Schwimmerventil

摘要

1,151,115. Valves. A. SCHOEPE, and F. E. SCHMUCK. 1 June, 1967 [23 June, 1966], No. 36959/68. Divided out of 1,151,114. Heading F2V. A float valve 40, for maintaining constant the level of liquid in a container 24, comprises a housing having upper and lower parts 80 and 90, respectively, the former part having integrally formed therewith a rigid float guide 34 and the latter part being supported by a casing member 54 resting on the flange 46 of a generally conical inlet member 42, 48, 50, 52. The two parts of the housing are detachably secured together by a bayonet joint provided by forming on the housing lower portion 90 circumferentially spaced and inwardly projecting engagement flanges 160 which slidably engage and overlie circumferentially spaced outwardly projecting flanges 162 formed on the housing upper portion 80. The degree of relative rotation between the two housing portions is limited by a stop member 164. The guide is generally rectangular in cross-section and is formed with two opposite continuous sides 156, the remaining opposite sides 158 being formed with latticed-grooves therein. The float is disposed slidably but non- rotatably on the guide such that rotation of the float causes rotation of the guide and hence of the housing upper part and consequential disengagement of the two housing parts. Between the housing parts is disposed a diaphragm 82 composed of three interconnected concentric parts 100, 96, 92 of which only the central part 96 is movable towards and away from a seat 86 as a result of the presence or absence respectively of liquid in a chamber 108 formed between the diaphragm and housing upper part, such motion of the part regulating the flow of liquid between the inlet member and an outlet port 60 from which port liquid passes through channels in the casing 54 and finally through a slot 78 into the container. The quantity of fluid in the chamber 108 is regulated by a pin 84 which has sections of varying diameter, some of which are grooved, and is movable, to permit flow from the inlet to the chamber or from the chamber to an exhaust opening formed in the housing upper part, in dependence on the position of the float, the pin being connected to the float by links 38, 36. The nature of the pin and casing ensures that solid material is deposited in the casing, from which it can be subsequently removed upon separation of the housing parts, and that no such material enters chamber 108.