Plastic composite pipe reinforcing belt heating device capable of recycling heat energy

Abstract

The invention discloses a plastic composite pipe reinforcing band heating device capable of recycling heat energy, and belongs to the technical field of plastic pipe forming. Comprising a rotary body provided with a central through hole for a base tube to pass through; the reinforcing belt guide wheel is arranged on the rotary body and is used for conveying the reinforcing belt to the surface of the base pipe; the air outlet end of the hot air source faces the joint point of the reinforcing belt and the base pipe so as to output hot air; the hot air guide plate is arranged at the air outlet end of the hot air source, the hot air guide plate, the reinforcing belt and the base pipe are arranged at intervals to form a hot air backflow channel, and the hot air backflow channel communicates with the air inlet end of the hot air source through a backflow pipeline to form a hot air circulation loop; and hot air output by the hot air source is recovered to the hot air source through the hot air backflow channel and the backflow pipeline after being at the joint point of the heating base pipe and the reinforcing belt. By constructing the hot air circulation loop, cyclic utilization of hot air is achieved, the use efficiency of heat energy is greatly improved, energy consumption is reduced, and then the production cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic pipe molding, and in particular relates to a plastic composite pipe reinforcement belt heating device for recycling heat energy. Background Art

[0002] In the production process of plastic composite pipes, glass fiber or polyester filament is usually used as the reinforcing material, which is coated with polyethylene (PE) to make a belt-shaped reinforcement body. The reinforcing belt is spirally wound on the surface of the base pipe at a preset winding angle and winding tension to achieve structural reinforcement of the composite pipe. In order to ensure the bonding strength between the reinforcing belt and the base pipe, the joints of the two need to be hot-melt treated during the winding process so that the reinforcing belt and the surface of the base pipe are fused and bonded.

[0003] At present, the industry generally adopts the hot air heating process, which is specifically: aiming the hot air gun at the joining point of the reinforcement belt and the base pipe to continuously output high-temperature airflow, and using the heat of the hot air to melt and bond the reinforcement belt and the surface material of the base pipe.

[0004] However, the existing technology has significant defects: the hot air sprayed by the hot air gun quickly dissipates into the surrounding environment after contacting the joint point, making it difficult to form a stable hot air field, and lacks an effective recovery mechanism, which leads to the following problems:

[0005] 1. Serious energy waste: In order to maintain the effective welding temperature of the joint point, the hot air gun needs to continue to operate at high power, but because the hot air cannot be recycled, the actual thermal energy utilization rate is low, resulting in high production costs;

[0006] 2. Deterioration of the working environment: The residual hot air diffused into the factory will significantly increase the ambient temperature. Especially under continuous production conditions, the temperature of the working area continues to rise, seriously affecting the health of operators and the stability of equipment;

[0007] 3. Difficulty in detecting and adjusting the 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 it is also difficult to control the temperature uniformity at different locations in the heating area. Summary of the invention

[0008] The present invention aims at the above problems existing in the prior art and proposes a plastic composite pipe reinforcement belt heating device for recycling heat energy.

[0009] The present invention can be achieved through the following technical solutions:

[0010] A plastic composite pipe reinforcement belt heating device for heat energy recycling, comprising:

[0011] A rotating body having a central through hole for the substrate pipe to pass through;

[0012] A reinforcing belt guide wheel is arranged on the rotating body and is used to convey the reinforcing belt to the surface of the base pipe. With the linear conveyance of the base pipe and the rotation of the rotating body, the reinforcing belt is spirally wound on the surface of the base pipe at a preset winding angle;

[0013] A hot air source, whose air outlet end is directed toward the joint point between the reinforcement belt and the base pipe to output hot air;

[0014] A hot air guide plate is arranged at the air outlet of the hot air source, and the hot air guide plate is arranged at intervals between the reinforcing belt and the base tube to form a hot air return channel, wherein:

[0015] The hot air reflow channel is connected to the air inlet end of the hot air source through a reflow pipeline to form a hot air circulation loop, so that the hot air output by the hot air source heats the junction point between the base tube and the reinforcement belt, and then flows back to the hot air source through the hot air reflow channel and the reflow pipeline, and preheats the reinforcement belt and the base tube surface during the reflow process.

[0016] As a further improvement of the present invention, a plurality of 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 the 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 the present invention, the reinforcement belt and the base pipe form an angle at the joining point between the two, and the air outlet end of the hot air source is located on the side where the angle formed by the two is located.

[0018] As a further improvement of the present invention, the hot air source includes an air pump and a hot air gun, the air outlet end of the air pump is connected to the hot air gun, and the hot air guide plate is arranged at the air outlet end of the hot air gun.

[0019] As a further improvement of the present invention, the air outlet end of the air pump is connected to the air inlet end of the hot air reflux channel through the hot air gun, and the air outlet end of the hot air reflux channel is connected to the air inlet end of the air pump through the reflux pipeline.

[0020] As a further improvement of the present invention, the hot air guide plate includes a conveying guide section, a reinforcement belt reflux guide section, and a base tube reflux guide section. The conveying guide section is bent to both sides and connected to the reinforcement belt reflux guide section and the base tube reflux guide section through arc-shaped transition surfaces.

[0021] As a further improvement of the present invention, the conveying guide section is arranged toward the joining point between the reinforcement belt and the base pipe.

[0022] As a further improvement of the present invention, the reinforcing belt reflux guide section is arranged in parallel with the reinforcing belt, and the base pipe reflux guide section extends along the base pipe surface and has a curvature matching that of the base pipe.

[0023] As a further improvement of the present invention, the hot air guide plate is composed of a bottom plate and two symmetrically arranged side plates, and the bottom plate and the side plates, as well as the side plates and the reinforcing belt or base tube, together enclose the hot air reflux channel.

[0024] As a further improvement of the present invention, a temperature sensor is provided on the hot air guide plate, and 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 end of the hot air gun and feeds 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 the utilization rate of thermal energy: By constructing a hot air circulation loop, the recycling of hot air is realized, which greatly improves the utilization efficiency of thermal energy, reduces energy consumption, and thus reduces production costs;

[0027] 2. Preheating of base tube and reinforcement belt: After the hot air heats the joint of base tube and reinforcement belt, the base tube and reinforcement belt are preheated by the waste heat of the hot air during the process of reflux along the hot air reflux channel, which further improves the overall energy utilization efficiency and production efficiency of the system;

[0028] 3. Improve the 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 temperature increase in the working area caused by continuous production, protecting the health of operators and enhancing the stability of equipment;

[0029] 4. Improve product quality: Accurately control the direction and temperature of hot air to ensure the best welding conditions between the reinforcement belt and the base pipe, and improve the quality of the final product;

[0030] 5. Flexibility and adaptability: The design of the system allows the hot air parameters to be adjusted according to different production process requirements, increasing the flexibility and adaptability of the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the plastic composite pipe reinforcement belt heating device for heat energy recycling of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of constructing a hot air circulation loop between a single hot air source and a base pipe of the present invention;

[0033] Figure 3 It is a schematic structural diagram of the winding point of the reinforcement belt and the base pipe of the present invention.

[0034] In the figure, 100, rotating body; 110, reinforcing belt guide wheel; 111, reinforcing belt; 120, air pump; 130, hot air gun; 140, hot air guide plate; 141, conveying guide section; 142, reinforcing belt reflux guide section; 143, base tube reflux guide section; 150, hot air reflux channel; 160, reflux pipeline; 170, temperature sensor; 200, base tube. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

[0036] like Figure 1-Figure 3 As shown, the present invention provides a plastic composite pipe reinforcement belt heating device for heat energy recycling, comprising:

[0037] The rotating body 100 has a central through hole for the base pipe 200 to pass through;

[0038] The reinforcing belt guide wheel 110 is arranged on the rotating body 100 and is used to convey the reinforcing belt 111 to the surface of the base pipe 200. With the linear conveyance of the base pipe 200 and the rotation of the rotating body 100, the reinforcing belt 111 is spirally wound on the surface of the base pipe 200 at a preset winding angle;

[0039] The hot air source, whose air outlet is precisely directed toward the joint point between the reinforcement belt 111 and the base pipe 200, outputs high-temperature airflow to provide necessary heat for the welding between the reinforcement belt 111 and the base pipe 200, thereby ensuring that the two are firmly bonded to form a composite pipe;

[0040] The hot air guide plate 140 is arranged at the outlet of the hot air source. The hot air guide plate 140 is spaced apart from the reinforcement belt 111 and the base tube 200 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 reflux channel 150 is connected to the air inlet end of the hot air source through the reflux 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 reinforcement belt 111, it can flow back to the hot air source through the hot air reflux channel 150 and the reflux pipe 160, thereby realizing the recycling of heat energy and preheating the surface of the reinforcement belt 111 and the base tube 200 during the reflux process.

[0042] It should be noted that in the hot air heating process currently commonly used in the industry, the hot air sprayed by the hot air gun 130 quickly dissipates into the surrounding environment after contacting the joining point, and there is a lack of an effective recovery mechanism, which causes the hot air gun 130 to continue to operate at high power to maintain the required welding temperature of the joining point. It also causes the ambient temperature to continue to rise due to heat diffusion, which affects the personal health of the operator.

[0043] In comparison, the hot air circulation loop in this embodiment not only solves the above problems, but also brings at least the following beneficial effects:

[0044] 1. Improve the utilization rate of thermal energy: By constructing a hot air circulation loop, the recycling of hot air is realized, which greatly improves the utilization efficiency of thermal energy, reduces energy consumption, and thus reduces production costs;

[0045] 2. Preheating the base tube 200 and the reinforcement belt 111: After the hot air heats the joint of the base tube 200 and the reinforcement belt 111, the base tube 200 and the reinforcement belt 111 are preheated by utilizing the residual heat of the hot air during the process of reflowing along the hot air reflow channel 150, thereby further improving the overall energy utilization efficiency and production efficiency of the system;

[0046] 3. Improve the 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 temperature increase in the working area caused by continuous production, protecting the health of operators and enhancing the stability of equipment;

[0047] 4. Improve product quality: Precisely control the direction and temperature of the hot air to ensure the best welding conditions between the reinforcement belt 111 and the base pipe 200, and improve the quality of the final product;

[0048] 5. Flexibility and adaptability: The design of the system allows the hot air parameters to be adjusted according to different production process requirements, increasing the flexibility and adaptability of the process.

[0049] Preferably, a plurality of reinforcing belt guide wheels 110 are evenly arranged on the rotating body 100 and respectively convey the reinforcing belt 111 to the surface of the base pipe 200. At the same time, the number of hot air sources matches the reinforcing belt guide wheels 110, and each hot air source is arranged close to the corresponding reinforcing belt guide wheel 110, ensuring that the joint point between each reinforcing belt 111 and the base pipe 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, air flow velocity, etc.) at each joining point of the reinforcing belt 111 and the base pipe 200 can be more effectively controlled, so as to achieve efficient use of energy and reduce unnecessary energy loss. It can also ensure that the welding temperature between each reinforcing belt 111 and the base pipe 200 is uniform, thus avoiding the difference in bonding strength caused by uneven heating and improving the overall quality of the composite pipe.

[0051] In addition, the design of multiple reinforcement belt guide wheels 110 and multiple hot air sources allows the winding and heating operations of the reinforcement belt 111 to be performed at multiple positions at the same time, which greatly improves the production efficiency. The number of reinforcement 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, thereby increasing the flexibility and adaptability of the process.

[0052] Preferably, the reinforcement band 111 and the base tube 200 form an angle at the joining point, and the air outlet end of the hot air source is located on the side of the angle formed by the two. By arranging the air outlet end of the hot air source on one side of the angle formed by the reinforcement band 111 and the base tube 200, the hot air can be concentrated on the joining part that needs to be heated, thereby improving the heat transfer efficiency and ensuring that the reinforcement band 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 end of the air pump 120 is connected to the hot air gun 130 to provide necessary airflow, and the hot air guide plate 140 is arranged at the air outlet end of the hot air gun 130 to guide the hot air to accurately reach the joint point of the reinforcement belt 111 and the base pipe 200, and form an effective hot air return channel 150;

[0054] By arranging the hot air guide plate 140 at the air outlet end of the hot air gun 130, the direction and coverage of the hot air can be accurately controlled, ensuring that the heat can be concentrated on the joint between the reinforcement belt 111 and the base pipe 200, thereby improving the welding quality and efficiency;

[0055] In addition, the design of the hot air guide plate 140 not only helps to guide the hot air to the target area, but also helps to construct 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 end of the air pump 120 is connected to the air inlet end of the hot air reflow channel 150 through the hot air gun 130, so that the heated air can be directly guided to the junction of the reinforcement belt 111 and the base tube 200. After completing the heating task, the hot air passes through the hot air reflow channel 150 formed by the hot air guide plate 140, and finally returns to the air inlet end of the air pump 120 via the reflow 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 tube return guide section 143. The conveying guide section 141 is bent to both sides and connected to the reinforcing belt return guide section 142 and the base tube return guide section 143 through arc-shaped transition surfaces, wherein:

[0058] Conveying guide section 141: This section is arranged toward the junction point between the reinforcing belt 111 and the base pipe 200, ensuring that the hot air can directly and concentratedly act on the area that needs to be heated. In order to achieve the best hot air coverage, the conveying guide section 141 is bent on both sides and smoothly connected to the other two guide sections through an arc transition surface;

[0059] Reinforcement belt return guide section 142: This section is arranged in parallel with the reinforcement belt 111 and encloses the reinforcement belt 111 to form a hot air return channel 150, the purpose of which is to guide the hot air that has completed the heating task to flow along the direction of the reinforcement belt 111 so as to be effectively recovered to the air pump 120;

[0060] Base tube return guide section 143: This section extends along the surface of the base tube 200, has a curvature matching the outer diameter of the base tube 200 and is combined with 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] Through the precisely designed guide section, it can be ensured that the hot air first acts efficiently on the joint between the reinforcement tape 111 and the base tube 200, and then is recovered according to the preset path, maximizing the use efficiency of heat energy, and preheating the surface of the reinforcement tape 111 and the base tube 200 is achieved in the recovery path;

[0062] Furthermore, since the design of the hot air guide plate 140 takes into account the specific shapes and positions of the reinforcement band 111 and the base pipe 200, the heating process is more uniform, thus avoiding the problems of local overheating or insufficient heating and improving the quality of the composite pipe.

[0063] Preferably, the hot air guide plate 140 is composed of a bottom plate and two symmetrically arranged side plates, which together enclose a semi-enclosed channel, and the semi-enclosed channel is finally combined with the reinforcement belt 111 and the base pipe 200 to form a hot air return channel 150, which can effectively manage and guide the flow of hot air, ensure maximum utilization of heat, and reduce energy waste.

[0064] Preferably, a temperature sensor 170 (such as a thermocouple) is provided on the hot air guide plate 140, and 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 back these data to the control module. Based on these feedback information, the control module can dynamically adjust the heating temperature of the hot air gun 130 to ensure that the temperature at the junction of the reinforcement belt 111 and the base pipe 200 is always within the optimal welding range;

[0065] By real-time monitoring and adjusting the temperature of the hot air outlet, the temperature of the joint point can be accurately controlled, thereby ensuring the welding quality between the reinforcement band 111 and the base pipe 200 and reducing product defects caused by inaccurate temperature.

[0066] In addition, the intelligent temperature control system can adjust the power of the heat gun 130 according to actual needs, thereby avoiding unnecessary energy consumption and reducing operating costs.

[0067] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical schemes composed of any combination of the above technical features. The above is a specific implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

[0068] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0069] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0070] The technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0071] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A plastic composite pipe reinforcement belt heating device for heat energy recycling, characterized in that: include: A rotating body having a central through hole for the substrate pipe to pass through; A reinforcing belt guide wheel is arranged on the rotating body and is used to convey the reinforcing belt to the surface of the base pipe. With the linear conveyance of the base pipe and the rotation of the rotating body, the reinforcing belt is spirally wound on the surface of the base pipe at a preset winding angle; A hot air source, whose air outlet end is directed toward the joint point between the reinforcement belt and the base pipe to output hot air; A hot air guide plate is arranged at the air outlet of the hot air source, and the hot air guide plate is arranged at intervals between the reinforcing belt and the base tube to form a hot air return channel, wherein: The hot air reflow channel is connected to the air inlet end of the hot air source through a reflow pipeline to form a hot air circulation loop, so that the hot air output by the hot air source heats the junction point between the heating base tube and the reinforcement belt, and then flows back to the hot air source through the hot air reflow channel and the reflow pipeline, and preheats the reinforcement belt and the base tube surface during the reflow process.

2. The plastic composite pipe reinforcement belt heating device for heat energy recycling according to claim 1 is characterized in that: A plurality of the 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 the hot air sources is the same as that of the reinforcing belt guide wheels and they are arranged adjacent to each other.

3. The plastic composite pipe reinforcement belt heating device for heat energy recycling according to claim 1 is characterized in that: The reinforcing belt and the base pipe form an angle at the joining point between the two, and the air outlet end of the hot air source is located on the side where the angle formed by the two is located.

4. The device for heating a plastic composite pipe reinforcement strip for heat energy recycling according to claim 1, characterized in that: The hot air source comprises an air pump and a hot air gun, the air outlet end of the air pump is connected to the hot air gun, and the hot air guide plate is arranged at the air outlet end of the hot air gun.

5. The device for heating a plastic composite pipe reinforcement strip for heat energy recycling according to claim 4, characterized in that: The air outlet end of the air pump is communicated with the air inlet end of the hot air reflux channel through the hot air gun, and the air outlet end of the hot air reflux channel is communicated with the air inlet end of the air pump through the reflux pipeline.

6. The device for heating a plastic composite pipe reinforcement strip for heat energy recycling according to claim 1, characterized in that: The hot air guide plate includes a conveying guide section, a reinforcing belt return guide section, and a base tube return guide section. The conveying guide section is bent to both sides and connected to the reinforcing belt return guide section and the base tube return guide section through arc transition surfaces.

7. The device for heating a plastic composite pipe reinforcement strip for heat energy recycling according to claim 6, characterized in that: The conveying guide section is arranged toward the joining point between the reinforcement belt and the base pipe.

8. The device for heating a plastic composite pipe reinforcement strip for heat energy recycling according to claim 7, characterized in that: The reinforcing belt reflux guide section is arranged in parallel with the reinforcing belt, and the base pipe reflux guide section extends along the surface of the base pipe and has a curvature matching that of the base pipe.

9. The heat energy recycling plastic composite pipe reinforcement belt heating device according to claim 1, characterized in that: The hot air guide plate is composed of a bottom plate and two symmetrically arranged side plates. The bottom plate and the side plates, as well as the side plates and the reinforcing belt or the base tube, jointly enclose the hot air return channel.

10. The device for heating a plastic composite pipe reinforcement strip for heat energy recycling according to claim 4, characterized in that: A temperature sensor is provided on the hot air guide plate, and 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 back to the control module to adjust the heating temperature of the hot air gun.

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