Abstract: A cleaning system may include a vacuum cleaner and a docking station. The vacuum cleaner may include an air inlet, a suction motor having a suction motor inlet and a suction motor outlet, and a cleaner dust cup configured to transition between a collection position and an emptying position, the cleaner dust cup being upstream of the suction motor inlet when in the collection position and downstream of the suction motor outlet when in the emptying position. The docking station may include a base, a support extending from the base, a station dust cup removably coupled to the support, and a receptacle coupled to the support and configured to receive at least a portion of the vacuum cleaner, the cleaner dust cup being fluidly coupled to and upstream of the station dust cup when the vacuum cleaner is inserted in the receptacle.

Abstract: A spiral conveyor includes a mesh chain spirally wound around and rotate synchronously with an outer circumference of each rotary drums. The inner side of each chain link of the mesh chain close to the rotary drum is provided with a drive head extending towards a drum body of the rotary drum. The drive head is provided with a convex-arc edge and includes an arc slot provided on each of two sides or on a single side of the drive head. Driving poles are evenly distributed around the outer circumference of the rotary drum and engage with the drive heads of each layer. When the inner side of the mesh chain adapts to the perimeter of the outer side of the mesh chain, the drive head on the inner side of the mesh chain engages with the driving pole.

Abstract: A freezing spiral net chain structure includes a plurality of chain links successively arranged in a travelling direction of a rail. Transmission teeth are arranged at inner ends of the chain links. Engagement teeth are arranged at two sides of the chain links. The engagement teeth of the adjacent chain links are engaged with each other. Axial holes are disposed between the mutually engaged engagement teeth. Rotary shafts are inserted into the axial holes. A metal piece is connected between outer ends of every two adjacent rotary shafts. The metal piece may bear a load from an outer-end spiral net, and since a coefficient of expansion of metal is smaller than that of plastic, deformation between the adjacent rotary shafts as a result of cold shrinking is reduced. The metal piece is different from the rotary shafts of the plastic spiral conveying net chain in terms of pitch.

Abstract: A freezing spiral net chain structure includes a plurality of chain links successively arranged in a travelling direction of a rail. Transmission teeth are arranged at inner ends of the chain links. Engagement teeth are arranged at two sides of the chain links. The engagement teeth of the adjacent chain links are engaged with each other. Axial holes are disposed between the mutually engaged engagement teeth. Rotary shafts are inserted into the axial holes. A metal piece is connected between outer ends of every two adjacent rotary shafts. The metal piece may bear a load from an outer-end spiral net, and since a coefficient of expansion of metal is smaller than that of plastic, deformation between the adjacent rotary shafts as a result of cold shrinking is reduced. The metal piece is different from the rotary shafts of the plastic spiral conveying net chain in terms of pitch.

Abstract: A spiral conveying mesh chain which pertains to the field of conveying equipment includes a conveying mesh chain main body. The edge of the inner side of the conveying mesh chain main body is uniformly provided with passive teeth. The passive teeth are used to engage with driving teeth on the outer periphery of a rotating drum for driving the conveying mesh chain main body to rotate. The contact surface of the passive tooth and the driving tooth is one item selected from a group consisting of an inclined surface, an arc-shaped surface, a V-shaped contact surface, and a T-shaped contact surface, so that the force direction between the passive tooth and the driving tooth is inwardly deviated relative to the rotation direction of the conveying mesh chain.

Abstract: A spiral conveying mesh chain which pertains to the field of conveying equipment includes a conveying mesh chain main body. The edge of the inner side of the conveying mesh chain main body is uniformly provided with passive teeth. The passive teeth are used to engage with driving teeth on the outer periphery of a rotating drum for driving the conveying mesh chain main body to rotate. The contact surface of the passive tooth and the driving tooth is one item selected from a group consisting of an inclined surface, an arc-shaped surface, a V-shaped contact surface, and a T-shaped contact surface, so that the force direction between the passive tooth and the driving tooth is inwardly deviated relative to the rotation direction of the conveying mesh chain.