Beijing Fengtai deep well pump submersible pumps sewage pump pipeline maintenance salvage pump motor pump fan maintenance

Major maintenance projects: a, electrical and mechanical maintenance: the level of professional maintenance of domestic imports of medium and large AC and DC motors, synchronous motors and medium-sized high and low voltage maintenance test and transformation. Repairing all kinds of motor, servo motors, welding machines, axial fans, smoke machines, centrifugal fans, etc., free of charge for the majority of users do motor, pump rotor balancing. Motor overhaul. Second, the water pump maintenance: Professional maintenance of various domestic and imported sewage pumps, centrifugal pumps, multistage pumps, shielding pumps, deep water pumps, variable frequency pumps, fire pumps and control systems. Sales processing build all kinds of mechanical seals, metal seals, oil seals. Pump technology consulting in design and installation, pipeline reconstruction, renovation and maintenance of pumps triple fan pipe repair sewage pump without clogging pumps belong to one of a variety of forms: as diving and dry two kinds, currently the most commonly submersible for the WQ submersible sewage pumps, the most common dry-as W horizontal and WL type vertical sewage pump two kinds. Mainly used for conveying the urban sewage, manure or liquid containing fibers. Paper and other solid particles in the medium, the transmission medium temperature is usually not more than 80 ℃. Since the medium is transported contains easy to wound or bunching the fiber material. So the kind of easy to plug the pump flow, pump once clogged pump is not working properly, or even burning motor, resulting in poor sewage. Serious impact on urban life and environmental protection. Thus, anti-blocking and reliability is an important factor in the merits of the sewage pump. Like other pump, impeller, water pressure chamber, the sewage pump two core components. Its performance, also on behalf of the merits of pump performance, anti-clogging sewage pump performance, the level of efficiency and cavitation performance, anti-abrasion performance is mainly composed of two parts vane pumps and pressurized water chamber to be guaranteed. Following a brief, respectively: 1, impeller structure type: the impeller structure is divided into four categories: vane (open, closed), swirl, runner type, (including single channel and double channel) screw centrifugal type four, open semi-open impeller ease of manufacture, when the impeller causing blockage, you can easily clean up and repairs, but in the long run, the abrasive particles in the gap between the blades and the pressure causes water chamber sidewall increase, so that the efficiency is reduced. And increase the gap will destroy the pressure distribution on the blade. Not only the loss of a large amount of vortices, and the axial force can cause the pump to increase, at the same time, since the gap increased stability in the flow path of the liquid flow pattern of damage to the pump vibration, this kind of type of impeller is not easy to transport with large particles and long fibers of the media, from a performance perspective, this type of low impeller efficiency, maximum efficiency is equivalent to about 92% to about ordinary closed impeller, head curve relatively flat. 2, swirl impeller: With this type of impeller pump, since the impeller part or runner all shrink from pressurized water chamber. So without blocking performance, a strong over-capacity and long fiber particles by ability. Particles in the vortex flow driven by pressurized water indoor movement generated by the rotation of the impeller, suspended particles themselves do not produce energy, but in the flow channel and fluid exchange of energy. In the flow process, the suspended particles or long fibers are not in contact with the blade, blade wear much less the case, the situation is due to erosion and increase the gap does not exist in the long run will not cause a serious problem of declining efficiency, the use of the type of impeller pumps suitable for pumping media containing large particles and long fibers. From a performance perspective, the impeller efficiency is low, equivalent to only about 70% of normal closed impeller, head curve relatively flat. 3, closed impeller: the higher the efficiency of the type of impeller normal. And in the long run the situation is more stable, the use of this type of impeller shaft to force smaller, and you can set the vice blade in the front cover. Deputy leaves on the front cover can reduce the vortex impeller inlet losses and wear particles on the sealing ring. Deputy leaves the rear cover not only serves as balancing axial force and can prevent suspended particles into the mechanical seal chamber for mechanical seal protection. Without blocking the type of impeller poor, easy to wound, not for pumping contain large particles (long fibers) and other media at the end of the treated sewage. 4, flow impeller: the kind of impeller belong bladeless impeller, impeller from the inlet to an outlet of a curved flow channel. It is appropriate for pumping media containing large particles and long fibers. Anti-blocking is good. From a performance perspective, this type of high-efficiency and ordinary closed impeller impeller or less, but with the type of impeller pump head curve is more steep drop. Power curve is relatively stable and difficult to produce super-power problem, but this type of impeller cavitation performance is not as good as ordinary closed impeller, especially suitable for use in pressurized imported pumps. 5, screw centrifugal impeller: the impeller vane is twisted spiral blades, the hub body from the conical rim extending axially inhalation. This type of pump impeller and having a displacement pumps and centrifugal effect, the suspended particles in the leaves flowing out of date, does not strike any part of the pump, so destructive of good. Delivery was devastating to small. Due to the spiral of advancing the role of suspended particles through strong, so the use of this type of impeller pumps suitable for pumping large particles and long fibers of the media, as well as a high concentration of media