81results about How to "Guaranteed sealing function" patented technology

Provided is a sliding component that achieves both of the conflicting conditions of sealing and lubrication, that prevents the concentration of a substance that causes sediment to occur on a sliding surface by actively taking a fluid into the sliding surface and discharging the fluid from the sliding surface, and that thereby prevents the occurrence of sediment and makes it possible to maintain the sealing function of the sliding surface over a long period of time. The sliding component is characterized in that: a fluid circulation groove (10) that is configured from an inlet section (10a) that leads in from a high-pressure fluid side, an outlet section (10b) that leads out to the high-pressure fluid side, and a connecting section (10c) that connects the inlet section and the outlet section is provided to the sliding surface of at least one of a pair of sliding components that slide relative to each other; the fluid circulation groove (10) is separated from a low-pressure fluid side by a land section (R); and a cross section of the bottom wall of the fluid circulation groove (10) is formed to have a round-bottomed shape.

A piston fuel pump (18) for an internal combustion engine has a pump cylinder (40) and a pump piston (28) received in the pump cylinder (40) so as to be movable. The invention proposes that the pump piston is guided in a radial direction by means of at least a first and at least a second guide section (51, 72), and that the first and the second guide sections are spaced apart from one another in an axial direction, the first guide section being arranged in a pump cylinder of the piston fuel pump and the second guide section being arranged radially outwards in the region of the end section (52) facing the drive (29). The invention further proposes that the piston fuel pump (18) has, at the first guide section (51), a bearing and sealing arrangement (46) for the pump piston (28), which comprises a guide region (48) for the radial guidance of the pump piston (28) in the pump cylinder (40) and a sealing region (50) having a sealing lip.

The invention discloses a full-metal soluble bridge plug. The full-metal soluble bridge plug comprises a seat sealing cylinder (1), an upper cone body (2) and a sealing cylinder (3), a lower cone body(4), a lower joint (5), a release rod (7), a conversion joint (8) and a seat sealing rod (9), the lower end of the seat sealing cylinder (1) is attached to the upper end surface of the upper cone body (2), the upper end of the seat sealing cylinder (1) is connected with an externally-arranged seat sealing tool, in the seat sealing barrel (1), the upper end of the conversion joint (8) is connectedwith the lower end of the seat sealing rod (9), the lower end of the conversion joint (8) is connected with the upper end of the releasing rod (7), the lower joint (5) is connected with the releasing rod (7) through threads, the lower joint (5) is connected with the lower cone body (4) through threads, one end of the lower cone body (4) is matched with one end of the sealing cylinder (3) throughthorn teeth, and the other end of the sealing cylinder (3) is matched with the upper cone body (2) through the thorn teeth. The full-metal soluble bridge plug has the characteristics of reliable anchoring, reliable pressure bearing, complete dissolution and the like.

The tool box (1) comprises two well-shaped, rectangular housing portions (7,8), which have a front side (9), a rear side (11), and two longitudinal sides (10). The longitudinal sides are formed longer than the rear side and the front side. The housing portions are pivotally coupled with each other in the area of the rear side swiveling around a swivel axis (12). A swiveling element (14) is provided, which is arranged between the housing portions on the swivel axis.

The invention discloses a seal ring, which comprises a ring body. A gap extending along the circumference direction is arranged on the inner side of the ring body, two circumferential sides of the gap form a large outer ring face and a small outer ring face respectively, and the radial width of the large outer ring face is larger than that of the small outer ring face. The seal ring has pressure sealing performance and active sealing performance. When abnormal situations occur in sealing connection and designed sealing conditions are not met to enable normal pressure sealing to be invalid, the seal ring can compensate, generate secondary sealing and enable a sealing structure to have large 'redundancy', thereby improving reliability. Even if other structural parts cannot exert design functions, a sealing function of an originally-designed rectangular ring body can be kept. The rectangular seal ring replaces an existing flange completely, and is reasonable in structure, convenient to use and low in cost, can be used for a novel seal flange and the existing flange, and can be used for sealing connection of a pressure gas pipeline except a flange connector.

The invention relates to a valve (1), which has at least one seal ring (7) arranged in a recess (3) of a valve housing (2), which seal ring has a seal housing (25) having a U-shaped cross-section, in which seal housing an annular sealing element (17) is arranged. The seal housing (25) has a multi-part design and contains at least one separate housing leg (28), which is fixed to an annular bottom section (27) of the seal housing (25) in a joining region (56). The sealing element (17) has a static sealing section (35), which engages in a sealing groove (64) formed in the bottom section (27) and is suitable for interacting with the two groove flanks (65) of the sealing groove (64) in a sealing manner.

The invention discloses a flange joint, which comprises two joint bodies, two flange bodies and a seal ring, wherein the end faces of the two joint bodies are opposite; a circular hole is arranged at the middle in the axial direction of each joint body; a boss is arranged in the direction of the outer circumference of the joint body; the bosses are near the respective end faces of the two joint bodies; a ring groove is arranged between the two joint bodies; a seal element is arranged in the ring groove; the end faces of the two flange bodies are opposite; the middles of the two flange bodies are respectively provided with a circular hole; annular locking grooves matched with the bosses are arranged in the circular holes; the bosses of the two joint bodies are locked in the locking grooves of the two flange bodies; the two flange bodies are fixed together through a connecting piece; the joint bodies are provided with a plurality of vent grooves for enabling the circular holes to be communicated with the ring groove; the cross section of the seal ring is in a stepped E shape; the seal ring comprises a ring body, a big outer ring surface and a small outer ring surface; the inner side of the ring body is provided with a gap extending along the circumferential direction; the big outer ring surface and the small outer ring surface are respectively formed at both sides in the circumferential direction of the gap; and the radial width of the big outer ring surface is greater than that of the small outer ring surface. In the flange joint disclosed by the invention, when the seal dual face of the joint deforms or a fastener looses to generate an abnormal seal, under the pressure of seal gas, extending deformation is generated on a seal layer to form a new seal at the position of a sealed gap, and thereby, an effect of automatic seal compensation is achieved.

The invention relates to a vehicle wheel which has a wheel disc, a wheel rim and at least one connecting element which connects the wheel disc to the wheel rim, wherein the connecting element is guided through a passage in the wheel rim and is joined in the wheel disc and a seal is provided for hermetically sealing the passage in the wheel rim, wherein one or more seals (10) is / are arranged between an attachment region of the wheel disc (2) and an attachment region of the wheel rim (1), wherein the seal(s) (10) surrounds / surround the connecting element(s) (4) in a contact-free manner.