A hydraulic oil cooling system for the casting and rolling pressure roller used in casting and rolling

Abstract

The present invention relates to the technical field of sheet rolling equipment, and particularly relates to a hydraulic oil cooling system for a casting and rolling pressure roller for casting and rolling, which includes a first pressing plate and a second pressing plate. A heat exchange component is arranged between the first pressing plate and the second pressing plate. The heat exchange component includes a first annular partition plate. Second annular partition plates are respectively arranged on both sides of the first annular partition plate. The first annular partition plate is butt-jointed with the second annular partition plate on one side to form a coolant flow channel, and the first annular partition plate is butt-jointed with the second annular partition plate on the other side to form a hydraulic oil flow channel. Both the hydraulic oil flow channel and the coolant flow channel include N flow channels evenly distributed around the axis of the first annular partition plate, where N is an integer greater than 1. The shapes of the respective flow channels are the same, and each is respectively connected to a hydraulic oil circuit; adjacent two flow channels have an overlapping part in the circumferential direction of the first annular partition plate, and the respective flow channels are interconnected, so that the hydraulic oil temperatures in multiple hydraulic oil circuits are close, improving the rolling effect of the casting and rolling pressure roller.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet rolling equipment, and particularly to a hydraulic oil cooling system for a casting and rolling pressure roller used in casting and rolling. Background Art

[0002] The casting and rolling pressure roller, also known as the casting and rolling roll, is a key component in the casting and rolling mill, mainly used for continuously rolling the molten metal to produce strips or semi-finished products. The casting and rolling roll can be driven by multiple hydraulic cylinders. However, during the production process, due to the different positions of the hydraulic cylinders, the temperature of the hydraulic oil inside them is high and there are differences, resulting in a decrease in the viscosity of the hydraulic oil, causing pressure drift and fluctuation of the hydraulic oil pump, and further reducing the yield of the casting and rolling products.

[0003] In the prior art, a plate heat exchanger is usually used to cool the hydraulic oil of the hydraulic cylinder. However, since there are multiple hydraulic cylinders and the temperature of the hydraulic oil in each hydraulic cylinder is different, the existing plate heat exchanger will cause the temperature of the hydraulic oil of multiple hydraulic cylinders to be inconsistent after cooling, thus affecting the normal use of the casting and rolling roll. Summary of the Invention

[0004] Based on this, in view of the technical problem that the cooling temperatures of the hydraulic oil of multiple current hydraulic cylinders are inconsistent, it is necessary to provide a hydraulic oil cooling system for a casting and rolling pressure roller used in casting and rolling.

[0005] The above object is achieved by the following technical solutions:

[0006] A hydraulic oil cooling system for a casting and rolling pressure roller used in casting and rolling includes a first pressing plate and a second pressing plate. A heat exchange component is provided between the first pressing plate and the second pressing plate. The heat exchange component includes a first annular partition. Along the axial direction of the first annular partition, second annular partitions are respectively provided on both sides of the first annular partition. The first annular partition and the second annular partitions on both sides are symmetrically arranged. The first annular partition and the second annular partition on one side are butted to form a coolant flow channel, and the first annular partition and the second annular partition on the other side are butted to form a hydraulic oil flow channel. The coolant flow channel and the hydraulic oil flow channel have the same shape. The hydraulic oil flow channel is composed of N flow channels evenly distributed around the axis of the first annular partition, where N is an integer greater than 1. The shapes of the respective flow channels are the same, and each flow channel is respectively connected to a hydraulic oil circuit; adjacent two flow channels have an overlapping part in the circumferential direction of the first annular partition, and the flow channels are interconnected.

[0007] Further, there are three groups of the flow channels, and the projection angles of the respective flow channels on the first annular partition are all 240°.

[0008] Further, each flow channel includes M arc-shaped flow channels, where M is an integer greater than 2. The M arc-shaped flow channels are distributed along the radial direction of the first annular partition. Adjacent two arc-shaped flow channels are connected and the connection end is V-shaped.

[0009] Further, along the direction perpendicular to the first annular partition, the cross-sections of the first annular partition and the second annular partition are both wavy. The two sides of the first annular partition are respectively provided with a first U-shaped groove and a second U-shaped groove, and the two sides of the second annular partition are respectively provided with a third U-shaped groove and a fourth U-shaped groove. The notch of the first U-shaped groove is docked with the notch of the third U-shaped groove of one of the second annular partitions to form a coolant flow channel, and the notch of the second U-shaped groove is docked with the notch of the fourth U-shaped groove of the other second annular partition to form a hydraulic oil flow channel.

[0010] Further, a plurality of first communication ports are provided on the side wall of the second U-shaped groove, and a plurality of second communication ports are provided on the side wall of the fourth U-shaped groove. The first communication ports and the second communication ports correspond to form a plurality of communication channels, and the communication channels enable the hydraulic oil to flow between adjacent two flow channels. Each of the communication channels is arranged staggeredly along the radial direction of the first annular partition.

[0011] Further, three first semi-circular plates and three first docking plates are provided on the peripheral side of the first annular partition, and three second semi-circular plates and three second docking plates are provided on the peripheral side of the second annular partition. The first semi-circular plate is docked with the second semi-circular plate to form an inlet pipe of the hydraulic oil flow channel; the first docking plate is docked with the second docking plate to form an inlet pipe of the coolant flow channel. The inlet pipe and the inlet pipe are alternately arranged along the circumference of the first annular partition. The openings of the first semi-circular plate and the first docking plate face in opposite directions, and the openings of the second semi-circular plate and the second docking plate face in opposite directions.

[0012] Further, a plurality of coolant delivery pipes and hydraulic oil delivery pipes are fixedly arranged between the first pressing plate and the second pressing plate. The coolant delivery pipes are communicated with the inlet pipe, and the hydraulic oil delivery pipes are communicated with the inlet pipe. The openings of the hydraulic oil delivery pipes are located on the second pressing plate, and the openings of the coolant delivery pipes are located on the first pressing plate.

[0013] Further, the heat exchange assembly further includes a drain pipe. The drain pipe is located at the central position of the first annular partition and the second annular partition. The drain pipe includes a coolant outlet pipe and a hydraulic oil outlet pipe. Both the coolant outlet pipe and the hydraulic oil outlet pipe are semi-circular. A plurality of liquid outlet ports are provided on the coolant outlet pipe, and the liquid outlet ports are communicated with the coolant flow channel. A plurality of oil outlet ports are provided on the hydraulic oil outlet pipe, and the oil outlet ports are communicated with the hydraulic oil flow channel.

[0014] Further, the first pressing plate and the second pressing plate are fixedly connected by screws and bolts. A plurality of first wing plates are provided on the circumference of the first annular partition, and a plurality of second wing plates are provided on the circumference of the second annular partition. Connecting holes are provided on both the first wing plates and the second wing plates. The screw passes through the connecting holes to connect the first annular partition, the second annular partition with the first pressing plate and the second pressing plate.

[0015] Further, a plurality of the first annular partitions and the second annular partitions are provided.

[0016] The beneficial effects of the present invention are as follows:

[0017] The hydraulic oil cooling system for the casting and rolling pressure roller provided by the present invention, by setting coolant flow channels with the same shape, enables the coolant in the coolant flow channels to better cool the hydraulic oil in the hydraulic oil flow channels, thereby improving the hydraulic oil cooling effect. At the same time, since the flow channels communicate with each other, the hydraulic oil can be mixed, so that the hydraulic oil temperatures in multiple hydraulic oil circuits are close, improving the rolling effect of the casting and rolling pressure roller.

[0018] Secondly, the hydraulic oil and the cooling water flow along the respective arc-shaped flow channels. Since the connection ends are all V-shaped, the boundary layers of the coolant or the hydraulic oil are destroyed, causing the coolant or the hydraulic oil to generate turbulence, improving the heat transfer effect, and further improving the heat exchange effect of the hydraulic oil in each hydraulic circuit. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention;

[0020] Figure 2 is a cross-sectional structural schematic diagram of the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention;

[0021] Figure 3 is a structural schematic diagram of the drain pipe in the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention;

[0022] Figure 4 is a structural schematic diagram of the first annular partition in the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention;

[0023] Figure 5 is a structural schematic diagram of the first annular partition and the second annular partition in the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention;

[0024] Figure 6 is a cross-sectional view of the first annular partition and the second annular partition in the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention;

[0025] Figure 7 For Figure 6 The enlarged view of the structure at position A in

[0026] Figure 8 The front view of the second annular partition in the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention;

[0027] Figure 9 The schematic diagram of multiple flow channels in the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention;

[0028] Figure 10 The schematic diagram of a single flow channel in the hydraulic oil cooling system for the casting and rolling pressure roller provided by an embodiment of the present invention.

[0029] Wherein:

[0030] 100, coolant delivery pipe; 200, hydraulic oil delivery pipe; 501, first pressing plate; 502, second pressing plate; 510, screw; 520, bolt; 600, hydraulic oil outlet pipe; 610, liquid outlet; 700, coolant outlet pipe; 710, oil outlet; 800, first annular partition; 810, first semi-circular plate; 820, first docking plate; 830, first wing plate; 840, first flow-through opening; 850, first U-shaped groove; 860, second U-shaped groove; 900, second annular partition; 910, second semi-circular plate; 920, second docking plate; 930, second wing plate; 940, second flow-through opening; 950, third U-shaped groove; 960, fourth U-shaped groove; a, first arc-shaped flow channel; b, second arc-shaped flow channel; c, third arc-shaped flow channel; d, fourth arc-shaped flow channel; e, fifth arc-shaped flow channel; f, sixth arc-shaped flow channel. Detailed implementation manners

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0033] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] As Figures 1 to 10 shown, a hydraulic oil cooling system for a casting and rolling pressure roller used in casting and rolling provided by an embodiment of the present invention includes a first pressing plate 501 and a second pressing plate 502. A heat exchange component is provided between the first pressing plate 501 and the second pressing plate 502. The heat exchange component includes a first annular partition 800. Along the axial direction of the first annular partition 800, second annular partitions 900 are respectively provided on both sides of the first annular partition 800. The first annular partition 800 and the second annular partitions 900 on both sides are symmetrically arranged. The first annular partition 800 and the second annular partition 900 on one side are butted to form a coolant flow channel, and the first annular partition 800 and the second annular partition 900 on the other side are butted to form a hydraulic oil flow channel. The coolant flow channel and the hydraulic oil flow channel have the same shape. The hydraulic oil flow channel includes N flow channels evenly distributed around the axis of the first annular partition 800, where N is an integer greater than 1. The shapes of the respective flow channels are the same, and each is connected to a hydraulic oil circuit; there is an overlapping part between adjacent two flow channels in the circumferential direction of the first annular partition 800, and the respective flow channels communicate with each other. The flow channels can be provided in two groups, three groups, four groups, etc., and can be selected according to the number of hydraulic circuits of the hydraulic cylinders used by the casting and rolling rollers.

[0035] Preferably, there are three groups of the flow channels, and the projection angles of each flow channel on the first annular partition 800 are all 240 degrees. In this way, the projection angle of the overlapping part between two adjacent flow channels on the first annular partition 800 is 120 degrees, so that there is more overlapping part, which is convenient for the coolant and hydraulic oil inside the adjacent flow channels to flow to each other, improves the heat dissipation effect of the hydraulic oil, and makes the temperature of the hydraulic oil uniform everywhere.

[0036] In one embodiment, each flow channel includes M arc-shaped flow channels, where M is an integer greater than 2. The M arc-shaped flow channels are distributed along the radial direction of the first annular partition 800, and two adjacent arc-shaped flow channels are connected and the connection end is V-shaped. Preferably, the flow channels all include a first arc-shaped flow channel a, a second arc-shaped flow channel b, a third arc-shaped flow channel c, a fourth arc-shaped flow channel d, a fifth arc-shaped flow channel e, and a sixth arc-shaped flow channel f that are connected in sequence. The first arc-shaped flow channel a, the second arc-shaped flow channel b, the third arc-shaped flow channel c, the fourth arc-shaped flow channel d, the fifth arc-shaped flow channel e, and the sixth arc-shaped flow channel f are distributed along the radial direction of the first annular partition 800 and gradually approach the axis of the first annular partition 800. The arc lengths of the first arc-shaped flow channel a, the second arc-shaped flow channel b, the third arc-shaped flow channel c, the fourth arc-shaped flow channel d, the fifth arc-shaped flow channel e, and the sixth arc-shaped flow channel f gradually decrease.

[0037] The boundary layer refers to that when a fluid flows around an object of any shape at a large Reynolds number, a boundary layer will be formed near the object surface. In the present invention, the V-shaped connection end is provided so that when the coolant or hydraulic oil passes through the position of the connection end, the fluid at the center position of the flow channel and the fluid at the side wall position of the flow channel will flow to each other, thereby destroying the boundary layer of the fluid and improving the heat transfer effect.

[0038] In one embodiment, along the direction perpendicular to the first annular partition 800, the cross-sections of the first annular partition 800 and the second annular partition 900 are both wavy. The two sides of the first annular partition 800 are respectively provided with a first U-shaped groove 850 and a second U-shaped groove 860, and the two sides of the second annular partition 900 are respectively provided with a third U-shaped groove 950 and a fourth U-shaped groove 960. The notch of the first U-shaped groove 850 is docked with the notch of the third U-shaped groove 950 of one of the second annular partitions 900 to form a coolant flow channel, and the notch of the second U-shaped groove 860 is docked with the notch of the fourth U-shaped groove 960 of the other second annular partition 900 to form a hydraulic oil flow channel.

[0039] In one embodiment, a plurality of first flow ports 840 are provided on the side walls of the second U-shaped groove 860, and a plurality of second flow ports 940 are provided on the side walls of the fourth U-shaped groove 960. The first flow ports 840 and the second flow ports 940 correspondingly form a plurality of communication channels, and the communication channels enable hydraulic oil to flow between adjacent two flow channels. Each of the communication channels is arranged staggeredly along the radial direction of the first annular partition 800. Specifically, the communication channels formed by the first flow ports 840 and the second flow ports 940 correspond to the positions of the respective arc-shaped flow channels at the upstream. Since the hydraulic oil pressure at this position is high, it is convenient for the hydraulic oil to enter the adjacent flow channels, improving the flow efficiency of the hydraulic oil. At the same time, each of the communication channels is arranged staggeredly along the radial direction of the first annular partition 800, preventing the hydraulic oil from flowing only linearly along the radial direction of the first annular partition 800, extending the flow path of the hydraulic oil, and further improving the mixing effect of the hydraulic oil.

[0040] In other embodiments, a plurality of third flow ports are provided on the side walls of the first U-shaped groove 850, and a plurality of fourth flow ports are provided on the side walls of the third U-shaped groove 950. The third flow ports and the fourth flow ports enable the coolant to flow between adjacent two flow channels, keeping the temperature of the coolant consistent everywhere, and further improving the heat dissipation effect of the coolant on the hydraulic oil.

[0041] In one embodiment, three first semi-circular plates 810 and three first docking plates 820 are provided on the peripheral side of the first annular partition 800, and three second semi-circular plates 910 and three second docking plates 920 are provided on the peripheral side of the second annular partition 900. The first semi-circular plate 810 and the second semi-circular plate 910 are docked to form an oil inlet pipe of the hydraulic oil flow channel; the first docking plate 820 and the second docking plate 920 are docked to form a liquid inlet pipe of the coolant flow channel. The oil inlet pipe and the liquid inlet pipe are alternately arranged along the circumference of the first annular partition 800. The openings of the first semi-circular plate 810 and the first docking plate 820 face in opposite directions, and the openings of the second semi-circular plate 910 and the second docking plate 920 face in opposite directions.

[0042] In one embodiment, a plurality of coolant delivery pipes 100 and hydraulic oil delivery pipes 200 are fixedly provided between the first pressing plate 501 and the second pressing plate 502. The coolant delivery pipes 100 are communicated with the liquid inlet pipe, the hydraulic oil delivery pipes 200 are communicated with the oil inlet pipe, the openings of the hydraulic oil delivery pipes 200 are located on the second pressing plate 502, and the openings of the coolant delivery pipes 100 are located on the first pressing plate 501.

[0043] In one embodiment, the heat exchange assembly further includes a drain pipe located at the central position between the first annular partition 800 and the second annular partition 900. The drain pipe includes a coolant outlet pipe 700 and a hydraulic oil outlet pipe 600. Both the coolant outlet pipe 700 and the hydraulic oil outlet pipe 600 are semi-circular. The coolant outlet pipe 700 is provided with a plurality of liquid outlet openings 610 which communicate with the coolant flow channels. The hydraulic oil outlet pipe 600 is provided with a plurality of oil outlet openings 710 which communicate with the hydraulic oil flow channels.

[0044] In one embodiment, the first pressing plate 501 and the second pressing plate 502 are fixedly connected by screws 510 and bolts 520. The circumference of the first annular partition 800 is provided with a plurality of first wing plates 830, and the circumference of the second annular partition 900 is provided with a plurality of second wing plates 930. The first wing plates 830 and the second wing plates 930 are both provided with connection holes. The screws 510 pass through the connection holes to connect the first annular partition 800, the second annular partition 900 with the first pressing plate 501 and the second pressing plate 502.

[0045] In one embodiment, a plurality of the first annular partitions 800 and the second annular partitions 900 are provided. The specific quantity can be set according to the heat dissipation requirement.

[0046] Combined with the above embodiments, the working principle and process of the embodiments of the present invention are as follows:

[0047] During use, the first annular partition 800 and the second annular partition 900 are butted and fixed between the first pressing plate 501 and the second pressing plate 502. Then, the coolant outlet pipe 700 and the hydraulic oil outlet pipe 600 are located at the middle position between the first annular partition 800 and the second annular partition 900, and the oil outlet openings 710 of the hydraulic oil outlet pipe 600 are made to correspond to the hydraulic oil flow channels, and the liquid outlet openings 610 of the coolant outlet pipe 700 are made to correspond to the coolant flow channels. Each coolant delivery pipe 100 is made to correspond to the liquid inlet pipe formed by the first annular partition 800 and the second annular partition 900, and each hydraulic oil delivery pipe 200 is made to correspond to the oil inlet pipe formed by the first annular partition 800 and the second annular partition 900. Cooling water is introduced into each coolant delivery pipe 100, and each hydraulic oil delivery pipe 200 is connected to the hydraulic circuit of a hydraulic cylinder. Thus, while the hydraulic oil flows in each flow channel of the hydraulic oil flow channel, it enters the adjacent flow channels, realizing the mixing of the hydraulic oil. The cooling water flows in each flow channel of the coolant channel to cool the hydraulic oil in the hydraulic oil flow channel.

[0048] After use, introduce the cleaning liquid into the coolant outlet pipe 700 and the hydraulic oil outlet pipe 600 to clean the first annular partition 800 and the second annular partition 900. Due to the settings of the first flow port 840 and the second flow port 940, the cleaning liquid can flow and mix in each flow channel, thereby improving the cleaning effect on the heat exchange component.

[0049] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0050] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A hydraulic oil cooling system for a casting pressure roller for casting and rolling, characterized in that: It includes a first pressing plate and a second pressing plate, a heat exchange component is arranged between the first pressing plate and the second pressing plate, the heat exchange component includes a first annular baffle, along the axial direction of the first annular baffle, second annular baffles are respectively arranged on both sides of the first annular baffle, the first annular baffle and the second annular baffles on both sides are symmetrically arranged, the first annular baffle is connected with the second annular baffle on one side to form a coolant flow channel, the first annular baffle is connected with the second annular baffle on the other side to form a hydraulic oil flow channel, the coolant flow channel and the hydraulic oil flow channel have the same shape, the hydraulic oil flow channel includes three groups of bent flow channels evenly distributed around the axis of the first annular baffle, each bent flow channel has the same shape, and each is connected to a hydraulic oil circuit; two adjacent bent flow channels are arranged in the circumferential direction of the first annular baffle. There are overlapping parts, and the curved flow channels are interconnected, the projection angle of each curved flow channel on the first annular partition is 240°, and each curved flow channel includes a first arc flow channel a, a second arc flow channel b, a third arc flow channel c, a fourth arc flow channel d, a fifth arc flow channel e and a sixth arc flow channel f which are arranged in sequence, the first arc flow channel a, the second arc flow channel b, the third arc flow channel c, the fourth arc flow channel d, the fifth arc flow channel e and the sixth arc flow channel f are distributed along the radial direction of the first annular partition and gradually approach the axis of the first annular partition; the arc lengths of the first arc flow channel a, the second arc flow channel b, the third arc flow channel c, the fourth arc flow channel d, the fifth arc flow channel e and the sixth arc flow channel f gradually decrease, and two adjacent arc flow channels are connected and the connecting ends are V-shaped.

2. The hydraulic oil cooling system for casting and rolling pressure rollers according to claim 1, characterized in that: Along the direction perpendicular to the first annular baffle, the cross-sections of the first annular baffle and the second annular baffle are both wavy, the two side surfaces of the first annular baffle are respectively provided with a first U-shaped groove and a second U-shaped groove, the two side surfaces of the second annular baffle are respectively provided with a third U-shaped groove and a fourth U-shaped groove, the notch of the first U-shaped groove is connected with the notch of the third U-shaped groove of one of the second annular baffles to form a coolant flow channel, and the notch of the second U-shaped groove is connected with the notch of the fourth U-shaped groove of another second annular baffle to form a hydraulic oil flow channel.

3. The hydraulic oil cooling system for casting and rolling pressure rollers according to claim 2, characterized in that: The side wall of the second U-shaped groove is provided with multiple first flow openings, and the side wall of the fourth U-shaped groove is provided with multiple second flow openings. The first flow openings and the second flow openings correspond to form multiple connecting channels, and the connecting channels allow the hydraulic oil to flow mutually in two adjacent curved flow channels. The connecting channels are staggered along the radial direction of the first annular partition.

4. The hydraulic oil cooling system for casting and rolling pressure rollers according to claim 3, characterized in that: Three first semicircular plates and three first docking plates are provided on the circumferential side of the first annular baffle, and three second semicircular plates and three second docking plates are provided on the circumferential side of the second annular baffle. The first semicircular plates are docked with the second semicircular plates to form an oil inlet pipe of the hydraulic oil flow channel; the first docking plate is docked with the second docking plate to form a liquid inlet pipe of the coolant flow channel, and the oil inlet pipe and the liquid inlet pipe are alternately arranged along the circumference of the first annular baffle, and the opening of the first semicircular plate is opposite to the opening of the first docking plate, and the opening of the second semicircular plate is opposite to the opening of the second docking plate.

5. The hydraulic oil cooling system for casting and rolling pressure rollers according to claim 4, characterized in that: A plurality of coolant delivery pipes and hydraulic oil delivery pipes are fixedly arranged between the first pressing plate and the second pressing plate. The coolant delivery pipe is connected to the liquid inlet pipe, and the hydraulic oil delivery pipe is connected to the oil inlet pipe. The opening of the hydraulic oil delivery pipe is located on the second pressing plate, and the opening of the coolant delivery pipe is located on the first pressing plate.

6. The hydraulic oil cooling system for casting and rolling pressure rollers according to claim 1, characterized in that: The heat exchange component also includes a drain pipe, which is located at the center of the first annular baffle and the second annular baffle. The drain pipe includes a coolant outlet pipe and a hydraulic oil outlet pipe. The coolant outlet pipe and the hydraulic oil outlet pipe are both semicircular. The coolant outlet pipe is provided with a plurality of outlets, which are connected to the coolant flow channel. The hydraulic oil outlet pipe is provided with a plurality of outlets, which are connected to the hydraulic oil flow channel.

7. The hydraulic oil cooling system for casting and rolling pressure rollers according to claim 1, characterized in that: The first pressure plate and the second pressure plate are fixedly connected by screws and bolts, a plurality of first wing plates are provided on the circumference of the first annular partition, a plurality of second wing plates are provided on the circumference of the second annular partition, connecting holes are provided on the first wing plates and the second wing plates, and the screws pass through the connecting holes to connect the first annular partition, the second annular partition with the first pressure plate, and the second pressure plate.

8. The hydraulic oil cooling system for casting and rolling pressure rollers according to claim 1, characterized in that: A plurality of the first annular partition plates and a plurality of the second annular partition plates are provided.

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