Reciprocating screw vacuum compressor

Abstract

The invention relates to a reciprocating screw vacuum compressor. The compressor is characterized in that a driven wheel is provided with a reciprocating screw transmission mechanism formed by a driven wheel supporting shaft, a gear transmitting and reversing system, hollow shafts, bearing blocks, hollow screw rods, nuts, nut sleeves, connecting sleeves, reversing rods, a spring mechanism and a jaw clutch; tandem piston units in a vacuum compression device formed by cylinders, pistons, sealing connecting pipes, sealing elements A, intermediate separate cavities, sealing elements B, a front separate cavity, a rear separate cavity, three-way intake valves, three-way exhaust valves, intermediate three-way exhaust valves, intermediate three-way intake valves, a main exhaust pipe and a main intake pipe are driven by reversion of the reversing rods in the reciprocating screw transmission mechanism to continuously reciprocate in the cylinders, thus realizing the vacuumizing and compressing functions of the vacuum compressor. The vacuum compressor not only has reasonable design and compact structure, but also has the advantages of energy conservation, no vibration, no noises, conformity with the environmental protection requirement, stable operation, convenience in operation and use and the like.

Description

technical field [0001] The invention belongs to vacuum compression machinery, in particular to a spiral reciprocating vacuum compressor. Background technique [0002] At present, in mechanical products, such as mechanical transmissions of reciprocating vacuum pumps and reciprocating compressors, most of them adopt the transmission mechanism of the crankshaft and the eccentric wheel type driven by the motor mounted on the machine base through belt transmission. The reciprocating motion is realized by using the slider and the connecting rod to cooperate to push the piston. Due to the restriction of the above-mentioned transmission mode, the distribution form of the cylinder body can only be V-shaped, fan-shaped or parallel twin-cylinder type. Due to the periodic inflection point or dead point in the transmission of the crankshaft and the eccentric wheel—that is, the dead point where the output torque is "0"; the transmission will inevitably cause vibration and noise, and the c...

AI Technical Summary

Problems solved by technology

Due to the periodic inflection point or dead point in the transmission of the crankshaft and the eccentric wheel—that is, the dead point where the output torque is "0"; the transmission will inevitably cause vibration and noise, and the crankshaft and eccentric transmission have no booster coefficient; so the power consumption is Large, especially when the compression ratio—discharge pressure / input pressure is large, the power consumption is very uneconomical

This is also the reason why the reciprocating vacuum pump and the reciprocating compressor are independent devices at present; and these independent reciprocating vacuum pumps and independent reciprocating compressors have many parts, are heavy and not compact

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