Silica gel cooling roller in precision steel production

Abstract

The utility model relates to the technical field of carrier roller, especially a silica gel cooling carrier roller in the production of precise steel material, including carrier roller body, the carrier roller body includes water -cooling pipe, the middle part of carrier roller body is provided with the cylindrical accommodation cavity, the water -cooling pipe is assembled in the accommodation cavity, the carrier roller body is opened with the water inlet for water inlet, the water outlet for water outlet, the accommodation cavity is linked together with water inlet and water outlet respectively, the water inlet is linked together with the water inlet end of water -cooling pipe, through setting up water -cooling pipe in the accommodation cavity, the water outlet end of water -cooling pipe is linked together with the water outlet, makes the water flow bidirectional flow along the direction of water inlet -water outlet -water inlet, reduces the temperature difference of both ends caused by the continuous temperature rise along the way, makes the cooling effect of the axial each area cooling range of carrier roller body more close, and then makes the overall cooling of steel material even, improves product quality.

Description

Technical Field

[0001] This utility model relates to the field of idler roller technology, and in particular to a silicone cooling idler roller used in the production of precision steel. Background Technology

[0002] Cooling rollers are used in the production of precision steel. They are usually composed of a metal roller core and an outer layer of high thermal conductivity silicone. They are used to cool the product while it is being transported. They are used to cool and shape the product from the previous annealing process and then transport it to the next processing stage to avoid the product temperature from getting too high and to ensure the flatness and uniform heating of the steel during the transport process. Since the cooling roller is located in the unloading and conveying process of the annealing furnace, the temperature of the steel product is relatively low at this time.

[0003] Chinese Patent CN206243967U discloses a novel idler roller, comprising an idler roller body. The idler roller body has multiple slots extending along its axial direction, with support plates engaged within these slots. A left roller shaft is located at the left end of the idler roller body. Cooling water channels are located within the idler roller body, with an inlet channel communicating with the cooling water channels within the left roller shaft. A right roller shaft is located at the right end of the idler roller body, with an outlet channel communicating with the cooling water channels within the right roller shaft. Guide grooves are provided on the support plates, and these guide grooves are aligned with each other along the circumference of the idler roller body. This design is structurally sound, durable, easy to repair, and provides cooling, solving the problems of short lifespan and poor high-temperature resistance found in traditional idler rollers. It better meets the transportation needs of the ironmaking process and achieves excellent performance. However, the aforementioned new idler roller structure has the following defects: its cooling water channels extend spirally within the idler roller body, and in some designs, the diameter of the cooling water channels gradually decreases from the water inlet end to the water outlet end of the idler roller. This causes the cooling water to enter from the water inlet end of the left roller shaft and then flow along a long spiral path to the water outlet end of the right roller shaft. During the flow, the cooling water continuously absorbs heat from the idler roller and its temperature continues to rise. When the cooling water reaches the water outlet end of the idler roller, its own temperature is already very high, which weakens its cooling capacity for the water outlet end area of ​​the idler roller. Ultimately, this results in uneven cooling at both ends of the product passing through the idler roller, affecting product quality. Therefore, this issue urgently needs to be addressed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a silicone cooling roller for precision steel production, thereby overcoming the deficiencies in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a silicone cooling roller for precision steel production, comprising a roller body and a water cooling pipe, wherein a cylindrical accommodating cavity is provided in the middle of the roller body, the water cooling pipe is assembled in the accommodating cavity, the roller body is provided with a water inlet for water intake and a water outlet for water discharge, the accommodating cavity is connected to the water inlet and the water outlet respectively, and the water inlet is connected to the water inlet end of the water cooling pipe.

[0006] The idler roller body further includes a bearing, a roller shaft assembled with the bearing, and a roller cylinder assembled on the outer wall of the middle part of the roller shaft, the roller cylinder being used for heat conduction.

[0007] In the axial direction of the roller shaft, the distance L1 between the end of the roller near the water inlet and the water outlet of the water-cooling pipe is greater than or equal to the length L2 of the roller.

[0008] The outer wall of the water-cooling pipe is provided with several sets of water outlet holes, which fall on the downward projection surface of the roller.

[0009] The water outlet is provided in multiple sets, and in the radial direction of the water cooling pipe, the multiple sets of water outlets are arranged at equal angular intervals around the cross-section of the water cooling pipe.

[0010] In the axial direction of the water-cooling pipe, multiple sets of water outlet holes are arranged at equal intervals.

[0011] The ratio between the diameter of the water-cooling pipe and the diameter of the roller is 0.4:1 to 0.5:1.

[0012] The water-cooling pipe is assembled with the bearing, and the area of ​​a group of water outlet holes located above the axis of the roller is larger than the area of ​​any other water outlet hole.

[0013] The sidewall of the water outlet gradually expands from the inside to the outside along the radial direction of the water cooling pipe.

[0014] The water outlet of the water-cooling pipe is arranged to gradually expand from the inside to the outside along the axial direction of the roller shaft.

[0015] The beneficial effects of this utility model are as follows: by setting a water-cooling pipe in the accommodating cavity, and connecting the water outlet end of the water-cooling pipe with the water outlet, the water flows bidirectionally along the direction of water inlet end-water outlet end-water inlet end, reducing the temperature difference between the two ends caused by continuous heating along the way, making the cooling effect of the axial cooling range of the idler roller body more similar, thereby making the overall cooling of the steel material uniform and improving product quality.

[0016] By setting water outlet holes, an additional water outlet channel is provided for the water flow. In addition to the water flowing back from the outlet end of the water-cooling pipe to the outlet to cool the inner wall of the idler roller body, the water flowing out from the water outlet holes directly exchanges heat with the inner wall of the idler roller body, thereby improving the cooling effect.

[0017] By limiting the distance between the end of the roller closest to the water inlet and the water outlet of the water-cooling pipe, the effective cooling length of the water flow from the water outlet of the water-cooling pipe to the area corresponding to the roller on the inner wall of the idler roller body can be increased. On the other hand, it can prevent the water flow from the water outlet of the water-cooling pipe directly to the area corresponding to the roller on the inner wall of the idler roller body, which would cause the return water to overheat and affect the local cooling effect. This improves the overall cooling uniformity of the roller, reduces deformation caused by temperature differences, and makes the steel material conveying smoother. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a silicone cooling roller in the production of precision steel, as described in an embodiment of this application. Figure 2 This is a top view of a silicone cooling roller used in the production of precision steel, as described in an embodiment of this application. Figure 3 yes Figure 2 Cross-sectional view along the CC direction; Figure 4 yes Figure 2 Cross-sectional view along the DD direction; Figure 5 This is a schematic diagram of the structure of the water-cooled pipe in the embodiments of this application; Figure 6 yes Figure 5 A magnified view of a section at point A in the middle; Figure 7 yes Figure 3 A magnified view of a section at point B in the middle; Figure 8 This is a front view of a silicone cooling roller used in the production of precision steel, as described in an embodiment of this application. Figure 9 yes Figure 8 Cross-sectional view along the EE direction; Figure 10 yes Figure 9 A magnified view of a section at point F in the middle; Figure 11 This is a partial cross-section of the water-cooled pipe in the embodiments of this application. Figure 1 ; Figure 12 This is a partial cross-section of the water-cooled pipe in the embodiments of this application. Figure 2 .

[0019] Explanation of reference numerals in the attached drawings: 1. Water cooling pipe; 2. Receptacle; 3. Water inlet; 4. Water outlet; 5. Bearing; 6. Roller shaft; 7. Roller; 8. Water outlet hole; 9. Mounting component; 10. Screw hole. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so as to intuitively and vividly understand each technical feature and overall technical solution of the present utility model. However, they should not be construed as limiting the scope of protection of the present utility model.

[0021] In the description of this utility model, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. When a feature is referred to as "set," "fixed," or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0022] In the description of this utility model, the term "several" means one or more, and "multiple" means two or more. The terms "greater than," "less than," and "exceeding" should be understood as excluding the stated number. The terms "above," "below," and "within" should be understood as including the stated number. The terms "first" and "second" should be understood as distinguishing technical features and not as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0023] Furthermore, unless otherwise defined, the technical and scientific terms used in this invention have the same meanings as commonly understood by one of ordinary skill in the art. The terminology used in this invention is for the purpose of describing particular embodiments only and not for limiting the invention. It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0024] Example 1: As Figure 1-12As shown, a silicone cooling idler roller for precision steel production includes an idler roller body, which includes a water-cooling pipe 1. A cylindrical accommodating cavity 2 is provided in the middle of the idler roller body, and the water-cooling pipe 1 is assembled in the accommodating cavity 2. The idler roller body has a water inlet 3 for water inlet and a water outlet 4 for water outlet. The accommodating cavity 2 is connected to the water inlet 3 and the water outlet 4 respectively. The water inlet 3 is connected to the water inlet end of the water-cooling pipe 1. By setting the water-cooling pipe 1 in the accommodating cavity 2 and connecting the water outlet end of the water-cooling pipe 1 to the water outlet 4, the water flows bidirectionally in the direction of water inlet end-water outlet end-water inlet end, reducing the temperature difference at both ends caused by continuous heating along the way. This makes the cooling effect of the axial cooling range of the idler roller body more uniform, thereby making the overall cooling of the steel material more uniform and improving product quality.

[0025] The idler roller body also includes a bearing 5, a roller shaft 6 assembled with the bearing 5, and a roller 7 assembled on the outer wall of the middle part of the roller shaft 6. The roller 7 is used for heat conduction. By setting the assembly of the bearing 5 and the roller shaft 6, the rotation stability of the furnace roller is improved. The roller 7 can improve the heat conduction uniformity and high temperature resistance of the idler roller, so that the steel is heated evenly, and can also reduce the deformation of the roller body and extend its service life.

[0026] Preferably, the roller 7 can be made of silicone or isobaric graphite.

[0027] In the axial direction of the roller 6, the distance L1 between the end of the roller 7 near the water inlet 3 and the water outlet of the water cooling pipe 1 is greater than or equal to the length L2 of the roller 7. By limiting the distance between the end of the roller 7 near the water inlet 3 and the water outlet of the water cooling pipe 1, on the one hand, the effective cooling length of the water flow from the water outlet of the water cooling pipe 1 to the area corresponding to the roller 7 on the inner wall of the idler roller body can be increased. On the other hand, it can be avoided that the water flow from the water outlet of the water cooling pipe 1 flows directly to the area corresponding to the roller 7 on the inner wall of the idler roller body, which would cause the return water to overheat and affect the local cooling effect. This improves the overall cooling uniformity of the roller 7, reduces deformation caused by temperature differences, and makes the steel conveying smoother.

[0028] The outer wall of the water-cooling pipe 1 is provided with several sets of water outlet holes 8. The water outlet holes 8 fall on the downward projection surface of the roller 7. The water outlet holes 8 are set corresponding to the roller 7. By setting the water outlet holes 8, it is convenient to provide another water outlet channel for the water flow. In addition to the water flowing back from the outlet end of the water-cooling pipe to the outlet 4 to cool the inner wall of the idler roller body, the water flowing out from the water outlet holes 8 directly exchanges heat with the inner wall of the idler roller body, thereby improving the cooling effect.

[0029] The water outlet holes 8 are provided in multiple sets. In the radial direction of the water cooling pipe 1, the multiple sets of water outlet holes 8 are arranged at equal angles around the cross-section of the water cooling pipe 1. By setting multiple sets of water outlet holes 8 at equal angles along the radial direction of the water cooling pipe 1, the range of heat exchange between the water flow and the roller body is increased, and the cooling effect of the water flow on the roller 7 is further improved.

[0030] Preferably, the water outlet holes 8 are provided in four sets, and the angle formed by the axes of any two adjacent sets of water outlet holes 8 is 90°.

[0031] In the axial direction of the water-cooling pipe 1, multiple sets of water outlet holes 8 are arranged at equal intervals. By setting the water outlet holes 8 to be arranged at equal intervals along the axial direction of the water-cooling pipe 1, the range of heat exchange between the water flow and the idler roller body is increased, and the cooling effect of the water flow on the idler roller body is further improved.

[0032] The ratio between the diameter of the water-cooling pipe 1 and the diameter of the roller 6 is 0.4:1 to 0.5:1. By limiting the diameters of the water-cooling pipe 1 and the roller 6, the speed of the water flowing out from the outlet of the water-cooling pipe 1 is moderate under the same water inflow, making the heat exchange process of the roller body more uniform and improving the cooling efficiency.

[0033] See Figure 11 The sidewall of the water outlet 8 is arranged to gradually expand from the inside to the outside along the radial direction of the water cooling pipe 1. By setting the sidewall of the water outlet 8 to expand from the inside to the outside, the water jet coverage range is expanded, the contact area between the water flow and the inner wall of the idler roller body is increased, the heat exchange range is improved, and the cooling effect on the idler roller body is improved.

[0034] See Figure 12 The water outlet of the water-cooling pipe 1 is gradually expanded from the inside to the outside along the axial direction of the roller 6. By expanding the water outlet of the water-cooling pipe 1 from the inside to the outside along the axial direction, the water outlet range of the water-cooling pipe is increased, so that the water flow can be fully concentrated in the rear end area of ​​the roller 7 to complete the heat exchange. At the same time, it can also reduce the temperature of the water flow heat exchange in the end area, so that the water flowing to the outlet 4 can have sufficient heat exchange with the middle and front end of the roller 7 in sequence, thereby improving the cooling effect.

[0035] The system also includes two sets of mounting components 9. The mounting components 9 are mounted on the outer wall of the roller shaft 6 and are located at both ends of the roller 7. The mounting components 9 are used to fix the roller 7 and abut against the roller 7. The mounting components 9 are provided with screw holes 10 and are used for threaded assembly with the roller shaft 6. By setting two sets of mounting components 9 to fix the roller 7 at both ends, the roller 7 is stabilized in position under high temperature and high speed rotation environment, avoiding displacement or vibration, improving the flatness of steel material conveying, and also facilitating the disassembly and replacement of the roller 7.

[0036] It is worth mentioning that, see Figure 10 After the water flows in from the inlet 3, it flows to the water cooling pipe 1 and forms a split. Part of the water flows out through the outlet hole 8 and part of the water flows out through the outlet end of the water cooling pipe 1. The two water streams converge in the accommodating cavity 2 and finally flow out from the outlet 4 connected to the accommodating cavity 2.

[0037] The implementation principle of the silicone cooling roller in the precision steel production of this embodiment is as follows: Water flows through the water inlet 3 of the roller body and into the water cooling pipe 1 from the water inlet end. On the one hand, it is sprayed onto the inner wall of the roller body through multiple sets of water outlet holes 8 opened on the outer wall of the water cooling pipe 1 to complete heat exchange. On the other hand, it flows out from the water outlet end of the water cooling pipe 1, and starts to collect in the accommodating cavity 2 from the rear end of the roller 7. It completes the heat exchange on the inner wall of the roller body through the backflow and finally flows to the water outlet 4 for discharge. Meanwhile, the roller shaft 6 drives the roller 7 to rotate, carrying and continuously conveying the steel material. Through the synergistic effect of the heat conduction of the roller 7 and the cooling effect of the water circulation, the heating uniformity of the steel material during the conveying process is improved.

[0038] Example 2: Figure 1-12 As shown, this embodiment provides a silicone cooling roller for precision steel production. The difference between this embodiment and Embodiment 1 is that the water cooling pipe 1 is assembled with the roller shaft 6, and the water cooling pipe 1 does not rotate with the rotation of the roller shaft 6. The area of ​​the water outlet 8, which is perpendicular to the axis of the roller shaft 6 and located directly above the roller shaft 6, is larger than the area of ​​any other water outlet 8. By setting the water outlet 8 located directly above the roller shaft 6 to have a larger area, the heat exchange range of the core heat-conducting area of ​​the roller 7 is increased, which is adapted to the high-temperature heat dissipation requirements of this area and improves the cooling targeting and efficiency.

[0039] It is worth mentioning that the core heat-conducting area refers to the area located directly below roller 7 and directly above roller 6. This area is close to the steel material, has a higher temperature, and requires a larger heat exchange area.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications and substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A silicone cooling roller for precision steel production, characterized in that: The device includes an idler roller body and a water-cooling pipe. The idler roller body has a cylindrical cavity in the middle, and the water-cooling pipe is installed in the cavity. The idler roller body has a water inlet for water intake and a water outlet for water discharge. The cavity is connected to the water inlet and the water outlet respectively. The water inlet is connected to the water inlet end of the water-cooling pipe.

2. The silicone cooling roller for precision steel production according to claim 1, characterized in that: The idler roller body also includes a bearing, a roller shaft assembled with the bearing, and a roller cylinder assembled on the outer wall of the middle part of the roller shaft, the roller cylinder being used for heat conduction.

3. The silicone cooling roller for precision steel production according to claim 2, characterized in that: In the axial direction of the roller shaft, the distance L1 between the end of the roller near the water inlet and the water outlet of the water-cooling pipe is greater than or equal to the length L2 of the roller.

4. The silicone cooling roller for precision steel production according to claim 2, characterized in that: The outer wall of the water-cooling pipe is provided with several sets of water outlet holes, which fall on the downward projection surface of the roller.

5. A silicone cooling roller for precision steel production according to claim 4, characterized in that: The water outlet is provided in multiple sets, and in the radial direction of the water cooling pipe, the multiple sets of water outlets are arranged at equal angular intervals around the cross-section of the water cooling pipe.

6. A silicone cooling roller for precision steel production according to claim 5, characterized in that: In the axial direction of the water-cooling pipe, multiple sets of water outlet holes are arranged at equal intervals.

7. A silicone cooling roller for precision steel production according to claim 2, characterized in that: The ratio between the diameter of the water-cooling pipe and the diameter of the roller is 0.4:1 to 0.5:

1.

8. A silicone cooling roller for precision steel production according to claim 5, characterized in that: The water-cooling pipe is assembled with the bearing, and the area of ​​a group of water outlet holes located above the axis of the roller is larger than the area of ​​any other water outlet hole.

9. A silicone cooling roller for precision steel production according to claim 5, characterized in that: The sidewall of the water outlet gradually expands from the inside to the outside along the radial direction of the water cooling pipe.

10. A silicone cooling roller for precision steel production according to claim 2, characterized in that: The water outlet of the water-cooling pipe is arranged to gradually expand from the inside to the outside along the axial direction of the roller shaft.

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