CN109420817B - Burner nozzle hole structure of flame cleaning machine and slag cleaning method thereof - Google Patents
Burner nozzle hole structure of flame cleaning machine and slag cleaning method thereof Download PDFInfo
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- CN109420817B CN109420817B CN201710718848.1A CN201710718848A CN109420817B CN 109420817 B CN109420817 B CN 109420817B CN 201710718848 A CN201710718848 A CN 201710718848A CN 109420817 B CN109420817 B CN 109420817B
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- burner
- section
- inner sleeve
- isosceles trapezoid
- installation section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/06—Machines, apparatus, or equipment specially designed for scarfing or desurfacing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gas Burners (AREA)
Abstract
The invention discloses a burner orifice structure of a scarfing machine and a slag removal method thereof, and the burner orifice structure comprises a burner orifice body, wherein the burner orifice body is communicated with a header pipe, the burner orifice body comprises an installation section, a transition section and an air outlet section which are connected from outside to inside, the transition section is arranged in an isosceles trapezoid shape, the section of the isosceles trapezoid short side is communicated with the air outlet section, the diameter of the isosceles trapezoid short side is the same as that of the air outlet section, the section of the isosceles trapezoid long side is communicated with the installation section, and the diameter of the isosceles trapezoid long side is the same as that of the installation section; still include interior sleeve pipe, during the installation section was located to interior sleeve pipe, interior sheathed tube length was greater than the length of installation section, and the hole setting of interior sleeve pipe lower extreme is the interior toper of outside flaring, has seted up one arc recess on the surface of interior sleeve pipe lower extreme, has still seted up the excircle chamfer on the interior sleeve pipe lower extreme terminal surface. The invention can avoid the current situation of incomplete cleaning in the prior art, and can protect the integrity of the burner holes from being damaged.
Description
Technical Field
The invention relates to billet surface cleaning equipment, in particular to a burner hole structure of a flame cleaning machine and a slag cleaning method thereof.
Background
The scarfing machine is a kind of introduced billet surface cleaning equipment, the surface smoothing of the billet is realized by the high temperature flame sprayed by the scarfing machine, and the high temperature flame is realized by the spraying of the evacuation burner on the scarfing machine, so there is a high requirement for the smooth air flow of each burner hole of the evacuation burner, usually, the burner holes are replaced regularly, or the fluency of the burner holes is maintained by manually cleaning the burner holes.
As shown in fig. 1, because of the particularity of the through structure inside the burner orifice 1, the manual cleaning at present usually directly pushes the slag 2 adhered in the burner orifice 1 into the burner orifice 1 for cleaning, although this cleaning method can quickly and directly clean the slag 2 in the burner orifice 1, because the flame cleaner adopts a main pipe continuous row hole type burner orifice, the slag 2 pushed into the burner orifice 1 enters the main pipe 3, once the flame cleaner is pressurized to start working, the slag 2 pushed into the main pipe 3 is blown to other burner orifices 1 connected with the main pipe 3 and the original burner orifices 1 again to block the air intake, so that the individual burner orifices 1 are still blocked and cannot be cleaned completely and effectively, so the effect is not obvious, and finally, in case that one burner orifice 1 is blocked, the burner holes 1 and even the entire row of burner holes 1 need to be replaced.
In addition, the frequent cleaning of the burner holes has great abrasion on the surfaces of the burner holes, which can cause the aperture of the burner holes to be enlarged, influence the shape change of the jet flame of the burner holes, influence the process effect, and finally cause the need of replacing a single burner hole or a whole row of burner holes.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a burner hole structure of a scarfing machine and a slag removal method thereof, which can avoid the current situation of incomplete cleaning in the prior art, and can protect the integrity of the burner hole from being damaged.
In order to achieve the purpose, the invention adopts the following technical scheme:
on one hand, the burner hole structure of the scarfing machine comprises a burner hole body, wherein the burner hole body is communicated with a header pipe, the burner hole body comprises an installation section, a transition section and a gas outlet section which are connected from outside to inside, the transition section is arranged in an isosceles trapezoid shape, the end of the short side of the isosceles trapezoid is communicated with the gas outlet section, the diameter of the end of the short side of the isosceles trapezoid is the same as that of the gas outlet section, the end of the long side of the isosceles trapezoid is communicated with the installation section, and the diameter of the end of the long side of the isosceles trapezoid is the same as that of the installation section;
still include interior sleeve pipe, during the installation section was located to interior sleeve pipe, interior sheathed tube length was greater than the length of installation section, and interior footpath of interior sheathed tube external diameter and installation section is interference fit between, and the hole setting of interior sleeve pipe lower extreme is the interior toper of outside flaring, has seted up one arc recess on the surface of interior sleeve pipe lower extreme, has still seted up the excircle chamfer on the interior sleeve pipe lower extreme terminal surface.
The included angle of two equal waist edges of the isosceles trapezoid ranges from 45 degrees to 60 degrees.
The length of the mounting section is more than or equal to 5 mm.
The taper of the inner cone is 1/10-1/5.
The arc-shaped groove is arranged on the outer surface of the inner sleeve corresponding to the inner conical root and the inner hole cross-connecting line.
The depth of the arc-shaped groove is less than 1/2 of the wall thickness of the inner sleeve pipe.
The arc surface length of the outer circle chamfer is 0.5-1 mm.
The wear resistance of the inner sleeve is smaller than that of the burner hole body.
On the other hand, the slag removing method for the burner nozzle hole structure of the scarfing machine comprises the following steps:
s1, inserting the lower end of an inner sleeve into an installation section until the lower end of the installation section is positioned at the bottom of the installation section;
s2, applying external force to the top end of the inner sleeve to enable the lower end of the inner sleeve to be pressed continuously until the aperture of the lower end of the inner sleeve is gradually reduced along with the aperture of the transition section in the transition section;
s3, pushing the metal slag generated in the burner hole body to a position where the aperture of the lower end of the inner sleeve is reduced;
s4, screwing a wood bolt into the inner hole at the top end of the inner sleeve, embedding the thread into the inner wall of the inner hole, and pulling out the wood bolt to take out the inner sleeve together with the metal slag;
and S5, replacing a new inner sleeve in the burner hole body.
In the step S2, after the inner sleeve pipe is pressed into the transition section and cannot move forward, the application of the external force is stopped, and the top end of the inner sleeve pipe and the plane of the burner hole body are polished to be flush.
In the technical scheme, the burner hole structure of the scarfing machine and the slag removing method thereof provided by the invention can effectively clean the through hole on the blocked single side, can also effectively protect the fixed structure of the burner hole body, and can prolong the service life of the burner hole body.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration;
FIG. 2 is a schematic structural view of the burner orifice body of the present invention;
FIG. 3 is a schematic view of the construction of the inner casing of the present invention;
FIG. 4 is a schematic view of the inner casing of the present invention inserted into the mounting section;
FIG. 5 is a schematic view of the inner sleeve of the present invention fully inserted into the mounting section;
FIG. 6 is a schematic view of the metal slag pushed to the lower end of the inner casing;
fig. 7 is a schematic view of the wood bolt with the inner tube pulled out.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment.
Referring to fig. 2 to 3, the burner hole structure of a scarfing machine provided by the present invention includes a burner hole body 4, the burner hole body 4 is communicated with a header pipe, the burner hole body 4 includes an installation section 401, a transition section 402 and an air outlet section 403 which are connected in sequence from outside to inside, the transition section 402 is configured to have an isosceles trapezoid shape in cross section, the end of the shorter side of the isosceles trapezoid is communicated with the air outlet section 403, the end of the shorter side of the isosceles trapezoid is the same as the diameter of the air outlet section 403, the diameter of the air outlet section 403 is the same as the diameter of the original burner hole, the end of the longer side of the isosceles trapezoid is communicated with the installation section 401, the end of the longer side of the isosceles trapezoid is the same as the diameter of the installation section 401, the installation section 401 is subjected to reaming treatment in the original burner hole, the installation section 401 is enlarged by 2 to 5mm based on the original burner hole diameter, the length of the installation section 401 is more than 5mm, after reaming, the, the included angle of two equal waist edges of the transition section 402 isosceles trapezoid is 45-60 degrees,
the inner sleeve is characterized by further comprising a circular inner sleeve 5, the inner sleeve 5 is arranged in the mounting section 401, the length of the inner sleeve 5 is larger than that of the mounting section 401 and exceeds about 2-5 mm, the outer diameter of the inner sleeve 5 is in interference fit with the inner diameter of the mounting section 401, an inner hole at the lower end of the inner sleeve 5 is provided with an inward taper 501 flaring outwards, the taper of the inward taper 501 is 1/10-1/5, in order to facilitate the closing-up deformation of the inward taper 501 when the inner sleeve 5 is pressed downwards, an arc-shaped groove 502 is formed in the outer surface of the lower end of the inner sleeve 5, the depth of the arc-shaped groove 502 is smaller than 1/2 of the thickness of the inner sleeve 5, the arc-shaped groove 502 is formed in the outer surface of the inner sleeve 5 corresponding to the joint line of the inner hole 503 of the inner sleeve 5 at the root of the inner taper 501, if the outer chamfer 504 is not provided, the end surface of the lower end of the inner sleeve 5 is offset with the transition section 402 by an inclination angle, so that the difficulty of pressing the inner sleeve 5 into the transition section 402 is increased, and the subsequent steps cannot be implemented or are difficult to implement.
Preferably, the wear resistance of the material of the inner sleeve 5 is less than that of the material of the burner hole body 4, and the inner sleeve 5 is a spare part and needs to be replaced frequently.
Referring to fig. 3 to 7, the method for removing slag from a burner hole structure of a scarfing machine provided by the present invention includes the following steps:
s1, inserting the lower end (the end with the inner taper 501) of the inner sleeve 5 into the mounting section 401 until the bottom of the mounting section 401 (i.e. the position where it meets the transition section 402);
s2, applying external force to the top end of the inner sleeve 5 to enable the lower end of the inner sleeve 5 to be pressed continuously until the outer chamfer 504 at the lower end of the inner sleeve 5 is extruded downwards in the transition section 402, reducing the deformation strength of the inner taper 501 due to the action of the inner taper 501 in the advancing process, closing up the inner taper 501, reducing the caliber of the inner taper 501, enabling the caliber of the lower end of the inner sleeve 5 to be gradually reduced along with the caliber of the transition section 402, ensuring that the included angles of two isosceles trapezoids of the outer chamfer 504 and the transition section 402 are in a non-contact clearance state, adopting a cylinder with the same size as the caliber of an inner hole 503 of the inner sleeve 5 as a metal slag 6 blocking the burner hole body 4, extending into the inner hole 503 to perform a penetration forward test until the cylinder extends to the position of the;
s3, pushing the metal slag 6 which cannot be cleaned in the nozzle hole body 4 (the part of the metal slag 6 which is sunk into the nozzle hole body 4 and cannot be removed) to the position of the inner conical shape 501 at the lower end of the inner sleeve 5 by using the existing tool (push pin), preferably pushing the metal slag to the depth of one half to one third of the inner sleeve 5, and not exceeding the bottom end surface of the inner conical shape 501;
s4, screwing a wood bolt 7 into an inner hole at the top end of the inner sleeve 5, embedding the thread into the inner wall of the inner hole 503, and pulling out the wood bolt 7 to enable the inner sleeve 5 to be taken out together with the metal slag 6;
and S5, replacing the inner sleeve 5 in the burner hole body 4 with a new one.
In the step S2, the inner sleeve 5 is pressed into the transition section 402 and then stops applying the external force, and the top end of the inner sleeve 5 and the plane of the burner hole body 4 are polished to be flush.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. A burner hole structure of a scarfing machine comprises a burner hole body, wherein the burner hole body is communicated with a header pipe, and the burner hole structure is characterized in that the burner hole body comprises an installation section, a transition section and a gas outlet section which are connected from outside to inside, the transition section is arranged in an isosceles trapezoid shape, the end of the short side of the isosceles trapezoid is communicated with the gas outlet section, the diameter of the end of the short side of the isosceles trapezoid is the same as that of the gas outlet section, the end of the long side of the isosceles trapezoid is communicated with the installation section, and the diameter of the end of the long side of the isosceles trapezoid is the same as that of the installation section;
still include interior sleeve pipe, during the installation section was located to interior sleeve pipe, interior sheathed tube length was greater than the length of installation section, is interference fit between the internal diameter of interior sheathed tube external diameter and installation section, and the hole setting of interior sleeve pipe lower extreme is the interior toper of outside flaring, has seted up one arc recess on the surface of interior sleeve pipe lower extreme, has still seted up the excircle chamfer on the interior sleeve pipe lower extreme terminal surface.
2. The burner orifice structure of a scarfing machine of claim 1 wherein the angle between the two isosceles sides of the isosceles trapezoid is 45 ° to 60 °.
3. The burner orifice structure of a scarfing machine of claim 1 wherein the length of the mounting section is greater than or equal to 5 mm.
4. The burner orifice structure of a scarfing machine of claim 1 wherein the internal taper has a taper of 1/10-1/5.
5. The burner orifice structure of a scarfing machine of claim 1 wherein the arcuate groove is formed in the outer surface of the inner sleeve at the root of the inner taper corresponding to the intersection of the inner orifice.
6. The burner orifice structure of a scarfing machine of claim 5 wherein the depth of said arcuate groove is less than 1/2 mm of the inner sleeve wall thickness.
7. The burner orifice structure of a scarfing machine of claim 1 wherein the length of the arc of the outer chamfer is 0.5 to 1 mm.
8. The burner orifice structure of a scarfing machine of claim 1 wherein the inner sleeve has a material wear resistance less than the material wear resistance of the burner orifice body.
9. The utility model provides a scarfing cinder method of burner pore structure of scarfing machine, burner pore structure includes burner hole body and interior sleeve pipe, burner hole body includes installation section, changeover portion and the section of giving vent to anger that outside-in is connected, its characterized in that includes following steps:
s1, inserting the lower end of an inner sleeve into an installation section until the lower end of the installation section is positioned at the bottom of the installation section;
s2, applying external force to the top end of the inner sleeve to enable the lower end of the inner sleeve to be pressed continuously until the aperture of the lower end of the inner sleeve is gradually reduced along with the aperture of the transition section in the transition section;
s3, pushing the metal slag generated in the burner hole body to a position where the aperture of the lower end of the inner sleeve is reduced;
s4, screwing a wood bolt into the inner hole at the top end of the inner sleeve, embedding the thread into the inner wall of the inner hole, and pulling out the wood bolt to take out the inner sleeve together with the metal slag;
and S5, replacing a new inner sleeve in the burner hole body.
10. The method of claim 9, wherein in step S2, the inner sleeve is pressed into the transition section and then cannot move forward, and the external force is stopped, and the top end of the inner sleeve and the nozzle hole body are polished to be flush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718848.1A CN109420817B (en) | 2017-08-21 | 2017-08-21 | Burner nozzle hole structure of flame cleaning machine and slag cleaning method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718848.1A CN109420817B (en) | 2017-08-21 | 2017-08-21 | Burner nozzle hole structure of flame cleaning machine and slag cleaning method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109420817A CN109420817A (en) | 2019-03-05 |
| CN109420817B true CN109420817B (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710718848.1A Active CN109420817B (en) | 2017-08-21 | 2017-08-21 | Burner nozzle hole structure of flame cleaning machine and slag cleaning method thereof |
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| Country | Link |
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| CN (1) | CN109420817B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798461B (en) * | 2021-11-08 | 2023-01-24 | 上海东震冶金工程技术有限公司 | Molten pool retainer of continuous casting billet scarfing machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0213766A1 (en) * | 1985-08-07 | 1987-03-11 | Kubota Ltd. | Suction head for slag removal |
| JPH0211275A (en) * | 1988-06-28 | 1990-01-16 | Nkk Corp | Device for removing interior welding slag of spiral steel pipe |
| CN202392807U (en) * | 2011-12-30 | 2012-08-22 | 中冶长天国际工程有限责任公司 | Burner system capable of preventing tar from blocking burner |
| CN203171113U (en) * | 2013-02-19 | 2013-09-04 | 宝山钢铁股份有限公司 | Split type lower preheating block of machine clearing nozzle and machine clearing nozzle |
| CN204308152U (en) * | 2014-09-03 | 2015-05-06 | 上海东震冶金工程技术有限公司 | The novel level and smooth burner of continuous casting billet flame descaling machine |
| CN105402730A (en) * | 2015-12-04 | 2016-03-16 | 江苏久联冶金机械制造有限公司 | Process for on-line cleaning to double rotational flow gas burner |
-
2017
- 2017-08-21 CN CN201710718848.1A patent/CN109420817B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0213766A1 (en) * | 1985-08-07 | 1987-03-11 | Kubota Ltd. | Suction head for slag removal |
| JPH0211275A (en) * | 1988-06-28 | 1990-01-16 | Nkk Corp | Device for removing interior welding slag of spiral steel pipe |
| CN202392807U (en) * | 2011-12-30 | 2012-08-22 | 中冶长天国际工程有限责任公司 | Burner system capable of preventing tar from blocking burner |
| CN203171113U (en) * | 2013-02-19 | 2013-09-04 | 宝山钢铁股份有限公司 | Split type lower preheating block of machine clearing nozzle and machine clearing nozzle |
| CN204308152U (en) * | 2014-09-03 | 2015-05-06 | 上海东震冶金工程技术有限公司 | The novel level and smooth burner of continuous casting billet flame descaling machine |
| CN105402730A (en) * | 2015-12-04 | 2016-03-16 | 江苏久联冶金机械制造有限公司 | Process for on-line cleaning to double rotational flow gas burner |
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| CN109420817A (en) | 2019-03-05 |
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