LUM Series Superfine Vertical Roller Grinding Mill
LUM Series Superfine Vertical Roller Grinding Mill

portable submersible suction dredge

  • index of underwater diving

    underwater diving can be described as all of the following: a human activity – intentional, purposive, conscious and subjectively meaningful sequence of actions. underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to order of a day at a time .

  • water eductor

    the bernoulli effect from the flow of pumped water causes suction at the mouth of the dredge. water and sediment are sucked from the excavation site and released from the far end of the tube. the tube can be made of any rigid material such as steel or plastic. the diameter of the tube depends on the power available from the pump and whether delicate work is required.

  • airlift pump

    an airlift pump is a pump that has low suction and moderate discharge of liquid and entrained solids. the pump injects compressed air at the bottom of the discharge pipe which is immersed in the liquid. the compressed air mixes with the liquid causing the air-water mixture to be less dense than the rest of the liquid around it and therefore is displaced upwards through the discharge pipe by the surrounding liquid of higher density. solids may be entrained in the flow and if small enough to fit t

  • hard suction hose

    flexible suction hose, not to be confused with hard suction hose in u.s., is a specific type of fire hose used in drafting operations, when a fire engine uses a vacuum to d water from a portable water tank, pool, or other static water source. it is built to withstand vacuum, rather than pressure, abrasion, and heat. conversely, hard suction is capable of withstanding up to 200 psig, as well as vacuum. in the united states, it is standard equipment according to the national fire protection ass

  • gas lift

    gas lift or bubble pumps use the artificial lift technique of raising a fluid such as water or oil by introducing bubbles of compressed air, water vapor or other vaporous bubbles into the outlet tube. this has the effect of reducing the hydrostatic pressure in the outlet tube vs. the hydrostatic pressure at the inlet side of the tube.. devices using this type of lift mechanism:

  • gold dredge

    a gold dredge is a placer mining machine that extracts gold from sand, gravel, and dirt using water and mechanical methods. the original gold dredges were large, multi-story machines built in the first half of the 1900s. small suction machines are currently marketed as 'gold dredges' to individuals seeking gold: just offshore from the beach of nome, alaska, for instance. a large gold dredge uses a mechanical method to excavate material using steel 'buckets' on a circular, continuous 'bucketline'

  • remotely operated underwater vehicle

    the seaperch remotely operated underwater vehicle rov educational program is an educational tool and kit that allows elementary, middle, and high-school students to construct a simple, remotely operated underwater vehicle, from polyvinyl chloride pvc pipe and other readily made materials.

  • anti-frogman techniques

    small dredging-type craft and small submarines are used for small-scale dredging and/or to recover submerged objects; but there is no known case in the real world of them being used to capture divers. the craft's capture device might be a net or a grab or an aimable suction tube or a scoop. net. a net can sometimes be used to catch submerged .

  • hopper barge

    a hopper barge is a kind of non-mechanical ship or vessel that cannot move around by itself, unlike some other types of barges, that is designed to carry materials, like rocks, sand, soil and rubbish, for dumping into the ocean, a river or lake for land reclamation.

  • hard suction hose

    flexible suction hose flex suction or suction hose , not to be confused with hard suction hose in u.s., is a specific type of fire hose used in drafting operations, when a fire engine uses a vacuum to d water from a portable water tank, pool, or other static water source.it is built to withstand vacuum, rather than pressure, abrasion, and heat. conversely, hard suction is capable of .

  • diving chamber

    a diving chamber is a vessel for human occupation, which may have an entrance that can be sealed to hold an internal pressure significantly higher than ambient pressure, a pressurised gas system to control the internal pressure, and a supply of breathing gas for the occupants.. there are two main functions for diving chambers: as a simple form of submersible vessel to transport divers .

  • suction excavator

    suction excavators eliminate the need for costly and time-consuming manual labour. buried pipe systems do not suffer damage. output is up to sixteen times of that achieved by conventional excavation. in the ese 32/7: the suction pipe's internal diameter is 25 cm 9.8 in

  • deme

    deme has a fleet of almost 300 vessels, among which over 80 main dredging and hydraulic engineering vessels. at the end of 2009 deme owned and operated 25 trailing suction hopper dredgers tshds such as the jade river with a capacity from 1,635 to 30,000 m 3.they include the 24,130 m 3 pearl river which was the first megatrailer in the world when she was commissioned in 1994.

  • outline of underwater diving

    what type of thing is underwater diving?. underwater diving can be described as all of the following: a human activity – intentional, purposive, conscious and subjectively meaningful sequence of actions. underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range .

  • solar-powered pump

    solar-powered pumps run on electricity generated by photovoltaic panels or the radiated thermal energy available from collected sunlight as opposed to grid electricity or diesel run water pumps. the operation of solar powered pumps is more economical mainly due to the lower operation and maintenance costs and has less environmental impact than pumps powered by an internal combustion engine ice .

  • deme

    deme has a fleet of almost 300 vessels, among which over 80 main dredging and hydraulic engineering vessels. at the end of 2009 deme owned and operated 25 trailing suction hopper dredgers tshds such as the jade river with a capacity from 1,635 to 30,000 m 3.

  • suction excavator

    a suction excavator produces powerful suction through a wide pipe which is up to 30 centimetres 1 ft or so in diameter. the suction inlet air speed may be up to 100 metres per second 220 mph . its construction is somewhat like a vacuum truck gully emptier but with a wider suction hose and a more powerful suction.