Name: Screen-Type Sand Filter
SKU: 0

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Screen-Type Sand Filter

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Screen-Type Sand Filter Introduction
The screen-type sand filter is a high-efficiency water purification device designed for advanced water treatment in irrigation, industrial, and municipal systems. Its core features include:
Three-dimensional deep-bed filtration technology, which uses homogeneous quartz sand media to intercept suspended solids, organic matter, algae, and colloidal impurities.
Adjustable filtration accuracy (typically 0.4–1.2mm) based on sand particle size.
Automatic backwashing capability, enabling continuous water supply without interruption.
Durable construction: Corrosion-resistant metal or stainless-steel tanks with pressure resistance up to 1.0MPa, suitable for long-term outdoor use.
Its primary role is to purify water sources with high organic content (e.g., rivers, lakes, recycled water), serving as a pretreatment unit for irrigation systems and industrial water processes. By combining with screen or disc filters, it enhances downstream filtration efficiency, ensuring stable operation of drip/spray irrigation systems. This filter is widely applied in agriculture, industry, and domestic water pretreatment to improve water quality and prevent system clogging.
Key technical terms:
Screen-type: Refers to the mesh-like filtration structure.
Backwashing: Automatic cleaning mechanism to remove trapped impurities.
Filtration accuracy: Particle size retention capability.
Pressure resistance: Maximum operational pressure tolerance.

* Price upon request

PRODUCT DESCRIPTION

Screen-Type Sand Filter User Guide & Applications

1. Installation Instructions

Base Requirements: Install vertically on a flat surface with ≥1.5m maintenance space.
Pipeline Connection:
- Inlet/outlet diameter ≥ device interface, with manual valves.
- Separate drain pipe without valves.
- Parallel configuration requires balancing valves (recommended for flow >50m³/h).
Filter Media Loading:
- Quartz sand particle size 0.4–1.2mm, filling height 500mm.
- Avoid damaging the internal anti-corrosion coating.

2. Operation Procedure

Startup Preparation:
- Water pressure 0.25–0.4MPa, flow matching device specifications (refer to parameter table).
- Initial operation requires 2–3 cycles of backwash → forward wash until drainage is clear.
Daily Operation:
- Trigger backwashing after 2–3 days of continuous operation or when pressure difference >0.06MPa.
- Backwash Steps: Open backwash valve to 1/5 opening → observe full pipe flow → fully open → switch to forward wash after 15–25 minutes → continue until drainage is clear.

3. Maintenance

Media Replacement: Replace quartz sand every 3–5 years or when pressure difference >0.15MPa.
Freeze Protection: Drain the tank and remove media in winter to prevent freezing.
Long-Term Shutdown: Clean and store dry, inspect seals regularly.

Core Applications & Scenarios

1. Agricultural Irrigation

Water Sources: Rivers, lakes, canal water (organic matter >10mg/L).
Functions:
- Traps sediment, algae, and colloids to protect drip/spray irrigation nozzles.
- Often combined with screen/disc filters to extend downstream filter life.
Case Studies: Xinjiang cotton fields, Yunnan tea plantations, Dutch greenhouses.

2. Industrial Water Treatment

Industries: Steel plant recirculation, power plant cooling water, paper mill pretreatment.
Advantages:
- High pressure resistance (1.0MPa) for continuous operation.
- Corrosion-resistant metal/stainless steel tanks with >10-year lifespan.

3. Municipal & Environmental

Applications:
- Landscape water purification, rainwater recycling, reclaimed water pretreatment.
- Combines with activated carbon filters for color/odor removal.

Technical Parameter Comparison Table

Model	Port Size	Flow Range	Working Pressure	Material	Backwash Cycle
LJ-50SS	2"	5–17m³/h	0.25–0.4MPa	Carbon Steel/Stainless Steel	2–3 days
LJ-100SS	4"	30–70m³/h	0.25–0.4MPa	Stainless Steel	2–3 days
LJ-200SSA	8"	120–320m³/h	0.25–0.4MPa	Stainless Steel	2–3 days

Product Selling Points

High-Efficiency Filtration: Deep-bed sand + dual-layer tank design, impurity interception rate >98%.
Intelligent Backwash: Pressure/time dual control, supports uninterrupted water supply.
Durability: Automotive-grade paint finish, outdoor-resistant, corrosion rating IP65.
Flexible Configuration: Single/multi-unit parallel options for 5–320m³/h flow.

Webpage Layout Tips:

Visual Focus: Hero image + core parameters + application icons (agriculture/industry/municipal).
Interactive Tools: Add a "Calculate Your Model" button to guide users to input flow/water quality data.
Trust Elements: Display ISO, CE certifications, and customer testimonials (e.g., Israeli agricultural projects).

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