CN107756266B - Sand blast nozzle - Google Patents
Sand blast nozzle Download PDFInfo
- Publication number
- CN107756266B CN107756266B CN201711205895.2A CN201711205895A CN107756266B CN 107756266 B CN107756266 B CN 107756266B CN 201711205895 A CN201711205895 A CN 201711205895A CN 107756266 B CN107756266 B CN 107756266B
- Authority
- CN
- China
- Prior art keywords
- cavity
- spraying part
- feeding pipe
- axis
- outlet
- 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.)
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Links
- 239000004576 sand Substances 0.000 title abstract description 46
- 238000005507 spraying Methods 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 abstract 1
- 238000005488 sandblasting Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000006187 pill Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a sand blast nozzle, which comprises a feeding pipe, a Rong Sha bin and a spraying part, wherein the Rong Sha bin is provided with an ellipsoidal cavity, one end of a long shaft of the cavity is provided with an inlet, the feeding pipe is a section of arc pipe section, an outlet of the feeding pipe is connected with the inlet of the cavity of the sand accommodating bin, the arc protruding direction of the feeding pipe is consistent with the protruding direction of a protruding end in the long shaft direction of the cavity, and the other end of the long shaft of the cavity is also provided with an outlet; the spraying part is in a horn shape, the small end of the spraying part is connected with the outlet end of the cavity, the axis of the spraying part is coaxially arranged with the long axis of the cavity, an elliptic split body with the long axis coaxial with the long axis of the cavity is arranged in the horn mouth of the spraying part, the split body is supported and fixed by a plurality of connecting ribs fixed on the inner wall of the spraying part, one end of each connecting rib is fixed on the inner wall of the spraying part, the other end of each connecting rib is fixed on the surface of the split body, and all the connecting ribs take the axis of the spraying part as the center to form a circular array. The sand blast nozzle can evenly spray out sand balls, and the spraying area is large.
Description
Technical Field
The invention belongs to the technical field of sand blasting, and particularly relates to a sand blasting nozzle for sand blasting.
Background
The sand blast nozzle is a component for finally spraying sand balls during ball blasting and sand blasting, the existing sand blast nozzle is a cylindrical metal pipe body, the sand outlet end of a part of the circular pipe-shaped sand blast pipe is in a folded sharp nozzle shape, the structure is simple, the sand blast effect is poor, the sand balls are transported and sprayed in a circular channel all the time, the flow state is stable, the sand balls are in a clustered straight line shape after being sprayed mostly, the central position is excessively concentrated during spraying, the periphery is too dispersed, the distribution surface is narrow, the sand blast nozzle is suitable for the sand blasting of hard and miniature parts, and for the defect of the sand blasting surface in general sand blasting treatment, the efficiency is low, and especially, some softer materials are easy to cause local excessive erosion.
Disclosure of Invention
The invention aims to provide a sand blast nozzle which has wide and uniform sand blast area and good sand blast effect.
The technical scheme of the invention is as follows:
the sand blast nozzle comprises a feeding pipe, a Rong Sha bin and a spraying part, wherein the Rong Sha bin is provided with an ellipsoidal cavity, one end of a long shaft of the cavity is provided with an inlet, the feeding pipe is a section of arc pipe section, an outlet of the feeding pipe is connected with the inlet of the cavity of the sand accommodating bin, the direction of the arc bulge of the feeding pipe is consistent with the direction of the bulge end bulge in the long shaft direction of the cavity, and the other end of the long shaft of the cavity is also provided with an outlet; the spraying part is in a horn shape, the small end of the spraying part is connected with the outlet end of the cavity, the axis of the spraying part is coaxially arranged with the long axis of the cavity, an elliptic shunt body with the long axis coaxial with the long axis of the cavity is arranged in the horn mouth of the spraying part, the shunt body is supported and fixed by a plurality of connecting ribs fixed on the inner wall of the spraying part, one end of each connecting rib is fixed on the inner wall of the spraying part, the other end of each connecting rib is fixed on the surface of the shunt body, and all the connecting ribs take the axis of the spraying part as the center and are in a circular array.
Further, the caliber of the feeding pipe gradually increases along the direction from the inlet to the outlet, and the ratio of the inlet radius to the outlet radius is 1:3.5.
Further, the ratio of the radius of the axis of the feed pipe to the inlet radius of the feed pipe is 10:1.
Further, the ratio of the length of the major axis to the length of the minor axis of the cavity is 2:1.
Further, the ratio of the minor axis of the cavity to the outlet radius of the feed tube was 4.3:1.
Furthermore, the number of the connecting ribs is three, the connecting ribs are all made of round steel, and the ratio of the length of the long shaft to the length of the short shaft of the split fluid to the length of the diameter of the round steel is 4:1:0.2.
Further, the length of the ejection portion in the axial direction is the half-length axial length of the cavity.
Further, the center of the split fluid is spaced 1.5 times the minor axis length of the cavity from the center of the cavity.
The invention has the beneficial effects that: the invention adopts a three-stage structure to realize uniform and stable injection of the sand pill, improves the injection area as much as possible and ensures uniform and stable spraying. When the sand balls are conveyed to the feeding pipe through the long high-pressure pipeline, the sand balls are gradually released and dispersed (because the caliber is gradually increased and the pressure is reduced) due to the structural characteristics of the arc shape and the caliber gradual change of the feeding pipe, the pressure is further released in the cavity after entering the ellipsoidal cavity, the original concentrated fluid is dispersed, part of the sand balls are secondarily mixed, and the sand balls are three-level, and finally, when the sand balls pass through the spraying part, the spraying part is in a horn shape (conical shape), all the sand balls are reduced again at the small port of the spraying part after being buffered and released in the cavity, the pressure is started to be increased, the accumulated sand balls are sprayed towards the large port through the small port, and the pressure of the sand ball fluid is suddenly released again due to the instantaneous amplification of the space, so that the sand balls can be sprayed out in a larger area, and the sand balls in the center of the small port are more dense, so that special fluid is arranged, the sand balls in the center position are blocked and dispersed around, and compared with the existing sand balls which are enabled to be directly and rapidly discharged from the conveying pipeline to the spraying nozzle, the sand balls are not only in a larger area, but also in a uniform area, and a high-hardness part is achieved, and the sand blasting part is especially suitable for the surface treatment with high hardness.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in FIG. 1, a sand blast nozzle comprises a feeding pipe 1, a sand accommodating bin 2 and a spraying part 3, wherein the Rong Sha bin 2 is provided with an elliptic cavity 4, one end of a long shaft of the cavity 4 is provided with an inlet, the feeding pipe 1 is a section of arc pipe section, an outlet of the feeding pipe 1 is connected with the inlet of the cavity of the sand accommodating bin 2, the arc protruding direction of the feeding pipe 1 is consistent with the protruding direction of a protruding end in the long shaft direction of the cavity 4, and the other end of the long shaft of the cavity 4 is also provided with an outlet. The spraying part 3 is in a horn shape, the small end of the spraying part 3 is connected with the outlet end of the cavity 4, the axis of the spraying part 3 is coaxially arranged with the long axis of the cavity 4, an elliptic split body 5 with the long axis coaxial with the long axis of the cavity 4 is arranged in the horn mouth of the spraying part 3, the split body 5 is supported and fixed by a plurality of connecting ribs 6 fixed on the inner wall of the spraying part 3, one end of each connecting rib 6 is fixed on the inner wall of the spraying part 3, the other end is fixed on the surface of the split body 5, and all the connecting ribs 6 are in a circular array with the axis of the spraying part 3 as the center.
Further, the caliber of the feeding pipe 1 gradually increases along the direction from the inlet a to the outlet b, and the ratio of the inlet radius to the outlet radius is 1:3.5. The caliber ratio is favorable for gradually releasing the sand pills and preparing before spraying.
Further, the ratio of the radius R of the axis of the feed pipe 1 to the inlet radius of the feed pipe 1 is 10:1, which further optimizes the gradual release of the pellets, providing for the effect of preparation before injection.
Further, the ratio of the length of the long axis to the length of the short axis of the cavity 4 is 2:1, the cavity with the shape is favorable for gathering and remixing the sand balls in the cavity, buffering is carried out after release, energy is accumulated, and the spraying effect is improved.
Further, the ratio of the minor axis of the cavity 4 to the outlet radius of the feed tube is 4.3:1. The sand balls are more favorable for being dispersed in the cavity once and partially remixed, and buffer after being released by the feed pipe 1, store energy and promote the spraying effect
Further, the number of the connecting ribs 6 is three, and the connecting ribs are all made of round steel, and the ratio of the length of the long shaft to the length of the short shaft of the split body 5 to the length of the diameter of the round steel is 4:1:0.2. The round steel is convenient for reducing friction, the sand balls can be separated on the premise of reducing friction collision as much as possible, the sand balls are dispersed as much as possible and are uniformly sprayed out, the sand blasting effect is greatly improved, the cone angle C of the spraying part 3 is preferably 90, and the spraying area can be enlarged on the premise of ensuring the pressure during spraying as much as possible.
Further, the length L of the ejection portion 3 in the axial direction is the half-length axial length of the cavity 4. The injection part 3 with the size is better matched with the cavity 4, so that the sand balls are dispersed in the cavity 4 for the first time and are mixed in part more uniformly.
Further, under the condition based on all the parameters, the distance k between the center of the split body 5 and the center of the cavity 4 is 1.5 times the short axis length of the cavity 4, and the structural parameters enable the sand pellets to be conveyed at high speed, and the sand pellets are gradually dispersed and released for the first time during conveying of the feeding pipe 1, are dispersed and released again in the sand accommodating bin and are partially mixed, and then are ejected through the ejection part, so that the effect is better, more uniform and stable.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (2)
1. A blast nozzle, characterized in that: the sand-accommodating device comprises a feeding pipe, a Rong Sha bin and a spraying part, wherein the Rong Sha bin is provided with an ellipsoidal cavity, one end of a long shaft of the cavity is provided with an inlet, the feeding pipe is a section of arc pipe section, an outlet of the feeding pipe is connected with the inlet of the sand-accommodating bin cavity, the arc protruding direction of the feeding pipe is consistent with the protruding direction of a protruding end in the long shaft direction of the cavity, and the other end of the long shaft of the cavity is also provided with an outlet; the spraying part is in a horn shape, the small end of the spraying part is connected with the outlet end of the cavity, the axis of the spraying part is coaxially arranged with the long axis of the cavity, an elliptic shunt body with the long axis coaxial with the long axis of the cavity is arranged in the horn mouth of the spraying part, the shunt body is supported and fixed by a plurality of connecting ribs fixed on the inner wall of the spraying part, one end of each connecting rib is fixed on the inner wall of the spraying part, the other end of each connecting rib is fixed on the surface of the shunt body, and all the connecting ribs take the axis of the spraying part as the center and form a circular array;
the caliber of the feeding pipe gradually increases along the direction from the inlet to the outlet, and the ratio of the inlet radius to the outlet radius is 1:3.5;
the ratio of the radius of the axis of the feeding pipe to the inlet radius of the feeding pipe is 10:1;
the ratio of the length of the long axis to the length of the short axis of the cavity is 2:1;
the ratio of the short axis of the cavity to the outlet radius of the feeding pipe is 4.3:1;
the distance between the center of the split flow body and the center of the cavity is 1.5 times the short axis length of the cavity.
2. A blast nozzle according to claim 1, wherein: the connecting ribs are three and are made of round steel, and the ratio of the length of the long shaft to the length of the short shaft of the split fluid to the diameter length of the round steel is 4:1:0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711205895.2A CN107756266B (en) | 2017-11-27 | 2017-11-27 | Sand blast nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711205895.2A CN107756266B (en) | 2017-11-27 | 2017-11-27 | Sand blast nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107756266A CN107756266A (en) | 2018-03-06 |
| CN107756266B true CN107756266B (en) | 2023-10-27 |
Family
ID=61276163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711205895.2A Active CN107756266B (en) | 2017-11-27 | 2017-11-27 | Sand blast nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107756266B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB157365A (en) * | 1914-08-10 | 1922-06-12 | Victor Kaplan | Improvements in nozzles or ejectors for converting the velocity of a fluid into pressure |
| CN104208981A (en) * | 2014-08-22 | 2014-12-17 | 无锡雪浪环境科技股份有限公司 | Activated carbon jetting device |
| JP2015199131A (en) * | 2014-04-04 | 2015-11-12 | 株式会社アルプスエンジニアリング | Abrasive material injection device |
| CN205184549U (en) * | 2015-12-07 | 2016-04-27 | 杨康宁 | Wear -resisting nozzle of high speed of sand blasting machine |
| JP2017052029A (en) * | 2015-09-08 | 2017-03-16 | Ｊｆｅスチール株式会社 | Bent blast nozzle |
| CN206200772U (en) * | 2016-09-21 | 2017-05-31 | 天津市顺天盛典运动器材有限公司 | The nozzle structure of sand-blasting machine |
| CN207724143U (en) * | 2017-11-27 | 2018-08-14 | 重庆优特模具有限公司 | A kind of blast nozzle |
-
2017
- 2017-11-27 CN CN201711205895.2A patent/CN107756266B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB157365A (en) * | 1914-08-10 | 1922-06-12 | Victor Kaplan | Improvements in nozzles or ejectors for converting the velocity of a fluid into pressure |
| JP2015199131A (en) * | 2014-04-04 | 2015-11-12 | 株式会社アルプスエンジニアリング | Abrasive material injection device |
| CN104208981A (en) * | 2014-08-22 | 2014-12-17 | 无锡雪浪环境科技股份有限公司 | Activated carbon jetting device |
| JP2017052029A (en) * | 2015-09-08 | 2017-03-16 | Ｊｆｅスチール株式会社 | Bent blast nozzle |
| CN205184549U (en) * | 2015-12-07 | 2016-04-27 | 杨康宁 | Wear -resisting nozzle of high speed of sand blasting machine |
| CN206200772U (en) * | 2016-09-21 | 2017-05-31 | 天津市顺天盛典运动器材有限公司 | The nozzle structure of sand-blasting machine |
| CN207724143U (en) * | 2017-11-27 | 2018-08-14 | 重庆优特模具有限公司 | A kind of blast nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107756266A (en) | 2018-03-06 |
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