CN202521114U - Wear-resisting elbow for ventilating ducts - Google Patents
Wear-resisting elbow for ventilating ducts Download PDFInfo
- Publication number
- CN202521114U CN202521114U CN2012200834315U CN201220083431U CN202521114U CN 202521114 U CN202521114 U CN 202521114U CN 2012200834315 U CN2012200834315 U CN 2012200834315U CN 201220083431 U CN201220083431 U CN 201220083431U CN 202521114 U CN202521114 U CN 202521114U
- Authority
- CN
- China
- Prior art keywords
- elbow
- inlet
- wear
- angle
- shock
- 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
Links
Images
Abstract
The utility model relates to a wear-resisting elbow for ventilating ducts. The wear-resisting elbow comprises an elbow inlet (1) and an elbow outlet (2), wherein the diameters of the elbow inlet (1) and the elbow outlet (2) are same; and the wear-resisting elbow is characterized in that a semi-concave cavity body (3) is additionally arranged on the outward bent side of a bent pipe between two pipe connecting surfaces of the elbow inlet (1) and the elbow outlet (2), the cavity body of the whole elbow is in the shape of a doctorial hat, a buffering negative camber (4) at the inner side of the elbow between the elbow inlet (1) and the elbow outlet (2) is arc-shaped, and an elbow impact angle (6) is 0-180 degrees. The wear-resisting elbow disclosed by the utility model is simple in design, convenient to improve, and suitable for the popularization and application of the existing dust removal pipes.
Description
Technical field
The utility model belongs to ventilation duct elbow technical field, relates in particular to the cleaning shaft wear-resistant bend that a kind of conveying has the Dual-Phrase Distribution of Gas olid of solid particle.
Background technique
The dust-containing airflow ventilation duct is an important component part in the dust pelletizing system; Difference according to dust characteristic; Air velocity duct is generally got 15-25m/s, and the dust-containing airflow strong for chiseling property of mill, that concentration is high, the straight tube that special-shaped part and facing connects in the cleaning shaft are prone to wear and tear; Tube wall with in 180-240 ° of scope of bend pipe excurvation side is the most serious, and the wearing and tearing of cleaning shaft mainly are abrasive wears.The most frequently used material of cleaning shaft is the Q235 steel plate, and this material hardness is not high, and abrasion-resistance is relatively poor; In practical application, the bend part of right angle cleaning shaft is worn through the most easily, grinds, according to the requirement of national environmental protection facility " three simultaneously "; Deduster must move with main equipment simultaneously, is negative pressure in the cleaning shaft in addition, and pipeline only could soldering in when maintenance; Therefore, after wearing and tearing appearred in elbow, dedusting pipe network air leak rate of air curtain increased; Effective wind rate reduces, and in the time of the environmental protection wasting of resources, the post dust concentration can't guarantee up to standard.If the employing high-abrasive material, the one-time investment of dedusting pipe network will increase 10-15%.A kind of pipeline wear-resistant bend of application number 00235090.4; Through the curved head body machined between two pipeline junction surfaces is an inner ball surface chamber; Weaken the impact force of medium, prolong the working life of elbow, have solid particulate matter suspended matter fluid pipeline but this elbow is applicable to conveying.Angle is the right angle in accompanying drawing 1 elbow, and this position is unavoidable worn area, is unfavorable for the raising in elbow life-span.
Summary of the invention
The purpose of the utility model provides a kind of ventilation duct wear-resistant bend.Realize that the technological scheme that the utility model is taked is: this ventilation duct wear-resistant bend includes elbow inlet and elbow outlet; The diameter of elbow inlet and elbow outlet is identical; It is characterized in that: the bend pipe excurvation side between two pipeline junction surfaces of elbow is set up one and half reentrant cavity bodies; The one piece elbow cavity body is " doctor's shape for hat ", and this elbow can be connected in cleaning shaft according to the solid phase particles properties, and the angle of the elbow angle of shock is the 0-180 degree.When cavity body is flowed through in Dual-Phrase Distribution of Gas olid, because the interior sectional area of " doctor's shape for hat " cavity body is much larger than the cross-section area of pipeline, for the gas of given volume; Gas flow rate slows down in the cavity; Solid phase particles weakens the tube wall impact force, and shock point reduces, the corresponding prolongation of elbow life-span.Along with forming the particle buffer layer between two phase flow in " doctor's shape for hat " cavity body and the tube wall; Utilize spontaneous wear-resisting principle; The particle buffer layer plays a protective role to tube wall, has reduced the impact force and impact number of times of two phase flow to tube wall, thereby has reached wear-resisting purpose.The buffering negative camber of elbow inner surface is an arc, avoids occurring worn area.
The utility model simplicity of design, improvement conveniently are applicable to applying of present cleaning shaft.
Description of drawings
Fig. 1 is that the utility model elbow angle of shock is the wear-resistant bend structural representation of 90 degree;
Fig. 2 is that the utility model elbow angle of shock is the wear-resistant bend structural representation of 120 degree.
Among the figure: 1, elbow inlet, 2, the elbow outlet, 3, half reentrant cavity body; 4, buffering negative camber, 5, particle, 6, the elbow angle of shock; 7, the angle of shock is half reentrant cavity body base of 90 degree; 8, the angle of shock be 90 the degree limit, half reentrant cavity side, 9, the angle of shock be 120 the degree half reentrant cavity body base, 10, the angle of shock be 120 the degree limit, half reentrant cavity side.
Embodiment
With reference to accompanying drawing; This ventilation duct wear-resistant bend includes elbow inlet 1 and elbow outlet 2; The diameter of elbow inlet 1 and elbow outlet 2 is identical, it is characterized in that: elbow inlet 1 and elbow export 2 two bend pipe excurvation sides between the pipeline junction surface and set up one and half reentrant cavity bodies 3, and the one piece elbow cavity body is " doctor's shape for hat "; Elbow inner surface buffering negative camber 4 is an arc between elbow import 1 and the outlet 2, and the elbow angle of shock 6 is 0～180 degree.The elbow angle of shock 6 is 90 degree; Radius of curvature R is 1.5 with the diameter ratio of elbow inlet 1; The angle of shock is that the length on half reentrant cavity body base 7 of 90 degree is enter the mouth 2 times of 1 diameter of elbow, and the angle of shock is that the length on the limit, half reentrant cavity side 8 of 90 degree is elbow 1/2nd of 1 diameter that enters the mouth.The elbow angle of shock 6 is 120 degree; Radius of curvature R is 1.5 with the diameter ratio of elbow inlet 1; The angle of shock is that the length on half reentrant cavity body base 9 of 120 degree is enter the mouth 2 times of 1 diameter of elbow, and the angle of shock is that the length on the limit, half reentrant cavity side 10 of 120 degree is elbow 1/2nd of 1 diameter that enters the mouth.The utility model is through welding with the pipeline counterpart, and size requires to design and produce according to dedusting.Light and slow transition behind the two phase flow entering elbow, crushing reduces; Also avoid simultaneously the wearing and tearing of elbow excurvation side.
Claims (3)
1. ventilation duct wear-resistant bend; Include elbow inlet (1) and elbow outlet (2); The diameter of elbow inlet (1) and elbow outlet (2) is identical; It is characterized in that: the bend pipe excurvation side between elbow inlet (1) and (2) two pipeline junction surfaces of elbow outlet is set up one and half reentrant cavity bodies (3); The one piece elbow cavity body is " doctor's shape for hat ", and elbow inner surface buffering negative camber (4) is an arc between elbow import (1) and the outlet (2), and the elbow angle of shock (6) is 0～180 degree.
2. according to the said ventilation duct wear-resistant bend of claim 1; It is characterized in that: the elbow angle of shock (6) is 90 degree; The diameter ratio of radius of curvature R and elbow inlet (1) is 1.5; The angle of shock is that the length on half reentrant cavity body base (7) of 90 degree is 2 times of elbow inlet (1) diameter, and the angle of shock is that the length on the limit, half reentrant cavity side (8) of 90 degree is 1/2nd of elbow inlet (1) diameter.
3. according to the said ventilation duct wear-resistant bend of claim 1; It is characterized in that: the elbow angle of shock (6) is 120 degree; The diameter ratio of radius of curvature R and elbow inlet (1) is 1.5; The angle of shock is that the length on half reentrant cavity body base (9) of 120 degree is 2 times of elbow inlet (1) diameter, and the angle of shock is that the length on the limit, half reentrant cavity side (10) of 120 degree is 1/2nd of elbow inlet (1) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200834315U CN202521114U (en) | 2012-03-08 | 2012-03-08 | Wear-resisting elbow for ventilating ducts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200834315U CN202521114U (en) | 2012-03-08 | 2012-03-08 | Wear-resisting elbow for ventilating ducts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202521114U true CN202521114U (en) | 2012-11-07 |
Family
ID=47104066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200834315U Expired - Fee Related CN202521114U (en) | 2012-03-08 | 2012-03-08 | Wear-resisting elbow for ventilating ducts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202521114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600463A (en) * | 2015-10-23 | 2016-05-25 | 山东冠峰机械股份有限公司 | Pneumatic material guider |
-
2012
- 2012-03-08 CN CN2012200834315U patent/CN202521114U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600463A (en) * | 2015-10-23 | 2016-05-25 | 山东冠峰机械股份有限公司 | Pneumatic material guider |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206156362U (en) | Raw materials conveying system abrasionproof decreases aerifys return bend | |
| CN106607767B (en) | A kind of efficient sand-blasting machine of wheel hub | |
| CN202521114U (en) | Wear-resisting elbow for ventilating ducts | |
| CN204062293U (en) | A kind of fluid force conveying elbow | |
| CN107044146B (en) | Pipeline mud device | |
| CN102120529A (en) | Method and pipeline for conveying granular coal | |
| CN204186389U (en) | Development machine dedusting fan | |
| CN209458179U (en) | Semi-open type shunts small flow rate high pressure impeller of centrifugal fan | |
| CN105371052A (en) | Wear-resisting device for dedusting pipeline | |
| CN217482282U (en) | Slow-flow impact-resistant elbow pipe fitting | |
| CN202195215U (en) | Wearable three-way pipeline | |
| CN203927199U (en) | A kind of Novel pneumatic ash conveying pipe blocking-proof elbow | |
| CN108622663A (en) | A kind of spherical elbow wear-resisting suitable for air-transport system | |
| CN203390746U (en) | Environment-friendly sand blasting room | |
| CN204727170U (en) | A kind of air pressure balance airduct for material transfer system | |
| CN202185234U (en) | Low-resistance Venturi tube for bag dust remover | |
| CN201916649U (en) | Riffling buffer conveying pipe | |
| CN205166704U (en) | Compressed air shot -blasting machine | |
| CN207401896U (en) | A kind of shot-blasting machine dust collecting | |
| CN202432151U (en) | Connection flange device for pneumatic conveying pipelines | |
| CN207539499U (en) | A kind of air-cushion type is exempted to wear elbow | |
| CN205244740U (en) | Cleaning tube's wear resistant device | |
| CN202195219U (en) | Wear resistant elbow | |
| CN206112365U (en) | Novel wear -resisting elbow of buggy | |
| CN204453824U (en) | A kind of Pneumatic ash conveying large ash silo ash inlet assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150308 |
|
| EXPY | Termination of patent right or utility model |