Reverse pressure oil lubrication power reciprocating pump

Abstract

The invention discloses a reverse pressure oil lubrication power reciprocating pump, comprising a power end, wherein, the power end is provide with a case (1) provided with a plurality of chutes (15), a bent axle (2), cross heads (7), cross pins (6), cross pin collars (5), connecting bars (4) and bushes(3) with the amount being equal to the chutes (15); the reciprocating pump is characterized in that: the housing (1) is provided with a through hole (13), two sides of the external diameters of the cross heads (7) are both provided with axial grooves(14), the through hole (13) is perpendicular to the axial grooves(14), the through hole (13) is communicated with the axial grooves(14) in the sliding process of the cross heads (7), the cross pins (6) are provided with at least a radial forth oil hole (12). The reciprocating pump facilitates pressure oil lubrication on oil sites between the cross heads and the chutes of the case, has good lubrication effect and can improve the reliability of operation, besides, the strength of the bent axle is not reduced, and the processing of the bent axle is labor-saving and time-saving.

Description

technical field [0001] The invention relates to the technical field of motorized reciprocating pumps, in particular to a motorized reciprocating pump which is suitable for high power, requires continuous operation, and must be lubricated by forced pressure oil. Background technique [0002] At present, a general-purpose motorized reciprocating pump is composed of a prime mover, a transmission device, a power end, and a hydraulic end. sports. Such as figure 1 As shown, it includes a casing 101 with multiple slideways, a crankshaft 102 with oil holes, and crossheads 107, crosshead pins 106, crosshead pin sleeves 105, connecting rods 104 and bearing bushes 103 corresponding to the number of slideways. , the crosshead pin sleeve 105, the connecting rod 104 and the bearing bush 103 are all provided with oil holes. The crankshaft is supported and fixed on the casing by roller bearings at both ends, and rotates relative to the casing. The crosshead is slidingly fitted in the sli...

AI Technical Summary

Problems solved by technology

[0004] 1. Since there is no pressure oil channel between the crosshead and the slideway of the casing, pressure oil lubrication cannot be performed, and the lubrication point between the crosshead and the slideway of the casing needs to provide a large surface area for lubrication. Use the crosshead pin and The oil flowing out from the matching gap of the crosshead pin bushing and the oil splashed in the casing are used for lubrication, so the lubrication effect is very poor, which reduces the reliability of operation

[0005] 2. Since the oil hole must be processed in the crankshaft, the strength of the crankshaft is reduced, and each crank journal on the crankshaft is eccentric, and the processing of the oil hole is labor-intensive and time-consuming

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