36results about How to "Guaranteed second use" patented technology

The invention discloses a roller type vibration double sieve. The roller type vibration double sieve comprises a primary screening mechanism and a secondary screening mechanism in sequence along a material conveying direction, wherein the primary screening mechanism comprises a primary floating carrier roller seat, a primary spring seat and a primary vibration roller sieve; the secondary screening mechanism comprises a secondary floating carrier roller seat, a secondary spring seat and a secondary vibration roller sieve; a discharging hole end of the primary vibration roller sieve stretches into the secondary vibration roller sieve; vibration supporting rolling wheels are arranged in the peripheral direction of the outer wall of the discharging hole end of the primary vibration roller sieve at interval; a feeding hole end of the secondary vibration roller sieve is overlapped on the vibration supporting rolling wheels. The roller type vibration double sieve is convenient to detach and mount and has good screening effect; the screening rate is greatly improved, the automation degree of the working is high, the labor intensity of workers is small and the production efficiency is high; the roller type vibration double sieve is suitable for back-grade sorting of an urban and rural household garbage treatment system, can be used for selecting plastic, textiles and screening sand stones, glass, metal and the like, and provides guarantees to the secondary utilization of materials.

The invention discloses a lawnmower, which comprises a main body of the lawnmower and a mowing mechanism arranged at the bottom of the main body of the lawnmower. The blade; the cutting blade includes a first cutting blade and a second cutting blade arranged between the first cutting blade and the driving motor. The mowing mechanism is provided with double-layer cutting blades. When the driving motor drives the cutting blades to run, the first cutting blade and the second cutting blade can rotate in the same direction or in the opposite direction, thereby crushing the weeds sucked into the mowing mechanism. Compared with the single-layer cutting blade of the traditional lawn mower, the above-mentioned double-layer cutting blade has a good effect of cutting grass. Thereby, the secondary utilization of broken grass can be fully guaranteed.

The invention discloses a nail collection device for construction sites, which comprises a base, a pulley, an opening, a fixed vertical bar, an upper fixed block, a lower fixed block, a first motor, a lead screw, a movable block, a first electromagnet, The first spring, the metal block, the movable vertical rod, the casing, the rotating shaft, the large gear, the first permanent magnet, the second motor, the motor connecting rod and the pinion, etc.; the present invention has the advantages of reasonable and simple structure, low production cost and convenient installation. , can effectively collect the iron nails on the construction site, and separate the impurities in the iron nails, thereby solving the deficiencies in the background technology; Flattening, so as to prevent the ground from being uneven after the iron nails are collected; the present invention can effectively filter the impurities contained in the iron nails after the iron nails are collected, remove the impurities inside, and ensure that the iron nails can be directly used twice .