LG-type multi-stage centrifugal high-rise building Categories: Diameter: Φ25-Φ100 (mm) Flow: 3-72 (m3 / h) Head: 20-180 (m) Applications: Clean water a product introduction, LG Vertical multi Product Overview LG-stage centrifugal vertical multistage centrifugal pump is based on a new generation of high-rise buildings to my country to the drainage and fire control bureau of standards development for aquatic products. As a result of this type of pump hydraulic model of energy efficient, it has a high efficiency, wide range of performance advantages, and better meet the requirements of users. LG Department of vertical, single suction, multistage, centrifugal pumps will be demolished, its inhaled into the discharge port are located on the water segment. Rotor assembly from the shaft, impeller, impeller gear sets, bushings and other parts, the water segment, the middle section of the water coupled with tightening bolts. Seal with soft packing seal or mechanical seal, lubricating and cooling water pressure balance chamber. Product implementation of JB / T2727-93 "vertical multistage centrifugal pump Jane Types and basic parameters" standard. Two, LG vertical multistage centrifugal pumps Applications LG vertical multistage centrifugal pump is particularly suitable for residential, hotels, office buildings and other high-rise building water supply, fire protection, sprinkler water supply equipment pumps; also suitable for chemical industry system regulator, the production process water recycling, long-distance transport, water supply and other water supply boiler equipment; automatic water flow cooling tower. (Medium hot water can transport temperature of less than 105 degrees) can be transported as a liquid at room temperature (<80 ℃) water or physical and chemical properties similar to water medium at room temperature. Three, LG Vertical Multistage Centrifugal Pump Features 1, low pump cost: high-speed motor, so that the series of pump with a light weight, small size and low cost, such as with shield can be placed outdoors. 2, less operational and maintenance costs: the use of reliable mechanical seal, low failure rate, with less operational maintenance costs. 3, this series will be demolished pump structure, user-friendly replacement of mechanical seals and other wearing parts, easy installation and maintenance, without the need to open pipeline system. Pump inlet and outlet of the same caliber, simplifying the piping connections. 4, can use pumps in series or parallel operation required flow and head. 5, according to need, inlet and outlet may be mounted in the same direction or 90 °, 180 °, 270 ° in several different directions to meet different connection situations. 6, the pump head can be adjusted according to needs and combine cutting the pump impeller diameter series to be met without changing the install footprint, 7, novel structure, reliable operation: the abolition of the balancing drum (disc), its axial force water balance, balance drum completely solved easily corroded, easy killed, easy to wear problems and ensure a more reliable operation. 8, unique components, reduce noise: the unique design of hydraulic components, good flow performance over the maximum to reduce the flow noise. Four, LG, LGW, LGR vertical multistage centrifugal meaning 100LG (W, B, R) -72-20 * 6 100- pump inlet diameter (mm) LGW- vertical multistage fire pump regulator to LGR- hot water 72- point design flow (m3 / h) 20- Single-stage impeller design point lift (m) 6- pump series five, LG vertical multistage centrifugal pump main performance parameters No. Model series flow Q Head H Power m3 / h L / S (m) (KW) 1 25LG3-10 2 3 0.8 20 0.75 2 3 30 1.1 3 4 40 1.5 4 5 50 1.5 5 6 60 2.2 6 7 70 2.2 7 8 80 2.2 8 9 90 2.2 9 10 100 3 10 11 110 3 11 12 120 4 12 13 130 4 13 14 140 4 14 15 150 4 15 32LG6.5-15 2 6.5 1.8 30 1.5 16 3 45 2.2 17 4 60 3 18 5 75 4 19 6 90 4 20 7 105 5.5 21 8 120 5.5 22 40LG12-15 2 12 3.3 30 2.2 23 3 45 3 24 4 60 4 25 5 75 5.5 26 6 90 5.5 27 7 105 7.5 28 8 120 7.5 29 50LG24-20 2 24 6.7 40 5.5 30 3 60 7.5 31 4 80 11 32 5 100 11 33 6 120 15 34 65LG36-20 2 36 10.0 40 7.5 35 3 60 11 36 4 80 15 37 5 100 18.5 38 6 120 22 39 80LG50-20 2 50 13.9 40 11 40 3 60 15 41 4 80 18.5 42 5 100 22 43 6 120 30 44 100LG72-20 2 72 20.0 40 11 45 3 60 18.5 46 4 80 22 47 5 100 30 48 6 120 37 49 7 140 45 50 8 1604551918055 Note: Pumps are the mechanical seal type, two motors. Six, LG vertical multistage centrifugal pump Caution 1, the height of the water pipe must be sealed and not leaking gas leakage; 2, the long-running ban pump cavitation in the state; 3, Non pump high flow and low head in operating conditions, the motor over current long-term operation; 4, regularly check the current value of the pump motor is running, try to run the pump within the design range of operating conditions; 5, pump in operation should be supervised to avoid accidents; 6 , pump the long run, due to mechanical wear and tear, the unit increased noise and vibration, should stop and check, if necessary, replacement of wearing parts and bearings, unit overhaul period is generally one year. 7, mechanical seals Maintenance: 1) mechanical seal lubricating fluid should be clean and free of solid particles; 2) non-mechanical seals at (anhydrous) dry grinding work situation; 3) before starting the pump should Barring (motor. ) a few times, so as not to break suddenly start causing damage to the mechanical seal.