47results about How to "Enhanced axial elasticity" patented technology

The invention discloses a residual heat recycling and dust removal integrated coal-fired boiler with a conveniently detachable draught fan. A cyclone dust removal residual heat efficiency recycling device is formed by overlapping a tubular heat exchanger and a cyclone dust remover; a boiler exhaust pipe is connected with the cyclone dust remover in a tangential direction; after cyclone dust removal is carried out, ash is discharged from a cone bottom through an air closing device; exhaust is connected with a cone body through a rotational flow ascending pipe, is uniformly dispersed and then penetrates through tubes; after being concentrated through an upper conical hopper, the exhaust is discharged by the draught fan through an exhausting pipe; a high-level water tank is connected with the lower part of a shell side of the tubular heat exchanger; and an impeller of the draught fan can be used for cleaning the ash in real time through a centrifugal force. The residual heat recycling and dust removal integrated coal-fired boiler realizes integrated type residual heat recycling and dust removal; more importantly, a dismounting technology of the draught fan is greatly improved, and pressure on the end face of a screw shaft shoulder of a screw cap part can be simply eliminated in a dismounting process, so that the problem that thread assembling of the draught fan is continuously automatically locked under the action of a load and thus detachment is not easy is effectively solved; and therefore, the technical scheme is particularly suitable for conveniently detaching a large-size draught fan locked through a thread and the effect is particularly remarkable.

The invention discloses a tail heat recovery type steam plate dryer. An upper drying area of the dryer is tangentially connected with a cyclone dust removal tail heat efficient recovery device through an induced draft fan, and a tube type heat exchanger and a cyclone dust remover are overlaid to form the cyclone dust removal tail heat efficient recovery device. After cyclone dust removal, dust is discharged at the cone bottom through an air-lock valve. Tail gas is connected with a cone body through a cyclone ascending pipe, penetrates through a tube nest after being evenly dispersed, and is exhausted through an exhaust pipe after being concentrated by an upper cone hopper. Blades of an impeller of the induced draft fan are arranged in the radial shape that the blades are centrosymmetric in the radial direction of an impeller shaft, and the dust can be removed through centrifugal force in time. According to the tail heat recovery type steam plate dryer, the drying efficiency is improved, and energy conservation and emission reduction are realized; more importantly, the dismounting technology of the induced draft fan is changed substantially, so that when the induced draft fan is dismounted, pressure of components like nuts on the end faces of screw shaft shoulders can be eliminated simply, the problem that the induced draft fan is constantly automatically locked and is difficult to dismount under the action of loads during threaded assembling is solved effectively, and the technology is especially suitable for conveniently dismounting a large fan locked through threads.

The invention discloses a two-stage heat recovery type cyclone dust removal coal-fired boiler.A high-temperature tail gas tube of a boiler body is connected with an induced draft fan through an air preheating plate type heat exchanger, a water preheating shell-and-tube heat exchanger tube pass and a cyclone dust collector.A high-position soft water pond is preheated through a water preheating shell-and-tube heat exchanger shell pass and then supplies water to the boiler through a high-pressure pump system.A coupler and a fan shaft, and fan impellers and the fan shaft of the induced draft fan are assembled through threads, and the thread screwing direction is the same as the automatic locking direction of working and bearing.After the fan impellers compress a copper-lead torsion composite gasket, thread rigid connection is formed by the fan shaft.By means of clamping parts, the coupler and the other end of the fan shaft form rigid connection.By means of the two-stage heat recovery type cyclone dust removal coal-fired boiler, two-stage heat recovery and purification treatment of boiler tail gases are achieved, more importantly, the dismounting technology of the boiler induced draft fan is greatly improved, the problem that the boiler draft fan continuously and automatically locks under the load action and is not easy to dismount due to thread assembling can be effectively solved, and the two-stage heat recovery type cyclone dust removal coal-fired boiler is especially suitable for convenient dismounting after thread locking of large boiler draft fans.