High-energy-efficiency plastic pipe forming furnace

Abstract

The utility model discloses a high-energy-efficiency plastic pipe forming furnace which comprises a machine frame, a conveyor is installed on the top of the machine frame, a heating furnace and a cooling mechanism are arranged in the conveying direction of the conveyor, the cooling mechanism comprises a heat preservation box, and an inlet and an outlet are formed in the two ends of the heat preservation box respectively. The conveyor penetrates through an inlet and an outlet in the two ends of the heat preservation box respectively, air distribution pipes are evenly arranged in the heat preservation box, air outlets are evenly formed in pipe bodies of the air distribution pipes, the centers of the air distribution pipes are connected with air inlet pipes, one ends of the air inlet pipes are connected with vortex pipes, and cold air outlets of the vortex pipes are connected with the air inlet pipes. A hot air outlet of the vortex tube is communicated with the interior of the heating furnace body, an air inlet of the vortex tube is connected with a compressed air source, the air distribution tubes and the air inlet tube are integrally of a semicircular frame structure, the air outlets are evenly formed in the inner sides of air distribution tube bodies, and the multiple air distribution tubes are collinearly arranged and evenly distributed in the conveying direction of a conveyor.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic pipe processing, and in particular relates to a high-energy-efficiency plastic pipe forming furnace. Background Art

[0002] At present, the equipment for heating and shaping plastic pipes includes heating furnaces and full-automatic channel furnaces. These equipments are equipped with heating zones and cooling zones. The cooling zone generally uses cold water and fans to cool the thermoplastic pipes. For the molding furnace using cold water, although the cold water can cool down the hot mold quickly, when the impact of the cold water is strong, it will cause dents on the surface of the thermoplastic pipe, which is not beautiful and the product quality is not up to standard. If a fan is used, a single fan has a poor cooling effect on the thermoplastic pipe. The invention patent with patent number CN206623280U sets a pre-cooling mechanism and a main cooling mechanism in the cooling zone, so that the thermoplastic tube is cooled twice to completely cool the entire thermoplastic tube. The pre-cooling mechanism is a U-shaped nozzle rack for blowing air to cool the thermoplastic tube. The four nozzles on the nozzle rack are provided with a plurality of inward spray holes for pre-cooling. The main cooling mechanism also adopts a fan for cooling, but a cooling water pipe is provided in the air duct to blow out cold air. When the thermoplastic tube moves forward with the conveyor belt, it is sprayed with cold air to ensure the cooling effect. While the overall equipment is complicated, the air-cooling and water-cooling equipment causes the overall space to be large, the cooling temperature difference is small, and the plastic tube cannot be cooled in a short time. Therefore, the utility model proposes a high-efficiency plastic tube forming furnace, which has the advantages of being able to reduce the temperature in a short time and quickly cool the plastic tube, improve the cooling efficiency, and save a lot of energy costs.

[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency plastic pipe forming furnace, comprising a frame, a conveyor is installed on the top of the frame, a heating furnace and a cooling mechanism are respectively arranged along the conveying direction of the conveyor, the cooling mechanism comprises an insulation box, inlet and outlet are respectively opened at both ends of the insulation box, the conveyor passes through the inlet and outlet at both ends of the insulation box respectively, air distribution ducts are evenly arranged inside the insulation box, air distribution duct bodies are evenly arranged with air outlets, an air inlet duct is connected at the center of the air distribution duct, one end of the air inlet duct is connected to a vortex tube, the cold air outlet of the vortex tube is connected to the air inlet duct, the hot air outlet of the vortex tube is connected to the inside of the heating furnace, and the air inlet of the vortex tube is connected to a compressed air source.

[0005] As a preferred technical solution of the utility model, the air distribution duct and the air inlet duct are overall in a semicircular frame structure, and the air outlets are evenly arranged on the inner side of the air distribution duct body.

[0006] As a preferred technical solution of the present invention, a plurality of the air distribution ducts are arranged in a co-linear manner and are evenly distributed along the conveying direction of the conveyor.

[0007] As a preferred technical solution of the utility model, the conveyor is a chain plate conveyor, and the surface of the chain plate of the conveyor is a porous structure.

[0008] As a preferred technical solution of the utility model, the air distribution duct is fixed with an air nozzle at the air outlet.

[0009] As a preferred technical solution of the utility model, the inlets and outlets at both ends of the thermal insulation box are equipped with thermal insulation curtains.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model utilizes the principle of hot and cold flow separation by introducing compressed air into a vortex tube, and the cooled cold air is introduced into the heat preservation box of the cooling mechanism to cool the plastic pipe, so that it can be quickly cooled and formed. Compared with air cooling and water cooling, the utility model has a simple device with a small footprint and is easy to operate. It can quickly cool the plastic pipe by reducing the temperature in a short time, thereby improving the cooling efficiency. Only a small amount of electricity is needed to power the air compressor to achieve cooling. At the same time, the hot air flow blown out from the hot end of the vortex tube can also be introduced into the heating furnace to keep the furnace body temperature warm, thereby saving a lot of energy costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the heat preservation box in the utility model;

[0015] In the figure: 1. Frame; 2. Conveyor; 3. Heating furnace; 4. Insulation box; 5. Inlet and outlet; 6. Air distribution duct; 7. Air outlet; 8. Air inlet duct; 9. Vortex tube; 10. Air nozzle; 11. Insulation door curtain. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Example

[0018] See also Figure 1-2 The utility model provides the following technical solutions: a high-efficiency plastic pipe forming furnace, including a frame 1, a conveyor 2 is installed on the top of the frame 1, a heating furnace 3 and a cooling mechanism are respectively arranged along the conveying direction of the conveyor 2, the cooling mechanism includes an insulation box 4, and an inlet and outlet 5 are respectively opened at both ends of the insulation box 4. The conveyor 2 passes through the inlet and outlet 5 at both ends of the insulation box 4, and air distribution ducts 6 are evenly arranged inside the insulation box 4. The air distribution duct 6 is evenly arranged on the body of the air distribution duct 6. An air inlet duct 8 is connected to the center of the air distribution duct 6, and one end of the air inlet duct 8 is connected to a vortex tube 9, the cold air outlet of the vortex tube 9 is connected to the air inlet duct 8, the hot air outlet of the vortex tube 9 is connected to the furnace body of the heating furnace 3, and the air inlet of the vortex tube 9 is connected to a compressed air source.

[0019] In order to ensure uniform cooling of the plastic pipe, in this embodiment, as a preferred technical solution of the utility model, the air distribution duct 6 and the air inlet duct 8 are overall in a semicircular frame structure, and the air outlets 7 are evenly opened on the inner side of the air distribution duct 6. Multiple air distribution ducts 6 are arranged in a colinear manner and evenly distributed along the conveying direction of the conveyor 2.

[0020] In order to ensure that the portion of the pipe contacting the surface of the conveyor 2 can also be cooled quickly, in this embodiment, as a preferred technical solution of the utility model, the conveyor 2 is a chain conveyor, and the surface of the chain of the conveyor 2 is a porous structure.

[0021] In order to concentrate the cold air flow onto the surface of the plastic tube, in this embodiment, as a preferred technical solution of the utility model, a nozzle 10 is fixed on the air distribution duct 6 at the air outlet 7.

[0022] In order to keep the internal cold air warm, in this embodiment, as a preferred technical solution of the utility model, the inlet and outlet 5 at both ends of the insulation box 4 are installed with insulation curtains 11.

[0023] In summary, with the help of the above-mentioned technical scheme of the utility model, when in use, the pipe fittings pass through the heating furnace 3, enter the insulation box 4 from the inlet and outlet 5, and enter the vortex tube 9 by introducing compressed air into the air inlet pipe 8. When the compressed air enters the vortex tube 9 through the tangential inlet of the air inlet pipe 8, its pressure will drop rapidly due to the action of centrifugal force. This pressure drop causes a part of the gas to lose kinetic energy in the form of heat. Therefore, the outer layer of gas becomes colder than the inner core, and the hotter high-speed gas near the periphery is pressed toward the hot air outlet, while the inner layer of cold gas is ejected from the cold air outlet. The cold air flow ejected by the vortex tube 9 follows the air inlet pipe 8, enters the air distribution pipe 6, and is ejected through the air outlet 7 of the air distribution pipe 6 to cool the pipe fittings on the surface of the conveyor 2.

[0024] Finally, it should be noted that in the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0025] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-efficiency plastic pipe forming furnace, comprising a frame (1), a conveyor (2) is installed on the top of the frame (1), and a heating furnace (3) and a cooling mechanism are respectively arranged along the conveying direction of the conveyor (2), characterized in that: The cooling mechanism comprises a heat preservation box (4), the heat preservation box (4) is provided with an inlet and outlet (5) at both ends respectively, the conveyor (2) passes through the inlet and outlet (5) at both ends of the heat preservation box (4), the heat preservation box (4) is evenly provided with air distribution pipes (6), the air distribution pipes (6) are evenly provided with air outlets (7), the air distribution pipes (6) are connected to an air inlet pipe (8) at the center, one end of the air inlet pipe (8) is connected to a vortex tube (9), the cold air outlet of the vortex tube (9) is connected to the air inlet pipe (8), the hot air outlet of the vortex tube (9) is connected to the furnace body of the heating furnace (3), and the air inlet of the vortex tube (9) is connected to a compressed air source.

2. The high energy efficiency plastic pipe forming furnace according to claim 1, characterized in that: The air distribution pipe (6) and the air inlet pipe (8) are in a semicircular frame-shaped structure as a whole, and the air outlets (7) are evenly arranged on the inner side of the air distribution pipe (6).

3. The high energy efficiency plastic pipe forming furnace according to claim 2, characterized in that: The plurality of air distribution ducts (6) are arranged in a co-linear manner and are evenly distributed along the conveying direction of the conveyor (2).

4. The high energy efficiency plastic pipe forming furnace according to claim 3, characterized in that: The conveyor (2) is a chain plate conveyor, and the surface of the chain plate of the conveyor (2) is a porous structure.

5. The high energy efficiency plastic pipe forming furnace according to claim 1, characterized in that: The air distribution pipe (6) is fixed with an air nozzle (10) at the air outlet (7).

6. The high energy efficiency plastic pipe forming furnace according to claim 1, characterized in that: The inlets and outlets (5) at both ends of the thermal insulation box (4) are both equipped with thermal insulation curtains (11).

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