Roller calendering mechanism and calender

Abstract

The roller calendering mechanism comprises a fixing frame, a first rotating seat, a second rotating seat, a first roller, a second roller and an adjusting device, the first rotating seat and the second rotating seat are movably arranged on the fixing frame, the first roller is rotationally connected with the first rotating seat, the second roller is rotationally connected with the second rotating seat, and the adjusting device is arranged on the first rotating seat. The adjusting device comprises a first adjuster, the first adjuster is movably connected with the first rotating base and the second rotating base at least in the first direction, and the first adjuster is suitable for adjusting the connection degree with the first rotating base and / or the second rotating base so that the first roller and the second roller can get close to each other or get away from each other. The device has the advantages of being compact in structure and convenient and stable to operate, and two sets of rollers can serve as a unit to be subjected to linkage adjustment so as to control the gap between the rollers.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of calendering equipment, in particular to a roller calendering mechanism and a calender. BACKGROUND

[0002] The calender is used for pressure forming of silica gel after mixing, and is used for pressing rubber, graphite sheet, wave-absorbing material, shielding material, magnetic material, non-ferrous metal material and the like into a certain thickness and a certain cross-sectional shape.

[0003] In the processing of silica gel products, the silica gel is made into sheet material and then used to manufacture other products. The raw rubber is mixed with additives, and then formed into silica gel sheet through plasticizing and mixing. The equipment used in the calendering step is the calender.

[0004] However, the existing calender and silica gel production process has the following defects: the rollers on both sides of the same calendering position in the existing calender need to be adjusted separately, which is inconvenient to operate and can easily cause uneven gaps in the calendering position. In addition, in the silica gel production workshop, the temperature of the produced silica gel is about 100 to 150 degrees. In order to ensure the subsequent production process, the silica gel needs to be cooled, which is high in cost, low in efficiency, and occupies a large amount of factory space. The existing calender cannot cool the silica gel while calendering. SUMMARY

[0005] An object of the application is to provide a roller calendering mechanism and a calender which are compact in structure, convenient and stable to operate, and have a silica gel cooling effect.

[0006] To achieve the above object, the application adopts the technical scheme of a roller calendering mechanism comprising a fixing frame, a first rotating seat, a second rotating seat, a first roller, a second roller and an adjusting device. The first rotating seat and the second rotating seat are movably arranged on the fixing frame. The first roller is rotatably connected with the first rotating seat, and the second roller is rotatably connected with the second rotating seat. The adjusting device comprises a first adjuster. The first adjuster is movably connected with the first rotating seat and the second rotating seat in at least a first direction. The first adjuster is adapted to adjust the degree of connection with the first rotating seat and / or the second rotating seat, so that the first roller and the second roller are close to or away from each other.

[0007] In some embodiments, the first rotating seat and the second rotating seat are adapted to slide on the fixed frame in a first direction, and a first connecting port and a second connecting port are respectively arranged on opposite sides of the first rotating seat and the second rotating seat; the first adjuster is arranged between the first rotating seat and the second rotating seat and is engaged with the first connecting port and the second connecting port, and the first adjuster is adapted to move in the first connecting port and / or the second connecting port to make the first rotating seat approach or move away from each other.

[0008] In some embodiments, the first adjuster comprises a first connecting part, an operating part and a second connecting part, which are coaxially arranged in sequence, the first connecting part is provided with threads in the circumferential direction, the first connecting part is threadedly connected with the first connecting port, the second connecting part is provided with threads in the circumferential direction, the second connecting part is threadedly connected with the second connecting port, and the operating part is adapted to be clamped with an operating device in the circumferential direction; an adjusting bolt is arranged on the first connecting part and is adapted to limit the engagement depth of the first connecting part and the first connecting port; an adjusting bolt is arranged on the second connecting part and is adapted to limit the engagement depth of the second connecting part and the second connecting port.

[0009] In some embodiments, the adjusting device comprises a second adjuster connected with the fixed frame on the side of the first rotating seat away from the first adjuster, the second adjuster is adapted to abut against the first rotating seat in the first direction, an adjusting bolt is arranged on the second adjuster and is adapted to limit the distance between the second adjuster and the first rotating seat; the adjusting device comprises a third adjuster connected with the fixed frame on the side of the second rotating seat away from the first adjuster, the third adjuster is adapted to abut against the second rotating seat in the first direction, and an adjusting bolt is arranged on the third adjuster and is adapted to limit the distance between the third adjuster and the second rotating seat.

[0010] In some embodiments, the first roller is provided with a water channel in the axial direction, and the first rotating seat is rotationally connected with the first roller in the circumferential direction of the first roller; the second roller is provided with a water channel in the axial direction, and the second rotating seat is rotationally connected with the second roller in the circumferential direction of the second roller.

[0011] In some embodiments, the first roller and the second roller each comprise a rotating shaft and a calender sleeve, the calender sleeve is nested on the outer circumferential side of the rotating shaft and forms a cooling cavity on the outer circumferential side of the rotating shaft, and the water channel is formed in the axial direction at both ends of the rotating shaft and extends to the inner side of the calender sleeve to communicate with the cooling cavity.

[0012] In some embodiments, at least one support plate is nested between the rotating shaft and the calender sleeve, the support plate is arranged circumferentially along the rotating shaft, and at least one cooling channel is axially arranged in the support plate; the number of the support plates is one or more, and the one or more support plates are symmetrically distributed along the center of the rotating shaft.

[0013] In some embodiments, the first roller is provided with a first transmission shaft at one end, the first transmission shaft is connected with a first driver, the second roller is provided with a second transmission shaft at one end, the second transmission shaft is connected with a second driver; the first transmission shaft is located at a first side of the first roller and the second roller, and the second transmission shaft is located at a second side of the first roller and the second roller; the outer surface of the first roller and the second roller is provided with an anti-sticking layer.

[0014] A calender machine comprising the roller calender mechanism according to any one of the above.

[0015] In some embodiments, the calender machine further comprises a circulation system, the first roller and the second roller are provided with a water channel in the axial direction, the circulation system is connected with both ends of the water channel, and the circulation system is adapted to deliver the cooling liquid flowing out from one end of the water channel to the other end of the water channel.

[0016] Compared with the prior art, the calender machine has the following beneficial effects:

[0017] 1. The roller calender mechanism can quickly and stably change the calendering distance between the two groups of rollers by operating the first adjuster, which is simple to operate and easy to produce and maintain.

[0018] 2. The roller calender mechanism can improve the cooling ability during the calendering process without affecting the calendering function of the rollers, realize rapid and continuous production, and save time cost, labor cost and storage cost.

[0019] 3. The roller calender mechanism can adjust the rotation parameters of each roller by arranging an independent power control system for each roller, so as to obtain different cooling effects and production efficiency, and the structure is compact and does not occupy too much space.

[0020] 4. The calender machine can help the water flowing out of the rollers to be cooled and recycled by arranging a circulation system, which effectively reduces the production cost and environmental pollution. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the roller calender mechanism according to a preferred embodiment of the present application.

[0022] Figure 2 is a connection view of the first roller and the second roller according to a preferred embodiment of the present application.

[0023] Figure 3 is a connection schematic view of the adjusting device according to a preferred embodiment of the present application.

[0024] Figure 4 is an internal structure view of the first roller according to a preferred embodiment of the present application.

[0025] Figure 5 is an overall structure view of the calender according to a preferred embodiment of the present application.

[0026] Figure 6 is a top view of the calender according to a preferred embodiment of the present application.

[0027] Figure 7 is a cross-sectional view along the direction A-A in the Figure 6 according to a preferred embodiment of the present application.

[0028] Figure 8 is a cross-sectional view along the direction B-B in the Figure 6 according to a preferred embodiment of the present application.

[0029] In the figure: 1, fixed frame; 11, first rotating seat; 111, first connecting port; 12, second rotating seat; 121, second connecting port; 2, first roller; 21, rotating shaft; 22, calender sleeve; 23, water channel; 231, connecting passage; 24, cooling cavity; 25, supporting plate; 251, cooling passage; 26, first transmission shaft; 3, second roller; 31, second transmission shaft; 4, adjusting device; 41, first adjuster; 411, first connecting part; 412, operating part; 413, second connecting part; 42, second adjuster; 43, third adjuster; 5, adjusting bolt; 6, first driver; 7, second driver; 8, circulating system. DETAILED DESCRIPTION

[0030] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0031] In the description of the present application, it should be noted that for the orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0032] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or chronological sequence.

[0033] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] The present application will be further described below in conjunction with the accompanying drawings:

[0035] As Figures 1 to 8 shown, the present application provides a roller calender mechanism, which comprises a fixed frame 1, a first rotating seat 11, a second rotating seat 12, a first roller 2, a second roller 3 and an adjusting device 4, the first rotating seat 11 and the second rotating seat 12 are movably arranged on the fixed frame 1, the first roller 2 is rotatably connected with the first rotating seat 11, the second roller 3 is rotatably connected with the second rotating seat 12, the adjusting device 4 comprises a first adjuster 41, the first adjuster 41 movably engages with the first rotating seat 11 and the second rotating seat 12 at least in a first direction, the first adjuster 41 is adapted to adjust the degree of engagement with the first rotating seat 11 and / or the second rotating seat 12, so that the first roller 2 and the second roller 3 are close to or away from each other.

[0036] As Figures 1 to 3 shown in the embodiment, the first rotating seat 11 and the second rotating seat 12 are adapted to move along the first direction (refer to Figure 2 and 3The first adjusting device 41 is arranged between the first rotating seat 11 and the second rotating seat 12, and is engaged with the first connecting port 111 and the second connecting port 121. The first adjusting device 41 is adapted to move in the first connecting port 111 and / or the second connecting port 121, so as to make the first rotating seat 11 close to or away from each other.

[0037] As shown in the embodiments of Figure 2 and 3 , the first adjusting device 41 comprises a first connecting part 411, an operating part 412 and a second connecting part 413. The first connecting part 411, the operating part 412 and the second connecting part 413 are coaxially arranged in sequence. The first connecting part 411 is provided with threads in the circumferential direction. The first connecting part 411 is threadedly connected with the first connecting port 111. The second connecting part 413 is provided with threads in the circumferential direction. The second connecting part 413 is threadedly connected with the second connecting port 121. The operating part 412 is adapted to be clamped with the operating device in the circumferential direction.

[0038] In some embodiments, the adjusting device is a bidirectional screw rod. The threads at both ends of the screw rod are the first connecting part 411 and the second connecting part 413. It can be understood that the thread directions of the first connecting part 411 and the second connecting part 413 are opposite. When the operating part 412 rotates in one direction, the movement states of the first connecting part 411 and the first rotating seat 11 and the movement states of the second connecting part 413 and the second rotating seat 12 are consistent, that is, the first connecting part 411 and the second connecting part 413 can be simultaneously deepened or simultaneously rotated out.

[0039] As shown in the embodiments of Figure 2 and 3 , the first connecting part 411 is provided with an adjusting bolt 5. The adjusting bolt 5 is adapted to limit the engagement depth of the first connecting part 411 and the first connecting port 111. The second connecting part 413 is provided with an adjusting bolt 5. The adjusting bolt 5 is adapted to limit the engagement depth of the second connecting part 413 and the second connecting port 121. The adjusting bolt 5 is used to adjust the stability of the cooperation between the first adjusting device 41 and the first rotating seat 11 and the cooperation between the first adjusting device 41 and the second rotating seat 12. The probability of mutual movement of the first rotating seat 11 and the second rotating seat 12 caused by loose combination position is reduced, and the stability between the first roller 2 and the second roller 3 is improved.

[0040] As shown in the embodiments of Figure 3In the shown embodiment, the adjusting device 4 comprises a second adjusting device 42 connected with the fixed frame 1 on the side of the first rotating seat 11 away from the first adjusting device 41, and the second adjusting device 42 is adapted to abut against the first rotating seat 11 in the first direction; the adjusting device 4 comprises a third adjusting device 43 connected with the fixed frame 1 on the side of the second rotating seat 12 away from the first adjusting device 41, and the third adjusting device 43 is adapted to abut against the second rotating seat 12 in the first direction.

[0041] In some embodiments, the second adjusting device 42 and the third adjusting device 43 are screw rods, and the second adjusting device 42 and the third adjusting device 43 are threadedly connected with the second fixed frame 1, and by rotating the second adjusting device 42 and the third adjusting device 43, the depth of the second adjusting device 42 and the third adjusting device 43 inserted into the fixed frame 1 can be changed, so as to abut against the first rotating seat 11 and the second rotating seat 12 respectively to realize position limiting.

[0042] The second adjusting device 42 is provided with an adjusting bolt 5 adapted to limit the second adjusting device 42 from moving away from the first rotating seat 11, and the third adjusting device 43 is provided with an adjusting bolt 5 adapted to limit the third adjusting device 43 from moving away from the second rotating seat 12, and the adjusting bolt 5 is used to improve the stability of the cooperation between the second adjusting device 42 and the first rotating seat 11 and the third adjusting device 43 and the second rotating seat 12.

[0043] As shown in the embodiment, Figures 1 to 3 In the shown embodiment, the first roller 2 is provided with a water channel 23 in the axial direction, and the first rotating seat 11 is rotationally connected with the first roller 2 in the circumferential direction of the first roller 2; the second roller 3 is provided with a water channel 23 in the axial direction, and the second rotating seat 12 is rotationally connected with the second roller 3 in the circumferential direction of the second roller 3.

[0044] Specifically, the first rotating seat 11 is connected with the first roller 2 through a rotating shaft bearing 21, and the second rotating seat 12 is connected with the second roller 3 through a rotating shaft bearing 21, and since the rotating shaft bearing 21 and the roller are in circumferential contact, the water channel 23 is opened in the axial direction, so that the rotation of the roller and the connection of the water channel 23 do not interfere with each other, and the rotation driving of the roller and the circulation of the cooling water can be realized at the same time.

[0045] As shown in the embodiment, Figure 4In the shown embodiment, the first roller 2 and the second roller 3 each comprise a rotating shaft 21 and a calender sleeve 22, the calender sleeve 22 being nested on the outer circumferential side of the rotating shaft 21 and forming a cooling cavity 24 on the outer circumferential side of the rotating shaft 21, water channels 23 being formed on both ends of the rotating shaft 21 in the axial direction, one end of the water channels 23 extending to the inner side of the calender sleeve 22 and being in communication with the cooling cavity 24, the first roller 2 and the second roller 3 being capable of circulating cooling water inside while rotating, the cooling water being capable of absorbing heat at the calender sleeve 22 and taking away the heat with the circulation of the cooling water, realizing heat exchange during the calendering process and synchronous cooling, thereby improving the efficiency of production and processing and realizing rapid and continuous production.

[0046] Specifically, the communication mode of the water channels 23 on both ends of the rotating shaft 21 with the cooling cavity 24 is that at least one connecting channel 231 is formed on the rotating shaft 21 in the radial direction at one end of the water channels 23 extending to the inner side of the calender sleeve 22, so that the water channels 23 are connected with the cooling cavity 24.

[0047] As shown in the embodiment, Figure 4 In the shown embodiment, at least one support plate 25 is nested between the rotating shaft 21 and the calender sleeve 22, the support plate 25 being arranged circumferentially along the rotating shaft 21, at least one cooling channel 251 being formed on the support plate 25 in the axial direction of the rotating shaft 21, the cooling channel 251 being used to help the cooling cavity 24 to pass through and ensure that the cooling water can circulate smoothly from the cooling cavity 24.

[0048] As shown in the embodiment, Figure 4 In the shown embodiment, the support plate 25 is integrally formed on the rotating shaft 21, which can improve the structural stability of the support plate 25 and thereby improve the supporting property of the support plate 25.

[0049] In some embodiments, the number of support plates 25 is one or more, and the one or more support plates 25 are distributed symmetrically along the center of the rotating shaft 21 to support the calender sleeve 22, reduce the probability of deformation of the cooling cavity 24, and improve the calendering stability.

[0050] As shown in the embodiment, Figure 4 In the shown embodiment, the number of support plates 25 is two, and the two support plates 25 are symmetrically arranged on both ends of the rotating shaft 21.

[0051] It can be understood that the structural design of the adjusting device 4 and the structural design of the roller through which the cooling water passes do not interfere with each other, and the combination of the two can realize a more efficient and practical gap adjusting and cooling calendering function.

[0052] As shown in the embodiment, Figure 1In the shown embodiment, the first roller 2 is provided with a first transmission shaft 26 at one end, the first transmission shaft 26 is connected with the first driver 6, the second roller 3 is provided with a second transmission shaft 31 at one end, the second transmission shaft 31 is connected with the second driver 7; the first transmission shaft 26 is located at the first side of the first roller 2 and the second roller 3, and the second transmission shaft 31 is located at the second side of the first roller 2 and the second roller 3.

[0053] The first driver 6 and the second driver 7 are arranged on the two sides of the first roller 2 and the second roller 3 respectively, so that the space on the two sides of the first roller 2 and the second roller 3 can be balancedly utilized, the space waste is reduced, and the structural arrangement can be more compact.

[0054] The present application provides an independent power control system, the first roller 2 and the second roller 3 are respectively driven by the first driver 6 and the second driver 7, since the silica gel belt is forwarded by the rotation of the first roller 2 and the second roller 3, each roller can be individually controlled in speed to adjust the cooling effect and the production capacity.

[0055] In some embodiments, the first transmission shaft 26 and the second transmission shaft 31 are preferably driven sprockets, the first driver 6 and the second driver 7 are preferably speed reduction motors provided with driving sprockets, the first transmission shaft 26 and the first driver 6 are connected by a chain, and the second transmission shaft 31 and the second driver 7 are connected by a chain.

[0056] In some embodiments, the outer surface of the first roller 2 and the second roller 3 is treated as an anti-sticking surface, for example, by being provided with a nano anti-sticking coating or the like.

[0057] As shown in the embodiments of Figures 5 to 8 The present application also provides a calender, which comprises the roller calender mechanism of any of the above embodiments, and the calender can form a calendering channel by one or more roller calender mechanisms to sequentially calender the silica gel from thick to thin.

[0058] As shown in the embodiments of Figure 5 , 7 and 8, the calender is provided with a circulation system 8, the circulation system 8 is connected with the inlet and outlet of the water channel 23 at the two ends of the first roller 2 and the second roller 3, and the circulation system 8 is adapted to transport the cooling liquid flowing out of the outlet of the water channel 23 to the inlet of the water channel 23.

[0059] As shown in the embodiments of Figure 5 , 7 and 8, the circulation system 8 is arranged above the two sides of the roller calender mechanism, the projection of the circulation system 8 on the ground is located within the projection of the first driver 6 and the second driver 7 on the two sides of the roller calender mechanism, and the circulation system 8 is adapted to fully utilize the upper empty space generated by arranging the first driver 6 and the second driver 7, so as to realize the overall compactness of the equipment.

[0060] The operation process of the calender of the present application is as follows: open the circulating water → open the power supply of the distribution cabinet → open the emergency stop switch → start the total start button → start the feeding → roll calendering rubber → roll surface heat exchange takes away the heat of the rubber → conveyor belt transmission of the cooled rubber → shaping equipment → packaging.

[0061] The calender has high mechanization and automation degree, can realize rapid continuous production, and is simple in equipment operation and maintenance, and can save a large amount of time, labor and space cost.

[0062] The above describes the basic principles, main features and advantages of the present application, and those skilled in the art should understand that the present application is not limited to the above examples, and the above examples and descriptions are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A drum calender mechanism characterized by: The adjusting device comprises a first adjusting device, the first adjusting device is connected with the first rotating seat and the second rotating seat in the first direction, and the first adjusting device is adapted to adjust the engagement degree with the first rotating seat and / or the second rotating seat, so that the first roller and the second roller are close to or away from each other.

2. A drum calender mechanism as claimed in claim 1, characterized in that: The first rotating seat and the second rotating seat are adapted to slide on the fixed frame in the first direction, and the first rotating seat and the second rotating seat are respectively provided with a first connecting port and a second connecting port on opposite sides thereof; the first adjusting device is arranged between the first rotating seat and the second rotating seat and is engaged with the first connecting port and the second connecting port; and the first adjusting device is adapted to move in the first connecting port and / or the second connecting port, so that the first rotating seat is close to or away from each other.

3. A drum calender mechanism as claimed in claim 2, characterized in that: The first adjusting device comprises a first connecting portion, an operating portion and a second connecting portion, which are coaxially arranged in sequence; the first connecting portion is provided with threads in the circumferential direction, and the first connecting portion and the first connecting port are threadedly connected; the second connecting portion is provided with threads in the circumferential direction, and the second connecting portion and the second connecting port are threadedly connected; and the operating portion is adapted to be clamped with an operating device in the circumferential direction; the first connecting portion is provided with an adjusting bolt, which is adapted to limit the engagement depth of the first connecting portion and the first connecting port; and the second connecting portion is provided with an adjusting bolt, which is adapted to limit the engagement depth of the second connecting portion and the second connecting port.

4. A drum calender mechanism as claimed in claim 1, characterized in that: The adjusting device comprises a second adjusting device, which is connected with the fixed frame on the side of the first rotating seat away from the first adjusting device; the second adjusting device is adapted to abut against the first rotating seat in the first direction; the second adjusting device is provided with an adjusting bolt, which is adapted to limit the second adjusting device away from the first rotating seat; the adjusting device comprises a third adjusting device, which is connected with the fixed frame on the side of the second rotating seat away from the first adjusting device; the third adjusting device is adapted to abut against the second rotating seat in the first direction; and the third adjusting device is provided with an adjusting bolt, which is adapted to limit the third adjusting device away from the second rotating seat.

5. A drum calender mechanism as claimed in claim 1, wherein: The first roller is provided with a water channel in the axial direction, and the first rotating seat is rotationally connected with the first roller in the circumferential direction of the first roller; and the second roller is provided with a water channel in the axial direction, and the second rotating seat is rotationally connected with the second roller in the circumferential direction of the second roller.

6. A drum calender mechanism as claimed in claim 5, characterized in that: The first roller and the second roller each comprise a rotating shaft and a calender sleeve, the calender sleeve is nested on the outer circumferential side of the rotating shaft and forms a cooling cavity on the outer circumferential side of the rotating shaft, and the water channel is opened on both ends of the rotating shaft in the axial direction, and one end of the water channel extends to the inside of the calender sleeve and communicates with the cooling cavity.

7. A drum calender mechanism as claimed in claim 6, characterized in that: At least one support plate is nested between the rotating shaft and the calender sleeve, the support plate is arranged circumferentially along the rotating shaft, and at least one cooling channel is opened on the support plate in the axial direction of the rotating shaft; the number of the support plates is one or more, and one or more support plates are distributed symmetrically along the center of the rotating shaft.

8. A drum calender mechanism as claimed in claim 1, characterized in that: The first roller is provided with a first transmission shaft at one end, the first transmission shaft is connected with a first driver, the second roller is provided with a second transmission shaft at one end, the second transmission shaft is connected with a second driver; the first transmission shaft is located on the first side of the first roller and the second roller, and the second transmission shaft is located on the second side of the first roller and the second roller; the outer surface of the first roller and the second roller is provided with an anti-sticking layer.

9. A calender characterized by: The calender mechanism comprises the first roller and the second roller.

10. A calender as claimed in claim 9, characterized in that: The calender mechanism further comprises a circulating system, the first roller and the second roller are provided with a water channel in the axial direction, the circulating system is connected with both ends of the water channel, and the circulating system is suitable for conveying the cooling liquid flowing out from one end of the water channel to the other end of the water channel.

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