Pressure-resistant cylinder limiting device

The utility model relates to the technical field of water pumps, in particular to a pressure-resistant cylinder limiting device which comprises an end cover and a pressure-resistant cylinder, a first limiting part is arranged on the pressure-resistant cylinder, the axis of the first limiting part does not coincide with the axis of the pressure-resistant cylinder, a second limiting part is arranged on the end cover, and the axis of the second limiting part does not coincide with the axis of the pressure-resistant cylinder. The second limiting piece is located on the moving path of the first limiting piece and used for preventing the first limiting piece from moving. The device has the advantages that the pressure-resistant cylinder can be limited, and the rotation amplitude of the pressure-resistant cylinder is reduced. 本申请涉及一种耐压筒限位装置，涉及水泵的技术领域，包括端盖和耐压筒，所述的耐压筒上设有限位件一，所述的限位件一的轴线和所述的耐压筒的轴线不重合，所述的端盖上设有限位件二，所述的限位件二位于所述的限位件一的移动路径上，用以阻止所述的限位件一移动。本申请具有能够对耐压筒进行限位，降低耐压筒转动幅度的优点。