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Wheeled sand washer and screw sand washer difference

Sand washing machine is an indispensable equipment in the sand washing process, which can remove the dust and impurities on the surface of sand and gravel to improve the quality of finished product. Screw sand washer and wheel sand washer are two common types of sand washing equipment, what are the commonality and difference between the twos?

Sand washing principle

Wheel sand washers

During operation, motor drives the impeller to rotate slowly after decelerating through the belt, reducer and gear. Sand materials enter the washing tank of wheel sand washing machine through feeding trough, roll under the impeller, and grind each other to remove impurities covering the surface of sand. At the same time, the water vapor layer covering sand particles is destroyed to facilitate dehydration. And adding water to form a strong water flow, taking away foreign matter with small impurities and small specific gravity in time, and discharging it from the overflow port. The clean sand is taken away by blades, and finally poured from the rotating impeller into the discharge chute to complete the cleaning of sand.

wheel sand washer

Sand screw washers

Sand screw washer needs to be arranged obliquely, the lower part of water tank is surrounded by three side slabs to form a sedimentation tank, and the spiral head is not entered into the sedimentation tank. The spiral is driven continuously by the electric motor through reducer, and the washing water is fed from the perforated plate at the bottom of sedimentation tank.

sand screw

Structure appearance

Wheel type sand washing machine has a simple structure, less wearing parts and a small floor space. The impeller drive bearing device is isolated from water and water-receiving materials, which basically avoids the damage caused by water, sand and pollutants, and greatly reduces the failure rate.

wheel sand washing machine

Spiral sand washer has a relatively long body and a horizontal structure, which is simple and straightforward, but its installation is not as convenient as the wheel.

sand screw washer

Sand loss

For the bucket sand washing machine, the amount of water used in sand washing process is small, and the loss of fine sand and stone powder is small, and the grading and fineness modulus of washed building sand can meet the standard requirements.


Compared with the wheel washer, the finished sand will be particularly clean washed by spiral sand washer.

sand washer output

Cleaning ability

Screw sand washer has a strong cleaning ability and can effectively clean the sand and gravel with serious mud impurities, and is often disposed in a large sand production line.

The capacity of wheel sand washer is generally below 80 tons, so it is suitable for the sand production line system of small and medium capacity.


The price of wheeled sand washing machine is relatively low, and it is an economical type of efficient sand washing machine. And its running cost is also low.

The price of spiral sand washing machine is relatively high, and it belongs to the type of high grade large volume sand washing machine.

Single and double optional

The number of impeller can be increased of wheel sand washer according to the condition of material and capacity. Common ones are single impeller sand washers and double impeller sand washers. It is also possible to install a fine sand recovery machine on the side of washing wheel, which is very convenient for docking installation.

double wheel sand washer

If the sand and gravel content is high or capacity is large, the double sand screws can be selected side by side, so it also has a single spiral sand washer and a double spiral sand washer.

double sand screw washer

Through the comparative analysis of the above aspects, the composition of sandstone, expected production capacity, condition of production site and other factors should be considered when selecting the equipment. The two sand washing machine equipments have their own characteristics, you can choose the one that best suits your production requirements to obtain better economic benefits.

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