Heating device for polyurethane thermal insulation pipe production

Abstract

The utility model discloses a heating device for polyurethane thermal insulation pipe production, which belongs to the field of polyurethane thermal insulation pipe production, solves the problem that the heat loss speed of the existing heating device is too fast because the existing heating device is exposed in air, and comprises a mold temperature controller main body, a control electric box and an oil pressure heating piece, a control electric box is installed on the side face of the mold temperature controller body, an oil pressure heating piece is installed on the upper surface of the mold temperature controller body, a heating mechanism for heating polyurethane materials is installed in the mold temperature controller body, and the heating mechanism comprises an outer pipeline, an inner pipeline, a spiral flow guide disc and an oil conveying pipe. The flowing time of oil in the inner pipeline and the outer pipeline can be prolonged, the oil can make full contact with the inner wall of the inner pipeline, stable conduction of heat is achieved, follow-up oil flows into a gap between the inner pipeline and the outer pipeline, the outer pipeline is controlled, heat loss caused by the fact that the outer pipeline is exposed in air is reduced, and stable control over the overall temperature is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polyurethane heat preservation pipe production field, concretely relates to a kind of heating device for polyurethane heat preservation pipe production. BACKGROUND

[0002] Polyurethane heat preservation pipeline, full name: high-density polyethylene plastic outer protection polyurethane foam prefabricated direct-buried heat preservation pipe, by the working steel pipe of conveying medium, polyurethane insulation layer, polyethylene plastic outer protection pipe, sequentially combined outward by equipment, wherein the main material is polyurethane, and now for polyurethane processing, generally using mould temperature machine to heat treat polyurethane material.

[0003] The present mould temperature machine is divided into a variety, and the most commonly used is to adopt the way of heating oil pressure to heat the pipeline in the machine, but there are certain problems in actual use, which is embodied in that the oil with heat is directly circulated from the pipeline to heat the pipeline. This way cannot keep the heat of the pipeline balanced because of the large exposed area of the pipeline surface, affecting the heating stability of the polyurethane material and easily causing the foaming of the polyurethane material. SUMMARY

[0004] This part aims to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract of the specification and the utility model name to avoid obscuring the purpose of this part, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the present utility model.

[0005] To solve the problems raised in the background art, the present utility model adopts the following technical solutions.

[0006] A kind of heating device for polyurethane heat preservation pipe production, including mould temperature machine main body, control electric box and oil pressure heating piece, control electric box is installed on the side of mould temperature machine main body, oil pressure heating piece is installed on the upper surface of mould temperature machine main body, heating mechanism for heating polyurethane material is installed in mould temperature machine main body, the heating mechanism includes outer pipeline, inner pipeline, spiral flow guide disc and oil pipe, outer pipeline is installed in mould temperature machine main body, inner pipeline is installed in outer pipeline, spiral flow guide disc is fixedly installed in inner pipeline, oil pipe is communicated on the side of inner pipeline.

[0007] As a preferred technical solution of the present utility model, the outer pipeline and the inner pipeline are concentric pipes, and a gap is left between the outer pipeline and the inner pipeline.

[0008] As a preferred technical solution of the present utility model, the heating mechanism further includes an inflow hole, and the inflow hole is symmetrically formed on one end of the inner pipeline and communicated with the gap between the outer pipeline and the inner pipeline.

[0009] As a preferred technical scheme of the utility model, the outer pipeline side is provided with a curved pipeline, the curved pipeline is communicated with the gap between the outer pipeline and the inner pipeline at both ends, and an output pipeline is installed on the curved pipeline.

[0010] As a preferred technical scheme of the utility model, the heating mechanism is externally provided with a mounting bracket which is connected with the inner wall of the mold temperature controller main body.

[0011] As a preferred technical scheme of the utility model, the oil pressure heating part comprises a heating bin, a liquid level meter and a communication pipeline, the mold temperature controller main body is provided with the heating bin on the upper surface, the heating bin is provided with the liquid level meter on the side surface, and the heating bin is provided with the communication pipeline on the lower surface, and the communication pipeline is connected with the mold temperature controller main body.

[0012] As a preferred technical scheme of the utility model, the communication pipeline is provided with two groups, which are an inlet pipeline and an output pipeline.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] In the utility model, the heating mechanism is arranged, the oil flow time in the inner and outer pipelines is prolonged, the oil can fully contact with the inner wall of the inner pipeline, the stable heat conduction is realized, the oil flows into the gap between the inner and outer pipelines in sequence, the outer pipeline is controlled, the heat loss of the outer pipeline due to exposure to air is reduced, the stable control of the overall temperature is realized, the polyurethane material can be heated more stably, and the working quality of the equipment as a whole is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure of the utility model.

[0016] Figure 2 It is the internal structure of the mold temperature controller main body of the utility model.

[0017] Figure 3 It is the external structure of the heating mechanism of the utility model.

[0018] Figure 4 It is the structure schematic view of the heating mechanism in the utility model.

[0019] Figure 5 It is the structure schematic view of the oil pressure heating part in the utility model.

[0020] Figure 6 It is the structure schematic view of the oil pressure heating part.

[0021] The corresponding relationship between the annotations of the drawings and the component names in the drawings is as follows:

[0022] 1, mold temperature machine main body; 2, control electric box; 3, oil pressure heating piece; 31, heating bin; 32, liquid level meter; 33, communication pipeline; 4, heating mechanism; 41, outer pipeline; 42, inner pipeline; 43, spiral guide disc; 44, oil delivery pipe; 45, inflow hole; 46, curved pipeline. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0025] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it a separate or alternative embodiment. The present application provides the following embodiments.

[0026] As shown by Figure 1 , Figure 2 and Figure 3 , it is a structure diagram of the heating device for polyurethane insulation pipe production in the embodiment, which comprises a mold temperature machine main body 1, a control electric box 2 and an oil pressure heating piece 3, the control electric box 2 is installed on the side of the mold temperature machine main body 1, and the oil pressure heating piece 3 is installed on the upper surface of the mold temperature machine main body 1, the heating mechanism 4 for heating the polyurethane material is installed in the mold temperature machine main body 1, and the installation support is symmetrically installed outside the heating mechanism 4, and the installation support is connected with the inner wall of the mold temperature machine main body 1.

[0027] In use, the oil pressure heating piece 3 is started, the oil inside the oil pressure heating piece 3 is heated, when the oil is heated to a certain temperature, the oil inside the oil pressure heating piece 3 is input into the mold temperature machine main body 1, the oil is input into the heating mechanism 4 through the pipeline in the mold temperature machine main body 1, the polyurethane material on the heating mechanism 4 is heated, and the heated oil will flow into the oil pressure heating piece 3 again to realize reheating and realize the recycling of the oil.

[0028] As shown by the accompanying Figure 4 and Figure 5As shown, this is a schematic diagram of the heating mechanism 4 in this embodiment. The heating mechanism 4 includes an outer pipe 41, an inner pipe 42, a spiral guide plate 43, an oil supply pipe 44, an inlet hole 45, and a curved pipe 46. The outer pipe 41 is installed inside the mold temperature controller body 1, and the inner pipe 42 is installed inside the outer pipe 41. The spiral guide plate 43 is fixedly installed inside the inner pipe 42. The oil supply pipe 44 is connected to the side of the inner pipe 42. The outer pipe 41 and the inner pipe 42 are concentric circular pipes, and there is a gap between the outer pipe 41 and the inner pipe 42. The inlet hole 45 is symmetrically opened at one end of the inner pipe 42, and the inlet hole 45 is connected to the gap between the outer pipe 41 and the inner pipe 42. The curved pipe 46 is installed on the side of the outer pipe 41, and the two ends of the curved pipe 46 are connected to the gap between the outer pipe 41 and the inner pipe 42. An output pipe is installed on the curved pipe 46.

[0029] During use, oil is introduced into the inner pipe 42 through the oil supply pipe 44. The oil itself carries heat to heat the entire temperature of the inner pipe 42. During the flow, the oil moves in a spiral shape along the outer surface of the spiral guide plate 43, which prolongs the flow time of the oil inside the heating mechanism 4, allowing the oil to stably heat the entire temperature of the heating mechanism 4 and achieve the purpose of temperature equalization control.

[0030] When the oil flows along the spiral guide plate 43 to the end of the inner pipe 42, the oil will pass through the inlet hole 45 and enter the gap between the outer pipe 41 and the inner pipe 42. At this time, the temperature of the oil itself drops, but the remaining heat of the oil can be used to control the temperature of the part of the heating mechanism 4 that is in the greatest contact with air, so as to achieve the purpose of double-layer temperature control. When heating polyurethane material, which has high temperature requirements, it can be more stable.

[0031] Oil passing through the gap will be collected in a concentrated manner through the curved pipe 46. The collected oil will flow back into the oil pressure heating element 3 through the output pipe, thus completing the repeated recycling of oil.

[0032] From the appendix Figure 6 As shown, this is a schematic diagram of the structure of the hydraulic heating element 3 in this embodiment. The hydraulic heating element 3 includes a heating chamber 31, a level gauge 32, and a connecting pipe 33. The heating chamber 31 is installed on the upper surface of the mold temperature controller body 1, the level gauge 32 is installed on the side of the heating chamber 31, and the connecting pipe 33 is installed on the lower surface of the heating chamber 31. The connecting pipe 33 is connected to the mold temperature controller body 1. There are two sets of connecting pipes 33, which are divided into inlet pipes and outlet pipes.

[0033] In use, the operation of heating the internal heater of the heating bin 31 heats the temperature of the oil stored in the heating bin 31, and when the oil in the heating bin 31 is heated to a preset temperature, the oil flows into the mold temperature machine body 1 through the output pipeline, and is input into the oil delivery pipe 44 through the cooperation of the pump body and the pipeline in the mold temperature machine body 1, realizing the heating and temperature control of the oil.

[0034] The above is a further detailed description of the utility model in combination with the specific implementation, which cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, which should be regarded as belonging to the protection range determined by the claims submitted by the utility model.

Claims

1. A heating device for producing polyurethane insulation pipes, comprising a mold temperature controller body (1), a control box (2), and a hydraulic heating element (3), wherein the control box (2) is mounted on the side of the mold temperature controller body (1), and the hydraulic heating element (3) is mounted on the upper surface of the mold temperature controller body (1), characterized in that: The mold temperature controller body (1) is provided with a heating mechanism (4) for heating polyurethane material, which comprises an outer pipeline (41), an inner pipeline (42), a spiral flow guide disc (43) and an oil pipeline (44).

2. The heating device for polyurethane pipe production according to claim 1, characterized in that: The outer pipeline (41) and the inner pipeline (42) are concentric pipes, and a gap is left between the outer pipeline (41) and the inner pipeline (42).

3. The heating device for polyurethane pipe production according to claim 2, characterized in that: The heating mechanism (4) further comprises an inflow hole (45), which is symmetrically arranged at one end of the inner pipeline (42) and communicates with the gap between the outer pipeline (41) and the inner pipeline (42).

4. The heating device for polyurethane pipe production according to claim 3, characterized in that: The outer pipeline (41) is provided with a curved pipeline (46) on the side, which communicates with the gap between the outer pipeline (41) and the inner pipeline (42) at both ends, and the curved pipeline (46) is provided with an output pipeline.

5. The heating device for polyurethane pipe production according to claim 4, characterized in that: The heating mechanism (4) is symmetrically provided with a mounting bracket outside, which is connected with the inner wall of the mold temperature controller body (1).

6. The heating device for polyurethane pipe production according to claim 1, characterized in that: The oil pressure heating part (3) comprises a heating bin (31), a liquid level meter (32) and a communication pipeline (33), the heating bin (31) is installed on the upper surface of the mold temperature controller body (1), the liquid level meter (32) is installed on the side of the heating bin (31), the communication pipeline (33) is installed on the lower surface of the heating bin (31) and is connected with the mold temperature controller body (1).

7. The heating device for polyurethane pipe production according to claim 6, characterized in that: The communication pipeline (33) is provided with two groups, which are divided into an inlet pipeline and an outlet pipeline.

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