37results about How to "Increase oil storage space" patented technology

The invention belongs to the field of functional polymer materials, and relates to preparation of compound polyurethane foam, in particular to a preparation method and application of hollow MnO2@SiO2 nanomaterial modified polyurethane foam. The method comprises the steps of preparing iron oxide by a hydrothermal method, wrapping silicon dioxide by a template method, preparing MnO2@SiO2 by the hydrothermal method, performing modification by using a silane coupling agent KH570 to form a hydrophobic and oleophylic modified MnO2@SiO2 nanomaterial, and finally, uniformly dispersing the modified MnO2@SiO2 nanomaterial in polyurethane foam for free foaming to form the polyurethane foam with good oil absorbency. The hollow MnO2@SiO2 nanomaterial-polyurethane foam 3D (three dimensional) oil absorption material with a 3D porous structure is obtained by compounding the hydrophobic modified hollow MnO2@SiO2 nanomaterial and the polyurethane foam material; the hydrophobicity of a polyurethane material is improved obviously; an oil storage space is increased; and the oil absorbency is effectively improved. The method and the application have the characteristics of simple operation, low cost, environment friendliness, easy separation, greenness, environmental protection, energy conservation and relatively good practicality.

The invention relates to a preparation method of a super-hydrophobic cellulose / chitosan compound aerogel oil-water separation material. The method includes the first step of cellulose / chitosan compound solution preparation, the second step of cellulose / chitosan compound aerogel preparation, and the third step of super-hydrophobic cellulose / chitosan compound aerogel preparation. Prepared cellulose / chitosan compound aerogel has a high pore rate, the surface of the cellulose / chitosan compound aerogel has high roughness, the preparation process is simple, and raw materials are wide in source, low in cost, green and environmentally friendly. By means of the related hydrophobic modification method, super-hydrophobic fruit can be rapidly and effectively obtained in an energy-saving mode, and greasy dirt collection, oil-water separation and the like can be economically and rapidly achieved.

The invention discloses a butting octagonal frustum pyramid type floating production and oil storage system. A floating body of the butting octagonal frustum pyramid type floating production and oil storage system is provided with an upper structural body in an octagonal frustum pyramid shape and lower structural body in a regular octagonal frustum pyramid shape. Under a combined state, the bottom face, with a small area, of the upper structural body is fixedly connected with the bottom face, with a small area, of the lower structural body to form a connecting surface. The axis of the upper structural body and the axis of the lower structural body are arranged in an identical straight line, the bottom, with a big area, of the upper structural body is an upper deck of a floating structure, and the bottom, with a big area, of the lower structural body is a lower bottom of the floating structure. The connecting surface is the full loading water plane line of the floating structure. On the basis of the mentioned structure, a mooring locating module, an oil and gas production module, a storage module, an outward conveying module and other function modules are arranged to form a novel floating type production and oil storage system. The floating body has the appearance characteristics similar to a hourglass, the butting octagonal frustum pyramid type floating production and oil storage system can make up the defects of a traditional floating production and oil storage system at the aspects of seakeeping performance, strength fatigue, pipeline layout and the like, and the functions of the butting octagonal frustum pyramid type floating production and oil storage system are expanded.

The invention discloses a butt joint circular table type floating production oil storage system. According to the oil storage system, a floating body is provided with an upper part structural body which is in a circular table shape and a lower part structural body which is in a circular table shape; in a combined state, the bottom surface, which has a small area, of the upper part structural body is fixedly connected with the bottom surface, which has a small area, of the lower part structural body to form a connecting surface serving as a fully-loaded waterline plane of a floating type structure; and on the basis of the combined state, functional modules for mooring positioning, oil and gas production, storage, outward conveying and the like are arranged to form the novel floating production oil storage system. The floating body has the characteristic of being similar to the appearance of a sandy clock, and can overcome the defects of aspects of seakeeping capacity, strength fatigue, the arrangement of pipelines and the like in the conventional floating production oil storage system and expand the performance of the conventional floating production oil storage system. Therefore, the butt joint circular table type floating production oil storage system can realize the integration of multiple functions of well drilling, mining, storage, production, processing, outward conveying and the like of large-scale oil and gas in various sea areas easily, and has a good economic benefit.

The invention discloses an air valve bridge with increased pilot fit length. The air valve bridge comprises an air valve bridge guide rod and an air valve bridge body, wherein the air valve bridge body is provided with an air valve bridge guide hole; the air valve bridge guide hole is used for mounting the air valve bridge guide rod. The air valve bridge is characterized in that the bottom of theair valve bridge guide hole is provided with an air valve bridge inner expansion hole; the diameter of the air valve bridge inner expansion hole is larger than that of the air valve bridge guide hole,so that the air valve bridge guide rod can extend into the air valve bridge inner expansion hole. By adopting the air valve bridge, the bottom of the air valve bridge guide hole is provided with theair valve bridge inner expansion hole, so that the pilot fit length is improved, and the space is used fully. Moreover, an oil storage space is added, so that lubrication is facilitated.

The invention discloses a hub speed reducer which comprises a hub (1). A fixing support (2) is fixedly arranged on one side of the hub (1), and a double-tyre steel rim (6) is fixedly arranged on the other side of the outer edge of the hub (1). A first reduction gear is fixedly arranged in the fixing support (2) and connected with a connecting shaft (4), a second reduction gear is arranged at the extending end of the connecting shaft (4), and an oil mist separator (7) is fixedly arranged at the upper end of the first reduction gear. The two reduction gears are arranged on the hub and the fixing support, and the double-tyre steel rim is fixedly arranged on the hub, so that the transverse space is saved; the oil mist separator and a water circulating structure are adopted, so that the lubricating effect and the cooling effect are improved, and the service life is prolonged.

The invention discloses a radial double vibration absorption long oiling period high-speed energy-saving spindle, comprising a pole disk and a spindle base. The spindle base is a radial double vibration absorption long oiling period spindle base, and comprises a spindle insert, a damper, and a radial double vibration absorption long oiling period spindle foot. The spindle insert comprises an upper bearing pedestal and an elastic pipe, and other elements. The upper part of the elastic pipe and the inner bore of the bearing pedestal are in interference fit. The damper is sleeved on the lower part of the elastic pipe. The spindle blade of the pole disk is inserted into the elastic pipe. The spindle pivot of the spindle blade contacts the element on the bottom of the elastic pipe. The radial double vibration absorption long oiling period spindle foot comprises a vibration damping sleeve and a spindle foot casing. The integrated vibration damping sleeve is in a cylindrical shape, one end of the vibration damping sleeve is provided with an annular projection. The spindle foot casing is in a blind hole shape. The vibration damping sleeve is sleeved in the hole of the spindle foot casing, and the projection and the blind hole of the spindle foot casing are in interference fit. The lower part of the bearing pedestal is pressed in the inner bore on the upper part of the bearing pedestal. The spindle is advantaged by absorbing radial acting forces twice, the radial acting forces being generated in high-speed running of the spindle, and increasing reserve fuel quantity in the spindle by one time.

The invention relates to a chain shaft of a chain and a manufacturing method of the chain shaft. The chain shaft of the chain comprises two end faces located at the two opposite ends of the central axis in a spaced mode, a peripheral face around the central axis and a plurality of oil storage grooves, wherein the oil storage grooves surround the central axis respectively and sink from the peripheral face to the central axis at intervals, and the periphery of each oil storage groove is closed and is not communicated with the end faces and the other oil storage grooves. When the chain shaft is installed on the chain, the oil storage grooves can enlarge the oil storage space of the chain so as to improve the smoothness and the abrasion resistance in operation of the chain, and meanwhile the service life of the chain can be prolonged. The manufacturing method of the chain shaft of the chain includes the blank knurling step, a blank is knurled in a rolling mode to form the chain shaft, and thus the chain shaft is easy to machine and form in the manufacturing process.

The invention relates to the technical field of shield machines, in particular to a hobbing cutter with the function of adjusting the inner cavity pressure balance of a bearing. The hobbing cutter comprises a cutter body, a cutter shaft, a cutter ring, the bearing, an end cover and a floating seal device; the cutter shaft is installed in the cutter body through the bearing, the end cover and the floating seal device are installed at the two ends of the cutter body in a matched mode, the cutter ring is installed on the outer ring of the cutter body, and the cutter shaft is provided with a pressure balancing device which is communicated with an inner cavity of the bearing; the pressure balancing device comprises an oil hole drilled in the cutter body and a protective cover, a pressure transmitting bag is arranged in the oil hole, the protective cover fixedly and tightly presses the pressure transmitting bag, and the oil hole is communicated with the inner cavity of the bearing through a first pressure transmitting hole. According to the hobbing cutter, the structure is simple, the pressure balancing device is additionally arranged in an existing cutter structure and arranged on the cutter shaft, space is not occupied, the effectiveness of the bearing is guaranteed, and the effective service life of the cutter is prolonged.

The invention provides a fan provided with an oil bearing. The fan provided with the oil bearing comprises a casing, the oil bearing, a sealing oil cover, a stator and a rotator which can rotate relative to the stator; the casing comprises a shaft seat; the stator is sleeved to the periphery of the shaft seat; the oil bearing is accommodated inside the shaft seat; the sealing oil cover is arranged at the bottom of the oil bearing; lubricating fluid inside the oil bearing is sealed inside the shaft base; the rotator comprises a hub, fan blades and a rotating shaft which is arranged inside the oil bearing and can rotate relative to the oil bearing; the hub is arranged on the periphery of the stator; the fan blades are arranged on the periphery of the hub in a ring mode; the rotating shaft vertically extends towards the shaft base from the hub center; a plurality of sinking grooves are formed in the bottom of the outer circumference of the oil bearing. The fan provided with the oil bearing has the advantages of prolonging the service life due to the facts that part of spare lubricating oil is stored inside the sinking grooves which are formed in the bottom of the outer circumference of the oil bearing and the spare lubricating oil is automatically supplied when immersion oil precipitation inside the oil bearing is deficient.

The invention discloses a grease stain resistance separation-type high-speed energy-saving spinning spindle. The grease stain resistance separation-type high-speed energy-saving spinning spindle is characterized by comprising a spindle bolster base, an inner spindle bolster tube, a sealing ring, an outer spindle bolster tube, an inner and outer spindle bolster tube sealing cover, a support block,a through hole, an outer spindle bolster oil valve and a spindle bottom oil valve; the inner spindle bolster tube, the outer spindle bolster tube and the spindle bolster base are each an independent body and form a spindle bolster together, wherein the lower end of the inner spindle bolster tube tightly cooperates with the outer spindle bolster tube, the portion between the inner spindle bolster tube and the outer spindle bolster tube is filled with damping oil, oil filling operation is completed by the outer spindle bolster oil valve, and the upper end of the inner spindle bolster tube and the upper end of the outer spindle bolster tube are sealed by the inner and outer spindle bolster tube sealing cover. The grease stain resistance separation-type high-speed energy-saving spinning spindle has the advantages that due to the separation-type spindle bolster, the washing and oil filling problems of spinning spindles are effectively solved; due to the inner spindle bolster tube, oil storage space is enlarged, the oil change period of the spindle is prolonged, the high-speed vibration absorption and energy saving function of a dual vibration absorption system is significant, and not only can actual engineering requirements in the textile spinning be met to fill a technical gap, but also great social and economic benefits can be generated.

The invention discloses an outer bearing cover structure, which comprises an outer cover body, wherein the outer cover body has a hollow structure; a plurality of solid bolt assembly parts and tapped oil filler hole parts are uniformly distributed on the periphery of the outer cover body, and are arranged at intervals. According to the outer bearing cover structure, the bolt assembly parts and the tapped oil filler hole parts are solid, and the other part is hollow, so that an oil storage space can be enlarged as much as possible, waste oil can be changed at one time when a motor is overhauled, and an intermediate oil drain link is eliminated; the outer bearing cover structure is simple and convenient to machine; moreover, an oil drain pipe is not required to be assembled, so that the outer bearing cover structure is low in cost.

The invention discloses a purification method of crude oil and a cleaning method of an oil storage tank. The purification method of the crude oil comprises the following steps of demulsifying and mixing hot water and oil which is conveyed from the oil storage tank and contains the crude oil to form a mixture; primarily separating the mixture formed by demulsifying and mixing, and conveying the primarily-separated crude oil to a recovery oil tank; deeply separating the remaining mixture after the primary separation is finished, and conveying the separated crude oil to the recovery oil tank; finally separating the remaining mixture after the deep separation is finished, and conveying the separated crude oil to the recovery oil tank; separating the remaining mixture after the finial separation is finished to remove residues. According to the purification method and the cleaning method disclosed by the invention, when the oil storage tank is cleaned, the cleaning and the discharging of the residues at the bottom of the tank are realized, so that an oil storage space of the oil storage tank is increased, and the storage quality of the crude oil is improved.

The invention discloses a rotary mooring conveying system used for oil production operation. The rotary mooring conveying system comprises a plurality of rotary conveying connectors. Each of the rotary conveying connectors comprises an inner conveying ring; an outer conveying ring, which can be rotated with respect to the inner conveying ring; a conveying structure, which is disposed between the inner conveying ring and the outer conveying ring, and can be used to maintain the conveying during the rotary process; an inner conveying unit, which is connected with the inner conveying ring; an outer conveying unit, which is connected with the outer conveying ring. The inner conveying rings of the rotary conveying connectors are fixedly connected together. In the ocean marginal oilfield development field, the rotary mooring conveying system can be used as the conveying equipment used for exploitation operation by aiming at the compatibility between the functions of the wellhead operation platforms and the mooring platforms.

The invention provides a novel bearing retainer. The retainer is of a cylinder structure composed of a left side ring, a right side ring and a plurality of cross beams connected between the two side rings. Pockets for placing rolling bodies are arranged between the adjacent cross beams, fluid grooves are symmetrically formed in the positions, corresponding to the cross beams, of the two side ringsof the retainer, the fluid grooves are uniformly distributed on the inner ring surfaces or the outer ring surfaces of the side rings along the circumferential directions of the two side rings, and the opening areas of the fluid grooves are greater than the groove bottom areas of the fluid grooves; when the retainer is guided outwards, the fluid grooves are outer ring inwards-concave parts which are formed on the outer guide face of the retainer side ring and penetrate through the retainer side ring in the axial direction; when the retainer is guided inwards, the fluid grooves are axially-through inner ring outer concave parts formed on the inner guide surface of the retainer side ring. By utilizing the fluid dynamic pressure characteristic, the retainer can suspend at the rotating axis ofthe bearing when the bearing rotates at a high speed, the vibration and noise of the bearing are reduced, the rotating precision is improved, and the service life of the bearing is prolonged.

The invention belongs to the technical field of environmental protection materials, and specifically discloses a hydrophobic lignin / cellulose airgel oil-water separation material and a preparation method and application thereof. The preparation method comprises the following steps: adding lignin and cellulose to an alkaline solution to obtain a lignin / cellulose mixed solution; adding a crosslinking agent to obtain a lignin / cellulose composite hydrogel; solvent exchange and drying The elastic airgel is obtained, and then the elastic airgel is hydrophobically modified by a chemical vapor deposition method using a silane coupling agent to obtain a hydrophobic lignin / cellulose airgel. The lignin / cellulose airgel oil-absorbing material prepared before and after hydrophobic modification has a highly porous network structure, and the prepared oil-absorbing material is placed in an oil-water mixture, and the absorption rate is as high as 10 to 25 times its own weight. After the oil is absorbed, the oil can be extruded by extrusion, and the oil-absorbing material can be regenerated, and the recycling still has a high oil-absorbing efficiency.

The invention provides a fan provided with an oil bearing. The fan provided with the oil bearing comprises a casing, the oil bearing, a sealing oil cover, a stator and a rotator which can rotate relative to the stator; the casing comprises a shaft seat; the stator is sleeved to the periphery of the shaft seat; the oil bearing is accommodated inside the shaft seat; the sealing oil cover is arranged at the bottom of the oil bearing; lubricating fluid inside the oil bearing is sealed inside the shaft base; the rotator comprises a hub, fan blades and a rotating shaft which is arranged inside the oil bearing and can rotate relative to the oil bearing; the hub is arranged on the periphery of the stator; the fan blades are arranged on the periphery of the hub in a ring mode; the rotating shaft vertically extends towards the shaft base from the hub center; a plurality of sinking grooves are formed in the bottom of the outer circumference of the oil bearing. The fan provided with the oil bearing has the advantages of prolonging the service life due to the facts that part of spare lubricating oil is stored inside the sinking grooves which are formed in the bottom of the outer circumference of the oil bearing and the spare lubricating oil is automatically supplied when immersion oil precipitation inside the oil bearing is deficient.

The invention discloses a bearing grease return structure comprising an annular bearing ring cavity arranged outside a bearing in a surrounding mode. The bearing ring cavity communicates with the bearing so as to receive grease lubricating the bearing. A grease return pipe set is connected to the bearing ring cavity and is connected with a grease return pump. The grease return pipe set is used forguiding grease entering the bearing ring cavity into the grease return pump when an engine works normally, and for storing grease after the engine is stopped so as to prevent the grease from being held in the bearing ring cavity. In the bearing grease return structure, no large-volume grease receiving pool structure is needed, therefore no large installing space is needed in a case, the structureof an original engine is not changed, and the number of engine parts and the weight of the engine are not increased. In addition, after the engine is stopped, the bearing grease is stored in the grease return pipe set away from the turbine end, no grease is in the bearing ring cavity, thus grease coking in the bearing ring cavity can be avoided effectively, and then work performance of an enginelubrication system is improved greatly.

The invention discloses a bearing chamber for a vertical pump. The bearing chamber comprises a vertical bearing chamber cavity provided with stepped holes. The bearing chamber is characterized in thatthe inner wall of the vertical bearing chamber cavity is fixedly connected with two or more inwards bulged bearing outer ring supporting rib plates in a spaced manner; each bearing outer ring supporting rib plate comprises a radial supporting block provided with an inner arc surface, and a longitudinal supporting step fixedly connected with the lower end of the radial supporting block; the innerends of the longitudinal supporting steps are located on the inner sides of the inner arc surfaces; and the two side surfaces of each radial supporting block are oblique surfaces and a certain included angle is formed between each oblique surface and the vertical direction. The contact areas between lubricating oil and the inner wall of the bearing chamber and between the lubricating oil and a bearing outer ring can be increased, the lubricating and heat dissipation effects are improved substantially, an oil storage space is increase d, and normal working of the vertical pump is ensured for along time.

The invention discloses a butting octagonal frustum pyramid type floating production and oil storage system. A floating body of the butting octagonal frustum pyramid type floating production and oil storage system is provided with an upper structural body in an octagonal frustum pyramid shape and lower structural body in a regular octagonal frustum pyramid shape. Under a combined state, the bottom face, with a small area, of the upper structural body is fixedly connected with the bottom face, with a small area, of the lower structural body to form a connecting surface. The axis of the upper structural body and the axis of the lower structural body are arranged in an identical straight line, the bottom, with a big area, of the upper structural body is an upper deck of a floating structure, and the bottom, with a big area, of the lower structural body is a lower bottom of the floating structure. The connecting surface is the full loading water plane line of the floating structure. On the basis of the mentioned structure, a mooring locating module, an oil and gas production module, a storage module, an outward conveying module and other function modules are arranged to form a novel floating type production and oil storage system. The floating body has the appearance characteristics similar to a hourglass, the butting octagonal frustum pyramid type floating production and oil storage system can make up the defects of a traditional floating production and oil storage system at the aspects of seakeeping performance, strength fatigue, pipeline layout and the like, and the functions of the butting octagonal frustum pyramid type floating production and oil storage system are expanded.

The invention relates to an oil well yield-increasing environmental protection device for wellhead equipment, belonging to the oil drilling and excavation technical field. The device is provided with a lower casing connected with an oil pipe of an oil well and an upper casing connected with an oil extractor. An outer casing is connected with between the upper casing and the low casing; the inner diameter of the outer casing is twice to three times that of the upper casing or that of the lower casing; the upper casing is in sealed connection with the lower casing through a flange; an oil-reservoir pipe is communicated with the middle part of the outer casing; and an outlet of the oil-reservoir pipe is connected with an entrance of the an oil outlet pipe. The outer casing is thickened to leave an enough oil-reservoir space inside the outer casing, so that crude oil can not reach and exceed the oil-reservoir space, thereby putting an end to the phenomena of the crude oil leakage and the replacement of used tight head. The outer casing is provided with a one-way valve mechanism which makes reciprocating movement up and down with a sucker rod of the oil extractor, that is, residual energy of the sucker rod is utilized to drive the sealed one-way valve to move up and down, thereby playing a role in extracting assistedly and achieving the effect of increasing yield.

The invention relates to the technical field of electronic products. The invention particularly relates to an integrated aerosol generating device. The device comprises a main housing, a suction nozzle and an oil injection hole are formed in the top of the main housing, an oil storage bin used for storing oil and a battery bin used for containing a battery are arranged in the main housing in parallel, a battery assembly is arranged in the battery bin, an air guide pipe communicated with the suction nozzle is arranged in the oil storage bin, an atomization core assembly is arranged at the lowerend of the air guide pipe, the atomization core assembly is connected with an electrode, the battery assembly is connected with an electrode through a touch type connecting assembly, and a pull ringis further connected to the bottom of the atomization core assembly. The aerosol generating device is integrally designed, compact in structure and large in oil storage space, meanwhile, the atomization core assembly is replaced, cost is saved, and in addition, oil injection and charging can be conducted.

The invention discloses a micro fan adopting an H-shaped retaining ring. The micro fan adopting the H-shaped retaining ring comprises a retaining ring, a bearing and a fixing ring. The retaining ringis arranged in the fixing ring. The retaining ring comprises a retaining ring body. A first protruding block is arranged in the retaining ring body. A second protruding block is arranged above the retaining ring body. The bearing is pressed on the retaining ring body and the second protruding block. According to the micro fan adopting the H-shaped retaining ring, the H-shaped retaining ring is formed by the retaining ring body, the first protruding block of the retaining body and the second protruding block above the retaining ring. Pulling force of fan blades can be improved by the first protruding block of the retaining ring. Through the second protruding block above the retaining ring, buffer effect is achieved in the stress process of the retaining ring, and taking by workers is facilitated during assembling, multiple mounting of the retaining ring can be prevented, oil storing space of the fan can be improved to a certain degree.

The invention discloses a motor with oil storage funciton. The motor includes a base, a bearing, a stator unit and a rotor. The base includes a shaft tube portion having a closed end and an open end. The bearing is received in the shaft tube portion of the base. The stator unit is fixed to the base and has an insulation unit. The insulation unit has a blocking portion extending towards the open end of the shaft tube portion. The rotor includes a hub having a shaft and a permanent magnet. The shaft is rotatably coupled with the bearing, and an air gap is formed between the permanent magnet and the stator unit. The blocking portion of the insulation unit, the shaft tube portion and the bearing jointly form an enlarged oil chamber at the open end of the shaft tube portion. With the above design, the shaft tube portion can have more space to form an oil-storing structure for accommodating more lubricating oil.

The invention discloses a radial double vibration absorption long refueling cycle spindle pedestal. The radial double vibration absorption long refueling cycle spindle pedestal comprises a spindle insert, a damper and a radial double vibration absorption long refueling cycle spindle foot, the spindle inset comprises elements such as an upper bearing pedestal and an elastic tube, the elastic tube penetrates through an inner hole of the bearing pedestal, the upper portion of the elastic tube is in interference fit with the inner hole of the bearing pedestal, the damper is arranged on the lower portion of the elastic tube in a sleeving mode, the radial double vibration absorption long refueling cycle spindle foot comprises a vibration absorbing sleeve and a spindle foot shell, the vibration absorbing sleeve is integrally shaped like a tube, one end of the vibration absorbing sleeve is provided with an annular protrusion part, the non-protrusion part of the vibration absorbing sleeve is provided with a radial through hole, the spindle foot shell is shaped like a blind hole, the vibration absorbing sleeve is arranged in a spindle foot shell hole in a sleeved mode, the protrusion part of the vibration absorbing sleeve is in interference fit with the blind hole of the spindle foot shell, and the lower portion of the bearing pedestal is pressed into the inner hole formed in the upper portion of the vibration absorbing sleeve. The radial double vibration absorption long refueling cycle spindle pedestal has the advantages that radial force in the elastic tube is absorbed for two times, and oil reserve in the spindle pedestal is doubled.

The invention provides a clutch outer cover and a clutch. An oil storage tank is formed in a cover bottom in the clutch outer cover and is provided with a lubrication oil guiding-in part used for guiding lubrication oil to enter the oil storage tank and a lubrication oil guiding-out part used for guiding lubrication oil to flow out of the oil storage tank. According to the clutch outer cover, a large oil storage space can be provided, so that entering, centrifugal throwing and lubricating of the lubrication oil can be facilitated; the oil discharging amount of the oil storage tank can be controlled by adjusting the size of an oil discharging channel of the lubrication oil guiding-out part; the problem that separation of the clutch is poor due to excessive lubrication oil or lubrication isinsufficient due to excessively little lubrication oil can be overcome; the service life of the clutch can be prolonged, and the safety of the clutch can be improved; meanwhile, the clutch outer coveris simple in structure and easy to manufacture.

The invention relates to a preparation method of a super-hydrophobic cellulose / chitosan compound aerogel oil-water separation material. The method includes the first step of cellulose / chitosan compound solution preparation, the second step of cellulose / chitosan compound aerogel preparation, and the third step of super-hydrophobic cellulose / chitosan compound aerogel preparation. Prepared cellulose / chitosan compound aerogel has a high pore rate, the surface of the cellulose / chitosan compound aerogel has high roughness, the preparation process is simple, and raw materials are wide in source, low in cost, green and environmentally friendly. By means of the related hydrophobic modification method, super-hydrophobic fruit can be rapidly and effectively obtained in an energy-saving mode, and greasy dirt collection, oil-water separation and the like can be economically and rapidly achieved.

The invention provides a wear-resisting bearing bush. The wear-resisting bearing bush comprises a bearing bush body 1 and an oil injection hole 2, wherein a strip-shaped oil storage groove 3 is formed in an inner wall of the bearing bush body 1 in the axial direction; the oil injection hole 2 is communicated with the oil storage groove 3 through an oil inlet pipe 4; a solenoid valve is arranged on a side wall of the oil storage groove 3; an outlet end of the solenoid valve is connected with an oil outlet connector 5; the oil outlet connector 5 is connected with a plurality of oil outlet pipes 6; the oil outlet pipes 6 are connected with corresponding nozzles 7. The strip-shaped oil storage groove 3 is adopted so that an oil storage space is enlarged, and the acting area of lubricating oil can be enlarged in a manner of spraying by the nozzles 7, so that the bearing bush has a better wear-resisting effect. The circulation flow and speed of the lubricating oil in the oil outlet pipes 6 are controlled through the solenoid valve so that resources can be saved and the cost is reduced.

The invention discloses a crude oil purification system and an oil storage tank cleaning system. The crude oil purification system includes: an oil collection and preparation chamber for demulsifying and stirring hot water and oil containing crude oil transported from the oil storage tank to form a mixture ; the first-level air flotation treatment chamber for preliminary separation of the mixture delivered from the oil-collecting preparation room under the action of air flotation; the second-level air flotation treatment room for the deep separation of the mixture delivered from the first-level air flotation treatment room under the action of ultrasonic waves The first-level ultrasonic treatment room; the third-level air flotation ultrasonic treatment room for the final separation of the mixture delivered from the second-level ultrasonic treatment room under the joint action of ultrasonic waves and air flotation; the separation of the mixture delivered from the third-level air flotation ultrasonic treatment room centrifuge for residue. The invention realizes the cleaning and discharge of the tank bottom residue when cleaning the oil storage tank, thereby increasing the oil storage space of the oil storage tank and improving the quality of stored crude oil.