CN108980491B - Damping formula rotary joint structure - Google Patents
Damping formula rotary joint structure Download PDFInfo
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- CN108980491B CN108980491B CN201811098218.XA CN201811098218A CN108980491B CN 108980491 B CN108980491 B CN 108980491B CN 201811098218 A CN201811098218 A CN 201811098218A CN 108980491 B CN108980491 B CN 108980491B
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- sleeve
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- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
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- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to the technical field of rotary joints, and discloses a vibration damping type rotary joint structure which comprises a shell and a rotary sleeve, wherein a rotary cavity is arranged at the upper end of the shell, the lower end of the rotary sleeve extends into the rotary cavity, the upper end of the rotary sleeve extends out of a joint body, an end cover is arranged at the opening end of the rotary cavity, a limiting convex ring is arranged on the outer side of the rotary sleeve, the limiting convex ring and the rotary cavity form clearance fit, an annular groove is arranged on the circumferential surface of the limiting convex ring, and a sealing ring A is arranged in the annular groove; the position between the upper end of the limiting convex ring and the end cover is provided with a bearing, a pressure spring is arranged between the lower end of the limiting convex ring and the bottom surface of the rotating cavity, the center of the bottom surface of the rotating cavity is provided with a flow guide hole, the lower end of the shell is provided with a liquid outlet channel which is transversely communicated, the flow guide hole is communicated with the middle side surface of the liquid outlet channel, and two ends of the shell, which are positioned on the liquid outlet channel, are provided with interfaces. The invention has good vibration damping performance, can effectively relieve axial and radial vibration and prolongs the whole service life.
Description
Technical Field
The invention relates to the technical field of rotary joints, in particular to a vibration reduction type rotary joint structure.
Background
The rotary joint is a connecting part used for conveying media from a static pipeline to a rotary pipeline, and is particularly widely applied to industries such as metallurgy, ship lifting, chemical engineering, pharmacy and the like. Because rotary joint's shell is all in static usually, and rotary part is connected with outside rotary pipeline, must produce the vibration when outside pipeline is high-speed rotatory, thereby make to take place radially between the rotary part in the rotary joint and rotary joint's the shell, axial beat, all set up the sealing washer between rotary part in the rotary joint and the shell usually, the sealing washer can be suitable for small runout, however be tight fit between the axial of rotary part and shell, can't produce relative displacement, consequently, axial beat can't be overcome, rotary part produces a great axial vibration power to between the casing when rotatory, this vibration power can produce a frequent impact force to the shell, and then can reduce rotary joint's whole life.
For example: chinese patent application publication No. CN105793631A discloses a rotary joint, and chinese patent application publication No. CN104279385A discloses a high-sealing rotary joint, in which there is no vibration damping performance between the rotating part and the housing in the axial direction, and when the rotating part vibrates, the rotating part frequently generates rigid impact with the housing, which seriously affects the service life of the rotary joint.
Disclosure of Invention
In order to solve the problems of the rotary joint in the prior art, the invention provides a vibration reduction type rotary joint structure which can effectively relieve axial vibration impact caused by a rotary sleeve, and further improves the overall stability and prolongs the service life.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vibration damping type rotary joint structure comprises a shell and a rotary sleeve, wherein a rotary cavity is arranged at the upper end of the shell, the lower end of the rotary sleeve extends into the rotary cavity, the upper end of the rotary sleeve extends out of a joint body, an end cover is arranged at the opening end of the rotary cavity, a limiting convex ring is arranged on the outer side of the rotary sleeve, the limiting convex ring and the rotary cavity form clearance fit, an annular groove is formed in the circumferential surface of the limiting convex ring, and a sealing ring A is arranged in the annular groove; the position between the upper end of the limiting convex ring and the end cover is provided with a bearing, a pressure spring is arranged between the lower end of the limiting convex ring and the bottom surface of the rotating cavity, the center of the bottom surface of the rotating cavity is provided with a flow guide hole, the lower end of the shell is provided with a liquid outlet channel which is transversely communicated, the flow guide hole is communicated with the middle side surface of the liquid outlet channel, and two ends of the shell, which are positioned at the liquid outlet channel, are provided with connectors. The outer end of the rotating sleeve is connected with a rotating pipeline, the rotating pipeline can vibrate when rotating, and then the rotating sleeve can generate irregular axial and radial runout, and the gap between the limiting convex ring and the rotating cavity is matched and sealed by the sealing ring A, so that the gap can be used for relieving the radial runout; because the rotating sleeve can slide relatively between the axial direction and the rotating cavity, the impact caused by axial vibration (jumping) can be greatly weakened, and the impact force between the rotating sleeve and the shell is reduced, thereby protecting the whole rotary joint; and because relative displacement exists between the rotating sleeve and the shell, the requirement of installation precision can be reduced during installation, and even if the length dimension of the rotating pipeline has large error, the rotating pipeline can be stably connected with the rotating sleeve.
As preferred, the bottom surface that rotates the chamber is equipped with the cavity, the side of cavity is big-end-up's lower conical surface, the lower extreme of rotating the cover extends and forms the uide bushing, the outside of uide bushing is equipped with the sliding sleeve, sliding connection between sliding sleeve and the uide bushing, be equipped with sealing washer B between sliding sleeve and the uide bushing, the lower extreme of sliding sleeve is equipped with the last conical surface with lower conical surface complex, be equipped with supplementary pressure spring between the upper end of sliding sleeve and the lower extreme of rotating the cover. The sealing ring has a primary sealing function, and the sealing ring A has a secondary sealing function, so that the medium in the rotary joint is prevented from leaking; and the two-stage vibration reduction of the pressure spring and the auxiliary pressure spring is adopted, so that the vibration reduction effect is better.
Preferably, the upper end of the sliding sleeve is provided with a lower pressure spring limiting groove, the lower end of the rotating sleeve is provided with an upper pressure spring limiting groove, the upper end of the auxiliary pressure spring is located in the upper pressure spring limiting groove, and the lower end of the auxiliary pressure spring is located in the lower pressure spring limiting groove. The lower limiting groove and the upper limiting groove of the pressure spring are used for positioning the auxiliary pressure spring.
Preferably, a dustproof retainer ring is arranged between the inner end of the end cover and the bearing. Dustproof retaining ring can prevent on the one hand that outside dust from getting into in the bearing, and on the other hand can prevent that the lubricating oil in the bearing from volatilizing.
Preferably, a plurality of parallel mesh partition plates are arranged in an inner hole of the rotating sleeve, an isolation support ring is arranged between every two adjacent mesh partition plates, a limiting check ring is arranged on the inner side of the upper end of the rotating sleeve, and the limiting check ring is in threaded connection with the inner hole of the rotating sleeve. The medium can be depressurized through the mesh partition plates, and the gradual depressurization of the medium is realized through the plurality of mesh partition plates.
Preferably, a cylindrical cavity is formed in the center of the liquid outlet channel in the shell, a cylindrical rotating block is arranged in the cylindrical cavity, a T-shaped channel is formed in the rotating block, an opening A, an opening B and an opening C which are communicated with each other are formed in the T-shaped channel, a sealing cover is arranged at the upper end of the cylindrical cavity, a rotating shaft penetrating through the sealing cover is fixed at the upper end of the rotating block, a rotating handle is arranged at the outer end of the rotating shaft, and a T-shaped mark is arranged on the rotating handle. The rotating handle drives the rotating block to rotate so as to realize the reversing, the on-off, the shunting and the like of the medium, and the use is very convenient.
Preferably, the circumferential surface of the rotating block is provided with sealing rings C at the upper side and the lower side of the T-shaped channel, and the circumferential surface of the rotating block is provided with sealing rings D at the outer sides of the port A, the port B and the port C.
Preferably, a pin shaft penetrating through the bottom of the cylindrical cavity and extending out of the shell is fixed at the lower end of the rotating block, a pressing sleeve is arranged on the pin shaft and connected with the pin shaft through a spline, a limiting seat is arranged on the shell and positioned on the outer side of the pressing sleeve, the top end of the pressing sleeve extends out of the limiting seat, and a reset pressure spring is arranged between the outer end of the pin shaft and the inner bottom surface of the pressing sleeve; the inner bottom surface of the limiting seat is provided with four limiting holes which are uniformly distributed along the circumferential direction, the outer side surface of the pressing sleeve is provided with a limiting flange, and limiting pins which correspond to the four limiting holes one by one are arranged on the limiting flange. When the medium flow direction needs to be changed, the left hand presses down the pressing sleeve, so that the limiting pin is separated from the limiting hole, the rotating handle is rotated by 90 degrees or 180 degrees by the right hand according to needs, the left hand is loosened, the limiting pin enters the corresponding limiting hole to be limited at the moment, and the rotating block is prevented from rotating accidentally.
Therefore, the invention has the following beneficial effects: (1) the vibration damping material has good vibration damping performance, can effectively relieve axial and radial vibration, and improves the overall service life; (2) the pressure of the medium can be reduced, so that the pressure of the medium flowing out through the rotary joint is reduced; (3) the medium can be shunted, reversed and controlled on-off, and the operation is convenient and stable.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a rear view of fig. 1.
Fig. 3 is a cross-sectional view of fig. 1.
Fig. 4 is a schematic structural view of the rotating sleeve.
Fig. 5 is a schematic view of the connection of the turning block and the housing.
Fig. 6 is a partially enlarged view of a portion a in fig. 5.
FIG. 7 is a schematic view showing the left end of the liquid outlet channel being closed and the right end being in a liquid outlet state.
FIG. 8 is a schematic view showing a state where the left end and the right end of the liquid outlet channel are closed.
FIG. 9 is a schematic view showing a state where both left and right ends of the liquid outlet channel are closed.
In the figure: the device comprises a shell 1, a rotating sleeve 2, a guide sleeve 200, a rotating cavity 3, an end cover 4, a limiting convex ring 5, an annular groove 6, a sealing ring A7, a bearing 8, a dustproof retainer ring 9, a pressure spring 10, a diversion hole 11, a liquid outlet channel 12, a connector 13, a cavity 14, a sliding sleeve 15, a sealing ring B16, an auxiliary pressure spring 17, a pressure spring lower limiting groove 18, a pressure spring upper limiting groove 19, a mesh partition plate 20, an isolation support ring 21, a limiting retainer ring 22, a cylindrical cavity 23, a rotating block 24, a T-shaped channel 25, an A port 26, a B port 27, a C port 28, a sealing cover 29, a rotating shaft 30, a rotating handle 31, a sealing ring C32, a sealing ring D33, a pin shaft 34, a pressing sleeve 35, a limiting seat 36, a resetting pressure spring 37, a limiting.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1, 2 and 3, the vibration damping rotary joint structure comprises a shell 1 and a rotary sleeve 2, wherein a rotary cavity 3 is arranged at the upper end of the shell, the lower end of the rotary sleeve extends into the rotary cavity, the upper end of the rotary sleeve extends out of a joint body, an end cover 4 is arranged at the opening end of the rotary cavity, a limiting convex ring 5 is arranged at the outer side of the rotary sleeve, the limiting convex ring and the rotary cavity form clearance fit, an annular groove 6 is arranged on the circumferential surface of the limiting convex ring, and a sealing ring A7 is arranged in the annular groove; the position between the upper end of the limiting convex ring and the end cover is provided with a bearing 8, a dustproof retainer ring 9 is arranged between the inner end of the end cover and the bearing, a pressure spring 10 is arranged between the lower end of the limiting convex ring and the bottom surface of the rotating cavity, the center of the bottom surface of the rotating cavity is provided with a flow guide hole 11, the lower end of the shell is provided with a liquid outlet channel 12 which is transversely communicated, the flow guide hole is communicated with the middle side surface of the liquid outlet channel, and the two ends of the shell, which are positioned on the liquid.
As shown in fig. 3 and 4, a concave cavity 14 is formed in the bottom surface of the rotating cavity, the side surface of the concave cavity is a lower conical surface with a large upper part and a small lower part, the lower end of the rotating sleeve 2 extends to form a guide sleeve 200, a sliding sleeve 15 is arranged on the outer side of the guide sleeve, the sliding sleeve and the guide sleeve are connected in a sliding manner, a sealing ring B16 is arranged between the sliding sleeve and the guide sleeve, an upper conical surface matched with the lower conical surface is arranged at the lower end of the sliding sleeve, and an auxiliary pressure spring 17 is arranged between the upper end of the; the upper end of the sliding sleeve is provided with a pressure spring lower limiting groove 18, the lower end of the rotating sleeve is provided with a pressure spring upper limiting groove 19, the upper end of the auxiliary pressure spring is positioned in the pressure spring upper limiting groove, and the lower end of the auxiliary pressure spring is positioned in the pressure spring lower limiting groove.
A plurality of parallel mesh baffles 20 are arranged in the inner hole of the rotating sleeve 2, an isolation support ring 21 is arranged between every two adjacent mesh baffles, a limit check ring 22 is arranged on the inner side of the upper end of the rotating sleeve, and the limit check ring is in threaded connection with the inner hole of the rotating sleeve.
As shown in fig. 5, a cylindrical cavity 23 is arranged at the center of the liquid outlet channel in the shell, a cylindrical rotating block 24 is arranged in the cylindrical cavity, a T-shaped channel 25 is arranged in the rotating block, the T-shaped channel is provided with an a port 26, a B port 27 and a C port 28 which are mutually communicated, a sealing cover 29 is arranged at the upper end of the cylindrical cavity, a rotating shaft 30 penetrating through the sealing cover is fixed at the upper end of the rotating block, a rotating handle 31 is arranged at the outer end of the rotating shaft, and a T-shaped mark is arranged on the rotating handle; and sealing rings C32 are arranged on the upper side and the lower side of the T-shaped channel on the circumferential surface of the rotating block, and sealing rings D33 are arranged on the outer sides of the port A, the port B and the port C on the circumferential surface of the rotating block.
As shown in fig. 6, a pin shaft 34 penetrating through the bottom of the cylindrical cavity and extending out of the housing is fixed at the lower end of the rotating block 24, a pressing sleeve 35 is arranged on the pin shaft, the pressing sleeve and the pin shaft are connected through a spline, a limiting seat 36 is arranged on the housing and positioned on the outer side of the pressing sleeve, the top end of the pressing sleeve extends out of the limiting seat, and a reset pressure spring 37 is arranged between the outer end of the pin shaft and the inner bottom surface of the pressing sleeve; the inner bottom surface of the limiting seat is provided with four limiting holes 38 which are uniformly distributed along the circumferential direction, the outer side surface of the pressing sleeve is provided with a limiting flange 39, and the limiting flange is provided with limiting pins 40 which are in one-to-one correspondence with the four limiting holes.
The principle of the invention is as follows with reference to the attached drawings: the outer end of the rotary sleeve is connected with a rotating pipeline, the interfaces at the two ends of the liquid outlet channel are respectively connected with the two pipelines, the rotary sleeve can play a good role in axial vibration reduction through a pressure spring and an auxiliary pressure spring, the influence of vibration generated by rotation on the rotary joint is reduced, and two-stage sealing is adopted, so that the sealing performance is high; the medium flow direction can be switched according to the needs, as shown in fig. 3, the port A of the T-shaped channel is connected with the flow guide hole, the port B is communicated with the left end of the liquid outlet channel, the port C is communicated with the right end of the liquid outlet channel, the medium flows out from the two ends of the liquid outlet channel, when the medium flow direction needs to be changed, as shown in fig. 5, 6 and 7, the pressing sleeve is pressed down, the rotating handle is rotated by 90 degrees, at the moment, the port A is communicated with the right end of the liquid outlet channel, the port B is communicated with the flow guide cylinder, the port C is closed, at the moment, the medium only flows out from the right end of the liquid outlet channel, and similarly, as shown; as shown in fig. 9, when rotated to this position, the medium cannot flow out.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (5)
1. A vibration damping type rotary joint structure comprises a shell and a rotary sleeve, wherein a rotary cavity is arranged at the upper end of the shell, the lower end of the rotary sleeve extends into the rotary cavity, the upper end of the rotary sleeve extends out of a joint body, and an end cover is arranged at the opening end of the rotary cavity; a bearing is arranged between the upper end of the limiting convex ring and the end cover, a pressure spring is arranged between the lower end of the limiting convex ring and the bottom surface of the rotating cavity, a flow guide hole is arranged in the center of the bottom surface of the rotating cavity, a liquid outlet channel which is transversely communicated is arranged at the lower end of the shell, the flow guide hole is communicated with the middle side surface of the liquid outlet channel, and interfaces are arranged at two ends of the liquid outlet channel on the shell; a cylindrical cavity is arranged in the center of the liquid outlet channel in the shell, a cylindrical rotating block is arranged in the cylindrical cavity, a T-shaped channel is arranged in the rotating block, an A port, a B port and a C port which are mutually communicated are arranged on the T-shaped channel, a sealing cover is arranged at the upper end of the cylindrical cavity, a rotating shaft penetrating through the sealing cover is fixed at the upper end of the rotating block, a rotating handle is arranged at the outer end of the rotating shaft, and a T-shaped mark is arranged on the rotating handle; sealing rings C are arranged on the upper side and the lower side of the T-shaped channel on the circumferential surface of the rotating block, and sealing rings D are arranged on the outer sides of the port A, the port B and the port C on the circumferential surface of the rotating block; a pin shaft penetrating through the bottom of the cylindrical cavity and extending out of the shell is fixed at the lower end of the rotating block, a pressing sleeve is arranged on the pin shaft, the pressing sleeve is connected with the pin shaft through a spline, a limiting seat is arranged on the shell and positioned on the outer side of the pressing sleeve, the top end of the pressing sleeve extends out of the limiting seat, and a reset pressure spring is arranged between the outer end of the pin shaft and the inner bottom surface of the pressing sleeve; the inner bottom surface of the limiting seat is provided with four limiting holes which are uniformly distributed along the circumferential direction, the outer side surface of the pressing sleeve is provided with a limiting flange, and limiting pins which correspond to the four limiting holes one by one are arranged on the limiting flange.
2. The vibration damping rotary joint structure according to claim 1, wherein the bottom surface of the rotation cavity is provided with a concave cavity, the side surface of the concave cavity is a lower conical surface with a large top and a small bottom, the lower end of the rotation sleeve extends to form a guide sleeve, the outer side of the guide sleeve is provided with a sliding sleeve, the sliding sleeve is slidably connected with the guide sleeve, a sealing ring B is arranged between the sliding sleeve and the guide sleeve, the lower end of the sliding sleeve is provided with an upper conical surface matched with the lower conical surface, and an auxiliary pressure spring is arranged between the upper end of the sliding sleeve and the lower end of the rotation sleeve.
3. The vibration damping rotary joint structure according to claim 2, wherein the upper end of the sliding sleeve is provided with a lower compression spring retaining groove, the lower end of the rotating sleeve is provided with an upper compression spring retaining groove, the upper end of the auxiliary compression spring is located in the upper compression spring retaining groove, and the lower end of the auxiliary compression spring is located in the lower compression spring retaining groove.
4. A vibration damping swivel joint construction as claimed in claim 1, wherein a dust collar is provided between the inner end of the end cap and the bearing.
5. A vibration damping rotary joint structure according to claim 1, 2 or 3, wherein a plurality of parallel mesh partition plates are provided in the inner hole of the rotary sleeve, an isolation support ring is provided between two adjacent mesh partition plates, a limit stop ring is provided on the inner side of the upper end of the rotary sleeve, and the limit stop ring is screwed with the inner hole of the rotary sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811098218.XA CN108980491B (en) | 2018-09-20 | 2018-09-20 | Damping formula rotary joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811098218.XA CN108980491B (en) | 2018-09-20 | 2018-09-20 | Damping formula rotary joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980491A CN108980491A (en) | 2018-12-11 |
| CN108980491B true CN108980491B (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811098218.XA Active CN108980491B (en) | 2018-09-20 | 2018-09-20 | Damping formula rotary joint structure |
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| Country | Link |
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| CN (1) | CN108980491B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483755A (en) * | 2020-11-26 | 2021-03-12 | 江西爱森德实业有限公司 | Pipeline with anti-seismic structure |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4136799A1 (en) * | 1991-11-08 | 1993-05-13 | Josef Fey Lamellenringe | Lamellar ring seal for exhaust pipe joint - has wave contour spring ring supporting lamellar single seal ring |
| WO2008024086A1 (en) * | 2006-08-23 | 2008-02-28 | Moskovchenko Yuriy Volodymyrov | Quick coupling fitting for hoses and pipes |
| CN201284892Y (en) * | 2008-09-22 | 2009-08-05 | 浙江柏润液压有限公司 | Spherical straight-through rotating joint for continuous casting device |
| CN201992240U (en) * | 2010-12-17 | 2011-09-28 | 孜旺有限公司 | Quick coupling |
| CN204573198U (en) * | 2015-04-28 | 2015-08-19 | 温州大宇科技有限公司 | For the threeway two-position valve of alcohol distilling equipment |
| CN105909897A (en) * | 2016-06-30 | 2016-08-31 | 刘延俊 | Automatic compensation type high-pressure rotating joint |
| CN107237933A (en) * | 2017-07-14 | 2017-10-10 | 芜湖威灵数码科技有限公司 | A kind of closed rotary connecting joint with self-adjusting structure |
| CN207316299U (en) * | 2017-10-10 | 2018-05-04 | 中国石油化工股份有限公司 | High-pressure sealed rotary joint |
| CN207315762U (en) * | 2017-09-01 | 2018-05-04 | 河北华春液压汽配有限公司 | Pressure control type oil circuit automatic transfer valve |
| CN207378190U (en) * | 2017-09-18 | 2018-05-18 | 福建翰达流体控制设备有限公司 | A kind of roller orbit ball valve |
| CN108507205A (en) * | 2018-04-02 | 2018-09-07 | 四川东方聚源科技有限公司 | A kind of rotary joint for trough type solar power generation |
-
2018
- 2018-09-20 CN CN201811098218.XA patent/CN108980491B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4136799A1 (en) * | 1991-11-08 | 1993-05-13 | Josef Fey Lamellenringe | Lamellar ring seal for exhaust pipe joint - has wave contour spring ring supporting lamellar single seal ring |
| WO2008024086A1 (en) * | 2006-08-23 | 2008-02-28 | Moskovchenko Yuriy Volodymyrov | Quick coupling fitting for hoses and pipes |
| CN201284892Y (en) * | 2008-09-22 | 2009-08-05 | 浙江柏润液压有限公司 | Spherical straight-through rotating joint for continuous casting device |
| CN201992240U (en) * | 2010-12-17 | 2011-09-28 | 孜旺有限公司 | Quick coupling |
| CN204573198U (en) * | 2015-04-28 | 2015-08-19 | 温州大宇科技有限公司 | For the threeway two-position valve of alcohol distilling equipment |
| CN105909897A (en) * | 2016-06-30 | 2016-08-31 | 刘延俊 | Automatic compensation type high-pressure rotating joint |
| CN107237933A (en) * | 2017-07-14 | 2017-10-10 | 芜湖威灵数码科技有限公司 | A kind of closed rotary connecting joint with self-adjusting structure |
| CN207315762U (en) * | 2017-09-01 | 2018-05-04 | 河北华春液压汽配有限公司 | Pressure control type oil circuit automatic transfer valve |
| CN207378190U (en) * | 2017-09-18 | 2018-05-18 | 福建翰达流体控制设备有限公司 | A kind of roller orbit ball valve |
| CN207316299U (en) * | 2017-10-10 | 2018-05-04 | 中国石油化工股份有限公司 | High-pressure sealed rotary joint |
| CN108507205A (en) * | 2018-04-02 | 2018-09-07 | 四川东方聚源科技有限公司 | A kind of rotary joint for trough type solar power generation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108980491A (en) | 2018-12-11 |
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Address after: 310000 zengjiaqiao community, Xintang street, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou younengte rotary adapter Precision Manufacturing Co.,Ltd. Address before: 310000 zengjiaqiao community, Xintang street, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU YOUNENGTE ROTATION CONNECTOR MANUFACTURING FACTORY |