Tongda Pump (Group) Co., Ltd. was founded in the early 1980s, as the state designated specialized manufacturer of industrial pumps, the company is located in Baoding National High-Tech Development Zone, adjacent to Beijing and Tianjin, Beijing, Shenzhen Expressway and Beijing-Guangzhou high-speed railway, transportation is very convenient . Mastery Valve Group is the development, manufacturing and marketing in one large company, covers an area of ??over 60,000 square meters, fixed assets of over billion, more than 800 employees, under the jurisdiction of three wholly owned and controlled subsidiaries. The company has large CNC machining centers, large digital display boring machine, digital large vertical lathe, CNC lathe, large planer milling machines, gantry grinder, universal grinder, digital horizontal milling, milling and other advanced equipment more than 100 sets; domestic first-class The pump performance test testing station, spectrum analyzer, noise detector, flaw detector, temperature detectors, vibration detectors, static and dynamic balancing machines, hardness and many other specialized testing equipment; also has the industry's leading fully automated V France casting production lines, high-chromium alloy casting, cast steel, cast iron, stainless steel castings and large castings. One, WQ submersible sewage pump digestion, the absorption of similar foreign products developed advanced technology to success, with high efficiency, anti-winding, non-blocking, automatic coupling, high reliability and automatic control, etc., in the carriage of solid particles and long fibers litter, has unique features. The pump discharge water caliber 50∽600mm, flow 10 ~ 7000m3 / h, head of 5∽60m, power of 1.5 ~ 315KW, through the solid particle diameter of 20 ~ 145mm. Second, use and characteristics WQ submersible sewage pump is mainly used for municipal engineering, industry, hospitals, buildings, hotels, restaurants and other industries. For sludge, waste, urban sewage discharge conveyor belt and a variety of solid long fibers (including corrosive, aggressive media applications). WQ submersible sewage pump is small, compact, high efficiency, the water level can be automatically controlled according to user requirements, with automatic protection devices and control cabinets, dual-rail system is installed automatically. Third, the use of conditions 1, motor rated voltage 380V, frequency 50HZ three-phase AC power. 2, the transmission medium temperature does not exceed 40oC. 3, transmission fluid medium PH value 4-10. 4, the solid phase material transport medium volume ratio of less than 2%. 5, the transmission medium density of less than 1.2 × 103Kg / m3 four compact structure characterized by WQ submersible sewage pump, and set up a variety of status display, protection devices, making the pump operation safe and reliable. 1, the unique design of the cable seal, eliminating the cable leakage risks. 2, stator insulation class F, equipped with thermal protection components. 3, 18.5KW more external circulating water pump automatic cooling, to ensure the safe operation of the electric pump at the lowest level status. 4, the motor cavity bottom with a float switch, mechanical seal on the motor side implementation monitoring. 5, at the upper end of the pump and motor oil chamber equipped with water probe for monitoring the implementation of the water pump mechanical seal, once the leak, the control system will alarm protection. 6, bellows type double mechanical seal, seal material is tungsten carbide, silicon carbide and carbide, to prevent water from entering the motor, to ensure safe and reliable operation of the motor. 7, Vice impeller for balancing mechanical seal external pressure, prevent water from entering the oil chamber, thus extending the life of the pump. 8, impeller design unique, large passage through the long fibers and dirt, anti-clogging, anti-winding, high flow capacity. 9, fitted between the impeller and volute lower end of the replaceable wear sleeve to keep the pump running at optimum efficiency. Fifth, the impeller design features to ensure the smooth passage of dirt, we must increase the width of the impeller flow surface for large pumps, can be double-blade, three-blade; for small pumps, the use of a single (double) flow channel form, it similar to a cross section of the elbow of the same size, but also had a very good flow properties. Avoid clogging the water at low speed may cause the wound. The unique design of the impeller, with reasonable cochlear room, making sewage paper, textiles, trash bags and other materials can be freely passed. Impeller through dynamic and static balance, so that the pump with load and no-load commissioning process not vibrate. Six, installation and use of the company's submersible sewage pumps, pump coaxial, compact, high efficiency, easy installation and maintenance, running economy, adaptability, its installation has installed mobile and fixed installation, fixed installation divided into fixed automatic coupling installation and dry-mounted, mobile installation called the Freestyle installation. Automatic coupling installation of automatic coupling device can pump installation quick and easy slip along the rail into the water medium, the pump and the base automatic coupling seal. Installation and maintenance upgrade is very convenient. In this form of security types, the pump is connected to the coupling device, coupled to the base fixed to the lower part of the pump pit (at the time of the construction of the sewage pit, with good anchor bolts embedded, the coupling can be fixed using the base) pump can guide automatically move up and down, when the pump down, the coupling device is automatically coupled with the coupling base, and enhance the pump automatically disengage from the coupling base. This approach can be equipped with a hydraulic switch according to user requirements, intermediate terminal box and automatic protection control cabinet. In the selection, should specify the type of pump, installation, pool depth, pump control and protection methods in order to provide optimal system. If the user special needs, I can provide specialty materials plant pumps. Fixed dry-mounted pump unit on the other side of the pump pit, and the inlet pipe fixed to the base together. As a result of the water jacket cooling system to ensure the pump is running at full load. Advantages: Continuous flow impact on water pits without damaging the pump and can withstand accidental flooding. Suitable for municipal construction, sewage pumping stations underground overpass emissions. Mobile pump mounting bracket to support, connect the hose to the water. Suitable for river management, industrial discharges, municipal construction sludge pumping and other occasions. Should be carefully checked before installation and use of Notes (1) Start pump in the transport, storage, installation process without deformation or damaged fasteners loose or fall off. (2) Check the cables for damage, breakage and other phenomena, if damaged, should be replaced to avoid leakage. (3) Check the power supply device is safe and reliable, and the nameplate rated voltage must match. (4) Check the motor stator windings cold megger insulation resistance value shall not be less than 50M Tong ￡ (5) non-pump cable from the sling as the installation and use, to avoid danger. (6) from the direction of rotation of the pump intake look for counterclockwise rotation, if the pump is reversed, just swap any two cables at the terminal position, the pump can forward. (7) vertical submersible pumps should be allowed horizontally, not fall into the sludge, when the pump moves must be cut off. (8) multiple use pump must run into the water for several minutes, leaving the sediment to prevent the pump, ensure pump clean. (9) Long-term pump when not in use, should be removed from the water pump to reduce the chance of stator winding is damp, and increase pump life. (10) Under normal operating conditions, the pump after a year, should be carried out maintenance, replacement of worn wearing parts, check the tightening state, supplement or replace the bearing grease and oil chamber machine oil, ensure electricity the good functioning of the pump.