An inclined plane air duct flange fastener and using method thereof

Abstract

The invention relates to an inclined plane type air duct flange fastener and a using method thereof, belongs to the technical field of an ventilation air conditioning and smoke control system and aims at the problem that in the mounting process of existing air ducts, a mounting operation space at the joint of flanges is narrow and fastening of flange bolts cannot be completed so as to cause the condition that the air ducts cannot be effectively abutted. The inclined plane type air duct flange fastener comprises a right trapezoid shell and a right trapezoid sliding block, wherein the inclined edge of the shell is provided with a slide; the sliding block is arranged in the slide of the shell; the sliding block is connected with the shell by a bolt; the straight edge of the shell is in parallel to that of the sliding block; the inclined edge of the sliding block is arranged in the slide, and thus, rotation of the bolt drives the sliding block to slide along the slide so as to regulate the size of a gap between the straight edge of the shell and the straight edge of the sliding block. The using method comprises the following steps: firstly, buckling a gap between the straight edge of the shell and the straight edge of the sliding block between two outer flanges; then rotating the bolt to gradually reduce the gap until fastening of the two outer flanges is completed, so that a first air duct and a second air duct are connected in a sealing manner.

Description

technical field [0001] The invention belongs to the technical field of ventilation, air-conditioning and smoke prevention and exhaust systems, and in particular relates to an inclined-plane air duct flange fastener and a using method thereof. Background technique [0002] After the air duct system is installed, the system tightness test should be carried out, and the air leakage test should meet the requirements of the "Code for Construction Quality Acceptance of Ventilation and Air Conditioning Engineering" GB50243-2002. However, in the process of building construction, there will be situations where there is no room for operation on two sides of the air duct connection, especially in areas such as vertical pipes in pipe wells and horizontal pipes in corner areas. In this way, when the air duct is connected, since the flange bolts of the air duct in this area cannot be fastened normally, it is very easy to cause the air leakage of the air duct in this area to exceed the sta...

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Problems solved by technology

[0004] In view of the problem that the installation and operation space of the flange connection is narrow during the installation process of the air duct, and the fastening of the flange bolts of the air duct cannot be completed, resulting in the problem that the air duct cannot be effectively connected, the purpose of the present invention is to provide an inclined-plane air duct method The flange fastener and its use method are used to fasten the flange of the air duct under the condition of limited installation and operation space, so as to ensure the effective sealing connection of the air duct

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