Plunger case seal structure

The utility model discloses a plunger case seal structure, overlap including cylinder body, plunger, uide bushing, plunger gland, pressure, the cooperation is provided with the uide bushing and presses and overlap between cylinder body and the plunger, is provided with the sealing washer between uide bushing and the pressure cover, and the pressure is sheathe the cooperation in and is provided with the plunger gland, and plunger gland and cylinder body pass through double -screw bolt connection setting, its characterized in that the sealing washer is provided with the position sleeve outward, be provided with O type sealing washer on the position sleeve. The utility model has the advantages of simple structure and reasonable design, through position sleeve and the O type sealing washer that sets up, ensure that the plunger gland passes through the axial displacement that the uide bushing was injectd to the position sleeve, uide bushing " suspension " problem above the sealing washer can be effectively solved, and the lip wearing and tearing of V -arrangement sealing washer are reduced, improve the life of sealing washer.