Plastic composite pipe reinforcing belt heating device capable of recycling heat energy
By constructing a hot air circulation loop and guide plate, the problems of low thermal energy utilization and increased ambient temperature in existing technologies have been solved, achieving efficient utilization of thermal energy and improved product quality, reducing production costs and improving the working environment.
Patent Information
- Application Number
- CN202520488394.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Existing hot air heating processes suffer from low thermal energy utilization, increased ambient temperature, and difficulty in detecting and adjusting heating temperature, resulting in high production costs, environmental degradation, and unstable product quality.
Design a heating device for plastic composite pipe reinforcement strip that reuses thermal energy. By constructing a hot air circulation loop, using a hot air guide plate and a return channel, the hot air is concentrated to heat the joint point between the reinforcement strip and the base pipe, and precise control is achieved through a temperature sensor.
It improves thermal energy utilization, reduces production costs, improves the working environment, enhances product quality and production efficiency, and increases the flexibility and adaptability of processes.
Smart Images
Figure CN223864373U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plastic pipe forming technology, specifically relating to a heating device for reinforcing plastic composite pipes that utilizes heat energy. Background Technology
[0002] In the production of plastic composite pipes, glass fiber or polyester filament is typically used as the reinforcing material. This is coated with polyethylene (PE) to form a strip-shaped reinforcement. The reinforcing strip is then spirally wound onto the surface of the base pipe at a preset winding angle and tension to strengthen the composite pipe structure. To ensure the bonding strength between the reinforcing strip and the base pipe, the joint points must be heat-fused during the winding process to ensure a tight bond between the reinforcing strip and the base pipe surface.
[0003] Currently, the industry generally adopts a hot air heating process, which involves continuously outputting high-temperature airflow at the joint point between the reinforcing strip and the base tube using a hot air gun. The heat from the hot air melts and bonds the surface material of the reinforcing strip and the base tube.
[0004] However, existing technologies have significant drawbacks: the hot air ejected from the hot air gun rapidly dissipates into the surrounding environment after contact with the joint, making it difficult to form a stable hot air field and lacking an effective recovery mechanism, which leads to the following problems:
[0005] 1. Serious energy waste: In order to maintain the effective welding temperature at the joint point, the hot air gun needs to operate at high power continuously. However, since the hot air cannot be recycled, the actual heat energy utilization rate is low, resulting in high production costs.
[0006] 2. Deterioration of working environment: Residual hot air diffused into the factory will significantly increase the ambient temperature, especially under continuous production conditions, the temperature in the working area will continue to rise, seriously affecting the health of operators and the stability of equipment;
[0007] 3. Difficulty in detecting and adjusting heating temperature: In an open environment, the flow of hot air is irregular, making it difficult to accurately detect and control the hot air temperature, and also difficult to control the temperature uniformity of different locations in the heating area. Utility Model Content
[0008] This utility model addresses the aforementioned problems in the existing technology by proposing a heating device for a plastic composite pipe reinforced with heat energy reuse.
[0009] This utility model can be achieved through the following technical solutions:
[0010] A heating device for heat energy recycling using a plastic composite pipe reinforced with a heating element, comprising:
[0011] A rotating body having a central through-hole for the base tube to pass through;
[0012] A reinforcing belt guide wheel is provided on the rotating body and is used to transport the reinforcing belt to the surface of the base tube. As the base tube is transported in a straight line and the rotating body rotates, the reinforcing belt is spirally wound around the surface of the base tube at a preset winding angle.
[0013] The hot air source has its outlet facing the junction of the reinforcing belt and the base pipe to output hot air;
[0014] A hot air guide plate is disposed at the outlet end of the hot air source. The hot air guide plate is spaced apart from the reinforcing belt and the base pipe to form a hot air return channel.
[0015] The hot air return channel is connected to the air inlet of the hot air source through a return pipe to form a hot air circulation loop. The hot air output from the hot air source heats the junction of the base tube and the reinforcing strip, and then returns to the hot air source through the hot air return channel and the return pipe. During the return process, the surface of the reinforcing strip and the base tube is preheated.
[0016] As a further improvement of this utility model, multiple reinforcing belt guide wheels are evenly arranged on the rotating body and respectively transport the reinforcing belt to the surface of the base pipe. The number of hot air sources is the same as that of the reinforcing belt guide wheels and they are arranged adjacent to each other.
[0017] As a further improvement of this utility model, the reinforcing belt and the base tube form an angle at their joint point, and the air outlet of the hot air source is located on the side of the angle formed by the two.
[0018] As a further improvement of this utility model, the hot air source includes an air pump and a hot air gun, the air outlet of the air pump is connected to the hot air gun, and the hot air guide plate is disposed at the air outlet of the hot air gun.
[0019] As a further improvement of this utility model, the air outlet of the air pump is connected to the air inlet of the hot air return channel through the hot air gun, and the air outlet of the hot air return channel is connected to the air inlet of the air pump through the return pipe.
[0020] As a further improvement of this utility model, the hot air guide plate includes a conveying guide section, a reinforcing belt return guide section, and a base pipe return guide section. The conveying guide section is bent to both sides and then connected to the reinforcing belt return guide section and the base pipe return guide section through arc-shaped transition surfaces.
[0021] As a further improvement of this utility model, the conveying guide section is positioned towards the junction point of the reinforcing belt and the base pipe.
[0022] As a further improvement of this utility model, the reinforcing belt return guide section is arranged parallel to the reinforcing belt, and the base pipe return guide section extends along the surface of the base pipe and its curvature matches that of the base pipe.
[0023] As a further improvement of this utility model, the hot air guide plate is composed of a base plate and two symmetrically arranged side plates. The base plate and the side plates, as well as the side plates and the reinforcing belt or base pipe, together enclose and form the hot air return channel.
[0024] As a further improvement of this utility model, a temperature sensor is provided on the hot air guide plate. The temperature sensor is electrically connected to the control module of the hot air gun. The real-time temperature of the air outlet of the hot air gun is detected by the temperature sensor and fed back to the control module to adjust the heating temperature of the hot air gun.
[0025] Compared with the prior art, the present invention has the following beneficial effects:
[0026] 1. Improve thermal energy utilization: By constructing a hot air circulation loop, the hot air is recycled, which greatly improves the efficiency of thermal energy use, reduces energy consumption, and thus reduces production costs;
[0027] 2. Preheating of base pipe and reinforcing strip: After the hot air heats the joint point of the base pipe and reinforcing strip, it returns along the hot air return channel. During this process, the residual heat of the hot air is used to preheat the base pipe and reinforcing strip, which further improves the overall energy utilization efficiency and production efficiency of the system.
[0028] 3. Improved working environment: Since most of the hot air is effectively recovered and reused, the waste heat diffused into the factory is greatly reduced, thereby alleviating the problem of rising working area temperature caused by continuous production, protecting the health of operators and enhancing the stability of equipment.
[0029] 4. Improve product quality: Precise control of the direction and temperature of hot air ensures optimal welding conditions between the reinforcing strip and the base tube, thereby improving the quality of the final product;
[0030] 5. Flexibility and adaptability: The system is designed to allow for adjustments to hot air parameters according to different production process requirements, increasing the flexibility and adaptability of the process flow. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the structure of the heating device for the heat energy reuse of the plastic composite pipe with reinforced belt of this utility model;
[0032] Figure 2 This is a schematic diagram of the structure of the hot air circulation loop constructed between a single hot air source and the base pipe of this utility model;
[0033] Figure 3 This is a schematic diagram of the structure of the reinforcing strip and the base tube winding of this utility model.
[0034] In the diagram, 100 is the rotating body; 110 is the reinforcing belt guide wheel; 111 is the reinforcing belt; 120 is the air pump; 130 is the hot air gun; 140 is the hot air guide plate; 141 is the conveying guide section; 142 is the reinforcing belt return guide section; 143 is the base pipe return guide section; 150 is the hot air return channel; 160 is the return pipeline; 170 is the temperature sensor; and 200 is the base pipe. Detailed Implementation
[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.
[0036] like Figures 1-3 As shown, this utility model provides a heating device for a plastic composite pipe reinforced with heat energy reuse, comprising:
[0037] The rotating body 100 has a central through hole through which the base tube 200 passes;
[0038] The reinforcing belt guide wheel 110 is disposed on the rotating body 100 and is used to convey the reinforcing belt 111 to the surface of the base tube 200. As the base tube 200 is conveyed linearly and the rotating body 100 rotates, the reinforcing belt 111 is spirally wound on the surface of the base tube 200 at a preset winding angle.
[0039] The hot air source has its outlet precisely oriented towards the joint point between the reinforcing strip 111 and the base tube 200, outputting a high-temperature airflow to provide the necessary heat for the welding between the reinforcing strip 111 and the base tube 200, thereby ensuring that the two are firmly bonded to form a composite tube.
[0040] A hot air guide plate 140 is disposed at the outlet end of the hot air source. The hot air guide plate 140, the reinforcing belt 111, and the base pipe 200 are spaced apart to form a hot air return channel 150. This design ensures that the hot air can be concentrated on the target area.
[0041] The hot air return channel 150 is connected to the air inlet of the hot air source through the return pipe 160 to form a hot air circulation loop. This means that after the hot air generated by the hot air source effectively heats the base tube 200 and the reinforcing belt 111, it can return to the hot air source through the hot air return channel 150 and the return pipe 160 to realize the recycling of heat energy, and preheat the surface of the reinforcing belt 111 and the base tube 200 during the return process.
[0042] It should be noted that in the hot air heating process commonly used in the industry, the hot air sprayed by the hot air gun 130 quickly dissipates into the surrounding environment after contacting the joint point, lacking an effective recovery mechanism. This causes the hot air gun 130 to operate at high power continuously to maintain the required welding temperature at the joint point, and also causes the ambient temperature to rise continuously due to heat diffusion, which affects the health of the operators.
[0043] In contrast, this embodiment, through the design of a hot air circulation loop, not only solves the aforementioned problems but also brings at least the following beneficial effects:
[0044] 1. Improve thermal energy utilization: By constructing a hot air circulation loop, the hot air is recycled, which greatly improves the efficiency of thermal energy use, reduces energy consumption, and thus reduces production costs;
[0045] 2. Preheating of base tube 200 and reinforcing strip 111: After the hot air heats the joint of the base tube 200 and the reinforcing strip 111, it returns along the hot air return channel 150. During this process, the residual heat of the hot air is used to preheat the base tube 200 and the reinforcing strip 111, which further improves the overall energy utilization efficiency and production efficiency of the system.
[0046] 3. Improved working environment: Since most of the hot air is effectively recovered and reused, the waste heat diffused into the factory is greatly reduced, thereby alleviating the problem of rising working area temperature caused by continuous production, protecting the health of operators and enhancing the stability of equipment.
[0047] 4. Improve product quality: Precise control of the direction and temperature of hot air ensures optimal welding conditions between the reinforcing strip 111 and the base tube 200, thereby improving the quality of the final product;
[0048] 5. Flexibility and adaptability: The system is designed to allow for adjustments to hot air parameters according to different production process requirements, increasing the flexibility and adaptability of the process flow.
[0049] Preferably, multiple reinforcing belt guide wheels 110 are evenly arranged on the rotating body 100 and respectively transport reinforcing belts 111 to the surface of the base tube 200. At the same time, the number of hot air sources matches the number of reinforcing belt guide wheels 110, and each hot air source is arranged close to the corresponding reinforcing belt guide wheel 110 to ensure that the joint point between each reinforcing belt 111 and the base tube 200 can be accurately heated.
[0050] By configuring the reinforcing belt guide wheel 110 and the hot air source one-to-one, the heating parameters (such as temperature, airflow speed, etc.) at each joint point between the reinforcing belt 111 and the base pipe 200 can be controlled more effectively, achieving efficient use of energy, reducing unnecessary energy loss, and ensuring that the welding temperature between each reinforcing belt 111 and the base pipe 200 is uniform, avoiding differences in bonding strength caused by uneven heating, and improving the overall quality of the composite pipe.
[0051] In addition, the design of multiple reinforcing belt guide wheels 110 and multiple hot air sources allows for the simultaneous winding and heating of reinforcing belt 111 at multiple locations, which greatly improves production efficiency. The number of reinforcing belt guide wheels 110 and hot air sources can also be adjusted according to different production needs to adapt to the production of composite pipes of different specifications or types, increasing the flexibility and adaptability of the process.
[0052] Preferably, the reinforcing strip 111 and the base tube 200 form an angle at their joint point, and the outlet of the hot air source is located on the side of the angle formed by the two. By arranging the outlet of the hot air source on one side of the angle formed by the reinforcing strip 111 and the base tube 200, the hot air can be concentrated on the joint that needs to be heated, which improves the heat transfer efficiency and ensures that the reinforcing strip 111 and the base tube 200 can reach the ideal welding temperature in a short time.
[0053] Preferably, the hot air source includes an air pump 120 and a hot air gun 130, wherein the air outlet of the air pump 120 is connected to the hot air gun 130 to provide the necessary airflow, and the hot air guide plate 140 is provided at the air outlet of the hot air gun 130 to guide the hot air to accurately reach the joint point between the reinforcing belt 111 and the base tube 200, and to form an effective hot air return channel 150.
[0054] By setting the hot air guide plate 140 at the air outlet of the hot air gun 130, the direction and coverage of the hot air can be precisely controlled, ensuring that the heat can be concentrated on the joint between the reinforcing strip 111 and the base tube 200, thereby improving the welding quality and efficiency.
[0055] In addition, the design of the hot air guide plate 140 not only helps guide the hot air flow to the target area, but also helps to build a hot air return channel 150, so that the used hot air can be returned to the hot air source system composed of the air pump 120 and the hot air gun 130 through the return pipe 160 for recycling, which greatly improves the utilization rate of thermal energy.
[0056] Specifically, the air outlet of the air pump 120 is connected to the air inlet of the hot air return channel 150 through the hot air gun 130, so that the heated air can be directly guided to the joint point of the reinforcing belt 111 and the base tube 200. After the heating task is completed, the hot air passes through the hot air return channel 150 formed by the hot air guide plate 140 and finally returns to the air inlet of the air pump 120 through the return pipe 160, forming a closed hot air circulation system.
[0057] Furthermore, the hot air guide plate 140 includes a conveying guide section 141, a reinforcing belt return guide section 142, and a base pipe return guide section 143. The conveying guide section 141 is bent to both sides and then connected to the reinforcing belt return guide section 142 and the base pipe return guide section 143 respectively through arc-shaped transition surfaces.
[0058] Conveyor guide section 141: This section is positioned towards the junction of the reinforcing belt 111 and the base pipe 200 to ensure that hot air can act directly and centrally on the area that needs to be heated. In order to achieve optimal hot air coverage, the conveyor guide section 141 is bent on both sides and smoothly connected to the other two guide sections through an arc transition surface.
[0059] Enhanced belt return guide section 142: This part is set parallel to the enhanced belt 111 and surrounds the enhanced belt 111 to form a hot air return channel 150. Its purpose is to guide the hot air that has completed the heating task to flow along the direction of the enhanced belt 111 so as to effectively recover it to the air pump 120.
[0060] Base tube return guide section 143: This section extends along the surface of the base tube 200, and its curvature matches the outer diameter of the base tube 200 and surrounds the base tube 200 to form a hot air return channel 150, ensuring that the hot air can smoothly enter the return channel after contacting the surface of the base tube 200.
[0061] The precisely designed guide section ensures that the hot air first acts efficiently on the joint between the reinforcing strip 111 and the base tube 200, and then is recovered along the preset path, maximizing the efficiency of heat energy use, and preheating the surfaces of the reinforcing strip 111 and the base tube 200 in the recovery path.
[0062] Furthermore, because the design of the hot air guide plate 140 takes into account the specific shape and position of the reinforcing belt 111 and the base tube 200, the heating process is more uniform, avoiding the problem of local overheating or insufficient heating, thus improving the quality of the composite tube.
[0063] Preferably, the hot air guide plate 140 consists of a base plate and two symmetrically arranged side plates. The base plate and the two side plates together form a semi-closed channel. This semi-closed channel, together with the reinforcing belt 111 and the base pipe 200, forms a hot air return channel 150, which can effectively manage and guide the hot air flow, ensure the maximum utilization of heat, and reduce energy waste.
[0064] Preferably, a temperature sensor 170 (e.g., a thermocouple) is provided on the hot air guide plate 140. The temperature sensor 170 is electrically connected to the control module of the hot air gun 130. The temperature sensor 170 can monitor the temperature of the air outlet of the hot air gun 130 in real time and feed this data back to the control module. Based on this feedback information, the control module can dynamically adjust the heating temperature of the hot air gun 130 to ensure that the temperature at the joint point between the reinforcing strip 111 and the base tube 200 is always within the optimal welding range.
[0065] By monitoring and adjusting the temperature at the hot air outlet in real time, precise control of the temperature at the joint point can be achieved, ensuring the welding quality between the reinforcing strip 111 and the base tube 200 and reducing product defects caused by inaccurate temperature.
[0066] In addition, the intelligent temperature control system can adjust the power of the hot air gun 130 according to actual needs, avoiding unnecessary energy consumption and reducing operating costs.
[0067] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
[0068] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0069] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0070] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.
[0071] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A heating device for a plastic composite pipe reinforced with heat energy recycling, characterized in that, include: A rotating body having a central through-hole for the base tube to pass through; A reinforcing belt guide wheel is provided on the rotating body and is used to transport the reinforcing belt to the surface of the base tube. As the base tube is transported in a straight line and the rotating body rotates, the reinforcing belt is spirally wound around the surface of the base tube at a preset winding angle. The hot air source has its outlet facing the junction of the reinforcing belt and the base pipe to output hot air; A hot air guide plate is disposed at the outlet end of the hot air source. The hot air guide plate is spaced apart from the reinforcing belt and the base pipe to form a hot air return channel. The hot air return channel is connected to the air inlet of the hot air source through a return pipe to form a hot air circulation loop. The hot air output from the hot air source heats the joint between the heating base tube and the reinforcing strip, and then returns to the hot air source through the hot air return channel and the return pipe. During the return process, the surface of the reinforcing strip and the base tube is preheated.
2. The heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 1, is characterized in that... The reinforcing belt guide wheels are evenly arranged in multiples on the rotating body and respectively transport the reinforcing belt to the surface of the base pipe. The number of hot air sources is the same as that of the reinforcing belt guide wheels and they are arranged adjacent to each other.
3. The heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 1, is characterized in that... The reinforcing belt and the base pipe form an angle at their joint point, and the air outlet of the hot air source is located on the side of the angle formed by the two.
4. The heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 1, is characterized in that... The hot air source includes an air pump and a hot air gun. The air outlet of the air pump is connected to the hot air gun, and the hot air guide plate is disposed at the air outlet of the hot air gun.
5. A heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 4, is characterized in that... The air outlet of the air pump is connected to the air inlet of the hot air return channel through the hot air gun, and the air outlet of the hot air return channel is connected to the air inlet of the air pump through the return pipe.
6. The heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 1, is characterized in that... The hot air guide plate includes a conveying guide section, a reinforcing belt return guide section, and a base pipe return guide section. The conveying guide section is bent to both sides and then connected to the reinforcing belt return guide section and the base pipe return guide section through arc-shaped transition surfaces.
7. A heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 6, is characterized in that... The conveying guide section is positioned towards the junction of the reinforcing belt and the base pipe.
8. A heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 7, is characterized in that... The reinforcing strip return guide section is arranged parallel to the reinforcing strip, and the base pipe return guide section extends along the surface of the base pipe and its curvature matches that of the base pipe.
9. A heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 1, is characterized in that... The hot air guide plate consists of a base plate and two symmetrically arranged side plates. The base plate and the side plates, as well as the side plates and the reinforcing belt or base pipe, together enclose the hot air return channel.
10. A heating device for heat energy reuse in a plastic composite pipe with reinforced strip, as described in claim 4, is characterized in that... A temperature sensor is provided on the hot air guide plate. The temperature sensor is electrically connected to the control module of the hot air gun. The temperature sensor detects the real-time temperature of the air outlet of the hot air gun and feeds it back to the control module to adjust the heating temperature of the hot air gun.