MD-type mine multistage centrifugal pump Product Category: Diameter: Φ80-Φ250 (mm) Flow: 6.3-450 (m3 / h) Head: 20-600 (m) Applicable medium: for transport of water and solids content of not more than 1.5% (volume concentration) neutral mine water (particle size less than 0.5mm), and other similar sewage liquid temperature did not exceed 80 degrees a product introduction, MD Mine wear multi-stage centrifugal pump Product Overview MD Mine wear multi-stage centrifugal pumps, I plant in the D-type coal with horizontal single-suction multi-stage centrifugal pump on the basis of improving a wear-resistant multi-stage centrifugal pump design. MD Mine wear multi-stage centrifugal pumps, energy efficient, reliable wear-resistant, long life. Two, MD Mine wear multi-stage centrifugal pump range of applications suitable for the transport of water and solid particle content is not more than 1.5% (volume concentration) neutral mine water (particle size less than 0.5mm), and other similar sewage liquids . Especially for coal and other mine drainage. Medium temperature MD Mine wear multi-stage centrifugal pump is not higher than 80 ℃. Three, MD Mine wear multi-stage centrifugal pumps Product Features 1, wear multi-stage centrifugal pumps for the segmented horizontal multi-stage pump suction port is horizontal, vertical up the spout. The pump is driven directly coupling the prime mover. From the motor end pump, the pump rotates clockwise. 2, MD-type pumps by the stator, rotor, bearings and seal four major components: stator portion mainly by inhalation, middle, spit section, vanes and other components, with tension bolt clamping the segments constituting the studio . Mainly by the rotor shaft, impeller, balance disc and sleeve and other components. Impeller shaft transfers power to make it work; axial force is balanced by disc; ends of the axle fitted with replaceable bushings to protect shaft. Bearing part of a two Rolling and plain bearings: Rolling bearing body consists of, bearings and bearing gland and other components, the use of grease. Plain bearings consist of bearing body, bearing cap, bearing, dust pan, oil level gauge, slinger and other components, thin oil lubrication. Seal with packing seals, mainly by sealing gland body water segment and stuffing body, filler, retaining ring components. Seal the working fluid in the chamber from the water seal, water-cooled and water lubrication. Seal water pressure in the water from the pump. 3, high efficiency, easy installation and maintenance: the use of energy-efficient hydraulic model. This series of pumps with high efficiency, wide range of performance, safe and stable operation, low noise, long life, easy installation and maintenance. 4, the whole long life: the shaft is fully sealed structure to ensure no contact with the media, does not rust, long life. Four, MD Mine wear multi-stage centrifugal pump Model significance: MD450-60X6 MD- coal mine wear multi-stage centrifugal pump rated flow 60- 450- design point design point of single stage lift (m) 6- pumps series five, MD Mine wear multi-stage centrifugal pump Model Specifications Order Flow Head Power Speed ??NPSH No. m3 / hm kw r / min m 1 MD6-25 × 3 6.3 75 5.5 2950 2-2.5 2 × 4 100 7.5 3 × 5 125 7.5 4 × 6 150 11 5 × 7 175 11 6 × 8 200 15 7 × 9 225 15 8 × 10 250 18.5 9 × 11 275 18.5 10 × 12 300 18.5 11 MD6-50 × 3 6.3 150 15 2950 2-2.5 12 × 4 200 18.5 13 × 5 250 22 14 × 6 300 30 15 × 7 350 30 16 × 8 400 37 17 × 9 450 37 18 × 10 500 45 19 × 11 550 45 20 × 12 600 55 21 MD12-25 × 3 12.5 75 7.5 2950 2-2.5 22 × 4 100 11 23 × 5 125 11 24 × 6 150 15 25 × 7 175 15 26 × 8 200 18.5 27 × 9 225 18.5 28 × 10 250 22 29 × 11 275 22 30 × 12 300 30 31 MD12-50 × 3 12.5 150 18.5 2950 2-2.5 32 × 4 200 22 33 × 5 250 30 34 × 6 300 30 35 × 7 350 37 36 × 8 400 45 37 × 9 450 45 38 × 10 500 55 39 × 11 550 55 40 × 12 600 75 41 MDG25-30 × 3 25 90 15 2950 2.2-2.6 42 × 4 120 18.5 43 × 5 150 22 44 × 6 180 30 45 × 7 210 30 46 × 8 240 37 47 × 9 270 37 48 × 10 300 45 49 MD25-50 × 3 25 150 22 2950 2.4-2.8 50 × 4 200 30 51 × 5 250 37 52 × 6 300 45 53 × 7 350 55 54 × 8 400 75 55 × 9 450 75 56 × 10 500 75 57 × 11 550 90 58 × 12 600 110 59 MDG46-30 × 3 90 22 2950 2.4-4.6 60 × 4 120 30 61 × 5 150 37 62 × 6 180 37 63 × 7 210 45 64 × 8 240 55 65 × 9 270 55 66 × 10 300 75 67 MD46-50 × 3 46 150 37 2950 2.5-3.2 68 × 4 200 45 69 × 5 250 55 70 × 6 300 75 71 × 7 350 90 72 × 8 400 90 73 × 9 450 110 74 × 10 500 110 75 × 11 550 132 76 × 12 600 132 77 MD85-45 × 3 85 135 55 2950 3.2-5.2 78 × 4 180 75 79 × 5 225 90 80 × 6 270 110 81 × 7 315 ??132 82 × 8 360 132 83 × 9 405 160 84 MD85-67 × 3 85 201 90 2950 3.3-4.4 85 × 4 268 110 86 × 5 335 132 87 × 6 402 160 88 × 7 469 185 89 × 8 536 220 90 × 9 603 250 91 MD120-50 × 3 120 150 90 2950 3.3-4.4 92 × 4 200 110 93 × 5 250 132 94 × 6 300 160 95 × 7 350 200 96 × 8 400 200 97 × 9 450 220 98 MD155-30 × 3 155 90 75 1450 3.3-4.4 99 × 4 120 90 100 × 5 150 110 101 × 6 180 132 102 × 7 210 160 103 × 8 240 200 104 × 9 270 200 105 × 10 300 220 106 MD155-67 × 3 155 201 132 2950 3.2-6.6 107 × 4 268 185 108 × 5 335 220 109 × 6 402 280 110 × 7 469 315 111 × 8 536 355 112 × 9 603 450 113 MD280 -43 × 3 280 129 160 1450 2.5-5.2 114 × 4 172 200 115 × 5 215 250 116 × 6 258 315 117 × 7 301 355 118 × 8 344 450 119 × 9 387 450 120 MD280-65 × 3 280 195 280 1450 2.8-5.0 121 × 4 260 355 122 × 5 325 450 123 × 6 390 500 124 × 7 455 630 125 × 8 520 710 126 × 9 585 800 127 × 10 650 900 128 MD360-40 × 3 360 120 185 1450 2.8 -5.0 129 × 4 160 250 130 × 5 200 315 131 × 6 240 400 132 × 7 280 450 133 × 8 320 500 134 × 9 360 560 135 MD450-60 × 3 450 180 355 1450 3.8-6.0 136 × 4 240 500 137 × 5 300 630 138 × 6 360 710 139 × 7 420 800 140 × 8 480 900 141 × 9 540 1000 142 × 10 600 1120 Note: Some models. Six, D-type horizontal multistage centrifugal pump Caution 1.D, DG pump coupling end look from the rotation is clockwise, check the motor rotation is correct, loosen the nut to prevent reverse pump. 2. Turn off the tap valve and pressure gauge on the discharge pipe 3. The full inlet valve. The vacuum pump to pump water or water. 5. After the above process is complete power, when the rotor is up to speed and then gradually open the discharge piping of the valve, and adjust to the required conditions. In the discharge pipeline valve is closed, the pumps operate continuously for longer than three minutes. 6. Pay attention to the water pump bearing temperature, ambient temperature must not exceed 35 ℃, its duration shall not exceed a temperature of 75 ℃. 7. packing indoor normal leakage level, subject to 15 ml per minute, should be ready to adjust the degree of the compression gland. 8. During operation, such as occurs when abnormal vibration and noise, immediately stop checking reasons.