49results about How to "Stable lubrication" patented technology

The invention relates to the technical field of sliding bearings, in particular to a bush-tilting dynamic pressure bearing implementing pressure fluid inner feedback supporting on a bush back. The bush-tilting dynamic pressure bearing specifically comprises a bearing outer ring, a bush and a mounting assembly; and an oil gathering tank is arranged on the sliding face of the bush, gathers a pressure lubrication fluid on the sliding face and feeds back and guides the pressure lubrication fluid into an oil cavity formed in the back face of the bush through an oil hole to form supporting force forthe bush. A deformation structure is arranged in the middle of the bush to divide the bush into two blocks, and the mounting assembly applies radial elastic compressing force to the bush. When the bearing works, under the effect of the supporting force of the oil cavity in the back face of the bush, the corresponding block of the bush overcomes the radial elastic compressing force and spindle load force to be upwarped with the deformation structure as a supporting point to achieve bearing bush tilting, and a convergent gap is formed to enable the bearing to achieve the good lubrication bearing effect; the back face of the bush and the inner surface of the bearing outer ring achieve full-contact supporting, and thus supporting stability is facilitated; and the working flow of the bearing can be additionally increased through the generated inner feedback lubrication flow, and thus cooling of the bearing is greatly facilitated.

The invention discloses a compound-type environmentally-friendly fuel oil solution and a preparation method thereof and relates to a fuel oil solution and a preparation method thereof, which can be used for solving the problems that only a fuel oil additive with a single function can be produced in our country; the manufacturing process is not environmentally friendly; a high-quality fuel oil additive mainly depends on import to be obtained; the high-quality fuel oil additive product at abroad is synthesized by adopting a process method of blending, emulsification and sulfonation; the productive process is complex; the operation is not safe; the produced product performance is not stable; and poisonous and harmful substances such as sulfide, acid and the like are generated in the production and use processes. The compound-type environmentally-friendly fuel is prepared by the following step: 1. carrying out catalyzed oxidation; 2. complexing; 3. refining; and 4. filtering and standing. The invention relates to the production field of fuel oil and product oil.

The present invention provides a method for the preparation of a cross-linked hydrophilic coating of a hydrophilic polymer on a substrate polymer surface of a medical device, involving the use of a polymer solution comprising 1-20% by weight of a hydrophilic polymer, 0-5% by weight of additive(s), and the balance of a vehicle with plasticizing effect on the hydrophilic polymer, wherein the vehicle comprises at least one plasticizer having a solubility in water of at least 6 g / L, a boiling point above 210° C. at 760 mmHg, and Hansen δH parameter of less than 20. Furthermore, the invention provides a medical device, e.g. a catheter or guide wire, provided with such a hydrophilic coating. The invention also provides the use of specific polymer solution for the preparation of a cross-linked hydrophilic coating.

The invention discloses a gap-controllable mechanical sealing device based on a hinge structure. The gap-controllable mechanical sealing device comprises a mechanical sealing device body and an end face gap adjusting and controlling device, the mechanical sealing device body comprises a shell assembly, a static ring assembly, a movable ring assembly and a rotating shaft, the shell assembly sleeves the rotating shaft in a clearance manner, the static ring assembly comprises a static ring seat and a static ring, the static ring seat sleeves the rotating shaft in a clearance manner, the static ring is provided with a static ring sealing surface facing the movable ring assembly, the hinge structure is formed between the static ring sealing surface and the rear end part of the static ring, the movable ring assembly comprises a spring seat, a push ring and a movable ring which are sequentially and coaxially arranged on the rotating shaft in a sleeving mode from the high-pressure side to the low-pressure side, the movable ring is provided with a movable ring sealing face facing the static ring, a sealing gap is formed between the movable ring sealing face and the static ring sealing face, the end face gap adjusting and controlling device comprises a monitoring mechanism and a control mechanism, the monitoring mechanism comprises an ultrasonic transducer and a flow meter, and the control mechanism comprises a piezoelectric actuator, a signal conditioner and a microprocessor. The gap-controllable mechanical sealing device has the beneficial effects that the size of the sealing gap can be controlled, and a sealing end face is stably lubricated.

To form an internal combustion engine piston for high speed rotation by realizing a lightweight, compact structure. A top ring groove 2 and an oil ring groove 4 are formed in a circumferential part of a crown part 1, and lubricating holes 5 are provided at inner parts of the oil ring groove 4. A pair of piston boss parts 6 are provided at mutually facing positions under the crown part 1 to be continuous with it, and a skirt part 7 is provided at 90 DEG C. to it. A lower end 12 of the skirt part 7 is set above a lower end 11 of the piston boss part 6, and lubricating holes 10 are provided above the skirt part 7, and under and close to the oil ring groove 4.

The invention belongs to the technical field of machinery, in particular, relates to a steam turbine bearing, and solves such technical problems as unreasonable design in the prior art. The steam turbine bearing comprises two bearing pads capable of splicing as a cylindrical body; annular thrust surfaces are respectively arranged at two ends of the cylindrical body; an inner lubricating structure is arranged on the inner side of the cylindrical body, and is connected with an oil supply structure arranged on the cylindrical body and capable of supplying oil to the inner lubricating structure; a thrust surface lubricating structure is arranged on the annular thrust surface; and the inner lubricating structure and the thrust surface lubricating structure are connected through an oil separation structure arranged on the cylindrical body. The steam turbine bearing has the following advantages: (1) the design is more reasonable; an oil film is formed between the bearing and a shaft body; the thrust surfaces always can be stably lubricated to effectively prevent wear thereof; and the use performance is improved; and (2) lubricating oil is used for circular lubrication, and a lubricating agent can be cooled, so that the heat dissipation can be further accelerated, meanwhile, the resource is saved, and the cost is reduced.

The invention discloses a stably-running lathe tool turret assembly. According to the technical scheme, the stably-running lathe tool turret assembly is characterized in that a machine shell is included and provided with a fixed shaft; an annular tool disc capable of rotating around the fixed shaft is arranged on the outer portion of the fixed shaft in a sleeving manner; a gear disc is coaxially and fixedly arranged on the tool disc; a drive motor used for driving the gear disc is arranged in the machine shell; a mounting ring is fixedly arranged on the machine shell; the gear disc is arranged on the outer wall of the mounting ring in a sleeving manner; and a sliding bearing is arranged between the mounting ring and the gear disc. In the rotating process, the tool disc is high in stability, and tool disc pressure dispersion is uniform.

The invention discloses a cleaning solution for aqueous grinding, which takes sodium ethylenediamine tetraacetate as a main agent, an alcohol ether surfactant and oleylamine as grinding activating agents, liquid alkane as lubrication and protection synergist, and alcohols and de-ionized water as solvents. The cleaning solution provided by the invention has the advantages of low cost, no toxin, no harm, no corrosion on the skin, no stimulation, no danger on human body and no pollution on the environment; the cleaning solution can provide stable lubrication in the process of electromagnetically grinding and has good washing capability and contamination resistance on oil for processing; the cleaning solution is good for protecting magnetic grinding materials and work pieces, prolonging the service life of the grinding materials and shortening the grinding time; by utilizing the cleaning solution, the grinding time of the same work piece is 20% of that of the cleaning solution in the prior art, so that the use cost is reduced and the service life of the cleaning solution is longer.

The invention belongs to the technical field of machinery, in particular, relates to a steam turbine bearing, and solves such technical problems as unreasonable design in the prior art. The steam turbine bearing comprises two bearing pads capable of splicing as a cylindrical body; annular thrust surfaces are respectively arranged at two ends of the cylindrical body; an inner lubricating structure is arranged on the inner side of the cylindrical body, and is connected with an oil supply structure arranged on the cylindrical body and capable of supplying oil to the inner lubricating structure; a thrust surface lubricating structure is arranged on the annular thrust surface; and the inner lubricating structure and the thrust surface lubricating structure are connected through an oil separation structure arranged on the cylindrical body. The steam turbine bearing has the following advantages: (1) the design is more reasonable; an oil film is formed between the bearing and a shaft body; the thrust surfaces always can be stably lubricated to effectively prevent wear thereof; and the use performance is improved; and (2) lubricating oil is used for circular lubrication, and a lubricating agent can be cooled, so that the heat dissipation can be further accelerated, meanwhile, the resource is saved, and the cost is reduced.

The invention provides a movable intelligent lubricating device for a fixed belt conveyor. The device comprises a vehicle frame, a plunger pump is fixed to the vehicle frame, the power input end of the plunger pump is connected with a plunger motor through a speed reducer, the plunger motor is connected with an intelligent controller through a control wire, the pump body of the plunger pump is provided with an oil drum, an oil inlet of the pump body is made communicated with an oil outlet of the oil drum and provided with an oil inlet valve, the pump body is provided with multiple oil outlets, the top end of the oil drum is provided with an oil injection opening, the vehicle frame is provided with a walking motor, the walking motor drives a driving wheel to rotate through a transmission mechanism, and the driving wheel and a driven wheel are each provided with a brake device. According to the movable intelligent lubricating device, the two motors are arranged, the two motors are controlled by the intelligent controller to drive the plunger pump and the walking wheel to work, the plunger pump can inject oil to the belt conveyor as needed for lubrication, the walking wheel drives the plunger pump and the oil drum to move in the length direction of the belt conveyor, and different portions of the belt conveyor are regularly, quantitatively and reasonably lubricated.

An oil circuit opening and closing system of a linear compressor, which can help to supply oil smoothly during the operation of the compressor, and when the compressor is suspended, part of the oil that has been supplied to the compressor is retained in it, so that Helps with smooth lubrication during compressor restart. It includes: a sealed container filled with oil at the bottom; a frame communicated with first and second oil grooves; a cylinder; a linearly reciprocating piston with the second oil groove formed on a part of the outer peripheral surface of the piston; an exhaust cover; an oil supply communicated with the first oil tank; and a switch device for opening and closing the oil inflow passage.

The invention discloses equipment with an overrun clutch. The equipment structurally comprises a fixing support, two or more fixing feet, a motor, a fixing shaft sleeve, a transmission spindle and theoverrun clutch. The middle of the upper end of the fixing support is mounted at the bottom of the fixing shaft sleeve in a welded mode, and the fixing shaft sleeve is of a circular structure and is connected with the left end of the motor in a sleeve-fit mode. The two or more fixing feet are evenly distributed at the two ends of the fixing support at equal distances. According to the overrun clutch arranged on the equipment, when a sewing machine needs to withdraw a needle, a clutch shell rotates clockwise and makes contact with a bevel face of a driven block in a driven mechanism directly topress downwards, and then needle withdrawing rotating can be conducted smoothly; and the driven mechanism transfers power into an oil seal mechanism through a transmission mechanism while being in transmission, and then an oil conveying pipe is connected for lubricating. During overall using, needle withdrawing rotating is convenient and rapid, the interior of the overrun clutch is stably lubricated, and thus the part life of clutch is prolonged.