Jiangsu Du'an Environmental Protection QJB-W3/8 Sludge Recirculation Pump with Through-Wall Pipe Swing Gate
Motor: Full copper winding
Material: 304 Stainless Steel
Coupler Bar, Lift Frame, Hand-Crank Winch, Steel Wire Rope, Through-Wall Pipe, Swing Door
Jiangsu Du'an Environmental ProtectionQJB-W3/8Type DivingThe main components of the backflow sludge pump equipment, which are used for the manufacturing and installation of vertical sewage pumps, should meet the requirements for strength, rigidity, and lifespan.
Pump Housing: Cast Iron GG25G DIN1691、304Stainless steel or316Stainless Steel
Impeller: Cast Iron GG25G DIN1691、304Stainless steel or316Stainless Steel
Spindle: Stainless Steel ASTM431
Mechanical Seals
Inner seal: Corrosion-resistant sintered tungsten carbide/Corrosion-resistant sintered tungsten carbide
External Sealing: Corrosion-resistant Sintered Tungsten Carbide/Corrosion-resistant sintered tungsten carbide
O-Oval Ring: Nitrile rubberNBR70IRH
Wear Ring, Moving Ring: Stainless Steel AISI304
Bolts, nuts, washers: Stainless steel AISI304
Guides: Stainless Steel AISI304
Chain Guide: Stainless Steel AISI304The lifting chain should be adaptable to the design of the pump well, meet the lifting requirements, and be equipped with sufficient lifting chain.
Jiangsu Du'an Environmental Protection Mixed Liquid Recirculation Pump, Nitration Liquid Recirculation PumpProductDescription:
A、Nitrate Liquid RecyclePumpMixed-liquid Recirculation PumpDesign:
Jiangsu Du'an Environmental ProtectionQJB-WMixtureRecirculation pumps can handle wastewater and returned sludge. The pump can be raised or lowered vertically, facilitating easy movement, and no personnel need to enter the wet well for inspection or maintenance. The sliding rod bracket is one of the integral components of the pump.SubmersibleWaterBackflowThe entire weight of the pump is supported by a bracket, which must be able to withstand the thrust generated by the water pump. The pump, accessories, and cables are in20Water depth: no leakage or loss at 1 meter; capable of continuous submersion operation.
The submersible recirculation pump should be a complete set, including the main equipment, installation system, and lifting device. The installation system consists of square steel rods, top fasteners, and bottom connection flanges, allowing for free adjustment of the pump's lifting and lowering, and the pump can be disassembled and installed without emptying the pool. The recirculation pump is mounted on a sliding bracket that can move along the rod, serving as a single unit, and this bracket can bear the entire weight of the pump and all thrusts generated during operation. The side of the guide ring connected to the through-wall pipe is equipped with a flange and an auto-coupling socket. The connecting flange is welded to the through-wall pipe on the pool wall, including the auto-coupling device that serves as a connection when the pump automatically positions itself, as well as the socket for fixing the guide rail. The recirculation pump can slide freely between the top of the pool and the connecting flange under the guidance of the rail, and after lowering into position, it automatically secures to the through-wall pipe through the auto-coupling socket on the guide ring and the auto-coupling device on the connecting flange.
The seal between the flow guide and the connecting flange is a metal-to-metal connection, tightened by the pump's own weight. The entire recirculation pump, including the weight of the bracket, as well as the thrust and vibration generated during operation, is all supported by the through-wall pipe. No part of the recirculation pump or bracket comes into direct contact with or is placed on the pool bottom bracket.
The lifting unit is portable, mounted on the top fixed components of the guide rail system, equipped with a special lifting hook, lifting chain, and winch. The lifting unit is fitted with a two-way braking mechanism. Each recirculation pump is supplied with cable tensioning parts and cable clips to prevent cable damage caused by fluctuations in the agitated water flow.
Lifting arms with mounted brackets and hoisting devicesAISI304Stainless steel material. Lift chain in stainless steelAISI316Material. The foundation bolts are made of chemical bolts to ensure a firm and durable installation of the recirculation pump system. Submersible recirculation pumps are suitable for corrosive municipal wastewater environments. The recirculation pump can operate continuously under full immersion conditions. It is also capable of adapting to continuous and intermittent operation.(per hourPlease provide the Chinese content to be translated.Multiple startup attempts can be achieved20Next)Condition of operation after recovery from a long-term shutdown.
B、SubmersibleWaterBackflowPump Structure:
Submersible recirculation pumps are designed as a whole submersible unit with a sealed connection. All components of the recirculation pump, including the motor and gear box, can operate continuously underwater. The propeller of the recirculation pump is driven by a submersible motor through a gear reduction. The rotating head is streamlined and compact. The recirculation pump is connected to the wall penetration pipe flange with a guide vane. The main components of the recirculation pump that come into contact with the liquid, excluding the bracket and blades, are gray cast iron.DIN 1691 GG25The surface is smooth, free of sand holes, blow holes, or other defects. The shell thickness is sufficient to withstand water pressure and other loads. All nuts, bolts, and washers areAISI 316Stainless steel. Recirculation pumps have mechanical machining surfaces on critical contact surfaces requiring water-tight seals, utilizing metal-to-metal contact and employing nitrile rubber.OFormed ring. Recirculating pumps and their accessories, as well as cables, can all be continuously immersed inPlease provide the Chinese content that needs to be translated into American English.Large depth20The rice remains submerged without losing its watertight integrity.
All cast iron surfaces on the external side of the recirculating pump that come into contact with the liquid should be protected with a high-grade epoxy anti-corrosion coating system, thickness320μ。
CCooling System
The motor is adequately cooled by the surrounding mixing medium.
DCable entry seal
The motor is equipped with a submersible cable, which is a single cable for both control and power cores. The cable is fitted with a separate and reliable cable entry. The cable dimensions comply withIECStandard with sufficient length for connection to junction boxes or on-site control cabinets without splicing. Cable connections to the junction room are sealed with reusable double-track compression rubber sleeves, ensuring quick cable replacement. The cable outlet is axially aligned and tightly mounted in the same direction as the motor housing's outer surface, while cable clamps secure the cable to the tensioning component, preventing movement due to water impact and avoiding snagging during lifting.
Motors and cables are available inPlease provide the Chinese content to be translated.Large20Maintains its waterproof properties after continuous use in deep water.
EGearboxes and motors
The recirculation pump is driven by an efficient planetary gear box. The gear box body is integrated with the pump casing, forming a streamlined conical shape, with a smooth transition to the hub and motor housing, ensuring high stability and excellent hydraulic properties, thereby enhancing the overall efficiency of the recirculation pump. The gear box is equipped with high-precision, high-efficiency, and low-load single-pole planetary gears, with gear teeth made from high-wear-resistant alloy steel.
Direct connection of multi-pole motors to form a propeller speed design is not accepted.
The submersible motor is a three-phase squirrel-cage induction motor. The motor's protection rating isIEC IP68Grade, Insulation GradeFGrade155The rated power of the motor supplied with the submersible recirculation pump ensures that the pump will not overload during operation. Motor start-ups per hour20The motor shaft and rotor have passed dynamic and static balance tests. The motor is designed for use in...Please provide the Chinese content to be translated.High40℃(104F)Operate in environments, capable of immersion and continuous pumpingPricedHeight:40℃ of liquid, and the average temperature rise of the stator winding does not exceed80To monitor the temperature on each phase winding, a thermal switch is installed in each phase stator winding coil. The thermal switch is set to activate at a predetermined temperature.130°C, and connect to the control cabinet, interfacing with the control relay.
Motors and cables are both available for supply.Please provide the Chinese content to be translated into American English.Large20Maintains its waterproof properties even after continuous use in deep water (meets)IP68Protection Class). The submersible motor can be sufficiently cooled by the surrounding pumped medium, without the need for a cooling jacket or an external cooling system.
FBearings
The motor shaft of the submersible recirculation pump is supported by two ball bearings, while the propeller shaft is supported by two cone roller bearings. All bearings are of high-quality design.Long-termHigh-quality, lubricant-free bearings with high-fat content, capable of withstanding axial and radial loads. The design life of all bearingsPlease provide the Chinese content to be translated.Small for外贸供应 100,000 Hour(s).
GMechanical Seal
A mechanical seal and two radial sealing rings are installed between the recirculation pump gear box and hub. The radial sealing rings are mounted on bronze sleeve, providing additional protection for the mechanical seal and easy replacement. The shaft sealing system includes a sealing oil chamber, with the mechanical seal mounted and operating within it. A pair of radial sealing rings are also installed between the motor room and gear box. The mechanical seal is maintenance-free and can rotate clockwise or counterclockwise without affecting the sealing function. Made of silicon carbide, the mechanical seal has excellent mechanical strength and resistance to thermal shock. The pH range of the medium should be4-10Between.
Design life of the mechanical seal exceeds25,000Hour(s)
HPump shaft
The motor shaft and propeller shaft are connected through a gearbox. The shaft is made of wear-resistant stainless steel, and both the propeller shaft and motor shaft can withstand all axial and radial loads. The propeller shaft is sealed mechanically.OFormed rings and radial seals provide complete protection, fully isolating from the mixing medium, preventing corrosion; direct connection is not accepted.
IPropeller
The propeller is three-blade design, cast integrally with the hub, material isAISI316TiDesigned for treating conventional sewage. Features a self-cleaning design with non-entanglement and hydraulic balance. The propeller is equipped withGoodHydraulic performance. The propeller impeller is secured to the shaft end with a single-keyed bolt, sealed with a protective cap, and a locking washer system should be used.
JFlow Diverting Ring
The impeller blades surrounding the recirculation pump 360Equipped with a circular guide ring within a certain range. The side of the guide ring connecting to the through-wall pipe features a flange and a self-locking coupling. The material of the guide ring is stainless steel.AISI304。
KMotor Protection
All motor windings should be connected to and串联 with thermal switches. The thermal switches are in 130At °C, the motor stops rotating and an alarm is triggered.
The nitration liquid recirculation pump is equipped with a leak sensor to detect any leakage in the sealed oil cavity, preventing water from entering the motor and causing damage. The leak sensor is an electrode type sensor, whose signal can be monitored by a dedicated protective relay and an alarm signal will be triggered when water enters the motor.
Duwan Environmental QJB-W3/8 Nitration Liquid Recirculation Pump Special Protection Relay receives alarm signals from the leakage sensor, and outputs a fault trip contact to automatically cut off the motor power and stop the motor. The special protection relay for the recirculation pump is installed inside the local control box.，Its power requirements are:AC220
Duwan Environmental ProtectionQJB-WSludge Recirculation PumpAfter-sales Service Commitment:
1Responsible for providing free installation and debugging guidance for the equipment ordered by the customer until it operates normally.;
2Provide free training services on basic operation and daily maintenance at the installation site.;
3From the date of equipment acceptance, warranty service will be provided for the equipment of this project in accordance with the original manufacturer's warranty terms.;
4Free upgrade from standard factory warranty service to on-site warranty service;
5、Equipment Lifetime Maintenance and Service Plan RenewalOut-of-warranty equipment will incur parts replacement costs at cost price only, excluding labor fees.;
6Service response time:4-8HourMainlandUser48Arrive at the fault site within hours, other usersNext1 business day to arrive at the fault site;
