Cooling water device for finish rolling loop roller of hot rolled strip rolling mill
By installing a return water protective cover and an inclined drainage pipe structure on the looper roller, the problems of poor lubrication and uneven cooling caused by cooling water entering the bearing are solved, thus extending the bearing life and improving production efficiency.
Patent Information
- Application Number
- CN202423104159.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Cooling water from the rolling mill looper roll body can enter the bearing through the sealing gap, leading to poor lubrication. Furthermore, the location of the cooling water inlet device is prone to change, resulting in uneven cooling.
The system employs a return water protection cover and an inclined drainage pipe structure. The inlet pipe is fixed with flanges and bolts. Cooling water enters the roller through the inlet pipe and is discharged through the drainage pipe of the return water protection cover, preventing it from entering the bearing.
Preventing cooling water from entering the bearing extends bearing life, improves cooling uniformity, reduces maintenance difficulty and cost, and increases production efficiency.
Smart Images
Figure CN223587999U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the strip production field, concretely is hot rolled plate strip rolling mill finishing rolling loop roll cooling water device. BACKGROUND
[0002] In the strip rolling process, the strip temperature exceeds 1000 DEG C, and the strip and the loop roll surface are always in contact during the loop setting process, and only the loop roll has horizontal spray cooling water for cooling in the rolling gap. Therefore, in the hot rolling process, the surface temperature of the loop roll rises very quickly, and the loop roll must be cooled by the cooling water in the loop roll. The cooling water inlet pipe and the shield are welded together, and the shield and the loop roll bearing seat end cover are welded together. The front end of the inlet pipe is connected to the loop roll body by a flange joint, and then the water is discharged through the drainage hole of the shaft head and the gap between the inlet pipe and the shaft head to cool the loop roll body.
[0003] In the use process, the following problems exist:
[0004] 1. The loop roll body cooling water drainage is discharged through the multiple Φ8 drainage holes of the loop roll shaft head, and the gap between the inlet pipe and the shaft head.
[0005] 2. The loop roll cooling water inlet device is not fixed, and the position can change, causing uneven cooling of the loop roll body. UTILITY MODEL CONTENTS
[0006] The utility model solves the technical problems that the drainage through the shaft head of the roll end often enters the bearing interior through the sealing gap between the gland and the shaft sleeve, causing the bearing to burn due to poor water lubrication, and the loop roll cooling water inlet device is not fixed, and the position can change, causing uneven cooling of the loop roll body.
[0007] To solve the above problems, the technical scheme adopted by the utility model is as follows: the utility model is a hot rolled plate strip rolling mill finishing rolling loop roll cooling water device, which comprises a bearing seat, a shaft head and a roll body, the bearing seat is symmetrically provided with two groups, the shaft head is provided with two groups, the shaft head is clamped and installed on the bearing seat, the roll body is arranged between the two groups of shaft heads, a return water shield is welded on the end cover of one side of the bearing seat, a through hole is arranged on one side of the shaft head, an embedding groove is arranged in the roll body, and a water inlet pipe is combined on the return water shield through a flange and a bolt.
[0008] Further, a drainage pipe is communicated on the return water shield.
[0009] Further, the drain pipe is arranged at an inclined angle.
[0010] The utility model discloses the beneficial effects achieved by the above structure are as follows:
[0011] Compared with the prior art, the utility model has the beneficial effects that cooling water is prevented from entering the sleeve bearing to cause poor lubrication, and the service life of the bearing is prolonged. The service life of the sleeve bearing is less than 5 months on average, and the service life of the improved bearing is more than 1 year. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 The utility model discloses a whole structure schematic diagram of a hot-rolled plate strip rolling mill finishing sleeve bearing cooling water device.
[0013] Figure 2 The utility model discloses a hot-rolled plate strip rolling mill finishing sleeve bearing cooling water device Figure 1 An enlarged view of part A.
[0014] Among them, (1), bearing seat, (2), shaft head, (3), roll body, (4), backwater protection cover, (5), via hole, (6), embedded groove, (7), water inlet pipe, (8), drain pipe. DETAILED DESCRIPTION
[0015] As shown in the description accompanying drawings Figures 1-2 The utility model discloses a hot-rolled plate strip rolling mill finishing sleeve bearing cooling water device, including bearing seat (1), shaft head (2) and roll body (3), bearing seat (1) is provided with two groups symmetry, is provided with two groups of shaft head (2), and the shaft head (2) is clamped and installed on bearing seat (1), and the roll body (3) is located between two groups of shaft head (2), and the end cover of one side bearing seat (1) is welded with backwater protection cover (4), and one side shaft head (2) is equipped with via hole (5), and the roll body (3) is equipped with embedded groove (6) in, and backwater protection cover (4) is equipped with water inlet pipe (7) through flange and bolt, and cold water enters through water inlet pipe (7).
[0016] As shown in the description accompanying drawings Figure 2 Backwater protection cover (4) is equipped with drain pipe (8) in communication, as shown in the description accompanying drawings.
[0017] Specific use: one side bearing seat (1) gland design backwater protection cover (4), backwater protection cover (4) size and length according to the bearing seat (1) gland size and backwater flow to determine, backwater protection cover (4) on the appropriate position welding drain pipe (8). In the appropriate position of the cooling water inlet pipe (7) welding flange, the flange by bolt put together on the backwater protection cover (4), in order to the fixed and positioning of the inlet pipe (7). Inlet pipe (7) through the hole of the shaft head (2) into the sleeve roller roll body (3) inside, roll body (3) inside cooling water through the gap between the inlet pipe (7) and the shaft head (2) two into the backwater protection cover (4), and then through the backwater protection cover (4) on the drain pipe (8) into the predetermined drain ditch.
[0018] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.
Claims
1. A cooling water device for the finishing rolling looper rolls of a hot-rolled strip mill, characterized in that: The roller body includes a bearing housing (1), a shaft head (2), and a roller body (3). The bearing housing (1) is symmetrically arranged in two sets, and the shaft head (2) is arranged in two sets. The shaft head (2) is snapped onto the bearing housing (1). The roller body (3) is located between the two sets of shaft heads (2). A return water protection cover (4) is welded on the end cap of the bearing housing (1) on one side, and a through hole (5) is provided on the shaft head (2) on one side. An embedded groove (6) is provided in the roller body (3). A water inlet pipe (7) is connected to the return water protection cover (4) by a flange and bolts.
2. The cooling water device for the finishing rolling looper rolls of a hot-rolled strip mill according to claim 1, characterized in that: The return water protective cover (4) is connected to a drain pipe (8).
3. The cooling water device for the finishing rolling looper rolls of a hot-rolled strip mill according to claim 2, characterized in that: The drain pipe (8) is set at an inclined angle.