A device for stirring mud and collecting gas in drilling

The invention relates to a device for stirring mud and collecting gas in drilling. The structure is characterized in that a steel cylinder is positioned on a machine frame, an organic glass cover is arranged on the top of the steel cylinder, and a sealing ring is fastened by screws and positioned between the steel cylinder and the organic glass cover, a gas collecting nozzle and a vacuumizing nozzle are communicated with the steel cylinder through the organic glass cover, the gas collecting nozzle is connected with a negative pressure indraft device and the vacuumizing nozzle is connected with a vacuum pump, a mud inlet is communicated with the steel cylinder, and the steel cylinder has an upper mud outlet and a lower mud outlet. A stirring motor is arranged above the organic glass cover, the stirring motor is connected with a stirring shaft that is harnessed with a sealed bearing and passes through the organic glass cover, the stirring shaft is coated with a stirring shaft sleeve, and the lower end of the stirring shaft is connected with a stirring impeller. The device is of simple structure and convenient operation, is economical and practical, and is capable of meeting the needs of exploration and search for natural gas hydrate in frozen earth areas.