A filter press for sludge dewatering squeezes liquid out of slurry and leaves a firm solid cake behind. Because it works under steady pressure, it handles solid-liquid separation jobs that simple settling cannot finish. If you need a YG dewatering filter press that scales from a 15 m² jack-clamped unit to a 500 m² automatic machine, this article walks you through the working principle, key parameters, typical uses, and main advantages. Finally, it answers the questions buyers ask most often.

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How Does a Filter Press For Sludge Dewatering Work?

A filter press is a common piece of solid-liquid separation equipment. It uses filter cloth to trap solid particles inside a clamped filter chamber. A feed pump then adds pressure, and the liquid flows out through the discharge valve.

Inside the machine, slurry enters each chamber through the feed hole. Solid particles are larger than the pores in the cloth, so they stay in the chamber and build up as filter cake. The liquid passes through the cloth and leaves from the outlet. You can choose between two discharge styles. With open flow, each plate has its own outlet and tap, so the filtrate drains straight from every plate. With closed flow, the filtrate from all plates joins together and leaves the machine through one pipe.

A diaphragm filter press goes one step further. It replaces some ordinary plates with diaphragm plates and places them between the standard plates. After filtration, the system pumps water or air into the diaphragm plates. The plates swell, squeeze the cake, and lower its moisture content.

The machine has three main sections:

• Main frame: The thrust plate, pressing plate, clamping frame, and main beams form the base of the machine. During operation, the piston rod of the oil cylinder pushes the pressing plate against the filter plates and cloth, so the chamber stays sealed under pressure.
• Filtration section: Several filter plates (or frames) sit in order on the main beams, and a layer of filter cloth separates each pair.
• Clamping section: You can choose manual jack clamping or hydraulic clamping. A manual jack uses a small gear and a lever, and one person can operate it, so small test machines and workshop-style plants often use it. A hydraulic system uses a motor to drive an oil pump, and the oil moves through a control valve into the cylinder. Hydraulic control comes in two modes: automatic pressure holding and program-controlled plate pulling. When the machine is large, a PLC cabinet commands two side plate-pulling carts to pull the plates apart and discharge the cake.

YG supplies the following types:

• Frame filter press: This design uses hydraulic clamping only and has no automatic plate pulling.
• Chamber filter press: This family covers hydraulic automatic clamping, program-controlled automatic plate pulling, diaphragm squeezing, jack clamping, vehicle-mounted mobile units, and round high-pressure versions.

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Technical Parameters of YG Hot-Selling Automatic Models

YG filter presses for sludge dewatering use an electric contact pressure gauge to hold pressure automatically. This setup is easy to operate, runs steadily, and suits machines with a large filtration area. The table below lists our three best-selling models.

Model	XMZ100/1000-30U	XMZ250/1250-30U	XMZ500/1500-30U
Chamber Volume	1,500 L	3,750 L	7,500 L
Filtration Area	100 m²	250 m²	500 m²
Clamping Pressure	20 MPa	20 MPa	20 MPa
Filtration Pressure	0.6 MPa	0.6 MPa	0.6 MPa
Overall Weight	6,628 kg	14,288 kg	30,288 kg
Number of Movable Plates	57 pcs	91 pcs	123 pcs
Number of Chambers	58	92	124
Filter Plate Size	1000×1000×60 mm	1250×1250×65 mm	1500×1500×65 mm
Quantity of Filter Cloth	57+1 (cloth for head and tail plates)	91+1 (cloth for head and tail plates)	123+1 (cloth for head and tail plates)
Overall Dimension	5780×1500×1400 mm	8745×1850×1600 mm	11820×2100×1820 mm

Besides these three models, we offer many other configurations. The table below shows a few representative examples.

Type	Model	Filtration Area	Plate Size	Chamber Volume	Filtration Pressure	Motor Power
Program-controlled plate pulling	X△Z30/870-30U	30 m²	870×870 mm	460 L	0.6 MPa	2.2 kW
Program-controlled plate pulling	X△Z80/870-30U	80 m²	870×870 mm	1,210 L	0.6 MPa	2.2 kW
Diaphragm	XG80/870-300Bk	80 m²	870×870 mm	1,190 L	0.6 MPa	2.2 kW
Diaphragm	XGZY1500-X250	250 m²	1500×1500 mm	4,253 L	0.6 MPa	7.5 kW
Jack clamping	XQ15/450-30U	15 m²	450×450 mm	253 L	0.6 MPa	No power needed
Round high-pressure	X△20/Φ800-30	20 m²	Φ800 mm	247 L	1.0-2.0 MPa	Not listed

A model number does not tell the whole story. Therefore, share your slurry details with us, and our team will confirm the best match.

Our standard supporting equipment includes filter plates, an operating platform, a belt conveyor, a dosing and mixing tank, and liquid collecting flip plates. In addition, you can choose anti-corrosion treatment (full-machine plastic spraying, PP cladding, or stainless steel cladding) and fully automatic filter cloth washing.

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Applications of Filter Press For Sludge Dewatering in Sludge and Slurry Treatment

Any job that needs solids separated from liquid under pressure can use this equipment. A filter press for sludge dewatering, for example, turns wet sludge into a cake that you can handle and transport more easily. Furthermore, our range covers several working conditions:

• On-site mud treatment: Our vehicle-mounted, no-ground-contact slurry systems bring the filter press to the job site. The CZ-GMYZ100/1250-30U (100 m², 1,805 L) and CZ-GMYZ220/1250-30U (220 m², 3,800 L) are diaphragm models with a reference system power of 30 to 55 kW. The JDZCXMZ500/1500-30U chamber model offers 500 m² and 7,500 L, fits a 17.5 m flatbed trailer, and weighs 37 tons net.
• Small plants and workshops: Jack-clamped and mechanical models, such as the XQ15/450-30U and the X△J50/800-30U (50 m², 838 L, 3.0 kW), keep the setup simple.
• High-pressure filtration: Round-plate models, such as the X△20/Φ800-30, work at 1.0 to 2.0 MPa.
• Fine filtration support: Our multi-layer stainless steel filters, including the CR-200, CR-400, and F-400, filter down to 0.8 μm as auxiliary equipment.

Not sure whether your material suits a filter press? Send us the details, and we will advise you.

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Why Choose YG Sludge Filter Press?

• Automatic pressure holding: The electric contact pressure gauge keeps clamping pressure steady, so operation stays simple and stable. The three hot-selling models clamp at 20 MPa and filter at 0.6 MPa.
• Lower cake moisture: Diaphragm models squeeze the cake after filtration, which improves the separation effect.
• Less manual effort on large machines: A PLC cabinet controls the plate-pulling carts, so large machines unload with less hands-on work.
• Wide model range: You can pick from frame, chamber, diaphragm, jack-clamped, vehicle-mounted, and round high-pressure designs.
• Complete configuration: Platform, belt conveyor, dosing tank, automatic cloth washing, and anti-corrosion options come together as one package.
• Secure packing: We weld a steel skeleton, cover it with wooden boards, and ship each machine in one crate. This method protects against damage and lost parts during transport.

YG Dewatering Filter Press Price

Ready to find the right filter press for sludge dewatering for your project? Tell us your slurry type, daily volume, target cake moisture, and power supply. Our team will recommend a model, prepare a quotation, and answer your technical questions. Contact us today and take the first step toward easier, more efficient solid-liquid separation.

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