Controllable direct liquid tool pen

A controllable direct liquid tool pen, comprising:

• a pen body,
• a fixed ring clamped on the pen body,
• two first through slots arranged on two sides of the fixed ring,
• two elastic blocks, one of which is fixedly connected to one of the two first through slots, and
• two second through slots arranged on the pen body into which the two elastic blocks may be inserted, wherein
• the pen body is arranged with a squeezing mechanism for automatically discharging liquid, the squeezing mechanism comprises a fixed block fixedly connected to an inner wall of the pen body, a threaded rod slidably connected to the fixed block, a rotating post threadedly connected to the threaded rod, a limit ring fixedly connected to the rotating post, and a limit cover slidably connected to the rotating post;
• and the limit cover is threadedly connected to the pen body, the threaded rod is arranged with a sealing assembly for pushing liquid, and the pen body is arranged with a blocking assembly for preventing liquid leakage;
• the sealing assembly comprises a push block fixedly connected to the threaded rod at one end away from the limit cover, and a sealing ring fixedly connected to the threaded rod, an outer wall of the push block and an outer wall of the sealing ring are in contact with the inner wall of the pen body, and the push block and the sealing ring are both elastically deformable;
• and
• the blocking assembly comprises a first liquid outlet head threadedly connected to the pen body, a limit post detachably connected in the first liquid outlet head, and a blocking cover clamped on the limit post, a through hole is arranged on the blocking cover, and a support frame is fixedly connected to the limit post at one end away from the pen body;
• and one end of a spring is fixedly connected to the support frame, and the other end of the spring is fixedly connected to a blocking ball for blocking the through hole.