CN201255091Y

CN201255091Y - Star compressing mechanism

Info

Publication number: CN201255091Y
Application number: CNU200820099639XU
Authority: CN
Inventors: 冀庆康; 刘萍; 周月华; 张文华; 谭科学
Original assignee: CHONGQING YUEJIN MACHINERY Co Ltd
Current assignee: CHONGQING YUEJIN MACHINERY Co Ltd
Priority date: 2008-08-05
Filing date: 2008-08-05
Publication date: 2009-06-10
Anticipated expiration: 2018-08-05

Abstract

The utility model provides a star-shaped compressing mechanism. Four air cylinders are arranged on one plane in the housing of the compressor, and are distributed in star shape around a working chamber. The caliber of a primary air cylinder is larger than the caliber of a secondary air cylinder; the caliber of the secondary air cylinder is larger than the caliber of a third air cylinder; and the caliber of the third air cylinder is larger than the caliber of a fourth air cylinder. The basic shaft of a motor extends into the working chamber of the compressor housing; a driving wheel is arranged on the inner end of the basic shaft of the motor. The air inlet of the compressing chamber of the primary air cylinder communicates with an air inlet pipe; the vent of the compressing chamber of the primary air cylinder is connected with the air inlet of the compressing chamber of the secondary air cylinder. The vent of the compressing chamber of the secondary air cylinder is connected with the air inlet of the compressing chamber of the third air cylinder. The vent of the compressing chamber of the third air cylinder is connected with the air inlet of the compressing chamber of the fourth air cylinder. The vent of the compressing chamber of the fourth air cylinder is connected with an exhaust pipe. As the air cylinders are arranged in one plane in star shape, the force can be balanced well while the mechanism runs, and the mechanism can runs reliably; the entire mechanism runs stably with small vibration and low noise. In addition, compressed air can be delivered to the next stage efficiently through compression.

Description

Star shaped compressing mechanism

Technical field

The utility model relates to a kind of compressor, relates in particular to the star shaped compressing mechanism of compressor.

Background technique

Air compressor is as the power source of all kinds of Pneumatic actuator, and application area is very extensive.The compressing mechanism of conventional air compressor generally is made of parts such as compressor housing, electric machine main shaft, bent axle, connecting rod and cylinders, wherein the bent axle in electric machine main shaft and the compressor housing is connected, cylinder arrangement is on the next door of bent axle, the piston rod of cylinder links to each other with bent axle by connecting rod, and cylinder is L-shaped or " V " shape or the setting of " H " shape.The driven by motor crankshaft rotating, the drivening rod motion did reciprocating linear motion piston when bent axle rotated in cylinder body, and the gas that the linear reciprocating motion of piston will suck cylinder compresses step by step, finally reaches desired gas pressure.Adopt the deficiency of the air compressor existence of above compressing mechanism to be:

1, each cylinder is not arranged in same plane, and equilibrium of forces and reliability are relatively poor in the process of running, and can produce bigger vibration and noise.

2, the pressurized air efficient that passes to next stage by compression is lower, and the heat load height, is easy to generate the valve block carbon distribution, and the working life of valve block is short.

3, complex structure, manufacture cost height, the replacing of component, maintenance be difficulty relatively.

4, bulk is bigger, and floor space is wide.

The model utility content

Technical problem to be solved in the utility model is to provide a kind of motion steadily reliable star shaped compressing mechanism.

The technical solution of the utility model is as follows: a kind of star shaped compressing mechanism, comprise compressor housing, electric machine main shaft, the one-level cylinder, secondary cylinder, three-stage cylinder and level Four cylinder, its key is: the middle part in described compressor housing has active chamber, described four cylinders are positioned on the same plane of compressor housing, and be star in the periphery of active chamber and distribute, the open-mouth end of four cylinders all communicates with active chamber, wherein one, the shaft axis of three-stage cylinder is on same straight line, two, the shaft axis of level Four cylinder on same straight line, and the internal diameter of one-level cylinder greater than the internal diameter of secondary cylinder greater than the internal diameter of three-stage cylinder internal diameter greater than the level Four cylinder; Described electric machine main shaft stretches in the interior active chamber of compressor housing, in the inner of electric machine main shaft driving wheel is installed, and when this driving wheel rotated under the drive of electric machine main shaft, the piston that can promote each cylinder did reciprocating linear motion in cylinder body; The suction port of described one-level cylinder compression chamber communicates with suction tude, the relief opening of one-level cylinder compression chamber joins by the suction port of first breathing pipe and secondary cylinder compression chamber, the relief opening of secondary cylinder compression chamber joins by the suction port of second breathing pipe and three-stage cylinder compression chamber, the relief opening of three-stage cylinder compression chamber joins by the suction port of the 3rd breathing pipe and level Four cylinder compression chamber, and the relief opening of level Four cylinder compression chamber is connected with outlet pipe.

Adopt above technological scheme, motor drives the driving wheel rotation by main shaft, and the piston of each cylinder is done reciprocating linear motion, and the to-and-fro motion of four cylinder pistons will suck separately that the gas of compression chamber compresses step by step, finally reach required gas pressure, stay by the air cylinder storage.The flow direction of gas is: when the piston of one-level cylinder moves toward the lower dead center direction, the compression chamber volume of one-level cylinder increases, suck air by suction tude from the external world, when the piston of one-level cylinder moves toward the top dead center direction, because in the suction tude one-way valve is housed, gas can not reflux, this moment, the compression chamber volume of one-level cylinder diminished, gas is pressed in the compression chamber of secondary cylinder by first breathing pipe, and just in time the piston of corresponding secondary cylinder moves toward the lower dead center direction; In like manner, when the piston of secondary cylinder moves toward the top dead center direction, because the air pressure in the secondary cylinder is less than the air pressure of one-level cylinder but greater than the air pressure of three-stage cylinder, therefore the piston of secondary cylinder is pressed into gas in the compression chamber of three-stage cylinder by second breathing pipe, the piston of three-stage cylinder further compresses gas again, is pressed in the level Four cylinder by the 3rd breathing pipe, at last by outlet pipe input air cylinder, one-way valve is installed, to prevent gas backstreaming in the outlet pipe.

For the reliability that further improves each cylinder piston motion and pressurized air pass to the efficient of next stage by compression, above-mentioned driving wheel is ellipse or cydariform.

In order to make more compact structure, dismounting more convenient, above-mentioned four cylinders are installed in respectively in the holding cavity in the compressor housing, and the outer end of each holding cavity is by end bracket enclosed, and this end cap fixes by screw and compressor housing.

The beneficial effects of the utility model are:

1, each cylinder is star arrangement in same plane, equilibrium of forces and good reliability in the process of running, and the entire mechanism motion is steadily, vibration is little, noise is low.

2, every cylinder is independent, and pressurized air passes to the efficient height of next stage by compression, and heat load is low, can effectively reduce the valve block carbon distribution, the long service life of valve block.

3, easy accessibility, low cost of manufacture, the replacing of component, maintenance are than being easier to.

4, compact structure, bulk are less, and floor space is few.

Description of drawings

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

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1, the utility model is by compressor housing 1, electric machine main shaft 2, driving wheel 3, one-level cylinder 4, secondary cylinder 5, three-stage cylinder 6, level Four cylinder 7, end cap 8, suction tude 10, first breathing pipe 11, second breathing pipe 12, parts such as the 3rd breathing pipe 13 and outlet pipe 14 constitute, wherein the middle part in the compressor housing 1 is an active chamber 9, the periphery of this active chamber 9 has the holding cavity that four air feed cylinders are installed, these four holding cavities are cross and are symmetrically distributed, the inner of each holding cavity is communicated with active chamber 9, the outer end of holding cavity is by end cap 8 sealings, and this end cap 8 fixes by screw and compressor housing 1.Motor (not drawing among the figure) is installed in the outside of compressor housing 1, and the main shaft 2 of this motor stretches in the active chamber 9 in the compressor housing 1, in the inner of electric machine main shaft 2 driving wheel 3 is installed, and this driving wheel 3 be ellipse or cydariform or other suitable shape.Described four cylinders 4,5,6,7 are installed in respectively in the holding cavity in the compressor housing 1, four cylinders 4,5,6,7 are in the same plane, and be star in the periphery of active chamber 9 and distribute, the open-mouth end of four cylinders 4,5,6,7 all communicates with active chamber 9, wherein one, the shaft axis of three-stage cylinder 4,6 is on same straight line, two, the shaft axis of level Four cylinder 5,7 is on same straight line, and the internal diameter of one-level cylinder 4 greater than the internal diameter of secondary cylinder 5 greater than the internal diameter of three-stage cylinder 6 internal diameter greater than level Four cylinder 7.

As can be known from Fig. 1, the suction port of described one-level cylinder 4 compression chambers communicates with suction tude 10, in suction tude 10, one-way valve is housed, with guarantee gas from suction tude 10 towards one-level cylinder 4 one-way flow, the relief opening of one-level cylinder 4 compression chambers joins by the suction port of first breathing pipe 11 with secondary cylinder 5 compression chambers, the relief opening of secondary cylinder 5 compression chambers joins by the suction port of second breathing pipe 12 with three-stage cylinder 6 compression chambers, the relief opening of three-stage cylinder 6 compression chambers joins by the suction port of the 3rd breathing pipe 13 with level Four cylinder 7 compression chambers, the relief opening of level Four cylinder 7 compression chambers is connected with outlet pipe 14, one-way valve also is housed in outlet pipe 14, with guarantee gas from level Four cylinder 7 towards outlet pipe 14 one-way flow.

Working principle of the present utility model is:

Motor drives driving wheel 3 rotations by main shaft 2, the piston that driving wheel 3 promotes each cylinder does reciprocating linear motion by replacing rule, the to-and-fro motion of four cylinder pistons will suck separately that the gas of compression chamber compresses step by step, finally reach required gas pressure, be stayed by the air cylinder storage.The flow direction of gas is: when the piston of one-level cylinder 4 moves toward the lower dead center direction, the compression chamber volume of one-level cylinder 4 increases, suck air from the external world by suction tude 10, when the piston of one-level cylinder 4 moves toward the top dead center direction, because in the suction tude 10 one-way valve is housed, gas can not reflux, the compression chamber volume of one-level cylinder 4 diminishes at this moment, gas is pressed in the compression chamber of secondary cylinder 5 by first breathing pipe 11, and the piston of just in time corresponding secondary cylinder 5 is toward the motion of lower dead center direction; In like manner, when the piston of secondary cylinder 5 moves toward the top dead center direction, because the air pressure in the secondary cylinder 5 is less than the air pressure of one-level cylinder 4 but greater than the air pressure of three-stage cylinder 6, therefore the piston of secondary cylinder 5 is pressed into gas in the compression chamber of three-stage cylinder 6 by second breathing pipe 12, and the piston of just in time corresponding three-stage cylinder 6 is toward the motion of lower dead center direction, when the piston of three-stage cylinder 6 moves toward the top dead center direction, because the air pressure in the three-stage cylinder 6 is less than the air pressure of secondary cylinder 5 but greater than the air pressure of level Four cylinder 7, therefore the piston of three-stage cylinder 6 is pressed into gas in the compression chamber of level Four cylinder 7 by the 3rd breathing pipe 13, and the piston of just in time corresponding level Four cylinder 7 is toward the motion of lower dead center direction, when the piston of level Four cylinder 7 moves toward the top dead center direction, one-way valve opens in the outlet pipe 14, after gas in the level Four cylinder 7 is further compressed like this, in outlet pipe 14 input air cylinders.Driving wheel 3 whenever rotates a circle just has corresponding pressurized gas to be pressed in the air cylinder, and along with the continuous rotation of driving wheel 3, pressurized gas also can continue to import in the air cylinder.

Claims

1, a kind of star shaped compressing mechanism, comprise compressor housing (1), electric machine main shaft (2), one-level cylinder (4), secondary cylinder (5), three-stage cylinder (6) and level Four cylinder (7), it is characterized in that: the middle part in described compressor housing (1) has active chamber (9), described four cylinders (4,5,6,7) be positioned on the same plane of compressor housing (1), and be star in the periphery of active chamber (9) and distribute, four cylinders (4,5,6,7) open-mouth end all communicates with active chamber (9), wherein one, three-stage cylinder (4,6) shaft axis is on same straight line, two, level Four cylinder (5,7) shaft axis on same straight line, and the internal diameter of one-level cylinder (4) greater than the internal diameter of secondary cylinder (5) greater than the internal diameter of three-stage cylinder (6) internal diameter greater than level Four cylinder (7); Described electric machine main shaft (2) stretches in the interior active chamber (9) of compressor housing (1), driving wheel (3) is installed in the inner at electric machine main shaft (2), when this driving wheel (3) rotated under the drive of electric machine main shaft (2), the piston that can promote each cylinder did reciprocating linear motion in cylinder body; The suction port of described one-level cylinder (4) compression chamber communicates with suction tude (10), the relief opening of one-level cylinder (4) compression chamber joins by the suction port of first breathing pipe (11) with secondary cylinder (5) compression chamber, the relief opening of secondary cylinder (5) compression chamber joins by the suction port of second breathing pipe (12) with three-stage cylinder (6) compression chamber, the relief opening of three-stage cylinder (6) compression chamber joins by the suction port of the 3rd breathing pipe (13) with level Four cylinder (7) compression chamber, and the relief opening of level Four cylinder (7) compression chamber is connected with outlet pipe (14).

2, star shaped compressing mechanism according to claim 1 is characterized in that: described driving wheel (3) is ellipse or cydariform.

3, star shaped compressing mechanism according to claim 1 and 2, it is characterized in that: described four cylinders (4,5,6,7) are installed in respectively in the interior holding cavity of compressor housing (1), the outer end of each holding cavity is by end cap (8) sealing, and this end cap (8) fixes by screw and compressor housing (1).