Multiple-blade closed air valve

A multi-blade, air valve technology, applied in the direction of lift valve, valve device, engine components, etc., can solve the problems of difficult sealing, hidden leakage, leakage, etc., and achieve the effect of solving difficult sealing and good sealing effect.

CN105351540AActive Publication Date: 2016-02-24DIANDUO ELECTROMECHANICAL ENG JIANGSU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-02-24

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Abstract

The invention relates to a multiple-blade closed air valve which comprises a square valve body, a plurality of blades and sealing rings, wherein rows of openings are formed in sequence in the square valve body, and the end part of each opening is arc-shaped; the blades are correspondingly arranged in the openings through first fixing components, and the end parts of all the blades are arranged to be arc-shaped, and are matched with the openings; and the sealing rings are arranged on the outer sides of the blades through second fixing components in a surrounding manner, and are in contact with the inner wall of the square valve body. The multiple-blade closed air valve provided by the invention can effectively solve the problem of leakage hazards between the blades, between the blades and the square valve body, and at the right-angle end parts of the blades, and has a good sealing effect.
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Description

technical field

[0001] The invention relates to an airtight damper, in particular to a square multi-blade airtight damper, which is mainly applicable to process exhaust pipes of manufacturing enterprises such as semiconductors, microelectronics and liquid crystal panels. Background technique

[0002] Process exhaust pipes used in manufacturing companies such as semiconductors, microelectronics, and liquid crystal panels, due to their large diameters and hoisting above buildings, cannot be completely sealed by precision casting and machining like water pipe valves. Such as figure 1 As shown, the existing large-diameter airtight air valve generally adopts a multi-blade linkage structure after considering the problem of excessive single-axis force load. But this kind of structure has the unavoidable hidden danger of leakage described below.

[0003] 1. There is a hidden danger of leakage between two adjacent blades 2: the existing large-diameter airtight air valve generally u...

Examples

Embodiment Construction

[0024] The following combination Figure 2 ~ Figure 6 , a preferred embodiment of the present invention is described in detail.

[0025] Such as figure 2 As shown, the multi-blade airtight air valve provided by the present invention includes: a square valve body 1, such as image 3 As shown, there are multiple rows of openings 11 arranged in sequence, and the end points of each opening 11 are arranged in a circular arc shape; a plurality of blades 2, each blade 2 is correspondingly arranged in each opening 11 through the first fixing assembly , and the end point of each blade 2 is arranged in an arc shape, matching the opening 11; the sealing ring 3, such as Figure 4 As shown, it is surrounded by a plurality of second fixing components on the outside of the vane 2 and is in contact with the inner wall of the square valve body 1 .

[0026] Such as Figure 5 As shown, the second fixing component includes: an upper clamping plate 41, which is covered and arranged on the upp...