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Filter Press

Diaphragm Filter Press

The diaphragm filter press, with its unique diaphragm squeezing function, is a highly efficient and advanced solid-liquid separation device. It achieves drier, faster, and more energy-efficient filtration, making it an indispensable high-end solid-liquid separation solution in modern industry.

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Product Introduction

The diaphragm filter press, with its unique diaphragm squeezing function, is a highly efficient and advanced solid-liquid separation device. It achieves drier, faster, and more energy-efficient filtration, making it an indispensable high-end solid-liquid separation solution in modern industry.

Key Features and Advantages

Lower Moisture Content

The powerful diaphragm squeeze produces filter cakes with much lower moisture than conventional filter presses (typically 15%-30%), significantly reducing downstream drying or processing costs.

Higher Filtration Efficiency

The squeezing process shortens filtration time, accelerating the process and increasing throughput.

Improved Washing Performance

The uniform structure of the squeezed cake allows washing liquid to pass evenly, resulting in higher washing efficiency and lower liquid consumption.

Energy Savings

Although an extra squeezing step is added, the overall cycle time is shorter and achieves drier cakes, leading to lower total energy consumption.

Flexible Operation

By adjusting feed pressure, squeezing pressure, and squeeze duration, the press can accommodate different material characteristics for optimal filtration performance.

Main Applications

Photovoltaic New Energy Industry

In the purification of photovoltaic materials (such as silicon, quartz sand) and the recovery of cutting fluid, a large amount of wastewater containing fine particulate matter will be produced.
Zhonghao filter press can efficiently achieve solid-liquid separation, recover valuable metal powder and cutting fluid, and the moisture content of the filter cake is low, which is convenient for resource utilization.

Petrochemical Industry

In the petrochemical production process, sludge with complex components containing oil and catalysts will be produced.
Zhonghao filter press adopts special filter cloth and optimized structure, which is corrosion-resistant and has good sealing.
It can efficiently treat such sludge, the filtrate is clear, and the separation is accurate to meet the requirements of environmental protection and discharge.

Food Medicine Industry

In food processing (such as starch, juice, yeast) and pharmaceutical (antibiotics, traditional Chinese medicine extraction, fermentation liquid) processes, there are a large number of links that require precise solid-liquid separation.
Zhonghao filter presses use materials and designs that meet food hygiene standards to ensure quality and safety, efficiently separate and recycle valuable intermediate products or by-products, and ensure the safety and quality of the final product.

Municipal Sewage Industry

Dehydration is a key part of the biochemical sludge produced by municipal sewage treatment plants.
Zhonghao filter press equipment has a high degree of automation and stable operation. It can continuously press the flowing sludge into dry and hard mud cakes, greatly reducing the volume and weight of the sludge, creating favorable conditions for subsequent incineration, composting or landfill disposal, and effectively reducing municipal operating costs.

Tailings Mine Industry

Facing the mud treatment problems caused by tailings, sand washing, etc., Zhonghao filter press has demonstrated excellent dehydration performance.
It can compress ore slurry with extremely high moisture content into a sturdy, low moisture content filter cake, reducing the risk of environmental pollution.

Aquaculture Wastewater Industry

Aquaculture wastewater is rich in nitrogen, phosphorus and organic matter, and direct discharge is extremely harmful.
The Zhonghao filter press function quickly separates the suspended solids and manurefrom the wastewater to form dry manure residue.
These manure residues are high-quality raw materials for making organic fertilizers, which realize the resource utilization of waste.

Stages of Operation

01.

Feeding and Filtration Stage

Material enters the filter chambers, and initial solid-liquid separation occurs through the filter cloth.

02.

Diaphragm Squeezing Stage

The diaphragm applies strong pressure to the filter cake, further reducing its moisture content.

03.

Air Blowing / Drying Stage

Air or gas is blown through the filter cake to remove residual water, further improving dryness.

04.

Cake Discharge Stage

The dry filter cake is removed from the plates for subsequent handling or processing.

Automation options

Customers can independently select and configure corresponding automation options based on their actual business scenarios to optimize the operational efficiency of automated business processes.

PLC control System

Automatic Plate Shifting

Belt Conveyor System

Automatic Washing System

Automatic Filter Cake Removing System

Liquid Collection Flap System

Automatic belt conveyor system

Automatic drip tray

Automatic plate shifer system

Automatic vibration system

Automatic washing system

Parameter Information

XAMZG/-U Plate Diaphragm Filter Press
Model	Filtration Area	Filter Plates Size	Filter Cake Thickness	Chamber Volume	Filter Plates	Diaphragm Plates	Filtration Pressure	Motor Power	Machine weight	Dimensions	Foundation Dimensions (mm)
	㎡	mm	mm	L	pcs	pcs	Mpa	Kw	KG	LWH (mm)	L	B	D	H
XG250/1600-40U	250	1600 × 1600	40	2487	27	28	0.6	7.5	20443	7810x2450x2000	6310	1220	1900	1200
XG300/1600-40U	300			3019	33	34			22425	8776x2450x2000	7276
XG350/1600-40U	350			3552	39	40			24406	9742x2450x2000	8242
XG400/1600-40U	400			3996	44	45			26058	10547x2450x2000	9047
XG450/1600-40U	450			4529	50	51			28039	11513x2450x2000	10013
XG500/1600-40U	500			4973	55	56			29691	12318x2450x2000	10818
XG600/1600-40U	600			6039	67	68			33654	14250x2450x2000	12750
XG350/1500-2000-40U	350	1500 × 2000	40	7146	33	34	0.6	7.5	33403	9850x2350x2400	8100	1120	1800	1400
XG4001500-2000-40U	400			7986	37	38			35077	10530×2350×2400	8780
XG450/1500-2000-40U	450			9037	42	43			37169	11380×2350×2400	9630
XG500/1500-2000-40U	500			10088	47	48			39261	12230x2350x2400	10480
XG550′1500-2000-40U	550			10929	51	52			40934	12910x2350x2400	11160
XG600/1500-2000-40U	600			11980	56	57			43026	13760x2350x2400	12010
XG650/1500-2000-40U	650			13030	61	62			45118	14610×2350×2400	12860
XG700/1500-2000-40U	700			14081	66	67			47210	15460x2350x2400	13710

Frequently Asked Questions

Our popular products include: vehicle-mounted sludge solidification units, diaphragm filter presses, sludge dewatering machines, as well as engineering design and installation services for municipal sludge and sand-washing sludge treatment.

How to choose the right filter press model based on material properties?

Selecting a filter press model depends on key material properties: particle size (to determine filter cloth mesh), viscosity (affects required pressure), corrosiveness (dictates filter plate material, e.g., PP for mild corrosion, stainless steel for strong), and solid content (influences filtration area and cycle time). High-solids materials need larger filtration areas, while abrasive materials require wear-resistant plates. Match pressure ratings to material viscosity—thicker slurries need higher pressure (1.0–2.5 MPa) for effective dewatering.

What to do if filter plates leak?

First, stop operation and check:

Filter cloths: Replace damaged or misaligned cloths that disrupt sealing.
Filter plate seals: Inspect for cracks, wear, or debris; clean seals or replace plates if damaged.
Pressure imbalance: Ensure uniform pressure across plates (adjust hydraulic system if uneven).
Plate alignment: Realign plates if shifted during operation. Test with low pressure after fixes to confirm leaks are resolved.

Do filter cloths need regular replacement? How often?

Yes, filter cloths require regular replacement as they clog, tear, or degrade over time, reducing filtration efficiency. Frequency depends on material: 4–8 weeks for abrasive/viscous materials (e.g., mining slurries); 3–6 months for less harsh materials (e.g., food-grade liquids). Signs to replace early: slower filtration, increased pressure, or visible damage (holes, fraying).

Is installation and operation training provided after purchase?

We offer installation and operation training post-purchase. This typically includes on-site installation guidance, hands-on operation training (e.g., setting parameters, troubleshooting), and documentation (manuals, video tutorials). Some provide follow-up support for 1–3 months to ensure operators master key functions, especially for automated or custom models.

If the power supply is not the issue, how to fix the machine tripping and shutting down?

Check these common causes:

Overload: Motor may be overworked (e.g., excessive slurry feed); reduce load or inspect for jammed components (e.g., filter plate movement).
Faulty sensors: Pressure or temperature sensors may trigger safety shutdowns; calibrate or replace malfunctioning sensors.
Hydraulic system issues: Low oil level or clogged filters can cause pressure spikes; check fluid levels and clean/replace filters.
Electrical connections: Loose wires in control panels may interrupt power; tighten connections and inspect for short circuits.