Types of sand washing vibrating screen machines
A sand washing vibrating screen machine performs two critical tasks: screening and washing. Its primary function is to separate undesirable particles like clay, silt, and dust from the sand. The added water aids in both binding these finer particles and allowing for easier separation. The separated undesirable particles are then allowed to exit the system as the clean, desirable sand is retained for stockpiling.
Industrial sieve screening machines come in a variety of models and types. Below are some of the most notable ones.
- High-frequency vibrating screens: These work on the principle of stratification and separation through high-frequency motion. This type of screen creates a vertical firing motion that results in the separation of smaller particles. It is commonly used for the separation of fine aggregates in wet processing.
- Linear vibrating screens: This screen is commonly used for the separation of larger aggregates and heavier materials. It works by the distribution of materials along the length of the screen. The screen then produces a back-and-forth motion that results in the separation. This type of vibrating screen kingly features two or more screening decks within a screen box.
- Circular vibrating screens: This features an elliptical motion in a circular direction. The screens are usually installed on a decline. The vibrating circular screen can be likened to a dewatering device, separating water from the material. The circular vibrating screen is said to be very efficient when it comes to the separation of larger particles.
- Dewatering screens: This type of vibrating screen usually uses a combination of vibratory motion and gravity to separate water from sand and fines. The dewatering vibrating screen has a high-frequency low-amplitude design that enables the separation of moisture from the material while retaining fine particles.
- Horizontal screens: This is a type of vibrating screen that makes use of horizontal or slightly inclined screens to separate materials. The horizontal screen is usually mounted on a flat surface and is powered by vibrating motors or exciters. The horizontal screen functions essentially by the stratification of materials. It is also commonly used for the separation of coal, aggregates, and other smaller materials.
- Flip-flow screens: This is sometimes referred to as elastic screens. This type of vibrating screen is mounted on elastic mats or membranes, which flip back and forth to separate materials. The flip-flow screen machine is adept at separating sticky, wet, and coarse materials. It is also known for its ability to produce multiple fractions within a single process. Those qualities enable the flip-flow screen machine to stand out when it comes to the separation of sand, gravel, and construction and demolition waste.
Specifications & maintenance of sand washing vibrating screen machine
Specifications
- Power: 5.5 kw (or customized)
- Capacity: 20-180t/h (or customized)
- Size: L x W x H: 1,500 x 1,000 x 600 mm (or customized)
- Conveying angle: Maximum 18 degrees
- Material: Carbon steel (Q235A)
- Shaft diameter: 100 mm
- Operating Temperature: -20°C to 40°C
- Spray Pressure: 2–5 kg/cm2
Note: The specifications mentioned above are just examples. Specifications may vary depending on manufacturers and model types.
Maintenance tips
- Check for signs of wear: Regularly inspect the washing screens for signs of wear to the screening mesh. Any signs of clogging or damage should be addressed immediately to prevent leakage.
- Lubricate moving parts: For machines with moving parts such as shafts and bearings, appropriate lubrication should be provided to ensure smooth operation. Select lubricants that comply with the equipment's maintenance manuals, and apply them in accordance with the prescribed frequency and quantity.
- Maintain proper water flow: The sand washing machine needs an appropriate water flow to maintain effective operation. Screen wash out the flow channel regularly to avoid blockage, and adjust the water flow to ensure that it is within the prescribed range.
- Pay attention to noise and vibration: During the vibrating screen machine's operation, pay attention to its noise and vibration performance. If there is any abnormal noise or vibration, immediately troubleshoot to check for loosening, wear, or damage of parts, and take the necessary treatment.
- Maintain overall cleanliness: Keeping the vibrating screen machine and washing screens clean is important for maintenance. Regularly clean the machine to remove dirt, debris, etc., to avoid accumulation and contamination of other parts.
- Follow the maintenance manual: Each sand washing vibrating screen machine has its own maintenance manual and specifications. When maintaining the machine, be sure to follow the manual instructions and comply with the operating standards to ensure safety and equipment effectiveness.
Scenarios of sand washing vibrating screen machines
Washing and screening sand are important for the construction sector as it directly impacts the quality of concrete and other building materials. A sand washing vibrating screen machine performs both tasks in one equipment. This multitasking device has several scenarios of use in construction, mining, and other industries.
Because of the growing demand for high-quality aggregate for construction, the scenario for using a sand-washing machine has extended beyond just the mining industry. These machines are now crucial in several industrial sectors where the quality of raw materials makes a huge difference.
- Industry: Industries as diverse as cement, glass, and casting depend on quality raw materials to make their final products. Glass manufacture, for example, requires sand that is free of impurities and mineral content to produce clear and colorless glass. Similarly, the casting industry strives to have excellent quality molds free of imperfections. For these industries to achieve the desired level of quality, they need to screen and wash sand, which removes impurities and undesired materials. A sand washing machine with a vibrating screen fulfills this crucial need.
- Agriculture: Agriculture depends on different kinds of soil or sand to supply minerals to crops. Several crops recover silica from the sandy soil. Also, farmers in coastal regions perform activities like shrimp farming, where the quality of soil or sand becomes critical for success. Such farms may also need to filter out marine creatures like crabs, mollusks, and shells. A sand washing machine with a vibrating screen can help agricultural producers and marine farmers obtain quality soil. It can also help filter unwanted objects.
- Environmental cleaning: The sand washing machine's vibrating screen performs a critical task of cleaning the environment by washing and screening contaminated sand. This contaminated sand can be found on riverbeds, beaches, or lakes due to industrial dumping or plastic pollution. Environmental organizations can use the sand washing machine to clean impurities, pollutants, and plastics. Such machines can help restore the ecosystem and biodiversity.
How to choose sand washing vibrating screen machines
Business buyers need to consider a wide range of factors when choosing sand screening machines for sale for their specific industrial applications. They should focus on key specifications like screening area, materials used in making the screen surfaces and frame, mesh size, and adjustment features.
- Screening area: The screening area of a vibrating screening machine refers to the dimension of the screen surface available for sifting sand or other granular solid materials. The screening area affects the productivity and the volume of materials that can be processed within a particular timeframe. Buyers need to choose the screening area that aligns with their project requirements. Generally, the larger the screening area, the higher the productivity. However, a larger screening area may occupy more space. Hence, it is important to consider the available area and the needs of the project to get a perfect screening area.
- Materials: The materials used in constructing the vibrating screen machine influence the quality and durability of the device. Screens made with stainless steel are resistant to corrosion, while those with carbon steel offer higher strength and durability. Carbon steel durability makes it ideal for dealing with heavy-duty materials, but it is prone to rust when exposed to moisture. Consider the project requirements and environmental conditions to get a vibrating screening device made from the ideal material.
- Mesh size: The mesh size of a vibrating screen machine is an important factor that influences the quality and size of sand or other material that can be screened. A vibrating screen with larger mesh sizes will allow more air, water, and particles to pass through, while one with finer mesh will trap more solid particles and give better separation. Choose a sand washing vibrating screen machine with a mesh size that aligns with the desired end product.
- Adjustment features: Most modern sand screening machines have adjustment features that allow operators to modify the amplitude, frequency, and separator dimensions of the vibrating screen. These adjustment options offer flexibility in the separating and sieving processes. Screens with different mesh sizes can also be swapped. When buying vibrating screens, choose those with adjustment features that allow flexibility in operation. It will enable the machine to meet the project needs efficiently.
Sand washing vibrating screen machine FAQ
Q1: What are the limitations of using a vibrating screen for sand washing?
A1: The main limitation of using a vibrating screen for sand washing is the possible separation of smaller fine particles. Furthermore, the high-energy use of vibrating screens may not make it economically ideal for smaller operations.
Q2: Can the sand washing vibrating screen machine work with a wet material?
A2: Yes, sand washing screens are designed to work with both dry and wet materials. In fact, some moisture in the material can help improve the screening efficiency by reducing friction between the particles.
Q3: How do proper vibrating screen maintenance and repairs affect production efficiency?
A3: Maintaining the sand vibrating screen machine and promptly repairing it can help the production flow. This is because the screening machine will be working optimally, reducing the possibility of faults that can cause downtime.
Q4: How do mesh sizes affect the screening outcome of the sand washing vibrating screen machine?
A4: The mesh size used in the vibrating screen will determine the materials that will pass through and the quantities. Selecting the right mesh size is crucial to achieving the desired production and further processing of materials.
