A cooled roll

Abstract

This utility model relates to the field of water-cooled rolling mill rolls, specifically providing a cooling type rolling mill roll. The utility model includes a cooling rolling mill roll body, with a plurality of coolant rollers arranged on the upper inner side of the cooling rolling mill roll body. These coolant rollers abut against the cooling rolling mill roll body. Both ends of each coolant roller are provided with a longitudinal adjustment mechanism for moving its longitudinal position. This utility model provides a cooling type rolling mill roll that, through the coolant rollers and the longitudinal adjustment mechanism, first arranges a plurality of traditional water-cooled rollers on the upper outer side of the water-cooled rolling mill roll. These coolant rollers can be moved longitudinally by the longitudinal adjustment mechanism to adapt to the assembly of water-cooled rolling mill rolls of various diameters. Utilizing these redundantly arranged coolant rollers to exchange heat with the surface of the water-cooled rolling mill roll, the surface temperature of the water-cooled rolling mill roll is quickly controlled. Simultaneously, in conjunction with the heat conduction effect of the refrigerant on the inner side of the water-cooled rolling mill roll, this improves the effectiveness and speed of heat / cold treatment of the transported material.

Description

Technical Field

[0001] This utility model relates to the field of water-cooled rolling mill rolls, and more particularly to a cooling type rolling mill roll. Background Technology

[0002] Water-cooled rolls are key components in steel rolling equipment. The temperature of the rolls is controlled by a circulating cooling water system to prevent overheating that could lead to wear, deformation, or damage, thus ensuring rolling stability and product quality. The working principle is that cooling water flows through the cooling channels inside the rolls, absorbs heat, and is then discharged in a circulation. Structural features include an optimized cooling channel design, good sealing performance, and the use of high-strength, wear-resistant, and thermally conductive materials.

[0003] The inventors of this application have discovered the following problems during practical use:

[0004] In traditional applications, water-cooled rolls can effectively regulate the temperature of transported materials, improving product processing quality. However, a problem exists in actual use: traditional water-cooled rolls exchange heat with transported materials, and the temperature of the roll surface is controlled solely by the internal refrigerant. In production, relying solely on the refrigerant for temperature control makes it difficult to quickly regulate the roll surface temperature, reducing the processing efficiency of the transported materials. Therefore, the inventors urgently need to design a roll structure that enhances the surface temperature control capability of water-cooled rolls to improve production efficiency.

[0005] Therefore, it is necessary to provide a cooled roll to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a cooling type roll that addresses the issues of slow temperature control response and insufficient heat exchange efficiency in traditional water-cooled rolls.

[0007] To achieve the above objectives, the technical solution of this utility model is: a cooling roll, comprising a cooling roll body, wherein a plurality of cooling liquid rolls are arranged on the upper inner side of the cooling roll body, the plurality of cooling liquid rolls abut against the cooling roll body, and both ends of the cooling liquid rolls are provided with a longitudinal adjustment mechanism for moving the longitudinal position of the cooling liquid rolls.

[0008] By adopting the above technical solution, several cooling liquid rollers are set on the upper inner side of the cooling roll body. A composite heat exchange interface is formed through a redundant cooling system. The cooling liquid rollers directly contact the roll body, which significantly shortens the heat conduction path, improves the surface temperature response speed, and effectively solves the problem of lag in temperature control of traditional water-cooled rolls.

[0009] Furthermore, the longitudinal adjustment mechanism includes a mounting frame, which is fixedly connected to an external frame, and a sliding groove is provided on the inner side of the mounting frame.

[0010] By adopting the above technical solution, the longitudinal adjustment mechanism adopts a modular setting with the mounting frame and the frame fixedly connected, which enhances the overall structural stability and avoids adjustment failure caused by vibration or impact. The opening of the slide provides a precise guide track for the coolant roller, ensuring the control of the straightness error of the movement trajectory during the adjustment process.

[0011] In a further configuration, both ends of the coolant roller are rotatably connected to the mounting frame via bearing seats, and the bearing seats are engaged and slidably installed with the slide groove.

[0012] By adopting the above technical solutions, high-precision roller bearings are used to ensure rotational flexibility, maintaining smooth rotation even under high rolling pressure. The engagement and sliding installation of the bearing housing and the slide groove, through the double-row slide groove arrangement, reduces the friction coefficient during the adjustment process and extends the equipment life.

[0013] In a further configuration, an adjusting screw is rotatably mounted above the bearing housing, the adjusting screw is threadedly connected to the mounting frame, and a handwheel is provided at the top of the adjusting screw.

[0014] By adopting the above technical solution, the user-friendly design of the handwheel supports tool-free and rapid adjustment, allowing operators to complete the roller spacing adjustment in a short time, significantly improving changeover efficiency.

[0015] In a further configuration, the cooling roll body includes a mandrel, a support sleeve is sleeved on the outside of the mandrel, liquid delivery chambers are formed at both ends of the support sleeve, and an intermediate cavity is formed in the middle of the support sleeve.

[0016] By adopting the above technical solution, a three-layer nested structure of mandrel-support sleeve-outer sleeve is used to form a compact heat conduction system. The partitioning of the liquid delivery chambers at both ends and the middle cavity inside the support sleeve effectively reduces the overall mass of the roll and its production cost.

[0017] Furthermore, each end of the mandrel is provided with an infusion channel at its central axis, and the infusion channel is connected to the infusion chamber through a through hole.

[0018] By adopting the above technical solution, the cooling medium is introduced from the outside into the inside of the infusion channel through the rotary joint, and then introduced into the inside of the infusion chamber through the through hole.

[0019] Further, the inner side of the intermediate cavity is supported by an inner liner sleeve, and several spiral conveying plates are arranged in a ring on the outer side of the support sleeve. A conveying groove is formed between adjacent spiral conveying plates, and the infusion chamber is connected to the conveying groove through a through hole.

[0020] By adopting the above technical solution, a turbulent flow channel is formed by multiple spiral flow plates arranged in a ring, so that the cooling medium flows in a spiral manner. This flow mode significantly increases the residence time of the cooling medium in the support sleeve, prolongs the heat exchange path, and thus improves the overall heat exchange efficiency.

[0021] In a further configuration, an outer sleeve is fitted onto the outer side of the support sleeve, and the two ends of the outer sleeve and the support sleeve are welded and sealed.

[0022] By adopting the above technical solution, the gap between the outer sleeve and the support sleeve is welded and sealed using laser deep penetration welding technology to ensure that the pressure bearing capacity is leak-free. Vacuum annealing is performed before welding to eliminate residual welding stress and avoid the risk of cracking.

[0023] Compared with related technologies, the cooling roll provided by this utility model has the following beneficial effects:

[0024] This invention provides a cooling roll. Using a cooling liquid roller and a longitudinal adjustment mechanism, several sets of traditional water-cooled rollers are first installed on the upper outer side of the water-cooled roll. The installation positions of these cooling liquid rollers should not conflict with the working area of ​​the water-cooled roll, and these cooling liquid rollers can be moved longitudinally through the longitudinal adjustment mechanism to adapt to the assembly of water-cooled rolls of various diameters. By utilizing the contact between the cooling liquid rollers and the surface of the water-cooled roll, heat exchange is achieved between these redundantly arranged cooling liquid rollers and the surface of the water-cooled roll, rapidly controlling the surface temperature of the water-cooled roll. Simultaneously, the heat conduction effect of the refrigerant on the inner side of the water-cooled roll is utilized, thereby improving the effective and rapid heat / cold treatment operation of the transported material and solving the technical drawback of the ineffective heat exchange on the upper outer surface of traditional water-cooled rolls. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a side view of the structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the arrangement structure of the spiral conveyor plate of this utility model;

[0028] Figure 4 This is a schematic diagram of the internal cooling medium flow path structure of this utility model.

[0029] The following are the labeling elements in the diagram: 1. Cooling roll body; 101. Mandrel; 102. Support sleeve; 103. Inner liner sleeve; 104. Spiral conveyor plate; 105. Outer sleeve; 106. Liquid delivery channel; 107. Liquid delivery chamber; 108. Intermediate cavity; 2. Cooling liquid roll; 3. Longitudinal adjustment mechanism; 301. Mounting frame; 302. Slide groove; 303. Bearing seat; 304. Adjusting screw. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate typical embodiments of this utility model.

[0031] Example 1:

[0032] like Figure 1-4 As shown, this utility model discloses a cooling roll, including a cooling roll body 1. Several cooling liquid rollers 2 are arranged on the upper inner side of the cooling roll body 1, and these rollers abut against the cooling roll body 1. Both ends of each cooling liquid roller 2 are equipped with a longitudinal adjustment mechanism 3 for moving the roller 2 longitudinally. The arrangement of several cooling liquid rollers 2 on the upper inner side of the cooling roll body 1 forms a composite heat exchange interface through a redundant cooling system. The direct contact between the cooling liquid rollers 2 and the roll body significantly shortens the heat conduction path, improves the surface temperature response speed, and effectively solves the problem of lag in temperature control of traditional water-cooled rolls. Simultaneously, the longitudinal adjustment mechanism 3 supports the longitudinal movement of the cooling liquid rollers 2, adapting to the assembly requirements of rolls with different diameters, ensuring optimal heat exchange efficiency in production lines of different specifications, and significantly improving equipment versatility and processing flexibility.

[0033] like Figure 1 , Figure 2 As shown, the longitudinal adjustment mechanism 3 includes a mounting frame 301, which is fixedly connected to the external frame. A groove 302 is provided on the inner side of the mounting frame 301. The longitudinal adjustment mechanism 3 adopts a modular design with the mounting frame 301 fixedly connected to the frame, which enhances the overall structural stability and avoids adjustment failure caused by vibration or impact. The groove 302 provides a precise guide track for the coolant roller 2, ensuring the straightness error control of the movement trajectory during adjustment. At the same time, it facilitates the synchronous adjustment of multiple roller groups. Different specifications of coolant roller 2 can be quickly replaced through standardized installation interfaces, reducing maintenance costs, shortening production line changeover time, and improving production efficiency.

[0034] like Figure 1 , Figure 2As shown, the two ends of the coolant roller 2 are rotatably connected to the mounting frame 301 via bearing seats 303. The bearing seats 303 are engaged and slidably installed with the slide grooves 302. High-precision roller bearings are used to ensure rotational flexibility, so that smooth rotation can be maintained even under high rolling pressure. The engagement and sliding installation of the bearing seats 303 and the slide grooves 302, through the setting of double rows of slide grooves 302, reduces the friction coefficient during the adjustment process and extends the service life of the equipment. At the same time, it supports the coolant roller 2 to apply a constant preload in the axial direction, ensuring effective contact with the roller surface under all working conditions.

[0035] like Figure 1 , Figure 2 As shown, an adjusting screw 304 is rotatably mounted on the top of the bearing housing 303. The adjusting screw 304 is threadedly connected to the mounting frame 301. A handwheel is provided at the top of the adjusting screw 304. The user-friendly design of the handwheel supports tool-free quick adjustment, allowing operators to complete the roller spacing adjustment in a short time, significantly improving changeover efficiency. At the same time, the screw drive has a self-locking function, which can withstand large axial loads without displacement, ensuring the stability of the adjusted position and avoiding accidental deviation during the production process.

[0036] like Figure 1 , Figure 2 , Figure 4 As shown, the cooling roll body 1 includes a mandrel 101, a support sleeve 102 is sleeved on the outside of the mandrel 101, liquid delivery chambers 107 are formed at both ends of the support sleeve 102, and a central cavity 108 is formed in the middle of the support sleeve 102. The three-layer nested structure of mandrel 101-support sleeve 102-outer sleeve 105 forms a compact heat conduction system. The partitioning of the liquid delivery chambers 107 at both ends and the central cavity 108 inside the support sleeve 102 effectively reduces the overall mass of the roll and its production cost. At the same time, controlling the flow rate of the cooling medium ensures efficient cooling and avoids processing defects caused by surface overcooling, thereby improving process stability.

[0037] like Figure 4 As shown, a liquid delivery channel 106 is provided at the center axis of both ends of the mandrel 101. The liquid delivery channel 106 is connected to the liquid delivery chamber 107 through a through hole. The cooling medium is input from the outside into the liquid delivery channel 106 through the rotary joint, and then input into the inside of the liquid delivery chamber 107 through the through hole. This completes the input of the cooling medium, ensuring the smooth flow of the cooling medium and realizing the efficiency of heat exchange.

[0038] Example 2:

[0039] like Figure 4As shown, the inner side of the central cavity 108 is supported by an inner liner sleeve 103. Several spiral conveying plates 104 are arranged in a ring on the outer side of the support sleeve 102. A conveying groove is formed between adjacent spiral conveying plates 104. The liquid conveying chamber 107 is connected to the conveying groove through a through hole. The multiple spiral conveying plates 104 arranged in a ring form a turbulent conveying groove, which makes the cooling medium flow in a spiral manner. This flow mode significantly increases the residence time of the cooling medium in the support sleeve 102, prolongs the heat exchange path, and thus improves the overall heat exchange efficiency. The centrifugal force generated by the spiral flow helps to force the cooling medium to be transported to the other end, avoiding the dead angle problem that may exist in traditional straight flow, ensuring that the cooling medium can uniformly cover the entire roll surface and eliminate local overheating.

[0040] like Figure 1 As shown, an outer sleeve 105 is fitted on the outer side of the support sleeve 102. The two ends of the outer sleeve 105 and the support sleeve 102 are fitted with a gap weld seal. The gap weld seal between the outer sleeve 105 and the support sleeve 102 adopts laser deep penetration welding process to ensure pressure resistance without leakage. Vacuum annealing treatment is performed before welding to eliminate residual welding stress and avoid cracking risk. At the same time, this sealing structure supports the quick replacement of the outer sleeve 105. It adopts expansion sleeve connection. When the surface wear reaches a certain level, maintenance can be completed in a short time, significantly shortening downtime and improving equipment utilization.

[0041] In practice, the cooling roll body 1 adopts a three-layer nested cooling structure. The liquid delivery channel 106 inside the mandrel 101 delivers the cooling medium to the liquid delivery chamber 107 at one end of the support sleeve 102. Then, multiple spiral conveying plates 104 arranged in a ring form a turbulent conveying channel, which makes the cooling medium flow in a spiral manner and forces the cooling medium to be transported to the other end, fully disturbing the boundary layer and enhancing convective heat transfer. The outer sleeve 105 is sealed and welded to the support sleeve 102 to form a closed cavity to ensure heat transfer efficiency.

[0042] Above the outer side of the roll, several coolant rollers 2 are installed in the groove 302 of the longitudinal adjustment mechanism 3 via bearing seats 303. The operator turns the handwheel to drive the adjusting screw 304 to push the bearing seat 303 to move longitudinally along the groove 302, so that the surface of the coolant roller 2 maintains an appropriate degree of contact with the outer sleeve 105 of the cooling roll body 1. This redundant cooling system increases the external heat exchange interface and forms a compound cooling effect with the internal spiral flow channel: on the one hand, it uses the direct heat conduction of the coolant roller 2 to quickly absorb / release heat, and on the other hand, it relies on the refrigerant circulation of the mandrel 101 to achieve deep temperature balance, while solving the technical drawback of the failure of the outer surface of the traditional water-cooled roll to achieve effective heat exchange.

[0043] The advantages of this technical solution in practical applications include, but are not limited to, the following:

[0044] 1. By utilizing the redundant cooling liquid rollers to exchange heat with the surface of the water-cooled rolls, and in conjunction with the heat conduction effect of the refrigerant inside the water-cooled rolls, the effective and rapid heat / cold treatment of the transported items is improved, thus solving the technical drawback that the outer upper surface of the traditional water-cooled rolls cannot achieve effective heat exchange.

[0045] 2. Several coolant rollers are installed in the slide groove of the longitudinal adjustment mechanism through bearing seats, so as to adjust the longitudinal position of the coolant rollers to adapt to the assembly operation of cooling rollers of various diameter specifications and improve their installation adaptability.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooled roll characterized by: It includes a cooling roll body (1), and several cooling liquid rolls (2) are arranged on the upper inner side of the cooling roll body (1). The several cooling liquid rolls (2) abut against the cooling roll body (1). Both ends of the cooling liquid rolls (2) are provided with longitudinal adjustment mechanisms (3) for moving the longitudinal position of the cooling liquid rolls (2).

2. A cooled roll according to claim 1, characterized in that The longitudinal adjustment mechanism (3) includes a mounting frame (301), which is fixedly connected to an external frame, and a sliding groove (302) is provided on the inner side of the mounting frame (301).

3. A cooled roll according to claim 2, wherein The two ends of the coolant roller (2) are rotatably connected to the mounting frame (301) through bearing seats (303), and the bearing seats (303) are engaged and slidably installed with the slide groove (302).

4. A cooled roll according to claim 3, wherein An adjusting screw (304) is rotatably mounted above the bearing housing (303). The adjusting screw (304) is threadedly connected to the mounting frame (301), and a handwheel is provided at the top of the adjusting screw (304).

5. A cooled roll as claimed in claim 1, wherein The cooling roll body (1) includes a mandrel (101), a support sleeve (102) is sleeved on the outside of the mandrel (101), liquid delivery chambers (107) are formed at both ends of the support sleeve (102), and an intermediate cavity (108) is formed in the middle of the support sleeve (102).

6. A cooled roll according to claim 5, wherein Both ends of the mandrel (101) are provided with infusion channels (106) at the centerline of each end, and the infusion channels (106) are connected to the infusion chamber (107) through through holes.

7. A cooled roll according to claim 5, wherein The inner side of the intermediate cavity (108) is supported by an inner liner sleeve (103), and a number of spiral conveying plates (104) are arranged in a ring on the outer side of the support sleeve (102). A conveying groove is formed between adjacent spiral conveying plates (104), and the infusion chamber (107) is connected to the conveying groove through a through hole.

8. A cooled roll according to claim 5, wherein An outer sleeve (105) is fitted on the outside of the support sleeve (102), and the two ends of the outer sleeve (105) and the support sleeve (102) are welded and sealed.

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