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

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.

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.

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 waterproof plug capable of improving waterproofness is provided. In a waterproof plug 1, the outside and the inside of a cylindrical resin member 2 are provided with a sealing section 3 including an outer circumference section 30 which intimately contacts to an inner wall face of a cavity 41 existing within a connector housing 4, and an inner circumference section 33 which intimately contacts to an outer circumference face of an electric wire 5, the electric wire 5 pulled out of the cavity 41 being inserted into the inner circumference section 33, and a contacting section 21 a of the resin member 2 is brought into contact with an inner wall face of an edge section 41 a of the connector housing 4 in which the electric wire 5 is pulled out of the cavity 41. The resin member 2 is provided with a plurality of protruded claw sections 211 protruding toward the side of the inner circumference section 33 along the circumference direction.

The invention discloses an anti-blocking and anti-corrosion structure for the junction of a horn pipe and a backflow groove. The electrically communicating whole is composed of a parallel guiding pipe, an inclined guiding pipe and the horn pipe and does not make contact with the backflow groove, and an electrochemical corrosion passage between the horn pipe and the backflow groove is directly cutoff; a ceramic mounting plate, a first ceramic cushion block, a first rubber sealing pad, a bearing frame, a second rubber sealing pad and a second ceramic cushion block are matched to conduct mounting bearing, sealed protection and automatic reinforcing, thus the problem that in the prior art, the junction of the horn pipe and the backflow groove are extremely prone to corrosion is solved, and the purposes of decreasing the corrosion rate of the junction of the horn pipe and the backflow groove and decreasing the maintenance and replacement frequency are achieved; and meanwhile, the anti-blocking and anti-corrosion structure is high in stability, can be self-sealed, and can significantly lower the blocking risk of the backflow groove.

The invention relates to a ultrashort packing machine seal and a working method thereof. The ultrashort packing machine seal comprises a static ring, a movable ring, a clamping ring and a flange; a convex edge is peripherally arranged on the outer wall of the static ring; the lower side of the convex edge of the static ring is tightly matched with the inner wall of the flange; multiple dowel pins are arranged between the convex edge and the flange; a spring is arranged between the lower end surface of the convex edge of the static ring and the flange for providing compensation power to the static ring; the upper end surface of the static ring is tightly matched with the lower end surface of the movable ring; the clamping ring is fixedly connected with the movable ring; the outer wall of the clamping ring is tightly matched with the inner wall of the movable ring; a groove is peripherally formed in the inner wall of the clamping ring, so that a first O-shaped sealing ring between the clamping ring and a rotating shaft to be sealed is arranged in the groove to achieve a better sealing effect; the clamping ring is directly contacted with the rotating shaft to prevent use of a shaft sleeve; the static ring is arranged in the flange; and the end surface of the flange is matched with the static ring to prevent use of a static ring mounting base and a movable ring mounting base, so that the structure is simple, and the axial length of the machine seal is effectively shortened.

The invention relates to a sealing noise reduction structure capable of being rapidly maintained on an orbit. The sealing noise reduction structure comprises a box body, a top cover and a sealing structure. The box body is a cube with an opening in the top wall, and the interior of the box body is used for containing equipment to be subjected to sound insulation and noise reduction. A counter groove is formed in the end face, facing the top wall, of the side wall of the box body. The sealing structure is an elastic component with a U-shaped cross section. The sealing structure is matched withthe counter groove in the side wall of the box body, and the sealing structure is placed in the counter groove in the side wall of the box body. The U-shaped opening of the sealing structure faces theside, with high inside and outside pressure, of the box body. The top cover is fixedly connected with the counter groove, with the sealing structure arranged, in the box body through a fastener. According to the sealing noise reduction structure, the noise of the equipment inside the box body can be reduced to 60 dB, and the sealing air leakage amount is not more than 1L / min. The sealing noise reduction structure has the functions of being good in bearing performance, good in sealing performance, capable of reducing noise, rapid in maintenance and convenient to disassemble and assemble, and normal work of astronauts on the rail can be guaranteed.

The invention discloses a packing shaft seal structure for a high-pressure reciprocation pump. The packing shaft seal structure for the high-pressure reciprocation pump comprises a shaft seal box connected on a pump body and a plunger arranged in the shaft seal box, a pressurizing piston type packing shaft seal assembly is arranged between the shaft seal box and the plunger, and a counter pull type packing shaft seal assembly is arranged inside and outside the shaft seal box. According to the packing shaft seal structure for the high-pressure reciprocation pump, the two kinds of internal pressure type packing shaft seal assemblies are used in a series connection mode, the distribution of the sealing radial force on the plunger by a packing ring is made to be identical the distribution of pressure of pumped media, the sealing radial force on the plunger by the packing ring is adjusted automatically along with the change of the pressure of the media inside the shaft seal box, dropped pressure occurring caused by abrasion of the packing ring can be compensated automatically, the defect that the sealing radial force on the plunger by the packing ring is just opposite to the pressure of the media in distribution in an existing external pressure type packing shaft seal structure is overcome, excessively fast abrasion of the outside packing ring and the plunger is avoided, and the reliability of the shaft seal is improved. The packing shaft seal structure is especially suitable for shaft seals of high-pressure or ultrahigh-pressure reciprocation pumps or the sealing of high-pressure or ultrahigh-pressure valves and valve rods.

The invention provides an adjustable oil receiving plate device and a control method thereof, belonging to the technical field of mechanical lubrication. In the present invention, a reversible oil receiving plate is arranged in the box of the reducer, and the oil receiving plate is connected to the driver electrically connected to the controller through a cable, and the oil receiving plate is provided with an oil receiving plate extending to the oil groove of the box body. The oil collecting groove and the oil passage hole with flange make it possible to control the driver to lower the oil receiving plate through the cable when the controller detects the low speed operation of the reducer, and receive the lubricating fluid brought by the gear through the oil receiving plate. After the oil is collected by the oil collecting groove, it flows into the oil groove of the box to realize the lubrication of the bearing. When the controller detects that the gearbox is running at a high speed, it can control the driver to pull the oil receiving plate through the cable to reduce or avoid the oil receiving plate. The collection of lubricating oil can prevent the risk of oil leakage caused by excessive lubricating oil and accumulation on the oil seal, which can not only realize the lubrication of the bearing, but also reduce the oil level of the lubricating oil, reduce the sealing pressure, and reduce the risk of oil leakage.