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An automatic shoe cover dispenser that includes a machine body, a traction and extension mechanism, a separation and hooking mechanism, a turning mechanism, a traction driving mechanism, and a shoe cover box. The body of the shoe cover box is equipped with a shoe cover separating exit. The separation and hooking mechanism extends into the shoe cover separating exit to pull out the shoe cover, and the traction and extension mechanism expands the shoe cover so that one merely has to insert a shoed foot into the stretched shoe cover with the tread of the shoe facing downwards. The advantages of the invention include its simple and rational structure, strong practicability, safety and reliability, and the use of a normal disposable shoe cover without special process and technical requirements, thus greatly reducing the costs of perishable items, and being affordable to a large quantity of consumers. In addition, the shoe cover dispenser has large capacity and allows for very convenient installation of shoe covers. The shoe cover installation quantity can be freely adjusted as desired and can reach a rate as high as dozens or even thousands of pairs of shoe covers before the shoe cover dispenser might need to be adjusted. The shoe cover dispenser can be widely used for household needs as well as various locations such as hospitals and scientific research institutes etc.

A multiple shockproof, hygroscopic and breathable shoe pad includes, from bottom to top in succession: a support bottom layer (1), wherein a lower end face of the support bottom layer (1) is provided with a plurality of protruding portions (5), an upper end face of the support bottom layer (1) is provided with air holes (6), and the protruding portions (5) and the air holes (6) are alternately arranged; an elastic interlayer (2), wherein the elastic interlayer (2) is provided with air holes (6), and is coated with an antibacterial deodorization layer; a hygroscopic interlayer (3), wherein the hygroscopic interlayer (3) is provided with air holes (6), and is coated with an antibacterial deodorization layer; and a breathable waterproof layer (4), coated with an antibacterial deodorization layer; and the support bottom layer (1), the elastic interlayer (2), the hygroscopic interlayer (3), and the breathable waterproof layer (4) are successively bonded.

The invention discloses a pipeline inner wall cleaning device which comprises a wheel carrier, a casing pipe and a variable frequency motor. Fixing sleeves are welded to the two ends of the wheel carrier, each fixing sleeve is evenly provided with three hinge seats, hinge columns are hinged to the hinge seats, elastic columns with springs are installed in the hinge columns, trundle seats at the tail ends of the elastic columns are provided with trundles, heading wheels driven by the variable frequency motor are arranged in the middle of the wheel carrier, a rotary seat, a rotary head and a lighting lamp are installed at the front end of the casing pipe, a brush is arranged on the rotary seat, dust suction holes are further formed in the rotary seat, a motor is installed in the rotary seat through a rotary sleeve, a filter net is installed at the tail end of the casing pipe, and a 12 V power source is further installed at the upper end in the casing pipe. By the adoption of the pipeline inner wall cleaning device, the structure is simple, novel and light, operation is convenient and flexible, the selection range is large, manufacturing cost is low, practicality is high, rust, dust and impurities in a pipeline can be well cleaned out and collected for centralized treatment, the cleaning effect is good, and use cost is low.