Beverage brewing device

A beverage brewing device, comprising:

• a kettle body,
• a heating disc, and
• a tea-leaf basket, wherein the heating disc and the tea-leaf basket are located in the kettle body, wherein an air cylinder mechanism is fixed in the kettle body, a moving piston is arranged in an inner cavity of the air cylinder mechanism, and the piston is connected to the tea-leaf basket, wherein the air cylinder mechanism is connected to an air pump, and the air pump is used for conveying a driving gas to the air cylinder mechanism, wherein the piston is driven by the driving gas, thereby driving the tea-leaf basket to move in the kettle body;
• wherein an output end of the air pump is connected to a pressure relief valve, and the output end of the pressure relief valve is connected to a first end of the air cylinder mechanism through a first air pipe, wherein a second end of the air cylinder mechanism is provided with an exhaust port, and the piston is connected to a return spring.

A beverage brewing device, comprising:

• a kettle body,
• a heating disc, and
• a tea-leaf basket, wherein the heating disc and the tea-leaf basket are located in the kettle body, wherein an air cylinder mechanism is fixed in the kettle body, a moving piston is arranged in an inner cavity of the air cylinder mechanism, and the piston is connected to the tea-leaf basket, wherein the air cylinder mechanism is connected to an air pump, and the air pump is used for conveying a driving gas to the air cylinder mechanism, wherein the piston is driven by the driving gas, thereby driving the tea-leaf basket to move in the kettle body;
• wherein an output end of the air pump is connected to a lower end of the air cylinder mechanism through a first air pipe, wherein the piston is telescopically moved via an upper end of the air cylinder mechanism, and a pressure relief valve is connected to the first air pipe in parallel.