CN2074383U

CN2074383U - Rotary-piston compressor

Info

Publication number: CN2074383U
Application number: CN 90216001
Authority: CN
Inventors: 蒋宗传; 赵瑞麟
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 1990-07-07
Filing date: 1990-07-07
Publication date: 1991-04-03

Abstract

The utility model relates to a compressor in rolling piston type which comprises a cylinder, an air inlet and an air exhausting valve arranged on the cylinder. A ferrule can plainly move in the cylinder, a gliding slab and a gliding slab spring are matched between the ferrule and the cylinder, an eccentric pressing block is connected with an axis in the ferrule, the inner wall of the cylinder, the circumferential direction and the radial direction of the ferrule are sealed by blocks, and the rolling friction contacting can be formed between the ferrule and the eccentric pressing block. Therefore, the sealing performance the lubrication performance and the volume coefficient of the compressor is increased without complex prepared lubrication system, and the utility model can be efficiently used without lubricating oil in the compressed air system.

Description

Rotary-piston compressor

The utility model relates to a kind of compressor, particularly a kind of rolling piston compressor.

Existing rolling piston compressor, mainly comprise the lasso (claiming rolling piston again) in cylinder, the cylinder, the eccentric crankshaft that matches with lasso, motor drives lasso by eccentric crankshaft and do plane motion in cylinder, finish the cyclic process of air-breathing, compression, exhaust, its shortcoming is: the sealing between lasso and cylinder, and promptly circumferential seal is a clearance seal, poor sealing performance, for oil-containing not or contain the gas of less amount of lubrication oil, the efficient of compressor is very low.For example, pressurized air just must could improve the efficient of air compressor to adding big gauging in the air, and owing to the fuel consumption of compressor is restricted, and the user do not require and have a large amount of oil in the air, thereby the use of rolling piston compressor just is restricted; In addition, in this compressor arrangement, use oil lubrication between lasso and bent axle, oil circuit is complicated and want special fuel tank, and the recovery of lubricant oil is difficulty also, more is difficult to use in the occasion of no oil gas body.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art, a kind of improved rolling piston compressor has been proposed, adopt between its lasso and cylinder and block sealing, be rolling friction between bent axle and lasso, not only improved compression efficiency, and enlarged using scope, in compression system, need not refuel and can use effectively yet.

The utility model comprises the lasso of the plane motion done in cylinder, the cylinder, be equipped with slide plate and sliding blade spring between lasso and cylinder, slide plate is divided into air aspiration cavity and compression chamber with cylinder inner cavity, the eccentric briquetting that one band eccentric opening, keyway and cylindrical hole are arranged in the lasso, roller is housed in the cylindrical hole, the internal surface of roller and lasso contacts, be equipped with the axle and the key of transferring power in eccentric opening, the keyway, between eccentric briquetting and the axle suitable compensation gap is arranged, make eccentric briquetting to have trace to move along radial direction.

When axle rotates, drive eccentric briquetting by key and rotate around the axle center with same rotational speed, the centrifugal force that eccentric briquetting produces makes eccentric briquetting along radial direction lasso be pressed to cylinder inner wall, thereby has eliminated the gap between lasso and the cylinder inner wall; In practical work process, because the influence of gas force, possible centrifugal force is less than the effect of gas force, make lasso can not press to cylinder inner wall, can between key and eccentric briquetting, add a spring, make centrifugal force add upper elasticity, can guarantee that lasso contacts with the cylinder inner wall face all the time greater than the maximum component of gas force on radial direction, like this, circumferential seal has just realized blocking sealing.There is seal ring the lasso end, radially blocks sealing to form.Between lasso and eccentric briquetting, be equipped with roller, can make to form the rolling friction contact therebetween.

This shows, because the utility model has realized blocking sealing between cylinder inner wall and lasso, forming rolling friction between lasso and eccentric briquetting contacts, thereby the sealability and the volumetric coefficient of rolling piston compressor have been improved, and do not need to prepare complicated lubrication system, save lubricant oil, improved the mechanical efficiency of this kind compressor.

Accompanying drawing is a structure principle chart of the present utility model.

Among the figure, (1) is that cylinder, (2) are that sliding blade spring, (3) are that slide plate, (4) are that outlet valve, (5) are that cylinder end piece, (6) are that lasso, (7) are that roller, (8) are that axle, (9) are that eccentric briquetting, (10) are that key, (11) are that spring, (12) are that suction port, (I) are that air aspiration cavity, (II) are compression chambers.

By power source such as motor driving shaft (8), axle (8) drives eccentric briquetting (9) rotation by key (10), and eccentric briquetting (9) drives lasso (6) by roller (7), and lasso (6) is done plane motion in cylinder (1); Slide plate (3) closely contacts with lasso (6) under the effect of sliding blade spring (2), and the inner chamber of cylinder (1) is divided into air aspiration cavity (I) and compression chamber (II); Gas is inhaled into air aspiration cavity (I) from suction port (12), after lasso (6) turns over slide plate (3) and seals suction port (12), rotation along with axle (8), gas is compressed by lasso (6), behind the pressure of pressure greater than the exhaust valve chamber of gas, outlet valve (4) is just opened automatically, and pressurized gas flows out compressor.

Claims

1, rolling piston compressor, comprise cylinder, suction port on the cylinder, outlet valve, the lasso of the plane motion done in the cylinder, be equipped with slide plate and sliding blade spring between lasso and cylinder, slide plate is divided into air aspiration cavity and compression chamber with cylinder inner cavity, feature of the present utility model is, one band eccentric opening is arranged in the said lasso, the eccentric briquetting of keyway and cylindrical hole, roller is housed in the cylindrical hole, the internal surface of roller and lasso contacts, eccentric opening, be equipped with the axle and the key of transferring power in the keyway, have between eccentric briquetting and the axle suitable can be so that eccentric briquetting has the mobile compensate for clearance of trace along radial direction.

2, rolling piston compressor according to claim 1 is characterized in that, can settle the spring of the eccentric briquetting centrifugal force of a compensation between described eccentric briquetting and key.

3, according to claim 1,2 described rolling piston compressors, it is characterized in that, between described lasso and the eccentric briquetting roller is housed.