A wire drawing oil cooling supply system

Abstract

This invention discloses a wire drawing oil cooling supply system, comprising a wire drawing oil tank, within which are sequentially arranged a first filtration channel, a second filtration channel, and a heat dissipation tank. The first filtration channel contains a wire drawing oil inlet pipe, and the heat dissipation tank contains a wire drawing oil outlet pipe. A lower outlet channel is located at the lower end of the wire drawing oil tank between the first and second filtration channels, and an upper outlet channel is located at the upper end of the wire drawing oil tank between the second filtration channel and the heat dissipation tank. A heat dissipation component is located within the heat dissipation tank on one side of the upper outlet channel. A cooling pipe connecting the second filtration channel and the heat dissipation component to the side wall of the heat dissipation tank is provided. The heat dissipation component includes multiple guide plates spaced vertically, each guide plate being inclined and partially overlapping horizontally between adjacent guide plates, forming a guide channel between the guide plates. Multiple cooling pipes are arranged side-by-side within the guide channel. This invention can improve the filtration and heat dissipation effect of wire drawing oil.

Description

Technical Field

[0001] This invention relates to a wire drawing oil cooling device, and more particularly to a wire drawing oil cooling supply system. Background Technology

[0002] During the copper wire drawing process, drawing oil is used to improve the surface smoothness of the copper wire, prevent damage and burrs, and cool the wire, mitigating the temperature rise caused by drawing the wire from thick to thin. To cool the drawing oil after use, manufacturers need to centrally collect and dissipate it, then re-extract it into each drawing machine after cooling. Currently, manufacturers use an external drawing oil tank to cool the oil, piped from each drawing machine into the tank, allowing it to cool naturally in the open air.

[0003] However, during the copper wire drawing process, a small amount of copper powder or impurities will fall into the drawing oil, and some garbage from the open environment will also enter the drawing oil tank. This causes these impurities to re-enter the drawing machine with the circulating drawing oil, easily causing scratches on the copper wire during drawing and accumulating in the pipes, leading to blockages and affecting the recycling of the drawing oil. To solve this problem, manufacturers currently install a filter screen at the drawing oil suction pipe to filter out some large impurities and prevent them from entering the pipes and causing blockages. However, the filter screen cannot intercept small particles such as copper powder and dust, making its filtration effect less than ideal.

[0004] Furthermore, after entering the drawing oil tank, the drawing oil remains stationary and cools naturally due to the influence of the external temperature. However, because the drawing machine needs to continuously extract the drawing oil from the tank during operation, and to ensure the stability of the extraction, the suction pipe needs to extend deep into the bottom of the tank, this results in most of the drawing oil settling on the inner side of the tank and failing to dissipate heat quickly. Only the surface portion achieves a relatively stable cooling effect, making this cooling method less than ideal. On the other hand, the drawing oil is also subject to being extracted again after a short period of settling, leaving insufficient time for heat dissipation. Increasing the total amount of drawing oil stored to extend its residence time in the tank would significantly increase the cost of the drawing oil, making it less feasible.

[0005] Therefore, existing wire drawing oil cooling devices suffer from poor filtration and heat dissipation. Summary of the Invention

[0006] The purpose of this invention is to provide a wire drawing oil cooling supply system. This system improves the filtration and heat dissipation effects of the wire drawing oil.

[0007] The technical solution of the present invention is as follows: A wire drawing oil cooling supply system includes a wire drawing oil tank, in which a first filtration channel, a second filtration channel, and a heat dissipation tank are sequentially arranged. The first filtration channel has a wire drawing oil inlet pipe, and the heat dissipation tank has a wire drawing oil outlet pipe. A lower outlet channel is located at the lower end of the wire drawing oil tank between the first and second filtration channels. An upper outlet channel is located at the upper end of the wire drawing oil tank between the second filtration channel and the heat dissipation tank. A heat dissipation component is located in the heat dissipation tank on one side of the upper outlet channel. A cooling pipe connecting the side wall of the heat dissipation tank is provided between the second filtration channel and the heat dissipation component. The heat dissipation component includes multiple guide plates arranged vertically at intervals. Each guide plate is inclined and adjacent guide plates partially overlap horizontally, forming an S-shaped guide channel between the guide plates. Multiple cooling pipes are arranged side-by-side within the guide channels.

[0008] In the aforementioned wire drawing oil cooling supply system, the two side walls of the heat dissipation pool are provided with slides, and the two ends of the guide plate are rotatably connected to sliders that are slidably connected in the slides. One end of the slider is connected to a pull rope through a wire groove, and the pull rope is provided with a rope clamp for supporting the slider.

[0009] In the aforementioned wire drawing oil cooling supply system, the two ends of the guide plate are connected to the slider via a rotating shaft. The rotating shaft is provided with a positioning key, and the slider is provided with a positioning groove that matches the positioning key. The guide plate is provided with a counterweight rod on the side away from the cooling pipe.

[0010] In the aforementioned wire drawing oil cooling supply system, the cooling pipe has a rectangular cross-sectional shape, and the guide plate includes an alternately arranged left guide plate and a right guide plate. The end of the left guide plate extends to the bottom of the cooling pipe and partially overlaps with the cooling pipe, and the end of the right guide plate extends to the bottom of the cooling pipe and partially overlaps with the cooling pipe.

[0011] In the aforementioned wire drawing oil cooling supply system, the counterweight rod is in the shape of a round tube, and the upper end of the round tube extends above the guide plate.

[0012] In the aforementioned wire drawing oil cooling supply system, the guide plate includes a mounting frame, the surface of which is provided with a waterproof membrane layer, and the surface of the waterproof membrane layer is covered with a fluff layer.

[0013] In the aforementioned wire drawing oil cooling supply system, the upper end of the draw rope extends to the outside of the heat dissipation pool and is connected to a fixed pulley.

[0014] In the aforementioned wire drawing oil cooling supply system, the two ends of the cooling pipe are respectively connected to a cooling water inlet pipe and a cooling water outlet pipe.

[0015] In the aforementioned wire drawing oil cooling supply system, the wire drawing oil tank is provided with a first partition and a second partition, a first filtration channel is formed between the first partition and the wire drawing oil tank, a second filtration channel is formed between the first partition and the second partition, and a heat dissipation tank is formed between the second partition and the wire drawing oil tank. The lower end of the first partition forms a plurality of circular hole-shaped lower liquid outlet channels, the upper end surface of the second partition is lower than the top surface of the first partition and the wire drawing oil tank, and an upper liquid outlet channel is formed between the second partition and the side wall of the wire drawing oil tank. The heat dissipation component is located in the heat dissipation tank on one side of the second partition, and the cooling pipes are arranged side by side on the side wall of the second partition.

[0016] The aforementioned wire drawing oil cooling supply system also includes an operating lever with multiple rotating rods arranged side by side on the operating lever to cooperate with the guide plates. When the guide plates are placed into the heat dissipation tank, the rotating rods first drive each guide plate to rotate, causing the cooling tubes of the guide plates to separate from each other in the horizontal direction. Then, the operating lever and the guide plates are lowered into the heat dissipation tank together. After the guide plates are placed in place, the operating lever is removed so that the guide plates are rotated and reset under the action of the counterweight rod and are in a state of partial overlap with the cooling tubes.

[0017] Compared with the prior art, the present invention has the following characteristics:

[0018] (1) The present invention uses a lower outlet channel located at the lower end of the drawing oil tank, which allows the drawing oil to flow through the lower outlet channel to the second filtration channel after entering the first filtration channel. This allows lighter impurities and dust in the drawing oil to float on the surface of the drawing oil in the first filtration channel, achieving a first-stage filtration effect. Using an upper outlet channel located at the upper end of the drawing oil tank, the drawing oil passes through the top of the second filtration channel and enters the heat dissipation tank. Heavier impurities in the drawing oil are deposited at the bottom of the first and second filtration channels, thus achieving a second-stage filtration effect. With the above combination, the present invention can separate and remove waste of different densities in the drawing oil, improving the filtration effect of the drawing oil.

[0019] (2) After entering the heat dissipation tank, the drawing oil can flow in an S-shape along the guide plate through the cooperation of the heat dissipation components and the cooling pipe. During the flow, the drawing oil will come into contact with the cooling pipe multiple times, thereby using the cooling pipe to achieve rapid heat dissipation of the drawing oil and effectively improving the heat dissipation efficiency of the drawing oil. During the flow, the drawing oil comes into full contact with the outside air, thereby further improving the heat dissipation effect of the outside ambient temperature environment on the drawing oil. This means that the drawing oil has completed the basic cooling process when it enters the heat dissipation tank, alleviating the problem of insufficient heat dissipation caused by the drawing oil being left to stand for too short a time.

[0020] (3) Through the combination of the waterproof membrane layer and the fluff layer on the guide plate, small particle impurities such as copper powder mixed in the drawing oil can be intercepted during the flow of the drawing oil. The impurities are attached to the surface of the fluff layer after the drawing oil flows through, thereby further improving the filtration effect of the drawing oil and preventing impurities with small particle size or similar density in the drawing oil from flowing into the heat dissipation pool together, thereby further improving the heat dissipation effect of the drawing oil.

[0021] (4) By optimizing the installation structure of the guide plate, the guide plate can be tilted and overlapped with the cooling pipe after placement, so that the drawing oil can fall stably into the cooling pipe after flowing out of the guide plate. When the guide plate needs to be cleaned, the operator can pull the guide plate vertically with the pull rope, so that the guide plate can rotate and be pulled out smoothly after contacting the cooling pipe. When it is put in, the guide plate can also be lowered to the low position along the slide by the operating rod, which facilitates the disassembly and assembly of the guide plate and the cleaning of impurities. With the above cooperation, the operator can clean the guide plate regularly without affecting the static heat dissipation of the drawing oil, thereby improving the filtration stability of the drawing oil by the guide plate.

[0022] Therefore, the present invention can improve the filtration and heat dissipation effect of drawing oil. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a diagram showing the connection structure between the guide vane and the slide.

[0025] Figure 3 This is a diagram showing the connection structure between the rotating shaft and the slider of the left guide vane;

[0026] Figure 4 This is a diagram showing the connection structure between the rotating shaft and the slider of the right guide vane;

[0027] Figure 5 This is a schematic diagram of the heat dissipation component being placed in the wire drawing oil bath.

[0028] The labels in the attached diagram are as follows: 1-drawing oil tank, 2-first filtration channel, 3-second filtration channel, 4-heat dissipation tank, 5-drawing oil inlet pipe, 6-drawing oil outlet pipe, 7-lower outlet channel, 8-upper outlet channel, 9-cooling pipe, 10-guide plate, 11-guide channel, 12-slide rail, 13-slider, 14-wire groove, 15-pull rope, 16-rope clamp, 17-rotating shaft, 18-positioning key, 19-positioning groove, 20-counterweight rod, 21-pile layer, 22-fixed pulley, 23-first partition, 24-second partition, 25-operating lever, 26-rotating lever. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0030] Example. A wire drawing oil cooling supply system, configured as follows: Figure 1 As shown, the device includes a drawing oil tank 1, with a cover on top to prevent rainwater or impurities such as leaves from falling into it. The drawing oil tank 1 contains a first filter channel 2, a second filter channel 3, and a heat dissipation tank 4. The first filter channel 2 has a drawing oil inlet pipe 5, and the heat dissipation tank 4 has a drawing oil outlet pipe 6. The drawing oil outlet pipe 6 and the drawing oil inlet pipe 5 are connected to various drawing machines via a drawing oil pump to achieve circulating delivery of the drawing oil. A lower outlet channel is located at the lower end of the drawing oil tank 1 between the first filter channel 2 and the second filter channel 3. 7. An upper liquid outlet channel 8 is provided between the second filter channel 3 and the heat dissipation pool 4 at the upper end of the drawing oil pool 1. A heat dissipation component is provided on one side of the upper liquid outlet channel 8 in the heat dissipation pool 4. A cooling pipe 9 is provided between the second filter channel 3 and the heat dissipation component to connect the side wall of the heat dissipation pool 4. The heat dissipation component includes multiple guide plates 10 distributed vertically at intervals. Each guide plate 10 is inclined and the adjacent guide plates 10 partially overlap in the horizontal direction. An S-shaped guide channel 11 is formed between each guide plate 10. Multiple cooling pipes 9 are arranged side by side in the guide channel 11.

[0031] The heat dissipation pool 4 has slides 12 on both sides. The two ends of the guide plate 10 are rotatably connected to sliders 13 that are slidably connected in the slides 12. One end of the slider 13 is connected to a pull rope 15 through a U-shaped cable groove 14. The pull rope 15 is provided with a rope clamp 16 for supporting the slider 13.

[0032] The two ends of the guide plate 10 are connected to the slider 13 via the rotating shaft 17. The rotating shaft 17 is provided with a positioning key 18, and the slider 13 is provided with a positioning groove 19 that matches the positioning key 18. The guide plate 10 is provided with a counterweight rod 20 on the side away from the cooling pipe 9.

[0033] The cooling pipe 9 has a rectangular cross-sectional shape. The guide plate 10 includes an alternately arranged left guide plate and a right guide plate. The left guide plate and the right guide plate are symmetrically arranged in the direction of inclination. The end of the left guide plate extends to the bottom of the cooling pipe 9 and partially overlaps with the cooling pipe 9. The end of the right guide plate extends to the bottom of the cooling pipe 9 and partially overlaps with the cooling pipe 9.

[0034] The counterweight rod 20 is in the shape of a round tube, and the upper end of the round tube extends above the guide plate 10.

[0035] The guide plate 10 includes a mounting frame, the surface of which is provided with a waterproof membrane layer, and the surface of the waterproof membrane layer is covered with a fleece layer 21. The fleece layer 21 can be made of materials with rough surfaces, such as felt or woolen cloth, which can intercept dust in the drawing oil.

[0036] The upper end of the pull rope 15 extends to the outside of the heat dissipation pool 4 and is connected to a fixed pulley 22. The end of the pull rope 15 can be connected to a rotating drum, and the rotating drum is driven by a motor to achieve the lifting and pulling of the guide plate 10.

[0037] The cooling pipe 9 is connected to a cooling water inlet pipe and a cooling water outlet pipe at both ends, and a heat exchange mechanism can be connected to the outside of the cooling water inlet pipe and the cooling water outlet pipe.

[0038] The drawing oil tank 1 is provided with a first partition 23 and a second partition 24. A first filtration channel 2 is formed between the first partition 23 and the drawing oil tank 1, a second filtration channel 3 is formed between the first partition 23 and the second partition 24, and a heat dissipation tank 4 is formed between the second partition 24 and the drawing oil tank 1. Multiple circular bottom liquid outlet channels 7 are formed at the lower end of the first partition 23. The upper end surface of the second partition 24 is lower than the top surface of the first partition 23 and the drawing oil tank 1. An upper liquid outlet channel 8 is formed between the second partition 24 and the side wall of the drawing oil tank 1. The heat dissipation component is located in the heat dissipation tank 4 on one side of the second partition 24. The cooling pipes 9 are arranged side by side on the side wall of the second partition 24.

[0039] It also includes an operating lever 25, on which multiple rotating rods 26 are arranged side by side to cooperate with the guide plate 10. When the guide plate 10 is placed into the heat dissipation pool 4, the rotating rods 26 first drive each guide plate 10 to rotate, so that the cooling pipe 9 of the guide plate 10 is separated from each other in the horizontal direction. Then the operating lever 25 and the guide plate 10 fall into the heat dissipation pool 4 together. After the guide plate 10 is placed in place, the operating lever 25 is taken out so that the guide plate 10 is rotated and reset under the action of the counterweight rod 20 and is in a state of partial overlap with the cooling pipe 9.

[0040] The working principle of this invention is as follows: In use, drawing oil discharged from the drawing machine is pumped through the drawing oil inlet pipe 5 into the first filtration channel 2, and then along the lower outlet channel 7 into the second filtration channel 3. As the drawing oil flows, because the lower outlet channel 7 is located at the bottom of the drawing oil tank 1, lighter impurities in the oil float on the surface of the liquid in the first filtration channel 2 and cannot enter the second filtration channel 3, thus achieving the first stage of filtration. When the drawing oil enters the second filtration channel 3, it passes through the upper outlet channel 8 above the second partition 24 into the heat dissipation tank 4. This prevents heavier impurities from rising and passing through the second partition 24, causing them to settle at the bottom of the second filtration channel 3, thus achieving the second stage of filtration. With the above combination, this invention can separate impurities of different masses in the drawing oil, improving the filtration efficiency compared to existing filtration methods.

[0041] When the drawing oil enters the heat dissipation tank 4 through the upper outlet channel 8, it first flows through the cooling pipe 9 at the top of the second partition 24 into the left guide plate at the top of the heat dissipation assembly. Then, it flows obliquely downward to the right along the left guide plate and falls into the lower right guide plate. Next, it flows downward to the left along the right guide plate and falls into the lower cooling pipe 9, and then flows along the cooling pipe 9 to the lower left guide plate. In this manner, the drawing oil passes through each guide plate 10 and cooling pipe 9 in an S-shape before falling into the lower heat dissipation tank 4. Through this combination, the flow distance and flow time of the drawing oil can be extended, allowing the open-structure guide plate 10 to fully contact the outside air during the flow of the drawing oil to achieve cooling and accelerate the cooling efficiency of the drawing oil. On the other hand, by passing cooling water into the cooling pipe 9 and causing the drawing oil to flow off the surface of the cooling pipe 9, the drawing oil can be cooled multiple times using the cooling pipe 9, further accelerating the cooling efficiency of the drawing oil. This allows the drawing oil to reach a temperature of 30-40°C before entering the heat dissipation tank 4, replacing the original cooling method of static cooling within the heat dissipation tank 4 with the heat dissipation components and cooling pipe 9. In other words, even if the drawing oil is directly extracted after entering the heat dissipation tank 4, a cooling effect can still be achieved, improving the heat dissipation stability of the invention. Simultaneously, after the drawing oil flows from the surface of the guide plate 10, impurities such as copper powder and dust in the drawing oil can be intercepted within the fluff layer 21, thus achieving a third stage of filtration for the drawing oil through the fluff layer 21, further improving the filtration effect.

[0042] During operation, the positioning key 18 on the shaft 17 of the guide plate 10, under the action of the counterweight 20, is engaged with one end of the positioning groove 19, ensuring that the guide plate 10 is at a stable tilt angle and preventing rotation caused by the drawing oil. When the operator needs to remove the guide plate 10 for cleaning, they can directly wind up the pull rope 15, causing the pull rope 15 to drive each guide plate 10 to rise horizontally along the slide 12. When the guide plate 10 contacts the cooling pipe 9 during its ascent, the guide plate 10 will be pulled by the pull rope 15, causing the positioning key 18 to rotate towards the other side of the positioning groove 19, thus causing the guide plate 10 to rotate until it separates from the cooling pipe 9, allowing the guide plate 10 to be easily pulled out. After the guide plate 10 is detached from the slide rail, the operator can remove the guide plate 10 along with the slider 13 from the pull rope 15 through the cable tray 14, thereby disassembling and cleaning the guide plate 10 separately to remove dust and impurities adhering to the surface of the fluff layer 21. After the guide plate 10 is cleaned, the operator first reattaches each guide plate 10 to the pull rope 15 via the sliders 13 on both sides, and uses the rope clamp 16 to keep the guide plate 10 at a constant height after being attached, and then lowers it back into the slide rail 12. After each guide plate 10 enters the heat dissipation tank 4, the operator uses the combination of the operating rod 25 and the rotating rod 26 to lift the end of the guide plate 10 away from the cooling pipe 9, that is, to lift it until the guide plate 10 and the cooling pipe 9 are in a left-right misaligned state. After the guide plate 10 is rotated into position, it falls together with the operating rod 25, and after falling to the lowest position, it is in an alternating state with each cooling pipe 9. At this point, the operator moves and pulls out the operating lever 25, causing the guide plate 10 to rotate back to its initial state under the action of the counterweight lever 20 after losing its support, thus achieving the installation and reset of the guide plate 10.

[0043] After the drawing oil enters the heat dissipation tank 4, it is extracted from the tank 4 by the drawing oil outlet pipe 6 and sent back into the drawing machine, thus realizing the recycling of the drawing oil and providing cooling and filtration functions during use. During the use of the drawing oil tank 1, cleaning personnel can periodically remove suspended sludge floating on the surface of the first filter channel 2. Alternatively, the drawing oil in the first filter channel 2 and the second filter channel 3 can be pumped to a temporary storage tank, and the debris deposited at the bottom of the first filter channel 2 and the second filter channel 3 can be cleaned to ensure the stability of the invention after long-term use.

Claims

1. A wire drawing oil cooling supply system, characterized in that: The system includes a drawing oil tank (1), which contains a first filtration channel (2), a second filtration channel (3), and a heat dissipation tank (4). The first filtration channel (2) contains a drawing oil inlet pipe (5), and the heat dissipation tank (4) contains a drawing oil outlet pipe (6). A lower outlet channel (7) is located at the lower end of the drawing oil tank (1) between the first filtration channel (2) and the second filtration channel (3). An upper outlet channel (8) is located at the upper end of the drawing oil tank (1) between the second filtration channel (3) and the heat dissipation tank (4). A heat dissipation component is provided on one side of the liquid outlet channel (8) and located in the heat dissipation pool (4). A cooling pipe (9) connecting the side wall of the heat dissipation pool (4) is provided between the second filter channel (3) and the heat dissipation component. The heat dissipation component includes multiple guide plates (10) distributed vertically and vertically. Each guide plate (10) is inclined and the adjacent guide plates (10) partially overlap in the horizontal direction. An S-shaped guide channel (11) is formed between each guide plate (10). Multiple cooling pipes (9) are arranged side by side in the guide channel (11). The heat dissipation pool (4) has slides (12) on both sides of the sidewalls. The two ends of the guide plate (10) are rotatably connected to sliders (13) that are slidably connected in the slides (12). One end of the slider (13) is connected to a pull rope (15) through the cable groove (14). The pull rope (15) is provided with a rope clamp (16) for lifting the slider (13). The two ends of the guide plate (10) are connected to the slider (13) via the rotating shaft (17). The rotating shaft (17) is provided with a positioning key (18), and the slider (13) is provided with a positioning groove (19) that matches the positioning key (18). The guide plate (10) is provided with a counterweight rod (20) on the side away from the cooling pipe (9). The cooling tube (9) has a rectangular cross-sectional shape. The guide plate (10) includes an alternately arranged left guide plate and a right guide plate. The end of the left guide plate extends to the bottom of the cooling tube (9) and partially overlaps with the cooling tube (9). The end of the right guide plate extends to the bottom of the cooling tube (9) and partially overlaps with the cooling tube (9). The guide plate (10) includes a mounting frame, the surface of which is provided with a waterproof membrane layer, and the surface of the waterproof membrane layer is covered with a fleece layer (21). It also includes an operating lever (25), on which multiple rotating rods (26) are arranged side by side to cooperate with the guide plate (10); when the guide plate (10) is placed into the heat dissipation pool (4), the rotating rods (26) first drive each guide plate (10) to rotate, so that the guide plate (10) and the cooling pipe (9) are separated from each other in the horizontal direction. Then the operating lever (25) and the guide plate (10) fall into the heat dissipation pool (4) together. When the guide plate (10) is placed in place, the operating lever (25) is taken out so that the guide plate (10) rotates and resets under the action of the counterweight rod (20) and is in a partially overlapping state with the cooling pipe (9).

2. The wire drawing oil cooling supply system according to claim 1, characterized in that: The counterweight rod (20) is in the shape of a round tube, and the upper end of the round tube extends above the guide plate (10).

3. The wire drawing oil cooling supply system according to claim 1, characterized in that: The upper end of the pull rope (15) extends to the outside of the heat dissipation pool (4) and is connected to a fixed pulley (22).

4. The wire drawing oil cooling supply system according to claim 1, characterized in that: The cooling pipe (9) is connected to a cooling water inlet pipe and a cooling water outlet pipe at both ends.

5. The wire drawing oil cooling supply system according to claim 1, characterized in that: The drawing oil tank (1) is provided with a first partition (23) and a second partition (24). A first filtration channel (2) is formed between the first partition (23) and the drawing oil tank (1). A second filtration channel (3) is formed between the first partition (23) and the second partition (24). A heat dissipation tank (4) is formed between the second partition (24) and the drawing oil tank (1). Multiple circular holes form a lower liquid outlet channel (7) at the lower end of the first partition (23). The upper end surface of the second partition (24) is lower than the top surface of the first partition (23) and the drawing oil tank (1). An upper liquid outlet channel (8) is formed between the second partition (24) and the side wall of the drawing oil tank (1). The heat dissipation component is located in the heat dissipation tank (4) on one side of the second partition (24). The cooling pipe (9) is arranged side by side on the side wall of the second partition (24).

Images