Patent ID: 11873914
Assignee: BUENO TECHNOLOGY CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. The buffer valve as claimed in claim 1, wherein the buffer valve includes a valve body, the breathing hole, the floating ball, a releasing mechanism, a retaining ring, and an adapter; the valve body has a cylindrical shape and includes the inner chamber, a connecting chamber, a partition portion, and the outer gas hole; the breathing hole includes the inner accommodating chamber and the inner gas hole, the breathing hole is disposed on an outer ring wall of the pneumatic chamber; an outer ring surface of the valve body is coupled and sealed with the inner accommodating chamber of the breathing hole; the inner gas hole is disposed at a position where the inner accommodating chamber deviates from the axis of the inner chamber and is proximate to the inner annular surface; the partition portion is disposed between the inner chamber and the connecting chamber, the partition portion has the outer gas hole to communicate with the connecting chamber and the inner chamber, the outer gas hole is located on the axis; an inner diameter of the connecting chamber is greater than that of the inner chamber, the retaining ring and the adapter are secured in an airtightness manner; the adapter is installed at an open end of the connecting chamber and is located outside the retaining ring, the adapter is configured to connect the gas connector and the high-pressure pipeline and communicates with the pneumatic chamber; the retaining ring has a cylindrical shape and includes a shaft hole and at least one ventilation hole, the retaining ring is secured to a bottom of the connecting chamber and pressed against the partition portion, the shaft hole has an inner diameter less than that of the outer gas hole, the ventilation hole is in communication with the outer gas hole; the releasing mechanism includes an adjusting shaft, the retaining ring, a retaining nut set, and a spring; the adjusting shaft includes an external thread, a ball seat and a shaft, the disc-shaped ball seat is located at one end of the adjusting shaft and has a concave spherical surface, the external thread is located at another end of the adjusting shaft; in assembly, the retaining ring is firstly locked inside the connecting chamber, the adjusting shaft is inserted in the spring with its tail end passing through the outer gas hole and the shaft hole from the side of the inner chamber, so that the external thread is located in the connecting chamber to keep the ball seat at the side of the inner chamber, the spring is sleeved on the shaft and pressed between the ball seat and the retaining ring; the inner diameter of the outer gas hole is greater than an outer diameter of the ball seat, so that the adjusting shaft can move back and forth in the inner chamber and the outer gas hole freely; the shaft is in sliding fit with the shaft hole to support the adjusting shaft; the external thread of the adjusting shaft extends out of the shaft hole, the retaining nut set is disposed on the external thread to ensure that the adjusting shaft will not be loosened from the retaining ring when the high-pressure gas is filled; the shielding action is that when the high-pressure gas brings the floating ball to be attached to the ball seat, a pressing force Fp generated by the pressure difference ΔP generated by the high-pressure gas is applied to the floating ball, the spring is pushed back by the ball seat to generate a compression displacement ΔX and the elastic force Fs, the compression displacement ΔX is the compression amount of the spring, Fp≥Fs; the releasing action is that when the pressing force Fp generated by the pressure difference ΔP cannot resist the elastic force Fs of the spring, Fp≤Fs, the floating ball is pushed away and moved to the inner chamber without covering the outer gas hole; the releasing mechanism is not restricted by the direction of the weight W of the floating ball and the direction of the pressing force Fp; the releasing mechanism is reliably completed due to the ratio of the outer diameter d1 of the floating ball to the inner diameter D2 of the inner chamber, d1/D2≤0.8; the outer diameter d1 of the floating ball is greater than the inner diameter d3 of the outer gas hole, the cone angle 2θ, 15°≤θ≤80°; the adjusting mechanism, the shielding time Δt is adjusted by the weight W and the outer diameter d1 of the floating ball and the elastic force Fs of the spring, and the adjustment of the elastic force Fs refers to adjusting the elastic coefficient of the spring; the adjusting mechanism includes the retaining nut set, the relative position of the ball seat of the adjusting shaft relative to an opening of the outer gas hole at the side of the inner chamber can be set to ensure that the floating ball can indeed complete the shielding action and the releasing action.