Low windage resistance mitre gate

Abstract

The invention relates to a low windage resistance mitre gate. The mitre gate comprises a square frame-shaped valve body, more than one vane arranged inside the square frame-shaped valve body, and a power transmission mechanism used for driving the vane to rotate, wherein the square frame-shaped valve body comprises two long side frames and two short side frames fixed at the two ends of the two long side frames. The low windage resistance mitre gate is characterized in that a slot is formed on an inner side of the long side frames; a sealing aluminum plate provided with a sealing boss is plugged in the slot; an upper surface and a lower surface of the vane are arched surfaces; sealing rubber strips are fixed on end faces of two sides of the vane; a translot of which the mouth faces upwards is formed on an outer side face of the short side frames; a power device fixing and mounting plate is plugged in the translot; a power device is provided with more than three mounting and fixing feet; an insertion hole which consists of a plurality of through holes transversely and uniformly distributed is formed on the fixing and mounting plate which corresponds to the mounting and fixing feet; adjacent through holes are overlapped with one other; and the center distance of two adjacent through holes is shorter than the distance from the outer edge of the sealing boss to the root part of the sealing boss. Compared with the prior art, the low windage resistance mitre gate has the advantages of simple production process, low manufacturing cost, and interchanging of most parts of the mitre gates of different sizes.

Description

technical field [0001] The invention relates to a ventilation valve. Background technique [0002] Existing valves for air-conditioning, the miter gate, are composed of a square-shaped valve body, more than two blades arranged in the square-shaped valve body, and a power transmission mechanism that drives the blades to rotate. The blade gear, the driving gear and the power device at the end of each blade, the power device drives the driving gear to rotate, the driving gear drives the blade gears that mesh with each other to rotate, and each blade gear drives each blade to open in a herringbone shape or the two sides of each blade are stacked head to tail Close the box-shaped valve body port together. The size of the miter gate with this structure is ever-changing due to the square frame-shaped valve body according to the actual requirements. For each size, it is necessary to manufacture blades and blade gears of corresponding sizes to cooperate with it, and the position of ...

AI Technical Summary

Problems solved by technology

The size of the miter gate with this structure is ever-changing due to the square frame-shaped valve body according to the actual requirements. For each size, it is necessary to manufacture blades and blade gears of corresponding sizes to cooperate with it, and the position of the power unit is also required. Different designs are required. In this way, not only the production process is complicated and difficult, but also the cost is high. Most of the accessories of the miter gates of various sizes cannot be interchanged, which brings great inconvenience to maintenance; in addition, due to the existing Some accessories including sealing rubber strips need to be installed on the technical blades, resulting in uneven surface of the blades, which makes the wind resistance of the blades relatively large

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