CN87101341A - Oil pressure reciprocating vacuum pump and compressor - Google Patents

Abstract

Oil pressure reciprocating vacuum pump and compressor are that a kind of novel vacuum obtains and compressed air unit.Because hydraulic transmission mechanism, vacuum acquisition mechanism, air compressing mechanism are integrated in the present invention, make its designs simplification, volume-diminished; Because there is not the gas leak phenomenon of motive sealing between axle and the axle sleeve in vacuum chamber and can improves the performance that vacuum obtains; Working lubrication condition well can guarantee the long-term safety operation; Can reduce noise owing to oil pressure actuated.

This equipment not only can be applied among the multiple vacuum production technology of industrial and agricultural production widely, again owing to possess the performance that will be compressed by the gas that be extracted or atmosphere, thereby can further enlarge its application area.

Description

The present invention is that a kind of new vacuum obtains and compressed air unit.Be mainly used in vacuum impregnation, vacuum outgas, vacuum distillation, vacuum evaporation, vacuum concentration, vacuum crystallization, vacuum drying, vacuum filtration, and aspect such as concrete vacuum operation extract gas, and can in the process that obtains vacuum, will be extracted gas and be compressed.

The present invention also can directly use as air compression.

That this equipment has is simple in structure, volume is little, noise is little, applied range and a tractor serves several purposes, advantage such as safe and reliable.

The present invention mainly contains oil cylinder, two pistons, piston shaft, bleed cut down, exhaust is cut down, vacuum line, reversing bar and changement, oil supply pipeline, oil feed pump, fuel tank etc. are partly formed.

The present invention can reach and obtain vacuum and compressed-air actuated purpose, mainly by passing through oil feed pump, oil supply pipeline, reversing bar and changement, make two pistons and piston shaft in oil cylinder, can do continuous to-and-fro motion, in the process of motion, make form vacuum and two volumes of gas compression respectively in the cylinder chamber at two ends of two-piston after, finish under the effect of cutting down with exhaust bleeding to cut down again.

Oil feed pump is supplied with working pressure oil in oil cylinder, be the power that two pistons and piston shaft move reciprocatingly in oil cylinder.

Changement is finished piston and deciding stroke reciprocating commutation work in oil cylinder.As shown in Figure 1.The pressure oil that oil feed pump is confessed by oil supply pipeline and changement to in-oil cylinder A chamber fuel feeding.The indoor oil of B flows back to fuel tank by the return line that changement forms, under this operating mode, two pistons and piston shaft can be pressed the operation of arrow indicated direction surely, when running to the defined position, piston B will promote to stretch at the indoor reversing bar of B and make reversing bar stretch to the A chamber to motion aspect the A chamber, drive by the position that changes reversing bar and to have changed changement fuel feeding and oil return direction in oil cylinder, promptly become, pressure oil feeds to the B chamber, the indoor oil of A flows back to fuel tank, and two pistons and piston shaft just can be pressed the opposite direction motion of arrow indication surely under this operating mode.When piston A moves to assigned position, will promote to be pushed away to stretch to move to the B chamber at the indoor reversing bar of A by piston B, make reversing bar stretch to the B chamber again, thereby change the moving direction of two pistons and piston shaft again, formed operating mode shown in Figure 1 again, going round and beginning again so just to make continuous the moving reciprocatingly in oil cylinder of two pistons and piston shaft.

Vacuum obtains principle as shown in Figure 1, when two-piston and piston shaft are pressed the motion of the indicated direction of arrow, the volume of the vacuum chamber that forms in the piston B end cylinder chamber enlarges gradually, under this operating mode, bleed to cut down automatically and opened by suction, this moment the gas that extracted by vacuum line, bleeding to cut down is extracted in the vacuum chamber, finish to extract gas and obtain vacuum process; Dwindle gradually in this gas compression chamber that forms in the piston A end cylinder chamber simultaneously, gas progressively compresses, and under this operating mode, bleeding to cut down is compressed air compaction and closes, and exhaust is cut down and is compressed gas and opens.Pressurized gas is discharged from the process of getting rid of gas of having finished, when two-piston is pressed opposite direction motion shown in the arrow again.Vacuum chamber shown in Figure 1 just changes and becomes pressing chamber, and shown pressing chamber becomes vacuum chamber with regard to change and continues to finish bleed acquisition vacuum and compression discharge gas process, and reaches the purpose of continuous acquisition vacuum.

Vacuum obtains and is extracted the principle that gas compresses.In the process that vacuum obtains, changing quilt shown in Figure 1 extracts gas and cuts down the structural type that directly enters atmosphere by exhaust, promptly be that two relief openings are coupled together by gas exhaust piping and airtight collecting container, the gas that will be extracted directly is pressed into collecting container.Just can reach in the process that obtains vacuum, will be extracted the purpose that gas compresses, as shown in Figure 2.

The principle of air compression: its working procedure is the same with the vacuum procurement process, just change the structural type that vacuum line is connected with vacuum system, vacuum line is communicated with atmosphere by air filter, make this equipment when work, vacuum chamber is directly taken out atmosphere, the pressurized air that pressing chamber is discharged is pressed into collecting container by gas exhaust piping, promptly obtains pressurized air, as shown in Figure 3.

Major character of the present invention is: oil cylinder, vacuum chamber, air compression chamber are one, vacuum chamber and gas pressing chamber do not have the gas leak phenomenon of motive sealing place between piston shaft and the axle sleeve, thereby the energy gas clean-up is done the requirement that the two-stage structure design just can obtain condition of high vacuum degree by this principle.

Further feature of the present invention is: because hydraulic transmission mechanism, vacuum acquisition mechanism and air compressing mechanism are combined into a mechanism, make its designs simplification, volume-diminished.

Another feature of the present invention is: because piston is in oil cylinder, is in good lubricating condition and moves reciprocatingly, thereby guarantee that sports safety is reliable, can do long-time running, can reduce noise again.

The present invention can reach the purpose of a tractor serves several purposes with gas compression again, thereby can further enlarge its application area owing to can obtain vacuum.

Claims (6)

1, a kind of oil pressure reciprocating vacuum pump and compressor.Feature of the present invention by, oil cylinder, two pistons, piston shaft, bleed cut down, exhaust is cut down, vacuum line, reversing bar and changement, oil supply pipeline, oil feed pump, fuel tank etc. are partly formed.

2, require said oil cylinder in 1 according to claim, it is characterized in that in-oil cylinder median septum is divided into two independent sectors with oil cylinder, again by two pistons again two independent sectors that are divided into separated into two parts again, form vacuum chamber, pressing chamber and A, two hydraulic chamber of B respectively, oil cylinder, vacuum chamber, air compression chamber three Room are integrated.

3, require said two pistons, piston shaft in 1 according to claim, it is characterized in that: two pistons are linked into an integrated entity by piston shaft, reach two-piston can be synchronously during with the operating mode of stroke, work two-piston and oil cylinder two ends form vacuum chamber and pressing chamber respectively and finish acquisition vacuum and compressed-air actuated work, this structural type has been eliminated the motive sealing gas leak phenomenon that has between the axle of the vacuum chamber of general vacuum pump and compressor and pressing chamber and the axle sleeve, thereby has improved the degree of vacuum that is obtained.

4, require said reversing bar and commutation mechanism in 1 according to claim, it is characterized in that: reversing bar is installed on the median septum of oil cylinder inside, two pistons just can change the position of reversing bar automatically when motion, change the direction of changement fuel feeding and oil return in oil cylinder simultaneously by reversing bar, and reach the moving direction of two pistons of automatic change and piston shaft and in oil cylinder, do continuous to-and-fro motion.

5, according to claim require in 1 said bleed to cut down to cut down with exhaust it is characterized in that: these two kinds of moving direction of cutting down all are unidirectional, all can not do the contrary direction work of defined direction.Bleed only to cut down and when forming vacuum chamber, open wide, when forming pressing chamber, close automatically to the vacuum chamber direction.Exhaust is cut down when forming vacuum chamber to be compressed by outdoor gas and is closed, and is compressed gas and opens when forming pressing chamber.

6, according to claim require in 1 said by oil cylinder, two pistons, piston shaft, bleed cut down, exhaust is cut down, vacuum line, reversing bar and changement, oil supply pipeline, oil feed pump, fuel tank etc. are partly formed, it is characterized in that: by oil feed pump, oil supply pipeline, reversing bar and changement, make two pistons and piston shaft in oil cylinder, do the continuous reciprocating while, after making the cylinder chamber at two-piston two ends form two volumes of vacuum and air compression respectively, cut down the effect of cutting down with exhaust and be issued to that vacuum obtains and the purpose of gas compression bleeding again.This kind structure just obtains kind of the mechanism of integrating of mechanism, gas compression mechanism to hydraulic transmission mechanism, vacuum.

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