Automatic wrapping device for cable fireproof layer

Abstract

The utility model discloses an automatic cable fireproof layer coating device. Relates to the field of cable coating devices, and comprises an unwinding mechanism, a base is arranged in front of the unwinding mechanism, a coating mechanism is arranged above the base, an extrusion pipe is arranged above the coating mechanism, and a storage barrel is arranged above the extrusion pipe; a material distribution groove is formed in the coating mechanism, the upper end of the material distribution groove is communicated with the extrusion pipe, a plurality of annularly-distributed flowing channels are formed in the rear end of the material distribution groove, the annularly-distributed flowing channels are converged to a rear conical groove, and a cable channel is formed in the front end of the interior of the coating mechanism; a through hole is formed in the rear end of the interior of the coating mechanism, and the midpoints of the through hole, the conical groove and the cable channel are located on the same horizontal line, and the coating mechanism provided by the scheme solves the problem that the thickness of the cable is not uniform in the process of coating the fireproof layer.

Description

Technical Field

[0001] The utility model relates to the technical field of cable covering devices, in particular to an automatic covering device for a cable fireproof layer. Background Art

[0002] The main function of the cable fireproof layer is to provide fire protection. It prevents the spread of flames and the conduction of high temperature by wrapping the cable, thereby reducing the damage to the cable caused by fire. The coating platform serves as a support platform for cable coating. It usually has structures such as fixed side wall grooves to fix and support the cable and coating materials. During the coating process, the cable is transported by a rolling disc to ensure uniform wrapping of the coating material. The coating device evenly wraps the fireproof material on the outside of the cable.

[0003] For example, the Chinese authorized patent with announcement number CN207867970U, "A new type of wire and cable covering device", includes a cable, a cable covering barrel body, a cooling barrel and a storage barrel. The lower surface of the cable covering barrel body is installed with a support leg, and the lower surface of the support leg is welded with a base, the upper surface of the storage barrel is installed with a sealing cover, and the upper surface of the storage barrel is welded with a motor box on one side of the sealing cover, a first motor is welded inside the motor box, and a rotating rod is sleeved on the rotating shaft of the first motor passing through the storage barrel, a first bracket is installed on the upper surface of the base, and a first reel is sleeved on the first bracket, a support leg is installed on the lower surface of the cooling barrel, and the support leg is welded to the base, a second bracket is welded on the upper surface of the base, and a second reel is sleeved on the second bracket, and the cable is wound on the first reel.

[0004] Although the above-mentioned existing technology can realize the coating of the cable core with fireproof material, during the coating process, the melted fireproof material cannot evenly cover the outside of the wire core, and inconsistent thickness may easily occur. Therefore, it does not meet the existing needs. In this regard, we propose an automatic coating device for the cable fireproof layer. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic fireproof layer covering device for cables, so as to solve the problem of uneven thickness of cables during the process of covering the fireproof layer proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic cable fireproof layer covering device, comprising a unwinding mechanism, a base is provided in front of the unwinding mechanism, a covering mechanism is provided above the base, an extrusion tube is provided above the covering mechanism, and a storage barrel is provided above the extrusion tube; a distribution trough is provided inside the covering mechanism, and the upper end of the distribution trough is connected to the extrusion tube, a rear end of the distribution trough is provided with a plurality of annularly distributed flow channels, and the plurality of annularly distributed flow channels converge to a conical groove at the rear, a cable channel is provided at the front end inside the covering mechanism, a through hole is provided at the rear end inside the covering mechanism, and the midpoints of the through hole, the conical groove and the cable channel are all located on the same horizontal line.

[0007] Preferably, a motor is installed at the top of the storage barrel, and a rotating shaft is installed on the output shaft of the motor, which passes through the storage barrel and extends to the inside of the extrusion tube. A spiral extrusion blade is fixedly provided at one end of the rotating shaft located inside the extrusion tube, and injection ports are provided on both sides of the upper end surface of the storage barrel.

[0008] Preferably, a steam chamber is provided in the inner wall of the coating mechanism and the storage barrel, a steam chamber is provided inside the base, an electric heating device is installed at the bottom of the steam chamber, a pump is installed on the air outlet pipe of the steam chamber, a steam delivery pipe is installed on the pump, and the steam delivery pipe is connected to the steam chamber through a pipeline.

[0009] Preferably, a cooling water tank is provided at the rear end of the base, and a temperature sensor is provided inside the cooling water tank. A return water pipe is provided on one side of the cooling water tank, and the other end of the return water pipe extends to the inside of the steam chamber.

[0010] Preferably, a cooling air box is installed at the rear end of the cooling water tank, and two cavities are provided inside the cooling air box. Two evaporators are installed in the upper cavity, fans are installed under the evaporators, and a condenser is installed in the lower cavity. A compressor is installed on one side of the condenser, and the evaporator, condenser and compressor are connected by a medium delivery pipe.

[0011] Preferably, a winding mechanism is provided at the rear end of the cooling air box.

[0012] Preferably, a municipal water supply pipe is provided on the side of the cooling water tank.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model is provided with a material distribution trough. By turning on the motor, its output shaft drives the rotating shaft to rotate, and synchronously drives the spiral extrusion blades to rotate. The fireproof material inside the storage barrel is accumulated downward under the action of gravity, and the spiral extrusion blades extrude and transport the fireproof material so that it enters the interior of the material distribution trough after compression. Since the material distribution trough is annular in structure, the fireproof material is filled first. After filling, as the pressure increases, it enters the interior of the conical groove through multiple annularly distributed flow channels. At this time, with the cooperation of the unwinding mechanism and the rewinding mechanism, the cable core passes through the conical groove from the cable channel, so that the fireproof material wraps the cable core from multiple directions, thereby improving the uniformity of the fireproof material coating and avoiding the problem of inconsistent thickness of the fireproof material after coating.

[0015] 2. The utility model uses a preheating recovery mechanism to discharge the coated cable from the through-hole, and part of it will fall into the interior of the cooling water tank. Under the heat exchange with the internal cooling water, the surface fireproof material is quickly cooled. As the contact time with the fireproof material continues to increase, the temperature of the water inside the cooling water tank will also increase. The temperature sensor installed inside can monitor the temperature in real time. When the temperature reaches the set value, the pump outside the return pipe is turned on to transport the hot water inside the cooling water tank to the steam chamber. By turning on the electric heating device, the hot water is further heated and boiled. The generated steam is transported to the steam delivery pipe through the pump, and then enters the steam chamber inside the storage barrel and the coating mechanism respectively, and uses the heat to promote the melting of the internal fireproof material. The waste heat recovery mechanism can not only ensure the cooling effect of the cable core, but also recover the heat generated in the cooling process, effectively improving resource utilization.

[0016] 3. The utility model is provided with a cooling bellows, and the cable core cooled by the cooling water tank enters the interior of the cooling bellows. By turning on the compressor, the high-temperature and high-pressure superheated steam discharged from the compressor is cooled into a medium-temperature and high-pressure liquid refrigerant, and heat is released. The liquid refrigerant evaporates in the evaporator, absorbs heat, and reduces the surface temperature of the evaporator, cooling the surrounding air. Subsequently, the fan is turned on to blow the surrounding cold air upward, so that it comes into contact with the passing cable, further improving the molding effect of the fireproof material on the cable core surface. In addition, the cooling water tank is used for gradient cooling to avoid deformation of the fireproof material caused by a sharp drop in temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the covering mechanism of the present invention;

[0019] Figure 3 This is a schematic diagram of the material distribution trough structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the cooling air box of the present invention.

[0021] In the figure: 1. Unwinding mechanism; 2. Base; 3. Coating mechanism; 4. Storage barrel; 5. Cooling water tank; 6. Cooling bellows; 7. Rewinding mechanism; 8. Motor; 9. Filling port; 10. Extrusion tube; 11. Steam delivery pipe; 12. Through hole; 13. Return pipe; 14. Steam chamber; 15. Rotating shaft; 16. Spiral extrusion blade; 17. Distribution trough; 18. Flow channel; 19. Conical trough; 20. Steam generating chamber; 21. Electric heating device; 22. Cable channel; 23. Evaporator; 24. Fan; 25. Condenser; 26. Compressor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4 The utility model provides an embodiment: an automatic cable fireproof layer covering device, including a reeling mechanism 1, a base 2 is provided in front of the reeling mechanism 1, a covering mechanism 3 is provided above the base 2, an extrusion tube 10 is provided above the covering mechanism 3, and a storage barrel 4 is provided above the extrusion tube 10; a material distribution trough 17 is provided inside the covering mechanism 3, and the upper end of the material distribution trough 17 is communicated with the extrusion tube 10, and the rear end of the material distribution trough 17 is provided with a plurality of annularly distributed flow channels 18, and the plurality of annularly distributed flow channels 18 converge into a conical groove 19 at the rear, a cable channel 22 is provided at the front end of the covering mechanism 3, and a through hole 12 is provided at the rear end of the covering mechanism 3, and the midpoints of the through hole 12, the conical groove 19 and the cable channel 22 are all located on the same horizontal line.

[0024] When in use, the motor 8 is turned on, and its output shaft drives the rotating shaft 15 to rotate, and synchronously drives the spiral extrusion blades 16 to rotate. The fireproof material inside the storage barrel 4 is accumulated downward under the action of gravity, and the spiral extrusion blades 16 extrude and transport the fireproof material so that it enters the interior of the distribution trough 17 after compression. Since the distribution trough 17 is annular in structure, the fireproof material is filled first. After filling, as the pressure increases, it enters the interior of the conical groove 19 through multiple annular flow channels 18. At this time, with the cooperation of the unwinding mechanism 1 and the winding mechanism 7, the cable core passes through the conical groove 19 from the cable channel 22, so that the fireproof material wraps the cable core from multiple directions.

[0025] See also Figure 2A motor 8 is installed at the top of the storage barrel 4, and a rotating shaft 15 is installed on the output shaft of the motor 8, which passes through the storage barrel 4 and extends to the inside of the extrusion tube 10. A spiral extrusion blade 16 is fixedly provided at one end of the rotating shaft 15 located inside the extrusion tube 10, and injection ports 9 are provided on both sides of the upper end surface of the storage barrel 4 to realize the extrusion and transportation of the melted fireproof material.

[0026] See also Figure 2 A steam chamber 14 is provided in the inner wall of the coating mechanism 3 and the storage barrel 4, a steam generating chamber 20 is provided inside the base 2, an electric heating device 21 is installed at the bottom of the steam generating chamber 20, a pump is installed on the air outlet pipe of the steam generating chamber 20, a steam delivery pipe 11 is installed on the pump, and the steam delivery pipe 11 is connected to the steam chamber 14 through a pipeline to deliver high-temperature steam to the steam chamber 14 of the coating mechanism 3 and the storage barrel 4, and use high temperature to ensure that the fireproof material is in a molten state, which is convenient for subsequent transportation.

[0027] See also Figure 1 and Figure 2 A cooling water tank 5 is provided at the rear end of the base 2, and a temperature sensor is provided inside the cooling water tank 5. A return water pipe 13 is provided on one side of the cooling water tank 5, and the other end of the return water pipe 13 extends to the inside of the steam generating chamber 20. A municipal water supply pipe is provided on the side of the cooling water tank 5. The waste heat recovery mechanism can not only ensure the cooling effect of the cable core, but also recover the heat generated in the cooling process, effectively improving resource utilization.

[0028] See also Figure 1 and Figure 4 A cooling air box 6 is installed at the rear end of the cooling water tank 5, and a winding mechanism 7 is provided at the rear end of the cooling air box 6. Two cavities are provided inside the cooling air box 6. Two evaporators 23 are installed in the upper cavity, and fans 24 are installed under the evaporators 23. A condenser 25 is installed in the lower cavity, and a compressor 26 is installed on one side of the condenser 25. The evaporator 23, the condenser 25 and the compressor 26 are connected by a medium conveying pipe, which further improves the molding effect of the fireproof material on the cable core surface, and cooperates with the cooling water tank 5 to perform gradient cooling to avoid deformation of the fireproof material caused by a sharp drop in temperature.

[0029] Working principle: When in use, the coated cable is discharged from the through hole 12, and part of it will fall into the interior of the cooling water tank 5. Under the heat exchange with the internal cooling water, the surface fireproof material is quickly cooled. As the contact time with the fireproof material continues to increase, the temperature of the water inside the cooling water tank 5 will also increase. The temperature sensor set inside can monitor the temperature in real time. When the temperature reaches the set value, the pump outside the return pipe 13 is turned on to transport the hot water inside the cooling water tank 5 to the steam generating chamber 20. By turning on the electric heating device 21, the hot water is further heated and boiled. The generated steam is transported to the steam delivery pipe 11 through the pump. It enters the steam chamber 14 inside the storage barrel 4 and the coating mechanism 3, and uses heat to promote the melting of the internal fireproof material. The cable core cooled by the cooling water tank 5 enters the interior of the cooling air box 6. By turning on the compressor 26, the high-temperature and high-pressure superheated steam discharged from the compressor 26 is cooled into a medium-temperature and high-pressure liquid refrigerant, and heat is released. The liquid refrigerant evaporates in the evaporator 23, absorbs heat, and reduces the surface temperature of the evaporator 23, cooling the surrounding air. Then, the fan 24 is turned on to blow the surrounding cold air upwards, so that it comes into contact with the passing cable, further improving the molding effect of the fireproof material on the cable core surface, and cooperating with the cooling water tank 5 to perform gradient cooling.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An automatic cable fireproof layer covering device, comprising a reeling mechanism (1), a base (2) provided in front of the reeling mechanism (1), a covering mechanism (3) provided above the base (2), an extrusion tube (10) provided above the covering mechanism (3), and a material storage barrel (4) provided above the extrusion tube (10); characterized in that: A material distribution trough (17) is provided inside the covering mechanism (3), and the upper end of the material distribution trough (17) is connected to the extrusion tube (10). A plurality of annularly distributed flow channels (18) are provided at the rear end of the material distribution trough (17), and the plurality of annularly distributed flow channels (18) converge into a tapered trough (19) at the rear. A cable channel (22) is provided at the front end of the covering mechanism (3), and a through hole (12) is provided at the rear end of the covering mechanism (3), and the midpoints of the through hole (12), the tapered trough (19) and the cable channel (22) are all located on the same horizontal line.

2. The cable fireproof layer automatic covering device according to claim 1, characterized in that: A motor (8) is installed at the top end of the storage barrel (4), and a rotating shaft (15) is installed on the output shaft of the motor (8), which passes through the storage barrel (4) and extends to the inside of the extrusion tube (10). A spiral extrusion blade (16) is fixedly provided at one end of the rotating shaft (15) located inside the extrusion tube (10), and injection ports (9) are provided on both sides of the upper end surface of the storage barrel (4).

3. The cable fireproof layer automatic covering device according to claim 2, characterized in that: A steam chamber (14) is provided in the inner walls of the coating mechanism (3) and the storage barrel (4); a steam generating chamber (20) is provided inside the base (2); an electric heating device (21) is installed at the bottom of the steam generating chamber (20); a pump is installed on the air outlet pipe of the steam generating chamber (20); a steam delivery pipe (11) is installed on the pump; and the steam delivery pipe (11) is connected to the steam chamber (14) through a pipeline.

4. The automatic cable fireproof layer covering device according to claim 3 is characterized in that: A cooling water tank (5) is provided at the rear end of the base (2), and a temperature sensor is provided inside the cooling water tank (5). A return water pipe (13) is provided on one side of the cooling water tank (5), and the other end of the return water pipe (13) extends to the interior of the steam generating chamber (20).

5. The automatic cable fireproof layer covering device according to claim 4, characterized in that: A cooling air box (6) is installed at the rear end of the cooling water tank (5), and two cavities are provided inside the cooling air box (6). Two evaporators (23) are installed in the upper cavity, and fans (24) are installed below the evaporators (23). A condenser (25) is installed in the lower cavity, and a compressor (26) is installed on one side of the condenser (25). The evaporator (23), the condenser (25) and the compressor (26) are connected by a medium delivery pipe.

6. The automatic cable fireproof layer covering device according to claim 5, characterized in that: A winding mechanism (7) is provided at the rear end of the cooling air box (6).

7. The automatic cable fireproof layer covering device according to claim 4, characterized in that: A municipal water supply pipe is provided on the side of the cooling water tank (5).

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