A cable production drying device

Abstract

This invention belongs to the field of power distribution equipment manufacturing technology, and specifically relates to a cable production drying device, including a base and a PLC controller. A support plate is fixed to the upper rear side of the base, and multiple guide wheels are rotatably connected to the support plate. Cable bodies are conveyed on these guide wheels, which sequentially divide the cable body's conveying path into a horizontal section one, an inclined section, a vertical section, and a horizontal section two. This invention achieves efficient and low-consumption water removal through multi-stage drying. The spiral water blowing eliminates dead angles, the wiping components can self-clean online for long-term stability, and the V-shaped hollow hot air disc combined with negative pressure ventilation ensures uniform and efficient drying without damaging the insulation. Overall, the drying is thorough, energy consumption is low, and production is continuous and stable.

Description

Technical Field

[0001] This invention belongs to the field of power distribution equipment manufacturing technology, and in particular relates to a cable production drying device. Background Technology

[0002] In the field of DC converter transformer manufacturing, cross-linked polyethylene (XLPE) insulated power cables are the key carriers of core insulation components such as valve-side leads and neutral point leads. Their insulation performance directly determines the overall safety and stability of ultra-high voltage DC transmission projects. After the insulation layer of XLPE insulated power cables is extruded and cross-linked, it must be immediately subjected to forced cooling and shaping in a water-cooling tank. This is a core process to ensure that the degree of cross-linking of XLPE molecules meets the standards, the geometric accuracy of the insulation layer, and the stability of its mechanical and physical properties (such as tensile strength and elongation at break).

[0003] However, after water cooling, a large amount of free water will adhere to the surface of the cable. At the same time, moisture will accumulate in the gaps of the stranded conductors and the recesses of the insulation layer. If this residual moisture is not completely removed, it will affect subsequent processing. Surface moisture will cause the cable printing to become blurry and the adhesion to be poor, making it impossible to directly roll and package. Moreover, residual moisture will reduce the resistivity of the insulation layer and increase dielectric loss. Long-term operation may cause partial discharge or even insulation breakdown.

[0004] Currently, the common method for dewatering cables is to use fixed sponge rollers for wiping. However, once the sponge is saturated with water, it will cause backflow. The wiping effect decreases significantly with the extension of working time, and frequent machine stops are required to replace the sponge rollers, which seriously affects production efficiency. Another method is to use a hot air box for drying. This method is extremely energy-intensive (accounting for more than 90% of the total energy consumption of the drying process), and the rapid evaporation of surface moisture can easily form a dense water film, which hinders the diffusion of shallow moisture in the insulation layer, resulting in incomplete drying. In order to ensure the drying effect, it is often necessary to increase the drying temperature or extend the drying time, which will cause the insulation material to overheat and age. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a cable production drying apparatus.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cable production drying device, comprising a base and a PLC controller, wherein a support plate is fixed to the upper rear side of the base, and a plurality of guide wheels are rotatably connected to the support plate, wherein a cable body is conveyed on the plurality of guide wheels, and the plurality of guide wheels divide the conveying path of the cable body into a horizontal section one, an inclined section, a vertical section and a horizontal section two in sequence; and further comprising a knocking water removal component, a spiral water blowing component, a wiping water removal component and a drying component arranged in sequence along the conveying direction of the cable body;

[0007] The tapping water removal component is located below the horizontal section of the cable body and is used to perform high-frequency vibration tapping on the cable body to remove large free water droplets on the surface.

[0008] The spiral water blowing assembly is sleeved on the outside of the inclined section of the cable body to generate a rotating spiral airflow to peel off the residual water film on the cable surface and the water accumulated in the twisted gaps.

[0009] The wiping and dehumidifying component is sleeved on the outside of the vertical section of the cable body to adsorb microscopic water film and moisture on the cable surface.

[0010] The drying component is located at the second horizontal section of the cable body and is used to remove shallow moisture that has seeped into the cable insulation layer, thus completing the final drying.

[0011] The wiping and water-removing assembly is also equipped with an online self-cleaning component, which is used to dehydrate and dry the wiping elements in real time to ensure continuous wiping effect.

[0012] In the above-mentioned cable production drying device, the knocking dehydration assembly includes a power housing fixed on the base, a knocking rod movably inserted into the top of the power housing, a knocking wheel fixed to the top of the knocking rod, and the knocking wheel abutting against the lower side of the corresponding horizontal segment one of the cable body.

[0013] A force-bearing plate is fixed to the bottom of the striking rod. A return spring sleeved on the outside of the striking rod is fixed between the upper end of the force-bearing plate and the top of the inner wall of the power housing. A force-bearing permanent magnet plate is fixed to the lower end of the force-bearing plate. An amplifying electromagnetic plate is fixed to the bottom of the inner wall of the power housing, which is opposite to the force-bearing permanent magnet plate. The amplifying electromagnetic plate is electrically connected to the PLC controller.

[0014] In the above-mentioned cable production drying device, the spiral water blowing assembly includes a positioning plate fixed on the upper end of the base. The positioning plate has a through hole, and a hollow air supply cylinder is fixedly sleeved in the corresponding through hole. The front end of the hollow air supply cylinder is rotatably connected to a hollow rotating cylinder through a double bearing sealing structure. The hollow rotating cylinder and the hollow air supply cylinder are coaxially arranged and form a communicating air cavity inside.

[0015] The front end of the hollow rotating cylinder is uniformly and fixedly connected with multiple air jets. The air jets are inclined toward the cable body, with an angle of 30° to 45° with the cable axis, and are in the opposite direction to the cable conveying direction.

[0016] The positioning plate is fixed with a motor rotation assembly for driving the hollow rotating cylinder to rotate. The rear end of the hollow air supply cylinder is fixedly connected to an air supply pipe. An air supply pump fixed on the positioning plate is installed on the air supply pipe. The air supply pump is electrically connected to the PLC controller.

[0017] In the aforementioned cable production drying device, the dual-bearing sealing structure includes a bearing mounting step disposed on the inner wall of the front end of the hollow air supply cylinder. Two deep groove ball bearings are mounted face-to-face on the bearing mounting step. The outer wall of the rear end of the hollow rotating cylinder is interference-fitted with the inner rings of the two deep groove ball bearings. An annular sealing groove is provided on the inner side of the two deep groove ball bearings. A PTFE sealing ring is installed in the annular sealing groove. A dustproof end cap is also fixed to the front end of the hollow air supply cylinder.

[0018] In the above-mentioned cable production drying device, the wiping and dehydration assembly includes a mounting plate fixed to the upper end of the base. Two sets of electric push rods are symmetrically fixed to the upper and lower sides of the mounting plate, and each set of electric push rods has a mounting block fixed to its moving end.

[0019] Electric push rods 2 are fixed on both the front and rear sides of the mounting block. A connecting plate is fixed to the moving end of the electric push rod 2. A clamping frame is fixed to one side wall of the connecting plate. A semi-circular sponge pad is fixed to the inner wall of the clamping frame. The two sets of electric push rods 1 drive the two sets of semi-circular sponge pads to move alternately to the vertical section of the cable body.

[0020] In the above-mentioned cable production drying device, the drying assembly includes two support legs fixed to the upper end of the base, and the top ends of the two support legs are fixed to the same drying box. The left and right side walls of the drying box are respectively provided with sleeve holes for the cable body to pass through.

[0021] The top of the inner wall of the drying oven is fixed with a hollow hot air disc of V-shaped structure, and multiple hot air nozzles are evenly fixed and connected to its inner side.

[0022] The upper end of the hollow hot air plate is fixedly connected to a hot air pipe, and a blower hot air fan is installed on the hot air pipe.

[0023] The bottom of the drying oven is fixedly connected to an exhaust pipe, and an exhaust fan is installed on the exhaust pipe.

[0024] In the above-mentioned cable production drying device, the online self-cleaning component includes two electric slide rails fixed on the mounting plate and located below two sets of electric push rods respectively. The moving end of the electric slide rail is fixed with a lifting plate. A rotating tube is rotatably sleeved on the surface of the lifting plate away from the electric slide rail. A motor rotating component two for driving the rotating tube to rotate is fixed at the bottom of the lifting plate.

[0025] The rotating tube has a scraper fixed to its wall, and a drying air duct is also fixedly connected to the rotating tube wall. The drying air duct has multiple air outlets on the side away from the rotating tube.

[0026] The bottom end of the rotating tube is rotatably connected to a connecting tube via a rotary sealing joint. The end of the connecting tube away from the rotating tube is connected to the hot air pipe of the drying component. An electrically controlled valve is installed on the connecting tube.

[0027] In the aforementioned cable production drying device, a humidity sensor is also installed on the exhaust pipe. The humidity sensor is electrically connected to a PLC controller, and the PLC controller controls the operation of the online self-cleaning component based on the humidity detection signal fed back by the humidity sensor.

[0028] Compared with existing technologies, the advantages of this invention are as follows:

[0029] 1. A multi-stage drying process is adopted, including tapping for coarse dehydration, spiral blowing for fine dehydration, wiping and adsorption, and drying for deep dehydration, to ensure the drying effect. The first three stages of dehydration can remove more than 98% of the surface moisture, which greatly reduces the drying load and effectively reduces the final drying power.

[0030] 2. The spiral water blowing assembly adopts a rotary jet structure. The hollow rotating cylinder drives multiple inclined jet cylinders to rotate synchronously, generating a 360° spiral airflow that can effectively peel off the water film on the cable surface and penetrate deep into the gaps of the stranded conductor to remove accumulated water. There are no dead zones in the airflow. At the same time, the inclined section's conveying path design allows the blown water to flow naturally down the cable surface, avoiding secondary water carryover.

[0031] 3. The wiping and dehydration component adopts a dual-set switchable semi-circular sponge pad structure, combined with an online self-cleaning component. When the humidity sensor detects that the humidity of the air discharged from the drying chamber exceeds the set threshold, the PLC controller automatically switches to the backup sponge pad and sequentially squeezes and dehydrates the saturated sponge pad and dries it with hot air. This achieves online self-cleaning and recycling of the wiping element without the need for machine shutdown for replacement, effectively improving dehydration efficiency while ensuring the stability of the wiping effect.

[0032] 4. The drying unit adopts a V-shaped hollow hot air disc structure, with multiple hot air nozzles evenly arranged along the inner side of the V-shape. This allows for hot air blowing on the cable surface from multiple angles, ensuring uniform drying without any dead corners. At the same time, the combination of top hot air blowing and bottom negative pressure ventilation can quickly expel the hot and humid air from the drying chamber, improving drying efficiency. Furthermore, the drying temperature does not need to be too high, avoiding overheating and aging of the insulation material. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0034] Figure 2 This is a three-dimensional cross-sectional view of the water removal component of the present invention;

[0035] Figure 3This is a three-dimensional structural schematic diagram of the spiral water blowing assembly of the present invention;

[0036] Figure 4 This is a three-dimensional structural diagram of the wiping and water-removing component of the present invention;

[0037] Figure 5 yes Figure 4 A three-dimensional structural diagram of the installation of the central clamping frame and the semi-circular sponge pad;

[0038] Figure 6 This is a three-dimensional cross-sectional view of the drying component of the present invention;

[0039] Figure 7 yes Figure 6 A schematic diagram of the three-dimensional structure of a hollow hot air coil;

[0040] Figure 8 This is a three-dimensional structural diagram of the online self-cleaning component of the present invention.

[0041] In the diagram: 1. Base, 2. Support plate, 3. Guide wheel, 4. Cable body, 5. Horizontal section one, 6. Inclined section, 7. Vertical section, 8. Horizontal section two, 9. Impact water removal assembly, 91. Power housing, 92. Impact rod, 93. Impact wheel, 94. Force plate, 95. Return spring, 96. Force permanent magnet plate, 97. Force-increasing electromagnetic plate, 10. Spiral water blowing assembly, 101. Positioning plate, 102. Hollow air supply cylinder, 103. Hollow rotating cylinder, 104. Jet nozzle, 105. Motor rotating assembly one, 106. Air supply pipe, 107. Air supply pump, 11. Wiping water removal assembly, 111. Mounting plate, 112. Electric actuator 1, 113 mounting block, 114 electric actuator 2, 115 connecting plate, 116 clamping frame, 117 semi-circular sponge pad, 12 drying assembly, 121 support leg, 122 drying box, 123 hollow hot air disc, 124 hot air nozzle, 125 hot air duct, 126 blower hot air fan, 127 exhaust duct, 128 exhaust fan, 129 humidity sensor, 13 online self-cleaning assembly, 131 electric slide rail, 132 lifting plate, 133 rotating tube, 134 motor rotating assembly 2, 135 wiper blade, 136 drying air duct, 137 connecting pipe. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] like Figures 1-8As shown, a cable production drying device includes a base 1 and a PLC controller. A support plate 2 is fixed to the upper rear side of the base 1. Multiple guide wheels 3 are rotatably connected to the support plate 2. Cable bodies 4 are conveyed on the multiple guide wheels 3. The multiple guide wheels 3 are arranged in a zigzag shape, dividing the conveying path of the cable body 4 into horizontal section 1 5, inclined section 6, vertical section 7 and horizontal section 2 8 in sequence. The cable body 4 moves at a constant speed along the path under the drive of an external winding device.

[0044] Along the conveying direction of the cable body 4, a knocking water removal component 9, a spiral water blowing component 10, a wiping water removal component 11, and a drying component 12 are arranged in sequence to form a four-level gradient drying system.

[0045] like Figure 2 As shown, the tapping and water removal assembly 9 is located below the horizontal section 5 of the cable body 4. It is used to perform high-frequency vibration tapping on the cable body 4 to remove large free water droplets from the surface. It includes a power housing 91 fixed to the base 1. A tapping rod 92 is movably inserted into the top of the power housing 91. A tapping wheel 93 is fixed to the top of the tapping rod 92. The tapping wheel 93 is made of polyurethane elastic material with a Shore hardness of 65A, and its outer circumferential surface abuts against the lower side of the cable body 4. A force-bearing plate 94 is fixed to the bottom of the tapping rod 92. A return spring 95, sleeved on the outside of the striking rod 92, is fixed between the upper end of the force plate 94 and the top of the inner wall of the power housing 91. A force-bearing permanent magnet plate 96 is fixed at the lower end of the force plate 94. An amplifying electromagnetic plate 97, which is opposite to the force-bearing permanent magnet plate 96, is fixed at the bottom of the inner wall of the power housing 91. A 5-10mm air gap is left between the two. The amplifying electromagnetic plate 97 is electrically connected to the PLC controller. The PLC controller can output an alternating current with adjustable frequency and amplitude to control the amplifying electromagnetic plate 97 to generate an alternating magnetic field.

[0046] like Figure 3As shown, the spiral water blowing assembly 10 is sleeved on the outside of the inclined section 6 of the cable body 4 to generate a rotating spiral airflow to peel off residual water film and water accumulated in the twisted gaps on the cable surface. The spiral water blowing assembly 10 includes a positioning plate 101 fixed to the upper end of the base 1. The positioning plate 101 has a through hole, and a hollow air supply cylinder 102 is fixedly sleeved in the corresponding through hole. The front end of the hollow air supply cylinder 102 is rotatably connected to a hollow rotating cylinder 103 through a double bearing sealing structure. The hollow rotating cylinder 103 and the hollow air supply cylinder 102 are coaxially arranged and form a connected air chamber inside. Multiple air jets 104 are evenly fixedly connected to the front end of the hollow rotating cylinder 103. The air cylinder 104 is inclined toward the cable body 4 at an angle of 45° with the cable axis and in the opposite direction of the cable conveying direction. This design can enhance the purging effect and prevent moisture from being blown to the subsequent drying section. The double bearing sealing structure includes a bearing mounting step set on the inner wall of the front end of the hollow air cylinder 102. Two deep groove ball bearings are installed face to face on the bearing mounting step. The outer wall of the rear end of the hollow rotating cylinder 103 is interference-fitted with the inner ring of the two deep groove ball bearings. An annular sealing groove is provided on the inner side of the two deep groove ball bearings. A PTFE sealing ring is installed in the annular sealing groove. A dustproof end cap is also fixed to the front end of the hollow air cylinder 102.

[0047] A motor rotation assembly 105 for driving the hollow rotating cylinder 103 to rotate is fixed on the positioning plate 101. An air supply pipe 106 is fixedly connected to the rear end of the hollow air supply cylinder 102. An air supply pump 107 fixed on the positioning plate 101 is installed on the air supply pipe 106. The air supply pump 107 is electrically connected to the PLC controller and can adjust the air supply pressure and flow rate.

[0048] like Figure 4 and Figure 5 As shown, the wiping and dehydration assembly 11 is sleeved on the outside of the vertical section 7 of the cable body 4, and is used to adsorb the microscopic water film and moisture on the surface of the cable. The wiping and dehydration assembly 11 includes a mounting plate 111 fixed on the upper end of the base 1. Two sets of electric push rods 112 are symmetrically fixed on the side wall of the mounting plate 111. Each set of electric push rods 112 has a mounting block 113 fixed at the moving end.

[0049] Electric push rods 114 are fixed on both the front and rear sides of the mounting block 113. A connecting plate 115 is fixed to the moving end of the electric push rod 114. A clamping frame 116 is fixed to one side wall of the connecting plate 115. A semi-circular sponge pad 117 is fixed to the inner wall of the clamping frame 116. The semi-circular sponge pad 117 is made of microfiber composite sponge, and its water absorption capacity is 4 times that of ordinary polyurethane sponge. Two sets of electric push rods 112 drive two sets of semi-circular sponge pads 117 to move alternately to the vertical section 7 of the cable body 4. When one set of semi-circular sponge pads 117 moves to the working position, the two opposing electric push rods 114 drive the clamping frame 116 to move towards each other, so that the two semi-circular sponge pads 117 tightly cover the outside of the cable body 4 and wipe the surface of the cable body 4.

[0050] like Figure 6 and Figure 7 As shown, the drying assembly 12 is set at the horizontal section 8 of the cable body 4 to remove shallow moisture from the cable insulation layer and complete the final drying. The drying assembly 12 includes two support legs 121 fixed to the upper end of the base 1. The top of the two support legs 121 is fixed with the same drying box 122. The left and right side walls of the drying box 122 are respectively provided with sleeve holes for the cable body 4 to pass through. The sleeve holes are provided with annular rubber water-blocking rings to prevent the leakage of hot and humid air. The top of the inner wall of the drying box 122 is fixed with a V-shaped hollow hot air plate 123. Multiple hot air nozzles 124 are uniformly fixed and connected to its inner side. The multiple hot air nozzles 124 are set towards the central axis of the hollow hot air plate 123, which can blow hot air on the surface of the cable body 4 from multiple angles. The upper end of the hollow hot air plate 123 is fixedly connected to a hot air pipe 125. A blower hot air fan 126 is installed on the hot air pipe 125.

[0051] The bottom of the drying oven 122 is fixedly connected to an exhaust pipe 127, on which an exhaust fan 128 is installed. A humidity sensor 129 is also installed on the exhaust pipe 127. The humidity sensor 129 is electrically connected to a PLC controller. The PLC controller controls the operation of the online self-cleaning component 13 according to the humidity detection signal fed back by the humidity sensor 129.

[0052] like Figure 8 As shown, the wiping and dehydration assembly 11 is also equipped with an online self-cleaning assembly 13, which is used to dehydrate and dry the wiping element in real time to ensure continuous wiping effect. The online self-cleaning assembly 13 includes two electric slide rails 131 fixed on the mounting plate 111 and located below the two sets of electric push rods 112 respectively. The moving end of the electric slide rail 131 is fixed with a lifting plate 132. The end surface of the lifting plate 132 away from the electric slide rail 131 is rotatably sleeved with a rotating tube 133. The bottom of the lifting plate 132 is fixed with a motor rotation assembly 134 for driving the rotating tube 133 to rotate.

[0053] A scraper 135 is fixed to the wall of the rotating pipe 133. A drying air duct 136 is also fixedly connected to the wall of the rotating pipe 133. Multiple air outlets are opened on the side of the drying air duct 136 away from the rotating pipe 133. The bottom end of the rotating pipe 133 is rotatably connected to a connecting pipe 137 through a rotary sealing joint. The end of the connecting pipe 137 away from the rotating pipe 133 is connected to the hot air duct 125 of the drying component 12. An electric control valve is installed on the connecting pipe 137.

[0054] The operating principle of the present invention is described as follows: The front end of the cooled cable body 4 is manually wiped clean, and then passes through the guide wheel 3 in sequence above the knocking water removal component 9, inside the spiral water blowing component 10, between the two semi-circular sponge pads 117 of the wiping water removal component 11, and inside the drying component 12, and finally connected to the external winding equipment. The PLC controller controls the winding equipment to start and drives the cable body 4 to move at a set speed at a uniform speed.

[0055] The PLC controller supplies an alternating current with a frequency of 100Hz to the force-applying electromagnetic plate 97. The force-applying electromagnetic plate 97 generates an alternating magnetic field, which generates periodic attractive and repulsive forces with the force-receiving permanent magnet plate 96. Combined with the elastic force of the reset spring 95, it drives the striking rod 92 and the striking wheel 93 to vibrate up and down at high frequency, striking the horizontal section 5 of the cable body 4, shaking off the free large water droplets on the surface of the cable body 4 and the water accumulated in the twisted gaps, removing about 85% of the surface moisture.

[0056] As the cable body 4 continues to move to the inclined section 6, the PLC controller controls the air supply pump 107 and the motor rotation assembly 105 to start. The air supply pump 107 delivers compressed air to the hollow air supply cylinder 102 and the hollow rotating cylinder 103 through the air supply pipe 106. The compressed air is ejected at high speed through multiple jet cylinders 104. At the same time, the motor rotation assembly 105 drives the hollow rotating cylinder 103 to rotate, so that the ejected airflow forms a 360° spiral airflow, which peels off the water film remaining on the surface of the cable body 4 and the water that has not been shaken off in the twisted gaps, removing about 12% of the surface moisture. The blown-off water flows down naturally along the inclined cable surface, avoiding secondary water carry-over.

[0057] As the cable body 4 continues to move to the vertical section 7, the PLC controller controls a set of electric push rods 114 to start, driving the two clamping frames 116 to move towards each other, so that the two semi-circular sponge pads 117 tightly wrap around the cable body 4, adsorbing the microscopic water film and moisture remaining on the surface of the cable body 4, and removing about 2% of the surface moisture.

[0058] The cable body 4 finally enters the horizontal section 2 8 of the drying chamber 122. The PLC controller controls the start of the blower hot air fan 126 and the exhaust fan 128. The blower hot air fan 126 delivers hot air at a temperature of 55°C into the V-shaped hollow hot air plate 123 through the hot air pipe 125. The hot air is blown from multiple angles through multiple hot air nozzles 124 to remove the trace moisture that has penetrated the shallow layer of the insulation layer. The exhaust fan 128 quickly exhausts the hot and humid air in the drying chamber 122 through the exhaust pipe 127 to improve the drying efficiency. The dried cable body 4 is then wound into a coil by the winding equipment.

[0059] During the drying process of the cable body 4, the humidity sensor 129 monitors the humidity of the air discharged from the exhaust pipe 127 in real time and transmits the signal to the PLC controller. When the humidity exceeds the set threshold, it indicates that the currently working semi-circular sponge pad 117 has absorbed water and the wiping effect has decreased. The PLC controller automatically starts the switching and self-cleaning program of the semi-circular sponge pad 117.

[0060] The PLC controller controls the current working set of electric actuators 114 to start in reverse, driving the two clamping frames 116 to release. Then, it controls the set of electric actuators 112 to start in reverse, driving the saturated semi-circular sponge pad 117 to retract to the cleaning position. At the same time, it controls the other set of electric actuators 112 to start in the forward direction, driving the spare dry semi-circular sponge pad 117 to move to the working position. Finally, it controls the set of electric actuators 114 to start in the forward direction, driving the two clamping frames 116 to clamp and continue wiping the cable body 4.

[0061] The PLC controller controls the electric slide rail 131 corresponding to the cleaning position to start, driving the lifting plate 132 to rise, so that the wiper 135 and the drying air duct 136 move between the two semi-circular sponge pads 117. Then, the electric push rod 114 is controlled to start in the forward direction, driving the two clamping frames 116 to move towards each other, so that the semi-circular sponge pads 117 are in close contact with the wiper 135 and are squeezed and deformed.

[0062] The PLC controller starts the motor rotation assembly 134 and the electric control valve. The motor rotation assembly 134 drives the rotating tube 133 to rotate, which in turn drives the scraper 135 and the drying air duct 136 to rotate synchronously, further squeezing the semi-circular sponge pad 117 and scraping off the water accumulated inside. At the same time, part of the hot air delivered by the blower 126 enters the rotating tube 133 through the connecting pipe 137, and then blows onto the semi-circular sponge pad 117 through the air outlet of the drying air duct 136 to dry the semi-circular sponge pad 117 with hot air. The drying time is set to 5 minutes. After drying is completed, the PLC controller controls the electric control valve and the motor rotation assembly 134 to close, and controls the electric slide rail 131 to drive the lifting plate 132 to descend to the initial position. The semi-circular sponge pad 117 then enters the standby state.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cable production drying device, comprising a base (1) and a PLC controller, wherein a support plate (2) is fixed to the upper rear side of the base (1), and a plurality of guide wheels (3) are rotatably connected to the support plate (2), and cable bodies (4) are conveyed on the plurality of guide wheels (3), characterized in that, The multiple guide wheels (3) divide the conveying path of the cable body (4) into horizontal section one (5), inclined section (6), vertical section (7) and horizontal section two (8) in sequence; and also include a knocking water removal component (9), a spiral water blowing component (10), a wiping water removal component (11) and a drying component (12) arranged in sequence along the conveying direction of the cable body (4). The tapping water removal component (9) is located below the horizontal section (5) of the cable body (4) and is used to perform high-frequency vibration tapping on the cable body (4) to remove large free water droplets on the surface. The spiral water blowing assembly (10) is sleeved on the outside of the inclined section (6) of the cable body (4) to generate a rotating spiral airflow to peel off the residual water film on the cable surface and the water accumulated in the twisted gaps. The wiping and dehydration component (11) is sleeved on the outside of the vertical section (7) of the cable body (4) and is used to adsorb the microscopic water film and moisture on the cable surface. The drying component (12) is located at the horizontal section two (8) of the cable body (4) to remove shallow moisture from the cable insulation layer and complete the final drying. The wiping and water removal component (11) is also equipped with an online self-cleaning component (13) for real-time dehydration and drying of the wiping element to ensure continuous wiping effect.

2. The cable production drying apparatus according to claim 1, characterized in that, The knocking water removal assembly (9) includes a power housing (91) fixed on the base (1), a knocking rod (92) is movably inserted into the top of the power housing (91), a knocking wheel (93) is fixed to the top of the knocking rod (92), and the knocking wheel (93) abuts against the lower side of the corresponding horizontal section (5) of the cable body (4). A force-bearing plate (94) is fixed to the bottom of the striking rod (92). A return spring (95) sleeved on the outside of the striking rod (92) is fixed between the upper end of the force-bearing plate (94) and the top of the inner wall of the power housing (91). A force-bearing permanent magnet plate (96) is fixed to the lower end of the force-bearing plate (94). An amplifying electromagnetic plate (97) is fixed to the bottom of the inner wall of the power housing (91) and is arranged opposite to the force-bearing permanent magnet plate (96). The amplifying electromagnetic plate (97) is electrically connected to the PLC controller.

3. The cable production drying apparatus according to claim 1, characterized in that, The spiral water blowing assembly (10) includes a positioning plate (101) fixed on the upper end of the base (1). The positioning plate (101) has a through hole, and a hollow air supply cylinder (102) is fixedly sleeved in the corresponding through hole. The front end of the hollow air supply cylinder (102) is rotatably connected to a hollow rotating cylinder (103) through a double bearing sealing structure. The hollow rotating cylinder (103) and the hollow air supply cylinder (102) are coaxially arranged and form a connected air cavity inside. The front end of the hollow rotating cylinder (103) is uniformly and fixedly connected with multiple air jets (104). The air jets (104) are inclined toward the cable body (4), with an angle of 30° to 45° with the cable axis, and are in the opposite direction to the cable conveying direction. The positioning plate (101) is fixed with a motor rotation assembly (105) for driving the hollow rotating cylinder (103) to rotate. The rear end of the hollow air supply cylinder (102) is fixedly connected to an air supply pipe (106). An air supply pump (107) fixed on the positioning plate (101) is installed on the air supply pipe (106). The air supply pump (107) is electrically connected to the PLC controller.

4. A cable production drying apparatus according to claim 3, characterized in that, The dual-bearing sealing structure includes a bearing mounting step on the inner wall of the front end of the hollow air supply cylinder (102). Two deep groove ball bearings are mounted face to face on the bearing mounting step. The outer wall of the rear end of the hollow rotating cylinder (103) is interference-fitted with the inner rings of the two deep groove ball bearings. An annular sealing groove is provided on the inner side of the two deep groove ball bearings. A PTFE sealing ring is installed in the annular sealing groove. A dustproof end cap is also fixed to the front end of the hollow air supply cylinder (102).

5. A cable production drying apparatus according to claim 4, characterized in that, The wiping and water removal assembly (11) includes a mounting plate (111) fixed on the upper end of the base (1). Two sets of electric push rods (112) are symmetrically fixed on the side wall of the mounting plate (111). Each set of electric push rods (112) has a mounting block (113) fixed at its moving end. Electric push rods 2 (114) are fixed on both the front and rear sides of the mounting block (113). A connecting plate (115) is fixed to the moving end of the electric push rod 2 (114). A clamping frame (116) is fixed to one side wall of the connecting plate (115). A semi-circular sponge pad (117) is fixed to the inner wall of the clamping frame (116). Two sets of electric push rods 1 (112) drive two sets of semi-circular sponge pads (117) to move alternately to the vertical section (7) of the cable body (4).

6. A cable production drying apparatus according to claim 5, characterized in that, The drying assembly (12) includes two support legs (121) fixed to the upper end of the base (1). The top ends of the two support legs (121) are fixed to the same drying box (122). The left and right side walls of the drying box (122) are respectively provided with sleeve holes for the cable body (4) to pass through. The top of the inner wall of the drying box (122) is fixed with a hollow hot air plate (123) of V-shaped structure, and multiple hot air nozzles (124) are uniformly fixed and connected to its inner side. The upper end of the hollow hot air plate (123) is fixedly connected to a hot air pipe (125), and a blower hot air fan (126) is installed on the hot air pipe (125). The bottom of the drying box (122) is fixedly connected to an exhaust pipe (127), and an exhaust fan (128) is installed on the exhaust pipe (127).

7. A cable production drying apparatus according to claim 6, characterized in that, The online self-cleaning component (13) includes two electric slide rails (131) fixed on the mounting plate (111) and located below the two sets of electric push rods (112). The moving end of the electric slide rail (131) is fixed with a lifting plate (132). The end surface of the lifting plate (132) away from the electric slide rail (131) is rotatably sleeved with a rotating tube (133). The bottom of the lifting plate (132) is fixed with a motor rotating component (134) for driving the rotating tube (133) to rotate. The rotating pipe (133) has a scraper (135) fixed to its wall, and the rotating pipe (133) is also fixedly connected to a drying air duct (136). The drying air duct (136) has multiple air outlets on the side away from the rotating pipe (133). The bottom end of the rotating tube (133) is rotatably connected to the connecting tube (137) through a rotating sealing joint. The end of the connecting tube (137) away from the rotating tube (133) is connected to the hot air pipe (125) of the drying component (12). An electric control valve is installed on the connecting tube (137).

8. A cable production drying apparatus according to claim 6, characterized in that, A humidity sensor (129) is also provided on the exhaust pipe (127). The humidity sensor (129) is electrically connected to the PLC controller. The PLC controller controls the operation of the online self-cleaning component (13) according to the humidity detection signal fed back by the humidity sensor (129).

Images