677results about "Piston rings" patented technology

The invention discloses an anti-liquid-impact compressor cylinder structure, a compressor and a wellhead natural gas compression method, and relates to the technical field of compressors, the cylinder structure comprises a cylinder barrel and a piston ring assembly, a piston cavity is formed in the cylinder barrel, the cylinder structure further comprises a partition plate, the partition plate divides the piston cavity into a working cavity and a buffering cavity, and the piston ring assembly is arranged in the working cavity; the communication channel is used for realizing mutual communication of the working cavity and the buffer cavity on the two sides of the partition plate; the partition plate is configured in the mode that when the pressure difference between the pressure of the working cavity and the pressure of the buffer cavity exceeds a set threshold value, the fixed relation of the partition plate in the piston cavity is damaged under the pressure difference between the two sides of the partition plate, the partition plate can move towards the side where the buffer cavity is located under the pressure difference, the compressor comprises the cylinder body structure, and the compression method is achieved based on the cylinder body structure. According to the scheme, the maximum pressure in the cylinder is reduced by adopting a method of expanding the clearance volume of the cylinder body when the liquid impact phenomenon occurs, and the response speed in the clearance volume expanding process can be effectively optimized.

The invention relates to the technical field of compressors, and discloses a gas piston assembly for an ultrahigh-pressure liquid-driven piston compressor, which comprises a gas piston main body, a sealing piece and a connecting piece, the air piston body comprises a first body part and a second body part which are oppositely arranged, a cylindrical protruding part is arranged in the center of the end face of one side of the first body part, and a positioning inserting hole matched with the cylindrical protruding part is formed in the center of the end face of the side, right opposite to the first body part, of the second body part. The sealing piece comprises a plurality of first piston rings and a plurality of second piston rings, the first piston rings and the second piston rings are arranged on the cylindrical protruding part in a sleeving mode and are alternately arranged, and the first piston rings are arranged close to the end face of the first main body part; the connecting piece is used for connecting the first main body part and the second main body part together after the cylindrical lug boss is inserted into the positioning insertion hole; the combined piston ring is used for replacing a traditional spring plug structure for sealing, and the sealing problem caused by extremely high pressure and temperature under the ultrahigh pressure working condition can be solved.

The invention provides an anti-sticking perfluoroether rubber sealing assembly and a preparation method and application thereof, the preparation method comprises the following steps: mixing perfluoroether rubber with a vulcanizing agent to obtain a rubber compound, and performing high-temperature vulcanization on the rubber compound to obtain a perfluoroether rubber product; carrying out surface roughening treatment on the perfluoroether rubber product; dispersing amorphous fluororesin in the fluorinated liquid to obtain coating slurry; and coating the roughened perfluoroether rubber product with the coating slurry, and carrying out segmented heating and drying to obtain the perfluoroether rubber sealing assembly. According to the anti-sticking perfluoroether rubber sealing assembly as well as the preparation method and the application thereof, the obtained perfluoroether rubber sealing assembly has relatively low friction coefficient, excellent plasma corrosion resistance and relatively small viscous force, shows excellent non-sticking performance, and can be suitable for different environments.

A combined piston ring used for a new energy hybrid power automobile engine belongs to the technical field of engines and comprises a ring body inner plate in contact with the inner side face of a main body mechanism, an ash discharge groove formed in the ring body inner plate, a scraping plate installed in a groove formed in the ring body inner plate and a plurality of shaking reeds evenly distributed between the two ring bodies. The scraping plate is in contact with the inner wall of a groove formed in the piston; in the working process of an engine, residual carbon deposits on the inner wall of a groove formed in a piston are scraped off in the rotating process of a scraping plate, the carbon deposits enter an ash discharging groove along an inclined face arranged on the scraping plate, a connecting plate makes contact with a shaking reed in the rotating process so that the shaking reed can be intermittently compressed and bounced off, the carbon deposits in the shaking reed can be prevented from being accumulated into blocks, and the service life of the connecting plate is prolonged. The carbon deposition can be effectively prevented from being accumulated in a gap between the piston ring and the piston, the piston ring is blocked, and the work of the piston is influenced.

The invention relates to the technical field of sealing rings, and discloses a wide-temperature-zone sealing ring which comprises a sealing ring body, the sealing ring body comprises a sealing layer, a thin film layer and a compensation layer, the outer portion of the thin film layer is arranged in the sealing layer, and the outer portion of the compensation layer is arranged in the thin film layer; the sealing layer and the thin film layer are supported by different materials and are made of fully-sealed elastic flexible materials, and the thickness of the thin film layer is smaller than that of the sealing layer; the compensation layer and the sealing layer are supported by different materials, and the linear expansion of the materials of the compensation layer and the sealing layer is opposite; the thickness of the compensation layer is inversely proportional to the thickness of the sealing layer according to the linear expansion coefficients of the two materials. The materials of the sealing layer and the compensation layer are selected, so that the compensation layer expands at low temperature to offset lost sealing pressure, the compensation layer shrinks at high temperature to buffer excessive extrusion, uniform contact stress of the sealing ring is maintained in extreme temperature fluctuation, and the effect of zero-damage self-adaptive sealing in the whole temperature range is achieved.

A sealing ring includes a first sealing element having a first mating surface and a second sealing element having a second mating surface. A high-pressure boundary extends across at least a portion of the first sealing element and across at least a portion of the second sealing element, and a low-pressure boundary extends across at least a portion of the first sealing element and across at least a portion of the second sealing element. The first mating surface, the second mating surface, or both, includes a recess open to the low-pressure boundary and not open to the high-pressure boundary. The recess may include a groove, for example. The first mating surface is sealed against the second mating surface by a first force acting on the first sealing element and a second force acting on the second sealing element. These forces act to pressure-lock the assembly.

A control device includes a housing having a base portion and an extension portion. The base portion of the housing has an inward facing side and an outward facing side. The control device includes a lever coupled to and pivotable relative to the housing, and a master cylinder portion supported by the housing. The master cylinder portion has a hollow fluid cylinder. The control device also includes a piston assembly supported by the housing. The piston assembly is movable relative to the master cylinder portion. At least part of the piston assembly is disposed within the master cylinder portion. The master cylinder portion is angled relative to the outward facing side of the base portion of the housing, such that the first end of the fluid cylinder is closer to the outward facing side than the second end of the fluid cylinder is relative to the outward facing side.

To provide a reciprocating pump having a piston ring exhibiting higher sealing performance.SOLUTION: The reciprocating pump includes: a pump main body having a piston that compresses a liquid and a cylinder that covers the piston from the outside; a drive unit for reciprocating the piston in a reciprocating direction; and a piston ring provided in a gap between the piston and the cylinder. An annular groove is formed on an outer peripheral surface of the piston. A space inside the cylinder is partitioned by the piston ring into a high-pressure region through which the compressed liquid flows and a low-pressure region in which an internal pressure is lower than that in the high-pressure region. The piston ring has a high-pressure-side ring disposed on a high-pressure-region side in the annular groove and a low-pressure-side ring provided on a low-pressure-region side in the annular groove with respect to the high-pressure-side ring. A cutout surface that retreats toward the high-pressure-region side is formed at an end edge on an outer peripheral side of a surface facing the low-pressure-region side in the low-pressure-side ring.SELECTED DRAWING: Figure 4

A control device includes a housing having a base portion and an extension portion. The base portion of the housing has an inward facing side and an outward facing side. The control device includes a lever coupled to and pivotable relative to the housing, and a master cylinder portion supported by the housing. The master cylinder portion has a hollow fluid cylinder. The control device also includes a piston assembly supported by the housing. The piston assembly is movable relative to the master cylinder portion. At least part of the piston assembly is disposed within the master cylinder portion. The master cylinder portion is angled relative to the outward facing side of the base portion of the housing, such that the first end of the fluid cylinder is closer to the outward facing side than the second end of the fluid cylinder is relative to the outward facing side.

A method for laser treating a substrate of a piston seal ring (PSR) (20) for a gas turbine engine includes: deforming the substrate to place a portion (310) of a first surface (30) of the substrate in tensile stress; and while holding the substrate deformed, laser treating the portion (310). After the laser treating but before release of the deformation, the first surface (30) may remain in tensile stress. Release of the deformation then at least partially cancels the tensile stress.

The invention relates to the field of fluid control devices in semiconductor liquid paths, and provides a precise control on-off valve for a semiconductor liquid path and an assembling method thereof, and the precise control on-off valve comprises a valve seat, a cylinder assembly combined on the valve seat, a diaphragm valve plate accommodated in the valve seat, and an adjusting wheel arranged on an upper cover of the cylinder. The air cylinder assembly comprises an air cylinder upper cover and an air cylinder body which are connected through a rotary lock catch structure, and a piston assembly and a limiting rod set are assembled in the air cylinder assembly. And the diaphragm valve plate is driven by the cylinder assembly to seal or separate from the valve port of the valve seat. The adjusting wheel is connected with the limiting rod set and used for adjusting lifting of the limiting lead screw, and then the maximum upward moving position of the piston assembly and the opening degree of the valve are precisely limited. The valve breaks through the bottleneck that a traditional mechanical valve is prone to abrasion and leakage, achieves the effect of precise fine adjustment of flow, and meanwhile greatly improves the flow stability of long-term operation and the clean safety of an ultra-pure fluid system.

A sliding arrangement for use in an internal combustion engine is described, comprising a cylinder liner (1) and at least one piston ring (10), wherein the liner (1) has a through-bore defining an inner surface (S) which in turn defines three sections: a first section (2) near the end of the piston stroke, facing the cylinder head (at top dead center, TDC); a second, middle section (3); and a third section (4) near the end of the piston stroke, facing the crankshaft of the engine (at top dead center, TDC), wherein (i) the TDC section (2) of the liner (1) has a surface finish with a first roughness value defined by a structure of recesses and projections (“valleys” and “raised areas”); the middle section (3) of the liner (1) has a surface finish with a second roughness value defined by a structure of recesses and projections (“valleys” and “raised areas”);(1) the BDC section (4) of the cylinder liner (1) has a surface finish with a third roughness value defined by a structure of recesses and projections (“valleys” and “raised areas”), and the roughness value of the middle section (3) is significantly lower than the roughness value of the TDC section (2), and is defined by an essentially very smooth structure of recesses and projections (“valleys” and “raised areas”); and (ii) a ceramic coating (R) is applied to at least part of the contact surface of the piston ring (10) by the physical vapor deposition (PVD) process.

The present invention relates to a primary gasket (1) for a cylinder assembly (100), wherein said cylinder assembly (100) comprises a cylinder (101) and a float (102) slidingly housed in a float housing (104) delimited by a cylinder wall (103) of said cylinder (101) for pressurizing a fluid, wherein said primary gasket (1) comprises an annular body (2) configured to be accommodated in a primary gasket housing (105) defined in said cylinder wall (103), wherein the primary gasket housing (105) is delimited radially by an axial housing wall (107) and axially by a first radial housing wall (108) and a second radial housing wall (109) connected as an undercut to said axial housing wall (107), wherein said annular body (2) comprises an inner lip (4), a central lip (5), an outer lip (6), and a back portion (3), wherein the back portion (3) comprises a back abutment surface (13) configured to abut against the first radial housing wall (108) of said primary gasket housing (105), wherein the inner lip (4), the central lip (5), and the outer lip (6) extend from the back portion (3) in the axial direction (X-X) spaced apart from one another in the radial direction (R-R) from the opposite side of the back abutment surface (13), wherein the inner lip (4) is configured to form a dynamic and static seal on the float (102), wherein the outer lip (6) is configured to form a seal with said axial housing wall (107), wherein the central lip (5) comprises an annular root (14), which extends axially between said back portion (3) and a root edge (15), wherein the central lip (5) comprises a plurality of protuberances (10, 9), wherein each protuberance (10, 9) projects axially from said root edge (15), wherein said plurality of protuberances (10, 9) and said root edge (15) define a plurality of discharges (8), wherein each discharge (8) is delimited by each protuberance (10) and a first neighboring protuberance (9) thereof of said plurality of protuberances (10, 9) and by a free edge portion of said root edge (15), which extends between each protuberance (10) and the first neighboring protuberance (9) thereof, wherein each protuberance (10, 9) extends circumferentially by one protuberance extension (G), wherein each discharge (8) extends circumferentially by one discharge extension (L), wherein a sum of each discharge extension (L) is greater than a sum of each protuberance extension (G).

A thermal ablation-resistant, wear-resistant, and friction-reducing coated piston ring, a preparation method thereof and an engine are provided. An outer circumferential surface of a piston ring material matrix includes, from bottom to top, a wear-resistant and friction-reducing layer and a protective layer, and the protective layer is a single nitride layer or a multi-element nitride layer. The piston ring is arranged with the wear-resistant and friction-reducing layer and the protective layer from bottom to top. When the piston ring is installed in the engine, the high-temperature and high-pressure gas flow impacts the piston ring and contacts the protective layer on the surface of the piston ring, while the inner diamond-like carbon coating (DLC) functional layer is completely “encapsulated” and protected by the outer protective layer. The protective layer possesses higher ablation resistance compared to the DLC layer, effectively preventing phase transformation in the internal DLC layer.

The utility model relates to the technical field of circular ring gaskets, in particular to a combined circular ring gasket easy to install, which adopts the technical scheme that the combined circular ring gasket easy to install comprises a left circular ring gasket and a right circular ring gasket, and the outer wall of the left circular ring gasket and the inner wall of the right circular ring gasket are provided with a combination device which is convenient for installing the circular ring gasket on equipment. The circular ring gasket has the beneficial effects that the circular ring gasket is provided with a first connecting groove, a second connecting groove, a first connecting block, a first magnet, a second connecting block, a limiting groove, a spring, a bevel edge block, a second magnet and a groove; a first magnet on a first connecting block and a second magnet on a right circular ring gasket are attracted, the circular ring gaskets are combined in a more labor-saving mode, a bevel edge block is moved out of a limiting groove in a second connecting block and enters a groove, and the left circular ring gasket and the right circular ring gasket are fixed; and the condition that the ring gasket is mounted after the element on the shaft is taken out is avoided.

The application relates to the technical field of compressors and discloses a gas piston assembly for an ultrahigh-pressure liquid-drive piston compressor, which comprises a gas piston body, a sealing element and a connecting element; the gas piston body comprises oppositely arranged first and second body parts, a cylindrical protruding part is arranged at the center of the end face of one side of the first body part, and the second body part is provided with a positioning insertion hole matched with the cylindrical protruding part at the center of the end face opposite to one side of the first body part; the sealing element comprises a plurality of first piston rings and a plurality of second piston rings, the plurality of first piston rings and the plurality of second piston rings are all sleeved on the cylindrical protruding part and are alternately arranged, and the first piston rings are arranged close to the end face of the first body part; the connecting element is used for connecting the first body part and the second body part together after the cylindrical protruding part is inserted into the positioning insertion hole; the combined piston ring is used for replacing the traditional pan piston structure for sealing, and can solve the sealing problem caused by the extremely high pressure and temperature under the ultrahigh-pressure working condition.

The application relates to the technical field of compressors, and discloses a piston-type hydrogen compressor assembly and a hydrogen compressor thereof, which comprises a piston ring, three limiting grooves are arranged in the side wall of a piston body, the piston ring is movably connected in the limiting groove of the piston body, an opening is arranged in the piston ring, the piston ring comprises a flow resistance ring and a sealing ring, the cross section of the flow resistance ring is a T-shaped structure with a rotation angle of 90 degrees, the flow resistance ring is fixedly connected to the inner ring wall surface of the sealing ring, and the outer ring wall surface of the sealing ring is in contact with the inner wall of a cylinder sleeve. The flow resistance ring shares the stress borne by the sealing ring and restricts the deformation space of the sealing ring, so that the deformation of the sealing ring in the radial direction under high temperature and high pressure is effectively prevented, the anti-creep property of the sealing ring is improved, the gap size between the sealing ring and the cylinder sleeve is always in a safe range, the sealing property between the sealing ring and the cylinder sleeve is improved, the compression efficiency of the piston body on hydrogen is ensured, and the service life of the piston ring is prolonged.

[Object] To reduce the amount of wear of a lip ring containing PTFE as a main component.[Solving Means] A sliding mechanism for a locking piston type oil-free reciprocating compressor includes: a cylinder; and a lip ring. The cylinder includes a metal cylinder body having a cylindrical inner peripheral surface extending in an axial direction and a coating film provided on the inner peripheral surface. The lip ring is attached to a piston reciprocating along the axial direction while swinging in the cylinder and slides with respect to the coating film during the reciprocation of the piston. The lip ring contains PTFE as a main component. The coating film contains PTFE and a binder resin as main components, and a mass ratio of the PTFE to the binder resin is 0.4 or more and 2.0 or less.

A syringe system, piston seal systems, stopper systems, and methods for assembling and using the syringe systems. The piston seal system including a piston seal member and a piston head member. The injection system including a container, a piston seal system positioned within the container, and a stopper system coupled to an end of the container. The method of assembling an injection system, the method includes obtaining a container, a piston seal system, and a stopper system. The method also includes inserting the piston seal system into a cavity within the container. The method further includes securing the stopper system at an end of the container in an opening of the cavity. Methods of using the syringe system, piston seal systems, and stopper systems are also disclosed.

To provide a piston for an internal combustion engine and a manufacturing method thereof, capable of improving seizure resistance of a skirt face and simultaneously reducing friction.SOLUTION: A thrust side skirt portion 18A extending toward a bottom of a cylinder bore on an outer peripheral portion of a piston 10 and an anti-thrust side skirt portion 18B of a position opposed thereto are composed of an aluminum alloy as a base material 40. In forming silicon dispersion layers 43 by applying a pulse laser beam to outer surfaces of two skirt portions, a silicon average particle size of a first silicon dispersion layer 43A formed on the thrust side skirt portion 18A is determined to be smaller than a silicon average particle size of a second silicon dispersion layer 43B formed on the anti-thrust side skirt portion 18B.SELECTED DRAWING: Figure 5

The utility model relates to the technical field of engine pistons, in particular to an engine piston which comprises a piston body, the piston body comprises a top, a head and a skirt, the top, a cylinder cover and a cylinder wall jointly form a combustion chamber, and a first piston groove, a second piston groove and a third piston groove are formed in the periphery of the head. The skirt part is provided with a connecting hole for connecting a piston bolt; piston ring check blocks are arranged in the first piston groove, the second piston groove and the third piston groove and arranged in a staggered mode. A first gas ring, a second gas ring and a combined ring are respectively clamped on the first piston groove, the second piston groove and the third piston groove; the combined ring comprises a detachable ring body, an upper scraping piece, a lower scraping piece and a lining spring, wherein the upper scraping piece and the lower scraping piece are arranged on the upper side and the lower side of the ring body respectively, and the lining spring is arranged in the ring body and used for providing axial elastic force. The problem that a piston ring in a traditional engine piston is troublesome to mount and dismount is solved.

The invention discloses a preparation method of a piston of a large-cylinder-diameter air-cooled diesel engine. The preparation method specifically comprises the following steps: S1, modeling and zoning; s2, gradient printing; s3, adding a coating; the invention relates to the technical field of diesel engine pistons. According to the preparation method of the large-cylinder-diameter air-cooled diesel engine piston, collaborative optimization of the overall performance of the piston is achieved through gradient printing of the piston, light weight of the piston is achieved in cooperation with a honeycomb lattice structure, the abrasion loss is reduced through silicon carbide, the abrasion resistance of a top area is improved, a zirconium trialuminum nano precipitated phase is formed through zirconium, grains are refined, and the piston is obtained. Scandium, zirconium and aluminum are used for forming a composite precipitated phase, the high-temperature strength is improved, an efficient heat conduction network is constructed through graphene nanosheets, the heat conductivity of a middle area is improved, a three-dimensional network is constructed through carbon nanotubes, the toughness of a skirt area is improved, and by spraying a wear-resistant and corrosion-resistant coating on the surface of the piston, high interface bonding strength is achieved, friction force is reduced, and the service life of the piston is prolonged. The service life of the piston is prolonged and the maintenance cost is effectively reduced.

The utility model discloses a gasoline engine cylinder body piston wear-resisting structure which comprises a cylinder body, the cylinder body is provided with a piston rod, the surface of the cylinder body is fixedly connected with two installation frames, the two installation frames are distributed oppositely in the left-right direction, and the upper end and the lower end of the right surface of the installation frame located on the right side are fixedly connected with telescopic rods. A universal joint is fixedly connected between the right end of the telescopic rod and the right end of the piston rod, a protective sleeve is fixedly connected to the penetrating position of the piston rod on the right surface of the machine cylinder body, two grooves are formed in the inner wall of the protective sleeve, the two grooves are oppositely distributed left and right, the protective sleeve is divided into a sealing area and an impurity collecting area through the two grooves, and the sealing area is located in the machine cylinder body. A sponge gasket is arranged on the surface of the piston rod, and the left end and the right end of the sponge gasket make contact with the protective sleeve and the universal joint. Through the device, the stability of the cylinder piston is improved, and the influence of impurities and collision on the piston is reduced.

The invention relates to a piston ring. A piston ring (100) for a piston of a reciprocating internal combustion engine comprises a ring section (1) and a lock section (2). The lock segment (2) comprises a circumferential parting line (7) at a first axial parting line distance (PaT) from the top surface (T) of the piston ring (100) and at a second axial parting line distance (PaB) from the bottom surface (B) of the piston ring (100). Furthermore, the piston ring (100) comprises an arcuate profile (10) having a circumferential pivot line (8) at a first axial pivot line distance (PiT) from the top surface (T) and at a second axial pivot line distance (PiB) from the bottom surface. The axial distance (9) between the circumferential parting line and the pivot line is less than 20% of the axial width of the piston ring. The arcuate profile (10) may include a most protruding, axially extending flat section (14). The flat section (14) comprises a circumferential parting line (7).

A split ring seal has: a first circumferential end and a second circumferential end; an inner diameter surface and an outer diameter surface; a first axial end face and a second axial end face. The outer diameter surface has a sealing surface. The first axial end face has: a first section; a second section outboard of the first section; and an axial protrusion between the first section and the second section The second axial end face has: a first sealing surface; a second sealing surface radially outboard of the first sealing surface; a circumferential channel between the first surface and the second sealing surface; and a plurality of channels extending radially outward from the circumferential channel.

The utility model discloses a kind of elastic rubber sealing rings, it relates to sealing ring technical field, including annular rubber ring and annular spring sheet, the cross section of the spring sheet is the "bow" character type of continuous smooth radian, the center protrusion side of spring sheet is towards inside, the inner ring center position of the rubber ring is equipped with a circle opening slot, the bottom of the opening slot corresponds with the center recessed position of spring sheet, the rubber ring inside is equipped with the profiling groove corresponding with the upper portion and lower portion of spring sheet;The utility model will continuous smooth radian, the "bow" character section, annular spring sheet is loaded into the profiling groove and opening slot of rubber ring, spring sheet can be compressed or lengthened in axial and radial direction, so that rubber ring can be made axial seal, also can be made radial seal, applicability is wide, and profiling groove wraps spring sheet area is large, and installation is stable.

The internal combustion engine piston capable of reducing abrasion comprises a piston body and a piston head, the piston body and the piston head are fixed, a piston ring groove is formed in the outer wall of the circumference of the piston head, a sealing ring is fixedly connected in the piston ring groove, a plurality of reinforcing rings are fixed in the piston head, the piston body comprises a high-temperature-resistant filling layer, and the high-temperature-resistant filling layer is arranged in the piston ring groove. A high-temperature-resistant filling layer is fixedly connected to the outer side of the plug body, a wear-resistant layer is fixedly connected to the outer side of the high-temperature-resistant filling layer, the high-temperature-resistant filling layer is made of aluminum alloy or nickel alloy, the wear-resistant layer is a dlc coating or a high-silicon aluminum alloy coating, and an assembly hole is formed in the bottom of the plug body. According to the wear-resistant piston, the high-temperature-resistant filling layer and the wear-resistant layer are matched for use, so that the piston body is more wear-resistant and high-temperature-resistant, the service life of the piston is prolonged, meanwhile, the piston and an external device can be connected more tightly through the sealing ring, and the piston head can be firmer and more durable through the reinforcing ring.

To provide a piston ring for providing sufficient sealing and long life durability of the piston ring and a cylinder liner.SOLUTION: A piston ring 100 for a piston of a reciprocating internal combustion engine includes a ring part 1 and a locking part 2. The lock 2 comprises a circumferential parting line at a first axial parting line distance from the top side T of the piston ring 100 and at a second axial parting line distance from the bottom side B of the piston ring 100. Further, the piston ring 100 comprises a cambered contour, wherein the cambered contour comprises a circumferential pivot line having a first axial pivot line distance from a top surface T of the piston ring 100 and having a second axial pivot line distance from a bottom surface. According to the invention, the axial distance between the circumferential separation line and the pivot line is less than 20%, preferably less than 10%, of the axial width of the piston ring.SELECTED DRAWING: Figure 1

The invention discloses an environment-friendly closed sealing ring and a preparation method thereof, and belongs to the field of mechanical sealing elements, and the environment-friendly closed sealing ring comprises the following substances in parts by weight: 72 parts of bio-based high polymer material particles, 8 parts of microcapsule powder, 15 parts of a plasticizer and 5 parts of a reinforcing agent. The method has the advantages that 1, the excellent environmental protection property is realized: greenization is realized from the source, a renewable bio-based material is adopted, the dependence on fossil resources is reduced, after the service life of a product is ended, the bio-based matrix and the microcapsule wall material can be biodegraded under specific conditions such as industrial composting, or the material recovery is realized in a melting reconstruction manner, and the environment-friendly property is realized; the full-life-cycle environment friendliness is really realized; the service life is ultra-long, intelligent supply is achieved through a closed self-lubricating core, the problems that a traditional lubricating agent is prone to loss and needs to be supplemented frequently are solved, the abrasion speed of a sealing ring is greatly reduced through continuous and effective lubrication, and the service life of the sealing ring can be prolonged by 2-3 times compared with that of a traditional product.

The present invention relates to an oil scraper ring (4) comprising a ring element (6), the ring element (6) having an upper ring edge (8), a lower ring edge, an inner ring surface, and an outer ring surface (14), the ring element (6) being provided with two opposing contact surfaces (20) with a ring gap (18) between the two contact surfaces (20), the outer ring surface (14) of the ring element (6) being provided with at least one scraper bar (24, 26), the oil scraper ring (4) being provided with two recesses (28), one recess (28) arranged on each contact surface (20), each of the two recesses (28) being adjacent to at least the outer ring surface (14), each contact surface (20), and the upper ring edge (8).