Exhaust gas waste heat utilization device

Abstract

The utility model relates to tail gas waste heat utilization technical field especially tail gas waste heat utilization device, including heat exchanger, the rear end of heat exchanger is provided with heat preservation box, the right side of heat exchanger is provided with filter bin, the inboard of filter bin is provided with partition, the front and back two sides of partition are provided with filter plate, the front and back two sides of filter bin are provided with sealing cover plate, the left end of filter bin inboard is provided with plugging plate no.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas waste heat utilization technology, and in particular to an exhaust gas waste heat utilization device. Background Technology

[0002] Industrial exhaust gases contain high levels of heat. To avoid resource waste, it is necessary to extract the heat from the exhaust gases for reuse, which involves the use of exhaust gas waste heat recovery devices.

[0003] For example, patent number CN220018288U discloses a waste heat recovery device for exhaust gas. The waste heat recovery device for exhaust gas includes a heat exchanger and a filter. The heat exchanger includes a first housing with a first air inlet and a first air outlet. A liquid channel is provided inside the first housing, and the exhaust gas entering the first housing through the first air inlet can exchange heat with the liquid in the liquid channel. The filter includes a second housing, a filter element, and a cleaning device. The second housing has a second air inlet and a second air outlet. The second air inlet is connected to the first air outlet. The filter element is disposed in the second housing and between the second air inlet and the second air outlet. The filter element is used to filter the exhaust gas entering the second housing. The cleaning device is constructed as a cleaning nozzle, which is used to spray cleaning liquid toward the filter element.

[0004] However, existing exhaust gas waste heat recovery devices require the entire device to be shut down when cleaning and maintaining the filter structure, which affects the waste heat recovery process. At the same time, the wastewater generated during cleaning can easily splash into the pipes, affecting the subsequent use of other structures. Utility Model Content

[0005] To overcome the problem that cleaning and maintaining the filter structure of the exhaust gas waste heat recovery device can affect the waste heat recovery process, and that the wastewater generated during cleaning can easily affect the subsequent use of other structures.

[0006] The technical solution of this utility model is as follows: a waste heat utilization device for exhaust gas, including a heat exchanger, an insulation box at the rear end of the heat exchanger, a filter chamber on the right side of the heat exchanger, a partition plate on the inner side of the filter chamber, filter plates on the front and rear sides of the partition plate, sealing covers on the front and rear sides of the filter chamber, a first sealing plate on the left end of the inner side of the filter chamber, a first lead screw on the right side of the first sealing plate, a second sealing plate on the right end of the inner side of the filter chamber, a second lead screw on the left side of the second sealing plate, a purifier connected to the right side of the inner side of the filter chamber, and an induced draft fan connected to the right side of the purifier.

[0007] Preferably, by setting a sealing cover, the filter plate can be easily disassembled and assembled. By setting a first sealing plate, a second sealing plate, a first screw, and a second screw, the flow of the filter chamber can be easily controlled, thereby realizing the reversal of airflow.

[0008] Preferably, the heat exchanger is equipped with a liquid inlet pipe connector at the front end and a liquid outlet pipe at the rear end, which is connected to the insulation box. An air inlet pipe connector is provided on the left side of the heat exchanger, and the right end of the heat exchanger is connected to the filter chamber through a pipe. A backwash nozzle is connected to the upper end of the filter chamber, and a drain valve is connected to the lower end of the filter chamber.

[0009] Preferably, the filter plates are arranged symmetrically front and back, and the two sides of the filter plates and the inner wall of the filter chamber are slidably connected by a sliding groove. One end of the filter plate is tightly fitted to the surface of the partition plate, and the other end of the filter plate extends to the outside of the filter chamber through a through groove and is fixedly connected to the sealing cover. The inner sides of the filter plates and the through grooves are adapted to each other, and the sealing cover is sealed to the front and back sides of the filter chamber. The side of the sealing cover and the surface of the filter chamber are detachably connected by bolts.

[0010] Preferably, there are two sealing plates and two lead screws arranged side by side. The left side of the sealing plate slides against the inner side of the filter chamber, and the right side of the sealing plate is fixedly installed with a drive block. The drive block and the lead screw are threadedly connected.

[0011] Preferably, the two lead screws are connected end to end by a connecting shaft and are rotatably connected to the partition plate. The ends of the two lead screws that are far apart from each other are rotatably connected to the inner side of the filter chamber by a rotating shaft. The end of the rotating shaft extends to the outer side of the filter chamber and is fixedly installed with a knob.

[0012] Preferably, there are two sealing plates and two lead screws arranged side by side, with the right side of the sealing plate slidingly attached to the inside of the filter chamber, and the left side of the sealing plate fixedly installed with a drive block, which is threadedly connected to the lead screw.

[0013] Preferably, the two lead screws are connected end to end by a connecting shaft and are rotatably connected to the partition plate. The ends of the two lead screws that are far apart from each other are rotatably connected to the inner side of the filter chamber by a rotating shaft. The end of the rotating shaft extends to the outer side of the filter chamber and is fixedly installed with a knob.

[0014] The beneficial effects of this utility model are:

[0015] 1. When the filter plate needs to be cleaned, the exhaust gas waste heat recovery device can control the sealing plate 1 and sealing plate 2 to block the filter chamber on one side of the partition plate by rotating the lead screw 1 and lead screw 2 on one side. At this time, the airflow passes through the filter chamber from the other side of the partition plate for filtration, and the filter plate on this side can be backwashed and cleaned without affecting the continuous operation of waste heat recovery and exhaust gas purification.

[0016] 2. When the filter plate needs to be disassembled and replaced in this exhaust gas waste heat recovery device, the replacement side is sealed in the same way. At this time, the bolts on the surface of the sealing cover are removed, and the sealing cover can be pulled to move the filter plate out of the filter chamber, which facilitates the replacement and does not affect the continuous operation of the device. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural representation of the exhaust gas waste heat utilization device of this utility model. Figure 1 ;

[0018] Figure 2 The diagram shown is a three-dimensional structural representation of the exhaust gas waste heat utilization device of this utility model. Figure 2 ;

[0019] Figure 3 The diagram shown is a three-dimensional structural schematic of the filter chamber of this utility model;

[0020] Figure 4 The diagram shown is a three-dimensional cross-sectional view of the filter chamber of this utility model. Figure 1 ;

[0021] Figure 5 The diagram shown is a three-dimensional cross-sectional view of the filter chamber of this utility model. Figure 2 .

[0022] Explanation of reference numerals in the attached drawings: 1. Heat exchanger; 2. Insulation box; 3. Filter chamber; 301. Backwash nozzle; 302. Drain valve; 4. Partition plate; 5. Filter plate; 6. Sealing cover plate; 7. Blocking plate one; 701. Drive block one; 8. Lead screw one; 801. Rotating shaft one; 802. Knob one; 9. Blocking plate two; 901. Drive block two; 10. Lead screw two; 1001. Rotating shaft two; 1002. Knob two; 11. Purifier; 12. Exhaust fan. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5This utility model provides an embodiment of a waste heat recovery device for exhaust gas, including a heat exchanger 1, an insulation box 2 at the rear end of the heat exchanger 1, a filter chamber 3 on the right side of the heat exchanger 1, a partition plate 4 inside the filter chamber 3, filter plates 5 on the front and rear sides of the partition plate 4, sealing covers 6 on the front and rear sides of the filter chamber 3, a first sealing plate 7 at the left end of the inner side of the filter chamber 3, a first screw 8 on the right side of the first sealing plate 7, a second sealing plate 9 at the right end of the inner side of the filter chamber 3, a second screw 10 on the left side of the second sealing plate 9, and a clean air supply connected to the right side of the inner side of the filter chamber 3. The purifier 11 is connected to an exhaust fan 12 on its right side. By rotating the lead screw 8 and lead screw 10 on one side, the sealing plate 7 and sealing plate 9 are controlled to seal the filter chamber 3 on one side of the partition plate 4. At this time, the airflow passes through the filter chamber 3 from the other side of the partition plate 4 for filtration, and the filter plate 5 on that side can be backwashed and cleaned without affecting the continuous operation of waste heat recovery and exhaust gas purification. When the filter plate 5 needs to be disassembled and replaced, the replacement side is sealed in the same way. At this time, the bolts on the surface of the sealing cover plate 6 are removed, and the sealing cover plate 6 can be pulled to move the filter plate 5 away from the filter chamber 3.

[0025] Please see Figures 1-4 In this embodiment, the heat exchanger 1 has an inlet pipe connector at its front end and an outlet pipe at its rear end, which is connected to the insulation box 2. An air inlet pipe connector is located on the left side of the heat exchanger 1. The right end of the heat exchanger 1 is connected to the filter chamber 3 via a pipe. A backwash nozzle 301 is connected to the upper end of the filter chamber 3, and a drain valve 302 is connected to the lower end of the filter chamber 3. Filter plates 5 are symmetrically arranged front and back. The two sides of the filter plates 5 and the inner wall of the filter chamber 3 are slidably connected via grooves. One end of the filter plate 5 is tightly fitted to the surface of the partition plate 4, and the other end of the filter plate 5 extends through a through groove to the outside of the filter chamber 3 and is fixedly connected to the sealing cover plate 6. The filter plates 5 and the inner sides of the through groove are mutually compatible. The sealing cover 6 and the filter chamber 3 are sealed together on both sides. The sides of the sealing cover 6 and the surface of the filter chamber 3 are detachably connected by bolts. The exhaust gas is introduced into the heat exchanger 1 through the inlet pipe joint, and the heat-absorbing medium is introduced into the heat exchanger 1 through the liquid inlet pipe. The medium absorbs the waste heat and is then stored in the insulation box 2. The cooled exhaust gas enters the filter chamber 3 and is filtered by the filter plate 5. The filtered exhaust gas enters the purifier 11 for purification. When the filter plate 5 needs to be disassembled and replaced, the bolts on the surface of the sealing cover 6 can be removed to pull the sealing cover 6 and move the filter plate 5 away from the filter chamber 3, which is convenient for replacement and does not affect the continuous operation of the device.

[0026] Please see Figures 2-5In this embodiment, two sealing plates 7 and two lead screws 8 are arranged side by side. The left side of the sealing plate 7 slides against the inner side of the filter chamber 3. A drive block 701 is fixedly installed on the right side of the sealing plate 7. The drive block 701 is threadedly connected to the lead screw 8. The two lead screws 8 are connected end to end by a connecting shaft and are rotatably connected to the partition plate 4. The ends of the two lead screws 8 that are far apart from each other are rotatably connected to the inner side of the filter chamber 3 by a rotating shaft 801. A knob 802 is fixedly installed at the end of the rotating shaft 801 extending to the outer side of the filter chamber 3. Two sealing plates 9 and two lead screws 10 are arranged side by side. The right side of the sealing plate 9 slides against the inner side of the filter chamber 3. A drive block 901 is fixedly installed on the left side of the sealing plate 9. The drive block 901 is threadedly connected to the lead screw 10. The two lead screws 10 are connected by a connecting shaft. The two screw rods 10 are connected end to end and rotatably connected to the partition plate 4. The ends of the two screw rods 10 are far apart from each other and are rotatably connected to the inner side of the filter chamber 3 via the rotating shaft 1001. The end of the rotating shaft 1001 extends to the outer side of the filter chamber 3 and is fixedly installed with the knob 1002. When the filter plate 5 needs to be cleaned, the screw rods 8 and 10 are rotated by rotating the knobs 802 and 1002 on one side. This causes the drive block 701 and drive block 901 to control the sealing plate 7 and sealing plate 9 to slide in the filter chamber 3 and block the filter chamber 3 on one side of the partition plate 4. At this time, the airflow passes through the filter chamber 3 from the other side of the partition plate 4 for filtration. By inputting high-pressure water into the backwash nozzle 301, the filter plate 5 on this side can be backwashed and cleaned. The sewage is discharged from the drain valve 302 on this side, without affecting the waste heat recovery and exhaust gas purification.

[0027] When cleaning the filter plate 5 during operation, the knobs 802 and 1002 on one side are turned to control the lead screws 8 and 10 to rotate. This causes the drive blocks 701 and 901 to control the sealing plates 7 and 9 to slide within the filter chamber 3, sealing one side of the filter chamber 3 of the partition plate 4. At this time, the airflow passes through the filter chamber 3 from the other side of the partition plate 4 for filtration, thus backwashing and cleaning the filter plate 5 on that side. When the filter plate 5 needs to be disassembled and replaced, the replacement side is sealed in the same way. Then, the bolts on the surface of the sealing cover 6 are removed, and the sealing cover 6 can be pulled to move the filter plate 5 away from the filter chamber 3 for easy replacement.

[0028] Through the above steps, by rotating the lead screw 8 and lead screw 10 on one side, the sealing plate 7 and sealing plate 9 are controlled to seal the filter chamber 3 on one side of the partition plate 4. At this time, the airflow passes through the filter chamber 3 from the other side of the partition plate 4 for filtration, and the filter plate 5 on this side can be backwashed and cleaned without affecting the continuous operation of waste heat recovery and exhaust gas purification. This solves the problem that when the exhaust gas waste heat utilization device cleans and maintains the filter structure, it will affect the waste heat recovery process, and the wastewater generated during cleaning will easily affect the subsequent use of other structures.

Claims

1. A waste heat recovery device for exhaust gas, comprising a heat exchanger (1), characterized in that: A heat exchanger (1) is provided with an insulation box (2) at the rear end, a filter chamber (3) is provided on the right side of the heat exchanger (1), a partition plate (4) is provided on the inner side of the filter chamber (3), filter plates (5) are provided on the front and rear sides of the partition plate (4), a sealing cover plate (6) is provided on the front and rear sides of the filter chamber (3), a sealing plate (7) is provided on the left side of the inner side of the filter chamber (3), a screw rod (8) is provided on the right side of the sealing plate (7), a sealing plate (9) is provided on the right side of the inner side of the filter chamber (3), a screw rod (10) is provided on the left side of the sealing plate (9), a purifier (11) is connected to the right side of the inner side of the filter chamber (3), and an induced draft fan (12) is connected to the right side of the purifier (11).

2. The exhaust gas waste heat utilization device according to claim 1, characterized in that: The heat exchanger (1) is provided with an inlet pipe connector at the front end and an outlet pipe at the rear end. The outlet pipe and the insulation box (2) are connected to each other. The heat exchanger (1) is provided with an air inlet pipe connector on the left side. The heat exchanger (1) is connected to the filter chamber (3) via a pipe on the right side. The filter chamber (3) is connected with a backwash nozzle (301) at the upper end and a drain valve (302) at the lower end.

3. The exhaust gas waste heat utilization device according to claim 1, characterized in that: The filter plate (5) is arranged symmetrically front and back. The two sides of the filter plate (5) and the inner wall of the filter chamber (3) are slidably connected by a sliding groove. One end of the filter plate (5) is tightly fitted to the surface of the partition plate (4). The other end of the filter plate (5) extends to the outside of the filter chamber (3) through a through groove and is fixedly connected to the sealing cover plate (6). The filter plate (5) and the inner side of the through groove are mutually adapted. The sealing cover plate (6) and the front and rear sides of the filter chamber (3) are sealed and connected. The side of the sealing cover plate (6) and the surface of the filter chamber (3) are detachably connected by bolts.

4. The exhaust gas waste heat recovery device according to claim 1, characterized in that: There are two sealing plates (7) and screw rods (8) arranged side by side. The left side of the sealing plate (7) and the inner side of the filter chamber (3) are slidably attached. The right side of the sealing plate (7) is fixedly installed with a drive block (701). The drive block (701) and the screw rod (8) are threadedly connected.

5. The exhaust gas waste heat utilization device according to claim 4, characterized in that: Two lead screws (8) are connected end to end by a connecting shaft and are rotatably connected to the partition plate (4). The ends of the two lead screws (8) that are far apart from each other are rotatably connected to the inner side of the filter chamber (3) by a rotating shaft (801). The end of the rotating shaft (801) extends to the outer side of the filter chamber (3) and a knob (802) is fixedly installed thereon.

6. The exhaust gas waste heat utilization device according to claim 1, characterized in that: There are two sealing plates (9) and two screw rods (10) arranged side by side. The right side of the sealing plate (9) and the inner side of the filter chamber (3) are slidably attached. The left side of the sealing plate (9) is fixedly installed with a drive block (901). The drive block (901) and the screw rod (10) are threadedly connected.

7. The exhaust gas waste heat recovery device according to claim 6, characterized in that: Two lead screws (10) are connected end to end by a connecting shaft and are rotatably connected to the partition plate (4). The ends of the two lead screws (10) that are far apart from each other are rotatably connected to the inner side of the filter chamber (3) by a rotating shaft (1001). The end of the rotating shaft (1001) extends to the outer side of the filter chamber (3) and is fixedly installed with a knob (1002).

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