The main features and components of mortar pump
2019-02-05 08:07:03
The mortar pump has the characteristics of small volume, light weight, flexibility and convenience. It is used to transport mortar horizontally and horizontally. It is widely used in metallurgy, national defense engineering, civil defense engineering, mines, tunnels, chemical engineering, hydraulic engineering, power engineering and highway engineering. Grouting and media transportation.
The main components of the mortar pump are the impeller, the pump casing and the shaft sealing device.
1. Impeller The open impeller has no cover on both sides of the blade and is suitable for conveying materials containing a large amount of suspended materials. It is inefficient and rarely used.
The semi-closed impeller has no cover plate on the inlet side and a cover plate 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 back covers on both sides of the blade, which is efficient and suitable for conveying liquids that do not contain impurities.
Closed impeller has a single suction and double suction two ways.
2. The function of the pump casing is to confine the impeller in a certain space so that the liquid can be sucked in and pressed out by the action of the impeller. The pump casing is made into a volute shape, so it is also called a volute. As the cross-sectional area of ​​the flow channel gradually expands, the high-velocity liquid thrown from the impeller gradually reduces the flow velocity, so that part of the kinetic energy is effectively converted into static pressure energy. The pump casing not only collects the liquid thrown by the impeller, but is also an energy conversion device.
3. The role of the shaft seal device is to prevent the liquid in the pump casing from leaking along the shaft or the outside air from leaking into the pump casing.
Common shaft sealing devices include packing seals and mechanical seals.
Fillers are typically made of oil-impregnated or graphite-coated asbestos ropes.
Mechanical seals mainly rely on the relative motion between the moving ring mounted on the shaft and the stationary ring fixed on the pump casing to achieve the purpose of sealing.
The main components of the mortar pump are the impeller, the pump casing and the shaft sealing device.
1. Impeller The open impeller has no cover on both sides of the blade and is suitable for conveying materials containing a large amount of suspended materials. It is inefficient and rarely used.
The semi-closed impeller has no cover plate on the inlet side and a cover plate 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 back covers on both sides of the blade, which is efficient and suitable for conveying liquids that do not contain impurities.
Closed impeller has a single suction and double suction two ways.
2. The function of the pump casing is to confine the impeller in a certain space so that the liquid can be sucked in and pressed out by the action of the impeller. The pump casing is made into a volute shape, so it is also called a volute. As the cross-sectional area of ​​the flow channel gradually expands, the high-velocity liquid thrown from the impeller gradually reduces the flow velocity, so that part of the kinetic energy is effectively converted into static pressure energy. The pump casing not only collects the liquid thrown by the impeller, but is also an energy conversion device.
3. The role of the shaft seal device is to prevent the liquid in the pump casing from leaking along the shaft or the outside air from leaking into the pump casing.
Common shaft sealing devices include packing seals and mechanical seals.
Fillers are typically made of oil-impregnated or graphite-coated asbestos ropes.
Mechanical seals mainly rely on the relative motion between the moving ring mounted on the shaft and the stationary ring fixed on the pump casing to achieve the purpose of sealing.
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