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Installation steps and precautions for pump body of self-con

Article provenance：Hai Rui ZhonglianPopularity：Publication time：2020-03-24 09:48

Installation steps and precautions for water pump body of self-control self-priming diesel engine

1. Hoisting of self-control self-priming clean water pump

For small pumps, 24 people can be carried to the base. For medium pumps, you can use trailers and rollers to roll on slopes for transportation and installation. For large and medium-sized water pumps, the lifting can be carried out with herringbone lifting frame, and sometimes with single wood lifting rod and other pulley blocks. In addition, you can also use the original

Some lifting machines (such as bridge crane, electric hoist, etc.) lift the pump directly to the foundation. When hoisting, the sling shall be tied to the lower part of the self-control self-priming pump body, not to the shaft or bearing.

2. Measurement and adjustment of water pump body of self-control self-priming diesel engine

The measurement and adjustment of the pump body includes three aspects: alignment, raising and leveling.

(1) The alignment is to find the vertical and horizontal center lines of the self-control self-priming clean water pump body. The longitudinal center line of the self-control self-priming clean water pump body shall be subject to the center line of the pump shaft, and the transverse center line shall be subject to the center line of the water outlet pipe. During the center adjustment, it is necessary to measure and adjust the center line of the equipment (or the center line of the foundation and wall column), so that the verticality and horizontal center line of the self-control self-priming clean water pump body meet the requirements of the drawings, and it is well connected with other equipment. According to the drawing size, the allowable deviation of vertical and horizontal center lines of self-control self-priming clean water pump body is within 5mm.

(2) The elevation of the standard high pump is based on the centerline of the pump shaft. When looking for altitude, we usually use level to measure. During the measurement, the rod is placed on the reference point in the workshop, the height of the mirror center of the instrument is measured, then the rod is moved to the journal, the distance from the shaft surface to the mirror center is measured, and the pump shaft center line is calculated by the formula. Height.

Elevation of pump shaft center = (height of Mirror Center, distance from mirror center to mirror center, pump shaft diameter) / 2

The elevation adjustment is also completed by the washer between the leg of the self-priming clean water pump body and the base. The deviation of pump shaft center elevation is ± 10 mm.

(3) After finding the center line position and height of self-priming pump body, start to adjust the height of self-control self-priming pump body. First, a square instrument with an age of 0.05m m/m is used to control the self-priming pump. Measurements are made on the front and rear end journals of the body. When adjusting the level, the thin iron sheet can be adjusted between the self-control self-priming pump body and the base. The allowable horizontal deviation of self-control self-priming pump is usually 0.3-0.5m m/m.

After finding the position, elevation and elevation of the center line of the self-control self-priming pump body, tighten the connecting bolts between the self-control self-priming pump body and the base, and then check the liquid level of the self-control self-priming pump body by the liquid level meter. Tel. If there is no change, the motor can be installed.

Motor installation:

The main task of installing the motor is to adjust the center line of the motor shaft and the centrifugal pump shaft to a straight line. The shaft of multistage centrifugal pump and motor in bedroom is connected with various couplings, so the installation of motor is mainly the alignment of couplings. In the assembly of couplers, specific correction methods will be introduced.

There must be axial clearance between the two half couplings of the motor to prevent the movement of the horizontal multistage centrifugal pump shaft from being transmitted to the motor shaft, or to prevent the movement of the motor axial motor shaft. Therefore, the gap must have a certain size, generally larger than the sum of the centrifugal pump and motor shaft. Generally, there is such a clearance regulation on the drawing. If there is no such regulation on the drawing, it can be adjusted with reference to the following figures: small centrifugal pump 2 ~ 4mm, medium centrifugal pump 4 ~ 5mm, large centrifugal pump 4 ~ 8mm.

Secondary grouting:

After the motor is installed, secondary grouting can be carried out. After the cement mortar has hardened during the secondary grouting, the center of the coupling shall be recalibrated to see if there is any change and recorded.

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