Hydrocyclone drainage principle
Writer： admin Time：2020-08-10 16:40 Browse：℃
Ore crushing is a very important step in mining processing. Main technical performance: Heart force is dozens or even a hundred times larger than gravity, so that the sedimentation speed of the particles is increased by a corresponding multiple, which can not only increase the production capacity, but also reduce the lower limit of the classification (separation) particle size, so the cyclone is suitable for all kinds of fine particles. For the classification of granular and fine-grained materials, the upper limit of the processing size is 0.4～0.044 mm.
The upper part of the cyclone is a hollow cylinder, and the lower part is an inverted cone communicating with the cylinder. The two form the working simplified part of the hydrocyclone. The upper end of the cylindrical cylinder is equipped with a feed pipe tangentially, and the top is equipped with an overflow pipe and an overflow conduit. There is a grit port at the bottom of the conical cylinder. The parts are connected by flanges and screws. The mine mouth, barrel and grit mouth are usually lined with rubber, polyurethane, silicon carbide or diabase cast stone to reduce wear and replace them after wear. The grit port can also be made adjustable, and its large scale can be adjusted according to needs.
Working principle: Hydrocyclones are divided into pressure and no pressure according to the feeding method. Generally, pressure feeding is often used, and the slurry is operated at a pressure of 49-245 kPa and a speed of 5-12 m/s. The structure of the hydrocyclone indicates that the cylindrical cylinder immediately rotates around the axis at a high speed, generating a large centrifugal force. Particles with different particle sizes and densities in the slurry are subjected to different centrifugal overflow duct forces, so their speed, acceleration and direction in the cyclone are also different: coarse and heavy particles are subject to large centrifugal force and are thrown towards The wall of the cylinder spirally spirals down to the bottom and is discharged from the grit port as sediment; the fine and light particles are brought to the center by a small centrifugal force, and form an inner spiral ore flow in the center of the cone to move upward as The overflow is discharged from the overflow pipe.
So how to install? The hot and cold should be separated from each other so that they are not too close. The height of the shower hose is between 1.8M and 2.1M. The hot and cold should be separated from each other so that they are not too close. The height of the shower hose is between 1.8M and 2.1M. Generally, do not go to the top of the installation, all hot and cold water outlets must be level, generally left and right cold, pipe laying needs to be level and straight, cyclone and layout should be safe and reasonable.
After professional treatment, PPR waste can be reused in the production of pipe fittings. As long as the recycling amount is scientific, the quality of the pipe fittings will not be affected. Therefore, when pipe waste can be recycled, it can naturally play a good role in energy saving and environmental protection. After laying the row, cover it with filler (such as cinder, construction waste, concrete, etc.) and lay the surface layer.
The cyclone has a certain low temperature brittleness below 10°C, so be careful when constructing in winter. When cutting pipes, avoid using electric saws, hand saws and fast cutting, and slow cutting. The installed pipeline should not be subjected to pressure or impact, and should be covered with protective parts if necessary. After the pipe is melted, carefully check whether the pipe is damaged. Especially the inner wall, because the tube is first destroyed when subjected to external force, and then to the outside. Avoid using pipes with broken inner walls but unbroken outer pipes. The pressure test must be performed before direct installation, and the pipeline should be buried directly after installation. The cold pressure test pressure is 1.5 times the working pressure of the system, not less than 0.9MPa; the hot test pressure is twice the working pressure, but not less than 1.2MPa.
In order to make the most of it, cyclones people not only need to make sure they are correct, but they should also make sure they are installed correctly. So, how should these components be installed? The following is a brief introduction to the problem. As the saying goes, a good distant relative is not as close as a neighbor. Once the neighboring domestic water is damaged, the relationship between neighbors will be seriously affected.
As a professional enterprise in the production of plastic pipes and molds in China, the company is committed to serving the society, committed to the research and development of new green environmental protection pipes, and pursuing sustainable development. The company not only contributes high-tech and high-quality products to the society, but also provides perfect after-sales service and technical guidance. The company takes green building materials as a starting point to meet the growing consumer demand and the quality of public life. The following is a brief introduction to the same layer of drainage.
1. Avoiding collisions is very important
Those who know this work should know that it is relatively hard. If it is subjected to external forces and influences during installation, it will cause damage. This will leave hidden dangers for subsequent use, so it should be used in daily use. Avoid impact. The same drainage system has the most fundamental difference from the traditional drainage system; as we all know, under the traditional drainage method, each sanitary equipment must have a P pipe or S pipe to store water and seal water.
Because of the drainage method adopted by the cyclone system, a transparent air column is formed in the middle of the riser, which effectively ensures the pressure balance in the pipeline, and the cyclone greatly improves the drainage capacity. The drainage capacity of the original ordinary single riser D110 has been scientifically tested to be 2.5L/S. The drainage capacity of the system is 10L/S. Branch pipe drainage has also passed the national authoritative test-hydraulic characteristic test. Due to the large change in instantaneous pressure, the original drainage system severely damaged the water seal, causing harmful gases in the pipeline to flow into the room, polluting the air environment. Because the drainage conditions are different from the original mode, the system has excellent ventilation capacity and small pipeline fluctuations, which will not damage the water seal, thereby preventing the leakage of harmful gases in the pipeline.
How to construct the same floor drainage system
1. Preparatory work for approach construction
Cyclone first confessed sanitary ware. Understand the standards, styles and drainage methods of sanitary wares used in model houses or later hardcover houses. Then confess to the construction site. What you need: tape measure, documentation, planning drawings, camera. According to the actual situation of the construction site, the planning plan is optimized and adjusted. And promptly communicate the problems found with relevant personnel and implement them one by one. According to the thickness of the decorative layer of the room outside the bathroom, the thickness of the decorative layer of the bathroom can be adjusted to satisfy the planning of the indoor branch pipe and floor drain. The requirement here is that the slope of the same-layer drainage system pipe should not be less than 2%.
2, during construction
Professional manufacturers must provide someone to guide the construction party to use special pipeline tools, including pipe cutters, pipe welding plates and welding kits; the construction party should understand the project development in time, seize the project nodes and make photographs and transcripts; in the same building in each building In the floor plan, the installed drainage branch pipes and the main drainage branch pipes are centrally connected to the main drainage riser in the same floor.
3, pay attention to engineering craftsmanship and not inverted
Generally speaking, the hydrocyclone process is as follows: material entry → confession start date → on-site setting out of drainage points for toilets, bidets, basins and other sanitary appliances → confession of decorative layer thickness → setting out equipment water tank and bracket fixing screws → pipes Equipment (drainage pipe first and then water supply pipe) → ball passing experiment → trial operation.
The cyclone has the advantages of energy saving, light weight, high strength, low fluid resistance, corrosion resistance, and other benefits, non-scaling, sanitary, heat-resistant, and pressure-resistant. It is a new generation product that replaces galvanized steel pipes. For barrier function, both PP copolymer and homopolymer have very low water vapor penetration rate (0.5 g/ml/100 square inch/24 hours). These properties can be targeted to improve. Stretch blow molded polypropylene bottles have improved the water vapor penetration resistance to 0.3 and the oxygen penetration rate to 2500. Generally, polypropylene has good electrical functions, including: high dielectric strength, low dielectric constant and low loss factor; however, homopolymers are generally selected for power applications.
