Low Speed Flow Generator Qjb4

It overcomes the defects of similar products on the market and eliminates the faults of similar products on the market
1. It solves the technical problem of short service life and frequent maintenance and replacement;
2. It solves the technical problem of high noise and vibration during operation;
3. It solves the technical problem of unreliable sealing due to debris entangled in the mechanical seal in the sewage;
4. It solves the technical problem of large size, heavy weight, long axial length and easy damage of the transmission parts of the reduction transmission mechanism;
5. It solves the technical problem of inflexible lifting and easy jamming of the lifting device;
6. It solves the technical problem of the underwater mounting seat and the concrete foundation being not firmly fixed and easy to loosen, causing difficulties in underwater maintenance;
7. It solves the technical problem of the underwater coupling seat being able to automatically fix and clamp the equipment;
8. It solves a series of technical problems such as impeller balance, corrosion protection, geometric error, and force balance;
9. It solves the technical problem of water leakage at the cable inlet seal due to pulling;
10. It solves the technical problem of water installation required for the reconstruction and expansion of the sewage treatment plant.

Defects have always existed, no improvement has been seen, and the failure rate remains high and difficult to eliminate

Similar products on the market have always had problems such as short service life, easy damage to the reduction mechanism, unstable operation, loud noise and vibration, dynamic seal failure and water leakage, stuck in up and down sliding, inflexible, poor flow effect, high energy consumption, etc., troublesome maintenance and high maintenance cost.

1. FRP impeller, high-strength composite material, integral molding, strong corrosion resistance, low water resistance, light weight, high efficiency, good geometric center symmetry, high dynamic balance;
2. Micro submersible transmission box, compact structure, stable transmission, small size, light weight, high efficiency, few failures, long life;
3. Built-in cavity oil lubrication dynamic sealing system, reliable sealing, not affected by dirt in sewage;
4. Base-type load-bearing method, the equipment gravity is borne by the base, the operation is stable, and the shaking and vibration caused by the traditional guide rod load-bearing method are avoided;
5. Bed-type V-cone vibration absorption coupling seat, V-cone structure, can realize automatic centering and positioning, automatic fixing and clamping of the equipment; vibration damping pads are set on the side to absorb vibration and naturally adjust the positioning state of the equipment; the overall bed-type layout is like a baby lying in a cradle, stable;
6. The guide rail base support structure is both a lifting guide mechanism and a vibration absorption coupling seat bearing Force support, stable lifting and sliding, simple and reliable support force, strong ability to resist impact load caused by lateral eccentricity;
7. Cable is equipped with anti-pull protection device, which consists of two parts, one is the auxiliary protection mechanism at the underwater inlet seal to protect the inlet seal from being damaged by pulling; the other is the water cable anti-fall mechanism to protect the cable from falling and being entangled by the impeller;
8. Combined anti-stuck sliding mechanism, sleeve positioning double-bearing dustproof pulley is designed on the lifting mechanism to ensure that the pulley itself rotates flexibly and there is no friction between the wheel rim and the two-sided support parts; a moderate mobile pulley group is designed on the tail of the equipment to prevent it from self-locking with the guide rail and ensure smooth sliding;
9. Truss-type water installation device is developed and researched in response to market user requirements, and the equipment is directly fixed and installed on the water;
10. Help users to scientifically select and configure reasonable power;
11. General configuration and excellent configuration are suitable for user needs.

The MA3/8-400/3-740/S submersible flow generator consists of blades, reducers, main shafts, supports and other components. The blades and main shafts can be made of stainless steel according to the actual needs of the project. It is mainly used in mixing, stirring and circulation in the process of municipal and industrial sewage treatment. It can also be used as a flow-pushing device for landscape water circulation. Through stirring, it can create a water flow effect and prevent the sedimentation of suspended matter. Although each device is carefully inspected before leaving the factory, lubricated bearings can make the equipment have great durability, but in order to make the equipment have a longer service life.

please perform regular inspections and maintenance:

1. The cable should be inspected irregularly according to the working conditions and medium conditions, paying special attention to the upper and lower waterlines. If external damage is found, please replace it;

2. Check the motor insulation and the external fastening screws of the equipment at least once a year. If the insulation resistance of the motor winding to the ground is less than 5 megohms;

3. Replace the lubricating oil. The equipment has been injected with an appropriate amount of lubricating oil before leaving the factory, and it should be replaced after 3 months of initial operation. When replacing, lift the equipment out of the water, with the oil plug of the oil chamber facing downward, loosen the screw plug, release the lubricating oil, and then clean the oil chamber with washing oil, drain the cleaning oil, inject an appropriate amount of lubricating oil, replace a new o-ring, and tighten the screw plug.
Note: If the released oil is in the form of emulsified liquid, it means that the oil contains water. Check again three weeks after the oil change. If it is still in the form of emulsified liquid, check the mechanical seal. If necessary, replace the mechanical seal in time. After the mechanical seal is replaced, the oil chamber must be tested for routine maintenance. The lubricating oil should be replaced every six months. The lubricating oil is 32# mechanical oil or transformer oil, and the cleaning oil can be gasoline or kerosene.

4. When the equipment is not used for a long time, it should be cleaned and hoisted in a dry and ventilated place. If placed in water, it should be operated for at least 4 hours every 15 days;
5. After the equipment fails, please follow the troubleshooting method prompted to eliminate it. If it still cannot be eliminated, do not dismantle or repair it privately.

Before installation, the construction personnel who carry out the installation of the submersible low-speed flow booster must do a good job of equipment foundation work to verify the work, including the elevation of the foundation, elevation, depth of the bolt holes, relative position and center line, etc., and prepare sufficient iron pads.
1. Motor failure: In front of us, the motor is disassembled, idle, and find out the problem. Not surprisingly, the motor makes abnormal sounds and vibrates more; the submersible low-speed flow booster motor sleeve makes a hissing sound, as if part of the feeling of "lost" and out of sync, and the motor runs idle for less than 2 minutes. The shaft extension temperature reaches more than 60 degrees and feels hot.
2. The following is the propeller pump side bearing assembly
The outer ring of the bearing is 5 positions, the inner sleeve is positioned and the submersible mixer and the compression spring is fixed, and the skeleton oil seal specification is 55x80x8. In the steps of fixing the bearing on the shoulder of the φ45 shaft segment and the other end of the bearing seat; the φ55 shaft segment and the H8/F7 bearing seat are equivalent to a sliding bearing, the helical gear above depends on the remaining oil embedded in the right end of the submersible mixer shaft 8, the lifting ring, and the gear box oil stops entering the skeleton oil.
3. Disassembly and inspection: First remove the oil slinger 1, spring retaining ring 2 and 3; remove the motor rear bearing cover, the motor rotor shaft from the motor stator body, and then the bearing, sleeve 4, 5 ring, skeleton oil seal.

SKF6309 bearing inner ring pitting due to the production of four pear skin like pitting area, of which the large diameter of about 20mm, the surface is rough, dull, boring, can clearly see the pitting holes, damage to the skeleton oil seal ring, the inner ring of the bearing and the shaft sleeve 4 and the corresponding shaft neck on the "ring" formed dark spots, found in the inspection and cleaning. Made of good technology and materials, and fully meet the technical conditions specified in the industry, enterprise standards or contracts, to ensure that the equipment has satisfactory performance during its service life after correct installation, normal operation and maintenance. After the equipment is manufactured, the quality and performance requirements of the equipment will be inspected in detail and comprehensively according to relevant standards and contractual provisions to ensure that the quality meets the requirements of the purchaser and a product quality certificate will be issued.