Heat preservation conveying pipe for asphalt production

Abstract

The utility model provides a heat preservation conveying pipe for asphalt production, belongs to the technical field of asphalt production equipment, and is used for solving the technical problems that an existing heat preservation conveying pipe for asphalt production is difficult to heat from the outside, and asphalt is difficult to remove when solidified on the inner wall of the pipe. Comprising a single-layer pipeline, flanges are arranged at the two ends of the single-layer pipeline, a thin metal plate is arranged on the outer side of the single-layer pipeline, a plurality of elastic metal sheets are fixed to the inner side of the thin metal plate, one side of each elastic metal sheet is fixed to the inner side of the thin metal plate, and the other side of each elastic metal sheet abuts against the outer side of the single-layer pipeline; a plurality of open hoop rings are arranged on the outer side of the thin metal plate, and tensioning assemblies are arranged at openings of the open hoop rings; according to the heat preservation conveying pipe for asphalt production, an air interlayer can be formed on the outer side of the single-layer pipeline, heat preservation can be conducted on asphalt flowing in the single-layer pipeline, heating can be conducted from the outside, the asphalt solidified on the inner wall of the single-layer pipeline is melted, and cleaning is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of asphalt production equipment and relates to a heat-insulating conveying pipe for asphalt production. Background Art

[0002] Asphalt is a dark brown complex mixture of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid. It is in liquid state, black on the surface, and soluble in carbon disulfide. Asphalt is an organic gelling material that is waterproof, moisture-proof and anti-corrosive. Asphalt is mainly used in industries such as coatings, plastics, rubber, and road paving. In the process of producing asphalt, a variety of equipment is required, and it is transported between equipment through insulated pipelines.

[0003] After searching, it is found that a thermal pipeline insulation structure is disclosed in Chinese patent documents [Application number: CN202123238688.1; Publication number: CN217056844U]. This insulated pipeline includes a pipeline body, a first insulation layer, a support layer A, a second insulation layer and a support layer B. The first insulation layer is arranged in an annular array on the outer surface of the pipeline body, and the outer surfaces of the first insulation layer are respectively fixedly connected to the support layer A, and the second insulation layer is connected to the outer surface of the support layer A. Although the inside of the pipeline can be insulated by the first insulation layer and the second insulation layer, when the asphalt solidifies on the inner wall of the pipeline and needs to be heated and melted from the outside, the insulation layer is difficult to disassemble and the solidified asphalt is difficult to clean.

[0004] Based on this, we designed an insulated conveying pipe for asphalt production. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the existing technology and propose an insulated conveying pipe for asphalt production. The technical problem to be solved by the device is: how to heat the insulated conveying pipe for asphalt production from the outside to remove the asphalt solidified on the inner wall of the pipe.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An insulated conveying pipe for asphalt production comprises a single-layer pipe, flanges for connection are arranged at both ends of the single-layer pipe, a thin metal plate is arranged on the outside of the single-layer pipe, and the thin metal plate is bent in a cylindrical shape and sleeved on the outside of the single-layer pipe, a plurality of elastic metal sheets for supporting the thin metal plate from the inside are fixed to the inside of the thin metal plate, and one side of the elastic metal sheet is fixed to the inside of the thin metal plate, and the other side is abutted against the outside of the single-layer pipe, a fixing ring is fixed on the flange, and the fixing ring is located on the outside of the single-layer pipe, and the outside of the thin metal plate is in contact with the inner wall of the fixing ring, a plurality of open hoops are arranged on the outside of the thin metal plate, and a tensioning assembly is arranged at the opening of the open hoops.

[0008] The tensioning assembly includes a rotating plate, which is provided with two arc grooves symmetrically distributed in the center. Fixed pins are fixed at both ends of the open hoop, and an annular groove is provided on the fixed pin. The fixed pin is slidably set in the arc groove at the corresponding position, and the annular groove is engaged with the arc groove. Two symmetrically distributed handles are fixed on the outer side of the rotating plate.

[0009] With the above structure, when in use, the operator turns the handle to drive the rotating plate to rotate, and under the action of the two arc grooves, the two fixing pins are tightened against each other, thereby tightening the open hoop. At this time, the open hoop tightens the thin metal plate, and the two sides of the thin metal plate overlap and tighten inward, pressing the elastic metal sheet completely against the outside of the single-layer pipe, so that the thin metal plate, the elastic metal sheet and the single-layer pipe fit tightly. At this time, heating can be carried out from the outside, and heat is transferred to the single-layer pipe through the thin metal plate and the elastic metal sheet to melt the solidified asphalt on the inner wall of the single-layer pipe, so that it can flow out mixed with the asphalt flowing in the single-layer pipe, making it easier to remove.

[0010] A high temperature resistant heat insulation strip is fixed to one side edge of the elastic metal sheet, and the high temperature resistant heat insulation strip abuts against the outer side of the single-layer pipe.

[0011] With the above structure, during normal use, the elastic metal sheet opens the thin metal plate so that the outer side of the thin metal plate fits with the open hoop and the fixed ring. At this time, there is an air barrier between the thin metal plate and the single-layer pipe. The air barrier has poor flow and good thermal insulation effect, so it can achieve good thermal insulation effect. Moreover, the single-layer pipe and the elastic metal sheet are separated by a high-temperature resistant insulation strip so that the two are not in direct contact, further improving the thermal insulation effect.

[0012] The fixing ring is provided with an oblique notch, and two handles are fixed on the edge of the thin metal plate, and the handles are located beside the fixing ring.

[0013] With the above structure, during assembly, the operator can insert both sides of the thin metal plate into the interior of the fixing ring along the inclined groove, and pull the thin metal plate by the handle so that the thin metal plate can be sleeved on the outside of the single-layer pipe. Similarly, the thin metal plate can also be disassembled to facilitate the inspection of the single-layer pipe to see if it is damaged and to facilitate the replacement of the thin metal plate damaged by long-term use.

[0014] The rotating plate is provided with two opening grooves which are symmetrically distributed around the center, and the opening grooves are connected with the arc grooves at corresponding positions.

[0015] With the above structure, when removing the open hoop, the rotating plate can be rotated in the opposite direction by the handle so that the fixing pin slides out of the open groove, the rotating plate can be removed, and then the open hoop can be removed. The installation can also be carried out in the same way, which is convenient for the operator to install and remove the open hoop.

[0016] Compared with the existing technology, this asphalt production insulation pipe has the following advantages:

[0017] 1. Through thin metal plates, elastic metal sheets, fixing rings, open hoop rings and tensioning components, an air barrier can be formed on the outside of the single-layer pipe to insulate the asphalt flowing in the single-layer pipe. In addition, the thin metal plates, elastic metal sheets and single-layer pipes can be attached and heated from the outside to melt the asphalt solidified on the inner wall of the single-layer pipe, making cleaning more convenient.

[0018] 2. Through the handle and the fixing ring, the thin metal plates on both sides can be inserted into the fixing ring along the inclined groove or taken out from the fixing ring, which is convenient for inspecting whether the single-layer pipeline is damaged and replacing the thin metal plates damaged by long-term use.

[0019] 3. The single-layer pipe is separated from the elastic metal sheet by a high-temperature resistant insulation strip so that the two are not in direct contact, which reduces the heat transfer effect and further improves the insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the tensioning assembly in the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the thin metal plate and the elastic metal sheet in the utility model;

[0023] Figure 4 This utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 5 It is a structural schematic diagram of the fixing ring in the utility model.

[0025] In the figure: 1. Single-layer pipe; 2. Flange; 3. Thin metal plate; 4. Fixed ring; 5. Elastic metal sheet; 6. Open hoop; 7. Tensioning assembly; 701. Fixed pin; 702. Annular groove; 703. Rotating plate; 704. Arc groove; 705. Handle; 706. Open groove; 8. High temperature resistant insulation strip; 9. Oblique groove; 10. Handle. DETAILED DESCRIPTION

[0026] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0029] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0030] See also Figure 1-5 The present embodiment provides an insulated conveying pipe for asphalt production, comprising a single-layer pipe 1, flanges 2 for connection are arranged at both ends of the single-layer pipe 1, a thin metal plate 3 is arranged on the outside of the single-layer pipe 1, and the thin metal plate 3 is bent in a cylindrical shape and sleeved on the outside of the single-layer pipe 1, a plurality of elastic metal sheets 5 for supporting the thin metal plate 3 from the inside are fixed to the inside of the thin metal plate 3, and one side of the elastic metal sheet 5 is fixed to the inside of the thin metal plate 3, and the other side is against the outside of the single-layer pipe 1, a fixing ring 4 is fixed on the flange 2, and the fixing ring 4 is located on the outside of the single-layer pipe 1, and the outside of the thin metal plate 3 is in contact with the inner wall of the fixing ring 4, a plurality of open hoops 6 are arranged on the outside of the thin metal plate 3, and a tensioning assembly 7 is arranged at the opening of the open hoops 6.

[0031] The tensioning assembly 7 includes a rotating plate 703, on which two arc grooves 704 are symmetrically distributed. A fixing pin 701 is fixed to both ends of the open hoop 6, and an annular groove 702 is provided on the fixing pin 701. The fixing pin 701 is slidably arranged in the arc groove 704 at the corresponding position, and the annular groove 702 is engaged with the arc groove 704. Two symmetrically distributed handles 705 are fixed to the outer side of the rotating plate 703. When in use, the operator turns the handle 705 to drive the rotating plate 703 to rotate. Under the action of the two arc grooves 704, the rotating plate 703 is rotated. , pull the two fixing pins 701 against each other, and then tighten the open hoop 6. At this time, the open hoop 6 tightens the thin metal plate 3, and the two sides of the thin metal plate 3 overlap and tighten inward, and the elastic metal sheet 5 is completely pressed against the outside of the single-layer pipe 1, so that the thin metal plate 3, the elastic metal sheet 5 and the single-layer pipe 1 fit tightly. At this time, heating can be performed from the outside, and the heat is transferred to the single-layer pipe 1 through the thin metal plate 3 and the elastic metal sheet 5, so as to melt the solidified asphalt on the inner wall of the single-layer pipe 1, so that it can flow out with the asphalt flowing in the single-layer pipe 1, and it is more convenient to remove.

[0032] A high-temperature resistant heat-insulating strip 8 is fixed to one edge of the elastic metal sheet 5, and the high-temperature resistant heat-insulating strip 8 is against the outer side of the single-layer pipe 1; in normal use, the elastic metal sheet 5 opens the thin metal plate 3, so that the outer side of the thin metal plate 3 fits with the open hoop 6 and the fixing ring 4. At this time, there is an air barrier between the thin metal plate 3 and the single-layer pipe 1. The air barrier has poor flow and good thermal insulation effect, so it can achieve good thermal insulation effect. Moreover, the single-layer pipe 1 and the elastic metal sheet 5 are separated by the high-temperature resistant heat-insulating strip 8, so that the two are not in direct contact, further improving the thermal insulation effect.

[0033] An oblique slot 9 is provided on the fixing ring 4, and two handles 10 are fixed on the edge of the thin metal plate 3, and the handles 10 are located next to the fixing ring 4; during assembly, the operator can insert both sides of the thin metal plate 3 into the fixing ring 4 along the oblique slot 9, and pull the thin metal plate 3 through the handles 10, so that the thin metal plate 3 can be sleeved on the outside of the single-layer pipe 1. Similarly, the thin metal plate 3 can also be disassembled, which is convenient for inspecting whether the single-layer pipe 1 is damaged and for replacing the thin metal plate 3 damaged by long-term use.

[0034] Two centrally symmetrically distributed open grooves 706 are provided on the rotating plate 703, and the open grooves 706 are connected to the arc grooves 704 at the corresponding positions; when removing the open hoop 6, the rotating plate 703 can be rotated in the opposite direction by the handle 705 so that the fixing pin 701 slides out of the open groove 706, and the rotating plate 703 can be removed, and then the open hoop 6 can be removed, and the installation can also be carried out in the same way, which is convenient for the operator to install and remove the open hoop 6.

[0035] In this embodiment, the above-mentioned fixing methods are the most commonly used fixing connection methods in the art, such as welding, bolt connection, etc.

[0036] The working principle of this utility model:

[0037] During normal use, the elastic metal sheet 5 opens the thin metal plate 3 so that the outer side of the thin metal plate 3 fits with the open hoop 6 and the fixing ring 4. At this time, there is an air barrier between the thin metal plate 3 and the single-layer pipe 1. The air barrier has poor flow and good thermal insulation effect, so it can achieve good thermal insulation effect. In addition, the single-layer pipe 1 and the elastic metal sheet 5 are separated by a high-temperature resistant insulation strip 8 so that the two are not in direct contact, further improving the thermal insulation effect. When asphalt solidifies on the inner wall of the single-layer pipe 1, the operator turns the handle 705 to drive the rotating plate 703 to rotate. Under the action of the two arc grooves 704, the two fixing pins 701 are tightened against each other, thereby tightening the open hoop 6. At this time, the open hoop 6 tightens the thin metal plate 3, and the two sides of the thin metal plate 3 overlap and tighten inward, completing the elastic metal sheet 5. The thin metal plate 3, the elastic metal sheet 5 and the single-layer pipe 1 are fully pressed against the outer side of the single-layer pipe 1, so that the thin metal plate 3, the elastic metal sheet 5 and the single-layer pipe 1 are tightly fitted. At this time, heating can be performed from the outside, and the heat is transferred to the single-layer pipe 1 through the thin metal plate 3 and the elastic metal sheet 5, so as to melt the solidified asphalt on the inner wall of the single-layer pipe 1, so that it can flow out mixed with the asphalt flowing in the single-layer pipe 1, and it is more convenient to remove. In addition, when it is necessary to inspect whether the single-layer pipe 1 is damaged or to replace the thin metal plate 3 damaged by long-term use, the handle 705 can be used to rotate the rotating plate 703 in the opposite direction so that the fixing pin 701 slides out of the open groove 706, and the rotating plate 703 can be removed, and then the open hoop 6 can be removed, and then the thin metal plate 3 can be pulled out along the inclined groove 9 through the handle 10, so that it can be inspected or replaced. Similarly, it can also be installed, and the operation is convenient.

[0038] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A heat-insulated transport pipe for asphalt production, comprising a single-layer pipe (1), characterized in that: Flanges (2) for connection are provided at both ends of the single-layer pipe (1); a thin metal plate (3) is provided on the outside of the single-layer pipe (1); the thin metal plate (3) is bent in a cylindrical shape and sleeved on the outside of the single-layer pipe (1); a plurality of elastic metal sheets (5) for supporting the thin metal plate (3) from the inside are fixed on the inside of the thin metal plate (3); one side of the elastic metal sheet (5) is fixed to the inside of the thin metal plate (3); the other side is abutted against the outside of the single-layer pipe (1); a fixing ring (4) is fixed on the flange (2); the fixing ring (4) is located on the outside of the single-layer pipe (1); the outside of the thin metal plate (3) is in contact with the inner wall of the fixing ring (4); a plurality of open hoops (6) are provided on the outside of the thin metal plate (3); and a tensioning assembly (7) is provided at the opening of the open hoops (6).

2. The heat-insulated delivery pipe for asphalt production according to claim 1, characterized in that: The tensioning assembly (7) comprises a rotating plate (703), on which two arc grooves (704) are arranged symmetrically with respect to the center. A fixing pin (701) is fixed at both ends of the open hoop (6), and an annular groove (702) is arranged on the fixing pin (701). The fixing pin (701) is slidably arranged in the arc groove (704) at a corresponding position, and the annular groove (702) is engaged with the arc groove (704). Two symmetrically arranged handles (705) are fixed on the outer side of the rotating plate (703).

3. The heat-insulated delivery pipe for asphalt production according to claim 1 or 2, characterized in that: A high temperature resistant heat insulating strip (8) is fixed to one side edge of the elastic metal sheet (5), and the high temperature resistant heat insulating strip (8) abuts against the outer side of the single-layer pipe (1).

4. The heat-insulated delivery pipe for asphalt production according to claim 1, characterized in that: The fixing ring (4) is provided with an oblique notch (9), and two handles (10) are fixed on the edge of the thin metal plate (3), and the handles (10) are located beside the fixing ring (4).

5. The heat-insulated delivery pipe for asphalt production according to claim 2, characterized in that: The rotating plate (703) is provided with two centrally symmetrically distributed open grooves (706), and the open grooves (706) are connected to the arc grooves (704) at corresponding positions.

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