High-efficiency wear-resistant sludge pump

Abstract

The invention discloses an effective wear resistant slurry pump comprising a casing (10), a transmission shaft (11), a transmission gear (12), a crank shaft (13), a connecting bar (14), a sliding block (15), an upper guide plate (16a), a lower guide plate (16b), a transmission bar (17), a piston rod (18), a piston (2), a cylinder sleeve (19) and a hydraulic cylinder device (8). The invention is characterized in that the piston (2) consists of a plurality of piston rings (21, 22, 23), a split combined sealing ring (3), a compensating spring (5) and a baffle plate (6), and the sealing ring (3) is arranged on the piston ring by a spring ring (4). The compensating spring (5) is arranged in a spring mounting hole (25) which is radially arranged on the piston ring to push the sealing ring (3), the piston ring is fixed on the piston rod by the baffle plate and a clamp nut, and when an outer circle of the sealing ring is worn out, and the split combined sealing ring compensates the abrasion under an action of the compensating spring with good sealing property.

Description

technical field [0001] The invention relates to a mud pump, especially a three-cylinder piston mud pump. Background technique [0002] Piston mud pump is mainly composed of casing, transmission shaft, transmission gear, crankshaft, connecting rod, slider, upper and lower guide plates, transmission rod, piston rod, piston, cylinder liner, and hydraulic cylinder device. The slider slides in the casing Installed in the upper and lower guide plates, one end of the slider is hinged with the crankshaft connecting rod, the crankshaft connecting rod drives the slider to reciprocate and slide, and the other end of the slider is connected to the piston rod through the transmission rod to drive the piston to reciprocate and slide to work in the cylinder liner. The shortcoming deficiency that this prior art exists is that the wear-resisting sealability of its piston is not good, and its piston sealing structure is to be provided with sealing cup on the notch table that offers on the pis...

AI Technical Summary

Problems solved by technology

The shortcoming deficiency that this prior art exists is that the wear-resisting sealability of its piston is not good, and its piston sealing structure is to be provided with sealing cup on the notch table that offers on the piston and is fixedly connected to form by pressing plate, and the sealing performance of piston depends on completely. The leather cup is sealed. The material of the cup is rubber. After the cup is worn, not only can it not be compensated, but also the cup is easily deformed during use. When the cup is deformed and worn, the sealing between the piston and the cylinder liner will be destroyed, and the piston will There is a gap between the cylinder and the cylinder liner, and the working flow and pressure of the pump are reduced

In addition, mud and sand in the cylinder liner can easily enter the end surface of the cup seal to accelerate the wear of the cup. Therefore, it is necessary to repair the piston seal frequently and replace the cup. The maintenance workload is heavy, time-consuming and laborious, and affects the work.

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