Anti-blocking submersed nozzle

Abstract

The utility model relates to the technical field of continuous casting, in particular to an anti-blocking submersed nozzle which comprises a nozzle wrist part, a connecting ring is fixedly connected to the outer surface of the nozzle wrist part, an inner heat conduction pipe is connected to the outer surface of the nozzle wrist part in an embedded mode, and a reinforcing pipe is connected to the outer surface of the inner heat conduction pipe in an embedded mode. A locking module is connected to the outer surface of the reinforcing pipe in a nested mode and comprises a first locking semi-ring and a second locking semi-ring, the first locking semi-ring is connected to the outer surface of the connecting ring in a nested mode, the second locking semi-ring is connected to the outer surface of the connecting ring in a nested mode, and two through holes are formed in the outer surface of the second locking semi-ring; in the utility model, the first locking half ring and the second locking half ring can be fixed by matching with the fastening bolt and the nut, so that the reinforcement pipe and the connecting ring are fixed, the reinforcement pipe and the inner heat conduction pipe are detachable, the reinforcement pipe or the inner heat conduction pipe is convenient to replace in the later period, the whole water gap is prevented from being replaced when the water gap is damaged, and the use cost of the water gap is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to continuous casting technical field, concretely is a kind of anti-blocking submerged entry nozzle. BACKGROUND

[0002] Submerged entry nozzle is the refractory sleeve installed in the bottom of tundish and inserted below the raw material surface of crystallizer in continuous casting equipment.The main function of submerged entry nozzle is to prevent secondary oxidation and splashing of molten steel of tundish injection, and the existing device has certain drawbacks, such as the anti-fracture and anti-blocking submerged entry nozzle recorded in announcement number CN219581664U, including inner hole and blocking layer, the bottom end of water cup part is provided with neck, and the bottom end of neck is provided with lower part, the inside of neck is provided with inner hole, and one side of neck is provided with blocking layer, and one side of blocking layer is provided with thickened shell, one side of lower part is provided with anti-blocking rod, the anti-blocking rod includes handle, connecting rod and inner wall block, and one side of handle is provided with connecting rod;

[0003] The above-mentioned device can prevent clogging by connecting rod, but the whole device is not convenient to disassemble, and the whole nozzle needs to be replaced when local damage occurs in later period, so that the use cost of the device is increased. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of anti-blocking submerged entry nozzle to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of anti-blocking submerged entry nozzle, including water cup part, the outer surface of water cup part is fixedly connected with connecting ring, the outer surface of water cup part is nested with inner heat pipe, the outer surface of inner heat pipe is nested with reinforcing pipe;

[0007] The outer surface of reinforcing pipe is nested with locking module, the locking module includes one locking half ring and two locking half rings, one locking half ring is nested with the outer surface of connecting ring, two locking half rings are nested with the outer surface of connecting ring, two locking half rings are provided with two through holes on the outer surface;

[0008] The coil is placed between the reinforcing pipe and the inner heat pipe, and the two ends of the coil pass through the through hole.

[0009] Further, the upper surface of the water cup part is provided with a bowl hole, the bowl hole is communicated with the inner heat pipe, and the lower surface of the water cup part is fixedly connected with the neck, and the inner heat pipe is connected with the neck and the water cup part.

[0010] Further in, the upper end surface of the inner heat conduction pipe and the inner surface of the connecting ring are in contact, and the outer surface of the connecting ring is integrally cast with a first annular protrusion.

[0011] Further in, the inner wall of the inner heat conduction pipe is fixedly connected with a calcium zirconate lining, and the outer surface of the inner heat conduction pipe is fixedly connected with a limiting ring close to the lower end position.

[0012] Further in, the inner surface of the reinforcing pipe is fixedly connected with a heat preservation layer, the upper surface of the reinforcing pipe is integrally cast with a second annular protrusion, the lower surface of the reinforcing pipe is provided with a connecting portion, and the terminal end of the connecting portion is welded with a conical blocking block.

[0013] Further in, the inner walls of the first locking half ring and the second locking half ring are both provided with limiting grooves, the outer surfaces of the first locking half ring and the second locking half ring are embedded with movable connecting fastening bolts, and the terminal ends of the fastening bolts are threadedly connected with nuts.

[0014] Further in, the reinforcing pipe is detachably connected through the locking module and the connecting ring.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The submerged nozzle is connected with the high-pressure steam pipeline outside through the coil pipe, so that the high-temperature and high-pressure steam heats the inner heat conduction pipe, the raw material is kept at a certain temperature, the phenomenon of the raw material temperature drop and the inclusion precipitation is effectively prevented, the calcium zirconate lining on the inner wall of the inner heat conduction pipe prevents alumina nodulation in the submerged nozzle through chemical reaction, the corrosion resistance and mechanical properties are improved, the nodulation tendency is significantly reduced, the continuous casting efficiency and the molten steel quality are improved, and the nozzle blockage is avoided from the material.

[0017] 2. The first locking half ring and the second locking half ring are fixed by cooperating with the fastening bolts and the nuts, the fixing between the reinforcing pipe and the connecting ring is completed, the reinforcing pipe and the inner heat conduction pipe are detachable, the reinforcing pipe or the inner heat conduction pipe can be replaced in the later period, the nozzle is not replaced as a whole when damaged, and the use cost of the nozzle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the overall structure schematic view of the utility model;

[0019] Fig. 2 It is the split structure schematic view of the locking module of the utility model;

[0020] Fig. 3 It is the coil pipe structure schematic view of the utility model;

[0021] Fig. 4 It is the cross section structure schematic view of the inner heat conduction pipe of the utility model;

[0022] Fig. 5 It is the reinforcing pipe section structure schematic diagram of the utility model.

[0023] In the figure: 1, water gap wrist; 101, bowl hole; 102, neck; 2, connecting ring; 201, No. Ring-shaped protrusion; 3, inner heat pipe; 301, calcium zirconate lining; 302, limit ring; 4, reinforcing pipe; 401, heat preservation layer; 402, No. Ring-shaped protrusion; 403, connecting part; 404, conical blocking block; 5, locking module; 501, No. Locking half ring; 502, No. Locking half ring; 503, through hole; 504, limit groove; 505, fastening bolt; 6, coil. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Please refer to Figs. 1-5 In the embodiments of the utility model, a kind of anti-blocking submerged nozzle, it includes water gap wrist 1, the outer surface of water gap wrist 1 is fixedly connected with connecting ring 2, the outer surface of water gap wrist 1 is nested with inner heat pipe 3, the outer surface of inner heat pipe 3 is nested with reinforcing pipe 4, the inner wall of inner heat pipe 3 is fixedly connected with calcium zirconate lining 301;

[0026] The outer surface of reinforcing pipe 4 is nested with locking module 5, and locking module 5 includes No. Locking half ring 501 and No. Locking half ring 502, No. Locking half ring 501 is nested with the outer surface of connecting ring 2, No. Locking half ring 502 is nested with the outer surface of connecting ring 2, two through holes 503 are formed in the outer surface of No. Locking half ring 502;

[0027] Reinforcing pipe 4 and inner heat pipe 3 are placed with coil 6, two ends of coil 6 pass through through hole 503, and reinforcing pipe 4 is detachably connected by locking module 5 and connecting ring 2.

[0028] Specifically, this submerged entry nozzle is connected to an external high-pressure steam pipe via coil 6, allowing high-temperature, high-pressure steam to heat the inner heat-conducting pipe 3, maintaining the raw material at a certain temperature. This effectively prevents the raw material temperature from dropping, which could lead to inclusion precipitation and nodule formation. The calcium zirconate lining 301 on the inner wall of the inner heat-conducting pipe 3 prevents alumina nodule formation through a chemical reaction within the submerged entry nozzle, improving corrosion resistance and mechanical properties, and significantly reducing the tendency for nodule formation. This, in turn, improves continuous casting efficiency and molten steel quality, and avoids nozzle blockage from a material perspective. The first locking half-ring 501 and the second locking half-ring 502 connect the connecting ring 2 and the reinforcing pipe 4, with the reinforcing pipe 4 increasing the overall strength of the device.

[0029] Example 1

[0030] like Figs. 1-5 As shown, a bowl hole 101 is provided on the upper surface of the sprue wrist 1. The bowl hole 101 is connected to the inner heat pipe 3. A neck 102 is fixedly connected to the lower surface of the sprue wrist 1. The inner heat pipe 3 is connected to the neck 102 and the sprue wrist 1. The upper end face of the inner heat pipe 3 is in contact with the inner surface of the connecting ring 2.

[0031] In this embodiment, the water inlet wrist 1 is welded together with the connecting ring 2 via the neck 102, and the connecting ring 2 provides auxiliary limiting for the upper end of the inner heat pipe 3.

[0032] like Figs. 1-4 As shown, a ring-shaped protrusion 201 is integrally cast on the outer surface of the connecting ring 2, and a limiting ring 302 is fixedly connected to the outer surface of the inner heat pipe 3 near the lower end.

[0033] In this embodiment, the reinforcing tube 4 has a protrusion inside for overlapping with the limiting ring 302. The lower end of the inner heat-conducting tube 3 is limited by the reinforcing tube 4. At this time, the connection between the connecting ring 2 and the reinforcing tube 4 is completed, and the assembly of the device is completed.

[0034] Example 2

[0035] Based on Embodiment 1, in order to remedy the problem that the connecting ring 2 and the reinforcing tube 4 were not fixed in Embodiment 1.

[0036] like Figs. 1-5 As shown, the inner surface of the reinforcing tube 4 is fixedly connected with an insulation layer 401, the upper surface of the reinforcing tube 4 is integrally cast with a second annular protrusion 402, the lower surface of the reinforcing tube 4 is provided with a connecting part 403, and a conical blocking block 404 is welded to the end of the connecting part 403. The inner walls of the first locking half ring 501 and the second locking half ring 502 are provided with limit grooves 504. The outer surfaces of the first locking half ring 501 and the second locking half ring 502 are embedded with fastening bolts 505, and the ends of the fastening bolts 505 are threaded with nuts.

[0037] In the embodiment, the heat preservation layer 401 is used for heat preservation of the coil pipe 6, the conical blocking block 404 guides the raw material, the second annular protrusion 402 and the first annular protrusion 201 are clamped into the limiting groove 504 during installation, the first locking half ring 501 and the second locking half ring 502 are fixed through cooperation of the fastening bolt 505 and the nut, the fixing between the reinforcing pipe 4 and the connecting ring 2 is completed, the reinforcing pipe 4 and the inner heat conducting pipe 3 are detachable, the reinforcing pipe 4 or the inner heat conducting pipe 3 can be replaced in the later period, the whole nozzle is not replaced when damaged, and the use cost of the nozzle is reduced.

[0038] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that, although the present application is described in the specification in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. An anti-blocking submerged nozzle, comprising a nozzle wrist (1), an outer surface of the nozzle wrist (1) being fixedly connected with a connecting ring (2), an outer surface of the nozzle wrist (1) being nestedly connected with an inner heat pipe (3), an outer surface of the inner heat pipe (3) being nestedly connected with a reinforcing pipe (4); characterized in that an outer surface of the reinforcing pipe (4) being nestedly connected with a locking module (5), the locking module (5) comprising; a first locking half ring (501) nestedly connected to an outer surface of the connecting ring (2); a second locking half ring (502) nestedly connected to an outer surface of the connecting ring (2), an outer surface of the second locking half ring (502) being provided with two through holes (503); a coil pipe (6) being arranged between the reinforcing pipe (4) and the inner heat pipe (3), both ends of the coil pipe (6) penetrating through the through holes (503).

2. The anti-blocking submerged entry nozzle according to claim 1, wherein an upper surface of the nozzle wrist (1) being provided with a bowl hole (101), the bowl hole (101) being communicated with the inner heat pipe (3), a lower surface of the nozzle wrist (1) being fixedly connected with a neck (102), the inner heat pipe (3) being connected with the nozzle wrist (1) in cooperation with the neck (102).

3. The anti-blocking submerged entry nozzle of claim 1, wherein, an upper end surface of the inner heat pipe (3) being in contact with an inner surface of the connecting ring (2), an outer surface of the connecting ring (2) being integrally casted with a first annular protrusion (201).

4. The anti-blocking submerged entry nozzle of claim 1, wherein, an inner wall of the inner heat pipe (3) being fixedly connected with a calcium zirconate lining (301), an outer surface of the inner heat pipe (3) being fixedly connected with a limiting ring (302) near a lower end position.

5. The anti-blocking submerged entry nozzle of claim 1 wherein, an inner surface of the reinforcing pipe (4) being fixedly connected with an insulation layer (401), an upper surface of the reinforcing pipe (4) being integrally casted with a second annular protrusion (402), a lower surface of the reinforcing pipe (4) being provided with a connecting portion (403), a distal end of the connecting portion (403) being welded with a conical blocking block (404).

6. The anti-blocking submerged entry nozzle of claim 1, wherein, limiting grooves (504) being provided in inner walls of the first locking half ring (501) and the second locking half ring (502), fastening bolts (505) being embeddedly movably connected to outer surfaces of the first locking half ring (501) and the second locking half ring (502), distal ends of the fastening bolts (505) being threadedly connected with nuts.

7. The anti-blocking submerged entry nozzle of claim 1, wherein, the reinforcing pipe (4) being detachably connected with the connecting ring (2) through the locking module (5).

Images