CN2361871Y

CN2361871Y - Roller plunger pump

Info

Publication number: CN2361871Y
Application number: CN 99232814
Authority: CN
Inventors: 赖邦钧
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-09
Filing date: 1999-02-09
Publication date: 2000-02-02
Anticipated expiration: 2009-02-09

Abstract

The utility model relates to a plunger pump, particularly a valve distributing roller plunger pump, wherein, the fluid end of which adopts a typical structure (a four-way body straight-way type), and the power end of which uses an assembly eccentric shaft to replace a common crank shaft, uses a rolling wheel to replace a common connecting rod, and uses a cross head with a special structure to replace a common cross head according to the principle of a crank shaft, a connecting rod and a cross head, which leads the transmission from the crank shaft to the cross head to be changed into the rolling of the rolling wheel from the slide in two holes of the connecting rod. The advantages of a crank shaft connecting rod plunger pump are preserved, and the utility model has the advantages that the volume of the pump is decreased, the weight of the pump is lightened, and the security is improved, which is fit for various using areas.

Description

Valve flow roller plunger pump

The utility model relates to a kind of valve flow roller plunger pump.

At present, its power end of valve flow plunger pump generally adopts crankshaft rod structure, and there is following defective in this kind structure: 1, owing to structural limitations, the volume of entire pump is too huge; 2, be force of sliding friction in the hole at connecting rod two ends when bent axle and connecting rod transferring power.

The purpose of this utility model is to provide a kind of volume little, safe valve flow roller plunger pump.

The purpose of this utility model realizes in the following manner: valve flow roller plunger pump, comprise the pump housing, the centre-driven device reaches around at least one group of aspirator all around, this aspirator is by plunger 5, plunger cavity 7 and intake tunnel 8, inlet valve 10, drain valve 14 is formed, it is equipped with the transmission device of being made up of crosshead 3 and roller 2 between the plunger 5 of the eccentric shaft 1 of centre-driven device and aspirator, crosshead 3 one ends have center hole 11, the other end has radially notch 12, crosshead 3 is loaded in the cover 9, and roller 2 usefulness bearing pins 4 are loaded on crosshead 3 radially on the notch 12.Roller 2 is long cylindrical roller bearings entad.

The utility model can be under the prerequisite that keeps crankshaft-link rod plunger pump major advantage, reduce the volume of pump, alleviate the weight of pump, improve Security, to adapt to various uses place, it makes existing bent axle change into the rolling of roller to transmission between crosshead by the slip in two holes of connecting rod, and roller promotes the crosshead moving linearly in rolling.It can be designed to radially, flat opposed, vertical multiple structural type such as opposed.

As when being designed to radially high-pressure service pump, removing and can be hydraulic drill, hydrofracture pick provides outside the high pressure water power, also can be emulsion pump and hydraulic cleaning pump less and uses.

Accompanying drawing has provided embodiment of the present utility model:

Fig. 1 is a structural representation of the present utility model.

With reference to the accompanying drawings the utility model is described in further detail:

With reference to Fig. 1, the present embodiment fluid end adopts four-way body straight-through type, inlet valve 10, drain valve 14 is a mitre velve, its power end structure is then according to bent axle, connecting rod, the principle of crosshead, replace bent axle commonly used with combined eccentricity axle 1, replace connecting rod commonly used with roller 2, crosshead 3 with special construction replaces crosshead commonly used, its concrete structure is: combined eccentricity axle 1 is loaded on the pump housing, can overlap wear-resistant sleeve 13 on its eccentric shaft part, be fixed in the sliding sleeve 9 on the pump housing crosshead 3 is housed, the upper end of this crosshead 3 is processed with endoporus 11, plunger 5 and stuffing box gland 6 can stretch into wherein, and satisfy crosshead 3 and the necessary guiding of plunger 5 sinking slips, seal length; The lower end of crosshead 3 is processed with radially straight trough 12, and roller 2 usefulness bearing pins 4 are loaded in the straight trough 12, and roller 2 adopts nonstandard, long cylinder bearing entad, and its endoporus is less, and the outer ring is thicker.

The utility model working procedure is as follows: when the eccentric shaft of center drive unit rotated from bottom to top, eccentric shaft 1 promotes crosshead 3 by roller 2 and plunger 5 moves upward, and working medium (for example water) is discharged by drain valve 14 from plunger cavity 7; When eccentric shaft rotates from the top down, intake pressure makes water pass through intake tunnel 8, inlet valve 10 enters in the plunger cavity 7, and promote plunger 5 and crosshead 3 moves downward, roller 2 is close on the eccentric shaft 1 eccentric shaft part circumferential surface, eccentric shaft rotates a circle, finish once, the process of draining, eccentric shaft 1 constantly rotates, advance, drain valve is constantly intake, draining, the current route enters from water intake as shown by arrows, flows in inlet valve 10 and the plunger cavity 7 through the cooling bath and the cooling hole of the pump housing, plunger 5 continuous to-and-fro motion, water are just constantly discharged from drain valve 14.

Claims

1. valve flow roller plunger pump, comprise the pump housing, the centre-driven device reaches around two group aspirators all around at least, this aspirator is by plunger [5], plunger cavity [7] and intake tunnel [8], inlet valve [10], drain valve [14] is formed, it is characterized in that: between the plunger [5] of the eccentric shaft [1] of centre-driven device and aspirator, the transmission device of being made up of crosshead [3] and roller [2] is housed, crosshead [3] one ends have center hole [11], the other end has radially notch [12], crosshead [3] is loaded in the cover [9], and roller [2] is loaded on crosshead [3] radially on the notch [12] with bearing pin [4].

2. valve flow roller plunger pump according to claim 1 is characterized in that: roller [2] is a long cylinder bearing entad.