Pump for spraying liquid

A pump for spraying liquid, the pump comprising:

• a housing comprising an interior space configured to receive a content;
• a guide configured to move up and down within the interior space and comprising an inlet hole capable of connecting with the interior space;
• a piston configured to move according to an upward and a downward movement of the guide while maintaining contact with an inner perimeter of the housing and an outer perimeter of the guide and capable of closing the inlet hole;
• a valve coupled to and connecting with an upper portion of the guide, the valve protruding to an exterior of the housing;
• a shoulder coupled to an upper portion of the housing;
• and
• an elastic member having one end thereof contacting the shoulder and the other end thereof contacting the valve to provide an elastic force for pushing the valve upward,
• wherein the elastic member comprises a center portion and deformation portions, the deformation portions formed on both ends of the center portion and capable of elastic deformation, the center portion and the deformation portions formed as an integrated body.