EN
In the fields of construction sand and various ore processing, the sand cleaning process is crucial, which directly affects the quality of the finished sand and subsequent applications. As an innovative sand washing equipment, the excavator drum sand washing hopper has become a core tool for improving sand washing efficiency with its outstanding performance.
I. Unique structure lays the foundation for high efficiency
(I) Drum structure design
The main body of the excavator drum sand washing hopper is a drum-shaped structure, usually made of high-strength steel, with good wear resistance and corrosion resistance. The surface of the drum is densely distributed with sieve holes, and the size of these sieve holes is precisely designed according to the particle size of the sand to be washed. Spiral blades are also installed inside the drum. When the drum rotates, the spiral blades can push the sand to roll and move forward in the drum, so that it is fully in contact with the water flow and achieves all-round cleaning. This unique drum structure design greatly increases the contact area and time between the sand and the cleaning medium, and is the key embodiment of the "principle of improving sand washing efficiency by excavator drum sand washing hopper". For example, when processing river sand for construction, the sieve holes with appropriate apertures can effectively screen out impurities such as soil and pebbles, and the spiral blades ensure that the river sand moves in an orderly manner in the drum, ensuring that every grain of sand can be fully cleaned.
(II) Transmission and support system
To ensure that the drum can operate stably and efficiently, the excavator drum sand washing hopper is equipped with a reliable transmission and support system. The transmission system generally adopts hydraulic drive and is connected to the hydraulic system of the excavator. The speed of the drum can be accurately controlled through the hydraulic power output of the excavator. The operator can flexibly adjust the drum speed according to the actual conditions such as the type of sand and the impurity content to achieve the best sand washing effect. For example, for machine-made sand with more impurities, the drum speed is appropriately increased to enhance the cleaning intensity; for purer natural sand, the speed is reduced to avoid excessive cleaning and sand loss. The support system consists of sturdy bearings and brackets to ensure the stability of the drum during high-speed rotation, reduce vibration and wear, extend the service life of the equipment, and provide solid guarantees for efficient sand washing operations.
II. Workflow to achieve efficient cleaning
(I) Feeding link
At the beginning of the sand washing operation, the excavator uses its own mechanical arm to move the drum sand washing hopper to the pile of sand to be washed. Through precise operation, the right amount of sand is loaded into the drum. At this time, it is necessary to pay attention to controlling the feed amount to avoid excessive feed causing excessive drum load and affecting the sand washing efficiency; nor to feed too little, causing the equipment to run idle and waste energy. This involves the key points of feed control in "Operation skills of excavator drum sand washing hopper under different materials". For ore sand with larger particles and higher density, the feed amount can be appropriately reduced; for ordinary construction sand with loose texture, the feed amount can be reasonably increased according to the drum capacity.
(II) Cleaning process
Once the sand enters the drum, the drum starts to rotate under hydraulic drive. At the same time, the external water source sprays water into the drum through the nozzle. Under the action of the rotation of the drum, the water flow is fully mixed and flushed with the sand. Driven by the spiral blades, the sand rolls and moves towards the drum outlet. In this process, dirt, dust and other impurities on the surface of the sand are washed away by the water flow and discharged through the sieve holes on the surface of the drum. The clean sand after washing is discharged smoothly from the drum outlet, completing the entire cleaning process. The entire cleaning process is completed in one go, efficient and continuous, greatly improving the efficiency of sand washing.
(III) Discharge and subsequent treatment
After the cleaned sand is discharged from the drum outlet, it can be directly transported to subsequent dehydration, screening and other processes. Some excavator drum sand washing hoppers are also equipped with preliminary dehydration devices, such as installing a dehydration screen at the drum outlet to further remove moisture from the sand, improve the quality of the sand and the convenience of subsequent transportation and storage. The discharged sewage is collected through a special pipeline and enters the sewage treatment system for purification, realizing the recycling of water resources, meeting environmental protection requirements, and also improving the overall operation efficiency from the side and reducing production costs.
III. Maintenance and maintenance to ensure efficient operation
(I) Daily inspection
To ensure that the excavator drum sand washing hopper always maintains an efficient operating state, daily inspection is essential. Before the operation every day, the operator should check whether the drum surface is worn, whether the screen holes are blocked, whether the transmission parts are loose, etc. If the screen holes are found to be blocked, they should be cleaned in time to ensure that the water flow and impurities can be discharged smoothly; if the transmission parts are loose, they should be tightened immediately to prevent failures during the operation and affect the efficiency of sand washing.
(II) Regular maintenance
In addition to daily inspections, regular maintenance is also required. Regularly maintain the hydraulic system, replace hydraulic oil, filter elements, etc., to ensure the stable operation of the hydraulic system and provide sufficient and stable power for the drum. Check and replace the spiral blades, bearings and other wearing parts inside the drum to ensure the normal operation of the equipment. Regular maintenance can effectively extend the service life of the equipment and reduce the downtime of equipment failures, thereby ensuring the efficient operation of sand washing operations.
The excavator drum sand washing bucket has greatly improved the efficiency of sand washing through its unique structure, efficient work process and scientific maintenance measures. With the growing demand for high-quality sand in industries such as construction and mining, it is playing an increasingly important role and providing strong support for the development of the industry.
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