CN105313021A - Spray gun special for shot blasting in steel pipes - Google Patents
Spray gun special for shot blasting in steel pipes Download PDFInfo
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- CN105313021A CN105313021A CN201410377196.6A CN201410377196A CN105313021A CN 105313021 A CN105313021 A CN 105313021A CN 201410377196 A CN201410377196 A CN 201410377196A CN 105313021 A CN105313021 A CN 105313021A
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- spray gun
- pipeline
- sand
- steel pipe
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Abstract
The invention provides a spray gun special for shot blasting in steel pipes. The spray gun comprises a pipeline and a plug. The pipeline comprises a sand inlet, a diversion channel and a sand outlet which are sequentially communicated; the sand inlet is in a horn shape with an opening facing outwards; the plug is connected with the pipeline at the sand outlet; the inward end face of the plug is a convex conical end face; the connection end of the sand outlet and the diversion channel and the conical end face form an annular cavity; multiple through holes are aslant formed in the pipe wall, corresponding to the annular cavity, of the pipeline; the included angle between the center line of the through holes and the center line of the diversion channel and the included angle between the generatrix of the conical end face and the center line of the diversion channel are the same. The spray gun can ensure that sand shots sprayed out of the spray gun can be rapidly sprayed to the inner surfaces of the steel pipes.
Description
Technical field
The invention belongs to metal Surface Treatment Technique process field, especially relate to the spray gun that a kind of steel pipe internal-surface shot-peening is used.
Background technology
In actual life, along with the develop rapidly of modern industry, oil, mining industry, urban construction all needs a large amount of steel pipe building materials, high processing request is proposed to the processing of steel pipe, particularly in order to improve the corrosion resistance of steel pipe, to spray steel pipe inner wall and pay corrosion-inhibiting coating, for improving the tack of corrosion-inhibiting coating and steel pipe, to eliminate rust to its inner surface before steel pipe sprayed coating coating, the bead degreased, therefore, the spray gun of shot-peening directive steel pipe inner wall is the key technology processed steel pipe internal-surface, the spray gun of various version has been there is in prior art, wherein (application number 200820055010.5) spray gun for steel tube inner-wall reinforced peening of Shanghai Xinyaxin Technology Co., Ltd.'s research and development is applied well, this spray gun has a nozzle and a spray boom, its nozzle sets is contained in spray boom front end, this nozzle has an outer tube and a Water conservancy diversion core, wherein the front end of Water conservancy diversion core has a large head end, this spray gun forms an annular slot sprayed for ball gas mixed flow between nozzle guide core and outer tube front opening.But there is defect, its Water conservancy diversion core is that the fin by being provided with in outer tube is connected with outer tube, and in shot-peening process, this fin affects the movement fast of ball gas, namely have impact on the speed of sand ball, thus have impact on the shot-peening quality of steel pipe inner wall.
Summary of the invention
The problem to be solved in the present invention is to provide ball blast spray gun special in a kind of steel pipe, and the sand ball sprayed by this spray gun can be injected into steel pipe internal-surface fast.
For solving the problems of the technologies described above, the technical solution used in the present invention is: ball blast spray gun special in a kind of steel pipe, comprise pipeline and fill in stifled, this pipeline comprises the sand inlet be communicated with successively, flow-guiding channel and sand export, described sand inlet is the trumpet type of outward opening, described plug gets lodged in sand export place and is connected with pipeline, the described plug end face blocked up inwardly is the tapered end face protruded, link and this tapered end face of sand export and flow-guiding channel form ring cavity, described pipeline is provided with multiple through hole tube wall surface thereof corresponding to ring cavity, and the center line of described through hole is identical with the angle that the bus of tapered end face and the center line of flow-guiding channel are formed with the angle that the center line of flow-guiding channel is formed.
Further, described sand export is being trumpet type with flow-guiding channel link, and this horn-type opening outwardly.
Further, the angle that the center line of described through hole and the center line of flow-guiding channel are formed is 45 °.
Further, described plug is stifled is threaded with sand export.
Further, described plug one end blocked up outwardly is provided with tightens element, described in tighten element side rolled decorative pattern.
Further, described pipeline is radially provided with 2 ~ 3 grooves at the outer surface of sand inlet.
Further, described plug blocks up as T10 carbon tool steel.
The advantage that the present invention has and good effect are:
1). sand inlet of the present invention is opening horn mouth outwardly, is then connected with flow-guiding channel, and this design can increase the speed of the sand ball flow through, thus further increases the quality of shot-peening.
2). the incline direction of through hole of the present invention is identical with the conical surface of tapered end face, and this design ensure that the circulate of sand ball.
3). because spray gun is loss-type instrument, plug of the present invention is stifled to be threaded connection with pipeline, and it is stifled that this design can change plug in time, and then reduce cost, improves efficiency.
4). the sand ball speed sprayed by spray gun is high, the hardness of sand ball own is larger, larger to the damage of the stifled tapered end face of plug, therefore need periodic replacement plug stifled, the present invention is provided with tightening piece in the stifled one end outwardly of plug, and decorative pattern has been rolled in the side of this tightening piece, is easy to operation like this, change the stifled simple and fast of plug, improve efficiency.
5). because the sand inlet of shot-blasting machine is connected with delivery hose (not shown in FIG.), pipeline of the present invention is provided with groove at the outer surface of sand inlet, this design can increase the frictional force of flexible pipe and pipeline, and then makes the connection of flexible pipe and pipeline more firm.
6). the plug in the present invention is stifled selects T10 carbon tool steel plug to block up, and while ensureing the stifled toughness of plug, also assures that the hardness that plug is stifled, stifled service life is filled in relative extending, and reduces and changes the stifled frequency of plug.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is front view of the present invention;
Fig. 3 is pipeline sectional view of the present invention;
In figure: 1, sand inlet, 2. groove, 3. flow-guiding channel, 4. pipeline, 5. ring cavity,
6. through hole, 7. sand export, 8. tighten element, 9. decorative pattern, and 10. plug is stifled.
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
As Fig. 1, shown in Fig. 2 and Fig. 3, ball blast spray gun special in a kind of steel pipe, comprise pipeline 4 and plug stifled 10, this pipeline 4 comprises the sand inlet 1 be communicated with successively, flow-guiding channel 3 and sand export 7, the trumpet type of described sand inlet 1 in outward opening, after the sand ball sprayed into by horn mouth like this enters flow-guiding channel 3, space diminishes, and then spray, this design can improve the speed of sand ball further, and then further improve the shot-peening quality of steel pipe internal-surface, described plug stifled 10 is connected with pipeline 4 at sand export 7 place, it is the tapered end face protruded that described plug blocks up 10 end faces inwardly, sand export 7 forms ring cavity 5 with the link of flow-guiding channel 3 with this tapered end face, described pipeline 4 ring cavity 5 correspondence tube wall surface thereof be provided with multiple through hole 6, and the center line of described through hole 6 is identical with the angle that the bus of tapered end face and the center line of flow-guiding channel 3 are formed with the angle that the center line of flow-guiding channel 3 is formed, this design ensure that the operation of the shot-peening entering pipeline 4 is unobstructed, and can be ejected by through hole 6 smoothly.Described sand export 7 is being trumpet type with flow-guiding channel 3 link, and this horn-type opening outwardly.Ring cavity 5 is now made up of the inwall of tapered end face, sand export 7 and trumpet type joint face, and this design can ensure that the circulation of sand ball in pipeline 4 is smooth and easy further.The angle that the center line of the through hole 6 in the present invention and the center line of flow-guiding channel 3 are formed is 45 °.Described plug stifled 10 and sand export 7 are threaded, this design conveniently can change plug stifled 10, reduce cost and further improve efficiency, block up 10 one end outwardly at this plug to be in addition provided with and to tighten element 8, decorative pattern 9 has been rolled in described side of tightening element 8, be easy to operate plug stifled 10 by the decorative pattern 9 rolled, time saving and energy saving.Radially be provided with 2 ~ 3 grooves 2 at the outer surface of sand inlet 1 in the design, sand inlet 1 is connected with delivery hose, and the design of groove 2 can increase the frictional force of flexible pipe and pipeline 4, and then makes the connection of flexible pipe and pipeline 4 more firm.Described plug blocks up as T10 carbon tool steel, and this design ensure that the hardness of tapered end face.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (7)
1. ball blast spray gun special in a steel pipe, it is characterized in that: comprise pipeline and fill in stifled, this pipeline comprises the sand inlet be communicated with successively, flow-guiding channel and sand export, described sand inlet is the trumpet type of outward opening, described plug gets lodged in sand export place and is connected with pipeline, the described plug end face blocked up inwardly is the tapered end face protruded, link and this tapered end face of sand export and flow-guiding channel form ring cavity, described pipeline is provided with multiple through hole tube wall surface thereof corresponding to ring cavity, and the center line of described through hole is identical with the angle that the bus of tapered end face and the center line of flow-guiding channel are formed with the angle that the center line of flow-guiding channel is formed.
2. ball blast spray gun special in a kind of steel pipe according to claim 1, is characterized in that: described sand export is being trumpet type with flow-guiding channel link, and this horn-type opening outwardly.
3. ball blast spray gun special in a kind of steel pipe according to claim 1, is characterized in that: the angle that the center line of described through hole and the center line of flow-guiding channel are formed is 45 °.
4. ball blast spray gun special in a kind of steel pipe according to claim 1, is characterized in that: described plug is stifled to be threaded with sand export.
5. ball blast spray gun special in a kind of steel pipe according to claim 1 or 4, is characterized in that: described plug one end blocked up outwardly is provided with tightens element, described in tighten element side rolled decorative pattern.
6. ball blast spray gun special in a kind of steel pipe according to claim 1, is characterized in that: described pipeline is radially provided with 2 ~ 3 grooves at the outer surface of sand inlet.
7. ball blast spray gun special in a kind of steel pipe according to claim 1 or 4, is characterized in that: described plug blocks up as T10 carbon tool steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377196.6A CN105313021A (en) | 2014-07-30 | 2014-07-30 | Spray gun special for shot blasting in steel pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377196.6A CN105313021A (en) | 2014-07-30 | 2014-07-30 | Spray gun special for shot blasting in steel pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105313021A true CN105313021A (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410377196.6A Pending CN105313021A (en) | 2014-07-30 | 2014-07-30 | Spray gun special for shot blasting in steel pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105313021A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107617981A (en) * | 2017-10-11 | 2018-01-23 | 中国航发北京航空材料研究院 | A kind of spray gun and intensifying method of shot peening strengthening big L/D ratio blind hole |
| CN110214974A (en) * | 2019-07-16 | 2019-09-10 | 广东来福烟具有限公司 | Cigarette holder perfume (or spice) pearl adder |
-
2014
- 2014-07-30 CN CN201410377196.6A patent/CN105313021A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107617981A (en) * | 2017-10-11 | 2018-01-23 | 中国航发北京航空材料研究院 | A kind of spray gun and intensifying method of shot peening strengthening big L/D ratio blind hole |
| CN107617981B (en) * | 2017-10-11 | 2019-03-01 | 中国航发北京航空材料研究院 | A kind of spray gun and intensifying method of shot peening strengthening big L/D ratio blind hole |
| CN110214974A (en) * | 2019-07-16 | 2019-09-10 | 广东来福烟具有限公司 | Cigarette holder perfume (or spice) pearl adder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160210 |