A kneading tool of a type prearranged for being mounted rotatable about an axis of rotation of a kneading machine includes: a central shaft defining a main axis; and plurality of arms transverse to said shaft, which are positioned in different orientations about the main axis and/or in different positions along said axis so as to be staggered and not overlying with respect to one another.

A hollow shaft impeller (100) having a hollow impeller housing (120), a magnet (108), an impeller cap (102), an impeller retainer (106), and a plurality of impeller blades (134). The impeller housing has a hub (130) that defines an interior volume (128) and an impeller bore that provides access to the interior volume. The magnet may be sized to be disposed within the interior volume. The impeller cap may be removably coupled to the hollow impeller housing proximate to the impeller bore. The impeller retainer may be removably coupled to the magnet and sized to be disposed within the interior volume. The plurality of impeller blades may project from the hub. Optionally, fins (140) may be disposed on each of the plurality of impeller blades.

A hollow shaft impeller (100) having a hollow impeller housing (120), a magnet (108), an impeller cap (102), an impeller retainer (106), and a plurality of impeller blades (134). The impeller housing has a hub (130) that defines an interior volume (128) and an impeller bore that provides access to the interior volume. The magnet may be sized to be disposed within the interior volume. The impeller cap may be removably coupled to the hollow impeller housing proximate to the impeller bore. The impeller retainer may be removably coupled to the magnet and sized to be disposed within the interior volume. The plurality of impeller blades may project from the hub. Optionally, fins (140) may be disposed on each of the plurality of impeller blades.

A kitchen waste wastewater treatment equipment includes a reaction kettle, a discharging mechanism and a pressurizing mechanism. In the process of high-temperature and high-pressure thermal hydrolysis of wastewater in the present disclosure, the pressurizing disk in the pressurizing mechanism continuously moves downwards in a vacuum state in the reaction kettle, reducing the volume in the reaction kettle and thus increasing the pressure. The secondary pressurization of wastewater is achieved while using heating for high-temperature and high-pressure, and the high-temperature and high-pressure environment greatly improves the reaction rate of thermal hydrolysis. The thermal hydrolysis reaction also generates gas for further pressurization, which greatly improves the treatment efficiency of wastewater. Moreover, the pressurizing mechanism and the exhaust annular groove can separate the gas generated after thermal hydrolysis.

A kitchen waste wastewater treatment equipment includes a reaction kettle, a discharging mechanism and a pressurizing mechanism. In the process of high-temperature and high-pressure thermal hydrolysis of wastewater in the present disclosure, the pressurizing disk in the pressurizing mechanism continuously moves downwards in a vacuum state in the reaction kettle, reducing the volume in the reaction kettle and thus increasing the pressure. The secondary pressurization of wastewater is achieved while using heating for high-temperature and high-pressure, and the high-temperature and high-pressure environment greatly improves the reaction rate of thermal hydrolysis. The thermal hydrolysis reaction also generates gas for further pressurization, which greatly improves the treatment efficiency of wastewater. Moreover, the pressurizing mechanism and the exhaust annular groove can separate the gas generated after thermal hydrolysis.

Provided is an efficient and energy-saving building slurry stirring device. The device includes a grouting assembly, which includes a base, a storage tank, a discharge pipe, a grouting pump and a control box. The storage tank is arranged at the top of the base, the discharge pipe is located at one side of the storage tank, the grouting pump is arranged on the discharge pipe, and the control box is fixed to the top of the base. When the fluidity of a grouting material in the storage tank is reduced due to solidification, the stirring assembly can stir the grouting material in the storage tank. Then, the stirring assembly stops stirring the grouting material to save energy. After the grouting is completed, an inner wall of the storage tank can be cleaned by the stirring assembly.

Provided is an efficient and energy-saving building slurry stirring device. The device includes a grouting assembly, which includes a base, a storage tank, a discharge pipe, a grouting pump and a control box. The storage tank is arranged at the top of the base, the discharge pipe is located at one side of the storage tank, the grouting pump is arranged on the discharge pipe, and the control box is fixed to the top of the base. When the fluidity of a grouting material in the storage tank is reduced due to solidification, the stirring assembly can stir the grouting material in the storage tank. Then, the stirring assembly stops stirring the grouting material to save energy. After the grouting is completed, an inner wall of the storage tank can be cleaned by the stirring assembly.

Provided is a mixing apparatus. The mixing apparatus comprises a housing defining a primary chamber, an inlet for receiving material into the mixing apparatus, as well as an outlet for discharging material from the mixing apparatus. The housing provides within the primary chamber a plurality of rotating shafts, each rotating shaft having a plurality of flailing fixtures associated therewith.

An oven comprises a cooking cavity, a stirring member extending, in use, into foodstuff contained in a vessel disposed in the cooking cavity as well as drive means to provide, in use, relative movement between the stirring member and the vessel. The drive means comprises means to rotate, in use, the vessel with respect to the stirring member about a rotating axis. The oven comprises a swivel means comprising a motor to swivel, in use, the stirring member by means of the motor about a swivel axis extending at an angle of between 60-120 degrees, preferably substantially perpendicular to the rotating axis.

An oven comprises a cooking cavity, a stirring member extending, in use, into foodstuff contained in a vessel disposed in the cooking cavity as well as drive means to provide, in use, relative movement between the stirring member and the vessel. The drive means comprises means to rotate, in use, the vessel with respect to the stirring member about a rotating axis. The oven comprises a swivel means comprising a motor to swivel, in use, the stirring member by means of the motor about a swivel axis extending at an angle of between 60-120 degrees, preferably substantially perpendicular to the rotating axis.