Vertical single eccentric shaft radial equipartition multi-connection reciprocating pump

Abstract

The invention relates to a vertical single eccentric shaft radial even distribution multiplex reciprocating pump which comprises a pump body, wherein, a plurality of plunger piston slots are evenly distributed on the pump body along circumferential direction, plunger pistons can be arranged in the plunger piston slots along radial direction in a sliding way, and a rotation body driving the plunger piston to rotate is arranged in the pump cavity of the pump body; the rotation body comprises an eccentric wheel rotating eccentrically and a guide sleeve sheathed outside the eccentric wheel by a rolling bearing; the rolling bearing comprises an inner ring, roll balls and an outer ring, wherein, the inner ring is fixed on the eccentric wheel, the outer ring is fixed with a bearing sleeve fixedly connected with the guide sleeve, and a rocking slot is formed between the inner wall of the guide sleeve and the outer wall of the bearing sleeve; the head of the plunger piston is extended into therocking slot, a rotary pin penetrates through the head of the plunger piston along the pump body in radial direction and can be rotatably connected with the head of the plunger piston in axial direction, the rotary pin can be clamped in the rocking slot in a sliding way, and both sides of the rotary pin come in contact with the inner-wall lines of the rocking slot.

Description

technical field [0001] The invention relates to a reciprocating pump, in particular to a reciprocating pump using an eccentric wheel reciprocating mechanism. Background technique [0002] The function of the reciprocating mechanism in the reciprocating pump is to provide reciprocating motion to the plunger or piston, so that it can periodically change the volume to achieve the function of conveying the medium. There are three main types of reciprocating structures in traditional reciprocating pumps, such as: figure 1 a. figure 1 b. figure 1 as shown in c, where figure 1 a includes crankshaft 1a, connecting rod 3a, crosshead 6a, crosshead pin 5a, bearing bush 2a, bearing 4a, etc. Rotational motion is converted into reciprocating motion of the crosshead through the crankshaft and connecting rod. This structure occupies a large space, wastes materials, has large pulsation and high noise. figure 1 b mainly includes plunger 1b, nut 2b, ball seat 3b, pressure ring 4b, return ...

AI Technical Summary

Problems solved by technology

In this structure, the spring is subject to alternating loads, its life is short, and its elasticity is limited. It is only suitable for gap sealing and not packing sealing. At the same time, it is difficult to lubricate and cool between the eccentric wheel and the bearing bush.

Images