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 Fine stone pump

Fine stone pump

Classification: fine concrete pump Order hotline: 15131066788

Introduction and parameters

Introduction of fine stone pump products:

    Fine stone pump A number of concrete pump technology, and has been patented, is the domestic fine stone concrete conveying equipment. In the construction of fine stone concrete or mortar backfill in the floor heating project, the use of fine concrete pump is not easy to destroy the ground heating pipeline compared with the construction method of the lift, and can greatly improve the construction efficiency and reduce the labor intensity of the workers.

The characteristics and scope of the fine stone pump are as follows:

1., the machine is specially designed for the construction of the fine ground concrete, which is suitable for the large area and high efficiency construction of the fine concrete filled layer or mortar filling layer in the floor heating project, and also for the transportation of fine stone concrete or mortar in the construction works.
2. after installing the spray attachment, the machine can also be used as a shotcrete pump for spraying and throwing concrete, mortar, refractories and greening soil.
Fine stone concrete pump features:
3. the advanced s pipe valve reversing can meet the transportation of fine aggregate concrete.
4. the eyeglass plate and cutting ring are made of high hardness and wear-resistant alloy material with longer life.
5. the outlet pressure is high, which can meet the transportation requirements of high-rise buildings and long distance construction.
6. hydraulic oil cooling adopts advanced forced air cooling heat dissipation system without using water source and easy to use.
7., it has anti pump function to reduce pipeline blockage.
8. equipped with automatic centralized lubrication system to ensure service life of rotating parts.
9. the electrical part is controlled by PLc and has control characteristics.
10. electric box is equipped with wired remote control handle for easy operation.
Specification for construction of fine stone pump:

Fine aggregate concrete

1, the role of fine aggregate concrete in pumping process, the pumping pressure of concrete is transmitted by liquid phase material. Liquid substances carry solid substances together to move in order to complete the pumping. Cement has two functions, one is cementation, which keeps concrete in the state of solid matter being surrounded by liquid phase in pumping.

Two. Requirements for cement

1., the frictional resistance of the concrete part of the concrete pump, the conveying pipe and the concrete will be reduced and the flow will be good.

2, the influence of cement varieties on the pumping ability of concrete, cement should have good water retention property, so that concrete is not easy to bleeding during pumping. Ordinary portland cement and pozzolanic cement have better water holding capacity, while slag cement has poor water retention. If it is used to mix concrete with pumping, it is necessary to increase cement dosage, increase sand percentage or add part of fly ash, and adopt lower slump. When the fly ash cement is used, the concrete has better fluidity, but the early bleeding is larger. It is better to use lower slump and pump as much as possible.

3, cement dosage cement dosage should be appropriate. If the cement dosage is insufficient, the pump volume efficiency will decrease, the conveying resistance will increase obviously, and the concrete has poor water retention, easy to bleeding, segregation and blockage. If the cement dosage is too large, the viscosity of the concrete will be too large and the transportation resistance will increase, but the volume efficiency of the pump will not change much. Compared with gravel aggregate with the same size and gradation, the amount of cement used in crushed stone concrete is larger. For fine aggregate, artificial crushing sand is more commonly used than natural sand. The smaller the pipe diameter and the longer the pipeline, the higher the mobility, lubricity and water retention of the concrete, so the cement consumption should be increased. If the aggregate gradation is appropriate, the larger aggregate size is, the smaller the cement dosage will be. However, when the aggregate size exceeds 30 mm, the diameter of the aggregate will destroy the continuity of the concrete, and it is difficult for the cement slurry to fully contain the aggregates, so the cement dosage can not be reduced. Fine aggregate with a particle size less than 0.2 mm also acts as a cement. But these fines should be in a certain proportion. If the content is insufficient or the average particle size is too small, the cement consumption will increase. If the lightweight aggregate concrete is pumped, the cement dosage should be increased appropriately. This is because the lightweight porous aggregate has the characteristics of water absorption and decompression under high pressure, which makes the concrete hard and easy to segregate when pumping. Therefore, there should be more cement slurry in lightweight aggregate concrete, and the cement dosage should not be less than 340kg/m 3.
Fine stone pump technical parameters:
Distinguish Specifications Specifications
Model BS-20 fine aggregate concrete pump BS-25 fine aggregate concrete pump
Distribution valve form S tube valve type S tube valve type
Initiative Motor 380V, 30Kw Motor 380V, 37Kw
Theoretical throughput 15-20mh 20-25m/h
Theoretical transport distance Vertical 150m, horizontal 450m Vertical 200m, horizontal 600m
Working pressure 8Mpa 12Mpa
Tank volume 150L 160L
Inner diameter of conveying pipe 76mm 80mm
Larger aggregate diameter 5-15mm 5-20mm
Hopper volume 0.4m3 0.65m3
Specifications 3700x1800 x1600mm 3850 x 1800 x 1650mm
weight About 1560kg About 1600kg
 
 

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