Jiangsu Haifa Machinery Manufacturing Co., Ltd.

Product Name: Feed Pump Specialized for Filter Press

I. Product Overview

This series of filter press specialized pumps, manufactured by Jiangsu Haifa Machinery Manufacturing Co., Ltd., is a self-developed and designed piece of equipment tailored to meet the specific demands of the solid-liquid separation process in filter presses. This product fully considers the complex requirements for flow and pressure during the initial feeding, squeezing, and pressure-holding stages of a filter press. Combined with our company's advanced fluid technology and precision manufacturing processes, it ensures stable operation of the entire machine.

II. Core Advantages and Features

1. Low Noise, Improving the Working Environment

• Low-Noise Design: Utilizes an optimized hydraulic model and precision dynamic balancing technology to significantly reduce noise generated by fluid flow and mechanical friction.

• Quiet Operation: Compared to traditional piston or diaphragm pumps, this pump maintains a low operating sound even under full load (measured noise value ≤ [85] dB(A)). This not only extends equipment life but also greatly improves the on-site working environment for operators.

2. Wide Adjustable Pressure Range, Strong Adaptability

• Wide Pressure Adjustment: By adjusting the pump outlet valve or using a VFD (Variable Frequency Drive), the output pressure can be steplessly adjusted from [0.2] MPa to [1.6] MPa (or higher, fill in actual value).

• Multi-purpose Use: Meets the requirement for high flow rate and rapid filling during the initial stage of filter press operation, while also easily achieving high-pressure squeezing in the later stage, eliminating the need to replace equipment.

3. Minimal Pressure Fluctuation, Low Filter Cake Moisture Content

• Stable Constant Pressure: The unique impeller structure and seal design ensure minimal output pressure pulsation during prolonged operation, with pressure fluctuation rate ≤ [5]%.

• Enhanced Performance: Stable pressure leads to a more uniform pressure distribution within the filter press chambers, effectively reducing filter cake moisture content, improving filtration efficiency, and reducing filter cloth wear.

4. Specialized for Filter Press, Adaptable to Harsh Operating Conditions

• Abrasion and Corrosion Resistant: Wet parts can be made of cast iron, stainless steel (304/316L), or duplex stainless steel, suitable for various acidic/alkaline materials and those with high solid content.

• Anti-Clogging Design: Features wide, unobstructed flow channels that resist clogging, capable of conveying suspensions with particle sizes ≤ [6] mm.

III. Working Principle

This pump uses a motor to drive the impeller at high speed, generating centrifugal force to draw in and pressurize the slurry. Matching the characteristics of the filter press, as the filter chambers gradually fill and resistance increases, the pump's flow automatically decreases while pressure automatically increases until the set squeezing pressure is reached, achieving automatic matching with the filtration process curve.

IV. Technical Parameters (Example)

Parameter	Value / Range
Applicable Media	Sludge, Ore Slurry, Chemical Slurry, Ceramic Slurry, etc.
Flow Range	[5] - [200] m³/h
Pressure Adjustment Range	[0.2] - [1.6] MPa
Noise Value	≤ [85] dB(A)
Pressure Fluctuation Rate	≤ [5]%
Motor Power	[11] - [132] kW (depends on diameter)
Inlet Diameter	[DN80] - [DN200]
Outlet Diameter	[DN65] - [DN150]

Note: The above parameters are based on specific models. Please contact our technical department for details.

V. Application Areas

• Environmental & Wastewater Treatment: Municipal sludge dewatering, industrial wastewater treatment supporting filter presses.

• Chemical Industry: Solid-liquid separation for pigments, dyes, titanium dioxide, fine chemicals.

• Mining & Metallurgy: Processing of mineral tailings, concentrates, coal washing, red mud (alumina).

• Food & Pharmaceutical: Filtration of fruit juices, alcoholic beverages, pharmaceutical intermediates.

• Ceramics & Building Materials: Filter press conveying of ceramic slurry, kaolin, calcium carbonate.

VI. Model Designation (Example)

HF-YL 100-40

• HF: Jiangsu Haifa Machinery Manufacturing Co., Ltd.

• YL: Filter Press Specialized Pump Series

• 100: Outlet Diameter (mm)

• 40: Head (m)

VII. Installation and Usage Precautions

1. Installation Base: The pump should be installed on a level, solid foundation, with vibration dampening pads added to further reduce noise.

2. Piping Connection: The inlet piping should be as short and straight as possible, avoiding sharp bends to prevent cavitation. A pressure gauge and safety valve (or return line) MUST be installed on the outlet side. Do not operate with the outlet valve fully closed for extended periods.

3. Pre-Start Check: The pump cavity MUST be filled with the medium (air purged). Do not run dry or allow dry friction.

4. Pressure Adjustment: To adjust pressure, use the outlet valve or VFD frequency adjustment. It is not recommended to operate continuously at extreme high pressures.

VIII. Maintenance and Care

• Regular Lubrication: Lubricate or replace the grease in the bearing housing every [1000] operating hours.

• Seal Inspection: Regularly check the mechanical seal for leaks. If dripping occurs, tighten or replace it promptly.

• Wear Part Replacement: Based on the abrasiveness of the conveyed medium, regularly inspect the wear condition of the impeller, liner, and casing, and replace them timely.

IX. Quality Assurance and After-Sales Service

• This product is manufactured strictly according to the ISO9001 quality management system.

• Warranty Period: [12] months from the date of successful commissioning or [18] months from the date of shipment (whichever comes first).

• Provides 7x24 hour technical consultation and emergency troubleshooting services.

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