Extruder head capable of reducing production energy consumption of PVC (Polyvinyl Chloride) pipeline

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) pipeline production, in particular to an extruder head capable of reducing PVC pipeline production energy consumption, which comprises a shell, an inner core and a feed port, a spiral channel is formed between the shell and the rear side of the inner core, and a discharge channel is formed between the shell and the front side of the inner core. The middle of the inner core is sunken inwards, a buffering cavity is formed between the inner core and the machine shell, a plurality of sets of electric heaters are installed on the outer surface of the machine shell, and heat conduction plates extending into the buffering cavity are connected to the electric heaters. Through the arrangement of the buffering cavity, the flow speed of materials can be slowed down when the materials pass through the buffering cavity, after the electric heater is started, the heat conduction plates extending into the buffering cavity can generate heat, and then the materials can be heated from the interior of the buffering cavity, so that the materials can be in sufficient contact with the surfaces of the multiple groups of heat conduction plates, and the materials are sufficiently heated; and meanwhile, heat lost to the outer side of the machine shell is effectively reduced, the material processing temperature is guaranteed, and meanwhile energy consumption generated by material heating is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC pipe production, in particular to an extruder head capable of reducing energy consumption in PVC pipe production. Background Art

[0002] PVC pipe extruder is a kind of equipment specially used for processing PVC pipes. It can extrude the PVC pipe material after plasticizing it through the die head.

[0003] Chinese patent CN213055888U discloses a rotary extruder head for plastic pipes. The head body, the heating resistor, and the groove are used in conjunction with each other to achieve the purpose of heating the plastic in the external thread groove through the heating resistor, thereby preventing the plastic from clogging. The connecting plate, the first fixing plate, and the second fixing plate are provided to achieve the purpose of quick installation and removal of the connecting plate, thereby facilitating maintenance of the internal heating resistor. However, this extruder head heats the plastic by wrapping the heating resistor around the groove when the plastic flows in the flow channel and the external thread groove. However, since the heating resistor is directly arranged on the outside of the head, a large amount of heat will be directly lost to the external environment during operation, thereby causing energy waste. At the same time, since the distance between the thread groove and the inner wall of the casing is small, the flow rate of the material here is fast, so it is difficult for the material to fully absorb the heat of the heating resistor during flow. If the processing temperature of the material is to be guaranteed, the heating resistor needs to generate higher heat, which further exacerbates the heat loss of the heating resistor and further causes energy waste. Utility Model Content

[0004] The utility model provides an extruder head for reducing energy consumption in PVC pipe production, solving the technical problem in the prior art of wasting energy while heating materials.

[0005] In view of the above problems, the technical solution proposed by the present invention is:

[0006] An extruder head for reducing energy consumption in PVC pipe production comprises a casing, an inner core, and a feed port, wherein a spiral channel is formed between the casing and the rear side of the inner core, and a discharge channel is formed between the casing and the front side of the inner core. The invention is characterized in that the middle portion of the inner core is recessed inwardly and forms a buffer cavity between the inner core and the casing, and several groups of electric heaters are mounted on the outer surface of the casing, and the electric heaters are connected to heat conducting plates extending into the buffer cavity.

[0007] Furthermore, the inner core is connected to the inner wall of the casing via a plurality of connecting rods.

[0008] Furthermore, a glass fiber heat insulation layer is provided in the outer wall of the casing.

[0009] Furthermore, the heat conducting plate is in a thin sheet structure, and is arranged toward the axial direction of the housing.

[0010] Furthermore, a filter is provided in the feed port.

[0011] Furthermore, the heat conducting plate is made of glass ceramics, and a heating wire distributed in a bent state is arranged inside the heat conducting plate.

[0012] Compared with the prior art, the beneficial effect of the present invention is that by setting up a buffer chamber, the flow rate of the material will slow down when passing through the buffer chamber. After the electric heater is started, the heat conduction plate extended into the buffer chamber can generate heat, and then the material can be heated from the inside of the buffer chamber, so that the material can fully contact the surface of several groups of heat conduction plates, so that the material is fully heated, and at the same time, the heat loss to the outside of the casing is effectively reduced, while ensuring the material processing temperature while also reducing the energy consumption generated by heating the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the utility model;

[0016] Figure 3 This is a schematic structural diagram of the inner core and connecting rod in the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the casing in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the heat conducting plate and the heating wire in the utility model.

[0019] In the figure: 1. Casing; 2. Inner core; 3. Feed port; 4. Spiral channel; 5. Discharge channel; 6. Buffer chamber; 7. Electric heater; 8. Heat conduction plate; 9. Connecting rod; 10. Glass fiber insulation layer; 11. Filter; 12. Heating wire. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] See also Figure 1-5 , an extruder head for reducing energy consumption in PVC pipe production, including a casing 1, an inner core 2 and a feed port 3, a spiral channel 4 is formed between the casing 1 and the rear side of the inner core 2, a discharge channel 5 is formed between the casing 1 and the front side of the inner core 2, the middle portion of the inner core 2 is recessed inward and forms a buffer cavity 6 with the casing 1, and several groups of electric heaters 7 are installed on the outer surface of the casing 1, and the electric heater 7 is connected to a heat conducting plate 8 extending into the buffer cavity 6.

[0023] The rear side of the inner core 2 is a spiral structure and is close to the inner wall of the casing 1. The material flowing in from the feed port will spirally advance inside the spiral channel 4. After passing through the spiral channel 4, the material flows into the buffer chamber 6. The material passing through the buffer chamber 6 is squeezed out of the head from the discharge channel 5. Since the middle of the inner core 2 is concave inward, the space of the buffer chamber 6 is larger than the spiral channel 4 and the discharge channel 5, so that the flow rate of the material will slow down when passing through the buffer chamber 6. After the electric heater 7 is started, the heat conducting plate 8 extending into the buffer chamber 6 can generate heat, so that the material can be heated from the inside of the buffer chamber 6. Since the flow rate of the material in the buffer chamber 6 slows down, the material in the buffer chamber 6 can fully contact the surface of several groups of heat conducting plates 8, so that several groups of heat conducting plates 8 can more fully transfer heat to the material, effectively reducing the heat lost to the outside of the casing 1, and also making the material fully heated, while ensuring the processing temperature of the material in the head, it also reduces the energy consumption generated by heating the material.

[0024] For further information, see Figure 1-5 The inner core 2 is connected to the inner wall of the casing 1 through several groups of connecting rods 9.

[0025] Several groups of connecting rods 9 fix the inner core 2 in the housing 1 from multiple directions, so that the inner core 2 can be stably maintained in the middle position inside the housing 1.

[0026] For further information, see Figure 1-5 A glass fiber insulation layer 10 is provided in the outer wall of the casing 1.

[0027] The glass fiber insulation layer 10 has a good thermal insulation effect, which can further prevent the heat of the material inside the casing 1 from being lost to the outside, thereby further reducing production energy consumption.

[0028] For further information, see Figure 1-5 The heat conducting plate 8 is in a thin sheet structure and is arranged in the axial direction of the housing 1 .

[0029] The thin sheet-shaped heat conducting plate 8 is arranged axially toward the casing 1. During the flow of the material along the axis inside the casing 1, the thinner side of the heat conducting plate 8 is impacted by the material, so that the impact force on the heat conducting plate 8 is smaller. While ensuring the contact area between the heat conducting plate 8 and the material, the heat conducting plate 8 is not easily deformed by the impact of the material.

[0030] For further information, see Figure 1-5 A filter screen 11 is provided in the feed port 3 .

[0031] When the material enters the housing 1 from the feed port 3, the filter 11 is used to intercept impurities in the material, thereby ensuring the molding quality of the PVC pipe.

[0032] For further information, see Figure 1-5 The heat conducting plate 8 is made of glass ceramics, and a heating wire 12 is arranged inside the heat conducting plate 8 and is distributed in a bent state and electrically connected to the electric heater 7.

[0033] The glass ceramic heat conducting plate 8 has good thermal conductivity. The heating wire 12 distributed in a bent shape can heat the heat conducting plate 8 from the inside, so that the heat conducting plate 8 generates heat evenly. At the same time, the glass ceramic material is smooth, which reduces the resistance to material flow and avoids more production capacity consumption when extruding the material.

[0034] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An extruder head for reducing energy consumption in PVC pipe production, comprising a housing (1), an inner core (2) and a feed port (3), wherein a spiral channel (4) is formed between the housing (1) and the rear side of the inner core (2), and a discharge channel (5) is formed between the housing (1) and the front side of the inner core (2), characterized in that: The middle portion of the inner core (2) is recessed inwards and forms a buffer cavity (6) with the housing (1). A plurality of groups of electric heaters (7) are installed on the outer surface of the housing (1). The electric heaters (7) are connected to heat conducting plates (8) extending into the interior of the buffer cavity (6).

2. The extruder head for reducing energy consumption in PVC pipe production according to claim 1, characterized in that: The inner core (2) is connected to the inner wall of the casing (1) via a plurality of groups of connecting rods (9).

3. The extruder head for reducing energy consumption in PVC pipe production according to claim 1, characterized in that: A glass fiber heat insulation layer (10) is provided in the outer wall of the casing (1).

4. The extruder head for reducing energy consumption in PVC pipe production according to claim 1, characterized in that: The heat conducting plate (8) is in a thin sheet-like structure, and the heat conducting plate (8) is arranged in the axial direction of the housing (1).

5. The extruder head for reducing energy consumption in PVC pipe production according to claim 1, characterized in that: A filter screen (11) is provided in the feed port (3).

6. The extruder head for reducing energy consumption in PVC pipe production according to claim 1, characterized in that: The heat conducting plate (8) is made of glass ceramics, and a heating wire (12) distributed in a bent state is arranged inside the heat conducting plate (8).

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