Mud pump

Mud pump refers to a mechanical device that delivers flushing fluid such as mud or water to the borehole during the drilling process. Mud pump is an important component of drilling equipment

In commonly used positive circulation drilling, the surface flushing medium - water, mud, or polymer flushing fluid - is sent directly to the bottom of the drill bit through high-pressure hoses, water, and drill string holes under pressure, in order to cool the drill bit, transport the cut rock cuttings to the surfaceThe commonly used mud pump is a piston or plunger type, which is driven by a power machine to rotate the crankshaft of the pump. The crankshaft then drives the piston or plunger to perform reciprocating motion in the pump cylinder through the crosshead. Under the alternating action of the suction and discharge valves, the purpose of compressing and circulating flushing fluid is achieved

According to the number of cylinders

If classified by the number of cylinders of the pump, there are various types such as single cylinder, double cylinder, three cylinder, and five cylinder.

Performance

The two main parameters of mud pump performance are displacement and pressure.

Displacement

The displacement is calculated by discharging several liters per minute, which is related to the drilling diameter and the required flushing fluid velocity from the bottom of the hole. That is, the larger the hole diameter, the greater the required displacement.

. The upflow speed of the flushing fluid is required to timely flush the rock cuttings and powder cut by the drill bit off the bottom of the hole and carry them to the surface. During geological core drilling, the upward velocity is generally around 0.4-1.0 meters per minute

Pressure

The pressure of the pump depends on the depth of the borehole, the resistance of the channel through which the flushing fluid passes, and the properties of the flushing fluid being transported.

. The deeper the drilling, the greater the pipeline resistance and the higher the required pressureAs the diameter of the borehole changes, it is required that the pump displacement can also be adjusted at any time. A gearbox is installed in the pump mechanism or its speed is adjusted by a hydraulic motor to achieve the purpose of changing the displacement. In order to accurately grasp the changes in pump pressure and displacement, a flow meter and pressure gauge should be installed on the mud pump, so that drilling personnel can understand the operation of the pump at any time. At the same time, the condition inside the hole can be judged by pressure changes to prevent accidents inside the hole

Product Features

1. Can transport high viscosity

; Lt; 10000PaS and suspension containing particles2. The conveying liquid flow is stable, without overflow, pulsation, stirring, or shearing of the slurry3. The discharge pressure is independent of the speed, and a low flow rate can maintain a high discharge pressure4. The flow rate is directly proportional to the speed, and flow regulation can be achieved through a variable speed mechanism or a speed regulating motor5. Self suction, liquid can be directly aspirated without the need for a bottom valve6. The pump can be reversed, and the direction of liquid flow is changed by the rotation direction of the pump, suitable for situations where pipelines need to be flushed in the reverse direction7. Smooth operation, low vibration and noise8. Simple structure and convenient disassembly and maintenanceThe I-1B concentrated slurry pump is widely used in chemical, pharmaceutical, brewing, papermaking, food and other unitsBefore starting the mud pump, please check whether the inlet and outlet pipes are blocked, whether butter is added to the front and rear bearings, and whether the packing is full. When the mud pump is working, it should be equipped with a high-pressure clear water pump to deliver water that is greater than the pressure of the mud pump to the anti leakage packing, and protect the packing. The flushing pump should not be turned off during the operation of the mud pump, otherwise it will cause wear on the sealing part. The reasonable gap between the impeller and the protective plate has a significant impact on the service life of the mud pump. If the clearance is unreasonable, the pump will produce vibration and noise during operation, and the flow components will be quickly damaged. Therefore, when replacing the impeller, attention should be paid to ensuring that the clearance meets the requirements of the drawing. Gap adjustment can be done through the adjustment screws on the rear bearing body. The allowable suction head of a mud pump is measured when transporting clean water, and the influence of mud on suction capacity should be considered when pumping mud

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