777results about How to "Less prone to damage" patented technology

The invention provides an acid gas treatment system based on ammonia-process desulfurization. The acid gas treatment system comprises an acid gas burning unit, a burnt tail gas oxidation unit, a quenching unit, an ammonium sulfate preparation unit, a cooling dehydration unit and a tail gas demisting unit which are connected in sequence. The invention further provides an acid gas treatment method based on the ammonia-process desulfurization. The acid gas treatment system and the acid gas treatment method have the advantages that the desulfurization efficiency is high; the concentration of SO2 (Sulfur Dioxide) in emitted tail gas is lower than 200 mg / m<3>; the recovery rate of sulfur can reach 99.5 percent above; the desulfurization process is free from ammonia escape and excessive wastewater discharge; heat can be effectively released through reaction; the requirements for environmental protection are better met; the requirements for equipment materials of the treatment system are low; the treatment system is unlikely to damage in the using process, long in service life, low in investment, small in occupied area, low in operation cost, and safe and reliable to operate.

The invention discloses a concrete formwork support device which comprises concrete column formwork support devices, concrete beam formwork support devices, concrete wall formwork support devices, concrete formwork frame support devices and floor concrete formwork support devices.The concrete column formwork support devices are arranged on the peripheries of columns of a house, the concrete beam formwork support devices are arranged on the peripheries of beams of the house, the concrete wall formwork support devices are arranged on the peripheries of walls of the house, the concrete formwork frame support devices are arranged in internal spaces of the house, and the floor concrete formwork support devices are arranged below floors of the house.The concrete formwork support device has the advantages that cast-in-situ concrete formworks can be firmly supported by the concrete formwork support device; the concrete formwork support device can be conveniently, quickly and safely constructed, problems of formwork damage and formwork swelling can be solved, and the forming quality of concrete can be effectively improved.

A lifting mechanism comprises a first plate, a guide rail, sliding blocks, a driving part and a connecting part. The guide rail comprises at least two sliding grooves, wherein the sliding grooves areformed in a first surface of the first plate, are parallel to one another and extend in a first direction, the first direction is parallel to the first surface of the first plate, and the sliding grooves and the first plate are integrally formed. At least one sliding block is arranged in each sliding groove and is in sliding fit with the corresponding sliding groove. The connecting part is connected with the sliding blocks, the driving part and a printing platform so that the connecting part can be driven by the driving part to drive the sliding blocks and the printing platform to move in thefirst direction. Due to the fact that the sliding groove-type guide rail, the sliding grooves and a supporting plate are integrally arranged and the positions of sliding components of the sliding blocks can be adjusted so that the accuracy of sliding fit between the sliding blocks and the sliding grooves can be sufficiently ensured, sufficient compensation for sliding resistance, caused by skewingof a transmission component, between the sliding blocks and the sliding grooves is also ensured, and the sliding smoothness of the sliding blocks can also be ensured even if the transmission component skews to a large extent.