Sieve Bend Screen – An Ideal Solution for Precise Dewatering and Efficient Screening

Sieve bend screen, also known as bend screen or DSM screen, is manufactured by welding stainless steel V-shaped profile wires onto wedge wire support rods. It is ideally suited for classification and dewatering operations to remove solids from liquids, or for solid/solid separation in dry feed applications. In the coal washing industry, sieve bend screens are typically used as the primary dewatering device following heavy-medium cyclones, enabling rapid and effective removal of moisture from fine materials and enhancing the efficiency of subsequent screening and classification processes.

QIUSUO provides sieve bend screens with various bending angles, arc lengths, and mesh openings to meet diverse operational requirements.

Two sieve bend screen samples are displayed on artificial grass

Specifications

Table 1: Specification Parameters
Angles	45°				60°			120°
Radius(mm)	1018	1527	2036	1018		1527	2036	1018	1527	2036
Arc Length(mm)	800	1200	1600	1066		1600	2132	2132	3198	4264
Width(mm)	600 / 900 / 1000 / 1200 / 1500 / 1800 / 2000 / 2100 / 2200 / 2400 / 2700 / 3000 / customized
Slot Size(mm)	0.25–1 mm slot or customized
Support Rod Type	triangle wire, round rod, flat bar or square wire.
Support Rod Size(mm)	2 × 4.5 / 2 × 9.5 / customized
Profile Wire(mm)	0.5 × 1 / 0.75 × 1.3 / 1 × 2 /1.5 × 4 / 2 × 4 / 2.2 × 4.5 / 2.8 × 5 / 3 × 6 / 2.8 × 6.5 / 3.4 × 7.5

Table 2: Material Parameters
Grade	Stainless Steel Wire Chemical Composition (%)
Grade	C	Ni	Mn	Cr
304	≤ 0.08	8.0–10.5	≤ 2.0	18.0–20.0
321	≤ 0.08	9.0–12.0	≤ 2.0	17.0–19.0
316L	≤ 0.03	10.0–14.0	≤ 2.0	16.0–18.0

Wedge Wire & Support Rod Type

Rendered image of wedge wire screen structure

Wedge Wire Type

QS-V

QS-Q

QS-VD
Support Rod Type

QS-S-VD

QS-S-Q

QS-S-WD

QS-S-RD

Sieve Bend Dimensions

QIUSUO sieve bend screens are available in three standard arc lengths, and we can also provide customized sieve bend dimensions to meet your application requirements.

Sieve bend screen with 45° angle and 1018 mm radius drawing

800 mm Arc Length

Commonly used for media recovery
Ideally suited for areas with height restrictions

Sieve bend screen with 45° angle and 1527 mm radius drawing

1200 mm Arc Length

Used where maximum drainage is required, but the height does not allow 1600 mm developed length

Sieve bend screen with 45° angle and 2036 mm radius drawing

1600 mm Arc Length

For maximum drainage
Reduced effect of any feed error

Product display

QIUSUO can assist in design based on application needs and requirements, leveraging extensive experience and expertise to produce high-quality, multi-specification sieve bend screen products with fast delivery times.

Display of multiple finished sieve bend screens

Front view of finished sieve bend screens

Features

Non-clogging. The continuous slots formed by V-shaped profile wires ensure minimal contact between particles and the slot, effectively minimizing clogging.
High filtration accuracy. The opening gap is precisely controlled, making it suitable for applications requiring high screening precision.
Easy to clean. The screen can be easily cleaned by scraping or backwashing.
Durable structure. Each intersection of the profile wire and support rod is welded, resulting in a more robust structure.
Flexible application. A variety of sizes and slot configurations are available to accommodate different equipment structures and process requirements.

Applications

Sieve bend screens are widely used in the coal, chemical, and environmental protection industries. They are primarily employed for pre-dewatering, slurry handling, and desliming operations of moving materials in coal-fired power plants and mining facilities, as well as for classification and slurry recovery. They can also be used in combination with hydrocyclones for processing fine particle materials, enabling efficient classification, dewatering, slurry treatment, and desliming.

Screening equipment equipped with sieve bend screens for dewatering operations

Sieve bend screen installed on screening equipment

Large sieve bend screen installed on screening equipment