CN2756861Y

CN2756861Y - Radial multiple cylinder column, piston pump triangle layout structure

Info

Publication number: CN2756861Y
Application number: CN 200420108995
Authority: CN
Inventors: 沈培
Original assignee: SUZHOU BLACK CAT (GROUP) CO Ltd
Current assignee: SUZHOU BLACK CAT (GROUP) CO Ltd
Priority date: 2004-11-19
Filing date: 2004-11-19
Publication date: 2006-02-08
Anticipated expiration: 2014-11-19

Abstract

The utility model relates to a radial multiple cylinder column, piston pump triangle layout structure, which is formed from three sets or more than three sets of cylinder bodies, plungers, or pistons, and connecting rods, which share one crankshaft. The utility model is characterized in that the cylinder bodies, and the plungers or pistons are in vertically parallel with each other, the center points of the cylinder bodies, and the center points of the plungers or pistons are arranged in two lines, and the center points of three sets of adjacent cylinder bodies, and the center points of the plungers or the pistons form an equilateral triangle. The axis line of the gyration centre of the crankshaft is deflected relatively to the center points of the cylinder bodies, and the center points of the plungers or the pistons, and is positioned on the vertical projection of the midpoint of the height of the triangle. The utility model can reduce the horizontal dimensions of positions relative to a pump head and a transmission case by one third, therefore the consumable material of the pump head, the transmission case, a crank, and the connecting rods, and the fabricating cost of the utility model are reduced.

Description

Radial multi-cylinder post, reciprocating pump triangular arrangement structure

Technical field

The utility model relates to post, piston pump structure, is specifically related to the above post of three cylinders radially or three cylinders, the plunger or the piston triangular arrangement structure of reciprocating pump.

Background technique

Radial multi-cylinder post, the application of reciprocating pump aspect product or equipment are very wide, and wherein relatively typical application is a jetting machine, and jetting machine mainly is made of spray gun and post, piston pump two-part.In order to obtain high-pressure water, often need multi-cylinder post, piston are effectively made up, and drive by connecting rod.Traditional radially structural type of three cylinder posts, reciprocating pump mainly contains following three characteristics:

1, three cylinder arrays are parallel, and the cylinder body center is arranged on the same straight line side by side, see shown in Figure 2;

2, type of belt drive adopts conventional connecting rod, sees shown in Figure 1ly, and the phase difference that moves between adjacent post, the piston is 120 °;

3, post, piston central motion track axis and crank up central axis are in same plane, and ram travel S is 2 times of crank radius r, and promptly S=2r sees shown in Figure 3.

The subject matter that exists on above-mentioned radially three cylinder posts, the piston pump structure is, after post, the piston diameter of facility are determined, the transverse dimension A (see figure 1) of pump head and transmission case region of interest will be limited by the radial dimension of post, piston seal and correlated parts, but not depend on the technical requirements of bent axle one connecting rod pair, also reach the connecting rod width requirement.With regard to concrete size, the former will be far longer than the latter usually, thereby has increased the transverse dimension of pump head and transmission case region of interest and unnecessary consumptive material; In addition, because the increase of transmission case transverse dimension, caused the increase of crankshaft length, so that must increase the radial dimension of bent axle and connecting rod to satisfy requirement of strength, thereby increased the consumptive material of bent axle and connecting rod, radial multi-cylinder post, reciprocating pump global design are not made under reasonable, economic optimal conditions.

Summary of the invention

The utility model provides a kind of radial multi-cylinder post, reciprocating pump triangular arrangement structure, its objective is the transverse dimension that will dwindle pump head and transmission case region of interest, thereby reduces pump head, transmission case, the consumptive material of crankshaft-and-connecting-rod and the manufacture cost of complete machine.

For achieving the above object, the technical solution adopted in the utility model is: a kind of radial multi-cylinder post, reciprocating pump triangular arrangement structure, cylinder body, plunger or piston and the shared bent axle of connecting rod by three covers or the above quantity of three covers form, each cylinder body and plunger or piston are in upright arrangement each other parallel, the central point of cylinder body and plunger or piston is arranged into two row, and the central point of adjacent three cover cylinder bodies and plunger or piston constitutes equilateral triangle; The relative cylinder body of gyration center axis of described bent axle and the biasing of the central point of plunger or piston, and be positioned on the middle point vertical projection position of triangle form height.

Related content in the technique scheme is explained as follows:

1, about the explanation of multi-cylinder quantity, the utility model refers to it is the combination of three cylinders or the above quantity of three cylinders, and when three cylinders, three cylinder central points constitute equilateral triangle; When three cylinders were above, adjacent three cylinder central points constituted equilateral triangle.

2, this programme is applicable to plunger pump or reciprocating pump.

The utility model working principle is: to achieve these goals, traditional three cylinders and the multi-cylinder post more than three cylinders, reciprocating pump cylinder body and post, piston are collinear arranging on pump head and transmission case change equilateral triangle into and arrange, gyration center axis with bent axle biases on the middle point vertical projection position of triangle form height simultaneously, dwindle the transverse dimension of pump head and transmission case region of interest with this, reduce pump head, transmission case, the consumptive material of crankshaft-and-connecting-rod and the manufacture cost of complete machine, the optimum organization of implementation structure, performance and Economy.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1, owing to being collinear, traditional three cylinder posts, piston arrange, radial dimension restriction because of Sealing and correlated parts, the smallest lateral dimension of its pump head and transmission case region of interest is A, see shown in Figure 1, and the utility model changes triangle into arrange after, the smallest lateral dimension of its pump head and transmission case region of interest is B, sees shown in Figure 4.Therefore, when adopting equilateral triangle to arrange, the width dimensions of the utility model pump head and transmission case region of interest can be reduced to 2/3rds (reducing 1/3rd), the i.e. B=2A/3 that tradition is arranged in theory.

2, because the transverse dimension of pump head and transmission case region of interest dwindles, the axial dimension of bent axle is corresponding to be reduced.In addition, because the axial dimension of bent axle reduces, the deflection of crankshaft force-bearing situation improves, so the radial dimension of bent axle also can reduce.

3, the utility model is under the condition of identical crank radius r and length of connecting rod m, its plunger center stroke h will be bigger than the stroke S of traditional crank linkage mechanism, that is h＞2r, see Fig. 3 and Fig. 6, the offset crank linkage mechanism of this programme is compared with the traditional crank linkage mechanism had the journey of increasing characteristic, therefore, when the stroke of plunger equates with the stroke of traditional crank linkage mechanism, the desirable less throw of eccentric of bent axle, thus the radial dimension of bent axle can be reduced.

4, because axial corresponding the reducing of the utility model bent axle, the also corresponding decline of the requirement of bearing.

5, owing to above reason, little, the more compact structure of the utility model volume, consumable quantity reduces, and manufacture cost descends.

Description of drawings

Accompanying drawing 1 is traditional three-cylinder plunger pump structure sectional view;

Accompanying drawing 2 is the A-A sectional view of Fig. 1;

Accompanying drawing 3 is traditional three-cylinder plunger pump connecting rod schematic representation;

Accompanying drawing 4 is the utility model three-cylinder plunger pump structure sectional view;

Accompanying drawing 5 is the B-B sectional view of Fig. 4;

Accompanying drawing 6 is the utility model three-cylinder plunger pump offset crank linkage mechanism schematic representation;

Accompanying drawing 7 is multi-cylinder cylinder body and column piston arrangement schematic representation.

In the above accompanying drawing: 1, plunger; 2, pump head; 3, water seal; 4, transmission case; 5, oil sealing; 6, link pin; 7, connecting rod; 8, bearing; 9, bent axle.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: shown in accompanying drawing 4～6, a kind of radially three-cylinder plunger pump triangular arrangement structure, form by three cover cylinder bodies, plunger 1 and connecting rod 7 shared bent axles 9, three cover cylinder bodies and plunger 1 are in upright arrangement each other parallel, the central point of cylinder body and plunger 1 is arranged into equilateral triangle overlooking under the state, sees Fig. 5.Described connecting rod is made up of bent axle 9, three connecting rods 7, and three connecting rods 7 are connected with three plungers 1 respectively by link pin 6 respectively.The relative cylinder body of gyration center axis of bent axle 9 and the biasing of the central point of plunger 1, and be positioned on the middle point vertical projection position of triangle form height.Three cylinder bodies are located on the pump head 2, and plunger 1 is arranged in cylinder body.

Embodiment two: a kind of radially four to seven cylinder plunger pump gore interposed structures, getting in the accompanying drawing 7 four to seven cylinder plunger pumps constitutes equilateral triangle by diagram and arranges, the relative cylinder body of gyration center axis of bent axle and the biasing of the central point of plunger, and be positioned on the middle point vertical projection position of triangle form height.Other is identical with embodiment one.

Claims

1, a kind of radial multi-cylinder post, reciprocating pump triangular arrangement structure, cylinder body, plunger or piston and the shared bent axle of connecting rod by three covers or the above quantity of three covers form, it is characterized in that: each cylinder body and plunger or piston are in upright arrangement each other parallel, the central point of cylinder body and plunger or piston is arranged into two row, and the central point of adjacent three cover cylinder bodies and plunger or piston constitutes equilateral triangle; The relative cylinder body of gyration center axis of described bent axle and the biasing of the central point of plunger or piston, and be positioned on the middle point vertical projection position of triangle form height.