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CN-121972644-A - Double-atomizing runner composite medium switching nozzle for continuous casting machine

CN121972644ACN 121972644 ACN121972644 ACN 121972644ACN-121972644-A

Abstract

The application provides a double-atomizing-channel composite medium switching nozzle for a continuous casting machine, which comprises a nozzle body, wherein a first cavity and a second cavity are formed in the nozzle body, an inlet end of the first cavity is used for communicating an external water pipe, an outlet end of the first cavity is communicated with the second cavity through a connecting channel, an inlet end of the second cavity is used for communicating an external air pipe, a double-channel component is arranged at the outlet end of the second cavity and comprises a first channel and a second channel, the second channel is distributed at the peripheral side of the first channel and is used for passing through a water-air mixture, the first channel is used for passing through water, a switching component is arranged in the second cavity and comprises a first state and a second state, when the air pipe is blocked, the switching component is arranged in the first state so as to enable the connecting channel to be communicated with the first channel, and when the air pipe is conducted, the switching component is arranged in the second state so as to enable air and water to be mixed after passing through the switching component and enter the second channel. The nozzle provided by the application has the advantages of fast dual-mode switching, consistent atomization angle and adaptation to all steel types.

Inventors

  • ZHANG WEIDONG
  • ZHANG MANZHU

Assignees

  • 北京中冶冶金设备制造有限公司
  • 河北京安喷雾设备制造有限公司

Dates

Publication Date
20260505
Application Date
20260204

Claims (10)

  1. 1. The utility model provides a two atomizing runner composite medium switching nozzle for conticaster which characterized in that includes: The air-conditioning device comprises a nozzle body (1), wherein a first cavity (2) and a second cavity (3) are formed in the nozzle body (1), the inlet end of the first cavity (2) is used for being communicated with an external water pipe and is provided with a water part filtering component, the outlet end of the first cavity is communicated with the second cavity (3) through a connecting channel (4), and the inlet end of the second cavity (3) is used for being communicated with an external air pipe and is provided with an air part filtering component; The double-channel component is arranged at the outlet end of the second cavity (3) and comprises a nozzle, a first channel (5) and a second channel (6), wherein the second channel (6) is distributed at the peripheral side of the first channel (5) and is used for passing through a water-gas mixture; The switching component is arranged in the second cavity (3) and comprises a first state and a second state, when the air pipe is blocked, the switching component is arranged in the first state so as to enable the connecting channel (4) to be communicated with the first channel (5), and when the air pipe is conducted, the switching component is arranged in the second state so as to enable gas and water to be mixed after passing through the switching component and enter the second channel (6).
  2. 2. The dual atomizing runner composite media switching nozzle for a continuous casting machine as set forth in claim 1, wherein said water portion filter assembly includes: The water outer grille (7) is detachably arranged at the inlet end of the first cavity (2) and is of a cylindrical structure, so that water is filtered when passing through the outer wall of the first cavity; The water internal grating (8) is detachably arranged in the first cavity (2), the interior of the water internal grating (8) is hollow and is communicated with the interior of the water external grating (7), and a plurality of filtering holes are formed in the side wall of the water internal grating (8); The composite grille (9) is detachably arranged in the first cavity (2) and sleeved outside the water grille (8) so as to separate the water grille (8) from the connecting channel (4).
  3. 3. The dual atomizing runner composite media switching nozzle for a continuous casting machine as set forth in claim 1, wherein said air filter assembly includes: the gas inner grille (10) is detachably arranged at the inlet end of the second cavity (3) and is of a cylindrical structure, so that gas is filtered when passing through the outer wall of the gas inner grille (10); The outer gas grille (11), the outer gas grille (11) is of a cylindrical structure and is coaxially sleeved outside the inner gas grille (10), and is detachably connected with the inlet end of the second cavity (3).
  4. 4. The dual atomizing runner composite media switching nozzle for a continuous casting machine as set forth in claim 1 wherein said dual channel assembly comprises: The nozzle head body (12), the nozzle head body (12) is detachably connected with the outlet end of the second cavity (3), and comprises a coaxial inner shell (13) and an outer shell (14), the inner part of the inner shell (13) is hollow to form the first channel (5), a plurality of second channels (6) are formed between the inner shell (13) and the outer shell (14), and the second channels (6) are uniformly distributed along the circumferential direction of the nozzle head body (12); The nozzle head cap (15), the nozzle head cap (15) with the shell (14) of the nozzle head body (12) can be dismantled and be connected, the one end that the nozzle head cap (15) kept away from second cavity (3) with the cooperation of nozzle head body (12) forms the spout.
  5. 5. The double-atomizing runner composite medium switching nozzle for the continuous casting machine according to claim 4, wherein a nozzle core (16) is installed in the nozzle head body (12), a pair of swirl grooves (17) are formed in the side wall of the nozzle core (16), and a gathering groove (18) communicated with the swirl grooves (17) is formed in one side away from the second cavity (3).
  6. 6. The double-atomizing runner composite medium switching nozzle for the continuous casting machine according to claim 4, wherein the outlet end of the nozzle head cap (15) is bent towards one side close to the axis of the nozzle head body (12) to form an inward-folded part (19), one side of the inward-folded part (19) close to the second channel (6) forms an arc-shaped oscillating curved surface (20), one side far away from the second channel (6) is formed with a guiding conical surface (21), the diameter of the guiding conical surface (21) close to one end of the second cavity (3) is smaller than that of the other end, an inward-recessed turning part (38) is arranged on the outer side wall of the outlet end of the nozzle head body (12), and the turning part (38) is used for oversteering a water-gas mixture between the tail end of the oscillating curved surface (20) and the starting end of the guiding conical surface (21).
  7. 7. The dual atomizing runner composite media switching nozzle for a continuous casting machine as claimed in claim 1 wherein said switching assembly comprises: The nozzle head plug (22) is arranged at the inlet end of the nozzle head body (12) and is communicated with the second channel (6) and the second cavity (3); The air flow diverter (23) is of a cylindrical structure with a hollow middle part, one end of the air flow diverter (23) is communicated with the nozzle head plug (22), the other end of the air flow diverter is communicated with the air part filtering component, a first water inlet (24) is arranged on the side wall of the air flow diverter (23), the first water inlet (24) is in butt joint with the connecting channel (4), a pair of first water outlet (25) and an air outlet (26) are further arranged on the side wall of the air flow diverter (23), the first water outlet (25) and the air outlet (26) are arranged on one side, far from the nozzle head plug (22), of the first water inlet (24), the air outlet (26) is arranged on one side, far from the first water outlet (25), of the first water outlet (25) and the air outlet (26), a concave air guide groove (27) and a water guide groove (28) are arranged on the outer side wall of the air flow diverter (23), one end of the air guide groove (27) is communicated with the air outlet (26), one end of the water guide groove (28) is communicated with the first water outlet (25) and the other end of the air guide groove (28) is close to the connecting channel (6); The diverter comprises a diverter pin (29), wherein the diverter pin (29) is movably arranged in the diverter (23) and hollow in the interior, the moving direction is along the axial direction of the diverter (23), a second water inlet (30) and a second water outlet (31) are arranged on the side wall of the diverter pin (29), the second water inlet (30) is arranged on one side, close to the nozzle head plug (22), of the second water outlet (31), when the air pipe is conducted, the diverter pin (29) is used for sealing the nozzle head plug (22), the first water inlet (24) is communicated with the second water inlet (30), and when the air pipe is blocked, the diverter pin (29) is used for opening the nozzle head plug so that the first water inlet (24) is communicated with the nozzle head plug (22).
  8. 8. The double-atomizing runner composite medium switching nozzle for the continuous casting machine according to claim 7, wherein an annular limiting protrusion (32) is arranged on the inner side wall of the diverter (23), a limiting portion (33) is arranged at one end, close to the gas filtering component, of the diverter pin (29), an elastic reset piece (34) is sleeved on the outer side of the diverter pin (29), one end of the elastic reset piece (34) is in contact with the limiting portion (33), and the other end of the elastic reset piece is in contact with the limiting protrusion (32).
  9. 9. The double-atomizing runner composite medium switching nozzle for the continuous casting machine according to claim 8, wherein an annular first concave part is arranged on the outer periphery side of the limiting part (33), a first sealing ring (35) is embedded in the first concave part, an annular second concave part is formed on the inner side wall of the flow divider (23), and the second concave part is arranged on one side, away from the elastic limiting part, of the limiting protrusion (32) and is embedded with a second sealing ring (36).
  10. 10. The double-atomizing runner composite medium switching nozzle for a continuous casting machine according to claim 5, wherein a guiding inclined surface (37) is formed on an outer side wall of an end of the inner housing (13) of the nozzle head body (12) remote from the second cavity (3), and the guiding inclined surface (37) is used for guiding a gas-liquid mixture to the oscillating curved surface (20).

Description

Double-atomizing runner composite medium switching nozzle for continuous casting machine Technical Field The invention belongs to the technical field of casting blank spray cooling equipment, and particularly relates to a double-atomizing runner composite medium switching nozzle for a continuous casting machine. Background In the continuous casting production process, the secondary cooling process needs to be matched with differentiated cooling intensity and atomization form according to the characteristics of the cast steel (such as plain carbon steel or crack sensitive alloy steel), and a full water nozzle with strong cooling capacity or an aerosol nozzle with soft atomization is generally adopted to respectively correspond to the strong cooling process and the weak cooling process. Under the current trend of intensive and efficient steel production, a single continuous casting machine needs to have the production capacity of covering all steel types, so that the secondary cooling nozzle of the single continuous casting machine is required to be flexibly adapted in a wide cooling range, and the traditional single-medium fixed nozzle cannot meet the requirement. In the prior art, although there are nozzle designs which are individually tried to be compatible with two cooling modes, a common single atomizing flow channel is adopted in many cases, and when pure water and air water modes are switched, the spray atomizing angle is changed obviously due to the inherent difference of medium characteristics and flow channel structures. The inconsistent angle can directly influence the uniformity and process stability of the cooling of the surface of the casting blank, and can not maintain constant atomization coverage while guaranteeing the rapid switching of the cooling mode, thereby limiting the reliable application of the device in the continuous casting production of all steel. Disclosure of Invention In view of the foregoing drawbacks and deficiencies of the prior art, a dual atomizing runner composite media switching nozzle for a continuous casting machine is provided, comprising: the air filter comprises a nozzle body, wherein a first cavity and a second cavity are formed in the nozzle body, the inlet end of the first cavity is used for being communicated with an external water pipe and provided with a water part filtering component, and the outlet end of the first cavity is communicated with the second cavity through a connecting channel; the double-channel component is arranged at the outlet end of the second cavity and comprises a nozzle, a first channel and a second channel, wherein the second channel is distributed at the peripheral side of the first channel and is used for passing through a water-gas mixture; The switching component is arranged in the second cavity and comprises a first state and a second state, when the air pipe is blocked, the switching component is arranged in the first state so as to enable the connecting channel to be communicated with the first channel, and when the air pipe is conducted, the switching component is arranged in the second state so as to enable air and water to be mixed after passing through the switching component and enter the second channel. According to the technical scheme provided by the invention, the water part filtering assembly comprises: the water outer grille is detachably arranged at the inlet end of the first cavity and is of a cylindrical structure, so that water is filtered when passing through the outer wall of the first cavity; The water inner grille is detachably arranged in the first cavity, hollow in the first cavity and communicated with the interior of the water outer grille, and a plurality of filtering holes are formed in the side wall of the water inner grille; the composite grille is detachably arranged in the first cavity and sleeved outside the water internal grille, so as to space the water internal grille and the connecting channel. According to the technical scheme provided by the invention, the gas filtering component comprises: the gas inner grille is detachably arranged at the inlet end of the second cavity and is of a cylindrical structure, so that gas is filtered when passing through the outer wall of the second cavity; The outer gas grille is of a cylindrical structure, coaxially sleeved outside the inner gas grille and detachably connected with the inlet end of the second cavity. According to the technical scheme provided by the invention, the double-channel assembly comprises: The nozzle head body is detachably connected with the outlet end of the second cavity and comprises a coaxial inner shell and an outer shell, the inner shell is hollow to form the first channel, a plurality of second channels are formed between the inner shell and the outer shell, and the second channels are uniformly distributed along the circumferential direction of the nozzle head body; the nozzle head cap is detachably connected with the shell of