An extruded pipe insulation device

Abstract

This invention relates to an extruded pipe insulation device for pipe insulation, comprising a static mixer and a heating assembly. The static mixer is fixedly disposed in the pipe, and a cavity is formed inside the static mixer, extending along the length of the pipe. The heating assembly has a heating end that communicates with the cavity of the static mixer for delivering a heating medium into the cavity. By modifying the static mixer to form a cavity inside, the heating medium is delivered into the cavity through the heating end of the heating assembly, causing the static mixer to acquire heat, which heats the molten material from inside the pipe. The heat dissipates outwards, resulting in good insulation of the molten material.

Description

Technical Field

[0001] This invention relates to the field of plastics technology, and more particularly to an extruded pipe insulation device. Background Technology

[0002] In the plastic production process, the molten material is transported through pipes to an extruder to form strips of plastic, which are then granulated by a pelletizer to form pellets of the required diameter. To ensure the temperature of the molten material inside the pipe, heating rings are usually installed on the outer wall of the pipe to prevent the cooled molten material from solidifying and affecting its flow within the pipe.

[0003] For example, the invention application with application number CN202011609478.6 proposes a plastic granulator, which includes a base plate, support plates, a screw extruder, an electric heating ring, and a feed hopper. The support plates are symmetrically fixed on the upper surface of the base plate, and the screw extruder is fixed on the top of the two support plates. The electric heating ring is fixed at equal intervals on the surface of the screw extruder.

[0004] However, the aforementioned electric heating ring can only heat the outside of the pipe, resulting in poor heat preservation. Summary of the Invention

[0005] In view of this, it is necessary to provide an extruded pipe insulation device to solve the problem that the electric heating ring can only heat the outside of the pipe and has poor insulation effect.

[0006] This invention provides an extruded pipe insulation device for pipe insulation, comprising a static mixer and a heating assembly. The static mixer is fixedly disposed in the pipe, and a cavity is formed inside the static mixer, which extends along the length of the pipe. The heating assembly has a heating end, which is connected to the cavity of the static mixer for conveying a heating medium into the cavity.

[0007] Furthermore, the static mixer includes a plurality of blades arranged sequentially along the length of the pipe, the plurality of blades being connected in sequence, a spiral channel being formed between the plurality of blades and the inner wall of the pipe, and the cavity being formed inside the plurality of blades.

[0008] Furthermore, each blade includes two opposing spiral blades, which are fixedly connected and have their opposite sides recessed inward to form a groove, and the two grooves are joined together to form the cavity.

[0009] Furthermore, it also includes multiple connecting pipes, which are respectively connected to two adjacent blades and communicate with the cavity inside the blades. The heating end of the heating assembly is connected to the multiple connecting pipes.

[0010] Furthermore, both ends of the connecting tube are fixedly connected to annular abutments, which are built into the cavity of the blade. Both ends of the connecting tube are threaded with nuts, and a clamping gap is formed between the nuts and the abutments to fix the blade. A sealing ring is provided on the side of the abutment near the nut, and the sealing ring abuts against the inner wall of the blade.

[0011] Furthermore, the heating assembly includes an inlet pipe and an outlet pipe, the inlet pipe being connected to one side of the cavity of the static mixer, and the outlet pipe being connected to the other side of the cavity of the static mixer.

[0012] Furthermore, there are multiple inlet pipes and multiple outlet pipes, and the multiple inlet pipes and multiple outlet pipes are arranged sequentially along the length direction of the static mixer.

[0013] Furthermore, it also includes a conveying pipe, one end of which is connected to the exhaust end of the melting equipment via a blower, and the other end of which is connected to the cavity of the static mixer via the inlet pipe.

[0014] Furthermore, it also includes a return box, the top of which is provided with an exhaust port, and the bottom end of the outlet pipe extends into the return box.

[0015] Furthermore, it also includes an insulation sleeve, which is coaxially sleeved outside the pipe, forming an insulation cavity between the insulation sleeve and the pipe. The heating end of the heating component is connected to the insulation cavity to deliver the heating medium into the insulation cavity.

[0016] Compared with existing technologies, by modifying the static mixer to form an internal cavity, the heating medium is delivered into the cavity through the heating end of the heating component, so that the static mixer is equipped with heat, and the molten material is heated from the inside of the pipe. The heat is dissipated in all directions, resulting in a good heat preservation effect on the molten material. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the extruded pipe insulation device provided in an embodiment of the present invention;

[0018] Figure 2 The extruded pipe insulation device provided in the embodiments of the present invention Figure 1 Enlarged diagram of section A in the middle;

[0019] Figure 3 This is a schematic diagram of the installation of the insulation sleeve in the extruded pipe insulation device provided in an embodiment of the present invention. Detailed Implementation

[0020] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1 As shown, the present invention provides an extruded pipe insulation device for insulating pipe 100, including a static mixer 200 and a heating component 300. The static mixer 200 is fixedly disposed in the pipe 100, and a cavity is formed inside the static mixer 200. The cavity extends along the length direction of the pipe 100. The heating component 300 has a heating end, which is connected to the cavity of the static mixer 200 to deliver a heating medium into the cavity.

[0022] In practice, the static mixer 200 is modified to form a cavity inside. The heating medium is delivered to the cavity through the heating end of the heating component 300, so that the static mixer 200 is equipped with heat. The heat is then distributed to the inside of the pipe 100 to heat the molten material. The heat is then dissipated to the surroundings, resulting in good heat preservation of the molten material.

[0023] This embodiment of the insulation device is suitable for insulation of the pipeline 100 that conveys molten material to the extruder.

[0024] In this embodiment, the static mixer 200 is fixedly installed in the pipe 100, and a cavity is formed inside the static mixer 200, which extends along the length of the pipe 100. The static mixer 200 is a structure used to continuously adjust the direction of the molten material's movement within the pipe 100. As the material flows along the gap between the pipe 100 and the static mixer 200, the static mixer 200 continuously changes the direction of the molten material's movement, thereby ensuring uniform mixing of the molten material.

[0025] In one embodiment, the static mixer 200 includes a plurality of blades arranged sequentially along the length of the pipe 100, the plurality of blades being connected in sequence, a spiral channel being formed between the plurality of blades and the inner wall of the pipe 100, and cavities being formed inside the plurality of blades.

[0026] To facilitate the formation of the aforementioned cavity, each blade includes two opposing spiral blades, which are fixedly connected and have their opposite sides recessed inward to form a groove. The two grooves are joined together to form a cavity.

[0027] like Figure 2 As shown, in order to facilitate the connection of multiple blades, in one embodiment, multiple connecting pipes 311 are also included. The connecting pipes 311 are respectively connected to two adjacent blades and communicate with the cavity inside the blade. The heating end of the heating assembly 300 is connected to the multiple connecting pipes 311.

[0028] Both ends of the connecting pipe 311 are fixedly connected to annular abutment joints 312, which are built into the cavity of the blade. Both ends of the connecting pipe 311 are threaded with nuts 313, and a clamping gap is formed between the nuts 313 and the abutment joints 312 to fix the blade. A sealing ring 314 is provided on the side of the abutment joint 312 near the nuts 313, and the sealing ring 314 abuts against the inner wall of the blade.

[0029] It is understandable that the static mixer 200 described above can also be replaced by other structural forms. Its shape is a structure that can be conceived by those skilled in the art and has not been improved. The main improvement direction is the cavity formed inside it.

[0030] The heating component 300 in this embodiment has a heating end that is connected to the cavity of the static mixer 200 for conveying a heating medium into the cavity. It is understood that the heating medium can be hot water or hot gas.

[0031] In one embodiment, the heating assembly 300 includes an inlet pipe 310 and an outlet pipe 320, the inlet pipe 310 being connected to one side of the cavity of the static mixer 200, and the outlet pipe 320 being connected to the other side of the cavity of the static mixer 200.

[0032] In order to ensure that the heating medium is evenly distributed in the cavity of the static mixer 200, in one embodiment, there are multiple inlet pipes 310 and multiple outlet pipes 320, and the multiple inlet pipes 310 and multiple outlet pipes 320 are arranged sequentially along the length direction of the static mixer 200.

[0033] In order to deliver the heating medium to the multiple inlet pipes 310, a delivery pipe 330 is also included. One end of the delivery pipe 330 is connected to the exhaust end of the melting equipment via a blower, and the other end of the delivery pipe 330 is connected to the cavity of the static mixer 200 via the inlet pipe 310.

[0034] The inlet pipe 310 is located above the static mixer 200, and the outlet pipe 320 is located below the static mixer 200, connected to the lowest point of the static mixer 200, to facilitate the discharge of the medium after heat exchange with the static mixer 200. Generally, hot water, after heat exchange, has a lower temperature and can be discharged through the outlet pipe 320, while condensate formed after heat exchange with hot air can also be discharged through the outlet pipe 320.

[0035] In order to recover the heating medium after heat exchange, in one embodiment, a return box 340 is also included, the top of which is provided with an exhaust port, and the bottom end of the outlet pipe 320 extends into the return box 340.

[0036] like Figure 3As shown, in order to simultaneously achieve external heat insulation treatment of the pipe 100 using the above-mentioned heating medium, this embodiment also includes a heat insulation sleeve 400. The heat insulation sleeve 400 is coaxially sleeved outside the pipe 100, and a heat insulation cavity is formed between the heat insulation sleeve 400 and the pipe 100. The heating end of the heating component 300 is connected to the heat insulation cavity to deliver the heating medium to the heat insulation cavity.

[0037] It should be noted that the inlet pipe 310, pipe 100, and insulation sleeve 400 must be kept sealed. Similarly, the outlet pipe 320, pipe 100, and insulation sleeve 400 must also be kept sealed. It is understood that pipe 100 can be composed of two opposing semi-circular pipes. After the static mixer 200 and heating assembly 300 are installed, the two semi-circular pipes are then connected to complete the installation of the insulation device.

[0038] Compared with the existing technology: By modifying the static mixer 200 to form a cavity inside, the heating medium is delivered to the cavity through the heating end of the heating component 300, so that the static mixer 200 is equipped with heat, and the molten material is heated from the inside of the pipe 100. The heat is dissipated to the surroundings, and the heat preservation effect of the molten material is good.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An extruded pipe insulation device for pipe insulation, characterized in that, Includes a static mixer and heating components; The static mixer is fixedly installed in the pipe, and a cavity is formed inside the static mixer, which extends along the length of the pipe; The heating assembly has a heating end, which is connected to the cavity of the static mixer to deliver a heating medium into the cavity; The static mixer includes a plurality of blades arranged sequentially along the length of the pipe, the plurality of blades being connected in sequence, a spiral channel being formed between the plurality of blades and the inner wall of the pipe, and cavities being formed inside the plurality of blades; Each blade includes two opposing spiral blades, which are fixedly connected and have their opposite sides recessed inward to form a groove. The two grooves are joined together to form the cavity. It also includes multiple connecting pipes, which are respectively connected to two adjacent blades and communicate with the cavity inside the blades. The heating end of the heating assembly is connected to the multiple connecting pipes. Both ends of the connecting tube are fixedly connected to annular abutments, which are built into the cavity of the blade. Both ends of the connecting tube are threaded with nuts, and a clamping gap is formed between the nuts and the abutments to fix the blade. A sealing ring is provided on the side of the abutment near the nut, and the sealing ring abuts against the inner wall of the blade. It also includes an insulation sleeve, which is coaxially fitted outside the pipe, and an insulation cavity is formed between the insulation sleeve and the pipe. The heating end of the heating component is connected to the insulation cavity to deliver the heating medium into the insulation cavity.

2. The extruded pipe insulation device according to claim 1, characterized in that, The heating assembly includes an inlet pipe and an outlet pipe. The inlet pipe is connected to one side of the cavity of the static mixer, and the outlet pipe is connected to the other side of the cavity of the static mixer.

3. The extruded pipe insulation device according to claim 2, characterized in that, The number of inlet pipes and outlet pipes are both multiple, and the multiple inlet pipes and multiple outlet pipes are arranged sequentially along the length direction of the static mixer.

4. The extruded pipe insulation device according to claim 2, characterized in that, It also includes a conveying pipe, one end of which is connected to the exhaust end of the melting equipment via a blower, and the other end of which is connected to the cavity of the static mixer via the inlet pipe.

5. The extruded pipe insulation device according to claim 4, characterized in that, It also includes a return box, the top of which is provided with an exhaust port, and the bottom end of the outlet pipe extends into the return box.

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