47results about How to "Reduce sealing pressure" patented technology

A sealing device (1) capable of further increasing sealing performance by a labyrinth to effectively suppress the entry of dust such as slurry, comprising an inner peripheral side sealing member (2) fitted to an inner peripheral side mounting member as one of two members rotating relative to each other and an outer peripheral side sealing member (3) fitted to the outer peripheral side mounting member as the other. An outer peripheral tube part (4c) is formed on the outer peripheral portion of the metal ring (4) of the inner peripheral side sealing member (2), and a series of long labyrinth spaces (8), (9), and (10) are formed between the outer peripheral surface of the outer peripheral tube part (4c) and the outer peripheral side sealing member (3), between the tip face of the outer peripheral tube part (4c) and the outer peripheral side sealing member (3), and between the inner peripheral surface of the outer peripheral tube part (4c) and the outer peripheral side sealing member (3).

A tubular bag-making machine for forming a flexible tube from a hot-sealable web of packaging material sealed longitudinally by means of a longitudinal seam sealing device and transversely by means of a transverse seam sealing device to produce individual tubular bag packages. To improve the transverse sealing seams, bores which can be made to communicate in alternation with a negative-pressure source or an overpressure source are embodied in the sealing jaws of the transverse seam sealing device in regions having a reduced number of layers of packaging material to enable a good heat transfer and a higher sealing pressure in the region of changes in the number of layers of packaging material of the transverse sealing seams.

The invention discloses an immersion self-adaptive sealing control device used in a lithography machine. The immersion self-adaptive sealing control device is arranged between a projection lens set and a substrate, and consists of a sealing element and a self-adaptive sealing member. When liquid forms the impact on the self-adaptive sealing member due to traction of the substrate, the device can absorb the impact formed by the high-speed moving liquid and converts the impact into power enhancing sealing; on the contrary, when the substrate draws the liquid away from the self-adaptive sealing member, the liquid prestored inside the device follows to enter a slit flow field to avoid gas bubble entrainment owing to the loss of the liquid at the boundary, meanwhile, the reduction of the liquid prestored inside the device reduces the sealing power of the self-adaptive sealing member, and the leaked liquid flows back to the inside of the slit flow field along with the substrate due to the reduction of obstruction. The liquid transmission mode of the immersion self-adaptive sealing control device adopts negative pressure recovery and free flow of a fluid injection end, which avoids the flow field fluctuation caused by the in-coordination between the injected fluid and the recovery pressure.

Provided is a waterproof plug with which waterproofness can be improved. In the waterproof plug (1), a sealing section (3) is provided with an outer circumference section (30) that adheres closely to inner wall faces of cavities (41) existing within a connector housing (4), and an inner circumference section (33) through which a wire (5) to be pulled out from the cavity (41) is inserted, and which adheres closely to an outer circumference face of the wire (5). The sealing section (3) is formed on the inner side and outer side of a cylindrical resin member (2). A contacting section (21a) of the resin member (2) is made to come in contact with an inner wall face of an edge section (41a) of the connector housing (4), from which the wire (5) is to be pulled out from the cavities (41). A plurality of protruded claw sections (211), protruding towards the inner circumference section (33) side, are formed on the resin member (2) along the circumference direction thereof.

The invention discloses an anti-fatigue high-pressure hydrogen storage container for a hydrogen refueling station. The container adopts a non-welding double-layer cylinder structure, an inner container is a large-volume seamless gas cylinder, an outer container is a two-section combined large-volume seamless gas cylinder, the inner container is connected through a flange, and the inner container is supported in the outer container through a gasket and gas inlet/outlet pipes at two ends of the container. During use, the inner container is filled with high-pressure hydrogen, and the outer container is filled with high-pressure nitrogen serving as balance gas. The stress level of the inner container is adjusted by balancing the gas pressure, and the crack propagation driving force of the inner container is reduced. The inner container can be made of austenitic stainless steel with good hydrogen compatibility, and the outer container can be made of high-strength steel to bear the high-pressure nitrogen. According to the anti-fatigue high-pressure hydrogen storage container for the hydrogen refueling station, the problem of hydrogen embrittlement of a current single-layer hydrogen storage container material is effectively solved, and the defects that an existing multi-layer high-pressure hydrogen storage device is complex in manufacturing process, multiple and dense in weld joint, large in welding quality control difficulty, long in production period and high in cost are overcome.

The invention relates to the technical field of glue mixing devices, and provides a glue mixing accelerator. The glue mixing accelerator comprises two cavity bodies arranged side by side, namely a first cavity body and a second cavity body; the first cavity body and the second cavity body are internally provided with a first screw-type glue mixing bar and a second screw-type glue mixing bar respectively; one of the first screw-type glue mixing bar and the second screw-type glue mixing bar is directly driven to rotate by a driving device, and the other one is transmitted to rotate by a transmission device. An original passive glue mixing mode of the glue mixing accelerator is changed into an active glue mixing mode, and the static glue mixing is changed into the active glue mixing; glue with a component A and glue with a component B in the cavity bodies are rotated and stirred in an acceleration manner by driving the two screw-type glue mixing bars to rotate, and can be stirred uniformly, and the flowing velocity of the glue is increased; the glue discharge flow is increased, so that the glue sealing efficiency is improved.

A sensor system, for sensing at least one property of a measured gas in a measured-gas space, includes a probe for sensing the property of the measured gas. The probe has at least one sensor element and at least one housing surrounding the sensor element. The housing is configured so that the sensor element in the housing is capable of being impinged upon with the measured gas. The sensor system also includes a receiving element connectable to a wall of the measured-gas space. The probe is introducible along an insertion axis into the receiving element and securable in the receiving element. The probe is capable of being sealed off from the measured-gas space by at least one seal. The seal encompasses at least one linear seal.

The invention discloses a ball mill packing and sealing device. The ball mill packing and sealing device comprises a machine box, a packing device is installed at the position, close to the upper portion, of the interior of the machine box, and the packing device comprises a feeding hopper and a feeding barrel. The feeding hopper is located at the opening position of the machine box, and the section of the feeding hopper is in a trapezoidal shape. The feeding barrel is a cylindrical barrel and embedded in the discharging opening position of the bottom of the feeding hopper in a sleeving mode.The interior of the machine box is further provided with a sealing device. The sealing device comprises a sealing seat. The sealing seat is connected with the outer surface of the feeding barrel in asleeving mode. A magnetic sealing assembly is connected with the tail end of a through hole of the sealing seat in a sleeving mode. The magnetic sealing assembly faces the tail end of the feeding barrel directly and is used for achieving bottom sealing of the feeding barrel. A circular-annular O-shaped ring is arranged at the connection of the magnetic sealing assembly and the sealing seat in a padded mode. A blowing-removing device is further installed on the lower portion of the interior of the machine box. The blowing-removing device is installed on the right side edge of an outlet of the feeding barrel. The ball mill packing and sealing device is good in sealing performance and is not prone to being worn, dust can also be effectively prevented from entering, the service life is prolonged, and the maintenance cost of equipment is reduced.

The invention provides a valve rod sealing structure and a ball valve. The valve rod sealing structure comprises a lubricating bearing, an elastic sealing piece, an abutting piece and a fixing piece. The lubricating bearing is used for reducing rotating friction force. The elastic sealing piece is arranged on a valve rod in a sleeving mode with an inverted-U-shaped opening facing outwards under the action of the fixing piece and the abutting piece. The two side walls of the elastic sealing piece are in close contact with the outer wall of the valve rod and the inner wall of a supporting structure correspondingly. After external fluid enters the position from a gap between the valve rod and the supporting structure, the pressure of the fluid presses the middle of the elastic sealing piece, the two side walls of the elastic sealing piece are extruded to be in close contact with the outer wall of the valve rod and the inner wall of the supporting structure correspondingly, and thus the sealing effect is achieved. According to the valve rod sealing structure, most of medium particles can be prevented from entering the position between the valve rod and the supporting structure, thus the valve rod does not rub with the medium particles when rotating, and abrasion is small.

The invention provides a criss-crossed roller bearing with a novel sealing structure. The sealing pressure of a framework oil seal is reduced, the oil leakage rate of the bearing is reduced, and criss-crossed rollers are ensured to be lubricated sufficiently. The criss-crossed roller bearing with the novel sealing structure comprises a bearing inner ring and a bearing outer ring, wherein roller installation ring slots are formed in the corresponding thickness positions between an outer ring surface of the bearing inner ring and an inner ring surface of the bearing outer ring; the correspondingrollers are arranged in corresponding roller slots of the roller installation ring slots through a criss-crossed form; a framework oil seal installation seam allowance is arranged at the outer end ofan outer-end connecting ring slot gap in the thickness direction after the bearing inner ring and the bearing outer ring are assembled; a framework oil seal is arranged on the framework oil seal installation seam allowance and blocks lubricating oil at the corresponding end surface; a sealing element blocks the tail end of an inner-end connecting ring slot gap in the thickness direction of the bearing inner ring and the bearing outer ring, and concretely comprises a connecting ring, a transition flanging ring and an outer convex seal ring; and the first end surface of the connecting ring andthe inner end surface of the bearing inner ring are fixedly arranged in a fitting way.

The invention discloses an anticorrosion structure of a return outlet of the trumpet tube. A parallel guide tube, an inclined guide tube and the trumpet tube form an electric communication whole body,the whole body is not in contact with a backflow groove, a channel for electrochemical corrosion between the trumpet tube and the backflow groove is cut off directly, by cooperation of a ceramic mounting plate, a first ceramic cushion block, a first rubber sealing pad, a carrying frame, a second rubber sealing pad and a second ceramic cushion block, mounting carrying, sealing protection and automatic reinforcing are carried out, the problem that a position where a trumpet tube is connected with a backflow groove in the prior art is corroded quite easily is solved, and purposes of relieving the corrosion rate of the position where the trumpet tube is connected with the backflow groove and reducing the maintaining and changing frequency are achieved.