Air valve device

Abstract

The invention relates to an air valve device. The air valve device comprises an air valve body, and a sealing device; the air valve body is arranged in a control guide pipe of a multipath pipe casting; the sealing device is sleeved on the air valve body; the air valve device is characterized by also comprising a trigger device which is arranged between the air valve body and an external stroke indication device and comprises a linkage trigger rod of which one end is connected with the air valve body, and a trigger button connected with the other end of the linkage trigger rod; and the stroke indication device is arranged on the outer side of the control guide pipe of the multipath pipe casting, matched with the trigger device and corresponds to the trigger device. As stroke indication marks which are engraved according to colors at intervals, and a trigger button are arranged, the stroke process of the air valve body connected with the trigger device in the control guide pipe of the multipath pipe casting can be displayed intuitively; according to the brightness and the darkness of a working indication lamp, the air valve device can show whether the air valve body is closed totally so as to remind an operator of keeping mixing materials or not, so the problem of product quality can be avoided, and the potential hazard caused by blind manual inspection of the operator who does not know the closed state.

Description

technical field [0001] The invention relates to a valve device, in particular to a mixer valve device with stroke indication and working state indication. Background technique [0002] The valve device is usually set in the three-way pipe fitting of the mixer, controlled by air pressure, and the discharge system at the bottom of the mixer is determined to be opened or closed by the different positions of the valve device in the control conduit of the three-way pipe fitting. The material is put into the mixing bin of the mixer, and when the mixing operation is performed, the valve device is closed, pushed by the pressure generated by the air pressure, and closely fits with the outlet of the mixing bin, so that the mixing bin and the discharge port of the mixer are Isolation; when the mixing is finished, the valve device is opened, the mixing bin is connected with the discharge port, and the mixture is discharged. [0003] However, the existing valve device has great hidden d...

AI Technical Summary

Problems solved by technology

[0003] However, the existing valve device has great hidden dangers in product quality and safety.

When the valve device is not closed flexibly, or the valve device is not tightly attached to the outlet of the mixing bin due to the blockage of the mixed material, when the mixing operation is performed again, the incompletely mixed material will never be closed tightly. The gap with the mixing bin leaks, causing product quality problems

[0004] On the other hand, because the existing valve device does not have the function of working state indication and stroke indication, when the valve device is blocked, the operator will clean it by hand in order to judge whether the valve device is closed or where the valve device is traveling in the control duct. Exhausting the valve for inspection often leads to safety accidents, and the fingers are pinched or pinched off by the valve device that continues to be propelled by air pressure.

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