CN111677871A - Double-channel three-level series-parallel rotary transmission mechanical sealing device - Google Patents
Double-channel three-level series-parallel rotary transmission mechanical sealing device Download PDFInfo
- Publication number
- CN111677871A CN111677871A CN202010553134.1A CN202010553134A CN111677871A CN 111677871 A CN111677871 A CN 111677871A CN 202010553134 A CN202010553134 A CN 202010553134A CN 111677871 A CN111677871 A CN 111677871A
- Authority
- CN
- China
- Prior art keywords
- ring
- shell
- mechanical sealing
- channel
- inner ring
- 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.)
- Granted
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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a double-channel three-stage series-parallel rotary transmission mechanical sealing device, which relates to the technical field of mechanical dynamic sealing and specifically comprises a shell and an inner ring, wherein a bearing is fixedly connected to the inner wall of the shell, a mechanical sealing pair is movably connected to the inner wall of the shell, the inner ring is fixedly connected to the inside of the bearing, the mechanical sealing pair is movably sleeved on the side surface of the inner ring, a liquid inlet cavity is formed in the side surface of the shell, a liquid return cavity is formed in the inner wall of the shell, the number of the bearings is two, and the two bearings are respectively and fixedly connected to the positions, located at the topmost part and the bottommost. Through setting up inner ring, shell and mechanical seal pair, reached also can the perfect sealed effect under adverse circumstances, solved ceramic mechanical seal and born the problem of adverse circumstances such as temperature impact, wide temperature range and mechanical vibration impact.
Description
Technical Field
The invention relates to a mechanical dynamic seal, in particular to a double-channel three-stage series-parallel rotary transmission mechanical seal device.
Background
The mechanical seal is a device for preventing fluid leakage, which is formed by keeping fit and relative sliding of at least one pair of end faces perpendicular to a rotation axis under the action of fluid pressure and a compensation mechanism (or magnetic force) and the cooperation of auxiliary seal. Under the environmental conditions of temperature impact, wide temperature range and mechanical vibration impact, the ceramic seal has the problem of easy stress damage, and meanwhile, the product design direction also tends to have large flow, small volume and high environmental adaptability.
The stability of the mechanical sealing ring in the operation process is an important factor influencing the stability of the mechanical sealing ring, and the method for improving the structural rigidity, the rotation supporting rigidity and the rotation precision of the sealing device is the most effective method.
The rigidity of the ceramic ring is an important parameter influencing the mechanical sealing performance, and the increase of the height of the ceramic ring is an effective method for improving the rigidity, but the increase of the height of the ceramic ring can reduce the flow area and flow of liquid and directly influence the cooling effect of equipment.
The invention adopts the least three-level series-parallel mechanical sealing structure for the first time to form the double-channel liquid rotary transmission device. The three-stage ceramic sealing assembly is adopted to form two independent closed cavities with rotary dynamic seals at the boundaries, so that rotary fluid transmission is realized, and the height and the rigidity of the ceramic ring are improved on the premise of realizing the same flow area and flow rate.
The device shell and the inner ring are of an integral, split or combined structure, a high-rigidity supporting piece is formed on the premise of being convenient to machine and form, the rigidity of the whole device is improved, the stability of the mechanical dynamic seal in the operation process is guaranteed, a bearing capable of eliminating gaps is used as a rotary support of the mechanical sealing device and a back-to-back matching installation mode, the rigidity of the rotary support is improved, and the structural piece is made of corrosion-resistant materials such as stainless steel and titanium alloy, so that the problem of environmental adaptability of the mechanical sealing device under severe conditions such as temperature impact, wide temperature range, mechanical vibration impact and salt mist is solved, and the service life and the reliability of the dynamic seal are improved.
At present, no related report exists in China about a double-channel three-stage series-parallel rotary transmission mechanical sealing device with high reliability and long service life under severe environmental conditions such as temperature impact, wide temperature range, mechanical vibration impact and the like.
Disclosure of Invention
The invention aims to provide a double-channel three-stage series-parallel rotary transmission mechanical sealing device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a rotatory transmission mechanical seal device of tertiary series-parallel of binary channels, includes shell and inner ring, the inner wall fixedly connected with bearing of shell, the inner wall swing joint of shell have mechanical seal vice, and inner ring fixed connection is in the inside of bearing, and the vice activity of mechanical seal cup joints the side at the inner ring, and the feed liquor chamber has been seted up to the side of shell, and the inner wall of shell has been seted up back the liquid chamber.
As a further scheme of the invention: the number of the bearings is two, and the two bearings are fixedly connected to the positions, located at the topmost and bottommost parts, of the inner wall of the shell respectively.
As a further scheme of the invention: the mechanical seal pair comprises a narrow ring and a wide ring, and one side of the narrow ring is movably connected with one side of the wide ring.
As a further scheme of the invention: the shell and the inner ring can adopt an integral, split or combined structure form.
As a further scheme of the invention: the shell and the inner ring can be made of corrosion-resistant materials such as stainless steel, titanium alloy, aluminum alloy and the like.
As a further scheme of the invention: the number of the mechanical sealing pairs is three, and the three mechanical sealing pairs are uniformly movably connected in the shell.
As a further scheme of the invention: the narrow ring is of an integral structure.
As a further scheme of the invention: and a chamfer is arranged on the surface of the metal base of the wide ring.
As a further scheme of the invention: and two ends of the mechanical sealing pair adopt bearing rotating supporting pieces capable of eliminating gaps.
As a still further scheme of the invention: the operation steps are as follows:
the method comprises the following steps of firstly, installing the device at a position needing to be sealed on a relevant machine;
the inner ring and the shell rotate relatively, the wide ring and the shell are connected into a whole, and the narrow ring and the inner ring are in floating connection;
and step three, the wide ring and the narrow ring rotate relative to the outer shell and the inner ring, and the joint planes of the wide ring and the narrow ring are always kept jointed, so that the fluid is sealed in the cavity, and the rotary dynamic sealing of the fluid is realized.
Compared with the prior art, the invention has the beneficial effects that:
1. through setting up the inner ring, shell and mechanical seal are vice, inner ring and shell form relative rotation, wide ring and shell are even as an organic whole, the narrow ring floats with the inner ring and is connected, wide ring and narrow ring are both followed shell and inner ring relative rotation, the plane of both laminating remains the laminating throughout, thereby seal the fluid in the cavity, mechanical seal through tertiary setting is vice to realize fluidic rotatory dynamic seal, the effect that also can perfect seal under adverse circumstances has been reached, the problem that ceramic mechanical seal bears adverse circumstances such as temperature impact, wide temperature range and mechanical vibration are strikeed.
2. The mechanical sealing pair is made of ceramic, the shell and the inner ring are made of corrosion-resistant high-strength materials, the service life of the mechanical sealing pair is prolonged, and through tests, the service life can reach 5 ten thousand hours or 10 years.
Drawings
Fig. 1 is an overall structural schematic diagram of a double-channel three-stage series-parallel rotary transmission mechanical sealing device.
Fig. 2 is a schematic view of an internal structure of a double-channel three-stage series-parallel rotary transmission mechanical sealing device.
Fig. 3 is a schematic view of a mechanical seal ring structure in a dual-channel three-stage series-parallel rotary transmission mechanical seal device.
Fig. 4 is a structural outline diagram of a wide ring position in the double-channel three-stage series-parallel rotary transmission mechanical sealing device.
As shown in the figure: 1. a mechanical seal pair; 2. an inner ring; 3. a housing; 4. a liquid inlet cavity; 5. a liquid return cavity; 6. and a bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 4, in the embodiment of the present invention, a dual-channel three-stage series-parallel rotary transmission mechanical sealing device includes a housing 3 and an inner ring 2, the inner ring 2 is rotatably connected to the housing 3 through a support bearing, a fluid flow channel is further designed inside the inner ring 2, processes such as casting, welding, machining and the like are adopted to solve the difficulty of rigidity of a rigid structural member and manufacturing of a complex flow channel, the housing 3 and the inner ring 2 can be in an integral, split or combined structural form, the housing 3 and the inner ring 2 can be made of corrosion resistant materials such as stainless steel, titanium alloy, aluminum alloy and the like, the inner wall of the housing 3 is fixedly connected with two bearings 6, the two bearings 6 are respectively fixedly connected to the inner wall of the housing 3 at the top and bottom positions, the inner wall of the housing 3 is movably connected with a mechanical sealing pair 1, which is a key component of the device, the dynamic sealing reliability and the service life of the device are directly influenced, the number of the mechanical sealing pairs 1 is three, the three mechanical sealing pairs 1 are uniformly and movably connected inside the shell 3, each mechanical sealing pair 1 comprises a narrow ring 101 and a wide ring 102, one side of each narrow ring 101 is movably connected with one side of each wide ring 102, each narrow ring 101 is of an integral structure, elastic compensation elements such as cylindrical springs, wave springs and cylindrical spring groups are arranged at the bottom of each narrow ring 101 and are used as pre-compression elements for matching the mechanical sealing pairs 1 and height compensation elements after the narrow rings 101 are worn, the mechanical sealing pairs 1 can be kept in fit under any working condition, the narrow rings 1 are of an integral structure, peripheral metal bases are removed, the problem of heated extrusion caused by the difference of thermal expansion coefficients of ceramics and metals is avoided, static sealing links are reduced, the sealing reliability is improved, chamfers are arranged on the surfaces of the metal bases of the wide rings 102, a chamfer is added on a mounting base of a wide ring 102, on the premise of not influencing structural rigidity and strength, the flow area of fluid is increased, a sharp edge is changed into a gradual transition structure after the chamfer is increased, the parameter turbulence phenomenon of the fluid in the flowing process is reduced, flow resistance is reduced, the weight of a structural part is reduced, the specific rigidity of the structural part is improved, bearing rotating supporting parts capable of eliminating gaps are adopted at two ends of a mechanical sealing pair 1, a bearing with higher rotating supporting rigidity, capable of eliminating gaps and smaller friction torque is adopted as a rotating support at the two ends, a back-to-back matching assembly structure is adopted, the rotating supporting rigidity is improved, the stability of the mechanical sealing pair 1 in the operation process is ensured, an inner ring 2 is fixedly connected inside a bearing 6, the mechanical sealing pair 1 is movably sleeved on the side surface of the inner ring 2, a liquid inlet cavity 4 is arranged on the side surface of a shell 3, a liquid return cavity 5 is, the division and the external dynamic sealing of the liquid inlet cavity 4 and the liquid return cavity 5 are realized by the least pairs of mechanical sealing pairs 1, so that the structure size of the ceramic ring is increased, the rigidity of the ceramic ring is improved, under the condition that the volume and the overall dimension of the device are not changed, the through flow area and the flow are increased to the maximum extent, the liquid inlet cavity 4 and the liquid return cavity 5 are divided by using a pair of ceramic rings, the external leakage is changed into the system internal leakage, the possibility of the external leakage of the device is reduced, the liquid inlet cavity 4 and the liquid return cavity 5 are divided by using a pair of ceramic rings, the pressure difference of two sides of the mechanical sealing pair 1 made of ceramics is reduced, the reliability of the dynamic sealing is improved, the three pairs of mechanical sealing pairs 1 are vertically distributed from top to bottom, a three-stage mixed connection structure with upper and lower independent closed cavities is formed:
the method comprises the following steps of firstly, installing the device at a position needing to be sealed on a relevant machine;
step two, the inner ring 2 and the outer shell 3 rotate relatively, the wide ring 102 and the outer shell 3 are connected into a whole, and the narrow ring 101 and the inner ring 2 are connected in a floating mode;
and step three, the wide ring 102 and the narrow ring 101 rotate relatively along with the shell 3 and the inner ring 2, and the joint planes of the wide ring 102 and the narrow ring are always kept jointed, so that the fluid is sealed in the cavity, and the rotary dynamic sealing of the fluid is realized.
When the sealing device is used, when the inner ring and the outer ring rotate relatively, the wide ring is connected with the shell into a whole, the narrow ring 101 is in floating connection with the inner ring 2, the wide ring 102 and the narrow ring 101 rotate relatively with the wide ring, a cavity formed between the inner ring 2 and the shell 3 is a fluid flow channel, and fluid exists in the cavity and is not influenced by the relative rotation of the inner ring 2 and the shell 3, so that the rotary transmission of the fluid is realized, the sealing ring of the mechanical sealing pair 1 made of ceramics is a dynamic sealing element, the compensation spring is an elastic element which ensures that the mechanical sealing pair 1 made of ceramics is always attached and is also a compensation element after the narrow ring 101 is abraded, and planes attached by the two always keep attached, so that the fluid is sealed in the liquid return cavity 5, the rotary dynamic sealing of the fluid is realized, and the effect of rotary sealing is achieved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a rotatory transmission mechanical seal device of tertiary series-parallel of binary channels, includes shell (3) and inner ring (2), its characterized in that, the inner wall fixedly connected with bearing (6) of shell (3), the inner wall swing joint of shell (3) has mechanical seal pair (1), and inner ring (2) fixed connection is in the inside of bearing (6), and mechanical seal pair (1) activity is cup jointed in the side of inner ring (2), and feed liquor chamber (4) have been seted up to the side of shell (3), and liquid return chamber (5) have been seted up to the inner wall of shell (3).
2. The double-channel three-stage series-parallel rotary transmission mechanical sealing device as claimed in claim 1, wherein the number of the bearings (6) is two, and the two bearings (6) are respectively fixedly connected to the topmost and bottommost positions of the inner wall of the housing (3).
3. The double-channel three-stage series-parallel rotary transmission mechanical sealing device as claimed in claim 1, wherein the mechanical sealing pair (1) comprises a narrow ring (101) and a wide ring (102), and one side of the narrow ring (101) is movably connected with one side of the wide ring (102).
4. The double-channel three-stage series-parallel rotary transmission mechanical sealing device as claimed in claim 1, wherein the outer shell (3) and the inner ring (2) can be in an integral, split or combined structure.
5. The double-channel three-stage series-parallel rotary transmission mechanical sealing device as claimed in claim 1, wherein the outer shell (3) and the inner ring (2) are made of corrosion-resistant materials such as stainless steel, titanium alloy and aluminum alloy.
6. The double-channel three-stage series-parallel rotary transmission mechanical sealing device as claimed in claim 1, wherein the number of the mechanical sealing pairs (1) is three, and the three mechanical sealing pairs (1) are uniformly movably connected inside the shell (3).
7. A double channel three stage series-parallel rotary transmission mechanical seal according to claim 3, characterized in that said narrow ring (101) is of unitary construction.
8. The double channel three stage series-parallel rotary transmission mechanical seal device according to claim 3, characterized in that the surface of the metal base of the wide ring (102) is provided with a chamfer.
9. The double-channel three-stage series-parallel rotation transmission mechanical sealing device as claimed in claim 1, wherein both ends of the mechanical sealing pair (1) adopt anti-backlash bearing rotation supporting pieces.
10. The dual channel three-stage series-parallel rotary transmission mechanical seal device according to claim 1, wherein the operation steps are as follows:
the method comprises the following steps of firstly, installing the device at a position needing to be sealed on a relevant machine;
step two, the inner ring (2) and the outer shell (3) rotate relatively, the wide ring (102) and the outer shell (3) are connected into a whole, and the narrow ring (101) is connected with the inner ring (2) in a floating mode;
and step three, the wide ring (102) and the narrow ring (101) rotate relative to the outer shell (3) and the inner ring (2), and the joint planes of the wide ring and the narrow ring are always jointed, so that the fluid is sealed in the cavity, and the rotary dynamic sealing of the fluid is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010553134.1A CN111677871B (en) | 2020-06-17 | 2020-06-17 | Mechanical sealing device for double-channel three-stage series-parallel rotary transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010553134.1A CN111677871B (en) | 2020-06-17 | 2020-06-17 | Mechanical sealing device for double-channel three-stage series-parallel rotary transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111677871A true CN111677871A (en) | 2020-09-18 |
| CN111677871B CN111677871B (en) | 2023-08-29 |
Family
ID=72436005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010553134.1A Active CN111677871B (en) | 2020-06-17 | 2020-06-17 | Mechanical sealing device for double-channel three-stage series-parallel rotary transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111677871B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683101A (en) * | 2022-04-29 | 2022-07-01 | 中国电子科技集团公司第十四研究所 | Forming method of fluid rotary joint rotating shaft |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1104896A (en) * | 1965-12-21 | 1968-03-06 | Robert Martin Voitik | Fluid seal |
| US3888495A (en) * | 1972-06-09 | 1975-06-10 | Ehrhard Mayer | Dual-cooled slide ring seal |
| JPH10159714A (en) * | 1996-12-03 | 1998-06-16 | Keihin Corp | Swash plate type pump |
| CN201547429U (en) * | 2009-11-13 | 2010-08-11 | 四川日机密封件股份有限公司 | Double-channel rotatable water joint device |
| CN202493825U (en) * | 2012-03-21 | 2012-10-17 | 北京航天星汉科技有限公司 | Flexible sealing water joint |
| CN202710746U (en) * | 2012-03-21 | 2013-01-30 | 北京航天星汉科技有限公司 | Water hinge sealed by machinery end face |
| CN202812562U (en) * | 2012-09-29 | 2013-03-20 | 北京航天星汉科技有限公司 | Self-adjusting type machine end face sealed water hinge |
| CN206398087U (en) * | 2016-12-31 | 2017-08-11 | 宁波伏尔肯陶瓷科技有限公司 | A kind of oil pump mechanical sealing device of silicon carbide |
| CN206571970U (en) * | 2017-03-22 | 2017-10-20 | 山东济炼石化工程有限公司 | A kind of mechanical seal hinders the sealing liquid circulatory system |
| CN107420674A (en) * | 2017-05-31 | 2017-12-01 | 中国工程物理研究院总体工程研究所 | High performance multi-channel water swivel joint |
| CN108240351A (en) * | 2016-12-23 | 2018-07-03 | 南京金能新型材料制造厂 | Packaging type cools down anhydrous mechanical seal certainly |
| CN109000062A (en) * | 2018-09-06 | 2018-12-14 | 中国电子科技集团公司第三十八研究所 | A kind of binary channels liquid in rotation joint |
| CN210372013U (en) * | 2019-06-06 | 2020-04-21 | 密友集团有限公司 | Mechanical sealing device suitable for multiple working conditions |
-
2020
- 2020-06-17 CN CN202010553134.1A patent/CN111677871B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1104896A (en) * | 1965-12-21 | 1968-03-06 | Robert Martin Voitik | Fluid seal |
| US3888495A (en) * | 1972-06-09 | 1975-06-10 | Ehrhard Mayer | Dual-cooled slide ring seal |
| JPH10159714A (en) * | 1996-12-03 | 1998-06-16 | Keihin Corp | Swash plate type pump |
| CN201547429U (en) * | 2009-11-13 | 2010-08-11 | 四川日机密封件股份有限公司 | Double-channel rotatable water joint device |
| CN202493825U (en) * | 2012-03-21 | 2012-10-17 | 北京航天星汉科技有限公司 | Flexible sealing water joint |
| CN202710746U (en) * | 2012-03-21 | 2013-01-30 | 北京航天星汉科技有限公司 | Water hinge sealed by machinery end face |
| CN202812562U (en) * | 2012-09-29 | 2013-03-20 | 北京航天星汉科技有限公司 | Self-adjusting type machine end face sealed water hinge |
| CN108240351A (en) * | 2016-12-23 | 2018-07-03 | 南京金能新型材料制造厂 | Packaging type cools down anhydrous mechanical seal certainly |
| CN206398087U (en) * | 2016-12-31 | 2017-08-11 | 宁波伏尔肯陶瓷科技有限公司 | A kind of oil pump mechanical sealing device of silicon carbide |
| CN206571970U (en) * | 2017-03-22 | 2017-10-20 | 山东济炼石化工程有限公司 | A kind of mechanical seal hinders the sealing liquid circulatory system |
| CN107420674A (en) * | 2017-05-31 | 2017-12-01 | 中国工程物理研究院总体工程研究所 | High performance multi-channel water swivel joint |
| CN109000062A (en) * | 2018-09-06 | 2018-12-14 | 中国电子科技集团公司第三十八研究所 | A kind of binary channels liquid in rotation joint |
| CN210372013U (en) * | 2019-06-06 | 2020-04-21 | 密友集团有限公司 | Mechanical sealing device suitable for multiple working conditions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683101A (en) * | 2022-04-29 | 2022-07-01 | 中国电子科技集团公司第十四研究所 | Forming method of fluid rotary joint rotating shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111677871B (en) | 2023-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109139927B (en) | Foil end face air film sealing structure with enhanced circumferential flow opening performance | |
| CN111677871A (en) | Double-channel three-level series-parallel rotary transmission mechanical sealing device | |
| CN106286842B (en) | A kind of horizontal reactor axle end sealing device | |
| CN201412620Y (en) | Floating sealed high-speed high-pressure rotary joint | |
| CN207667851U (en) | A kind of high-pressure water jet rotary body of high lubricity | |
| CN216199864U (en) | High-strength graphite air bearing | |
| CN111677872B (en) | Double-channel radial distributed expandable mechanical sealing device | |
| CN213954522U (en) | Engineering machine tool valve body assembly with dustproof structure | |
| CN212804703U (en) | High-pressure high-speed rotary sealing device for engineering machinery | |
| CN216143173U (en) | Double-end-face mechanical seal for rotary evaporator | |
| CN219918688U (en) | Magnetic coupling driver | |
| CN212718134U (en) | Ball valve with pipe-forged combined valve body | |
| CN219911755U (en) | Pneumatic bellows sealing stop valve | |
| CN220185850U (en) | Valve body convenient to maintain | |
| CN220101601U (en) | Mechanical seal composite open-cell foam medium sealing ring structure of turbine pump | |
| CN220396478U (en) | Deformation-resistant bellows type mechanical seal | |
| CN216242293U (en) | Novel mechanical seal | |
| CN219933296U (en) | Single-direction and two-direction inner pipe rotary joint | |
| CN215720835U (en) | Radial double-end-face fulcrum type mechanical seal special for integrated stirring | |
| CN212360781U (en) | Mechanical sealing element convenient to change sealing ring | |
| CN217633863U (en) | Split type dicyclo oil blanket device | |
| CN211315201U (en) | Eccentric ball valve | |
| CN215521974U (en) | Double-end-face dry-grinding-resistant mechanical sealing structure for reaction kettle | |
| CN216843113U (en) | Horizontal axial float mechanical seal | |
| CN214998245U (en) | High-temperature high-pressure high-speed chemical pump |
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 |