Fluid power machine

Abstract

The invention discloses a fluid power machine which is characterized in that at least one end of a reversing fluid valve is provided with a barrel-type cylinder body; each barrel-type cylinder body is provided with a piston internally; each piston is connected with a piston rod; each barrel-type cylinder body of the reversing fluid valve is provided with a first piston driving chamber and a second piston driving chamber internally; the reversing fluid valve is provided with a dynamic fluid inlet and a dynamic fluid outlet, and also provided with a first control opening and a second control opening which are communicated with the first piston driving chamber and the second piston driving chamber; the piston rod is provided with a touch slide block; and the touch slide block is matched witha reversing valve plug which is arranged in the inner cavity of the fluid body of the reversing fluid valve. The fluid power machine provided by the invention has the advantages of simple structure, reliability, low cost, strong functions, long reliable working service life and wide application range.

Description

technical field [0001] The invention relates to a fluid power machine, in particular to a fluid power machine powered by gas or liquid. Background technique [0002] Traditional reciprocating pumps, reciprocating compressors, fluid power machines, reciprocating equipment, etc. use the motor's rotational motion to convert it into the reciprocating motion of the crank-link mechanism. The uninterrupted speed change during this motion will greatly damage the moving parts, and the cylinder is affected by the reciprocating motion. The side thrust is large and the work is rough, especially the manufacturing requirements of the crankshaft are high, the cost is high, and the size is limited. Reliability issues and complex structure, the fluid reversing control valve usually uses a cylindrical control valve that moves along the axis to switch, and its valve structure features To increase the control fluid flow, double spools or more spools are arranged in the same valve body. It is d...

AI Technical Summary

Problems solved by technology

[0002] Traditional reciprocating pumps, reciprocating compressors, fluid power machines, reciprocating equipment, etc. use the motor's rotational motion to convert it into the reciprocating motion of the crank-link mechanism. The uninterrupted speed change during this motion will greatly damage the moving parts, and the cylinder is affected by the reciprocating motion. The side thrust is large and the work is rough, especially the manufacturing requirements of the crankshaft are high, the cost is high, and the size is limited. Reliability issues and complex structure, the fluid reversing control valve usually uses a cylindrical control valve that moves along the axis to switch, and its valve structure features To increase the control fluid flow, double spools or more spools are arranged in the same valve body. It is difficult to realize, and the control valve that uses cylindrical movement and switching along the axis at the same time, the high and low pressure areas are sealed only by simple valve sealing rings, which has poor bearing capacity for high-pressure fluids. In addition, the entire valve uses a large amount of sealing rings. There are at least two sealing rings in the low-pressure area. In this order, a single valve core must have a series of sealing components. If one of the sealing rings is damaged, the overall sealing will be affected. Secondly, the above-mentioned gas or liquid control valve is suitable for the controlled gas or liquid medium. There are quite high requirements for cleanliness, and many series of auxiliary equipment are even added for this purpose, which has high cost and poor sealing performance, and directly affects the service life and performance of the product

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