A kind of two-way driving operation system

Abstract

The invention discloses a two-way drive operation system. The two-way drive operation system comprises a ball valve, a first three-way valve, a second three-way valve, a third three-way valve, a hydraulic cylinder, a hydraulic pump, an energy accumulator and an oil tank; the hydraulic pump outputs hydraulic oil through the one-way valve, hydraulic oil output from the hydraulic pump is connected tothe two cavities of the hydraulic cylinder through two parallel passages which are connected in parallel, the ball valves are arranged in the two parallel passages in parallel, wherein the one-way valve and the first three-way valve are further connected between one ball valve and one cavity of the hydraulic cylinder in series, and the one-way valve and the second three-way valve are connected between the other ball valve and the other cavity of the hydraulic cylinder in series; the third end of the first three-way valve and the third end of the second three-way valve are respectively connected with one end of the third three-way valve, the other two ends of the third three-way valve are respectively connected with an energy accumulator and an oil tank, the output end of the hydraulic pump through the one-way valve, and the output end of the energy accumulator is connected to the output end of the hydraulic pump through the one-way valve.

Description

technical field [0001] The invention relates to the related field of fluid control, in particular to a two-way driving operation system. Background technique [0002] The hydraulic cylinder execution system is a commonly used operating system, which controls the reciprocating motion of the hydraulic cylinder through the main hydraulic drive circuit and the hydraulic drive branch circuit for driving. Ball valves are common components among them. [0003] In actual use, the existing operating system and the ball valve therein have the following problems: [0004] 1. The operating system in the prior art, especially the system driven by the hydraulic cylinder, is not flexible enough, and cannot flexibly drive the hydraulic cylinder to move in both directions through multi-level pressure changes. [0005] 2. The operating system in the prior art, especially the hydraulic cylinder in the system, does not recover enough energy, or although it has an energy recovery device such a...

AI Technical Summary

Problems solved by technology

[0004] 1. The operating system of the prior art, especially the system driven by the hydraulic cylinder, is not flexible enough, and cannot flexibly drive the hydraulic cylinder to move in both directions through the pressure changes of multiple gears

[0005] 2. The operating system of the prior art, especially the hydraulic cylinder in the system, does not recover enough energy, or although it has an energy recovery device such as an accumulator, it is not systematic and has a single function

[0006] 3. Ball valves in the prior art, especially large ball valves, are inflexible and bulky when closing, and are likely to cause strong water hammer. Multiple opening and closing have an impact on the service life of related accessories

[0007] 4. Ball valves in the prior art, especially large ball valves, are difficult to achieve flexible gear adjustment and have a single function

[0008] 5. Ball valves in the prior art, especially large ball valves, contain too many parts and are not compact in structure. For this, a small amount of prior art provides a compensation and preloading scheme for the spring valve seat, but this scheme leads to more and more parts. Miscellaneous, in case of spring failure, it will cause the entire valve seat system to fail, resulting in an accident

[0009] 6. The ball valve in the prior art uses an integrated valve seat, which has a single function, poor fault tolerance and inclusiveness, and becomes invalid after wear and tear

[0010] 7. In the ball valve of the prior art, a small amount of pressure ring is used to adjust the pre-tightening of the valve seat. However, due to the large number of parts, and the pressure ring is pressed by the pressure plate, the pressure ring is pressed against the seat, and the stability of the compression link is poor.

[0011] 8. The ball valves in the prior art have adjustment and preload compensation in the horizontal direction, but lack vertical adjustment and preload compensation.

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