efficiency by separating and selecting ballast surely from residual concrete or earth and sand etc. SOLUTION: In a separator, an inlet 3 is formed above an equipment box 1, and a discharge opening 4 is formed below the box 1. Besides, several screens 10a-10e in which numbers of round bars of the same length are fixed on a receiving member 12 in parallel at appropriate intervals are formed, and rows of the screens 10a-10e are formed between the inlet 3 and the discharge opening 4 so that the bars are arranged in a downward-slanted posture toward the discharge opening 4, and steps 15 are generated between the lower ends of the bars of each screen 10a-10e and the upper ends of the bars of the screens 10a-10e located below it. A retention part 14 in which the inclination of the screens is reduced is formed in an intermediate height part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravel sorting machine for separating and sorting gravel from unconsumed concrete such as gravel and sand, or residual soil.

[0002]

2. Description of the Related Art A gravel sorter disclosed in Japanese Utility Model Publication No. 61-29489 is a device devised by the inventor of the present invention. To form a number of screens made by fixing a large number of round bars parallel to the receiving member in parallel at appropriate intervals, and the round bars serve as discharge ports between the charging port and the discharging port. By arranging multiple rows so that they are inclined downward, and arranging so that there is a step between the lower end of the round bar of each screen and the upper end of the round bar of the screen below it, It was possible to effectively prevent clogging.

[0003]

However, in the conventional gravel sorter described above, the screens are arranged in a straight line from the inlet to the outlet, so that concrete and earth and sand from the inlet vigorously with water. When inflowing, sand and water reached the outlet without falling from between the round bars of the screen, and there was a risk that separation and sorting would not be performed as desired. Therefore, further improvement of the equipment was desired so that the gravel could be separated and sorted.

[0004]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned problems. An inlet is provided above the container box and an outlet is provided below the container box, while a large number of round bars having the same length are provided. Forming several screens fixed in parallel to the receiving member with an appropriate interval so that the round bar is in a downwardly inclined posture toward the discharge port between the input port and the discharge port. In a gravel sorter that is installed in multiple rows and that has a step between the lower end of the round bar of each screen and the upper end of the round bar of the screen located below it, the inclination of the screen at the intermediate height part It is characterized in that a retaining portion having a gentle angle is provided.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. In FIG. 1, 1 is a container box of this sorter, and 2 is a funnel-shaped chamber formed in the lower part thereof. Also,
An inlet 3 is provided above one side wall 1a of the container box 1, an outlet 4 is provided below the other side wall 1b, and an outlet pipe 5 is connected to the outlet 4. 6 is a flow rate adjusting valve provided at the lower end of the funnel-shaped chamber 2, and 7 is the valve 6
It is a transfer pipe extending downward through. Reference numeral 8 denotes a window for maintenance and inspection which is opened on the upper surface of the container box 1. Also, 9a-
9j is a fixed beam installed between the side walls 1c and 1c of the container box 1.

As shown in FIG. 2, a plurality of round bars 11, 11 ... Of the same length are fixed by welding on the receiving members 12, 12 in parallel so that a proper gap is maintained. The screen, 13 is the round bar 11, 11, ...
It is a reinforcing member made of a round bar welded to the lower side.

By hanging the screens 10a to 10e on the fixed beams 9a to 9j, the screens 10a to 10e are inclined between the charging port 3 and the discharging port 4 toward the discharging port 4 as shown in FIG. The upper screen 10a has an inclination angle of 60 degrees, the lower screen 10b has an inclination angle of 50 degrees, and the intermediate height portions of the screens 10c and 1 have a tilt angle of 50 degrees.
The inclination angle of 0d is 45 degrees, and the lower screen 10e
The inclination angle is set to 50 degrees, and the retention portion 14 is formed in the intermediate height portion with the inclination angle being gentler than the other portions. And the round bars of each screen 11, 11, 11, ...
Are arranged so that a step 15 is formed between the lower end of the round bar and the upper ends of the round bars 11, 11, 11 ,.
In addition, 16 is an eaves plate fixedly mounted on the inner surface of the side wall 1a so as to cover the upper end of the upper screen 10a, and 17 and 17 are inner surfaces of the side walls 1c and 1c so as to cover both side edges of the screens 10a to 10e. The eaves plate is fixed to the above, and these eaves plates seal the earth and sand so as not to drop off laterally.

For this reason, concrete poured into the container box 1 through the inlet 3 together with water slides down on these screens, and sand and cement with small particles are added to the round bar 1.
From the gap between 1, 11, ..., It drops into the funnel-shaped chamber 2 and is discharged from the valve 6 and the transfer pipe 7. Gravel with large particles is discharged from the discharge port 4 and the discharge pipe 5 without dropping from between the round bars. It

Here, the screen 10c at the intermediate height portion,
Since 10d has a gentler inclination than the other screens 10a, 10b, 10e, the concrete flowing in from the charging port 3 is decelerated at this portion, and the sand and cement particles in the concrete are made larger in this retaining portion 14. It can be dropped between round bars. Therefore, a large amount of sand and cement particles will not flow out to the discharge port 4 as they are without sufficient separation.

By providing the step 15, the gravel sandwiched between the round bars of each screen is easily discharged to prevent the clogging of the gravel.

[0011]

As described above, according to the present invention, since the inclination angle of the screen is made gentle at the intermediate height portion and the retention portion is provided, the separation and selection of the gravel can be performed more reliably. There is a beneficial effect of improving the classification efficiency.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a gravel sorter according to the present invention.

FIG. 2 is a perspective view of a screen according to the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Container Box 3 Input Port 4 Discharge Port 10a to 10e Screen 11 Round Bar 12 Receiving Member 14 Retaining Part 15 Step

Claims (1)

[Claims] 1. A plurality of round bars of the same length are fixed to a receiving member in parallel at appropriate intervals while an inlet is provided above the container box and an outlet is provided below. A plurality of rows of the screens are formed between the charging port and the discharging port so that the round bars are in a downwardly inclined posture toward the discharging port, and at the lower end of the round bar of each screen and below it. In a gravel sorter arranged so that a step is formed between the screen and the upper end of the round bar, the gravel sorter is characterized in that a retention part with a gentle inclination angle of the screen is provided at the intermediate height part. Machine.