Cantilever roller device of full water cooling and heating furnace

Abstract

The utility model relates to the technical field of cantilever roller ways, and discloses a full water cooling and heating furnace cantilever roller device which comprises a roller shaft, a roller head is fixedly installed at the end of the roller shaft, a water return bin is rotatably installed at the end, away from the roller head, of the roller shaft, a water inlet pipe is fixedly installed on the inner wall of the roller shaft, and a water outlet pipe is fixedly installed on the water inlet pipe. A water return heat exchange assembly is arranged in the roller head and comprises a center cavity, arc-shaped blocks, fan-shaped inclined grooves, a water return cavity, a spiral belt, a backflow hole and a backflow cavity. According to the cantilever roller device for the full-water-cooling-heating furnace, the water return heat exchange assembly is arranged, cooling water entering the water return cavity preheats cold cooling water entering the center cavity subsequently while cooling and heat exchange are conducted on the outer side of the roller head, and the temperature difference of the cooling water when the surface of the roller head is cooled is reduced; and the situation that the service life of the roller head is affected due to cracking and damage of the surface of the roller head caused by overhigh temperature difference is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cantilever roller conveyor technology, specifically a cantilever roller device for a fully water-cooled hot furnace. Background Technology

[0002] Cantilever roller conveyors are important equipment used to transport steel billets into and out of the furnace. They must bear the weight of the steel billets and complete the transport in a high-temperature environment.

[0003] According to a public announcement of a cantilever roller conveyor for a fully water-cooled hot furnace (Announcement No.: CN212806561U), in the above application, the roller head is fitted onto the end of the roller shaft, and the bolt on the second protruding ring passes through the arc groove. Then, the roller head is rotated to make the threaded ring groove engage and lock with the fixed sleeve. Then, the nut is fitted onto the end of the bolt. By rotating the nut, the fixed sleeve and the second protruding ring can be detachably connected, which facilitates the replacement of the roller head, reduces maintenance costs, and improves production efficiency.

[0004] However, in actual use, although the roller head can be disassembled and installed, a certain gap will be generated between its interior and the roller shaft. The existence of this gap will make it difficult for the water-cooling components in the internal cavity of the roller shaft to achieve a good cooling effect on the roller head, thus affecting the service life of the roller head to a certain extent. In view of this, we propose a fully water-cooled hot furnace cantilever roller device. Utility Model Content

[0005] The purpose of this invention is to provide a cantilever roller device for a fully water-cooled hot furnace to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cantilever roller device for a fully water-cooled hot furnace, comprising a roller shaft, a roller head fixedly installed at the end of the roller shaft, a return water chamber rotatably installed at the end of the roller shaft away from the roller head, a water inlet pipe fixedly installed on the inner wall of the roller shaft, and a return water heat exchange component disposed inside the roller head;

[0007] The return water heat exchange assembly includes a central cavity located on the inner wall of the center of the roller head. An arc-shaped block is fixedly installed on the inner wall of the central cavity at the end away from the roller shaft. A fan-shaped inclined groove is formed on the arc-shaped inner wall of the central cavity near the arc-shaped block. A return water cavity is formed on the inner wall of the roller head. A spiral band is fixedly installed on the inner surface of the return water cavity. A reflux hole is formed on the inner wall of the central cavity at the end away from the arc-shaped block. A reflux cavity is formed on the inner wall of the roller shaft.

[0008] Preferably, a return water groove with a size matching the end of the roller shaft is provided on the outer wall of the return water chamber near the roller shaft, so that the cooling water flowing back from the roller shaft can enter the return water chamber.

[0009] Preferably, the water inlet pipe is connected to the interior of the central cavity, so that water from the external circulation system can enter the central cavity through the water inlet pipe.

[0010] Preferably, the arc-shaped block is arranged in an arc shape with a low center and high ends, and the inclination of the fan-shaped inclined groove is adapted to the curvature of the arc-shaped block, so that the cooling water entering the central cavity can contact the outer surface of the arc-shaped block when it reaches the end, and be guided by the arc-shaped block to enter the return water cavity through the fan-shaped inclined groove.

[0011] Preferably, the central cavity is provided with a flow-disrupting component, which includes a spherical cavity. The spherical cavity is formed on the inner surface of the central cavity, and a flow-disrupting ball is provided inside the spherical cavity. The spherical surface of the flow-disrupting ball is provided with a groove.

[0012] Preferably, the outer diameter of the turbulence ball is smaller than the inner diameter of the spherical cavity to avoid the turbulence ball completely blocking the spherical cavity.

[0013] Preferably, the number of grooves is set to several, and the several grooves are evenly distributed on the spherical surface of the turbulence ball.

[0014] Compared with the prior art, this utility model provides a cantilever roller device for a fully water-cooled hot furnace, which has the following beneficial effects:

[0015] 1. The cantilever roller device of the fully water-cooled furnace is equipped with a return water heat exchange component. The cooling water entering the return water chamber not only cools and exchanges heat on the outside of the roller head, but also preheats with the cooler cooling water entering the central chamber. This reduces the temperature difference when the cooling water cools the surface of the roller head, and avoids excessive temperature difference that may cause cracking and damage to the surface of the roller head, thus affecting the service life of the roller head.

[0016] 2. This cantilever roller device for a fully water-cooled furnace, by incorporating a turbulence-dispersing component, uses turbulence balls and grooves to disperse the cooling water at the center of the central cavity towards the edge of the inner surface of the central cavity. This results in a more uniform temperature of the cooling water in the central cavity during heat exchange with the cooling water in the return water cavity, thereby reducing the temperature difference in local areas during heat exchange. This ensures that the heat exchange and cooling process does not damage the structure of the roller head itself, thus improving the service life of the roller head. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a partial cross-sectional view of the roller head of this utility model.

[0020] In the diagram: 1. Roller shaft; 2. Roller head; 3. Return water chamber; 4. Inlet pipe; 5. Return water heat exchange assembly; 51. Central cavity; 52. Arc-shaped block; 53. Fan-shaped inclined groove; 54. Return water chamber; 55. Spiral belt; 56. Return flow hole; 57. Return flow chamber; 6. Turbulence assembly; 61. Spherical cavity; 62. Turbulence ball; 63. Groove. Detailed Implementation

[0021] like Figures 1-3 As shown, this utility model provides a technical solution: a cantilever roller device for a fully water-cooled furnace, including a roller shaft 1, a roller head 2 fixedly installed at the end of the roller shaft 1, a return water chamber 3 rotatably installed at the end of the roller shaft 1 away from the roller head 2, a water inlet pipe 4 fixedly installed on the inner wall of the roller shaft 1, and a return water heat exchange component 5 arranged inside the roller head 2. The return water heat exchange component 5 includes a central cavity 51, an arc-shaped block 52, a fan-shaped inclined groove 53, a return water chamber 54, a spiral belt 55, a return flow hole 56, and a return flow chamber 57.

[0022] In one embodiment of this utility model, a central cavity 51 is formed on the inner wall at the center of the roller head 2. An arc-shaped block 52 is fixedly installed on the inner wall of the central cavity 51 away from the roller shaft 1. A fan-shaped inclined groove 53 is formed on the arc-shaped inner wall of the central cavity 51 near the arc-shaped block 52. A return water cavity 54 is formed on the inner wall of the roller head 2. A spiral belt 55 is fixedly installed on the inner surface of the return water cavity 54. A return hole 56 is formed on the inner wall of the central cavity 51 away from the arc-shaped block 52. A return water cavity 57 is formed on the inner wall of the roller shaft 1.

[0023] Furthermore, a return water groove adapted to the size of the end of the roller shaft 1 is opened on the outer wall of the return water chamber 3 near the roller shaft 1, which facilitates the cooling water flowing back from the roller shaft 1 into the return water chamber 3. The water inlet pipe 4 is located in the center of the return water chamber 3, which can also ensure the stability of the connection between the end of the water inlet pipe 4 and the external water inlet structure. Specifically, the water inlet pipe 4 is connected to the interior of the central cavity 51, so that water from the external circulation system can enter the central cavity 51 through the water inlet pipe 4, thereby exchanging heat with the roller head 2 to reduce its temperature and prevent it from being too hot and affecting the normal conveying of the steel billet.

[0024] Meanwhile, the arc-shaped block 52 is arranged in an arc shape with a low center and high ends, and the inclination of the fan-shaped inclined groove 53 is adapted to the curvature of the arc-shaped block 52. This allows the cooling water entering the central cavity 51 to contact the outer surface of the arc-shaped block 52 when it reaches the end, and be guided by the arc-shaped block 52 to enter the return water cavity 54 through the fan-shaped inclined groove 53. Furthermore, the spiral band 55 divides the return water cavity 54 into a spiral-shaped internal cavity, thereby allowing the cooling water to travel a longer distance when flowing in the area divided by the spiral band 55, so as to better contact the outer side of the roller head 2. Heat exchange is performed, and the return water chamber 54 is located between the central cavity 51 and the outer surface of the roller head 2. When cooling and exchanging heat on the outside of the roller head 2, it can also preheat with the cooler cooling water that subsequently enters the central cavity 51, reducing the temperature difference when the cooling water cools the surface of the roller head 2. This avoids excessive temperature difference causing cracking and damage to the surface of the roller head 2, which would affect the service life of the roller head 2. Finally, the cooling water enters the return cavity 57 through the return hole 56, and then enters the return water chamber 3 through the through hole at the end of the roller shaft 1, so as to enter the external cooling water circulation equipment for circulating cooling.

[0025] In addition, a turbulence assembly 6 is provided inside the central cavity 51. The turbulence assembly 6 includes a spherical cavity 61, which is opened on the inner surface of the central cavity 51. A turbulence ball 62 is provided inside the spherical cavity 61, and a groove 63 is opened on the spherical surface of the turbulence ball 62.

[0026] In this embodiment of the invention, multiple sets of turbulence-dispersing components 6 are arranged in a linear array inside the central cavity 51. The outer diameter of the turbulence-dispersing ball 62 is smaller than the inner diameter of the spherical cavity 61 to prevent the turbulence-dispersing ball 62 from completely blocking the spherical cavity 61. At the same time, a number of grooves 63 are provided, which are evenly distributed on the spherical surface of the turbulence-dispersing ball 62. When the cooling water enters the central cavity 51 and flows toward the side of the arc block 52, the arrangement of the turbulence-dispersing ball 62 and the grooves 63 allows the cooling water at the center of the central cavity 51 to be dispersed to the edge of the inner surface of the central cavity 51. This makes the temperature of the cooling water in the central cavity 51 more uniform when it exchanges heat with the cooling water in the return water cavity 54, thereby reducing the temperature difference in local areas of the cooling water during the heat exchange process, ensuring that the heat exchange and cooling process will not damage the structure of the roller head 2 itself, and improving the service life of the roller head 2.

[0027] In this invention, during use, the roller head 2 is installed inside the hot furnace, and the outer side of the roller shaft 1 is fitted with a bearing for transmission and a transmission wheel. The roller shaft 1 is driven to rotate by an external drive device. The cooperation of several roller shafts 1 and roller heads 2 realizes the transfer of steel billets inside the hot furnace. In conjunction with an external cooling water circulation system, cooling water is pumped in through the water inlet pipe 4. The cooling water entering the central cavity 51 impacts the arc-shaped block 52 and is guided by the arc-shaped outer surface of the arc-shaped block 52 and the fan-shaped inclined groove 53 into the return water cavity 54. In the process, the cooling water in the return water chamber 54 cools and exchanges heat on the outside of the roller head 2, while also preheating the cooler cooling water that subsequently enters the central chamber 51. This reduces the temperature difference when the cooling water cools the surface of the roller head 2, preventing excessive temperature difference from causing cracks and damage to the surface of the roller head 2, which would affect the service life of the roller head 2. Finally, the cooling water enters the return water chamber 57 through the return hole 56, and then enters the return water tank 3 through the through hole at the end of the roller shaft 1, so as to enter the external cooling water circulation equipment for circulating cooling.

[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A cantilever roller device for a fully water-cooled furnace, comprising a roller shaft (1), a roller head (2) fixedly mounted at one end of the roller shaft (1), a return water chamber (3) rotatably mounted at the end of the roller shaft (1) away from the roller head (2), and a water inlet pipe (4) fixedly mounted on the inner wall of the roller shaft (1), characterized in that: The roller head (2) is equipped with a return water heat exchange component (5). The return water heat exchange component (5) includes a central cavity (51), which is located on the inner wall of the center of the roller head (2). An arc-shaped block (52) is fixedly installed on the inner wall of the central cavity (51) away from the roller shaft (1). A fan-shaped inclined groove (53) is provided on the arc-shaped inner wall of the central cavity (51) near the arc-shaped block (52). A return water cavity (54) is provided on the inner wall of the roller head (2). A spiral belt (55) is fixedly installed on the inner surface of the return water cavity (54). A return hole (56) is provided on the inner wall of the central cavity (51) away from the arc-shaped block (52). A return cavity (57) is provided on the inner wall of the roller shaft (1).

2. A full water cooled hot stove cantilever roller assembly as claimed in claim 1, wherein: The return water chamber (3) has a return water groove on the outer wall of one end near the roller (1) that is adapted to the size of the end of the roller (1).

3. A full water cooled hot stove cantilever roller assembly as claimed in claim 1, wherein: The water inlet pipe (4) is connected to the interior of the central cavity (51).

4. A full water cooled hot stove cantilever roller assembly as claimed in claim 1, wherein: The arc-shaped block (52) is arranged in an arc shape with a low center and high ends, and the inclination of the fan-shaped inclined groove (53) is adapted to the curvature of the arc-shaped block (52).

5. A full water cooled hot stove cantilever roller assembly as claimed in claim 1, wherein: The central cavity (51) is provided with a turbulence component (6), which includes a spherical cavity (61) on the inner surface of the central cavity (51). The spherical cavity (61) is provided with a turbulence ball (62) inside the spherical cavity (61), and a groove (63) is provided on the spherical surface of the turbulence ball (62).

6. A full water cooled hot stove cantilever roller assembly as claimed in claim 5 wherein: The outer diameter of the turbulence ball (62) is smaller than the inner diameter of the spherical cavity (61).

7. A full water cooled hot stove cantilever roller assembly as claimed in claim 5 wherein: The number of grooves (63) is set to several, and the several grooves (63) are evenly distributed on the spherical surface of the turbulence ball (62).

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