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296results about How to "Improve sealing performance" patented technology

Rubber barrel capable of resisting high-temperature steam, compressed type packer and sealing method

The invention relates to the field of sealing, in particular to a rubber barrel capable of resisting high-temperature steam, a compressed type packer with the rubber barrel and a sealing method. The rubber barrel comprises a sealing body, wherein the sealing body is provided with a first sealing section and second sealing sections; the first sealing section is easier to compress than the second sealing sections; when axially compressed, the first sealing section seals a first bulge in the radial direction, and the second sealing sections are not enough to seal a second bulge in the radial direction; the second sealing sections are close to steam holes for jetting the high-temperature steam, so that when the steam holes jet the high-temperature steam, the second sealing sections continuous to seal a third bulge in the radial direction under the action of the high-temperature steam to prevent direct contact between the high-temperature steam and the first sealing section or shorten the time for the high-temperature steam to contact with the first sealing section. The rubber barrel disclosed by the invention can realize low-temperature sealing and high-temperature sealing, and can both achieve a sealing effect and resist the high-temperature steam.
Owner:TIANDING SEALING TECH BEIJING CO LTD

Leakage-proof pressure-bearing hydraulic cylinder

The invention relates to a leakage-proof pressure-bearing hydraulic cylinder which comprises a left cylinder cover, a right cylinder cover, a cylinder drum, a cylinder rod, a piston and pressure bearing pieces. The cylinder drum is coaxially and fixedly arranged between the left cylinder cover and the right cylinder cover. The piston slides in the cylinder drum coaxially. The pressure bearing pieces are symmetrically arranged on the front radial face and the rear radial face of the piston respectively. The pressure bearing pieces are coaxially and fixedly arranged on the piston through clamping rings. Seals are coaxially arranged between the pressure bearing pieces and the radial faces of the piston. The leakage-proof pressure-bearing hydraulic cylinder is characterized in that two identical sealing rings are embedded in the portions, between the piston and the inner walls of the cylinder drum, of the cylindrical surface of the piston respectively, the sealing rings are groove type sealing rings, and the opening portions of the two groove type sealing rings are communicated with oil cavities formed in two sides respectively through an oil duct. The groove type sealing rings are adopted by the axial sealing rings of the hydraulic cylinder, and the two groove type sealing rings are communicated with the left oil cavity and the right oil cavity respectively, so that the sealing rings are expanded along with the changes of pressure, and the sealing performance is improved.
Owner:TIANJIN XINHAOSHENG HYDRAULIC MACHINERY TECH

Seamless vacuum cup and machining method thereof

The invention discloses a seamless vacuum cup and a machining method thereof. The machining method comprises the following steps: bending the upper end of an opening part of a stainless steel liner to the outer side to form a folding part; feeding the stainless steel liner into a stainless steel shell and sleeving the outer side of a drooping edge of the folding part on the upper end part of the opening part of the stainless steel shell; fusing and welding the end of the upper end part and a bent corner of the upper end of the drooping edge to form a whole body by argon-arc welding; and a polishing treatment step: carrying out polishing treatment on the outer surface of a welding part. The seamless vacuum cup machined by the method comprises a cup body and a cup cover, wherein the folding part which is bent toward the outer side is formed at the upper end part of the opening part of the stainless steel liner and the drooping edge of the folding part sleeves the upper end part of the opening part of the stainless steel shell; and the end of the upper end part and the bent corner of the upper end of the drooping edge are welded through the argon-arc welding to form an integrated structure. With the adoption of the seamless vacuum cup and the machining method thereof, the technical difficulty of seamless connection of the shell and the liner of the vacuum cup is solved, the sealing property and the whole intensity of the vacuum cup are improved, and the welding is more convenient and efficient.
Owner:ZHEJIANG HAERS VACUUM CONTAINERS CO LTD

Connectable chamber for porthole testing

InactiveCN1960907AImprove sealing performanceEliminate leakageMeasurement of fluid loss/gain rateShip windowsTight junctionLeakage test
The invention relates to shipbuilding and can be used for strength and leakage tests of the portholes of low-volume submersible vehicles. A connectable chamber is used for increased external pressure testing of the submersible vehicle portholes (1) which are arranged in a cylindrical body (socket welded connection) (2) provided with a supporting flange (11). The body of a chamber (4) is embodied at least partially in the form of a spherical surface and comprises a joining flange (9) which is provided with an internal annular collar (10) embodied in such a way that it encompasses the porthole (1). A device (14) for pressing the body (4) against the socket welded connection (2) is embodied in the form of a banding ring (15) provided with a sectional annular insert (16) arranged thereinside the contact surfaces of the ring and insert being embodied in the form of the surface a truncated cone. The annular insert (16) is provided with an annular slot for simultaneously embracing the supporting (11) and joining (9) flanges. The ring (15) is tightened by bolts (17), whereby the perfect junction thereof to the annular insert (16) and the tight crimping of the spherical body of the chamber (4) through a sealing ring are maintained. A working medium is supplied inside the body (4) by an internal pressure source. The inventive device reduces the test duration, increases the reliability thereof and can be used directly during the submersible vehicle operation.
Owner:ГОСУДАРСТВЕННОЕ УЧРЕЖДЕНИЕ "ФЕДЕРАЛЬНОЕ АГЕНТСТВО ПО ПРАВОВОЙ ЗАЩИТЕ РЕЗУЛЬТАТОВ ИНТЕЛЛЕКТУАЛЬНОЙ ДЕЯТЕЛЬНОСТИ ВОЕННОГО +1

Environment-friendly building wall system

The invention relates to an environment-friendly building wall system, and belongs to the technical field of wall heat preservation. According to key points of the technical scheme, an environment-friendly constant-temperature building wall comprises a wall body; the wall body comprises a foundation wall, and two side walls directly facing each other; the foundation wall and the side walls are integrally poured to be formed and are in a C shape; a first isolation plate parallel to the foundation wall is arranged between the two side walls, and mounting grooves with openings which directly face each other are formed in the two side walls; the mounting grooves are vertically formed in the height direction of the side walls, and the mounting grooves are formed in a step shape; and first isolation sliding blocks which are in sliding fit with the mounting grooves are fixedly arranged on the two sides of the first isolation plate, the sides, deviating from the foundation wall, of the side walls are sequentially provided with a second isolation plate, a reinforced layer, a sound insulating layer and a heat insulating layer from inside to outside, and an air layer is arranged between the first isolation plate and the second isolation plate. The effect of improving the heat preservation capacity of the wall is achieved.
Owner:天津弘野建设集团有限公司

Sliding side wall covered wagon for railway transportation

InactiveCN103303325AImprove sealing performanceAxle-box lubricationWagons/vansIn vehicleRail transportation
The invention discloses a sliding side wall covered wagon for railway transportation, which comprises a vehicle body steel structure and a sliding side wall, wherein the vehicle body steel structure comprises a center back and an underframe which are connected with each other. The sliding side wall covered wagon provided by the invention further comprises the sliding side wall, the center back and the underframe are welded with each other through end walls at the two ends of the vehicle and a side wall vertical column in the middle, the sliding side wall comprises two walls, an upper sliding rail assembly, a lower sliding assembly and a switching device, pulleys are arranged on the side walls, the upper sliding rail assembly is connected with the center back, the lower sliding rail assembly is connected with the under frame, the upper sliding rail assembly and the lower sliding rail assembly form two sliding rails arranged up and down as a support when the side walls are sliding, the switching device comprises an operating handle, a connecting rod and a locking device, wherein the operating handle is connected with the end wall at the end part of the vehicle body, and is connected with the locking device through the connecting rod, the locking device is connected with the underframe and the center back; and the sliding side wall covered wagon is good in sealing effect, high in mechanized handling efficiency and fast in vehicle running period, and the large size goods hoisting is satisfied through end part operation.
Owner:CRRC SHANDONG CO LTD

Micropressure pot

InactiveCN102397001AImprove sealing performanceReduce cooking time for stews or soupsCooking vesselsEngineeringMechanical engineering
The invention discloses a micropressure pot. The micropressure pot comprises a pot body (6), a pot cover (4) and a seal ring (5), wherein reverse side steps (8) are arranged on the pot body (6); a pot cover protruding side (14) matched with the reverse side steps (8) and a right angle side are arranged on the pot cover(4); an air hole (11) is arranged on the pot cover (4); and an inner clamping groove opened inward and a V-shaped mouth (17) opened outward are arranged on the seal ring (5); the inner clamping groove of the seal ring (5) is clamped on the pot cover protruding side(14); the inner side of the V-shaped mouth (17) is pressed on the right angle side of the pot cover (4); the upper bottom surface of the V-shaped mouth (17) is a plane; two circles of inner-outer circle small protruding points (15 and 16) which are uniformly and circumferentially distributed and mutually staggered and have the same height respectively are arranged on the plane; and an inclined surface of the V-shaped mouth (17) is a sealing surface (18) which is matched with the reverse side steps (8) of the pot body (6). Due to the adoption of the structure, the micropressure pot has the advantages of simple and reasonable structure, short soup-stewing time, energy saving, emission reduction and the like, is convenient to use and operate and runs safely and reliably.
Owner:ZHEJIANG COOKER KING COOKER

Double-floating integrated mechanical seal with large shaft diameter

InactiveCN102927286AImprove sealing performanceReduce stress deformationEngine sealsMechanical engineeringWaterline
The invention discloses a double-floating integrated mechanical seal with large shaft diameter, and relates to the technical field of mechanical seals. The double-floating integrated mechanical seal comprises a dynamic ring assembly and a static ring assembly, wherein the dynamic ring assembly comprises a dynamic ring which is connected with a rotary shaft by a shaft sleeve; a shaft sleeve O-shaped sealing ring is arranged between the shaft sleeve and the rotary shaft; a movable O-shaped sealing ring is arranged between the movable ring and the shaft sleeve; the static ring assembly comprises a static ring base and a static ring arranged on the static ring base; the end surface of the static ring is adhered with the end surface of the dynamic ring; a spring base is arranged on one side of the static ring base; a spring is arranged between the spring base and the static ring base; the double-floating integrated mechanical seal is characterized in that a floating O-shaped sealing ring is arranged at the bottom of the dynamic ring; a sealing cushion is arranged between the static ring and the static ring base; and waterlines are turned at the bottom of the static ring and the upper part of the static ring base, namely two planes contacting with the sealing cushion. According to the double-floating integrated mechanical seal disclosed by the invention, the floating O-shaped sealing ring is additionally arranged at the bottom of the dynamic ring, so that the sealing performance of the dynamic ring auxiliary seal is increased, and stress deformation generated by contacting can be reduced at the same time.
Owner:安徽亚兰密封件股份有限公司

Branching air supply device and refrigerator comprising same

The invention relates to a branching air supply device and a refrigerator comprising the same. The provided branching air supply device used for the refrigerator comprises a shell body, an adjusting piece, a driven wheel disc and a driving mechanism, wherein the shell body is provided with at least one air inlet and a plurality of air outlets; the adjusting piece is provided with a rotary disc part and is rotationally arranged in the shell body so that each air outlet can be completely or partially covered or completely exposed, and accordingly the air outlet area of each air outlet is adjusted; the driven wheel disc and the rotary disc part are coaxially fixed to the rotary disc part, and the driven wheel disc is located outside the shell body; and the driving mechanism is arranged to drive the driven wheel disc to rotate. In addition, the invention further provides the refrigerator comprising the branching air supply device. According to the branching air supply device and the refrigerator comprising the same, the driven wheel disc is installed outside the shell body, matching holes which are large and used for enabling the driving mechanism to be matched with the adjusting piece can be decreased, accordingly, the sealing performance of the shell body can be improved, and cold air entering the shell body is prevented from flowing out from the matching holes.
Owner:HAIER SMART HOME CO LTD

Magnetofluid sealing structure

The invention discloses a magnetofluid sealing structure. The magnetofluid sealing structure comprises a hollow shell and a rotating shaft; the rotating shaft and the shell are connected through a bearing in an assembled mode, multistage of steps are arranged on the outer surface of the rotating shaft, and at least one second permanent magnet is arranged in the radial direction between the outer surface of the rotating shaft and the inner wall of the shell; pole shoes are arranged on the two sides of each second permanent magnet, and each pole shoe is arranged to directly face one of the steps; gaps exist between the pole shoes and the outer surface of the rotating shaft, and magnetofluid is injected to the gaps; the rotating shaft is provided with a cavity, first permanent magnets are mounted in the cavity, and each first permanent magnet is correspondingly arranged in a magnetic circuit formed by the corresponding second permanent magnet and the pole shoes on the two sides of the corresponding second permanent magnet; and the field directions of the first permanent magnets are the same as that of the magnetic circuits where the first permanent magnets are located. According to the magnetofluid sealing structure, by additionally provided with the first permanent magnets, sealing performance of the magnetofluid is improved, the anti-pressure capability of magnetofluid sealing is increased, and the rotating shaft is designed by adopting a stepped shaft form, so that loss of the magnetofluid during sealing failure is reduced.
Owner:GUANGXI UNIVERSITY OF TECHNOLOGY

Butt joint device used for industrial gas pipeline installation

The invention belongs to the technical field of gas pipeline installation and particularly relates to a butt joint device used for industrial gas pipeline installation. Specific to the problems that atraditional gas pipeline butt joint manner is relatively simple and common in connecting strength, the following scheme is now put forwards. According to the scheme, the butt joint device comprises agas pipeline body, a supporting bracket box, a first butt joint ring and a second butt joint ring, wherein the first butt joint ring and the second butt joint ring are welded to the opposite sides ofthe gas pipeline body. Protruding rings which are staggered are welded to the opposite sides of the first butt joint ring and the second butt joint ring correspondingly, and ring grooves matched withthe protruding rings are formed in the opposite sides of the first butt joint ring and the second butt joint ring correspondingly. Threaded alignment rods which are distributed in a ring shape at equal intervals are welded to the outer wall of one side of the first butt joint ring, and the end portions of the threaded alignment rods are connected with lock nuts through threads. By means of the butt joint device used for industrial gas pipeline installation, an arranged locking clamping rod can be matched with bar-shaped grooves with Y-shaped cross sections to conduct effective connection treatment on the two butt joint plates, and therefore the butt joint strength of the gas pipeline body can be effectively improved.
Owner:潮州深能燃气有限公司

Mine dust removing device

The invention discloses a mine dust removing device which is suitable for installing at various tunnels, convenient for cleaning a filter screen and carrying, and good in sealing performance. The minedust removing device comprises a box body and the filter screen positioned inside the box body, wherein the box body consists of a front box body and a rear box body which are matched with each otherin a movable way; the end of the front box body is provided with a filter screen frame, the filter screen is arranged inside the filter screen frame, and the bottom of the filter screen frame is provided with a water draining hole; and water sprayers are arranged at the front and the rear of the filter screen, and the vertex angles of the front box body and the rear box body are in circular arc shapes. By adopting the structure that the front and the rear box bodies are matched with each other in a movable way, the filter screen can be very conveniently disassembled and cleaned; meanwhile, asthe water sprayers are arranged at the front and the rear of the filter screen, the times for cleaning the filter screen can be reduced; and the vertex angles of the front box body and the rear box body are in circular arc shapes, so that the problem of extrusion and occupation between the vertex angles and a vent pipe of the tunnel and the like can be solved. Furthermore, the device is applicable to various tunnels.
Owner:李永吉

Clean sealed boiler flue gas desulfurization and denitration device with filtering function

The invention discloses a clean sealed boiler flue gas desulfurization and denitration device with a filtering function. The device comprises a boiler body, a placement strip, a cooling tower, a fixing ring, and a water pump, the upper end of the boiler body is seamlessly connected with a smoke-outlet pipe, the outer wall of the cooling tower is seamlessly connected to the input end of a smoke-inlet pipe, the output end of a driving motor is flanged to a rotating shaft, the fixing ring is fixedly welded to the inner bottom end of the cooling tower, and the output end of a condensing tube is injection-connected to a collecting pipe. The clean sealed boiler flue gas desulfurization and denitration device with filtering function has a connection manner of slot connection between the smoke-outlet pipe and the connecting pipe and between the connecting pipe and the smoke-inlet pipe, a user can conveniently perform disassembly and assembly between the smoke-outlet pipe and the connecting pipe and between the connecting pipe and the smoke-inlet pipe, the situation that the pipe connection is too long and the inside is prone to blockage is avoided, so that the user can timely dredge and clean the inside of the pipe, and a sealing gasket is beneficial to increase of the sealing performance between the pipes.
Owner:余汉锡

Magnetic liquid sealing device with controllable sealing clearance

A liquid sealing device with a controllable sealing gap belongs to the field of mechanical engineering sealing. It solves the problem that the existing magnetic liquid sealing device has a large diameter and a large temperature difference, and the sealing gap changes due to the thermal expansion and contraction characteristics of the material, which seriously affects the performance of the sealing device. The device is composed of a magnetic liquid sealing assembly, a spring (3), a spring base (2) and the like. The inner surface of the pole piece is parallel to the outer surface of the truncated portion of the shaft sleeve (11) and intersects with the axis of the rotary shaft (13). There is an axial clearance H between the end cover (9) and the housing (1): tighten the screws on the end cover (9), the axial clearance H becomes smaller, and the pole piece and the permanent magnet (6) are aligned axially as a whole. Move to the left, the sealing gap becomes smaller; when the screw on the end cover (9) is loosened, the axial distance H becomes larger, and the pole piece and the permanent magnet (6) move along the axial direction as a whole under the elastic force of the spring (3). Moving to the right, the seal gap becomes larger. Adjust the screw on the end cover (9) to adjust the size of the sealing gap.
Owner:BEIJING JIAOTONG UNIV
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