BW320 Grouting Pump

The BW-320 mud pump is a new product developed in recent years for drilling techniques such as hydraulic impact drilling and screw drilling in geological exploration. It can provide flushing fluid (mud or water) to the borehole during core drilling, allowing it to circulate within the borehole to carry rock debris back to the ground surface, keep the bottom of the borehole clean, and cool and lubricate the drill bit and drilling tools to protect the borehole wall from collapse. It can also serve as a power source to assist drilling with an impactor (or screw or worm gear). It is one of the important modern drilling equipment.

The BW-320 mud pump is particularly suitable for grouting operations on various soft foundations. It is a three cylinder single acting reciprocating piston pump  with four speed gears. It can mainly be used for hydraulic impact drilling within a hole depth of 1000 meters, screw drilling within 15000 meters, turbine drilling, and ordinary rock core drilling within a hole depth of 2500 meters. The pump adopts an integrated design of crankcase and gearbox, so it not only has reliable performance, long service life of vulnerable parts, but also has small volume and light weight, good decomposition ability, and is easy to relocate in mountainous areas. It is an ideal equipment for geological exploration, and can also be used for various purposes such as engineering construction drilling, sugar making, wine making embankment grouting, etc.

echnical Parameter

Specification and model	BW320-Z
type	Horizontal three cylinder single acting reciprocating piston pump
trip（mm）	110
Cylinder diameter（mm）	80
pump speed（r/min）	214	153	109	78
flow（L/min）	320	230	165	118
pressure（MPa）	5	6	8	10
volumetric efficiency（%）	90
overall efficiency（%）	78
Required power（KW）	30
Large pulley pitch diameter（mm）	495(C型×5槽)
Spindle input speed（r/min）	535
Water absorption height（m）	2.5
Inlet Size（mm）	76
Discharge pipe diameter（mm）	32
External dimensions（mm）	1905×1100×1200
weight（Kg）	1000

Use and Maintenance of BW-320 Mud Pump

The service life of a mud pump is not only related to the design and manufacturing of the pump, but also to the operating conditions, operation, and maintenance of the pump. Therefore, users of this pump must strictly follow this manual for maintenance and use.

Installation of mud pump:

This pump must be installed on a stable foundation and fixed with anchor screws. When installing a standalone pump, it is also necessary to use the measuring line method to check the parallelism of the prime mover (or intermediate shaft) and the mud pump pulley, as well as the position of the transmission belt, so that they are all in the same plane, and then tighten the anchor screws.

The installation position of the pump should ensure the safety of the driller's work, convenient operation, and a place where the measuring instruments are easy for the driller to observe. It is also necessary to set up water tanks, return tanks, and sand discharge devices according to the site, and shorten the suction pipeline and suction height as much as possible.

Preparation before starting:

After long-term shutdown or reinstallation of the mud pump, the following preparations must be made before starting it again.

1. Check and flush the inlet pipe and filter valve. The inlet hole should not be blocked by dirt, and the valve should open and close freely. The hose joint should be tightened with a hose clamp to ensure that it is sealed without air leakage. The water filter should sink 0.3-0.5 meters below the flushing liquid level, but the distance from the bottom and wall of the water tank should be greater than 0.5 meters. And check that the water absorption height should not exceed 2.5m (referring to the relative reduction of water absorption height when the medium is clean water and thick mud). The length of the suction pipe shall not exceed 5m.

2. Check the tightness of all components and parts, especially the connection between the plunger, crosshead, and pull rod.

3. Check if the condition of the inlet and outlet valves and valve seats is good, especially if there is no small leakage or looseness between the inlet and outlet valve seats and the pump head valve seat holes.

4. Check the composition of the spring bracket of the inlet valve, whether the stop spring is in the pump head groove, and whether it is firmly fixed on the spring bracket.

5. Check the clearance between the connecting rod bearing and the crosshead sliding sleeve, and check if there is any skewed or stuck phenomenon in the connecting rod.

6. Check whether the bearing, pump body (upper and lower layers), and all oil cups are filled with sufficient lubricating oil according to the designated brand.

7. Check whether the safety valve and pressure gauge are flexible and reliable.

8. Check if the clutch and transmission machinery are in good condition.

Rotate the large pulley several times by hand to observe if it rotates flexibly and if there are any other foreign objects inside, and adjust the tension of the V-belt.

10. Check whether the tightness between the plunger and the sealing ring is appropriate. It should not be too loose to cause leakage, nor should it be too tight to accelerate wear.

11. Check the sealing condition of the drainage pipeline and other seals. If any air leakage is found, it should be promptly plugged. And discharge the flushing liquid from the air chamber to ensure that the air chamber is filled with gas.

Close the three-way drainage pipeline and open the return water pipeline. Fill the inlet pipe with clean water and connect it to the test machine water tank.