Back-up roll water retaining device for strip mill

Abstract

The utility model provides a back-up roll water retaining device for a strip mill, which comprises an upper back-up roll, an upper working roll, a lower working roll and a lower back-up roll, and further comprises a water retaining plate arranged above the upper back-up roll. Notches are formed in the left side and the right side of the water baffle so that other components can penetrate through the notches. And two water retaining support plates which are symmetrical left and right are arranged below the water retaining plate and surround the surface of the upper supporting roller. According to the supporting roller water retaining device for the strip steel rolling mill, cooling water splashed from the upper supporting roller is prevented from being splashed to other parts above the upper supporting roller by arranging the water retaining plate, the influence of splashing of the cooling water is reduced or relieved, the normal production schedule is guaranteed, and the service life of the rolling mill is prolonged; and the cooling water rebounded by the water baffle finally reaches the surface of the upper supporting roller, so that the cooling effect is improved, and the temperature of the upper supporting roller is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling, in particular to a support roller water retaining device for a strip steel rolling mill. Background Art

[0002] The process of changing the shape of steel ingots and billets between rotating rollers is called steel rolling. The steel rolling process is completed by a rolling mill. Figure 1 The figure shows a schematic diagram of the structure of a common strip steel rolling mill. The strip steel rolling mill 100 includes an upper support roll 11, an upper working roll 12, a lower working roll 22 and a lower support roll 21 arranged in a vertical direction. The strip steel is input between the upper working roll 12 and the lower working roll 22 for rolling. The upper support roll 11 provides support force for the upper working roll 12 to help positioning. The lower support roll 21 provides support force for the lower working roll 22 to help positioning. The upper support roll 11 and the lower support roll 21 obtain positioning force in the vertical direction through their respective servo hydraulic cylinder modules.

[0003] Since the upper working roll 12 and the lower working roll 22 need to exert force and work on the rolled strip, the temperature of the upper working roll 12 and the lower working roll 22 rises quickly, and the upper support roll 11 and the lower working roll 21 also heat up. Excessive temperature will cause deformation or fatigue of each roll, which will not only affect the production progress, but also the service life of the equipment. Therefore, cooling water spray is generally added. Figure 2 As shown, a plurality of cooling water nozzles 3 are respectively arranged on the left and right sides of the upper support roll 11, the upper working roll 12, the lower working roll 22 and the lower support roll 21, for spraying cooling water on each roll to cool it down.

[0004] However, the splashing of cooling water can also affect other parts of the rolling mill. For example, the cooling water sprayed onto the upper support roller 11 is likely to splash onto the part above the upper support roller 11 (e.g., the servo hydraulic cylinder module of the upper support roller 11), which not only affects the normal production progress (e.g., increases the frequency of maintenance and replacement), but also affects the service life of the rolling mill (e.g., accelerates corrosion), and requires the cleaning of sewage.

[0005] The utility model attempts to provide a support roller water retaining device for a strip steel rolling mill, so as to avoid or alleviate the influence of splashing cooling water on other parts of the rolling mill. Utility Model Content

[0006] The utility model attempts to provide a support roller water retaining device for a strip steel rolling mill, so as to avoid or alleviate the influence of splashing cooling water on other parts of the rolling mill.

[0007] The utility model provides a support roller water retaining device for a strip steel rolling mill, comprising an upper support roller, an upper working roller, a lower working roller and a lower support roller. The support roller water retaining device for the strip steel rolling mill also comprises: a water retaining plate, which is arranged above the upper support roller.

[0008] Furthermore, gaps are provided on the left and right sides of the water baffle plate to allow other components to pass through.

[0009] Furthermore, two left-right symmetrical water retaining support plates are arranged below the water retaining plate, and the water retaining support plates surround the surface of the upper support roller.

[0010] Furthermore, the water retaining support plate extends obliquely along a straight line.

[0011] Furthermore, the water retaining support plate is bent, and the water retaining support plate is bent toward the upper supporting roller.

[0012] Furthermore, the water baffle is arranged below the lower supporting roller.

[0013] The support roller water retaining device for a strip rolling mill of the utility model embodiment prevents the cooling water splashed on the upper support roller from splashing to other parts above the upper support roller by arranging a water retaining plate, thereby reducing or alleviating the influence of the splashing of cooling water, ensuring the normal production progress and extending the service life of the rolling mill; and the cooling water rebounded by the water retaining plate eventually reaches the surface of the upper support roller, thereby improving the cooling effect and reducing the temperature of the upper support roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a schematic structural diagram of an existing strip rolling mill.

[0015] Figure 2 Shown is a further structural schematic diagram of an existing strip rolling mill.

[0016] Figure 3 Shown is a schematic structural diagram of a support roller water retaining device according to an embodiment of the utility model.

[0017] Figure 4 Shown Figure 3 A schematic top view of the first water retaining plate in the illustrated embodiment.

[0018] Figure 5 Shown is a structural schematic diagram of a support roller water retaining device according to another embodiment of the utility model.

[0019] Figure 6 Shown is a structural schematic diagram of a support roller water retaining device according to another embodiment of the utility model.

[0020] Reference numerals:

[0021] 100: Strip rolling mill;

[0022] 11: upper support roll; 12: upper working roll; 21: lower support roll; 22: lower working roll; 3: cooling water nozzle;

[0023] 4: water retaining plate; 41: notch; 42: water retaining support plate. DETAILED DESCRIPTION

[0024] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0025] Figure 3 The figure shows a schematic diagram of the structure of a support roller water retaining device according to an embodiment of the utility model. Figure 3 As shown, a water baffle 4 is provided above the upper support roller 11, so that cooling water is sprayed at the cooling water nozzle 3 to prevent the cooling water splashed from the upper support roller 11 from splashing onto the part located above the upper support roller 11 (such as the servo hydraulic module of the upper support roller 11).

[0026] Figure 4 Shown Figure 3 A schematic top view of the first water baffle in the illustrated embodiment. Notches 41 are provided on the left and right sides of the water baffle 4 to allow some parts connected to the upper support roller 11 to pass through.

[0027] Figure 5 The figure shows a structural schematic diagram of a support roller water retaining device according to another embodiment of the utility model. Figure 3 On the basis of the illustrated embodiment, two left-right symmetrical and obliquely extending water retaining support plates 42 are arranged below the water retaining plate 4. The water retaining support plates 42 can better surround the surface of the upper support roller 11 to prevent the splashing cooling water from affecting the surrounding components.

[0028] Figure 6 The figure shows a schematic structural diagram of a support roller water retaining device according to another embodiment of the utility model. Figure 6 In the illustrated embodiment, the water retaining support plate 42 is configured to extend in a curved manner and bend toward the upper support roller 11 , thereby better surrounding the surface of the upper support roller 11 and preventing the splashing cooling water from affecting surrounding components.

[0029] Similarly, a water baffle can also be provided for the lower support roller 21. Since the cooling water sprayed to the lower support roller 21 is generally sprayed upward, the cooling water then flows down along the surface of the lower support roller 21 under the action of gravity, and generally does not affect the components located below the lower support roller 21.

[0030] The support roller water retaining device for a strip rolling mill of the utility model embodiment prevents the cooling water splashed on the upper support roller from splashing to other parts above the upper support roller by arranging a water retaining plate, thereby reducing or alleviating the influence of the splashing of cooling water, ensuring the normal production progress and extending the service life of the rolling mill; and the cooling water rebounded by the water retaining plate eventually reaches the surface of the upper support roller, thereby improving the cooling effect and reducing the temperature of the upper support roller.

[0031] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A support roll water retaining device for a strip mill, comprising an upper support roll, an upper working roll, a lower working roll and a lower support roll, characterized in that: The support roll water retaining device for a strip steel rolling mill further comprises: A water baffle is arranged above the upper supporting roller.

2. The support roll water retaining device for a strip mill according to claim 1, characterized in that: Notches are arranged on the left and right sides of the water baffle.

3. The support roll water retaining device for a strip mill according to claim 1, characterized in that: Two left-right symmetrical water retaining support plates are arranged below the water retaining plate, and the water retaining support plates surround the surface of the upper support roller.

4. The support roll water retaining device for a strip mill according to claim 3, characterized in that: The water retaining support plate extends obliquely along a straight line.

5. The support roll water retaining device for a strip mill according to claim 3, characterized in that: The water retaining support plate is bent, and the water retaining support plate is bent toward the upper supporting roller.

6. The support roll water retaining device for a strip rolling mill according to claim 1, characterized in that: The water baffle is arranged below the lower supporting roller.

Images