Cantilever roller of heating furnace
By setting a sandwich sleeve and core tube in the shaft head body of the heating furnace cantilever roller to form an appropriate cooling chamber, the problem of poor cooling effect of the cantilever roller in high-temperature environment is solved, significantly reducing the phenomenon of steel sticking and improving product quality.
Patent Information
- Application Number
- CN202420103556.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-16
AI Technical Summary
The existing heating furnace cantilever rollers have poor cooling effect in high-temperature environments, resulting in red thickness and redness in the shaft head wall, which is prone to steel sticking, affecting product quality.
A heating furnace cantilever roller is designed to form a cooling chamber with a suitable width by setting a sandwich sleeve in the shaft head body, increasing the volume of the cooling chamber, and dividing the cooling chamber into a water inlet chamber and a return chamber through the core tube and the partition. Ensure that the cooling water continues to enter and flow out, avoid gasification, and reduce shaft head rupture.
The improved cantilever roller cooling effect has been significantly improved, reducing the phenomenon of steel stickiness, improving product quality, and avoiding the problem of shaft head cracking.
Smart Images
Figure CN222143754U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heating furnaces, and in particular relates to a cantilever roller of a heating furnace. Background Art
[0002] In the metallurgical industry, a heating furnace is a device that heats metal workpieces to a red-hot state that allows them to be shaped. A conveyor roller table consisting of several cantilever rollers is used to convey metal workpieces in and out of the heating furnace, and the working end shaft head of the cantilever roller is connected to one end of the roller shaft.
[0003] The temperature of the soaking section of the heating furnace can reach 1200℃. The shaft head of the existing cantilever roller is provided with an inner hole, which is used as a cooling chamber. The shaft head is cooled by passing cold water into the cooling chamber. However, the shaft head wall is thick and the water cooling effect is poor, which causes the roller skin of the cantilever roller to turn red. When producing steel with higher viscosity, steel sticking is likely to occur, affecting product quality.
[0004] During the first improvement, the wall thickness of the shaft head was reduced and the inner hole of the shaft head was enlarged to increase the volume of the cooling chamber. However, as the amount of cooling water in the cooling chamber increased, the high temperature caused the cooling water to vaporize rapidly and could not be quickly discharged from the return water channel, greatly increasing the pressure in the cooling chamber and causing the shaft head to swell and crack. Utility Model Content
[0005] The purpose of the utility model is to provide a heating furnace cantilever roller to solve the problem that the heating furnace cantilever roller turns red due to heating, which leads to easy steel sticking. The technical solution adopted by the utility model is as follows:
[0006] A heating furnace cantilever roller comprises a shaft head body, a roller shaft and a rotary joint; the shaft head body is a cylindrical component with an opening at the right end, an interlayer sleeve is arranged in the shaft head body, a cooling chamber is formed between the outer periphery of the interlayer sleeve and the inner periphery of the shaft head body, a transparent inner hole is arranged in the roller shaft, the middle part of the roller shaft is respectively rotatably matched with a first bearing seat and a second bearing seat through a bearing, the right end of the roller shaft is connected to the rotary joint, the left end of the roller shaft is connected to the shaft head body, the water inlet of the rotary joint is connected to the right end of the core tube, the left end of the core tube passes through the inner hole of the roller shaft and extends Into the interlayer sleeve, a water inlet channel is formed in the core tube, a water return channel is formed between the core tube and the roller shaft, the inner periphery of the interlayer sleeve is connected to the outer periphery of the core tube through a partition, and the partition divides the interior of the interlayer sleeve into a water inlet chamber on the left and a water return chamber on the right. A plurality of water inlet holes are provided at the left end of the side wall of the interlayer sleeve, and a plurality of water outlet holes are provided at the right end of the side wall of the interlayer sleeve. The water inlet channel, the water inlet chamber, the plurality of water inlet holes, the cooling chamber, the plurality of water outlet holes, the water return chamber and the water return channel are connected in sequence, and the right end of the water return channel is connected to the water return port of the rotary joint.
[0007] Furthermore, a process hole is opened on the left end surface of the shaft head body, and the process hole is sealed by welding with a plug.
[0008] Furthermore, a material-blocking flange structure is provided at the right end of the outer periphery of the shaft head body.
[0009] Furthermore, a baffle ring is provided on the inner periphery of the shaft head body, a working gap is provided between the inner periphery of the baffle ring and the outer periphery of the interlayer sleeve, and the baffle ring is located between the plurality of water inlet holes and the plurality of water outlet holes.
[0010] Furthermore, the right opening of the shaft head body is matched with the left end stop of the roller shaft and welded and sealed, and the right end of the interlayer sleeve is abutted and connected with the left end surface of the roller shaft.
[0011] Furthermore, the inner wall of the shaft head body and the outer periphery of the roller shaft are matched through a flat key.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] The utility model performs thinning processing on the wall thickness of the shaft head body, increases the volume of the inner cavity of the shaft head body, and simultaneously arranges an interlayer sleeve on the shaft head body to form a cooling cavity with suitable width between the interlayer sleeve and the shaft head body. Since the volume of the cooling cavity is not increased compared with the shaft head inner hole of the existing heating furnace cantilever roller, cooling water in the cooling cavity can easily and continuously enter and flow out, which not only makes it easy for the cooling water to cool the shaft head with the thinned wall thickness, but also it is verified that the cooling water is not easy to produce violent gasification, and the shaft head body no longer has expansion and cracking phenomenon. After the new cantilever roller is modified in structure, the cooling effect is enhanced, and no reddening of the roller skin is found in the furnace, the steel sticking phenomenon of the cantilever roller is reduced, and the product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the cantilever roller of the existing heating furnace.
[0016] In the figure, 1. roller shaft, 11. return water channel, 2. rotary joint, 21. core tube, 3. first bearing seat, 4. second bearing seat, 5. shaft head body, 51. interlayer sleeve, 52. partition, 53. water inlet hole, 54. deflector ring, 55. water outlet hole, 56. plugging plate, 57. cooling chamber. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below by specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0018] The connection mentioned in the present utility model is divided into fixed connection and detachable connection. The fixed connection is a non-detachable connection, including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but is not limited to conventional detachable methods such as bolt connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can be found in the existing connection methods to achieve the function, and those skilled in the art can choose according to their needs. For example: choose welding connection for fixed connection and bolt connection for detachable connection.
[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.
[0020] Example: Figure 1-2 As shown, a cantilever roller of a heating furnace comprises a shaft head body 5, a roller shaft 1 and a rotary joint 2; the shaft head body 5 is a cylindrical component with an opening at the right end, an interlayer sleeve 51 is arranged inside the shaft head body 5, a cooling chamber 57 is formed between the outer periphery of the interlayer sleeve 51 and the inner periphery of the shaft head body 5, the roller shaft 1 is provided with a transparent inner hole, the middle part of the roller shaft 1 is rotatably matched with the first bearing seat 3 and the second bearing seat 4 respectively through bearings, the right end of the roller shaft 1 is connected to the rotary joint 2, the left end of the roller shaft 1 is connected to the shaft head body 5, the water inlet of the rotary joint 2 is connected to the right end of the core tube 21, the left end of the core tube 21 passes through the inner hole of the roller shaft 1 and extends to the interlayer sleeve 51, a water inlet channel is formed in the core tube 21, a water return channel 11 is formed between the core tube 21 and the roller shaft 1, the inner periphery of the interlayer sleeve 51 is connected to the outer periphery of the core tube 21 through a partition 52, and the partition 52 divides the interior of the interlayer sleeve 51 into a water inlet chamber on the left and a water return chamber on the right, a plurality of water inlet holes 53 are provided at the left end of the side wall of the interlayer sleeve 51, and a plurality of water outlet holes 55 are provided at the right end of the side wall of the interlayer sleeve 51, the water inlet channel, the water inlet chamber, the plurality of water inlet holes 53, the cooling chamber 57, the plurality of water outlet holes 55, the water return chamber and the water return channel 11 are connected in sequence, and the right end of the water return channel 11 is connected to the water return port of the rotary joint 2.
[0021] The utility model performs thinning processing on the wall thickness of the shaft head body 5, increases the volume of the inner cavity of the shaft head body 5, and simultaneously arranges an interlayer sleeve 51 on the shaft head body 5, so that a cooling cavity 57 of suitable width is formed between the interlayer sleeve 51 and the shaft head body 5. Since the volume of the cooling cavity 57 is not increased compared with the shaft head inner hole of the existing heating furnace cantilever roller, the cooling water in the cooling cavity 57 can easily and continuously enter and flow out, which not only makes it easy for the cooling water to cool the shaft head with the thinned wall thickness, but also it has been verified that the cooling water is not easy to produce violent gasification, and the shaft head body 5 no longer has the phenomenon of expansion and cracking. After the new cantilever roller is modified in structure, the cooling effect is enhanced, and no reddening of the roller skin is found in the furnace, which reduces the steel sticking phenomenon of the cantilever roller and improves the product quality.
[0022] A process hole is provided on the left end surface of the shaft head body 5, and the process hole is sealed by welding through a plugging piece 56. The process hole is used for welding and fixing the interlayer sleeve 51, the core tube 21 and the partition plate 52. After welding, the process hole is blocked, so that the utility model is easy to process and convenient for implementing the cooling water flow channel.
[0023] A material stop flange structure is provided at the right end of the outer periphery of the shaft head body 5. The material stop flange structure is used to limit the position of the heated metal workpiece.
[0024] A baffle ring 54 is provided on the inner periphery of the shaft head body 5 , a working gap is provided between the inner periphery of the baffle ring 54 and the outer periphery of the interlayer sleeve 51 , and the baffle ring 54 is located between the plurality of water inlet holes 53 and the plurality of water outlet holes 55 .
[0025] The right opening of the shaft head body 5 is matched with the left end stop of the roller shaft 1 and welded and sealed. The right end of the interlayer sleeve 51 is abutted and connected with the left end surface of the roller shaft 1.
[0026] The inner wall of the shaft head body 5 and the outer periphery of the roller shaft 1 are matched with each other through a flat key. The flat key is used to increase the rotation connection strength between the shaft head body 5 and the roller shaft 1.
[0027] The above embodiments are merely illustrative of the present invention and do not limit its protection scope. Those skilled in the art may also make partial changes thereto, which are within the protection scope of the present invention as long as they do not exceed the spirit of the present invention.
Claims
1. A cantilever roller for a heating furnace, characterized in that: The invention comprises a shaft head body (5), a roller shaft (1) and a rotary joint (2); the shaft head body (5) is a cylindrical component with an opening at the right end; an interlayer sleeve (51) is arranged inside the shaft head body (5); a cooling chamber (57) is formed between the outer periphery of the interlayer sleeve (51) and the inner periphery of the shaft head body (5); the roller shaft (1) is provided with a transparent inner hole; the middle part of the roller shaft (1) is rotatably matched with a first bearing seat (3) and a second bearing seat (4) respectively through bearings; the right end of the roller shaft (1) is connected to the rotary joint (2); the left end of the roller shaft (1) is connected to the shaft head body (5); the water inlet of the rotary joint (2) is connected to the right end of the core tube (21); the left end of the core tube (21) passes through the inner hole of the roller shaft (1) and extends into the interlayer sleeve (51). A water inlet channel is formed in the core tube (21), a water return channel (11) is formed between the core tube (21) and the roller shaft (1), the inner periphery of the interlayer sleeve (51) is connected to the outer periphery of the core tube (21) via a partition (52), the partition (52) divides the interior of the interlayer sleeve (51) into a water inlet chamber on the left and a water return chamber on the right, a plurality of water inlet holes (53) are provided at the left end of the side wall of the interlayer sleeve (51), and a plurality of water outlet holes (55) are provided at the right end of the side wall of the interlayer sleeve (51), the water inlet channel, the water inlet chamber, the plurality of water inlet holes (53), the cooling chamber (57), the plurality of water outlet holes (55), the water return chamber and the water return channel (11) are connected in sequence, and the right end of the water return channel (11) is connected to the water return port of the rotary joint (2).
2. The cantilever roller of a heating furnace according to claim 1, characterized in that: A process hole is provided on the left end surface of the shaft head body (5), and the process hole is sealed by welding with a plug (56).
3. The cantilever roller of a heating furnace according to claim 1, characterized in that: A material blocking flange structure is provided at the right end of the outer periphery of the shaft head body (5).
4. The cantilever roller for a heating furnace according to claim 1, characterized in that: A baffle ring (54) is provided on the inner periphery of the shaft head body (5), a working gap is provided between the inner periphery of the baffle ring (54) and the outer periphery of the interlayer sleeve (51), and the baffle ring (54) is located between a plurality of water inlet holes (53) and a plurality of water outlet holes (55).
5. A heating furnace cantilever roller according to any one of claims 1 to 4, characterized in that: The right opening of the shaft head body (5) is matched with the left end stop of the roller shaft (1) and welded and sealed, and the right end of the interlayer sleeve (51) is abutted and connected with the left end surface of the roller shaft (1).
6. A heating furnace cantilever roller according to claim 5, characterized in that: The inner wall of the shaft head body (5) and the outer periphery of the roller shaft (1) are matched via a flat key.