CN212495382U

CN212495382U - Liftable tundish nozzle centralizer

Info

Publication number: CN212495382U
Application number: CN202021377456.7U
Authority: CN
Inventors: 刘庆强; 邢智刚
Original assignee: Jianlong Beiman Special Steel Co Ltd
Current assignee: Jianlong Beiman Special Steel Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-02-09
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to a liftable tundish nozzle centralizer belongs to the cast steel equipment field. For solving the current not enough of whole mouth of a river centering precision difference, the utility model provides a liftable formula tundish mouth of a river centralizer, including the mouth of a river under the line to the middle station, to well calibration rod and locking device, the external diameter to well calibration rod is less than the internal diameter of treating the centering mouth of a river, to being fixed with the tray on the well calibration rod, the centering is calibrated the pole and is crossed mouth of a river under the line to middle station sliding connection, and the mouth of a river is crossed to every centering on the middle station under the line and is markd the other locking device that has all arranged of pole mounted position. The utility model discloses through the line lower gate centering platform with reciprocate the centering demarcation pole mutually support, realize the mouth of a river to the unified mouth of a river extension length in with, overcome the problem that artifical naked eye centering accuracy is low in the time of easy operation.

Description

Liftable tundish nozzle centralizer

Technical Field

The utility model belongs to the cast steel equipment field especially relates to a liftable tundish nozzle centralizer.

Background

In the process of continuous casting steel, tundish molten steel is poured into a crystallizer through a water gap, the tundish water gap is mainly divided into a split type water gap and an integral type water gap, wherein the split type water gap can separately adjust the relative position of each water gap in the crystallizer on line to enable the water gaps to be centered, but because the split type water gap has the condition of poor sealing at the matching part of a tundish upper water gap and an immersion water gap, the water gaps are easy to cause secondary oxidation of the molten steel and influence the pouring quality. The integral water gap can avoid the problems, when the integral water gap is installed, the water gap is inserted from a tundish water gap pocket brick, the water gap and a tundish are fixed after centering, pouring is carried out, manual centering is mostly adopted at present, workers carry out centering operation by virtue of self experience, and the deviation of the centering position and the insertion depth of the integral water gap is large. When the centering deviation of the whole submerged nozzle is large, the heat flow density deviation in the crystallizer is large, and a blank shell on one side is washed, so that the growth thickness of the blank shell is not uniform, and the surface defect of a casting blank is caused. When the whole immersion nozzle is inserted with improper depth, the casting blank quality is greatly influenced, namely, when the immersion nozzle is inserted shallowly, the liquid level of the crystallizer fluctuates, and when the water gap of the crystallizer is inserted deeply, the casting blank is not easy to melt and the slag inclusion floats. Therefore, the centering and the same extension length of the integral submerged nozzle of the tundish are necessary conditions for producing zero-defect casting blanks.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned current poor not enough of whole mouth of a river centering precision, the utility model provides a liftable formula tundish mouth of a river centralizer.

The technical scheme of the utility model:

the utility model provides a liftable formula tundish mouth of a river centralizer, includes the mouth of a river centering platform under the line, to well calibration rod and locking device, the external diameter to well calibration rod is less than the internal diameter of treating the centering mouth of a river, be fixed with the tray on to well calibration rod, to well calibration rod and mouth of a river centering platform sliding connection under the line, the mouth of a river all has arranged a locking device by every centering calibration rod mounted position on the centering platform under the line.

Preferably, a cylinder matched with the centering calibration rod is arranged in the centering table of the water outlet of the pipeline, the centering calibration rod can move up and down in the cylinder, and a locking device is arranged beside each cylinder on the centering table of the water outlet of the pipeline.

Preferably, the head of the marker stem in the pair is conical.

Preferably, the locking device comprises a first arc-shaped piece, a second arc-shaped piece, a bolt and a first arc-shaped piece fixing seat, the first arc-shaped piece is fixed on the online water gap centering platform through the first arc-shaped piece fixing seat, one end of the second arc-shaped piece is hinged to one end of the first arc-shaped piece, and the other end of the second arc-shaped piece is connected with the other end of the first arc-shaped piece through the bolt.

The utility model has the advantages that:

1. the utility model discloses a mouth of a river centering platform under the line, package mouth of a river centralizer in middle of to well centering rod and locking device has constituted a liftable formula tundish mouth of a river centralizer, settle package mouth of a river centralizer in middle of the liftable formula when using under the position is built to the middle package, fix the position to well centering rod according to pouring basket position and casting flow interval, the centering that corresponds each mouth of a river is markd the pole and is moved up to the below at the mouth of a river, centering is markd the pole and is advanced inside the water inlet, the mouth of a river is held in the tray of fixing on the well centering rod, adjust the length that shifts up of well centering rod in each pair, make the mouth of a river stretch out length unanimously, screw up the locking bolt after realizing the centering, to well centering rod locking, prevent the mouth of a river from moving down and controlling the slope, open locking device after. The utility model discloses through the line lower gate centering platform with reciprocate the centering mark pole mutually support, realize that the mouth of a river is unified to the well mouth of a river extension length, overcome the problem that the accuracy of artifical naked eye centering is low in the time of easy operation.

2. The head of the middle calibration rod of the utility model is conical, so that the water gap can be conveniently inserted.

3. The utility model discloses a locking device adopts the structure that first arc piece, second arc piece, bolt and first arc piece fixing base constitute, and second arc piece one end is articulated with the one end of first arc piece, and first arc piece is through mouth of a river centering bench under first arc piece fixing base line, and the mouth of a river centering bench is down fixed on line to the three promptly, when accomplishing the centering and need locking, with second arc piece and first arc piece lock and through bolt locking, accomplishes the locking operation promptly. Compared with the existing tightening bolt and the locking pin, the arc-shaped piece has larger contact area with the centering and calibrating rod, the stress area is enlarged, the mutual abrasion between the locking device and the centering and calibrating rod can be effectively reduced, the friction force is increased, and the locking effect is improved.

Drawings

Fig. 1 is a schematic view of an assembly structure of a liftable tundish nozzle centralizer according to a first embodiment to a third embodiment;

FIG. 2 is a schematic structural diagram of a locking device according to a second embodiment;

FIG. 3 is a schematic view of the assembly of the first arcuate tab, the second arcuate tab and the bolt according to the second embodiment;

in the figure, 1, a water outlet centering platform is arranged on a line; 2. centering a middle calibration rod; 3. a locking device; 4. a tray; 5. a cylinder; 6. a first arcuate segment; 7. a second arc piece; 8. a bolt; 9. a first arc-shaped sheet fixing seat; 10. a tundish; 11. a nozzle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: the present embodiment is explained with reference to fig. 1, and the present embodiment proposes the following technical solutions:

the utility model provides a liftable tundish nozzle centralizer, includes that the mouth of a river is calibrated pole 2 and locking device 3 to centering platform 1, centering under the line, and the external diameter to centering pole 2 slightly is less than the internal diameter of treating the centering mouth of a river, and the head of centering pole 2 is conical, is fixed with tray 4 on centering pole 2, the mouth of a river is calibrated pole 2 matched with drum 5 with the centering under the line to arranging in centering platform 1, and centering pole 2 can reciprocate in drum 5, a locking device 3 has all been arranged to the other position of every drum 5 on centering platform 1 to the mouth of a river under the line, locking device 3 is locking bolt.

When the nozzle brick cup is used, the nozzle brick cup is placed at the bottom of the tundish 10, the nozzle 11 is inserted into the nozzle brick cup, and the bowl opening at the upper part of the nozzle 11 is coated with refractory mortar to be matched with the nozzle brick cup. The liftable tundish nozzle centralizer is arranged right below a repairing position of a tundish 10, the position of a centering calibration rod 2 is fixed according to the position of the tundish and a casting distance, the centering calibration rod 2 corresponding to each nozzle 11 is moved upwards to the position below the nozzle 11, a conical head of the centering calibration rod 2 enters the nozzle 11, a tray 4 fixed on the centering calibration rod 2 supports the nozzle 11, the upwards moving length of each centering calibration rod 2 is adjusted, the extending length of the nozzle 11 is consistent, a locking bolt is screwed after centering, the centering calibration rod 2 is locked, and the nozzle 11 is prevented from moving downwards and inclining leftwards and rightwards. And (3) coating the periphery of the nozzle pocket brick with coating, and fixing the relative position of the nozzle pocket brick and the nozzle 11 after natural drying, namely finishing the centering installation of the nozzle 11 on the tundish 10. The locking bolts are respectively unscrewed, and the lifting tundish nozzle centralizer can be detached.

The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and proposes the following technical solutions:

a lifting tundish nozzle centering device comprises a linear sewage nozzle centering platform 1, a centering calibration rod 2 and a locking device 3, the outer diameter of the centering calibration rod 2 is slightly smaller than the inner diameter of a water gap to be centered, the head of the centering calibration rod 2 is conical, a tray 4 is fixed on the centering rod 2, a cylinder 5 matched with the centering rod 2 is arranged in the centering table 1 of the linear water outlet, the centering and positioning rod 2 can move up and down in the cylinder 5, a locking device 3 is arranged beside each cylinder 5 on the centering platform 1 of the line sewer, the locking device 3 comprises a first arc-shaped sheet 6, a second arc-shaped sheet 7, a bolt 8 and a first arc-shaped sheet fixing seat 9, the first arc-shaped sheet 6 is fixed on the centering platform 1 of the line sewer through the first arc-shaped sheet fixing seat 9, one end of the second arc-shaped sheet 7 is hinged to one end of the first arc-shaped sheet 6, and the other end of the second arc-shaped sheet 7 is connected with the other end of the first arc-shaped sheet 6 through a bolt 8.

When the nozzle brick cup is used, the nozzle brick cup is placed at the bottom of the tundish 10, the nozzle 11 is inserted into the nozzle brick cup, and the bowl opening at the upper part of the nozzle 11 is coated with refractory mortar to be matched with the nozzle brick cup. The liftable tundish nozzle centralizer is arranged right below a repairing position of a tundish 10, the position of a centering rod 2 is fixed according to the position of the tundish and a casting distance, the centering rod 2 corresponding to each nozzle 11 is moved upwards to the position below the nozzle 11, a conical head of the centering rod 2 enters the nozzle 11, a tray 4 fixed on the centering rod 2 supports the nozzle 11, the upwards moving length of each centering rod 2 is adjusted, so that the extending length of the nozzle 11 is consistent, after centering is achieved, a second arc-shaped sheet 7 and a first arc-shaped sheet 6 are buckled and locked through a bolt 8, namely the centering rod 2 is locked through a locking device 3, and the nozzle 11 is prevented from moving downwards and inclining left and right. And (3) coating the periphery of the nozzle pocket brick with coating, and fixing the relative position of the nozzle pocket brick and the nozzle 11 after natural drying, namely finishing the centering installation of the nozzle 11 on the tundish 10. The locking bolts are respectively unscrewed, and the lifting tundish nozzle centralizer can be detached.

The third concrete implementation mode: the present embodiment is explained with reference to fig. 1, and the present embodiment proposes the following technical solutions:

the utility model provides a liftable tundish nozzle centralizer, includes that the mouth of a river is calibrated pole 2 and locking device 3 to centering platform 1, centering under the line, slightly is less than the internal diameter of waiting to center the mouth of a river to the external diameter of centering pole 2, and the head of centering pole 2 is conical, is fixed with tray 4 on centering pole 2, the mouth of a river is calibrated pole 2 matched with drum 5 with the centering under the line to arranging in centering platform 1 under the line, and centering pole 2 can reciprocate in drum 5, a locking device 3 has all been arranged to the other position of every drum 5 on centering platform 1 to the mouth of a river under the line, locking device 3 is the fitting pin.

When the nozzle brick cup is used, the nozzle brick cup is placed at the bottom of the tundish 10, the nozzle 11 is inserted into the nozzle brick cup, and the bowl opening at the upper part of the nozzle 11 is coated with refractory mortar to be matched with the nozzle brick cup. The liftable tundish nozzle centralizer is arranged right below a repairing position of a tundish 10, the position of a centering calibration rod 2 is fixed according to the position of the tundish and a casting distance, the centering calibration rod 2 corresponding to each nozzle 11 is moved upwards to the position below the nozzle 11, a conical head of the centering calibration rod 2 enters the nozzle 11, a tray 4 fixed on the centering calibration rod 2 supports the nozzle 11, the upwards moving length of each centering calibration rod 2 is adjusted, the extending length of the nozzle 11 is consistent, a locking pin is screwed after centering, the centering calibration rod 2 is locked, and the nozzle 11 is prevented from moving downwards and inclining left and right. And (3) coating the periphery of the nozzle pocket brick with coating, and fixing the relative position of the nozzle pocket brick and the nozzle 11 after natural drying, namely finishing the centering installation of the nozzle 11 on the tundish 10. The locking bolts are respectively unscrewed, and the lifting tundish nozzle centralizer can be detached.

Claims

1. The utility model provides a liftable formula tundish nozzle centralizer, its characterized in that, including the lower mouth of a river of line centering platform (1), centering calibration rod (2) and locking device (3), the external diameter to centering calibration rod (2) is less than the internal diameter of treating centering nozzle (11), to being fixed with tray (4) on centering calibration rod (2), to centering calibration rod (2) and the lower mouth of a river of line centering platform (1) sliding connection, the mouth of a river is to every other locking device (3) of having arranged of centering calibration rod (2) mounted position on centering platform (1) under the line.

2. The lifting tundish nozzle centering device according to claim 1, wherein a cylinder (5) matched with the centering calibrating rod (2) is arranged in the linear downcomer centering table (1), the centering calibrating rod (2) can move up and down in the cylinder (5), and a locking device (3) is arranged beside each cylinder (5) on the linear downcomer centering table (1).

3. The lifting tundish nozzle centralizer of claim 1, wherein the head of the centering rod (2) in the pair is conical.

4. The lifting tundish nozzle centering device according to claim 1, wherein the locking device (3) comprises a first arc-shaped piece (6), a second arc-shaped piece (7), a bolt (8) and a first arc-shaped piece fixing seat (9), the first arc-shaped piece (6) is fixed on the online nozzle centering table (1) through the first arc-shaped piece fixing seat (9), one end of the second arc-shaped piece (7) is hinged to one end of the first arc-shaped piece (6), and the other end of the second arc-shaped piece (7) is connected with the other end of the first arc-shaped piece (6) through the bolt (8).