208results about How to "Improve sealing function" patented technology

A sealing device (4) is provided for sealing between a first member (1) and a second member (2) and comprises a first sealing element (10), provided on the first member and extending thereabout towards the second member, and a second sealing element (20), provided on the second member and extending towards the first member without direct contact with the first sealing element (10). The first sealing element (10) comprises a first flange member (12) extending towards the first member (1) forming a first chamber (13) and the second sealing element (20) comprises a second flange member (22) extending towards the second member (2) and forming a second chamber (23). The flange members (12, 22) are provided overlapping each other in such a manner that the first flange member (12) extends in the second chamber (23) and the second flange member (22) extends in the first chamber (13).

A seal assembly capable of low temperature service is disclosed. It features upper and lower metallic backup rings that are specially shaped to act as a spring to keep the sidewalls of such rings in contact with the inside and outside surfaces to be sealed to prevent extrusion of the seal material even in low temperature situations. Inner and outer grooves are provided. O-ring seals, used for the ID of the seal, are manufactured to have a slightly greater diameter than the groove into which they will be installed. The greater length provides stored energy to promote sealing functionality in cold temperature situations. The O-rings used for the OD of the seal are manufactured to have a slightly smaller diameter than the groove into which they will be installed. The shorter length provides stored energy to promote sealing functionality in cold temperature situations.

In an exhaust control valve having a valve housing and a valve body rotatably contained in the valve housing, a transmission member is fitted to an outer end of the valve shaft and protrudes from the outside of the valve housing. A bearing bushing for rotatably bearing an external circumferential surface of the valve shaft by its internal circumferential surface and rotatably bearing an end face of the valve body by its end face is mounted in the valve housing. The valve body is urged by load from a thrust spring for achieving a pressure contact seal condition between the opposed end faces of the bearing bush and the valve body.

In an exhaust control valve having a valve housing and a valve body rotatably contained in the valve housing, a transmission member is fitted to an outer end of the valve shaft and protrudes from the outside of the valve housing. A bearing bushing for rotatably bearing an external circumferential surface of the valve shaft by its internal circumferential surface and rotatably bearing an end face of the valve body by its end face is mounted in the valve housing. The valve body is urged by load from a thrust spring for achieving a pressure contact seal condition between the opposed end faces of the bearing bush and the valve body.

A film solar cell comprises top and bottom transparent baseboards. It is prepared by arranging conduction electrode and catalyst layer in interval on one transparent conduction film of substrate as well as arranging conduction electrode and nanomutihole semiconductor material block in interval on another one, soaking dyestuff in said nanomaterial, overlapping two transparent baseboards and sealing periphery of them to form cavity with electrolyte. The internal parallel electrode is also prepared for obtaining output current of solar cell.

The invention relates to a closed energy-saving and environment-friendly tank truck cleaning device which comprises a tank truck and an air bag type closing cover plate, wherein the air bag type closing cover plate is connected with a nitrogen input pipe, a cooking steam input pipe, an exhaust fan and a drying fan respectively, and is also connected with an alkali liquid washing basin, a detergent washing basin, a chemical agent washing basin, a high-pressure water washing basin, a low-pressure water washing basin, a water washing basin and a heat exchanger respectively; the heat exchanger is connected with a steam washing pipeline and an industrial water supplementation pipeline respectively; the air bag type closing cover plate is connected with a residual liquid basin, an oil-water separator, a wastewater sedimentation treatment basin, a residual acid basin and a lime reaction sedimentation basin in sequence; the wastewater sedimentation treatment basin is connected with the alkali liquid washing basin, the detergent washing basin, the chemical agent washing basin, the high-pressure water washing basin, the low-pressure water washing basin and the water washing basin respectively; and an industrial air stirring device is connected with the alkali liquid washing basin and the chemical agent washing basin. Meanwhile, the invention further discloses a cleaning method for the device. The closed energy-saving and environment-friendly tank truck cleaning device and the cleaning method thereof are safe and convenient to use, and good in cleaning effect.

A system for providing a sealed transit for a situation wherein one or a plurality of cables, pipes or ducts (2) extend through the transit, wherein the system comprises a frame (100) which is sealingly fixed or fixable into or onto an opening, wherein the frame (100) comprises one or a plurality of conduits (203) which are each suitable for receiving at least one of the plurality of cables, pipes or ducts (2) and for receiving an elastically deformable plug (4) for sealingly filling space between an inner circumferential wall of the conduits (203) and the at least one of the plurality of cables, pipes or ducts (2), wherein the system further comprises at least one blocking element (37) for hindering in each conduit (203) movement of one end of a plug (4) which is inserted in that conduit (203).

An in-ear headphone (1) comprising an elastic sealing part (2) and a solid sealing part (3) for sealing an ear cavity (b) against an outside region (c) is disclosed, wherein said solid sealing part (3) comprises at least one damping vent (4) interconnecting the ear cavity (b) and the outside region (c), and wherein said damping vent (4) forms an acoustic friction.

In an airbag for a motor vehicle, with a flow passage via which two pressure chambers are connected to one another, a flow medium, in particular gas, flows from one pressure chamber through the flow passage into the other pressure chamber in a passage direction. To increase the suitability of the airbag for, for example, side impact loads, the flow passage includes a backflow safeguard that allows the flow medium to flow in the passage direction, whereas the flow of the flow medium in a blocking direction opposite to the passage direction is largely prevented.

A mechanical non-contact gas seal including a rotary scaling ring and a stationary sealing ring that is engaged and held in an inner periphery of a seal case by means of O-rings so as to move in an axial direction thereof. The O-rings engage with the outer periphery of the stationary sealing ring and come in press contact with the inner periphery of the seal case to seal a gap between the stationary sealing ring and the seal case while allowing the stationary sealing ring to move in an axial direction. A resin coating of a thickness in the range of 5 to 100 μm is formed on the inner periphery of the seal case at least within a range in which the O-rings relatively move with the movement of the stationary sealing ring.

A connecting device for a plug-in connection of at least one pipeline having a housing part having at least one receiving opening for the insertion of the pipeline. A clamping ring is arranged in the receiving opening and, in order to lock the pipeline in place, interacts with an inner one of the housing part. The housing part is made in two parts including a base part and an insert part, which is connected to the base part via a snap-in action forming-fitting connection. The insert part has a direct seal for resting on the circumference of the inserted pipeline. The insert part is formed of a first relatively hard and dimensionally stable plastic material, and has a dirt seal consists of a second, relatively soft and elastic plastic material and is molded directly into the first material as a single piece with a cohesive material joint therebetween.

A film solar cell comprises top and bottom transparent baseboards. It is prepared by sealing baseboard periphery to form cavity with electrolyte, arranging transparent conduction film in interval on substrate, making conduction film on one substrate have catalyst layer and conduction film on another one have nanomultihole semiconductor material block, soaking dyestuff in said nanomaterial and connecting two staggered transparent conduction films by series electrodes. The internal series electrode is also prepared for obtaining output current of solar cell.

A foam spray head assembly includes a press head connected to a cap, a netted tube, a valve member, a main tube, a piston unit, a link unit, a resilient member, a cylinder unit and a valve. The netted tube is connected to the valve member. An outlet is defined between the first link of the link unit and the first tube. An inlet is defined between the second link of the link unit and the protrusion of the piston unit. The resilient member is mounted to the second tube and contacts the flange of the second tube. The first piston of the cylinder unit is movable in the first cylinder to form a sealed second chamber. The second piston of the cylinder unit is movable in the second cylinder to form a sealed third chamber. The valve is located in the passage of the second cylinder.

The invention discloses a lubricant circulating device based on a sliding bearing, as well as a manufacturing process of the lubricant circulating device. The lubricant circulating device essentially consists of a bearing bracket, a guide base and an oil tank; an oil transportation duct which is connected to a port of a cold oil inputting pipe penetrates a duct mounting hole of the oil tank and is connected to a thread hole of the guide base, and is communicated with a cold oil storing cavity; a hot oil outputting pipe is connected to the oil tank and is communicated with an oil returning hole, thereby forming a system-cold oil-hot oil / cold oil-lubricant circulating-inputting / outputting loop; meanwhile, under the synchronous control of various corresponding equipment, the scheme of arranging the lubricant circulating inputting / outputting loop system is implemented. Through the lubricant circulating device, the sliding bearing which is matched with the motor, the water pump and other host equipment is not only compactly structured but is adaptive to the high-speed operation of the host equipment, and the sliding bearing cannot change the connecting and mounting size of the original machine and can ensure the circulation of the lubricant; the bearing bush can not generate heat; the equipment system is stable, reliable and safe in operation; the lubricant circulating device is suitable to be used as a supporting product of various power equipment, especially for as a supporting product of various heavy-load engineering machineries.

The invention discloses environment-friendly polyurethane two-component corner-crimping glue. The corner-crimping glue consists of a component I and a component II, wherein a weight ratio of the component I to the component II is 10:1 to 1:10, the component I comprises the following components: 41-52 percent of polyhydric alcohol A, 30-40 percent of filler A, 8-15 percent of filler B, 6-12 percent of modifier, 0.05-0.1 percent of catalyst, 1-2 percent of surfactant A, 2-5 percent of plasticizer A and 5-10 percent of plasticizer B; and the component II comprises the following components: 50-60 percent of isocyanate, 15-25 percent of MDI prepolymer, 10-16 percent of filler C, 2-6 percent of polyhydric alcohol B, 1-2 percent of surfactant B and 10-15 percent of plasticizer C. The comprehensive strength of the corner-crimping glue is greatly superior to that of polyurethane single-component corner-crimping glue, and the corner-crimping glue is high in stability and high in curing speed; and the corner-crimping glue has excellent joint filling capacity and is suitable for corner-crimping insertion of aluminum alloy doors and windows and curtain walls and overall corner cementing adhesion-sealing.

There is provided a metal gasket that is less susceptible to lift and thrust phenomenon of housings and can effectively function as a sealing at a blowhole. The metal gasket includes an embossment portion provided with a pair of outer inclined portions and a pair of inner inclined portions. The metal gasket and satisfies the following relationships: Mh2 / Mh1=1.10−1.81, W3>W1, and W3>W2, where Mh1 and Mh2 are vertical lengths, and W1, W2 and W3 are horizontal lengths. When the gasket is sandwiched in between two housings, tip ends abut on the housing to form two seal lines, and root ends, and another tip end abut on the housing H2 to form three seal lines.

A method for manufacturing a watertight zipper includes forming a waterproof tape by extruding a polymeric material in a melted state wrapping around a cloth tape, cutting a side of the waterproof tape that is covered by the thick waterproof layer to form a side surface of the thick waterproof layer as an abutting surface, forming a plurality of apertures in the waterproof tape that extends through the cloth tape and the thick waterproof layer, and forming a plurality of scoops spaced from the thin waterproof layer and corresponding to the apertures. The waterproof tape includes a thick waterproof layer and a thin waterproof layer both formed by the polymeric material. The thick waterproof layer covers an upper surface, a lower surface and an edge of the cloth tape. The thin waterproof layer connects with the thick waterproof layer. An end of each scoop extends beyond the abutting surface.

A fuel injector for fuel injection systems of internal combustion engines includes a valve-seat member (5), in which a valve-seat surface (6) is introduced, which cooperates with a valve-closure member (4), mechanically linked to a valve needle (3), to form a sealing seat, and at least one spray-discharge orifice (7); in the idle state of the fuel injector (1) a gap (31), whose length (1) is smaller than the opening lift of the fuel injector (1), is situated between a downstream part of valve needle (3) and a recess (33) introduced in valve-seat member (5) on its upstream side.

The invention discloses a water stop section for the crossing floor layer installation of a building drainage pipeline and an installation method of the water stop section. The water stop section includes a water stop section body, a flange gland, a sealing ring sleeve, a sealing rubber pad, a sealing rubber ring and a fastening bolt, the water stop section body and the flange gland are assembledin a fastened mode by the fastening bolt, the inner cavity of the water stop section body is connected with the sealing ring sleeve by the sealing rubber ring in a sealed mode, and the sealing ring sleeve and the flange gland are connected in a sealed mode through the sealing rubber pad inside of the sealing ring sleeve. The risk that water leakage is prone to occurring at openings in the two endsof an embedded connecting pipe or a center-adjustable embedded connecting pipe structure is avoided, a bolt connection fastening method of a T-shaped groove formed in the water stop section body witha cross groove of a flange pressure plate long bolt hole is adopted, when the position of the water stop section poured on a reinforced concrete floor is deviated, the installation position of the pipeline can be conveniently adjusted in any horizontal direction by displacing adjustment to ensure the verticality of the vertical pipe installation, the product structure is simplified, the manufacturing cost is reduced, and the efficiency of installation and construction are improved.

The invention relates to aluminum bar casting forming equipment and a processing technology thereof. The equipment comprises a fixed frame, wherein a plurality of adjacent die plate units are mountedabove the fixed frame, a plurality of distributed crystal heads are arranged below each die plate unit, molten aluminum introduced by the die plate units is injected into the crystal heads, a ventilating valve is arranged next to each crystal head, a dummy bar head lifting platform is mounted at the bottom of the fixed frame, a plurality of dummy bar heads are mounted on the dummy bar head liftingplatform, each dummy bar head corresponds to each crystal head one by one, a lifting oil cylinder is arranged at the bottom of the dummy bar head lifting platform, and when the dummy bar head liftingplatform ascends, each dummy bar head stretches into each crystal head. In the crystallizing process, a cooling measure is applied, and the dummy bar head lifting platform is controlled to descend slowly to form an aluminum bar. A control box is mounted on the fixed frame and the die plate units, so that the aluminum bar casting forming equipment is high in work efficiency and good in forming effect.

The invention relates to the technical field of valves, discloses a butterfly valve, and particularly provides a sanitary butterfly valve. The sanitary butterfly valve comprises a flange connected to a pipeline. The flange is provided with connecting holes. A valve seat is arranged on the connecting holes. A valve element which is capable of rotating in the valve seat through hinge shafts and can be sealed with the valve seat is arranged in the valve seat. The section of the valve seat is in a circle shape. An annular boss is arranged on the inner face of the valve seat. A valve bush capable of being matched with the valve element is further arranged in the valve seat. The sanitary butterfly valve has the advantages that the annular boss is arranged on the inner face of the valve seat, the valve bush capable of being matched with the valve element is further arranged in the valve seat, and thus the better sealing function can be achieved; the overall structure is more compact through matching of the valve bush and the boss, and meanwhile mounting and dismounting are convenient; the effect that connection of first sealing bodies and second connecting end faces can still achieve the good sealing function after long-time use can be achieved; and meanwhile, the quality of water can be prevented from being affected under any condition through a material adopted by the valve bush.

A power transmitting system including: a first piston disposed within a center bore formed through the rotary shaft such that the first piston is axially reciprocable; a sleeve connected to the first piston and having internal teeth meshing with the external teeth of the rotary shaft so that the sleeve is rotated with the rotary shaft, and such that the sleeve is axially reciprocable together with the first piston according to axial movements of the first piston; a synchronizer ring supported in sliding contact with an outer circumferential tapered surface of the clutch gear such that the synchronizer ring is rotatable relative to the clutch gear; and an actuator including a second piston to axially advance the first piston for thereby bringing the sleeve's internal teeth into meshing engagement with the clutch gear through the synchronizer ring. The first piston and second piston are disposed coaxially with the rotary shaft.