摘要:
A motor-assisted bicycle powered by both a motor and man power with a transmission reduction mechanism for transmitting the rotation of a motor as well as for reducing speed. The motor-assisted bicycle also has a driving wheel capable of being driven by a driving force delivered from the transmission reduction mechanism and a clutch for transmitting a one-way driving force. The clutch is provided within the transmission reduction mechanism, thereby making the entire driving portion of the motor-assisted bicycle more compact.
摘要:
A motor and pedal driven bicycle having a motor driving unit for providing driver power to a wheel in which the motor driving unit includes a disc-like casing having a space formed therein and dividable into two portions, a battery powered wheel driving motor, and a speed reducer coupled to the motor to reduce a revolution speed of the motor. The casing is composed of a fixed portion secured to a hub spindle of the wheel and a rotatable portion provided on a hub shell mounted on the hub spindle to be rotatable along with the hub shell. Either the motor or both the motor and the speed reducer are provided on the inside of the fixed portion of the casing.
摘要:
This invention aims to attain an industrial furnace which ensures uninterrupted operation of itself and protects accessorial devices thereof including a rotary regenerative burner against otherwise possible damage when the rotary regenerative burner suffers from a mechanical trouble, and possess high responsivity and high accuracy. This industrial furnace has an oxidizing agent passage (12) communicating with-an oxidizing agent duct (33a) of a rotary regenerative burner (30), an exhaust gas passage (13) communicating with an exhaust gas duct (33b), a bypass (15) allowing intercommunication between the oxidizing agent passage (12) and the exhaust gas passage (13), and cut-off valves (16, 17) provided respectively in the bypass (15) and the exhaust gas passage (13), whereby the cut-off valve (16) on the bypass (15) side and the cut-off valve (17) on the exhaust gas passage (13) is controlled in response to a signal from burner.
摘要:
This invention is directed to a heat recovery type combustion apparatus which has a regeverative member of ceramic material attached to the lateral wall of the main body of the combustion apparatus, a rotary duct set in place and adapted to communicate with the regeverative member, an air conduit for allowing flow of combustion air and an exhaust gas conduit for allowing flow of exhaust gas arising from combustion of fuel in the combustion apparatus both formed in the interior of the rotary duct, and rotary means adapted to rotate the rotary duct and enable the combustion air to be heated with the exhaust gas through the medium of the regeverative member.
摘要:
A system for recovering resources from sludge in which sludge containing water in the amount of 90 to 70 percent is first supplied to a sludge concentrator through a forced supply equipment where the sludge is concentrated to contain a water content of a maximum of about 60 percent; then is sent to a drying furnace having a fluidized sand bed. The product obtained in the drying furnace is separated to gas and solid. After the separated gas is pressurized by a fan and is heated by a heat exchanger through a circulator passage, a portion thereof is supplied to the drying furnace as gas for drying and the remainder is sent to the sludge concentrator. The water content is then removed from the concentrated gas and the gas obtained from the sludge concentrator is used in the system as gaseous fuel. Further, the separated solid is dried and distilled through a special gasifying apparatus to recover gaseous fuel, and in addition, the separated solid is fed into ash disposal equipment; the ash generated from the gasifying apparatus is also supplied to the ash disposal equipment to allow the ash to be melted and then to allow the ash to be solidified in the ash disposal equipment and to take out the solidified massive ashes; the exhaust gases from the gasifying apparatus and ash disposal equipment are supplied to the said heat exchanger.
摘要:
A surface layer formed of a composite material is stacked on the surface of a core layer formed of a foam synthetic resin material, and an arrester portion is provided in an interface region between the surface layer and the core layer to prevent the progression of delamination between the surface layer and the core layer. Optical fibers with grating portions are embedded inside the arrester and along the surface layer, and the spectra of reflected light from the optical fibers are compared to detect the occurrence position of a crack between the surface layer and the core layer.
摘要:
A surface layer (4) formed of a composite material is stacked on the surface (3) of a core layer (2) formed of a foam synthetic resin material, and an arrester portion (5) is provided in an interface region between the surface layer (4) and the core layer (2) to prevent the progression of delamination between the surface layer (4) and the core layer (2). Optical fibers (6a, 6b) with grating portions are embedded inside the arrester (5) and along the surface layer (4), and the spectra (A, B) of reflected light from the optical fibers (6a, 6b) are compared to detect the occurrence position of a crack between the surface layer (4) and the core layer (2).
摘要:
A partition (51, 52, 53) is provided within a vessel (1) for dividing the vessel into two along the vertical direction of the vessel except upper and lower portions thereof. The vessel (1) contains polishing particles (4). A cleaning liquid sprayer (8) is provided in the upper portion of the vessel (1). A discharge opening (2, 3) is provided in a lower portion of the vessel (1) for discharging the cleaning liquid passing through the perforated plate (2). Vibrators (71, 72) are mounted on the brackets (61, 62) to the wall of the vessel (1) for vibrating the vessel so as to generate convection currents of the polishing particles (4) in such a manner that polishing particles flow downward on one side of the partition (51, 52, 53) and upward on the other side thereof.
摘要:
In order to reduce releasing of neutral salts comprising monovalent ions contained in industrial waste effluent to the environment, the waste effluent to be treated is supplied into a prepositive electrodialysis cell comprising ion exchange membranes which transfer monovalent ions selectively for concentrating the salts, concentrated stream is supplied into an electrolytic dialysis cell for separating and recovering acids and bases, subsequently diluted stream is circulated as supplying stream to the prepositive electrodialysis cell, the diluted stream in said prepositive electrodialysis cell is subsequently supplied to and desalted by one or plural electrodialysis cells combined in series, the diluted stream after the desalination is released to the environment, and the concentrated stream is merged to the supplying stream to the prepositive electrodialysis cell. In accordance with the present invention, concentration of impurity in recovered acid decreases to less than 1/10, and necessary electric power for dialysis treatment and recovery of the acid and the base decreases to less than 1/2.
摘要:
A nuclear fuel element comprises plutonium-containing fuel pellets filled in a cladding with both end sealed with end plugs. One end plug has a filter at the inside and a passage communicating with the space in the cladding through the filter. The passage is sealed at the surface part of the end plug by welding. The filter and the passage in the end plug are utilized for withdrawing a gas in the cladding filled with the fuel pellets in a process for fabricating the nuclear fuel element. The filter traps nuclear fissionable materials in the cladding to prevent its leakage to the outside. After the withdrawal of the gas, a helium gas is filled in the cladding through the passage in the end plug. After completion of these operations, the passage in the end plug is sealed as mentioned above.