A heat treatment furnace flue gas waste heat exchange device

Abstract

This utility model discloses a waste heat exchange device for flue gas from a heat treatment furnace, belonging to the technical field of waste heat exchange devices. It includes an exchange tank with a water tank at its bottom. Each side of the exchange tank has an air inlet, and the other side has an air outlet. The water tank has a water inlet on one side and a water outlet on the other side. A drain outlet is located at the bottom of the water tank. A metal tube is installed inside the exchange tank, and a transmission tube is attached to the bottom of the metal tube, extending into the water tank. This utility model utilizes a striking rod to drive a connecting rod to strike the inner wall of the connecting cylinder, generating sound waves. These waves are then transmitted through the hollow metal tube and the transmission tube, causing vibration on the outer wall of the metal tube. This vibration removes impurities adhering to the metal tube without disassembling the outer casing, making it convenient to use.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat exchange devices, and in particular to a waste heat exchange device for flue gas from a heat treatment furnace. Background Technology

[0002] During the exhaust process of a heat treatment furnace, the flue gas usually contains a large amount of heat. In order to avoid the waste of this heat, a waste heat exchange device is installed on the flue gas exhaust pipe to recover and utilize the heat.

[0003] Most existing waste heat recovery devices transfer heat to the inside of a water tank for water heating. Typically, a metal rod connects the water tank and the flue gas pipe. However, impurities in the flue gas adhere to the outer wall of the metal pipe after prolonged contact, thus coating the pipe and affecting the heat transfer efficiency of the metal rod. Furthermore, subsequent cleaning requires disassembling the outer shell, making it inconvenient to use. Therefore, we propose a waste heat exchange device for heat treatment furnace flue gas to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies mentioned in the background section by proposing a waste heat exchange device for flue gas from a heat treatment furnace.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A waste heat exchange device for flue gas from a heat treatment furnace includes an exchange tank, a water tank at the bottom of the exchange tank, an air inlet on one side of the exchange tank and an air outlet on the other side of the exchange tank, a water inlet on one side of the water tank and a water outlet on the other side of the water tank, a drain outlet at the bottom of the water tank, a metal pipe inside the exchange tank, a transfer pipe at the bottom of the metal pipe extending into the water tank, an installation pipe at the top of the metal pipe penetrating the inner wall of the exchange tank and extending to the outside, and a connecting cylinder is provided thereon; support rods are fixedly installed around the bottom of the connecting cylinder.

[0007] By striking the striking rod, the striking rod drives the connecting rod to strike the inside of the connecting cylinder, thereby generating sound waves that are transmitted to the inside of the metal tube to complete the vibration, which can cause impurities to be removed.

[0008] Preferably, the metal tube is arranged in a planar spiral shape, and there are three sets of transfer tubes. Both the metal tube and the transfer tube are vacuum-sealed.

[0009] It allows the hot flue gas to come into better contact with the metal pipe, and the hollow metal pipe also allows for faster heat transfer.

[0010] Preferably, connecting pipes are fixedly installed at both ends of the metal tube, and the connecting pipes are in communication with the interior of the metal tube;

[0011] It can connect and fix multiple sets of metal tubes, preventing the metal tubes from shaking too much during vibration and causing damage.

[0012] Preferably, a connecting rod is inserted into the end of the connecting cylinder, and a striking rod is fixedly installed on the end of the connecting rod. The striking rod is fixedly connected to multiple sets of connecting rods.

[0013] By striking the striking rod, multiple sets of connecting rods can be struck simultaneously, resulting in better vibration transmission.

[0014] Preferably, a movable rod is fixedly installed at one end of the connecting rod that extends into the connecting cylinder, and the movable rod has protrusions at both ends, with its cross-section being I-shaped.

[0015] This allows the connecting rod to drive the moving rod to strike inside the connecting cylinder, while preventing the connecting rod from detaching.

[0016] Preferably, a mounting block is provided at the middle position of the inner wall of the connecting cylinder, and the mounting block is sleeved on the outside of the moving rod;

[0017] This improves the stability of the moving rod during its reciprocating motion, further preventing it from detaching.

[0018] Preferably, support springs are fixedly installed on both sides of the mounting block, the support springs are sleeved on the outside of the moving rod, and the other end of the support springs is fixedly connected to the end of the moving rod.

[0019] The support spring can provide cushioning and reciprocating motion, thereby increasing the striking frequency of the moving rod and improving the sound wave transmission effect.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. This utility model can generate sound waves by striking the striking rod to drive the connecting rod to strike the inner wall of the connecting cylinder. The sound waves are then transmitted through the hollow metal tube and the transmission tube, causing the outer wall of the metal tube to vibrate. This vibrates and removes impurities adhering to the metal tube without disassembling the outer shell, making it convenient to use.

[0022] 2. This utility model can drive the moving rod to move during the striking process, and continue to buffer and recover through the support spring at any time, so that the moving rod can reciprocate inside the connecting cylinder, thereby prolonging the sound wave time generated by the striking and better removing impurities. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a waste heat exchange device for flue gas from a heat treatment furnace proposed in this utility model.

[0024] Figure 2 for Figure 1 A schematic diagram of the frontal cross-sectional structure;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure of the metal tube;

[0026] Figure 4 for Figure 3 A frontal cross-sectional view of the connecting cylinder.

[0027] In the diagram: 1. Exchange tank; 2. Air inlet; 3. Air outlet; 4. Water tank; 5. Water inlet; 6. Water outlet; 7. Sewage outlet; 8. Metal pipe; 9. Transfer pipe; 10. Connecting pipe; 11. Installation pipe; 12. Connecting cylinder; 13. Support rod; 14. Mounting block; 15. Moving rod; 16. Support spring; 17. Connecting plug rod; 18. Striking rod. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figure 1-4 The waste heat exchange device for flue gas from a heat treatment furnace shown has an air inlet 2 fixedly connected to one end of an exchange tank 1, and an air outlet 3 fixedly installed at the other end of the exchange tank 1. The exchange tank 1, air inlet 2, and air outlet 3 are on the same axis. A water tank 4 is then fixedly installed at the bottom of the exchange tank 1. Four sets of metal pipes 8 are arranged laterally inside the exchange tank 1. These metal pipes 8 are arranged in a planar spiral pattern, similar to the structure of a mosquito coil. Three sets of transfer pipes 9 are then fixedly installed on the lower half of the metal pipes 8. These transfer pipes 9 are vertically downward and pass through... The water inlet 5 is fixedly installed on the upper part of the side wall of the water tank 4, and the outlet 6 is fixedly installed on the lower part of the other side wall of the water tank 4. Then, the drain outlet 7 is fixedly installed at the center of the bottom of the water tank 4. At the same time, the support feet are fixedly installed around the bottom of the water tank 4. Connecting pipes 10 are fixedly installed at both ends of the metal pipe 8 so that the four sets of metal pipes 8 are connected to each other. The metal pipe 8, the transfer pipe 9 and the connecting pipe 10 are all hollow pipes.

[0030] For a detailed description of the connecting cylinder 12 in this embodiment, please refer to [link / reference]. Figure 3 and Figure 4 An installation tube 11 is fixedly installed on the upper half of the metal tube 8. The top end of the installation tube 11 extends through the inner wall of the exchange tank 1 to the outside. A connecting cylinder 12 is then fixedly installed on the top end of the installation tube 11. Both the connecting cylinder 12 and the installation tube 11 are hollow and communicate with the interior of the metal tube 8. Support rods 13 are fixedly installed around the bottom of the connecting cylinder 12. The support rods 13 are inclined, and the other end of the support rods 13 is fixedly connected to the outer wall of the exchange tank 1 to increase the stability of the connecting cylinder 12. An installation block 14 is fixedly installed in the middle of the interior of the connecting cylinder 12, and a moving rod 15 is inserted in the middle of the installation block 14. Both ends of the movable rod 15 are provided with protrusions. Then, support springs 16 are provided on both sides of the mounting block 14. The support springs 16 are sleeved on the outside of the movable rod 15, so that one end of the support spring 16 is fixedly connected to the mounting block 14, and the other end of the support spring 16 is fixedly connected to the end of the movable rod 15. Then, a connecting rod 17 is inserted into the front of the connecting cylinder 12. The end of the connecting rod 17 extends into the inside of the connecting cylinder 12 and is fixedly connected to one end of the movable rod 15. At the same time, a striking rod 18 is fixedly installed on the outer side of the connecting rod 17, so that the ends of the four sets of connecting rods 17 are all connected to the striking rod 18.

[0031] Working principle: The exhaust port 3 is connected to the flue gas outlet of the heat treatment furnace, and then the exhaust port 3 is connected to the outside through a pipe. The water inlet 5 is connected to the water source through a pipe. During operation, the high-temperature flue gas inside the heat treatment furnace enters the interior of the heat exchange tank 1 through the exhaust port 2, and then comes into contact with the metal pipe 8, thereby heating the metal pipe 8. The metal pipe 8 then transfers the temperature to the interior of the water tank 4 through the transfer pipe 9, causing the water temperature inside the water tank 4 to rise, so that personnel can use the waste heat of the heat treatment furnace to use hot water.

[0032] After prolonged operation, impurities in the flue gas will adhere to the outer wall of the metal pipe 8, affecting its heat transfer efficiency. At this point, personnel can strike the striking rod 18, causing it to move the connecting rod 17. This, in turn, causes the connecting rod 17 to move the moving rod 15, striking the inner wall of the connecting cylinder 12. Simultaneously, the support spring 16 moves the moving rod 15 back and forth, extending the striking time. The resulting sound waves are then transmitted through the mounting tube 11 to the interior of the metal pipe 8, causing the entire metal pipe 8 to vibrate. This vibration removes the impurities adhering to the surface of the metal pipe 8, facilitating its continued use.

[0033] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0034] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0035] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A waste heat exchange device for flue gas from a heat treatment furnace, comprising an exchange tank (1), characterized in that, The bottom of the exchange tank (1) is provided with a water tank (4). One side of the exchange tank (1) is provided with an air inlet (2), and the other side of the exchange tank (1) is provided with an air outlet (3). One side of the water tank (4) is provided with a water inlet (5), and the other side of the water tank (4) is provided with a water outlet (6). The bottom of the water tank (4) is provided with a sewage outlet (7). The interior of the exchange tank (1) is provided with a metal pipe (8). The bottom of the metal pipe (8) is provided with a transfer pipe (9). The transfer pipe (9) extends into the interior of the water tank (4). The top of the metal pipe (8) is provided with an installation pipe (11). The installation pipe (11) penetrates the inner wall of the exchange tank (1) and extends to the outside and is provided with a connecting cylinder (12). Support rods (13) are fixedly installed around the bottom of the connecting cylinder (12).

2. The waste heat exchange device for flue gas from a heat treatment furnace according to claim 1, characterized in that, The metal tube (8) is arranged in a planar spiral shape, and there are three sets of the transfer tube (9). Both the metal tube (8) and the transfer tube (9) are vacuum-equipped.

3. The waste heat exchange device for flue gas from a heat treatment furnace according to claim 1, characterized in that, Connecting pipes (10) are fixedly installed at both ends of the metal tube (8), and the connecting pipes (10) are in communication with the interior of the metal tube (8).

4. The waste heat exchange device for flue gas from a heat treatment furnace according to claim 1, characterized in that, The end of the connecting cylinder (12) is provided with a connecting rod (17), and a striking rod (18) is fixedly installed on the end of the connecting rod (17). The striking rod (18) is fixedly connected to multiple sets of connecting rods (17).

5. The waste heat exchange device for flue gas from a heat treatment furnace according to claim 4, characterized in that, The connecting rod (17) extends into the interior of the connecting cylinder (12) and a movable rod (15) is fixedly installed at one end. The movable rod (15) has protrusions at both ends and its cross-section is I-shaped.

6. The waste heat exchange device for flue gas from a heat treatment furnace according to claim 5, characterized in that, An installation block (14) is provided at the middle position of the inner wall of the connecting cylinder (12), and the installation block (14) is sleeved on the outside of the moving rod (15).

7. The waste heat exchange device for flue gas from a heat treatment furnace according to claim 6, characterized in that, Support springs (16) are fixedly installed on both sides of the mounting block (14). The support springs (16) are sleeved on the outside of the moving rod (15), and the other end of the support springs (16) is fixedly connected to the end of the moving rod (15).

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