Opening indicating device of direct burial valve

Abstract

The invention discloses an opening indicating device of a direct burial valve. The opening indicating device of the direct burial valve comprises a shell and an eccentric shaft installed in the center of the shell; a pointer seat, duplex outer gears, a second inner gear ring and a first inner gear ring are installed in the shell, a bearing, a shaft sleeve and a sealing ring are sequentially installed on the eccentric shaft from top to bottom, wherein the bearing and the shaft sleeve are used for reducing kinetic friction, and the sealing ring has a dust-proof effect, and the first inner gear ring is connected with the pointer seat through a third bolt in a fastened mode; the second inner gear ring is installed in a lower base plate through a first bolt in a fastened mode, the duplex outer gears are connected with the second inner gear ring and the first inner gear ring in an engaged mode correspondingly, and a pointer is fixed to the pointer seat; and a dial is fixed to an upper cover, and the pointer points at the dial. According to the opening indicating device of the direct burial valve, the differential gear principle is applied, and opening indicating of the direct burial valve can be displayed on the opening indicating device through transmission of the duplex outer gears; and the device is simple in structure, large in transmission speed ratio, safe and reliable, good in corrosion resistance, long in service life, high in applicability and easy to apply and popularize.

Description

technical field [0001] The invention belongs to the technical field of pipeline valves, and in particular relates to a direct-buried valve opening indication device with simple operation, safety and reliability, large transmission speed ratio and strong applicability. Background technique [0002] As we all know, valves are one of the most widely used equipment in various fluid transportation projects. They are widely used in domestic water systems, water supply and drainage systems, sewage treatment systems, and chemical fluid transportation systems. It is widely used on pipelines for fluid transportation such as electricity and electricity. [0003] However, with the rapid development of urban construction and the increasing concentration of urban residents, the space for urban development has become smaller and smaller, and the negative impact of various pipelines all over the city on urban management has become more and more obvious. In recent years, national and local ...

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Problems solved by technology

[0004] Corresponding to this, there will be some new requirements for the valve equipment required for underground fluid transmission pipelines, such as anti-corrosion, anti-vibration, pressure resistance, etc., which also includes the opening indication of the valve---operated on the ground Valves, how to reliably control the opening of buried valves is a very real problem, especially for those directly buried valves that are driven by a large speed ratio, there has been no ideal solution

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