The reason why the filter press can thrive and is widely used in various industries, its greatest advantage is positive pressure, high pressure dehydration, pressure difference is much larger than the traditional vacuum filter, so the cake water is low, energy consumption With less metal loss, the filtrate is clear and transparent. As early as a decade ago, some experts pointed out that the filter press is the only equipment in the industry that can ensure that the water content of the filter cake is less than 10%, and it can be equipped with no flocculant.
Filter filter in terms of filter plate form, there are compartment type and plate and frame type; on the filter plate placed in a different direction, there are vertical and horizontal points; on the filter plate material is different, there are plastic, rubber, cast iron, Cast steel, carbon steel, stainless steel; whether the filter plate is equipped with rubber extrusion film, there are squeezed dehydration and no extrusion dewatering; on the filter plate configuration filter cloth surface number is different, there are single-sided dehydration and double-sided dehydration The points and so on. Regardless of the type of filter press, the principle of its operation is first of all, positive pressure and pressure dehydration, also known as dewatering, that is, a certain number of filter plates are tightly arranged in a row under the action of strong mechanical force, filter plate surface and filter plate surface. Between the formation of the filter chamber, the filter material is fed into the filter chamber under a strong positive pressure, and the solid part of the filter material entering the filter chamber is trapped by the filter medium (such as a filter cloth) to form a filter cake, and the liquid part is discharged through the filter medium. The filter chamber is used to achieve the purpose of solid-liquid separation. With the increase of positive pressure, the solid-liquid separation is more thorough, but in terms of energy and cost, an excessively high positive pressure is not worthwhile. After the pulp is dehydrated, a filter press equipped with a rubber squeeze film is used. The compression medium (such as air and water) enters the back of the film and pushes the film to further dehydrate the pressed cake, which is called extrusion dewatering. After dewatering or extrusion dehydration, the compressed air enters the side of the filter cake through the filter cake, carrying the liquid water from the other side of the filter cake through the filter cloth to discharge the dehydration, and is called dehydration by the wind. If both sides of the filter chamber are coated with a filter cloth, the liquid portion can evenly pass through the filter cloths on both sides of the filter chamber to discharge the filter chamber, thereby dehydrating both sides of the filter chamber. After the dehydration is completed, the mechanical pressing force of the filter plate is released, and the filter plate is gradually pulled open by the single block, and the filter chamber is opened separately to complete the unloading of the cake as a main work cycle. Depending on the nature of the filter material, the filter press can be set to slurry dewatering, extrusion dehydration, wind dehydration or single and double-sided dehydration, respectively, in order to minimize the cake moisture.
A dredge Ball Joint is a connection between two pipes that are used to transport a mixture of water and sand from a Dredger to the discharging area.Dredge ball joint components: Gland, ball, liner, case.Additional parts of a dredge ball joint: case liner, ball liner, gland liner.
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Dredge ball joint design
The inner diameter of dredge ball joint pipes ranges from 400 mm to 1200 mm. Dredge ball joint liners can be produced from steel and hard iron materials. To allow for variations of the tilting angle, the ball turning angle of a dredge ball joint is 15 degrees to 18 degrees, and the discharge pipe variation for a dredge ball joint ranges from 10 mm to 30 mm. The dredge ball joints are made to operate at low, medium and high pressure.
Dredge ball joint materials
Dredge ball joints can be made from Cast iron of a manganese, chromium, nickel and molybdenum alloy, ductile manganese iron, or hard chromium iron.
We supplies several in-house-designed and patented dredge ball joints with bayonet couplings. The dredge ball joints are typically available for a pressure rating in the range of 10 to 50 bar and for internal pipe-size diameters ranging from 350 to 1100mm.
Classic Ball Joint
The Classic dredge ball joint has proven its worth for over 30 years. It is known for its sturdiness, ease of connecting and simplicity. The design includes one replaceable wear liner in the case. The inside of the ball is protected by the dredge pipe, which runs through the ball.
Crossover Ball Joint
The patented Crossover dredge ball joint includes two replaceable wear liners which provide a streamlined and unrestricted flow area in any tilted position. The optimal flow conditions result in reduced flow resistance and major cost-savings in fuel and wear, which typically result in a very short return on investment.
Greenforce Ball Joint
The Greenforce dredge ball joint is designed for grease-free operation and a working pressure of 40 bar or more. Due to its double ball-design, the forces and weight are reduced considerably. Additionally, the bearing system is completely separated from the dredge flow, allowing installation of a modern grease-free bearing system.
Ball Joint
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