CN2348149Y

CN2348149Y - Wear automatic compensating rotary pump

Info

Publication number: CN2348149Y
Application number: CN 98226389
Authority: CN
Inventors: 刘发贤
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-03
Filing date: 1998-04-03
Publication date: 1999-11-10
Anticipated expiration: 2008-04-03

Abstract

The utility model relates to an abrasion automatic compensation rotary pump which is characterized in that a fish-shaped piston is adopted, the pump is composed of two symmetrically arranged left and right end bodies and is provided with an elastic body between the two end bodies and roller slots on both end parts, rollers are embedded in the slots and use each roller shaft and each piston shaft arranged on the same straight line as the roller shaft as the support, and piston slide blocks are arranged in left and right segments. The cylinder structure with round cylinder lines is adopted, a pump cylinder and an end cover are in eccentric arrangement, the inner side of the end cover is provided with slide ways along the diameter, and the piston slide blocks are embedded in the slide ways. The utility model compensates abrasion automatically and has the advantages of effective enhancement of the work efficiency of the rotary pump, operating range expansion and manufacturing cost reduction.

Description

Wear automatic-compensation rotor pump

The utility model relates to rotor pump.More particularly, be a kind of cylinder body and piston of comprising, have the function that pump advances, pumps fluid (gas, liquid), be particularly useful for the rotor pump of machinery, chemical field.

Rotor pump of the prior art is a lot, mainly contains rotating vane pump and gear rotor pump.Rotating vane pump mainly is made up of pumping cylinder, rotor, blade, end cap, valve etc., and such pump is because structure is limit, and there are the following problems:

1, poor sealing performance.The side face of pump relies on pumping cylinder to cooperate microgap to seal with rotor flank, and along with the increasing of pumping cylinder week surface wear, the gap is increasing, and sealing effect just worse and worse.Adjustment sealed with the microgap of blade when the end face of pump relied on the end cap and the pump housing fixedly, and same, along with the wearing and tearing of end cap and blade side, the gap is increasing, and sealing effect also just worse and worse.

2, the pressure of pump is low.Because structure is limit, the pressure of pump is high more, and seepage is just serious more, has limited the raising of the pressure of pump greatly.

3, the pump amount is little.Because length of blade can not surpass rotor radius, has limited the further raising of pump amount.

In addition, the gear rotor pump as another kind of type structurally mainly contains driving tooth, eccentric rotor tooth, the pump housing, end cap and valve composition.Because between its end face and the body is secure fit, can not get compensation after the wearing and tearing, thereby the end face seal effect is relatively poor.Because profile accuracy height, difficulty of processing are big, complex process, cause that this pump manufacture difficulty is big, cost is high.

The purpose of this utility model is to avoid above-mentioned deficiency of the prior art, and a kind of wear automatic-compensation rotor pump is provided.In the hope of by improving working efficiency that sealability improves rotor pump, broadening the scope of work, simultaneously by structural change, reduce manufacture difficulty, reduce manufacture cost.

The purpose of this utility model is achieved through the following technical solutions.

The utility model comprises cylinder body and piston, and its structural feature is:

A, employing " fish shape " piston, this piston is made of symmetrically arranged left and right end body, between the left and right end body elastomer is set, roller slot is offered at the two end part of left and right end body, groove is embedded with roller, with described each roller axle and with each piston shaft that roller is located along the same line be supporting, piston slider is set, the left and right segmentation setting of described piston slider;

B, employing have the housing structure of circular cylinder molded lines, and its pumping cylinder and rotating left end cap, the eccentric setting of right end cap are offered chute in described left end cap, right end cap inboard along diameter, and piston slider is embedded in this chute.

Compared with the prior art, the utlity model has following advantage:

1, the piston in the utility model adopts the split combination to make, and elastomer is being set each other, owing to himself have Telescopic, can carry out wear automatic-compensation effectively.The two ends roller construction of Cai Yonging plays and reduces frictional resistance and to the effect of inner chamber of cylinder block sidewall cloth oil lubrication, make piston realize high speed rotating, and increase the service life simultaneously.End cap cooperates with the pumping cylinder port activity, behind the wear of end cover, is tightened up automatically by the screw thread cover tile, thereby increases the service life, and improves sealing effect.

2, owing to the off-centre setting between internal cavity and the rotary end cover, when piston rotation arrived the eccentric part extreme higher position, fish shape piston overlapped with cylinder shaped conductor, and compression ratio is infinitely great in theory.In fact also can reach very high compression ratio.

3, the utility model adopts the cloth oil lubrication to the pumping cylinder working surface, and cylinder cap is to make eccentric rotary with respect to inner chamber, behind the bottom adhesion machine oil of pumping cylinder, is wiped off by the pumping cylinder port, becomes oil film and enters pumping cylinder.The pumping cylinder wall makes the even cloth oil film of pumping cylinder wall by piston roller cloth oil, thus make enter pumping cylinder oil level seldom, reduced consumption of lubricating oil, improve sealing effect.

4, the utility model is because the said structure advantage, and the improvement in performance of bringing simultaneously is that also air inlet, liquid measure are big etc.

5, cylinder body of the present utility model can adopt cast inblock, and manufacturing need not special device, and manufacture cost reduces greatly.

Fig. 1 is that the utility model assembled shaft is to generalized section.

Fig. 2 is the utility model assembling radial section schematic representation.

Fig. 3 is the utility model " fish shape " piston structure schematic representation.

Fig. 4 is the utility model left end cap master TV structure schematic representation.

Fig. 5 is Fig. 4 A-A cross-sectional schematic.

Fig. 6 is the utility model right end cap master TV structure schematic representation.

Fig. 7 is Fig. 6 B-B cross-sectional schematic.

By the following examples, in conjunction with the accompanying drawings the utility model is further described:

Embodiment:

Referring to Fig. 1, Fig. 2, Fig. 3, adopt " fish shape " piston 1, this piston 1 is made of symmetrically arranged left and right end body, between the left and right end body elastomer 2 is set, roller slot is offered at the two end part of left and right end body, and groove is embedded with roller 3, with described each roller axle 4 and with each piston shaft 5 that roller axle 4 is located along the same line be supporting, piston slider 6 is set, described piston slider 6 left and right segmentation settings.

Employing has the housing structure of circular cylinder molded lines, its pumping cylinder 7 and rotating left end cap 16, right end cap 17 eccentric settings.As Fig. 5, shown in Figure 7, offer chute 9 in described left and right end cap inboard along diameter, piston slider 6 is embedded in this chute 9.

As shown in Figure 3, between the left and right end body of described piston, " king " shape support 10 is set, support 10 upper and lower ends fixedly install gasket seal 11 respectively, and support 10 middle parts fixedly install elastomer 2.

As shown in Figure 1 and Figure 2, cylinder body 12 is supporting masses of other parts, and the cylinder body 12 in the present embodiment adopts cast inblock, has import 14 on it, equally also has outlet 8.The structure of cylinder body is little cylinder of cover in a large cylinder, and large cylinder is not concentric placement with little cylinder, but eccentric the placement.Throw of eccentric in the present embodiment is got 1/4 of inner chamber of cylinder block diameter.

Again as shown in Figure 1, between left end cap 16, right end cap 17 and the cylinder body shell 12 by screw thread cover tile 13 positioning supports.

Referring to Fig. 1, Fig. 2, Fig. 3, be weight reduction, and grease channel is set, piston 1 is designed to hollow body, and offers a plurality of piston oilholes 15.

Referring to Fig. 4, Fig. 5,, offer the pump oilhole pawl 18 that can serve as pump oil blade in the inboard of left end cap 16, and offer a plurality of oil inlet holes 19 in order to realize system's selflubricating.Utilize the rotation of end cap, machine oil is pumped into by pump oilhole pawl 18.

Referring to Fig. 6, Fig. 7, same, in order to realize system's selflubricating, offer a plurality of oil outlets 20 in the inboard of right end cap 17.Centrifugal force when utilizing end cap to rotate throws away oil from oil outlet 20.

Piston Rotate 180 degree, the overall process of promptly finished, pressing is promptly finished a work cycle.When piston rotates 180 degree again, when also promptly rotating a circle, finish two work cycle.

Claims

1, a kind of wear automatic-compensation rotor pump comprises cylinder body and piston, it is characterized in that:

A, employing " fish shape " piston (1), this piston (1) is made of symmetrically arranged left and right end body, elastomer (2) is set between the left and right end body, roller slot is offered at the two end part of left and right end body, groove is embedded with roller (3), with described each roller axle (4) and with each piston shaft (5) that roller axle (4) is located along the same line be supporting, piston slider (6) is set, the left and right segmentation setting of described piston slider (6);

B, employing have the housing structure of circular cylinder molded lines, its pumping cylinder (7) and left end cap (16), the eccentric setting of right end cap (17), offer chute (9) in described left end cap (16), right end cap (17) inboard along diameter, piston slider (6) is embedded in this chute (9).

2, wear automatic-compensation rotor pump according to claim 1, it is characterized in that between the left and right end body of described piston (1), " king " shape support (10) is set, and support (10) upper and lower end fixedly installs gasket seal (11), and support (10) middle part fixedly installs elastomer (2).

3, wear automatic-compensation rotor pump according to claim 1 is characterized in that between described left end cap (16), right end cap (17) and the cylinder body shell (12) by screw thread cover tile (13) positioning support.

4, wear automatic-compensation rotor pump according to claim 1 is characterized in that described piston (1) is designed to hollow body, and offers a plurality of piston oilholes (15).

5, wear automatic-compensation rotor pump according to claim 1 is characterized in that, offers the pump oilhole pawl (18) that can serve as pump oil blade in the inboard of left end cap (16), and offers a plurality of oil inlet holes (19); Offer a plurality of oil outlets (20) in the inboard of right end cap (17).