High silicon steel strip nozzle device

Abstract

The utility model provides a high silicon steel strip nozzle device which comprises a nozzle body, one end of the nozzle body is provided with a feeding cavity, the feeding cavity is arranged in the height direction of the nozzle body, the other end of the nozzle body is provided with at least two nozzle seams, the nozzle seams are arranged in the length direction of the nozzle body, and each nozzle seam is communicated with the feeding cavity. Wherein a flow guide boss is further arranged between every two adjacent nozzle seams, the flow guide bosses are located in the feeding cavity, the two ends, in the length direction of the nozzle body, of the flow guide bosses are integrally connected with the cavity wall of the feeding cavity, flow guide faces are arranged on the two opposite sides, in the width direction of the nozzle body, of the flow guide bosses respectively, and the flow guide faces are obliquely arranged. The high-silicon steel strip forming device can effectively reduce the generation probability of weak spots when a high-silicon steel strip is formed, and greatly improves the quality stability of the high-silicon steel strip.

Description

Technical Field

[0001] The utility model relates to the technical field of high silicon steel strip nozzles, in particular to a high silicon steel strip nozzle device. Background Art

[0002] High-silicon steel strip, also known as electrical steel strip, is an iron-based alloy with high magnetic permeability. It is commonly used to manufacture small and medium-sized transformers and inductors. With the development of electrical industry technology, the requirements for the quality stability of high-silicon steel strip are becoming increasingly higher.

[0003] Currently, the production of high-silicon steel strip typically utilizes a rapid solidification process. Specifically, molten steel is sprayed onto the surface of a cooling roller through a nozzle mounted on an injection device. The molten steel is then cooled by the cooling roller to form a steel strip. However, the outflow end of the existing nozzle only has a single nozzle slot. In actual use, the molten steel is unevenly distributed when it is ejected through the single nozzle slot. This results in weak spots in the cooled steel strip where the molten steel is less distributed, seriously affecting the performance and quality stability of the high-silicon steel strip. Therefore, there is an urgent need to develop a new nozzle device for high-silicon steel strip. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a high-silicon steel strip nozzle device, which aims to solve the technical problem that the outflow end of the nozzle in the prior art only has a single nozzle slit, and during actual use, the molten steel will be unevenly distributed when passing through the nozzle, so that the cooled steel strip will have weak points in the position where the molten steel is less distributed, which seriously affects the performance and quality stability of the high-silicon steel strip.

[0005] The purpose of the utility model is to provide a high silicon steel strip nozzle device, comprising a nozzle body, one end of the nozzle body is provided with a feed cavity, the feed cavity is arranged along the height direction of the nozzle body, the other end of the nozzle body is provided with at least two nozzle slits, the nozzle slits are arranged along the length direction of the nozzle body, and each of the nozzle slits is connected to the feed cavity;

[0006] Among them, a guide boss is also provided between the two adjacent nozzle gaps, the guide boss is located inside the feed cavity, and the two ends of the guide boss along the length direction of the nozzle body are respectively connected integrally with the cavity wall of the feed cavity, and the two opposite sides of the guide boss along the width direction of the nozzle body are respectively provided with guide surfaces, and the guide surfaces are arranged at an angle.

[0007] Compared with the prior art, the beneficial effect of the high silicon steel strip nozzle device of the present invention is that: by arranging at least two nozzle slits connected to the feed chamber on the nozzle body, and arranging a guide boss between the two adjacent nozzle slits, the guide boss is provided with a guide surface, and the setting of the guide boss divides the space at the bottom end of the feed chamber into two independent spaces, each of which is provided with a nozzle slit, so that the molten steel flowing in the feed chamber can be separated by the guide boss into two independent streams of molten steel and ejected from the corresponding nozzle slits. In actual use, the two streams of molten steel are fused and then contacted with the cooling roller to obtain a steel strip. The two streams of molten steel can complement each other when fused to make up for the areas where each other's molten steel is less distributed, thereby effectively reducing the probability of weak points when the steel strip is formed, and greatly improving the quality stability of the high silicon steel strip.

[0008] In addition, the high silicon steel strip nozzle device according to the present invention may also have the following additional technical features:

[0009] Furthermore, in the width direction of the nozzle body, one end of the guide surface is integrally connected to the side wall of the adjacent nozzle slot, and the other end of the guide surface is inclined in a direction away from the nozzle slot.

[0010] Furthermore, one end of the guide boss away from the nozzle slit is a rounded structure.

[0011] Furthermore, the width of the opening of the feed cavity gradually decreases toward the direction where the nozzle slit is located.

[0012] Furthermore, the sum of the depth of the opening of the feed cavity and the depth of the opening of the nozzle slit is consistent with the height of the nozzle body.

[0013] Furthermore, the sum of the height of the guide boss and the slot depth of the nozzle slot is greater than one-third of the height of the nozzle body and less than one-half of the height of the nozzle body.

[0014] Furthermore, the cross-sections of the feed cavity and the nozzle slit along the length direction of the nozzle are both in the shape of a rounded rectangle.

[0015] Furthermore, two opposite sides of the nozzle body in the width direction are respectively provided with connecting strips, and the connecting strips are arranged adjacent to the inlet of the feed cavity and protrude from the outer surface of the nozzle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural diagram of the high silicon steel strip nozzle device of the utility model at a certain viewing angle;

[0017] Figure 2This is a three-dimensional structural diagram of the high silicon steel strip nozzle device of the utility model from another perspective;

[0018] Figure 3 This is a schematic structural diagram of the high silicon steel strip nozzle device of the utility model at a certain viewing angle;

[0019] Figure 4 for Figure 3 Cross-sectional structure diagram at AA in the middle;

[0020] Figure 5 This is a schematic diagram of the use state of the high silicon steel strip nozzle device of the utility model;

[0021] Among them, the above drawings include the following figure marks: 10-nozzle body; 101-feed chamber; 102-nozzle slit; 20-guide boss; 21-guide surface; 30-connecting strip; 40-conical fusion device; 50-cooling roller; 61-molten steel; 62-high silicon steel strip.

[0022] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0023] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] See also Figures 1 to 5, shown is a high-silicon steel strip nozzle device provided by the present invention, comprising a nozzle body 10, with a feed cavity 101 provided at one end thereof, the feed cavity 101 being arranged along the height direction of the nozzle body 10, and at least two nozzle slits 102 provided at the other end thereof, the nozzle slits 102 being arranged along the length direction of the nozzle body 10, each of the nozzle slits 102 being connected to the feed cavity 101. As a specific example, in this embodiment, the nozzle body 10 is a rectangular parallelepiped structure, with the feed cavity 101 provided at one end thereof for the entry of molten steel, and two nozzle slits 102 spaced apart at the other end thereof, the nozzle slits 102 being connected to the feed cavity 101 for the exit of molten steel. The sum of the depth of the opening of the feed cavity 101 and the depth of the opening of the nozzle slits 102 is consistent with the height of the nozzle body 10. In actual use, molten steel flows into the feed cavity 101 and is ultimately ejected to the outside through the nozzle slits 102.

[0027] Specifically, in this embodiment, Figure 4 As shown, the cross-section of the feed chamber 101 along the height direction of the nozzle body 10 is a conical structure, and the width of the top of the feed chamber 101 is greater than the width of its bottom end. In other words, the width of the cavity mouth of the feed chamber 101 gradually decreases toward the direction of the nozzle slit 102, and the inner side wall of the feed chamber 101 is inclined. Such a design makes it possible for the molten steel to flow in the feed chamber 101. Since the cross-sectional area of the bottom end of the feed chamber 101 is smaller than the cross-sectional area of the top end of the feed chamber 101, the pressure of the molten steel at the bottom end of the feed chamber 101 will be greater than the pressure of the molten steel at the top end of the feed chamber 101. In this way, the output power of the injection equipment when the molten steel is ejected from the nozzle slit 102 can be reduced, the workload of the injection equipment can be reduced, and the service life of the injection equipment can be greatly improved.

[0028] Furthermore, the cross-sections of the feed cavity 101 and the nozzle slit 102 along the length of the nozzle body 10 are both rounded rectangular. It should be understood that the provision of the feed cavity 101 with a rounded rectangular structure can effectively prevent uneven pressure on the molten steel at the corners within the cavity, making the flow of the molten steel in the feed cavity 101 more stable, while the provision of the nozzle slit 102 with a rounded rectangular structure can effectively prevent slag from forming at the corners of the nozzle slit 102 during the process of the molten steel flowing out of the nozzle slit 102, thereby reducing the occurrence of burrs and scratches on the produced high-silicon steel strip, and effectively ensuring the quality of the high-silicon steel strip.

[0029] In this embodiment, a guide boss 20 is further provided between two adjacent nozzle slits 102. The guide boss 20 is used to separate the molten steel in the feed chamber 101 and guide it to the nozzle slits 102 on both sides, so that the molten steel entering the feed chamber 101 can be divided into two streams for spraying. Figure 4As shown, the guide boss 20 is located at the bottom end of the interior of the feed chamber 101. The guide boss 20 divides the bottom area of the feed chamber 101 into two independent spaces, and each space is connected to a nozzle slit 102. As a specific example, in this embodiment, the two ends of the guide boss 20 along the length direction of the nozzle body 10 are integrally connected to the cavity wall of the feed chamber 101, and the two opposite sides of the guide boss 20 along the width direction of the nozzle body 10 are respectively provided with guide surfaces 21, and the guide surfaces 21 are inclined. In the width direction of the nozzle body 10, one end of the guide surface 21 is integrally connected to the side wall of the adjacent nozzle slit 102, and the other end of the guide surface 21 is inclined in the direction away from the nozzle slit 102. Furthermore, the end of the guide boss 20 away from the nozzle slit 102 is a rounded structure.

[0030] Furthermore, the sum of the height of the guide boss 20 and the depth of the nozzle slit 102 is greater than one-third of the height of the nozzle body 10 and less than one-half of the height of the nozzle body 10. In this way, when the molten steel flows to the bottom position of the feed chamber 101, it can be automatically separated into two streams of molten steel by the guide boss 20 and sprayed out from the corresponding nozzle slit 102.

[0031] Furthermore, connecting strips 30 are provided on opposite sides of the nozzle body 10 in the width direction, respectively, through which the nozzle body 10 is detachably connected to the spraying device. In this embodiment, the connecting strip 30 is disposed adjacent to the inlet of the feed chamber 101 and protrudes from the outer surface of the nozzle body 10. The side of the connecting strip 30 facing away from the nozzle slit 102 is flush with the inlet at the top of the feed chamber 101. It should be noted that the connection structure between the nozzle body and the external spraying device in the present invention is not limited to the connecting strip structure in this embodiment, and may also adopt other structural designs that can achieve the purpose of the present invention.

[0032] In actual use, the working principle of the high silicon steel strip nozzle device in this embodiment can be: Figure 5As shown, the nozzle body 10 is provided with a nozzle slot 102, one end of which is connected to a conical fuser 40. The molten steel 61 enters from the top of the feed chamber 101, and is separated into two independent streams of molten steel 61 by the guide boss 20 in the process of flowing toward the two nozzle slots 102 at the bottom of the feed chamber 101. The two streams of molten steel 61 are respectively ejected from the corresponding nozzle slots 102. After being ejected through the two nozzle slots 102, the two streams of molten steel 61 are re-fused under the action of the conical fuser 40. The fused molten steel 61 then contacts the cooling roller 50 and is rapidly cooled by the roller surface of the cooling roller 50 to form a high-silicon steel strip 62. It should be noted that the location of the weak point on the high-silicon steel strip 62 is determined when the molten steel 61 passes through the nozzle slit 102. Since the distribution of the molten steel 61 when passing through the nozzle slit 102 is completely random, the generation of the weak point is also random and irregular. However, when using the high-silicon steel strip nozzle device of the present application, although the molten steel 61 passing through the two nozzle slits 102 is also randomly distributed, the two are independent of each other and do not interfere with each other. When the two streams of molten steel 61 are re-fused together through the conical fusion device 40, the molten steel 61 after passing through the two nozzle slits 102 will complement each other and make up for each other's defects. In this way, only when the molten steel 61 passing through the two nozzle slits 102 is too little at the same time and in the same position will a weak point be formed on the high-silicon steel strip 62. The probability of this happening is extremely low, which can effectively avoid the generation of weak points on the high-silicon steel strip 62 and greatly improve the quality stability of the high-silicon steel strip 62.

[0033] In summary, the beneficial effect of the high-silicon steel strip nozzle device of the present invention is that: by arranging at least two nozzle slits on the nozzle body and arranging a guide boss between the two adjacent nozzle slits, the setting of the guide boss divides the space at the bottom end of the feed chamber into two independent spaces, and each independent space is respectively provided with a nozzle slit, so that the molten steel flowing in the feed chamber can be separated by the guide boss into two independent streams of molten steel and sprayed out from the corresponding nozzle slits. In actual use, the two streams of molten steel are fused and then contacted with the cooling roller to obtain a steel strip. The two streams of molten steel can complement each other when fused to make up for the areas where each other's molten steel is less distributed, thereby effectively reducing the probability of weak points when the steel strip is formed, and greatly improving the quality stability of the high-silicon steel strip.

[0034] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A high silicon steel strip nozzle device, characterized in that: The nozzle body comprises a nozzle body, wherein one end of the nozzle body is provided with a feed cavity, the feed cavity is arranged along the height direction of the nozzle body, and the other end of the nozzle body is provided with at least two nozzle slits, the nozzle slits are arranged along the length direction of the nozzle body, and each of the nozzle slits is connected to the feed cavity; Among them, a guide boss is also provided between the two adjacent nozzle gaps, the guide boss is located inside the feed cavity, and the two ends of the guide boss along the length direction of the nozzle body are respectively connected integrally with the cavity wall of the feed cavity, and the two opposite sides of the guide boss along the width direction of the nozzle body are respectively provided with guide surfaces, and the guide surfaces are arranged at an angle.

2. The high silicon steel strip nozzle device according to claim 1, characterized in that: In the width direction of the nozzle body, one end of the guide surface is integrally connected to the side wall of the adjacent nozzle slot, and the other end of the guide surface is inclined in a direction away from the nozzle slot.

3. The high silicon steel strip nozzle device according to claim 1, characterized in that: One end of the guide boss away from the nozzle slit is a rounded structure.

4. The high silicon steel strip nozzle device according to claim 1, characterized in that: The width of the opening of the feed cavity gradually decreases toward the direction where the nozzle slit is located.

5. The high silicon steel strip nozzle device according to claim 1, characterized in that: The sum of the cavity opening depth of the feed cavity and the slit opening depth of the nozzle slit is consistent with the height of the nozzle body.

6. The high silicon steel strip nozzle device according to claim 5, characterized in that: The sum of the height of the guide boss and the slot depth of the nozzle slot is greater than one-third of the height of the nozzle body and less than one-half of the height of the nozzle body.

7. The high silicon steel strip nozzle device according to claim 1, characterized in that: The cross sections of the feed cavity and the nozzle slit along the length direction of the nozzle are both in the shape of a rounded rectangle.

8. The high silicon steel strip nozzle device according to claim 1, characterized in that: Two opposite sides of the nozzle body in the width direction are respectively provided with connecting strips, and the connecting strips are arranged adjacent to the inlet of the feed cavity and protrude from the outer surface of the nozzle body.

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