(1) type
Mine submersible pumps are commonly used centrifugal pumps. Centrifugal water pump is a working turbine, mine submersible pumps commonly used in D-type, DA-type and TSW-type multi-stage centrifugal pump; and the bottom of the water nest and mining areas are commonly used drainage B-type, BA type and BZ Type single-stage centrifugal pumps.
① D-type centrifugal pump
D-type pump is a single suction, multi-stage, sectional centrifugal pump. The stator part of the pump is mainly made up of bolts of the middle section, the rear section, the tail cover and the bearing frame, etc. The rotor section is mainly composed of a number of impellers mounted on the shaft and a balance plate. The entire rotor portion is supported on bearings at both ends of the shaft.
The front, middle and rear sections of the pump are bolted together, and the impeller and the water ring are sealed between the impeller and the small mouth ring. In order to improve the water absorption performance, the impeller inlet diameter of the first stage is larger, and the large mouth ring is correspondingly enlarged. Pump shaft through the front and rear parts of the seal by packing, packing gland composed of stuffing box to complete. The axial thrust of the pump is balanced with a balance disc.
D-type pump flow and head range is very large, this type of pump the maximum lift of up to l000m, flow rate of 450m3 / h, to meet the needs of mine drainage, and efficiency curve flat, industrial use area larger.
② B-type centrifugal pump
B-type pump is a single-suction, single-stage, cantilever centrifugal pump. The structure is shown in Figure 10-7. One end of the pump shaft is supported by a bearing in the carriage and the other end is cantilevered and the impeller is mounted at the cantilever end. The bearings can be lubricated with grease or grease. B-type pump small size, light weight, simple structure, reliable, easy to carry and maintenance overhaul. The flow range of 4.5 to 360 m3 / h, head of 8 to 98m. Commonly used in the discharge area, the bottom of the water nest water can be used as other auxiliary supply, drainage equipment.
(2) the main components
① work of the pump wheel.
Working round according to the number of suction can be divided into single-sided water and double-sided water. In the structure of the working wheel can be divided into closed and open. Centrifugal pumps in the work of closed-sided water into the water more. Open-type work wheels are mostly used for sewage pumps or sand pumps, the open leaves covered by the front cover of the pump casing, the front cover can be removed to remove the dirt and dirt on the leaf.
② other parts of the pump flow
The rotating work wheel discharges the water it sucks at a high speed to the surroundings. The immovable flow portion functions to collect, direct and reduce the velocity of the flow into the drain pipe or the next work wheel. In order to achieve higher efficiency of the pump, the flow of water should be avoided in the fixed flow part of the impact, eddy current, and gradually reduce the speed, variable pressure to static pressure.
A. Shell-type water pump shell, such as snails. The water flow from the working wheel into the spiral when the speed decreases, while the spiral section gradually expanded to pool all the water, the final water by the diffuser (take over the part) again after the rate of discharge.
B. Diverter. Water pump is also called the guide wheel water guide wheel, installed in the work of the external wheel, above the diffuser-shaped flow channel, with the work out by the wheel flow direction. The deflector is typically used in a segmented centrifugal water pump. The water discharged from the work wheel 1 enters the deflector 2, where it is decelerated and then introduced into the return channel and finally introduced into the next working wheel. The water discharged from the last working wheel is introduced into the spiral channel through the deflector, and then flows into the diffuser to reduce the velocity again into the drain pipe.
Mine submersible pumps are commonly used centrifugal pumps. Centrifugal water pump is a working turbine, mine submersible pumps commonly used in D-type, DA-type and TSW-type multi-stage centrifugal pump; and the bottom of the water nest and mining areas are commonly used drainage B-type, BA type and BZ Type single-stage centrifugal pumps.
① D-type centrifugal pump
D-type pump is a single suction, multi-stage, sectional centrifugal pump. The stator part of the pump is mainly made up of bolts of the middle section, the rear section, the tail cover and the bearing frame, etc. The rotor section is mainly composed of a number of impellers mounted on the shaft and a balance plate. The entire rotor portion is supported on bearings at both ends of the shaft.
The front, middle and rear sections of the pump are bolted together, and the impeller and the water ring are sealed between the impeller and the small mouth ring. In order to improve the water absorption performance, the impeller inlet diameter of the first stage is larger, and the large mouth ring is correspondingly enlarged. Pump shaft through the front and rear parts of the seal by packing, packing gland composed of stuffing box to complete. The axial thrust of the pump is balanced with a balance disc.
D-type pump flow and head range is very large, this type of pump the maximum lift of up to l000m, flow rate of 450m3 / h, to meet the needs of mine drainage, and efficiency curve flat, industrial use area larger.
② B-type centrifugal pump
B-type pump is a single-suction, single-stage, cantilever centrifugal pump. The structure is shown in Figure 10-7. One end of the pump shaft is supported by a bearing in the carriage and the other end is cantilevered and the impeller is mounted at the cantilever end. The bearings can be lubricated with grease or grease. B-type pump small size, light weight, simple structure, reliable, easy to carry and maintenance overhaul. The flow range of 4.5 to 360 m3 / h, head of 8 to 98m. Commonly used in the discharge area, the bottom of the water nest water can be used as other auxiliary supply, drainage equipment.
(2) the main components
① work of the pump wheel.
Working round according to the number of suction can be divided into single-sided water and double-sided water. In the structure of the working wheel can be divided into closed and open. Centrifugal pumps in the work of closed-sided water into the water more. Open-type work wheels are mostly used for sewage pumps or sand pumps, the open leaves covered by the front cover of the pump casing, the front cover can be removed to remove the dirt and dirt on the leaf.
② other parts of the pump flow
The rotating work wheel discharges the water it sucks at a high speed to the surroundings. The immovable flow portion functions to collect, direct and reduce the velocity of the flow into the drain pipe or the next work wheel. In order to achieve higher efficiency of the pump, the flow of water should be avoided in the fixed flow part of the impact, eddy current, and gradually reduce the speed, variable pressure to static pressure.
A. Shell-type water pump shell, such as snails. The water flow from the working wheel into the spiral when the speed decreases, while the spiral section gradually expanded to pool all the water, the final water by the diffuser (take over the part) again after the rate of discharge.
B. Diverter. Water pump is also called the guide wheel water guide wheel, installed in the work of the external wheel, above the diffuser-shaped flow channel, with the work out by the wheel flow direction. The deflector is typically used in a segmented centrifugal water pump. The water discharged from the work wheel 1 enters the deflector 2, where it is decelerated and then introduced into the return channel and finally introduced into the next working wheel. The water discharged from the last working wheel is introduced into the spiral channel through the deflector, and then flows into the diffuser to reduce the velocity again into the drain pipe.
Manufacturers recommend: Shenlong stainless steel industrial submersible pumps
Keywords:Mine submersible pumps, type structure, centrifugal pumps
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