CN201648445U - Oblique-insertion spray gun for molten iron pretreatment - Google Patents
Oblique-insertion spray gun for molten iron pretreatment Download PDFInfo
- Publication number
- CN201648445U CN201648445U CN2010201467511U CN201020146751U CN201648445U CN 201648445 U CN201648445 U CN 201648445U CN 2010201467511 U CN2010201467511 U CN 2010201467511U CN 201020146751 U CN201020146751 U CN 201020146751U CN 201648445 U CN201648445 U CN 201648445U
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- spray gun
- steel pipe
- angle
- anchoring piece
- core steel
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Abstract
The utility model discloses an oblique-insertion spray gun for molten iron pretreatment, which comprises a gun core steel tube, a gun lining made of flame-proof material and a plurality of anchoring pieces, wherein one end of the gun core steel tube is bent to form a gun head, the gun lining made of flame-proof material is covered on the outer surface of the gun core steel tube, and the anchoring pieces are arranged on the outer surface of the gun core steel tube and positioned in the gun lining made of flame-proof material. The cross section of the gun core steel tube adopts an elliptic structure, and the bending direction of the gun head is the same as the direction of the long axis of the elliptic structure. The oblique-insertion spray gun has the advantages of good bending resistant effect, long service life and good injection pretreatment effect.
Description
Technical field
The utility model relates to steelmaking equipment, refers to a kind of angle-inserting type hot metal pretreatment spray gun that is used on the torpedo jar metal mixer car particularly.
Background technology
At present, spray gun angle-inserting type hot metal winding-up pretreatment technology has been widely used on the torpedo jar metal mixer car.When jetting pre-treatment, spray gun is gone in the torpedo jar metal mixer car from the horizontal by 60 ° of angle oblique cuttings, by carrier gas the solid pretreating agent is sprayed into the molten iron depths, finish hot metal pretreatment.In actual applications, there is the problem of lacking in badly broken, work-ing life in hot metal pretreatment spray gun, and this problem makes steel-making cost increase greatly, and because spray gun weight is big, it is very inconvenient to change.In this case, the whole bag of tricks is devised to prolong the work-ing life of spray gun.
Existing most of angle-inserting type hot metal pretreatment spray gun mainly delays the spray gun breakage by the thermal stresses of alleviating between steel pipe and the refractory materials, thereby prolongs the work-ing life of spray gun.Wherein, application number provides a kind of angle-inserting type hot metal pretreatment spray gun for 200810048586.3 Chinese invention patent, and this spray gun is a cylindrical structural, the one end is bent to form the rifle head, the rifle core is a steel pipe, and outer wall of steel pipe welding V-type anchoring piece is wrapped up in fire proofed wood spray gun lining outward.By the brushing of rifle core steel tube surface burn to lose coating and spray gun baking, the use floating coat burns and loses residual slight gap, thermal expansion mismatch problem between buffering rifle core steel pipe and the fire proofed wood spray gun lining, reduce the harm of spray gun complex structure stress, and the function of heat insulation by slight gap, reduce the integrated temperature of rifle core steel pipe under the working conditions, improve the intensity and the rigidity of rifle core steel pipe; By the reasonable Arrangement of unlike material and structure anchor spare and the appropriate design of rifle header structure, improve bonding strength, globality and the antiscour wearing and tearing ability of spray gun complex body, reach and delay damaged process of spray gun and the purpose that increases the service life.
Yet, another of the work-ing life that influences spray gun main aspect, i.e. the failure in bending of spray gun and rifle lining stretching cracking, infiltration, the scaling loss brought thus and the problem aspect such as peel off, this spray gun is not effectively improved.Therefore, need a kind of improved angle-inserting type hot metal pretreatment spray gun badly to overcome aforementioned disadvantages.
Summary of the invention
The purpose of this utility model is exactly that a kind of counter-bending effective, long service life and the good angle-inserting type hot metal pretreatment spray gun of winding-up pretreating effect will be provided.
For achieving the above object, the designed angle-inserting type hot metal pretreatment spray gun of the utility model comprises rifle core steel pipe, fire proofed wood spray gun lining and anchoring piece.Described rifle core steel pipe one end is bent to form the rifle head, and described fire proofed wood spray gun lining is placed on the outside surface of described rifle core steel pipe, and described anchoring piece is located at the outside surface of described rifle core steel pipe and is positioned at described fire proofed wood spray gun lining.The cross section ovalize structure of described rifle core steel pipe, the bending direction of described rifle head is identical with the long axis direction of described ellipsoidal structure.
Advantage of the present utility model is: the cross section ovalize structure of the rifle core steel pipe of designed angle-inserting type hot metal pretreatment spray gun, and the bending direction of described rifle head is identical with the long axis direction of described ellipsoidal structure, thereby the intensity and the rigidity of rifle core steel pipe have been improved, finally improve the counter-bending ability of spray gun, prolonged the work-ing life of spray gun.In addition, the warp architecture of rifle head is induced the come-up of circle round eddy current and the winding-up carrier gas and the sweetening agent of molten iron, has slowed down rifle end surface erosive wear process; Rifle head medullary ray is set to the horizontal curvature structure, can increase winding-up effusive operating distance and stirring region, improves the mixed effect of winding-up carrier gas and pulvis and molten iron.
Preferably, the cross section outline of described fire proofed wood spray gun lining be and the co-axial ellipsoidal structure of described rifle core steel pipe cross section, thereby the rifle of avoiding the irregular section thermal stresses to concentrate causing serves as a contrast and peels off and chap and can effectively alleviate the weight of spray gun.
Preferably, described anchoring piece comprises V-arrangement anchoring piece and two V butterfly anchoring piece, the height of described V-arrangement anchoring piece is 1/2～2/3 of fire proofed wood spray gun lining thickness, the height of described pair of V butterfly anchoring piece is 1/2～2/3 of fire proofed wood spray gun lining thickness, described V-arrangement anchoring piece and two V butterfly anchoring pieces vertically with circumferential fixed interval on the outside surface of described rifle core steel pipe.V-arrangement anchoring piece and two V butterfly anchoring piece are pressed with the upper type layout, can be strengthened the bonding strength between rifle core steel pipe and the fire proofed wood spray gun lining, improve the comprehensive strength and the rigidity of spray gun, further prevent spray gun flexural deformation.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model angle-inserting type hot metal pretreatment spray gun;
Fig. 2 is the cross section enlarged diagram of angle-inserting type hot metal pretreatment spray gun shown in Figure 1 along the A-A face;
Fig. 3 is the cross section enlarged diagram of angle-inserting type hot metal pretreatment spray gun shown in Figure 1 along the B-B face.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As Figure 1-3, the angle-inserting type hot metal pretreatment spray gun of present embodiment comprises rifle core steel pipe 1, fire proofed wood spray gun lining 2 and anchoring piece, described rifle core steel pipe 1 one ends are bent to form rifle head 3, described fire proofed wood spray gun lining 2 is covered in the outside surface of described rifle core steel pipe 1, and described anchoring piece is located at the outside surface of described rifle core steel pipe 1 and is positioned at described fire proofed wood spray gun lining 2.The cross section ovalize structure of described rifle core steel pipe 1, the bending direction of described rifle head 3 is identical with the long axis direction of described ellipsoidal structure, thereby improved the intensity and the rigidity of rifle core steel pipe, finally improved the counter-bending of spray gun, prolonged the work-ing life of spray gun.
As preferred embodiment of the present utility model, the cross section outline of described fire proofed wood spray gun lining 2 be and the co-axial ellipsoidal structure of described rifle core steel pipe 1 cross section, thereby the rifle of avoiding the irregular section thermal stresses to concentrate causing serves as a contrast and peels off and chap and can effectively alleviate the weight of spray gun.Fire proofed wood spray gun lining 2 can adopt " name is called refractory castable for desulfurizing spray gun, patent No. ZL03118869.9 " patented product to carry out vertical integrated poured moulding, to improve the performance uniformity and the resisting breakage ability of spray gun cross section fire proofed wood spray gun lining.
In the present embodiment, described anchoring piece comprises V-arrangement anchoring piece 4 and two V butterfly anchoring piece 5, the height of described V-arrangement anchoring piece 4 serves as a contrast 1/2～2/3 of 2 thickness for the fire proofed wood spray gun, the height of described pair of V butterfly anchoring piece 5 serves as a contrast 1/2～2/3 of 2 thickness for the fire proofed wood spray gun, described V-arrangement anchoring piece 4 and two V butterfly anchoring pieces 5 vertically with circumferential fixed interval on the outside surface of described rifle core steel pipe 1.Further, described V-arrangement anchoring piece 4 and two V butterfly anchoring pieces 5 press axial spacing 40～80mm, the circumferential interval layout of 60 ° of angles.Described V-arrangement anchoring piece 4 and two V butterfly anchoring pieces 5 can be that the heat-resistant alloy wire of 2～4mm constitutes by diameter.Particularly, the V-arrangement angle of described V-arrangement anchoring piece 4 is 60 °, and the described pair of V butterfly anchoring piece 5 is that the wedge angle with two V-arrangement anchoring pieces 4 is welded together to form, and the angle of the V-arrangement face of two V-arrangement anchoring pieces is 60 °.The V-arrangement anchoring piece 4 of employing different structure and two V butterfly anchoring piece 5 can be strengthened the bonding strength between rifle core steel pipe 1 and the fire proofed wood spray gun lining 2, improve the comprehensive strength and the rigidity of spray gun, further prevent spray gun flexural deformation.
Described rifle core steel pipe 1 is common seamless carbon steel tube.Preferably, the thickness of described rifle core steel pipe 1 can be 3mm～4mm.Described rifle head 3 is 120～140 ° with the angle α of the straight-line segment of described rifle core steel pipe 1, the size of this angle is by the oblique cutting angle decision of spray gun and horizontal direction, so that the medullary ray of described rifle head 3 can the maintenance level be as the criterion, thereby increase winding-up effusive operating distance and stirring region, improve the mixed effect of winding-up carrier gas and pulvis and molten iron.In addition, the warp architecture of rifle head 3 is induced the come-up of circle round eddy current and the winding-up carrier gas and the sweetening agent of molten iron, has slowed down rifle head 3 end face erosive wear processes.
Claims (10)
1. angle-inserting type hot metal pretreatment spray gun, comprise rifle core steel pipe (1), fire proofed wood spray gun lining (2) and anchoring piece, described rifle core steel pipe (1) one end is bent to form rifle head (3), described fire proofed wood spray gun lining (2) is covered in the outside surface of described rifle core steel pipe (1), described anchoring piece is located at the outside surface of described rifle core steel pipe (1) and is positioned at described fire proofed wood spray gun lining (2), it is characterized in that: the cross section ovalize structure of described rifle core steel pipe (1), the bending direction of described rifle head (3) is identical with the long axis direction of described ellipsoidal structure.
2. angle-inserting type hot metal pretreatment spray gun according to claim 1 is characterized in that: the cross section outline of described fire proofed wood spray gun lining (2) is and the co-axial ellipsoidal structure of described rifle core steel pipe (1) cross section.
3. angle-inserting type hot metal pretreatment spray gun according to claim 2, it is characterized in that: described anchoring piece comprises V-arrangement anchoring piece (4) and two V butterfly anchoring piece (5), the height of described V-arrangement anchoring piece (4) is 1/2～2/3 of fire proofed wood spray gun lining (2) thickness, the height of described pair of V butterfly anchoring piece (5) is 1/2～2/3 of fire proofed wood spray gun lining (2) thickness, described V-arrangement anchoring piece (4) and pair V butterfly anchoring piece (5) vertically with circumferential fixed interval on the outside surface of described rifle core steel pipe (1).
4. angle-inserting type hot metal pretreatment spray gun according to claim 3 is characterized in that: described V-arrangement anchoring piece (4) and two V butterfly anchoring piece (5) press the interval of 60 ° of axial spacing 40～80mm, circumferential angle.
5. according to claim 3 or 4 described angle-inserting type hot metal pretreatment spray guns, it is characterized in that: described V-arrangement anchoring piece (4) and two V butterfly anchoring piece (5) are that the heat-resistant alloy wire of 2～4mm constitutes by diameter.
6. according to each described angle-inserting type hot metal pretreatment spray gun in the claim 1 to 4, it is characterized in that: described rifle head (3) is 120～140 ° with the angle α of the straight-line segment of described rifle core steel pipe (1).
7. angle-inserting type hot metal pretreatment spray gun according to claim 5 is characterized in that: described rifle head (3) is 120～140 ° with the angle α of the straight-line segment of described rifle core steel pipe (1).
8. according to each described angle-inserting type hot metal pretreatment spray gun in the claim 1 to 4, it is characterized in that: described rifle core steel pipe (1) is a seamless carbon steel tube.
9. angle-inserting type hot metal pretreatment spray gun according to claim 5 is characterized in that: described rifle core steel pipe (1) is a seamless carbon steel tube.
10. according to each described angle-inserting type hot metal pretreatment spray gun in the claim 6, it is characterized in that: described rifle core steel pipe (1) is a seamless carbon steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201467511U CN201648445U (en) | 2010-03-30 | 2010-03-30 | Oblique-insertion spray gun for molten iron pretreatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201467511U CN201648445U (en) | 2010-03-30 | 2010-03-30 | Oblique-insertion spray gun for molten iron pretreatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201648445U true CN201648445U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201467511U Expired - Fee Related CN201648445U (en) | 2010-03-30 | 2010-03-30 | Oblique-insertion spray gun for molten iron pretreatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201648445U (en) |
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2010
- 2010-03-30 CN CN2010201467511U patent/CN201648445U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20160330 |