Negative pressure water tank based automatic drainage device for mining and drainage method thereof

Abstract

The invention relates to a negative pressure water tank based automatic drainage device for mining and a drainage method thereof. The drainage device comprises a negative pressure water tank and a water pump; the negative pressure water tank is communicated with the water pump through water outlet pipelines; the upper part of the negative pressure water tank is provided with an air inlet and a water injection hole, and the water injection hole is connected with an electric water injection valve; a ball float type liquid level sensor is arranged in the negative pressure water tank. When the water level of a water sump reaches the maximum limit, according to the feedback information of the ball float type liquid level sensor, a controller is allowed to close the electric water injection valve and an air inlet valve and start the water pump. As the water level drops, negative pressure forms in the upper part of the negative pressure water tank, therefore, the water in the water sump is sucked into the negative pressure water tank and discharged through the water pump. After the drainage process, the air inlet valve is opened first, and then the water pump is gradually shut off. By using the ball float type liquid level sensor, the liquid level in the negative pressure water tank is more accurately controlled, the time to open or close each valve and to start or shut off the water pump are determined respectively, pressure fluctuation of the pipelines in the entire device is reduced, the impact on the water pump is thus reduced, and safe and stable operation of the entire device is ensured.

Description

technical field [0001] The invention relates to the technical field of negative pressure drainage, and more specifically relates to a mine automatic drainage device based on a negative pressure water tank and a drainage method thereof. Background technique [0002] Water pumps are general-purpose equipment widely used in various industries. Ordinary water pumps are generally required to adopt a self-priming arrangement. When the conditions of the pump room do not allow the self-irrigating arrangement, the centrifugal pump pumps water from a low water level, and a bottom valve must be installed on the suction pipe to fill the pump with water during the initial pumping. Air in the pump. The water in the water tank of mining enterprises contains impurities. In actual production, it often occurs that impurities enter the bottom valve and the bottom valve is not tightly sealed, resulting in water leakage from the bottom valve and making the equipment unable to operate normally. ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a mine automatic drainage device and drainage method based on a negative pressure water tank, to solve the inapplicability of the bottom valve in the drainage process of mining enterprises and the pipeline pressure in the negative pressure drainage process proposed in the above background technology The problem that large fluctuations cause a large impact on the water pump

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