Temporary flame retardant spraying device for cable
By designing the closed-loop structure of the application belt and the triangular convex strip to enhance friction, the problem of low efficiency of the cable spraying flame retardant is solved, and uniform and efficient spraying of the cable surface is achieved, reducing the physical consumption of staff.
Patent Information
- Application Number
- CN202510440217.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2025-08-12
AI Technical Summary
In the prior art, the use of flame retardant for cables is inefficient and time-consuming, especially when spraying for long distances, it consumes a lot of physical strength to the staff.
A temporary flame retardant spraying device for cables is designed. The two ends of the coating belt are wrapped around the rotor and the cable to form a closed-loop structure. The coating belt is driven by the rotor and the rotor to move along the axial direction of the cable line, and a triangular convex strip is installed on the coating belt to enhance the friction with the cable line, ensuring that the coating belt moves stably on the surface of the cable line. The coating belt material has good hygroscopicity and liquid absorption to maintain the supply of flame retardant.
It realizes uniform application of flame retardant on the surface of the cable, improves spraying efficiency, reduces physical energy consumption of staff, and is suitable for long-distance cables. It is stable and time-saving.
Smart Images
Figure CN120460211A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of cables, in particular to a temporary flame retardant spraying device for cables. Background Art
[0002] Cables are made up of one or more mutually insulated conductive wires placed in a sealed sheath, which can be covered with a protective covering. They are used to transmit and distribute electrical energy or transmit electrical signals. For low-altitude cables, such as those used in residential areas, the insulation layer may age or break due to long-term exposure. When such problems are found in the cables, they need to be temporarily coated with flame retardants before repair or replacement. This can be used as an emergency protective measure to reduce the risk of fire. Liquid flame retardants have many applications in the construction field, mainly used to improve the fire resistance of building materials, cables, thermal insulation materials, etc. Level, thereby reducing the risk of fire. For example, adding liquid flame retardants to wires and cables can effectively prevent the spread of fire along the cables, buying valuable time for personnel evacuation and fire rescue. For a single cable or cable bundle, evenly apply the liquid flame retardant on the outer surface of the cable to form a flame retardant protective film to prevent the flame from spreading on the cable surface. When the cable is exposed to the external environment, such as when it is laid outdoors overhead or in the exposed part of a building, the liquid flame retardant applied to the cable surface can directly contact the air and quickly play a flame retardant role when a fire occurs, reducing the possibility of cable combustion.
[0003] When spraying flame retardants, the traditional method is to build scaffolding. Workers need to carry spraying equipment and climb to a high place and operate the spray gun accurately, which takes a lot of time. Moreover, when the cable spraying distance is long, the workers hold the spray gun for a long time, and their arms are easily sore, which consumes a lot of physical energy and reduces work efficiency. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the present invention provides a temporary flame retardant spraying device for cables, which solves the problems of low efficiency, time-consuming and labor-intensive spraying work.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a temporary flame retardant spraying device for cables, comprising a containing box for containing flame retardant, a rotating wheel for driving the coating belt to rotate is installed in the containing box, one end of the coating belt is spirally wound on the outer surface of the rotating wheel, and the other end is spirally wound on the outer surface of the cable, the spirally wound portion of the coating belt is in a non-overlapping state, the two ends of the coating belt are butt-jointed to form a closed loop structure, the straight line portions extending from the starting and ending points of the spiral portion of the coating belt are in a tangent state, and the straight line portion extending from the spiral portion of the coating belt is in an "eight" shape structure, and the coating belt moves along the axial direction of the cable during rotation.
[0006] Preferably, the containing box is a split structure.
[0007] Preferably, two spiral guide rails are installed on the outer surface of the rotating wheel, the portion where the smear belt contacts the rotating wheel is located between the two guide rails, and the outer surface of the rotating wheel is a circular convex structure.
[0008] Preferably, the coating surface of the coating tape is fixedly provided with a convex strip having a guiding function, and the cross section of the convex strip is a triangular structure, which is used to squeeze one end of the cable to make a rounded corner.
[0009] Preferably, the two ends of the smear belt are connected by Velcro, so that the two ends of the smear belt are relatively fixed.
[0010] Preferably, the side surface of each spirally wound portion of the smear tape is adjacent to and in contact with the corresponding side surface of the adjacent spirally wound portion.
[0011] Preferably, two notches are provided in the box cover of the containing box, and the straight portion of the smear tape is located in the notches.
[0012] Preferably, a collecting box fixed relative to the containing box is installed on the box cover, and an inclined scraper is fixedly installed on the outside of the collecting box. The cross section of the scraper is arc-shaped, and one side of the scraper is a pointed structure and contacts the coating surface of the coating belt.
[0013] Preferably, both ends of the rotor are rotatably connected to the containing box, and the intersection of the rotor and the containing box is sealed. One end of the rotor is connected to the power device, and its rotation is controlled by the power device.
[0014] Preferably, the portion of the smear belt located in the receiving box is a folded edge structure, and a fixed pulley and a movable pulley are installed at the folded edge of the smear belt. The center axis of the fixed pulley is rotatably connected to the receiving box, and the center axis of the movable pulley is slidably connected to the receiving box, and the distance between the two movable pulleys is adjusted by a dual-axis electric push rod.
[0015] Compared with the prior art, the present invention has the following beneficial effects: through the provision of a coating belt, its two ends are respectively wound around the cable and the rotating wheel, and a closed loop is formed when the two ends are fixed, which is tightened by the gravity of the containing box and the flame retardant to form a stable structure, and the installation is simple and efficient. In the process of the rotating wheel driving the coating belt to rotate, due to the spiral winding and the "eight"-shaped straight part, the coating belt moves smoothly along the axis of the cable, and the flame retardant is evenly applied. The triangular convex strips on the contact surface are embedded in the cable sealing sheath to prevent the coating belt from slipping and deflecting, ensuring stable and accurate coating. The flame retardant in the containing box ensures that the bottom of the coating belt is fully immersed; the closed-loop structure of the coating belt makes the coating belt circulate, and it is also suitable for long cables, ensuring that the flame retardant covers the cable sufficiently, saving time and effort in the process of coating the cable with flame retardant, with good effect and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0017] Figure 2 This is a rear view of the container box of the present invention;
[0018] Figure 3 A sectional view of the front view of the container box of the present invention;
[0019] Figure 4 A side view of the convex strips and smear strips of the present invention;
[0020] Figure 5 A side view of the convex strip on the smear belt of the present invention when it is stuck in the notch of the scraper;
[0021] Figure 6 This is a schematic diagram of the structure of the coating tape of the present invention wrapped around the cable;
[0022] Figure 7 This is a cross-sectional view of the coating tape of the present invention when both ends are butted together;
[0023] Figure 8 A sectional view of a side view of a scraper according to the present invention;
[0024] Figure 9 It is a structural schematic diagram of the runner and guide rail of the present invention;
[0025] Figure 10 Schematic diagram of the structure of the movable pulley of the present invention;
[0026] Figure 11 It is a structural schematic diagram of the spray pump of the present invention.
[0027] Among them: 1. Container; 2. Rotating wheel; 3. Coating belt; 4. Guide rail; 5. Raised strip; 6. Velcro; 7. Notch; 8. Collection box; 9. Scraper; 10. Power device; 11. Fixed pulley; 12. Movable pulley; 13. Center axis; 14. Dual-axis electric push rod; 15. Spray pump; 16. Nozzle; 17. Pipeline. DETAILED DESCRIPTION
[0028] like Figures 1-11As shown, a temporary flame retardant spraying device for cables includes a holding box 1 for holding flame retardant, the holding box 1 is a split structure, a runner 2 for driving the coating belt 3 to rotate is installed in the holding box 1, both ends of the runner 2 are rotatably connected to the holding box 1, and the intersection of the runner 2 and the holding box 1 is sealed, one end of the runner 2 is connected to the power device 10, and its rotation is controlled by the power device 10, the power device 10 includes a motor, a grinding wheel A and a grinding wheel B, the grinding wheel A is fixedly connected to one end of the runner 2, the motor is fixedly connected to the holding box 1, the output end of the power device 10 is fixedly connected to the grinding wheel B, the grinding wheel A is in close contact with the grinding wheel B, the ends of the grinding wheels A and B that are close to each other are conical, and two spiral guides are installed on the outer surface of the runner 2. The guide rail 4 and the contact portion of the smear belt 3 with the runner 2 are located between the two guide rails 4. The outer surface of the runner 2 is a circular convex structure to prevent the smear belt 3 from deviating from the runner 2. The smear surface of the smear belt 3 is fixedly installed with a convex strip 5 that plays a guiding role. The cross-section of the convex strip 5 is a triangular structure, and one end of the smear belt 3 is used to extrude the cable line. The rounded corners are set. When the scraper 9 is extruded with the convex strip 5, it can pass over the convex strip 5 along the inclined surface of the convex strip 5. One end of the smear belt 3 is spirally wound on the outer surface of the runner 2, and the other end is spirally wound on the outer surface of the cable line. The spirally wound portion of the smear belt 3 is in a non-overlapping state, and the two ends of the smear belt 3 are butt-jointed to form a closed loop structure. The straight line portions extending from the starting and ending points of the spiral portion of the smear belt 3 are in a tangent state, and the spiral portion of the smear belt 3 The straight part extending from the coating belt 3 is in an "eight"-shaped structure. The coating belt 3 moves along the axial direction of the cable during rotation and continuously applies flame retardant to the cable. When the coating belt 3 rotates, it moves spirally along the cable smoothly and continuously, and can evenly and comprehensively coat the cable, effectively ensuring the coating quality. The portion of the coating belt 3 located in the receiving box 1 is a folded edge structure. A fixed pulley 11 and a movable pulley 12 are installed at the folded edge of the coating belt 3. The central axis 13 of the fixed pulley 11 is rotatably connected to the receiving box 1, and the central axis 13 of the movable pulley 12 is slidably connected to the receiving box 1, and the distance between the two movable pulleys 12 is adjusted by a dual-axis electric push rod 14. The dual-axis electric push rod 14 is fixed to the box body, and the two output ends of the dual-axis electric push rod 14 are respectively connected to the two movable pulleys 1 2, the two ends of the inner central axis 13 are fixedly connected, the two ends of the smear belt 3 are docked by Velcro 6, and the two ends of the smear belt 3 are relatively fixed, the side of each spiral winding part of the smear belt 3 is adjacent to the corresponding side of the adjacent spiral winding part and maintains a contact state, two notches 7 are provided in the box cover of the storage box 1, the straight part of the smear belt 3 is located in the notch 7, the notch 7 is used to limit the smear belt 3 so that it maintains a straight state, a collection box 8 fixed relatively to it is installed on the box cover of the storage box 1, and an inclined scraper 9 is fixedly installed on the outside of the collection box 8. The cross-section of the scraper 9 is arc-shaped, and one side of the scraper 9 is a sharp-angled structure and contacts the smearing surface of the smear belt 3. A notch adapted to the convex strip 5 is provided on the side of the scraper 9 close to the smear belt 3. When the scraping work is in progress,The scraper 9 contacts the coating belt 3, and the ridges 5 move along the notches in the scraper 9. When the coated portion of the coating belt 3 is retracted into the storage box 1, the scraper 9 scrapes off the coated surface of the coating belt 3 due to its arc-shaped cross-section. The scraped foreign matter and old flame retardant flow along the inclined arc surface of the coating belt 3 into the storage box 1, facilitating collection and subsequent processing and reuse. A spray pump 15 is fixedly installed inside the storage box 1, with the nozzle 16 of the spray pump 15 facing the coated surface of the coating belt 3. One end of the pipe 17 of the spray pump 15 is located in the flame retardant in the storage box 1.
[0029] Working principle:
[0030] First, lift the container 1 and wrap one end of the coating tape 3 around the initial spraying position of the cable. Figure 6 As shown, the two ends of the smear tape 3 are fixed by Velcro 6, and the fixing method of the two ends is as follows Figure 7As shown; after the fixation is completed, the coating belt 3 forms a closed loop structure, and then the containing box 1 is slowly lowered, and the cable provides support for the coating belt 3. The gravity of the containing box 1 and the flame retardant inside it is used to make the containing box 1 sag, thereby tightening the coating belt 3 so that the whole can form a stable structure. Then the rotation of the runner 2 is controlled by the power mechanism, such as: the grinding wheel B is driven to rotate by the motor, and the grinding wheel B controls the rotation of the grinding wheel A through the friction between it and the grinding wheel A, and the grinding wheel A drives the runner 2 to rotate. Since one end of the coating belt 3 is spirally wound on the outer surface of the runner 2, when the runner 2 rotates around its own axis, the friction force will drive the spiral part of the coating belt 3 in contact with it to rotate together. Since the coating belt 3 is spirally wound on the outer surface of the runner 2 and the cable, and the spirally wound part is in a non-overlapping state, a structure similar to a coil spring is formed. When the runner 2 drives the spiral part of the coating belt 3 to rotate, this rotation will be transmitted along the spiral direction of the coating belt 3. Since the straight line parts extending from the starting and ending points of the spiral part of the coating belt 3 are opposite The smear belt 3 is in a shear state and has an "eight"-shaped structure, which makes the straight part generate a component force along the axial direction of the cable when the spiral part of the smear belt 3 rotates. Specifically, the straight part of the "eight"-shaped structure will be constrained by the outer surface of the cable and the torsional force of the spiral part when the rotating wheel 2 drives the smear belt 3 to rotate. Since the straight part is tangent to the spiral part, the rotation of the spiral part will cause the straight part to produce a movement trend both around the circumference of the cable and along the axial direction, and the "eight"-shaped structure makes the axial component force able to prompt the smear belt 3 to move along the axial direction of the cable while rotating; the closed-loop structure formed by the butt connection of the two ends of the smear belt 3 ensures the integrity and stability of the smear belt 3 during the movement. Driven by the rotating wheel 2, the smear belt 3 as a whole rotates and moves axially around the cable. The closed-loop structure prevents the smear belt 3 from falling off or loosening during the movement, and can continue to move stably along the axial direction of the cable, thereby achieving the subsequent uniform coating of the cable surface;It should be noted that to ensure that the smear tape 3 can stably move axially around the cable, a special structural design is adopted at the contact surface between the smear tape 3 and the cable. Specifically, a triangular convex strip 5 is installed on the contact surface of the smear tape 3. When the smear tape 3 squeezes the sealing sheath of the outer layer of the cable during operation, the tip of the convex strip 5 will first contact the surface of the sealing sheath. As the smear tape 3 continues to apply pressure, the rounded tip of the convex strip 5 prevents the convex strip 5 from damaging the sealing sheath. It also plays a key role in stabilizing the axial movement of the smear tape 3 along the cable. That is, during axial movement, the convex strip 5 increases the friction and bite force between the smear tape 3 and the cable. On the one hand, it prevents the smear tape 3 from slipping on the cable surface, allowing it to move closely in contact with the cable surface. On the other hand, it effectively resists the lateral force generated by the rotation of the smear tape 3 and external interference, preventing the smear tape 3 from axial deviation or shaking, ensuring that the smear tape 3 always moves smoothly and continuously along the axial direction of the cable, thereby ensuring the stability and accuracy of the smearing operation on the cable surface.
[0031] Next, the depth of the flame retardant in the holding box 1 should be higher than the rotating wheel 2, so that the bottom of the coating belt 3 is immersed in the flame retardant in the holding box 1, and the flame retardant invades the coating belt 3. It should be noted that the coating belt 3 can be made of synthetic fiber fabric, which has good hygroscopicity and liquid absorption, can quickly absorb the flame retardant and maintain a certain liquid content, and provide a continuous supply of flame retardant for the coating work. It also has good flexibility and ductility, can move smoothly under the drive of the rotating wheel 2, and is in close contact with the surface of the cable to achieve uniform coating, and also has high strength and wear resistance, can resist wear and tear during use. Tear, adapt to more complex working environment, ensure the normal use of the coating belt 3; since the coating belt 3 is a closed loop structure, this allows the coating belt 3 to form a continuous circulation path when it rotates, one end is wound around the runner 2, and the other end is wound around the cable. When the runner 2 drives the coating belt 3 to rotate, the coating belt 3 will continue to circulate between the runner 2 and the cable. When the cable that needs to be temporarily coated with flame retardant is long, it can also ensure that the cable is fully coated with flame retardant. It should be noted that the contact surface of the coating belt 3 will be squeezed by the movable pulley 12 and the static pulley, so that the flame retardant content on the coating belt 3 is reduced. Figure 11 As shown, the spray pump 15 can be started to allow the flame retardant in the holding box 1 to enter from the pipe 17 and be sprayed out from the nozzle in a fan-shaped manner, spraying the flame retardant onto the coating belt 3, and the height of the nozzle can be greater than the height of the movable pulley 12, so that the coating belt 3 can carry more flame retardant liquid.
[0032] Next, in order to make the smear belt 3 more stable during movement, the side surfaces of each spirally wound portion of the smear belt 3 can be made adjacent to and in contact with the corresponding side surfaces of the adjacent spirally wound portions, and a number of convex strips 5 can be used to make the side friction between the convex strips 5 make the smear belt 3 more stable when moving; due to the different thicknesses of different cables, the width of the smear belt 3 wrapped around the cable is different, and the "eight"-shaped structure of the smear belt 3 needs to be adjusted to ensure the stability of the smear belt 3 during movement. During adjustment, the two movable pulleys 12 can be driven to move in a straight line by starting the dual-axis electric push rod 14, so that the movable pulley 12 drives a part of the smear belt 3 close to it to move, and this part is the bottom of the "eight"-shaped structure, so that the "eight"-shaped structure of the smear belt 3 is adjusted to a suitable angle. It should be noted that the surfaces of the movable pulley 12 and the static pulley should be as follows Figure 10 The groove shown is shaped to limit the smear tape 3, and the edges of the groove are rounded to prevent damage to the smear tape 3.
[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A temporary flame retardant spraying device for cables, characterized by: The invention comprises a container (1) for containing a flame retardant, wherein a rotating wheel (2) for driving a coating belt (3) to rotate is installed in the container (1), one end of the coating belt (3) is spirally wound on the outer surface of the rotating wheel (2), and the other end is spirally wound on the outer surface of a cable, the spirally wound portion of the coating belt (3) is in a non-overlapping state, the two ends of the coating belt (3) are butted together to form a closed loop structure, the straight line portions extending from the starting and ending points of the spiral portion of the coating belt (3) are in a tangent state, and the straight line portions extending from the spiral portion of the coating belt (3) are in an "eight"-shaped structure, and the coating belt (3) moves along the axial direction of the cable during rotation.
2. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: The containing box (1) is a split structure.
3. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: Two spiral guide rails (4) are installed on the outer surface of the rotating wheel (2); the portion where the smear belt (3) contacts the rotating wheel (2) is located between the two guide rails (4); and the outer surface of the rotating wheel (2) is a circular convex structure.
4. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: A convex strip (5) having a guiding function is fixedly mounted on the smearing surface of the smearing strip (3); the cross section of the convex strip (5) is a triangular structure, and is used to squeeze one end of the cable to form a rounded corner.
5. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: The two ends of the smear tape (3) are butted together via Velcro (6), and the two ends of the smear tape (3) are relatively fixed.
6. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: The side surface of each spirally wound portion of the smear tape (3) is adjacent to and maintains a contact state with the corresponding side surface of an adjacent spirally wound portion.
7. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: Two notches (7) are provided in the box cover of the containing box (1), and the straight portion of the smear strip (3) is located in the notches (7).
8. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: A collecting box (8) fixed relative to the collecting box (1) is mounted on the box cover of the containing box (1), and an inclined scraper (9) is fixedly mounted on the outer side of the collecting box (8). The scraper (9) has an arc-shaped cross section, and one side of the scraper (9) is a sharp-angled structure and contacts the smearing surface of the smearing belt (3).
9. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: Both ends of the rotating wheel (2) are rotatably connected to the containing box (1), and the intersection of the rotating wheel (2) and the containing box (1) is sealed. One end of the rotating wheel (2) is connected to the power device (10), and its rotation is controlled by the power device (10).
10. The flame retardant temporary spraying device for cables according to claim 1, characterized in that: The portion of the smear belt (3) located in the receiving box (1) is a folded edge structure, and a fixed pulley (11) and a movable pulley (12) are installed at the folded edge of the smear belt (3). The central axis (13) of the fixed pulley (11) is rotationally connected to the receiving box (1), and the central axis (13) of the movable pulley (12) is slidingly connected to the receiving box (1), and the distance between the two movable pulleys (12) is adjusted by a double-axis electric push rod (14).