CN217736553U - Self-limiting temperature water hose - Google Patents

Abstract

The application relates to the technical field of water hose manufacturing, in particular to a self-temperature-limiting water hose. A self-temperature-limiting water hose comprises a water hose main body, wherein two ends of the water hose main body are fixedly connected with water hose joints; the water hose main body comprises a flexible inner pipe and a flexible outer pipe, and also comprises self-temperature-limiting heating cloth, wherein the self-temperature-limiting heating cloth is compounded between the flexible inner pipe and the flexible outer pipe; the self-temperature-limiting heating cloth comprises base cloth and a self-temperature-limiting heating wire; the self-temperature-limiting heating wire is used as a weft and is woven on the base cloth; the side wall of the water hose body is provided with a quick connector used for connecting a power supply; the quick connector is communicated with the self-temperature-limiting heating wire and the power supply to form a current loop. The application provides a self-limiting temperature hosepipe has self-limiting temperature heating effect, can not overheated destruction flexible inner tube and flexible outer tube, and heating factor of safety is high, and the relatively conventional heating hosepipe that adds, application safety factor is high.

Description

Self-temperature-limiting water hose

Technical Field

The application relates to the technical field of water hose manufacturing, in particular to a self-temperature-limiting water hose.

Background

The conventional water pipe fitting is suitable for climatic environments of 0-50 ℃, and the temperature of the conventional water pipe fitting is lower than 0 ℃, so that the conveyed water body is frozen and blocked, and the water body conveying is further influenced. Northern areas have low climate, the number of days of environmental climate below 0 ℃ all the year around is large, the conventional water conveying pipe fittings are frozen to block water body conveying, so that the water taking operation is not disturbed, and the water is not completely discharged after the water hoses are recycled, so that the water hoses are easy to freeze.

In order to solve the problem that the water pipe is easy to freeze and block in a low-temperature environment, a water hose in the related art is internally provided with a heating wire, and the water body is heated up in an electric heating mode, so that the problems that water taking is difficult and the water hose is easy to freeze are solved. However, the heating wires in the water hoses in the related art are constant-power metal heating wires, so that the weight is heavier, and the safety problem of over-temperature ignition is easily caused when the hose sections are curled.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a self-limiting temperature water band.

The application provides a self-limiting temperature hosepipe, is realized through following technical scheme:

a self-temperature-limiting water hose comprises a water hose main body, wherein two ends of the water hose main body are fixedly connected with water hose joints; the water hose main body comprises a flexible inner pipe and a flexible outer pipe, and also comprises self-temperature-limiting heating cloth, wherein the self-temperature-limiting heating cloth is compounded between the flexible inner pipe and the flexible outer pipe; the self-temperature-limiting heating cloth comprises base cloth and a self-temperature-limiting heating wire; the self-temperature-limiting heating wire is used as a weft and is woven on the base cloth; the side wall of the water hose body is provided with a quick connector used for connecting a power supply; the quick connector is communicated with the self-temperature-limiting heating wire and the power supply to form a current loop.

Through adopting above-mentioned technical scheme, the self-limiting heating cloth in this application has better self-limiting heating effect, has given the better self-limiting heating effect of self-limiting temperature hosepipe in this application, can not overheat and destroy flexible inner tube and flexible outer tube, and heating factor of safety is high, and conventional relatively adds the hot water zone, and factor of safety is high in service safety.

Preferably, the self-temperature-limiting heating cloth further comprises a first electrode connecting belt and a second electrode connecting belt, and the first electrode connecting belt and the second electrode connecting belt are both woven on the base cloth as warps; the self-temperature-limiting heating wire is in contact with the first electrode connecting belt and the second electrode connecting belt, and the quick connector is connected with the self-temperature-limiting heating wire, the first electrode connecting belt, the second electrode and the power strip to form a current loop.

By adopting the technical scheme, the self-temperature-limiting heating cloth is more convenient to cut and use, is applicable to various scenes, has better market prospect, is convenient for integral production and preparation, and reduces the production cost.

Preferably, one end of the first electrode connecting belt is communicated with a first electric lead; one end of the first electric lead, which faces away from the first electrode connecting belt, is connected with the positive electrode of a power supply; one end of the second electrode connecting belt is communicated with a second electric lead; one end of the second electric lead, which is back to the second electrode connecting belt, is connected with the negative pole of the power supply.

The connecting circuit in the application is simple in structure and convenient to produce, install, maintain and maintain integrally.

Preferably, the first electrode connecting strip and the second electrode connecting strip are identical in structure; taking the first electrode connecting belt as an example, the first electrode connecting belt comprises a plurality of conductive fiber yarns which are mutually parallel, and the conductive fiber yarns are woven in the base cloth as warps; the first electrode connecting belt and the second electrode connecting belt are respectively positioned at two side ends close to the warp direction of the base cloth; the conductive fiber wire is formed by twisting 6-10 nickel-plated copper wires with the diameter of 0.1 mm.

Through adopting above-mentioned technical scheme, can reduce the probability that the rupture takes place among the conductive fiber silk bending process, and then guarantee holistic safety in utilization and the stability in use of this application.

Preferably, an insulating heat-conducting flexible sealing layer is integrally formed between the flexible inner pipe and the flexible outer pipe; the self-temperature-limiting heating cloth is integrally formed in the insulating heat-conducting flexible sealing layer.

Through adopting above-mentioned technical scheme, can promote the heat transfer efficiency of this application, improve heat utilization rate, and give the better insulating flame retardant property of this application, the safety in utilization is better.

Preferably, the outer wall of the insulating and heat-conducting flexible sealing layer is wrapped with reinforcing mesh cloth; the reinforced gridding cloth is one of aramid fiber gridding cloth, glass fiber gridding cloth, carbon fiber gridding cloth, glass fiber/aramid fiber mixed gridding cloth and carbon fiber/aramid fiber mixed gridding cloth.

Through adopting above-mentioned technical scheme, can further promote the mechanical properties of this application, promote the durability and the life of this application.

Preferably, a heat insulation function layer is compounded between the insulation heat conduction flexible sealing layer and the flexible outer pipe; the heat insulation function layer is one of aerogel heat insulation felt, polyurethane foam cotton, polystyrene foam material, phenolic foam material and ceramic fiber blanket.

Through adopting above-mentioned technical scheme, can further promote the heat transfer efficiency of this application, improve heat utilization rate, and give the better insulating flame retardant property of this application, the safety in utilization is better.

Preferably, the self-temperature-limiting heating cloth further comprises a lamination layer, and the base cloth, the self-temperature-limiting heating wire, the first electrode connecting belt and the second electrode connecting belt are integrally formed inside the lamination layer; the thickness of the laminating layer is controlled to be 0.2-0.8mm; the material of the laminating layer is one of insulating flame-retardant silica gel, insulating heat-conducting silica gel, insulating flame-retardant silicone rubber, insulating heat-conducting TPU and insulating flame-retardant TPU.

Through adopting above-mentioned technical scheme, improve the pliability of self-limiting heating cloth, can reduce the probability that the rupture takes place among the conductive fiber silk bending process, and then guarantee holistic safety in utilization and the stability in use of this application. In addition, the self-temperature-limiting heating cloth is conveniently and compositely fixed on the outer wall of the flexible inner pipe, and the production difficulty is reduced.

Preferably, the self-temperature-limiting heating cloth further comprises a heat-insulating layer, an adhesive layer and release paper, wherein the heat-insulating layer is compounded on one surface of the laminating layer, and the adhesive layer is compounded on the other surface of the laminating layer; the release paper is compounded on the surface of the bonding layer opposite to the laminating layer.

Self-limiting heating cloth in this application is from taking heat preservation and tie coat, and the self-limiting heating cloth complex of being convenient for is fixed in flexible inner tube outer wall, reduces the production degree of difficulty, and setting up of heat preservation can improve holistic safety in utilization performance, thermal insulation performance, the insulating security performance of this application, improves heat utilization efficiency, reduces the ineffective loss.

Preferably, the self-temperature-limiting heating wire comprises a polyester yarn core wire and a self-temperature-limiting heating layer, and the self-temperature-limiting heating layer is coated on the outer wall of the polyester yarn core wire; the resistivity of the self-temperature-limiting heating wire is controlled to be 5 × 103-9 × 106 Ω × m; the self-temperature-limiting temperature of the self-temperature-limiting heating wire is 80-85 ℃.

By adopting the technical scheme, the mechanical strength of the self-temperature-limiting heating wire is better, the production difficulty of the self-temperature-limiting heating cloth is convenient to reduce, and the production cost is reduced. In addition, the self-temperature-limiting temperature is 80-85 ℃, so that the self-temperature-limiting effect is better, and the use safety coefficient is high.

In summary, the present application has the following advantages:

1. the application provides a self-limiting temperature hosepipe has self-limiting temperature heating effect, can not overheat and destroy flexible inner tube and flexible outer tube, and heating factor of safety is high, and the conventional relatively adds the hot water zone, and factor of safety is high in service.

2. The application has better mechanical property, longer service life and better use stability.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 in the present application.

Fig. 2 is a schematic structural view of a self-temperature-limiting heating cloth in embodiment 1 of the present application.

Fig. 3 is a schematic structural view of a self-temperature-limiting heating wire in embodiment 1 of the present application.

Fig. 4 is a schematic structural view of a self temperature limiting heating cloth in embodiment 2 of the present application.

Fig. 5 is a schematic structural view of a self temperature-limiting heating cloth in embodiment 3 of the present application.

Fig. 6 is a schematic view of the overall structure of embodiment 4 in the present application.

Fig. 7 is a schematic view of the layer structure of the self temperature limiting heating cloth in example 4 of this application.

Fig. 8 is a schematic view of the overall structure of embodiment 5 in the present application.

In the figure, 1, a flexible inner tube; 10. a hose body; 100. a hose coupling; 101. a quick connector; 2. a flexible outer tube; 3. self-limiting temperature heating cloth; 31. base cloth; 32. a self-limiting temperature heating wire; 321. a polyester yarn core wire; 322. a self-temperature-limiting heating layer; 33. a first electrode connecting strap; 330. conductive fiber filaments; 331. a first electrically conductive line; 34. a second electrode connecting strap; 341. a second electrically conductive line; 35. laminating the film layer; 36. a heat-insulating layer; 37. a bonding layer; 38. release paper; 4. an insulating heat-conducting flexible sealing layer; 5. reinforcing mesh cloth; 6. and a heat insulation functional layer.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples.

Example 1

Referring to fig. 1, the application discloses a self-temperature-limiting water hose, which comprises a water hose main body 10 and water hose connectors 100, wherein the water hose connectors 100 are fixedly connected to two ends of the water hose main body 10 and are convenient to connect with another section of self-temperature-limiting water hose.

Referring to fig. 1, the water hose body 10 includes a flexible inner pipe 1, a self-temperature-limiting heating cloth 3, an insulating heat-conducting flexible sealing layer 4 and a flexible outer pipe 2, wherein the self-temperature-limiting heating cloth 3 is compounded between the flexible inner pipe 1 and the insulating heat-conducting flexible sealing layer 4. Insulating heat conduction flexible sealing layer 4 integrated into one piece is between flexible inner tube 1, flexible outer tube 2, and from limit for temperature heating cloth 3 integrated into one piece in insulating heat conduction flexible sealing layer 4, and then can guarantee holistic heating security, insulating security, heating promptness and can promote heat utilization efficiency.

Referring to fig. 2, the self temperature-limiting heating cloth 3 includes a base cloth 31 and a self temperature-limiting heating wire 32. The base fabric 31 is a fabric that is flat-woven by warps and wefts, and the fabric is specifically a flat-woven structure. The warp and weft threads adopted in the base cloth 31 can be polyester threads or aramid threads. The density of warp threads in the base cloth 31 is 30-80 threads/10 cm, and the density of weft threads in the base cloth 31 is 30-80 threads/10 cm. Preferably, the density of the warp threads in the base fabric 31 is 60-80 threads/10 cm, and the density of the weft threads in the base fabric 31 is 60-80 threads/10 cm, so that the mechanical strength of the base fabric 31 can be ensured, and the overall mechanical strength can be improved. From limit temperature heater wire 32 snakelike sewing in base cloth 31 for from the comparatively evenly distributed of limit temperature heater wire 32 in base cloth 31, guarantee the heating homogeneity of this application. The side wall of the water hose main body 10 is provided with a quick connector 101 for connecting a power supply, the quick connector 101 is communicated with the self-temperature-limiting heating wire 32 and the power supply to form a current loop, the self-temperature-limiting heating wire 32 releases heat to heat the conveying water body, and then the conveying water body is prevented from being frozen and blocked.

The self-limiting heater wire 32 in this embodiment may be a commercially available PTC heater wire or a self-made self-limiting heater wire. When the self-limiting heating wire 32 is a self-made self-limiting heating wire, referring to fig. 3 and fig. 2, the self-made self-limiting heating wire includes a polyester filament core wire 321 and a self-limiting heating layer 322, and the self-limiting heating layer 322 is wrapped on the outer wall of the polyester filament core wire 321.

The formula of the self-made self-temperature-limiting heating wire comprises the following components: 600g of HDPE resin, 225g of EVA resin, 240g of PP resin, 270g of conductive carbon black, 8g of nickel powder, 60g of nano zinc oxide, 1.2g of PE wax, 1.5g of zinc stearate, 30g of antioxidant 1010, 22.5g of antioxidant 1024, 18.3g of antioxidant 626 and 24g of antioxidant 2246A.

The preparation method of the self-made self-temperature-limiting heating wire 32 comprises the following steps:

weighing HDPE resin, EVA resin and PP resin, drying, and weighing 600g of dried HDPE resin, 225g of dried EVA resin and 240g of dried PP resin for later use;

meanwhile, 270g of conductive carbon black, 8g of nickel powder, 60g of nano zinc oxide, 1.2g of PE wax, 1.5g of zinc stearate, 30g of antioxidant 1010, 22.5g of antioxidant 1024, 18.3g of antioxidant 626 and 24g of antioxidant 2246A are weighed for later use;

step two, mixing 600g of HDPE resin, 225g of EVA resin, 240g of PP resin, 270g of conductive carbon black, 8g of nickel powder, 60g of nano zinc oxide, 1.2g of PE wax, 1.5g of zinc stearate, 30g of antioxidant 1010, 22.5g of antioxidant 1024, 18.3g of antioxidant 626 and 24g of antioxidant 2246A in a high-speed dispersion kettle uniformly, and then placing the mixture into an internal mixer for internal mixing at 160 ℃ for 320 seconds, wherein the materials are in a flowing state for later use;

step three, placing the fluid material obtained in the step two into an extruder for melt extrusion, cooling and solidifying the extruded material, sending the solidified strip material into a granulator for granulation to obtain spinning master batches with the particle size of 2.0-2.2mm, and drying for later use;

and step four, extruding the spinning master batch at 160-170 ℃ by using the polyester yarn as the connecting and leading yarn, namely the polyester yarn core wire 321, attaching the extruded molten material to the outer surface of the polyester yarn, cooling by water, and drying to obtain the finished product self-temperature-limiting heating wire, wherein the resistivity of the obtained finished product self-temperature-limiting heating wire is 3.0 x 102 omega cm (20 ℃ at normal temperature, 65 RH).

The self-made self-temperature-limiting heating wire of 8cm is selected as a test object, the resistance of the self-made self-temperature-limiting heating wire is 2.41 x 103 omega (normal temperature is 20 ℃,65% RH), the power supply voltage is 220V, copper wires are adopted to connect the two ends of the self-temperature-limiting heating wire, and the resistance of the copper wires is 0.1 omega. And (3) power testing: the test was carried out using a German GMC-I seven-channel power tester. And (3) resistance testing: and testing by adopting a HIOKI resistance tester arranged on the day. A self-made self-temperature-limiting heating wire is subjected to continuous energization test, the ambient temperature is 23 ℃, the current is 91.30mA, and the starting power is 20.1W; the ambient temperature is 80 ℃, the current is 12.62mA, and the starting power is 2.78W. The ambient temperature is 85 ℃, the current is 4.31mA, and the starting power is 0.93W.

Therefore, the self-temperature-limiting temperature of the self-made self-temperature-limiting heating wire is 80-85 ℃, and the use safety performance is better.

The resistivity of the self-made self-temperature-limiting heating wire 32 can be controlled at 5 × 103-9 × 106 Ω × m, and the resistivity of the self-made self-temperature-limiting heating wire 32 is mainly controlled by changing the addition amount of the carbon black and the nickel powder. Thus, the selection of a suitable power supply may also control the overall heating power. The heating effect is designable, and the requirements of different customers are met. The self-temperature-limiting heating wire suitable for 12V, 36V, 220V and 400V power supplies can be prepared, and the requirements of different customers are met.

The preparation method of the self-temperature-limiting water band comprises the following steps:

firstly, a self-temperature-limiting heating wire 32 is sewn on a base cloth 31 in a snake shape and is obtained from a temperature-limiting heating cloth 3;

step two, hot-pressing insulating heat-conducting silica gel on the outer wall of the flexible outer tube 2, hot-pressing the self-temperature-limiting heating cloth 3 prepared in the step one on the outer surface of the insulating heat-conducting silica gel, and then hot-pressing and compounding another piece of insulating heat-conducting silica gel and the previous insulating heat-conducting silica gel to form the self-temperature-limiting heating cloth 3 in the insulating heat-conducting flexible sealing layer 4 to obtain a semi-finished water band;

and step three, sleeving the flexible outer pipe 2 on the outer wall of the semi-finished product water band, finishing a self-temperature-limiting heating line 32 in the self-temperature-limiting heating cloth 3, respectively connecting two ends of the self-temperature-limiting heating line 32 to the quick connectors 101, filling sealing silica gel in a gap between the flexible outer pipe 2 and the semi-finished product water band, and finally fixedly connecting two ends of the water band to the upper water band connectors 100 to obtain the finished product self-temperature-limiting water band.

Example 2

Example 2 differs from example 1 in that:

referring to fig. 4, the self temperature limiting heating cloth 3 includes a base cloth 31, a self temperature limiting heating wire 32, a first electrode connection strap 33, and a second electrode connection strap 34. The number of the self-temperature-limiting heating wires 32 is more than or equal to 2, and the self-temperature-limiting heating wires 32 are woven on the base cloth 31 as weft. The distance between the adjacent self-temperature-limiting heating wires 32 is controlled to be 8-12mm. The vertical spacing between adjacent self-limiting heating wires 32 in this embodiment is controlled to be 8-9mm. The self-limiting temperature heating wire 32 in this embodiment may be a commercially available PTC heating wire or a self-made self-limiting temperature heating wire 32.

Referring to fig. 4, the first electrode connecting strips 33 and the second electrode connecting strips 34 are both woven as warp threads on the base cloth 31, and the first electrode connecting strips 33 and the second electrode connecting strips 34 are respectively located at both side ends in the warp direction near the base cloth 31. The self-temperature-limiting heating wire 32 is in contact with the first electrode connecting belt 33 and the second electrode connecting belt 34, the first electrode connecting belt 33, the self-temperature-limiting heating wire 32 and the second electrode connecting belt 34 are communicated with a power supply to form a current loop, and the self-temperature-limiting heating wire 32 releases heat to heat the water conveying body.

Referring to fig. 4, the first electrode connecting strap 33 and the second electrode connecting strap 34 have the same structure. Taking the first electrode connecting belt 33 as an example, the first electrode connecting belt 33 includes a plurality of conductive fiber wires 330 arranged side by side, and the number of the conductive fiber wires 330 depends on the size of the self-temperature-limiting heating cloth 3 and the designed heating power of the water belt. The conductive fiber wire 330 is woven in the base cloth 31 as warp, so that the self-temperature-limiting heating wire 32, the first electrode connecting band 33, the second electrode connecting band 34 and the power supply form a current loop, and the self-temperature-limiting heating wire 32 releases heat to heat the water conveying body. The conductive fiber wire 330 in the application is formed by twisting 6-10 nickel-plated copper wires Z with the diameter of 0.1mm, so that the conductive fiber wire 330 is not easy to break in the use process, and the service life of the application is prolonged. In this embodiment, 7 nickel-plated copper wires Z with a diameter of 0.1mm are twisted to form the conductive fiber wires 330.

Referring to fig. 4 in conjunction with fig. 1, one end of the first electrode connecting strip 33 is fixedly connected with a first electrical lead 331 through a copper buckle, and one end of the first electrical lead 331, which faces away from the first electrode connecting strip 33, is connected to the quick connector 101. One end of the second electrode connecting strip 34 is connected with a second electrical lead 341, and one end of the second electrical lead 341 opposite to the second electrode connecting strip 34 is connected with the quick connector 101. The quick connector 101 is connected with a power supply in an inserted mode, so that the first electrode connecting belt 33, the self-temperature-limiting heating wire 32, the second electrode connecting belt 34 and the power supply form a current loop, and the self-temperature-limiting heating wire 32 releases heat to heat the conveying water body. The voltage of the power supply can be selected to be 12 volts, 36 volts, 220 volts, 400 volts according to the wire resistance of the self-temperature-limiting heating wire 2.

The preparation method of the self-limiting temperature water band comprises the following steps:

s1, preparing a self-temperature-limiting heating cloth 3;

s1.1, preparing a self-temperature-limiting heating wire;

s1.2, weaving self-temperature-limiting heating cloth 3 by using polyester yarns and 7 x 0.1mm nickel-plated twisted copper wires as warps and using the polyester yarns and finished product self-temperature-limiting heating wires as wefts;

s2, insulating heat-conducting silica gel is hot-pressed on the outer wall of the flexible inner tube 1, the self-temperature-limiting heating cloth 3 is hot-pressed on the outer wall of the insulating heat-conducting silica gel, then another insulating heat-conducting silica gel is hot-pressed on the outer wall of the self-temperature-limiting heating cloth 3, a first electrode connecting belt 33 and a second electrode connecting belt 34 are reserved on the end sides of the self-temperature-limiting heating cloth 3 in the warp direction, wiring operation is facilitated, the two pieces of insulating heat-conducting silica gel are hot-pressed to form an insulating heat-conducting flexible sealing layer 4, and the self-temperature-limiting heating cloth 3 is formed in the insulating heat-conducting flexible sealing layer 4, so that a semi-finished tube is obtained;

s3, the flexible outer pipe 2 is sleeved on the outer wall of the semi-finished pipe, the first electrode connecting band 33 is connected with the first electric lead 331, the second electrode connecting band 34 is connected with the second electric lead 341, the first electric lead 331 and the second electric lead 341 are connected with the quick connector 101, and then sealing silica gel is filled in a gap between the flexible outer pipe 2 and the semi-finished pipe, so that the finished self-temperature-limiting water band is obtained.

Example 3

Example 3 differs from example 2 in that:

referring to fig. 5, the self-temperature-limiting heating cloth 3 further includes a lamination layer 35, and the base cloth 31, the self-temperature-limiting heating wire 32, the first electrode connection tape 33, and the second electrode connection tape 34 are integrally formed inside the lamination layer 35. The thickness of the laminated layer 35 is controlled to be 0.2-0.8mm. In this embodiment, the thickness of the PE-coated layer 35 is controlled to be 0.5-0.6mm. The function of the lamination layer 35 is to avoid bending and breaking of the conductive fiber filaments 330 and improve the flexibility of the present application.

Referring to fig. 5, the material of the curtain coating layer 35 is one of insulating flame-retardant silica gel, insulating heat-conducting silica gel, insulating flame-retardant silicone rubber, insulating heat-conducting TPU, and insulating flame-retardant TPU. The application adopts the insulating heat-conducting TPU with Shore hardness of 70-75A.

The preparation method of the self-temperature-limiting heating cloth comprises the following steps: firstly, preparing a self-temperature-limiting heating wire; then weaving a self-temperature-limiting heating fabric by using polyester yarns, 7-by-0.1mm nickel-plated twisted copper wires as warps and polyester yarns and finished self-temperature-limiting heating wires as wefts; preparing a laminating material, wherein the laminating material is composed of 95 parts of commercially available TPU resin with Shore hardness of 70A and 5 parts of insulating heat-conducting filler with granularity controlled to be 1-10 microns; and finally, the self-temperature-limiting heating fabric is subjected to scutching and tension adjustment in sequence, then double-sided film coating is carried out, the film coating material is extruded by a double-head film coating machine and is pressed on the upper surface and the lower surface of the self-temperature-limiting heating fabric under the action of a pressing roller, and then the film coating material is cooled and solidified on the upper surface and the lower surface of the self-temperature-limiting heating fabric through three groups of cooling rollers and speed regulating rollers to form a film coating layer 35, so that the finished product self-temperature-limiting heating fabric is obtained.

Example 4

Example 4 differs from example 3 in that:

referring to fig. 6 and 7, a thermal insulation layer 36 is thermally laminated on one surface of the self-temperature-limiting heating cloth 3 through a polyurethane hot melt adhesive. The other surface of the self-temperature-limiting heating cloth 3 is coated with an adhesive by blade coating and is solidified to form an adhesive layer 37. The surface of the adhesive layer 37 opposite to the laminating layer 35 is compounded with release paper 38, and the release paper 38 is silicone oil release paper. The adhesive layer 37 is preferably a thermally conductive insulating glue. And the water hose main body 10 is not provided with the insulating heat-conducting flexible sealing layer 4. The bonding layer 37, the self-limiting heating cloth 3 and the heat preservation layer 36 are positioned between the flexible inner pipe 1 and the flexible outer pipe 2.

The preparation method of the self-limiting temperature water band comprises the following steps:

s1, preparing a self-temperature-limiting heating cloth 3:

s1.1, preparing a self-temperature-limiting heating wire;

s1.2, weaving a self-temperature-limiting heating fabric by using polyester yarns and 7-x 0.1mm nickel-plated twisted copper wires as warps and using the polyester yarns and finished self-temperature-limiting heating wires as wefts;

preparing a laminating material, wherein the laminating material is composed of 95 parts of commercially available TPU resin and 5 parts of aluminum hydroxide with the granularity controlled between 1 and 10 micrometers;

s1.3, performing scutching and tension adjustment on the self-temperature-limiting heating fabric in sequence, then performing double-sided film coating, extruding film coating materials through a double-head film coating machine, pressing and coating the upper and lower surfaces of the self-temperature-limiting heating fabric under the action of a pressing roller, then sequentially passing through three groups of cooling rollers and speed regulating rollers, and cooling and solidifying the film coating layers on the upper and lower surfaces of the self-temperature-limiting heating fabric to obtain a finished product of self-temperature-limiting heating fabric;

s1.4, inputting the finished product self-temperature-limiting heating cloth into a compound machine, scraping and coating an adhesive on one surface of the finished product self-temperature-limiting heating cloth to form a pressure-sensitive adhesive layer, then pressing silicone oil release paper on the surface of the pressure-sensitive adhesive layer, then scraping and coating a hot melt adhesive on the other surface of the finished product self-temperature-limiting heating cloth, heating and pressing aerogel felt cloth on the surface of the finished product self-temperature-limiting heating cloth, and rolling to obtain a final self-temperature-limiting heating cloth product;

s2, tearing off release paper 38, attaching the bonding layer 37 in the self-temperature-limiting heating cloth 3 to the outer wall of the flexible inner tube 1, and reserving a first electrode connecting belt 33 and a second electrode connecting belt 34 at the end sides of the self-temperature-limiting heating cloth 3 in the warp direction for facilitating wiring operation to obtain a semi-finished product;

and S3, sleeving the flexible outer pipe 2 on the outer wall of the semi-finished product, connecting the first electrode connecting band 33 with the first electric lead 331, connecting the second electrode connecting band 34 with the second electric lead 341, connecting the first electric lead 331 and the second electric lead 341 with the quick connector 101, and filling sealing silica gel in a gap between the flexible outer pipe 2 and the heat-insulating layer 36 of the semi-finished product to obtain the finished self-limiting temperature water band.

Example 5

Example 5 differs from example 4 in that:

referring to fig. 8, the hose body 10 is provided with an insulating thermally conductive flexible sealing layer 4. The insulating heat-conducting flexible sealing layer 4 is composed of two insulating heat-conducting flexible silica gel sheets, and the self-temperature-limiting heating cloth 3 is compounded between the two insulating heat-conducting flexible silica gel sheets. The outer wall of the insulating heat-conducting flexible sealing layer 4 is coated with reinforced gridding cloth 5. The reinforced gridding cloth 5 is one of aramid fiber gridding cloth, glass fiber gridding cloth, carbon fiber gridding cloth, glass fiber/aramid fiber mixed gridding cloth and carbon fiber/aramid fiber mixed gridding cloth. Aramid fiber mesh cloth adopted in the embodiment.

Referring to fig. 8, a heat insulation function layer 6 is compounded between the reinforced gridding cloth 5 and the flexible outer pipe 2. The heat insulation functional layer 6 is one of aerogel heat insulation felt, polyurethane foam, polystyrene foam, phenolic foam and ceramic fiber blanket. In this embodiment, the heat insulation function layer 6 is an aerogel heat insulation felt. The reinforced gridding cloth 5 is positioned between the insulating heat-conducting flexible sealing layer 4 and the heat-insulating functional layer 6. And the heat insulation functional layer 6 is positioned between the reinforced gridding cloth 5 and the flexible outer pipe 2.

The preparation method of the self-limiting temperature water band comprises the following steps:

s1, preparing a self-temperature-limiting heating cloth 3, which comprises the following steps:

s1.1, preparing a self-temperature-limiting heating wire;

s1.2, weaving a self-temperature-limiting heating fabric by using polyester yarns and 7-x 0.1mm nickel-plated twisted copper wires as warps and using the polyester yarns and finished self-temperature-limiting heating wires as wefts;

preparing a laminating material, wherein the laminating material is composed of 95 parts of commercially available TPU resin and 5 parts of aluminum hydroxide with the granularity controlled between 1 and 10 microns;

s1.3, the self-temperature-limiting heating fabric is subjected to scutching and tension adjustment in sequence, then double-sided film coating is carried out, a film coating material is extruded out through a double-head film coating machine and is pressed on the upper surface and the lower surface of the self-temperature-limiting heating fabric under the action of a pressing roller, then the upper surface and the lower surface of the self-temperature-limiting heating fabric pass through three groups of cooling rollers and speed regulating rollers in sequence, and the film coating layer is formed on the upper surface and the lower surface of the self-temperature-limiting heating fabric through cooling and solidification to obtain a finished product of the self-temperature-limiting heating fabric;

s1.4, inputting the finished product self-temperature-limiting heating cloth into a compound machine, scraping and coating an adhesive on one surface of the finished product self-temperature-limiting heating cloth to form a pressure-sensitive adhesive layer, then pressing silicone oil release paper on the surface of the pressure-sensitive adhesive layer, then scraping and coating a hot melt adhesive on the other surface of the finished product self-temperature-limiting heating cloth, heating and pressing aerogel felt cloth on the surface of the finished product self-temperature-limiting heating cloth, and rolling to obtain a final self-temperature-limiting heating cloth product;

s2, firstly, hot-pressing an insulating heat-conducting flexible silica gel sheet on the outer wall of the flexible inner tube 1, then tearing release paper 38, attaching a bonding layer 37 in the self-temperature-limiting heating cloth 3 to the outer wall of the insulating heat-conducting flexible silica gel sheet, reserving a first electrode connecting belt 33 and a second electrode connecting belt 34 at the end sides of the warp direction of the self-temperature-limiting heating cloth 3 for facilitating wiring operation, then hot-pressing the insulating heat-conducting flexible silica gel sheet on the outer wall of the aerogel felt to form an insulating heat-conducting flexible silica gel sheet, then coating aramid fiber gridding cloth on the outer wall of the insulating heat-conducting flexible silica gel sheet to form a reinforced gridding cloth 5, and then coating an aerogel heat-insulating felt on the outer wall of the aramid fiber gridding cloth to form a heat-insulating heat-preserving functional layer 6 to obtain a semi-finished water band;

and S3, sleeving the flexible outer pipe 2 on the outer wall of the semi-finished water band, connecting the first electrode connecting band 33 with the first electric lead 331, connecting the second electrode connecting band 34 with the second electric lead 341, connecting the first electric lead 331 and the second electric lead 341 with the quick connector 101, and filling sealing silica gel in a gap between the flexible outer pipe 2 and the semi-finished heat-insulating layer 36 to obtain the finished self-limiting water band.

The embodiments of the present invention are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A self-temperature-limiting water hose comprises a water hose main body (10), wherein water hose joints (100) are fixedly connected to two ends of the water hose main body (10); the water hose main body (10) comprises a flexible inner pipe (1) and a flexible outer pipe (2), and is characterized in that: the water hose main body (10) further comprises self-temperature-limiting heating cloth (3), and the self-temperature-limiting heating cloth (3) is compounded between the flexible inner pipe (1) and the flexible outer pipe (2); the self-temperature-limiting heating cloth (3) comprises a base cloth (31) and a self-temperature-limiting heating wire (32); the self-temperature-limiting heating wire (32) is used as a weft and is woven on the base cloth (31); the side wall of the water hose main body (10) is provided with a quick connector (101) for connecting a power supply; the quick connector (101) is communicated with the self-temperature-limiting heating wire (32) and the power supply to form a current loop.

2. A self-limiting warm water hose according to claim 1, characterized in that: the self-temperature-limiting heating cloth (3) further comprises a first electrode connecting belt (33) and a second electrode connecting belt (34), and the first electrode connecting belt (33) and the second electrode connecting belt (34) are woven on the base cloth (31) as warps; the self-temperature-limiting heating wire (32) is in contact with the first electrode connecting belt (33) and the second electrode connecting belt (34), and the quick connector (101) is communicated with the self-temperature-limiting heating wire (32), the first electrode connecting belt (33), the second electrode connecting belt (34) and the power supply to form a current loop.

3. A self-limiting temperature water hose according to claim 2, wherein: one end of the first electrode connecting belt (33) is communicated with a first electric lead (331); one end of the first electric lead (331) opposite to the first electrode connecting belt (33) is connected with a quick connector (101); one end of the second electrode connecting belt (34) is communicated with a second electric lead (341); the end of the second electrical conductor (341) facing away from the second electrode connecting strip (34) is connected to the quick connector (101).

4. A self-limiting warm water hose according to claim 2 or 3, characterized in that: the first electrode connecting belt (33) and the second electrode connecting belt (34) have the same structure; taking the first electrode connecting belt (33) as an example, the first electrode connecting belt (33) comprises a plurality of conductive fiber wires (330) which are mutually arranged side by side, and the conductive fiber wires (330) are woven in the base cloth (31) as warps; the first electrode connecting belt (33) and the second electrode connecting belt (34) are respectively positioned at two side ends close to the warp direction of the base cloth (31); the conductive fiber filaments (330) are formed by twisting 6-10 nickel-plated copper filaments with the diameter of 0.1 mm.

5. A self-limiting warm water hose according to claim 1, characterized in that: an insulating heat-conducting flexible sealing layer (4) is integrally formed between the flexible inner pipe (1) and the flexible outer pipe (2); the self-limiting heating cloth (3) is integrally formed in the insulating heat-conducting flexible sealing layer (4).

6. A self-limiting warm water hose according to claim 5, characterized in that: the outer wall of the insulating heat-conducting flexible sealing layer (4) is coated with reinforced mesh cloth (5); the reinforced gridding cloth (5) is aramid fiber gridding cloth, glass fiber gridding cloth, carbon fiber gridding cloth, glass fiber/aramid fiber mixed-woven gridding cloth or carbon fiber/aramid fiber mixed-woven gridding cloth.

7. A self-limiting warm water hose according to claim 6, characterized in that: a heat insulation functional layer (6) is compounded between the insulating and heat conduction flexible sealing layer (4) and the flexible outer pipe (2); the heat insulation functional layer (6) is one of an aerogel heat insulation felt, polyurethane foam cotton, a polystyrene foam material, a phenolic foam material and a ceramic fiber blanket.

8. A self-limiting warm water hose according to claim 2 or 3, characterized in that: the self-temperature-limiting heating cloth (3) further comprises a laminating layer (35), and the base cloth (31), the self-temperature-limiting heating wire (32), the first electrode connecting belt (33) and the second electrode connecting belt (34) are integrally formed inside the laminating layer (35); the thickness of the laminating layer (35) is controlled to be 0.2-0.8mm; the material of the laminating layer (35) is one of insulating flame-retardant silica gel, insulating heat-conducting silica gel, insulating flame-retardant silicone rubber, insulating heat-conducting TPU and insulating flame-retardant TPU.

9. A self-limiting temperature water hose according to claim 6, wherein: the self-temperature-limiting heating cloth (3) further comprises a heat-insulating layer (36), an adhesive layer (37) and release paper (38), wherein the heat-insulating layer (36) is compounded on one surface of the laminating film layer (35), and the adhesive layer (37) is compounded on the other surface of the laminating film layer (35); the release paper (38) is compounded on the surface of the adhesive layer (37) back to the laminating layer (35).

10. A self-limiting warm water hose according to claim 1, characterized in that: the self-temperature-limiting heating wire (32) comprises a polyester yarn core wire (321) and a self-temperature-limiting heating layer (322), and the self-temperature-limiting heating layer (322) is coated on the outer wall of the polyester yarn core wire (321); the resistivity of the self-temperature-limiting heating wire (32) is controlled to be 5 × 103-9 × 106 Ω × m; the self-temperature-limiting temperature of the self-temperature-limiting heating wire (32) is 80-85 ℃.

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