A corrugated tube heat exchanger for wire drawing machine

Abstract

The utility model discloses a corrugated pipe heat exchanger for wire drawing machine belongs to heat exchanger field, including the casing, its top both sides are provided with the import pipe and export pipe with its intercommunication respectively, the both ends of casing are rotated and are connected with the connecting pipe through the sealing bearing on the end cover, is provided with the tube bundle mechanism with its intercommunication between connecting pipe, the tube bundle mechanism can rotate in the inside of casing through drive mechanism, when rotating, the tube bundle mechanism can clean the inner wall of casing, the tube bundle mechanism includes the installation end head with connecting pipe intercommunication, at least is provided with three corrugated pipes around casing axial direction between installation end head, is provided with cleaning assembly between installation end head. The corrugated pipe heat exchanger for wire drawing machine, through drive mechanism drives the tube bundle mechanism to rotate in the casing, and the rotating tube bundle mechanism can utilize cleaning assembly to realize the cleaning of casing inner wall, avoids the scale accumulation, ensures that the heat exchange surface always keeps clean, maintains the efficient heat transfer.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a corrugated tube heat exchanger for a wire drawing machine. Background Technology

[0002] A bellows heat exchanger is a high-efficiency heat exchanger with a bellows tube bundle as its core heat exchange element. Its key feature is the enhanced heat transfer efficiency achieved through the bellows structure on the tube bundle surface. Wire drawing machines are used in the metal processing industry to draw metal wires into fine filaments. During operation, they generate a large amount of heat, requiring efficient heat dissipation to maintain process stability. During the drawing process, the friction between the wire and the die generates high temperatures. The drawing oil, in addition to lubrication, needs to remove this heat. Excessive temperature can lead to oil carbonization and lubrication failure. A bellows heat exchanger transfers the heat from the high-temperature medium to the shell-side cooling medium (such as circulating water or a low-temperature emulsion), controlling the oil temperature within a reasonable range (typically 40-60℃) to ensure effective lubrication and extend equipment lifespan.

[0003] Impurities such as metal shavings, lubricant carbonization products (sludge), and oxide scale generated during the wire drawing process flow with the shell-side cooling medium and easily adhere to the inner wall of the shell and the surface of the tube bundle. The scale layer has an extremely low thermal conductivity, which leads to a significant decrease in the heat transfer efficiency of the heat exchanger. Traditional heat exchanger shell cleaning requires manual disassembly to remove the scale layer. Disassembly and cleaning result in long downtime of the heat exchanger, affecting production capacity. In addition, frequent disassembly can lead to aging and leakage of seals, increasing additional maintenance costs. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that scale easily forms on the inner wall of the heat exchanger shell of the existing corrugated tube heat exchanger for wire drawing machine during use, which leads to a reduction in heat transfer efficiency. Therefore, a corrugated tube heat exchanger for wire drawing machine is proposed.

[0005] To achieve the above objectives, the present invention employs the following technology: a corrugated tube heat exchanger for a wire drawing machine, comprising a shell, with an inlet pipe and an outlet pipe respectively connected to the top two sides of the shell. The two ends of the shell are rotatably connected to connecting pipes via sealing bearings on the end caps. A tube bundle mechanism is provided between the connecting pipes and is connected to them. The tube bundle mechanism can rotate inside the shell via a drive mechanism. When rotating, the tube bundle mechanism can clean the inner wall of the shell.

[0006] As a further description of the above technical solution: the tube bundle mechanism includes an installation end that communicates with the connecting tube, and at least three corrugated tubes are arranged between the installation ends around the axis of the housing.

[0007] As a further description of the above technical solution: a cleaning component is provided between the mounting ends;

[0008] The cleaning assembly includes a mounting rod arranged along the axial direction of the housing, and a scraper that contacts the inner wall of the housing is provided on the mounting rod.

[0009] As a further description of the above technical solution: the two ends of the mounting rod are provided with limiting plates that abut against the mounting end, and the mounting rod is provided with mounting bolts that cooperate with the mounting end slots.

[0010] As a further description of the above technical solution: the tube bundle mechanism also includes a baffle plate disposed on the bellows, and a washer is disposed in the orifice of the baffle plate that mates with the bellows.

[0011] As a further description of the above technical solution: the diameter of the spoiler is smaller than the inner diameter of the shell, and a guide wheel is provided on the spoiler through the mounting groove. The guide wheel protrudes from the outer side of the spoiler and abuts against the inner wall of the shell.

[0012] As a further description of the above technical solution: the driving mechanism includes a motor mounted below the end cap via a mounting plate, a transmission chain being mounted on the output end via a drive sprocket, a driven sprocket cooperating with the transmission chain being mounted on the connecting pipe, and a rotary pipe joint being mounted on the connecting pipe.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] The drive mechanism rotates the tube bundle mechanism, and the rotation of the tube bundle drives the scraper to continuously scrape away dirt (such as sludge and metal particles) from the inner wall of the shell, avoiding scale accumulation and ensuring that the heat exchange surface is always clean, maintaining efficient heat transfer. The rotating scraper structure can clean simultaneously during equipment operation without interrupting production, shortening maintenance time and improving equipment utilization. Attached Figure Description

[0015] Figure 1 A cross-sectional view according to an embodiment of the present invention is shown;

[0016] Figure 2 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0017] Figure 3 A partial structural schematic diagram according to an embodiment of the present utility model is shown;

[0018] Figure 4 A schematic diagram of the structure of the cleaning assembly provided according to an embodiment of the present invention is shown;

[0019] Figure 5 A schematic diagram of the structure of the spoiler provided according to an embodiment of the present invention is shown;

[0020] Figure 6A schematic diagram of the drive mechanism provided according to an embodiment of the present invention is shown.

[0021] Legend:

[0022] 1. Shell; 2. Inlet pipe; 3. Outlet pipe; 4. End cap; 5. Connecting pipe; 51. Driven sprocket; 52. Rotary pipe joint; 6. Pipe bundle mechanism; 61. Mounting end; 62. Bellows; 63. Spoiler; 631. Washer; 632. Mounting groove; 633. Guide wheel; 64. Cleaning assembly; 641. Mounting rod; 642. Scraper; 643. Limiting plate; 644. Mounting bolt; 7. Drive mechanism; 71. Mounting plate; 72. Motor; 73. Drive sprocket; 74. Transmission chain. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1-6 This embodiment provides a corrugated tube heat exchanger for a wire drawing machine, including a shell 1. An inlet pipe 2 and an outlet pipe 3 are respectively provided on the top two sides of the shell 1 and are connected to it. The two ends of the shell 1 are rotatably connected to connecting pipes 5 through sealing bearings on end caps 4. A tube bundle mechanism 6 is provided between the connecting pipes 5 and is connected to them. The tube bundle mechanism 6 can rotate inside the shell 1 through a drive mechanism 7. When rotating, the tube bundle mechanism 6 can clean the inner wall of the shell 1. The tube bundle mechanism 6 includes an installation end 61 connected to the connecting pipe 5. At least three corrugated pipes 62 are provided between the installation ends 61 around the axis of the shell 1. A cleaning component 64 is provided between the installation ends 61. The cleaning component 64 includes an installation rod 641 arranged along the axial direction of the shell 1. A scraper 642 that contacts the inner wall of the shell 1 is provided on the installation rod 641.

[0025] In this invention, the low-temperature coolant flows into the connecting pipe 5 from the outside through the rotary pipe joint 52, enters the heat exchange tube of the tube bundle mechanism 6, absorbs the heat of the high-temperature medium in the shell side, and then flows out through the connecting pipe 5 at the other end, returning to the cooling system for cooling. The high-temperature oil generated by the wire drawing machine enters the shell 1 from the inlet pipe 2, flows on the outside (shell side) of the tube bundle mechanism 6, and transfers heat to the tube side coolant through the tube wall of the heat exchange tube. After cooling, it returns to the process system from the outlet pipe 3. During the heat exchange process, the drive mechanism 7 drives the connecting pipe 5 to rotate, which drives the mounting ends 61 at both ends and the connected corrugated pipe 62 to rotate synchronously. The scraper 642 mounted on the mounting rod 641 rotates with the tube bundle, and its edge keeps in contact with the inner wall of the shell 1 to scrape off the deposited dirt. The sealed bearing ensures the sealing when the tube bundle rotates to prevent the shell side medium from leaking. The scraper 642 is made of elastic material (such as polytetrafluoroethylene filled) or hard alloy (such as tungsten carbide), which can effectively scrape dirt and avoid scratching the inner wall of the shell 1.

[0026] In addition, the mounting rod 641 is provided with limiting plates 643 at both ends that abut against the mounting end 61, and the mounting rod 641 is provided with mounting bolts 644 that cooperate with the mounting end 61 slot. The connection structure between the mounting rod 641 and the mounting end 61 is doubly fixed by the limiting plates 643 and the mounting bolts 644, ensuring that the cleaning component 64 is stable and reliable during rotation, while also allowing the cleaning component 64 to be disassembled for easy inspection and cleaning.

[0027] It should be noted that the drive mechanism 7 includes a motor 72 mounted below the end cap 4 via a mounting plate 71. A drive chain 74 is mounted on the output end of the motor 72 via a drive sprocket 73. A driven sprocket 51 that cooperates with the drive chain 74 is mounted on the connecting pipe 5. A rotary pipe joint 52 is also mounted on the connecting pipe 5. When the drive mechanism 7 drives the tube bundle mechanism 6 to rotate, the motor 72 on the mounting plate 71 starts and drives the connecting pipe 5 to rotate via the drive sprocket 73, drive chain 74, and driven sprocket 51, thereby driving the tube bundle mechanism 6 to rotate synchronously. The design of the rotary pipe joint 52 on the connecting pipe 5 is to ensure that the rotation of the tube bundle mechanism 6 does not affect the circulation of the cryogenic coolant and ensures that the cryogenic coolant can flow into the tube bundle mechanism 6.

[0028] Specifically, such as Figure 3 and Figure 5 As shown, the tube bundle mechanism 6 also includes a spoiler 63 disposed on the bellows 62. A washer 631 is disposed in the orifice of the spoiler 63 that mates with the bellows 62. The diameter of the spoiler 63 is smaller than the inner diameter of the housing 1. A guide wheel 633 is disposed on the spoiler 63 through the mounting groove 632. The guide wheel 633 protrudes from the outer side of the spoiler 63 and abuts against the inner wall of the housing 1.

[0029] The baffle 63 reinforces several bellows 62. The gasket 631 is embedded in the orifice where the baffle 63 and the bellows 62 meet, acting as a flexible seal to fill the gap between them, absorbing vibrations during tube bundle rotation, and preventing wear or leakage of the bellows 62 due to rigid contact. In addition, when the tube bundle mechanism 6 rotates, the guide wheel 633 rolls along the inner wall of the housing 1, providing radial support and guidance for the tube bundle mechanism 6, constraining the rotation trajectory of the tube bundle mechanism 6, keeping it coaxial, and avoiding vibration or collision caused by eccentricity. Furthermore, when the baffle 63 rotates synchronously with the bellows 62, it can disturb the fluid in the housing 1, disrupting the laminar flow state of the fluid in the housing 1, and promoting the formation of turbulent flow, thereby increasing the contact frequency and mixing effect between the fluid and the outer wall of the bellows 62.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A corrugated tube heat exchanger for a wire drawing machine, characterized in that, The shell (1) includes an inlet pipe (2) and an outlet pipe (3) connected to it on its top two sides respectively. The two ends of the shell (1) are rotatably connected to the connecting pipe (5) through the sealing bearing on the end cap (4). A tube bundle mechanism (6) is provided between the connecting pipes (5) and connected to them. The tube bundle mechanism (6) can rotate inside the shell (1) through the drive mechanism (7). When rotating, the tube bundle mechanism (6) can clean the inner wall of the shell (1).

2. The corrugated tube heat exchanger for a wire drawing machine according to claim 1, characterized in that, The tube bundle mechanism (6) includes an installation end (61) connected to the connecting tube (5), and at least three bellows (62) are provided between the installation ends (61) around the axis of the housing (1).

3. A corrugated tube heat exchanger for a wire drawing machine according to claim 2, characterized in that, A cleaning component (64) is provided between the mounting ends (61). The cleaning assembly (64) includes a mounting rod (641) arranged along the axial direction of the housing (1), and a scraper (642) that contacts the inner wall of the housing (1) is provided on the mounting rod (641).

4. A corrugated tube heat exchanger for a wire drawing machine according to claim 3, characterized in that, The mounting rod (641) is provided with limiting plates (643) at both ends that abut against the mounting end (61), and the mounting rod (641) is provided with mounting bolts (644) that cooperate with the mounting end (61) slot.

5. A corrugated tube heat exchanger for a wire drawing machine according to claim 3 or 4, characterized in that, The tube bundle mechanism (6) also includes a baffle (63) disposed on the bellows (62), and a washer (631) is disposed in the orifice of the baffle (63) that mates with the bellows (62).

6. A corrugated tube heat exchanger for a wire drawing machine according to claim 5, characterized in that, The diameter of the spoiler (63) is smaller than the inner diameter of the housing (1). A guide wheel (633) is provided on the spoiler (63) through the mounting groove (632). The guide wheel (633) protrudes from the outer side of the spoiler (63) and abuts against the inner wall of the housing (1).

7. A bellows heat exchanger for a wire drawing machine according to claim 1, characterized in that, The drive mechanism (7) includes a motor (72) mounted below the end cap (4) via a mounting plate (71), a drive chain (74) is provided on its output end via a drive sprocket (73), a driven sprocket (51) is provided on the connecting pipe (5) to cooperate with the drive chain (74), and a rotary pipe joint (52) is provided on the connecting pipe (5).

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