1、 Overview

The YMDF series horizontal single suction multi-stage centrifugal pump has the advantages of high efficiency, wide performance range, safe and stable operation, low noise, long service life, and easy installation and maintenance.

It can be used to transport water, oil, and corrosive media according to the pump material, sealing form, and additional cooling system. The operating temperature is -60 ℃~400 ℃, and the materials include cast iron, ductile iron, 304, 316L, 904, duplex steel, etc.

2、 Model meaning

YMDF 46 - 30×4

YM - Yamei code

DF - Corrosion resistant multi-stage centrifugal pump

46- Design point flow rate of 46m3/h

30- Design point single stage lift of 30m

4- The level is 4

3、 Performance Range

Flow rate Q=7.5-864m3/h Head: H=46-2070m

4、 Structural characteristics

1. YMDF type horizontal multi-stage self balancing centrifugal pump, with symmetrical impeller arrangement, can basically eliminate axial force, and residual axial force is borne by a pair of angular contact ball bearings installed back-to-back. Due to the absence of a balancing device, there is no friction loss or reflux loss of the balancing disc during operation, resulting in an efficiency improvement of 5-14% compared to conventional multi-stage pumps. This completely solves various pump failures caused by the failure of the balancing disc, greatly improving the service life of the pump.

2. Single end face, double end face, and containerized mechanical seals can be used to adapt to media containing a certain amount of particle impurities.

3. The medium will not enter the bearing chamber, ensuring the service life of the bearing and reducing maintenance costs.

5、 Structural schematic diagram

1. Pump end coupling 2, shaft sleeve nut (left) 3, gland (left) 4, bearing sleeve A 5, bearing sleeve 6, shaft sleeve

7. Outlet section 8, first stage impeller sealing ring 9, guide vane 10, last stage impeller 11, outlet section 12, sliding bearing 13, right impeller 14, middle section 15, right inlet section 16, gland (right) 17, splash ring 18, end cover 19, shaft sleeve round nut 20, bearing (right) 21, bearing body 22, machine seal gland (right) 23, intermediate sleeve 24, right first stage impeller 25, right guide vane 26, right impeller sealing ring 27, last stage right guide vane 28, alloy shaft sleeve 29, impeller 30, first stage impeller 31, single end balanced machine seal 32, machine seal gland (right) 33, bearing (left) 34, cooling chamber cover 35, bearing body

The number of impellers is the same as the number of stages

6、 Performance curve chart and parameter table