Waste gas heat energy recovery device

Abstract

The utility model discloses a waste gas heat energy recovery device which comprises a recovery box, a water inlet pump, a water outlet pump, a gas inlet pipe, a heat exchange pipe and a gas outlet are arranged on the recovery box, and the water inlet pump, the water outlet pump and the gas inlet pipe are all fixedly connected with the outer side face of the recovery box. The water inlet pump and the water outlet pump penetrate through the outer side face of the recycling box and then communicate with heat exchange pipes, the air inlet pipe communicates with the interior of the recycling box, and the multiple heat exchange pipes communicate with one another and are fixedly connected with the inner wall of the recycling box. A plurality of exhaust ports are uniformly distributed on the recycling bin body surface symmetrical to the air inlet pipe, two one-way exhaust plates are arranged in the exhaust ports and are distributed in a stacking manner, and the upper ends and the lower ends of the one-way exhaust plates are rotationally connected with the upper end surfaces and the lower end surfaces in the exhaust ports respectively. The utility model has the beneficial effect of improving the utilization rate of waste gas heat energy.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment, and in particular to a waste gas heat energy recovery device. Background Technology

[0002] Energy and power engineering projects generate waste gas during operation, which is harmful to human health and requires timely treatment. Waste gas generally also contains excess heat energy. To improve heat energy utilization, this heat energy is often recovered and reused. In places requiring large amounts of hot water, the heat energy from the waste gas can be used to heat water. However, existing devices for this purpose often have large openings to ensure ventilation, which prevents the full utilization of the waste gas's heat energy and results in waste. Utility Model Content

[0003] The present invention aims to overcome the shortcomings of low waste gas thermal energy utilization rate in the existing technology and provides a waste gas thermal energy recovery device to improve the waste gas thermal energy utilization rate.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A waste gas heat energy recovery device includes a recovery box. The recovery box is equipped with an inlet pump, an outlet pump, an air inlet pipe, a heat exchange pipe, and an exhaust port. The inlet pump, outlet pump, and air inlet pipe are all fixedly connected to the outer side of the recovery box. The inlet pump and outlet pump pass through the outer side of the recovery box and are connected to the heat exchange pipe. The air inlet pipe is connected to the interior of the recovery box. There are several heat exchange pipes that are interconnected and are fixedly connected to the inner wall of the recovery box. There are several exhaust ports that are evenly distributed on the surface of the recovery box symmetrical to the air inlet pipe. Each exhaust port is equipped with two one-way exhaust plates stacked together. The upper and lower ends of each one-way exhaust plate are rotatably connected to the upper and lower end faces of the exhaust port, respectively.

[0006] In use, connect the inlet pipe to the inlet pump, the outlet pipe to the outlet pump, and the air inlet pipe to the exhaust pipe. The inlet pump draws cold water into the heat exchange pipe, and the exhaust gas, heated by the heat, is placed in the recovery box to heat the cold water. During this process, the exhaust port is blocked by a one-way exhaust plate to reduce exhaust emissions. Once the heat energy is almost consumed, the air inlet pipe continues to draw in air, and the excess exhaust gas is pushed outward by the one-way exhaust plate. This cycle repeats, and the heated water is drawn out by the outlet pump, while cold water is added again by the inlet pump. This process is repeated continuously, achieving the goal of improving the utilization rate of exhaust gas heat energy.

[0007] Preferably, the heat exchange tube is provided with connecting pipes on both its upper and lower ends. These connecting pipes are fixedly connected to and internally communicate with the upper and lower ends of the heat exchange tube, respectively. The outlet pump is connected to the interior of one of the connecting pipes, and the inlet pump is connected to the other connecting pipe. Two anti-boiling plates are provided inside the heat exchange tube and are fixedly connected to the inner walls of the upper and lower ends of the heat exchange tube, respectively. The connecting pipes facilitate connection to the heat exchange tube, and the anti-boiling plates reduce excessive steam and pressure caused by hot water boiling, which could damage the heat exchange tube.

[0008] Preferably, the intake pipe is equipped with a dust filter, the outer side of which engages with the inner wall of the intake pipe. The dust filter effectively reduces solid dust in the exhaust gas, thereby reducing dust in the recovery bin and maintaining hygiene within the bin.

[0009] Preferably, the inner wall of the air intake pipe is provided with a horizontal bar, which surrounds and is fixedly connected to the inner wall of the air intake pipe. A raised ring is provided on the outer surface of the dust filter, which surrounds and is fixedly connected to the outer surface of the dust filter. The raised ring is positioned outside the horizontal bar, and the dust filter is engaged with the inner wall of the air intake pipe through the cooperation of the raised ring and the horizontal bar. The horizontal bar and the raised ring can hold the dust filter in place during installation and also facilitate disassembly and cleaning, maintaining hygiene.

[0010] Preferably, grooves are provided on both the left and right side walls of the exhaust port, and the grooves communicate with the outer side of the recycling bin. One end of the one-way exhaust plate is placed in the groove and corresponds one-to-one with the groove. A rotating shaft is provided on the one-way exhaust plate, and the rotating shaft is fixedly connected to the one-way exhaust plate. The two ends of the rotating shaft are rotatably connected to the upper and lower end faces of the grooves, respectively. The grooves are placed on the outer side of the recycling bin to ensure that the one-way exhaust pipe can only rotate in one direction, preventing air backflow.

[0011] Preferably, there is a 1-3 cm gap between the two one-way exhaust plates inside the exhaust port. The gap between the two one-way exhaust plates can reduce the internal pressure of the recycling box during use and reduce the occurrence of accidents.

[0012] The beneficial effects of this utility model are: improving the utilization rate of waste gas heat energy; the connecting pipe facilitates connection to the heat exchange tube; the anti-boiling plate reduces excessive steam and pressure in the heat exchange tube caused by hot water boiling, which could damage the heat exchange tube; the dust filter reduces solid dust in the waste gas, thereby reducing dust in the recovery box and maintaining hygiene; the horizontal bar and convex ring can hold the dust filter in place during installation and are also easy to disassemble and clean, maintaining hygiene; the groove on the outer side of the recovery box ensures that the one-way exhaust pipe can only rotate in one direction, preventing air backflow; the gap between the two one-way exhaust plates reduces the internal pressure of the recovery box during use, reducing the occurrence of accidents. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the main view of this utility model;

[0015] Figure 3 yes Figure 2 A cross-sectional view of AA;

[0016] Figure 4 yes Figure 2 A cross-sectional view of BB;

[0017] Figure 5 yes Figure 2 A magnified view of detail C;

[0018] Figure 6 yes Figure 3 A magnified view of detail D;

[0019] Figure 7 yes Figure 4 A magnified view of detail E.

[0020] In the diagram: 1. Recycling bin, 2. Inlet pump, 3. Outlet pump, 4. Air inlet pipe, 5. Heat exchange pipe, 6. Exhaust port, 7. One-way exhaust plate, 8. Boiling stop plate, 9. Connecting pipe, 10. Dust filter, 11. Horizontal bar, 12. Protruding ring, 13. Groove, 14. Rotating shaft. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 In one embodiment, a waste gas heat energy recovery device includes a recovery box 1. The recovery box 1 is equipped with an inlet pump 2, an outlet pump 3, an air inlet pipe 4, a heat exchange pipe 5, and an exhaust port 6. The inlet pump 2, the outlet pump 3, and the air inlet pipe 4 are all fixedly connected to the outer side of the recovery box 1. The inlet pump 2 and the outlet pump 3 pass through the outer side of the recovery box 1 and are connected to the heat exchange pipe 5. The air inlet pipe 4 is connected to the interior of the recovery box 1. There are several heat exchange pipes 5, which are interconnected and fixedly connected to the inner wall of the recovery box 1. There are several exhaust ports 6, which are evenly distributed on the surface of the recovery box 1 symmetrical to the air inlet pipe 4. There are two one-way exhaust plates 7 inside the exhaust port 6. The two one-way exhaust plates 7 are stacked and distributed. The upper and lower ends of the one-way exhaust plates 7 are rotatably connected to the upper and lower end faces of the exhaust port 6, respectively.

[0023] like Figure 2, Figure 3 , Figure 4 and Figure 5 As shown, the heat exchange tube 5 is provided with connecting pipes 9 on both the upper and lower ends. The connecting pipes 9 are fixedly connected to the upper and lower ends of the heat exchange tube 5 and are internally connected. The water outlet pump 3 is internally connected to one of the connecting pipes 9, and the water inlet pump 2 is connected to the other connecting pipe 9. There are two anti-boiling plates 8 inside the heat exchange tube 5, which are fixedly connected to the inner walls of the upper and lower ends of the heat exchange tube 5 respectively.

[0024] like Figure 3 and Figure 6 As shown, a dust filter 10 is provided inside the air intake pipe 4, and the outer side of the dust filter 10 is engaged with the inner wall of the air intake pipe 4.

[0025] like Figure 3 and Figure 6 As shown, a horizontal bar 11 is provided on the inner wall of the air intake pipe 4. The horizontal bar 11 surrounds the inner wall of the air intake pipe 4 and is fixedly connected to the inner wall of the air intake pipe 4. A convex ring 12 is provided on the outer surface of the dust filter 10. The convex ring 12 surrounds the outer side of the dust filter 10 and is fixedly connected to the outer side of the dust filter 10. The convex ring 12 is placed outside the horizontal bar 11. The dust filter 10 is engaged with the inner wall of the air intake pipe 4 through the cooperation of the convex ring 12 and the horizontal bar 11.

[0026] like Figure 4 and Figure 7 As shown, grooves 13 are provided on both the left and right side walls of the exhaust port 6. The grooves 13 are connected to the outer side of the recycling box 1. One end of the one-way exhaust plate 7 is placed in the groove 13 and corresponds to the groove 13 one by one. A rotating shaft 14 is provided on the one-way exhaust plate 7. The rotating shaft 14 is fixedly connected to the one-way exhaust plate 7. The two ends of the rotating shaft 14 are rotatably connected to the upper end face and the lower end face of the groove 13, respectively.

[0027] like Figure 7 As shown, there is a gap of 1CM-3CM between the two one-way exhaust plates 7 inside the exhaust port 6.

[0028] In use, connect the inlet pipe to the inlet pump 2, the outlet pipe to the outlet pump 3, and the air inlet pipe 4 to the exhaust pipe. The inlet pump 2 draws cold water through the connecting pipe 9 into the heat exchange pipe 5. The exhaust gas containing heat is placed in the recovery box 1, and dust in the exhaust gas is blocked by the dust filter 10, reducing dust entering the recovery box 1. The cold water is then heated by the heat. During this process, the exhaust port 4 is blocked by the one-way exhaust plate 7 and the rotating shaft 14, causing the exhaust gas to be discharged quickly, reducing emissions. Once the heat energy is almost consumed, the air inlet pipe 4 continues to intake air. Excess exhaust gas is discharged by the one-way exhaust plate 7 being pushed outwards by pressure. This cycle repeats, and because of the groove 13, the one-way exhaust plate 7 does not rotate inwards. The external air will not dilute the heat energy of the waste gas in the recovery box. At the same time, to ensure safety, there is still a 1-3 cm space between the two one-way exhaust plates 7 in the exhaust port 6. This facilitates the rotation of the one-way exhaust plates 7 and reduces the safety hazards caused by the rapid increase of internal pressure. The anti-boiling plate 8 in the heat exchange tube 5 can also reduce the boiling of hot water and reduce the internal pressure in the heat exchange tube 5, making it safer. The heated hot water is extracted by the outlet pump 3 and cold water is added by the inlet pump 2. This process is repeated. If it is necessary to clean the dust on the dust filter 10, the dust filter 10 can be removed from the crossbar 11 of the air inlet pipe 4 for cleaning, and then the convex ring 12 of the dust filter 10 can be placed against the crossbar. This achieves the purpose of improving the utilization rate of waste gas heat energy.

Claims

1. A device for recovering heat energy from waste gas, characterized in that, The system includes a recycling bin (1), which is equipped with an inlet pump (2), an outlet pump (3), an air inlet pipe (4), a heat exchange pipe (5), and an exhaust port (6). The inlet pump (2), outlet pump (3), and air inlet pipe (4) are all fixedly connected to the outer side of the recycling bin (1). The inlet pump (2) and outlet pump (3) pass through the outer side of the recycling bin (1) and are connected to the heat exchange pipe (5). The air inlet pipe (4) is connected to the interior of the recycling bin (1). There are several heat exchange tubes (5) that are interconnected. The heat exchange tubes (5) are fixedly connected to the inner wall of the recovery box (1). There are several exhaust ports (6) that are evenly distributed on the body surface of the recovery box (1) symmetrical to the air inlet pipe (4). There are two one-way exhaust plates (7) inside the exhaust port (6). The two one-way exhaust plates (7) are stacked and distributed. The upper and lower ends of the one-way exhaust plates (7) are rotatably connected to the upper end face and the lower end face inside the exhaust port (6), respectively.

2. The waste gas heat energy recovery device according to claim 1, characterized in that, The heat exchange tube (5) is provided with connecting pipes (9) on both the upper and lower ends. The connecting pipes (9) are fixedly connected to the upper and lower ends of the heat exchange tube (5) and are internally connected. The water outlet pump (3) is internally connected to one of the connecting pipes (9). The water inlet pump (2) is connected to the other connecting pipe (9). The heat exchange tube (5) is provided with anti-boiling plates (8). There are two anti-boiling plates (8) and they are fixedly connected to the inner walls of the upper and lower ends of the heat exchange tube (5) respectively.

3. The waste gas heat energy recovery device according to claim 1, characterized in that, The air intake pipe (4) is provided with a dust filter (10), and the outer side of the dust filter (10) is engaged with the inner wall of the air intake pipe (4).

4. The waste gas heat energy recovery device according to claim 3, characterized in that, The inner wall of the air intake pipe (4) is provided with a horizontal bar (11), which surrounds the inner wall of the air intake pipe (4) and is fixedly connected to the inner wall of the air intake pipe (4). The outer surface of the dust filter (10) is provided with a convex ring (12), which surrounds the outer side of the dust filter (10) and is fixedly connected to the outer side of the dust filter (10). The convex ring (12) is placed outside the horizontal bar (11), and the dust filter (10) is engaged with the inner wall of the air intake pipe (4) through the cooperation of the convex ring (12) and the horizontal bar (11).

5. The waste gas heat energy recovery device according to claim 1, characterized in that, The left and right side walls of the exhaust port (6) are provided with grooves (13), the grooves (13) are connected to the outer side of the recycling box (1), one end of the one-way exhaust plate (7) is placed in the groove (13) and corresponds one-to-one with the groove (13), the one-way exhaust plate (7) is provided with a rotating shaft (14), the rotating shaft (14) is fixedly connected to the one-way exhaust plate (7), and the two ends of the rotating shaft (14) are rotatably connected to the upper end face and the lower end face of the groove (13) respectively.

6. The waste gas heat energy recovery device according to claim 5, characterized in that, There is a gap of 1CM-3CM between the two one-way exhaust plates (7) inside the exhaust port (6).

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