- Country of manufactureRussia
- The medium to be pumpedTeknisk vatten
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CENTRIFUGAL PUMP K20/30-U2M |
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General information The pump centrifugal console K20/30-U2M is intended for water supply and other pure liquids similar to water on density, viscosity and chemical activity, with the content of firm inclusions in number of no more than 0,1% on volume and particles up to 0,2 mm in size. Temperature of the pumped-over liquids from 0 to 85 °C. Structure of a symbol KH/Hkh-HH: Service conditions Nominal rates of climatic factors at operation in accordance with GOST 15150-69. Normative and technical document TU 78.2.062-91 Technical characteristics Giving of Q, m3/h - 20 Pressure of N (the deviation on-6 is allowed... +7%), m - 30 Frequency of rotation of the electric motor, mines-1 - 2900 the Power of the pump N, kW - 2,7 Admissible cavitational stock of D hd , m - 4 Vakuummetrichesky height of absorption, m of water column, no more - 5 efficiency of h, %, not less - 64 Resource of the pump before write-off at service life no more than 6 years, h - 20 000 Characteristics of the pump K20/30 for various turnings of the driving wheel with a nominal diameter of 162 mm - continuous lines, K20/30a (turning to 148 mm) - shaped, K20/30b (turning to 128 mm) - dash-dotted Warranty period of service - 1 year from the date of input of the pump in operation, but no more than 1,5 years from the date of shipment. Order of calculation of a guarantee in accordance with GOST 22352-77. The centrifugal console pump K20/30-U2M - horizontal, one-stage with a unilateral supply of liquid to the driving wheel. The pressure head branch pipe is located at an angle 90 ° to a pump axis. If necessary at installation and operation the pressure head branch pipe can be turned on 90 °, 180 ° and 270 °. The pump housing represents pig-iron casting which internal cavity has the form of the spiral passing into a pressure head branch pipe. The cover of the case is cast from cast iron as a single whole with an entrance branch pipe. The driving wheel of the pump pig-iron, consists of two disks connected by spatial or cylindrical shovels is fixed on a shaft by means of a spline and a nut. The pump shaft steel, located in an arm, leans on ball-bearings which perceive insignificant efforts, settles down in horizontal position (it is checked on level). On the end of a shaft the epiploon consisting of the case cast as a single whole with a pump housing, covers of an epiploon and cotton stuffing is located. The inhaling of an epiploon has to provide some (till 15-20 drops in a minute) the admission of liquid. Too hard inhaling leads to the increased friction and bystry wear of an epiploon, and also to the raised electric power expense. Liquid input in the driving wheel axial. In the highest point of the case there is an opening closed by a stopper for production of air from the case and the soaking-up pipeline when filling the pump before start-up of the pumped-over liquid. In the lower part of the case there is an opening closed by a stopper for discharge of the pumped-over liquid at long stops of the pump. The direction of rotation of a rotor left, counterclockwise, if to take a detached view the drive. The pump is issued with the elastic coupling for direct connection with the electric motor. On the place of operation the unit should be installed on the rigid base which mass in 5-6 times more the mass of the pump. At connection of the pump with the electric motor (by means of the elastic coupling) coincidence of their geometrical axes to an admissible netsentrichnost no more than 0,2 mm has to be provided. At installation tightness of connections especially on the soaking-up party in order to avoid suction with air vacuum in system has to be provided that breaks operation of the pump. Grounding of the pump and other requirements of electrical safety according to GOST 12.2. 007.0-75. |