CN200985874Y

CN200985874Y - Air compressor device

Info

Publication number: CN200985874Y
Application number: CN 200620066319
Authority: CN
Inventors: 吴卫东
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-16
Filing date: 2006-10-16
Publication date: 2007-12-05
Anticipated expiration: 2016-10-16

Abstract

The utility model relates to an air compressing device and includes the valve type air compressor. The utility model is characterized in that the air compressing device is provided with a screw type air compressor and the air outlet of the screw air compressor is connected with the air inlet of the valve type air compressor; an air storage tank is provided between the air outlet of the screw type air compressor and the air inlet of the valve type air compressor; the air outlet of the screw type is connected with the air inlet of the air storage tank and the air outlet of the air storage tank is connected with the air inlet of the valve type air compressor; the screw type air compressor is provided with an air outlet which can provide air directly to the outside. The utility model has a large air displacement, a high air vent pressure, small energy consumption, a low vibration and noises, a low installation base to the equipment and can output two kinds of air with different air pressure at the same time.

Description

Air compression plant

Technical field

The utility model belongs to the air compression technical field, is specifically related to a kind of air compression plant.

Background technique

Air compressor (hereinafter to be referred as air compressor) is widely used in the industrial production, and existing air compressor mainly contains piston type, screw type and centrifugal three kinds.Three kinds of air compressors respectively have its pluses and minuses.Wherein centrifugal air compressor is because equipment and technology content height, complicated operation, service condition height, maintenance cost are big, thus the less application of centrifugal air compressor, two kinds of relatively more commonly used is piston type air compressor and screw-rod air compressors.Screw-rod air compressor utilizes being meshing with each other of negative and positive screw rotor to make that the between cog volume constantly reduces, the pressure of gas improves constantly, thereby produce pressurized air continuously, its outstanding advantage is that air displacement (being gas production) is big, energy loss is few, running is steady, vibration is little, but it is little that its shortcoming is an exhaust pressure, generally can only reach about 15 barometric pressure.Piston type air compressor then is that the to-and-fro motion that utilizes bent axle to drive piston is compressed and constantly exhaust the gas in the cylinder chamber, and its advantage is the exhaust pressure height, generally can reach about 30 barometric pressure.

But traditional piston type air compressor has many shortcomings equally: 1, energy loss is big, this is because the cylinder of piston type air compressor is easy to generate the air-flow leakage, and there is clearance volume inevitably in its cylinder, gas during work in the clearance volume is along with the to-and-fro motion of piston, the time and expand, the time and be compressed, compressor need expend a certain proportion of power this portion gas is constantly being done idle work, so the piston type air compressor energy loss is big; 2, air displacement is little, this mainly contains following several respects reason: there is big intake resistance in the suction valve of (1), piston type air compressor, and the power of air inlet little (promptly having only about a barometric pressure), cause the density and the quality of the air that sucks little, the gaseous mass of Pai Chuing is very little certainly at last; (2), in the clearance volume of piston type air compressor cylinder remaining pressurized gas at first expand in the starting stage of backward stroke of the piston, have only when this part gas and be expanded to pressure when identical with barometric pressure or low slightly, cylinder could begin air-breathing, so the existence of clearance volume has also caused the postponement and long-pending the taking of cylinder air absorbing body of breathing process, gettering quantity is further reduced, the air displacement that the minimizing of gettering quantity finally also has influence on compressor naturally is very little, and the actual gettering ability of piston type air compressor becomes the bottleneck factor of the final gas production of restriction; 3, because piston type air compressor is reciprocatory motion, intermittent type air feed, vibration and noise are bigger when therefore moving, equipment volume is big and heavy, equipment installing base requires high, particularly air can be compressed to 30 atmospheric compressors from a barometric pressure, its equipment volume and vibration are bigger, need the special basis of installing, and the vibration of operation and noise also more allow the people be difficult to stand.

Summary of the invention

The purpose of this utility model is to be to overcome above-mentioned shortcoming and a kind of air compression plant is provided, and its air displacement is big, the exhaust pressure height, and energy loss is little.

For realizing above purpose, air compression plant of the present utility model comprises piston type air compressor, and its main feature is that this air compression plant also is provided with screw-rod air compressor, and the air outlet of screw-rod air compressor is connected to the suction port of piston type air compressor.

Realization above-mentioned purpose scheme preferably is: also be provided with gas holder between the air outlet of screw-rod air compressor and the suction port of piston type air compressor, the air outlet of screw-rod air compressor connects the suction port of gas holder, and the air outlet of gas holder connects the suction port of piston type air compressor.

Realize that the better scheme of above-mentioned purpose is: screw-rod air compressor also be provided with in addition can be directly to the air outlet of extraneous air feed.

The utlity model has following advantage and effect:

Energy loss was few when 1, air compression plant of the present utility model was worked, and air displacement is big.

2, the utility model is because the gas deliverability height, and then improves exhaust pressure easily, and maximum exhaust pressure can arrive about 60 barometric pressure, and exhaust pressure is big.

Vibration and noise were low when 3, the utility model moved, and equipment installing base requires also low.

4, the utility model can obtain the higher pressurized air of pressure from the air outlet of piston type air compressor, also can lead to extraneous air outlet from screw-rod air compressor and obtain the lower pressurized air of pressure, a table apparatus can be exported the air of two kinds of different air pressure simultaneously.

Description of drawings

Fig. 1 is the structural representation of a kind of specific embodiment of the utility model.

Embodiment

Air compression plant shown in Figure 1 comprises tank wall 3, piston type air compressor 1 and screw-rod air compressor 2, and first air outlet 21 of screw-rod air compressor connects the suction port 41 of gas holder 4, and the air outlet 42 of gas holder connects the suction port 11 of piston type air compressor.During work, air enters screw-rod air compressor 2 by the suction port 23 of screw-rod air compressor, earlier be compressed to 10-15 barometric pressure by screw-rod air compressor 2, then through first air outlet, 21 input gas holder 4, after the cooling, 10-15 atmospheric air through the air outlet 42 of gas holder, the suction port 11 input piston formula air compressors 1 of piston type air compressor, then further be compressed to 30-40 barometric pressure by piston type air compressor 1 again, export 30-40 atmospheric air to the external world by the air outlet 12 of piston type air compressor.

Screw-rod air compressor 2 also is provided with one in addition can be directly to the air outlet 22 of extraneous air feed, and this air outlet is provided with valve 24, in case of necessity can be directly to extraneous air feed, and the air pressure of air feed is approximately 10-15 barometric pressure.

The working procedure of the foregoing description air compression plant is compared with traditional piston type air compressor (can directly air be compressed to 30 atmospheric piston type air compressors from a barometric pressure), can be described more specifically advantage of the present utility model and effect:

1, in the air compression plant of the foregoing description when work, can be compressed to air about 15 barometric pressure by a barometric pressure earlier by screw-rod air compressor, recompressed about 30 barometric pressure by the air of piston type air compressor about with 15 barometric pressure then; Angle from volume compression ratio, in the foregoing description, the task of piston type air compressor only needs about 1 times of air compression (promptly be compressed to about 30 barometric pressure from about 15 barometric pressure, the task of the piston type air compressor that tradition is simple then is with about 30 times of air compression).So the piston type air compressor of the foregoing description only needs air compression about 1/2, so its piston stroke short (having lacked doubly a lot of than the simple piston type air compressor of tradition), energy loss is correspondingly less; From another viewpoint, in the utility model, owing to utilize the low screw-rod air compressor of energy loss to finish a part of compression work, and the big piston type air compressor task of energy loss is alleviated significantly, thus can reduce energy loss on the whole.

2, the air compression plant air displacement of the foregoing description is big, this mainly contains following two aspect reasons: during the work of (1) the foregoing description, the air that piston type air compressor is drawn has reached about 15 barometric pressure, its density and quality are 15 times of the air drawn of conventional piston formula air compressor, therefore the gettering ability of the piston type air compressor of the foregoing description is about 15 times of conventional piston formula air compressor, and its gettering ability can not become the bottleneck factor of the final gas production of restriction; (2), owing to the air that enters piston type air compressor reaches about 15 barometric pressure, make in the clearance volume of piston type air compressor cylinder remaining pressurized gas only need expand into just can begin about 15 barometric pressure air-breathing, and do not resemble need expand into the conventional piston formula air compressor just begin about 1 barometric pressure air-breathing.So in the utility model, the air-breathing volume of piston type air compressor, time, density, quality all obviously greater than or more than conventional piston formula air compressor; And the screw-rod air compressor in the utility model itself just has the big advantage of air displacement, and therefore the piston type air compressor that the gas production of air compression plant of the present utility model is more simple than tradition is much bigger.

3, the piston type air compressor of the foregoing description only needs about 1 times of air compression, and piston stroke is short, and its vibration and noise are lower when therefore moving, and equipment installing base requires also low.

4, the foregoing description can obtain the higher pressurized air of pressure from the air outlet of piston type air compressor, also can obtain the lower pressurized air of pressure from the extraneous air outlet of leading to of screw-rod air compressor, a table apparatus can be exported the air of two kinds of different air pressure simultaneously.

Claims

1, a kind of air compression plant comprises piston type air compressor, it is characterized in that: it also is provided with screw-rod air compressor, and the air outlet of screw-rod air compressor is connected to the suction port of piston type air compressor.

2, air compression plant according to claim 1, it is characterized in that: also be provided with gas holder between the air outlet of screw-rod air compressor and the suction port of piston type air compressor, the air outlet of screw-rod air compressor connects the suction port of gas holder, and the air outlet of gas holder connects the suction port of piston type air compressor.

3, air compression plant according to claim 1 is characterized in that: screw-rod air compressor also is provided with direct air outlet to extraneous air feed in addition.