Electric furnace heating device for square steel

Abstract

The utility model relates to the field of heating equipment, and discloses an electric furnace heating device for square steel, which comprises an electric furnace body and a bottom plate, the electric furnace body comprises a plurality of split furnaces, and each split furnace comprises a plurality of driven rollers, a rotary driving part, a driving roller, a transmission component, a liquid guide sleeve, a cavity, a flow guide pipe, a liquid inlet pipe and a liquid outlet pipe. Cooling water is continuously guided into the cavity of the driven roller through the cooling water circulation system, the effect of cooling the driven roller can be achieved, and the driven roller can continuously convey square steel billets in the high-temperature environment; through the arrangement of the structure, on the premise that square steel billets are conveyed and heated, the length of the split furnace in the electric furnace body can be increased, the heating time of the square steel billets in the split furnace is prolonged, and therefore the section number of the split furnace is reduced, and the overall length of the electric furnace body is shortened.

Description

Technical Field

[0001] The utility model relates to the field of heating equipment, in particular to an electric furnace heating device for square steel. Background Art

[0002] When producing and processing punching and drawing steel cylinders, it is necessary to heat a square steel billet of a certain size to a predetermined process temperature, and then perform subsequent processes such as punching and drawing on the heated square steel billet. When heating the square steel billet, a heating device needs to be used.

[0003] Some of the existing heating devices use gas heating furnaces, which have disadvantages such as large burn damage to the steel billet, more scale generated, and large grinding amount of the bottle billet during use; some also use electromagnetic induction heating furnaces. In order to heat the square steel billet during the conveying process, the heating furnace is divided into multiple split furnaces arranged at intervals in sequence, and conveying rollers are arranged between the split furnaces. In this way, the length of the split furnace is usually short, so that the heating time of the square steel billet in each split furnace is short, which will lead to a large number of sections of the split furnace and a long overall length of the heating furnace. Summary of the Utility Model

[0004] Based on the above problems, the purpose of the utility model is to provide an electric furnace heating device for square steel to solve the problems existing in the above-mentioned prior art.

[0005] The utility model adopts the following technical scheme:

[0006] The utility model provides an electric furnace heating device for square steel, including an electric furnace body. The electric furnace body includes multiple split furnaces arranged at intervals in sequence on a bottom plate. Each split furnace includes multiple driven rollers rotatably connected in a heating cavity, and the multiple driven rollers are arranged side by side at intervals in the horizontal direction; the front side of the heating cavity is power-connected with a driving roller through a rotary driving component, and the driving roller is connected with the adjacent driven roller and between adjacent two driven rollers through a transmission component;

[0007] Both ends of each driven roller are rotatably and sealingly sleeved with liquid guide sleeves, and the liquid guide sleeves are connected with the side wall of the heating cavity; a cavity is arranged inside the driven roller, the liquid guide sleeve is communicated with the cavity, and the liquid guide sleeves on adjacent driven rollers are connected and communicated through a diversion pipe;

[0008] Liquid inlet pipes and liquid outlet pipes are respectively arranged on the liquid guide sleeves of the two driven rollers at the outermost edges, and the liquid inlet pipes and the liquid outlet pipes are respectively connected with a cooling water circulation system.

[0009] Furthermore, two spaced-apart guide rings are sleeved on both the driving roller and the driven roller.

[0010] Further, a plurality of through holes are provided at the end of the driven roller. The plurality of through holes are arranged at intervals along the circumferential direction of the driven roller and are all within the range surrounded by the liquid guide sleeve. The inside of the liquid guide sleeve is communicated with the cavity through the through holes.

[0011] Further, rotary seals are provided on both sides of the liquid guide sleeve. The two rotary seals are respectively located on both sides of the through hole. The liquid guide sleeve is rotationally and sealingly connected to the driven roller through the rotary seals.

[0012] Further, the transmission assembly is arranged as a chain drive.

[0013] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0014] By continuously introducing cooling water into the cavity of the driven roller through the cooling water circulation system, the driven roller can be cooled down, enabling it to continuously convey square steel billets in a high-temperature environment; through the above structural arrangement, on the premise of conveying and heating the square steel billets, the length of the split furnace in the electric furnace body can be increased, the heating time of the square steel billets in the split furnace can be extended, thereby reducing the number of sections of the split furnace and shortening the overall length of the electric furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below with reference to the accompanying drawings.

[0016] Figure 1 is a three-dimensional structural diagram of the electric furnace heating device for square steel of the present utility model;

[0017] Figure 2 is a three-dimensional structural diagram of the split furnace of the present utility model;

[0018] Figure 3 is a layout structural diagram of a plurality of driven rollers of the present utility model;

[0019] Figure 4 is a cross-sectional view of the driven roller of the present utility model.

[0020] Explanation of reference numerals: 1, electric furnace body; 11, split furnace; 110, heating chamber; 111, driven roller; 1111, cavity; 1112, through hole; 112, rotary drive component; 113, driving roller; 114, transmission assembly; 115, liquid guide sleeve; 1151, rotary seal; 116, diversion pipe; 117, liquid inlet pipe; 118, liquid outlet pipe; 119, guide ring; 2, bottom plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] As Figures 1 - 4 shown, in this embodiment, an electric furnace heating device for square steel is disclosed, which includes an electric furnace body 1. The electric furnace body 1 includes a plurality of split furnaces 11 arranged at intervals on a bottom plate 2 in sequence. Each split furnace 11 includes a plurality of driven rollers 111 rotatably connected in a heating cavity 110. The plurality of driven rollers 111 are arranged side by side and at intervals in the horizontal direction; a driving roller 113 is power-connected to the front side of the heating cavity 110 through a rotary driving component 112. The driving roller 113 is connected to the adjacent driven roller 111 and between two adjacent driven rollers 111 through a transmission component 114.

[0023] A liquid guide sleeve 115 is rotatably and sealingly sleeved at both ends of each driven roller 111. The liquid guide sleeve 115 is fixedly connected to the side wall of the heating cavity 110; a cavity 1111 is arranged inside the driven roller 111. The liquid guide sleeve 115 is communicated with the cavity 1111, and the liquid guide sleeves 115 on adjacent driven rollers 111 are connected through a diversion pipe 116.

[0024] Liquid inlet pipes 117 and liquid outlet pipes 118 are respectively arranged on the liquid guide sleeves 115 of the two driven rollers 111 at the outermost edges. The liquid inlet pipes 117 and the liquid outlet pipes 118 are respectively connected to a cooling water circulation system.

[0025] In this embodiment, the intervals between two adjacent driven rollers 111 are the same. The top surfaces of the driven rollers 111 and the driving roller 113 are located on the same horizontal plane. The transmission component 114 is set as a chain drive. The sprockets and the chain are both heat-resistant; the rotary driving component 112 is set as a servo motor. By driving the driving roller 113 to rotate through the rotary driving component 112, all the driven rollers 111 can be driven to rotate in the same direction under the driving of the transmission component 114.

[0026] The cooling water circulation system introduces cooling water into the cavity 1111 of the edge driven roller 111 through the liquid inlet pipe 117 and the liquid guide sleeve 115. The cooling water flows in the cavity 1111 and flows to the cavity 1111 of the adjacent driven roller 111 through the liquid guide sleeve 115 on the other side and the diversion pipe 116. Finally, it flows back to the cooling water circulation system through the liquid outlet pipe 118. After the heat-exchanged cooling water is cooled by the cooling water circulation system, it is introduced into the liquid inlet pipe 117 again; the cooling water can cool the whole of the liquid inlet pipe 117, the liquid guide sleeve 115, the driven roller 111, the diversion pipe 116 and the liquid outlet pipe 118, so that the above components can be continuously used in a high-temperature environment.

[0027] With this solution, the cooling water is continuously introduced into the cavity 1111 of the driven roller 111 through the cooling water circulation system, which can cool down the driven roller 111 and enable it to continuously convey the square steel billet in a high-temperature environment. Through the above structural arrangement, on the premise of conveying and heating the square steel billet, the length of the split furnace 11 in the electric furnace body 1 can be increased, the heating time of the square steel billet in the split furnace 11 can be extended, thereby reducing the number of sections of the split furnace 11 and shortening the overall length of the electric furnace body 1.

[0028] In a further optimized solution, two spaced-apart guide rings 119 are fixedly sleeved on both the driving roller 113 and the driven roller 111. In this embodiment, the guide rings 119 are fixedly attached to the driving roller 113 and the driven roller 111 in a fitting manner. After the cooling water cools down the driven roller 111, it can transfer the cold quantity to the guide ring 119, thereby cooling down the guide ring 119.

[0029] In a further optimized solution, the end of the driven roller 111 is provided with a plurality of through holes 1112. The plurality of through holes 1112 are arranged at intervals along the circumferential direction of the driven roller 111 and are all within the range surrounded by the liquid guide sleeve 115. The inside of the liquid guide sleeve 115 is communicated with the cavity 1111 through the through holes 1112. In this embodiment, the intervals between adjacent two through holes 1112 are the same. Through the provided through holes 1112, the cooling water inside the liquid guide sleeve 115 can flow into the cavity 1111 of the driven roller 111. After flowing in the cavity 1111, it can flow into the inside of the liquid guide sleeve 115 on the other side and then flow through the diversion pipe 116 into the liquid guide sleeve 115 on the next driven roller 111.

[0030] In a further optimized solution, rotary sealing rings 1151 are arranged on both sides of the liquid guide sleeve 115. The two rotary sealing rings 1151 are respectively located on both sides of the through hole 1112. The liquid guide sleeve 115 is rotationally and sealingly connected to the driven roller 111 through the rotary sealing rings 1151. Through the provided rotary sealing rings 1151, the rotational and sealing connection between the liquid guide sleeve 115 and the driven roller 111 is realized.

[0031] It should be noted that the cooling water circulation system is a prior art, and its working principle and usage method are both known, so they will not be elaborated here; the electric furnace body 1 refers to an electromagnetic induction heating furnace.

[0032] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An electric furnace heating device for square steel, comprising an electric furnace body (1), characterized in that: The electric furnace body (1) includes a plurality of split furnaces (11) arranged at intervals in sequence on a bottom plate (2). Each split furnace (11) includes a plurality of driven rollers (111) rotatably connected in a heating chamber (110). The plurality of driven rollers (111) are arranged side by side and at intervals in the horizontal direction. The front side of the heating chamber (110) is power-connected to a driving roller (113) through a rotary driving component (112). The driving roller (113) is connected to the adjacent driven roller (111) and between two adjacent driven rollers (111) through a transmission component (114). Liquid guide sleeves (115) are rotatably and sealingly sleeved at both ends of each driven roller (111). The liquid guide sleeves (115) are connected to the side walls of the heating chamber (110). A cavity (1111) is arranged inside the driven roller (111). The liquid guide sleeves (115) are communicated with the cavity (1111). The liquid guide sleeves (115) on adjacent driven rollers (111) are communicated through a diversion pipe (116). Liquid inlet pipes (117) and liquid outlet pipes (118) are respectively arranged on the liquid guide sleeves (115) of the two driven rollers (111) at the outermost edges. The liquid inlet pipes (117) and the liquid outlet pipes (118) are respectively connected to a cooling water circulation system.

2. The electric furnace heating device for square steel according to claim 1, wherein: Two spaced guide rings (119) are sleeved on both the driving roller (113) and the driven roller (111).

3. The electric furnace heating device for square steel according to claim 1, characterized in that: A plurality of through holes (1112) are arranged at the end of the driven roller (111). The plurality of through holes (1112) are arranged at intervals along the circumferential direction of the driven roller (111) and are all within the range surrounded by the liquid guide sleeve (115). The inside of the liquid guide sleeve (115) is communicated with the cavity (1111) through the through holes (1112).

4. The electric furnace heating device for square steel according to claim 3, characterized in that: Rotary sealing rings (1151) are arranged on both sides of the liquid guide sleeve (115). The two rotary sealing rings (1151) are respectively located on both sides of the through holes (1112). The liquid guide sleeve (115) is rotationally and sealingly connected to the driven roller (111) through the rotary sealing rings (1151).

5. The electric furnace heating device for square steel according to claim 1, characterized in that: The transmission component (114) is arranged as a chain drive.

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