Concrete Grout Cement Mortar Spraying

The main technical parameters

Pump use

     BW series single cylinder grouting pump is a horizontal single cylinder reciprocating single acting piston pump, which consists of two specifications: BW50-3 and BW60-8. It is mainly used for grouting construction of roads, bridges, dams, national defense, mining and other construction projects; it can also be used for mortar injection expansion of prestressed component engineering; pulverized coal slurry transportation of thermal power plants; vertical and horizontal transportation of mortar in construction engineering In the chemical industry, it is used to transport slurry raw materials (paste, coating), magnetic materials and other media; maintenance, repair and maintenance of sand land, blast furnace, cement pavement, highway, etc., is WSB piston grouting pump The improved product has the advantages of compact structure, good sealing, high pressure, convenient piston replacement, simple assembly and maintenance.

The grouting pump can pump the mortar, the sand should be sieved, and the maximum particle size is no more than 5mm. The quality of sand with a grain size of 1mm or less accounts for more than 60% of the total sand volume. Stones and other sundries (such as iron nails, grasses, etc.) must not be mixed in the grouting. It should be a homogeneous mortar with uniform mixing. Sand and hard block, the consistency value is not less than 8cm, and the consistency is 300g.

Pump structure and principle

BW series single cylinder grouting pump is mainly composed of motor, gearbox, pump head, frame, shroud, V-belt drive mechanism (see Figure 1). The gearbox is a closed casing and is lubricated by splash lubrication. Each of the moving parts, a pair of meshing gears, can transmit the rotary motion of the motor to the crankshaft, and push the connecting rod and the crosshead to reciprocate the piston. BW50-3 is a diesel engine connecting rod, BW60-5 is a bearing type connecting rod. The bearing type connecting rod has the characteristics of low noise, flexible rotation, wear resistance and durability. At the same time, it is equipped with a clutch operating mechanism, which is convenient for power switching and stable and reliable transmission.

The pump head is mainly composed of a connecting flange, a cylinder sleeve, a piston, a tie rod, a screw rod, a ball cage, a gas chamber, a pressure gauge and the like, and is a bottom-in and a-out type, and the piston is driven to reciprocate by a pull rod to control the steel ball and the ball. The opening and closing of the cage seat is carried out for suction and discharge operations. The piston is mounted on the piston seat, and the M24×l.5 lock nut is pressed by the piston pressure pad. When the piston is worn, it can be disassembled with a special wrench, which is convenient to install, saves time and labor, and is equipped with a sluice valve on the air chamber. The tube and pressure gauge device. An electric contact pressure device with automatic control is also available. When the air chamber pressure exceeds the rated working pressure, the current of the injection circuit is cut off through the control circuit, so that the motor automatically stops running.