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Wedge Wire Screen
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Screen Basket for Screw Press Separator
- Screen Basket for Screw Press Separator
Screen Basket for Screw Press Separator
The stainless steel wedge wire screen basket, commonly known as the "V-wire screen," "press screen basket," or "screen cylinder," is a core component of screw press solid-liquid separators. It is installed inside the spiral press, enclosing the rotating screw shaft. The working principle is as follows: raw slurry with high moisture content is pushed into the screen basket by the screw shaft. Under the squeezing and conveying action of the spiral flights, the liquid (filtrate) is forced out through the precise, continuous slots of the screen basket, while the solid material (manure cake) is retained inside and continues to be compressed and dewatered as it moves forward. Finally, the dewatered solids are discharged from the outlet, achieving solid-liquid separation.
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Application (Manure Separator)
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Common sieve basket application
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wedge-shaped filament structure
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wedge-shaped filament structure
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Smooth inner wall
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Aerial view
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Three Spine Bars Screen Basket
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Three Spine Bars Screen Basket
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Three Spine Bars Screen Basket
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Three Spine Bars Screen Basket
Intermediate encryption
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Screen Basket with Flange
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Screen Basket with Flange
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Display image of sieve basket and auger
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Auger
Product Features and Advantages
Wedge Wire Structure:
The screen basket is manufactured by precision welding high-strength stainless steel wedge wires (with a trapezoidal or wedge-shaped cross-section) onto longitudinal support rods. This forms continuous, uniform “V”-shaped slots, characterized by being narrower on the inside and wider on the outside (or vice versa depending on process requirements). This structure is key to preventing clogging.
High-Precision Slots:
The slot width can be customized according to the characteristics of the material being processed (e.g., cow, pig, or chicken manure), with a common range of 0.1mm – 1.5mm. Uniform slot size ensures controlled solid particle size in the output and good clarity of the separated liquid.
High Strength and Wear Resistance:
Made from 304 or 316 stainless steel, it offers excellent corrosion resistance, withstanding long-term exposure to ammonia, salts, organic acids, and other substances present in manure. The robust welded construction provides sufficient rigidity to withstand the significant radial pressure from the screw shaft and long-term friction from the material, preventing deformation or breakage.
Optimized Fluid Dynamics Design:
The smooth wedge wire surface and continuous V-shaped slots allow filtrate to flow out quickly and smoothly, reducing internal retention and pressure loss. The screen basket is typically designed with reinforcement rings to resist the immense circumferential stress during the pressing process, ensuring structural integrity for long-term use.
Product Parameters
Material: 304 or 316 stainless steel.
Slot width: 0.1–1.5 mm
Dimensions: Customizable diameter and length to match equipment requirements.
Structural form: Typically cylindrical, or with flanges
Application Areas/Scenarios
1.Manure dewatering treatment on livestock and poultry farms.
2.Pre-treatment of feedstock in biogas projects.
3.Solid recovery in organic fertilizer production.
4.Sludge reduction in environmental protection applications.
Summary
The stainless steel wedge wire screen basket fundamentally enhances the efficiency and reliability of solid-liquid separation equipment through its unique anti-clogging wedge structure, exceptional corrosion and wear resistance, and high-strength design. It is not only a core technological component for achieving resource recovery and volume reduction of manure but also a key investment helping farmers reduce operational costs and improve environmental benefits. Choosing a high-quality wedge wire screen basket with the appropriate slot size is the foundation for ensuring the successful operation of the entire manure treatment system.
Frequently Asked Questions
Slot Recommendations and Key Application Points for Different Manure Types
| Type | Recommended
Slot Width (mm) |
Manure Characteristics Analysis | Application Points & Notes |
| Chicken/Poultry | 0.25 – 0.5
(Common: 0.3-0.4) |
High uric acid crystals, sticky, but fibers are short and fine. Relatively lower moisture content, but solids are fine. | Finer slots are preferred. High stickiness requires narrower slots to prevent fine particle loss. Demands high screen wear resistance and self-cleaning capability, paired with strong extrusion pressure. |
| Pigs | 0.5 – 0.8
(Common: 0.5-0.75) |
Manure varies significantly by growth stage. Finishing pig manure has moderate fiber content and some stickiness; sow manure is coarser. | The most common, typical range. Consider feed composition (e.g., bran content). Slots too narrow clog easily; too wide leads to poor separation. |
| Dairy Cows | 0.75 – 1.2
(Common: 0.8-1.0) |
Manure contains long, coarse, high-fiber content, low viscosity, easy to “bridge.” Often mixed with large amounts of bedding. | Wider slots can be chosen. Long fibers effectively form a filter layer even over wider slots. Wider slots ensure fast drainage, are less prone to clogging, and allow for high throughput. |
| Beef Cattle/Sheep | 0.8 – 1.5 | Similar to dairy cow manure, fibers are long and coarse, but consistency may vary slightly with feed. | Similar to dairy cows, prioritize flow and anti-clogging. If manure contains significant soil, consider the lower end of the range. |
| Ducks/Geese | 0.3 – 0.6 | Characteristics between chicken and pig manure. Contains undigested grains and short fibers, somewhat sticky, often mixed with feathers and grit. | Consider the abrasiveness of grit. Slots should not be too narrow to prevent clogging from a mix of grit and short fibers. |
| Horses | 1.0 – 2.0 or wider | Manure has very long, dry, loose fibers and high bedding content (sawdust, shavings). | Use the widest slots. The main goal is to separate large solids and long bedding. Sometimes pre-treatment with a screen is used first, followed by a press with wide slots for further dewatering. |
OUR PRODUCTS
Best-selling Products
Starch Screen
The Wedge Wire Starch Curved Screen is a curved screening device specifically designed for the starch industry. It features an arc-shaped screen surface made of precisely welded V-profile stainless steel wires, utilizing centrifugal force or gravity to achieve rapid dewatering and classification of starch slurry. Its curved structure prolongs slurry retention time, improving solid-liquid separation efficiency. It is suitable for starch extraction, refining, and byproduct recovery processes for starches such as potato, corn, and cassava. Characterized by efficient screening, wear and clogging resistance, and easy maintenance, this equipment is a key solid-liquid separation device in modern starch processing.
Rotary Drum
The Stainless Steel Wedge Wire Rotary Drum Screen (also known as a Rotary Drum Strainer or Micro-Screen) is a continuously and automatically operating front-end solid-liquid separation device. Its core component is a large cylindrical drum installed horizontally or at a slight incline. The entire circumferential surface of the drum is covered with a stainless steel wedge wire screen (Johnson screen). The wastewater to be treated flows into one end of the drum. Under gravity, the filtrate passes through the wedge wire slots, while solid suspended matter (such as fibers, hair, plastic pieces, and fine particles) is retained on the inner surface of the drum. As the drum rotates slowly, the retained debris is lifted to the top, where it is flushed by spray water into a collection trough, achieving a continuous process of automatic screening, filtration, and residue removal
Wedge Wire Vibrating Screen
A stainless steel wedge wire vibrating screen is a solid-liquid separation device featuring a screen surface made by precisely welding V-shaped stainless steel wires, integrated with a high-frequency vibration system. With uniform slots, wear resistance, and corrosion resistance, it is suitable for wet screening and dewatering operations. The vibration mechanism enables rapid material dispersion and efficient sieving while effectively preventing screen clogging. Widely used in industries such as mining, metallurgy, food processing, and environmental protection, it is particularly suitable for handling fine particles, high-viscosity, or easily agglomerated materials, offering advantages such as high screening accuracy, large processing capacity, and long service life.
Wedge Wire Water Well Screen
Johnson Deep Water Well Screens, also referred to as continuous slot screens or wire wrap screens, were originally developed to solve sand control challenges in fine-grained and uniform sand formations. These geological conditions are commonly encountered in deep groundwater aquifers, where conventional perforated pipes often suffer from clogging, excessive sand production, and reduced well efficiency.
Sintered Mesh Plate and Disc
Sintered Mesh Plates and Discs are high-precision filtration components fabricated by bonding multiple layers of stainless steel wire mesh through a specialized vacuum sintering process. Unlike traditional mesh that relies on mechanical weaving alone, these plates are fused at every contact point, transforming individual wires into a rigid, integrated porous metal sheet.
These plates can be customized into various shapes, most commonly circular discs, to fit specific industrial equipment. They offer an ideal balance of high permeability, extreme structural integrity, and precise filtration ratings. Because they are made entirely of metal (typically 304 or 316L), they provide a "permanent" filtration solution that can withstand high temperatures and corrosive chemicals while remaining fully cleanable and reusable.
Sintered Mesh Filter Cartidge
The Sintered Mesh Filter Cartridge is a high-performance, precision filtration component manufactured by bonding multiple layers of woven wire mesh (typically stainless steel 316L or 304) through a specialized vacuum sintering process. Unlike traditional fiber-based or single-layer mesh filters, this process creates a permanent molecular bond between every wire intersection, resulting in a porous metal structure with exceptional mechanical strength and structural integrity.
This cartridge is designed for demanding industrial environments where high pressure, extreme temperatures, and corrosive fluids are present. Its defining characteristic is the ability to provide precise, consistent filtration ratings while remaining fully cleanable and reusable, making it an eco-friendly and cost-effective alternative to disposable filter elements.
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