EP1944106B1

EP1944106B1 - A slide gate for a molten-steel vessel

Info

Publication number: EP1944106B1
Application number: EP06805069.9A
Authority: EP
Inventors: Yueqin Liu
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-26
Filing date: 2006-10-26
Publication date: 2016-09-07
Anticipated expiration: 2026-10-26
Also published as: JP2010507483A; CN100522419C; EP1944106A1; CN101189087A; EP1944106A4; KR101242783B1; JP4995921B2; WO2008049278A1; KR20090077871A

Description

Field of the Invention

The present invention relates to a ladle flow control system installed on the outer side of base plate at the liquid steel outlet of ladle, which belongs to the technical field of machine manufacturing.

Description of the Prior art

Among the ladle flow control systems of prior art, the rail wheel is generally set on the slider, and the rail is fixed on the carrier frame. The relative motion between the slider and the carrier frame in this flow control system is achieved through the rolling of rail wheel on the rail. Since the pressure transmission in this structure is achieved by means of rail wheel, its force transmission point is constantly changing, which results in rather obvious fluctuation in pressure. In this way, potential safety hazards may exist, so that the safety factor of machine is greatly reduced and untimely maintenance may cause accident.
EP 1 029 618 A1 discloses a molten metal pouring amount control apparatus for adjusting an opening of a nozzle hole in a fixed plate and an opening of a nozzle hole in a sliding plate by sliding a slide frame by means of a driving means, the control apparatus further comprising guide units each including a plurality of steel balls arranged in line between the slide frame and springs, the guide units being provided on both sides of the sliding plate.
DE 2736817B1 discloses a slide gate consisting of a slide plate and a amounting frame. Rollers are set on the slide plate, and rails are fixed on the moulting frame. The relative motion between the slide plate and the mounting frame is achieved through the rolling of rollers on the rails.
WO 2006/027804 A1 discloses a dispensing device for steel casting and the like, showing a first refractory element having a through opening placed in correspondence of a runoff nozzle of the steel casting and a second refractory element associated with the first refractory element and showing a respective through opening. The second element is movable between a first position, wherein the respective openings of the first and the second element are coincident and define a passage gap of said castling, and a second position, wherein the respective openings are moved apart one from the other in order not to allow the passage of the casting. It is also foreseen a pushing means acting on said second refractory element for keeping the second element itself abutted against the first element.

Summary of the Invention

The technical object of the present invention is to provide a ladle flow control system aiming at overcoming the deficiency of prior art. In the relative motion between the slider and the carrier frame, the fluctuation of system pressure is obviously reduced, so that the overall stability of the system is improved.
Said technical object of the present invention is achieved by the features of claim 1. Means of the technical solution are described as follows:
A ladle flow control system including a base plate fixed on the ladle, wherein a housing is fixed on this base plate; the top of the housing is connected with the driving mechanism of ladle sliding nozzle; A carrier frame is provided on this housing, an elastic used for generating pressure is set on the carrier frame, and a slider is provided on the carrier frame. Notches are set on the corresponding surfaces of housing and slider. The bottom plate and the slide plate are respectively embedded in the notch. A rolling mechanism is provided on said carrier frame, and a guide mechanism is set on the slider correspondingly. The guide mechanism correspondingly set on the slider makes reciprocating motion relative to the rolling mechanism set on the carrier frame, so as to control the open or close of ladle sliding nozzle.
The rolling mechanism may be composed of the rollers symmetrically set on the carrier frame, and the guide mechanism may be the guide rail set on the edge of slider. The orientation pin-jointed part is correspondingly set on the inner side at one end of carrier frame and on the outer side at one end of slider, so that the slider may rotate around the carrier frame in a definite mode with the orientation pin-jointed part as its rotating shaft, without the risk of detachment by itself. The orientation pin-jointed part is composed of an arc notch set on the inner side at one end of the carrier frame and a conex correspondingly set on the outer side at one end of slider, or be composed of a conex set on the inner side at one end of carrier frame and an arc notch correspondingly set on the outer side at one end of the slider, with this conex being embedded in the arc notch. This arc notch is in the shape of sleeve with an opening being set on its side wall. The width of this opening is corresponding to the diameter of the conex set on the outer side at the bottom of slider. At the time of assembly, the conex is embedded along the opening of arc notch. The elastic is a spring box with built-in spring nest. The upper and lower ends of this spring box constitute a carrier frame through two mutually connected beams, and this carrier frame is hinged on the housing.
To sum up, in the present invention, the rolling mechanism is symmetrically set on the carrier frame, and the guide mechanism is correspondingly set on the slider. In the relative motion between the slider and the carrier frame, the fluctuation of its pressure is obviously reduced, so that the overall stability of the system is improved.
The technical proposal of the present invention is elaborated below in combination with the attached figures and the embodiments.

Brief Description of the Drawings

Figure 1 is the No.1 overall structure schemes of the embodiment 1 of present invention;
Figure 2 is the structure scheme of the half-axle roller, namely the rolling mechanism of present invention;
Figure 3 is the No.1 structure scheme of the sliders of present invention;
Figure 4 is the No.2 overall structure scheme of the embodiment 1 of present invention;
Figure 5 is the No.2 structure scheme of the slider of present invention;
Figure 6 is the overall structure scheme of the embodiment 2 of present invention.

Detailed Description of the Preferred Embodiments

Embodiment

1

Figure 1 is the No.1 overall structure scheme of the embodiment 1 of present invention. As may be known from Figure 1, the present invention provides a ladle flow control system, which includes the base plate 1 fixed on the ladle; A housing 2 is fixed on this base plate 1, and one end of the housing 2 is connected with the driving mechanism 3 of sliding nozzle. A carrier frame 4 is provided on this housing 2, and an elastic used for generating pressure is provided on the carrier frame 4; A slider 5 is also set through pivot on the carrier frame 4; The notch 21 and notch 51(Not shown in the Figure) are set on the corresponding surfaces of the housing 2 and the slider 5; The bottom plate 22 and the slide plate 52 are respectively embedded in the notch 21 and the notch 51; A rolling mechanism is set on the carrier frame 4, and a guide mechanism is correspondingly set on the slider 5; The guide mechanism correspondingly set on the slider makes reciprocating motion relative to the rolling mechanism set on the carrier frame, so as to control the open or close of the ladle sliding nozzle. The rolling mechanism is the roller 41 set on the carrier frame. Figure 2 is the partial structure scheme of the half-axle roller, the rolling mechanism of present invention. As may be known from Figure 2, said roller 41 may be set as half-axle rollers according to need, and the structure of the half-axle 42 is as shown in Figure 2. The roller 41 is set on the half-axle 42 and may rotate with the half-axle 42 as its shaft. The half-axle 42 is fixed on the carrier frame 4. Figure 3 is the No.1 structure scheme of the slider of present invention. As may be known from Figure 3, the guide mechanism is the rail 51 set at the edge of slider 5. This rail 51 is fixed on the slider 5. Since this rail 51 is an easily worn part, it is required to separately set from the rail 51 and the slider 5, so as to facilitate the replacement of rail 51.
Figure 4 is the No.2 overall structure scheme of the embodiment 1 of present invention. As may be known from Figure 4, the orientation pin-jointed part is correspondingly set on the inner side at the bottom of one end of carrier frame 4 and set on the outer side at the bottom of one end of slider 5, so that the slider 5 rotates around the carrier frame 4 with the orientation pin-jointed part as its rotating shaft, which may facilitate the orientation of slider 5 in the process when it is installed on the carrier frame 4. Figure 5 is the No.2 structure scheme of the slider of present invention. As may be known from Figure 4 in combination with Figure 5, the orientation pin-jointed part is composed of the arc notch 44 set on the inner side at the bottom of one end of carrier frame and the conex 52 set on the outer side at the bottom of one end of slider 5, with this conex 52 being embedded in the arc notch 44. The arc notch 44 is in the shape of sleeve with an opening being set on its sidewall. The width of this opening 441 (As shown in Figure 1) corresponds to the diameter of the conex 52 set on the outer side at the bottom of slider 5. At the time of assembly, the conex 52 will be embedded along the opening 441 of the arc notch 44. As can be known from Figure 1, said elastic is the spring nest 6; A room 45 is provided on the carrier frame 4 to accommodate this spring nest 6. As can be known in combination with Figure 3, the orientation pin-jointed part correspondingly set on the inner side at the bottom of carrier frame 4 and on the outer side at the bottom of slider 5 may also be composed of the bump (not shown in the figure) set on the inner side at the bottom of carrier frame 4 and the notch 53 set on the outer side at the bottom of slider 5. This conex 52 is embedded in the notch 53.
As shown in Figure 1, a cylinder bracket 31 for the driving mechanism of sliding nozzle is set on the top of the housing 2, and three sets of driving mechanisms for sliding nozzle are set in this cylinder bracket 31, which are designed to drive the motion of slider 5. A heat shield panel 7 used for heat insulation is also provided on the external of carrier frame 4.
The assembly process of the ladle flow control system provided in this embodiment is described as follows: Firstly, fix the housing 2 on the base plate 1 of ladle, fix the cylinder bracket 31 of the driving mechanism for sliding nozzle on the top of housing 2, fix the carrier frame 4 with heat shield panel 7 on the housing 2, place the spring nest 6 into the room 45 inside the carrier frame 4 and seal this room. Then, embed the conex 52 on slider 5 into the arc notch 44 on carrier frame 4, turn the slider 5 downward, load the driving mechanism 3 into the cylinder bracket 31 and fix it. Install the well block 8 and the nozzle 9, respectively place them into the bottom plate 22 and the slide plate 52, connect the driving mechanism 3 with the groove (not shown in the Figure) at the head of slider 5, connect the extrusion device with the internal of bottom plate 22 and slide plate 52 and turn the slider 5 upward, so that the slider 5 is buckled with the housing 2 in the carrier frame 4. Install the exchangeable collector nozzle 10 in place before the contraction of driving mechanism 3. Upon the contraction of driving mechanism 3, pull up the slider 5 from the carrier frame 4, and the elastic builds up pressure at this time. Close the heat shield panel 7 and lock it. In this way, the installation of the entire system is completed.

Embodiment 2

Figure 6 is the overall structure scheme of the embodiment 2 of present invention. As may be known from Figure 6, the difference between this embodiment and embodiment 1 consists in the structure of elastic. The elastic in this embodiment is the spring box 100 with built-in spring nest, the upper and lower ends of this spring box 100 constitute a carrier frame 103 through two mutually connected beams 101 and 102, and this carrier frame 103 is hinged on the housing 2.
In this embodiment, the installation procedures for the spring box 100 itself are as follows: The spring rod 104 passes through the spring box 100 through the hole at the bottom of spring box 100; After the long groove (not shown in the Figure) has been put in the spring nest 105, the spring holddown 106 is assembled with the spring rod 104 through the hold on itself and holds down the spring holddown 106 through the action between the nut and spring rod.
Since the other technical characteristics of this embodiment are identical to those of embodiment 1, no more unnecessary details will be given herein. For the detail, please refer to the foregoing.
Although said two embodiments have difference in their internal structures, they have the same casting process: Under the action of the driving mechanism 3, the rolling mechanism makes motion on the guide mechanism to control the stagger and alignment of the nozzle 9 and exchangeable collector nozzle 10 and achieve the open or close of ladle sliding nozzle, so as to control the flow and casting action in the casting process.

Claims

A ladle flow control system, which includes the base plate (1) fixed on the ladle; A housing (2) is fixed on this base plate (1), with the top of housing (2) being connected with the driving mechanism (3) of sliding nozzle; A carrier frame (4) is set on this housing (2), and an elastic used for generating pressure is provided on the carrier frame (4) ; A slider (5) is set on the carrier frame (4) ; notches (21,51) are set on the corresponding surfaces of the housing (2) and slider (5), and bottom plate (22) and slide plate (52) are respectively embedded in the notch (21,51), characterized in that a rolling mechanism is set on said carrier frame (4), a guide mechanism is correspondingly set on the slider (5); the guide mechanism correspondingly set on the slider (5) makes reciprocating motion relative to the rolling mechanism set on the carrier frame (4), so as to control the open or close of the ladle sliding nozzle;
an orientation pin-joint part comprising a convex pin (54) and an arc notch (44,53) is correspondingly set on the inner side at one end of said carrier frame (4) and on the outer side at one end of slider (5), so that the slider (5) rotates around the carrier frame (4) in a definite mode with the orientation pin-joint part as its rotating shaft, without the risk of detachment by itself.
The ladle flow control system of Claim 1, characterized in that said rolling mechanism is composed of rollers (41) symmetrically set on the carrier frame (4) .
The ladle flow control system of Claim 1 or 2, characterized in that said guide mechanism is the rail (55) set at the edge of slider (5) .
The ladle flow control system of Claim 1, characterized in that the arc notch (44) set on the inner side at one end of the carrier frame (4) and the convex pin (54) is correspondingly set on the outer side at one end of slider (5), or the convex pin is set on the inner side at one end of carrier frame (4) and the arc notch (53) correspondingly set on the outer side at one end of the slider (5), with this convex pin (54) being embedded in the arc notch (44) .
The ladle flow control system of Claim 4, characterized in that said arc notch (44) is in the shape of sleeve with an opening (441) being established on its side wall; the width of this opening(441) is corresponding to the diameter of the convex pin(54)set on the outer side at the bottom of slider (5) ; at the time of assembly, the convex pin (54) is embedded along the opening (441) of arc notch (44) .