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A paddle shaft assembly for a mixing apparatus including a quickly and easily removable quill shaft provided with a unique seal structure associated with the shaft and a unique mounting and handle structure to enable disassembly of the shaft in relation to a mixer drum and paddle assembly in the dru

A paddle shaft assembly for a mixing apparatus including a quickly and easily removable quill shaft provided with a unique seal structure associated with the shaft and a unique mounting and handle structure to enable disassembly of the shaft in relation to a mixer drum and paddle assembly in the drum. The removable shaft is provided with a flanged end plate having keyhole slot connections to a flange on the end of a rotatable sleeve sealed in relation to the drum for removably supporting the shaft and a loop type handle attached to the end plate to facilitate manipulation of the end plate and shaft to remove and replace the shaft. A seal assembly is associated with the shaft, rotatable sleeve, end plate and flange to seal those areas of the shaft and sleeve to preclude passage of the material being mixed into the area between the shaft and rotatable sleeve, and between the flange and end plate.

대표청구항 ▼

In a mixing apparatus having a supported drum for receiving materials to be mixed and a driven paddle shaft assembly within the drum driven by power means in which the paddle shaft assembly includes a quill shaft positioned in the drum with one end extending externally thereof and the other end incl

In a mixing apparatus having a supported drum for receiving materials to be mixed and a driven paddle shaft assembly within the drum driven by power means in which the paddle shaft assembly includes a quill shaft positioned in the drum with one end extending externally thereof and the other end including means releasably connected with the power means with the paddle shaft assembly including a hollow shaft with paddles thereon receiving the quill shaft and being driven by the quill shaft and means oriented externally of the drum to maintain the quill shaft in connecting relation to the power means with the retaining means being releasable to allow the quill shaft to be withdrawn from the interior of the drum, the improvement comprising seal means operatively associated between the quill shaft and drum to prevent leakage of material being mixed between the drum and quill shaft, said seal means comprising a sleeve extending longitudinally of the quill shaft where it exists from the drum with the sleeve including a cylindrical external surface engaged by a seal, said sleeve and quill shaft having interfacing surfaces interiorally of the sleeve and a seal assembly in the interface to prevent leakage of material being mixed along the interface.