Cooled bearing housing, external cooling system for pinch roll, and a pinch roll

Abstract

This utility model discloses a cooling bearing housing, comprising a base plate, an outer cover, an inner ring, two bases, and two sealing plates. The two bases, the lower base plate located between the two bases, and the upper outer cover are welded together to form the outer ring. The inner ring is located in the inner middle of the outer ring. Left and right sealing plates are welded between the left and right end faces of the outer cover and the inner ring, forming a closed annular chamber between the outer and inner rings. Each base has a through hole communicating with the annular chamber, serving as an inlet and an outlet, respectively. This cooling bearing housing fills the entire annular chamber of the bearing housing with cooling water, thereby cooling the bearing, preventing lubrication failure and seal aging, and ensuring the service life of the bearing.

Description

Technical Field

[0001] This utility model relates to components for cooling pinch rollers. Background Technology

[0002] Pinch rolls are crucial equipment in metallurgical rolling production lines, primarily used to guide, clamp, and convey strips, plates, or bars. In hot rolling lines, pinch rolls come into contact with high-temperature rolled products (reaching over 800°C). This high-temperature environment not only accelerates the oxidation of the roll surface and reduces its lifespan but also leads to lubrication failure in the bearing housing and accelerated seal aging, affecting the bearing's service life. Therefore, a well-designed cooling system to adequately cool the pinch roll's bearing housing and the roll itself is essential for extending its service life.

[0003] Chinese patent CN 112191695A discloses an internally cooled pinch roll body, which has the following disadvantages: First, it does not consider the impact of high-temperature environment on the bearing housing, i.e., it does not cool the bearing housing, thus shortening the bearing life; second, it does not cool the outer surface of the pinch roll body, resulting in poor cooling effect of the pinch roll itself; third, it requires water pipes to be installed on the outside of the roll, which is cumbersome in appearance. In short, its overall cooling effect on the roll is poor, and it cannot effectively extend the life of the pinch roll. Summary of the Invention

[0004] The problem this invention aims to solve is to provide a cooled bearing housing that fills the entire annular cavity of the bearing housing with cooling water, thereby cooling the bearing, preventing lubrication failure and seal aging, and ensuring the bearing's service life. Simultaneously, this invention also provides an external cooling system for the pinch roller, offering precise cooling and good performance. Furthermore, this invention provides a pinch roller that achieves comprehensive cooling of the bearing housing, the roller's exterior, and the roller's interior, extending its service life.

[0005] This utility model relates to a cooling bearing housing, which includes a base plate, an outer cover, an inner ring, two bases, and two sealing plates. The two bases, the lower base plate located between the two bases, and the upper outer cover are welded together to form the outer ring. The inner ring is located in the middle of the inner ring. The left and right end faces of the outer cover are welded to the inner ring with left and right sealing plates. The outer ring and the inner ring form a closed annular cavity. Both bases are provided with through holes communicating with the annular cavity, which are respectively the water inlet and the water outlet.

[0006] Furthermore, the cooling bearing housing also includes a partition, with a partition welded between the bottom of the inner ring and the outer ring to separate the bottom of the annular chamber.

[0007] The present invention relates to an external cooling system for a pinch roller, comprising a cooling bearing housing, a spray pipe, multiple spray heads, and pipe joints. The left and right ends of the spray pipe are connected to the water outlets of the left and right cooling bearing housings through pipe joints. Multiple spray heads are evenly arranged along the axial direction of the pinch roller, and the outlets of the spray heads face the outer surface of the pinch roller body.

[0008] Furthermore, the external cooling system also includes two mounting brackets, one end of which is fixedly connected to the end face of the cooling bearing housing 1, and the other end is fitted onto the nozzle and fixedly connected thereto.

[0009] Furthermore, the external cooling system also includes a fixing sleeve, which connects adjacent nozzles when the nozzle is multi-segmented.

[0010] This utility model discloses a pinch roller comprising an internally cooled roller body and an external cooling system. The internally cooled roller body includes a roller body, a roller shaft, two web plates, and three sections of water pipe. The roller shaft includes a drive-side shaft head and an operating-side shaft head. The roller body includes an inner cylinder, an outer cylinder, and a rotary joint. The two web plates are welded to the drive-side shaft head, the operating-side shaft head, the inner cylinder, and the outer cylinder as a whole, forming a cooling channel between the outer cylinder and the inner cylinder. The outer end of the operating-side shaft head is connected to the rotary joint, and the operating-side shaft head contains a right section of water pipe, with a gap between the outer wall of the water pipe and the through hole. The transmission side shaft head has a built-in left section water pipe with a gap between the outer wall of the water pipe and the blind hole; the two ends of the middle water pipe are welded to the left and right side plates and are connected to the water pipes at the left and right ends; both the transmission side shaft head and the operating side shaft head are provided with radial holes that are connected to the axial holes; the left and right inner plates are provided with several L-shaped holes, the vertical holes of which are connected to the radial holes of the shaft head and the horizontal holes of which are connected to the cooling channels; the transmission side shaft head and the operating side shaft head are respectively installed in the cooling bearing seats on both sides through bearings, and the external cooling system is located outside the pinch roller.

[0011] Furthermore, two plates are set at the left and right ends of the inner and outer cylinders, respectively, and the drive-side shaft head and the operating-side shaft head are set at the left and right ends of the two plates; the operating-side shaft head is provided with an axial through hole inside, and the water pipe of the right section is located in the axial through hole and the through hole of the rotary joint and is welded to the inner end face of the axial through hole; the drive-side shaft head is provided with an axial blind hole inside, and the water pipe of the left section is located in the axial blind hole and is welded to the inner end face of the inner hole.

[0012] Furthermore, the pinch roller also includes sealing rings, and sealing rings are provided on the contact end faces of the left and right side plates and the drive side shaft head, as well as on the contact end faces of the operation side shaft head.

[0013] The advantages of this utility model are: 1. The cooling bearing housing fills the entire annular cavity of the bearing housing with cooling water, thereby cooling the bearing, preventing lubrication failure and seal aging, and ensuring the service life of the bearing; 2. Cooling water cools the surface of the pinch roller through spray pipes and spray heads, extending the service life of the roller; at the same time, the external cooling system is fixed to the bearing housing and can swing with the roller, ensuring precise cooling position and good effect; 3. The internal cooling of the roller is achieved through the cooling channels inside the pinch roller; 4. There are no external water pipes for cooling, the structure is simple, and the appearance is neat.

[0014] In summary, this invention improves the cooling effect of the pinch roller and extends its service life by comprehensively cooling the bearing housing, the outside of the roller, and the inside of the roller. Attached Figure Description

[0015] Figure 1 This is an external view of the cooling bearing housing of this utility model.

[0016] Figure 2 It is along Figure 1 A cross-sectional view along line AA in the middle.

[0017] Figure 3 This is a subjective view of the cooling bearing housing of this utility model.

[0018] Figure 4 This is a schematic diagram of the pinch roller of this utility model.

[0019] Figure 5 This is a schematic diagram of the pinch roller body of this utility model. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] from Figure 1 , Figure 2 , Figure 3 As can be seen, the present invention is a cooling bearing housing, which includes a base plate 11, an outer cover 12, an inner ring 13, two bases 14, and left and right sealing plates 15. The two bases 14, the lower base plate 11 located between the two bases 14, and the upper outer cover 12 are welded together to form an outer ring. The inner ring 13 is located in the middle of the inner ring. The left and right end faces of the outer cover are welded to the inner ring with the left and right sealing plates 15. A closed annular cavity is formed between the outer ring and the inner ring. Both bases 14 are provided with through holes 141 that communicate with the annular cavity, which are respectively the water inlet and the water outlet.

[0023] This utility model relates to a cooling bearing housing: the bearing is installed inside the inner ring 14, with one through hole 141 serving as a water inlet and the other through hole 141 serving as a water outlet. The water inlet and the water outlet are connected by an annular chamber surrounding the bearing. In this way, cooling water enters from the water inlet, passes through the annular chamber, and flows out from the water outlet, thereby cooling the bearing housing, preventing lubrication failure and seal aging of the bearing housing, and thus ensuring the service life of the bearing.

[0024] Example 2

[0025] from Figure 1 , Figure 2 , Figure 3 It can be seen that the present invention is a cooling bearing housing: it also includes a partition plate 16, and the bottom of the inner ring 13 is welded to the outer ring, which separates the bottom of the annular chamber.

[0026] After the partition 16 separates the bottom of the annular chamber, the cooling water enters the annular chamber from the inlet and flows around the inner ring 13 of the bearing housing before reaching the outlet, so that the entire annular chamber of the bearing housing is filled with cooling water, thus having a better cooling effect and ensuring that the bearing is fully cooled.

[0027] Example 3

[0028] from Figure 4 It can be seen that the external cooling system of the pinch roller of this utility model includes two cooling bearing seats 1, a spray pipe 2, and multiple spray heads 3. The left and right ends of the spray pipe 2 are connected to the water outlets of the left and right cooling bearing seats 1 through pipe joints 4. Multiple spray heads 3 are evenly arranged along the axial direction of the pinch roller on the spray pipe 2, and the outlet of the spray head 3 faces the outer surface of the pinch roller body.

[0029] The left and right ends of the pinch roller are connected to two cooling bearing housings 1 via bearings. Cooling water enters the annular cavity inside the cooling bearing housing 1 through the outlet and flows into the spray pipe 2, then is sprayed out from the spray head 3 to cool the surface of the pinch roller, achieving simultaneous cooling of the bearing housing and the outer surface of the pinch roller body. Cooling the bearing housing extends the service life of the bearing, and cooling the outer surface of the pinch roller body extends the service life of the roller. Simultaneously, the external cooling system, fixed to the bearing housing, can swing with the roller, ensuring precise cooling positioning and good cooling effect.

[0030] Example 4

[0031] from Figure 4 It can be seen that the external cooling system of the pinch roller also includes two mounting brackets 5. One end of the mounting bracket 5 is fixedly connected to the end face of the cooling bearing seat 1, and the other end is sleeved on the nozzle 2 and fixedly connected to it.

[0032] Mounting bracket 5 can reinforce nozzle 2 to improve the strength of the entire external cooling system.

[0033] Example 5

[0034] from Figure 4 It can be seen that the external cooling system of the pinch roller also includes a fixed sleeve 6. When the nozzle 2 is multi-segmented, the fixed sleeve 6 connects the adjacent nozzles 2.

[0035] When the total length of the pinch roller is long, the nozzle 2 consists of at least two sections, with adjacent sections connected by a fixed sleeve 2, to increase the stability of the nozzle 2.

[0036] Example 6

[0037] from Figure 5 As can be seen, this utility model discloses a pinch roller, which includes an internally cooled roller body 7 and an external cooling system. The internally cooled roller body 7 includes a roller body, a roller shaft, two web plates 71, and three sections of water pipe 72. The roller shaft includes a drive-side shaft head 73 and an operating-side shaft head 74. The roller body includes an inner cylinder 75, an outer cylinder 76, and a rotary joint 78. The two web plates 71 are located at the left and right ends of the inner cylinder 75 and the outer cylinder 76, respectively. The drive-side shaft head 73 and the operating-side shaft head 74 are located at the left and right ends of the two web plates 71, respectively. The two web plates 71 are welded to the drive-side shaft head 73, the operating-side shaft head 74, the inner cylinder 75, and the outer cylinder 76 to form a whole, and a cooling channel is formed between the outer cylinder 76 and the inner cylinder 75. The outer end of the operating-side shaft head 74 is connected to the rotary joint 78, and the interior of the operating-side shaft head 74 is provided with an axial through hole. The right section of the water pipe 72 is located at... The water pipe 72 is welded to the inner end face of the axial through hole and the through hole of the rotary joint 78, and there is a gap between the outer wall of the water pipe 72 and the through hole; the internal part of the transmission side shaft head 73 is provided with an axial blind hole, the left section of the water pipe 72 is located in the axial blind hole and is welded to the inner end face of the inner hole, and there is a gap between the outer wall of the water pipe 72 and the blind hole; the two ends of the middle water pipe 72 are welded to the left and right side plates 71 and are connected to the water pipes 72 at the left and right ends; both the transmission side shaft head 73 and the operating side shaft head 74 are provided with radial holes that are connected to the axial hole; the left and right inner plates 71 are provided with several L-shaped holes, the vertical holes of which are connected to the radial holes of the shaft head, and the horizontal holes of which are connected to the cooling channel; the transmission side shaft head 73 and the operating side shaft head 74 are respectively installed in the cooling type bearing seats 1 on both sides through bearings, and the external cooling system is located outside the pinch roller.

[0038] To further improve the cooling effect of the pinch roll and extend its service life, the internal structure of the roll is cooled simultaneously with the external spray cooling. Cooling water enters through the inlet of the rotary joint 78, flows through three sections of water pipe 72 (left, middle, and right), exits through the gap between the axial blind hole of the drive-side shaft head 73 and the left section of water pipe 72, passes through the radial hole of the drive-side shaft head 73, the L-shaped through hole of the left end plate 71, the cooling channel, the L-shaped through hole of the right end plate, the radial through hole of the operating-side shaft 74, and the gap between the axial through hole of the operating-side shaft head 74 and the right section of water pipe 72, before exiting through the outlet of the rotary joint 78, thus completing the cooling of the roll's internal structure. Because the water pipes are located inside the roll, the appearance is simple and it is less affected by the environment.

[0039] During installation, the radial holes of the shaft head are aligned and connected with the radial holes of the spokes. Simultaneously, the joints of the roller, spokes, and shaft head are all welded together, ensuring a more reliable connection with commonly used seals.

[0040] Example 7

[0041] from Figure 5 It is understood that the present invention provides a pinch roller, which also includes a sealing ring 77. The left and right side plates 71 are provided with sealing rings 77 on the contact end surfaces of the transmission side shaft head 73 and the operation side shaft head 74.

[0042] Because there are gaps between the three sections of water pipe 72 (left, middle, and right), a small amount of cooling water will flow out from the gaps. However, the sealing ring 77 can prevent the cooling water from leaking between the shaft head and the spokes.

[0043] The advantages of this utility model are: 1. The cooling bearing housing fills the entire annular cavity of the bearing housing with cooling water, thereby cooling the bearing, preventing lubrication failure and seal aging, and ensuring the service life of the bearing; 2. Cooling water cools the surface of the pinch roller through spray pipes and spray heads, extending the service life of the roller; at the same time, the external cooling system is fixed to the bearing housing and can swing with the roller, ensuring precise cooling position and good effect; 3. The internal cooling of the roller is achieved through the cooling channels inside the pinch roller; 4. There are no external water pipes for cooling, the structure is simple, and the appearance is neat.

[0044] In summary, this invention improves the cooling effect of the pinch roller and extends its service life by comprehensively cooling the bearing housing, the outside of the roller, and the inside of the roller.

Claims

1. A cooling-type bearing housing, characterized by: It includes a base plate (11), an outer cover (12), an inner ring (13), two bases (14), and left and right sealing plates (15). The two bases (14), the lower base plate (11) located between the two bases (14), and the upper outer cover (12) are welded together to form an outer ring. The inner ring (13) is located in the middle of the inner ring. The left and right end faces of the outer cover are welded to the inner ring with left and right sealing plates (15). A closed annular cavity is formed between the outer ring and the inner ring. Both bases (14) are provided with through holes (141) that communicate with the annular cavity, which are the water inlet and the water outlet, respectively.

2. The cooled bearing seat of claim 1, wherein: It also includes a partition (16), which is welded between the bottom of the inner ring (13) and the outer ring to separate the bottom of the annular chamber.

3. An external cooling system for a pinch roll, characterized by: It includes a cooling bearing housing (1) as described in any one of claims 1-2, a spray pipe (2), multiple spray heads (3), and a pipe connector (4). The left and right ends of the spray pipe (2) are connected to the water outlets of the left and right cooling bearing housings (1) through the pipe connector (4). Multiple spray heads (3) are evenly arranged along the axial direction of the pinch roller on the spray pipe (2). The outlet of the spray head (3) faces the outer surface of the pinch roller body.

4. The external cooling system of claim 3, wherein: It also includes two mounting brackets (5), one end of which is fixedly connected to the end face of the cooling bearing housing (1), and the other end is fitted onto the nozzle (2) and fixedly connected thereto.

5. The external cooling system of claim 3, wherein: It also includes a retaining sleeve (6), which connects adjacent nozzles (2) when the nozzle (2) is multi-segmented.

6. A pinch roll characterized by: It includes an internally cooled roller body (7) and an external cooling system as described in any one of claims 3-5. The internally cooled roller body (7) includes a roller body, a roller shaft, two web plates (71), and three sections of water pipe (72). The roller shaft includes a drive-side shaft head (73) and an operating-side shaft head (74). The roller body includes an inner cylinder (75), an outer cylinder (76), and a rotary joint (78). The two web plates (71) are welded to the drive-side shaft head (73), the operating-side shaft head (74), the inner cylinder (75), and the outer cylinder (76) into a whole, and a cooling channel is formed between the outer cylinder (76) and the inner cylinder (75). The outer end of the operating-side shaft head (74) is connected to the rotary joint (78), and the right section of the water pipe (72) is built into the operating-side shaft head (74). The outer wall of the water pipe (72) and the through hole have a gap; the water pipe (72) of the inner left section of the transmission side shaft head (73) and the outer wall of the water pipe (72) and the blind hole have a gap; the two ends of the middle water pipe (72) are welded to the left and right side plates (71) and are connected to the water pipes (72) at the left and right ends; the transmission side shaft head (73) and the operation side shaft head (74) are both provided with radial holes that are connected to the axial holes; the left and right inner plates (71) are provided with several L-shaped holes, the vertical holes of which are connected to the radial holes of the shaft head and the horizontal holes of which are connected to the cooling channels; the transmission side shaft head (73) and the operation side shaft head (74) are respectively installed in the cooling bearing seats (1) on both sides through bearings, and the external cooling system is located outside the pinch roller.

7. A pinch roller according to claim 6, characterized in that: Two plates (71) are set at the left and right ends of the inner cylinder (75) and the outer cylinder (76), respectively. The transmission side shaft head (73) and the operation side shaft head (74) are set at the left and right ends of the two plates (71), respectively. An axial through hole is provided inside the operation side shaft head (74). The water pipe (72) of the right section is located inside the axial through hole and the through hole of the rotary joint (78) and is welded to the inner end face of the axial through hole. An axial blind hole is provided inside the transmission side shaft head (73). The water pipe (72) of the left section is located inside the axial blind hole and is welded to the inner end face of the inner hole.

8. A pinch roll as defined in claim 6 wherein: It also includes sealing rings (77), and sealing rings (77) are provided on the contact end surfaces of the left and right side plates (71) and the transmission side shaft head (73), and on the contact end surfaces of the operation side shaft head (74).

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