CN215902464U

CN215902464U - Liftable descaling device

Info

Publication number: CN215902464U
Application number: CN202122166967.5U
Authority: CN
Inventors: 张印; 高丽; 曲辉祥; 安百光; 武剑; 吕宜震; 景伟; 吴琦; 张猛; 利先平
Original assignee: Shandong Iron and Steel Co Ltd
Current assignee: Shandong Iron and Steel Co Ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-02-25
Anticipated expiration: 2031-09-08

Abstract

The utility model provides a liftable descaling device, which is arranged between an outlet of a heating furnace and a roughing roller in a steel rolling production line and is arranged on a base of a furnace outlet roller way in parallel with a billet removing device. The liftable descaling device provided by the utility model eliminates the interference problem between the descaling device and the steel billet removing device, and can take steel billet removing operation and steel billet descaling operation into consideration.

Description

Liftable descaling device

Technical Field

The utility model belongs to the technical field of steel rolling equipment, and particularly relates to a liftable descaling device for a steel rolling production line.

Background

In a steel rolling production line, a steel billet is put into a heating furnace for heating, which is the first process of a steel rolling process, the steel billet is generally heated to 1050-. Therefore, the removal of the oxide layer on the surface of the billet prior to rolling (i.e., descaling) is necessary to ensure the surface quality of the finished steel and to reduce the environmental pollution around the billet.

At present, the most adopted mode for removing the scale is a high-pressure water descaling device which is arranged on the discharge side of a heating furnace and arranged between the outlet of the heating furnace and a rough rolling roller, high-pressure water of 15 MPa-25 MPa provided by a descaling pump station is sprayed to the surface of a steel billet through high-pressure water descaling nozzles arranged according to a certain distance and an angle by utilizing a high-pressure jet cutting principle, and more than 95% of the scale on the surface of the steel billet is completely removed through a cooling effect, a rupture effect and a steam scouring effect.

In a steel rolling production line, a set of billet removing device is generally arranged between the outlet of a heating furnace and a first rough rolling roller and is used for removing unqualified billets. However, for a general old steel rolling production line, a high-pressure water descaling facility is not considered in the original process design, the distance between a furnace outlet of a heating furnace and a first roller is small, and if the high-pressure water descaling device is installed, the descaling device and a steel billet removing device interfere with each other, so that the problem that unqualified steel billets cannot be removed is caused.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to design a descaling device that eliminates interference with a billet removing device and simultaneously performs both billet removing work and billet descaling work without requiring large investment and modification of the existing production line.

The liftable descaling device comprises a rack, a lifting oil cylinder, a hydraulic pipeline, a cantilever support, a hinge mechanism, a descaling box and a guide rod, wherein the cantilever support is arranged on the rack and extends in the hanging mode towards the direction of the tapping roller way, the lifting oil cylinder is fixed on the cantilever support, the hydraulic pipeline is connected to the lifting oil cylinder, a piston rod of the lifting oil cylinder is connected to the descaling box through the hinge mechanism, and the guide rod is vertically arranged on one side of the base.

Further, in the lifting descaling device, a control valve group is arranged on the hydraulic pipeline in a matching manner, and the control valve group controls the extension and retraction of the piston rod of the lifting oil cylinder through the hydraulic pipeline.

Further, in the liftable descaling device, the descaling box comprises an annular descaling pipe and a high-pressure water inlet pipe communicated with the annular descaling pipe, a plurality of nozzles are distributed on the annular descaling pipe, and the high-pressure water inlet pipe supplies high-pressure descaling water to the annular descaling pipe.

Further, in the above liftable descaling device, the annular descaling pipe is composed of an upper annular descaling pipe and a lower annular descaling pipe, the upper annular descaling pipe is fixed on the descaling box, and the lower annular descaling pipe is fixed on the base; the high-pressure water inlet pipe is composed of an upper high-pressure water inlet pipe and a lower high-pressure water inlet pipe, the upper high-pressure water inlet pipe is communicated with the upper annular descaling pipe and supplies high-pressure descaling water to the upper annular descaling pipe, and the lower high-pressure water inlet pipe is communicated with the lower annular descaling pipe and supplies high-pressure descaling water to the lower annular descaling pipe.

Further, in the above lifting descaling device, three groups of three nozzles are arranged on the upper annular descaling pipe, each three group of three nozzles are respectively located on the upper side, the left side and the right side of the upper annular descaling pipe of the lifting descaling device, and a group of three nozzles are arranged on the lower annular descaling pipe and located on the upper side of the lower annular descaling pipe.

The liftable descaling device provided by the utility model eliminates the interference problem of the descaling device and the steel billet removing device, can give consideration to both steel billet removing operation and steel billet descaling operation, and particularly can realize reliable steel billet dephosphorization operation through the liftable descaling device provided by the utility model on the premise of not carrying out large investment and not changing the existing production line for an old production line with a short furnace outlet roller way, thereby having better environmental protection benefit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:

FIG. 1 is a schematic structural view of a liftable descaling device according to the present invention, showing the liftable descaling device at a descaling station;

FIG. 2 is a schematic structural view of the liftable descaling device of the present invention, showing the liftable descaling device in a standby position;

FIG. 3 is a schematic structural diagram of a descaling box in the liftable descaling device of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, 2 and 3, the liftable descaling device of the utility model is arranged between an outlet of a heating furnace and a roughing roll in a steel rolling production line and is arranged on a base 10 of a furnace outlet roller way 8 in parallel with a billet removing device 9, and comprises a frame F, a lifting oil cylinder 1, a hydraulic pipeline 2, a cantilever support 3, a hinge mechanism 4, a descaling box 5 and a guide rod 6, wherein the cantilever support 3 is arranged on the frame F and is suspended and extended towards the furnace outlet roller way 8, the lifting oil cylinder 1 is fixed on the cantilever support 3, the hydraulic pipeline 2 is connected to the lifting oil cylinder 1, a piston rod of the lifting oil cylinder 1 is connected to the descaling box 5 through the hinge mechanism 4, and the guide rod 6 is vertically arranged on one side of the base 10.

The hydraulic pipeline 2 is matched with a control valve group, the lifting oil cylinder 1 controls the extension and retraction of a piston rod of the lifting oil cylinder through the control valve group through the hydraulic pipeline 2, and therefore the lifting action of a descaling box 5 connected with the piston rod of the lifting oil cylinder 1 is controlled. When the descaling box 5 is lifted, the guide rod 6 is used for assisting in positioning the descaling box 5, and the descaling box 5 is prevented from deviating.

The descaling box 5 comprises an annular descaling pipe and a high-pressure water inlet pipe communicated with the annular descaling pipe, a plurality of nozzles 15 arranged at a certain distance and at a certain angle are distributed on the annular descaling pipe, the high-pressure water inlet pipe supplies high-pressure descaling water to the annular descaling pipe, and the high-pressure descaling water is sprayed out through the nozzles 15 to descale the steel billet 7. The annular descaling pipe is composed of an upper annular descaling pipe 12 and a lower annular descaling pipe 13, wherein the upper annular descaling pipe 12 is fixed on the descaling box 5 and moves up and down along with the descaling box 5, and the lower annular descaling pipe 13 is fixed on the base 10 through bolts. The high-pressure water inlet pipe is correspondingly composed of an upper high-pressure water inlet pipe 11 and a lower high-pressure water inlet pipe 14, wherein the upper high-pressure water inlet pipe 11 is communicated with the upper annular descaling pipe 12 and supplies high-pressure descaling water to the upper annular descaling pipe 12, and the lower high-pressure water inlet pipe 14 is communicated with the lower annular descaling pipe 13 and supplies high-pressure descaling water to the lower annular descaling pipe 13.

As a specific embodiment, the arrangement of the nozzles on the annular descaling pipe can be as follows: the upper annular descaling pipe 12 is provided with three groups of nozzles, each group of three nozzles is respectively positioned at the upper side, the left side and the right side of the upper annular descaling pipe 12, the lower annular descaling pipe 13 is provided with a group of three nozzles and is positioned at the upper side of the lower annular descaling pipe 13, and therefore, the steel billets 7 conveyed by the tapping roller way 8 can be subjected to high-pressure descaling water blowing treatment in four directions, namely, the upper direction, the lower direction, the left direction and the right direction, and full and efficient descaling operation is realized.

In the normal operation process of a steel rolling production line, when a steel billet 7 sent out from the discharge side of a heating furnace reaches a furnace outlet roller way 8, a swing arm of a billet removing device 9 is positioned below the roller surface of the furnace outlet roller way 8 and is positioned at a standby station, a piston rod of a lifting oil cylinder 1 is in an extending state, a descaling box 5 correspondingly descends onto a base 10 and is positioned at a descaling station, specifically, as shown in fig. 1, at the moment, a nozzle 15 on an annular descaling pipe performs high-pressure descaling water blowing in four directions, namely up, down, left and right, on the steel billet 7 walking on the furnace outlet roller way 8, and thus the steel billet 7 is descaled.

When problem steel billets need to be removed, the piston rod of the lifting oil cylinder 1 retracts to drive the descaling box 5 to ascend along the guide rod 6, the descaling box is lifted away from the tapping roller way 8 and is located at a standby station, and specifically as shown in fig. 2, at the moment, the swing arm of the steel billet removing device 9 rotates clockwise, and the steel billets 7 are pulled to the collecting tank from the tapping roller way 8. After the defective steel billets are removed, the swing arm of the steel billet removing device 9 rotates anticlockwise to the position below the roller surface of the furnace outlet roller way 8 and returns to the standby station, the piston rod of the lifting oil cylinder 1 extends out to drive the descaling box 5 to descend onto the base 10 along the guide rod 6 and return to the descaling station, and descaling operation is continued.

In conclusion, by using the liftable descaling device, when steel billets are descaled, the swing arms of the billet removing devices 9 are positioned below the roll surfaces of the discharging roller ways 8, and the steel billets 7 travel on the discharging roller ways 8 and are descaled without interfering with the billet removing devices 9; when steel billet removing operation is carried out, the descaling box 5 rises to lift away from the furnace outlet roller way 8, and the action of shifting the steel billet 7 from the furnace outlet roller way 8 to the collecting tank by the swing arm of the steel billet removing device 9 is not influenced by the descaling device. Therefore, the liftable descaling device can practically consider both steel billet removing operation and steel billet descaling operation, solves the problem of interference between the descaling device and the steel billet removing device due to short tapping roller ways, can realize reliable steel billet dephosphorization operation through the liftable descaling device on the premise of not carrying out large investment and not changing the existing production line particularly for the old production line with short tapping roller ways, and has better environmental protection benefit.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A liftable descaling device is arranged between a heating furnace outlet and a rough rolling roller in a steel rolling production line and is installed on a base of a furnace outlet roller way in parallel with a billet removing device.

2. The liftable descaling device according to claim 1, wherein a control valve group is arranged on the hydraulic pipeline in a matching manner, and the control valve group controls the extension and retraction of the piston rod of the lifting cylinder through the hydraulic pipeline.

3. The liftable descaling device of claim 1, wherein the descaling box comprises an annular descaling pipe and a high-pressure water inlet pipe communicated with the annular descaling pipe, a plurality of nozzles are distributed on the annular descaling pipe, and the high-pressure water inlet pipe supplies high-pressure descaling water to the annular descaling pipe.

4. The liftable descaling device according to claim 3, wherein the annular descaling pipe is composed of an upper annular descaling pipe and a lower annular descaling pipe, the upper annular descaling pipe is fixed on the descaling box, and the lower annular descaling pipe is fixed on the base; the high-pressure water inlet pipe is composed of an upper high-pressure water inlet pipe and a lower high-pressure water inlet pipe, the upper high-pressure water inlet pipe is communicated with the upper annular descaling pipe and supplies high-pressure descaling water to the upper annular descaling pipe, and the lower high-pressure water inlet pipe is communicated with the lower annular descaling pipe and supplies high-pressure descaling water to the lower annular descaling pipe.

5. The liftable descaling device according to claim 4, wherein three groups of three nozzles are arranged on the upper annular descaling pipe, and each group of three nozzles are respectively positioned on the upper side, the left side and the right side of the upper annular descaling pipe of the liftable descaling device, and a group of three nozzles are arranged on the lower annular descaling pipe and are positioned on the upper side of the lower annular descaling pipe.