Protecting device for instrument of instrument valve

Abstract

The invention discloses a protecting device for an instrument of an instrument valve. The protecting device for the instrument of the instrument valve comprises an instrument valve body and the instrument connected with the instrument valve body. The instrument is located above the top of the instrument valve body. Fixing rods are arranged on the two sides of the instrument. One end of each fixing rod is fixed to the top of the instrument valve body, and the other ends of the fixing rods are fixedly provided with a protective shell with one open side. The instrument is located in the protective shell. The side, far away from the open side, of the protective shell is fixedly provided with a fixing block. The top of the fixing block is fixedly provided with a limiting rod. A connection rod is arranged between the limiting rod and the protective shell. One side of the connection rod is fixedly provided with a connection column. The protecting device for the instrument of the instrument valve can prevent dust from covering the instrument, protect the instrument, prevent external factors from directly damaging the instrument and prolong the service life of the instrument through cooperative use of the arranged structures of a push button, the connection column, the connection rod, a connection cover, a sliding plate, the protective shell and the like.

Description

technical field [0001] The invention relates to the technical field of instrument devices, in particular to a protection device for instrument valves and instruments. Background technique [0002] An instrument valve is a pipeline accessory. It is a device used to change the passage section and medium flow direction, and control the flow of conveying medium. The sealing performance of the instrument valve refers to the ability of each sealing part of the instrument valve to prevent the leakage of the medium, which is the most important technical performance index of the instrument valve. There are three sealing parts of the instrument valve: the contact between the opening and closing parts and the two sealing surfaces of the valve seat; the matching place between the packing and the valve stem and stuffing box; The first one is called internal trickle, also known as sleek close, that can affect the capability of device to reducing medium. For cut-off valves, internal lea...

AI Technical Summary

Problems solved by technology

[0003] At present, the instruments of instrument valves used in dark environments generally do not have protective devices. Therefore, external environmental factors will directly affect the instruments. After a long period of action, the instruments will be damaged and cannot be used.

In addition, the meter has no lighting measures in the dark environment, which makes it very troublesome for the meter reader to read the meter

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