Wet Shotcrete Machine

  • Dawin Wet shotcrete machine with Continuous adjustable jet(CVT) and continuous adjustabe accelerator amount.
  • Accelerating Agent adding and control technology,the domestic famous brand metering pump,accurate measurement of atomizing jet and nozzle material makes the accelerating agent mixed with concretemixing.
  • Rebound degree is low,dry spray,concrete rebound degreee is 15%-50%,adopts the wet spray technology,resilient rate can be reduced to below 10%,effectivily saved the cost.

BRIEF INSTRUCTION

At present, shotcrete machine is divided into two kinds: wet shotcrete machine and dry shotcrete machine. Both of them are commonly used for pouring such thin-walled structures as tunnel lining, walls and ceilings, as well as the covering layer of steel structure.

Dry shotcrete machine mixes cement, sand and gravel in a dry and evenly state, a method to compress the air to deliver materials to the nozzle where they are mixed with pressure water for pouring; it must be operated by skilled personnel, and the particle size shall not be too large, however, as large amounts of cement are required and the jet velocity is large, which lead to severe dust pollution and rebound, its usage is thereby restricted.

Wet shotcrete machine delivers well mixed concrete to the nozzle through conveying and pumping, and compressed air is added at the outlet of delivery pump, which makes materials and air fully integrate with one another in the pipe, so that perfused materials become more even. In addition, accelerator is sprinkled on the nozzle for making materials solidify rapidly and reducing the rebound rate. Besides, its working efficiency is higher than dry shotcrete machine as the mixture of materials can be easily controlled.

Wet shotcrete machine is widely used for concrete spraying operation in places such as mine, tunnel, culvert, railway, hydro-power project, underground engineering and revetment.

Commutation System

Plc accurate control makes two oil circuit interflow,to greatly reduce commutation time and impact.

Split Piston

Use a hack-saw cut the piston in two vertical halves at right angles to the wrist pin with a grinding compound.

Power System

Electomotor adopts Yantai and Beide motor of Siemens;Diesel engine adpots Lovol and Volve Brand.

Main Oil Pump

The main oil pump apply German HAWE,Rexroth series and Japanese Kawasaki Series.

Accelerator Metering

Reciprocating piston diaphragm pump is of high temperature resistance, erosion resistance and abrasion resistance.

Hopper Device

The Hopper is capacity-increased,coupled with fence and equipped with vibration motor to meet concrete pumping.

Cooling System

It adopts dual-cooling system,  with air cooling and water cooling,not only for hot climate but also for cold climate.

Glassed Plate

Glass plates and cut loops are made of anti-wearing horniness alloy,they have long service lives.

Centralized lubricating

The lubricant will be injected to the main oil line by the plunger pump and distributed to each lubrication point.

Vedio of Wet Shotcrete Machine

concrete spraying pump p2

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Specification of  Wet Shotcrete machine

Item Unit DSPJ12 DSPJ08
Concrete pump Max. theoretic concrete spray  volume m³/h 12 8
Max. theoretic delivery pressure Mpa 10 7
Max. delivery frequency Times /min 16 16
Type of distribution valve S tube valve S tube valve
Main oil cylinder specification: cylinder dia./role dia.× stroke mm Φ140×800 Φ140×1200
Diameter of delivery cylinder mm Φ125 Φ100
Hopper Height mm 1100mm 1140mm
Diesel model 1004-4cp 1004-4 LOVOL
Rated power of diesel engine kw 56 56
Power system Revolution r/min 2000 2200
Type of Hydraulic oil circuit Open circuit Open circuit
Maximum oil pressure of main system Mpa 32 25
Hydraulic system Hydraulic oil tank volume L 200 200
Max. stone diameter mm ≤15

≤15 When spray

Pipeline inside diameter mm Φ80/Φ65/Φ50 Φ57
Other parameters Boundary dimension mm 4300×1500×1750 4500*1500*1550
Weight kg 2300 2300
Towing peed km/h ≤8 ≤8

Diagram