Screw sand washer operation manual Install

The XL Screw sand washer (or spiral sand washing machine)produced by Staurk Machinery is optimized for washing, grading, and dewatering sand units such as sand and quartz sand. Its novel sealing structure allows for the adjustment of overflow weir plates. Ensure that this series of products is efficient and durable. 

1.Working principle and structure

This machine is composed of main components such as weir plate, shell, spiral solid, reducer, and motor. It has three functions: cleaning, dehydration, and grading.

The sand and gravel washing machine is arranged at a 15 degree tilt, and the lower part of the water tank is surrounded by a sedimentation tank with three side weir plates. The spiral head sank into the sedimentation tank,spiral is continuously rotated by an electric motor through a reducer, and is fed with clean water through a porous plate at the bottom of the sedimentation tank.

The clear water flow generated by the porous plate forms an upward flow, carrying foreign objects with low specific gravity to the surface and overflow outside the weir plate,complete cleaning. Particles with high specific gravity sink to the bottom of the trough and are bent at the bottom of the trough to be pushed upwards by spiral blades. Due to the length of the trough exceeding the lower horizontal line by a suitable length, excess water is removed from the sand and gravel during the upward pushing process, and the drained water flows into the sedimentation tank from the drainage ditch on the other side of the trough bottom.

The grading of materials is achieved by overflowing fine particles that do not meet the standard requirements outside the weir. The control method isadjust the height of the overflow weir and adjust the screw speed.

2.Installation and debugging of the machine

After receiving the device, the user should inspect and count it to eliminate any potential issues that may arise during transportation.

Installation and construction personnel should be familiar with the structure, performance, and technical requirements of this product. Understand the necessary operating procedures and develop appropriate installation process specifications in advance.

The installation site requires lifting equipment with sufficient lifting capacity. Steel ropes are hung on the lifting ears on both sides of the machine body (no other parts can be hung), and 120 × 120 square timber is used to support between the two side plates to prevent deformation.

The machine must be shipped with caution and not dragged on the ground to prevent deformation of the shell and damage to the parts.

The sand washing machine bracket should be installed on a reinforced concrete foundation. The foundation height, depth, and area size should be calculated separately based on local soil conditions. The installation base should be flat and have sufficient space for the installation of conveying equipment and maintenance.

Carry out preparatory work

① Check and confirm that there are no other foreign objects inside the sand washing machine, and that the spiral body operates freely inside the shell.

② Check and confirm that the oil level inside the reducer reaches 2/3 of the oil level. If the fuel is insufficient, it should be refilled to 2/3 of the fuel level. The reducer oil is GB5903-86 68 # medium load industrial gear oil, which should be replaced every 6 months.

③ Check if there is an appropriate amount of grease (EL-3 # lithium based oil) inside the bearing.

④ Check if the fastening components are securely fastened. Check if the inlet and outlet pipes are correct and if the pipelines are unobstructed.

① The no-load test must follow the principle of jogging first and then continuous operation. Confirm that there are no abnormal sounds before conducting an empty load test. The continuous time for air freight transfer shall not be less than 2 hours.

② During air transportation, it is required that the machine runs smoothly and all operating components operate flexibly without any collision or rubbing.

③ The rotation should be smooth and reliable, without any abnormal noise, impact, vibration or other phenomena.

④ The temperature of the gear reducer and bearings is stable, with a production temperature not exceeding 30 º C and a maximum temperature not exceeding 60 º C.

⑤ Gear reducers and screw shaft extensions must not leak oil.

⑥ The shell must not leak water.

After the machine's no-load test condition is normal, the load test can be carried out, and the load test run time should not be less than 4 hours.

After the load test run is completed, all connecting bolts and fixing positions should be checked and necessary adjustments should be made.

3.Operating procedures, maintenance, and upkeep of the machine

Operators should understand and be familiar with the safety operating procedures of the equipment.

The operator should understand and be familiar with the situation of this equipment. When there is an abnormal situation with the device, it has the ability to take appropriate measures to handle it.

Before starting the equipment, the following preparations must be made:

① Carefully read the duty record and handle any outstanding issues from the previous shift.

② Carefully check all fasteners for tightness, and if any looseness is found, it should be eliminated immediately.

③ Check whether the reducer and bearings are lubricated on schedule.

④ Check if the temperature of the reducer is normal and if there is no abnormal noise during equipment operation.

⑤ Prohibit stopping the machine with materials or continuing to supply materials after stopping.

⑥ Clear the blockages in the machine and the surrounding environment when leaving work.

The machine should be started in an unloaded state and only allowed to stop when all materials have been removed from the machine.

If any abnormal phenomenon is found during the operation of the equipment, it should be stopped immediately to identify the cause, eliminate the fault, and then restarted. The user should prepare their own operating procedures for this machine based on the content of this manual and in combination with conventional requirements.

4.Safety precautions

1.Electrical equipment should be grounded, wires should be reliably insulated, and installed in conduit.

2.When the machine is under maintenance, the power should be cut off first.

3.It is strictly prohibited to put non compliant materials into the machine to avoid damaging it.

4.During machine operation, it is strictly prohibited to carry out any adjustments, cleaning, maintenance, or other work to avoid danger.