Lossless composite connecting device for positive pressure hair dryer or negative pressure hair dryer for mine

Abstract

The invention relates to a lossless composite connecting device for a positive pressure hair dryer or a negative pressure hair dryer for a mine. In order to filling gaps in the prior art, the losslesscomposite connecting device includes a convex steel ring, a concave steel ring and a plurality of adjustable steel ring clamps, wherein the convex steel ring and the concave steel ring are in a flatring shape, a ring-shaped bulge whose outer edge of the section is in an arc shape is arranged on the inner side of the convex steel ring, a ring-shaped groove whose outer edge of the section in an arc shape is formed in the inner side of the concave steel ring, the convex steel ring and the concave steel ring can be overlapped with each other, the ring-shaped bulge of the convex steel ring and the ring-shaped groove are embedded with each other, the adjustable steel ring clamps include substrates, fixing clamping arms, movable clamping arms and T-shaped screw rods, when the convex steel ringand concave steel ring are overlapped, the convex steel ring and the concave steel ring can be clamped by the front ends of the movable clamping arms and fixing clamping arms of the adjustable steel ring clamps, and the convex steel ring, the concave steel ring and port flanging of the positive or negative pressure hair dryers between the convex steel ring and the concave steel ring are fixedly clamped together. According to the lossless composite connecting device for the positive pressure hair dryer or the negative pressure hair dryer for the mine, the hair dryer is not destroyed, air leaking of the hair dryer is reduced, and the lossless composite connecting device can be widely applied to hair dryer connecting work.

Description

technical field [0001] The invention relates to an air cylinder connection device, in particular to a non-destructive combined connection device for mine positive pressure air cylinder or negative pressure air cylinder. Background technique [0002] Due to the improvement of mechanized operations in underground coal mines, the excavation shaft has a large section and a long air supply distance. In order to ensure the air volume supply, a high-power fan is required. The increase in fan power leads to an increase in the pressure in the negative pressure air cylinder, which can easily lead to the disconnection of the connection of the air cylinder, especially during the switching of the fan, the disconnection of the air cylinder is more frequent, which seriously affects the construction and safety of the shaft excavation. At the same time, the traditional method of reinforcing and connecting the air duct with iron wire needs to be eye-catching on the air duct. The holes produce...

AI Technical Summary

Problems solved by technology

The increase in fan power leads to an increase in the pressure in the negative pressure air cylinder, which can easily lead to the disconnection of the connection of the air cylinder, especially during the switching of the fan, the disconnection of the air cylinder is more frequent, which seriously affects the construction and safety of the tunnel excavation

At the same time, the traditional method of reinforcing and connecting the air duct with iron wire needs to be eye-catching on the air duct. The holes produced by the eyes are fixed with iron wires. On the one hand, it will cause air leakage at the hole. Tearing, the hole is getting bigger and bigger, and when it gets bigger to a certain extent, the hair dryer must be replaced, causing waste, and not using the hair dryer to recycle, causing waste

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