High-speed cable blow-drying device

Abstract

The utility model provides a cable high-speed blow-drying device, which is used for simultaneously realizing high-speed blow-drying of a cable by utilizing waste heat of an extruder, the blow-drying device comprises a conveying assembly, a blow-drying assembly and a control assembly, the conveying assembly is used for conveying air to the blow-drying assembly, the conveying assembly comprises an air pump and a conveying pipeline, and the conveying pipeline is connected with the blow-drying assembly. The air pump is used for providing compressed air with stable pressure into the conveying pipeline, the conveying pipeline comprises a hot air pipeline, the hot air pipeline is arranged on a heating area of the extruder, the blow-drying assembly comprises a support, a blow-drying device is arranged on the support, the blow-drying device is an annular blow-drying device comprising a Laval air injection structure, and the air pump is used for supplying compressed air with stable pressure into the conveying pipeline. The control assembly is used for controlling operation of the conveying assembly and the blow-drying assembly. The waste heat of the extruder is used for heating air to obtain blow-drying hot air, and meanwhile, the annular blow-drying device with a Laval air injection structure is matched to blow-dry water drops on the surface of the cable through high-speed air flow, so that energy is saved, the waste heat is reasonably utilized, and the blow-drying effect and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable processing, in particular to a cable high-speed drying device. Background Art

[0002] In the production and processing of cables, the materials are heated, melted and extruded, and then cooled and formed by cooling water. In order to ensure the quality of the printed characters and finished products of the cables after forming, they need to be blown dry. With the improvement of the efficiency of the current cable production line, the production speed of the cables is also developing towards high speed, which puts higher requirements on the effect of blow drying. Therefore, the solution is often to increase the number of blow dryers, but this solution often has the following defects:

[0003] 1. Increasing the number of dryers will cause the production line to be longer due to the increase in the length of the dryer, and the occupation of the on-site layout will cause a waste of factory space;

[0004] 2. The multi-channel drying method requires the configuration of a multi-channel drying air pump, which will cause a lot of energy waste;

[0005] 3. Traditional high-speed dryers use ordinary nozzles. Under certain pressure conditions, the compressed air outlet speed will be limited;

[0006] 4. When upgrading the efficiency of installed equipment, bottlenecks often occur because the dryer cannot be placed on the original production line. Summary of the invention

[0007] The utility model aims to provide a cable high-speed drying device to solve the above problems.

[0008] The technical solution adopted by the utility model is:

[0009] A high-speed cable drying device is used for utilizing the waste heat of an extruder to simultaneously achieve high-speed drying of the cable. The drying device comprises a conveying component, a drying component and a control component. The conveying component is used for conveying air to the drying component. The conveying component comprises an air pump and a conveying pipeline. The air pump is used for providing compressed air with stable pressure in the conveying pipeline. The conveying pipeline comprises a hot air pipeline. The hot air pipeline is arranged on the heating area of ​​the extruder. The drying component comprises a bracket. A dryer is arranged on the bracket. The dryer is an annular dryer including a Laval jet structure. The control component is used for controlling the operation of the conveying component and the drying component.

[0010] As a further improved technical solution of the utility model, the hair dryer includes a shell, a pipe fitting and an end cover, the pipe fitting is arranged in the shell, the end cover is respectively connected to the shell and the pipe fitting, an air inlet channel is arranged on the shell, an annular air storage chamber is formed between the shell and the pipe fitting, the air inlet channel connects the conveying assembly and the air storage chamber, an annular air inlet groove is arranged on the pipe fitting, a cable channel is arranged in the pipe fitting, the cross-sectional shape of the annular air inlet groove is Laval tubular, and the annular air inlet groove connects the air storage chamber and the cable channel.

[0011] As a further improved technical solution of the utility model, the air outlet direction of the annular air inlet groove is inclined with the moving direction of the cable and faces the inlet direction of the cable.

[0012] As a further improved technical solution of the utility model, the cable channel includes a accommodating section and a third expansion section, the diameter of the third expansion section is larger than the diameter of the accommodating section, the cable enters the accommodating section from the third expansion section, and the annular air inlet groove connects the third expansion section with the air storage chamber.

[0013] As a further improved technical solution of the utility model, the hot air duct is in a serpentine coil covering the outer surface of the heating area of ​​the extruder.

[0014] As a further improved technical solution of the utility model, the conveying component also includes a cold air duct, and the cold air duct is used to provide cold air to the drying component.

[0015] As a further improved technical solution of the utility model, the conveying pipeline also includes an air intake pipeline, the air inlet of the air intake pipeline is connected to an air pump, the hot air duct and the cold air duct are arranged in parallel at the air outlet of the air intake pipeline, and a solenoid valve is arranged on the cold air duct, and the solenoid valve is used to control the air intake volume of the cold air duct.

[0016] As a further improved technical solution of the utility model, an air supply duct is connected to the air inlet of the air inlet channel, a heat storage device is connected to the air inlet of the air supply duct, the heat storage device is connected to the hot air duct and the cold air duct, and a heating tile is arranged on the heat storage device, and the heating tile is used to heat the gas in the heat storage device.

[0017] As a further improved technical solution of the utility model, a temperature sensor is arranged on the heat storage device, and the temperature sensor is used to monitor the temperature of the gas in the heat storage device and feed back to the control component.

[0018] As a further improved technical solution of the utility model, a pressure sensor is arranged on the heat storage device, and the pressure sensor is used to monitor the pressure of the gas in the heat storage device and feed back to the control component.

[0019] The beneficial effects of the utility model are:

[0020] Through the above structure, the waste heat of the extruder is used to heat the air to obtain drying hot air. At the same time, the annular dryer with a Laval jet structure is used to dry the water droplets on the surface of the cable with a high-speed airflow, which saves energy, reasonably utilizes the waste heat, and improves the drying effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the cable high-speed drying device;

[0022] Figure 2 It is a schematic diagram of the coil covering of the hot air duct;

[0023] Figure 3 is a schematic diagram of the structure of the blow-drying assembly;

[0024] Figure 4 is a cross-sectional view of a blow dryer;

[0025] Figure 5 It is a gas flow diagram.

[0026] Among them: 1-cable, 2-air pump, 3-hot air duct, 4-air intake duct, 5-cold air duct, 6-solenoid valve, 7-bracket, 8-dryer, 801-shell, 802-pipe fittings, 803-end cover, 804-air intake channel, 805-air storage chamber, 806-annular air intake groove, 8061-first expansion section, 8062-contraction section, 8063-second expansion section, 807-accommodation section, 808-third expansion section, 9-air supply duct, 10-heat storage device, 11-hot air interface, 12-cold air interface, 13-heating tile, 14-temperature sensor, 15-pressure sensor, 16-extruder, 17-water tank. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0028] If the utility model involves directions (e.g., up, down, left, right, front, back, outside, inside, etc.) when describing, it is necessary to define the directions involved, such as "In order to clearly express the positions and directions described in the utility model, the end close to the operator is the proximal end, and the end away from the operator is the distal end." Or define it with the paper as a reference, etc. Of course, if the positional relationship between the two is defined by mutual reference in the subsequent description, it does not need to be defined here.

[0029] A cable high-speed drying device is used to utilize the waste heat of an extruder 16 to simultaneously achieve high-speed drying of a cable 1. The drying device comprises a conveying component, a drying component and a control component. The conveying component is used to convey wind to the drying component. The drying component is used to allow the wind conveyed from the conveying component to dry water droplets on the cable 1 at high speed. The control component is used to control the operation of the conveying component and the drying component.

[0030] The conveying assembly includes an air pump 2 and a conveying pipeline. The air pump 2 is used to provide compressed air with stable pressure in the conveying pipeline. The conveying pipeline includes a hot air pipeline 3. The hot air pipeline 3 is arranged on the heating area of ​​the extruder 16, so that the gas in the hot air pipeline 3 absorbs the heat emitted by the extruder 16 and becomes hot air. The hot air is transported to the drying assembly along the hot air pipeline 3. Specifically, the hot air pipeline 3 is coated on the outer surface of the heating area of ​​the extruder 16 in a serpentine coil. The serpentine coiling method increases the contact area between the hot air pipeline 3 and the extruder 16, and improves the heat absorption efficiency of the gas.

[0031] More specifically, the delivery pipeline also includes an air intake pipeline 4 and a cold air pipeline 5, the air inlet of the air intake pipeline 4 is connected to the air pump 2, the hot air pipeline 3 and the cold air pipeline 5 are arranged in parallel at the air outlet of the air intake pipeline 4, and the cold air pipeline 5 is used to provide cold air to the drying component.

[0032] More specifically, a solenoid valve 6 is provided on the cold air duct 5, and the solenoid valve 6 is used to control the air intake of the cold air duct 5. When the hot air duct 3 delivers hot air so that the air outlet temperature of the drying component is too high, the valve of the solenoid valve 6 is opened proportionally to provide more cold air for the drying component to balance the temperature, thereby avoiding burning of the cable 1 due to excessive temperature.

[0033] The drying assembly includes a bracket 7, on which a dryer 8 is arranged. The dryer 8 is an annular dryer including a Laval jet structure. The air inlet of the dryer 8 is connected to an air supply duct 9, and the air supply duct 9 connects the hot air duct 3 and the cold air duct 5. The air supply duct 9 is used to provide the air delivered from the hot air duct 3 and the cold air duct 5 to the dryer 8.

[0034] The hair dryer 8 comprises a housing 801, a pipe 802 and an end cover 803. The pipe 802 is arranged in the housing 801. The end cover 803 is connected to the housing 801 and the pipe 802 respectively. An air inlet channel 804 is arranged on the housing 801. An annular air storage chamber 805 is formed between the housing 801 and the pipe 802. The air inlet channel 804 connects the air supply duct 9 and the air storage chamber 805. An annular air inlet groove 806 is arranged on the pipe 802. A cable channel is arranged in the pipe 802. The annular air inlet groove 806 connects the air storage chamber 805 and the cable channel. The cross-sectional shape of the annular air inlet groove 806 is Laval tubular. Specifically, the annular air inlet groove 806 includes a first expansion section 8061, a contraction section 8062, and a second expansion section 8063 arranged in sequence. The first expansion section 8061 connects the air storage chamber 805 and the contraction section 8062, and the second expansion section 8063 connects the contraction section 8062 and the cable channel. The width of the first expansion section 8061 and the width of the second expansion section 8063 are both greater than the width of the contraction section 8062. The air outlet direction of the annular air inlet groove 806 is inclined to the moving direction of the cable 1 and faces the inlet direction of the cable 1. When the cable 1 enters the cable channel, it is directly subjected to the high-speed airflow ejected from the annular air inlet groove 806, thereby improving the drying speed and drying effect.

[0035] The cable channel includes a receiving section 807 and a third expansion section 808. The cable 1 enters the receiving section 807 from the third expansion section 808. Figure 4 As shown in the movement direction of the inner cable 1, the accommodating section 807 is used for allowing the cable 1 to pass through the dryer 8, and the annular air inlet groove 806 is connected to the third expansion section 808 and the air storage chamber 805. The diameter of the third expansion section 808 is larger than the diameter of the accommodating section 807, which is convenient for drying the cable 1. As an embodiment of the utility model, the third expansion section 808 is conical and coaxial with the accommodating section 807.

[0036] When in use, the gas from the air supply duct 9 enters the air inlet channel 804 and reaches the air storage chamber 805. The gas in the air storage chamber 805 enters the third expansion section 808 at an increased speed from the annular air inlet groove 806, and the cable 1 located at the third expansion section 808 is quickly dried. Figure 5 The gas flow velocity in the gas storage chamber 805 is defined as v 0 , define the gas flow velocity in the first expansion section 8061 as v 1 , define the gas flow velocity of the contraction section 8062 as v 2 , define the gas flow velocity in the second expansion section 8063 as v 3 , define the gas flow velocity in the third expansion section 808 as v 4, when used, v 0 =v 1 <v 2 <v 3 =v 4 .

[0037] More specifically, a heat storage device 10 is connected to the air inlet of the air supply duct 9, and the heat storage device 10 is connected to the hot air duct 3 and the cold air duct 5. The hot air delivered from the hot air duct 3 and the cold air delivered from the cold air duct 5 are mixed at the heat storage device 10, and the heat storage device 10 provides gas with stable temperature and pressure for the dryer 8. A hot air interface 11 and a cold air interface 12 are provided on the heat storage device 10, and the hot air interface 11 is connected to the air outlet of the hot air duct 3, and the cold air interface 12 is connected to the air outlet of the cold air duct 5.

[0038] A heating tile 13 is provided on the heat reservoir 10. When the temperature of the gas in the heat reservoir 10 is too low, the heating tile 13 is activated to heat the gas in the heat reservoir 10 to achieve gas temperature replenishment.

[0039] A temperature sensor 14 is provided on the heat storage device 10. The temperature sensor 14 is used to monitor the temperature of the gas in the heat storage device 10 and feed back to the control component. When the temperature of the gas is too low or too high, the control component can timely adjust the gas temperature to restore it to a normal temperature range.

[0040] A pressure sensor 15 is provided on the heat storage device 10. The pressure sensor 15 is used to monitor the pressure of the gas in the heat storage device 10 and feed back to the control component. When the pressure of the gas is too low or too high, the control component can timely adjust the rotation speed of the air pump 2 to restore the gas pressure to a normal pressure range.

[0041] The working principle of the utility model is:

[0042] The cable 1 in production and processing is extruded and formed by the extruder 16, cooled and formed by the water tank 17, and enters the dryer 8. Specifically, the cable 1 enters the accommodating section 807 from the third expansion section 808 and passes through the dryer 8.

[0043] The air pump 2 provides compressed air with stable pressure for the conveying pipeline. The compressed air enters the hot air pipeline 3, moves close to the heating area of ​​the extruder 16, is heated by the waste heat of the extruder 16, and then enters the heat storage device 10. It enters the dryer 8 through the air supply pipeline 9. In the dryer 8, the gas first passes through the air inlet channel 804 and enters the air storage chamber 805. The gas in the air storage chamber 805 is accelerated through the annular air inlet groove 806 and is ejected from the annular air inlet groove 806 at a high speed to dry the cable 1 at the third expansion section 808.

[0044] During operation, when the temperature sensor 14 detects that the gas temperature in the heat reservoir 10 is too high, the opening ratio of the solenoid valve 6 is adjusted, and the cold air duct 5 delivers cold air into the heat reservoir 10 to mix with the hot air in the heat reservoir 10, thereby lowering the gas temperature to the required temperature range; when the temperature sensor 14 detects that the gas temperature in the heat reservoir 10 is too low, the heating tile 13 is turned on to heat the gas in the heat reservoir 10, thereby raising the gas temperature to the required temperature range; when the pressure sensor 15 detects that the gas pressure in the heat reservoir 10 is overpressure or underpressure, the rotation speed of the air pump 2 is adjusted to control the delivered gas pressure until the gas pressure in the heat reservoir 10 reaches the required pressure range.

[0045] The cable high-speed drying device provided by the utility model utilizes the waste heat of the extruder 16 to heat the air to obtain drying hot air through the above-mentioned structure, thereby saving energy and making rational use of the waste heat. The annular dryer with the Laval jet structure is used to dry the water droplets on the surface of the cable 1 with a high-speed airflow, thereby improving the drying effect and efficiency. There is no need to additionally configure other dryers 8 and air pumps 2, thereby saving costs and space. At the same time, the corresponding temperature sensor 14, pressure sensor 15, solenoid valve 6, cold air duct 5 and heating tile 13 are configured to monitor and timely adjust the temperature and pressure of the gas to achieve a safe drying process and an efficient drying effect.

[0046] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0047] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-speed cable drying device, used for utilizing the waste heat of an extruder (16) to simultaneously achieve high-speed drying of a cable (1), characterized in that: The drying device comprises a conveying component, a drying component and a control component, wherein the conveying component is used to convey air to the drying component, the conveying component comprises an air pump (2) and a conveying pipeline, the air pump (2) is used to provide compressed air with stable pressure in the conveying pipeline, the conveying pipeline comprises a hot air pipeline (3), the hot air pipeline (3) is arranged on the heating area of ​​the extruder (16), the drying component comprises a bracket (7), a drying device (8) is arranged on the bracket (7), the drying device (8) is an annular drying device including a Laval jet structure, and the control component is used to control the operation of the conveying component and the drying component.

2. The cable high-speed drying device according to claim 1, characterized in that: The hair dryer (8) comprises a shell (801), a pipe fitting (802) and an end cover (803); the pipe fitting (802) is arranged in the shell (801); the end cover (803) is connected to the shell (801) and the pipe fitting (802) respectively; an air inlet passage (804) is arranged on the shell (801); an annular air storage chamber (805) is formed between the shell (801) and the pipe fitting (802); the air inlet passage (804) connects the conveying component and the air storage chamber (805); an annular air inlet groove (806) is arranged on the pipe fitting (802); a cable channel is arranged in the pipe fitting (802); the cross-section of the annular air inlet groove (806) is in the shape of a Laval tube; the annular air inlet groove (806) connects the air storage chamber (805) and the cable channel.

3. The cable high-speed drying device according to claim 2, characterized in that: The air outlet direction of the annular air inlet groove (806) is inclined with respect to the moving direction of the cable (1) and faces the inlet direction of the cable.

4. The cable high-speed drying device according to claim 2, characterized in that: The cable channel comprises a containing section (807) and a third expansion section (808); the diameter of the third expansion section (808) is larger than the diameter of the containing section (807); the cable (1) enters the containing section (807) from the third expansion section (808); and the annular air inlet groove (806) connects the third expansion section (808) with the air storage chamber (805).

5. The cable high-speed drying device according to claim 1, characterized in that: The hot air duct (3) is in the form of a serpentine coil and covers the outer surface of the heating area of ​​the extruder (16).

6. The cable high-speed drying device according to claim 1, characterized in that: The conveying component also includes a cold air duct (5), and the cold air duct (5) is used to provide cold air to the drying component.

7. The cable high-speed drying device according to claim 6, characterized in that: The delivery pipeline also includes an air intake pipeline (4), the air intake of the air intake pipeline (4) is connected to the air pump (2), the hot air pipeline (3) and the cold air pipeline (5) are arranged in parallel at the air outlet of the air intake pipeline (4), and a solenoid valve (6) is arranged on the cold air pipeline (5), and the solenoid valve (6) is used to control the air intake volume of the cold air pipeline (5).

8. The cable high-speed drying device according to claim 2, characterized in that: An air supply duct (9) is connected to the air inlet of the air inlet channel (804), and a heat storage device (10) is connected to the air inlet of the air supply duct (9). The heat storage device (10) is connected to the hot air duct (3) and the cold air duct (5). A heating tile (13) is provided on the heat storage device (10), and the heating tile (13) is used to heat the gas in the heat storage device (10).

9. The cable high-speed drying device according to claim 8, characterized in that: A temperature sensor (14) is provided on the heat storage device (10), and the temperature sensor (14) is used to monitor the temperature of the gas in the heat storage device (10) and feed back the temperature to the control component.

10. The cable high-speed drying device according to claim 8, characterized in that: A pressure sensor (15) is provided on the heat storage device (10), and the pressure sensor (15) is used to monitor the pressure of the gas in the heat storage device (10) and feed back the pressure to the control component.

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