1586results about "Screw threaded joints" patented technology

The invention belongs to the field of petroleum industry, and discloses a high-torsion-resistance casing air-tight seal screwed joint structure which comprises a male end screwed joint and a female end screwed joint, and the male end screwed joint comprises male end threads, a male end inner sealing face, a male end outer sealing face, a male end inner circular bead and a male end outer circular bead. The female end screwed joint part comprises a female end thread, a female end inner sealing surface, a female end outer sealing surface, a female end inner circular bead and a female end outer circular bead; in the screwing process of the male end threaded connector and the female end threaded connector, the male end outer circular bead and the female end outer circular bead firstly make contact with each other and abut against each other, then bear torque and continue screwing, then the male end inner circular bead and the female end inner circular bead make contact with each other and abut against each other, screwing and screwing are finished, and a special thread form with high connection strength and excellent air-tight sealing capacity is formed. The over-torsion torque can be more than four times that of a common API connector, the connector is not damaged, and the air-tight sealing performance and the connecting performance can still be guaranteed.

A conduit coupling assembly for joining together two metal conduits includes a first fitting having a first end opposite a second end, wherein the first end is threadably attached to the conduit, and a first washer attached to the second end of the first fitting, wherein the first washer is non-metallic. The coupling may further include a second fitting in abutment with the first washer, a nut surrounding the first fitting and the second fitting, and a second washer disposed between the nut and the second fitting, wherein the second washer is non-metallic.

Apparatus and related method for coupling adjacent pipe lengths, for example, a drop pipe assembly that utilize an intermediate coupling member to prevent rotational disengagement of adjacent pipe lengths under the influence of rotational torque. The coupling member can comprise an internal key feature that physically engages a keyed end on at least one end of a length of pipe. The internal key feature can include key members located on each coupling end of the coupling member such that the key members engage corresponding keyed ends of adjacent lengths of pipe such that the coupling member prevents rotation of the adjacent pipe length relative to each other.

The invention relates to the technical field of instrument valves, in particular to an anti-freezing petrochemical engineering valve. Connecting flanges are connected to the two ends of the valve body, closed rings are fixed to the two ends in the valve body, guide grooves are formed in the top ends and the bottom ends of the two ends in the valve body, conical pistons are slidably connected to the inner sides of the guide grooves, and the ends, away from each other, of the two conical pistons are slidably connected with the closed rings; a closing mechanism used for driving the conical piston and the closed ring to be separated or sealed is arranged on the inner side of the valve body. According to the anti-freezing petrochemical engineering valve, the closing mechanism is started to drive the conical piston to be in separation and sealing contact with the closed ring in the direction away from or close to each other, then petroleum in the valve body is effectively isolated or circulated, and the isolation and sealing effects of the petroleum are effectively improved through the arrangement of the conical piston and the closed ring; and through the arrangement of the two closed rings and the conical piston, the petroleum leakage condition is effectively prevented, and the practicability of the device is promoted.

A fastener for connecting a coated conduit to a fitting or to another coated conduit includes a bushing and polymeric material coating and surrounding an external surface of the bushing. The bushing includes internal and external threading The polymeric material includes a central portion coating at least the first end of the bushing, a first flexible sleeve extending from the central portion in a first direction and creating a cavity, and a second flexible sleeve extending from the central portion in a second direction, opposite the first direction. The external threading of the bushing is configured to be threaded into a fitting or conduit such that the first flexible sleeve fits over a circumference of the fitting or a coated conduit, and the internal threading of the bushing is configured to be threaded onto coated conduit such that the second flexible sleeve fits over a circumference of the coated conduit.

A recreational vehicle waste delivery system with lengths of 3D cylindrical non-flexible tube and of 3D cylindrical flexible-tube, a first-coupler and, a second-coupler. The first coupler, the at least one flexible-tube, the second-coupler and the at least one flexible-tube in combination are able to be removably couplable modularly in series to provide an adjustable, modular waste management system for delivering waste from an rv to an in-ground sewer connection when engaged with a disposal fitting of the rv.

The utility model relates to the related technical field of gas connectors, and provides a direct insertion type gas hose connector with a gas leakage prevention structure. The direct insertion type gas hose connector comprises a connector body and a gas hose, the gas hose is arranged at one end of the connector body in a sleeving mode, and an outer sleeve layer is arranged outside the connector body; the pressing and sealing assembly is arranged between the connector body and the outer sleeve layer, the reinforcing and supporting assembly is arranged outside the outer sleeve layer, the pressing and sealing assembly comprises an outer thread layer, the outer thread layer is arranged outside the connector body, an outer ring groove is formed in the surface of the connector body, and the outer sleeve layer is connected to the outer thread layer in a screwed mode through threads. By means of the technical scheme, the technical problems that in the prior art, due to movement of equipment and vibration of a pipeline, a connector is loosened, the sealing effect is greatly reduced, due to temperature change, a hose and a connector material are shrunk or expanded, and a sealing structure is damaged are solved.

A circulating circuit member 1 forms a part of a circulating circuit through which a fluid flows. The circulating circuit member 1 includes a pipe 4; a to-be attached member that has a sleeve portion 3 made of synthetic resin to which the pipe 4 is rotationally connected; and a pin 6 that is inserted from the sleeve portion 3 to the pipe 4, in which a pin insertion hole 5 of the sleeve portion 3 through which the pin 6 is inserted is formed by a mold that is pulled out from an inside of the sleeve portion 3.

To adjust misalignment of tubes joined together in the peripheral direction more accurately than conventionally.SOLUTION: A method for manufacturing a tube screw joint comprises: a step (step S1) of forming a box at one end of a first element tube having a first marking added to the outer peripheral surface; a step (step S3) of disposing a second element tube having a second marking added to the outer peripheral surface in a first lathe so as to set the second marking at a prescribed pin machining initial position and to form a trial pin on one end of the second element tube; a step (step S4) of fastening the box and a trial pin together to measure a misaligning amount α; and a step (step S5) of disposing a third element tube having a third marking added to the outer peripheral surface in the first lathe so as to set the third marking at the pin machining initial position, and forming a pin at one end of the third element tube by using a program having the rotation angle of the element tube offset by the misaligning amount α with respect to a program used for machining the trial pin.SELECTED DRAWING: Figure 3

The invention discloses a combinable multi-way valve adopting a double-valve-element structure, and relates to the technical field of new energy automobile heat pump heat management systems, the combinable multi-way valve comprises a valve body, a first valve element, a second valve element, a valve element driving unit and a plurality of water pipe connectors; according to the combinable multi-way valve adopting the double-valve-element structure, the two independent valve cavities are formed in the single valve body, and the first valve element and the second valve element which are controlled by the valve element driving unit through a synchronous and asynchronous gear system are arranged; through cooperation of a middle sealing ring used for isolating a valve cavity and a connector sealing ring used for guaranteeing external sealing, cooperative and non-cooperative accurate rotation control over the two cylindrical valve elements can be achieved through a single motor driving system, and therefore the purpose that the two cylindrical valve elements can be accurately rotated and controlled on the premise that reliable sealing and independent action of the valve elements are guaranteed is achieved. The complexity of a mechanical structure and an electric control system controlled by multiple channels is remarkably simplified, and a solid structural foundation is laid for further realizing multifunctional integration.

A tubular coupling (1) including a first tubular part (2) and a second tubular part (3), each tubular part (2, 3) having a thread (8) and a sealing surface (9, 7, 13, 15), the thread (8, 14) having a varying thread width, the threads (8, 14) interlocking in an assembled state of the tubular coupling (1), the sealing surfaces (7, 9, 13, 15) in sealing contact in the assembled state of the tubular coupling (1), the tubular coupling (1) having a reference mark (26) having an optimum relative position between the tubular parts (2, 3), the optimum relative position corresponding to a nominal optimum relative position with a correction applied, the correction being a function of a characteristic of one of the first tubular part (2) and the second tubular part (3) on which the reference mark is provided, and a target torque of the tubular coupling (1).

The present invention provides a tube connector and a tube with a connector that allow for precise alignment of the tip position of a medical tube when attaching it. [Solution] A tube connector 12 for connecting a medical tube 11 to a medical device, comprising a female member 21 into which the medical tube 11 is inserted, a male member 22 that screws into the female member 21, and a packing 23 that is housed in the female member 21 and deforms as the male member 22 screws into the female member 21, thereby fixing the medical tube 11, wherein at least the male member 22 of the female member 21 and male member 22 is translucent.

A connection assembly enabling torque transfer between coaxially-aligned components includes: an upper component carrying an upper spline; a lower component threadedly engageable with the upper component and carrying a lower spline: a coupling ring having first and second splines; and means for axially moving the coupling ring, relative to the upper and lower components, between a free position in which the coupling ring is freely rotatable relative to the connected upper and lower components, and a seated position in which the coupling ring is rotationally coupled to the upper component by engagement of the first coupling ring spline with the upper spline, and rotationally coupled to the lower component by engagement of the second coupling ring spline with the lower spline. The upper and lower splines have different numbers of evenly-spaced spline ridges, which on at least one of the upper spline and the lower spline are axially tapered.

The utility model discloses a waterway sealing structure, which is applied to a solar shower column, and at least comprises a column waterway sealing structure, the structure further comprises an upper column connecting cover which is sleeved at the lower end of an upper column of the solar shower column, and four arc-shaped clamping grooves which extend along the circumferential direction and are uniformly arranged at intervals are arranged in the upper column connecting cover; the arc-shaped clamping groove is provided with an opening part and a locking part; the lower column connecting cover is arranged at the upper end of a lower column of the solar shower column in a sleeving mode, four arc-shaped buckles which extend in the circumferential direction and are evenly arranged at intervals are arranged in the lower column connecting cover, and the sizes of the arc-shaped buckles are matched with the opening parts and the locking parts of the arc-shaped clamping grooves; in the rotating process of the upper column connecting cover relative to the lower column connecting cover, the arc-shaped buckle can slide to the locking part from the opening part, so that locking between the upper column connecting cover and the lower column connecting cover is formed; the middle sealing ring is arranged in a sealing ring placing groove in the lower column connecting cover; when the upper column connecting cover and the lower column connecting cover are locked, the middle sealing ring is extruded and wrapped by the upper column connecting cover and the lower column connecting cover in a two-way mode, and column water path sealing is formed after the upper column and the lower column are connected.

The utility model relates to the technical field of hydraulic pipe connectors, in particular to a hydraulic pipe connector with a reinforcing structure, which is characterized in that a right sleeve is rotatably mounted on the outer wall of one side of a middle pipe, a roller path is arranged on the inner wall of one side of the right sleeve, and a plurality of balls are fixedly mounted on the outer wall of one side of the roller path; a plurality of moving cavities are formed in the inner wall of one side of the middle pipe, rotating cylinders are fixedly mounted on the outer walls of one sides of the moving cavities, triangular blocks are rotatably mounted on the outer circular surfaces of the rotating cylinders, pressing blocks are slidably mounted on the outer walls of one sides of the triangular blocks, and springs are fixedly mounted on the outer walls of one sides of the triangular blocks; the hydraulic pipe connector with the reinforcing structure has the advantages that the threaded pipe is detached by pressing the pressing block, the threaded sleeve is rapidly replaced, so that the connector is reused, the reliability of connector connection is further enhanced through the balls of the left sleeve and the right sleeve, and the hydraulic pipe and the connector are prevented from falling off.

The utility model discloses an anti-loosening device of a pipe joint and process equipment of a semiconductor device. The anti-loosening device of the pipe joint comprises a first buckle and a second buckle, the first buckle is movably fixed to a first pipeline through a first screw assembly, and the first end of the first buckle clamps the pipe joint of the first pipeline so as to fix the pipe joint of the first pipeline; the second buckle is located on the outer side of the first buckle, a strip-shaped groove hole is formed in the second buckle, the second screw penetrates through the strip-shaped groove hole so that the second buckle can be movably fixed to the first buckle through the strip-shaped groove hole, and the first end of the second buckle clamps the pipe joint of the second pipeline so as to fix the pipe joint of the second pipeline. According to the anti-loosening device, reliable connection of the pipe joint in an unstable working environment can be kept, assembly is rapid and convenient, the pipe joint does not need to be matched with the fixing buckle, and in the pipe joint maintenance process, the fixing buckle can be prevented from falling off or being lost.

A fluid connection assembly, including a connector body, including a first end, a second end, a through-bore, a first radially outward facing surface including an annular groove, a first radially inward facing surface extending from the first end, and a second radially inward facing surface extending from the second end, and a retainer operatively arranged to be removably connected to the connector body, the retainer including a third end, a fourth end, a first section, a second section displaceable with respect to the first section, a third radially inward facing surface, a first flange extending radially inward from the third radially inward facing surface and operatively arranged to engage the annular groove, and a second flange extending radially inward from the third radially inward facing surface.

The present invention discloses a one-way valve with corrosion resistance and one-way conduction, which comprises an inlet end valve body, an outlet end valve body and a one-way control component. The one-way control component includes a sealing platform, a spring and a hollow gasket assembled in the communication groove of the inlet end valve body. The outer surface of the spring is wrapped with an anti-corrosion sleeve. A "convex" shaped protrusion is arranged on the side of the sealing platform facing the spring. The hollow gasket is positioned and assembled on the protrusion by sleeving on the protruding part of the protrusion, and a flow space is formed between the hollow gasket and the sealing platform. Both ends of the spring abut between the hollow gasket and the bottom wall of the insertion groove of the outlet end valve body. By wrapping the outer surface of the spring with an anti-corrosion sleeve, the present invention prevents the spring from being corroded and prolongs the service life of the spring. Also, by designing the flow space, even if the spring forms a cylinder due to pressure, a closed space will not be formed between the spring and the sealing platform, completely solving the problem of liquid blockage or the problem of excessive gas pressure.

The utility model relates to the field of air compressors, in particular to an air compressor intercooling pipe structure which comprises a first pipe body and a second pipe body, the first pipe body comprises a connecting part, an adjusting part and an inserting part arranged at the end, away from the connecting part, of the adjusting part, and external threads are formed in the outer side wall of the adjusting part; the inner side wall of the end, close to the first pipe body, of the second pipe body is provided with internal threads matched with the external threads. The device has the effects that the practicability of the intercooling pipe is improved, the possibility that the maintenance efficiency is affected by the problems such as carrying errors in the installation process of workers is reduced, and the installation effect of the intercooling pipe is improved.

The utility model relates to the technical field of water delivery pipe sealing technology, more particularly to a kind of sealing pipe fittings, including pipe body unit and contact seal, several pipe body units are sequentially connected to form pipeline when installing, further including sealing compensation mechanism, sealing compensation mechanism is installed in the one end of pipe body unit cavity, sealing compensation mechanism includes drive part and compensation seal, drive part is connected with compensation seal, the side of contact seal and the side of compensation seal away from drive part abut, the other side of contact seal and the inner wall of pipe body unit and the end surface of another pipe body unit abut.The utility model can self-adapting compensation sealing ring ageing abrasion or the problem of sealing failure caused by pipe fittings thermal expansion and cold shrink, improve the fatigue resistance and service life of sealing structure.

This utility model discloses a high-efficiency hot and cold water stratification anti-electric shock wall water inlet pipe, relating to the field of hardware equipment technology. The utility model includes a connecting pipe, the top of which is connected to a water supply pipe, and an isolation pipe fixedly connected to the surface of the water supply pipe; a buffer assembly is installed inside the isolation pipe. This utility model significantly improves the hot and cold water stratification effect by setting up four sets of twisted circulation pipes arranged circumferentially around the water supply pipe, and buffer pipes perpendicularly aligned with the circulation pipes. When cold water enters the circulation pipe through the water supply pipe, the twisted design extends the water flow path, reduces water pressure, and slows down the flow rate. The buffer pipes cooperate with the buffer tank, causing the water flow discharged from the circulation pipe and the buffer pipe to collide vertically within the buffer tank, offsetting high-pressure impacts and reducing eddy current generation. This structure effectively avoids the problem of hot and cold water mixing caused by cold water directly entering the hot water layer, ensuring stable hot and cold water stratification in the water storage tank and improving the continuity and comfort of hot water output.

To efficiently remove a coating material covering the outside and inside of a pipe joint without any trouble.SOLUTION: A coating removal tool 10 removes a coating material of a joint part in which a spiral groove is formed, the coating removal tool comprising a rod-shaped body part 1 having a handle 11 that can be held by hand, and a first removal blade part 2 provided at one longitudinal end part of the body part. The first removal blade part 2 has a blade 21 consisting of a plurality of peaks and valleys along a longitudinal direction of the body part 1.SELECTED DRAWING: Figure 1

The utility model discloses a durable hydraulic pipe joint, which relates to the technical field of pipe joints, and has the technical scheme that the durable hydraulic pipe joint comprises a screwing section, a threaded section, an elastic washer, an embedded block and an embedded groove, an inner cavity communicated with the embedded groove is formed in the screwing section, and a plurality of ejection blocks used for extending into the embedded groove and ejecting the embedded block out of the embedded groove are connected in the inner cavity in a sliding manner. The embedded block is limited by the embedded groove, the elastic washer can be pre-fixed, so that the elastic washer is prevented from deviating due to uneven stress when the connector is connected with a pipeline, the sealing effect of the elastic washer is guaranteed, meanwhile, the embedded block can be quickly separated from the embedded groove through the matching of the driving piece and the ejection block, and the sealing effect of the elastic washer is guaranteed. The quick disassembly of the elastic washer is realized, the sealing effect of the elastic washer is ensured, the elastic washer can be conveniently replaced by an operator, the screwing section and the threaded section are both made of stainless steel materials, and the stainless steel materials are high in strength and corrosion-resistant, so that the whole joint is relatively durable.

The hydrogen pipeline connecting device capable of being rapidly disassembled and assembled comprises a second pipeline, a circular ring groove is formed in the right side of the second pipeline, a circular ring block is arranged in the circular ring groove, a first pipeline is fixedly connected to the right side of the circular ring block, a first fixing block is fixedly connected to the outer side of the first pipeline, and a second fixing block is fixedly connected to the outer side of the first fixing block. The first fixing blocks are arranged on the two sides, square blocks are fixedly connected to the outer sides of the second pipelines, fixing structures are arranged between the square blocks and the first fixing blocks, threaded covers are slidably connected to the right sides of the square blocks, grooves are formed in the threaded covers, the second fixing blocks are arranged in the grooves, and the fixing structures comprise concave holes. The concave holes are formed in the left side and the right side of the first fixing block. Through the arrangement of the fixing structure, a worker can manually disassemble the hydrogen pipeline without the help of a tool, and the hydrogen pipeline is convenient, rapid, time-saving and labor-saving.

The utility model discloses a plug-in movable joint of a refrigeration pipeline in the technical field of refrigeration pipeline connection, which comprises a butt joint solenoid, a connection main body, a clamping pipe, a clamping pipe fastener, a positioning ring and a non-return clamp spring, and the butt joint solenoid and the clamping pipe are respectively in butt joint with openings at two ends of the connection main body in a sealing way; the two independent butt joint pipes are in sealed butt joint through the butt joint screw pipe, the connecting body and the clamping pipe to form a communicated pipeline, the joint structure of the device is in multi-stage continuous sealing, the two independent butt joint pipes can be connected in a sealed mode, the sealing degree is high, only the connecting body needs to be screwed during butt joint, operation is easy, and meanwhile the butt joint effect is good. During connection, open fire welding, operation of professionals and professional equipment are not needed, space limitation is avoided, insertion is stable, the butt joint pipe can be effectively locked, threads can be locked through deformation of the connection body, and the threads are effectively prevented from loosening in the equipment vibration process.

The utility model discloses a sealing interface structure and a liquid cooling system. The sealing interface structure has an axial direction and comprises a matching part and a plug connector. The matching part is provided with a matching end face at one axial end and a connector, and an inner smooth section and an inner thread section are sequentially arranged on the inner wall of the connector in the axial direction. The plug connector is provided with a connector extending in the axial direction, and an outer smooth section and an outer thread section are sequentially arranged on the outer wall of the connector in the axial direction. Wherein the external thread section is in threaded fit with the internal thread section so that the plug connector can be connected to the plug connector, a sealing ring is embedded in at least one of the external smooth section and the internal smooth section, and the sealing ring is clamped between the external smooth section and the internal smooth section so as to be used for sealing the external smooth section and the internal smooth section. In the process that the connector is screwed into the connector, the sealing ring can be extruded more evenly under the limitation of a thread fit structure, and therefore the sealing reliability is guaranteed. And on the other hand, the fitting and the plug connector can be fixed only through thread fit, the overall structure is simple, and the occupied space is small.

The utility model provides a vehicle push -and -pull sheath pipe with waterproof sealing device relates to vehicle push -and -pull sheath pipe technical field, include: the sleeve body, both ends of sleeve body are equipped with fixed establishment, the fixed establishment includes sleeve piece, the outer surface of sleeve piece is sleeved with thread ring, the thread ring is connected with sleeve piece threadedly, the outer surface of sleeve piece is sleeved with sliding ring, spring no.