★ Product Description: BQS series flameproof submersible pump sewage sediment is my company and Jiangsu University jointly developed, complete product specifications, power range from 2.2kW ~ 315kW, flow range from 10m3 / h to 2500m3 / h , head range from 7m to 700m, all the products are to achieve a full head, without overload. Company perseverance the product of technical innovation to solve the submersible pump sewage sediment in the product structure, parameter optimization, manufacturing processes, operational efficiency, leak-proof seal, materials, applications and other aspects of key technical problems, over twenty patents , the application of a number of the latest research results, the formation of a mature motor, pump manufacturing process, with the domestic similar products, compared with safe, reliable, lightweight and practical, sewage sediment performance, long life, reasonable spectrum, selection and easy. ★ Main Uses: Suitable for coal mine methane (commonly known as gas) and coal dust explosion hazard, containing sediment transport, coal, coal gangue, coal cinder, fibers, and other insoluble solids in the mixed effluent. Also apply to construction of buildings, hospitals, residential areas, municipal engineering, traffic and construction, sewage plants, sewage treatment and other occasions small carriage containing solid particles, long fibers wastewater, rainwater and sewage. ★ conditions of use: 1, Power 380V or 660V or 1140V, three-phase, 50HZ. 2, medium temperature generally does not exceed 40 ℃, PH value 5-9, medium and severe ≤ 11kN/m3 3, medium diameter solids shall comply MT / T 671-2005 requirements, special requirements when ordering reminder. ★ Model composition and what they mean: BQS ① - ② / ③ - ④ ⑤ BQS: flameproof submersible pump sewage sediment ①: rated flow, in cubic meters per hour (m3 / h) ②: Rated Yang Cheng, in units of (m) ③: series ④; motor rated power in kilowatts (KW) ⑤: N is built-in; B semi-built-in; exterior does not inject ★ salient features: 1, the model selection: Performance optimized to run smoothly without clogging sewage sediment capacity, pump has no overload (full head) characteristics, that working conditions at any point does not exceed the input power using the matching motor power. For coal mine for all occasions, to a machine. 2, the mechanical seal improvement: using an independent tandem mechanical seals and double mechanical seal. 3, structural optimization: structure design something for mechanical seal tightness, smooth operation, high reliability; optimal design, lighter use, low energy consumption. In the case of water, the long-run empty. 4, IPx8 motor protection chip level, submersible motor cooling effect, lower temperature than conventional motors. Further improve durability, F class insulation procure motor last longer. ★ Structure Description: The overall structure of the pump is vertical, the whole dive, mechanical and electrical integration, downdraft water can drain drained face surface shallow layer of water. The major products from the two flow components and motor parts. Pump discharge structure by way of flow can be divided into externally mounted, built, semi built-in. 1, pump body, impeller: In the actual test, based on the careful selection and matching of the pump body, impeller, so that no plug is good, over-current capability, high efficiency, power curve is flat, without overload. Impeller smooth precision, small vibration, smooth operation. 2, motor: specially designed submersible motor, IPx8 protection, F class insulation allowed temperature rise, under normal temperature conditions, the motor insulation life expectancy, while diving cooling effect is good, the actual temperature is low, the motor insulation and longer life. 3, the motor cooling: outside-mounted pump: motor heating heat through the enclosure, the medium as long as the stator casing half submerged, reliable and safe operation of the pump can be submerged, the more favorable motor cooling. Built-in pump: pump uses strong cold sandwich structure, even if the motor idling, the motor temperature can also be controlled at 40 degrees Celsius, greatly improving the life of the machine is suitable for shallow water areas, products in the absence of water long-term air operation, can be used in unattended environment, reducing labor costs. 4, the seal: motor seal with two separate series of mechanical seals, forming two reliable seal line. First medium in the pump, sealing surface with medium pressure increases the weight of tighter, effectively prevent water from entering the oil chamber, the second chamber in oil to prevent oil from entering the motor, if the first failure (it works some conditions than the second), the second water is prevented from entering the motor. Bellows-type mechanical seal chamber with innovative structures that seal reliability is further greatly improved, under normal usage, uptime more than 2000h. 5, the oil chamber: oil chamber is to prevent the media from the shaft into the motor of a barrier to prevent the media from entering the motor, if the first mechanical seal leakage, by the oil chamber buffer medium not directly into the motor, while the two independent mechanical seal friction surface lubrication cooling, the mechanical seal is reliable, except that it can still take away the heat and motor bearings under some heat. 6, bearing: the lower the double row angular contact bearing load capacity, with the upper groove bearing components reliable motor water pump shaft bearing, generated when the work on the pump radial and axial forces and other forces have a greater bearing margin degrees, to ensure smooth operation and long machine life. 7, cables and cable glands for use in mines using MT818.5-1999 flame retardant cable, the cable core cross section at 40 degrees Celsius ambient temperature and motor load power under long-term reliable operation of the design, if the work, the full power of the motor in the non-or under 40 degrees Celsius below ambient operation and longer life. Rubber cable gland between the seal and the motor pressed, to prevent the media from the interface between the cable and the motor cover penetrate the motor cavity. 8, the motor housing: housing, on the cover, under cover, motor casing and other components, the parts connected with the Department a reliable static sealing, each hydrostatic test strict checks to ensure no leakage foolproof. 9, special handle: a special handle for carrying, please hurried in the handling of the cable when used as a handle. ★ pump main parts: Parts pump body, impeller pump cover motor housing shaft mechanical seal pump side motor side friction material material QT600-3 ring graphite cast iron or steel pipe 45 2Cr13 graphite / ceramic carbide / carbide ★ Line Cable Description: Light blue (U), red (V), white (W) for the three-phase power line. grounding wire: Black ★: BQS (W) Series - externally mounted pump externally mounted pump is designed to pump structure , the outlet is located in the lower part of the machine, water directly discharged from the pump through the outlet of the pump-motor power 22KW generally less compact single-stage single-suction pump, its distinguishing feature is a simple, lightweight and practical, too sewage capacity, suitable for water containing medium, slime, gravel more use of premises. BQS (W) Series - Built-in Built-in electric pump pumps the overall structural design is vertical, the next pump, using the built-in motor structure. Motor housing with mezzanine, normal drainage, pumping water from the mezzanine flowed out from the top, the motor cooling water; Even without water, there are water-cooled motor outside the mezzanine motor, ensure that the motor does not overheat and burn. No special care and greatly reduce the labor costs, the company most of the single-stage and multi-stage pump with a built-in structure. BQS (W) Series - Semi built-in electric pump both semi-built-in built-in pumps and pump externally mounted pump advantages, more lightweight, but also to ensure the motor after the motor cooling without water no problem.