138results about How to "Improve lubrication" patented technology

The invention relates to a drying cylinder surface repairing agent. The drying cylinder surface repairing agent comprises, by mass, from 2% to 5% of metallic compound solid lubricants, from 5% to 15% of cationic polymers and from 80% to 90% of water. The drying cylinder surface repairing agent contains the metallic compound solid lubricants, the metallic compound solid lubricants have the property that the metallic compound solid lubricants in heat automatically approach metal surfaces, accordingly, in a paper drying process after the drying cylinder surface repairing agent forms a coating on the surface of a drying cylinder, the metallic compound solid lubricants in heat can be effectively attached to the surface of the drying cylinder, and defects on the surface of the drying cylinder can be effectively filled and repaired. The invention further relates to a drying cylinder surface repairing method and a repaired drying cylinder.

The invention provides a reinforcing ring for a reversing device and belongs to the technical field of reversing devices. The reinforcing ring solves the technical problems that an existing reversing device is low in strength and poor in abrasion resistance. According to the technical scheme, the reinforcing ring for the reversing device comprises an annular body which is prepared from, by weight, 55-75 parts of epoxy resin, 5-15 parts of non-alkali glass fibers, 5-10 parts of aramid fibers, 15-30 parts of a curing agent, 3-8 parts of a toughening agent, 5-10 parts of a heat-resistant modifying agent and 4-7 parts of a lubricating agent. The reinforcing ring for the reversing device has the advantages that the glass fibers and the aramid fibers are added, so that the mechanical strength of the reinforcing ring is improved; meanwhile, the toughening agent is added, so that the toughness of the reinforcing ring is improved to a certain extent, and the reinforcing ring is not prone to breakage; the lubricating agent is added, so that the abrasion resistance of the reinforcing ring is improved, the reinforcing ring is not prone to abrasion, the integrality of the reinforcing ring is guaranteed to a certain extent; the heat-resistant modifying agent is added, so that the heat resistance of the reinforcing ring is improved, and the reinforcing ring can work in a high-temperature environment for a long time.

The invention discloses a scroll compressor, relating to the technical field of manufacturing of fluid machinery. The scroll compressor comprises a movable scroll plate, a static scroll plate and bearings installed in a bearing carrier on the back surface of the movable scroll plate, wherein the static scroll and the movable scroll mesh with each other to form a variable-volume compression chamber. The invention is characterized in that at least two groups of through holes are drilled from the inner end of a slip ring groove at the back end surface of the movable scroll plate to the inner cavity of the bearing carrier, so that lubricating oil outside the movable scroll plate can smoothly enter the inner cavity of the bearing carrier of the movable scroll plate. Compared with the prior art, the invention can enable the lubricating oil outside the bearing carrier of the movable scroll plate to enter the inner cavity of the bearing carrier through the drilled channels, so that the bearings installed in the bearing carrier can be sufficiently cooled and lubricated, thereby greatly reducing the phenomenon of bearing burnout caused by bearing overheating due to defective lubrication or oil shortage of the bearings.

The invention relates to the field of mold guide columns, in particular to a self-lubricating type stamping mold guide column special for a punching machine. The stamping mold guide column comprises alower shaft shoulder and an outer guide sleeve; mounting holes are formed in the inner side of the lower shaft shoulder, and a column body is movably installed on the outer side of the upper end of the lower shaft shoulder; a spring is arranged on the outer surface of the column body; the outer side of the lower end of the outer guide sleeve is fixedly provided with a steel ball guide sleeve, andsteel balls are movably installed on the inner surface of the steel ball guide sleeve; and an upper shaft shoulder is fixedly installed on the outer side of the upper end of the outer guide sleeve. According to self-lubricating type stamping mold guide column special for a punching machine, first oil separation outlets, second oil separation outlets, an oil guide pipe and a guide sleeve inner wall are arranged, the guide sleeve inner wall is not attached to the outer guide sleeve so that a cavity is formed, oil can be stored, oil can be discharged at the same time through the oil separation outlets which are alternately installed in a staggered mode, and therefore the lubricating effect is improved, multiple oil injection grooves are replaced by the single oil guide pipe, production costof the column body is reduced, and better application prospects are brought.

The invention discloses a gap filler which comprises the following components in parts by weight: 30-70 parts of quartz sand, 20-30 parts of Portland cement, 3-10 parts of antioxidant, 1-3 parts of limestone, 1-3 parts of organosilicon leveling agent, 1-2 parts of mold preventive and 5-10 parts of inorganic aluminum salt waterproofing agent. The gap filler disclosed by the invention has the advantages of favorable water resistance, mold resistance and oxidation resistance, is easy and safe for construction, and thus, is a favorable gap filler for spreading and attaching ceramic tiles.

The invention provides latex abrasive base paper, which is prepared from the following raw materials in parts by weight: 30-50 parts of cornstalk fiber, 100 parts of high-density cotton linter pulp, 5-12 parts of polypropylene fiber, 20-40 parts of alkali-free glass fiber chopped strands and 3-8 parts of a ceramic fiber; the base paper is prepared from the following raw materials in parts by weight: 0.1-4 parts of amphoteric polyacrylamide, 0.2-0.8 part of modified starch light calcium carbonate, 0-0.2 part of polyoxyethylene with the molecular weight of 2500000 to 3000000, 0-0.2 part of an antifoaming agent and 5-10 parts of latex. The latex abrasive base paper has the characteristics of being good in abrasive resistance, good in flexibility and high in tensile strength.

A technology for manufacturing tubular metal casing includes such steps as cutting raw tube short by predefined size, cold die pressing of raw tube segment, surface treatment, and post-treating.

The invention belongs to the field of fluid motive sealing and particularly relates to a metal self-lubrication piston ring. A plurality of arc grooves are evenly formed in the front sealing face and the back sealing face of a piston ring body respectively, and accordingly a thermal fluid dynamic force wedge effect is generated, the sealing performance of the piston ring is improved, sealing face lubricating performance is improved, liquid flows in a circulating mode along with the arc grooves, and radiating performance is good. In addition, the piston body is made of CuSn95C5 materials, the elasticity, the fatigue resistance, the abrasive resistance, the machinability and the self-lubricating anti-attrition performance of the piston ring body are greatly improved.

The invention relates to a rolling bearing (1), comprising rolling elements (4) and an outer race (2), wherein an outer shell (12a, 12b) of the outer race (2) comprises two circumferential grooves (10, 11) axially spaced at least by the amount of the axial extent of the rolling elements (4), and wherein a first part of the outer shell (12b) axially between the two grooves (10, 11) is radially retracted relative to a second part of the outer shell (12b) axially outside of the grooves (10, 11), and wherein the outer race comprises a substantially constant thickness in the area of the first part of the outer shell (12a). In order to provide a simple rolling bearing that is inexpensive to produce and fits in a standard installation space, the invention proposes that the ratio for each groove between a radial wall thickness (B) of said groove and an axial wall thickness (A) of said groove is in the range from 0.5 to 1.5, wherein the radial wall thickness (B) corresponds to the smallest radial wall thickness of the outer race, and wherein the axial wall thickness (A) corresponds to the smallest axial distance of the groove from an adjacent end face (14, 15) of the outer race.

The invention discloses a pharmaceutical preparation containing rifaximin gel and rifaximin oral emulsion and a preparation method thereof, wherein the gel comprises rifaximin and a gel matrix, the mass ratio of the rifaximin to the gel matrix is (2-80):(5-64), and the gel matrix comprises 2-30 parts by weight of a water-soluble gel matrix and 0.5-2 parts by weight of a modifier; and the rifaximin oral emulsion comprises 1-40 parts by weight of rifaximin, 50-350 parts by weight of an oil phase, 1-300 parts by weight of an emulsifier, and 0-150 parts by weight of a co-emulsifier. In the preparation, on the premise of guaranteeing that the dose of a main drug is appropriate, through the selection of auxiliary materials and preparation methods, rifaximin is prepared into gel or oral emulsion, thereby facilitating the oral administration and absorption of drugs, and achieving relatively high bioavailability. Meanwhile, a newer and better dosage form choice is provided for clinic.

The invention discloses a laser cleaning head capable of rotating based on a circular wedge-shape prism and a using method. The laser cleaning head comprises a shell fixedly connected with optical fiber, a beam shaping part arranged in the shell, at least one circular wedge-shape prism driven to rotate around an optical axis, and a driving component for driving the circular wedge-shape prism, wherein the light extraction point of the optical fiber, the beam shaping part and the circular wedge-shape prism are arranged on the same optical axis. The circular wedge-shape prism rotates to scan, andthe laser cleaning head reduces the system size, is adapted to the light beam with a larger diameter, improves the stability and the capacity of resisting disturbance and reduces the driving controldifficulty. In addition, the invention further provides a unique cleaning scanning path, and the unique cleaning scanning path meets the application demand and has certain practical significance.

The invention discloses a gap filler which comprises the following components in parts by weight: 30-70 parts of quartz sand, 3-10 parts of antioxidant, 1-3 parts of limestone, 1-3 parts of organosilicon leveling agent, 1-2 parts of mold preventive and 10-30 parts of magnesium silicate. The gap filler disclosed by the invention has the advantages of favorable wear resistance, low cracking tendency, mold resistance and oxidation resistance, is easy and safe for construction, and thus, is a favorable gap filler for spreading and attaching ceramic tiles.

The invention discloses a two-stage compressor which comprises a shell, a film, a first connecting pipe, a second connecting pipe, a first one-way valve, a second one-way valve, a mounting rack, a rotation shaft, a driving unit, a first runner, a second runner, a first piston rod, a second piston rod, a first piston and a second piston; an air inlet, a connecting hole and an air outlet are formed in the shell; a first mounting hole and a second mounting hole are formed in the top wall of the shell; a first accommodating cavity and a second accommodating cavity are formed in the shell; the air inlet, the connecting hole and the first mounting hole communicate with the first accommodating cavity; the connecting hole, the air outlet and the second mounting hole are communicated with the second accommodating cavity; the film is arranged in the second accommodating cavity; the first end of the film is hinged to the side wall of the shell; the second end of the film is a free end; one end of the first connecting pipe is connected with the air inlet; one end of the second connecting pipe is connected with the air outlet. The two-stage compressor is excellent in air compression effect.