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[China]
Contact name:
Shijiazhuang Shiza Pump Industry Co.,Ltd. |
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Overview
The High Chromium Alloys EXPELLER 028 Slurry Pump Spare Parts is an important part of the expeller seal. The expeller fluid dynamic seal refers to the installation of an open impeller in the opposite direction of the coaxial direction near the back of the impeller rear cover of the pump. When the pump is working, the expeller rotates with the pump spindle, and the liquid in the expeller rotates together. The rotating liquid creates an outward centrifugal force that resists the liquid flowing to the mechanical seal and reduces the mechanical seal. pressure. On the other hand, the solid particles in the medium are prevented from entering the friction pair of the mechanical seal, which reduces the wear of the mechanical seal block and prolongs its service life.
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The role of the centrifugal pump impeller: The mechanical energy of
the prime mover is directly transmitted to the liquid to increase
the static pressure and kinetic energy of the liquid to mainly
increase the static pressure energy. The impeller has open,
semi-closed and closed three open impellers without cover on both
sides of the blade. It is easy to manufacture and easy to clean. It
is suitable for conveying materials containing a large amount of
suspended solids. The efficiency is low and the liquid pressure is
not delivered. High; semi-closed impeller has no cover on the
suction side and a cover on the other side, suitable for conveying
materials that are easy to precipitate or contain particles, and
the efficiency is also low; the closed impeller has on both sides
of the impeller Front and rear cover, high efficiency.
Structure of slurry pump
| No. | Name | Material |
| 1 | Impeller | High-chrome alloy |
| Natural Rubber | ||
| 2 | Volute casing | High-chrome alloy |
| 3 | Front liner plate | High-chrome alloy |
| Natural Rubber | ||
| 4 | Rear liner plate | High-chrome alloy |
| Natural Rubber | ||
| 5 | Liner | High-chrome alloy |
| 6 | Expeller | High-chrome alloy |
| 7 | Shaft sleeve | 3Cr13 |
| 8 | Water-seal ring | High-chrome alloy |
| 9 | Shaft | 45#steel quenching and high temprature tempering |
| 10 | Bearing housing | Gray Iron |
| 11 | Expeller ring | High-chrome alloy |
| Natural Rubber | ||
| 12 | Front casing | Gray iron or Nodular cast iron |
| 13 | Rear casing | Gray iron or Nodular cast iron |
| 14 | Base | Gray Iron |
| 15 | Support | QT500-7 |
Centrifugal pump impeller principle
The mechanical energy of the prime mover is directly transmitted to
the liquid to increase the static pressure and kinetic energy of
the liquid to increase the static pressure energy. The impeller
generally has 6 to 12 back curved blades. The impeller has three
types: open type, semi-closed type and closed type. The open
impeller has no cover on both sides of the blade, which is simple
to manufacture and convenient to clean. The centrifugal pump
impeller is suitable for conveying materials containing a large
amount of suspended solids, and the efficiency is low, and the
liquid pressure delivered is not high; the semi-closed impeller is
in the suction port. There is no cover on one side and a cover on
the other side, which is suitable for conveying materials that are
easy to precipitate or contain particles, and the efficiency is
also low. The closed impeller has front and rear cover plates on
both sides of the blade, which is highly efficient and suitable for
use. Deliver clean liquid without impurities. The general
centrifugal pump impeller is mostly of this type. The impeller has
two suction and double suction modes. There is a single inlet for
the water inlet, and it is double suction for water entering from
both sides.
Vane Of Pump
