Protection device for feed opening

Abstract

The utility model relates to the technical field of metal smelting, in particular to a protection device for a feed opening. According to the device, the elastic steel sheets are arranged on the inner wall of the feed opening water jacket in a crossed manner, so that direct contact between raw materials and the inner wall of the feed opening water jacket can be avoided, that is, in the feeding process, the raw materials cannot directly collide with the inner wall of the feed opening water jacket to cause partial abrasion when entering a furnace; the elastic steel sheet can shake to a certain degree under the impact action of the raw materials, so that the raw materials are prevented from being bonded at the discharging opening; the elastic steel sheet part prevents the high-temperature melt from being violently stirred in the furnace, and splashing materials form coking at the position of the discharging opening.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting, in particular to a protective device for a feeding port. Background Art

[0002] At present, a smelting furnace refers to a device that melts metal ingots and some scrap metals and adds necessary alloy components, and then melts them into the required alloy through operations such as slagging and refining. When in use, a large amount of heat will be generated in the smelting furnace, which needs to be cooled. The blanking nozzle water jacket came into being in such an environment. Due to the extremely high temperature of the smelting furnace, the working conditions of the blanking nozzle water jacket are harsh, the heat radiation temperature is as high as more than 1000℃, and it is continuously impacted by the charge. The traditional blanking nozzle water jacket adopts a steel structure. The steel structure is prone to deformation and cracking in a high-temperature working environment, resulting in water leakage. It is also continuously impacted by the charge, resulting in a very short service life of the blanking nozzle water jacket. At the same time, it brings great difficulties to the operator in the use and maintenance of the blanking nozzle water jacket. The operating temperature of the operator is also very high, and it affects the continuous production on site and reduces production efficiency.

[0003] In the patent application for a ductile iron blanking water jacket with patent number 201220449441.6, suitable heat-resistant ductile iron material is selected, a reasonable casting structure is designed, and a cooling water pipe is arranged in the ductile iron casting body. A circulating cooling water pipe is arranged inside the ductile iron blanking water jacket, one end of the cooling water pipe is arranged at the upper edge of the blanking water jacket, the cooling water pipe extends from the upper edge of the blanking water jacket to the lower part of the blanking water jacket, and is arranged in a straight and winding manner from top to bottom and then from bottom to top inside the blanking water jacket, and the other end of the cooling water pipe is arranged at the lower part of the blanking water jacket.

[0004] The existing device can achieve a cooling effect on the water jacket of the discharge port to a certain extent by setting a cooling water pipe. However, when the raw materials continuously enter the furnace, they will collide with the inner wall of the water jacket of the discharge port and cause partial wear. In addition, in order to improve the economic benefits of output, the composition of the mineral powder is becoming more and more complex, and the moisture control in the raw materials is unstable, which will cause adhesion at the discharge port. Moreover, due to the violent reaction in the furnace, the high-temperature melt is violently stirred and splashed in the furnace, which will form coke at the discharge port, causing the discharge port to be blocked. Therefore, manual or machine cleaning is required. When manual or machine cleaning is performed, due to the continuous feeding operation, poor visibility during cleaning and the uncontrollable nature of human operation, the water jacket at the discharge port will be damaged or directly pierced through. Summary of the Invention

[0005] At present, due to the unstable control of moisture in the raw materials, they will stick together at the discharge port. In addition, due to the violent reaction in the furnace, the high-temperature melt will be violently stirred and splashed in the furnace, forming coke at the discharge port, causing the discharge port to be blocked. Therefore, it needs to be cleaned manually or by machine. When cleaning manually or by machine, due to the continuous feeding operation, poor visibility during cleaning and the uncontrollable nature of human operation, the water jacket at the discharge port will be damaged or directly penetrated.

[0006] In order to overcome the problems existing in the prior art, the utility model provides a feeding port protection device, which arranges multiple spring steel sheets on the inner wall of the feeding port. With the help of the elastic force of the spring steel sheets, the raw materials can fall downward under the action of the elastic force after falling into the feeding port, so as not to stick to the inner wall of the feeding port. The spring steel sheets can also partially prevent the high-temperature melt in the furnace from splashing and forming coking at the feeding port.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions:

[0008] A protective device for a feeding port comprises a feeding port water jacket, and is characterized in that an elastic component for anti-wear protection is provided on the inner wall of the feeding port water jacket.

[0009] Furthermore, the elastic component is an elastic steel sheet.

[0010] Preferably, the elastic steel sheets are staggered and arranged obliquely on the inner wall of the water jacket of the feed port, with an inclination angle of 30-60 degrees.

[0011] Different thickness soles are arranged at both ends of the elastic steel sheet, and the whole sheet is in the shape of a shoe pad.

[0012] The thick end of the elastic steel sheet is connected to the inner wall of the water jacket of the feed port.

[0013] Compared with the existing technology, the beneficial effects of the present invention are embodied in:

[0014] When the device is in use, 1. the elastic steel sheet on the furnace wall avoids direct contact between the raw materials and the inner wall of the discharge port water jacket, that is, during the discharge process, the raw materials will not directly collide with the inner wall of the discharge port water jacket when entering the furnace and cause partial wear; 2. under the impact of the raw materials, the elastic steel sheet will generate a reverse elastic force on the material falling into the discharge port water jacket due to the material properties of the elastic steel sheet, which will produce a certain degree of shaking, thereby avoiding the adhesion of the raw materials at the discharge port; 3. The elastic steel sheet partially blocks the high-temperature melt from being violently stirred in the furnace and the splashing materials from forming coke at the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of the feed port water sleeve of the present utility model.

[0016] Figure 2 This is a schematic structural diagram of the cooling water pipe of the present invention.

[0017] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0018] Figure 4 It is a structural diagram of the present utility model.

[0019] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the present utility model.

[0020] Figure 6 It is a schematic diagram of the overall cross-sectional structure of the elastic steel sheets of the present invention arranged in a staggered manner.

[0021] The marks in the figure indicate: 1. Water inlet; 2. Water outlet; 3. Isolation switch; 4. Cooling water pipe; 5. Inner wall of the water jacket of the feed port; 6. Outer wall of the water jacket of the feed port; 7. Nickel-based surfacing area; 8. Wire clamp; 9. Water jacket of the feed port; 10. Elastic steel sheet; 11. Feed port channel; 12. Feed port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "several" means two or more, unless otherwise clearly and specifically defined.

[0024] The inventors have found that existing cooling pipes are often long. After the cooling water enters the pipe, due to the extremely high temperature inside the furnace, the temperature of the cooling water in the cooling pipe will gradually increase during the flow process. The temperature of the cooling water far away from the water inlet is higher, and the cooling efficiency is poor.

[0025] Based on the above findings, the present application provides a feed port protection device, which facilitates water inlet by setting up multiple groups of cooling pipes and arranging the multiple groups of cooling pipes in parallel. It also shortens the length of the cooling pipes themselves. The cooling water travels a shorter distance in the pipes, ensuring that the water temperature in the cooling pipes will not be very high, thereby improving the cooling efficiency.

[0026] Example 1

[0027] See also Figure 1-5 The feeding port protection device of the present invention protects the feeding port channel 11 and also includes a feeding port water jacket 9. The inner wall 5 of the feeding port water jacket is provided with an elastic component for anti-wear protection.

[0028] Furthermore, the elastic component may be an elastic steel sheet 10, and the shape of the elastic steel sheet 10 is similar to that of a shoe insole.

[0029] As an example, the thicker end of the elastic steel sheet 10 is connected to the inner wall 5 of the water jacket of the feed port, and the elastic steel sheet 10 is tiltedly arranged on the inner wall 5 of the water jacket of the feed port, with an inclination angle of 30-60 degrees.

[0030] Furthermore, a certain gap is left between the elastic steel sheets 10 to facilitate the falling of materials. Under the impact of the raw materials, the elastic steel sheets 10 will generate a reverse elastic force on the materials falling into the water jacket 9 of the discharge port due to the material properties of the elastic steel sheets 10, which will produce a certain degree of shaking, thereby avoiding the adhesion of the raw materials at the discharge port 12.

[0031] It should also be noted that the elastic steel sheet 10 located at the lower end of the discharge port water jacket 9 can, to a certain extent, block the material splashed out of the furnace due to violent stirring, prevent it from forming coke at the bottom of the discharge port water jacket 9, and protect the discharge port water jacket 9.

[0032] Example 2

[0033] See also Figure 6 The elastic steel sheets 10 in this embodiment are tilted and staggered on the inner wall 5 of the water jacket of the discharge port. It should be noted that the staggered distribution method can make the material on the elastic steel sheet 10 shake better. Even the shaking of different elastic steel sheets 10 will drive the shaking of the elastic steel sheets 10 staggered with them, further increasing the activity range of the material on the elastic steel sheet 10, reducing its residence time on the elastic steel sheet 10, and thus avoiding the material from sticking to the elastic steel sheet 10.

[0034] Example 3

[0035] See also Figure 1-5In this embodiment, a cooling water pipe 4 is arranged in the feed port water jacket 9, and the water inlet 1 of the cooling water pipe 4 is arranged in parallel on one side of the feed port water jacket 9, and the water outlet 2 of the cooling water pipe 4 is arranged on the other side of the feed port water jacket 9.

[0036] It should be noted that there are multiple groups of cooling water pipes 4 , and a disconnect switch 3 is provided between each group of cooling water pipes 4 .

[0037] In a specific example of the present invention, the arrangement of multiple groups of cooling water pipes 4 can shorten the overall length of a single cooling water pipe 4, and avoid the cooling water flowing through the cooling water pipe 4 over a large distance, resulting in a high temperature of the cooling water and affecting the cooling efficiency. Moreover, the design of the multiple groups of cooling water pipes 4 allows the cooling water pipes 4 to be laid in the discharge port water jacket 9 over as large an area as possible, which can improve the cooling efficiency to a greater extent.

[0038] In the above technical solution, the cooling water pipe 4 extends from the outside of the feed port water jacket 9 to the lower inside of the feed port water jacket 9 and is arranged in a U shape between the inner wall 5 and the outer wall 6 of the feed port water jacket.

[0039] In a specific application, the U-shaped arrangement can distribute the cooling water pipes 4 at the bottom of the feed port water jacket 9 while avoiding the wear of the cooling water pipes 4 caused by hanging.

[0040] As an example, the multiple groups of cooling water pipes 4 share a water inlet 1 , and the cooling water is diverted to different cooling water pipes 4 by controlling the isolation switch 3 .

[0041] In some embodiments, each group of cooling water pipes 4 is distributed along the inner wall 5 of the discharge port water jacket. Looking into the discharge port water jacket 9 from the upper end, the cooling water pipes 4 are distributed in a round cake shape along the inner wall 5 of the discharge port water jacket inside the discharge port water jacket 9. The cooling water pipes 4 are fixed to the inner wall 5 of the discharge port water jacket with wire clips 8 to prevent the cooling water pipes 4 from falling off the inner wall 5 of the discharge port water jacket.

[0042] Optionally, the water outlets 2 of the cooling water pipes 4 are provided in multiple groups, so as to collect the cooling water in the cooling water pipes 4 and connect the water outlets 2 of each group of cooling water pipes 4 together.

[0043] The specific application process of the discharge port water jacket 9 with the cooling water pipe 4 in the metallurgical production process of molten pool smelting is: the cooling water is first injected into the water inlet 1 of the first cooling water pipe 4. At this time, the isolation switch 3 is closed, and the cooling water flows into the first cooling water pipe 4. After a period of time, the isolation switches 3 are opened one after another, so that the cooling water flows into other cooling water pipes 4 in turn. With the arrangement of the cooling water pipes 4 in the discharge port water jacket 9, after the cooling water enters the cooling water pipe 4, the discharge port water jacket 9 can cool the high temperature in the furnace to a certain extent.

[0044] Example 4

[0045] See also Figure 1 In this embodiment, the inner wall 5 of the blanking port water jacket uses a stainless steel jacket with a thickness of 2 cm, and the outer wall 6 of the blanking port water jacket uses a 1 cm steel plate. The water inlet 1 of the cooling water pipe 4 is cast transversely around the feeding port between the inner wall 5 of the blanking port water jacket and the outer wall 6 of the blanking port water jacket. The use of stainless steel seamless welding eliminates the possibility of open welding. The inner wall 5 of the blanking port water jacket uses a stainless steel jacket with a thickness of 2 cm, which improves the wear resistance and reduces the possibility of being penetrated by the material in the furnace. The inner wall 5 of the blanking port water jacket and the outer wall 6 of the blanking port water jacket exceed the blanking port water jacket 9 by about 6 cm at the bottom. The exceeding part is fully welded by nickel-based surfacing to form a nickel-based surfacing area 7, which ensures heat dissipation performance and high temperature resistance and enhances corrosion resistance.

[0046] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective device for a feed port, comprising a feed port water jacket (9), characterized in that: The inner wall (5) of the feed port water jacket is provided with an elastic component for anti-wear protection.

2. A protective device for a feed opening according to claim 1, characterized in that: The elastic component is an elastic steel sheet (10).

3. A protective device for a feed opening according to claim 2, characterized in that: The elastic steel sheets (10) are arranged in a staggered distribution on the inner wall (5) of the feed port water jacket.

4. A protective device for a feed opening according to claim 3, characterized in that: The elastic steel sheet (10) is arranged obliquely on the inner wall (5) of the feed port water jacket, and the inclination angle is 30-60 degrees.

5. A protective device for a feed opening according to claim 4, characterized in that: The two ends of the elastic steel sheet (10) are provided with different thicknesses, and the whole is in the shape of a shoe pad.

6. A protective device for a feed opening according to claim 5, characterized in that: The thick end of the elastic steel sheet (10) is connected to the inner wall (5) of the water jacket of the feed port.

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