A continuous mesh belt furnace oil tank waste heat utilization device

Abstract

This utility model discloses a waste heat utilization device for a continuous mesh belt furnace oil tank, including an oil tank body and a waste heat recovery structure. The waste heat recovery structure is disposed inside the oil tank and comes into contact with the hot oil inside the oil tank body, thereby heating the water inside the waste heat recovery structure. An inlet pipe and an outlet pipe are connected to both ends of the waste heat recovery structure, with the inlet pipe connected to a cleaning water tank and the outlet pipe connected to a heating module. This utility model, by setting a waste heat recovery structure inside the oil tank, directly utilizes the waste heat of the high-temperature hot oil in the oil tank to preheat and heat the flowing water; it recovers the heat originally lost from the oil tank, significantly reducing the energy consumption of the subsequent heating module, thus achieving the purpose of energy saving and consumption reduction.

Description

Technical Field

[0001] This utility model relates to a waste heat utilization device for an oil tank, specifically a waste heat utilization device for a continuous mesh belt furnace oil tank. Background Technology

[0002] In the heat treatment process of a continuous mesh belt furnace, after quenching, the workpiece enters an oil bath for cooling or specific treatment. The oil bath typically needs to maintain a high operating temperature (e.g., 150-200℃ or higher), which makes the oil bath itself a huge heat source, with heat continuously dissipating into the environment through the tank walls, oil surface, and internal structure. This dissipated heat (waste heat) not only causes significant energy waste but also increases the cooling load on the workshop.

[0003] Meanwhile, heat treatment production lines typically include a subsequent cleaning process to remove oil and grease from the workpiece surface. The cleaning machine requires a continuous supply of hot water at a suitable temperature (e.g., 60-80°C). Currently, the mainstream methods for providing hot water to the cleaning machine are direct heating using electric heating elements, gas / oil boilers, or steam. This heating method is energy-intensive and has high operating costs, making it a key area of ​​focus for enterprises seeking energy conservation and cost reduction. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a continuous mesh belt furnace oil tank waste heat utilization device to solve the problems existing in the background art.

[0005] The present invention relates to a continuous mesh belt furnace oil tank waste heat utilization device, which is achieved through the following technical solution, including an oil tank body and a waste heat recovery structure.

[0006] The waste heat recovery structure is located inside the oil tank and comes into contact with the hot oil inside the main body of the oil tank, thereby heating the water inside the waste heat recovery structure.

[0007] The waste heat recovery structure is connected to an inlet pipe and an outlet pipe at both ends, and the inlet pipe is connected to the cleaning water tank, while the outlet pipe is connected to a heating module; a straight pipe is also directly connected to the inlet pipe and the outlet pipe to achieve direct connection between the inlet pipe and the outlet pipe.

[0008] When the waste heat recovery device is not working, the water in the cleaning tank is heated by the heating module;

[0009] The heating module is connected to the spray pipe that is transported back to the cleaning machine, and the workpiece is cleaned through the spray pipe.

[0010] As a preferred technical solution, the waste heat recovery structure includes hot water pipes installed on both sides and at the bottom of the oil tank;

[0011] The hot water pipe is bent to extend the flow time of water in the oil tank, thereby realizing the function of waste heat recovery.

[0012] The ends of the hot water pipes are connected and merged, with one end connected to the inlet pipe and the other end connected to the outlet pipe.

[0013] As a preferred technical solution, a first valve is installed on both the inlet and outlet water pipes, and the operation of the waste heat recovery device is achieved by opening and closing the first valve.

[0014] The straight pipe is equipped with a second valve at both ends. When the waste heat recovery device is working, the first valve is open and the second valve is closed; when the waste heat recovery device is not working, the second valve is open and the first valve is closed.

[0015] As a preferred technical solution, the heating module includes a heating water tank, a cover plate, and an electric heating element;

[0016] The electric heating element is located at the bottom of the heating water tank, and a cover plate is placed on top of the heating water tank. A temperature sensor is installed inside the heating water tank to detect the temperature of the water inside. When the temperature sensor detects that the water temperature in the heating water tank has not reached the required value, the electric heating element is controlled by the thermostat to heat the water in the heating water tank to reach the required temperature for cleaning.

[0017] As a preferred technical solution, it also includes a control panel, which is connected to the first valve, the second valve, the thermostat, and the temperature sensor, and is powered by an external power source.

[0018] As a preferred technical solution, a viewing window is provided on the cover plate.

[0019] The beneficial effects of this utility model are:

[0020] This invention utilizes a waste heat recovery structure inside the oil tank to preheat and heat the flowing water by directly using the waste heat of the high-temperature hot oil in the oil tank; it recovers the heat originally lost from the oil tank, significantly reducing the energy consumption of the subsequent heating module and achieving the goal of energy saving and consumption reduction.

[0021] The hot water pipes of this invention are curved and arranged on both sides and the bottom of the oil tank, extending the water flow path and heat exchange time. This increases the contact area between the water pipes and the hot oil, significantly improving heat exchange efficiency and ensuring full recovery of waste heat.

[0022] This invention utilizes a first valve and a second valve. During waste heat recovery, the first valve is opened and the second valve is closed, allowing water to flow through the hot water pipe in the oil tank to absorb waste heat before flowing to the heating module. When the waste heat is unavailable or the device is under maintenance, the first valve is closed and the second valve is opened, allowing water to flow through a straight pipe, bypassing the waste heat recovery structure, and directly into the heating module for full-power electric heating. This ensures the continuity and stability of the hot water supply for cleaning, unaffected by the operating status of the waste heat recovery device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the waste heat recovery structure of this utility model;

[0026] Figure 3 and Figure 4 This is a schematic diagram of the heating module structure of this utility model.

[0027] Explanation of reference numerals in the attached figures

[0028] 1. Oil tank body; 2. Waste heat recovery structure; 3. Water inlet pipe; 4. Water outlet pipe; 5. Heating module; 6. Straight pipe; 7. Hot water pipe; 8. First valve; 9. Second valve; 10. Heating water tank; 11. Cover plate; 12. Electric heating element; 13. Viewing window. Detailed Implementation

[0029] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0030] like Figures 1-4 As shown, the present invention provides a continuous mesh belt furnace oil tank waste heat utilization device, which includes an oil tank body 1 and a waste heat recovery structure 2.

[0031] The waste heat recovery structure 2 is located inside the oil tank and is in contact with the hot oil inside the oil tank body 1, thereby heating the water inside the waste heat recovery structure 2.

[0032] The waste heat recovery structure 2 is connected to an inlet pipe 3 and an outlet pipe 4 at both ends, and the inlet pipe 3 is connected to the cleaning water tank, while the outlet pipe 4 is connected to a heating module 5; a straight pipe 6 is also directly connected to the inlet pipe 3 and the outlet pipe 4, so that the inlet pipe 3 and the outlet pipe 4 can be directly connected.

[0033] When the waste heat recovery device is not working, the water in the cleaning water tank is heated by the heating module 5;

[0034] The heating module 5 is connected to the spray pipe that is transported back to the cleaning machine, and the workpiece is cleaned through the spray pipe.

[0035] Among them, the waste heat recovery structure 2 includes hot water pipes 7 installed on both sides and at the bottom of the oil tank;

[0036] The hot water pipe 7 is bent to extend the flow time of water in the oil tank, thereby realizing the function of waste heat recovery.

[0037] The ends of the hot water pipe 7 are connected and merged, with one end connected to the inlet pipe 3 and the other end connected to the outlet pipe 4.

[0038] The inlet pipe 3 and the outlet pipe 4 are each equipped with a first valve 8, and the operation of the waste heat recovery device is achieved by opening and closing the first valve 8.

[0039] The straight pipe 6 is equipped with second valves 9 at both ends. When the waste heat recovery device is working, the first valve 8 is open and the second valve 9 is closed; when the waste heat recovery device is not working, the second valve 9 is open and the first valve 8 is closed.

[0040] The heating module 5 includes a heating water tank 10, a cover plate 11, and an electric heating element 12.

[0041] The electric heating element 12 is located at the bottom of the heating water tank 10, and the cover plate 11 covers the heating water tank 10. A temperature sensor is installed inside the heating water tank 10 to detect the temperature of the water in the heating water tank 10. When the temperature sensor detects that the water temperature in the heating water tank 10 has not reached the required value, the electric heating element 12 is controlled by the thermostat to heat the water in the heating water tank 10 to reach the required temperature for cleaning.

[0042] For ease of control, this embodiment also includes a control panel, which is connected to the first valve 8, the second valve 9, the thermostat, and the temperature sensor, and is powered by an external power source.

[0043] In order to achieve the effect of observation, a viewing window 13 is provided on the cover plate 11 in this embodiment.

[0044] This invention utilizes a first valve and a second valve. During waste heat recovery, the first valve is opened and the second valve is closed, allowing water to flow through the hot water pipe in the oil tank to absorb waste heat before flowing to the heating module (which may require only a small amount of supplemental heating or none at all). When the waste heat is unavailable or the device is under maintenance, the first valve is closed and the second valve is opened, allowing water to flow through a straight pipe, bypassing the waste heat recovery structure, and directly into the heating module for full-power electric heating. This ensures the continuity and stability of the hot water supply for cleaning, unaffected by the operating status of the waste heat recovery device.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A continuous mesh belt furnace oil tank waste heat utilization device, characterized in that, It includes the main body of the oil tank (1) and the waste heat recovery structure (2); The waste heat recovery structure (2) is located inside the oil tank and is in contact with the hot oil inside the oil tank body (1), thereby heating the water inside the waste heat recovery structure (2). The waste heat recovery structure (2) is connected to an inlet pipe (3) and an outlet pipe (4) at both ends, and the inlet pipe (3) is connected to the cleaning water tank, and the outlet pipe (4) is connected to a heating module (5); a straight pipe (6) is also directly connected to the inlet pipe (3) and the outlet pipe (4), and the direct connection between the inlet pipe (3) and the outlet pipe (4) is achieved through the straight pipe (6); When the waste heat recovery device is not working, the water in the cleaning tank is heated by the heating module (5); The heating module (5) is connected to the spray pipe that is transported back to the cleaning machine, and the workpiece is cleaned through the spray pipe.

2. The continuous mesh belt furnace oil tank waste heat utilization device according to claim 1, characterized in that: The waste heat recovery structure (2) includes hot water pipes (7) installed on both sides and at the bottom of the oil tank; The hot water pipe (7) is bent to extend the flow time of water in the oil tank, thereby realizing the function of waste heat recovery. The ends of the hot water pipe (7) are connected and merged, with one end connected to the inlet pipe (3) and the other end connected to the outlet pipe (4).

3. The continuous mesh belt furnace oil tank waste heat utilization device according to claim 1, characterized in that: The inlet pipe (3) and outlet pipe (4) are each equipped with a first valve (8), and the operation and non-operation of the waste heat recovery device are realized by opening and closing the first valve (8); The straight pipe (6) is equipped with a second valve (9) at both ends. When the waste heat recovery device is working, the first valve (8) is open and the second valve (9) is closed. When the waste heat recovery device is not working, the second valve (9) is open and the first valve (8) is closed.

4. The continuous mesh belt furnace oil tank waste heat utilization device according to claim 1, characterized in that: The heating module (5) includes a heating water tank (10), a cover plate (11), and an electric heating tube (12); The electric heating tube (12) is located at the bottom of the heating water tank (10), and the cover plate (11) covers the heating water tank (10). The heating water tank (10) is equipped with a temperature sensor. The temperature sensor detects the temperature of the water in the heating water tank (10). When the temperature sensor detects that the water temperature in the heating water tank (10) has not reached the required value, the electric heating tube (12) is controlled by the thermostat to heat the water in the heating water tank (10) so that its temperature reaches the required value for cleaning.

5. The continuous mesh belt furnace oil tank waste heat utilization device according to claim 1, characterized in that: It also includes a control panel, which is connected to the first valve (8), the second valve (9), the thermostat and the temperature sensor, and is powered by an external power source.

6. The continuous mesh belt furnace oil tank waste heat utilization device according to claim 4, characterized in that: A viewing window (13) is provided on the cover plate (11).

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