Concrete pouring guiding device and construction method for sewage treatment tank

A concrete pouring guiding device, comprising a guiding element and a mounting seat configured to be fixed on an external mounting position, wherein the guiding element is threadedly engaged with the mounting seat, so as to enable the guiding element to move in a first direction with respect to the mounting seat;

• in the first direction, one end of the guiding element is configured to allow concrete to flow into the guiding element, and the other end of the guiding element is configured to extend to a target position;
• and the first direction is a length direction of the guiding element;
• wherein the mounting seat is provided with two clamping grooves, wherein the two clamping grooves are symmetrically provided on two sides of the guiding element in a second direction, and the clamping grooves are configured to be snap-fitted with the external mounting position;
• wherein a clamping block is provided in each of the clamping grooves, the concrete pouring guiding device further comprises a locking bolt, a threaded hole cooperating with the locking bolt is provided in the mounting seat, the locking bolt extends through the threaded hole into a corresponding clamping groove, and the locking bolt is movably connected to the clamping block, so that the clamping block is movable in the second direction driven by the locking bolt;
• wherein the guiding element comprises a receiving cylinder and a guiding cylinder sleeved together, so that the receiving cylinder and the guiding cylinder are movable relative to each other in the first direction;
• and an external thread cooperating with the mounting seat is provided on an outer wall of the guiding cylinder;
• and
• a rotation handle for rotating the guiding cylinder is fixed on the guiding cylinder, and a fixed handle is fixed on the receiving cylinder.