TH6146A - Propeller concrete mixer - Google Patents

Abstract

The concrete mixer consists of a main frame. A large bearing ring is supported by this main frame. This ring supports the outside of the rotating barrel bearing. The inner wall of the rotating barrel, made of flexible material, is supported for rotation by this barrel bearing. The barrel bearing has a number of widely spaced fingers extending from the ring, and flexible straps extending from each finger to the outer surface of the barrel. Therefore, the support of the barrel on the wall allows it to be deflected from the outside to eject the concrete, which may adhere to the inner surface. The flexible rotor is supported for rotation on the inside of the rotating barrel.

Claims (12)

1. The impeller-type concrete mixer has a main frame and a rotor support frame made of flexible material, supported by the main frame. The mixing blades are on the rotor. The driving part is on the main frame and connected to drive the rotor. The bearing ring is supported by the main frame. The barrel loading part, supported by the main frame, rotates around the axis of the bearing ring. The barrel loading part consists of several supports extending away from the ring. The flexible barrel is surrounded by the rotor but is loaded inside. The barrel clamping part consists of several flexible straps extending between these supports and the outer surface of the barrel. These straps, respectively, are spaced sufficiently close to provide access to the outer surface of the barrel for the deflection of the barrel wall to shed the concrete once it adheres to the inner surface of the wall. 2. The impeller-type concrete mixer relating to claim 1 herein, the barrel bearing assembly consists of an annular section attached to the bearing ring and such support consists of fingers spaced at intervals by a number of serrations extending from the annular area parallel to the axis of rotation. 3. The impeller-type concrete mixer relating to claim number 1 herein, its main frame consists of vertical mounting plates, which support the aforementioned bearing rings. 4. The impeller-type concrete mixer related to claim No. 1 herein consists of a pair of parallel, spaced-apart hydraulic cylinder/piston assemblies supported by a main frame. A mounting plate extends between the movable parts of the said hydraulic assembly. Removable parts comprising the motor and gearbox are supported by the rotor mounting plate. The rotor load extends from the gearbox drive shaft, and a fixed part attaches the rotor end to the rotor load. 5. The impeller-type concrete mixer related to Approval 4 also includes a solenoid valve attached to a hydraulic cylinder/piston assembly which, when actuated, (a) causes the piston of the hydraulic assembly to move the rotor a sufficient distance into or out of the barrel to remove concrete from the inner surface of the barrel, or (b) causes the retraction or restoration of the rotor from or into the barrel. 6. The impeller-type concrete mixer related to Patent 1 also includes a device that changes the pressure within the rotor cavity in sufficient quantity to straighten the rotor's flexible material. 7. The impeller-type concrete mixer related to claim 1, whereby the rotor mixing blades remove the inner surface of the barrel. 8. The propeller-type concrete mixer associated with Treaty 1 consists of an input conveyor belt to feed the concrete mix into the barrel and a discharge conveyor belt to discharge the concrete after it has been mixed in the barrel. 9. The propeller-type concrete mixer, as per claim 8, herein has a discharge conveyor belt consisting of an axis centered around the ends, which is inclined between the operating and cleaning positions. 10. The impeller-type concrete mixer associated with Patent 1 herein, at the feed end of the barrel, consists of a reservoir cavity, a rotor performing premixation within that reservoir cavity, and a motor coupled to the rotor to produce a premix of the concrete mixture when it is first fed into the barrel. 11. The propeller-type concrete mixer associated with Treaty 1 consists of a barrel, a rotating conical feeder at the inlet end of the barrel drum for feeding the concrete mix into the barrel drum and for pre-mixing as before it was fed into the barrel drum. 12. The propeller-type concrete mixer related to claim 11 herein, the feeder barrel is provided with a premixing rotor that can be supported internally and rotated (Clause 12, page 3, figure 5).