US 12,138,643 B2
Self-sealing pump and methods of manufacture and use thereof
Yu Yang, Taicang (CN)
Assigned to SUZHOU GERPMAN INDUSTRIAL CO., LTD., Taicang (CN)
Filed by Suzhou Gerpman Industrial Co., Ltd., Taicang (CN)
Filed on Oct. 21, 2022, as Appl. No. 17/971,349.
Claims priority of provisional application 63/388,231, filed on Jul. 11, 2022.
Claims priority of application No. 202122591658.2 (CN), filed on Oct. 27, 2021.
Prior Publication US 2023/0131081 A1, Apr. 27, 2023
Int. Cl. B05B 11/10 (2023.01); F04B 7/00 (2006.01)
CPC B05B 11/1042 (2023.01) [F04B 7/0088 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A self-sealing pressing and discharging actuator, which is fixedly connected to a pump body assembly and comprises a use state as a directional reference, the actuator comprising:
an actuator body with a discharge cavity inside;
a nozzle connecting the discharge cavity with an external atmosphere is connected to a side end surface of the actuator body;
a plug positioned in the discharge cavity,
wherein an end of the pump body assembly is connected to a limit rod, a central axis of which is perpendicular to a central axis of the plug,
wherein the limit rod is in communication with an inside of the pump body assembly and an inside of the nozzle,
wherein an end of the limit rod is slidingly connected to a tapered surface of the plug enabling the plug to elastically stretch and slide along an axial direction of the nozzle,
wherein the plug has an avoidance state for opening the nozzle and a blocking state for closing the nozzle,
wherein a middle section of the plug corresponding to the limit rod is formed with a connection comprising the discharge cavity,
wherein a tapered groove is formed on a tapered groove of the plug with a first tapered surface and a first stop surface,
wherein the limit rod is formed at the corresponding tapered groove and there is a tapered plane protrusion connecting the inside of the limit rod and an outside of limit rod, wherein a second tapered plane and a second stop surface are formed on the tapered plane protrusion,
wherein the first tapered plane is along a first plane, the two tapered surfaces being slidably matched such that the first stop surface stops at the second stop surface, so that the blocking has an avoidance state,
wherein an inner annular wall is formed on the actuator body and is located below the discharge cavity in the axial direction of the actuator body, a guide groove being provided on the inner annular wall corresponding to flange in the axial direction, the flange being slidably fitted in the guide groove, and
wherein the limit rod is inserted in the inner annular wall at the upper section above the stop plate, and wherein an inner channel of an inner ring is sealed with an inner surface of the inner annular wall via a sealing ring.