CN2206889Y - 12 MPa high-pressure water or serous rotary joint - Google Patents
12 MPa high-pressure water or serous rotary joint Download PDFInfo
- Publication number
- CN2206889Y CN2206889Y CN 94217214 CN94217214U CN2206889Y CN 2206889 Y CN2206889 Y CN 2206889Y CN 94217214 CN94217214 CN 94217214 CN 94217214 U CN94217214 U CN 94217214U CN 2206889 Y CN2206889 Y CN 2206889Y
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- China
- Prior art keywords
- pressure water
- rotary joint
- utility
- seal
- model
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a rotary joint used for transporting the high-pressure water or the serosity from fixed parts to rotary parts. The working principle is that solid particles of the conveyance medium are absorbed and intercepted by a colloid. An O-shaped rubber ring is arranged to seal the fluid pressure by using suspension, that is to say, the working face of the O-shaped rubber ring is an end surface rather than a lateral surface. So the machining accuracy of a rotary axle and a case is reduced, and the service life of the O-shaped rubber ring is extended. The service life of the 12MPa high-pressure water or serous rotary joint can reach to 1000 hours when the pressure is 12MPa and the rotation speed is 300 rpm. The utility model provides an axial liquid-in and a radial liquid-in two structures according to different use situations, wherein, the maximum outside diameter of the axial rotary joint is 45 mm; the length is 90 mm; the weight is 0.75 kg when the normal discharge is 50 l/min. The utility model can be used for hand spay gun directly to carry out various cleaning works.
Description
Swivel joint is a middle coupling mechanism of realizing that fluid is carried to rotary component from the fixed tube circuit unit.For example from pumping plant to coal mining machine roller, the driving head carries high pressure water to be used for the internal spraying depositing dust needs swivel joint; From pumping plant to the high-pressure rubber pipe reel, carry high pressure water or slurry to need swivel joint to rotary nozzle from spray boom.In swivel joint, exist the relative movement between running shaft and the external fixator housing, therefore must design sealing and from the moving surface gap, leak to stop fluid.Thereby swivel joint is also sometimes referred to as rotary seal.
The structure of rotary seal has multiple, and its principal mode is that clearance seal and filler, Sealing seal.
Clearance seal normally has leakage.Because the viscosity of water is lower, therefore when pressure 1MPa is above, can be difficult to use because leakage rate is excessive.In addition, seal clearance is usually in the magnitude of 0.01mm, and this just requires to be transferred medium can not contain impurity, just needs very high filter precision.
Being used to carry the rotary seal of high pressure water all is various Sealings and combination seal.But there are two major defects in present existing structure: the one, and volume is bigger, complex structure; The 2nd, requirement is transferred the certain turbidity test of medium, generally can not contain the solid particle of big (more than the 0.02mm) of particle diameter, otherwise will cause the damage of sealing surface or Sealing.The groove dimensions that provides in the existing machinery design handbook mainly is to be used for hydraulic pressure and pneumatic in addition, and its working medium is high pressure oil and low-pressure air, to the rotary seal of high pressure water and not exclusively suitable.These have greatly influenced the use of swivel joint, especially high pressure water jet and the front mixing abrasive jet stream application aspect cleaning.
The purpose of this utility model provides a kind of swivel joint, is used for pressure 12MPa following high pressure water or abrasive water and carries to rotary component.
The purpose of this utility model is achieved in that the certain thickness annulus filling colloid of design between running shaft and housing, absorption interception solid particle; The О type circle sealing-fluid pressure that suspends and install is set on axle.
When carrying high pressure water or slurry, because the rotatablely moving of axle, enter solid particle between axle and the colloid by colloid absorption interception, thereby can not continue to move forward into fitting surface between axle and the housing.
When utilizing О type circle sealing load, most critical be that the groove of О type circle is laid in design.The utility model proposes a kind of floated О type circle groove is installed, promptly groove depth is not less than О type circle cross section diameter.By selecting suitable external diameter decrement, make the О type when work with between the housing, keep relative static, and with axle slide relative takes place in the pressure-bearing side of groove.The working surface that is О type circle is not outer side surface but end face.This just brings three advantages:
1. as long as housing endoporus roughness reaches
, thereby only need adopt turning processing, have only a pressure-bearing side of last О type circle groove just need be ground to
, greatly reduced amount of finish and difficulty of processing;
2. О type circle suspends to install and just makes it directly not bear radial load, that is to say not play supporting role, and just is difficult in its working procedure being damaged;
3. because end face is the work interface, therefore wear surface just has only wearing and tearing when О type circle to reach a nearly half and just can lose efficacy, and this has just greatly prolonged the life-span of whole swivel joint.
In the conveying high pressure water that the utility model proposes or the swivel joint of slurry, wearing detail is a rubber О type circle, must be changed when the release of pressure hole begins to occur leaking.Usually when pressure 12MPa, rotating speed 300rpm, the О type circle life-span can reach 1000 hours.Because О type circle cost low (0.3 yuan every), it is convenient to install, and can be applicable to various applications fully.
According to Figure of description concrete structure of the present utility model is described below.
Figure one is a swivel joint of carrying high pressure water or slurries vertically.Colloid 1 is used to tackle solid particle among the figure; О type circle 2 suspends to install and is used for sealing-fluid pressure, and О type circle 4 and 8 is used for the lubricant oil in stuffing box bearing chamber; Two angular contact bearings 5 install the end thrust of load bearing fluid and certain radial force in the same way side by side; Offer groove, offer release of pressure hole 3 to guarantee work safety at running shaft 9 at housing 6; Bearing (ball) cover 7 adopts screw threads for fastening to reduce radial dimension.When rated flow 50l/min, the rotary nozzle maximum outside diameter that the utility model provides is 45mm, and length is 90mm, weight 0.75Kg.
Figure two is swivel joints of radially carrying high pressure water or slurry.Owing to adopt symplex structure, therefore do not need to consider axial hydraulic thrust, thereby needn't use bearing.Its working principle is identical with figure one, and just sealing must be in the liquid entering hole both sides.Colloid 1 is used to tackle solid particle specifically; О type circle 2 is used for sealing-fluid pressure, owing to be to revolve floating the installation, so it does not play supporting role, thereby can prolong its life-span.
The utility model has obtained practical application in the water jet cleaning process.Water jet is a kind of novel cleaning means, can remove various adhesive layers under the prerequisite of not damaging matrix.But because jet diameter less (about 2mm) energy height is concentrated, if jet does not have enough travelling speeds, cleaning speed and efficient all are quite low so.Usually all be to utilize two strands of jets to tilt to spray the recoil moment that produces to make the jet high speed rotating; In order to improve cleaning performance and speed, reduce working pressure again, abrasive grain can be added and produce front mixing abrasive jet stream in the high pressure water.The swivel joint that the utility model proposes can be carried high pressure water or the abrasive water fluid jet nozzle to rotation, thereby under the prerequisite of not boost pressure and flow, makes cleaning speed reach per hour 20 square metres, is 2～3 times of past.
Claims (2)
1, a kind of swivel joint that constitutes by housing, running shaft, angular contact bearing, O type rubber seal, gluey seal, be used for water below the pressure 12MPa or various slurries are carried to rotary component, it is characterized in that: utilize the solid particle in gluey seal (1) the interception conveying object, utilize O type rubber seal (2) convection cell to carry out wiper seal.
2, structure according to claim 1 is characterized in that: О type rubber seal (2) is to suspend to install in the groove of running shaft (9), and its sealed working face is that the slide relative face is an end face, rather than outer side surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94217214 CN2206889Y (en) | 1994-07-14 | 1994-07-14 | 12 MPa high-pressure water or serous rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94217214 CN2206889Y (en) | 1994-07-14 | 1994-07-14 | 12 MPa high-pressure water or serous rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2206889Y true CN2206889Y (en) | 1995-09-06 |
Family
ID=33832721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94217214 Expired - Fee Related CN2206889Y (en) | 1994-07-14 | 1994-07-14 | 12 MPa high-pressure water or serous rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2206889Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105709957A (en) * | 2016-04-18 | 2016-06-29 | 昆明奥图环保设备股份有限公司 | Atomizing system of mist spraying dust reducing equipment |
| CN106641524A (en) * | 2016-12-24 | 2017-05-10 | 北京工业大学 | Flange sectioning connection type rotary connector |
| CN107283325A (en) * | 2017-06-09 | 2017-10-24 | 中国铁建重工集团有限公司 | It is a kind of to be used to convey the swivel joint containing solid abrasive two phase flow |
| CN110000929A (en) * | 2019-04-28 | 2019-07-12 | 南京大地水刀股份有限公司 | A kind of super high power extra high voltage system |
-
1994
- 1994-07-14 CN CN 94217214 patent/CN2206889Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105709957A (en) * | 2016-04-18 | 2016-06-29 | 昆明奥图环保设备股份有限公司 | Atomizing system of mist spraying dust reducing equipment |
| CN106641524A (en) * | 2016-12-24 | 2017-05-10 | 北京工业大学 | Flange sectioning connection type rotary connector |
| CN106641524B (en) * | 2016-12-24 | 2018-10-09 | 北京工业大学 | A kind of subdivision flange join type rotary joint |
| CN107283325A (en) * | 2017-06-09 | 2017-10-24 | 中国铁建重工集团有限公司 | It is a kind of to be used to convey the swivel joint containing solid abrasive two phase flow |
| CN110000929A (en) * | 2019-04-28 | 2019-07-12 | 南京大地水刀股份有限公司 | A kind of super high power extra high voltage system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |