CN110081251B - Self-sealing type sealing joint of flared tube - Google Patents
Self-sealing type sealing joint of flared tube Download PDFInfo
- Publication number
- CN110081251B CN110081251B CN201910384395.2A CN201910384395A CN110081251B CN 110081251 B CN110081251 B CN 110081251B CN 201910384395 A CN201910384395 A CN 201910384395A CN 110081251 B CN110081251 B CN 110081251B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- piece
- port
- piston sleeve
- middle shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L29/00—Joints with fluid cut-off means
Abstract
The invention provides a self-sealing type sealing joint of an flared tube, which comprises a rear cover and a middle shaft sleeve sleeved at the lower end of the rear cover, wherein the rear cover is axially butted with an inner cavity of the middle shaft sleeve to form an oil through cavity, an oil blocking mechanism is arranged in the oil through cavity, a piston sleeve is arranged in the middle shaft sleeve, one end of the piston sleeve is provided with a flange in clearance fit with the inner wall of the middle shaft sleeve, a limiting mechanism is arranged at the port of the middle shaft sleeve, and the piston sleeve axially moves between the rear cover and the limiting mechanism through the flange; the oil blocking mechanism comprises an upper piece and a lower piece, the upper piece is arranged inside the rear cover and is an inverted cone-shaped barrel piece with a through hole formed in the side wall, the end wall of the opening at the upper end of the upper piece radially extends outwards to form a spring supporting flange, a pre-pressing spring is arranged between the spring supporting flange and the flange of the piston sleeve, one end of the lower piece is nested at the opening at the lower end of the upper piece, the other end of the lower piece extends to penetrate through the piston sleeve, and the end, penetrating through the piston sleeve, of the lower piece is provided with a stop block, the maximum width of which is larger than the size of the port at the lower part of the piston sleeve.
Description
Technical Field
The invention relates to a self-sealing type sealing joint of a flared tube.
Background
When oil is injected into a workpiece, an oil pipe sealing joint is generally needed to communicate an oil injection pipeline with the orifice of the workpiece, and when the oil injection joint is pulled out from the orifice of the workpiece after oil injection is finished, residual oil in the oil injection pipeline and the joint flows out and drips outside the workpiece, so that oil loss and oil pollution to workshops and the environment are caused. Therefore, a sealing joint with a self-sealing function corresponding to a flared tube is urgently needed in the market.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a self-sealing type joint for flared tubes.
In order to achieve the above purpose, the invention adopts the technical scheme that: a self-sealing joint of an flared tube comprises a rear cover and a middle shaft sleeve sleeved at the lower end of the rear cover, wherein the rear cover is axially butted with an inner cavity of the middle shaft sleeve to form an oil through cavity, and a piston sleeve and an oil blocking mechanism are arranged in the oil through cavity; the piston sleeve is arranged in the middle shaft sleeve, one end of the piston sleeve is provided with a flange which is in clearance fit with the inner wall of the middle shaft sleeve, the port of the middle shaft sleeve is provided with a limiting mechanism, and the piston sleeve axially moves between the rear cover and the limiting mechanism through the flange; the oil blocking mechanism comprises an upper piece and a lower piece, the upper piece is arranged inside the rear cover and is an inverted cone-shaped barrel piece with a through hole formed in the side wall, the end wall of the opening at the upper end of the upper piece radially extends outwards to form a spring supporting flange, a pre-pressing spring is arranged between the spring supporting flange and the flange of the piston sleeve, one end of the lower piece is nested at the opening at the lower end of the upper piece, the other end of the lower piece extends to a port at the lower part of the piston sleeve, and the end of the lower piece, which penetrates through the port at the lower part of the piston sleeve, radially extends outwards to form a stop block with the size larger than that of the port at the lower part of the piston sleeve.
According to the self-sealing type sealing joint of the flared tube, the rear cover is connected with the middle shaft sleeve to form an oil through cavity, the oil through cavity is used for transmitting oil of an oil source to an oil using workpiece, the sealing joint is connected with an oil source pipeline through the gland, the limiting mechanism supports the flange of the piston sleeve, so that the piston sleeve cannot slide out of the oil through cavity, one end of the prepressing spring supports the piston sleeve, the other end of the prepressing spring supports the flange of the oil blocking mechanism, the prepressing spring and the oil blocking mechanism cannot slide out of the oil through cavity, the stop block of the lower part can be guaranteed to block the opening at the lower end of the piston sleeve, and the oil in the oil source pipeline is filled in the oil through cavity but cannot flow out through the opening at the lower end of the piston sleeve; when the device is used, a pipeline on a workpiece is inserted from the outside of the opening at the lower end of the piston sleeve, the pipeline pushes the piston sleeve to move upwards relative to the oil through cavity and compresses the pre-pressing spring, so that a gap is reserved between the stop block and the opening at the lower end of the piston sleeve, the oil through cavity is communicated with the pipeline of the workpiece, and oil of an oil source is injected into the workpiece from the oil through cavity; after oil injection is completed, the workpiece pipeline is pulled down, the elasticity of the pre-pressing spring pushes the piston sleeve to move downwards relative to the oil through cavity and to enable the stop block to plug the lower end opening of the spring sleeve, so that the oil cavity is automatically opened, and oil leakage in the sealing joint is prevented.
Specifically, the port of the piston sleeve is a tapered port with the caliber increasing along the direction that the axis of the piston sleeve is directed from the upper piece to the lower piece, the stop block is a tapered stop block with the cross-sectional area increasing along the direction that the axis of the piston sleeve is directed from the upper piece to the lower piece, and the maximum size of the lower part of the tapered stop block is larger than that of the lower part of the tapered port; preferably, a first sealing ring is arranged between the stop block and the conical port.
Specifically, the outside radial inside sunken formation concave ring in piston sleeve port department, establish the second sealing washer in the concave ring.
Preferably, the limiting mechanism comprises an outer sleeve, an inner sleeve and steel balls, the outer sleeve is in clearance fit with the outer part of the lower end of the middle shaft sleeve, the inner sleeve is sleeved on the lower part of a flange of the piston sleeve and is in clearance fit with the inner part of the lower end of the middle shaft sleeve, through holes are circumferentially and uniformly distributed at the lower end of the middle shaft sleeve close to the port, the steel balls are positioned in a space defined by the lower part of the inner sleeve, the through holes and the lower part of the outer sleeve, and inclined planes tangent to the steel balls are arranged at the port parts of the lower part of the inner sleeve and the lower part of the outer sleeve, which are respectively matched with the steel balls; furthermore, the aperture of the through opening is gradually reduced along the axis of the through opening from the inner sleeve to the outer sleeve; after inserting the work piece pipeline into sealing joint, down dialling the overcoat for the piston sleeve, the overcoat extrudees the steel ball, fixes the work piece pipeline through the steel ball, prevents that the work piece pipeline from pushing out sealing joint with the work piece pipeline because of leading to the too big and elasticity of pre-compaction spring of oil intracavity oil pressure at the oiling in-process, and the back is accomplished in the oiling, dials the normal position back with the overcoat, can dial out sealing joint with the work piece pipeline.
Further preferably, the outer portion of the lower end of the middle shaft sleeve is provided with a first step body and a second step body from top to bottom, an inner step hole is formed in the upper end of the outer sleeve, the outer sleeve is in clearance fit with the first step body through the inner step hole, and a front spring is arranged between the inner step body and the second step body.
Preferably, a third sealing ring is arranged between the flange and the middle shaft sleeve.
Furthermore, the oil filling device also comprises a quick-inserting male head sleeved at the upper end of the rear cover, the sealing joint is connected with the oil filling pipeline through the quick-inserting male head, and the quick-inserting male head and the middle shaft sleeve are respectively in threaded connection with the rear cover.
Preferably, a fourth sealing ring is arranged at the contact position of the middle shaft sleeve and the rear cover.
The invention has the beneficial effects that:
when the flared tube self-sealing type sealing joint is connected with a workpiece pipeline, the workpiece pipeline is sequentially inserted from the outside of the opening at the lower end of the piston sleeve, the workpiece pipeline pushes the piston sleeve to move upwards relative to the oil through cavity and compresses the pre-pressing spring, so that a gap is formed between the stop block of the lower piece of the oil blocking mechanism and the opening at the lower end of the piston sleeve, the oil through cavity is communicated, and oil of an oil source is injected into a workpiece from the oil through cavity; after oil injection is completed, the workpiece pipeline is pulled down, the elasticity of the pre-pressing spring pushes the piston sleeve to move downwards relative to the oil through cavity and to enable the stop block to plug the lower end opening of the spring sleeve, so that the oil cavity is automatically opened, and oil leakage in the sealing joint is prevented.
Drawings
FIG. 1 is a schematic view of a flared tube self-sealing joint provided by the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
FIG. 3 is an enlarged view of the point B in FIG. 1;
the quick-inserting type piston assembly comprises a rear cover 1, a middle shaft sleeve 2, a first step body 21, a second step body 22, a piston sleeve 3, a flange 31, an upper piece 4, a through hole 41, a spring supporting flange 42, a lower piece 5, a stop block 51, an outer sleeve 6, an inner step hole 61, an inner sleeve 7, a steel ball 8, a front spring 9, a first sealing ring 10, a second sealing ring 11, a third sealing ring 12, a fourth sealing ring 13, a pre-pressing spring 14 and a quick-inserting male head 15.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
As shown in fig. 1, the embodiment provides a self-sealing type sealing joint for an flared tube, which includes a rear cover 1, a middle shaft sleeve 2 sleeved at the lower end of the rear cover 1, and a quick-insertion male plug 15 sleeved at the upper end of the rear cover 1, wherein the rear cover 1 is axially butted with an inner cavity of the middle shaft sleeve 2 to form an oil passage cavity, and a piston sleeve 3 and an oil blocking mechanism are arranged in the oil passage cavity; a fourth sealing ring 13 is arranged at the contact position of the middle shaft sleeve 2 and the rear cover 1, the piston sleeve 3 is arranged in the middle shaft sleeve 2, one end of the piston sleeve 3 is provided with a flange 31 which is in clearance fit with the inner wall of the middle shaft sleeve 2, a third sealing ring 12 is arranged between the flange 31 and the middle shaft sleeve 2, a limiting mechanism is arranged at the port of the middle shaft sleeve 2, and the piston sleeve 3 axially moves between the rear cover 1 and the limiting mechanism through the flange 31; the oil blocking mechanism comprises an upper piece 4 and a lower piece 5, the upper piece 4 is arranged in the rear cover 1, the upper piece 4 is an inverted cone-shaped cylinder piece, a through hole 42 is formed in the side wall of the inverted cone-shaped cylinder piece, the end wall of the upper end opening of the upper piece 4 extends outwards in the radial direction to form a spring supporting flange 42, a pre-pressing spring 14 is arranged between the spring supporting flange 42 and the flange 31 of the piston sleeve 3, one end of the lower piece 5 is nested at the lower end opening of the upper piece 4, the other end of the lower piece extends to penetrate through a lower port of the piston sleeve 3, and the end of the lower piece 5 penetrating through the lower port of the piston sleeve 3 extends outwards in the radial direction to form a stop block 51, the size of which is larger than that of the lower port of the piston sleeve 3; the limiting mechanism comprises an outer sleeve 6, an inner sleeve 7 and a steel ball 8, the outer sleeve 6 is in clearance fit with the outer part of the lower end of the middle shaft sleeve 2, the inner sleeve 7 is sleeved on the lower part of a flange 31 of the piston sleeve 3 and is in clearance fit with the inner part of the lower end of the middle shaft sleeve 2, through holes are circumferentially and uniformly distributed at the lower end of the middle shaft sleeve 2 close to a port, the calibers of the through holes are gradually reduced along the direction of the axis of the through holes from the inner sleeve 7 to the outer sleeve 6, the steel ball 8 is positioned in a space defined by the lower part of the inner sleeve 7, the through holes and the lower part of the outer sleeve 6, wherein inclined planes tangent to the steel ball 8 are arranged at the port parts of the lower part of the inner sleeve 7 and the lower part of the outer sleeve 6, which are respectively matched with the steel ball 8;
as shown in fig. 2, the port at the lower end of the piston sleeve 3 is a tapered port with the aperture increasing along the direction from the upper piece 4 to the lower piece 5 along the axis thereof, the stop block 51 is a tapered stop block 51 with the cross-sectional area increasing along the direction from the upper piece 4 to the lower piece 5 along the axis thereof, and the maximum size of the lower part of the tapered stop block 51 is larger than that of the lower part of the tapered port; a first sealing ring 10 is arranged between the conical stop block 51 and the conical port; the outer part of the port of the piston sleeve 3 is inwards recessed in the radial direction to form a concave ring, and a second sealing ring 11 is arranged in the concave ring;
as shown in fig. 3, the outer portion of the lower end of the middle shaft sleeve 2 is provided with a first step body 21 and a second step body 22 from top to bottom, an inner step hole 61 is formed in the inner portion of the upper end of the outer sleeve 6, the outer sleeve 6 is in clearance fit with the first step body 21 through the inner step hole 61, and a front spring 9 is arranged between the inner step body and the second step body 22.
The above examples of the present invention are merely illustrative of the present invention and are not intended to limit the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes and modifications of the present invention are within the scope of the present invention.
Claims (9)
1. A self-sealing type sealing joint of an flared tube is characterized by comprising a rear cover and a middle shaft sleeve sleeved at the lower end of the rear cover, wherein the rear cover is axially butted with an inner cavity of the middle shaft sleeve to form an oil through cavity, and a piston sleeve and an oil blocking mechanism are arranged in the oil through cavity; the piston sleeve is arranged in the middle shaft sleeve, one end of the piston sleeve is provided with a flange which is in clearance fit with the inner wall of the middle shaft sleeve, the port of the middle shaft sleeve is provided with a limiting mechanism, and the piston sleeve axially moves between the rear cover and the limiting mechanism through the flange; the oil blocking mechanism comprises an upper piece and a lower piece, the upper piece is arranged in the rear cover, the upper piece is an inverted cone-shaped cylinder piece with a through hole formed in the side wall, the end wall of the opening at the upper end of the upper piece extends outwards in the radial direction to form a spring supporting flange, a pre-pressing spring is arranged between the spring supporting flange and the flange of the piston sleeve, one end of the lower piece is nested at the opening at the lower end of the upper piece, the other end of the lower piece extends to a port penetrating through the lower part of the piston sleeve, and the end part of the lower piece penetrating through the port at the lower part of the piston sleeve extends outwards in the radial direction to form a stop block with the size larger than that of the port at the lower part of the piston sleeve;
stop gear includes overcoat, endotheca, steel ball, overcoat and the outside clearance fit of well axle sleeve lower extreme, the endotheca cup joints in the flange lower part of piston sleeve and with the inside clearance fit of well axle sleeve lower extreme, well axle sleeve lower extreme is close to port department circumference equipartition opening, and the steel ball is located the space that endotheca lower part, opening and overcoat lower part enclose, and wherein, endotheca lower part, overcoat lower part set up the inclined plane tangent with the steel ball with the port department of steel ball adaptation respectively.
2. The flared tube self-sealing joint of claim 1, wherein the port of the piston sleeve is a tapered port having an increasing bore along its axis from the upper piece to the lower piece, and the stop block is a tapered stop block having an increasing cross-sectional area along its axis from the upper piece to the lower piece.
3. The flared tube self-sealing joint of claim 2, wherein a first seal ring is disposed between the stop block and the tapered port.
4. The flared tube self-sealing joint of claim 1, wherein the outer portion of the piston sleeve port is recessed radially inward to form a recessed ring, and a second seal ring is disposed within the recessed ring.
5. The self-sealing flared tube joint of claim 1 wherein the diameter of the port decreases along its axis from the inner sleeve to the outer sleeve.
6. The self-sealing joint of the flared tube as claimed in claim 1, wherein the outer portion of the lower end of the middle shaft sleeve is provided with a first step body and a second step body from top to bottom, the inner portion of the upper end of the outer sleeve is provided with an inner step hole, the outer sleeve is in clearance fit with the first step body through the inner step hole, and a front spring is arranged between the inner step hole and the second step body.
7. The flared tube self-sealing joint as defined in claim 1, wherein a third sealing ring is disposed between the flange and the middle sleeve.
8. The self-sealing joint of the flared tube as claimed in claim 1, further comprising a male quick-insertion head sleeved on the upper end of the rear cover, wherein the male quick-insertion head and the middle shaft sleeve are respectively in threaded connection with the rear cover.
9. The self-sealing joint of the flared tube as claimed in claim 1, wherein a fourth sealing ring is disposed at a contact portion of the middle sleeve and the rear cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384395.2A CN110081251B (en) | 2019-05-09 | 2019-05-09 | Self-sealing type sealing joint of flared tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384395.2A CN110081251B (en) | 2019-05-09 | 2019-05-09 | Self-sealing type sealing joint of flared tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110081251A CN110081251A (en) | 2019-08-02 |
| CN110081251B true CN110081251B (en) | 2021-08-20 |
Family
ID=67419487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910384395.2A Active CN110081251B (en) | 2019-05-09 | 2019-05-09 | Self-sealing type sealing joint of flared tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110081251B (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE344361B (en) * | 1969-03-14 | 1972-04-10 | C Nyberg | |
| SE354702B (en) * | 1971-03-09 | 1973-03-19 | K Nyberg | |
| US3778092A (en) * | 1971-09-20 | 1973-12-11 | Seaton Wilson Inc | Front end loading-self locking female coupling |
| US4597413A (en) * | 1985-06-10 | 1986-07-01 | Snap-Tite, Inc. | Coupling apparatus |
| US4776614A (en) * | 1987-10-30 | 1988-10-11 | Aeroquip Corporation | Coupling with lock indicator |
| JP2732017B2 (en) * | 1993-10-25 | 1998-03-25 | 日東工器株式会社 | Fittings socket |
| JP4273487B2 (en) * | 2003-08-27 | 2009-06-03 | Ｓｍｃ株式会社 | Pipe fitting |
| ITMI20051521A1 (en) * | 2005-08-03 | 2007-02-04 | Stucchi Spa | FEMALE ELEMENT FOR QUICK COUPLING FITTING FOR PIPING |
| CN201162900Y (en) * | 2008-01-23 | 2008-12-10 | 刘堪金 | Self-locking biphase self-sealing joint |
| CN202149310U (en) * | 2011-07-18 | 2012-02-22 | 陈建辉 | Safe and quick connector |
| ITMI20121136A1 (en) * | 2012-06-28 | 2013-12-29 | Alfagomma Do Brasil Ltda | HYDRAULIC OR HYDRAULIC QUICK COUPLING MALE FOR PRESSURE FLUIDS |
| EP2884146B8 (en) * | 2013-12-10 | 2017-04-19 | Faster S.p.A. | Multi-connector device for the multiple quick connection of multiple hydraulic, electrical and/or pneumatic lines, with the possibility of individual manual connectors |
| CN204664687U (en) * | 2015-06-10 | 2015-09-23 | 江西艾克实业有限公司 | A kind of housing of uniting two into one with housing valve seat and pipe joint |
| DE102015222640B4 (en) * | 2015-11-17 | 2021-08-26 | U.M. Gewerbeimmobilien Gmbh & Co. Kg | Coupling element and valve tappet for a coupling for connecting pressure medium lines |
-
2019
- 2019-05-09 CN CN201910384395.2A patent/CN110081251B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110081251A (en) | 2019-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210714569U (en) | Large-section slurry return mandrel hanger and wellhead device | |
| US4907830A (en) | Fluid coupling | |
| GB2068069A (en) | Disconnectible pipe couplings | |
| CN206825325U (en) | Seal coil installing device | |
| CN110081251B (en) | Self-sealing type sealing joint of flared tube | |
| US2832653A (en) | Cylinder assembly | |
| CN208380106U (en) | A kind of vibrator from adopting guiding structure | |
| CN216200586U (en) | Flow regulating valve | |
| CN111578017B (en) | Anti-leakage hose connector | |
| US8596689B2 (en) | Short-body plug for fluid couplings | |
| US1929854A (en) | Coupling | |
| CN208982803U (en) | A kind of tracheae with versatile interface | |
| CN209622303U (en) | Gas piping double containment copper alloy plug component | |
| CN212928376U (en) | Matching structure of oil cylinder guide sleeve and cylinder barrel | |
| CN217815219U (en) | Leakage-proof structure of self-closing device of gas valve | |
| CN216770882U (en) | Sealing joint assembly for pressure gauge | |
| CN216200884U (en) | Negative pressure sealing one-way valve | |
| CN208281374U (en) | Outer ring band guides hub bearing and the outer ring of cylinder | |
| CN211083171U (en) | Connecting and sealing structure of pipe fitting | |
| CN213235012U (en) | Pressure test plugging device | |
| CN117145883B (en) | Anti-overflow grease injection device for outer ball cage and outer ball cage | |
| CN210068046U (en) | Sucker rod stuffing box | |
| TWI820821B (en) | Valve connector of high pressure air pump | |
| CN220566828U (en) | Anti-leakage quick connector | |
| CN108591794B (en) | Quick oiling frock of bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |