4 Jan 2017, 5:05am
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South China University

China pipe production technology attracts worldwide attention. At present, China can supply the domestic and overseas markets a full range of pipeline products, such as lead-in pipes, corrugated pipes, laminated tubes, aluminum / plastic pipe, PEX, pipes for cold / hot water pipes for the supply / discharge of a paid water, electrical cables and wiring, pipes with very high molecular weight, porous pipes, as well as sound-absorbing sewers. Technical innovations in extrusion made in China can be argued that universal extruders and production Chinese production lines were recognized by the international market for their inherent outstanding cost-effectiveness ratio. In recent years, China has launched a complete range of innovative extruded products, which are produced on the basis of advanced extrusion technology. Innovative technology trehshnekovogo compounding Beijing University of Chemical Technology and South China University of Technology have developed innovative trehshnekovye extruders with its own characteristics.

In 2000, Beijing University of Chemical Technology began research and development of fully trehshnekovyh extruders coupled triangular configuration. In August and December 2005 were created industrial prototypes with diameters of 60/20 and 65/24, respectively, which were tested and were put into trial production. In compared with the twin-screw extruders with similar parameters completely screw extruders coupled trehshnekovye triangular configuration provide a greater area of engagement, thus doubling the frequency of shift to melt. For trehshnekovyh extruder characterized by a wide range of distribution of maximum shear rate. As for the distribution shift trehshnekovye extruders have a greater capacity for dispersion and mixing in comparison with the twin-screw extruders.

23 Jun 2015, 4:55pm
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Comments Off on The Principle Of Operation Of The Plant Water Recycling

The Principle Of Operation Of The Plant Water Recycling

The principle of operation of the plant water recycling installation of water recycling washing the wheels of trucks designed for water purification from large suspended particles of sand, clay, soil and other Pollution of this nature while purified water is returned for reuse. Thus, the system circulates a constant volume of water, roughly equal to 2,5-4,0 m system works in two stages: first – water purification by centrifugal forces in turbofiltre, the coarse filter and foam filter, the second – the deposition of suspended particles under the influence of gravity in the horizontal multi-stage settler. Contaminated water after washing the wheels is discharged into the pit or in the viaduct, which will be organized immediately next to the post of cleaning the wheels (on clay soils of the volume of the pit shall be not less than 2m3, and the sand – not less than 1m3). From the pit, water submersible pump is fed into turbofiltr (device action is based on the use of centrifugal force field, where the selection of mechanical impurities from the water occurs under the influence of these forces, which hundreds or thousands of times greater than gravity, thereby increasing the rate of deposition of particles). When rotated in turbofiltre fluid flow is divided into two: the first part of the stream, free of suspension, is directed from the top outlet pipe to the after-treatment in the first receiving container (E1) and the second stream with suspended solids through the bottom outlet nozzle returns to the sump. Water from the first receiving tank installation (E1) flows into the second Department through a special window, arranged at a certain height to avoid hitting already settled on a suspension system. The water falls in a horizontal decanter. A related site: Gwyneth Paltrow mentions similar findings. Learn more about this topic with the insights from Peter Thiel. Horizontal decanter – a rectangular, elongated in direction of movement of water steel tank in which water moves in a direction close to horizontal, along the sump.

Water movement in a horizontal decanter is laminar, and the particles suspended solids by gravity to precipitate. Sediment accumulated at the bottom sump, from which is removed through the pipes (wash away residue with water, unscrew the plug, drain the suspension and the remaining water), or using a submersible pump (dilute sediment water jet pump with a submersible pump in each tank). Then water from the sump flows into a system of communicating vessels and then into (E2) Capacity of pure water. Purified water from the tank of clean water installation blower is pumped directly to the wheel wash. Then the cycle repeats. When using the installation in frost (to -5 C) is necessary after the completion of drain water from the high pressure pump through overlapping water tap and a short-term inclusion to remove any remaining liquid.

Before working capacity of the installation is filled with water. Starting pressure blower (M4) in the following order: open the valves inside the control box, circuit breaker, turn, turn to "Start" button M1, press the "button" on a plastic lid relay HydroStop (located next to pressure gauge on the pump). Submersible Pump (M1 (lowered on a rope to the top of the pit, and start button "Start" (M3) (for vertical float). Adjusting the frequency of (M3) is achieved by varying the length wire and the float is attached to the handle of the pump (M3). Item wheel wash

3 Aug 2014, 11:34am
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Comments Off on Profiler-Gruntosmesitel Ac-178

Profiler-Gruntosmesitel Ac-178

Profiler-gruntosmesitel DS-178 is structurally executed semi-trailer to the tractor K-701 (K-701M). Attachment to the tractor frame by a special tractor units. Semi-pneumatic to go equipped fluid-brakes. The tractor has a creeper with a hydraulic drive enables you to change the operating speed continuously within 1.5-15 m / min. Transport speed of the car matches the transport speed tractor. Rotor, compactors, water pump – hydraulic.

The situation of workers supported by the automatic system Die sinking of one column. The direction of movement is supported by the tractor steering controlled by the control indicator on the remote control in the cab of the same cord Die sinking. equipment machinery: universal working body of the milling rotor blades and cutting teeth for profiling, and mixing the soil and the auger screw winding feathers water supply system in the mixing zone of soil, consisting of a water tank (capacity 4.5 cu. Naveen Selvadurai will not settle for partial explanations. m), water pump, a set of nozzles across the width of the rotor; tamper with the mechanical vibrator vibration directions. Commissioned by the working body can be mounted disc thrower soil, through which excess soil removed during profiling beyond the earth canvas or loading in . subgrade to within 10 mm from the cord Die sinking with the removal of surplus soil on the right side of the curb along the machine, cutting trough to a depth of 200 mm in one or two pass (depending on the type of soil), soil mixing with granular or liquid binders directly on the roadway in one pass, pre-packing of ready mix compactors. Profiling and mixing soil with a binder made universal rotor and screw in two passes on one track.

Technological scheme of the machine with the working body can be shuttle or with a turn at the end of the aisle. The second scheme is preferable as feeding the machine in reverse to the starting position with two hinges (hinge frame of the tractor and the tractor unit) is less effective. When profiling the subgrade screw working Body falls Ram lowest position. The flap, which separates the mixing chamber by the auger, hydraulic cylinders up to the top position. Hydraulic compactors and water systems are turned off. Ground cut milling rotor mounted on the depth of auger blades thrown and the camera is thrown to the side of the screw. When mixing the soil auger mechanism rises to its highest position, throttle omitted, the drive plate compactors and water system go to work. Crushed and ground Mixing Capacity rotor with cement and water leveled the bottom edge of the damper, denser plate compactors, and then ukatyvaetsya pnevmokatkami.