阅读说明：本技术 一种煤矿专用高压聚氨酯软管 (Special high-pressure polyurethane hose for coal mine ) 是由 张永 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种煤矿专用高压聚氨酯软管,包括聚氨酯内管,所述聚氨酯内管的外壁粘接有编制纤维层,所述编制纤维层的外壁植入有钢丝层,所述钢丝层的外表面包覆有聚氨酯外管,所述聚氨酯外管的外表面外壁涂覆有防腐涂层,通过在使用硬度为70-72A的聚氨酯颗粒挤出聚氨酯内管和聚氨酯外管,能够保证聚氨酯软管的柔软程度,并且在聚氨酯软管中设置编制纤维层和钢丝层能够提高该聚酯软管所能够承受的压力,同时在聚氨酯外观的表面通过涂覆设备涂抹一层以环氧树脂复合涂料为原料的防腐涂层能够有效的提高该软管的使用寿命。(The invention discloses a high-pressure polyurethane hose special for a coal mine, which comprises a polyurethane inner pipe, wherein a woven fiber layer is bonded on the outer wall of the polyurethane inner pipe, a steel wire layer is implanted into the outer wall of the woven fiber layer, a polyurethane outer pipe is coated on the outer surface of the steel wire layer, an anticorrosive coating is coated on the outer surface of the polyurethane outer pipe, the polyurethane inner pipe and the polyurethane outer pipe are extruded by using polyurethane particles with the hardness of 70-72A, the flexibility degree of the polyurethane hose can be ensured, the woven fiber layer and the steel wire layer are arranged in the polyurethane hose, the pressure which can be borne by the polyester hose can be improved, and meanwhile, the service life of the hose can be effectively prolonged by coating an anticorrosive coating which takes epoxy resin composite coating as a raw material on the appearance surface of the polyurethane through coating equipment.)

1. The high-pressure polyurethane hose special for the coal mine comprises a polyurethane inner pipe (100), and is characterized in that a woven fiber layer (200) is bonded on the outer wall of the polyurethane inner pipe (100), a steel wire layer (300) is implanted into the outer wall of the woven fiber layer (200), a polyurethane outer pipe (400) is coated on the outer surface of the steel wire layer (300), and an anti-corrosion coating (500) is coated on the outer surface of the polyurethane outer pipe (400);

the polyurethane hose is prepared by the following steps:

the method comprises the following steps: selecting colorless and transparent dry polyurethane particles, and starting an extruder to preheat the extruder for 20-30 min;

step two: after preheating is finished, pouring polyurethane particles into an extruder through a hopper, starting a power device of the extruder after the polyurethane particles are melted, and slowly extruding materials;

step three: respectively extruding a polyurethane outer pipe (400) and a polyurethane inner pipe (100) on the outer surface of the steel wire layer (300) and the inner surface of the woven fiber layer (200) through an extruder, leading out a hose through a traction device, passing through a vacuum device, conveying the hose to the traction device through a cooling water tank, and simultaneously starting the vacuum device to adjust pressure so as to form the hose;

step four: at the moment, the hose is placed on a coating device, and the outer surface of the hose is coated with a layer of anticorrosive coating (500) through the coating device.

2. The high-pressure polyurethane hose special for coal mines as claimed in claim 1, wherein the hardness of the polyurethane particles is 70-72A.

3. The high-pressure polyurethane hose special for coal mines as claimed in claim 1, wherein the temperature for melting the polyurethane particles is 80-100 ℃ and the melting time is 20-30 min.

4. The high-pressure polyurethane hose special for the coal mine as claimed in claim 1, wherein the raw material of the anti-corrosion coating (500) is an epoxy resin composite coating.

5. The high-pressure polyurethane hose special for the coal mines as claimed in claim 1, wherein the woven fiber layer (200) is made of glass fiber.

6. The high-pressure polyurethane hose special for the coal mines as claimed in claim 1, wherein the woven fiber layer (200) and the steel wire layer (300) are led through an adhesive box, so that the woven fiber layer (200) and the steel wire layer (300) are bonded and then led through a die to be pressed on a tractor.

7. The high-pressure polyurethane hose special for coal mines as claimed in claim 1, wherein the steel wire layer (300) is of a spiral surrounding structure.

Technical Field

The invention relates to the technical field of high-pressure polyurethane hoses, in particular to a high-pressure polyurethane hose special for a coal mine.

Background

The polyurethane hose is also called as a PU hose in the market, has the structural characteristics that a firm elastic copper-plated steel wire is coated on the hose wall, the polyurethane hose cannot be changed by climate change, has the performances of stretch resistance, strong tension, high tearing strength, wear resistance, bending resistance, penetration resistance, low temperature resistance, hydrolysis resistance and the like, is widely applied to various industries such as a warmer oil pipe, a civil water pipe, an air pump pipe, an insulating pipe, a ship fuel oil conveying pipe, an air conditioning system, a line system and the like, and has excellent effect, economy and practicality.

The existing polyurethane hose cannot bear external high pressure, and if the polyurethane hose is used in the high-pressure environment of a coal mine for a long time, the service life of the polyurethane hose can be shortened, so that the polyurethane hose is broken, and the hose is possibly corroded by the outside during coal mine operation, so that the service life of the hose is further shortened.

Disclosure of Invention

The invention aims to provide a high-pressure polyurethane hose special for a coal mine, wherein a woven fiber layer and a steel wire layer are arranged in the polyurethane hose, so that the pressure which can be born by the polyester hose can be improved, and meanwhile, an anticorrosive coating which takes epoxy resin composite paint as a raw material is coated on the surface of the appearance of polyurethane through coating equipment, so that the service life of the hose can be effectively prolonged.

The purpose of the invention can be realized by the following technical scheme:

a high-pressure polyurethane hose special for a coal mine comprises a polyurethane inner pipe, wherein a woven fiber layer is bonded on the outer wall of the polyurethane inner pipe, a steel wire layer is implanted into the outer wall of the woven fiber layer, a polyurethane outer pipe is coated on the outer surface of the steel wire layer, and an anti-corrosion coating is coated on the outer surface of the polyurethane outer pipe;

the polyurethane hose is prepared by the following steps:

the method comprises the following steps: selecting colorless and transparent dry polyurethane particles, and starting an extruder to preheat the extruder for 20-30 min;

step two: after preheating is finished, pouring polyurethane particles into an extruder through a hopper, starting a power device of the extruder after the polyurethane particles are melted, and slowly extruding materials;

step three: extruding a polyurethane outer pipe and a polyurethane inner pipe on the outer surface of the steel wire layer and the inner surface of the woven fiber layer respectively through an extruder, leading out a hose through a traction device, conveying the hose to the traction device through a vacuum device and a cooling water tank, and starting the vacuum device to adjust pressure so as to form the hose;

step four: at the moment, the hose is placed on a coating device, and a layer of anticorrosive coating is coated on the outer surface of the hose through the coating device.

As a further scheme of the invention: the hardness of the polyurethane particles is 70-72A.

As a further scheme of the invention: the temperature for melting the polyurethane particles is 80-100 ℃, and the melting time is 20-30 min.

As a further scheme of the invention: the raw material of the anticorrosive coating is epoxy resin composite coating.

As a further scheme of the invention: the woven fiber layer and the steel wire layer are led through the adhesive box to be bonded, and then are led through a die to be pressed on a tractor.

As a further scheme of the invention: the steel wire layer is in a spiral surrounding structure.

As a further scheme of the invention: the coating equipment comprises a fixed frame, wherein a first fixed barrel and a second fixed barrel are fixedly connected to two sides of the top of the fixed frame, rotating barrels are arranged inside the first fixed barrel and the second fixed barrel, a plurality of circulation holes are formed in the outer surface of each rotating barrel and inside the first fixed barrel, coating sponge is fixedly connected to the inside of each rotating barrel and below the circulation holes, a liquid storage cavity is formed between the inner wall of the first fixed barrel and the inner wall of the second rotating barrel, and liquid through pipes penetrate through two sides of the first fixed barrel;

the top of the fixed frame is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a rotating gear ring through a coupler, the outer surface of the rotating cylinder is fixedly connected with a driving gear, and the outer surface of the driving gear is matched with the outer surface of the rotating gear ring;

one side of the second fixed barrel is fixedly connected with a limiting plate, and the limiting plate limits the rotating barrel in a wrapping mode;

the other side of the inner wall of the rotating cylinder is fixedly connected with a limiting cylinder, mounting grooves are formed in two sides of the inner wall of the limiting cylinder, strong magnetic stripes are fixedly connected to the inner surfaces of the two mounting grooves, and a stay tube assembly is arranged between the two strong magnetic stripes and the inner surface of the limiting cylinder;

prop the pipe assembly including supporting the cover, the shape that supports the cover is the cross, the equal sliding connection in four ends that supports the cover has the slide bar, the one end of slide bar is provided with the rotation cover, the internal surface that rotates the cover is provided with the spin, the surface cover of slide bar is equipped with thrust spring, thrust spring's one end and one side fixed connection of cross cover, one side fixedly connected with lug of slide bar, the spacing groove has been seted up to the surface that supports the cover, the internal surface of spacing groove and the surface sliding connection of lug.

As a further scheme of the invention: firstly, a hose is inserted into a rotating cylinder from a first fixing barrel, a sliding rod in a pipe supporting assembly is pushed, a lug on the sliding rod slides on the inner surface of a limiting groove, then the sliding rod is rotated, the lug on the sliding rod slides into one side of the limiting groove, meanwhile, a thrust spring is in a compression state, at the moment, the pipe supporting assembly is placed into the hose and is positioned between two strong magnetic strips, then the sliding rod is rotated again, the sliding rod is pushed under the action of the thrust spring, so that a rolling ball in a rotating sleeve props against the hose, then the hose is connected to external traction equipment, at the moment, a liquid passing pipe is connected with an external pipeline, anticorrosion liquid is injected into the liquid storage cavity through the liquid passing pipe, the anticorrosion liquid is absorbed by sponge through a circulation hole, at the moment, a traction device and a driving motor are started, the traction device drives the hose to move, and the anticorrosive liquid on the coating sponge is smeared on the surface of hose, and driving motor passes through the meshing relation of drive gear and rotation ring gear and makes the rotation section of thick bamboo rotate in the inside of first fixed bucket and second fixed bucket to make the coating sponge drill the hole, further improve the even degree of coating, and under the effect of two powerful magnetic stripes, make the spin rotate at the internal surface of rotating the cover.

The invention has the beneficial effects that:

(1) according to the invention, the polyurethane inner pipe and the polyurethane outer pipe are extruded by using polyurethane particles with the hardness of 70-72A, so that the softness degree of the polyurethane hose can be ensured, the woven fiber layer and the steel wire layer are arranged in the polyurethane hose, so that the pressure which can be borne by the polyester hose can be improved, and meanwhile, the service life of the hose can be effectively prolonged by coating a layer of anticorrosive coating which takes epoxy resin composite coating as a raw material on the surface of the appearance of the polyurethane through coating equipment.

(2) According to the invention, the support pipe assembly is arranged in the coating equipment, the cross-shaped support sleeve and the sliding rod in the support pipe assembly are utilized to be matched with the rotating sleeve and the thrust spring on the sliding rod, so that the rolling ball jacks up the hose, the hose is fully contacted with the inner surface of the coating sponge during coating, the hose is uniformly coated on the outer surface of the hose, and the support pipe assembly is arranged in a suction relation between the two strong magnetic strips and the iron rolling ball, so that the support pipe assembly can be prevented from moving.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a high-pressure polyurethane hose for coal mines according to the present invention;

FIG. 2 is a schematic view of the structure of the exterior of the coating apparatus of the present invention;

FIG. 3 is a schematic view showing an inner structure of a first stationary tub according to the present invention;

FIG. 4 is a partial sectional view of the second stationary barrel of the present invention;

FIG. 5 is a partial sectional view of the spacing cylinder of the present invention;

fig. 6 is an enlarged view of a portion of the structure of fig. 5 a according to the present invention.

In the figure: 100. a polyurethane inner tube; 200. weaving a fiber layer; 300. a steel wire layer; 400. a polyurethane outer tube; 500. an anti-corrosion coating; 1. a fixed mount; 2. a first stationary tub; 3. a second stationary tub; 4. a rotating cylinder; 5. a flow-through hole; 6. coating sponge; 7. a liquid storage cavity; 8. a liquid pipe is communicated; 9. a drive motor; 10. rotating the gear ring; 11. a drive gear; 12. a limiting plate; 13. a limiting cylinder; 14. mounting grooves; 15. a strong magnetic strip; 16. a stay tube assembly; 161. a support sleeve; 162. a slide bar; 163. rotating the sleeve; 164. rolling a ball; 165. a thrust spring; 166. a cross sleeve; 167. a bump; 168. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the high-pressure polyurethane hose special for coal mines according to the present invention includes a polyurethane inner tube 100, and is characterized in that a woven fiber layer 200 is bonded to an outer wall of the polyurethane inner tube 100, a steel wire layer 300 is implanted into an outer wall of the woven fiber layer 200, an outer polyurethane tube 400 is wrapped on an outer surface of the steel wire layer 300, and an anti-corrosion coating 500 is coated on an outer surface of the outer polyurethane tube 400;

the polyurethane hose is prepared by the following steps:

the method comprises the following steps: selecting colorless and transparent dry polyurethane particles, and starting an extruder to preheat the extruder for 30 min;

step two: after preheating is finished, pouring polyurethane particles into an extruder through a hopper, starting a power device of the extruder after the polyurethane particles are melted, and slowly extruding materials;

step three: respectively extruding a polyurethane outer pipe 400 and a polyurethane inner pipe 100 on the outer surface of the steel wire layer 300 and the inner surface of the woven fiber layer 200 through an extruder, leading out a hose through a traction device, conveying the hose to the traction device through a vacuum device and a cooling water tank, and starting the vacuum device to adjust pressure so as to form the hose;

step four: at this time, the hose is placed on a coating device, and a layer of the corrosion prevention coating 500 is coated on the outer surface of the hose by the coating device.

In the present invention, the hardness of the polyurethane particles is 72A.

In the invention, the temperature for melting the polyurethane particles is 100 ℃, and the melting time is 20 min.

In the invention, the raw material of the anticorrosive coating 500 is an epoxy resin composite coating.

In the present invention, the woven fabric layer 200 is made of glass fiber.

In the invention, the woven fiber layer 200 and the steel wire layer 300 are led through an adhesive box, so that the woven fiber layer 200 and the steel wire layer 300 are bonded, and then are led out of a die to be pressed on a tractor.

In the present invention, the steel wire layer 300 has a spiral wound structure.

In the invention, the coating equipment comprises a fixed frame 1, wherein a first fixed barrel 2 and a second fixed barrel 3 are fixedly connected to two sides of the top of the fixed frame 1, rotating bearings are further arranged on two sides of the first fixed barrel 2 to enable a rotating barrel 4 to rotate, the rotating barrels 4 are arranged inside the first fixed barrel 2 and the second fixed barrel 3, a plurality of circulation holes 5 are formed in the outer surface of the rotating barrel 4 and positioned inside the first fixed barrel 2, the circulation holes 5 enable preservative solution in a solution storage cavity 7 to be introduced into the surface of coating sponge 6, a coating sponge 6 is fixedly connected inside the rotating barrel 4 and positioned below the circulation holes 5, the coating sponge 6 can absorb the preservative solution, the preservative solution can be coated on the surface of the hose when the hose passes through the coating sponge 6, a solution storage cavity 7 is formed between the inner wall of the first fixed barrel 2 and the inner wall of the second rotating barrel 4, liquid communicating pipes 8 penetrate through the two sides of the first fixing barrel 2, and a cleaning agent is injected into the liquid communicating pipes 8 to clean the liquid storage cavity 7 and the coating sponge 6;

the top of the fixed frame 1 is fixedly connected with a driving motor 9, the driving motor 9 is electrically connected with an external power supply, the rotating cylinder 4 can rotate through the meshing of the rotating gear ring 10 and the driving gear 11, so that the coating sponge 6 can uniformly coat the anticorrosive liquid on the outer surface of the hose, the output end of the driving motor 9 is fixedly connected with the rotating gear ring 10 through a coupler, the outer surface of the rotating cylinder 4 is fixedly connected with the driving gear 11, and the outer surface of the driving gear 11 is matched with the outer surface of the rotating gear ring 10;

a limiting plate 12 is fixedly connected to one side of the second fixed barrel 3, and the limiting plate 12 limits the rotating barrel 4 in a wrapping manner;

the other side of the inner wall of the rotating cylinder 4 is fixedly connected with a limiting cylinder 13, mounting grooves 14 are formed in two sides of the inner wall of the limiting cylinder 13, strong magnetic stripes 15 are fixedly connected to the inner surfaces of the two mounting grooves 14, a pipe supporting assembly 16 is arranged between the two strong magnetic stripes 15 on the inner surface of the limiting cylinder 13, and the pipe supporting assembly 16 is used for supporting a hose;

the stay tube assembly 16 includes supporting sleeve 161, the shape of supporting sleeve 161 is the cross, the equal sliding connection of four ends of supporting sleeve 161 has slide bar 162, the one end of slide bar 162 is provided with rotates cover 163, the internal surface that rotates cover 163 is provided with spin 164, the surface cover of slide bar 162 is equipped with thrust spring 165, one side fixed connection of one end and cross cover 166 of thrust spring 165, one side fixedly connected with lug 167 of slide bar 162, support sleeve 161's surface and seted up spacing groove 168, the shape of spacing groove 168 is letter "F", the internal surface of spacing groove 168 and the surface sliding connection of lug 167.

The application method of the coating equipment comprises the following steps: firstly, a hose is inserted into the rotating cylinder 4 from the first fixed barrel 2, the sliding rod 162 in the supporting tube assembly 16 is pushed, the convex block 167 on the sliding rod 162 slides on the inner surface of the limiting groove 168, then the sliding rod 162 is rotated, the convex block 167 on the sliding rod 162 slides into one side of the limiting groove 168, the thrust spring 165 is in a compressed state, the supporting tube assembly 16 is placed into the hose and is positioned between the two strong magnetic strips 15, then the sliding rod 162 is rotated again, the sliding rod 162 is pushed under the action of the thrust spring 165, the rolling balls 164 in the rotating sleeve 163 are pressed against the hose, then the hose is connected to an external traction device, the liquid through pipe 8 is connected with an external pipeline, the preservative solution is injected into the liquid storage cavity 7 through the liquid through pipe 8, and the preservative solution is absorbed by the sponge 6 through the flow hole 5, at this moment, the traction device and the driving motor 9 are started, the traction device drives the hose to move, the anticorrosive liquid on the coating sponge 6 is coated on the outer surface of the hose, and the driving motor 9 enables the rotating barrel 4 to rotate inside the first fixed barrel 2 and the second fixed barrel 3 through the meshing relation of the driving gear 11 and the rotating gear ring 10, so that the coating sponge 6 is drilled, the coating uniformity is further improved, and under the action of the two strong magnetic strips 15, the rolling ball 164 rotates on the inner surface of the rotating sleeve 163.

Meanwhile, the content which is not described in detail in the specification belongs to the prior art which is well known to those skilled in the art, on the other hand, each electric part in the device is electrically connected with the control switch, and the working logic and the working sequence among each electric part can be controlled by programming and manpower.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.