Manual oppositely-opened multi-vane air amount adjusting valve

Abstract

The invention aims at providing a manual oppositely-opened multi-vane air amount adjusting valve. The manual oppositely-opened multi-vane air amount adjusting valve comprises an adjusting valve frame, vanes, a connecting base, a radial screw, a sleeve, a main shaft, a nut, a control valve, a connecting rod, a connecting screw, a coupler, a connecting rod transmission device, a vane shaft and a shaft sleeve. The manual oppositely-opened multi-vane air amount adjusting valve is characterized in that the connecting base is arranged at the upper end of the adjusting valve frame and connected with the adjusting valve frame, the connecting rod transmission device is arranged inside the adjusting valve frame, the main shaft penetrates the adjusting valve frame and is connected with the connecting rod transmission device, and the lower end of the connecting rod transmission device is rotationally connected with the upper end of the vane shaft; and the vanes are arranged on the vane shaft, and the vanes and the vane shaft are rotationally connected. The manual oppositely-opened multi-vane air amount adjusting valve is provided with the connecting screw and the nut, and therefore the connecting rod can be tightly pressed so as to control the opening degree and the air inlet amount of the air amount adjusting valve. The manual oppositely-opened multi-vane air amount adjusting valve has the beneficial effects of being high in sealing performance, convenient to maintain and simple in structure.

Description

technical field [0001] The invention relates to an air volume regulating valve, in particular to a manual split multi-leaf air volume regulating valve. Background technique [0002] At present, electric air volume control valves are widely used in industrial and civil building HVAC, fire-fighting and smoke exhaust systems to precisely adjust the air flow, and it is one of the important devices to control the ventilation mode in various environments. At present, the ventilation duct of the building ventilation system is provided with an air volume regulating valve. The air volume regulating valve includes a valve body and an adjusting device fixed on the valve body. It is fixed with the valve plate, and the adjusting device drives the valve plate to rotate by rotating the main shaft, so as to adjust the size of the air intake. When the cross-section of the ventilation pipe is vertical, the valve plate will open the ventilation pipe to the maximum, and the air intake volume w...

AI Technical Summary

Problems solved by technology

At present, the ventilation duct of the building ventilation system is provided with an air volume regulating valve. The air volume regulating valve includes a valve body and an adjusting device fixed on the valve body. It is fixed with the valve plate, and the adjusting device drives the valve plate to rotate by rotating the main shaft, so as to adjust the size of the air intake. When the cross-section of the ventilation pipe is vertical, the valve plate will open the ventilation pipe to the maximum, and the air intake volume will be the largest. Once the power failure or electrical control problems occur in the current electric split multi-leaf air volume control valve, the air volume adjustment cannot be realized. If the air volume adjustment device needs to be repaired It is also more troublesome, and there is a problem that the lower end of the blade shaft in the regulating valve is not firmly connected with the regulating valve frame, and it is easy to fall off. At present, the existing air volume regulating valve has generally poor sealing performance, inconvenient air intake adjustment, and its leakage. High efficiency, complex structure, high manufacturing cost, resulting in greatly increased cost

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