CN207533956U - Middle package incomplete steel ejecting device - Google Patents

Abstract

The utility model relates to a tundish residual steel ejecting device, which comprises a top cone, a support plate, a base, a hydraulic device, a movable buffer plate, a spiral spring, a push rod, and a support frame. There is a square support plate at the bottom of the cone, a movable buffer plate is set on the cone, a coil spring is provided on the top cone between the movable buffer plate and the support plate, and a base is provided at the bottom of the support plate, and the support plate and the base are supported by The frame is fixedly connected, and a hydraulic device fixed on the base is provided between the support plate and the base. The hydraulic device is provided with a push rod, and the front end of the push rod is inserted into the support plate to push the movable buffer plate through the support plate. The utility model can effectively avoid equipment damage during the ejection and removal process of residual steel in the tundish; it can avoid the jamming of the ejector rod and the outflow hole of the tundish during the ejection process of residual steel; Damage to the refractory material in the tundish increases the service life of the tundish.

Description

A tundish residual steel ejector

technical field

The utility model relates to the field of continuous casting tundish maintenance, in particular to a device capable of ejecting the solidified residual steel in the tundish after casting.

Background technique

The tundish is a device for the transition of molten steel between the ladle and the mold of the continuous casting machine. It is used to stabilize the steel flow and reduce the erosion of the steel flow on the slab shell, so as to facilitate the floating of non-metallic inclusions, thereby improving the quality of the slab. For the multi-strand continuous casting machine, it is used to divide the molten steel, and it acts as a link between the previous and the next when the multi-furnace continuous casting is performed. In order to facilitate the floating of non-metallic inclusions in the molten steel and the stability of the liquid level of the mold, the volume of the tundish is gradually increasing. Since the liquid steel level in the tundish will continue to decrease at the end of the pouring time, when it reaches the critical height, a vortex will be generated on the liquid steel surface, causing the steel slag on the liquid steel surface to be drawn into the mold by the vortex, not only The cleanliness of molten steel is reduced, and even steel leakage accidents may be caused. In order to prevent the occurrence of vortex slag, when the mold pulls the remaining molten steel in the tundish at the end of the casting time, it will stop casting at a critical height, and a certain amount of residual steel will remain in the tundish, and the residual steel will follow the tundish. The off-line is hoisted to the tundish preparation area together. During this period, the temperature in the tundish is still relatively high, and the residual steel will exist in the form of molten steel. In the tundish preparation area, the residual molten steel in the tundish will gradually solidify as time goes by. During the preparation of the tundish, it is necessary to remove the solidified residual steel, but since the solidified residual steel is solidified at the bottom of the tundish, it is very difficult to remove it directly. Usually, the cover of the tundish is opened, and then the tundish is turned over. Residual steel is removed. This method of removing residual steel not only takes a long time to process and is labor-intensive and the effect is very bad, but also easily causes the refractory material on the wall to fall off, which increases the repair cost.

In order to remove the solidified residual steel, the patent with the authorized announcement number CN202398807U proposes "a device for cleaning residual steel in continuous casting tundish", which is characterized in that it includes a base, a round steel, and a lifting ring. The base is provided with a round hole, and the round steel It is fixed in the round hole of the base, and there are lifting rings on both sides of the base. Although the new type can well solve the removal of residual steel in the tundish, it also has certain shortcomings. In the process of ejecting the residual steel in the tundish from the bottom of the tundish, since there is no buffer between the round steel and the bottom of the tundish, The base often collides with the sliding machinery or bottom casing at the bottom of the tundish, resulting in damage to the sliding machinery or bottom casing.

In order to solve the deficiencies in the existing devices, the invention provides a tundish residual steel ejecting device.

Contents of the invention

The technical problem to be solved by the utility model is to provide a tundish residual steel ejector device, which prevents mechanical damage to the tundish shell or the bottom of the tundish during the ejection and removal process of the tundish residual steel, and prevents the ejector rod from contacting the middle The occurrence of stuck phenomenon of the outflow hole of the tundish can effectively avoid damage to the refractory material in the tundish at the same time, and improve the efficiency of the tundish preparation and treatment and the service life of the tundish.

In order to achieve the above object, the utility model adopts the following technical solutions:

A tundish residual steel ejection device, including a top cone, a support plate, a base, a hydraulic device, a movable buffer plate, a coil spring, a push rod, and a support frame. A square support plate, a movable buffer plate is set on the cone, a coil spring is provided on the top cone between the movable buffer plate and the support plate, a base is provided at the bottom of the support plate, and the support plate and the base are fixedly connected by a support frame. A hydraulic device fixed on the base is provided between the support plate and the base, and a push rod is arranged on the hydraulic device, the front end of the push rod is inserted into the support plate to push the movable buffer plate through the support plate.

The height of the top cone is 500-800 mm, and the diameter of the cross-section of the cone is 60-120 mm.

The material of the top cone is 65Mn steel.

Compared with the prior art, the beneficial effects of the utility model are:

1) It can effectively avoid equipment damage due to the collision between the base and the tundish shell or the sliding machinery at the bottom of the tundish during the ejection and removal of residual steel in the tundish;

2) Through the ejector device, it is possible to avoid the phenomenon of jamming of the ejector rod and the outlet hole of the tundish during the ejection process of residual steel, and at the same time, it can effectively avoid damage to the refractory material in the tundish, and improve the efficiency of the tundish. service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the application structure of the utility model.

Fig. 3 is a top view of the utility model.

In the figure: tundish 1, residual steel 2, tundish bottom steel plate 3, top cone 4, support plate 5, base 6, hydraulic device 7, movable buffer plate 9, coil spring 10, push rod 11, support frame 12.

Detailed ways

The specific embodiment of the utility model is further described below in conjunction with accompanying drawing:

As shown in Figures 1-3, a tundish residual steel ejector includes a top cone 4, a support plate 5, a base 6, a hydraulic device 7, a movable buffer plate 9, a coil spring 10, a push rod 11, and a support frame 12. In order to improve the wear resistance of the top cone, the material is 65Mn steel. The front end of the top cone 4 is elliptical and convex, the height of the cone is 600mm, and the diameter of the cross section of the cone is 80mm. A square support plate 5 is arranged at the bottom of the top cone, and a groove is opened in the center of the support plate 5, so that the tail of the top cone 4 can be embedded in the groove, and then the top cone 4 is vertically welded and fixed on the support plate 5 superior. In order to play a buffer role in the process of jacking up the residual steel 2 in the tundish 1, a movable buffer plate 9 is set on the cone, and a coil spring 10 is provided on the top cone 4 between the movable buffer plate 9 and the support plate 5 .

The bottom of the support plate 5 is provided with a base 6, and the support plate 5 and the base 6 are fixedly connected by a support frame 12. After the top cone 4 is stuck in the tundish flow steel hole 8, it can be pulled out smoothly. A hydraulic device 7 fixed on the base 6 is arranged between them, and a push rod 11 is arranged on the hydraulic device 7 , and the front end of the push rod 11 is inserted into the support plate 5 . When the push rod 11 is not being pushed, the front end surface and the upper surface of the support plate 5 remain on the same plane.

During the operation of the top cone 4, if the top cone 4 is not stuck in the tundish flow steel hole 8, the hydraulic device 7 may not be activated. If the top cone 4 is stuck in the steel hole 8 of the tundish and cannot be pulled out during the process of topping the residual steel 2 in the tundish 1, start the hydraulic device 7 to push the push rod 11 out to the movable buffer plate 9 The lower surface of the buffer plate 9 moves upward. When the upper surface of the buffer plate 9 touches the steel plate 3 at the bottom of the tundish, the top cone 4 can be pulled out smoothly with the help of the thrust of the hydraulic device 7 .

The above is only the basic principle of the utility model, and does not limit the utility model in any way. All equivalent changes and modifications according to the utility model are within the scope of the technical protection scheme of this patent.

Claims (2)

1. A tundish residual steel ejector is characterized in that it comprises a top cone, a support plate, a base, a hydraulic device, a movable buffer plate, a coil spring, a push rod, and a support frame, and the top of the top cone is elliptical, The bottom of the top cone is provided with a square support plate, the cone is covered with a movable buffer plate, the top cone between the movable buffer plate and the support plate is provided with a coil spring, and the bottom of the support plate is provided with a base, the support plate and the base Through the fixed connection of the support frame, a hydraulic device fixed on the base is provided between the support plate and the base. The hydraulic device is provided with a push rod, and the front end of the push rod is inserted into the support plate to push the movable buffer plate through the support plate. 2. A tundish residual steel ejector according to claim 1, characterized in that the height of the top cone is 500-800 mm, and the cross-sectional diameter of the cone is 60-120 mm.