Anti-high-temperature motor locking preventing smoke butterfly valve

Abstract

The invention discloses an anti-high-temperature motor locking preventing smoke butterfly valve. The anti-high-temperature motor locking preventing smoke butterfly valve comprises a flange, a matchedpipe and a smoke baffle; the flange is installed at the front end of the outer side wall of the matched pipe, and a bracket is installed at the top of the outer side wall of the matched pipe; the smoke baffle is installed in an inner cavity of the matched pipe; a first baffle shaft is installed at the top of the outer side wall of the matched pipe, and a second baffle shaft is installed at the bottom of the outer side wall of the matched pipe; and the top and the bottom of the outer side wall of the matched pipe are both provided with installation holes. According to the anti-high-temperaturemotor locking preventing smoke butterfly valve, through anti-high-temperature ceramic bushings installed on the outer side wall of the first baffle shaft and the outer side wall of the second baffle shaft, the fault that the smoke baffle and the baffle shafts are locked when the temperature is high and condensate water is generated can be avoided, and normal using of a smoke servo motor is ensured; and through combining of the matched pipe and the smoke baffle, the matched pipe and the smoke baffle are integrated, the installing man-hour is shortened, the manufacturing cost and the manpower cost are reduced, and the butterfly valve is suitable for wide application and popularization.

Description

technical field [0001] The invention relates to the field of butterfly valves, in particular to a flue gas butterfly valve with high temperature resistance and preventing motor from being stuck. Background technique [0002] The current low-nitrogen burner adopts the flame division, premixing and classification technology used under the requirement of NOx≤80mg, and then introduces the external flue gas circulation technology to increase the flue gas flow rate, reduce the intracranial temperature, and suppress the formation of NOx, while the existing The flue gas recovery devices all use butterfly valves and flue gas piping, which increases manufacturing and labor costs. Under the action of the high temperature of the external flue gas and the condensed water generated, the butterfly valve shaft is easily stuck, resulting in abnormal rotation and damage to the flue gas servo motor. Phenomenon. Therefore, we propose a flue gas butterfly valve with high temperature resistance ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a flue gas butterfly valve with high temperature resistance to prevent the motor from being stuck, which solves the problem that the existing flue gas recovery devices proposed in the background technology all use butterfly valves and flue gas piping, which increases manufacturing and labor costs. Under the action of high gas temperature and condensed water, the butterfly valve shaft is easy to get stuck, resulting in abnormal rotation and damage to the flue gas servo motor.

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