Scraper

A scraper, comprising:

• a shell, defining a mounting cavity with an inlet/outlet and comprising a locking portion, wherein the mounting cavity is formed between a first inner wall and a second inner wall of the shell and extends along a length direction of the shell, and the locking portion is formed at the first inner wall of the shell;
• and
• a connecting member, slidably mounted in the mounting cavity and comprising:
• a connection body;
• a mounting portion, arranged at one end of the connection body and configured to mount a working blade, wherein the working blade is configured to partially extend out of the mounting cavity or be received in the mounting cavity through the inlet/outlet;
• a support leg, obliquely arranged on the connection body and away from the mounting portion;
• wherein the support leg comprises a connecting end and a contact end, the connecting end is connected to the connection body, the contact end abuts against the second inner wall of the shell to form an elastic support to the connecting body, and the contact end is closer to the working blade than the connecting end;
• and
• a cooperating portion, arranged close to the connecting end, wherein when the working blade extends out of the mounting cavity to a working position, the locking portion is engaged with the cooperating portion to restrict a relative position between the connecting member and the shell.