An improved type of leak-proof hose

Abstract

This invention discloses an improved leak-proof hose, which is a flexible hose body consisting of a braided outer layer and an inner lining layer hot-pressed together. The braided outer layer is a double-layered integrated structure woven from flame-retardant filaments and metal wires. The inner lining layer is attached to the inner wall of the braided outer layer. The leak-proof hose has a plurality of seepage holes evenly distributed on it, with the seepage holes being smaller on the outside and larger on the inside. The outer layer of this invention is made of flame-retardant material, and the seepage holes inside allow water to seep out when there is water inside, keeping the outer surface of the hose moist at all times. This protects the hose, extends its service life, and is scientifically prepared, convenient and practical to use, making it worthy of promotion.

Description

Technical Field

[0001] This invention belongs to the field of fire hose technology, specifically relating to an improved leak-proof hose. Background Technology

[0002] In the event of forest fires or mega-fires, due to the large burning area, fire hoses will travel a long distance during the firefighting process. However, the ash on the ground at the fire scene often contains sparks and is very hot. Traditional fire hoses are often burned and damaged during firefighting, which affects the progress of firefighting. Therefore, it is necessary to develop a new type of fire hose to solve this technical problem. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses an improved leak-proof hose. The outer layer is made of flame-retardant material, and the interior has seepage holes. When there is water inside, water will seep outward, keeping the outer surface of the hose constantly moist, thus protecting the hose and extending its service life.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] An improved leak-proof hose is a hose body consisting of a braided outer layer and an inner lining layer that are hot-pressed together. The braided outer layer is a double-layered integrated structure woven from flame-retardant filaments and metal wires. The inner lining layer is attached to the inner wall of the braided outer layer. The leak-proof hose has a number of seepage holes evenly distributed on it, with the seepage holes being smaller on the outside and larger on the inside.

[0006] As an improvement of the present invention, the elongation and expansion rate of the leakage strip are both ≤3%.

[0007] As an improvement of the present invention, the outer woven layer is a plain weave or a twill weave.

[0008] As an improvement of the present invention, the seepage hole is a frustum or cone shape with a concave side.

[0009] As an improvement of the present invention, the outer diameter of the seepage hole is ≤0.5mm.

[0010] The processing method of the improved leak-proof hose described in this invention includes the following steps:

[0011] (1) A double-layered integrated structure made by twisting flame-retardant filament and metal wire together and weaving them on a circular loom;

[0012] (2) Extrude the inner lining rubber tube using an extruder;

[0013] (3) Slide the inner lining rubber tube over the braided outer layer, fix and seal both ends, and introduce steam at ≤1Mpa. After 60min-80min, stop the steam input, maintain pressure and cool to 40℃, then open both ends.

[0014] (4) Move the prepared water-permeable hose horizontally in a pulse-like manner between two sets of rollers. The temperature of the outer inner lining rubber hose should not be lower than 30℃. When the water-permeable hose stops, move the needle positions of the upper and lower needle plates at the upper and lower positions of the hose up and down to puncture the inner lining and the braided outer layer. The needle heads on the upper and lower needle plates are conical with convex sides. The needles puncture the braided outer layer by 0.5-1mm and stay for 2-3s.

[0015] (5) Turn the water hose over after step (4) so ​​that the outer woven layer is exposed and the inner lining layer is hidden inside.

[0016] As an improvement to the processing method of the present invention, the inner lining layer is made of polyurethane, polyester, or other thermoplastic elastomer materials.

[0017] As an improvement to the processing method of the present invention, the flame-retardant filament is polyester, nylon or other high-strength fiber filament.

[0018] As an improvement to the processing method of the present invention, the metal wire is a copper wire.

[0019] As an improvement to the processing method of the present invention, a heating plate is provided on the outer layer of the upper needle plate and the lower needle plate.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention discloses an improved leak-proof hose with an outer layer made of flame-retardant material and an inner surface with recessed seepage holes. When there is water inside, water will seep out, keeping the outer surface of the hose moist and protecting it from burns or scalds, thus extending its service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the leakage hose described in this invention.

[0023] Figure 2 This is a diagram showing the working state of the water-permeable belt when making seepage holes, as described in this invention.

[0024] Figure 3 This is a comparison image of the front and back of the water leakage hose as described in this invention.

[0025] List of identifiers in attached diagrams:

[0026] 1. Water hose body; 2. Braided outer layer; 3. Inner lining layer; 4. Water seepage holes; 5. Roller; 6. Upper needle plate; 7. Lower needle plate; 8. Needle; 9. Side protrusion of needle; 10. Heating plate. Detailed Implementation

[0027] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] like Figure 1 As shown, the improved leak-proof hose of the present invention has a structure consisting of a flexible hose body 1 formed by hot-pressing a braided outer layer 2 and an inner lining layer 3 together. The braided outer layer 2 is a double-layered integrated structure woven from flame-retardant filaments and metal wires. The inner lining layer 3 is attached to the inner wall of the braided outer layer 2. The leak-proof hose has a plurality of seepage holes 4 evenly arranged on it, with the seepage holes 4 being smaller on the outside and larger on the inside. The outer layer of the present invention is made of flame-retardant material, and the inside has seepage holes with recessed sides. When there is water inside, water will seep outward, keeping the outer surface of the hose moist at all times. This can protect the hose from burning or scalding and extend its service life.

[0029] The woven outer layer 2 of the present invention is woven from flame-retardant filaments and metal wires, using plain or twill weave. The flame-retardant filaments are polyester, nylon or other high-strength fiber filaments, and the metal wires are copper wires (to increase rigidity). It is woven into a double-layer integrated structure using a circular loom, which has a good fire-resistant effect and represents an improvement in materials.

[0030] The inner lining layer 3 of the present invention is made of polyurethane, polyester or other thermoplastic elastomer materials. After being hot-pressed with the woven outer layer 2, the elongation and expansion rate of the entire leaking water hose are both ≤3%, ensuring good pressure bearing effect of the water hose and that the water jet can be sprayed further when fighting fires.

[0031] This invention features a plurality of evenly spaced seepage holes 4 on the leak-proof hose. The seepage holes 4 are arranged from the inside out, with the outer holes being smaller than the inner holes and the sides being concave. As long as there is water inside the hose, it will seep outwards. Moreover, the seepage holes 4 are larger on the inside and smaller on the outside, so not only will water rush to the outer surface of the woven outer layer 2, but water that cannot drain out in time will also seep into the interior of the woven outer layer 2 (because the woven outer layer 2 has a thickness and a small outer outlet with an outer diameter of only ≤0.5mm, water that cannot drain out will seep into places that can seep in, and thus it will seep into the interior of the woven outer layer 2). In this way, the hose surface has a large amount of water, making it difficult to be burned.

[0032] During firefighting, once water is injected into the hose, the internal pressure of the hose will increase, the seepage hole 4 will be expanded, and the amount of water seeping in will be greater, thus better protecting the hose.

[0033] The present invention changes the seepage hole 4 to a frustum or cone shape with a concave side. The concave side will store more water, and the seepage volume will be greater, thus further protecting the water hose.

[0034] The processing method of the improved leak-proof hose described in this invention includes the following steps:

[0035] (1) The flame-retardant filament and metal wire are twisted together and woven into a double-layer integrated structure using a circular loom to form the outer woven layer 2;

[0036] (2) Extrude the inner lining layer 3 rubber tube using an extruder;

[0037] (3) The inner lining layer 3 is sleeved on the outside of the braided outer layer 2, and the two ends are fixed and sealed. Steam of ≤1Mpa is introduced. After 60min-80min, the steam is stopped and the pressure is maintained and cooled to 50℃. The two ends are then opened. This process is different from all previous processes (the general process is to turn it over, with the braided outer layer 2 on the outside and the inner lining layer 3 on the inside). The hot pressing of this invention is convenient for step (4) to punch holes.

[0038] (4) Move the prepared leak-proof hose horizontally in a pulse-like motion between the two sets of rollers 5. The temperature of the outer inner lining layer 3 rubber tube should not be lower than 30℃ (the rubber tube softens, making it easier to puncture). When the leak-proof hose stops, the puncture positions of the upper needle plate 6 and the lower needle plate 7 at the upper and lower positions of the hose are staggered and moved up and down to puncture the inner lining layer and the braided outer layer. The puncture heads on the upper and lower needle plates are conical with convex sides. The puncture needle 8 punctures the braided outer layer by 0.5-1mm and stays for 2-3s. Figure 2 As shown;

[0039] (5) Turn the water hose over after step (4) so ​​that the outer woven layer 2 is exposed on the outside and the inner lining layer 3 is hidden inside, as shown. Figure 3 As shown, the seepage hole becomes a truncated cone shape with a smaller outer diameter and a larger inner diameter, and the side is concave.

[0040] In step (4), the leakage hose moves horizontally in a pulse-like manner between the two sets of rollers 5, moving a distance, pausing for a few seconds, then moving forward a distance again, pausing for a few seconds, and so on.

[0041] In step (4), the positions of the upper and lower needles are staggered so that they do not touch the top bend.

[0042] In step (4), the upper needle plate 6 and the lower needle plate 7 are provided with heating plates on their outer layers, which can heat the needle 8, which is inserted into the inner lining layer 3 rubber tube and the braided outer layer by 0.5-1mm and stays for 2-3s, so that it forms a cone hole that cannot be automatically closed, ensuring that water can be permanently seeped in.

[0043] It should be noted that the above content merely illustrates the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, various improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. An improved type of leak-proof hose, characterized in that: The leak-proof hose is a flexible hose body consisting of a braided outer layer and an inner lining layer that are hot-pressed together. The braided outer layer is a double-layered integrated structure woven from flame-retardant filaments and metal wires, and the braided outer layer is plain or twill woven. The inner lining layer is attached to the inner wall of the braided outer layer. The elongation and expansion rate of the leak-proof hose are both ≤3%. The leak-proof hose has a number of seepage holes evenly distributed on it, with the seepage holes being smaller on the outside and larger on the inside. The seepage holes are truncated cones or conical shapes with concave sides.

2. The improved water-permeable hose according to claim 1, characterized in that: The outer diameter of the seepage hole is ≤0.5mm.

3. The processing method of the improved leak-proof hose according to claim 1, characterized in that: Includes the following steps: (1) Combine flame-retardant filament and metal wire, twist them together, and weave them into a double-layer integrated structure using a circular loom; (2) Extrude the inner lining tube using an extruder; (3) Place the inner lining tube over the outer layer of the braided outer layer, fix and seal both ends, and introduce steam at ≤1Mpa. After 60min-80min, stop the steam input, maintain pressure, and cool to 40℃ before opening both ends; (4) Move the prepared leak-proof hose horizontally in a pulse-like motion between two sets of rollers. The temperature of the outer inner lining tube should not be lower than 30℃. When the leak-proof hose stops, move the needle positions of the upper and lower needle plates at the upper and lower positions of the hose up and down to puncture the inner lining and the braided outer layer. The needle heads on the upper and lower needle plates are conical with convex sides, and the needles puncture the braided outer layer by 0.5-1mm; (5) Turn the hose over after step (4) so ​​that the braided outer layer is exposed and the inner lining is hidden inside.

4. The processing method of the improved leak-proof hose according to claim 3, characterized in that: The inner lining is made of polyurethane, polyester, or other thermoplastic elastomer materials.

5. The processing method of the improved leak-proof hose according to claim 3, characterized in that: The flame-retardant filament is made of polyester, nylon, or other high-strength fiber filaments.

6. The processing method of the improved leak-proof hose according to claim 3, characterized in that: The metal wire is a copper wire.

7. The processing method of the improved leak-proof hose according to claim 3, characterized in that: Heating plates are provided on the outer layers of the upper and lower needle plates.

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