Centrifugal pump of the anchor bolt hole grouting technology requirements

the anchor hole centrifugal pump, centrifugal pump anchor bolt technology requirements

a, in the centrifugal pump the anchor hole grouting work, centrifugal pump anchor bolt technology requirements shall ensure that the bolts in centrifugal pump and the pump or horizontal centrifugal pump group equipment installation dimensions are consistent, and ensure the installation base surface horizontal windage & plusmn; 2 mm/m.

2, tamping centrifugal pump the anchor hole in the concrete, shall not be made all kinds of centrifugal pump anchor bolt skewed, or a set of pump and pump equipment

produce displacement.

3, to meet the design concrete strength since more than 75%, the water pump or water pump set can be fixed after installation, equipment leveling and alignment and second grouting layer grouting work. The height of the grouting layer for 30 - commonly 70 mm.

4, secondary grouting of foundation surface must wash with water and dry earn Man wet. When the environment temperature is below freezing, antifreezing measures should be taken.

5, multistage centrifugal pump, the anchor of the reserved hole and second grouting layer grouting materials is fine stone concrete, its label

should be higher than foundation concrete grade level.

6, when the environment temperature is less than 5 & deg; C, in the second grouting layer during curing, insulation or anti-freezing measures should be taken.

7, ratio of ordinary concrete is recommended as follows, Kg/per cubic meter)

label cement 400 (250 325 #) Sand pebble 607 1225 water 200

351 ( 425 #) 6631225200

label cement 465 (300 325 #) Sand pebble 585 1000 water 200

400 ( 425 #) 6501200200

note: 1, gravel granularity for 5 - 15 mm, sand grain size of 0. 40. 5 mm. Should be 10 - after casting 12 hours to maintenance. Curing time, Portland cement of not less than 7 days and nights, alumina cement is not less than 3 days and nights

eight, centrifugal pump anchor bolt tightening torque and axial tension parameter values.

usually vertical centrifugal pump products do not need to reserve a hole grouting fixed can only need to use bolts. Self-priming pump is a centrifugal pump type product of a kind of such products, all need to reserve the anchor bolt hole.

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