CN203245739U - Device for descaling inner walls of steel pipes with diameters between 20 mm and 100 mm - Google Patents
Device for descaling inner walls of steel pipes with diameters between 20 mm and 100 mm Download PDFInfo
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- CN203245739U CN203245739U CN 201320214282 CN201320214282U CN203245739U CN 203245739 U CN203245739 U CN 203245739U CN 201320214282 CN201320214282 CN 201320214282 CN 201320214282 U CN201320214282 U CN 201320214282U CN 203245739 U CN203245739 U CN 203245739U
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- wall
- steel pipe
- voltage tube
- pipe
- way pipe
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Abstract
The utility model discloses a device for descaling the inner walls of steel pipes with diameters between 20 mm and 100 mm. The device comprises a three-way pipe and a high-pressure pipe, wherein the high-pressure pipe penetrates through two interfaces of the three-way pipe; the outlet end of the high-pressure pipe is connected with a flow equalization head. Through the coordination of the high-pressure pipe and three-way pipe, high-pressure gas flows (or high-pressure water flows) and mortar are directly mixed in the inner chamber of a steel pipe to-be-descaled to form high-speed grinding material jets to strike the inner wall of the steel pipe, so as to realize the continuous efficient and environment-friendly removal of scales on the inner wall of the steel pipe. Compared with the prior art, the device successfully solves the problem of scales on the inner wall of a steel pipe with an inside diameter between 20 mm and 100 mm, is high in descaling efficiency, does not pollute the environment, takes water (or air) and mortar as raw materials, and is low in descaling cost, wherein the water and the mortar can be recycled. According to the device, the mixing nozzle of the conventional grinding material water jet head is removed; the structure is simple; the size is compact; the operation is easy; the application range is wide, so that the device can be applicable to various fields of inner wall cleaning such as descaling and derusting the inner walls of steel pipes.
Description
Technical field
The utility model relates to a kind of device for internal diameter minor-diameter steel-tube inwall de-scaling between 20-100mm.
Background technology
Steel pipe is in hot rolling or heat treatment process, can form on the surface the fine and close covering that one deck is comprised of metal oxide, be commonly called as " firecoat ", the existence of this firecoat is processed the further processing of steel pipe and is caused significant impact, as in follow-up drawing, reaming are processed, easily firecoat is pressed into metal surface, cause surface quality problems, in addition, hard firecoat can scratch plug, has accelerated the wearing and tearing of drawbench or punch.Based on this problem, the steel pipe after hot rolling and the heat treatment all will thoroughly be removed its surperficial firecoat before entering aftertreatment technology.
At present steel tube surface de-scaling is both at home and abroad adopted traditional pickling, shot-peening or ball blast more, processing strips off the skin.Because the pickling meeting produces spent acid and acid mist, shot-peening or ball blast, the processing that strips off the skin can produce a large amount of dust, and these methods are very large to the healthy adverse effect of surrounding environment and direct labor in process of production; As emerging high-pressure grinding material water jet technique of scale removal, can solve environmental issue, but be subjected to structure and the steel duct spatial limitation of executing agency, comprise shot-peening, ball blast, strip off the skin and general abrasive water-jet can't be processed basically for the minor-diameter steel-tube inwall firecoat below the internal diameter φ 100mm.
By consulting patent documentation, to the document of steel pipe inner wall technology of acidless scale removal aspect under the normal temperature also seldom, particularly for the steel pipe inner wall de-scaling of minor diameter, a kind of technology and equipment of good processing is not also proposed at present both at home and abroad.For improving above defective, be badly in need of a kind of efficient high, environment amenable, and can process the inwall technology of acidless scale removal of this minor-diameter steel-tube.
The utility model content
The purpose of this utility model is to provide that a kind of de-scaling efficient is high, steel pipe inner wall descaling device and the descaling method of the minor diameter of environmental protection (20-100mm).
This steel pipe inner wall descaling device that the utility model provides, it comprises three-way pipe and high-voltage tube, and high-voltage tube passes two interfaces of three-way pipe, and its port of export is connected with the current-sharing head.
Described three-way pipe comprises two interfaces and angle stake of coaxial line, and two interface end of coaxial line are circumscribed with the flange that is respectively applied to connect described high-voltage tube and treats the de-scaling steel pipe.Angle stake is slurry channel.
The length of described high-voltage tube greater than three-way pipe and treat de-scaling steel pipe length and, the arrival end inwall of three-way pipe has the black box with the high-voltage tube matched in clearance; The outer wall that high-voltage tube stretches out the threeway pipeline section has and the guide support piece for the treatment of de-scaling pipe diameter coupling, and the port of export has internal thread; Black box comprises some to graphite-seal ring and packing ring, presses alternately layout of graphite-seal ring, packing ring.
The multisection type cylindrical structure that described current-sharing head is coaxial line, its front end is that the taper, the end that play the guiding role are be used as handle square, mid portion comprises three sections from front to back successively, the diameter of first paragraph and the 3rd section is greater than second segment, the outer wall of first paragraph is evenly equipped with some arc grooves vertically, on the entity between the adjacent arc groove external screw thread is arranged, the length of arc groove extends to second segment, and the 3rd section front end is taper; Between current-sharing head and the described high-voltage tube transit joint is arranged, the front end outer wall of transit joint has the external screw thread with high-voltage tube port of export internal thread coupling, its axial centre has the back segment aperture greater than the shoulder hole of leading portion, the front portion of this hole back segment have with described current-sharing head on the internal thread of external screw thread coupling.
The utility model is by the cooperation of high-voltage tube and three-way pipe, so that high pressure draught or current and mortar directly mix at the inner chamber for the treatment of the de-scaling steel pipe, form abradant jet at a high speed its inwall hit, realize to the steel pipe inner wall firecoat continuously, the removing of efficient, environmental protection.Compare with prior art, successful solution the inwall de-scaling problem of internal diameter minor-diameter steel-tube between 20-100mm, and de-scaling efficient is high, environmentally safe, as raw material, and water and mortar are recyclable with water or air, mortar, the de-scaling cost is low.Cancelled in addition the mixing nozzle of conventional abrasive waterjet nozzle, thus simple in structure, volume is small and exquisite, equipment operating is easy, and applied range, can be used for the field that the various needs such as steel pipe inner wall de-scaling, rust cleaning carry out inner wall washing.
Description of drawings
Fig. 1 is the structural representation of the utility model preferred embodiment.
Fig. 2 is the A section enlarged diagram among Fig. 1.
Fig. 3 is that the master of current-sharing head among Fig. 1 looks schematic diagram.
Fig. 4 is the elevational schematic view of Fig. 3.
Fig. 5 is the schematic top plan view of Fig. 3.
The specific embodiment
Preferred embodiment, to shown in Figure 5, this steel pipe inner wall descaling device that the utility model provides comprises a three-way pipe 1 and a high-voltage tube 2 such as Fig. 1, the end of high-voltage tube 2 is connected with current-sharing 4 by transit joint 3.Three-way pipe 1 comprises two interfaces and angle stake of coaxial line, and high-voltage tube 2 passes two interfaces of three-way pipe 1 coaxial line, and this two interface end is circumscribed with the flange 5 that is respectively applied to connect high-voltage tube 2 and treats de-scaling steel pipe 11.The arrival end inwall of three-way pipe 1 has the black box 6 with high-voltage tube 2 matched in clearance, plays sealing function by supporting flange 8 press seal assemblies 6; Treat that de-scaling steel pipe 11 is connected with clamp flange 10 by holding screw, clamp flange 10 is connected by the flange 5 of bolt with three-way pipe 1 port of export, and three-way pipe 1 is communicated with treating de-scaling steel pipe 11.The length of high-voltage tube 2 greater than three-way pipe 1 and treat de-scaling steel pipe 11 length and, the outer wall that high-voltage tube 2 stretches out 1 outer section of three-way pipe has and treats the guide support piece 7 of de-scaling steel pipe 11 internal diameters coupling, the port of export has internal thread.Guide support piece 7 be used for guaranteeing when high-voltage tube 2 moves axially in treating de-scaling steel pipe 11 smooth and easy and scale removal effect evenly.Black box 6 comprises three pairs of graphite-seal rings 61 and packing ring 62, presses alternately layout of graphite-seal ring 61, packing ring 62.The front end of transit joint 3 has the external screw thread with high-voltage tube 2 port of export internal threads coupling, and there is internal thread the rear end, and its axial centre is through hole.Current-sharing 4 is the multisection type cylindrical structure of coaxial line, its front end is that the taper, the end that play the guiding role are be used as handle square, mid portion comprises three sections from front to back successively, the diameter of first paragraph and the 3rd section is greater than second segment, the outer wall of first paragraph is evenly equipped with some arc grooves 41 vertically, on the entity between the adjacent arc groove 41 external screw thread is arranged, the length of arc groove 41 extends to second segment, and the 3rd section front end is taper; The front end outer wall of transit joint 3 has the external screw thread with high-voltage tube 2 port of export internal threads couplings, and its axial centre has the back segment aperture greater than the shoulder hole of leading portion, the front portion of this hole back segment have with current-sharing 4 on the internal thread of external screw thread coupling.
First high-voltage tube 2, transit joint 3 and current-sharing 4 and guide support piece 7 are assembled, guarantee their coaxial lines.Then with above-mentioned assembly parts and three-way pipe 1, treat that de-scaling steel pipe 11 assembles, respectively by black box 6 be connected flange 8, seal washer 9 and be connected with clamp flange and connect the location, guarantee that they are coaxial to center line.
The angle stake of three-way pipe 1 is the mortar entrance, can link to each other with the slag stock pump.During de-scaling, in high-voltage tube 2, pass into water under high pressure or gas, high-pressure fluid in the high-voltage tube 2 is divided into uniform several strands by the arc groove 41 of current-sharing 4, then diffusing into the taper jetting stream along the taper seat of its back segment mixes with high pressure mortar in the three-way pipe 1, formation abradant jet is at a high speed treated the inner wall surface of de-scaling steel pipe 11 and is evenly washed away strike, removes dirt and the oxide of its inwall.
Concrete steps during de-scaling are as follows:
Step 1, employing granularity are 20-80 purpose garnet and water mixed configuration mortar mixture, and garnet volumetric concentration is 20%-50% in the mortar, and occurrence determines according to different tube diameters and operating mode.
Claims (4)
1. one kind is used for diameter at the steel pipe inner wall descaling device of 20-100mm, and it is characterized in that: this device comprises three-way pipe and high-voltage tube, and high-voltage tube passes two interfaces of three-way pipe, and its port of export is connected with the current-sharing head.
2. as claimed in claim 1 for the steel pipe inner wall descaling device of diameter at 20-100mm, it is characterized in that: described three-way pipe comprises two interfaces and angle stake of coaxial line, and two interface end of coaxial line are circumscribed with the flange that is respectively applied to connect described high-voltage tube and treats the de-scaling steel pipe.
3. as claimed in claim 1 for the steel pipe inner wall descaling device of diameter at 20-100mm, it is characterized in that: the length of described high-voltage tube greater than three-way pipe and treat de-scaling steel pipe length and, the arrival end inwall of three-way pipe has the black box with the high-voltage tube matched in clearance; The outer wall that high-voltage tube stretches out the threeway pipeline section has and the guide support piece for the treatment of de-scaling pipe diameter coupling, and the port of export has internal thread; Black box comprises some to graphite-seal ring and packing ring, presses alternately layout of graphite-seal ring, packing ring.
4. as claimed in claim 1 for the steel pipe inner wall descaling device of diameter at 20-100mm, it is characterized in that: the multisection type cylindrical structure that described current-sharing head is coaxial line, its front end is that the taper, the end that play the guiding role are be used as handle square, mid portion comprises three sections from front to back successively, the diameter of first paragraph and the 3rd section is greater than second segment, the outer wall of first paragraph is evenly equipped with some arc grooves vertically, on the entity between the adjacent arc groove external screw thread is arranged, the length of arc groove extends to second segment, and the 3rd section front end is taper; Between current-sharing head and the described high-voltage tube transit joint is arranged, the front end outer wall of transit joint has the external screw thread with high-voltage tube port of export internal thread coupling, its axial centre has the back segment aperture greater than the shoulder hole of leading portion, the front portion of this hole back segment have with described current-sharing head on the internal thread of external screw thread coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320214282 CN203245739U (en) | 2013-04-25 | 2013-04-25 | Device for descaling inner walls of steel pipes with diameters between 20 mm and 100 mm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320214282 CN203245739U (en) | 2013-04-25 | 2013-04-25 | Device for descaling inner walls of steel pipes with diameters between 20 mm and 100 mm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203245739U true CN203245739U (en) | 2013-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320214282 Withdrawn - After Issue CN203245739U (en) | 2013-04-25 | 2013-04-25 | Device for descaling inner walls of steel pipes with diameters between 20 mm and 100 mm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203245739U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231315A (en) * | 2013-04-25 | 2013-08-07 | 湖南有色重型机器有限责任公司 | Descaling device at inner wall of steel tube with 20-100mm of diameter |
| CN108942696A (en) * | 2017-05-17 | 2018-12-07 | 上海图博可特石油管道涂层有限公司 | A kind of 360 degree of sandblasting spray heads |
-
2013
- 2013-04-25 CN CN 201320214282 patent/CN203245739U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231315A (en) * | 2013-04-25 | 2013-08-07 | 湖南有色重型机器有限责任公司 | Descaling device at inner wall of steel tube with 20-100mm of diameter |
| CN108942696A (en) * | 2017-05-17 | 2018-12-07 | 上海图博可特石油管道涂层有限公司 | A kind of 360 degree of sandblasting spray heads |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131023 Effective date of abandoning: 20150617 |
|
| RGAV | Abandon patent right to avoid regrant |