Waste heat recoverer

Abstract

The utility model discloses a waste heat recoverer which comprises a recovery box, the bottom of the recovery box is fixedly connected with four supporting legs, the top of the recovery box is fixedly connected with a water inlet pipe, the water inlet pipe is communicated with the interior of the recovery box, and the upper end of the left side wall of the recovery box is fixedly connected with a smoke inlet pipe. The smoke inlet pipe penetrates through the side wall of the recycling box and extends into the recycling box, one end of the smoke inlet pipe is fixedly connected with a U-shaped smoke guide pipe, the U-shaped smoke guide pipe is located in the recycling box, the smoke inlet pipe is communicated with the interior of the U-shaped smoke guide pipe, and a plurality of stirring devices are arranged in the U-shaped smoke guide pipe. Under the mutual cooperation of the rotating rod, the poke rod, the rotating blade, the U-shaped smoke guide pipe and the like, when smoke flows in the U-shaped smoke guide pipe, the poke rod can be driven to rotate, so that a water source in the recycling box is stirred, water in the recycling box is heated uniformly, the high-temperature smoke is fully recycled, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery device. Background Art

[0002] Flue gas is the main way for general energy-consuming equipment to waste energy. Flue gas waste heat recovery mainly converts the heat carried by the flue gas into usable heat through some kind of heat exchange method. Flue gas emissions contain a large amount of heat, and the heat in the flue gas cannot be effectively utilized, resulting in a large amount of energy waste.

[0003] For example, Chinese patent publication number CN209877700U discloses a flue gas waste heat recovery device, including a closed box and a heat exchange device placed in the box, an air inlet pipe and an air outlet pipe are respectively provided at the upper and lower ends of the box, a water inlet main pipe and a water outlet main pipe are provided on the side of the box, and the heat exchange device includes a U-shaped fin tube, which is a laser-welded fin tube, one end of the U-shaped fin tube is connected to the water inlet main pipe, and the other end is connected to the water outlet main pipe. The waste heat recovery device of the utility model adopts laser-welded U-shaped fin tubes, which increases the number of fins and contact area per unit volume, and improves the thermal conductivity of the heat exchange device.

[0004] However, in the above scheme, when the device is used, it is not convenient to use the flow of flue gas to stir the water source in the recovery box, which causes the water source closer to the heat exchange tube to be hotter and the water source farther from the heat exchange tube to be warmer, thereby affecting the full recovery and utilization of flue gas and the convenience is not high. Utility Model Content

[0005] The utility model provides a waste heat recovery device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A waste heat recovery device comprises a recovery box, wherein four supporting feet are fixedly connected to the bottom of the recovery box, a water inlet pipe is fixedly connected to the top of the recovery box, the water inlet pipe is connected to the recovery box, a smoke inlet pipe is fixedly connected to the upper end of the left side wall of the recovery box, the smoke inlet pipe passes through the side wall of the recovery box and extends into the recovery box, one end of the smoke inlet pipe is fixedly connected to a U-shaped smoke guide pipe, the U-shaped smoke guide pipe is located in the recovery box, the smoke inlet pipe is connected to the U-shaped smoke guide pipe, a plurality of stirring devices are arranged in the U-shaped smoke guide pipe, a smoke exhaust pipe is fixedly connected to the upper end of the right side wall of the recovery box, the smoke exhaust pipe passes through the side wall of the recovery box and is connected to the U-shaped smoke guide pipe, a drain pipe is fixedly connected to the side wall of the lower end of the recovery box, the drain pipe is connected to the recovery box, and a valve is arranged on the side wall of the drain pipe.

[0008] As a further improvement of the present technical solution: multiple stirring devices include rotating rods, multiple rotating rods are rotatably connected to the inner wall of the U-shaped smoke guide tube, multiple rotating blades are fixedly connected to the outer ring side wall of each rotating rod, one end of each rotating rod passes through the side wall of the U-shaped smoke guide tube and extends into the recovery box, each outer ring side wall of the rotating rod is rotatably connected to the side wall of the U-shaped smoke guide tube through a sealed bearing, multiple toggle rods are fixedly connected to the outer ring side wall of one end of each rotating rod, multiple inclined plates are fixedly connected to the inner wall of the U-shaped smoke guide tube, each inclined plate is respectively located next to each rotating rod, multiple inclined plates on the left side are located above each rotating rod, and multiple inclined plates on the right side are located below the rotating rod.

[0009] As a further improvement of the technical solution: the bottom side wall of the recovery box is arranged in an inclined shape, and the drain pipe is located at the lowest point of the bottom inclined side wall of the recovery box.

[0010] As a further improvement of the technical solution: a filter is provided in the smoke inlet pipe.

[0011] As a further improvement of the technical solution: the inner side wall of the U-shaped smoke guide pipe is fixedly connected to a V-shaped baffle, and the inner side wall of the U-shaped smoke guide pipe is fixedly connected to two limit plates.

[0012] As a further improvement of the technical solution: the U-shaped smoke guide pipe is made of copper.

[0013] Compared with the prior art, the beneficial effect of the utility model is that the device, through the cooperation of the rotating rod, the toggle rod, the rotating blades, the U-shaped smoke guide pipe and other components, can drive the toggle rod to rotate when the smoke flows in the U-shaped smoke guide pipe, thereby stirring the water source in the recovery box, so that the water in the recovery box is heated evenly, thereby fully recycling the high-temperature smoke, and the utility model is highly practical.

[0014] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of a front cross-sectional structure of a waste heat recovery device proposed by the utility model;

[0017] Figure 2 This is a front view structural schematic diagram of a waste heat recovery device proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the left side cross-sectional structure of a U-shaped smoke guide pipe in a waste heat recovery device proposed by the utility model;

[0019] Figure 4 for Figure 1 Schematic diagram of the locally enlarged structure of A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Recovery box; 2. Water inlet pipe; 3. Smoke inlet pipe; 4. Filter; 5. Inclined plate; 6. Smoke exhaust pipe; 7. Rotating rod; 8. U-shaped smoke guide pipe; 9. Support foot; 10. V-shaped baffle; 11. Limit plate; 12. Drain pipe; 13. Valve; 14. Rotating blades; 15. Toggle rod; 16. Sealed bearing. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figure 1-4In the embodiment of the utility model, a waste heat recovery device includes a recovery box 1, four supporting legs 9 are fixedly connected to the bottom of the recovery box 1, a water inlet pipe 2 is fixedly connected to the top of the recovery box 1, and the water inlet pipe 2 is connected to the recovery box 1. A smoke inlet pipe 3 is fixedly connected to the upper end of the left side wall of the recovery box 1, and the smoke inlet pipe 3 passes through the side wall of the recovery box 1 and extends into the recovery box 1. One end of the smoke inlet pipe 3 is fixedly connected to a U-shaped smoke guide pipe 8, and the U-shaped smoke guide pipe 8 is located in the recovery box 1. The smoke inlet pipe 3 is connected to the U-shaped smoke guide pipe 8, and a plurality of stirring devices are arranged in the U-shaped smoke guide pipe 8. A smoke exhaust pipe 6 is fixedly connected to the upper end of the right side wall of the recovery box 1, and the smoke exhaust pipe 6 passes through the side wall of the recovery box 1 and is connected to the U-shaped smoke guide pipe 8. A drain pipe 12 is fixedly connected to the side wall of the lower end of the recovery box 1, and the drain pipe 12 is connected to the recovery box 1, and a valve 13 is arranged on the side wall of the drain pipe 12.

[0026] See also Figure 1 , Figure 3-4 , the plurality of stirring devices each include a rotating rod 7, the plurality of rotating rods 7 are rotatably connected to the inner side wall of the U-shaped smoke guide tube 8, a plurality of rotating blades 14 are fixedly connected to the outer side wall of each rotating rod 7, one end of each rotating rod 7 penetrates the side wall of the U-shaped smoke guide tube 8 and extends into the recovery box 1, the outer side wall of each rotating rod 7 is rotatably connected to the side wall of the U-shaped smoke guide tube 8 through a sealed bearing 16, a plurality of toggle rods 15 are fixedly connected to the outer side wall of one end of each rotating rod 7, a plurality of inclined plates 5 are fixedly connected to the inner side wall of the U-shaped smoke guide tube 8, and each inclined plate 5 is respectively located on each rotating rod 7 Next, multiple inclined plates 5 on the left side are located above each rotating rod 7, and multiple inclined plates 5 on the right side are located below the rotating rod 7. The inclined plates 5 are set to block the smoke, so that the smoke flows between the inclined plates 5 and the inner wall of the U-shaped smoke guide pipe 8. When the smoke squeezes the rotating blades 14, it will drive the rotating blades 14 to rotate, and the rotating blades 14 will drive the rotating rod 7 to rotate. The rotating rod 7 also drives multiple toggle rods 15 to rotate. When the multiple toggle rods 15 rotate, the water in the recovery box 1 can be stirred, so that the water in the recovery box 1 is evenly heated, thereby fully recycling the high-temperature smoke.

[0027] See also Figure 1-2 The bottom side wall of the recovery box 1 is arranged in an inclined shape, and the drain pipe 12 is located at the lowest point of the inclined side wall of the bottom of the recovery box 1, so that the water source in the recovery box 1 flows quickly to the drain pipe 12 along the inclined side wall of the bottom of the recovery box 1, avoiding water source remaining at the bottom of the recovery box 1.

[0028] See also Figure 1-2 A filter screen 4 is provided in the smoke inlet pipe 3 , and impurities in the smoke can be filtered through the filter screen 4 to prevent the impurities from entering the U-shaped smoke guide pipe 8 and affecting the heat exchange efficiency of the U-shaped smoke guide pipe 8 .

[0029] See also Figure 1 , Figure 3 A V-shaped baffle 10 is fixedly connected to the inner wall of the U-shaped smoke guide pipe 8, and two limit plates 11 are fixedly connected to the inner wall of the U-shaped smoke guide pipe 8. The V-shaped baffle 10 and the two limit plates 11 can block the smoke and make the smoke move along the side walls of the V-shaped baffle 10 and the two limit plates 11, thereby increasing the time the smoke stays in the U-shaped smoke guide pipe 8 and improving the efficiency of smoke recovery.

[0030] See also Figure 1 , Figure 3-4 The U-shaped smoke guide tube 8 is made of copper material, which has good thermal conductivity, thereby improving the heat exchange efficiency of the U-shaped smoke guide tube 8.

[0031] The working principle of the utility model is as follows: high-temperature flue gas enters the U-shaped smoke guide tube 8 through the smoke inlet pipe 3, and the impurities in the flue gas can be filtered through the filter screen 4 to prevent the impurities from entering the U-shaped smoke guide tube 8 and affecting the heat exchange efficiency of the U-shaped smoke guide tube 8. The high-temperature flue gas exchanges heat with the water in the recovery box 1 through the U-shaped smoke guide tube 8, thereby heating the water. The inclined plate 5 can be set to block the flue gas, so that the flue gas flows between the inclined plate 5 and the inner wall of the U-shaped smoke guide tube 8, and the flue gas will drive the rotating blade 14 to rotate when squeezing the rotating blade 14. The rotating blade 14 drives the rotating rod 7 to rotate, and the rotating rod 7 drives the multiple toggle rods 15 to rotate at the same time. The multiple toggle rods 15 can stir the water in the recovery box 1 when rotating, so that the water in the recovery box 1 is evenly heated, thereby fully recycling the high-temperature flue gas. The V-shaped baffle 10 and the limit plate 11 are provided to block the flue gas and make the flue gas move along the side walls of the V-shaped baffle 10 and the limit plate 11, thereby increasing the time that the flue gas stays in the U-shaped smoke guide pipe 8 and improving the recycling efficiency of the flue gas. Finally, the flue gas is discharged through the exhaust pipe 6.

[0032] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A waste heat recovery device, comprising a recovery box (1), characterized in that: The bottom of the recovery box (1) is fixedly connected to four supporting legs (9); the top of the recovery box (1) is fixedly connected to a water inlet pipe (2), the water inlet pipe (2) is connected to the inside of the recovery box (1); the upper end of the left side wall of the recovery box (1) is fixedly connected to a smoke inlet pipe (3), the smoke inlet pipe (3) passes through the side wall of the recovery box (1) and extends into the recovery box (1); one end of the smoke inlet pipe (3) is fixedly connected to a U-shaped smoke guide pipe (8), the U-shaped smoke guide pipe (8) is located in the recovery box (1), and the smoke inlet pipe (3) is fixedly connected to the upper end of the left side wall of the recovery box (1). The smoke inlet pipe (3) is connected to the inside of the U-shaped smoke guide pipe (8), and a plurality of stirring devices are arranged in the U-shaped smoke guide pipe (8). A smoke exhaust pipe (6) is fixedly connected to the upper end of the right side wall of the recovery box (1), and the smoke exhaust pipe (6) passes through the side wall of the recovery box (1) and is connected to the inside of the U-shaped smoke guide pipe (8). A drain pipe (12) is fixedly connected to the side wall of the lower end of the recovery box (1), and the drain pipe (12) is connected to the inside of the recovery box (1). A valve (13) is arranged on the side wall of the drain pipe (12).

2. A waste heat recovery device according to claim 1, characterized in that: The plurality of stirring devices all comprise a rotating rod (7), the plurality of rotating rods (7) are all rotatably connected to the inner side wall of the U-shaped smoke guide tube (8), a plurality of rotating blades (14) are fixedly connected to the outer side wall of each rotating rod (7), one end of each rotating rod (7) passes through the side wall of the U-shaped smoke guide tube (8) and extends into the recovery box (1), the outer side wall of each rotating rod (7) is rotatably connected to the side wall of the U-shaped smoke guide tube (8) through a sealing bearing (16), a plurality of toggle rods (15) are fixedly connected to the outer side wall of one end of each rotating rod (7), a plurality of inclined plates (5) are fixedly connected to the inner side wall of the U-shaped smoke guide tube (8), each of the inclined plates (5) is respectively located beside each rotating rod (7), the plurality of inclined plates (5) on the left side are located above each rotating rod (7), and the plurality of inclined plates (5) on the right side are located below the rotating rod (7).

3. A waste heat recovery device according to claim 1, characterized in that: The side wall of the bottom of the recovery box (1) is arranged in an inclined shape, and the drainage pipe (12) is located at the lowest point of the inclined side wall of the bottom of the recovery box (1).

4. A waste heat recovery device according to claim 1, characterized in that: A filter screen (4) is arranged inside the smoke inlet pipe (3).

5. The waste heat recovery device according to claim 1, characterized in that: The inner side wall of the U-shaped smoke guide tube (8) is fixedly connected to a V-shaped baffle plate (10), and the inner side wall of the U-shaped smoke guide tube (8) is fixedly connected to two limit plates (11).

6. A waste heat recovery device according to claim 1, characterized in that: The U-shaped smoke guide pipe (8) is made of copper.

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