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Product Feature:
Corrosion resistance: The overcurrent components are made of stainless steel 304/316L, fluoroplastics (such as PVDF, PTFE) or polymer composite materials, and can withstand strong acid/alkali media with pH 2-14.
Anti clogging design: Open/closed impellers with a wide flow channel structure can accommodate up to 40% of the pump diameter with a maximum particle diameter (such as a DN50 pump that can accommodate 20mm particles).
Sealing reliability: Double end mechanical seal+auxiliary impeller power seal, leakage rate<0.01mL/h, service life ≥ 8000 hours.
Energy saving and efficient: The efficiency is improved by 15% -20% compared to ordinary sewage pumps, equipped with IE3/IE4 high-efficiency motors, and the comprehensive energy consumption is reduced by 30%.
The unique dual channel cutting hydraulic component design includes a cutting rotating blade installed on the water pump impeller and a fixed blade installed at the inlet. Both the rotating blade and the fixed blade are forged from hard alloy. Impurities in the conveyed medium are crushed before entering the impeller channel, such as gloves, plastic woven bags, and other debris, which can be instantly crushed and sucked out.
Application Scope：
① Enterprise wastewater discharge.
② Urban sewage treatment plant discharge system.
③ Subway, basement, civil air defense system drainage station.
④ Wastewater discharge from hotels and high-rise buildings.
⑤ Sewage drainage stations in residential areas.
⑥ Discharge of slurry in municipal engineering and construction sites.
⑦ The water supply system of a water plant.
⑧ Wastewater discharge from breeding farms and irrigation of rural farmland.
⑨ Exploration of mines and supporting water treatment equipment.
⑩ Instead of carrying people's shoulders, suck and transport river mud.
The usage conditions are that the water temperature is ≤ 60 ℃ and the liquid pH value is 4-10.
Structure and Material Design:
1. Pump body structure
Hydraulic components: Adopting a rear opening design, the impeller and seal can be maintained without disassembling the pipeline (see Figure 1).
2. Type of impeller
Closed impeller: suitable for low viscosity, low solid content media (≤ 5%), with an efficiency of up to 75%.
Semi open impeller: solid content ≤ 15%, self-cleaning design to prevent fiber entanglement.
Eddy current impeller: for high wear conditions, the throughput capacity is increased by 50%.
3. Shaft sealing system
Mechanical seal: SiC/SiC or tungsten carbide wear-resistant ring, temperature resistance -20 ℃~150 ℃.
Power seal: The back blade generates negative pressure to block medium leakage, suitable for media containing crystalline particles.
Material Selection Table
component | Optional materials | Applicable Medium | limiting temperature |
Pump body/impeller | 304 stainless steel | Weak acid and chloride ion wastewater | 120℃ |
316l stainless steel | Strong acids (such as sulfuric acid, hydrochloric acid) | 150℃ | |
Fluoroplastic lining (PTFE) | Concentrated acid, organic solvent | 100℃ | |
mechanical seal | silicon carbide | Medium containing hard particles | 250℃ |
axle | 2Cr13 hard chromium plating | High load operating conditions | 200℃ |
Working Principle:
The motor drives the impeller to rotate at high speed (1450-2900rpm), and centrifugal force throws the medium towards the pump casing, which is then pressurized by the volute and discharged. The gas-liquid separation chamber is designed to handle media with a gas content of ≤ 20% and prevent cavitation. The unique self cooling system cools the sealed chamber through the reflux hole, ensuring stable operation under high temperature conditions.
Example of Performance Curve (Taking AF50-32-160 as an Example)
Flow range: 10-30m ³/h
Head range: 15-35m
Power curve: Peak efficiency point of 22kW, allowing short-term overload of 10%.
NPSHr：≤3.5m， It is necessary to configure a perfusion installation or water intake tank.
Application Scenarios and Selection Guidelines
1.1 Typical Applications
Chemical industry: Transporting corrosive liquids such as sulfuric acid, hydrochloric acid, and sodium hydroxide (case: A chemical plant used a PTFE lined pump to transport waste acid with pH=1, which operated continuously for 2 years without corrosion).
Electroplating wastewater: Treat highly toxic wastewater containing cyanide and chromium ions, equipped with explosion-proof motors (Ex d IIB T4).
Municipal sewage: sewage lifting pump station, treating domestic sewage containing fiber and plastic impurities, equipped with cutting devices.
1.2 Five step selection method
Medium characteristics: pH value, density (kg/m ³), solid content, and particle size.
Flow/Head: Calculated based on the resistance of the pipeline network, with a reserved margin of 10% -15%.
Material matching: Refer to the corrosion rate table (e.g. 316L corrosion rate<0.1mm/year in hydrochloric acid at 60 ℃).
Installation method: Dry installation (IP55 protection) or submersible installation (IP68, maximum diving depth of 10m).
Compliance certification: Explosion proof certification (ATEX), Sanitary certification (FDA), etc.
Maintenance and troubleshooting
1.1 Daily maintenance
Weekly inspection items: vibration value (≤ 4.5mm/s), bearing temperature (≤ 75 ℃), leakage monitoring.
Annual inspection items: replace mechanical seals and check the wear of impellers (maximum allowable thinning of 2mm).
1.2 Common Fault Diagnosis
Fault phenomenon | Possible reasons | Solution |
Insufficient flow | Impeller blockage/wear | Clean or replace the impeller |
abnormal vibration | Shaft bending or bearing damage | Straighten the shaft/replace SKF bearings |
seal leakage | Crystallization or aging of sealing surface | Rinse the sealing chamber/replace the sealing component |
Similar Product
Product Feature:
Corrosion resistance: The overcurrent components are made of stainless steel 304/316L, fluoroplastics (such as PVDF, PTFE) or polymer composite materials, and can withstand strong acid/alkali media with pH 2-14.
Anti clogging design: Open/closed impellers with a wide flow channel structure can accommodate up to 40% of the pump diameter with a maximum particle diameter (such as a DN50 pump that can accommodate 20mm particles).
Sealing reliability: Double end mechanical seal+auxiliary impeller power seal, leakage rate<0.01mL/h, service life ≥ 8000 hours.
Energy saving and efficient: The efficiency is improved by 15% -20% compared to ordinary sewage pumps, equipped with IE3/IE4 high-efficiency motors, and the comprehensive energy consumption is reduced by 30%.
The unique dual channel cutting hydraulic component design includes a cutting rotating blade installed on the water pump impeller and a fixed blade installed at the inlet. Both the rotating blade and the fixed blade are forged from hard alloy. Impurities in the conveyed medium are crushed before entering the impeller channel, such as gloves, plastic woven bags, and other debris, which can be instantly crushed and sucked out.
Application Scope：
① Enterprise wastewater discharge.
② Urban sewage treatment plant discharge system.
③ Subway, basement, civil air defense system drainage station.
④ Wastewater discharge from hotels and high-rise buildings.
⑤ Sewage drainage stations in residential areas.
⑥ Discharge of slurry in municipal engineering and construction sites.
⑦ The water supply system of a water plant.
⑧ Wastewater discharge from breeding farms and irrigation of rural farmland.
⑨ Exploration of mines and supporting water treatment equipment.
⑩ Instead of carrying people's shoulders, suck and transport river mud.
The usage conditions are that the water temperature is ≤ 60 ℃ and the liquid pH value is 4-10.
Structure and Material Design:
1. Pump body structure
Hydraulic components: Adopting a rear opening design, the impeller and seal can be maintained without disassembling the pipeline (see Figure 1).
2. Type of impeller
Closed impeller: suitable for low viscosity, low solid content media (≤ 5%), with an efficiency of up to 75%.
Semi open impeller: solid content ≤ 15%, self-cleaning design to prevent fiber entanglement.
Eddy current impeller: for high wear conditions, the throughput capacity is increased by 50%.
3. Shaft sealing system
Mechanical seal: SiC/SiC or tungsten carbide wear-resistant ring, temperature resistance -20 ℃~150 ℃.
Power seal: The back blade generates negative pressure to block medium leakage, suitable for media containing crystalline particles.
Material Selection Table
component | Optional materials | Applicable Medium | limiting temperature |
Pump body/impeller | 304 stainless steel | Weak acid and chloride ion wastewater | 120℃ |
316l stainless steel | Strong acids (such as sulfuric acid, hydrochloric acid) | 150℃ | |
Fluoroplastic lining (PTFE) | Concentrated acid, organic solvent | 100℃ | |
mechanical seal | silicon carbide | Medium containing hard particles | 250℃ |
axle | 2Cr13 hard chromium plating | High load operating conditions | 200℃ |
Working Principle:
The motor drives the impeller to rotate at high speed (1450-2900rpm), and centrifugal force throws the medium towards the pump casing, which is then pressurized by the volute and discharged. The gas-liquid separation chamber is designed to handle media with a gas content of ≤ 20% and prevent cavitation. The unique self cooling system cools the sealed chamber through the reflux hole, ensuring stable operation under high temperature conditions.
Example of Performance Curve (Taking AF50-32-160 as an Example)
Flow range: 10-30m ³/h
Head range: 15-35m
Power curve: Peak efficiency point of 22kW, allowing short-term overload of 10%.
NPSHr：≤3.5m， It is necessary to configure a perfusion installation or water intake tank.
Application Scenarios and Selection Guidelines
1.1 Typical Applications
Chemical industry: Transporting corrosive liquids such as sulfuric acid, hydrochloric acid, and sodium hydroxide (case: A chemical plant used a PTFE lined pump to transport waste acid with pH=1, which operated continuously for 2 years without corrosion).
Electroplating wastewater: Treat highly toxic wastewater containing cyanide and chromium ions, equipped with explosion-proof motors (Ex d IIB T4).
Municipal sewage: sewage lifting pump station, treating domestic sewage containing fiber and plastic impurities, equipped with cutting devices.
1.2 Five step selection method
Medium characteristics: pH value, density (kg/m ³), solid content, and particle size.
Flow/Head: Calculated based on the resistance of the pipeline network, with a reserved margin of 10% -15%.
Material matching: Refer to the corrosion rate table (e.g. 316L corrosion rate<0.1mm/year in hydrochloric acid at 60 ℃).
Installation method: Dry installation (IP55 protection) or submersible installation (IP68, maximum diving depth of 10m).
Compliance certification: Explosion proof certification (ATEX), Sanitary certification (FDA), etc.
Maintenance and troubleshooting
1.1 Daily maintenance
Weekly inspection items: vibration value (≤ 4.5mm/s), bearing temperature (≤ 75 ℃), leakage monitoring.
Annual inspection items: replace mechanical seals and check the wear of impellers (maximum allowable thinning of 2mm).
1.2 Common Fault Diagnosis
Fault phenomenon | Possible reasons | Solution |
Insufficient flow | Impeller blockage/wear | Clean or replace the impeller |
abnormal vibration | Shaft bending or bearing damage | Straighten the shaft/replace SKF bearings |
seal leakage | Crystallization or aging of sealing surface | Rinse the sealing chamber/replace the sealing component |
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