阅读说明：本技术 一种复合保温管连续生产工艺 (Continuous production process of composite heat-insulating pipe ) 是由 果风松 杨文波 沈长根 于 2021-07-20 设计创作，主要内容包括：本发明公开了一种复合保温管连续生产工艺,具体包括以下步骤：步骤1：工作管和外护材料同步上料并输送,外护材料位于工作管下方；步骤2：对外护材料进行合拢并填充保温材料,形成上表面预留有开口的管状外护材料；步骤3：对管状外护层和工作管定位、定心,同时对外护材料开口处进行连续焊接形成封闭的外护管；步骤4：保温材料发泡、定型熟化,按既定尺寸截管,制品下线。(The invention discloses a continuous production process of a composite heat-insulating pipe, which specifically comprises the following steps: step 1: synchronously feeding and conveying the working pipe and the outer protection material, wherein the outer protection material is positioned below the working pipe; step 2: folding the outer protection material and filling the heat insulation material to form a tubular outer protection material with an opening reserved on the upper surface; and step 3: positioning and centering the tubular outer protective layer and the working pipe, and simultaneously continuously welding the opening of the outer protective material to form a closed outer protective pipe; and 4, step 4: foaming, shaping and curing the heat-insulating material, cutting the pipe according to the set size, and taking the product off line.)

1. A continuous production process of a composite heat-insulating pipe comprises the following steps: the continuous production process of the composite heat-insulating pipe comprises the following steps of continuously and sequentially entering each process link by adopting a finished product working pipe, simultaneously completing the processing and forming of the outer protective pipe and the pouring of a heat-insulating material on line, and welding the outer protective pipe by utilizing a sheet to be led in and formed, wherein the continuous production process of the composite heat-insulating pipe comprises the following steps:

step 1: synchronously feeding and conveying the working pipe and the outer protection material, wherein the outer protection material is positioned below the working pipe;

step 2: folding the outer protection material and filling the heat insulation material to form a tubular outer protection material with an opening reserved on the upper surface;

and step 3: positioning and centering the tubular outer protective layer and the working pipe, and simultaneously continuously welding the opening of the outer protective material to form a closed outer protective pipe;

and 4, step 4: foaming, shaping and curing the heat-insulating material, cutting the pipe according to the set size, and taking the product off line.

2. The continuous production process of the composite heat-insulating pipe according to claim 1,

the heat insulating material can also be poured into a space between the working pipe and the outer protective material at the front end of the welding position along the welding inner support frame at the position 20-30 cm before the tubular outer protective material is welded into the outer protective pipe, and the tubular outer protective material is welded into the outer protective pipe.

3. The continuous production process of the composite heat-insulating pipe according to claim 1,

and in the process that the outer protection material is folded to form a tubular outer protection material and the tubular outer protection material is welded to form an outer protection pipe to wrap the working pipe, the outer protection material and the working pipe are subjected to temperature pretreatment through a temperature pretreatment mechanism.

4. The continuous production process of the composite heat-insulating pipe according to claim 1,

when the outer protective material and the finished product working pipe are synchronously led in, a bracket can be manually or automatically installed on the finished product working pipe.

5. The continuous production process of the composite heat-insulating pipe according to claim 1,

the introduction molding mechanism includes:

a support frame (301);

the leading-in component (302) is arranged at the top end of the supporting frame (301), the leading-in component (302) comprises a first guide wheel component, a second guide wheel component, a third guide wheel component and a fourth guide wheel component, the second guide wheel component is arranged on one side of the first guide wheel component, the third guide wheel component is arranged on one side, far away from the first guide wheel component, of the second guide wheel component, the fourth guide wheel component is arranged on one side, far away from the second guide wheel component, of the third guide wheel component, the first guide wheel component comprises a first roller (303) and a second roller (304) which are horizontally arranged, the first roller (303) is positioned above the second roller (304), the first roller (303) is contacted with the bottom end of the working pipe, the second roller (304) is contacted with the bottom end of the outer protective material, and the second guide wheel component comprises two third rollers (305) which are symmetrically arranged, the two third rollers (305) are arranged in a V shape, the included angle between the two third rollers (305) is adjustable, the third guide wheel assembly comprises a fourth roller (306) and two fifth rollers (307), the fourth roller (306) is horizontally arranged, the two fifth rollers (307) are vertically arranged, the two fifth rollers (307) are centrosymmetric about the fourth roller (306), the fourth guide wheel assembly comprises three sixth rollers (308), the three sixth rollers (308) are arranged in a triangular shape, and one sixth roller (308) is horizontally arranged;

the forming assembly is arranged at the top end of the supporting frame (301), the forming assembly is positioned on one side of the guide-in assembly (302), the forming assembly comprises a screw rod seat (309), a limit screw rod (310), supporting wheel sets (311) and a limit guide wheel (312), the screw rod seat (309) is perpendicular to the working pipe, the working pipe penetrates through the center of the screw rod seat (309), a plurality of groups of limit screw rods (310) are arranged along the axial direction of the working pipe (103), each group of limit screw rods (310) are uniformly arranged along the circumferential direction of the working pipe (103), one end, far away from the working pipe (103), of each limit screw rod (310) is in threaded connection with the screw rod seat (309), the lower end of each supporting wheel set (311) is fixedly connected with the upper surface of the supporting frame (301), and the supporting wheel sets (311) are arranged on the upper surface of the supporting frame (301) at equal intervals, the upper end of the supporting wheel set (311) is provided with a roller, the outer wall of the roller is in contact with the outer protection material, the arc of the outer wall of the roller is matched with the section arc section of the working pipe (103), the limit guide wheels (312) are arranged above the supporting wheel set (311), the limit guide wheels (312) are arranged into two, and the two limit guide wheels (312) are in contact with the two side walls of the outer protection material body respectively.

6. The continuous production process of the composite heat-insulating pipe according to claim 3,

the temperature pretreatment mechanism comprises:

the first heating assembly is arranged at the position of the leading-in assembly (302), the first heating assembly comprises a plurality of first heating devices (501), the first heating devices (501) are arranged at the outer side of a working pipe on the leading-in assembly (302) at intervals, and the first heating devices (501) heat the working pipe and an outer protection material in any one of a surrounding heating mode or a unidirectional heating mode;

the second heating assembly is arranged at the forming assembly and comprises a high-temperature shield (502), the high-temperature shield (502) is covered on the outer side of the forming assembly, and the high-temperature shield (502) is connected with a second heating device.

7. The continuous production process of the composite heat-insulating pipe according to claim 5,

an automatic deviation rectifying device (12) is further arranged on the supporting frame (302), and the automatic deviation rectifying device (12) is arranged on one side, far away from the second guide wheel assembly, of the first guide wheel assembly;

the shell (13) is arranged on the support frame (302), the shell (13) is positioned on one side, far away from the second guide wheel assembly, of the first guide wheel assembly, the lifting cavity (14) is arranged in the shell (13), and a deviation rectifying cavity (15) is arranged above the lifting cavity (14);

the motor (16), the said motor (16) locates the bottom end of inner wall of the said lifting cavity (14);

one end of the first rotating rod (17) is connected with the motor (16), and the other end of the first rotating rod (17) is connected with the rotating block (18);

the lifting device comprises a lifting rod (20), wherein one end of the lifting rod (20) is provided with an inclined cavity (19), a rotating block (18) is positioned in the inclined cavity (19), the other end of the lifting rod (20) is provided with a sliding rod (21), and the other end of the sliding rod (21) is in contact connection with the inner wall of the lifting cavity (14);

the lifting cavity (14) is internally provided with two triangular blocks (22), and two adjacent triangular blocks (22) are symmetrically arranged;

the two sides of the deviation rectifying block (23) are rotatably connected with the inner wall of the deviation rectifying cavity (15) through rotating shafts (25), and a deviation rectifying groove (29) is formed in the top end of the deviation rectifying block (23);

the two ends of the second rotating rod (26) are rotatably connected with the inner wall of the deviation rectifying groove (29), and a plurality of second rotating rods (26) are arranged in the deviation rectifying groove (29);

the deviation rectifying wheel (27), the deviation rectifying wheel (27) is sleeved on the second rotating rod (26);

the lifting block (30) is arranged at the top end of the lifting rod (20), and the lifting block (30) is arranged close to the sliding rod (21);

the infrared sensors (28) are arranged on the two third rollers (305), and the two adjacent infrared sensors (28) are located on the same horizontal plane.

8. The continuous production process of the composite heat-insulating pipe according to claim 3,

still be equipped with overspeed device tensioner (31) on casing (13), overspeed device tensioner is located automatic deviation correcting device (12) keep away from first guide pulley subassembly one side, overspeed device tensioner (31) includes:

the adjusting groove (33), the adjusting groove (33) is arranged at the top end of the shell (13), and the adjusting groove (33) is positioned on one side, away from the first guide wheel assembly, of the automatic deviation correcting device (12);

one end of the adjusting rod (35) is connected in the adjusting groove (33) in a sliding mode, and the other end of the adjusting rod (35) is connected with a seventh roller (37) in a rotating mode through a rotating shaft;

the thread groove (36), the said thread groove (36) locates the bottom of the said regulating lever (35);

the servo motor (32) is arranged in the shell (13), and the servo motor (32) is positioned below the adjusting groove (33);

one end of the threaded rod (34) is connected with the servo motor (32), and the other end of the threaded rod (34) extends into the adjusting groove (33) and is in threaded connection with the threaded groove (36);

the pressure sensor (38), the pressure sensor (38) is sleeved in the middle of the seventh roller (37);

the fixing rods (39) are arranged on two sides of the adjusting rod (35), and the fixing rods (39) are arranged at the top end of the shell (13);

the eighth roller (40) is rotatably arranged in the middle of the fixed rod (39) through a rotating shaft;

and the ninth roller (41) is rotatably arranged on the fixing rod (39) through a rotating shaft, and the ninth roller (41) is positioned above the eighth roller (40).

Technical Field

The invention relates to the technical field of composite heat-insulating pipe production, in particular to a continuous production process of a composite heat-insulating pipe.

Background

The heat preservation pipe is a short name of a heat insulation pipeline, is used for conveying liquid, gas and other media, and is used for heat preservation of heat insulation engineering of pipelines of petroleum, chemical engineering, aerospace, hot spring-military, central heating, central air conditioning, municipal administration and the like.

The heat preservation pipe is divided into three layers from inside to outside: a first layer: the working steel pipe layer is generally selected from seamless steel pipes, spiral steel pipes and straight seam steel pipes according to the design and the requirements of customers. After the surface of the steel pipe is treated by an advanced shot blasting rust removal process, the rust removal grade of the steel pipe can reach Sa2 grade in GB8923-1988 standard, and the surface roughness can reach 12.5 microns in GB6060.5-88 standard; a second layer: the polyurethane heat-insulating layer is formed by injecting rigid polyurethane foam stock solution into a cavity formed between the steel pipe and the outer protective layer at one time by using a high-pressure foaming machine, namely the polyurethane heat-insulating layer is commonly called pipe-in-pipe foaming; and a third layer: the high-density polyethylene protective layer is prefabricated into a black or yellow polyethylene plastic pipe with a certain wall thickness. The polyurethane heat-insulating layer has the functions of protecting the polyurethane heat-insulating layer from being damaged by mechanical hard objects, and preventing corrosion and water.

The heat preservation pipe is an important factor influencing energy conservation, and the development and the application of the heat preservation pipe are more and more generally paid attention by countries in the world. After the 70 s in the 20 th century, the production and application of thermal insulation pipes are generally regarded as important abroad, and the energy consumption is greatly reduced, so that the environmental pollution and the greenhouse effect are reduced. The foreign insulation industry has a long history, and new insulation materials are emerging continuously. Before 1980, the development of heat preservation pipes in China is very slow, and few heat preservation plants can only produce a small amount of underground directly-buried heat preservation pipes, but after more than 30 years of efforts in the heat preservation industry in China, particularly after the high-speed development of nearly 10 years, a large number of products are developed from endless to diversified, the quality is improved from low to high, and the application is more and more common. Polyurethane materials are currently the most commonly used insulation materials internationally. The rigid polyurethane has many excellent properties and is widely used in the fields of heat preservation and heat insulation in European and American countries. About 49% of heat insulation materials in developed countries such as Europe and America are polyurethane materials, and the proportion in China is still less than 20%.

At present, at the in-process of production insulating tube, generally be with the work pipe through the support with outer protection tube combination back together, pour into the foamer again and make the heat preservation in the space between work pipe and the outer protection tube, pour into and take off from the support after finishing, install the support with new work pipe and outer protection tube again, then just can pour into the work, and the support size is fixed, be not convenient for produce not unidimensional insulating tube, make the production process of insulating tube complicated, waste time and energy, can't carry out the continuous production of insulating tube, production efficiency is lower. Therefore, there is a need for a continuous production process for composite thermal insulation pipes, which at least partially solves the problems of the prior art.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In order to at least partially solve the above problems, the present invention provides a continuous production process of a composite insulating pipe, the insulating pipe comprising: the continuous production process of the composite heat-insulating pipe comprises the following steps of continuously and sequentially entering each process link by adopting a finished product working pipe, simultaneously completing the processing and forming of the outer protective pipe and the pouring of a heat-insulating material on line, and welding the outer protective pipe by utilizing the leading-in forming of a sheet material, wherein the continuous production process of the composite heat-insulating pipe specifically comprises the following steps:

step 1: synchronously feeding and conveying the working pipe and the outer protection material, wherein the outer protection material is positioned below the working pipe;

step 2: folding the outer protection material and filling the heat insulation material to form a tubular outer protection material with an opening reserved on the upper surface;

and step 3: positioning and centering the tubular outer protective layer and the working pipe, and simultaneously continuously welding the opening of the outer protective material to form a closed outer protective pipe;

and 4, step 4: foaming, shaping and curing the heat-insulating material, cutting the pipe according to the set size, and taking the product off line.

Preferably, the thermal insulation material can be poured by overhanging a pouring gun and a material conveying pipeline into a space between the working pipe at the front end of the welding position and the outer protection material along the welding inner support frame at a position 20-30 cm before the tubular outer protection material is welded into the outer protection pipe, and pouring after the tubular outer protection material is welded into the outer protection pipe.

Preferably, the outer protection material is folded to form the tubular outer protection material, and the outer protection material and the working pipe are subjected to temperature pretreatment through a temperature pretreatment mechanism in the process of welding the outer protection material and the tubular outer protection material to form the outer protection pipe to wrap the working pipe.

Preferably, when the outer protective material and the finished product working pipe are synchronously introduced, a bracket can be manually or automatically installed on the finished product working pipe.

Preferably, the introduction molding mechanism includes:

a support frame;

the leading-in assembly is arranged at the top end of the supporting frame and comprises a first guide wheel assembly, a second guide wheel assembly, a third guide wheel assembly and a fourth guide wheel assembly, the second guide wheel assembly is arranged on one side of the first guide wheel assembly, the third guide wheel assembly is arranged on one side, far away from the first guide wheel assembly, of the second guide wheel assembly, the fourth guide wheel assembly is arranged on one side, far away from the second guide wheel assembly, of the third guide wheel assembly, the first guide wheel assembly comprises a first roller and a second roller which are horizontally arranged, the first roller is positioned above the second roller, the first roller is in contact with the bottom end of the working tube, the second roller is in contact with the bottom end of the outer protective material, the second guide wheel assembly comprises two third rollers which are symmetrically arranged, the two third rollers are arranged in a V shape, and the included angle between the two third rollers is adjustable, the third guide wheel assembly comprises a fourth roller and two fifth rollers, the fourth roller is horizontally arranged, the two fifth rollers are vertically arranged, the two fifth rollers are symmetrical about the center of the fourth roller, the fourth guide wheel assembly comprises three sixth rollers, the three sixth rollers are arranged in a triangular shape, and one of the sixth rollers is horizontally arranged;

the forming assembly is arranged at the top end of the support frame and is positioned at one side of the guide-in assembly, the forming assembly comprises a screw seat, limit screws, support wheel sets and a limit guide wheel, the screw seat is perpendicular to the working pipe, the working pipe passes through the center of the screw seat, the limit screws are provided with a plurality of groups along the axial direction of the working pipe, each group of the limit screws are uniformly arranged along the circumferential direction of the working pipe, one end of the limit screws, far away from the working pipe, is in threaded connection with the screw seat, the lower ends of the support wheel sets are fixedly connected with the upper surface of the support frame, the support wheel sets are arranged on the upper surface of the support frame at equal intervals, rollers are arranged at the upper ends of the support wheel sets, the outer walls of the rollers are in contact with the outer protective material, and the arcs of the outer walls of the rollers are matched with the arcs of the sections of the working pipe, the two limit guide wheels are respectively contacted with the two side walls of the outer protective material body.

Preferably, the temperature pretreatment mechanism comprises:

the first heating assembly is arranged at the guiding assembly and comprises a plurality of first heating devices, the first heating devices are arranged at the outer side of a working pipe on the guiding assembly at intervals, and the first heating devices heat the working pipe and an outer protection material in any one of a surrounding heating mode or a unidirectional heating mode;

the second heating assembly is arranged at the forming assembly and comprises a high-temperature shield, the high-temperature shield is covered on the outer side of the forming assembly, and the high-temperature shield is connected with a second heating device.

Preferably, the supporting frame is further provided with an automatic deviation rectifying device, and the automatic deviation rectifying device is arranged on one side, far away from the second guide wheel assembly, of the first guide wheel assembly;

the shell is arranged on the support frame, the shell is positioned on one side, away from the second guide wheel assembly, of the first guide wheel assembly, the lifting cavity is arranged in the shell, and a deviation rectifying cavity is arranged above the lifting cavity;

the motor is arranged at the bottom end of the inner wall of the lifting cavity;

one end of the first rotating rod is connected with the motor, and the other end of the first rotating rod is connected with the rotating block;

one end of the lifting rod is provided with an inclined cavity, the rotating block is positioned in the inclined cavity, the other end of the lifting rod is provided with a sliding rod, and the other end of the sliding rod is in contact connection with the inner wall of the lifting cavity;

the lifting cavity is internally provided with two triangular blocks, and two adjacent triangular blocks are symmetrically arranged;

the two sides of the deviation rectifying block are rotatably connected with the inner wall of the deviation rectifying cavity through rotating shafts, and a deviation rectifying groove is formed in the top end of the deviation rectifying block;

the two ends of the second rotating rod are rotatably connected with the inner wall of the deviation rectifying groove, and a plurality of second rotating rods are arranged in the deviation rectifying groove;

the deviation rectifying wheel is sleeved on the second rotating rod;

the lifting block is arranged at the top end of the lifting rod and is close to the sliding rod;

and the infrared sensors are arranged on the two third rollers, and the adjacent infrared sensors are positioned on the same horizontal plane.

Preferably, the housing is further provided with a tensioning device, the tensioning device is located on one side of the automatic deviation correcting device, which is far away from the first guide wheel assembly, and the tensioning device includes:

the adjusting groove is arranged at the top end of the shell and is positioned on one side, away from the first guide wheel assembly, of the automatic deviation correcting device;

one end of the adjusting rod is connected in the adjusting groove in a sliding mode, and the other end of the adjusting rod is rotatably connected with a seventh roller through a rotating shaft;

the thread groove is formed in the bottom end of the adjusting rod;

the servo motor is arranged in the shell and is positioned below the adjusting groove;

one end of the threaded rod is connected with the servo motor, and the other end of the threaded rod extends into the adjusting groove and is in threaded connection with the threaded groove;

the pressure sensor is sleeved in the middle of the seventh roller;

the fixed rods are arranged on two sides of the adjusting rod and are arranged at the top end of the shell;

the eighth roller is rotatably arranged in the middle of the fixed rod through a rotating shaft;

and the ninth roller is rotatably arranged on the fixed rod through a rotating shaft and is positioned above the eighth roller.

Compared with the prior art, the invention at least comprises the following beneficial effects:

the outer protective pipe of the composite heat-insulating pipe continuous production process is directly processed by a sheet material when the heat-insulating pipe is manufactured, a support can be installed on a working pipe according to needs in the process, the heat-insulating material is poured when the working pipe and the outer protective pipe synchronously pass through a pouring station, the pouring operation of the heat-insulating material can be performed by pouring the heat-insulating material in an open manner before the outer protective pipe is welded, or the heat-insulating material can be poured after the outer protective pipe is welded, the whole process flow is completed by auxiliary stations such as pretreatment, synchronous curing and shaping, fixed-length pipe cutting, finished product offline and the like, the continuous production of the composite heat-insulating pipe is realized, the production efficiency is greatly improved, the production cost is reduced, and when the outer protective pipe is manufactured, the pipe can be guided into a forming mechanism to control the pipe diameter of the outer protective pipe, so that the heat-insulating pipes with different pipe diameters can be manufactured.

The present invention is directed to a continuous process for producing a composite insulated pipe, and other advantages, objects, and features of the present invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a process flow diagram of a continuous production process of a composite insulating pipe according to the present invention;

FIG. 2 is a schematic structural diagram of a lead-in assembly of the continuous production process of the composite heat-insulating pipe of the present invention;

FIG. 3 is a front view and a side view of a forming assembly of a continuous process for producing composite insulating pipes in accordance with the present invention;

FIG. 4 is a schematic structural diagram of a temperature pretreatment mechanism of the continuous production process of the composite heat-insulating pipe of the present invention;

FIG. 5 is a schematic structural diagram of a deviation rectifying device for the continuous production process of the composite thermal insulation pipe of the present invention;

FIG. 6 is a schematic top view of a deviation correcting device for the continuous production process of composite thermal insulation pipes according to the present invention;

FIG. 7 is a schematic structural diagram of a tensioning device of the continuous production process of the composite heat-insulating pipe.

Description of reference numerals: 301. a support frame; 302. importing a component; 303. a first drum; 304. a second drum; 305. a third drum; 306. a fourth drum; 307. a fifth drum; 308. a sixth drum; 309. a screw seat; 310. a limit screw; 311. a support wheel set; 312. a limit guide wheel; 501. a first heating device; 502. a high temperature shield; 12. an automatic deviation rectifying device; 13. a housing; 14. a lifting chamber; 15. a deviation rectifying cavity; 16. a motor; 17. a first rotating lever; 18. rotating the block; 19. an inclined cavity; 20. a lifting bar; 21. a slide bar; 22. a triangular block; 23. a deviation rectifying block; 25. a rotating shaft; 26. a second rotating lever; 27. a deviation rectifying wheel; 28. an infrared sensor; 29. a deviation rectifying groove; 30. a lifting block; 31. a tensioning device; 32. a servo motor; 33. an adjustment groove; 34. a threaded rod; 35. adjusting a rod; 36. a thread groove; 37. a seventh drum; 38. a pressure sensor; 39. fixing the rod; 40. an eighth drum; 41. and a ninth drum.

Detailed Description

The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 to 7, the present invention provides a continuous production process of a composite insulating pipe, the insulating pipe comprising: the continuous production process of the composite heat-insulating pipe comprises the following steps of continuously and sequentially entering each process link by adopting a finished product working pipe, simultaneously completing the processing and forming of the outer protective pipe and the pouring of a heat-insulating material on line, and welding the outer protective pipe by utilizing the leading-in forming of a sheet material, wherein the continuous production process of the composite heat-insulating pipe specifically comprises the following steps:

step 1: synchronously feeding and conveying the working pipe and the outer protection material, wherein the outer protection material is positioned below the working pipe;

step 2: folding the outer protection material and filling the heat insulation material to form a tubular outer protection material with an opening reserved on the upper surface;

and step 3: positioning and centering the tubular outer protective layer and the working pipe, and simultaneously continuously welding the opening of the outer protective material to form a closed outer protective pipe;

and 4, step 4: foaming, shaping and curing the heat-insulating material, cutting the pipe according to the set size, and taking the product off line.

The working principle of the technical scheme is as follows: in the actual use process, the working pipe and the outer protection material are synchronously fed and conveyed, the outer protection material and the working pipe synchronously enter a feeding station, a forming station and a welding station in a sheet form, the welding station is coated outside the working pipe to form the outer protection pipe, a bracket can be arranged on the working pipe according to needs at the feeding station, the pouring of the heat insulation material is completed when the working pipe and the outer protection pipe synchronously pass through the pouring station, the pouring operation of the heat insulation material can be performed by probing into the outer protection pipe after the outer protection pipe is welded or by opening before the outer protection pipe is welded, and auxiliary stations such as pretreatment, synchronous curing and shaping, sizing pipe cutting, finished product offline and the like of other materials assist in completing the whole process flow.

The beneficial effects of the above technical scheme are that: by the design of the structure, the outer protective pipe of the heat preservation pipe is directly processed by sheets when the heat preservation pipe is manufactured, in the process, the heat insulation material can be continuously filled between the working pipe and the outer protective pipe material, unlike the traditional process that a bracket is manually installed and fixed on the working pipe, then the outer protecting pipe and the working pipe are sleeved together and then are filled with heat insulation materials, a brand new production process is provided, the continuous production of the composite heat insulation pipe is realized, the production efficiency is greatly improved, the production cost is reduced, and when the outer protecting pipe is manufactured, the leading-in forming mechanism can be adjusted to control the pipe diameter of the outer protecting pipe, thereby make the insulating tube of different pipe diameters, and outer pillar material is by the sheet transportation, very big storage space and the cost of transportation of having saved, avoided adopting outer pillar transportation can appear extrudeing, fish tail, deformation scheduling problem.

In one embodiment, the thermal insulation material can be poured by overhanging a pouring gun and a material conveying pipeline into a space between the working pipe and the outer protection material at the front end of the welding position along the welding inner support frame before the tubular outer protection material is welded into the outer protection pipe and at a position 20-30 cm before the welding position, and pouring after the tubular outer protection material is welded into the outer protection pipe.

The working principle and the beneficial effects of the technical scheme are as follows: through the design of above-mentioned structure, realized the filling preparation function of heat preservation through above-mentioned filling mode, this kind of filling mode still can be quantitative to carrying the particulate matter filler in the airtight space of heat preservation, and above-mentioned filling mode can be with the form of sprinkling irrigation to the heat preservation space simultaneously, and the operation consequently spatters and also can not pollute the external world in closed space, can realize the utilization of particulate matter filler through its splash function.

In one embodiment, during the process that the outer protection material is folded to form the tubular outer protection material and the tubular outer protection material is welded to form the outer protection pipe to wrap the working pipe, the outer protection material and the working pipe are subjected to temperature pretreatment through a temperature pretreatment mechanism.

The working principle of the technical scheme is as follows: in the actual use process, the process is provided with a link for pretreating the temperature of the working pipe and the outer protection material in the synchronous leading-in, forming and welding processes of the outer protection material, and the link can carry out temperature pretreatment on the production material in real time in the production process.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, through carrying out temperature pretreatment to work pipe and outer protective material for work pipe and outer protective material reach suitable temperature, and suitable temperature more is favorable to improving insulation material's foaming quality and utilization ratio, makes this technology link not influenced under low temperature environment.

In one embodiment, when the outer protective material and the working pipe are synchronously introduced, a bracket can be manually or automatically installed on the finished working pipe.

The working principle of the technical scheme is as follows: in the actual use process, in the working pipe guiding process, the working personnel can install the support on the working pipe or can not install the support on the working pipe.

The beneficial effects of the above technical scheme are that: through the design of the structure, the process can fill the heat-insulating material after the working pipe is provided with the support, and can also fill the heat-insulating material under the condition that the support is not arranged on the working pipe.

In one embodiment, the lead-in shaping mechanism comprises:

a support frame 301;

the leading-in component 302 is arranged at the top end of the supporting frame 301, the leading-in component 302 comprises a first guide wheel component, a second guide wheel component, a third guide wheel component and a fourth guide wheel component, the second guide wheel component is arranged at one side of the first guide wheel component, the third guide wheel component is arranged at one side of the second guide wheel component far away from the first guide wheel component, the fourth guide wheel component is arranged at one side of the third guide wheel component far away from the second guide wheel component, the first guide wheel component comprises a first roller 303 and a second roller 304 which are horizontally arranged, the first roller 303 is arranged above the second roller 304, the first roller 303 is contacted with the bottom end of the working pipe, the second roller 304 is contacted with the bottom end of the outer protective material, the second guide wheel component comprises two third rollers 305 which are symmetrically arranged, and the two third rollers 305 are arranged in a V shape, the included angle between the two third rollers 305 is adjustable, the third guide wheel assembly comprises a fourth roller 306 and two fifth rollers 307, the fourth roller 306 is horizontally arranged, the two fifth rollers 307 are vertically arranged, the two fifth rollers 307 are centrosymmetric with respect to the fourth roller 306, the fourth guide wheel assembly comprises three sixth rollers 308, the three sixth rollers 308 are arranged in a triangular shape, and one sixth roller 308 is horizontally arranged;

the forming component is arranged at the top end of the supporting frame 301, the forming component is positioned at one side of the guiding component 302, the forming component comprises a screw seat 309, a limit screw 310, a supporting wheel set 311 and a side limit guide wheel 312, the screw seat 309 is perpendicular to the working pipe, the working pipe passes through the center of the screw seat 309, the limit screw 310 is provided with a plurality of groups along the axial direction of the working pipe 103, each group of limit screws 310 is uniformly arranged along the circumferential direction of the working pipe 103, one end of the limit screw 310, far away from the working pipe 103, is in threaded connection with the screw seat 309, the lower end of the supporting wheel set 311 is fixedly connected with the upper surface of the supporting frame 301, the supporting wheel sets 311 are arranged on the upper surface of the supporting frame 301 at equal intervals, the upper end of the supporting wheel set 311 is provided with a roller, and the outer wall of the roller is in contact with the outer protective material, the outer wall arc of the roller is matched with the section arc section of the working pipe 103, the two edge limiting guide wheels 312 are arranged above the supporting wheel set 311, and the two edge limiting guide wheels 312 are respectively contacted with the two side walls of the outer protective material body.

The working principle of the technical scheme is as follows: the leading-in forming mechanism 3 is used for leading in and bending the outer protection material body gradually, and finally forming a tubular structure to cover the outside of the working pipe, the cross section of the formed outer protection material body is in an unclosed round shape, two side plate edges of the outer protection material body are intersected at the unclosed round position, and the outer protection pipe is formed after welding, the outer protection material body enters at the input end of the leading-in forming mechanism in a continuous flat plate form and then is welded in a continuous unclosed tubular leading-in manner, wherein a leading-in assembly 302 is arranged on the second support frame 301, the leading-in assembly 302 is composed of a plurality of groups of guide wheel sets with different spatial positions, the leading-in assembly 302 is used for conducting primary shaping after leading in the outer protection material body gradually, and the outer protection material with a straight cross section passes through the first guide wheel assembly, the second guide wheel assembly, the third guide wheel assembly and the fourth guide wheel assembly in sequence, and passes through the first guide wheel assembly, The rollers in the second guide wheel assembly, the third guide wheel assembly and the fourth guide wheel assembly are forcibly limited, the material is forced to be twisted and led out to the forming assembly in a C-shaped cross section after being deformed in space, wherein the first guide wheel assembly is horizontally provided with a first roller 303 and a second roller 304, the first roller 303 is used for supporting and transmitting a working pipe, the second roller 304 is used for supporting and transmitting an outer protective material body, the working pipe and the outer protective material enter the second guide wheel assembly after passing through the first guide wheel assembly, the third roller 305 of the second guide wheel assembly is arranged in a V shape, an included angle between the two third rollers 305 is adjustable, the working pipe can be supported and transmitted by the two third rollers 305, the two sides of the outer protective material can be limited and bent by the third rollers 305 when passing through the third rollers 305, when the outer protective material enters the third guide wheel assembly, the two sides of the outer protective material are further limited by the two fifth rollers 307, two sides of the outer protection material are further bent and then conveyed to a fourth guide wheel assembly by a fourth roller 306, three sixth rollers 308 at the fourth guide wheel assembly are arranged in a triangular shape, the upper ends of the two sides of the outer protection material can be continuously bent, the section of the outer protection material is changed into a C shape, then the outer protection material enters a forming assembly, the outer protection material subjected to primary shaping is finely shaped and sized in the forming assembly, the cross section of the formed outer protection material body 105 is changed from the C shape into an unclosed circular shape, the two side plate edges are intersected at the circular unclosed position, a welding forming mechanism 6 is closed into an outer protection pipe after being welded, the outer diameter of the outer protection pipe is set to be a size for production, the forming assembly is arranged on the upper surface of the second support frame 301 and is positioned on the right side of the guide assembly 302, the forming assembly comprises a screw rod seat 309, a limit screw rod 310, a support wheel set 311 and an edge limit guide wheel 312, the limit screws 310 are provided with a plurality of groups along the axial direction of the working pipe 103, each group of limit screws 310 is uniformly arranged around the center of the working pipe 103 by 360 degrees, the limit screws 310 are arranged in the screw seat 309 and are in threaded connection with the screw seat 309, so that the limit screws 310 can be screwed in and out in the screw seat 309, a gradually changed space envelope point can be formed by adjusting the space position of the end of each limit screw 310, the guided C-shaped outer protection material can be forcibly adjusted into a circular shape to be guided out by means of the combined action of the support wheel group 311 and the edge limit guide wheel 312, the support wheel group 311 can not only bear most of the gravity of the working pipe and the outer protection material, but also has the functions of shaping and positioning, thereby ensuring the smooth guiding and guiding out of the production material, the edge limit guide wheel 312 plays the role of assisting the sizing, and simultaneously can ensure the position of an unclosed opening when the outer protection material with a circular section is guided out, the welding of the epilogue of being convenient for, the quantity of leading-in subassembly 302, stop screw 310 and supporting wheel group 311 can increase and decrease the use according to the product specification, and small-size product quantity is less, and jumbo size product quantity is more, and the work pipe is synchronous through leading-in forming mechanism 3 with outer protective material, and when exporting at last, outer protective material can cladding outside the work pipe and form outer protective pipe.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, leading-in subassembly 302 through the design is processed outer protective material into the ring that has the clearance, then outer protective material gets into the shaping subassembly, and outer protective material of preliminary plastic carries out meticulous plastic and scale in the shaping subassembly, can accomplish outer protective pipe that becomes required pipe diameter with outer protective material according to own needs processing.

In one embodiment, the temperature preconditioning mechanism comprises:

the first heating assembly is arranged at the guiding assembly 302 and comprises a plurality of first heating devices 501, the first heating devices 501 are arranged at intervals outside the working pipe on the guiding assembly 302, and the first heating devices 501 heat the working pipe and the outer protection material in any one of a surrounding heating mode or a unidirectional heating mode;

the second heating assembly is arranged at the forming assembly and comprises a high-temperature shield 502, the high-temperature shield 502 is covered outside the forming assembly, and the high-temperature shield 502 is connected with a second heating device.

The working principle of the technical scheme is as follows: the temperature preprocessing mechanism 5 can preprocess the temperature of the working pipe and the outer protective material, can heat up by adopting any one of a multi-point strong heating mode or a high-temperature shield 502 mode or a combined heating mode, generally adopts a high-temperature air supply heat source, a first heating assembly is arranged at the leading-in assembly 302 and comprises a plurality of first heating devices 501, the plurality of first heating devices 501 are distributed at the outer side of the working pipe of the leading-in assembly 302 at intervals, the first heating devices 501 can be arranged at the heating position to heat around the working pipe or exhaust air in a single direction to heat the working pipe, the position of the first heating devices 501 can be arranged according to the requirement of a user, the angle of hot air conveyed by the first heating devices 501 can be adjusted, the heat utilization rate is improved, a second heating assembly is arranged at the forming assembly and comprises the high-temperature shield 502, and the high-temperature shield 502 is arranged at the outer side of the forming assembly, then, a second heating device is arranged outside the high-temperature shield 502, and hot air generated by the second heating device can be conveyed into the high-temperature shield 502, so that the space inside the high-temperature shield 502 is continuously maintained within a set high-temperature range.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, adopt temperature pretreatment mechanism to carry out the preliminary treatment to the temperature of working pipe and outer protective material, through strong hot high-efficient heating, realized the rapid heating up of working pipe and outer protective material, be favorable to the leading-in of outer protective material to take shape, improve insulation material's foaming quality and utilization ratio when being favorable to again, temperature pretreatment is the intensification demand, the high-speed business turn over of having avoided the production material leads to the intensification time of production material to be shorter, conventional thermostatic chamber can't reach the purpose of production material rapid heating up in the short time.

In one embodiment, an automatic deviation correcting device 12 is further disposed on the supporting frame 302, and the automatic deviation correcting device 12 is disposed on a side of the first guide wheel assembly away from the second guide wheel assembly;

the shell 13 is arranged on the supporting frame 302, the shell 13 is positioned on one side of the first guide wheel assembly, which is far away from the second guide wheel assembly, the lifting cavity 14 is arranged in the shell 13, and the deviation rectifying cavity 15 is arranged above the lifting cavity 14;

the motor 16 is arranged at the bottom end of the inner wall of the lifting cavity 14;

one end of the first rotating rod 17 is connected with the motor 16, and the other end of the first rotating rod 17 is connected with the rotating block 18;

the lifting rod 20, one end of the lifting rod 20 is provided with an inclined cavity 19, the rotating block 18 is positioned in the inclined cavity 19, the other end of the lifting rod 20 is provided with a sliding rod 21, and the other end of the sliding rod 21 is in contact connection with the inner wall of the lifting cavity 14;

the lifting cavity 14 is internally provided with two triangular blocks 22, and the two adjacent triangular blocks 22 are symmetrically arranged;

the two sides of the deviation rectifying block 23 are rotatably connected with the inner wall of the deviation rectifying cavity 15 through a rotating shaft 25, and a deviation rectifying groove 29 is formed in the top end of the deviation rectifying block 23;

the two ends of the second rotating rod 26 are rotatably connected with the inner wall of the deviation rectifying groove 29, and a plurality of second rotating rods 26 are arranged in the deviation rectifying groove 29;

the deviation rectifying wheel 27 is sleeved on the second rotating rod 26;

the lifting block 30 is arranged at the top end of the lifting rod 20, and the lifting block 30 is arranged close to the sliding rod 21;

the infrared sensors 28 are arranged on two third rollers 305, and two adjacent infrared sensors 28 are located on the same horizontal plane.

The working principle of the technical scheme is as follows: in the actual use process, in the initial state, the outer protective material passes through the deviation rectifying wheel 27 and enters the first guide wheel assembly, when the outer protective material passes through the third guide wheel assembly, if the outer protective material deviates, that is, when one of the two infrared sensors 28 arranged on the adjacent two fifth rollers 307 can detect the outer protective material, when the infrared sensor 28 on the left side detects the outer protective material, the motor 16 is started, the motor 16 drives the lifting rod 20 to rotate to the left through the first rotating rod 17, the sliding rod 21 is driven to rotate when the lifting rod 20 rotates, the sliding rod 21 drives one end of the fixed rod 20 to move upwards under the action of the triangular block 22, and the motor stops rotating when the top end of the triangular block 22, the fixed rod 20 drives the lifting block 30 to move upwards, the lifting block 30 drives the left side of the deviation rectifying block 23 to move upwards, the left side of the deviation rectifying block 23 moves upwards to drive the left side of the deviation rectifying wheel 27 to be higher than the right side, the outer protective material moves rightwards under the action of the deviation rectifying wheel 27 until the two infrared sensors 28 cannot sense the outer protective material, the motor 16 rotates reversely, so that the deviation rectifying block 23 is restored to be horizontal, and the deviation rectification is completed; when the infrared sensor 28 on the right side senses the outer protective material, the motor 16 drives the fixing rod to rotate right, and the correction of the outer protective material is completed.

The beneficial effects of the above technical scheme are that: through the design of the structure and the designed automatic deviation rectifying device 12, the deviation rectification can be automatically completed if the outer protection material deviates when being led into the assembly 31, so that the situation that the outer protection pipe cannot form a circular ring due to the deviation of the outer protection material and the subsequent processing is influenced is avoided; meanwhile, the phenomenon that the filling of the heat insulation material is influenced due to the fact that the heights of two ends of the U-shaped cross section formed by the outer protection material are different is avoided.

In one embodiment, a tensioning device 31 is further disposed on the housing 13, the tensioning device is located on a side of the automatic deviation correcting device 12 away from the first guide wheel assembly, and the tensioning device 31 includes:

the adjusting groove 33 is arranged at the top end of the shell 13, and the adjusting groove 33 is positioned on one side of the automatic deviation correcting device 12 away from the first guide wheel assembly;

one end of the adjusting rod 35 is slidably connected in the adjusting groove 33, and the other end of the adjusting rod 35 is rotatably connected with a seventh roller 37 through a rotating shaft;

the thread groove 36 is formed in the bottom end of the adjusting rod 35;

the servo motor 32 is arranged in the shell 13, and the servo motor 32 is positioned below the adjusting groove 33;

one end of the threaded rod 34 is connected with the servo motor 32, and the other end of the threaded rod 34 extends into the adjusting groove 33 and is in threaded connection with the threaded groove 36;

the pressure sensor 38, the pressure sensor 38 is sleeved in the middle of the seventh roller 37;

the fixing rods 39 are arranged on two sides of the adjusting rod 35, and the fixing rods 39 are arranged at the top end of the shell 13;

the eighth roller 40, the eighth roller 40 is rotatably arranged in the middle of the fixing rod 39 through a rotating shaft;

and a ninth roller 41, wherein the ninth roller 41 is rotatably disposed on the fixing rod 39 through a rotating shaft, and the ninth roller 41 is located above the eighth roller 40.

The working principle of the technical scheme is as follows: in the actual use process, the outer protective material passes through the space between the eighth roller 40 and the ninth roller 41 of the first fixing rod 39, then passes through the lower part of the seventh roller 37, then passes through the space between the eighth roller 40 and the ninth roller 41 of the second fixing rod 39 and enters the automatic deviation rectifying device 12, the servo motor 32 is started to drive the threaded rod 34 to rotate, and the threaded rod 34 drives the seventh roller 37 on the adjusting rod 35 to move up and down through threads, so that the outer protective material is in a tightened state; in the process, the outer protective material generates pressure on the seventh roller 37, the pressure is detected by the pressure sensor 38, when the pressure is higher than a preset value, the tensioning force is over high, the servo motor 32 is adjusted to enable the seventh roller 37 to move upwards, the tensioning force is reduced, and the outer protective material is prevented from being elongated; when the pressure is lower than the preset value, which indicates that the tensioning force is too low, the servo motor 32 is adjusted to move the seventh roller 37 downward, so that the tensioning force is increased, and the outer protective material is prevented from being loosened.

The beneficial effects of the above technical scheme are that: through the structural design, when the outer protection material passes between the eighth roller 40 and the ninth roller 41 on the fixing rod 39, the eighth roller 40 and the ninth roller 41 can flatten the outer protection material with the wrap angle, so that the outer protection material is prevented from being subsequently corrected and folded into a pipe due to the influence of the wrap angle; meanwhile, the tensioning degree of the outer protection material can be adjusted through the tensioning device 31, the outer protection material is prevented from being stretched, so that the formed outer protection pipe becomes thin and the outer protection material is loosened to cause the outer protection pipe to be folded, and the quality of the manufactured outer protection pipe is improved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.