6 results about "Oil film" patented technology

A rolling bearing for a turbomachine supporting a first shaft to rotate relative to a second shaft, and comprising: a plurality of rolling elements engaged between an inner annular ring mounted on the second shaft and an outer annular ring mounted on the first shaft; an oil film formed at an annular contact surface between said outer ring and said first shaft; at least one duct passing through said inner ring and opening out in an inner race for said rolling elements in order to lubricate them; and at least one additional duct passing through said inner ring and opening out outside the inner race in order to feed oil through said outer ring to said oil film under the effect of the centrifugal force generated by said second shaft rotating, said outer ring having an annular shoulder projecting radially towards the inside of said annular space, said shoulder having at least one channel opening out substantially in register with said additional duct and opening out into said oil film.

The invention belongs to the field of doors and windows of fixed buildings, and particularly discloses a wooden sound insulation door which comprises a door frame, a door body and a handle, a contact surface between the door frame and the door body is a mutually matched inclined plane, a first groove is formed in the door frame, an air bag and a cylinder are mounted in the first groove, the cylinder comprises a cylinder body, a piston, a piston rod, a bump, a reset spring and a connecting pipe, a working end of the bump is provided with an inclined plane as same as the door frame, a second groove matched with the air bag is formed in the door body, an oil film layer is mounted in the second groove, a through hole is formed in the axle center of the oil film layer and can contain the air bag, and the outer surfaces of the door body, the door frame and the bump are coated with sound absorption coatings. The wooden sound insulation door is good in sound insulation effect, and noise is obviously reduced.

The invention relates to a central grading lean oil premixed low-pollution combustion chamber. A duty stage is located in the center and consists of a film-forming air atomizing nozzle and a two-stagecyclone, the two-stage cyclone forms a reasonable central backflow area at the downstream, in addition, an oil film improves the atomizing effect under the shearing action of the two-stage cyclone, the flame stability characteristic under a small working condition is effectively improved, and the working boundary of the duty stage is widened. A main combustion stage is composed of a plurality ofdirect injection nozzles with annular air and a main combustion stage cyclone, the annular air effectively controls jet flows to have a reasonable penetration depth within a full working condition range, swirling air and the multiple jet flows are premixed in a main combustion stage straight channel and a convergent channel in advance, the formed uniform combustible mixed gas is premixed and combusted in the combustion chamber, the pollution emission of the combustion chamber under a large working condition can be remarkably reduced, and the problem of spontaneous combustion can be effectivelyavoided. Therefore, the problems of flame stability under the small working condition and pollution emission under the large working condition can be effectively solved.

The invention relates to a thrust bearing, which is characterized by comprising 6 to 24 thrust bearing pad groups; each thrust bearing pad group comprises thrust bearing pads and a supporting pad; the independent thrust bearing pad groups are evenly distributed on a same ring-shaped plane; a supporting block is arranged between the thrust bearing pads and the supporting pad; the lower-part end surface of the supporting pad is a spherical cambered surface; and the radial central line of each supporting block lags behind the geometric central line of the corresponding thrust bearing pads. The thrust bearing has the advantages that as a plurality of groups of thrust bearing pads and the supporting block of the spherical cambered surface are adopted, the stress surfaces of the thrust bearings are even; stop pins effectively control the radial swinging width of the thrust bearing pads; as the radial central line of the supporting block lags behind the geometric central line of the thrust bearing pads, and due to wedge-shaped lubricating oil inlets, oil films are easily formed on the surface of the thrust bearing pads so as to reduce the temperature of touching surfaces; both the supporting block and the stop pins can prevent the thrust bearing pads and the supporting pad from being deviated; among a plurality of independent thrust bearing pads, individual thrust bearing pad can be replaced separately, and therefore the maintenance cost is reduced.

The invention relates to the technical field of mechanical equipment, in particular to oil film coating equipment for bolt production. According to the equipment, physical strength and time during manual oil film coating can be effectively saved through automatic oil injection treatment on a bolt, the bolt can automatically rotate, the operation mode is simplified, and the working efficiency is improved; and meanwhile, the uniformity of an oil film on the bolt is improved, the quality of oil film coating is effectively improved, the recovery rate of redundant oil in an oil injection bin is increased, oil waste is effectively reduced, and practicability and reliability are improved. The equipment comprises the oil injection bin, four sets of supporting legs, a guide groove plate, a guide plate and a baffle, wherein the four sets of supporting legs are uniformly mounted at the lower side of the oil injection bin, the right side of the top of the oil injection bin is provided with a feeding port in a communicating mode, and the guide groove plate is mounted at the lower left side of the oil injection bin and communicates with the interior of the oil injection bin.