CN201644782U

CN201644782U - Nozzle fixing device

Info

Publication number: CN201644782U
Application number: CN2010201305593U
Authority: CN
Inventors: 田陆; 李娟�; 李向前
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-15
Filing date: 2010-03-15
Publication date: 2010-11-24
Anticipated expiration: 2020-03-15

Abstract

The utility model provides a nozzle fixing device, which comprises a fixing support and at least two clamping blocks. The clamping blocks are rotatably hinged onto the fixing support; and each clamping block respectively comprises a clamping portion positioned on the inner surface of the clamping block and matched with the outer surface of an elongated nozzle, a spacing portion positioned on the inner surface of the clamping block and spaced with the outer surface of the elongated nozzle for providing permitted pivoting capacity, and a supporting portion supporting the elongated nozzle and leading the clamping block to pivotally rotate from a first position to a second position under pressure of the elongated nozzle. At the first position, the clamping portion is spaced with the outer surface of the elongated nozzle; and at the second position, the clamping portion clamps on the outer surface of the elongated nozzle. The clamping blocks realize clamping of the elongated nozzle under supporting of the fixing support, thereby being capable of preventing steel leakage due to inclination of the elongated nozzle, and leading loss and reduction of vibration signals generated when molten steel and steel slag flow by the elongated nozzle to be smaller, and increasing accuracy of roughing slag detection.

Description

A kind of mouth of a river fixture

Technical field

The utility model relates to the continuous casting of molten steel field, in particular to a kind of mouth of a river fixture that is used for molten steel casting system long nozzle.

Background technology

In the smelting process of molten steel, particularly to pour into a mould the later stage, slag flow into tundish from big bag through long nozzle.The existence of slag has greatly influenced steel quality, when serious even continuous casting of molten steel can't be carried out.In order to improve steel quality, improve the molten steel recovery rate, must accurately detect the following quantity of slag in the big bag.Current technology about slag detection down is a lot, and wherein slag detection method cost is low, easy for installation down in vibration, and service life is longer, and application promise in clinical practice is arranged.

Fig. 1 shows the structural representation that slag detects under the vibration of the prior art.As shown in Figure 1, the vibration detection ratio juris is by a vibration detection device 8 is installed on mechanical arm 3, flow into the process of tundish 2 from big bag 1 at molten steel, long nozzle 4 can produce stronger vibration, this vibration is given vibration detection device 8 by mechanical arm 3 conduction, because the different caused vibrations with the proportion of slag of molten steel are inevitable variant, therefore, arrive the situation of bale slag-blanking by the vibrational energy indirect detection that detects long nozzle 4.

Fig. 2 shows the local connection diagram of mechanical arm and long nozzle among Fig. 1.In the process of big bag cast, long nozzle 4 need be enclosed within on the slide plate of big bag 1 bottom, realize the protection cast of steel stream.Long nozzle 4 is supported by the backing ring 9 of motion arm 3 front ends, under hydraulic cylinder control, makes long nozzle 4 withstand slide plate 10, aims at the slide plate mouth of a river and begins to water steel.In the casting process, in order to make the level stability of tundish 2, need the opening degree of real-time adjusting slider 10, especially in the cast later stage, the slide plate action more frequently.Because the outer hoop 5 of long nozzle directly is enclosed within the backing ring 9, do not fix to clamp between the inner surface of the outer surface of long nozzle 4 and backing ring 9, thereby contact is not firm, makes to have the slit between long nozzle 4 and the slide plate.Like this, when big bag slide plate 10 moved, long nozzle 4 can rock in backing ring 9, and long nozzle 4 tilts easily.These influences not only can cause long nozzle 4 and slide plate 10 junction bleed-outs, also can make molten steel or slag that long nozzle 4 is impacted the unusual interference that the vibration signal that produces is subjected to the slide plate action, useful signal is incurred loss and decay, greatly reduce down the accuracy that slag detects.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of mouth of a river fixture that is used for molten steel casting system long nozzle that can fix to clamp long nozzle.

In order to solve the problems of the technologies described above, the utility model provides a kind of mouth of a river fixture that is used for molten steel casting system long nozzle, it comprises fixed support and at least two clamps, clamp is hinged on the fixed support rotationally, and each clamp comprises respectively: the clamping part that is positioned on the inner surface of clamp and is complementary with the outer surface of long nozzle; Be positioned on the inner surface of clamp and spaced apart so that a spacer portion that allows pivot amount to be provided with the outer surface of long nozzle; And, support long nozzle, and under the pressure of long nozzle, make clamp be pivoted to the support portion of the second place from primary importance; Wherein, in primary importance, the outer surface of clamping part and long nozzle is spaced apart, and in the second place, clamping part is clamped on the outer surface of long nozzle.

Further, clamping part is the inner cylinder face that is positioned at the upper inner part of clamp, and spacer portion is for being the internal conical surface that the expansion taper is extended from inner cylinder face to the lower end, and the support portion is the upper surface of clamp.

Further, clamping part is the inner cylinder face that is positioned at the inner surface end portion of clamp, and spacer portion is for being the internal conical surface that the expansion taper is extended from inner cylinder face to the upper end.

Further, the part of the internal conical surface of clamp supports long nozzle, forms the support portion.

Further, fixed support is a square frame shape.

Further, fixed support is circular, and clamp is hinged on the fixed support evenly and at intervals.

Further, clamp is two, is arranged at the relative both sides of long nozzle.

Further, the position that joins corresponding to the inner cylinder face on the clamp and internal conical surface of the pin joint that is hinged with fixed support on the clamp or corresponding to the position at the internal conical surface place on the clamp.

Adopt the mouth of a river fixture that is used for molten steel casting system long nozzle of above structure to have following beneficial effect:

1. the mouth of a river of the present utility model fixture comprises fixed support and clamp, when supporting long nozzle, the pressure of long nozzle makes clamp forward the clip position of clamping long nozzle to, thereby by clamp long nozzle is fixedly clamped, can prevents to tilt to cause long nozzle and slide plate junction bleed-out because of long nozzle.

2. clamping part of the present utility model closely contacts with the long nozzle outer wall, makes detected molten steel of sensor or slag stronger to the impact shock signal that long nozzle produces, and has reduced the loss and the decay of vibration signal, has improved the vibration accuracy of slag detection down.

3. the mouth of a river fixture that provides of the utility model can clamp long nozzle and be fixing, eliminate the influence that causes sign mutation because of the slide plate frequent movement, makes the detected vibration signal of sensor steady, improves the vibration accuracy that detects of slag down.

4. clamp of the present utility model is arranged to ramp structure, and the inboard is certain taper, is overlapping/when getting long nozzle, the clamp that is distributed in the long nozzle both sides can freely be adjusted the opening and closing degree, under fixed support supports, can realize the automatic clamping of long nozzle and loosens.

Description of drawings

Accompanying drawing described herein is used to provide the further understanding to utility model, constitutes the application's a part, and the illustrative examples of utility model and explanation thereof are used to explain utility model, do not constitute the improper qualification to utility model.In the accompanying drawings:

Fig. 1 shows the structural representation that slag detects under the vibration of the prior art;

Fig. 2 shows the local connection diagram of mechanical arm and long nozzle among Fig. 1;

Fig. 3 shows the mouth of a river fixture structure schematic diagram (being in clamped condition) according to the utility model first embodiment;

Fig. 4 show the mouth of a river shown in Figure 3 fixture in cut open schematic diagram;

Fig. 5 shows the mouth of a river fixture structure schematic diagram (before the clamped condition) according to the utility model first embodiment;

Fig. 6 shows according to cuing open schematic diagram (being in clamped condition) in the mouth of a river fixture of the utility model second embodiment, and wherein fixed support is not shown.

The specific embodiment

Below with reference to the accompanying drawings and in conjunction with the embodiments, describe utility model in detail.

Fig. 3 shows the mouth of a river fixture structure schematic diagram (being in clamped condition) according to the utility model first embodiment.As shown in Figure 3, mouth of a river fixture is positioned at the below of the outer hoop 5 of long nozzle, and it is made up of clamp 6 and fixed support 7, and clamp 6 has two, is arranged at the both sides of long nozzle 4 respectively, and long nozzle 4 is fixedly clamped in clamping face.Fixed support 7 is a square frame shape metallic support, be centered around clamp 6 around, clamp 6 is hinged on the fixed support 7 versatilely by anchor 72.Have certain clearance between clamp 6 and the fixed support 7, clamp 6 can freely be adjusted the opening and closing degree of clamping.Fixed support 7 relative both sides also are provided with bolt 71, clamping and fixing device can be fixed on the front end of mechanical arm by bolt 71.

Fig. 4 show the mouth of a river shown in Figure 3 fixture in cut open figure, as shown in Figure 4, the inner surface of clamp 6 is arranged to ramp structure, comprises clamping part 61, spacer portion 62 and support portion 63.Upper inner partly the inner cylinder face of clamping part 61 for being positioned at clamp, the diameter of clamping part 61 is corresponding with long nozzle outer surface diameter size, when clamping and fixing device is in clamped condition, the clamping part 61 of the clamp 6 of long nozzle both sides surrounds a not exclusively cylindrical clamping zone of sealing, and long nozzle 4 is fixedly clamped therein.The lower surface of the inner surface of clamp 6 is a spacer portion 62, and spacer portion 62 is the expansion taper from clamping part 61 to the lower end extends, and forms the part of internal conical surface, and the diameter of spacer portion 62 is greater than the diameter of long nozzle outer surface.Support portion 63 is the upper surface of clamp, and long nozzle 4 is played a supportive role.The inner surface of clamp 6 is arranged to the opening and closing degree that such ramp structure can freely be adjusted clamp 6, makes things convenient for the cover of long nozzle/get.

Fig. 5 shows the mouth of a river fixture structure schematic diagram (before the clamped condition) according to the utility model first embodiment.Because clamp 6 is hinged on the described fixed support 7 rotationally, the position that the pin joint that is hinged with fixed support 7 on the clamp 6 joins corresponding to the inner cylinder face on the clamp 6 and internal conical surface or corresponding to the position at the internal conical surface place on the clamp 6.Can be by selecting suitable articulated position, make clamping and fixing device be in free state following time, the long nozzle insertion end of two clamps 6 is opened respectively laterally, simultaneously, because the diameter of spacer portion 62 is convenient to the installation of long nozzle like this greater than the diameter of long nozzle outer surface.As shown in Figure 5, when long nozzle 4 is inserted in the device, the outer hoop 5 of long nozzle will be pressed on the upper surface of clamp 6, be on the support portion 63, because mouth of a river self gravitation inwardly clamps clamp 6 automatically, when the upper surface of clamp 6 is horizontal, in the middle of the clamping part 61 of the clamping face of clamp 6 just is clamped in long nozzle 4, realize the clamping of long nozzle 4 and fixing.

Spacer portion 62 also can adopt the form of the non-conical surface.For example, in a kind of unshowned embodiment, spacer portion be under the clamp position shown in the figure diameter greater than the inner cylinder face of clamping part diameter.Because the diameter of the relative clamping part of this larger-diameter inner cylinder face has the yielding amount, thereby certain clamp pivot amount can be provided, and makes that clamping part can leave the long nozzle outer surface when the clamping and fixing device cover is set on the long nozzle, so that operation.

Fig. 6 shows according to cuing open figure (being in clamped condition) in the mouth of a river fixture of the utility model second embodiment.The mouth of a river of present embodiment fixture was different with first embodiment except that the structure of the inner surface of its clamp 6, all the other structures were all identical with first embodiment.As shown in Figure 6, the upper part of the inner surface of the clamp 6 of the mouth of a river fixture among second embodiment to be the taper seat that the expansion taper extends to the upper end be spacer portion 62, the inner cylinder face of the end portion of the inner surface of clamp 6 is a clamping part 61, when mouth of a river fixture is in clamped condition, the diameter of spacer portion 62 is greater than the diameter of long nozzle, and the diameter of clamping part 61 is basic and the equal diameters of long nozzle 4.When long nozzle 4 overlaps in the water inlet fixtures, spacer portion 62 contacts with the bottom of the outer hoop 5 of long nozzle, under the gravity effect of long nozzle 4 self, the outer hoop 5 of long nozzle pushes spacer portion 62 laterally, make the inside axle in lower end of clamp 6 change, clamping part 61 clamps long nozzle, realizes under clamp 6 and fixed support 7 actings in conjunction the clamping of long nozzle 4 and fixing.Need to prove that in the present embodiment, spacer portion 62 also plays a supportive role to long nozzle 4 simultaneously, promptly spacer portion 62 and support portion are with a part.

Mouth of a river fixture structure in the foregoing description is simple, and the opening and closing degree that it can freely adjust clamp helps the cover of long nozzle/get; And avoided in the prior art long nozzle because of contact the not firm inclination that produces with backing ring, produced the gap during slide plate action and cause the problem of bleed-out; Also reduced the slide plate action in addition to the unusual interference that long nozzle produces impact shock, improved accuracy following slag vibration detection signal.

The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. a mouth of a river fixture is characterized in that, comprising:

Fixed support (7) and

At least two clamps (6) are hinged on the described fixed support (7) rotationally, and each described clamp (6) comprises respectively:

Clamping part (61) is positioned on the inner surface of described clamp (6) and is complementary with the outer surface of long nozzle (4),

Spacer portion (62) is positioned on the inner surface of described clamp (6) and spaced apart providing one to allow pivot amount with the outer surface of described long nozzle (4),

And

Described long nozzle (4) is supported in support portion (63), and makes described clamp (6) be pivoted to the second place from primary importance under the pressure of described long nozzle (4),

Wherein, in described primary importance, described clamping part (61) is spaced apart with the outer surface of described long nozzle (4), and in the described second place, described clamping part (61) is clamped on the outer surface of described long nozzle (4).

2. the mouth of a river according to claim 1 fixture, it is characterized in that, upper inner partly the inner cylinder face of described clamping part (61) for being positioned at described clamp (6), described spacer portion (62) is for being the internal conical surface that the expansion taper is extended from described inner cylinder face to the lower end, and described support portion (63) are the upper surface of described clamp (6).

3. the mouth of a river according to claim 1 fixture, it is characterized in that, described clamping part (61) is the inner cylinder face that is positioned at the inner surface end portion of described clamp (6), and described spacer portion (62) is for being the internal conical surface that the expansion taper is extended from described inner cylinder face to the upper end.

4. the mouth of a river according to claim 3 fixture is characterized in that, the part of the internal conical surface of described clamp (6) supports described long nozzle, forms described support portion (63).

5. the mouth of a river according to claim 1 fixture is characterized in that, described fixed support (7) is a square frame shape.

6. the mouth of a river according to claim 1 fixture is characterized in that, described fixed support (7) is circular, and described clamp (6) is hinged on the described fixed support (7) evenly and at intervals.

7. the mouth of a river according to claim 1 fixture is characterized in that, described clamp (6) is two, is arranged at the relative both sides of described long nozzle (4).

8. according to claim 2 or 3 described mouth of a river fixtures, it is characterized in that described clamp (6) is gone up position that the pin joint that is hinged with described fixed support (7) joins corresponding to the described inner cylinder face on the described clamp (6) and described internal conical surface or corresponding to the position at the described internal conical surface place on the described clamp (6).