180results about How to "Suppression of scattering" patented technology

Provided is a fuel filling pipe device for a vehicle, configured so that fuel discharged from a fuel filling gun with shutter members closed can be prevented from spurting to the outside from the fuel filling opening. The fuel filling pipe device (10) for a vehicle comprises a filling pipe (14), a fuel filling opening (16) which is provided to the filling pipe (14) and into which a fuel filling gun (20a) is inserted, and a shutter mechanism (26) which is provided inside the fuel filling opening (16) and is provided with openable and closable shutter members (24a, 24b) opened when the fuel filling gun (20a) is pushed therein. The shutter mechanism (26) is provided with a spurt prevention section for preventing fuel, which is discharged from the fuel filling gun (20a) with the shutter members (24a, 24b) closed, from spurting to the outside from the fuel filling opening (16).

A particle of this solder powder is configured of a core and a coat layer applied on the core, and has an average particle diameter of 5 [mu]m or less. The solder powder is characterized in that: the core is composed of an intermetallic compound of silver and tin or is composed of silver and an intermetallic compound of silver and tin; the coat layer is composed of tin; and an intermediate layer composed of an intermetallic compound of copper and tin is provided between the core and the coat layer such that at least a part of the core is covered.

Provided is a method for producing a starting material for sintering, wherein it is possible to improve productivity compared to conventional methods by effectively using ultrafine limestone powder and high-carbon dust during the process in which the surface of pseudo particles is being covered with a limestone-based powder starting material and a solid-fuel-based powder starting material. When forming a limestone-based powder starting material inner layer by supplying a limestone-based powder starting material to the surface of pseudo particles obtained by granulating a material containing SiO2 and iron ore and when forming a solid-fuel-based powder starting material outer layer by supplying a solid-fuel-based powder starting material on the limestone-based powder starting material inner layer, a limestone-based powder starting material containing 5 to 40 mass% of ultrafine limestone particles is used as the limestone-based powder starting material and a solid-fuel-based powder starting material containing 5 to 40 mass% of high-carbon dust is used as the solid-fuel-based powder starting material.

The invention relates to concrete aggregate prepared by utilizing coal gangue and a preparation method thereof. The concrete aggregate is prepared from the following raw materials in parts by weight: 110-150 parts of broken coal gangue, 50-70 parts of foundry waste sand, 10-20 parts of copper sludge, 10-20 parts of red mud, 50-70 parts of regenerated diatomite broken pieces, 5-9 parts of additives, 6-10 parts of calcium hydroxide and 5-9 parts of sodium hydroxide solution with the mass concentration of 0.5mol/L, wherein the regenerated diatomite broken pieces are prepared from the following components in parts by weight: 40-60 parts of waste diatomite slurry, 20-30 parts of modified steel slag micro-powder, 6-11 parts of a surface modifier and 0.04-0.06 part of a foaming agent; and the modified steel slag micro-powder is prepared from steel slag and sodium metaborate which accounts for 1/10 to 1/2 of the weight of the steel slag. According to the invention, a large-scale application direction is found for the coal gangue, foundry waste sand, copper sludge, red mud, steel slag and waste diatomite, the waste materials are changed into things of value, and the environmental pollution and land occupation caused by solid wastes are reduced, so that the resources are further utilized, and energy conservation and environment friendliness are achieved.

The invention provides a motor actuator which can effectively prevent lubricating grease from being sprayed out. The motor (20) comprises a motor housing (23), which comprises a bearing accommodating part (25), wherein an oil-containing bearing is fixedly arranged in the bearing accommodating part (25); and a rotation shaft (21) which stretches out from the bearing accommodation part (25) to the motor housing (23). The motor housing (23) is elastically supported on a shell (10) by O-shaped rings (30,31). The bearing accommodating part (25) comprises a cylindrical part (25a), an accommodated oil-containing bearing, and a flange part which is opposite to the external end surface (28a) of the oil-containing bearing in the axial direction, and an opening part (25c) for inserting a rotation shaft is formed. The oil-containing bearing is provided with a second chamfering part (28e), which is coated by lubricating grease (29), in the inner circumferential side of the external end surface in the axial direction. The inner diameter (d1) of the opening part is arranged to be larger than the external diameter (d2) of the rotation shaft, and smaller than the external diameter (d3) of the second chamfering part.

Provided is an advantageous method for producing a starting material for sintering, wherein it is possible to improve productivity compared to conventional methods by effectively using ultrafine limestone powder and high-carbon dust during the process in which the surface of pseudo particles is being covered with a limestone-based powder starting material and a solid-fuel-based powder starting material. When the surface of pseudo particles is being covered with a limestone-based powder starting material and a solid-fuel-based powder starting material, a limestone-based powder starting material containing 5 to 40 mass% of ultrafine limestone particles is used as the limestone-based powder starting material and a solid-fuel-based powder starting material containing 5 to 40 mass% of high-carbon dust is used as the solid-fuel-based powder starting material.

The invention discloses an automatic cutting device for building boards, which comprises a base and cutting equipment. Guide rails are fixedly installed on the left and right sides of the base respectively. Slide blocks are respectively matched at the upper ends of the guide rails. Screw rods are arranged between the guide rails, and one end of the screw rod passes through The bearing seat of the screw rod is fixedly connected with the base, the other end of the screw rod is connected with the DC motor through a coupling, the DC motor is fixed on the base, the screw rod is matched with a screw nut, and the screw nut is fixedly connected with a slider drive The two ends of the drive plate and the slider drive plate are respectively fixedly connected with the slider on the guide rail. The top of the base is equipped with a cutting device. The cutting device includes a motor and a cutting blade. The cutting blade is fixedly installed on the rotor output shaft of the motor, and the motor is fixed. Installed on the motor mounting plate, the motor mounting plate is fixedly connected to the base through the motor lifting frame, and the motor mounting plate can move vertically on the motor lifting frame. The invention ensures that the incision of the building board is smooth, the cutting effect is good, and the cutting speed is improved at the same time.

Provided is a method for producing a starting material for sintering, wherein it is possible to improve productivity compared to conventional methods by effectively using high-carbon dust during the process in which the surface of pseudo particles is being covered with a solid-fuel-based powder starting material. When forming a limestone-based powder starting material base layer by supplying a limestone-based powder starting material to the surface of pseudo particles obtained by granulating a material containing SiO2 and iron ore and when forming a solid-fuel-based powder starting material outermost layer by supplying a solid-fuel-based powder starting material on the limestone-based powder starting material base layer, a solid-fuel-based powder starting material containing 5 to 40 mass% of high-carbon dust is used as the solid-fuel-based powder starting material.

Provided is a method for producing a starting material for sintering, wherein it is possible to improve productivity compared to conventional methods by effectively using high-carbon dust during the process in which the surfaces of preliminary particles are being covered with a solid-fuel-based powder starting material. When the surfaces of the preliminary particles are being covered with a solid-fuel-based powder starting material, a solid-fuel-based powder starting material containing 5 to 40 mass% of high-carbon dust is used as the solid-fuel-based powder starting material.

The invention provides a four-axis optical fiber laser welding device and belongs to the technical field of welding equipment. The four-axis optical fiber laser welding device comprises a machine table, a welding mechanism, a locating mechanism, a cooling mechanism, a power supply mechanism and a control mechanism. The locating mechanism comprises an X-axis device horizontally and fixedly connected with the top surface of the machine table, a Z-axis device perpendicularly connected with the top surface of the X-axis device, a Y-axis device perpendicularly connected with the side face of the Z-axis device and a C-axis rotary shaft connected with one end of the Y-axis device. The welding mechanism comprises a laser welding head arranged on the C-axis rotary shaft, a laser generator arrangedinside the machine table and a gas shielding device. A control system comprises an industrial personal computer arranged inside the machine table, a displayer, a keyboard and a mouse, wherein the displayer, the keyboard and the mouse are arranged beside the machine table and matched with the industrial personal computer for use. The four-axis optical fiber laser welding device can realize automatic welding, substantially reduces the manual workload and the requirement for the special technical skills, reduces human errors and the manpower requirement and improves the production efficiency andproduct quality.