CN102861886A

CN102861886A - Quick water gap changing mechanism of tundish

Info

Publication number: CN102861886A
Application number: CN 201210332012
Authority: CN
Inventors: 高桂航
Original assignee: Taizhou City Wang Xin Refractory Co Ltd
Current assignee: Taizhou City Wang Xin Refractory Co Ltd
Priority date: 2012-09-11
Filing date: 2012-09-11
Publication date: 2013-01-09

Abstract

The invention relates to a quick water gap changing mechanism of a tundish, which is used for changing the water gap of the tundish. The quick water gap changing mechanism comprises an upper guide plate (2), a left guide plate (6) and a right guide plate (5), wherein an upper water gap (3) is installed on the upper guide plate; and a lower water gap (4) is supported by the left guide plate and the right guide plate together. The quick water gap changing mechanism is characterized in that a middle guide plate (1) is arranged between the upper water gap and the lower water gap; a middle water gap (12) is arranged at the middle of the middle guide plate; two middle water gap through holes (13) are arranged in the middle water gap; and the axis of any one of the middle water gap through holes can be coincident with the central line of the through holes of the upper water gap and the lower water gap by moving the middle guide plate. Compared with the prior art, the quick water gap changing mechanism has the advantages that when the upper water gap is severely damaged, the middle water gap can be changed to another water gap so as to compensate the damage of the upper water gap, so that the tundish can work continuously, and the constant casting time is prolonged.

Description

A kind of bakie water mouth fast exchanging mechanism

Technical field

The present invention relates to more converting mechanism of a kind of continuous casting of iron and steel middle water containing opening, be used for changing the mouth of a river of tundish.

Background technology

The quick-changing mechanism of middle water containing opening generally comprises upper guide plate, left guide plate, right guide plate, tundish and filling pipe end are installed on the upper guide plate, filling pipe end is in the centre position, bottom of tundish, left guide plate and right guide plate are held the lower mouth of a river jointly, filling pipe end and the lower mouth of a river have a through hole, this through hole forms molten steel channel, the internal diameter of through hole determines the flow of molten steel, in the etch of high-temperature molten steel with wash away lower, the through hole at the mouth of a river can enlarge and the flow of molten steel is changed up and down, because filling pipe end is non-exchange, normally unclamp a left side, the mouth of a river guarantees that the flow of molten steel is in the scope of regulation under the right guide plate Quick-changing, but when filling pipe end is excessive by hole enlargement, the impaired speed at the lower mouth of a river is accelerated to shorten its service life, tundish was stopped use when the filling pipe end hole enlargement reached the limit, because be about at present 30 hours the service life of filling pipe end, and be far longer than 30 hours the actual life of the cylinder-packing of tundish, therefore caused the significant wastage of material, be subject to simultaneously the filling pipe end restriction in service life, the direct casting time can only be decided by filling pipe end service life.

Summary of the invention

For the deficiencies in the prior art, the invention provides a kind of quick-changing mechanism of middle water containing opening, increase the mouth of a river between filling pipe end and the lower mouth of a river, compensate the damage of filling pipe end, prolong service time and the direct casting time of tundish.

Structure of the present invention comprises upper guide plate 2, left guide plate 6, right guide plate 5, filling pipe end 3 is installed on the upper guide plate, left guide plate 6 and right guide plate 5 are held the lower mouth of a river 4 jointly, it is characterized in that between filling pipe end 3 and the lower mouth of a river 4, a centering guide 1 being set, be provided with the middle mouth of a river 12 in the centering guide 1, the middle mouth of a river 12 is provided with two middle mouth of a river through holes 13, and mobile centering guide 1 can make the axis of mouth of a river through hole 13 in any overlap with the through-bore axis at filling pipe end 3 and the lower mouth of a river 4.

Compared with prior art, the quick-changing mechanism of this middle water containing opening can switch to another with the damage of compensation filling pipe end with middle mouth of a river through hole 13 when the filling pipe end well damage, tundish can be worked on, and the direct casting time is lengthened.

Description of drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 be the A-A of Fig. 1 to cutaway view, do not draw left and right guide plate and the lower mouth of a river and alignment pin among the figure.

Fig. 3 be the B-B of Fig. 1 to cutaway view, do not draw alignment pin among Fig. 3.

The specific embodiment

Existing accompanying drawings embodiments of the invention, the quick-changing mechanism of middle water containing opening of the present invention, comprise upper guide plate 2, left guide plate 6, right guide plate 5, filling pipe end 3 is installed on the upper guide plate, left guide plate 6 and right guide plate 5 are held the lower mouth of a river 4 jointly, it is characterized in that between filling pipe end 3 and the lower mouth of a river 4, a centering guide 1 being set, be provided with the middle mouth of a river 12 in the centering guide 1, the middle mouth of a river 12 is provided with two middle mouth of a river through hole 13 its internal diameters and equates with the internal diameter of the through hole at filling pipe end 3 and the lower mouth of a river 4, and mobile centering guide 1 can make the axis of mouth of a river through hole 13 in any overlap with the through-bore axis at filling pipe end 3 and the lower mouth of a river 4.The through hole at middle mouth of a river through hole 13 and filling pipe end 3, the lower mouth of a river 4 forms molten steel channel.

The locating piece 21 that is symmetrically arranged with two strips on the bottom surface of described upper guide plate 2 forms one " П " shape groove, described centering guide 1 has the shape that matches with described " П " shape groove, and centering guide 1 is inserted in this " П " shape groove and can be along the length direction move left and right of locating piece 21.

Being shaped as four jiaos and being circular rectangle of the described middle mouth of a river 12, the middle mouth of a river 12 is embedded in the middle part of centering guide 1, its thickness equates with the thickness at the middle mouth of a river 12, middle mouth of a river through hole 13 on the middle mouth of a river 12 is two, if the long enough in service life of tundish, middle mouth of a river through hole 13 on the middle mouth of a river 12 can be more than two, and the described middle mouth of a river 12 usefulness zirconia materials are made.

For making centering guide 1 location convenient (referring to Fig. 2), end at centering guide 1 is provided with locating detent 14, locating detent 14 be from centering guide 1 the side on outwardly rectangular teeth, be provided with locating slot 22 at locating piece 21, locating detent 14 stretch in the locating slot 22 and can be in locating slot 22 move left and right, when locating detent 14 moves on to locating slot 22 right side, the axis of the middle mouth of a river through hole 13 on the left side overlaps with the through-bore axis at filling pipe end 3 and the lower mouth of a river 4 on the middle mouth of a river 12, when locating detent 14 moved on to locating slot 22 left side, the axis of the middle mouth of a river through hole 13 on the right overlapped with the through-bore axis at filling pipe end 3 and the lower mouth of a river 4 on the middle mouth of a river 12.

For making centering guide 1 location reliable, in locating piece 21 sides one outside fix hole 24 is set, be provided with two interior locating holes 15 in a side of centering guide 1, between the interior locating hole (15) apart between length and the middle mouth of a river through hole 13 apart from equal in length, when one axis in the central mouth of a river through hole 13 overlaps with the through-bore axis at filling pipe end 3 and the lower mouth of a river 4, outside fix hole 24 is coaxial with an interior locating hole 15, be inserted with latch 23 in outside fix hole 24 and the interior locating hole 15, make centering guide 1 fixing with upper guide plate 2.In the middle of one axis in the mouth of a river through hole when overlapping with the through-bore axis at filling pipe end and the lower mouth of a river, outside fix hole 24 is joined brill with interior locating hole 15 employings and is processed, and can make outside fix hole 24 coaxial with an interior locating hole 15.

Pull handle 11 outside the other end of described centering guide 1 is provided with, be used for being connected with the drive unit that centering guide 1 is moved.

Its operation principle is, mouth of a river through hole is in running order on the middle mouth of a river forms molten steel channel with filling pipe end and the lower mouth of a river, mouth of a river through hole is stand-by state in another, when the filling pipe end damaged condition is not serious when using, controls molten steel flow by changing the lower mouth of a river; When the filling pipe end damaged condition seriously can not be used, mouth of a river through hole on the middle mouth of a river another is switched to duty, at this moment be equivalent to change a new filling pipe end, make one times of direct casting time lengthening, reduce tundish and changed number of times, improve casting efficient, taken full advantage of simultaneously the working life of tundish, avoided the waste of tundish material.

This bakie water mouth fast exchanging mechanism is implemented convenient, and only needing increases described centering guide of the present invention and an oil cylinder as the centering guide drive unit at existing bakie water mouth fast exchanging mechanism; Existing lower outlet replacing device (device that namely is connected with left and right sides guide plate) can remain unchanged; At upper guide plate tundish being installed can use.

This bakie water mouth fast exchanging mechanism easy to operate, lower outlet replacing operation is identical with original operation, and middle outlet replacing is operating as and extracts first latch 23, starts the centering guide drive unit centering guide is moved, the centering guide rear insertion latch that puts in place is closed the centering guide drive unit and is got final product.

Claims

1. bakie water mouth fast exchanging mechanism, comprise upper guide plate (2), left guide plate (6), right guide plate (5), filling pipe end (3) is installed on the upper guide plate, left guide plate (6) and right guide plate (5) are held the lower mouth of a river (4) jointly, it is characterized in that between filling pipe end (3) and the lower mouth of a river (4), a centering guide (1) being set, be provided with the middle mouth of a river (12) in the centering guide (1), the middle mouth of a river (12) is provided with two middle mouth of a river through holes (13), and mobile centering guide (1) can make the axis of mouth of a river through hole (13) in any overlap with the through-bore axis at filling pipe end 3 and the lower mouth of a river 4.

2. bakie water mouth fast exchanging mechanism according to claim 1, it is characterized in that, the locating piece (21) that is symmetrically arranged with two strips on the bottom surface of described upper guide plate (2) forms one " П " shape groove, described centering guide (1) has the shape that matches with described " П " shape groove, and centering guide (1) is inserted in this " П " shape groove and can be along the length direction move left and right of locating piece (21); Being shaped as four jiaos and being circular rectangle of the described middle mouth of a river (12), the middle mouth of a river (12) are embedded in the middle part of centering guide (1), and its thickness equates with the thickness of centering guide (1).

3. bakie water mouth fast exchanging mechanism according to claim 2, it is characterized in that, end at centering guide (1) is provided with locating detent (14), locating detent (14) is outwardly rectangular teeth from the side of centering guide (1), be provided with locating slot (22) at locating piece (21), locating detent (14) stretch in the locating slot (22) and can be in locating slot (22) move left and right, when locating detent (14) moves on to locating slot (22) right side, the axis of the middle mouth of a river through hole (13) on the upper left side, the middle mouth of a river (12) overlaps with the through-bore axis at filling pipe end (3) and the lower mouth of a river (4), when locating detent (14) moved on to locating slot (22) left side, the axis of the middle mouth of a river through hole (13) on the middle mouth of a river (12) upper the right overlapped with the through-bore axis at filling pipe end (3) and the lower mouth of a river (4).

4. bakie water mouth fast exchanging mechanism according to claim 2, it is characterized in that, in locating piece (21) side one outside fix hole (24) is set, be provided with two interior locating holes (15) in a side of centering guide (1), between the interior locating hole (15) apart between length and the middle mouth of a river through hole (13) apart from equal in length, when one axis in the central mouth of a river through hole (13) overlaps with the through-bore axis at filling pipe end (3) and the lower mouth of a river (4), outside fix hole (24) is coaxial with an interior locating hole (15), is inserted with latch (23) in outside fix hole (24) and the interior locating hole (15).