JPS5842029Y2 - sand washing equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sand washing device for washing contaminated earth and sand mixed with filth, dust, etc.

Sediment that settles in the sewage settling basin is contaminated with filth and dust from the sewage, and if it is just disposed of, there is a risk of dripping sewage or foul odor pollution due to rotting sewage, so contaminated sediment should not be disposed of. It needs to be cleaned and then prescribed.

Conventional cleaning sand equipment blows air into a cleaning tank into which contaminated soil is charged, stirs it, removes dirt, etc. from the soil, and allows the washed soil to settle before being carried out, but the contaminated soil is not sufficiently cleaned. However, there were cases where it mixed with the washed soil and settled and was transported out.

The present invention attempts to propose a sand washing device which eliminates these inconveniences by arranging the inside of the washing tank into two parts, a washing section and a sedimentation section.

The sand washing device of the present invention is equipped with a contaminated soil input device, a water supply port, and an air blowing device at the front of the cleaning tank, an overflow groove for cleaning water at the rear, and a device for carrying out the washed soil at the bottom. A baffle wall is provided between the front and rear parts of the tank so that it can be opened and closed to prevent the movement of washing water, and an embodiment thereof will be described below with reference to the drawings.

1 is a cleaning tank, 2 is a vibrating sieve installed directly above the front of the cleaning tank 1, 3 is a vibrator, 4 is a chute installed below the vibrating sieve 2, and 5 is installed on the discharge side of the vibrating sieve 2. It's a conveyor.

In the front part of the cleaning tank 1, a water supply port 6 is opened at the lower part of the side wall, and above the water supply port 6, a porous pipe 8 for air diffusion is arranged with a mesh plate 7 in between.

An overflow groove 10 having a movable weir plate 9 on the upper side wall is provided at the rear of the cleaning tank 1, and a scum schema 12 having an operating lever 11 is provided at the front side of the overflow groove 10.

The bottom side wall of the cleaning tank 1 is narrowed into a funnel shape from the front side to the rear side, and a discharge part 13 that rises in an inclined manner is connected to the rear end, and a flight conveyor 14 is arranged from this bottom part to the discharge part 13. ing.

15 is a flight conveyor 14 located at the bottom of the cleaning tank 1
16 is the drive shaft outside the cleaning tank 1, 17 is the drive shaft 1
Chute installed directly below 6, 18 is flight conveyor 1
4 is a guide rail, and 19 is an overflow plate provided at the bottom of the cleaning tank 1 between the water supply port 6 and the driven shaft 15.

Between the front and rear parts of the cleaning tank 1, a baffle wall 20 is rotatably provided which is pivotally supported by the side walls at the center of both surveying parts to prevent the movement of cleaning water. It's a lever.

22 is a deck provided on the side of the cleaning tank 1, and is connected to the baffle wall 20 and the operation lever 21 of the scum schema 12.
11 can be operated from this key 22, respectively.

Regarding the above configuration, contaminated sediment discharged from a sedimentation tank etc. for sewage treatment is put into the vibrating sieve 2, coarse garbage floating up due to vibration is discharged from the vibrating sieve 2 onto the conveyor 5, and contaminated sediment is discharged from the chute 4. It is put into the front side of the cleaning tank 1.

On the other hand, cleaning water is supplied into the tank from the water supply port 6, and the contaminated soil thrown into the cleaning water is agitated and cleaned by the air jetted out from the aeration porous pipe 8.

The agitated cleaning water is prevented from flowing to the rear side of the cleaning tank 1 by the baffle wall 20, and the contaminated soil is sufficiently washed and stirred at the front of the tank, and dirt, oil, dust, etc. in the contaminated soil are brought to the water surface. surface.

Then, when the baffle wall 20 is rotated, the floating dirt flows to the rear side of the cleaning tank 1, is collected and discharged by the scum schema 12, and the cleaning water is discharged from the overflow port 10.

The washed earth and sand that is stirred and floated in the washing water settles at the bottom of the rear part of the tank, is carried out by the flight conveyor 14 while being drained midway, and is discharged from the chute 17.

According to the sand washing device of the present invention, the contaminated soil thrown into the washing tank is sufficiently agitated and washed by the air ejected into the washing water on the front side, which is prevented from moving to the rear side by the baffle wall. The washing water is separated from the pollutants, and when the baffle wall is opened, the washing water flowing to the rear side is precipitated and carried out to the bottom side, so there is almost no filth, etc. mixed into the washed soil to be discharged. A compact and highly efficient cleaning device can be obtained.

[Brief explanation of the drawing]

The figure is a sectional view showing an embodiment of the present invention.

Claims (1)

[Scope of utility model registration request] A contaminated soil input device, a water supply port, and an air blowing device are installed at the front of the cleaning tank, an overflow groove for cleaning water is installed at the rear, and a device for discharging washed soil is installed at the bottom. A sand washing device that is provided with a baffle wall that can be opened and closed to prevent the movement of washing water.