Heat energy recovery device for toughening furnace

Abstract

The utility model discloses a heat energy recovery device for a toughening furnace, and provides an efficient heat energy recovery device. According to the device, the evaporation pipe is arranged at the top of the furnace body, and the outer wall of the furnace body is tightly wrapped by the S-shaped heat preservation pipe, so that lost heat energy in the furnace is recycled. Liquid in the evaporation pipe is heated and evaporated, and steam is condensed and flows back after heating the side wall of the furnace body in the heat preservation pipe to form circulation. Due to the S-shaped design of the heat preservation pipe and the application of the heat preservation layer, the heat exchange efficiency and the heat preservation performance are improved. Meanwhile, the bottom drainage valve is designed to facilitate accumulated water cleaning and prevent blockage. According to the device, the energy utilization efficiency is remarkably improved, the production cost is reduced, and the device has wide application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of tempering furnace equipment, in particular to a heat energy recovery device for a tempering furnace. Background Art

[0002] A tempering furnace heat recovery device is a device specifically designed to recover and reuse the heat energy generated during the tempering furnace's heating and cooling processes. Typically installed in the furnace's exhaust or cooling system, this device uses specific heat exchange technology to capture and store heat energy for reuse in subsequent production processes.

[0003] In the prior art, a heat energy recovery device for a tempering furnace with a publication number of "CN214218556U" belongs to the technical field of tempered glass equipment. The key points of its technical solution include a furnace body and a burner for heating the furnace body. The furnace body is provided with an exchange device, the exchange device includes an exchange box, a ventilation duct, a first smoke exhaust pipe and a second smoke exhaust pipe. The exchange box is placed outside the furnace body, the first smoke exhaust pipe and the second smoke exhaust pipe are both connected to the exchange box, the first smoke exhaust pipe is also connected to the burner, the ventilation duct passes through the exchange box and is connected to the furnace body, the ventilation duct is provided with a solenoid valve for controlling the amount of cold air flowing through the ventilation duct, the exchange box is provided with a first deflection baffle fixed in the exchange box, a second deflection baffle is fixed on the first deflection baffle, and the ventilation duct passes through the second deflection baffle. The purpose of this utility model is to provide a heat energy recovery device that can recover the heat energy in the flue gas generated by the burner into the furnace body of the tempering furnace for reuse.

[0004] However, the existing technology still has major deficiencies, such as:

[0005] Existing technologies fail to fully recover all the heat energy generated by tempering furnaces during the heating process. Some of this heat energy may be emitted directly into the atmosphere through the exhaust system or may not be effectively captured during the heat exchange process. Utility Model Content

[0006] The purpose of the present invention is to provide a heat recovery device for a tempering furnace to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A heat energy recovery device for a tempering furnace comprises a furnace body, a furnace opening is formed on one side of the furnace body, a furnace door is rotatably provided on the side of the furnace opening, and a plurality of heating rods are fixedly provided in the furnace body, and the heating rods are arranged in a circular array in the furnace body;

[0009] An evaporation tube is fixedly provided on the top of the furnace body, an evaporation chamber is provided in the evaporation tube, and a plurality of insulation tubes are fixedly connected to the side walls of the evaporation tube. The insulation tubes are wrapped around the outer wall of the furnace body in an S shape, and both ends of the insulation tubes are connected to the evaporation tube. The air inlet end of the insulation tube is provided on the top of the insulation tube, and one end of the evaporation tube is fixedly connected to the water inlet pipe;

[0010] When the furnace body is heated, the liquid in the evaporation tube is heated and evaporated, and the evaporated liquid vapor enters the insulation tube, heating and insulating the side wall of the furnace body. The condensed liquid vapor turns into liquid and returns to the evaporation tube. The water inlet pipe intermittently injects water into the evaporation tube, and the above process is repeated.

[0011] Preferably, a drain valve is fixedly connected to the position of the insulation pipe at the bottom of the furnace body, and the drain valve is used to discharge the liquid accumulated at the bottom of the S-bend of the insulation pipe to prevent the insulation pipe from being blocked.

[0012] Preferably, a plurality of universal wheels are fixedly provided on the bottom of the furnace body.

[0013] Preferably, a thermal insulation layer is fixedly provided on the outer side of the thermal insulation pipe.

[0014] Preferably, a handle is fixedly provided on the thermal insulation layer.

[0015] Preferably, an exhaust pipe is fixedly connected to the furnace body.

[0016] Preferably, a wrench is rotatably provided on the furnace door, a locking block is fixedly provided on the wrench, and a locking hole matching the locking block is fixedly provided on the furnace body.

[0017] Preferably, an air inlet pipe is fixedly provided on the furnace door, a valve plate is rotatably provided on the air inlet pipe, and a lever is fixedly provided on the valve plate.

[0018] Preferably, anti-scalding sleeves are fixedly provided on the wrench and the lever.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Through the design of evaporation tubes and S-shaped insulation tubes, the device can effectively recover the heat lost in the tempering furnace and reuse it in the insulation and heating process of the furnace. This heat recovery mechanism significantly improves energy utilization efficiency and reduces unnecessary energy waste.

[0021] 2. The S-shaped design of the insulation tube not only increases the contact area with the side wall of the furnace, but also extends the flow path of steam within the insulation tube, thereby improving heat exchange efficiency. In addition, the use of the insulation layer further reduces the loss of heat energy to the external environment, improving thermal insulation performance.

[0022] 3. The setting of the drain valve facilitates regular cleaning of the accumulated water in the insulation pipe to prevent clogging. This design makes the maintenance of the device more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the overall device of the utility model from another perspective;

[0025] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the main view of the three-dimensional structure of the utility model.

[0027] In the figure: 1. Furnace body; 2. Furnace mouth; 3. Furnace door; 4. Heating rod; 5. Evaporation tube; 6. Evaporation chamber; 7. Insulation tube; 8. Water inlet pipe; 9. Drain valve; 10. Universal wheel; 11. Insulation layer; 12. Handle; 13. Exhaust pipe; 14. Wrench; 15. Locking block; 16. Locking hole; 17. Inlet pipe; 18. Valve plate; 19. Lever; 20. Anti-scalding cover. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-4 , the utility model provides a technical solution:

[0030] The utility model proposes a heat energy recovery device for a tempering furnace;

[0031] The main body of the device consists of a furnace constructed from sturdy, heat-resistant materials to ensure stable operation in high-temperature environments. A furnace opening is cleverly designed on one side of the furnace to accommodate materials to be processed, such as glass sheets. A door is pivoted to the edge of the opening, fitting snugly around the edge and sealed with high-temperature-resistant materials to prevent heat loss and protect the operator.

[0032] Inside the furnace, a number of heating rods are evenly distributed in a circular array, creating a comprehensive, uniform heating environment and ensuring the furnace temperature quickly reaches and stabilizes at the set value. This arrangement of heating rods not only improves heating efficiency but also reduces energy consumption.

[0033] To fully utilize the heat generated within the furnace, an evaporator tube is fixed to the top of the furnace. Inside the evaporator tube is an evaporation chamber for holding liquid media (such as water or specialized media). Several S-shaped insulation tubes are fixed and connected to the sidewalls of the evaporator tube through precision welding or connection processes. These insulation tubes fit tightly against the outer wall of the furnace, forming an effective heat recovery barrier. The special S-shaped design of the insulation tubes not only increases the contact area with the furnace sidewalls but also effectively recovers heat lost within the furnace through internal heat exchange.

[0034] The air inlet of the insulation tube is located at its top, facilitating the smooth entry of evaporating liquid vapor. Both ends of the insulation tube are connected to the evaporation tube, forming a closed-loop heat recovery system. When the furnace heats up, the liquid medium in the evaporation tube evaporates, and the resulting steam enters the insulation tube. Inside the insulation tube, the steam heats and insulates the furnace walls while gradually cooling and condensing into a liquid. The liquid medium then returns to the evaporation tube through gravity or with the help of a micropump, awaiting the next cycle.

[0035] To ensure long-term stable operation of the system, a drain valve is fixedly installed on the insulation pipe at the bottom of the furnace. This valve is opened regularly to drain any liquid that may accumulate at the bottom of the S-bend in the insulation pipe, preventing pipe blockage caused by excessive water accumulation.

[0036] Furthermore, a number of universal wheels are fixed to the bottom of the furnace, allowing for flexible movement of the entire unit between different work areas. The insulation tube is wrapped with an additional layer of insulation made of high-efficiency thermal insulation material, further reducing heat loss to the outside environment. Handles are also fixed to the insulation layer for easy handling and repositioning.

[0037] An exhaust pipe is fixed to the top of the furnace body to discharge any harmful gases or excess steam that may be generated within the furnace, ensuring a safe and clean working environment. The furnace door is cleverly designed with a locking mechanism: a wrench is mounted on the door, and a locking block is fixed to the wrench. A locking hole is provided on the furnace body to match the locking block. When the furnace door is closed, the locking block is precisely inserted into the locking hole by rotating the wrench, firmly locking the door.

[0038] The furnace door also features an air inlet pipe for introducing protective or process gases into the furnace. A valve disc is rotatably mounted on the inlet pipe, and a lever is fixed to the disc. Operating the lever allows for easy opening and closing of the disc, thereby regulating the air intake. For operator safety, both the wrench and lever are fitted with anti-scalding sleeves to prevent burns when used in high-temperature environments.

[0039] In summary, the heat energy recovery device of the utility model realizes the efficient recovery and reuse of the heat energy lost in the tempering furnace through ingenious structural design, which not only improves the energy utilization efficiency but also reduces the production cost, and has high application value.

[0040] Working Principle: During use, the evaporation tube is fixed to the top of the furnace body, and an evaporation chamber is provided inside the evaporation tube to accommodate the liquid medium. This liquid medium can be water or a special medium with good evaporation performance and heat conduction performance.

[0041] When the furnace begins to heat up, the liquid medium in the evaporation tube absorbs the heat dissipated by the furnace and gradually heats up. As the temperature rises, the liquid medium begins to evaporate and turns into steam.

[0042] The evaporated steam flows smoothly into the S-shaped insulation tube connected to it through the opening at the top of the evaporating tube or a specially designed channel. The air inlet end of the insulation tube is specially designed at the top to allow the steam to enter and flow along the insulation tube smoothly.

[0043] The insulation tube fits tightly against the outer wall of the furnace, forming an effective heat recovery barrier. The special S-shaped design of the insulation tube not only increases the contact area with the furnace side wall, but also extends the steam flow path within the insulation tube, thereby improving heat exchange efficiency.

[0044] Inside the insulation tube, high-temperature steam heats and insulates the sidewalls of the furnace, reducing heat loss from the furnace to the outside environment. At the same time, the steam gradually cools and condenses into a liquid medium during its flow.

[0045] A portion of the condensed liquid medium returns to the evaporation chamber in the evaporation tube. In this way, the liquid medium completes a cycle and is ready to be heated and evaporated again.

[0046] To maintain a continuous supply of liquid medium in the evaporation tubes, the water inlet pipe intermittently injects new liquid medium into the evaporation tubes. In this way, the entire heat recovery system can operate continuously and efficiently.

[0047] A drain valve is fixedly connected to the insulation pipe at the bottom of the furnace body. This drain valve is opened regularly to drain the liquid medium that may accumulate at the bottom of the S-bend of the insulation pipe, preventing the insulation pipe from being blocked due to excessive water accumulation.

[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat recovery device for a tempering furnace, comprising a furnace body (1), characterized in that: A furnace opening (2) is provided on one side of the furnace body (1); a furnace door (3) is rotatably provided on one side of the furnace body (1) at the furnace opening (2); a plurality of heating rods (4) are fixedly provided in the furnace body (1); the heating rods (4) are arranged in a circular array in the furnace body (1); An evaporation tube (5) is fixedly provided on the top of the furnace body (1), an evaporation chamber (6) is provided in the evaporation tube (5), a plurality of insulation tubes (7) are fixedly connected to the side wall of the evaporation tube (5), the insulation tube (7) is wrapped on the outer wall of the furnace body (1) in an S shape, both ends of the insulation tube (7) are connected to the evaporation tube (5), the air inlet end of the insulation tube (7) is provided at the top of the insulation tube (7), and one end of the evaporation tube (5) is fixedly connected to a water inlet pipe (8); When the furnace body (1) is heated, the liquid in the evaporation tube (5) is heated and evaporated, and the evaporated liquid vapor enters the insulation tube (7), and after the side wall of the furnace body (1) is heated and insulated, the condensed liquid vapor turns into liquid and returns to the evaporation tube (5). The water inlet pipe (8) intermittently injects water into the evaporation tube (5), so that the process is repeated.

2. The heat recovery device for a tempering furnace according to claim 1, characterized in that: A drain valve (9) is fixedly connected to the position of the insulation pipe (7) at the bottom of the furnace body (1), and the drain valve (9) is used to discharge liquid accumulated at the bottom of the S-bend of the insulation pipe (7) to prevent the insulation pipe (7) from being blocked.

3. The heat recovery device for a tempering furnace according to claim 2, characterized in that: A plurality of universal wheels (10) are fixedly arranged on the bottom of the furnace body (1).

4. The heat recovery device for a tempering furnace according to claim 3, characterized in that: A heat-insulating layer (11) is fixedly provided on the outer side of the heat-insulating pipe (7).

5. The heat recovery device for a tempering furnace according to claim 4, characterized in that: A handle (12) is fixedly provided on the thermal insulation layer (11).

6. The heat recovery device for a tempering furnace according to claim 5, characterized in that: An exhaust pipe (13) is fixedly connected to the furnace body (1).

7. The heat recovery device for a tempering furnace according to claim 4, characterized in that: A wrench (14) is rotatably provided on the furnace door (3), a locking block (15) is fixedly provided on the wrench (14), and a locking hole (16) matching the locking block (15) is fixedly provided on the furnace body (1).

8. The heat recovery device for a tempering furnace according to claim 7, characterized in that: An air intake pipe (17) is fixedly provided on the furnace door (3), a valve plate (18) is rotatably provided on the air intake pipe (17), and a pull rod (19) is fixedly provided on the valve plate (18).

9. The heat recovery device for a tempering furnace according to claim 8, characterized in that: The wrench (14) and the lever (19) are both fixedly provided with an anti-scalding sleeve (20).

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