High-voltage cable graphite coating device

Abstract

The high-voltage cable graphite coating device comprises a discharging device, a coarse coating device and a fine coating device which are sequentially arranged, the discharging device comprises a stirring barrel, a bottom outlet of the stirring barrel is connected with a feeding port of a screw pump, a discharging port of the screw pump is connected with a discharging pipe, a discharging hole is formed in the bottom of the discharging pipe, and the screw pump is connected with a first motor; a conveyed cable is arranged on the lower side of the discharging hole, and the cable sequentially penetrates through the coarse smearing device and the fine smearing device after passing through the lower side of the discharging hole. Graphite can be better smeared evenly and cannot drift away after being mixed with water, the situation that a working site is full of dust like traditional equipment is avoided, the product quality is guaranteed, and meanwhile potential safety hazards are eliminated.

Description

Technical Field

[0001] The invention relates to the field of cable production machinery, and in particular to a high-voltage cable graphite coating device. Background Art

[0002] Graphite coating is the last and essential step in the production process of high-voltage cables. In the past, graphite coating equipment generally used dry graphite powder for coating. Even if the coating room was closed, it could not prevent the graphite powder from floating around, resulting in dust all over the work site, and the ground was very slippery, which often caused people to slip. In addition, the coating effect was not good for cables of different diameters. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-voltage cable graphite coating device which is safer in graphite coating and can better adapt to cables with different diameters.

[0004] In order to solve the above technical problems, the present invention includes a discharging device, a coarse coating device and a fine coating device which are arranged in sequence. The discharging device includes a stirring barrel, the bottom outlet of the stirring barrel is connected to the feed port of the screw pump, the discharge port of the screw pump is connected to the discharging pipe, a discharging hole is opened at the bottom of the discharging pipe, the screw pump is connected to the first motor, and a transported cable is provided on the lower side of the discharging hole. After passing through the lower side of the discharging hole, the cable passes through the coarse coating device and the fine coating device in sequence.

[0005] In a preferred embodiment, the coarse coating device includes a first rotating drum, the inner wall of which is provided with a plurality of evenly distributed cylinders facing the center, the ends of the telescopic rods of the cylinders are all equipped with thread rolling plates, and the outer side of the first rotating drum is connected to the second motor through a gear transmission structure.

[0006] In order to achieve an even initial coating, a sponge layer is placed on the side of the wire rubbing board facing the cable.

[0007] In order to achieve more precise and uniform smearing, the fine smearing device includes a second rotating drum, the outer side of the second rotating drum is connected to the third motor through a gear transmission structure, a spring coil is arranged at the central axis position inside the second rotating drum, and both ends of the spring coil are connected to a distance adjusting device, through which the length of the spring coil can be adjusted.

[0008] Preferably, the distance adjusting device includes movable rod ends of an elastic telescopic rod respectively connected to both ends of the spring coil, and the fixed rod end of the elastic telescopic rod is connected to a slider of a guide rail assembly arranged along the length direction of the inner side wall of the second rotating cylinder. An electric push rod that can push the slider to move is arranged on the guide rail of the guide rail assembly, and the lateral distance between the two ends of the spring coil is adjusted by the cooperation of the two electric push rods.

[0009] In order to spread the graphite emulsion on the surface more evenly, a braided layer is provided on the surface of the spring coil.

[0010] In order to facilitate maintenance and replacement, both ends of the spring ring and the corresponding movable rod ends of the elastic telescopic rod are installed in a detachable manner.

[0011] Preferably, ball sockets are fixedly provided at both ends of the spring coil, a ball head is provided in the ball socket, the outer side of the ball head is fixedly connected to the bracket, and the bracket is connected to the movable rod end of the corresponding elastic telescopic rod by bolts.

[0012] Preferably, the spring ring is made of elastic plastic material.

[0013] Furthermore, the gear transmission structure includes a driving gear and a gear ring. The driving gear is installed on the output shafts of the second motor and the third motor. The gear ring is fixedly installed on the outer rings of the first rotating drum and the second rotating drum. The driving gear meshes with the corresponding gear ring.

[0014] To sum up, when the present invention is used, the discharge device is first used to extrude the evenly stirred graphite emulsion in the mixing barrel from the discharge hole through the screw pump and drip it onto the upper surface of the passing cable, and then the graphite on the surface is preliminarily spread evenly through the wire rubbing plate of the coarse coating device. The fine coating device can adjust the size of the inner diameter of the spring coil to adapt to cables of different diameters, so that the spring coil can embrace the cable, and the embracing coating can be achieved, which can better spread the graphite evenly. The graphite will not float after mixing with water, and the work site is no longer full of dust like traditional equipment. While ensuring product quality, it also eliminates safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figure 1 It is a partial structural schematic diagram of the discharging device and the rough coating device of the present invention; Figure 2 It is a schematic diagram of the structure of the fine coating device and the cable of the present invention; Figure 3 for Figure 2 A partial enlarged view of part I. DETAILED DESCRIPTION

[0016] Referring to the accompanying drawings, the high-voltage cable graphite coating device includes a discharging device, a coarse coating device and a fine coating device which are arranged in sequence. The discharging device includes a stirring barrel 1, the bottom outlet of the stirring barrel 1 is connected to the feed port of the screw pump 2, the discharge port of the screw pump 2 is connected to the discharge pipe 3, a discharge hole 4 is opened at the bottom of the discharge pipe, the screw pump 2 is connected to the first motor 5, and a transported cable 17 is provided on the lower side of the discharge hole. After passing through the lower side of the discharge hole, the cable passes through the coarse coating device and the fine coating device in sequence. The discharging device squeezes the graphite emulsion stirred evenly in the stirring barrel from the discharge hole through the screw pump and drips it onto the upper surface of the passing cable. Then the cable passes through the coarse coating device to preliminarily and evenly coat the graphite emulsion on the surface, and then passes through the fine coating device for more fine coating, so that the thickness of the graphite coating on the cable surface is uniform.

[0017] The rough coating device includes a first rotating drum 6, the inner wall of which is provided with a plurality of evenly distributed cylinders 7 facing the center, the ends of the telescopic rods of the cylinders 7 are fixedly installed with wire rubbing plates 8, a sponge layer is provided on the surface of the wire rubbing plates facing the cable, and the outer side of the first rotating drum is connected to the second motor through a gear transmission structure. When in use, the contact between the sponge layer and the cable surface is ensured by the elongation of the cylinders, and the second motor drives the first rotating drum to rotate rapidly, and rotates around the cable surface through the sponge layer, so that the graphite emulsion dripped onto the cable surface is initially evenly coated.

[0018] The fine coating device includes a second rotating drum 9, the outer side of the second rotating drum is connected to the third motor through a gear transmission structure, a spring coil 10 is arranged at the central axis position in the second rotating drum, and the two ends of the spring coil 10 are connected to the distance adjusting device, and the length of the spring coil can be adjusted by the distance adjusting device. The distance adjusting device includes movable rod ends of an elastic telescopic rod 11 respectively connected to the two ends of the spring coil 10, and the fixed rod end of the elastic telescopic rod is connected to the slider of the guide rail assembly arranged along the length direction of the inner wall of the second rotating drum, and an electric push rod 12 that can push the slider to move is arranged on the guide rail of the guide rail assembly. The lateral distance between the two ends of the spring coil 10 can be adjusted by the cooperation of the two electric push rods. When the lateral distance increases, the pitch of the spring coil increases and the diameter becomes smaller. At this time, the inner circle of the spring coil is attached to the surface of the cable, and the surface of the spring coil is provided with a braided layer. Through the above design, the size of the inner diameter of the spring coil can be adjusted to adapt to cables of different diameters, and the posture of the spring coil embracing the cable is realized. The graphite emulsion on the surface can be better and more evenly coated through the braided layer.

[0019] Both ends of the spring coil and the corresponding movable rod end of the elastic telescopic rod are installed in a detachable manner. This design facilitates the replacement of the spring coil. In a specific manner, both ends of the spring coil are fixedly provided with ball sockets 13, a ball head 14 is provided in the ball socket 13, and the outer side of the ball head is fixedly connected to a bracket 18, and the bracket is connected to the movable rod end of the corresponding elastic telescopic rod by bolts.

[0020] One option for the spring coil is to use an elastic plastic material, which is cheap and has a high fatigue resistance.

[0021] One of the options for spring coils is to use elastic metal material, which is a common choice of material for springs. The manufacturing process is relatively mature, and the strength itself is relatively high, and it can better maintain its own shape.

[0022] The gear transmission structure includes a driving gear 15 and a ring gear 16. The driving gear is mounted on the output shafts of the second motor and the third motor. The ring gear 16 is fixedly mounted on the outer rings of the first drum and the second drum. The driving gear meshes with the corresponding ring gear 16.

[0023] A stirring device is arranged in the stirring barrel, which can stir the graphite powder and water added into the stirring barrel evenly.

[0024] Working principle: When in use, first use the discharging device to squeeze the evenly stirred graphite emulsion in the mixing barrel from the discharging hole through the screw pump and drip it onto the upper surface of the passing cable, and then use the wire rubbing plate of the coarse coating device to preliminarily spread the graphite on the surface. The fine coating device can adjust the size of the inner diameter of the spring coil to adapt to cables of different diameters, so that the spring coil can embrace the cable and realize the embracing coating, which can better spread the graphite. After mixing with water, the graphite will not float away. The work site is no longer full of dust like traditional equipment. While ensuring product quality, it also eliminates safety hazards.

[0025] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A high voltage cable graphite coating device, characterized in that: It includes a discharging device, a coarse coating device and a fine coating device which are arranged in sequence. The discharging device includes a stirring barrel. The bottom outlet of the stirring barrel is connected to the feed port of the screw pump. The discharge port of the screw pump is connected to a discharging pipe. A discharging hole is provided at the bottom of the discharging pipe. The screw pump is connected to a first motor. A transported cable is provided at the lower side of the discharging hole. After passing through the lower side of the discharging hole, the cable passes through the coarse coating device and the fine coating device in sequence.

2. A high voltage cable graphite coating device as claimed in claim 1, characterized in that : The coarse coating device includes a first rotating drum, the inner wall of which is provided with a plurality of evenly distributed cylinders facing the center, the ends of the telescopic rods of the cylinders are all equipped with thread rubbing plates, and the outer side of the first rotating drum is connected to the second motor through a gear transmission structure.

3. A high voltage cable graphite coating device as claimed in claim 2, characterized in that : A sponge layer is provided on the side of the rubbing board facing the cable.

4. A high voltage cable graphite coating device as claimed in claim 1, characterized in that : The fine coating device includes a second rotating drum, the outer side of the second rotating drum is connected to the third motor through a gear transmission structure, a spring coil is arranged at the central axis position in the second rotating drum, both ends of the spring coil are connected to a distance adjusting device, and the length of the spring coil can be adjusted by the distance adjusting device.

5. A high voltage cable graphite coating device as claimed in claim 4, characterized in that : The distance adjusting device includes movable rod ends of an elastic telescopic rod respectively connected to both ends of a spring coil, and the fixed rod end of the elastic telescopic rod is connected to a slider of a guide rail assembly arranged along the length direction of the inner wall of the second rotating cylinder. An electric push rod that can push the slider to move is arranged on the guide rail of the guide rail assembly, and the lateral distance between the two ends of the spring coil is adjusted by the cooperation of the two electric push rods.

6. A high voltage cable graphite coating device as claimed in claim 5, characterized in that : The surface of the spring coil is provided with a braided layer.

7. A high voltage cable graphite coating device as claimed in claim 5, characterized in that : Both ends of the spring ring and the corresponding movable rod ends of the elastic telescopic rod are installed in a detachable manner.

8. A high voltage cable graphite coating device as claimed in claim 7, characterized in that : Ball sockets are fixedly arranged at both ends of the spring ring, a ball head is arranged in the ball socket, the outer side of the ball head is fixedly connected to the bracket, and the bracket is connected to the movable rod end of the corresponding elastic telescopic rod through bolts.

9. A high voltage cable graphite coating device as claimed in claim 5, characterized in that : The spring ring is made of elastic plastic.

10. A high voltage cable graphite coating device as claimed in claim 2 or 4, characterized in that : The gear transmission structure includes a driving gear and a gear ring. The driving gear is installed on the output shafts of the second motor and the third motor. The gear ring is fixedly installed on the outer rings of the first rotating drum and the second rotating drum. The driving gear is meshed with the corresponding gear ring.

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