Manual Overview

Operation Manual for Sieve Bend Screen

I. Equipment Overview

The Hydraulic Screen is a highly efficient solid-liquid separation equipment, widely used in fields such as wastewater treatment, aquaculture, and food processing. It serves as equipment for concentrating and dewatering fluid materials, and for dewatering and separating useful fibers and solids from wastewater. It utilizes the gravity of water flow and the filtering action of the screen mesh to separate suspended solids, impurities, and other solid particles from the water, achieving water purification or solid material recovery.

This equipment offers advantages such as low investment cost, no need for power transmission, no rotating or vibrating components, minimal maintenance, long-lasting screen mesh, less prone to damage, and easy cleaning. The filtering component is manufactured from welded stainless steel sieve plates with wedge-wire profiles, offering high mechanical strength, no deformation, no rupture. Irregular manual cleaning of the bar slots is required to prevent clogging. The equipment does not possess impact load resistance capability. The selected model's treatment capacity should be greater than the maximum flow rate. It can effectively reduce the load on subsequent treatment processes and improve the stability and economy of the overall production or treatment system.

II. Scope of Application & Typical Industries

(I) Scope of Application

Used in small-scale industrial wastewater treatment (e.g., papermaking, slaughtering, leather, sugar, brewing, food processing, textile, printing, petrochemical) to remove suspended solids, floating matter, sediment, and other solid substances.
Used in industries like papermaking, alcohol, starch, and food processing to recover useful materials such as fibers and residues.
Used for pre-treatment in small-scale water supply and drainage.
Used for pre-treatment of sludge or river dredging.
Suitable for various types and sizes of wastewater treatment projects.

(II) Typical Application Industries

Paper Mill Wastewater: Fiber recovery, solid removal.
Tannery Wastewater: Removal of hair, fur, grease, etc.
Slaughterhouse Wastewater: Removal of paunch content, hair, grease, feces, etc.
Municipal Sewage: Removal of hair, debris, etc.
Alcohol & Starch Plant Wastewater: Removal of plant fibers, husks, etc.
Pharmaceutical & Sugar Mill Wastewater: Removal of various residues, plant husks, etc.
Brewery & Malt Plant Wastewater: Removal of malt, bean hulls, etc.
Livestock & Poultry Farms: Removal of feathers, feces, etc.
Fish & Meat Processing Plants: Removal of viscera, scales, minced meat, grease, etc.
Other Industries: Pre-treatment for chemical fiber plants, textile mills, chemical plants, plastic processing plants, large machinery plants, hotels, residential complexes, etc.

III. Working Principle & Equipment Structure

(I) Working Principle

The main body of the Hydraulic Screen is an arc-shaped or flat filtering screen surface made of precision-welded wedge-wire stainless steel bars. The liquid to be treated is conveyed into the equipment tank, overflows downwards from the weir plate, and is evenly distributed onto the inclined screen surface. Due to the small, smooth surface gaps and larger backside gaps of the screen, drainage is smooth and less prone to blockage. Solid material is retained, filtered water flows out through the screen gaps, and simultaneously, driven by hydraulic force, solid material is pushed to the lower end of the screen for discharge, completing the solid-liquid separation process.

The screen plate's filtering angle can be adjusted based on different media and solid-liquid ratios. A spray cleaning system and/or screen surface vibration system can be added. For media with high solid content, the vibration system provides excellent filtering performance.

(II) Overall Structure

The Hydraulic Screen mainly consists of a feeding device, screen body (including screen frame, tank), screen mesh, discharge device, washing device, and support device (including frame, anchor bolts). These components work in coordination to ensure efficient and stable solid-liquid separation.

(III) Main Components & Functions

Feeding Device: Includes feed pipe and feed distributor, responsible for evenly and stably conveying the wastewater or mixture to be treated into the tank, ensuring even distribution across the screen surface, avoiding local overload affecting separation performance. The feed pipe is usually made of corrosion-resistant stainless steel. The feed distributor can be adjusted according to actual processing capacity.
Screen Body (incl. Screen Frame, Tank): The tank is the core component for liquid reception and overflow. The screen frame fixes the screen mesh. The whole structure is welded from high-strength steel plates, offering good rigidity and stability, capable of withstanding water flow impact and solid particle friction. The inclination angle of the screen body can be adjusted according to material characteristics and separation requirements, generally between 30°-45°.
Screen Mesh: The key component for solid-liquid separation, made of wedge-wire stainless steel sieve plates formed into arc-shaped or flat screen surfaces, possessing high strength, wear resistance, and corrosion resistance. The screen aperture should be selected based on the particle size of the solids to be separated, ranging from tens of microns to several millimeters. Regular inspection, cleaning, and replacement are necessary to ensure filtering performance.
Discharge Device: Divided into solid discharge outlet and liquid discharge outlet. The solid discharge outlet is located at the lower end of the screen body, connected to a collection chute, collecting the separated solid impurities. It can be coupled with equipment like screw conveyors or belt conveyors to transport solids to a designated location. The liquid discharge outlet is connected to the collection pipe at the bottom or side of the tank, discharging the filtered water or clear liquid to the next stage or for direct reuse.
Washing Device: Composed of wash water pipes and nozzles, installed above or on the side of the screen body. Periodic cleaning of the screen mesh during operation effectively removes clogged solid particles, prevents screen blinding, and ensures normal operation and separation efficiency. Wash water can be tap water or treated clean water; pressure and frequency can be manually adjusted based on actual conditions.
Support Device: Includes frame and anchor bolts, used to support the entire Hydraulic Screen equipment. The frame is welded from steel structures with strong load-bearing capacity; anchor bolts fix the equipment to the foundation, preventing shaking or displacement during operation.

IV. Main Technical Parameters

| Parameter Name | Specifications |
| -------------- | -------------- |
| Screen Plate Width | 400, 500, 600, 900, 1200, 1500, 2000 (Unit: mm) |
| Screen Slot Gap | 0.15, 0.3, 0.5, 0.75, 1, 1.5, 2, Customizable per customer requirements (Unit: mm) |
| Number of Screen Stages | 1 stage, 2 stages, 3 stages, or Arc type |

V. Installation & Adjustment

Equipment Transport & Lifting: The machine is transported as a whole after inspection and approval by the manufacturer. Lifting equipment is required on-site for installation and subsequent maintenance. During overall lifting, wire ropes should be fixed to suitable parts of the tank body to avoid damage.
Foundation Construction & Equipment Positioning: After completing foundation construction according to the installation foundation diagram, place the support frame on the foundation and perform secondary grouting. After installation, ensure the equipment's horizontal level deviation is ≤0.5mm/1000mm, and vertical level deviation is ≤1mm/1000mm to guarantee stable operation.
Post-Installation Check: Confirm the equipment is installed strictly according to the official drawings. Check that connections for the feed inlet, slurry outlet, water outlet, etc., are smooth, without blockage or leakage. Clean the screen plate surface to ensure no metal, stones, or other debris remain, which could damage the screen or affect separation during operation.

VI. Pre-Operation Preparation

(I) Equipment Check

Check if components like the screen body, screen frame, tank, feeding device, discharge device, and washing device are intact and undamaged, connections are secure, without looseness or leakage. Focus on checking the screen mesh for damage, deformation, or clogging; replace or clean promptly if problems are found.
Check the stability of the support frame, confirm anchor bolts are tightened to prevent equipment movement during operation.
Check that power equipment like pumps has intact appearance, correct and secure wiring, without electrical hazards like leakage or short circuits. Check if wash water pipes and nozzles are clear, undamaged, ensuring normal washing function.

(II) Material Preparation

Confirm the characteristics of the wastewater or mixture to be treated, including solid particle size distribution, concentration, pH value, temperature, etc. Select the appropriate screen aperture based on material characteristics to ensure separation standards are met.
Check if the feed pipeline is clear, remove blockages inside the pipeline, ensure smooth feeding. Check discharge pipelines and collection chutes, ensuring unobstructed paths for subsequent transport of solids and liquids.
Prepare wash water, ensure pressure and flow rate meet requirements. Test the washing device in advance, confirm nozzles provide even water distribution and stable pressure.

(III) Safety Preparation

Operators must be familiar with the equipment structure, working principle, operating methods, and safety precautions. They must be trained and qualified before starting work.
Clear obstacles around the equipment, ensure clear operating space; check if site industrial lighting is sufficient to ensure clear visibility.
Operators should wear labor protection equipment such as safety helmets, protective gloves, protective clothing, and anti-slip shoes to avoid personal injury.
Check if equipment safety protection devices (e.g., overload protection, leakage protection) are complete and effective, ensuring the equipment can stop promptly for protection in case of abnormality.

VII. Operating Procedure

(I) Startup Procedure

Start the pump of the washing device, open the wash water pipe valve, and perform a 1-2 minute pre-wash of the screen mesh to ensure the screen surface is clean and free of clogging debris. During washing, observe the nozzle water output; if clogging or uneven water output occurs, stop immediately for cleaning.
Slowly open the feed pipeline valve to convey the liquid to be treated into the tank. Manually observe the feed rate size, control the feed rate within the equipment's rated capacity by adjusting the valve opening, avoiding overloading the screen or reducing efficiency due to excessive or insufficient feed.
During equipment operation, the operator should continuously monitor the accumulation of solid particles on the screen surface and the liquid filtering condition through the inspection port. Simultaneously, check the wash water pressure. Based on the accumulation rate of impurities on the screen surface, manually set the washing frequency (generally every 10-30 minutes), each wash lasting 30 seconds - 1 minute, to prevent screen clogging.

(II) Operation Monitoring

Record equipment operating conditions every 30 minutes, including feed rate, solid discharge rate, liquid discharge rate, and wash water pressure, to facilitate analysis of equipment status and timely problem identification.
Observe the discharge condition at the solid outlet, check the moisture content of the solid particles. If the moisture content is too high, it may indicate screen clogging or untimely washing; stop immediately to clean the screen or increase washing frequency.
Observe the water quality at the liquid outlet, judge the solid particle content in the water visually or with simple testing tools. If the content is too high, it may indicate screen damage or excessive feed rate; stop to check the screen or adjust the feed rate.
Check the operating status of all components, focusing on whether there is leakage from the tank or pipelines, whether the pump runs smoothly and without abnormal noise. Address problems promptly by stopping the equipment.

(III) Shutdown Procedure

First, close the feed pipeline valve to stop feeding. Continue observing the screen surface. After the residual liquid is mostly filtered and solid impurities are pushed to the discharge outlet, proceed with subsequent steps.
Keep the washing device running for 3-5 minutes to thoroughly wash the screen mesh, ensuring all solid particles on the screen surface are flushed into the collection chute, preventing residual particles from drying and hardening, affecting next use. Manually assist in cleaning stubborn impurities on the screen surface during washing if necessary.
Turn off the pump and valve of the washing device, stop washing. Wait for the liquid on the tank and screen surface to drain completely, then cut off the power to pumps and other power equipment, completing the shutdown.
Clean debris around the equipment, check if all components are intact, record any abnormalities during operation, and arrange for subsequent repair or maintenance.

VIII. Maintenance

(I) Daily Maintenance

Cleaning Management: Clean equipment surface dust, dirt, and solid impurities in the collection chute daily, keeping the equipment and surrounding environment tidy to prevent impurity buildup affecting operation. After processing high-concentration materials, promptly clean the screen slots manually to prevent clogging and reduced filtering efficiency.
Component Check & Maintenance: Check if feed, discharge, and wash water pipelines are clear, remove residual impurities inside pipes, fix leaks at pipe connections. Focus on inspecting the screen mesh surface; if holes or breaks are found, repair promptly strive to repair; replace immediately if repair is impossible, to avoid discharge of unfiltered liquid. Check if wash nozzles provide even water output, disassemble and clean clogged nozzles to ensure washing performance.
Power Equipment Maintenance: Check the pump's appearance and wiring, tighten loose terminals, replace aging cables. Add lubricating oil as required by the pump manual, ensuring smooth operation without abnormal noise.

(II) Periodic Maintenance

Monthly Maintenance: Dismantle the screen mesh from the screen frame, flush impurities from the screen surface and slots using a high-pressure water gun. For stubborn stains, use specialized detergent for soaking before cleaning. After cleaning, carefully inspect the screen integrity. If holes or breaks are found, repair or replace promptly. During installation, ensure the screen is fixed securely to avoid vibration during operation.
Annual Maintenance: Completely disassemble the equipment, clean internal impurities from all components. Check the screen body inclination angle, calibrate it to the optimal filtering angle of 30°-45° based on actual usage. Replace aging seals, pipe connections, and other wearing parts. Check support frame welds for cracks, repair cracked areas by rewelding. Perform derusting treatment on corrosion-prone areas of metal parts like the tank and pipes, and apply anti-rust paint. Disassemble the pump, clean impurities and dirt from the impeller, check the wear degree of the impeller and seals, replace severely worn parts. Test the insulation performance of the pump motor, ensure insulation resistance meets safety standards, guarantee the overall equipment performance meets standards, and restore initial operating efficiency.

IX. Safety Precautions

Operators must strictly follow the operating procedures specified in this manual for starting, running, and shutting down the equipment. Unauthorized operation is prohibited, especially when adjusting feed rate or cleaning the screen; stop the equipment and cut off power first.
During equipment operation, strictly prohibit putting hands, feet, or any other body parts into the tank, screen frame, or other internal parts of the equipment. Strictly prohibit opening the inspection port cover plate to prevent personal injury from water flow or impurity impact.
Repair, maintenance, or component adjustment is prohibited during equipment operation. If necessary, the equipment must be stopped first and power to pumps and other power equipment must be cut off to ensure safety. Place a "Under Maintenance, Do Not Start" warning sign near the equipment during maintenance.
If the equipment experiences severe vibration, serious pipeline leakage, or abnormal pump noise, the operator should immediately stop the equipment, cut off the power, report to the responsible person, and only restart after troubleshooting. Operating with faults is strictly prohibited.
Regularly inspect equipment safety protection devices to ensure they are complete and effective. Unauthorized removal or damage of safety protection devices is strictly prohibited. Check wires and cables for aging or damage to avoid electric leakage accidents.
Keep the area around the equipment tidy, strictly prohibit storing flammable or explosive materials. Necessary fire-fighting equipment must be available on-site to prevent fire accidents. Pay attention to water splash during washing operations to avoid slipping on wet floors.
During equipment installation and lifting, strictly prohibit personnel from standing under the lifting area. Lifting equipment must be operated by professionals to avoid lifting accidents. Sufficient industrial lighting must be ensured on-site to guarantee clear visibility for operation and maintenance, preventing accidents caused by poor visibility.
Non-professionals are strictly prohibited from disassembling or repairing the equipment without authorization. Equipment repair must be performed by professionals to ensure quality and safety. When manually cleaning the screen slots, stop the equipment and cut off power first to avoid injury from sudden equipment startup.

This section provides comprehensive documentation for all products in the Sieve Bend Screen category. Please select a specific product below to view its detailed manual.

Available Products

SS316-1000-Vibrating Sieve Bend Screen

Model: JX-KDS-Z1000-SS316 Price: $4920

Sieve Bend Screen Manual

Table of Contents

Manual Overview

Operation Manual for Sieve Bend Screen

I. Equipment Overview

II. Scope of Application & Typical Industries

(I) Scope of Application

(II) Typical Application Industries

III. Working Principle & Equipment Structure

(I) Working Principle

(II) Overall Structure

(III) Main Components & Functions

IV. Main Technical Parameters

V. Installation & Adjustment

VI. Pre-Operation Preparation

(I) Equipment Check

(II) Material Preparation

(III) Safety Preparation

VII. Operating Procedure

(I) Startup Procedure

(II) Operation Monitoring

(III) Shutdown Procedure

VIII. Maintenance

(I) Daily Maintenance

(II) Periodic Maintenance

IX. Safety Precautions

Available Products

SS316-1000-Vibrating Sieve Bend Screen

SS304-1000-Vibrating Sieve Bend Screen

SS316-3000-Sieve Bend Screen

SS316-K1500-Conda Screen

SS304-1200-Pressing Sieve Bend Screen

SS316-1200-Pressing Sieve Bend Screen

SS316-1500-Pressing Sieve Bend Screen

SS316-700-Sieve Bend Screen

SS316-2000-Sieve Bend Screen

SS316-1500-Sieve Bend Screen

SS316-1200-Vibrating Sieve Bend Screen

SS316-1200-Sieve Bend Screen

SS316-1800-Sieve Bend Screen

SS316-800-Sieve Bend Screen

SS316-600-Vibrating Sieve Bend Screen

SS316-600-Sieve Bend Screen

SS316-400-Vibrating Sieve Bend Screen

SS316-400-Sieve Bend Screen

SS304-1800-Sieve Bend Screen

SS304-1500-Pressing Sieve Bend Screen

SS304-700-Sieve Bend Screen

SS304-400-Sieve Bend Screen

SS316-800-Vibrating Sieve Bend Screen

SS304-400-Vibrating Sieve Bend Screen

SS304-600-Vibrating Sieve Bend Screen

SS304-800-Vibrating Sieve Bend Screen

SS304-1500-Conda screen

SS304-1500-Sieve Bend Screen

SS304-800-Sieve Bend Screen

SS304-600-Sieve Bend Screen

SS304-2000-Sieve Bend Screen

SS304-1200-Vibrating Sieve Bend Screen

1000-304-Sieve Bend Screen

1000-316-Sieve Bend Screen

SS304-1200-Sieve Bend Screen

SS304-3000-Sieve Bend Screen

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