CN105081251B - Fan-shaped section nozzle - Google Patents

Abstract

The invention belongs to the technical field of sector sections of slab continuous casting machines, and in particular relates to a sector section nozzle. The segment nozzle disclosed by the present invention comprises an outer sleeve, a rotating support and a rotating body, the outer sleeve is sealed and connected with the rotating support, and there is a through hole communicating with the outer sleeve on the rotating support, and the rotating The body includes a connecting end and a special-shaped end, the rotating body is sleeved on the rotating support, the connecting end faces the rotating support, and there is a gap between the connecting end and the rotating support, and the special-shaped The end can drive the rotating body to rotate under the impact of the medium. Because the special-shaped end of the rotating body can drive the rotating body to rotate under the impact of high-pressure water, the high-speed rotating rotating body can crush the particulate matter in the nozzle, thereby preventing the nozzle from clogging.

Description

segment nozzle

technical field

The invention belongs to the technical field of sector sections of slab continuous casting machines, and in particular relates to a sector section nozzle.

Background technique

The fan section plays a key role in the whole continuous casting machine system, such as stretching, cooling, and forming of the slab. Each fan section nozzle in the flow channel of the continuous casting machine has multiple cooling zones, and each cooling zone has multiple nozzles. The spray system gradually cools the molten steel inside the slab from liquid to solid to form a slab. Therefore, the entire spray system plays a vital role in the quality of the slab.

However, due to design, water quality and other reasons, the nozzles in the sprinkler system are often clogged in a large area, and it takes a lot of people to clear the nozzles to ensure the quality of the slab, which seriously restricts the production of the slab continuous caster in the steelmaking plant Organization, and lead to invest a lot of manpower and material resources, increase production costs.

The main reasons for the nozzle blockage of the sprinkler system are: the water quality of the secondary cooling water causes the nozzle blockage; the nozzle structure is unreasonable.

Contents of the invention

The technical problem to be solved by the present invention is to provide a sector nozzle capable of preventing nozzle clogging.

The segment nozzle used by the present invention to solve the technical problem includes an outer casing, a rotating support and a rotating body. The outer casing is sealed and connected with the rotating support. hole, the rotating body includes a connecting end and a special-shaped end, the rotating body is sleeved on the rotating support, the connecting end faces the rotating support, and there is a gap between the connecting end and the rotating support gap, the special-shaped end can drive the rotating body to rotate under the impact of the medium.

Further, the end surface of the special-shaped end includes a plurality of blade bodies, and the blade body includes a vertical surface and an inclined surface, and both the vertical surface and the inclined surface extend from the center of the end surface of the special-shaped end to the circumference. The plane is perpendicular to the cross-section of the rotating body, and the inclined plane obliquely intersects with the vertical plane on the end face of the special-shaped end.

Further, the vertical surface and the inclined surface are arc-shaped surfaces.

Further, the number of the blade bodies is 4 to 8.

Further, the rotating support includes an outer sleeve connecting portion and a rotating body connecting portion, the inner diameter of the end of the outer sleeve connecting the rotating support matches the outer diameter of the outer sleeve connecting portion, in the There are a plurality of said through holes on the connecting part of the outer casing.

Further, the rotating body has a connection hole whose inner diameter matches the diameter of the connecting part of the rotating body, the outer diameter of the connecting part of the outer casing is larger than the outer diameter of the connecting part of the rotating body, and the connecting part of the rotating body The outer diameter is the same as the outer diameter of the outer sleeve connection part.

Further, there is a sealing ring on the outer periphery of the outer sleeve.

Further, the end of the connecting part of the rotating body is chamfered.

Further, the number of said through holes is 4 to 6.

Further, there are external threads on the outer sleeve.

The beneficial effect of the invention is that: because the special-shaped end of the rotating body can drive the rotating body to rotate under the impact of high-pressure water, the rotating body rotating at high speed can crush the particulate matter in the nozzle, thereby preventing the nozzle from being blocked.

Description of drawings

Fig. 1 is the assembly schematic diagram of an embodiment of the present invention;

Fig. 2 is the assembly schematic diagram of another embodiment of the present invention;

Fig. 3 is a cross-sectional view of an embodiment of the outer sleeve involved in the present invention;

Fig. 4 is a cross-sectional view of another embodiment of the outer sleeve involved in the present invention;

Fig. 5 is a right side view of an embodiment of the outer sleeve involved in the present invention;

Fig. 6 is a cross-sectional view of an embodiment of the rotary support involved in the present invention;

Fig. 7 is a right side view of an embodiment of the rotary support involved in the present invention;

Fig. 8 is a sectional view of an embodiment of the rotary body involved in the present invention;

Fig. 9 is a right side view of an embodiment of the rotary body involved in the present invention;

Fig. 10 is a three-dimensional structure diagram of an embodiment of the rotating body involved in the present invention;

Fig. 11 is a three-dimensional structure diagram of an embodiment of the rotating body involved in the present invention;

Fig. 12 is the structural representation of the embodiment that the present invention cooperates with nozzle;

Parts, parts and numbers in the figure: outer casing 1, external thread 11, rotating support 2, through hole 21, outer casing connecting part 22, rotating body connecting part 23, rotating body 3, connecting end 31, special-shaped end 32, Blade body 33 , vertical surface 331 , inclined surface 332 , gap 300 , sealing ring 4 , large pipe 5 , small pipe 6 , orienting sleeve 7 , cylindrical part 71 , bottom 72 , spray slot 8 .

detailed description

The present invention will be further described below in conjunction with accompanying drawing. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention.

As shown in Figures 1 to 11, the present invention includes an outer sleeve 1, a rotating support 2 and a rotating body 3, the outer sleeve 1 is sealed with the rotating support 2, and the rotating support 2 has a The through hole 21 through which the tube 1 communicates, the rotating body 3 includes a connection end 31 and a special-shaped end 32, the rotating body 3 is sleeved on the rotating support 2, and the connecting end 31 faces the rotating support 2 , and there is a gap 300 between the connecting end 31 and the rotating support 2, and the special-shaped end 32 can drive the rotating body 3 to rotate under the impact of a medium, such as high-pressure water and/or high-pressure gas. When in use, as shown in Figure 12, the outer casing 1 is connected to the high-pressure water-air pipe. The high-pressure water-air pipe is a casing structure of 5 large pipes and 6 small pipes, wherein the small pipe 6 passes high-pressure gas, and the small pipe 6 and the large pipe 5 are connected to each other. Through high-pressure water, the outer casing 1 end of the assembled nozzle shown in Figure 1 or Figure 2 is sealed with the small tube 6, if the nozzle structure shown in Figure 2 is adopted, and the outer thread 11 is set on the outer casing 1, then The small pipe 6 is connected to the nozzle disclosed by the present invention through a screw connection method, and then the orientation sleeve 7 is connected to the large pipe 5. The orientation sleeve 7 is barrel-shaped, and the orientation sleeve 7 includes a cylindrical portion 71 and a semi-spherical bottom 72 , the cylindrical portion 71 of the orientation sleeve 7 is connected to the large pipe 5, and the orientation sleeve 7 and the large pipe 5 are not sealed, but a plurality of spray slots 8 are left, which can be adjusted by controlling the position and number of the spray slots 8 The direction of the jet of high-pressure water vapor. When working, first, high-pressure gas enters the small tube 6, and high-pressure water enters the large tube 5; then, high-pressure gas enters the outer casing 1, the through hole 21 on the rotating support 2 and the inner cavity of the directional sleeve 7, and the high-pressure water directly enters the directional sleeve 7 inner cavity; high-pressure water and high-pressure gas are mixed in the inner cavity of the directional sleeve 7 to form a high-pressure water-air mixed flow, and gyrate in the directional sleeve 7 to generate a gyrating force. Under the action of this gyrating force, the special-shaped end will Rotate, and then make the whole rotating body 3 rotate. When the rotating body rotates, it can grind the impurities mixed in the high-pressure water to prevent the nozzle from being blocked. The gap 300 provides a rolling gap for rolling impurity particles. The width of the gap 300 can be set according to the needs. If the particles in the water are large, the gap 300 should be set wider. If the particles in the water are small, the gap 300 should be set. be smaller. Certainly, the gap 300 can also be set as a structure with an irregular width, so as to be suitable for the rolling of particles of different sizes.

Specifically, in order to make the rotating body 3 rotate easily, as shown in Figure 10 and Figure 11, the end surface of the special-shaped end 32 includes a plurality of blade bodies 33, and the blade body 33 includes a vertical surface 331 and an inclined surface 332, the Both the vertical surface 331 and the inclined surface 332 extend from the center of the end surface of the special-shaped end 32 to the circumference, the vertical surface 331 is perpendicular to the cross section of the rotating body 3 , the inclined surface 332 and the vertical surface 331 are at The end surfaces of the special-shaped end 32 intersect obliquely. The special-shaped end 32 with the blade body 33 is similar to the structure of a propeller, and it is easy to rotate under the action of the high-pressure water-air mixed flow. Of course, the vertical surface 331 may also obliquely intersect with the cross section of the rotating body 3 .

Specifically, in order to further facilitate the rotation of the rotating body 3 , as shown in FIG. 11 , the vertical surface 331 and the inclined surface 332 are arc-shaped surfaces. The arc surface 332 can reduce the resistance to the high-pressure water-air mixed flow, so that the rotating body 3 can rotate easily.

Specifically, in order to make the rotating body 3 simple in structure and easy to rotate, the number of the blade bodies 33 is 4 to 8. Preferably, the number of the blade bodies 33 is six.

Specifically, in order to facilitate the connection between the rotating support 2 and the outer sleeve 1 and the rotating body 3, and to facilitate the rotation of the rotating body 3, as shown in Figures 1, 2 and 6, the rotating bearing 2 includes an outer sleeve connecting portion 22 and The rotating body connecting part 23, the inner diameter of the end of the outer casing 1 connected to the rotating support 2 matches the outer diameter of the outer casing connecting part 22, and there are a plurality of said outer casing connecting parts 22. Through hole 21. Preferably, the rotating body 3 has a connecting hole 34 whose inner diameter matches the diameter of the rotating body connecting portion 23, and the outer diameter of the outer sleeve connecting portion 22 is larger than the outer diameter of the rotating body connecting portion 23, so The outer diameter of the rotating body 3 is the same as the outer diameter of the outer tube connecting portion 22 . The rotating body connecting portion 23 of the rotating support 2 provides a rotating shaft for the rotating body 3 to facilitate the rotation of the rotating body 3 .

Specifically, in order to ensure the sealability of the connection between the rotating support 2 and the outer casing 1 , a sealing ring 4 is provided on the outer periphery of the outer casing 1 . The sealing ring 4 can ensure the sealability of the connection between the rotating support 2 and the outer casing 1, and the number of sealing rings 4 can be set as required. As shown in FIG. 1 , two sealing rings can be provided; as shown in FIG. 2 , if the connection between the rotating support 2 and the outer casing 1 is threaded, a sealing ring 4 can be provided.

Specifically, in order to reduce wear on the rotating support 2 when the rotating body 3 rotates, the end of the rotating body connecting portion 23 is chamfered. The edge of the rotating body connecting part 23 after the chamfering process does not contact the rotating body 3, and the rotating body 3 will not wear the edge of the rotating body connecting part 23 when it rotates. This treatment method can improve the use of the entire nozzle life.

Specifically, in order to ensure the circulation of the rotating support 2, the number of said through holes 21 is 4 to 6. Preferably, the number of through holes 21 is six.

Claims (10)

1. sector nozzle, characterized in that: comprising Outer casing (1), rotating support (2) and rotating body (3), The outer sleeve (1) is sealingly connected with the rotating support (2), and the rotating support (2) has a through hole (21) communicating with the outer sleeve (1), The rotating body (3) includes a connecting end (31) and a special-shaped end (32), the rotating body (3) is sleeved on the rotating support (2), and the connecting end (31) faces the The rotating support (2), and there is a gap (300) between the connecting end (31) and the rotating support (2), and the special-shaped end (32) can drive the rotating body (3) under the impact of the medium ) to rotate. 2. The sector nozzle according to claim 1, characterized in that: The end face of the special-shaped end (32) includes a plurality of blade bodies (33), and the blade body (33) includes a vertical surface (331) and an inclined surface (332), and the vertical surface (331) and the inclined surface ( 332) all extend from the center of the end face of the special-shaped end (32) to the circumference, The vertical plane (331) is perpendicular to the cross section of the rotating body (3), and the inclined plane (332) obliquely intersects with the vertical plane (331) on the end face of the special-shaped end (32). 3. The sector nozzle according to claim 2, characterized in that: Both the vertical surface (331) and the inclined surface (332) are arc-shaped surfaces. 4. The sector nozzle according to claim 3, characterized in that: The number of the blade bodies (33) is 4 to 8. 5. The sector nozzle according to claim 4, characterized in that: The rotating support (2) includes an outer casing connection part (22) and a rotating body connecting part (23), and the outer casing (1) connects the inner diameter of one end of the rotating support (2) to the outer casing The outer diameters of the connection part (22) are matched, and there are a plurality of through holes (21) on the outer tube connection part (22). 6. The sector nozzle according to claim 5, characterized in that: The rotating body (3) has a connecting hole (34) whose inner diameter matches the diameter of the rotating body connecting portion (23), and the outer diameter of the outer casing connecting portion (22) is smaller than that of the rotating body connecting portion (23). ) has a large outer diameter, and the outer diameter of the rotating body (3) is the same as the outer diameter of the outer sleeve connecting portion (22). 7. The sector nozzle according to claim 6, characterized in that: A sealing ring (4) is arranged on the outer periphery of the outer casing (1). 8. The sector nozzle according to claim 7, characterized in that: The end of the rotating body connecting portion (23) is chamfered. 9. The sector nozzle according to claim 8, characterized in that: The number of said through holes (21) is 4 to 6. 10. The sector nozzle according to claim 9, characterized in that: There are external threads (11) on the outer sleeve (1).