37results about How to "High extrusion rigidity" 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 heat-pump reversed-current drying machine for tail heat utilization. According to the invention, an air draft hood of the drying machine is connected with an induced draft fan, and the induced draft fan is connected with an evaporator of a heat pump system via a cyclone dust remover, and then is emptied; the evaporator of the heat pump system is connected with a host via a refrigerant tube, and the host is connected with a condenser via the refrigerant tube; an exhaust end of an air blower is connected with an air intake hood via the condenser; and blades of an induced draft fan impeller are arranged to be in a radial shape with impeller-shaft radial and central symmetry, and ash can be timely cleaned by virtue of a centrifugal force, thus security incidents are avoided. According to the invention, drying efficiency is improved, and energy conservation and emission reduction are realized; and more importantly, a detachment technology for the induced draft fan is greatly improved, and a pressure of components such as a nut on the end surface of a shaft shoulder of a screw during detachment for the induced draft fan can be simply eliminated, thus the problem is effectively solved that the induced draft fan is not easy to detach due to continuously automatic locking in thread assembly for the induced draft fan under the action of a load. The heat-pump reversed-current drying machine for tail heat utilization is especially suitable for convenient detachment for a large fan after thread locking, and has a particularly remarkable effect.

The invention discloses a bag filter-type manganese processing rotary kiln system with a highly demountable induced draft fan. The bag filter-type manganese processing rotary kiln system adopts the structure that an air-lock valve used for feeding is arranged at the high end of a rotary kiln; the high end of the rotary kiln is connected with a cyclone dust extractor, an induced draft fan and a bag-type dust remover via a fin section and air pipes; fins are arranged in the fin section; a hood cylinder is arranged outside the fin section; a sleeve-type air heat exchanger is arranged outside an air pipe; the hood cylinder is communicated with a lower pumping hole in the air heat exchanger, and then divided into two paths for supplying preheated air; and the blades of the impeller of the induced draft fan are arranged in a radiation shaped and are in radial and central symmetry with respect to an impeller shaft, so that dust can be cleaned promptly via centrifugal force, and safety accidents can be avoided. The bag filter-type manganese processing rotary kiln system not only is high in heat efficiency, but also has the advantages that the demounting technology of the induced draft fan is greatly improved; pressure of a nut-like component on a shaft shoulder end surface of a screw can be eliminated simply during demounting, the problem that a threaded assembly of the induced draft fan is automatically screwed continuously under the action of a load to be difficult to demount can be solved effectively; the suitability for convenient demounting of a large-scale induced draft fan after thread screwing is high; and the effect is remarkable.