CN2399523Y

CN2399523Y - Piston type gas compressor

Info

Publication number: CN2399523Y
Application number: CN 99254857
Authority: CN
Inventors: 李声剑
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-30
Filing date: 1999-11-30
Publication date: 2000-10-04
Anticipated expiration: 2009-11-30

Abstract

The utility model relates to a piston type gas compressor, which comprises a crankshaft connecting rod (5) and a piston (1). The piston (1) is connected with a piston connecting rod (2); the piston connecting rod (2) is connected with the crankshaft connecting rod (5) through a lever (4) which is provided with a supporting base (3). The utility model has the advantages of small lateral thrust force born by the piston, possibility of being made into a complete oil-free compressor, high efficiency, energy saving, simple structure, and small size.

Description

Piston gas compressor

The utility model relates to gas compressor, especially a kind of piston gas compressor.

Its working principle of piston gas compressor be energy with the output of motor or internal-combustion engine by mechanical transmission, become the to-and-fro motion of piston rotatablely moving, thereby realize the compression of gas is exported.And the usefulness that further improves piston gas compressor is the target that compressor development work person pursues always.For a long time, people improve its usefulness by air-flow path aspects such as the greasy property of improving machine and air valves, and the reciprocating structural type that becomes piston that rotatablely moves never changes in decades, has been considered as mature technology.I am when other compressor types of design, feel accidentally that this traditional mode of structure still has and improve part not to the utmost, the structure of conventional construction moving element has two kinds of forms: a kind of air compressor of W-0.9/7 type one class of producing as the Liuzhou second air compressor head factory, and the structure of its moving element is to drive reciprocating piston by bent axle, connecting rod, piston pivot pin; Another kind is as the air compressor of ZW-3/7 type one class of Liuzhou second air compressor head factory production, and the structure of its moving element is to drive reciprocating crosshead, piston rod and piston motion by bent axle, connecting rod, crosshead pivot pin.These two kinds of structural types are because connecting rod rotates around crankshaft handle, and the angle of oscillation of connecting rod is bigger, and its connecting rod directly drives wrist pin in first kind of structural type, and the piston pivot pin can apply bigger lateral thrust to piston; Its connecting rod directly drives crosshead pin in second kind of structural type, and the crosshead pivot pin also can apply bigger lateral thrust to crosshead.This lateral force can make piston that cylinder body, crosshead are produced bigger friction to the crosshead slideway, not only power consumption heating of these frictions, but also need take lubricated and cooling method, thereby very big to the usefulness influence of machine.

The purpose of this utility model provides a kind of piston gas compressor little to the reciprocating member lateral thrust.

For achieving the above object, the scheme that the utility model adopts is: it includes crankshaft-link rod and piston, and described piston is connected with piston rod, and this piston rod is connected with described crankshaft-link rod by a lever that bearing is housed on it.

The composition of above-mentioned piston and the piston rod that joins with it can have many covers, and two covers are generally arranged, and wherein two pistons correspond respectively to the first stage piston and the second piston of air compressor.Above-mentioned lever can be " T " font, and two symmetry ends of " T " font are connected with two piston rods respectively.

Being connected of above-mentioned piston rod and lever, lever and crankshaft-link rod be connected and piston rod adopts bearing pin or bearing pin and bearing thereof to be connected relatively turnable movable connection with being meant being connected of bearing; Above-mentioned piston can also can adopt fixed connection as above-mentioned relatively turnable movable connection with being connected of piston rod.

Have following beneficial effect owing to adopted such scheme, the utility model compared with prior art (to be in a ratio of example) with aforementioned ZW-3/7 type air compressor and same size the utility model:

1, the suffered lateral thrust of piston is little.In the prior art, because crankshaft-link rod is connected with piston, after the length of the stroke of piston and crankshaft-link rod was definite, the angle of oscillation of its crankshaft-link rod was determined by the swing diameter of crankshaft crank that just the angle of oscillation of its crankshaft-link rod is 32 °; The amplitude of fluctuation of the utility model piston rod only is the action of piston rod and lever tie point swing circular arc, the angle of oscillation of its piston rod only be 2 ° 20 '.Therefore the angle of oscillation of the utility model piston rod reduces significantly than prior art, and correspondingly the suffered lateral thrust of piston also reduces significantly than prior art.

2, can be made into completely without oily air compressor.Because the suffered lateral force of reciprocating member greatly reduces, can cancel crosshead assembly and cancellation with the oily lubricated measure that reaches cooling that piston is carried out, therefore, can be made into the full-oil-free lubrication air compressor.

3, energy-efficient.Because the suffered lateral force of reciprocating member greatly reduces and cancels the crosshead assembly, the frictional loss of these parts and the water that cooling method caused, the oil consumption of for this reason taking have been reduced.Therefore, can improve the efficient and the energy saving of machine.

4, simple in structure, volume is little.Owing to cancelled the crosshead assembly, the utility model has compared with prior art reduced machine part quantity, has reduced the volume of complete machine, and wherein machine part quantity has reduced 5%; The prior art volume is 700mm (length) * 600mm (wide) * 1700mm (height), and the utility model volume only is 850mm (length) * 420mm (wide) * 1060mm (height).

The utility model is described in further detail below in conjunction with the accompanying drawing example:

Fig. 1 is the utility model embodiment's a structural representation.

Shown in Figure 1, the utility model includes piston 1, crankshaft-link rod 5 and bent axle 6 grades and prior art be roughly the same part mutually, wherein piston 1 has two, they correspond respectively to one of air compressor, second piston, each piston 1 is connected with a piston rod 2 by dress bearing pin and bearing thereof thereon respectively, lever 4 is " T " font lever, it is contained on the bearing 3 by bearing pin and bearing thereof, bearing 3 is a part of fuselage, above-mentioned two piston rods 2 connect wherein two symmetry ends of lever 4 respectively by a bearing pin and bearing thereof, the other end of lever 4 is connected with above-mentioned crankshaft-link rod 5 by bearing pin and bearing thereof.

Claims

1, a kind of piston gas compressor, it includes crankshaft-link rod (5) and piston (1), it is characterized in that: described piston (1) is connected with piston rod (2), and this piston rod (2) is connected with described crankshaft-link rod (5) by a lever (4) that bearing (3) are housed on it.

2, piston gas compressor according to claim 1 is characterized in that: the composition that described piston (1) reaches the piston rod (2) that joins with it has many covers.

3, piston gas compressor according to claim 2, it is characterized in that: described lever (4) is " T " font, the composition that described piston (1) reaches the piston rod (2) that joins with it has two covers, and two piston rods (2) are connected with the wherein two ends of lever (4) respectively.