Oil-gas change-over switch

Abstract

The invention discloses an oil-gas change-over switch which comprises a base, a first rotating shaft, a second rotating shaft and a steel ball. The second rotating shaft is hermetically and rotatably connected with the second mounting cavity, and the steel ball is connected with the second rotating shaft; the first rotating shaft is hermetically and rotatably connected with the open end of a first mounting cavity of the base, and connected with the steel ball; a first sealing gasket is arranged at the end, close to the first mounting cavity, of a first gas guide pipe, and a second sealing gasket is arranged at the end, close to the first mounting cavity, of a second gas guide pipe; the steel ball is arranged between the first sealing gasket and the second sealing gasket, and both the first sealing gasket and the second sealing gasket are constantly attached to the steel ball; and the steel ball is provided with a vent hole for communicating the first gas guide pipe with the second gas guide pipe. According to the oil-gas change-over switch, a rubber seal used in a traditional product is replaced through cooperation of the steel ball, the first sealing gasket and the second sealing gasket, and the service life of the oil-gas change-over switch is effectively prolonged; the steel ball, the first sealing gasket and the second sealing gasket are easy to produce, and the machining precision of the steel ball, the first sealing gasket and the second sealing gasket is lower than that of a rotating shaft seal; and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field, in particular to an oil-gas transfer switch. Background technique [0002] Currently on the market, oil and gas dual-purpose generators usually use oil-gas transfer switches to switch between gas or fuel oil, and rubber seals or shaft seals are generally used for oil-gas transfer switches. However, when the oil-gas transfer switch is sealed with rubber, after the rubber is aged, it will cause the switch to rotate difficult or unable to rotate, which reduces the service life; if the oil-gas transfer switch uses a shaft seal, ultra-high-precision shaft processing is required to achieve sealing, which improves production. cost. Contents of the invention [0003] In view of the above problems, the present invention proposes an oil-gas changeover switch, which effectively prolongs the service life and reduces the production cost. [0004] The invention provides an oil-gas conversion switch, which includes a ...

AI Technical Summary

Problems solved by technology

However, when the oil-gas transfer switch is sealed with rubber, after the rubber is aged, it will cause the switch to rotate difficult or unable to rotate, which reduces the service life; if the oil-gas transfer switch uses a shaft seal, ultra-high-precision shaft processing is required to achieve the seal, which improves production. cost

Images