A check valve rocker detection and adjustment device

Abstract

The invention relates to a detection and adjustment device for a check valve rocker, which includes a valve body, a valve cover, a valve seat, a rotating shaft, a first rocker and a valve disc. The movable inner cavity and outflow channel are fixed. The valve cover is fixed on the upper middle of the valve body by bolts and is used to close the opening of the valve body at the upper end of the inner cavity. The valve seat is fixedly installed between the inflow channel and the cutout of the inner cavity, and the shaft is fixed Installed on the cavity wall of the inner cavity at the upper end of the valve seat, one end of the first rocker is rotatably connected with the rotating shaft, the valve is hinged with the other end of the first rocker, the first rocker is also equipped with a bending degree detection device, and the valve body is located inside A vertical movement fine-tuning device for moving the rotating shaft is provided in the valve wall on one side of the cavity to provide a check valve rocker detection and adjustment device with a reasonable structure, which can detect the bending degree of the rocker and make corresponding adjustments.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a detection and adjustment device for a check valve rocker. Background technique [0002] The check valve is a commonly used valve in the pipeline system, which is mainly installed at the outlet of the pump, and it is used to connect and check the fluid medium in the pipeline system. The existing swing check valve mainly includes a valve body, a valve seat and a check disc. The pin shaft is installed in the inner cavity of the valve. When the medium enters the inner cavity of the valve from the inlet side of the valve, the medium pushes the check valve disc to rotate around the pin shaft to open. When no medium enters the valve inlet side, the check valve disc rotates around the pin shaft. closure. When the check disc rotates and closes around the pin shaft, it is easy to close too fast, resulting in excessive impact force on the sealing surface of the disc sealing surface, whic...

AI Technical Summary

Problems solved by technology

When the check disc rotates and closes around the pin shaft, it is easy to close too fast, resulting in excessive impact force on the sealing surface of the disc sealing surface, which is easy to be damaged; at the same time, when the check disc closes quickly , easy to produce water hammer, resulting in damage to the valve and other hazards. In the prior art, the patent number is CN110388484B, which is a swing check valve. When the valve disc is opened, the rocker drives the rotating shaft and the connecting shaft. Rotate, and then drive the buffer piston to move upward through the spiral groove on the connecting shaft, the one-way valve plate opens, the silicone oil in the upper piston chamber flows into the lower piston chamber through the one-way valve plate, and the valve disc can be opened quickly; when the valve disc is closed, the rocker The rod drives the rotating shaft and the connecting shaft to rotate, and then drives the buffer piston to move downward through the spiral groove on the connecting shaft, the one-way valve plate is closed, and the silicone oil in the lower piston chamber can only flow into the upper piston chamber through the throttling groove, which plays a role in the rotation of the rotating shaft. The function of damping can reduce the closing speed of the disc, reduce the impact, prevent water hammer, and prevent damage to the valve, and the opening size of the throttle groove can be adjusted by adjusting the length of the damping rod extending into the piston chamber through the adjustment component, and then can Adjust the closing speed of the valve clack, but when the medium pressure in the valve fluctuates greatly, the valve clack swings irregularly and easily damages the rocker between the rotating shaft and the valve clack, so that there will be deviations when the valve clack cooperates with the valve seat, and damage Its sealing performance

Images