JPH04126573A - Conveyer having classifying function - Google Patents

Abstract

PURPOSE:To attain an automatic classification during conveying the dirty sand by disposing a primary discharge chute onto a lower part of a screen positioned on an upper part of a conveyer trough and a secondary discharge chute on to the lower part of the upper part of the screen and executing discharging after classification depends on their particle diameter. CONSTITUTION:The dirty sand is transferred to the upper direction by the driving of the conveyer 1 in the conveyer trough 3 disposed with inclination. When the dirty sand arrives at the upper edge part 1, as the screen 5 having necessary mesh width is disposed in this conveyer trough 3, sand, etc., having smaller mesh width than screen mesh width is removed by the primary discharge chute 6, and a coarse and having large mesh width is conveyed further on this screen 5 and discharged from the secondary discharge chute 7. By this means, the dirty sand is classified automatically by conveying without use of the classifier, etc.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a conveyor for conveying dirty sand, etc., which is equipped with a classification function to classify and collect particles according to particle size during conveyance. be.

[Conventional technology]

Conventionally, sludge collected by raking and collecting from a settling pond is a mixture of small sand and large pebbles. This is then washed to remove filth, etc., and then dumped in a landfill or the like, or reused for agricultural and horticultural purposes.

[Problem to be solved by the invention]

If collected and washed polluted sand is disposed of in a landfill, etc., there is no problem even if the particle size is uneven, but if it is to be reused for agriculture, horticulture, or civil engineering, a method that keeps the particle size constant is recommended. It's very convenient.

However, conventional conveyors do not have a classification function, and it is necessary to use a combination of a conveyor and a classifier.

In the present invention, one conveyor classifies the dirty sand while it is being transported.
The purpose is to collect them individually.

[Means to solve the problem]

The present invention was made in order to achieve the above object, and in a conveyor for conveying a fixed amount of dirty sand, etc., a screen is provided at the upper part of the conveyor trough, a primary discharge chute is provided at the lower part of this screen, and a primary discharge chute is installed at the lower part above the screen. The gist is that a secondary discharge chute is provided at each location, and the particles are classified and discharged according to their size.

[For production]

The dirty sand is conveyed upward by the drive of the conveyor inside the conveyor trough installed at an inclination, and when it reaches the upper end of the conveyor, a screen of the desired width is installed on this conveyor trough, so this screen part Sand, etc. smaller than the mesh width of the screen is removed from the first discharge chute, and small sand, etc. larger than the mesh width is further conveyed over this screen and discharged from the second discharge chute. It is automatically classified during transportation without using it.

〔Example〕

The conveyor with classification function of the present invention will be explained below based on the illustrated embodiment.

In the figure, 1 is a conveyor such as a screw conveyor or a flight conveyor. At the bottom of this conveyor 1 is a part 2 of a hopper for supplying collected dirt, etc., and a part of a hopper 2 connected to the lower end of this hopper 2 and extending obliquely upward. The hopper 2 has a required capacity, the conveyor trough has a required length, and the height of the upper part of the trough is determined to have a predetermined lifting height. From the bottom of this hopper, conveyor trough 2
A screw or flight 4 is arranged over the entire length, and by driving the screw 4, the dirty sand etc. thrown into the hopper 2 are sequentially conveyed in fixed quantities through the trough by the screw. At the bottom of the upper end of the conveyor trough 3, a screen 5 is provided over a required length as shown in detail in FIG. 2V and FIG. The trough at the location where the screen 5 is provided is in an expanded state as shown in FIG. 2, and a primary discharge chute 6 is provided below the screen 5 and joined to the trough. Further, the bottom surface of the trough 3 above the screen 5 is opened, and a secondary discharge chute 7 is disposed below the bottom surface, and the upper end of the chute 7 is joined to the trough.

Furthermore, a nozzle 8 that sprays cleaning water is placed above the conveyor trough 3 where the screen 5 is installed, and by spraying the cleaning water toward the screen, it adheres to relatively large particles such as pebbles. Small particles of sand, etc., which have been conveyed through the conveyor either as particles or mixed with small sand, etc., are washed off and discharged to the primary discharge chute via a screen. After the small sand particles have been washed off the screen in the shower, the pebbles that are larger than the mesh width of the bar screen 5 are conveyed by the screw 4 to the end of the conveyor trough and sent to the secondary discharge chute 7. It is discharged.

By providing separate secondary discharge chutes 6.7, sand, empty pebble cans, etc. can be collected separately.

Further, in the above embodiment, the classification of collected dirt was explained, but this can also be applied to various substances other than dirt that require classification.

9 is a sprocket wheel for driving the screw, and although it is not shown in the figure, this sprocket wheel 9 is used by the drive device.
is rotated to drive the screw 4. This drive device may be a constant speed drive or a variable drive type.

〔Effect of the invention〕

According to the present invention, the conveyor is a conveyor table that supplies a fixed amount of dirty sand, and the upper part of this conveyor is provided with a screen and primary and secondary discharge chutes, so that the dirty sand conveyed by this conveyor is fine at the screen position. Sand and large stones are naturally classified and can be collected individually.

[Brief explanation of the drawing]

The drawings show an embodiment of the conveyor with a classification function according to the present invention, in which FIG. 1 is a longitudinal sectional view of the main part, FIG. 2 is a longitudinal sectional side view of the same, and FIG. 3 is a schematic explanatory diagram of the whole. 1 is conveyor, 2 is hopper, 3 is conveyor trough, 4
is a screw, 5 is a screen, 6 is a primary discharge chute, 7 is a secondary discharge chute, and 8 is a nozzle.

Claims (1)

[Claims] (1) In a conveyor that conveys a fixed amount of dirty sand, etc., a screen is provided above the conveyor trough, a primary discharge chute is provided below the screen, and a secondary discharge chute is provided below the screen, A conveyor with a classification function that classifies and discharges particles according to their size.