CN114367642A - Built-in filtering anti-blocking nozzle for secondary cooling of square and round billet continuous casting machine - Google Patents
Built-in filtering anti-blocking nozzle for secondary cooling of square and round billet continuous casting machine Download PDFInfo
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- CN114367642A CN114367642A CN202111649542.8A CN202111649542A CN114367642A CN 114367642 A CN114367642 A CN 114367642A CN 202111649542 A CN202111649542 A CN 202111649542A CN 114367642 A CN114367642 A CN 114367642A
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- 238000001816 cooling Methods 0.000 title claims abstract description 22
- 238000009749 continuous casting Methods 0.000 title claims abstract description 16
- 238000001914 filtration Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 105
- 239000007921 spray Substances 0.000 claims abstract description 81
- 238000002156 mixing Methods 0.000 claims abstract description 28
- 230000007704 transition Effects 0.000 claims abstract description 21
- 238000009826 distribution Methods 0.000 claims abstract description 3
- 238000005507 spraying Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 18
- 239000000243 solution Substances 0.000 description 10
- 238000005266 casting Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000002609 medium Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a built-in filtering anti-blocking nozzle for secondary cooling of a square and round billet continuous casting machine, which comprises a rectangular nozzle body, wherein the rear end surface of the nozzle body is provided with an air inlet and a water inlet, the front end surface of the nozzle body is provided with a mixing cavity, the mixing cavity is communicated with the air inlet, an air-water flow distribution core is fixedly installed in the mixing cavity, a spray head is fixedly installed in the front end of the mixing cavity, built-in filters are fixedly installed in the air inlet and the water inlet, a plurality of transition flow channels are connected in series in the nozzle body, the side wall of the water inlet is provided with a water inlet hole communicated with the transition flow channels, and the side wall of the mixing cavity is provided with a water outlet hole communicated with the transition flow channels. The invention has simple structure, convenient manufacture, long service life, sufficient air-water mixing and better cooling effect, and can effectively solve the problem that the air-water medium can not reach the standard and can be normally used, and is not easy to block.
Description
Technical Field
The invention relates to a built-in filtering anti-blocking nozzle for secondary cooling of a square and round billet continuous casting machine.
Background
The continuous casting process is actually a solidification heat transfer process from high-temperature molten steel to solid state, so that the solidification heat transfer process of the casting blank plays a crucial role in the quality of surface cracks, internal cracks, bulging and the like of the casting blank. In the process of solidification and heat transfer of a casting blank, water is mostly adopted as a cooling medium, in a certain sense, the continuous casting technology is a water cooling technology, namely, a solidification and heat transfer process of solidifying high-temperature molten steel into the casting blank through cooling water. The water cooling system is formed by arranging a plurality of nozzles around the casting blank according to a rule, when part of the nozzles are blocked, the casting blank at the corresponding position cannot be cooled to rapidly rise, the temperature rise can reach hundreds of degrees centigrade, the uneven cooling causes thermal stress, and finally the casting blank is cracked. The existing nozzle is easy to block when an air-water medium which does not reach the standard is used, so that the air-water mixing is insufficient, the spraying is uneven, and the cooling effect is poor.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the built-in filtering anti-blocking nozzle for secondary cooling of the square and round billet continuous casting machine, which has the advantages of simple structure, convenience in manufacturing, capabilities of effectively solving the problems that an air-water medium cannot reach the standard and can be normally used, difficulty in blockage, long service life, sufficient air-water mixing and better cooling effect.
Therefore, the technical scheme adopted by the invention is as follows:
the gas-water separator comprises a rectangular nozzle body, wherein an air inlet and a water inlet are formed in the rear end face of the nozzle body, a mixing cavity is formed in the front end face of the nozzle body and communicated with the air inlet, an air-water flow dividing core is fixedly installed in the mixing cavity, a spray head is fixedly installed in the front end of the mixing cavity, built-in filters are fixedly installed in the air inlet and the water inlet, a plurality of transition flow channels are connected in series in the nozzle body, a water inlet hole communicated with the transition flow channels is formed in the side wall of the water inlet, and a water outlet hole communicated with the transition flow channels is formed in the side wall of the mixing cavity;
the air-water diversion core comprises a circular seat, a convex column is arranged at the front end of the axis of the circular seat, a water inlet hole is formed in one side of the side wall of the circular seat, the side water inlet hole is communicated with a water outlet hole, a water spray hole communicated with the side water inlet hole is formed in the axis of the convex column, the rear end of the water spray hole is sealed, a plug is arranged at the front end of the water spray hole, a plurality of side water spray holes are uniformly formed in the side wall of the convex column and communicated with the water spray hole, a plurality of air holes penetrating through the front end face and the rear end face of the circular seat are uniformly distributed around the water spray holes, an air cavity communicated with the air inlet is arranged on the rear end face of the circular seat, and the air holes are communicated with the air cavity.
As a further improvement of the technical scheme, the built-in filter comprises a filter body, a filter cavity is arranged in the filter body, a plurality of rectangular filter holes are uniformly formed in the side wall of the filter body, and a plurality of circular filter holes are formed in the front end of the filter body.
As a further improvement of the technical scheme, be equipped with annular boss on the terminal external diameter of built-in filter, be equipped with the arc recess on annular boss's the surface, the port department internal surface of air inlet and water inlet is equipped with the step, annular boss installs in step department, the inner wall of air inlet and water inlet all is equipped with connects the internal thread, be equipped with on built-in filter's the surface and be connected internal thread matched with and be connected the external screw thread, be equipped with the sealing washer between arc recess and the step inner wall.
As a further improvement of the technical scheme, the number of the side water spray holes is consistent with that of the vent holes, and the side water spray holes are four and correspond to the vent holes one by one.
As a further improvement of the technical scheme, the plug is a T-shaped plug, and a vertical body of the T-shaped plug is in interference fit with the inner wall of the water spraying hole.
As a further improvement of the above technical solution, the spray head includes a spray head main body and an integrated flow-dividing core, a spray cavity is provided inside the rear end of the spray head main body, a spray hole communicated with the spray cavity is provided inside the front end of the spray head main body, the spray hole includes a tapered hole located at the front end of the spray cavity, a transition hole is provided at the front end of the tapered hole, and a horn spray hole is provided at the front end of the transition hole;
the integrated shunt core comprises a connecting seat and a core rod, the rear end of the core rod is fixedly connected with the connecting seat, a plurality of communicating holes are formed in the connecting seat, a conical section is arranged in the middle of the core rod, a straight line section is arranged at the front part of the core rod, and an umbrella-shaped cover is arranged at the front end of the core rod; the connecting seat is positioned in the spray cavity, and a spray circular seam is formed between the core rod and the spray hole.
As a further improvement of the technical scheme, the outer side of the rear end of the spray head main body is provided with an external thread, and the inner wall of the front end of the mixing cavity is provided with an internal thread connected with the external thread.
As a further improvement of the technical scheme, a clamping table is arranged at the joint of the spray cavity and the tapered hole, the front end face of the connecting seat is abutted against the clamping table, and the connecting seat is in interference fit with the inner wall of the spray cavity.
As a further improvement of the technical scheme, the plurality of communication holes are uniformly formed in the outer side surface of the connecting seat.
As a further improvement of the technical scheme, the connecting seat and the core rod are of an integrally formed structure.
The invention has the advantages that:
the invention has simple structure, convenient manufacture, normal use under the condition that the air-water medium does not reach the standard, difficult blockage and long service life, the water medium with certain pressure enters from the water inlet, large particle impurities are prevented from entering the nozzle body by filtering of the built-in filter, water is sent into the water spraying holes of the air-water diversion core through a plurality of transitional flow passages, then the water is uniformly sprayed to the mixing cavity through a plurality of side water spraying holes to form primary atomization, at the moment, compressed air enters the air cavity through the built-in filter, is sprayed out from the air holes to vertically impact with the pressure water which is primarily atomized at high speed and is fully mixed again, the mixed fluid is shunted by the diversion core to enter the inner cavity of the nozzle again for three times of mixing, and finally is sprayed out through the spray circumferential seams, so that the spraying is more uniform, and the cooling effect is better.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view showing the construction of the gas-water distribution wick of fig. 1.
Fig. 3 is a right side view of fig. 2.
Fig. 4 is a schematic structural view of the built-in filter of fig. 1.
Fig. 5 is a schematic structural view of the head of fig. 1.
Fig. 6 is a schematic structural view of the head body of fig. 5.
Fig. 7 is a schematic structural view of the integrated shunt core of fig. 5.
Fig. 8 is a top view of fig. 7.
In the figure, 1 is a nozzle body, 2 is an air inlet, 3 is a water inlet, 4 is a mixing cavity, 5 is an air-water shunt core, 6 is a nozzle, 7 is a built-in filter, 8 is a transition flow channel, 9 is a water inlet, 10 is a water outlet, 11 is a circular seat, 12 is a convex column, 13 is a side water inlet, 14 is a water spray hole, 15 is a plug, 16 is a side water spray hole, 17 is a vent hole, 18 is an air cavity, 19 is a filter body, 20 is a filter cavity, 21 is a rectangular filter hole, 22 is a circular filter hole, 23 is an annular boss, 24 is an arc-shaped groove, 25 is a sealing ring, 26 is a nozzle main body, 27 is an integrated shunt core, 28 is a spray cavity, 29 is a conical hole, 30 is a transition hole, 31 is a horn spray hole, 32 is a connecting seat, 33 is a core rod, 34 is a communication hole, 35 is a conical section, 36 is a straight section, 37 is an umbrella-shaped cover, 38 is an injection annular seam, and 39 is a clamping table.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A built-in filtering anti-blocking nozzle for secondary cooling of a square and round billet continuous casting machine comprises a rectangular nozzle body 1, wherein the rear end face of the nozzle body 1 is provided with an air inlet 2 and a water inlet 3, the front end face of the nozzle body 1 is provided with a mixing chamber 4, the mixing chamber 4 is communicated with the air inlet 2, an air-water flow distributing core 5 is fixedly installed in the mixing chamber 4, a spray head 6 is fixedly installed in the front end of the mixing chamber 4, built-in filters 7 are fixedly installed in the air inlet 2 and the water inlet 3, a plurality of transition flow channels 8 are connected in series in the nozzle body 1, a water inlet 9 communicated with the transition flow channels 8 is arranged on the side wall of the water inlet 3, and a water outlet 10 communicated with the transition flow channels 8 is arranged on the side wall of the mixing chamber 4;
the air-water flow dividing core 5 comprises a circular base 11, a convex column 12 is arranged at the front end of the axis of the circular base 11, a water inlet hole 12 at one side is formed in the side wall of the circular base 11, the water inlet hole 12 is communicated with a water outlet hole 10, a water spray hole 14 communicated with a water inlet hole 13 is formed in the axis of the convex column 12, the rear end of the water spray hole 14 is sealed, a plug 15 is arranged at the front end of the water spray hole 14, a plurality of side water spray holes 16 are uniformly formed in the side wall of the convex column 12, the side water spray holes 16 are communicated with the water spray hole 14, a plurality of vent holes 17 penetrating through the front end face and the rear end face of the circular base 11 are uniformly distributed around the water spray hole 14, an air cavity 18 communicated with the air inlet 2 is formed in the rear end face of the circular base 11, and the vent holes 17 are communicated with the air cavity 18.
As a further improvement of the above technical solution, the built-in filter 7 includes a filter body 19, a filter cavity 20 is provided in the filter body 19, a plurality of rectangular filter holes 21 are uniformly provided on the side wall of the filter body 19, a plurality of circular filter holes 22 are provided at the front end of the filter body 19, and an inner hole at the rear end of the filter body 19 is a hexagonal hole, which is convenient for installation.
As a further improvement of the above technical scheme, an annular boss 23 is arranged on the outer diameter of the tail end of the built-in filter 7, an arc-shaped groove 24 is formed in the outer surface of the annular boss 23, steps are arranged on the inner surfaces of the port positions of the air inlet 2 and the water inlet 3, the annular boss 23 is arranged at the step positions, the inner walls of the air inlet 2 and the water inlet 3 are provided with connecting inner threads, connecting outer threads matched with the connecting inner threads are arranged on the outer surface of the built-in filter 7, and a sealing ring 26 is arranged between the arc-shaped groove 24 and the inner walls of the steps.
As a further improvement of the above technical solution, the number of the side water spray holes 16 is the same as the number of the vent holes 17, and the side water spray holes are four and correspond to one another.
As a further improvement of the above technical solution, the plug 15 is a T-shaped plug, and a vertical body of the T-shaped plug is in interference fit with an inner wall of the blowhole 14.
As a further improvement of the above technical solution, the spray head 6 includes a spray head main body 26 and an integrated flow-dividing core 27, a spray cavity 28 is provided inside the rear end of the spray head main body 26, a spray hole communicated with the spray cavity 28 is provided inside the front end of the spray head main body 26, the spray hole includes a tapered hole 29 located at the front end of the spray cavity 28, a transition hole 30 is provided at the front end of the tapered hole 29, and a horn spray hole 31 is provided at the front end of the transition hole 30;
the integrated shunt core 2 comprises a connecting seat 32 and a core rod 33, the rear end of the core rod 33 is fixedly connected with the connecting seat 32, a plurality of communicating holes 34 are formed in the connecting seat 32, a conical section 35 is arranged in the middle of the core rod 33, a straight section 36 is arranged at the front part of the core rod 33, and a umbrella-shaped cover 37 is arranged at the front end of the core rod 33; the connecting base 32 is located in the spray cavity 28, and a spray annular seam 38 is formed between the core rod 33 and the spray hole.
As a further improvement of the above technical solution, the outer side of the rear end of the nozzle body 26 is provided with an external thread, and the inner wall of the front end of the mixing chamber 4 is provided with an internal thread connected with the external thread.
As a further improvement of the above technical solution, a clamping table 39 is arranged at a connection position of the spray cavity 28 and the tapered hole 29, a front end surface of the connecting seat 32 abuts against the clamping table 39, and the connecting seat 32 is in interference fit with an inner wall of the spray cavity 28.
As a further improvement of the above technical solution, the plurality of communication holes 34 are uniformly opened on the outer side surface of the connection seat 32.
As a further improvement of the above technical solution, the connecting seat 32 and the core rod 33 are an integrally formed structure.
Aqueous medium with certain pressure, get into by the water inlet, and filter through built-in filter and prevent inside large particle impurity gets into the nozzle body, through transition runner many times with water send into the hole for water spraying of air water reposition of redundant personnel core, then evenly spray to the hybrid chamber with a plurality of side hole for water spraying, form first atomizing, compressed air enters into the air cavity through built-in filter this moment, by air vent blowout and the high-speed perpendicular striking of first atomizing pressure water, intensive mixing once more, the fluid of mixture passes through collection dirt reposition of redundant personnel core reposition of redundant personnel reentrant shower nozzle inner chamber and carries out the cubic and mix, finally spout through the injection circumferential weld, make the spraying better even, the cooling effect is better.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A built-in filtering anti-blocking nozzle for secondary cooling of a square and round billet continuous casting machine is characterized by comprising a rectangular nozzle body, wherein an air inlet and a water inlet are formed in the rear end face of the nozzle body, a mixing cavity is formed in the front end face of the nozzle body and is communicated with the air inlet, an air-water flow dividing core is fixedly installed in the mixing cavity, a spray head is fixedly installed in the front end of the mixing cavity, built-in filters are fixedly installed in the air inlet and the water inlet, a plurality of transition flow channels are connected in series in the nozzle body, a water inlet hole communicated with the transition flow channels is formed in the side wall of the water inlet, and a water outlet hole communicated with the transition flow channels is formed in the side wall of the mixing cavity;
the air-water diversion core comprises a circular seat, a convex column is arranged at the front end of the axis of the circular seat, a water inlet hole is formed in one side of the side wall of the circular seat, the side water inlet hole is communicated with a water outlet hole, a water spray hole communicated with the side water inlet hole is formed in the axis of the convex column, the rear end of the water spray hole is sealed, a plug is arranged at the front end of the water spray hole, a plurality of side water spray holes are uniformly formed in the side wall of the convex column and communicated with the water spray hole, a plurality of vent holes penetrating through the front end face and the rear end face of the circular seat are uniformly distributed around the water spray holes, an air cavity communicated with an air inlet is arranged on the rear end face of the circular seat, and the vent holes are communicated with the air cavity;
the built-in filter comprises a filter body, a filter cavity is arranged in the filter body, a plurality of rectangular filter holes are uniformly formed in the side wall of the filter body, and a plurality of circular filter holes are formed in the front end of the filter body;
be equipped with annular boss on built-in filter's the terminal external diameter, be equipped with the arc recess on annular boss's the surface, the port department internal surface of air inlet and water inlet is equipped with the step, annular boss installs in step department, the inner wall of air inlet and water inlet all is equipped with connects the internal thread, be equipped with on built-in filter's the surface and be connected internal thread matched with and be connected the external screw thread, be equipped with the sealing washer between arc recess and the step inner wall.
2. The built-in filtering anti-blocking nozzle for secondary cooling of the square and round billet continuous casting machine according to claim 1, wherein the number of the side water spray holes is the same as the number of the vent holes, and the side water spray holes are four and correspond to the vent holes one by one.
3. The built-in filtering anti-blocking nozzle for secondary cooling of the square and round billet continuous casting machine according to claim 1, wherein the plug is a T-shaped plug, and a vertical body of the T-shaped plug is in interference fit with the inner wall of the water spraying hole.
4. The built-in filtering anti-blocking nozzle for secondary cooling of the square and round billet continuous casting machine according to claim 1, wherein the spray head comprises a spray head main body and an integrated flow distribution core, a spray cavity is arranged inside the rear end of the spray head main body, a spray hole communicated with the spray cavity is formed inside the front end of the spray head main body, the spray hole comprises a conical hole positioned at the front end of the spray cavity, a transition hole is arranged at the front end of the conical hole, and a horn spray hole is arranged at the front end of the transition hole;
the integrated shunt core comprises a connecting seat and a core rod, the rear end of the core rod is fixedly connected with the connecting seat, a plurality of communicating holes are formed in the connecting seat, a conical section is arranged in the middle of the core rod, a straight line section is arranged at the front part of the core rod, and an umbrella-shaped cover is arranged at the front end of the core rod; the connecting seat is positioned in the spray cavity, and a spray circular seam is formed between the core rod and the spray hole.
5. The built-in filtering anti-blocking nozzle for secondary cooling of the square and round billet continuous casting machine according to claim 4, wherein the outer side of the rear end of the nozzle body is provided with an external thread, and the inner wall of the front end of the mixing cavity is provided with an internal thread connected with the external thread.
6. The built-in filtering anti-blocking nozzle for secondary cooling of the square and round billet continuous casting machine according to claim 4, wherein a clamping table is arranged at the joint of the spray cavity and the tapered hole, the front end surface of the connecting seat is abutted against the clamping table, and the connecting seat is in interference fit with the inner wall of the spray cavity.
7. The built-in filtering anti-blocking nozzle for secondary cooling of the square and round billet continuous casting machine according to claim 4, wherein the plurality of communication holes are uniformly formed on the outer side surface of the connecting seat.
8. The built-in filtering anti-blocking nozzle for secondary cooling of the square and round billet continuous casting machine according to claim 4, wherein the connecting seat and the core rod are of an integrally molded structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111649542.8A CN114367642A (en) | 2021-12-30 | 2021-12-30 | Built-in filtering anti-blocking nozzle for secondary cooling of square and round billet continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111649542.8A CN114367642A (en) | 2021-12-30 | 2021-12-30 | Built-in filtering anti-blocking nozzle for secondary cooling of square and round billet continuous casting machine |
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| Publication Number | Publication Date |
|---|---|
| CN114367642A true CN114367642A (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111649542.8A Pending CN114367642A (en) | 2021-12-30 | 2021-12-30 | Built-in filtering anti-blocking nozzle for secondary cooling of square and round billet continuous casting machine |
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|---|---|
| CN (1) | CN114367642A (en) |
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