A silicone oil coating device for halogen-free cables

Abstract

The present invention discloses a silicone oil coating device for halogen-free cables, including a spray box and a cable, a clamping structure for use with the cable is installed outside the spray box, a plurality of fixed blocks are fixedly installed inside the spray box, a refraction cover is fixedly installed between the plurality of fixed blocks, the refraction cover is elliptical, and the cable is located at the focus above the refraction cover, a plurality of circular holes are opened at the lowest point of the refraction cover, an oil collecting structure is installed inside the spray box, a high-pressure oil pipe 1 is installed inside the spray box through a rotating structure, and the high-pressure oil pipe 1 is located at the focus below the refraction cover. The advantages are: according to the law of refraction of the elliptical focus, the cable and the high-pressure nozzle are respectively arranged at two focal points to spray the cable with silicone oil, and the kinetic energy is converted into heat energy at the same time, and the capillary effect of the oil-absorbing sponge is cooperated, and the uniform coating of silicone oil on the cable is achieved according to Charles' law.

Description

Technical Field

[0001] The present invention relates to the technical field of halogen-free cable production devices, and in particular to a silicone oil coating device for halogen-free cables. Background Art

[0002] Before halogen-free cables are put into production and use, they need to be coated with silicone oil on their surface. Coating with silicone oil can significantly improve the flame retardancy, high temperature resistance, oxidation resistance and insulation performance of halogen-free cables, while reducing the impact on the environment and human health, thereby improving the safety and reliability of the cables.

[0003] The cable oiler is a device used for oil treatment of power cables. Although it has many advantages in improving the insulation performance of cables and extending the service life of cables, it also has the problem of incomplete oiling. Incomplete oiling sometimes causes the oiler to fail to completely and evenly penetrate the oil into the cable insulation layer, resulting in gaps or bubbles in the insulation layer, affecting the insulation effect.

[0004] Therefore, a novel silicone oil coating device for halogen-free cables can be used to solve the deficiencies of the prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a silicone oil coating device for a halogen-free cable.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A silicone oil coating device for halogen-free cables, comprising a spray box and a cable, wherein a clamping structure used in conjunction with the cable is installed outside the spray box, a plurality of fixed blocks are fixedly installed inside the spray box, a refraction cover is fixedly installed between the plurality of fixed blocks, the refraction cover is elliptical, and the cable is located at the focus above the refraction cover, a plurality of circular holes are opened at the lowest point of the refraction cover, an oil collecting structure is installed inside the spray box, a high-pressure oil pipe 1 is installed inside the spray box through a rotating structure, and the high-pressure oil pipe 1 is located at the focus below the refraction cover, and a plurality of high-pressure nozzles are fixedly connected to the high-pressure oil pipe 1;

[0008] An oil-absorbing sponge is installed in the refraction cover through a snap-fit ​​structure, the oil-absorbing sponge is hollow, a hollow rubber is fixedly installed in the oil-absorbing sponge, and a cable passes through the oil-absorbing sponge and is attached to the oil-absorbing sponge, the hollow rubber and the oil-absorbing sponge are both arranged with the focus above the refraction cover as the center point, and a plurality of heat-conducting rods are installed on the high-pressure oil pipe through a heat transfer structure, and the plurality of heat-conducting rods are fixedly installed on the hollow rubber and the oil-absorbing sponge.

[0009] In the above-mentioned silicone oil coating device for halogen-free cables, a through hole is provided on the spray box, and the top and one side of the spray box are both opened. A cover body is rotatably installed at the opening on one side of the spray box, and a through hole is also provided on the cover body, and the cable slides through the two through holes.

[0010] In the above-mentioned silicone oil coating device for halogen-free cables, the clamping structure includes two mounting plates fixedly mounted on one side of a spray box, both mounting plates are provided with sliding grooves, a plurality of springs are fixedly mounted in both sliding grooves, and the springs on the two mounting plates are symmetrically mounted, and a clamping assembly is commonly installed between the plurality of springs.

[0011] In the above-mentioned silicone oil coating device for halogen-free cables, the clamping assembly includes a movable frame fixedly mounted on a corresponding plurality of springs, two limiting grooves connected to the sliding grooves are opened in the two mounting plates, and protrusions sliding in the corresponding limiting grooves are arranged on the two movable frames, and limiting columns are rotatably installed on the two movable frames, and the cable slides between the two limiting columns.

[0012] In the above-mentioned silicone oil coating device for halogen-free cables, the oil collecting structure includes a collecting box fixedly installed at the bottom of a spray box, a filter is fixedly installed at the upper port of the collecting box, an oil extraction pipe is fixedly connected between the collecting box and the spray box, the upper end of the oil extraction pipe is located outside the spray box and is fixedly connected to an oil pump, and the oil pump is fixedly installed on the outside of the spray box, and an oil storage assembly is installed on the oil pump.

[0013] In the above-mentioned silicone oil coating device for halogen-free cables, the oil storage assembly includes an oil outlet pipe fixedly connected to the oil pump, the upper end of the oil outlet pipe is fixedly connected to the oil tank, the oil tank and the spray box are commonly fixedly connected by a conduit, a high-pressure oil pipe 2 is fixedly installed in the spray box, and the high-pressure oil pipe 2 is located on the extension line of the focus below the refraction cover, and the lower port of the conduit is fixedly connected to the high-pressure oil pipe 2.

[0014] In the above-mentioned silicone oil coating device for halogen-free cables, a sealing rotating ring is fixedly installed on the high-pressure oil pipe 2, and one end of the high-pressure oil pipe 1 is sealed and rotated in the sealing rotating ring.

[0015] In the above-mentioned silicone oil coating device for halogen-free cables, the rotating structure includes a motor fixedly mounted on a filter screen, a driving end of the motor is equipped with a rotating shaft through a bevel gear set, a bracket is fixedly mounted in the spray box, and the rotating shaft is rotatably mounted on the bracket, a connecting block is fixedly mounted on one end of the rotating shaft away from the bracket, and a high-pressure oil pipe is fixedly connected to the connecting block.

[0016] In the above-mentioned silicone oil coating device for halogen-free cables, the heat transfer structure includes two support rods snap-fitted into a spray box, a heat-conducting ring is fixedly installed between the two support rods, and the cable sliding sleeve is arranged in the heat-conducting ring, and a friction plate is fixedly installed at the lowest point of the heat-conducting ring.

[0017] In the above-mentioned silicone oil coating device for halogen-free cables, a fixing ring is provided on a fixing sleeve of the high-pressure oil pipe, a friction block is installed on the fixing ring through a connecting rod, and the friction block and the friction plate are used in conjunction with each other.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1: This silicone oil coating device has the advantage of preventing over-coating when coating halogen-free cables with silicone oil. Through the elliptical setting of the refraction cover, the cable and the high-pressure nozzle are respectively set at the upper and lower focal points in the refraction cover, which can cooperate with the refraction law at the elliptical focal point to achieve appropriate coating of silicone oil on the cable. At the same time, it can make the excess silicone oil on the cable drip under the action of gravity to prevent excessive coating of silicone oil on the cable.

[0020] 2: When the silicone oil coating device is applied to the halogen-free cable with silicone oil, it has the advantage of collecting and reusing the excess silicone oil. The circular hole on the refraction cover, the filter screen and the collection box are arranged in coordination, so the excess silicone oil sprayed can be collected, and the silicone oil can be prevented from splashing under the protection of the refraction cover, thereby effectively saving the resource consumption of silicone oil and avoiding the adhesion of impurities on the cable caused by soaking in silicone oil.

[0021] 3: This silicone oil coating device has the advantage of uniform coating when coating halogen-free cables with silicone oil. Through the setting of hollow rubber and oil-absorbing sponge, the porous structure of the oil-absorbing sponge can be used to quickly absorb the silicone oil, and a capillary effect is formed inside, so that the silicone oil can be quickly spread and absorbed inside, thereby achieving uniform coating of silicone oil on the cable, cooperating with the heat transfer generated by the friction between the friction block and the friction plate, and realizing the expansion of the hollow rubber according to Charles' law, driving the oil-absorbing sponge to fit closely with the cable, and improving the uniform coating effect of silicone oil.

[0022] In summary, the present invention is based on the law of refraction of elliptical focal points, and the cable and the high-pressure nozzle are respectively set at two focal points to spray silicone oil on the cable, while converting kinetic energy into thermal energy, cooperating with the capillary effect of the oil-absorbing sponge, and realizing uniform coating of silicone oil on the cable according to Charles' law. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1The present invention is a schematic structural diagram of a silicone oil coating device for a halogen-free cable.

[0025] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the spring and mounting plate.

[0027] Figure 4 It is a top view of the structure of the present invention.

[0028] Figure 5 for Figure 4 Structural cross-section view along AA direction.

[0029] Figure 6 for Figure 5 Schematic diagram of the structure.

[0030] Figure 7 It is a structural schematic diagram of the bevel gear set and the rotating shaft.

[0031] Figure 8 for Figure 7 Structural diagram of another perspective of the structure.

[0032] Fig. 9 Schematic diagram of the exploded structure inside the refraction hood.

[0033] Fig.10 It is a schematic diagram of the structure of the fixed ring and the sealing rotating ring.

[0034] Fig.11 It is a schematic diagram of the structure of friction plate and friction block.

[0035] Fig.12 It is a side view of the oil-absorbing sponge, supporting wire mesh and heat-conducting rod.

[0036] Fig.13 for Fig.12 Cross-sectional view along direction BB.

[0037] Fig.14 for Fig.13 Schematic diagram of the structure.

[0038] In the figure: 1. Spray box; 2. Cable; 3. Oil tank; 4. Limit column; 5. Conduit; 6. Refraction cover; 7. Support rod; 8. Mounting plate; 9. Oil pump; 10. Cover; 11. Spring; 12. Movable frame; 13. Filter; 14. Collecting box; 15. Motor; 16. Bevel gear set; 17. Plug-in plate; 18. Rotating shaft; 19. Bracket; 20. Connecting block; 21. High-pressure oil pipe 1; 22. High-pressure oil pipe 2; 23. High-pressure nozzle; 24. Fixed ring; 25. Sealing rotating ring; 26. Friction plate; 27. Heat-conducting ring; 28. Heat-conducting rod; 29. ​​Support wire mesh; 30. Friction block; 31. Hollow rubber; 32. Oil-absorbing sponge. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Reference Figure 1 , Figure 3 A silicone oil coating device for halogen-free cables comprises a spray box 1 and a cable 2. The top and one side of the spray box 1 are both opened. The upper opening is convenient for personnel to observe the silicone oil coating of the cable 2. A cover 10 is rotatably installed on one side of the spray box 1. The cover 10 rotates up and down relative to the spray box 1. The cover 10 is a prior art and can adopt an automatically rebounding elastic door for easy use by personnel. It can automatically rebound to fit the spray box 1, and through holes are provided on the cover 10 and the box 1. The cable 2 needs to pass through the two through holes when coated with silicone oil, and the diameters of the two through holes are larger than the diameter of the cable 2, so that the cable 2 coated with silicone oil can come into contact with the through holes, causing damage to the silicone oil coating on the surface.

[0041] Two mounting plates 8 are fixedly installed on one side of the spray box 1 (the side opposite to the cover body 10), and sliding grooves are provided on the two mounting plates 8. Multiple springs 11 are fixedly installed in the two sliding grooves, and the springs 11 on the two mounting plates 8 are symmetrically installed. A movable frame 12 is fixedly installed on the multiple springs 11 in the two mounting plates 8. Two limiting grooves connected to the sliding grooves are provided in the two mounting plates 8, and the two limiting grooves in the mounting plates 8 are arranged opposite to each other up and down. The movable frame 12 is provided with a protrusion that slides in the limiting groove, which can make the two movable frames 12 move stably in the horizontal direction in opposite directions with the cooperation of the multiple springs 11. Cylindrical grooves are provided on the two movable frames 12, and limiting columns 4 are rotatably installed in the two cylindrical grooves, and the cable 2 slides between the two limiting columns 4, and drives the two limiting columns 4 to stably clamp and fix the cable 2 under the elastic force of the multiple springs 11, so as to prevent the cable 2 from shaking when the silicone oil is applied.

[0042] Reference Figure 2 , Figure 4-Figure 6 Two fixed blocks are fixedly installed on two opposite side walls in the spray box 1, and a refraction cover 6 is fixedly installed between the multiple fixed blocks (the refraction cover 6 and the two fixed blocks are integrally formed, which is for ease of understanding here), and the refraction cover 6 is elliptical, and the two foci of the refraction cover 6 are arranged up and down and are located on a vertical line, and the cable 2 passes through the refraction cover 6 and is located at the focus above the refraction cover 6, and a plurality of circular holes are opened on the lower surface of the refraction cover 6, and the plurality of circular holes can enable excess silicone oil to be quickly discharged from the refraction cover 6 through the plurality of circular holes during coating.

[0043] A collecting box 14 is fixedly installed in the spray box 1, and the top of the collecting box 14 is an opening, and the length and width of the collecting box 14 are the same as the dimensions inside the spray box 1, and a filter screen 13 is fixedly installed at the opening above the collecting box 14, and the size of the filter screen 13 is also the same as the dimensions inside the spray box 1; an oil extraction pipe is fixedly connected between the spray box 1 and the collecting box 14, and the upper end of the oil extraction pipe is located outside the spray box 1 and is fixedly connected to an oil pump 9, and the oil pump 9 is fixedly installed on the outside of the spray box 1, and an oil outlet pipe is fixedly connected to the oil pump 9, and the upper end of the oil outlet pipe is fixedly connected to the oil tank 3, and a conduit 5 is fixedly connected between the oil tank 3 and the spray box 1, and a high-pressure oil pipe 22 is fixedly installed in the spray box 1, and the part where the high-pressure oil pipe 22 is fixed to the spray box 1 is sealed, and the other end is an opening, and the high-pressure oil pipe 22 is located on the extension line of the focus below the refraction cover 6, and the lower port of the conduit 5 is fixedly connected to the high-pressure oil pipe 22.

[0044] An oil filling hole is provided on the oil tank 3, and a plug (not shown in the figure) can be snapped and installed on the oil filling hole, so that silicone oil can be added to the oil tank 3 through the oil filling hole. At the same time, excess silicone oil in the refraction cover 6 enters the collection box 14 through multiple circular holes and is filtered by the filter screen 13 under the action of gravity, and the oil extraction pipe is fixedly connected to the lower part of the collection box 14, which can prevent the silicone oil in the collection box 14 from accumulating at the bottom of the collection box 14. By turning on the oil pump 9, the silicone oil in the collection box 14 can be pumped into the oil tank 3 through the oil extraction pipe, and the oil extraction pipe and the oil outlet pipe are both one-way pipes, which can only pump the silicone oil in the collection box 14 into the oil tank 3, preventing the oil in the oil tank 3 from flowing downward into the oil pump 9. This process can reduce the waste caused by excess silicone oil. At the same time, with the setting of the refraction cover 6, the excess silicone oil can be effectively drained to prevent it from splashing.

[0045] Reference Figure 7 , Fig.10 as well as Fig.11 A bracket 19 is fixedly installed in the spray box 1, and a rotating shaft 18 is rotatably installed on the bracket 19. A motor 15 is installed on the rotating shaft 18 through a bevel gear set 16. A shielding cover is fixedly installed outside the motor 15, and the shielding cover is fixedly installed on the filter screen 13. Because the rotation setting of the cover body 10 requires the bevel gear set 16 to transmit, so as to prevent the removal of the internal structure of the spray box 1 from being affected; the bevel gear set 16 includes a bevel gear 1 fixedly installed on the rotating shaft 18, and the driving end of the motor 15 is fixedly installed with a bevel gear meshing with the bevel gear 1. Bevel gear 2, a connecting block 20 is fixedly installed on the end of the rotating shaft 18 away from the bracket 19, a high-pressure oil pipe 21 is fixedly installed on the connecting block 20, a plurality of high-pressure nozzles 23 are fixedly connected to the high-pressure oil pipe 21, and the plurality of high-pressure nozzles 23 are evenly arranged, a fixing ring 24 is fixedly installed on the end of the high-pressure oil pipe 21 away from the connecting block 20, a sealing rotating ring 25 is fixedly installed on one end of the high-pressure oil pipe 22, and the end of the high-pressure oil pipe 21 away from the connecting block 20 is sealed and rotated in the sealing rotating ring 25.

[0046] By setting the high-pressure nozzle 23, the cable 2 can be spray-coated with silicone oil to prevent the cable 2 from adhering to impurities when it is immersed in silicone oil (the silicone oil will be reused during immersion, dust may adhere to the cable 2, and the dust will enter the reused silicone oil). At the same time, the cleanliness of the inside of the spray box 1 can be ensured, and the coating effect of the silicone oil on the cable 2 can be improved.

[0047] When the motor 15 is turned on, the rotating shaft 18 can be driven to rotate through the bevel gear set 16. The rotation of the rotating shaft 18 drives the high-pressure oil pipe 21 to rotate through the connecting block 20. The motor 15 adopts a servo motor, and its rotation angle range is set between 90° and 120°. It can drive the multiple high-pressure nozzles 23 on the high-pressure oil pipe 21 to reciprocate within the angle range. Due to the law of elliptical refraction, the rays ejected from one of the foci of the ellipse can be reflected on the inner wall of the refraction cover 6 and will be refracted again through another focus. In combination with setting the high-pressure oil pipe 21 at the focus below the refraction cover 6, the sprayed silicone oil can be refracted and fall on the cable 2, and drip under the action of gravity, thereby improving the uniformity of silicone oil spraying.

[0048] Reference Figure 6 , Figure 8-Figure 14 , installation grooves are provided on the inner walls on both sides of the spray box 1, and support rods 7 are slidably installed in the two installation grooves. A heat-conducting ring 27 is fixedly installed between the two support rods 7, and the inner diameter of the heat-conducting ring 27 is equal to the diameter of the cable 2, so that the cable 2 can come into contact with the heat-conducting ring 27 when it rotates, and the two support rods 7 are made of rubber material, which can increase the friction between the installation grooves. When the cable 2 is sprayed, the two support rods 7 can be pulled upward to drive the heat-conducting ring 27 out of the spray box 1, and the spray box 1 can be cleaned; at the same time, the installation groove can be set to a groove body with a convex end face, and the two support rods 7 can be set to a shape used with the installation groove (not shown in the figure), which can more effectively prevent the heat-conducting ring 27 from rotating.

[0049] A connecting rod is fixedly installed on the fixing ring 24, and a friction block 30 is fixedly installed on the upper end of the connecting rod. A friction plate 26 is fixedly installed at the lowest point of the heat-conducting ring 27, and the friction plate 26 and the friction block 30 are used in a close fit. A plurality of circular grooves are opened on the heat-conducting ring 27, and the plurality of circular grooves are evenly arranged, and a heat-conducting rod 28 is clamped and installed in each circular groove. An annularly arranged oil-absorbing sponge 32 is fixedly installed on the plurality of heat-conducting rods 28. The interior of the oil-absorbing sponge 32 is hollow, and an annularly arranged hollow rubber 31 is fixedly installed inside the oil-absorbing sponge 32. The plurality of heat-conducting rods 28 penetrate the fixed hollow rubber 31, and the outer periphery of the oil-absorbing sponge 32 is A supporting steel mesh 29 is fixedly installed, and plug-in plates 17 are symmetrically fixedly installed on both sides of the supporting steel mesh 29. Two engaging grooves are provided in the refraction cover 6, and the two plug-in plates 17 are both engaged in the corresponding engaging grooves. A plurality of leakage holes are evenly provided on the surface of the supporting steel mesh 29. The supporting steel mesh 29, the hollow rubber 31 and the oil-absorbing sponge 32 are arranged with the focus above the refraction cover 6 as the center of the circle, and in the initial state, the cable 2 passes through the oil-absorbing sponge 32 and is in contact with the oil-absorbing sponge 32. For cables 2 of different sizes, different oil-absorbing sponges 32 and hollow rubbers 31 can be replaced to ensure that the inner wall of the oil-absorbing sponge 32 is in contact with the cable 2.

[0050] When the high-pressure nozzle 23 sprays silicone oil, it can be evenly reflected on the supporting steel mesh 29 under the action of the refraction cover 6, and enter the oil-absorbing sponge 32 through the leakage holes on the supporting steel mesh 29. There are many tiny gaps on the oil-absorbing sponge 32. These tiny pores can quickly absorb and store silicone oil. This porous structure allows the oil-absorbing sponge 32 to have a large surface area, thereby increasing the chance of contact with silicone oil and accelerating the oil absorption speed. At the same time, the surface tension of the oil-absorbing sponge 32 is low, and the silicone oil can be quickly adsorbed to its surface, and a capillary effect is formed inside, so that the silicone oil can quickly spread and be absorbed inside, thereby achieving uniform coating of silicone oil on the cable 2.

[0051] When the high-pressure oil pipe 21 rotates, it can drive the fixed ring 24 and the connecting rod to drive the friction block 30 to swing back and forth, and the friction plate 26 is set in a semi-arc shape with an arc of 120°, which can effectively transfer the heat generated by the friction of the friction block 30 to the heat-conducting ring 27, and transfer it to the inside of the hollow rubber 31 through multiple heat-conducting rods 28. The heat in the hollow rubber 31 increases, and its internal pressure increases. According to Charles' law (the relationship between pressure and temperature when the volume is the same): for a certain mass of gas, when the volume remains unchanged, the increase (or decrease) in pressure for every 1°C increase (or decrease) in temperature is equal to 1 / 273 of its pressure at 0°C. The specific formula is: (Pt-P0) / t=P0 / 273 or Pt=P0(1+t / 273) or P1 / T1=P2 / T2; As a result, the hollow rubber 31 expands, driving the oil-absorbing sponge 32 to fit more closely to the cable 2, thereby increasing the fitting force between the oil-absorbing sponge 32 and the cable 2. The oil-absorbing sponge 32 can be lightly pressed to increase the contact area between the sponge 32 and the cable 2, thereby improving the uniformity of the silicone oil coating on the cable 2. By adjusting the rotation speed of the motor 15, the relative rotation speed between the friction block 30 and the friction plate 26 can be adjusted, thereby adjusting the required temperature increase.

[0052] When the spray box 1 needs to be cleaned, or the size of the supporting wire mesh 29, hollow rubber 31, oil-absorbing sponge 32 and multiple heat-conducting rods 28 needs to be replaced, the cover 10 is rotated to separate it from the spray box 1, and the two plug-in plates 17 are pulled outward by hand to take the supporting wire mesh 29, hollow rubber 31, oil-absorbing sponge 32 and multiple heat-conducting rods 28 out of the spray box 1 to perform the required operations.

[0053] The specific operation steps of this device are as follows:

[0054] First, the cable 2 is passed through the two limit posts 4 and inserted into the spray box 1 through the through hole on one side of the spray box 1. Then, the cable 2 is passed through the heat conductive ring 27 and the oil absorbing sponge 32 in sequence, and finally passes through the through hole on the cover 10.

[0055] When oiling, start the motor 15, and the driving end of the motor 15 drives the rotating shaft 18 to rotate through the bevel gear set 16. The rotation of the rotating shaft 18 drives the high-pressure oil pipe 21 to rotate through the connecting block 20. The rotation of the high-pressure oil pipe 21 will drive the high-pressure nozzle 23 to rotate, so that the high-pressure nozzle 23 can make reciprocating rotation within a certain angle. At the same time, the high-pressure nozzle 23 is coordinated to spray oil into the refraction cover 6. Since the refraction cover 6 adopts an elliptical design, when the high-pressure nozzle 23 rotates, the oil sprayed from the high-pressure nozzle 23 will be reflected to the heat-conducting rod 28 in the supporting wire mesh 29 through the sputtering of the inner wall of the refraction cover 6. This can effectively reduce the loss of oil and make the oil on the heat-conducting rod 28 more uniform, so that the cable 2 is oiled through the heat-conducting rod 28.

[0056] Oil transportation: The oil in the oil tank 3 is transported to the high-pressure oil pipe 22 through the conduit 5 by the oil pump 9.

[0057] The oil located on the inner wall of the refraction cover 6 without being reflected will fall onto the filter screen 13 through the circular hole provided at the bottom of the refraction cover 6 , and will be filtered by the filter screen 13 and collected in the collection box 14 .

[0058] As the high-pressure oil pipe 21 rotates, the fixed ring 24 is driven to rotate, and the rotation of the fixed ring 24 is driven to rotate the friction block 30, so that the friction block 30 slides relatively on the friction plate 26. The sliding friction generates heat, and the generated heat is transmitted to the heat-conducting rod 28 through the heat-conducting ring 27. The heat-conducting rod 28 extends into the hollow rubber 31, so that the temperature inside the hollow rubber 31 can be increased. When the temperature rises, the hollow rubber 31 expands. After the hollow rubber 31 expands, the oil-absorbing sponge 32 and the cable 2 fit more closely, thereby increasing the pressing force between the oil-absorbing sponge 32 and the cable 2, making the oiling efficiency higher and reducing the probability of incomplete oiling.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A silicone oil coating device for a halogen-free cable, comprising a spray box (1) and a cable (2), characterized in that: The spray box (1) is provided with a clamping structure for use with the cable (2) on the outside, a plurality of fixed blocks are fixedly installed in the spray box (1), a refraction cover (6) is fixedly installed between the plurality of fixed blocks, the refraction cover (6) is elliptical, the cable (2) is located at the focus of the upper part of the refraction cover (6), a plurality of circular holes are provided at the lowest point of the refraction cover (6), an oil collecting structure is installed in the spray box (1), a high-pressure oil pipe (21) is installed in the spray box (1) via a rotating structure, the high-pressure oil pipe (21) is located at the focus below the refraction cover (6), and a plurality of high-pressure nozzles (23) are fixedly connected to the high-pressure oil pipe (21); An oil-absorbing sponge (32) is installed in the refraction cover (6) via a snap-fit ​​structure, the oil-absorbing sponge (32) is hollow, a hollow rubber (31) is fixedly installed in the oil-absorbing sponge (32), and the cable (2) passes through the oil-absorbing sponge (32) and is in contact with the oil-absorbing sponge (32), the hollow rubber (31) and the oil-absorbing sponge (32) are both arranged with the focus above the refraction cover (6) as the center point, and a plurality of heat-conducting rods (28) are installed on the high-pressure oil pipe (21) via a heat transfer structure, and the plurality of heat-conducting rods (28) are fixedly installed on the hollow rubber (31) and the oil-absorbing sponge (32); The oil collecting structure comprises a collecting box (14) fixedly mounted on the bottom of the spray box (1), a filter screen (13) fixedly mounted on the upper port of the collecting box (14), an oil extraction pipe fixedly connected between the collecting box (14) and the spray box (1), the upper end of the oil extraction pipe is located outside the spray box (1) and fixedly connected to an oil pump (9), and the oil pump (9) is fixedly mounted on the outside of the spray box (1), and an oil storage assembly is mounted on the oil pump (9); The oil storage assembly comprises an oil outlet pipe fixedly connected to the oil pump (9), the upper end of the oil outlet pipe is fixedly connected to the oil tank (3), a conduit (5) is fixedly connected between the oil tank (3) and the spray box (1), a second high-pressure oil pipe (22) is fixedly installed in the spray box (1), and the second high-pressure oil pipe (22) is located on the extension line of the focus below the refraction cover (6), and the lower end of the conduit (5) is fixedly connected to the second high-pressure oil pipe (22); A sealing rotating ring (25) is fixedly mounted on the high-pressure oil pipe No. 2 (22), and one end of the high-pressure oil pipe No. 1 (21) is sealed and rotated in the sealing rotating ring (25); The heat transfer structure comprises two support rods (7) mounted in a spray box (1), a heat conduction ring (27) being fixedly mounted between the two support rods (7), and the cable (2) being slidably sleeved in the heat conduction ring (27), and a friction plate (26) being fixedly mounted at the lowest point of the heat conduction ring (27); A fixing ring (24) is provided on the fixing sleeve of the high-pressure oil pipe (21), a friction block (30) is mounted on the fixing ring (24) via a connecting rod, and the friction block (30) and the friction plate (26) are used in close contact with each other.

2. The silicone oil coating device for halogen-free cables according to claim 1, characterized in that: The spray box (1) is provided with a through hole, and the top and one side of the spray box (1) are both opened. A cover body (10) is rotatably mounted at the opening on one side of the spray box (1), and the cover body (10) is also provided with a through hole, and the cable (2) passes through and slides in the two through holes.

3. The silicone oil coating device for halogen-free cables according to claim 1, characterized in that: The clamping structure comprises two mounting plates (8) fixedly mounted on one side of the spray box (1), the two mounting plates (8) being provided with sliding grooves, a plurality of springs (11) being fixedly mounted in the two sliding grooves, the springs (11) on the two mounting plates (8) being symmetrically mounted, and a clamping assembly being mounted between the plurality of springs (11).

4. The silicone oil coating device for halogen-free cables according to claim 3, characterized in that: The clamping assembly comprises a movable frame (12) fixedly mounted on a corresponding plurality of springs (11); two limit slots connected to the sliding slots are provided in the two mounting plates (8); protrusions sliding in the corresponding limit slots are provided on the two movable frames (12); limit posts (4) are rotatably mounted on the two movable frames (12), and the cable (2) slides between the two limit posts (4).

5. The silicone oil coating device for halogen-free cables according to claim 1, characterized in that: The rotating structure comprises a motor (15) fixedly mounted on the filter (13); a driving end of the motor (15) is mounted with a rotating shaft (18) via a bevel gear set (16); a bracket (19) is fixedly mounted in the spray box (1), and the rotating shaft (18) is rotatably mounted on the bracket (19); a connecting block (20) is fixedly mounted on one end of the rotating shaft (18) away from the bracket (19), and a high-pressure oil pipe (21) is fixedly connected to the connecting block (20).

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