CN104646653A

CN104646653A - Stopper rod flow control structure enabling stopper rod to be safely matched with nozzle

Info

Publication number: CN104646653A
Application number: CN201510022955.1A
Authority: CN
Inventors: 周益城; 周成; 周成平
Original assignee: CHANGXING ZHENGFA THERMOELECTRICITY REFRACTORY MATERIAL Co Ltd
Current assignee: CHANGXING ZHENGFA THERMOELECTRICITY REFRACTORY MATERIAL Co Ltd
Priority date: 2015-01-16
Filing date: 2015-01-16
Publication date: 2015-05-27
Anticipated expiration: 2035-01-16
Also published as: CN104646653B

Abstract

The invention aims at solving the problems of the existing stopper rod nozzle flow control device that when a stopper rod is deviated from the axis of the nozzle, the stopper rod and the nozzle are damaged because the stopper rod cannot be effectively prevented from eccentrically contacting the nozzle. The stopper rod flow control structure comprises a nozzle on the bottom wall of a tundish and a stopper rod matched with the nozzle, wherein a plurality of fixed blocks are also arranged on the bottom wall of the tundish, the fixed blocks are arranged on the periphery of the nozzle and are circumferentially distributed along the axis of the nozzle, the upper end surface of each fixed block is arranged above the upper end surface of the nozzle, guide blocks matched with the fixed blocks are fixedly arranged nearby the position above a choke plug of the stopper rod, and a reinforcing rib is arranged between the upper end surface of each guide block and the outer circumferential surface of the stopper rod; a columnar guide groove is formed in one surface, adjacent to the axis of the nozzle, of each fixed block, the axis of the guide groove is parallel to that of the nozzle, and the guide blocks are arranged in the guide groove in a matching manner. The stopper rod flow control structure has the beneficial effects that the problem that the stopper rod is broken or damages the nozzle due to the eccentric contact between the stopper rod and the nozzle can be prevented.

Description

The stopper rod flow control structure of a kind of stopper and mouth of a river secure fit

Technical field

The present invention relates to middle water containing opening flow control technique field, particularly relate to the stopper rod flow control structure of a kind of stopper and mouth of a river secure fit.

Background technology

Stopper-mouth of a river flow control structure is a kind of conventional flow control structure during basket pouring controls, and this structure comprises the nozzle brick with the mouth of a river and the stopper be engaged on the mouth of a river that are arranged on tundish bottom surface.Controlled the aperture at the mouth of a river by the position controlling the relative mouth of a river of stopper, and then control poring rate.Under normal circumstances, the axis at the mouth of a river and the axis of stopper should on same straight lines, at this moment the arbitrary cross section of stopper and the cross section at the mouth of a river concentric, when stopper comes downwards to the inwall at the contact mouth of a river, just can close the mouth of a river completely.But due to the alignment error of stopper handle structure or the deviation of in use stopper position appearance, all may cause the axis at the original mouth of a river of the axis runout of stopper, at this moment just there is bias in the cross section of stopper and the cross section at the mouth of a river, and such side-play amount is often smaller, be difficult to be visually detectable; When such stopper comes downwards to contact mouth of a river inwall, the mouth of a river cannot be closed completely, if continue descending stopper behind the contact mouth of a river, can make again stopper increases a bending load, easily cause fractureing of stopper, the pressure that the contact site at stopper and the mouth of a river is subject to simultaneously also becomes large, and the contact fatigue on stopper or surface, the mouth of a river can be caused to lose efficacy.

Such as, in existing open file, have that publication number is CN 201895085 U, publication date is the Chinese patent literature of 2011.07.13, disclose a kind of two-seater brick nozzle brick utilizing stopper rod flow control, comprise brick cup and lower brick cup, upper brick cup and lower brick cup inlay fixed Combination by rim of the mouth and female mouth; Described upper brick cup comprises brick body, steel-connecting port, steel runner; Described lower brick cup comprises brick body, steel runner, be wherein provided with at the steel-connecting port place of upper brick cup one with the stopper of steel-connecting port mating shapes.The weak point of this invention is, stopper and the mouth of a river, without aligning structure, when there will be stopper axis runout nozzle axis, affect closing or causing stopper by moment of flexure fracture, to increase produce contact fatigue and lost efficacy with mouth of a river contact force of the mouth of a river.

Summary of the invention

For solving existing stopper mouth of a river flow control device when stopper departs from nozzle axis, effectively cannot prevent stopper and the mouth of a river bias from contact and damaging the problem at stopper and the mouth of a river, the invention provides and a kind ofly can prevent eccentric contact of stopper and the mouth of a river from causing stopper to fracture or the stopper at the mouth of a river of damaging and the stopper rod flow control structure of mouth of a river secure fit.

To achieve these goals, the technical solution used in the present invention is:

The stopper rod flow control structure of a kind of stopper and mouth of a river secure fit, comprise the mouth of a river be arranged on tundish diapire and the stopper matched with the mouth of a river, tundish diapire is also provided with some fixed blocks, fixed block is arranged on the periphery at the mouth of a river, and circumferentially distribute around the axis at the mouth of a river, the upper surface of fixed block, on upper surface, the mouth of a river, is fixed with the guide block matched with fixed block near above the plug of stopper, be provided with reinforcement between guide block upper surface and the outer circumference surface of stopper.When stopper is descending, first must make the fixed block of the guide block on it by coaxially arranging with the mouth of a river, when stopper departs from the axis at the mouth of a river, guide block on stopper will be blocked on the upper surface of fixed block, the mouth of a river cannot be contacted further, prevent that both are eccentric contacts the harmful load caused, thus playing a protective role to stopper and the mouth of a river, avoid both to damage; Reinforcement increases the bonding strength of guide block and stopper, can prevent guide block from being collided fracture failure.

As preferably, fixed block is provided with the guide groove of cylindricality near the one side of nozzle axis, and the axis of guide groove and the axis being parallel at the mouth of a river, guide block is engaged in guide groove.Guide groove be arranged so that this structure is more responsive to the skew of the position of stopper.

As preferably, the cross section of guide groove is semicircle, and accordingly, the outside of guide block and guide groove cooperation place cross section is also semicircle.Than square-section, semicircular cooperation cross section is more responsive to the skew of both position, can ensure like this guide block can smoothly by guide groove in, the dead in line at stopper and the mouth of a river, both can normally closed.

As preferably, the quantity of fixed block is four, and is uniformly distributed around the axis at the mouth of a river.Equally distributed fixed block makes this structure stress in order.

As preferably, the lower surface of guide block and the upper surface of fixed block are equipped with the refractory protection of one deck high rigidity, refractory protection layer thickness is 5mm to 10mm.During owing to departing from center, the mouth of a river at stopper, the lower surface of guide block and the upper surface of fixed block there will be more collision or contact, and the refractory protection of high rigidity can increase both effective time, avoid the deformation failure that both are too early.

The invention has the beneficial effects as follows: by restriction of leading in advance, can prevent stopper from contacting with mouth of a river bias and cause stopper to fracture or the mouth of a river of damaging.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is the top view of Fig. 1.

In figure: 1. tundish, 11. mouths of a river, 12. mounting grooves, 2. stopper, 21. plugs, 22. guide blocks, 23. reinforcements, 3. fixed block, 31. guide grooves, 4. refractory protection.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the invention will be further described.

As Fig. 1, shown in Fig. 2, the stopper rod flow control structure of a kind of stopper and mouth of a river secure fit, comprise the mouth of a river 11 be arranged on tundish 1 diapire and the stopper 2 matched with the mouth of a river 11, tundish 1 diapire is also provided with some fixed blocks 3, fixed block 3 is arranged on the periphery at the mouth of a river 11, and circumferentially distribute around the axis at the mouth of a river 11, the upper surface of fixed block 3 is on upper surface, the mouth of a river, for ensureing the connection reliability of fixed block 3 on tundish 1 diapire, tundish 1 diapire is provided with mounting groove 12, fixed block 3 is fixedly mounted in mounting groove 12, the guide block 22 matched with fixed block 3 is fixed with near above the plug 21 of stopper 2, the position of guide block 22 must meet, before stopper 2 touches the mouth of a river 11, guide block must partially or completely through the upper surface of fixed block 3, which ensure that when stopper 2 touches the mouth of a river 11, stopper 2 is coaxial with the mouth of a river 11, such stopper 2 could normally coordinate with the mouth of a river 11, fixed block 3 is provided with the guide groove 31 of cylindricality near the one side of the mouth of a river 11 axis, the axis of guide groove 31 and the axis being parallel at the mouth of a river 11, and guide block 22 is engaged in guide groove 31, the cross section of guide groove 31 is semicircle, and accordingly, guide block 22 and the outside of guide groove 31 cooperation place cross section are also semicircle, the quantity of fixed block 3 is four, and is uniformly distributed around the axis at the mouth of a river 11, reinforcement 23 is provided with between the outer circumference surface of guide block 22 upper surface and stopper 2, the lower surface of guide block 22 and the upper surface of fixed block 3 are equipped with the refractory protection 4 of one deck high rigidity, refractory protection 4 thickness is 5mm to 10mm.

Claims

1. the stopper rod flow control structure of a stopper and mouth of a river secure fit, comprise the mouth of a river (11) be arranged on tundish (1) diapire and the stopper (2) matched with the mouth of a river (11), it is characterized in that, tundish (1) diapire is also provided with some fixed blocks (3), fixed block (3) is arranged on the periphery of the mouth of a river (11), and circumferentially distribute around the axis of the mouth of a river (11), the upper surface of fixed block (3) is on upper surface, the mouth of a river, the guide block (22) matched with fixed block (3) is fixed with near plug (21) top of stopper (2), reinforcement (23) is provided with between the outer circumference surface of guide block (22) upper surface and stopper (2).

2. the stopper rod flow control structure of a kind of stopper according to claim 1 and mouth of a river secure fit, it is characterized in that, the one side of the close mouth of a river (11) axis of fixed block (3) is provided with the guide groove (31) of cylindricality, the axis of guide groove (31) and the axis being parallel of the mouth of a river (11), guide block (22) is engaged in guide groove (31).

3. the stopper rod flow control structure of a kind of stopper according to claim 2 and mouth of a river secure fit, is characterized in that, the cross section of guide groove (31) is semicircle, and accordingly, guide block (22) and the outside of guide groove (31) cooperation place cross section are also semicircle.

4. the stopper rod flow control structure of a kind of stopper according to claim 1 and mouth of a river secure fit, is characterized in that, the quantity of fixed block (3) is four, and is uniformly distributed around the axis of the mouth of a river (11).

5. a kind of stopper according to claim 1 or 2 or 3 or 4 and the stopper rod flow control structure of mouth of a river secure fit; it is characterized in that; the lower surface of guide block (22) and the upper surface of fixed block (3) are equipped with the refractory protection (4) of one deck high rigidity, refractory protection (4) thickness is 5mm to 10mm.