Concrete Spray Type: Dry Spray/ Wet Spray

Dry spray is to dry the aggregate, cement and quick-setting agent dry and evenly in a certain proportion, and then put it into the jet machine. The compressed air is used to press the dry aggregate into the nozzle in a suspended state in the hose, and then the high pressure is applied at the nozzle. The water is mixed and sprayed onto the rock surface at a higher speed. The mechanical structure of dry spray is relatively simple, mechanical cleaning and fault handling are easy. The disadvantage is that it is easy to produce large dust and the rebound is large! Wet spray is to mix the aggregate, cement and water according to the design proportions uniformly, and send it to the nozzle with a wet jet machine, and then spray it after adding the accelerator on the nozzle. The strength of wet shotcrete is large, and the amount of dust during the spraying process is small and the rebound is small.

At present, dry spray construction technology is used for the construction of the project. The main reasons are:

A wet sprayer is expensive

Second, the wet spraying machine has a higher operating cost (the price of the liquid accelerator is more expensive and the price of the commercial concrete is higher)

Three wet jets are closer (20-30 meters)

However, with the increasing problem of haze and the strict requirements for dust on the construction site, the amount of dust on traditional dry-blowers is large and has been gradually banned by regulatory authorities around the country. However, the high cost of wet spraying and the short spraying distance cause the slow promotion of wet spraying. So how can we combine dry spray and wet spray to achieve dry spray dust spray?

Let's take a look at the KCPZ Dust Spraying Machine of Henan Coal Science Institute. It is a new generation of environment-friendly spraying machine, a new type of concrete spraying machine that combines the advantages of wet spraying and dry spraying. Its advent marks the arrival of the era of dustless dry spraying!

KCPZ dust sprayer

Performance characteristics:

1, has two inventions and utility model patents, the machine body and nozzle break the traditional limitations

2. The newest type of environmentally-friendly concrete injection equipment is more than 90% more effective than conventional jets to reduce environmental pollution and fully protect the physical and mental health of construction workers.

3, the new nozzle device, mixing more evenly, rebound greatly reduced.

Innovation:

1, the upper and lower overflow and rotor friction plate leakage collection and export devices, eliminate dust emissions.

2, New dust removal technology and filter material, good filtering effect and long service life.

3, drawer type ash container, easy to clean.

4, multi-layer annular water sprinkler system to ensure uniform mixing.

Production capacity

5-7? /h

Rotor speed

11r/min

Delivery distance

Horizontal 100m Vertical 30m

main motor power

5.5/7.5kw

Inner diameter of aggregate

≤20mm

Auxiliary motor power

1.1kw

Delivery tube inner diameter

51mm

Main motor speed

960r/min

Fixed work stress

0.5mpa

Accelerator hopper capacity

25kg (optional)

Air consumption

≤8? /h

Voltage level

380V

Feed height

1.1m

Machine gauge

600(900)mm

Comprehensive rebound

≤15%

Dimensions

2150*900*1470

Machine dust

≤15mg/?

Total Weight

700kg