Heat exchange roller

Abstract

The utility model relates to the technical field of heat exchange rollers, and particularly discloses a heat exchange roller. The heat exchange roller comprises an inner cylinder and an outer cylinder which are coaxial and arranged inside and outside, the two ends of the inner cylinder are connected with a first sealing head and a second sealing head respectively, and a sealing cavity is formed among the first sealing head, the second sealing head, the inner cylinder and the outer cylinder; a first chamber and a second chamber which are separated from each other are arranged in the first sealing head, the first chamber is communicated with a liquid inlet pipe, and the second chamber is communicated with a liquid outlet pipe; a plurality of first spiral flow channels and a plurality of second spiral flow channels are alternately arranged in the sealing cavity in the annular direction, and the first spiral flow channels and the adjacent second spiral flow channels are communicated to form heat exchange flow channels. The liquid inlet end of the heat exchange runner communicates with the first cavity through the first through hole, and the liquid outlet end of the heat exchange runner communicates with the second cavity through the second through hole. The heat exchange roller can improve the heat exchange utilization rate and reduce energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange roller technology, and in particular to a heat exchange roller. Background Technology

[0002] A heat exchange roller is a device used in industrial production to achieve heat exchange, conveying heat transfer media such as water, oil, or steam through internal channels. The internal channels of a heat exchange roller typically employ multi-layered or spiral channels. In the production of lithium battery separators, heat exchange rollers are commonly used for temperature control of the separator.

[0003] Patent CN216329498U discloses a near-zero temperature difference spiral flow channel heat exchange roller for a longitudinal drawing machine. A return pipe is sleeved outside the inlet pipe, and drain pipes are evenly distributed on the surface of the return pipe. The inner cavity of the inlet pipe is connected to a spiral-shaped liquid exchange chamber through the drain pipes. Through holes are evenly distributed on the outer surface of the return pipe, and the liquid exchange chamber is connected to the inner cavity of the return pipe through these through holes. During operation, the heat exchange medium enters through the inlet pipe, then flows into the liquid exchange chamber through the drain pipes for heat exchange. After heat exchange, it flows into the return pipe through the through holes and is then discharged through the return pipe, forming a cycle. This heat exchange roller achieves rapid heat exchange through rapid water circulation. However, due to the short residence time of the heat transfer medium inside the roller, there are problems of low heat exchange utilization and high energy consumption.

[0004] Therefore, it is necessary to design a heat exchange roller to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to propose a heat exchange roller that can improve heat exchange efficiency and reduce energy consumption.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A heat exchange roller includes an inner cylinder and an outer cylinder that are coaxial and arranged inside and outside each other. The two ends of the inner cylinder are respectively connected to a first end cap and a second end cap, and a sealed cavity is formed between the first end cap, the second end cap, the inner cylinder, and the outer cylinder.

[0008] The first end cap is provided with a first chamber and a second chamber that are separated from each other. The first chamber is connected to a liquid inlet pipe, and the second chamber is connected to a liquid outlet pipe.

[0009] The sealed cavity is provided with a plurality of first spiral channels and a plurality of second spiral channels alternately arranged in the circumferential direction. The first spiral channels and the adjacent second spiral channels are connected to form a heat exchange channel. The liquid inlet end of the heat exchange channel is connected to the first chamber through a first through hole, and the liquid outlet end of the heat exchange channel is connected to the second chamber through a second through hole.

[0010] Furthermore, the heat exchange channel is formed within the sealed cavity by a plurality of first spiral plates and a plurality of second spiral plates alternately arranged circumferentially along the inner cylinder;

[0011] The two ends of the first spiral plate abut against the first end cap and the second end cap, respectively; one end of the second spiral plate abuts against the first end cap, and the other end is spaced apart from the second end cap.

[0012] Furthermore, the central axis of the first chamber and the central axis of the second chamber are collinear with the central axis of the first end cap; one end of the inlet pipe is coaxially connected to the first end cap; a pipe connector is coaxially sleeved on the outside of the inlet pipe, and the inner diameter of the pipe connector is larger than the outer diameter of the inlet pipe; the pipe connector connects the second chamber and the outlet pipe.

[0013] Furthermore, a number of connecting blocks are provided circumferentially between the liquid inlet pipe and the pipe joint.

[0014] Furthermore, the first end cap has a first connecting portion with the same outer diameter as the inner cylinder, and one end of each of the first through holes and one end of each of the second through holes are opened on the outer periphery of the first connecting portion; one end of the first connecting portion is provided with a positioning boss; the outer periphery of the first connecting portion is provided with a first abutting portion along the circumferential direction, and the first abutting portion is sealed to the outer cylinder.

[0015] Furthermore, the second end cap has a second connecting portion with the same outer diameter as the inner cylinder; one end of the second connecting portion is provided with an annular positioning protrusion; the outer periphery of the second connecting portion is provided with a second abutting portion along the circumferential direction, and the second abutting portion is sealed to the outer cylinder.

[0016] Furthermore, the second end cap is coaxially connected to a shaft head.

[0017] Furthermore, end caps are connected to both ends of the outer cylinder.

[0018] The beneficial effects of this utility model are as follows: This utility model sets the heat exchange medium inlet and outlet on the same side, and adopts a first spiral flow channel and an adjacent second spiral flow channel to form a heat exchange flow channel, which greatly extends the residence time of the heat exchange medium in the roller, improves the heat exchange utilization rate, and reduces energy consumption. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a heat exchange roller provided by this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of a heat exchange roller provided by this utility model.

[0021] Figure 3 This is a structural diagram of the first end cap.

[0022] Figure 4 This is a schematic diagram of the second end cap. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 4 As shown, a heat exchange roller includes an inner cylinder 1 and an outer cylinder 2, which are coaxially arranged and disposed inside and outside each other. The two ends of the inner cylinder 1 are respectively connected to a first end cap 3 and a second end cap 4, forming a sealed cavity 10 between the first end cap 3, the second end cap 4, the inner cylinder 1, and the outer cylinder 2. The first end cap 3 is provided with a first chamber 31 and a second chamber 32 that are separated from each other. The first chamber 31 is connected to an inlet pipe 5, and the second chamber 32 is connected to an outlet pipe. A plurality of first spiral channels 61 and a plurality of second spiral channels 62 are alternately arranged in the circumferential direction in the sealed cavity 10. The first spiral channels 61 and the adjacent second spiral channels 62 are connected to form a heat exchange channel 6. The inlet end of the heat exchange channel 6 is connected to the first chamber 31 through a first through hole 33, and the outlet end of the heat exchange channel 6 is connected to the second chamber 32 through a second through hole 34.

[0025] In use, the heat exchange medium enters the first chamber 31 through the liquid inlet pipe 5, enters the heat exchange channel 6 through the first through hole 33, flows from the end near the first end cap 3 to the end near the second end cap 4 through the heat exchange channel 6, then flows from the end near the second end cap 4 to the end near the first end cap 3, and then flows into the second chamber 32 through the second through hole 34 and flows out through the liquid outlet pipe for circulation.

[0026] In a preferred embodiment of this utility model, a heat exchange channel 6 is formed within the sealing cavity 10 by a plurality of first spiral plates 11 and a plurality of second spiral plates 12 alternately arranged circumferentially along the inner cylinder 1. The two ends of the first spiral plates 11 abut against the first end cap 3 and the second end cap 4, respectively; one end of the second spiral plates 12 abuts against the first end cap 3, and the other end is spaced apart from the second end cap 4. Specifically, the gap between the second spiral plates 12 and the adjacent first spiral plates 11 within the sealing cavity 10 forms a first spiral channel 61 and a second spiral channel 62. Since the second spiral plates 12 are spaced apart from the second end cap 4, the ends of the first spiral channels 61 and 62 near the second end cap 4 are connected. During heat exchange, the heat exchange medium flows from the end of the first spiral channel 61 near the first end cap 3 to the end near the second end cap 4, then enters the second spiral channel 62, and flows back through the second spiral channel 62 to the end near the first end cap 3. Therefore, in the heat exchange roller of this application, the heat exchange medium stays in the roller for a longer time, which greatly improves the heat exchange utilization rate and reduces energy consumption.

[0027] In this heat exchange roller, preferably, the central axis of the first chamber 31 and the central axis of the second chamber 32 are collinear with the central axis of the first end cap 3; one end of the liquid inlet pipe 5 is coaxially connected to the first end cap 3; a pipe joint 7 is coaxially sleeved on the outside of the liquid inlet pipe 5, and the inner diameter of the pipe joint 7 is larger than the outer diameter of the liquid inlet pipe 5; the pipe joint 7 connects the second chamber 32 and the liquid outlet pipe.

[0028] Furthermore, several connecting blocks 71 are provided circumferentially between the liquid inlet pipe 5 and the pipe joint 7 to improve the stability of the connection between the liquid inlet pipe 5 and the pipe joint 7.

[0029] In this heat exchange roller, such as Figure 3 As shown, the first end cap 3 has a first connecting portion 301 with the same outer diameter as the inner cylinder 1. One end of each first through hole 33 and one end of each second through hole 34 are opened on the outer periphery of the first connecting portion 301. One end of the first connecting portion 301 is provided with a positioning boss 302 for positioning one end of the inner cylinder 1. The outer periphery of the first connecting portion 301 is provided with a first abutting portion 303 in the circumferential direction. The first abutting portion 303 is sealed to the outer cylinder 2. One end of each first spiral plate 11 and one end of each second spiral plate 12 abut against one end face of the first abutting portion 303.

[0030] In this heat exchange roller, such as Figure 4 As shown, the second end cap 4 has a second connecting portion 41 with the same outer diameter as the inner cylinder 1; one end of the second connecting portion 41 is provided with an annular positioning protrusion 42 for positioning one end of the inner cylinder 1; the outer periphery of the second connecting portion 41 is provided with a second abutting portion 43 in the circumferential direction, the second abutting portion 43 is sealed to the outer cylinder 2, and the other end of each first spiral plate 11 abuts against one end face of the second abutting portion 43.

[0031] In this embodiment, the second end cap 4 is coaxially connected to the shaft head 8. In addition, end caps 9 are connected to both ends of the outer cylinder 2, which are used to encapsulate the inner cylinder, the first end cap 3, and the second end cap 4 inside the outer cylinder 2.

[0032] The present invention discloses a heat exchange roller in which the inlet and outlet of the heat exchange medium are located on the same side. A heat exchange channel 6 is formed by the first spiral flow channel 61 and the adjacent second spiral flow channel 62, which greatly prolongs the residence time of the heat exchange medium in the roller, improves the heat exchange utilization rate, and reduces energy consumption.

[0033] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A heat exchange roller, characterized by, It includes an inner cylinder (1) and an outer cylinder (2) that are coaxial and arranged inside and outside. The two ends of the inner cylinder (1) are respectively connected to a first end cap (3) and a second end cap (4). A sealed cavity (10) is formed between the first end cap (3), the second end cap (4), the inner cylinder (1) and the outer cylinder (2). The first end cap (3) is provided with a first chamber (31) and a second chamber (32) separated from each other. The first chamber (31) is connected to an inlet pipe (5), and the second chamber (32) is connected to an outlet pipe. The sealed cavity (10) is provided with a plurality of first spiral channels (61) and a plurality of second spiral channels (62) arranged alternately in the circumferential direction. The first spiral channels (61) and the adjacent second spiral channels (62) are connected to form a heat exchange channel (6). The liquid inlet end of the heat exchange channel (6) is connected to the first chamber (31) through the first through hole (33), and the liquid outlet end of the heat exchange channel (6) is connected to the second chamber (32) through the second through hole (34).

2. A heat exchange roller according to claim 1, wherein The heat exchange channel (6) is formed inside the sealed cavity (10) by a plurality of first spiral plates (11) and a plurality of second spiral plates (12) arranged alternately in the circumferential direction along the inner cylinder (1). The two ends of the first spiral plate (11) abut against the first end cap (3) and the second end cap (4) respectively; one end of the second spiral plate (12) abuts against the first end cap (3), and the other end is spaced apart from the second end cap (4).

3. A heat exchange roller according to claim 1, wherein The central axis of the first chamber (31) and the central axis of the second chamber (32) are collinear with the central axis of the first end cap (3); one end of the inlet pipe (5) is coaxially connected to the first end cap (3); a pipe connector (7) is coaxially sleeved on the outside of the inlet pipe (5), and the inner diameter of the pipe connector (7) is larger than the outer diameter of the inlet pipe (5); the pipe connector (7) connects the second chamber (32) and the outlet pipe.

4. A heat exchange roller according to claim 3, wherein A plurality of connecting blocks (71) are provided circumferentially between the liquid inlet pipe (5) and the pipe joint (7).

5. The heat exchange roller of claim 1, wherein The first end cap (3) has a first connecting part (301) with the same outer diameter as the inner cylinder (1). One end of each of the first through holes (33) and one end of the second through holes (34) are opened on the outer periphery of the first connecting part (301). One end of the first connecting part (301) is provided with a positioning boss (302). The outer periphery of the first connecting part (301) is provided with a first abutting part (303) in the circumferential direction. The first abutting part (303) is sealed to the outer cylinder (2).

6. The heat exchange roller of claim 1, wherein The second end cap (4) has a second connecting part (41) with the same outer diameter as the inner cylinder (1); one end of the second connecting part (41) is provided with an annular positioning protrusion (42); the outer periphery of the second connecting part (41) is provided with a second abutment part (43) along the circumferential direction, and the second abutment part (43) is sealed to the outer cylinder (2).

7. A heat exchange roller according to claim 1 or 6, wherein The second end cap (4) is coaxially connected to a shaft head (8).

8. The heat exchange roller of claim 1, wherein Two ends of the outer cylinder (2) are respectively connected with end covers (9).

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